An image decoding method for decoding a current block, comprising: deriving a first candidate having a first motion vector used to decode a first block; deriving a second candidate having a second motion vector used to decode a second block; determining whether total number of candidates having first and second candidates is less than a maximum number; deriving a third candidate having third and fourth motion vectors when total number of candidates is less than the maximum number, the third motion vector identical to the first motion vector, the fourth motion vector identical to the second motion vector; and decoding a coded index corresponding to a candidate having a motion vector, wherein the maximum number is used to decode the coded index, the motion vector is used to decode the current block, and the candidate is one of a plurality having the first candidate, second candidate, and third candidate.
H04N 19/105 - Sélection de l’unité de référence pour la prédiction dans un mode de codage ou de prédiction choisi, p. ex. choix adaptatif de la position et du nombre de pixels utilisés pour la prédiction
H04N 19/174 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une zone de l'image, p. ex. un objet la zone étant une tranche, p. ex. une ligne de blocs ou un groupe de blocs
H04N 19/176 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une zone de l'image, p. ex. un objet la zone étant un bloc, p. ex. un macrobloc
H04N 19/503 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif mettant en œuvre la prédiction temporelle
The invention relates to the allocation of radio resources by a transmitting user equipment to perform a plurality of direct SL transmissions to one or more receiving user equipments. The allocation of radio resources within a SC period is restricted, for the SC period, by a maximum number of SL processes with which a transmitting user equipment is configured. A plurality of SL grants is acquired. Among the acquired SL grants a number of those SL grants is selected that have most recently been acquired before the start of the subsequent SC period. A plurality of SL processes is associated such that each of the plurality of SL process is associated with a different one of the selected number of SL grants. For each of the plurality of the SL processes, the radio resources are allocated. Each of the plurality of SL transmissions comprises at least one SCI transmission and at least one data transmission over the SL interface.
The present disclosure relates to transmitting transport blocks in subframes of a predefined length within a wireless communication system. A downlink control information including a resource grant comprising a predetermined modulation and a predetermined transport block size is received (user equipment is the transmitter) or generated (base station is the transmitter). Then transport block including channel coded data to be transmitted in a subframe with the predetermined modulation and the predetermined transport block size is generated. Sensing is performed in the subframes and based thereon, it is determined whether a partial subframe or a complete subframe is available for transmission of the generated transport block. Finally, the transport block is transmitted with a modified modulation different from the predetermined modulation if the partial rather than complete subframe is available. Correspondingly, at the receiver, the grant is received (user equipment is receiver) or generated (base station is the receiver), the size of the subframe in which the reception is expected is determined and then the transport block is received with a modified modulation if only the partial subframe is available.
The present invention relates to a D2D capable a communication method and to a transmitting user equipment, which transmits data to a receiving user equipment over a direct link data channel, uses the services of the eNode B in order to have resources allocated for transmitting said data. To this end the UE sends to the eNB scheduling information using resources of a subframe dedicated for standard uplink communication through the eNode B, rather than using resources on the subframe dedicated to D2D data transmission. In order to allow the eNB to distinguish whether the received scheduling request is for allocating resources for transmitting data over the direct link channel or over the eNB, UE may send along with the scheduling information also identification information associated to the scheduling information.
The invention relates to a method for dynamically indicating a TDD reconfiguration to the mobile station by encoding the dynamic TDD re-configuration indication into the DCI or CRC calculated for the DCI. In one embodiment, the TDD configuration indication is implicitly encoded as an RNTI into the CRC, when scrambling the CRC for the DCI with a TDD-RNTI. In another embodiment, the TDD configuration indication is part of the DCI payload, while the CRC for the DCI is scrambled with a cell identifier, identifying the target cell for which the dynamic TDD re- configuration is to be applied. In still another embodiment, the TDD configuration indication is part of the DCI payload, where the DCI payload further includes an invalid parameter indicating to the mobile station that the DCI carries the TDD configuration indication.
An image coding apparatus that codes an input image is disclosed. The image coding apparatus comprises a control circuit and storage electrically connected to the control circuit. The control circuit executes: converting, into a bin string, an offset value, used in an offset process to be applied to a pixel value of a reconstructed image corresponding to the input image; and performing bypass arithmetic coding on the bin string using fixed probability.
An image coding method of generating a bit-stream by coding an image for each block, comprises: deriving first merge candidates which are candidates of a motion vector and a reference picture index used in coding a current block, based on motion vector and reference picture index used in coding a block neighboring the current block; deriving second merge candidates having a predetermined vector as a motion vector, where a total number of candidates is not smaller than a maximum number; selecting a candidate used in coding the current block from first and second candidates; adding an index to identify selected candidates to the bit-stream. A reference picture index 0 is assigned to the initially derived second candidate, and a value obtained by incrementing a reference picture index of the second candidate derived immediately before by 1 is assigned to the reference picture index of the second candidate derived thereafter.
H04N 19/503 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif mettant en œuvre la prédiction temporelle
8.
IMAGE CODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING METHOD, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS
A moving picture decoding apparatus and method for decoding a current block. The apparatus comprises: a processor; and a non-transitory memory. The processor performs, using the non-transitory memory, processes including: deriving a first candidate from a first motion vector that has been used to decode a first block, the first block being adjacent to the current block; deriving a second candidate having a second motion vector that includes a non-zero value, the non-zero value assigned to a corresponding reference picture, the second motion vector not being derived by decoding a block adjacent to the current block; selecting a candidate from a plurality of candidates, the plurality of candidates including the first candidate and the second candidate; and decoding the current block using the selected candidate. The second candidate includes the non-zero value of the corresponding reference picture, selected from a plurality of referable reference pictures.
H04N 19/176 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une zone de l'image, p. ex. un objet la zone étant un bloc, p. ex. un macrobloc
H04N 19/52 - Traitement de vecteurs de mouvement par encodage par encodage prédictif
H04N 19/59 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif mettant en œuvre un sous-échantillonnage spatial ou une interpolation spatiale, p. ex. modification de la taille de l’image ou de la résolution
An image decoding method for decoding a current block, comprising: deriving a first candidate having a first motion vector used to decode a first block; deriving a second candidate having a second motion vector used to decode a second block; determining whether total number of candidates having first and second candidates is less than a maximum number; deriving a third candidate having third and fourth motion vectors when total number of candidates is less than the maximum number, the third motion vector identical to the first motion vector, the fourth motion vector identical to the second motion vector; and decoding a coded index corresponding to a candidate having a motion vector, wherein the maximum number is used to decode the coded index, the motion vector is used to decode the current block, and the candidate is one of a plurality having the first candidate, second candidate, and third candidate.
H04N 19/503 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage prédictif mettant en œuvre la prédiction temporelle
10.
METHOD OF SIGNAL GENERATION AND SIGNAL GENERATING DEVICE
Signal generation (and demodulation) methods/apparatuses are provided for generating (and demodulating) reception signals having irnproved reception quality in NLOS and LOS environments. Reception signals are obtained by receiving multiple transmission signals generated by power-changing each of first and second baseband signals, which are generated respectively from first and second information; phase changing the power changed first signal; and precoding the phase changed first signal and power changed second signal according to a matrix F to generate first and second signals for transmission on a common frequency at the same time, wherein the phase of the first signal is regularly changed according to a phase changing pattern using a phase change value sequentially selected from N values, where a difference between two adjacent values is 27t/N, N being an integer greater than the number of baseband signals and each N value being selected at least once within a determined period.
Signal generation (and demodulation) methods/apparatuses are provided for generating (and demodulating) reception signals having improved reception quality in NLOS and LOS environments. Reception signals are obtained by receiving multiple transmission signals generated by power-changing each of first and second baseband signals, which are generated respectively from first and second information; phase changing the power changed first signal; and precoding the phase changed first signal and power changed second signal according to a matrix F to generate first and second signals for transmission on a common frequency at the same time, wherein the phase of the first signal is regularly changed according to a phase changing pattern using a phase change value sequentially selected from N values, where a difference between two adjacent values is 211/N, N being an integer greater than the number of baseband signals and each N value being selected at least once within a determined period.
A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
Disclosed is a transmission scheme for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. According to the transmission scheme, a precoding weight multiplying unit multiplies a precoding weight by a baseband signal after a first mapping and a baseband signal after a second mapping and outputs the first modulated signal and the second modulated signal. In the precoding weight multiplying unit, precoding weights are regularly hopped.
Provided is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals to be transmitted over the same frequency bandwidth at the same time, including the steps of selecting a matrix F[i] from among N matrices, which define precoding performed on the plurality of baseband signals, while switching between the N matrices, i being an integer from 0 to N ~ 1, and N being an integer at least two, generating a first precoded signal z 1 and a second precoded signal z2, generating a first encoded block and a second encoded block using a predetermined error correction block encoding method, generating a baseband signal with M symbols from the first encoded block and a baseband signal with M symbols the second encoded block, and precoding a combination of the generated baseband signals to generate a precoded signal having M slots.
H04L 27/28 - Systèmes utilisant des codes à fréquences multiples à émission simultanée de fréquences différentes, chacune représentant un élément de code
15.
TRANSMISSION METHOD, TRANSMISSION DEVICE, RECEPTION METHOD, AND RECEPTION DEVICE
Provided is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals to be transmitted over the same frequency bandwidth at the same time, including the steps of selecting a matrix F[i] from among N matrices, which define precoding performed on the plurality of baseband signals, while switching between the N matrices, i being an integer from 0 to N - 1, and N being an integer at least two, generating a first precoded signal z1 and a second precoded signal z2, generating a first encoded block and a second encoded block using a predetermined error correction block encoding method, generating a baseband signal with M symbols from the first encoded block and a baseband signal with M symbols the second encoded block, and precoding a combination of the generated baseband signals to generate a precoded signal having M slots.
A terminal capable of reducing the resource regions in an uplink component band without increasing signaling even if a plurality of acknowledgment signals to downlink data transmitted respectively in a plurality of downlink component bands are transmitted from one uplink component band. A terminal (200) for making communication using the plurality of downlink component bands, wherein a PCFICH reception section (208) obtains CFI information indicating the number of symbols used for a control channel to which resource allocation information relating to downlink data addressed to a device is allocated for each of the downlink component bands, a mapping section (214); sets a resource region to which an acknowledgment signal to the downlink data is allocated for each of the plurality of downlink component bands according to the CFI information of each of the downlink component bands in an uplink component band set to the device, and maps the acknowledgment signals into the resource regions corresponding to the downlink component bands used for the allocation of the downlink data.
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