Communication apparatus and coexistence method for enabling coexistence of communication systems
AssigneePanasonic Corporation
InventorsAkio Kurobe, Go Kuroda, Koji Ikeda, Hisao Koga, Yuji Igata
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Abstract
In-home communication systems 110 and 130 and an access communication system 120 that are capable of co-existing. The communication systems 110 and 130 and the access communication system 120 are able to co-exist by utilizing TDM that is in synchronization with a power cycle. Further, communication system that needs to secure AV-QoS assigns transmission timing to a slave station within itself by synchronizing a beacon cycle with a cycle of a power line.
Claims6
A communication apparatus for allocating a transmission band to secure a quality of service (QoS) based on a reference signal, the communication apparatus belonging to (i) one or more in-home communication systems that perform communication within a limited region or (ii) an access communication system that connects the limited region to a wide area network, at least one of the in-home communication systems and the access communication system coexisting on a same communication medium by time division, the communication apparatus comprising:
- a power reference point extracting section operable to extract a reference point of a commercial power supply that is supplied on a power line;
- a TDM coexistence control section operable to (i) receive and transmit a coexistence signal in synchronization with the extracted reference point to detect the coexistence signal and (ii) perform time division of a time division multiplexing (TDM) cycle with another communication system based on the detected coexistence signal;
- and
- a transmission timing determining section operable to synchronize, in accordance with a result of the time division of the TDM cycle, a timing of transmitting the reference signal with the reference point extracted by the power reference point extracting section.
A method performed by a communication apparatus for allocating a transmission band to secure a quality of service (QoS) based on a reference signal, the communication apparatus belonging to (i) one or more in-home communication systems that perform communication within a limited region or (ii) an access communication system that connects the limited region to a wide area network, at least one of the in-home communication systems and the access communication system coexisting on a same communication medium by time division, the method comprising:
- extracting a reference point of a commercial power supply that is supplied on a power line;
- receiving and transmitting a coexistence signal in synchronization with the extracted reference point to detect the coexistence signal;
- performing time division of a time division multiplexing (TDM) cycle with another communication system based on the detected coexistence signal;
- and
- synchronizing, in accordance with a result of the time division of the TDM cycle, a timing of transmitting the reference signal with the reference point extracted by the extracting of the reference point.
An integrated circuit for use in a communication apparatus for allocating a transmission band to secure a quality of service QoS based on a reference signal, the communication apparatus belonging to (i) one or more in-home communication systems that perform communication within a limited region or (ii) an access communication system that connects the limited region to a wide area network at least one of the in-home communication systems and the access communication system coexisting on a same communication medium by time division, the integrated circuit comprising circuitry functioning as:
- a power reference point extracting section operable to extract a reference point of a commercial power supply that is supplied on a power line;
- a TDM coexistence control section operable to (i) receive and transmit a coexistence signal in synchronization with the extracted reference point to detect the coexistence signal and (ii) perform time division of a time division multiplexing (TDM) cycle with another communication system based on the detected coexistence signal;
- and
- a transmission timing determining section operable to synchronize, in accordance with a result of the time division of the TDM cycle, a timing of transmitting the reference signal with the reference point extracted by the power reference point extracting section.
Dependencies are inferred from the claim text.