Abrégé

Embodiments of the present disclosure relate to a method and system to generate a waveform in a communication network. The transmitter receives an input data and transmit a generated waveform to another communication system. The input data is spread with a spread code to generate a spread data and rotated using a constellation rotation operation to produce a rotated data. The rotated data is then precoded using precoding filter to produce a precoded data, and transformed into DFT output data using DFT operation. The DFT output data is then mapped with subcarriers to generate the sub-carrier mapped DFT data and modulated using Orthogonal Frequency Division Multiplexing (OFDM) modulation to generate the waveform with low PAPR.

Classes IPC  ?

• H04J 13/00 - Systèmes de multiplexage en code
• H04B 1/7103 - Aspects liés aux interférences les parasites étant des interférences d'accès multiple
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

The present disclosure discloses a method and a system for providing a code cover to Orthogonal Frequency Division Multiplexing (OFDM) symbols in a multiple user system. A data sequence is received from each of a plurality of users. Further, a reference sequence is generated for the data sequence of each of the plurality of users. Each of the reference sequence is multiplied with a code cover which are orthogonal to each other. Each of the reference sequence is time multiplexed with corresponding data sequence, to generate a corresponding multiplexed sequence. Further, a Discrete Fourier Transform (DFT) is performed on each of the multiplexed sequence to generate a corresponding DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol. Lastly, the corresponding DFT-s-OFDM symbol is processed for transmitting over corresponding one or more channels.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/20 - Circuits de modulationCircuits émetteurs

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively related to methods and systems methods for transmitting a waveform. The waveform is a pre-DFT RS and data multiplexed DFT-S-OFDM with excess bandwidth shaping and MIMO. Also, embodiments of the present disclosure relate to methods of detecting the received data. The method for transmitting a waveform, comprising generating, by one or more transmitters, at least one data sequence and at least one reference sequence (RS). Also, the method comprises time-multiplexing the at least one data sequence with the at least one RS, to generate a multiplexed sequence. Further, the method comprises generating a filtered-extended bandwidth DFT-s-OFDM symbol using the multiplexed sequence. The filtered-extended bandwidth DFT-s-OFDM symbol generated by the one or more transmitters is transmitted in an OFDM symbol.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/02 - Systèmes à bande de base Détails

Abrégé

Embodiments of the present disclosure provide a method of processing received signal using a massive MIMO base station (BS). The BS comprises a radio unit (RU), a distributed unit (DU) and an interface. The method comprises receiving a plurality of signals corresponding to the plurality of antennas, said signals comprises at least one of data signals, demodulation reference signals (DMRS) and sounding reference signals (SRS). The RU or DU performs a grouping operation on a subset of the plurality of signals corresponding to a subset of antennas to generate signal groups. The RU performs a first stage filtering on the signals associated with each group using group specific filters to obtain group specific filtered signals. The DU performs a second stage filtering on the group specific filtered signals to obtain second stage filtered signals.

Classes IPC  ?

• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission

Abrégé

Embodiments of the present disclosure relate to a base station and method for communication in a communication network. The method comprising signalling a DMRS-configuration or SRS-configuration to at least one UE. The DMRS-configuration comprises signalling at least one antenna port number from multiple antenna port numbers, each antenna port number indicates location of occupied subcarriers and null subcarriers associated with a DMRS transmission of the at least one UE. The SRS-configuration comprises signalling of parameters associated with a time, a frequency and a code. The method also comprises receiving a data and DMRS signals, or SRS signals corresponding to the at least one UE. Further, grouping a subset of the signals corresponding to a subset of antennas to generate a plurality of signal groups. Next, performing first stage filtering at RU followed by second stage filtering at DU of the signals associated with each signal groups to obtain filtered signals.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments of the present disclosure are related a method for wireless communication. The method comprises receiving by a base station (BS), signals from a plurality of user equipment's (UEs) and obtaining channel estimates associated with each UE using the received signals. Next, calculating a first metric for each UE, and each of the plurality of beams associated with the BS using the obtained channel estimates and determining one or more best beams from a plurality of beams associated with the BS, and a second metric for each UE using the first metric. Further, segregating the UEs into groups based on the determined one or more best beams and the second metric. Thereafter, performing beamforming on control channel based on the one or more best beams, and performing allocation of at least one of resources, modulation and coding scheme for a control channel based on the segregated groups.

Classes IPC  ?

• H04W 72/1273 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux de flux de données en liaison descendante
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04L 1/20 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue en utilisant un détecteur de la qualité du signal
• H04W 72/044 - Affectation de ressources sans fil sur la base du type de ressources affectées
• H04W 72/0446 - Ressources du domaine temporel, p. ex. créneaux ou trames
• H04W 72/0453 - Ressources du domaine fréquentiel, p. ex. porteuses dans des AMDF [FDMA]
• H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal

Abrégé

Embodiments of the present disclosure are related a method for wireless communication. The method comprises receiving by a base station (BS), signals from a plurality of user equipment's (UEs) and obtaining channel estimates associated with each UE using the received signals. Next, calculating a first metric for each UE, and each of the plurality of beams associated with the BS using the obtained channel estimates and determining one or more best beams from a plurality of beams associated with the BS, and a second metric for each UE using the first metric. Further, segregating the UEs into groups based on the determined one or more best beams and the second metric. Thereafter, performing beamforming on control channel based on the one or more best beams, and performing allocation of at least one of resources, modulation and coding scheme for a control channel based on the segregated groups.

Classes IPC  ?

• H04W 72/1273 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux de flux de données en liaison descendante
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04L 1/20 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue en utilisant un détecteur de la qualité du signal
• H04W 72/044 - Affectation de ressources sans fil sur la base du type de ressources affectées
• H04W 72/0446 - Ressources du domaine temporel, p. ex. créneaux ou trames
• H04W 72/0453 - Ressources du domaine fréquentiel, p. ex. porteuses dans des AMDF [FDMA]
• H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal

Abrégé

Embodiments of the present disclosure provide a method of communication in a base station (BS). The BS comprising a distributed unit (DU) and at least one radio unit (RU), said DU performs High-PHY processing and said RU performs low-PHY processing. The method comprises transmitting, by the DU, a control information to the at least one RU using at least one of a c-plane message and a m-plane message, and data using au-plane message. The u-plane message is transmitted in one of a semi persistent and periodic technique. The transmitting of the at least one of a c-plane message and am-plane message indicates the u-plane data as one of a semi persistent and a periodic, said transmitting is valid for the u-plane messages carrying the u-plane data for a predetermined time period.

Classes IPC  ?

• H04W 72/20 - Canaux de commande ou signalisation pour la gestion des ressources
• H04W 92/12 - Interfaces entre des dispositifs formant réseau hiérarchiquement différents entre des points d'accès et des contrôleurs de points d'accès

Abrégé

Embodiments of the present disclosure provide a method of communication in a base station (BS). The BS comprising a distributed unit (DU) and at least one radio unit (RU), said DU performs High-PHY processing and said RU performs low-PHY processing. The method comprises transmitting, by the DU, a control information to the at least one RU using at least one of a c-plane message and a m-plane message, and data using au-plane message. The u-plane message is transmitted in one of a semi persistent and periodic technique. The transmitting of the at least one of a c-plane message and am-plane message indicates the u-plane data as one of a semi persistent and a periodic, said transmitting is valid for the u-plane messages carrying the u-plane data for a predetermined time period.

Classes IPC  ?

• H04W 72/20 - Canaux de commande ou signalisation pour la gestion des ressources
• H04W 92/12 - Interfaces entre des dispositifs formant réseau hiérarchiquement différents entre des points d'accès et des contrôleurs de points d'accès

Abrégé

Embodiments of the present disclosure are related. in general to communication, but exclusively related to methods and systems for improving coverage of a cellular network. The method comprising obtaining a transmission power capability of a user equipment (UE), and determining a time-frequency opportunities allocated to the UE and a modulation and coding scheme (MCS) associated with the UE. Thereafter, indicating an increase in the instantaneous transmit power level to the UE based on the transmission power capability of the UE. the time-frequency opportunities and the associated MCS. The method also comprises obtaining the number of Resource Elements (REs) available for PUSCH transmission. A Transport Block Size is obtained for the REs obtained and is transmitted by adding Cyclic Redundancy Check. The procedure also includes the usage of uplink symbols in special slots. The method also comprising the usage of Reference Symbols across the transmission opportunities based on the UE capability.

Classes IPC  ?

• H04W 52/26 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le débit de transmission ou la qualité de service [QoS Quality of Service]
• H04W 72/1263 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux

Abrégé

Embodiments of the present disclosure relate to a method and system to selecting a waveform in a communication network. The method comprises selecting at least one sequence from a plurality of sequences for transmitting, said plurality of sequences comprises a plurality of sub-set of sequences such that a sequence in a sub-set of sequences is a cyclic shifted version another sequence in said sub-set of sequences. Also, the method comprises rotating at least one sequence from a plurality of sequences by 90 degrees to produce at least one rotated sequence. Further, the method comprises transforming the at least one rotated sequence into frequency domain using a Discrete Fourier Transform (DFT) to generate a transformed sequence and mapping the transformed sequence using a plurality of subcarriers to generate a mapped sequence. Thereafter, the method comprises processing the mapped sequence to generate a waveform having an optimized PAPR, optimized auto and cross-correlation.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 13/00 - Systèmes de multiplexage en code
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments herein provide method of determining modulation and coding scheme (MCS) at a base station (BS). The method comprises obtaining, by the BS, downlink channel state information (DL-CSI) corresponding to a plurality of UEs. Also, the method comprises receiving feedback from the plurality of UEs, said feedback is at least one of explicit interference power and noise power feedback, post processing signal power-to-interference power plus noise power-based and determining MCS associated with a subset of UEs from the plurality of UEs using a predefined mapping between the MCS and a combination of DL-CSI and the feedback from the plurality of UEs. Further, the method comprises indicating the determined MCS to the subset of UEs from the plurality of UEs.

Classes IPC  ?

• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04B 7/0417 - Systèmes de rétroaction
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence

Abrégé

Embodiments of the present disclosure relate to system and method for generating a waveform in a communication network is disclosed. The method comprises determining precoder information using one of an indication from a base station and predetermined parameters corresponding to precoding. The predetermined parameters are one of coefficients of the precoding filter, and flatness requirement of the precoding filter. Also, the method comprises generating a sequence of output modulation symbols, wherein each output modulation symbol is obtained using a block of input data symbols and a lookup table. The lookup table is a function of the precoder information and pre-determined modulation information. Next, the sequence of output modulation symbols is transformed using Discrete Fourier Transform to generate transformed output modulation symbols. Thereafter, mapping the transformed output modulation symbols using a plurality of subcarriers to generate a sub-carrier mapped symbols and processing the sub-carrier mapped symbols to generate a waveform.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure relate to a method and system to selecting a waveform in a communication network. The method comprises selecting at least one sequence from a plurality of sequences for transmitting, said plurality of sequences comprises a plurality of sub-set of sequences such that a sequence in a sub-set of sequences is a cyclic shifted version another sequence in said sub-set of sequences. Also, the method comprises rotating at least one sequence from a plurality of sequences by 90 degrees to produce at least one rotated sequence. Further, the method comprises transforming the at least one rotated sequence into frequency domain using a Discrete Fourier Transform (DFT) to generate a transformed sequence and mapping the transformed sequence using a plurality of subcarriers to generate a mapped sequence. Thereafter, the method comprises processing the mapped sequence to generate a waveform having an optimized PAPR, optimized auto and cross-correlation.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 13/00 - Systèmes de multiplexage en code
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments herein provide method of determining modulation and coding scheme (MCS) at a base station (BS). The method comprises obtaining, by the BS, downlink channel state information (DL-CSI) corresponding to a plurality of UEs. Also, the method comprises receiving feedback from the plurality of UEs, said feedback is at least one of explicit interference power and noise power feedback, post processing signal power-to-interference power plus noise power-based and determining MCS associated with a subset of UEs from the plurality of UEs using a predefined mapping between the MCS and a combination of DL-CSI and the feedback from the plurality of UEs. Further, the method comprises indicating the determined MCS to the subset of UEs from the plurality of UEs.

Classes IPC  ?

• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04B 7/0417 - Systèmes de rétroaction
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence

Abrégé

Embodiments of the present disclosure relate to system and method for generating a waveform in a communication network is disclosed. The method comprises determining precoder information using one of an indication from a base station and predetermined parameters corresponding to precoding. The predetermined parameters are one of coefficients of the precoding filter, and flatness requirement of the precoding filter. Also, the method comprises generating a sequence of output modulation symbols, wherein each output modulation symbol is obtained using a block of input data symbols and a lookup table. The lookup table is a function of the precoder information and predetermined modulation information. Next, the sequence of output modulation symbols is transformed using Discrete Fourier Transform to generate transformed output modulation symbols. Thereafter, mapping the transformed output modulation symbols using a plurality of subcarriers to generate a sub-carrier mapped symbols and processing the sub-carrier mapped symbols to generate a waveform.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively related to methods and systems for improving coverage of a cellular network. The method comprising obtaining a transmission power capability of a user equipment (UE), and determining a time-frequency opportunities allocated to the UE and a modulation and coding scheme (MCS) associated with the UE. Thereafter, indicating an increase in the instantaneous transmit power level to the UE based on the transmission power capability of the UE, the time-frequency opportunities and the associated MCS. The method also comprises obtaining the number of Resource Elements (REs) available for PUSCH transmission. A Transport Block Size is obtained for the REs obtained and is transmitted by adding Cyclic Redundancy Check. The procedure also includes the usage of uplink symbols in special slots. The method also comprising the usage of Reference Symbols across the transmission opportunities based on the UE capability.

Classes IPC  ?

• H04W 52/26 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le débit de transmission ou la qualité de service [QoS Quality of Service]
• H04W 72/1263 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively relate to methods and systems for generating orthogonal time frequency division multiplexing (OTFDM) waveform with circular transmit diversity in time domain. The method comprises time-multiplexing at least one data sequence with at least one RS, to generate a multiplexed sequence. Also, the method comprising obtaining a plurality of circularly shifted sequences using the multiplexed sequence. Each of the plurality of circularly shifted sequences is obtained by circularly shifting the multiplexed sequence by a predefined number of samples or multiples of predefined number of samples. Further, the method comprises generating an OTFDM symbol corresponding to each of the plurality of circularly shifted sequences. Thereafter, transmitting an OTFDM waveform, by mapping the generated OTFDM symbols to the corresponding antenna ports of the communication system.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04J 11/00 - Systèmes multiplex orthogonaux

Abrégé

Embodiments of the present disclosure are related to method of generating orthogonal time frequency division multiplexing (OTFDM) waveforms. The method comprising generating, by a communication system, at least one data sequence and at least one reference sequence (RS). Also, the method comprising time-multiplexing the at least one data sequence with the at least one RS, to generate a multiplexed sequence, and transforming the multiplexed sequence using a DFT to generate a transformed sequence. Further, the method comprising obtaining precoded sequences from the transformed sequence, by applying a distinct frequency domain phase rotation vector on the transformed sequence. Furthermore, mapping each precoded sequence to a corresponding antenna port of the communication system to obtain a plurality of mapped sequences. Thereafter, generating OTFDM waveform corresponding to each antenna port using the associated mapped sequence.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04J 11/00 - Systèmes multiplex orthogonaux

Abrégé

Embodiments of the present disclosure relate to a structural massive multiple input multiple output (SM-MIMO) communication system. The system comprises a plurality of antenna panels configured both horizontally and vertically. Each panel comprises a plurality of antenna elements to generate a series of narrow directional beams in distinct spatial directions. These beams are grouped into multiple groups, each containing a predefined number of beams with associated IDs. Each group covers a predetermined limited geographical area, collectively covering the entire geographical coverage area of the communication system. The beam IDs associated with the narrow directional beams are reused to indicate the narrow directional beams in each of the plurality of groups. A processing unit connected to the plurality of antenna panels, to perform at least one of generating and controlling the plurality of narrow directional beams.

Classes IPC  ?

• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 7/0452 - Systèmes MIMO à plusieurs utilisateurs
• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/02 - Systèmes à bande de base Détails

Abrégé

Embodiments of the present disclosure relate to systems and methods to generate a signal in a communication network. The method comprises fdtering a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) data signal, and one of a DFT-S-OFDM and orthogonal frequency division multiplexing (OFDM) reference signal (RS) using a data filter and a RS filter respectively, to produce filtered data signal and filtered RS. The RS filter has one to one relationship with the data filter. Thereafter, port mapping the filtered RS to a corresponding port assigned to the transmitter to obtain port mapped filtered RS, wherein the port mapped filtered RS comprises a first subset of non-zero locations comprising of the filtered RS values and a second subset of zero locations comprising of zero values.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure relate to a base station (BS) and method for communication in a communication network. The method comprising signaling at least one antenna port number from multiple antenna port numbers to a UE. Also, the method comprises receiving a data and a reference signal (RS) corresponding to the UE. The data and the RS are received on one or more receive antennas of the BS, wherein the RS comprises occupied RS subcarriers and null subcarriers. A location of occupied RS subcarriers and null subcarrier positions are selected according to signaled antenna port. Next, channel parameters are estimated using the occupied subcarriers associated with the received RS, and interference plus noise parameters using the null subcarriers. Thereafter, equalizing the received data on the receive antennas using the measured channel parameters and the interference plus noise parameters for interference rejection and data detection.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/01 - Égaliseurs

Abrégé

Embodiments of the present disclosure relate to a transmission method performed by a communication system or a transmitter. The method comprising initiating at least one of a synchronous signal (SS) burst carrying at least one of a PSS sequence, a SSS sequence, a PBCH sequence, a PDCCH with control information, a PDSCH with traffic data, a physical downlink CSI-RS. The at least one of the SS Burst, the PDCCH, the PDSCH, the CSI-RS are transmitted using OTFDM symbols in a half frame or a full frame. Also, the method comprises a PRACH transmitted traffic data of in uplink; a PUCCH transmission carrying control data of users in uplink; a PUSCH transmission carrying traffic data of users in uplink; and an SRS transmission. The at least one of the PRACH, the PUCCH, the PUSCH and the SRS are transmitted using OTFDM symbols in a half frame or a full frame.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04J 11/00 - Systèmes multiplex orthogonaux

Abrégé

Embodiments of the present disclosure relate methods and systems for transmitting downlink Orthogonal time frequency-division multiplexing (OTFDM) symbol. The method comprising time-multiplexing, by the transmitter, at least one of a primary synchronization signal (PSS) sequence, a secondary synchronization signal (SSS) sequence and a physical broadcast channel (PBCH) sequence and a portion of the at least one of PSS sequence, SSS sequence and PBCH sequence to generate a multiplexed sequence. Also, the method comprises filtering the multiplexed sequence to generate a synchronized signal (SS) Block OTFDM symbol. Also, a method for transmitting OTFDM SS burst comprising time-multiplexing a plurality of OTFDM SS Blocks to generate multiplexed OTFDM SS blocks is provided. Each of the plurality of OTFDM SS Blocks is associated with a different beam. Further, methods disclosed relate to generation and transmission of one of PDCCH OTFDM symbol, PDSCH OTFDM symbol, PDCCH-PDSCH OTFDM symbol, PDCCH-PDSCH OTFDM slot and downlink frame.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue

Abrégé

The present disclosure discloses a method and a system for providing a code cover to Orthogonal Frequency Division Multiplexing (OFDM) symbols in a multiple user system. A data sequence is received from each of a plurality of users. Further, a reference sequence is generated for the data sequence of each of the plurality of users. Each of the reference sequence is multiplied with a code cover which are orthogonal to each other. Each of the reference sequence is time-multiplexed with corresponding data sequence, to generate a corresponding multiplexed sequence. Further, a Discrete Fourier Transform (DFT) is performed on each of the multiplexed sequence to generate a corresponding DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol. Lastly, the corresponding DFT-s-OFDM symbol is processed for transmitting over corresponding one or more channels.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/20 - Circuits de modulationCircuits émetteurs

Abrégé

Embodiments of the present disclosure relate to generating a waveform without a cyclic prefix. The method comprising generating, by a transmitter, at least one data sequence, at least one reference sequence (RS) and a portion of at least one RS. The at least one RS comprises at least one of a RS block, a RS cyclic prefix (CP) and a RS cyclic suffix (CS). Also, the method comprises time multiplexing the at least one data sequence with the at least one RS to generate at least one multiplexed sequence and filtering the at least one multiplexed sequence to obtain at least one filtered symbol. Further, the method comprises generating a waveform using the at least one filtered symbol. The portion of the at least one RS is repeated within the symbol.

Classes IPC  ?

• H04L 27/06 - Circuits de démodulationCircuits récepteurs
• H04L 7/04 - Commande de vitesse ou de phase au moyen de signaux de synchronisation
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs

Abrégé

Embodiments of the present disclosure relate to a method and system for transmitting a sequence with low peak-to-average-power-ratio (PAPR). A communication system receives control data. A transmitter of the communication system comprises a plurality of sequences which are associated with the control data in the transmitter. The transmitter selects a sequence from the plurality of sequence. The selected sequence is rotated, pre-coded for generating pre-coded sequence. DFT is applied on the pre-coded sequence for generating frequency domain signals. The frequency domain signals are processed and corresponding waveform is transmitted to a receiver of the communication system. The receiver receives the waveform and is processed to extract the sequence from the waveform. The receiver correlates the extracted sequence with plurality of sequences stored in receiver memory to detect the control data. The generated waveform has low PAPR.

Classes IPC  ?

• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude

Abrégé

Embodiments of the present disclosure are related a method for wireless communication. The method comprises receiving by a base station (BS), signals from a plurality of user equipment's (UEs) and obtaining channel estimates associated with each UE using the received signals. Next. calculating a first metric for each UE, and each of the plurality of beams associated with the BS using the obtained channel estimates and determining one or more best beams from a plurality of beams associated with the BS. and a second metric for each UE using the first metric. Further, segregating the UEs into groups based on the determined one or more best beams and the second metric. Thereafter. performing beamforming on control channel based on the one or more best beams, and performing allocation of at least one of resources, modulation and coding scheme for a control channel based on the segregated groups.

Classes IPC  ?

• H04W 72/1273 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux de flux de données en liaison descendante
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04L 1/20 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue en utilisant un détecteur de la qualité du signal
• H04W 72/044 - Affectation de ressources sans fil sur la base du type de ressources affectées
• H04W 72/0446 - Ressources du domaine temporel, p. ex. créneaux ou trames
• H04W 72/0453 - Ressources du domaine fréquentiel, p. ex. porteuses dans des AMDF [FDMA]
• H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal

Abrégé

Embodiments of the present disclosure relate to a method and system to selecting a waveform in a communication network. The method comprises selecting at least one sequence from a plurality of sequences for transmitting, said plurality of sequences comprises a plurality of sub-set of sequences such that a sequence in a sub-set of sequences is a cyclic shifted version another sequence in said sub-set of sequences. Also, the method comprises rotating at least one sequence from a plurality of sequences by 90 degrees to produce at least one rotated sequence. Further, the method comprises transforming the at least one rotated sequence into frequency domain using a Discrete Fourier Transform (DFT) to generate a transformed sequence and mapping the transformed sequence using a plurality of subcarriers to generate a mapped sequence. Thereafter, the method comprises processing the mapped sequence to generate a waveform having an optimized PAPR, optimized auto and cross-correlation.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 13/00 - Systèmes de multiplexage en code
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.

Classes IPC  ?

• H04J 13/00 - Systèmes de multiplexage en code
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/541 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de qualité en utilisant le niveau d’interférence

Abrégé

Embodiments herein provide method of determining modulation and coding scheme (MCS) at a base station (BS). The method comprises obtaining, by the BS, downlink channel state information (DL-CSI) corresponding to a plurality of UEs. Also, the method comprises receiving feedback from the plurality of UEs, said feedback is at least one of explicit interference power and noise power feedback, post processing signal power-to-interference power plus noise power-based and determining MCS associated with a subset of UEs from the plurality of UEs using a predefined mapping between the MCS and a combination of DL-CSI and the feedback from the plurality of UEs. Further, the method comprises indicating the determined MCS to the subset of UEs from the plurality of UEs.

Classes IPC  ?

• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04B 7/0417 - Systèmes de rétroaction
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence

Abrégé

Embodiments of the present disclosure relate to a method for communication by a base station (BS) with at least one of one or more user equipment's (UEs) and one or more relay nodes. The method comprising transmitting one or more downlink (DL) channel state information reference signals (CSI-RS) by the BS to the UEs and/or relay nodes. Thereafter, receiving by the BS at least one of a DL CSI and one or more SRS from the at least one the UEs and the relay nodes. Further, the method comprises performing at least one of a SU- MIMO, multi-user MIMO, TDD, FDD, and code domain multiplexing of the UEs or relay nodes using the received at least one of a DL CSI and one or more SRS. The BS is configured in one of a cylindrical antenna structure and a structural MIMO antenna structure.

Classes IPC  ?

• H04B 7/0413 - Systèmes MIMO
• H04B 7/0452 - Systèmes MIMO à plusieurs utilisateurs
• H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal

Abrégé

Embodiments of the present disclosure relate to system and method for generating a waveform in a communication network is disclosed. The method comprises determining precoder information using one of an indication from a base station and predetermined parameters corresponding to precoding. The predetermined parameters are one of coefficients of the precoding filter, and flatness requirement of the precoding filter. Also, the method comprises generating a sequence of output modulation symbols, wherein each output modulation symbol is obtained using a block of input data symbols and a lookup table. The lookup table is a function of the precoder information and pre-.determined modulation information. Next, the sequence of output modulation symbols is transformed using Discrete Fourier Transform to generate transformed output modulation symbols. Thereafter, mapping the transformed output modulation symbols using a plurality of subcarriers to generate a sub-carrier mapped symbols and processing the sub-carrier mapped symbols to generate a waveform.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure relate to a method for transmitting a waveform. The method comprising generating, by a transmitter, an orthogonal time frequency division multiplexing (OTFDM) waveform corresponding to an input bit sequence, wherein said input bit sequence is uniquely mapped to one of the plurality of OTFDM waveforms. Also, the method comprises transmitting the OTFDM waveform corresponding to the input bit sequence. Embodiments of the present disclosure also relates to method of receiving OTFDM waveforms.

Classes IPC  ?

• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04J 11/00 - Systèmes multiplex orthogonaux
• H03M 13/11 - Détection d'erreurs ou correction d'erreurs transmises par redondance dans la représentation des données, c.-à-d. mots de code contenant plus de chiffres que les mots source utilisant un codage par blocs, c.-à-d. un nombre prédéterminé de bits de contrôle ajouté à un nombre prédéterminé de bits d'information utilisant plusieurs bits de parité

Abrégé

Embodiments of the present disclosure relate to a method for transmitting a waveform. The method comprising generating. The method comprising generating, by a transmitter, at least one of: at least one input data or control and at least one reference sequence (RS). Also, the method comprises performing spreading operation on the at least one input data or control with a spread sequence to generate at least one spread data or control sequence and time- multiplexing the at least one spread data or control sequence with the at least one RS, to generate a multiplexed sequence. Further, the method comprises generating an OTFDM symbol using the multiplexed sequence. Also, the method transmits the RS and the data or control in one OTFDM symbol, which eventually offers low PAPR, spreading gain and low latency.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal

Abrégé

Embodiments of the present disclosure relate methods for generating and transmitting uplink Orthogonal time frequency-division multiplexing (OTFDM) symbols and the transmitters thereof. The method comprising time-multiplexing by one or more transmitters, at least one of a physical uplink control channel (PUCCH) sequence, a Physical Uplink Shared Channel (PUSCH) sequence and a reference sequence (RS) to generate a multiplexed sequence. The multiplexed sequence is processed to generate one or more PUCCH-PUSCH OTFDM symbols. Also, a method of generating and transmitting one or more PUCCH-PUSCH OTFDM slots, one or more PRACH OTFDM symbols and an uplink frame id provided.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure relate methods and systems for transmitting downlink Orthogonal time frequency-division multiplexing (OTFDM) symbol. The method comprising time-multiplexing, by the transmitter, at least one of a primary synchronization signal (PSS) sequence, a secondary synchronization signal (SSS) sequence and a physical broadcast channel (PBCH) sequence to generate a multiplexed sequence. Also the method comprises processing, by the transmitter, the multiplexed sequence to generate a SS Block OTFDM symbol.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure provide a method of processing received signal using a massive MIMO base station (BS). The BS includes at least a radio unit (RU), a distributed unit (DU) and an interface. The method includes at least receiving a plurality of signals corresponding to the plurality of antennas, said signals include at least one of data signals, demodulation reference signals (DMRS) and sounding reference signals (SRS). The RU or DU performs a grouping operation on a subset of the plurality of signals corresponding to a subset of antennas to generate signal groups. The RU performs a first stage filtering on the signals associated with each group using group specific filters to obtain group specific filtered signals. The DU performs a second stage filtering on the group specific filtered signals to obtain second stage filtered signals.

Classes IPC  ?

• H04L 5/12 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes modulations de phase d'une seule porteuse
• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission

Abrégé

Embodiments of the present disclosure relate to generating pre DFT RS and data multiplexed DFT-S-OFDM with excess bandwidth shaping. The RS and user data are transmitted in different OFDM symbols, such that channel estimation to equalize the data can be estimated clearly at the receiver. The present disclosure a method for transmitting a waveform is disclosed. The method comprising generating, by a transmitter, at least one of: at least one data sequence and at least one reference sequence (RS). Also the method comprises time-multiplexing the at least one data sequence with the at least one RS, to generate a multiplexed sequence, and generating a filtered- extended bandwidth DFT-s-OFDM symbol using the multiplexed sequence. Also, the method transmits RS and user data in one OFDM symbol with DFT-s-OFDM, which eventually offers low PAPR. Further, the method transmits only RS so that low PAPR is achieved.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/50 - Critères d’affectation ou de planification des ressources sans fil
• H04J 11/00 - Systèmes multiplex orthogonaux

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively related to methods and systems methods for transmitting a waveform. The waveform is a pre-DFT RS and data multiplexed DFT-S-OFDM with excess bandwidth shaping and MIMO. Also, embodiments of the present disclosure relate to methods of detecting the received data. The method for transmitting a waveform, comprising generating, by one or more transmitters, at least one data sequence and at least one reference sequence (RS). Also, the method comprises time- multiplexing the at least one data sequence with the at least one RS, to generate a multiplexed sequence. Further, the method comprises generating a filtered-extended bandwidth DFT-s-OFDM symbol using the multiplexed sequence. The filtered-extended bandwidth DFT-s-OFDM symbol generated by the one or more transmitters is transmitted in an OFDM symbol.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/54 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de qualité

Abrégé

Embodiments of the present disclosure relate to generating pre DFT RS and data multiplexed DFT-S-OFDM with excess bandwidth shaping. The RS and user data are transmitted in different OFDM symbols, such that channel estimation to equalize the data can be estimated clearly at the receiver. The present disclosure a method for transmitting a waveform is disclosed. The method comprising generating, by a transmitter, at least one of: at least one data sequence and at least one reference sequence (RS). Also the method comprises time-multiplexing the at least one data sequence with the at least one RS, to generate a multiplexed sequence, and generating a filtered-extended bandwidth DFT-s-OFDM symbol using the multiplexed sequence. Also, the method transmits RS and user data in one OFDM symbol with DFT-s-OFDM, which eventually offers low PAPR. Further, the method transmits only RS so that low PAPR is achieved.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively related to methods and systems for improving coverage of a cellular network. The method comprising obtaining a transmission power capability of a user equipment (UE), and determining a time-frequency opportunities allocated to the UE and a modulation and coding scheme (MCS) associated with the UE. Thereafter, indicating an increase in the instantaneous transmit power level to the UE based on the transmission power capability of the UE, the time-frequency opportunities and the associated MCS. The method also comprises obtaining the number of Resource Elements (REs) available for PUSCH transmission. A Transport Block Size is obtained for the REs obtained and is transmitted by adding Cyclic Redundancy Check. The procedure also includes the usage of uplink symbols in special slots. The method also comprising the usage of Reference Symbols across the transmission opportunities based on the UE capability.

Classes IPC  ?

• H04W 52/26 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le débit de transmission ou la qualité de service [QoS Quality of Service]
• H04W 72/1263 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux

Abrégé

Embodiments of the present disclosure relate to systems and methods to generate a signal in a communication network. The method comprises filtering a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) data signal, and one of a DFT-S-OFDM and orthogonal frequency division multiplexing (OFDM) reference signal (RS) using a data filter and a RS filter respectively, to produce filtered data signal and filtered RS. The RS filter has one to one relationship with the data filter. Thereafter, port mapping the filtered RS to a corresponding port assigned to the transmitter to obtain port mapped filtered RS, wherein the port mapped filtered RS comprises a first subset of non-zero locations comprising of the filtered RS values and a second subset of zero locations comprising of zero values.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

A base station (BS) and a method of operating the BS. The BS comprises a distributed unit (DU) and a radio unit (RU). The DU is configured to transmit control information to the RU using a control message. The DU is configured to transmit u-plane data to the RU using a u-plane message. The RU is configured to receive the u-plane message according to a semi persistent technique or a periodic technique. The control message comprises a c-plane message or an m-plane message. The control message comprises an indication to use the semi persistent technique or the periodic technique to receive the u-plane message. The indication is valid to be used by the RU to receive the u-plane message carrying the u-plane data and at least one u-plane message subsequently received by the RU, for a predetermined time period as indicated by the control message.

Classes IPC  ?

• H04W 72/20 - Canaux de commande ou signalisation pour la gestion des ressources
• H04W 92/12 - Interfaces entre des dispositifs formant réseau hiérarchiquement différents entre des points d'accès et des contrôleurs de points d'accès

Abrégé

Embodiments of the present disclosure relate to a method and system to generate a waveform in a communication network. The transmitter receives an input data and transmit a generated waveform to another communication system. The input data is spread with a spread code to generate a spread data and rotated using a constellation rotation operation to produce a rotated data. The rotated data is then precoded using precoding filter to produce a precoded data, and transformed into DFT output data using DFT operation. The DFT output data is then mapped with subcarriers to generate the sub-carrier mapped DFT data and modulated using Orthogonal Frequency Division Multiplexing (OFDM) modulation to generate the waveform with low PAPR.

Classes IPC  ?

• H04J 13/00 - Systèmes de multiplexage en code
• H04B 1/7103 - Aspects liés aux interférences les parasites étant des interférences d'accès multiple
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure provide a method of processing received signal using a massive MIMO base station (BS). The BS comprises a radio unit (RU), a distributed unit (DU) and an interface. The method comprises receiving a plurality of signals corresponding to the plurality of antennas, said signals comprises at least one of data signals, demodulation reference signals (DMRS) and sounding reference signals (SRS). The RU or DU performs a grouping operation on a subset of the plurality of signals corresponding to a subset of antennas to generate signal groups. The RU performs a first stage filtering on the signals associated with each group using group specific filters to obtain group specific filtered signals. The DU performs a second stage filtering on the group specific filtered signals to obtain second stage filtered signals.

Classes IPC  ?

• H04L 5/12 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes modulations de phase d'une seule porteuse
• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission

Abrégé

Embodiments of the present disclosure relate to a base station and method for communication in a communication network. The method comprising signaling a DMRS-configuration or SRS-configuration to at least one UE. The DMRS-configuration comprises signaling at least one antenna port number from multiple antenna port numbers, each antenna port number indicates location of occupied subcarriers and null subcarriers associated with a DMRS transmission of the at least one UE. The SRS-configuration comprises signaling of parameters associated with a time, a frequency and a code. The method also comprises receiving a data and DMRS signals, or SRS signals corresponding to the at least one UE. Further, grouping a subset of the signals corresponding to a subset of antennas to generate a plurality of signal groups. Next, performing first stage filtering at RU followed by second stage filtering at DU of the signals associated with each signal groups to obtain filtered signals.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

The present disclosure discloses a method and a system for providing a code cover to Orthogonal Frequency Division Multiplexing (OFDM) symbols in a multiple user system. A data sequence is received from each of a plurality of users. Further, a reference sequence is generated for the data sequence of each of the plurality of users. Each of the reference sequence is multiplied with a code cover which are orthogonal to each other. Each of the reference sequence is time-multiplexed with corresponding data sequence, to generate a corresponding multiplexed sequence. Further, a Discrete Fourier Transform (DFT) is performed on each of the multiplexed sequence to generate a corresponding DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol. Lastly, the corresponding DFT-s-OFDM symbol is processed for transmitting over corresponding one or more channels.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/20 - Circuits de modulationCircuits émetteurs

Abrégé

The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.

Classes IPC  ?

• H04J 13/00 - Systèmes de multiplexage en code
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/541 - Critères d’affectation ou de planification des ressources sans fil sur la base de critères de qualité en utilisant le niveau d’interférence

Abrégé

Embodiments of the present disclosure relate to a base station (BS) and method for communication in a communication network. The method comprising signaling at least one antenna port number from multiple antenna port numbers to a UE. Also, the method comprises receiving a data and a reference signal (RS) corresponding to the UE. The data and the RS are received on one or more receive antennas of the BS, wherein the RS comprises occupied RS subcarriers and null subcarriers. A location of occupied RS subcarriers and null subcarrier positions are selected according to signaled antenna port. Next, channel parameters are estimated using the occupied subcarriers associated with the received RS, and interference plus noise parameters using the null subcarriers. Thereafter, equalizing the received data on the receive antennas using the measured channel parameters and the interference plus noise parameters for interference rejection and data detection.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/01 - Égaliseurs

Abrégé

Embodiments of the present disclosure relate to system and method for generating a waveform in a communication network is disclosed. The method comprises determining precoder information using one of an indication from a base station and predetermined parameters corresponding to precoding. The predetermined parameters are one of coefficients of the precoding filter, and flatness requirement of the precoding filter. Also, the method comprises generating a sequence of output modulation symbols, wherein each output modulation symbol is obtained using a block of input data symbols and a lookup table. The lookup table is a function of the precoder information and predetermined modulation information. Next, the sequence of output modulation symbols is transformed using Discrete Fourier Transform to generate transformed output modulation symbols. Thereafter, mapping the transformed output modulation symbols using a plurality of subcarriers to generate a sub-carrier mapped symbols and processing the sub-carrier mapped symbols to generate a waveform.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples

Abrégé

Embodiments of the present disclosure provide a method of processing received signal using a massive MIMO base station (BS). The BS comprises a radio unit (RU), a distributed unit (DU) and an interface. The method comprises receiving a plurality of signals corresponding to the plurality of antennas, said signals comprises at least one of data signals, demodulation reference signals (DMRS) and sounding reference signals (SRS). The RU or DU performs a grouping operation on a subset of the plurality of signals corresponding to a subset of antennas to generate signal groups. The RU performs a first stage filtering on the signals associated with each group using group specific filters to obtain group specific filtered signals. The DU performs a second stage filtering on the group specific filtered signals to obtain second stage filtered signals.

Classes IPC  ?

• H04L 5/12 - Canaux caractérisés par le type de signal les signaux étant représentés par différentes modulations de phase d'une seule porteuse
• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission

Abrégé

Embodiments of the present disclosure relate to a method and system for transmitting a sequence with low peak-to-average-power-ratio (PAPR). A communication system receives control data. A transmitter of the communication system comprises a plurality of sequences which are associated with the control data in the transmitter. The transmitter selects a sequence from the plurality of sequence. The selected sequence is rotated, pre-coded for generating pre-coded sequence. DFT is applied on the pre-coded sequence for generating frequency domain signals. The frequency domain signals are processed and corresponding waveform is transmitted to a receiver of the communication system. The receiver receives the waveform and is processed to extract the sequence from the waveform. The receiver correlates the extracted sequence with plurality of sequences stored in receiver memory to detect the control data. The generated waveform has low PAPR.

Classes IPC  ?

• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively related to methods and systems for improving coverage of a cellular network. The method comprising obtaining a transmission power capability of a user equipment (UE), and determining a time-frequency opportunities allocated to the UE and a modulation and coding scheme (MCS) associated with the UE. Thereafter, indicating an increase in the instantaneous transmit power level to the UE based on the transmission power capability of the UE, the time-frequency opportunities and the associated MCS. The method also comprises obtaining the number of Resource Elements (REs) available for PUSCH transmission. A Transport Block Size is obtained for the REs obtained and is transmitted by adding Cyclic Redundancy Check. The procedure also includes the usage of uplink symbols in special slots. The method also comprising the usage of Reference Symbols across the transmission opportunities based on the UE capability.

Classes IPC  ?

• H04W 24/02 - Dispositions pour optimiser l'état de fonctionnement
• H04W 4/00 - Services spécialement adaptés aux réseaux de télécommunications sans filLeurs installations
• H04W 52/04 - Commande de puissance d'émission [TPC Transmission power control]

Abrégé

Embodiments of the present disclosure relate to a method and system to selecting a waveform in a communication network. The method comprises selecting at least one sequence from a plurality of sequences for transmitting, said plurality of sequences comprises a plurality of sub-set of sequences such that a sequence in a sub-set of sequences is a cyclic shifted version another sequence in said sub-set of sequences. Also, the method comprises rotating at least one sequence from a plurality of sequences by 90 degrees to produce at least one rotated sequence. Further, the method comprises transforming the at least one rotated sequence into frequency domain using a Discrete Fourier Transform (DFT) to generate a transformed sequence and mapping the transformed sequence using a plurality of subcarriers to generate a mapped sequence. Thereafter, the method comprises processing the mapped sequence to generate a waveform having an optimized PAPR, optimized auto and cross-correlation.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 13/00 - Systèmes de multiplexage en code
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments of the present disclosure are related a method for wireless communication. The method comprises receiving by a base station (BS), signals from a plurality of user equipment's (UEs) and obtaining channel estimates associated with each UE using the received signals. Next, calculating a first metric for each UE, and each of the plurality of beams associated with the BS using the obtained channel estimates and determining one or more best beams from a plurality of beams associated with the BS, and a second metric for each UE using the first metric. Further, segregating the UEs into groups based on the determined one or more best beams and the second metric. Thereafter, performing beamforming on control channel based on the one or more best beams, and performing allocation of at least one of resources, modulation and coding scheme for a control channel based on the segregated groups.

Classes IPC  ?

• H04W 72/12 - Planification du trafic sans fil
• H04W 72/1273 - Jumelage du trafic à la planification, p. ex. affectation planifiée ou multiplexage de flux de flux de données en liaison descendante
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04L 1/20 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue en utilisant un détecteur de la qualité du signal
• H04W 72/0446 - Ressources du domaine temporel, p. ex. créneaux ou trames
• H04W 72/0453 - Ressources du domaine fréquentiel, p. ex. porteuses dans des AMDF [FDMA]
• H04W 72/044 - Affectation de ressources sans fil sur la base du type de ressources affectées
• H04W 72/23 - Canaux de commande ou signalisation pour la gestion des ressources dans le sens descendant de la liaison sans fil, c.-à-d. en direction du terminal

Abrégé

Embodiments of the present disclosure provide a method of communication in a base station (BS). The BS comprising a distributed unit (DU) and at least one radio unit (RU), said DU performs High-PHY processing and said RU performs low-PHY processing. The method comprises transmitting, by the DU, a control information to the at least one RU using at least one of a c-plane message and a m-plane message, and data using a u-plane message. The u-plane message is transmitted in one of a semi persistent and periodic technique. The transmitting of the at least one of a c-plane message and a m-plane message indicates the u-plane data as one of a semi persistent and a periodic, said transmitting is valid for the u-plane messages carrying the u-plane data for a predetermined time period.

Classes IPC  ?

• H04W 88/08 - Dispositifs formant point d'accès
• H04W 28/08 - Équilibrage ou répartition des charges
• H04W 72/04 - Affectation de ressources sans fil

Abrégé

Embodiments herein provide method of determining modulation and coding scheme (MCS) at a base station (BS). The method comprises obtaining, by the BS, downlink channel state information (DL-CSI) corresponding to a plurality of UEs. Also, the method comprises receiving feedback from the plurality of UEs, said feedback is at least one of explicit interference power and noise power feedback, post processing signal power-to-interference power plus noise power-based and determining MCS associated with a subset of UEs from the plurality of UEs using a predefined mapping between the MCS and a combination of DL-CSI and the feedback from the plurality of UEs. Further, the method comprises indicating the determined MCS to the subset of UEs from the plurality of UEs.

Classes IPC  ?

• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04B 7/0417 - Systèmes de rétroaction
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04B 17/336 - Rapport signal/interférence ou rapport porteuse/interférence

Abrégé

Embodiments of the present disclosure relates to a method and system to schedule a pool of resources to a plurality of user equipment's (UEs). The method comprises grouping the UEs using inputs from UEs, to obtain a plurality of groups. Also, method comprises determining a pivot UE from the UEs using a first metric associated with each of the UEs, associated with a selected group from the plurality of groups. Further, the method comprises pairing the pivot UE with at least one UE using a second metric, wherein the at least one UE is associated with the selected group. Next, precoding weights are determined for each of the plurality of UE's associated with the selected group. Thereafter, transmitting data and reference signals associated with each UE associated with the selected group, using the corresponding precoding weights on a sub-set of pool of resources.

Classes IPC  ?

• H04W 72/12 - Planification du trafic sans fil
• H04W 72/04 - Affectation de ressources sans fil
• H04B 7/0452 - Systèmes MIMO à plusieurs utilisateurs
• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission

Abrégé

Embodiments of the present disclosure relates to a method for allocating resources to a plurality of users by a base station in a communication network. The method comprises obtaining a plurality of parameters associated with each of the plurality of users. The plurality of parameters is at least one of a buffer occupancy, a channel quality, and a channel state information acquisition capability. Also, the method comprises segregating the users into a plurality of groups using at least one of the plurality of parameters, wherein each group comprises one or more users. Further, the method comprises obtaining a group specific metric for each of the plurality of groups using at least one of the plurality of parameters, and allocating resources to the one or more users of the plurality of groups using the group specific metric.

Classes IPC  ?

• H03H 7/40 - Adaptation automatique de l'impédance de charge à l'impédance de la source
• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H04W 28/02 - Gestion du trafic, p. ex. régulation de flux ou d'encombrement
• H04B 7/0452 - Systèmes MIMO à plusieurs utilisateurs

Abrégé

Embodiments of the present disclosure relate to system and method for generating a waveform in a communication network is disclosed. The method comprises determining precoder information using one of an indication from a base station and predetermined parameters corresponding to precoding. The predetermined parameters are one of coefficients of the precoding filter, and flatness requirement of the precoding filter. Also, the method comprises generating a sequence of output modulation symbols, wherein each output modulation symbol is obtained using a block of input data symbols and a lookup table. The lookup table is a function of the precoder information and pre-determined modulation information. Next, the sequence of output modulation symbols is transformed using Discrete Fourier Transform to generate transformed output modulation symbols. Thereafter, mapping the transformed output modulation symbols using a plurality of subcarriers to generate a sub-carrier mapped symbols and processing the sub-carrier mapped symbols to generate a waveform.

Classes IPC  ?

• H04B 7/06 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées à la station d'émission
• H03B 28/00 - Génération d'oscillations par des procédés non couverts par les groupes , y compris la modification de la forme d'onde afin de produire des oscillations sinusoïdales
• G06F 1/03 - Générateurs de fonctions numériques travaillant, au moins partiellement, par consultation de tables

Abrégé

Embodiments of the present disclosure are related to a receiver and a method for receiving signal. The method comprises estimating, by a receiver, channel for each of a plurality of antennas using the received signal stream, to produce a plurality of estimated channels. Also, method comprises grouping a predetermined number of received signals from the received signal stream and estimated channels associated with the received signals to obtain a plurality of groups. Further, a group specific filtering is performed on the received signals and corresponding estimated channels of each of the plurality of groups to obtain filtered received signals and a plurality of filtered estimated channels. Thereafter, the method comprises performing second filtering on all the filtered received signals to produce second filtered signals, which are processed to produce an output.

Classes IPC  ?

• H04L 27/01 - Égaliseurs
• H04L 25/02 - Systèmes à bande de base Détails

Abrégé

Embodiments of the present disclosure relate to a method and system to generate a waveform in a communication network. The transmitter receives an input data and transmit a generated waveform to another communication system. The input data is spread with a spread code to generate a spread data and rotated using a constellation rotation operation to produce a rotated data. The rotated data is then precoded using precoding filter to produce a precoded data, and transformed into DFT output data using DFT operation. The DFT output data is then mapped with subcarriers to generate the sub-carrier mapped DFT data and modulated using Orthogonal Frequency Division Multiplexing (OFDM) modulation to generate the waveform with low PAPR.

Classes IPC  ?

• H04B 1/69 - Techniques d'étalement de spectre
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04B 1/7103 - Aspects liés aux interférences les parasites étant des interférences d'accès multiple
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs

Abrégé

The present disclosure discloses a method and a system for providing a code cover to Orthogonal Frequency Division Multiplexing (OFDM) symbols in a multiple user system. A data sequence is received from each of a plurality of users. Further, a reference sequence is generated for the data sequence of each of the plurality of users. Each of the reference sequence is multiplied with a code cover which are orthogonal to each other. Each of the reference sequence is time-multiplexed with corresponding data sequence, to generate a corresponding multiplexed sequence. Further, a Discrete Fourier Transform (DFT) is performed on each of the multiplexed sequence to generate a corresponding DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol. Lastly, the corresponding DFT-s-OFDM symbol is processed for transmitting over corresponding one or more channels.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 27/20 - Circuits de modulationCircuits émetteurs
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplied sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/08 - Affectation de ressources sans fil sur la base de critères de qualité

Abrégé

The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/08 - Affectation de ressources sans fil sur la base de critères de qualité

Abrégé

Embodiments of the present disclosure relate to a method and system to generate a waveform in a communication network. The transmitter receives an input data and transmit a generated waveform to another communication system. The input data is spread with a spread code to generate a spread data and rotated using a constellation rotation operation to produce a rotated data. The rotated data is then precoded using precoding filter to produce a precoded data, and transformed into DFT output data using DFT operation. The DFT output data is then mapped with subcarriers to generate the sub-carrier mapped DFT data and modulated using Orthogonal Frequency Division Multiplexing (OFDM) modulation to generate the waveform with low PAPR.

Classes IPC  ?

• H04B 1/69 - Techniques d'étalement de spectre
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04B 1/7103 - Aspects liés aux interférences les parasites étant des interférences d'accès multiple
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively relate to method and receiver for detecting data in a communication network. The method comprises transforming by a receiver, a received signal in to frequency domain to generate transformed signal. Also, the method comprises equalizing the transformed signal to obtain an estimated precoded signal, which is transformed using inverse Fourier transform to obtain a time domain signal. The time domain signal is de-rotated to produce de-rotated data, on which processing is performed by separating real part and imaginary part associated with the de-rotated signal. The real part and the imaginary parts are filtered and combined to produce a signal, that is demodulated to detect the signal.

Classes IPC  ?

• H04L 27/34 - Systèmes à courant porteur à modulation de phase et d'amplitude, p. ex. en quadrature d'amplitude
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs

Abrégé

Embodiments of the present disclosure are related a method for wireless communication. The method comprises receiving by a base station (BS), signals from a plurality of user equipment's (UEs) and obtaining channel estimates associated with each UE using the received signals. Next, calculating a first metric for each UE, and each of the plurality of beams associated with the BS using the obtained channel estimates and determining one or more best beams from a plurality of beams associated with the BS, and a second metric for each UE using the first metric. Further, segregating the UEs into groups based on the determined one or more best beams and the second metric. Thereafter, performing beamforming on control channel based on the one or more best beams, and performing allocation of at least one of resources, modulation and coding scheme for a control channel based on the segregated groups.

Classes IPC  ?

• H04B 7/02 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes
• H04W 72/04 - Affectation de ressources sans fil
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments herein provide method of determining modulation and coding scheme (MCS) at a base station (BS). The method comprises obtaining, by the BS, downlink channel state information (DL-CSI) corresponding to a plurality of UEs. Also, the method comprises receiving feedback from the plurality of UEs, said feedback is at least one of explicit interference power and noise power feedback, post processing signal power-to-interference power plus noise power-based and determining MCS associated with a subset of UEs from the plurality of UEs using a predefined mapping between the MCS and a combination of DL-CSI and the feedback from the plurality of UEs. Further, the method comprises indicating the determined MCS to the subset of UEs from the plurality of UEs.

Classes IPC  ?

• H04B 7/024 - Utilisation coopérative d’antennes sur plusieurs sites, p. ex. dans les systèmes à plusieurs points coordonnés ou dans les systèmes coopératifs à "plusieurs entrées plusieurs sorties" [MIMO]
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04W 72/04 - Affectation de ressources sans fil

Abrégé

Embodiments of the present disclosure relate to a method and system to selecting a waveform in a communication network. The method comprises selecting at least one sequence from a plurality of sequences for transmitting, said plurality of sequences comprises a plurality of sub-set of sequences such that a sequence in a sub-set of sequences is a cyclic shifted version another sequence in said sub-set of sequences. Also, the method comprises rotating at least one sequence from a plurality of sequences by 90 degrees to produce at least one rotated sequence. Further, the method comprises transforming the at least one rotated sequence into frequency domain using a Discrete Fourier Transform (DFT) to generate a transformed sequence and mapping the transformed sequence using a plurality of subcarriers to generate a mapped sequence. Thereafter, the method comprises processing the mapped sequence to generate a waveform having an optimized PAPR, optimized auto and cross-correlation.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 11/00 - Systèmes multiplex orthogonaux

Abrégé

Embodiments of the present disclosure relates to a method and system for detecting physical random access channel (PRACH) transmission from a plurality of user equipment's (UEs). The method comprises receiving an input signal from the plurality of UEs. Also, method comprises de-mapping a plurality of PRACH resources associated with the input signal to obtain a plurality of de-mapped PRACH resources. Further, the method comprises obtaining a power delay profile (PDP) estimate for the plurality of de-mapped PRACH resources by performing frequency domain correlation, and determining a threshold value by estimating noise variance for each of the plurality of PRACH resources. Furthermore, the method comprises identifying a plurality of preamble identities associated with the PRACH transmission by comparing the PDP profile with the threshold.

Classes IPC  ?

• H04W 74/08 - Accès non planifié, p. ex. ALOHA
• H04W 28/16 - Gestion centrale des ressourcesNégociation de ressources ou de paramètres de communication, p. ex. négociation de la bande passante ou de la qualité de service [QoS Quality of Service]
• H04W 52/28 - Commande de puissance d'émission [TPC Transmission power control] le TPC étant effectué selon des paramètres spécifiques utilisant le profil utilisateur, p. ex. la vitesse, la priorité ou l'état du réseau, p. ex. en attente, libre ou absence de transmission

Abrégé

The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04W 72/08 - Affectation de ressources sans fil sur la base de critères de qualité

Abrégé

Embodiments of the present disclosure discloses a method for enabling CSI feedback in Multiple Input Multiple Output (MIMO) wireless communication system comprising at least one user equipment (UE) and at least one base station (BS). The UE receives a plurality of downlink (DL) channel state information CSI from the BS and generate an explicit CSI from the received DL CSI. The UE determines a range of frequency domain values and channel state values from the received DL CSI. Upon determination, the UE performs IDFT to determine time domain channel impulse response matrices for the range of frequency domain values and perform CSI quantization. In another embodiment, the processor performs CSI quantization on either full range or a partial range of the time domain channel impulse response matrices to obtain optimized time domain channel explicit CSI and transmit the generated explicit CSI as a feedback to the one or more BS.

Classes IPC  ?

• H04B 7/0417 - Systèmes de rétroaction
• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 5/14 - Fonctionnement à double voie utilisant le même type de signal, c.-à-d. duplex
• H04W 72/04 - Affectation de ressources sans fil

Abrégé

Embodiments of the present disclosure relates to a method and system to schedule a pool of resources to a plurality of user equipment's (UEs). The method comprises grouping the UEs using inputs from UEs, to obtain a plurality of groups. Also, method comprises determining a pivot UE from the UEs using a first metric associated with each of the UEs, associated with a selected group from the plurality of groups. Further, the method comprises pairing the pivot UE with at least one UE using a second metric, wherein the at least one UE is associated with the selected group. Next, precoding weights are determined for each of the plurality of UE's associated with the selected group. Thereafter, transmitting data and reference signals associated with each UE associated with the selected group, using the corresponding precoding weights on a sub-set of pool of resources.

Classes IPC  ?

• H04L 12/911 - Contrôle d’admission au réseau et allocation de ressources, p.ex. allocation de bande passante ou renégociation en cours de communication

Abrégé

Embodiments of the present disclosure are related to system and method of classifying speed of at least one user equipment (UE). The method comprises receiving a plurality of input signals associated with the at least one UE. Also, method comprises estimating a plurality of channels using a plurality of reference signals associated with the inputs signals. Further, the method comprises computing a metric between the estimated plurality of channels and classifying speed of the at least one UE using the computed metric. The classifying the at least one UE using the metric comprises obtaining a power spectral density (PSD) from the metric, estimating a Doppler spectrum width using the PSD and classifying the at least one UE by comparing the Doppler spectrum width with one or more threshold values.

Classes IPC  ?

• H04W 24/00 - Dispositions de supervision, de contrôle ou de test
• G01S 11/10 - Systèmes pour déterminer la distance ou la vitesse sans utiliser la réflexion ou la reradiation utilisant les ondes radioélectriques utilisant l'effet Doppler
• H04W 36/32 - La resélection étant déclenchée par des paramètres spécifiques par des données de localisation ou de mobilité, p. ex. des données de vitesse

Abrégé

Embodiments of the present disclosure relate to a method and system to generate a waveform in a communication network. The transmitter receives an input data and transmit a generated waveform to another communication system. The input data is spread with a spread code to generate a spread data and rotated using a constellation rotation operation to produce a rotated data. The rotated data is then precoded using precoding filter to produce a precoded data, and transformed into DFT output data using DFT operation. The DFT output data is then mapped with subcarriers to generate the sub-carrier mapped DFT data and modulated using Orthogonal Frequency Division Multiplexing (OFDM) modulation to generate the waveform with low PAPR.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04B 1/7103 - Aspects liés aux interférences les parasites étant des interférences d'accès multiple
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs

Abrégé

Embodiments of the present disclosure are related to a receiver and a method for receiving signal. The method comprises estimating, by a receiver, channel for each of a plurality of antennas using the received signal stream, to produce a plurality of estimated channels. Also, method comprises grouping a predetermined number of received signals from the received signal stream and estimated channels associated with the received signals to obtain a plurality of groups. Further, a group specific filtering is performed on the received signals and corresponding estimated channels of each of the plurality of groups to obtain filtered received signals and a plurality of filtered estimated channels. Thereafter, the method comprises performing second filtering on all the filtered received signals to produce second filtered signals, which are processed to produce an output.

Classes IPC  ?

• H04B 1/10 - Dispositifs associés au récepteur pour limiter ou supprimer le bruit et les interférences
• H03H 17/02 - Réseaux sélecteurs de fréquence

Abrégé

The present disclosure discloses a method and a system for providing a code cover to Orthogonal Frequency Division Multiplexing (OFDM) symbols in a multiple user system. A data sequence is received from each of a plurality of users. Further, a reference sequence is generated for the data sequence of each of the plurality of users. Each of the reference sequence is multiplied with a code cover which are orthogonal to each other. Each of the reference sequence is time-multiplexed with corresponding data sequence, to generate a corresponding multiplexed sequence. Further, a Discrete Fourier Transform (DFT) is performed on each of the multiplexed sequence to generate a corresponding DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol. Lastly, the corresponding DFT-s-OFDM symbol is processed for transmitting over corresponding one or more channels.

Classes IPC  ?

• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 27/20 - Circuits de modulationCircuits émetteurs
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments of the present disclosure relate to a method and system for transmitting a sequence with low peak-to-average-power-ratio (PAPR). A communication system receives control data. A transmitter of the communication system comprises a plurality of sequences which are associated with the control data in the transmitter. The transmitter selects a sequence from the plurality of sequence. The selected sequence is rotated, pre-coded for generating pre-coded sequence. DFT is applied on the pre-coded sequence for generating frequency domain signals. The frequency domain signals are processed and corresponding waveform is transmitted to a receiver of the communication system. The receiver receives the waveform and is processed to extract the sequence from the waveform. The receiver correlates the extracted sequence with plurality of sequences stored in receiver memory to detect the control data. The generated waveform has low PAPR.

Classes IPC  ?

• H04L 29/02 - Commande de la communication; Traitement de la communication
• H04W 72/00 - Gestion des ressources locales
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments of the present disclosure are related to transmitter and method of transmitting a signal stream from a plurality of antennas, in a communication network. The method comprises grouping, by a transmitter, a plurality of consecutive signals of the input to obtain a plurality of groups. Also, the method comprises generating a plurality of physical resource groups (PRGs) using the plurality of groups and a corresponding plurality of subcarriers and precoding each of the PRGs using one or more weighing coefficients to obtain precoded plurality of groups. Further, the method comprises processing the precoded plurality of groups to obtain a processed plurality of groups and transmitting the plurality of processed signal groups using a corresponding plurality of antennas. An indication about variation of the weighing coefficients corresponding to each of plurality of PRGs is provided by the transmitter to the one or more receivers.

Classes IPC  ?

• H04B 7/0456 - Sélection de matrices de pré-codage ou de livres de codes, p. ex. utilisant des matrices pour pondérer des antennes
• H04W 72/04 - Affectation de ressources sans fil
• H04L 27/26 - Systèmes utilisant des codes à fréquences multiples
• H04B 7/12 - Diversité de fréquence
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04L 25/03 - Réseaux de mise en forme pour émetteur ou récepteur, p. ex. réseaux de mise en forme adaptatifs
• H03M 13/00 - Codage, décodage ou conversion de code pour détecter ou corriger des erreursHypothèses de base sur la théorie du codageLimites de codageMéthodes d'évaluation de la probabilité d'erreurModèles de canauxSimulation ou test des codes
• H04L 25/02 - Systèmes à bande de base Détails

Abrégé

Embodiments of the present disclosure relate to a method and system to generate a waveform in a communication network. The transmitter receives an input data and transmit a generated waveform to another communication system. The input data is spread with a spread code to generate a spread data and rotated using a constellation rotation operation to produce a rotated data. The rotated data is then precoded using precoding filter to produce a precoded data, and transformed into DFT output data using DFT operation. The DFT output data is then mapped with subcarriers to generate the sub-carrier mapped DFT data and modulated using Orthogonal Frequency Division Multiplexing (OFDM) modulation to generate the waveform with low PAPR.

Classes IPC  ?

• H04B 1/69 - Techniques d'étalement de spectre
• H03B 28/00 - Génération d'oscillations par des procédés non couverts par les groupes , y compris la modification de la forme d'onde afin de produire des oscillations sinusoïdales
• H04L 27/00 - Systèmes à porteuse modulée

Abrégé

The present disclosure discloses a method and a system for providing a code cover to Orthogonal Frequency Division Multiplexing (OFDM) symbols in a multiple user system. A data sequence is received from each of a plurality of users. Further, a reference sequence is generated for the data sequence of each of the plurality of users. Each of the reference sequence is multiplied with a code cover which are orthogonal to each other. Each of the reference sequence is time- multiplexed with corresponding data sequence, to generate a corresponding multiplexed sequence. Further, a Discrete Fourier Transform (DFT) is performed on each of the multiplexed sequence to generate a corresponding DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s- OFDM) symbol. Lastly, the corresponding DFT-s-OFDM symbol is processed for transmitting over corresponding one or more channels.

Classes IPC  ?

• H04J 11/00 - Systèmes multiplex orthogonaux
• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively relate to method and receiver for detecting data in a communication network. The method comprises transforming by a receiver, a received signal in to frequency domain to generate transformed signal. Also, the method comprises equalizing the transformed signal to obtain an estimated precoded signal, which is transformed using inverse Fourier transform to obtain a time domain signal. The time domain signal is de-rotated to produce de-rotated data, on which processing is performed by separating real part and imaginary part associated with the de-rotated signal. The real part and the imaginary parts are filtered and combined to produce a signal, that is demodulated to detect the signal.

Classes IPC  ?

• H04B 1/06 - Récepteurs
• H04J 13/12 - Génération de codes orthogonaux
• H04B 7/04 - Systèmes de diversitéSystèmes à plusieurs antennes, c.-à-d. émission ou réception utilisant plusieurs antennes utilisant plusieurs antennes indépendantes espacées

Abrégé

The present disclosure discloses a method and a system for transmitting DFT-s-OFDM symbols. A data sequence for transmitting as an OFDM symbol is received as input from a data source. A reference sequence for transmitting along with the data sequence as the OFDM symbol is generated and time-multiplexed with the data sequence, to generate a multiplexed sequence. Thereafter, a Discrete Fourier Transform (DFT) operation is performed on the multiplexed sequence to generate a DFT-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) symbol that is further processed for transmitting over a channel. The transmission of the reference sequence and the data sequence in a single OFDM symbol provides better bandwidth utilization and flexibility in modulation of the reference sequence and the data sequence.

Classes IPC  ?

• H04L 5/00 - Dispositions destinées à permettre l'usage multiple de la voie de transmission
• H04J 11/00 - Systèmes multiplex orthogonaux

Abrégé

Embodiments of the present disclosure discloses a method for enabling CSI feedback in Multiple Input Multiple Output (MIMO) wireless communication system comprising at least one user equipment (UE) and at least one base station (BS). The UE receives a plurality of downlink (DL) channel state information CSI from the BS and generate an explicit CSI from the received DL CSI. The UE determines a range of frequency domain values and channel state values from the received DL CSI. Upon determination, the UE performs IDFT to determine time domain channel impulse response matrices for the range of frequency domain values and perform CSI quantization. In another embodiment, the processor performs CSI quantization on either full range or a partial range of the time domain channel impulse response matrices to obtain optimized time domain channel explicit CSI and transmit the generated explicit CSI as a feedback to the one or more BS.

Classes IPC  ?

• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04B 7/00 - Systèmes de transmission radio, c.-à-d. utilisant un champ de rayonnement
• H04W 72/00 - Gestion des ressources locales

Abrégé

Embodiments of the present disclosure are related, in general to communication, but exclusively relate to communication in a time division duplex (TDD) network. A user equipment (UE) transmits a Physical Random-Access Channel (PRACH) to an enhanced node base (eNodeB) even in low coverage scenario. The PRACH had to be transmitted in any available uplink sub-frame. The Narrow band - Internet of things (NB-IoT) N-PRACH channel for TDD (time division duplex) communication system with 5KHz sub carrier spacing is used for transmission in in-band, guard band and standalone band deployments. In available duration of 1 msec for uplink, multiple NPRACH symbols is be transmitted.

Classes IPC  ?

• H04B 7/212 - Accès multiple par répartition dans le temps
• H04L 5/14 - Fonctionnement à double voie utilisant le même type de signal, c.-à-d. duplex
• H04J 4/00 - Systèmes multiplex combinés à division de temps et à division de fréquence

Abrégé

The present disclosure, generally relates to Narrow band Internet of things (NB-IoT) Time division duplex (TDD) Physical Random Access Channel (PRACH) and Physical Uplink Channel. More particularly relates to sub-frame blanking for NB-IOT uplink by the base station (BS) in communication with the user equipment (UE) coupled with IoT. The base station monitors traffic conditions in the communication network and determine requirement of blanking the resources for PRACH transmission by the UE. Based on the blanking requirement, the BS identifies one or more sub-frames available for blanking and blank the identified sub-frames in at least one Uplink- Downlink (UL-DL) configuration. The BS then broadcasts an output signal comprising information associated with blanking across the communication network, thereby supporting uplink transmission for the seven available UL-DL configurations.

Classes IPC  ?

• H04W 56/00 - Dispositions de synchronisation
• H04W 74/00 - Accès au canal sans fil
• H04W 28/00 - Gestion du trafic du réseauGestion des ressources du réseau