The present disclosure relates to near-end crosstalk (NEXT) cancellation. A transmit communication signal is transmitted over a first Digital Subscriber Line (DSL) connection using a first group of frequencies and a receive communication signal is received over a second DSL connection using a second group of frequencies that at least partially overlaps the first group of frequencies. A crosstalk correlation between the first and second communication signals is determined. Based on the crosstalk correlation, a crosstalk cancellation signal is generated. The crosstalk cancellation signal is subtracted from the second communication signal, with the intention of reducing NEXT.
Apparatus and methods for providing small cell backhaul are disclosed. A network node that acts as a gateway for a local communication network to a main communication network through a bonded link with the main communication network also provides a wireless communication module with a backhaul communication link to the main communication network through its bonded link. A switch module in the network node switches communication traffic between the local communication network, the wireless communication module and the bonded link to the main communication network. The network node may power the wireless communication module utilizing remote power provided by the main communication network, the local communication network, and/or a local source of power. Apparatus and methods for providing a transparent bonded link through a network access multiplexer are also disclosed, including management of the bonded link and of nodes subtending from the bonded link.
The present disclosure relates to near-end crosstalk (NEXT) cancellation. A transmit communication signal is transmitted over a first Digital Subscriber Line (DSL) connection using a first group of frequencies and a receive communication signal is received over a second DSL connection using a second group of frequencies that at least partially overlaps the first group of frequencies. A crosstalk correlation between the first and second communication signals is determined. Based on the crosstalk correlation, a crosstalk cancellation signal is generated. The crosstalk cancellation signal is subtracted from the second communication signal, with the intention of reducing NEXT.
Systems and methods for connecting and disconnecting to a DSL ring are provided. A cross connect node is used to connect multiple endpoints into a DSL ring. When a given endpoint is powered down, a cross connect bypasses that endpoint such that the ring is maintained. POTS service is provided irrespective of whether the endpoint is bypassed for the purpose of the ring. The status of a bypassed node can be ascertained using baseband signalling.
Apparatus and methods for providing small cell backhaul are disclosed. A network node that acts as a gateway for a local communication network to a main communication network through a bonded link with the main communication network also provides a wireless communication module with a backhaul communication link to the main communication network through its bonded link. A switch module in the network node switches communication traffic between the local communication network, the wireless communication module and the bonded link to the main communication network. The network node may power the wireless communication module utilizing remote power provided by the main communication network, the local communication network, and/or a local source of power. Apparatus and methods for providing a transparent bonded link through a network access multiplexer are also disclosed, including management of the bonded link and of nodes subtending from the bonded link.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
Systems and methods for connecting and disconnecting to a DSL ring are provided. A cross connect node is used to connect multiple endpoints into a DSL ring. When a given endpoint is powered down, a cross connect bypasses that endpoint such that the ring is maintained. POTS service is provided irrespective of whether the endpoint is bypassed for the purpose of the ring. The status of a bypassed node can be ascertained using baseband signalling.
Dynamic, asymmetric rings and related communication equipment and methods are disclosed. Various features may be implemented to provide any or all of several degrees of freedom for managing resources in a communication network. Communication rates may be optimized on a node-to-node basis or overall on a network level. Different rates may be configured and possibly dynamically adjusted between different nodes, and/or for different directions of traffic transfer. Bandwidth can be dynamically allocated along a string of the communication nodes in a ring or linear topology in some embodiments. Direction of traffic transfer represents an additional possible degree of freedom in a ring topology, in that traffic can be transferred in either direction in a ring, such as the direction of least delay.
Apparatus and methods relating to synchronization of communication equipment are disclosed. Synchronization information received from a bonded communication link can be used to synchronize local and/or remote communication equipment, such as femtocell sites coupled to nodes in a ring network. This may involve isolating a frequency reference signal from a DSL (Digital Subscriber Line) communication link which is a constituent link of a bonded communication link, for example. In a ring network, received synchronization information could be used in synchronizing a locally connected installation of communication equipment, and passed for transmission in the ring network for synchronizing other communication equipment. Such dropping and passing of an analog frequency reference signal could be applied in networks having other topologies as well. At least some embodiments of the invention are applicable to optical links. One or more dedicated wavelengths of an optical link could be used to transfer a frequency reference signal, for example. Other functions, such as quality monitoring, quality reporting, and/or predictive traffic forwarding may be provided in some embodiments.
Apparatus and methods relating to synchronization of communication equipment are disclosed. Synchronization information received from a bonded communication link can be used to synchronize local and/or remote communication equipment, such as femtocell sites coupled to nodes in a ring network. This may involve isolating a frequency reference signal from a DSL (Digital Subscriber Line) communication link which is a constituent link of a bonded communication link, for example. In a ring network, received synchronization information could be used in synchronizing a locally connected installation of communication equipment, and passed for transmission in the ring network for synchronizing other communication equipment. Such dropping and passing of an analog frequency reference signal could be applied in networks having other topologies as well. At least some embodiments of the invention are applicable to optical links. One or more dedicated wavelengths of an optical link could be used to transfer a frequency reference signal, for example. Other functions, such as quality monitoring, quality reporting, and/or predictive traffic forwarding may be provided in some embodiments.
Apparatus and methods relating to bonded interconnection of local communication networks are disclosed. Bonded communication links, including multiple constituent links that have been bonded together, are terminated to enable communications over the bonded links using bandwidth available on the constituent links. A cross-connect function determines whether received communication traffic is to be forwarded to one or more of a local communication network and the terminated bonded links. The received communication traffic is forwarded in accordance with the determination. The local communication networks may include ring networks, linear networks, or both. The bonded links and links between nodes in a local communication network are bonded DSL (Digital Subscriber Line) links in some embodiments. Bonding of DSL links in this manner can be used, for instance, to extend the reach of DSL service without sacrificing bandwidth.
Dynamic, asymmetric rings and related communication equipment and methods are disclosed. Various features may be implemented to provide any or all of several degrees of freedom for managing resources in a communication network. Communication rates may be optimized on a node-to-node basis or overall on a network level. Different rates may be configured and possibly dynamically adjusted between different nodes, and/or for different directions of traffic transfer. Bandwidth can be dynamically allocated along a string of the communication nodes in a ring or linear topology in some embodiments. Direction of traffic transfer represents an additional possible degree of freedom in a ring topology, in that traffic can be transferred in either direction in a ring, such as the direction of least delay.
Apparatus and methods relating to synchronization of communication equipment are disclosed. Synchronization information received from a bonded communication link can be used to synchronize local and/or remote communication equipment, such as femtocell sites coupled to nodes in a ring network. This may involve isolating a frequency reference signal from a DSL (Digital Subscriber Line) communication link which is a constituent link of a bonded communication link, for example. In a ring network, received synchronization information could be used in synchronizing a locally connected installation of communication equipment, and passed for transmission in the ring network for synchronizing other communication equipment. Such dropping and passing of an analog frequency reference signal could be applied in networks having other topologies as well. At least some embodiments of the invention are applicable to optical links. One or more dedicated wavelengths of an optical link could be used to transfer a frequency reference signal, for example. Other functions, such as quality monitoring, quality reporting, and/or predictive traffic forwarding may be provided in some embodiments.
Apparatus and methods relating to bonded interconnection of local communication networks are disclosed. Bonded communication links, including multiple constituent links that have been bonded together, are terminated to enable communications over the bonded links using bandwidth available on the constituent links. A cross -connect function determines whether received communication traffic is to be forwarded to one or more of a local communication network and the terminated bonded links. The received communication traffic is forwarded in accordance with the determination. The local communication networks may include ring networks, linear networks, or both. The bonded links and links between nodes in a local communication network are bonded DSL (Digital Subscriber Line) links in some embodiments. Bonding of DSL links in this manner can be used, for instance, to extend the reach of DSL service without sacrificing bandwidth.
Apparatus and methods of remote powering of DSL ADMs are disclosed. In a subscriber communication node, at least communication components that enable the subscriber communication node to communicate with a network switching device, and possibly also subscriber communication components that enable one or more subscriber communication devices to communicate with the network switching device, can be powered either by a local power source or remotely through an electrically conductive twisted wire pair. A network node may derive its own power and also supply power to subscriber communication nodes through twisted wire pairs. A linear or ring topology of subscriber communication nodes can thus be kept operational, and subscriber communications can potentially also be maintained, when a local power source at one or more subscriber nodes becomes unavailable.
Dynamic, asymmetric rings and related communication equipment and methods are disclosed. Various features may be implemented to provide any or all of several degrees of freedom for managing resources in a communication network. Communication rates may be optimized on a node-to-node basis or overall on a network level. Different rates may be configured and possibly dynamically adjusted between different nodes, and/or for different directions of traffic transfer. Bandwidth can be dynamically allocated along a string of the communication nodes in a ring or linear topology in some embodiments. Direction of traffic transfer represents an additional possible degree of freedom in a ring topology, in that traffic can be transferred in either direction in a ring, such as the direction of least delay.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Software for implementation and operation of a telecommunication network based on digital subscriber line (DSL) technology; software for operation of a telecommunication network node, namely DSL multiplexor operation software and DSL modem operation software; DSL multiplexor line cards; DSL modems. Installation, customization and maintenance of software for implementation and operation of a telecommunication network based on digital sunscriber line (DSL) technology; installation, customization and maintenance of software for operation of a telecommunication network node, namely DSL multiplexor operation software and DSL modem operation software.
