Transmission/reception apparatus and transmission/reception method for enabling coexistence of systems

• US 20070064783A1
• Filed: 07/05/2006
• Published: 03/22/2007
• Est. Priority Date: 07/05/2005
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Kurobe, Akio, Igata, Yuji, Koga, Hisao, Kuroda, Go, Ikeda, Koji, Mizugai, Yoshinori, Okamoto, Hiromu, Takasu, Shigeru, Yamada, Hirotoshi, Sugita, Takehiro, Ohshima, Junichi
• Application Number:
  US11/480,364
• Publication Number:
  US 20070064783A1
• Time in Patent Office: Days
• US Class Current: 375/222
• CPC Class Codes: H04B 2203/5408 using protocols
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning

Abstract

An in-home-system master station of an in-home communication system detects a frequency band (a channel number corresponding to a data communication subchannel) or a time slot used by each station of an access communication system, using a coexistence signal subchannel. Based on the detected information, the in-home-system master station determines a frequency band or a time slot to be used in the in-home communication system to which the in-home-system master station belongs, so as not to avoid overlapping the frequency or time slot used in the access communication system, and informs each in-home-system slave station of the determined frequency band or time slot.

Claims

1. A transmission/reception apparatus for a master station belonging to a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using frequency division multiplexing, the apparatus comprising:

a detection section for detecting a frequency band used by the second communication system;

a determination section for determining a frequency band to be used in the first communication system, based on the frequency band detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the frequency band determined by the determination section.

5. The transmission/reception apparatus according to claim 1, wherein

the informing section informs of the frequency band determined by the determination section using a control signal which is regularly transmitted in the first communication system and in which the frequency band is included.

9. The transmission/reception apparatus according to claim 1, wherein

the first and second communication systems are each a power line communication system, and the communication medium is a power line.

10. The transmission/reception apparatus according to claim 9, wherein

the first communication system is a power line communication system for in-home communication, and the second communication system is a power line communication system for access communication.

11. The transmission/reception apparatus according to claim 1, wherein

the first and second communication systems are each a wireless communication system, and the communication medium is radio wave.

2. A transmission/reception apparatus for a master station belonging to a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using frequency division multiplexing, the apparatus comprising:

a detection section for detecting the presence or absence of the second communication system;

a determination section for determining a frequency band to be used in the first communication system, based on the presence or absence detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the frequency band determined by the determination section.

6. The transmission/reception apparatus according to claim 2, wherein

the informing section informs of the frequency band determined by the determination section using a control signal which is regularly transmitted in the first communication system and in which the frequency band is included.

3. A transmission/reception apparatus for a master station belonging to a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using time division multiplexing, the apparatus comprising:

a detection section for detecting a time region used by the second communication system;

a determination section for determining a time region to be used in the first communication system, based on the time region detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the time region determined by the determination section.

7. The transmission/reception apparatus according to claim 3, wherein

the informing section informs of the time region determined by the determination section using a control signal which is regularly transmitted in the first communication system and in which the time region is included.

4. A transmission/reception apparatus for a master station belonging to a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using time division multiplexing, the apparatus comprising:

a detection section for detecting the presence or absence of the second communication system;

a determination section for determining a time region to be used in the first communication system, based on the presence or absence detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the time region determined by the determination section.

8. The transmission/reception apparatus according to claim 4, wherein

the informing section informs of the time region determined by the determination section using a control signal which is regularly transmitted in the first communication system and in which the time region is included.

12. A transmission/reception apparatus for a slave station belonging to a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using frequency division multiplexing, the apparatus comprising:

a reception section for receiving information about a frequency band to be used in the first communication system from a transmission/reception apparatus for a master station belonging to the first communication system; and

a setting section for setting a frequency band to be used for data communication in accordance with the information about the frequency band received by the reception section.

14. The transmission/reception apparatus according to claim 12, wherein

the first and second communication systems are each a power line communication system, and the communication medium is a power line.

16. The transmission/reception apparatus according to claim 14, wherein

the first communication system is a power line communication system for in-home communication, and the second communication system is a power line communication system for access communication.

18. The transmission/reception apparatus according to claim 12, wherein

the first and second communication systems are each a wireless communication system, and the communication medium is radio wave.

13. A transmission/reception apparatus for a slave station belonging to a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using time division multiplexing, the apparatus comprising:

a reception section for receiving information about a time region to be used in the first communication system from a transmission/reception apparatus for a master station belonging to the first communication system; and

a setting section for setting a time region to be used for data communication in accordance with the information about the time region received by the reception section.

15. The transmission/reception apparatus according to claim 13, wherein

the first and second communication systems are each a power line communication system, and the communication medium is a power line.

17. The transmission/reception apparatus according to claim 15, wherein

the first communication system is a power line communication system for in-home communication, and the second communication system is a power line communication system for access communication.

19. The transmission/reception apparatus according to claim 13, wherein

the first and second communication systems are each a wireless communication system, and the communication medium is radio wave.

20. A first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using frequency division multiplexing, the first communication system including:

a transmission/reception apparatus for a master station comprising;

a detection section for detecting a frequency band used by the second communication system;

a determination section for determining a frequency band to be used in the first communication system, based on the frequency band detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the frequency band determined by the determination section, and

the transmission/reception apparatus for a slave station comprising;

a reception section for receiving information about the frequency band to be used in the first communication system from the transmission/reception apparatus for a master station; and

a setting section for setting a frequency band to be used for data communication in accordance with the information about the frequency band received by the reception section.

21. A first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using frequency division multiplexing, the first communication system including:

a transmission/reception apparatus for a master station comprising;

a detection section for detecting the presence or absence of the second communication system;

a determination section for determining a frequency band to be used in the first communication system, based on the presence or absence detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the frequency band determined by the determination section, and

the transmission/reception apparatus for a slave station comprising;

a reception section for receiving information about the frequency band to be used in the first communication system from the transmission/reception apparatus for a master station; and

a setting section for setting a frequency band to be used for data communication in accordance with the information about the frequency band received by the reception section.

22. A first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using time division multiplexing, the first communication system including:

a transmission/reception apparatus for a master station comprising;

a detection section for detecting a time region used by the second communication system;

a determination section for determining a time region to be used in the first communication system, based on the time region detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the time region determined by the determination section, and

the transmission/reception apparatus for a slave station comprising;

a reception section for receiving information about the time region to be used in the first communication system from the transmission/reception apparatus for a master station; and

a setting section for setting a time region to be used for data communication in accordance with the information about the time region received by the reception section.

23. A first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using time division multiplexing, the first communication system including:

a transmission/reception apparatus for a master station comprising;

a detection section for detecting the presence or absence of the second communication system;

a determination section for determining a time region to be used in the first communication system, based on the presence or absence detected by the detection section; and

an informing section for informing a transmission/reception apparatus for a slave station belonging to the first communication system of the time region determined by the determination section, and

the transmission/reception apparatus for a slave station comprising;

a reception section for receiving information about the time region to be used in the first communication system from the transmission/reception apparatus for a master station; and

a setting section for setting a time region to be used for data communication in accordance with the information about the time region received by the reception section.

24. A transmission/reception method performed in a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using frequency division multiplexing, wherein

a transmission/reception apparatus for a master station executes the steps of:

detecting a frequency band used by the second communication system;

determining a frequency band to be used in the first communication system, based on the detected frequency band; and

informing a transmission/reception apparatus for a slave station belonging to the first communication system of the determined frequency band, and

the transmission/reception apparatus for a slave station executing the steps of;

receiving information about the frequency band to be used in the first communication system from the transmission/reception apparatus for a master station; and

setting a frequency band to be used for data communication in accordance with the received information about the frequency band.

25. A transmission/reception method performed in a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using frequency division multiplexing, wherein

a transmission/reception apparatus for a master station executes the steps of:

detecting the presence or absence of the second communication system;

determining a frequency band to be used in the first communication system, based on the detected presence or absence; and

informing a transmission/reception apparatus for a slave station belonging to the first communication system of the determined frequency band, and

the transmission/reception apparatus for a slave station executing the steps of;

receiving information about the frequency band to be used in the first communication system from the transmission/reception apparatus for a master station; and

setting a frequency band to be used for data communication in accordance with the received information about the frequency band.

26. A transmission/reception method performed in a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using time division multiplexing, wherein

a transmission/reception apparatus for a master station executes the steps of:

detecting a time region used by the second communication system;

determining a time region to be used in the first communication system, based on the detected time region; and

informing a transmission/reception apparatus for a slave station belonging to the first communication system of the determined time region, and

the transmission/reception apparatus for a slave station executing the steps of;

receiving information about the time region to be used in the first communication system from the transmission/reception apparatus for a master station; and

setting a time region to be used for data communication in accordance with the received information about the time region.

27. A transmission/reception method performed in a first communication system connected to a second communication system having a different communication scheme, via the same communication medium, using time division multiplexing, wherein

a transmission/reception apparatus for a master station executes the steps of:

detecting the presence or absence of the second communication system;

determining a time region to be used in the first communication system, based on the detected presence or absence; and

informing a transmission/reception apparatus for a slave station belonging to the first communication system of the determined time region, and

the transmission/reception apparatus for a slave station executing the steps of;

receiving information about the time region to be used in the first communication system from the transmission/reception apparatus for a master station; and

setting a time region to be used for data communication in accordance with the received information about the time region.