COMMUNICATION APPARATUS, CONTROL METHOD FOR COMMUNICATION APPARATUS, AND STORAGE MEDIUM STORING PROGRAM

• US 20130237259A1
• Filed: 03/05/2013
• Published: 09/12/2013
• Est. Priority Date: 03/07/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Umehara, Makoto
• Granted Patent: US 9,320,004 B2
• Time in Patent Office: Days
• US Class Current: 455/500
• CPC Class Codes: H04L 67/563 Data redirection of data network streams
• CPC Class Codes: H04L 67/5651 Reducing the amount or size of exchanged application data
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Abstract

A communication apparatus includes a detection unit configured to detect received powers of a plurality of radio signals received during a first predetermined time period from another apparatus, and a transmission unit configured to transmit by proxy identification information of the another apparatus using a detection result by the detection unit as at least one condition.

Claims

1. A communication apparatus comprising:

a detection unit configured to detect received powers of a plurality of radio signals received during a first predetermined time period from another apparatus; and

a transmission unit configured to transmit by proxy identification information of the another apparatus using a detection result by the detection unit as at least one condition.

2. The communication apparatus according to claim 1, further comprising a determination unit configured to determine whether change amounts of the received powers of the plurality of radio signals received during the first predetermined time period fall below a first predetermined value,

wherein, if the change amount of the received powers of the plurality of radio signals received during the first predetermined time period fall below the first predetermined value, the transmission unit transmits by proxy the identification information of the another apparatus.

3. The communication apparatus according to claim 1, further comprising a determination unit configured to determine whether an average value of the received powers of the plurality of radio signals received during the first predetermined time period exceeds a second predetermined value,

wherein, if the average value of the received powers of the plurality of radio signals received during the first predetermined time period exceeds the second predetermined value, the transmission unit determines to transmit by proxy the identification information of the another apparatus.

4. The communication apparatus according to claim 1, further comprising a determination unit configured to determine whether to transmit by proxy the identification information of the another apparatus based on a detection result of the detection unit,

wherein, if proxy transmission is requested from the another apparatus of which identification information determined to be transmitted by proxy by the determination unit, the transmission unit transmits by proxy the identification information of the another apparatus.

5. The communication apparatus according to claim 1, wherein, if a second predetermined time period has elapsed after starting proxy transmission of the identification information of the another apparatus, the transmission unit stops the proxy transmission.

6. The communication apparatus according to claim 1, wherein if a stoppage of proxy transmission is requested from the another apparatus after starting the proxy transmission of the identification information of the another apparatus, the transmission unit stops the proxy transmission.

7. The communication apparatus according to claim 1, further comprising a determination unit configured to determine which of the another apparatus and the communication apparatus transmits by proxy identification information based on a detection result of the detection unit, the received powers of the plurality of radio signals received during the first predetermined time period, a state of the communication apparatus, and a state of the another apparatus,

wherein the transmission unit transmits by proxy the identification information of the another apparatus according to determination by the determination unit.

8. The communication apparatus according to claim 7, wherein the transmission unit transmits the identification information of the communication apparatus, and

the communication apparatus further comprising a stopping unit configured, if the determination unit determines that the another apparatus transmits by proxy identification information of the communication apparatus, to stop transmission of the identification information of the communication apparatus.

9. The communication apparatus according to claim 7, wherein the determination unit determines which of the another apparatus and the communication apparatus transmits by proxy identification information based on a remaining amount of a battery of the communication apparatus and a remaining amount of a battery of the another apparatus.

10. The communication apparatus according to claim 7, wherein the determination unit determines which of the another apparatus and the communication apparatus transmits by proxy identification information based on whether the communication apparatus and the another apparatus cyclically transmit information.

11. The communication apparatus according to claim 7, wherein the determination unit determines which of the another apparatus and the communication apparatus transmits by proxy identification information based on whether the communication apparatus or the another apparatus transmits by proxy identification information of a different apparatus.

12. The communication apparatus according to claim 1, further comprising:

a determination unit configured, based on received powers of a plurality of radio signals received from each of a plurality of other apparatuses during the first predetermined time period, to determine whether to transmit by proxy identification information of each of the plurality of other apparatuses,

wherein the transmission unit transmits by proxy the identification information of each of the plurality of other apparatuses according to determination by the determination unit.

13. The communication apparatus according to claim 1, further comprising a determination unit configured to determine whether to transmit by proxy identification information of the another apparatus based on a detection result by the detection unit, and a type of information included in the radio signals received during the first predetermined time period from the another apparatus,

wherein the transmission unit transmits by proxy the identification information of the another apparatus according to determination by the determination unit.

14. The communication apparatus according to claim 1, further comprising:

a determination unit configured to determine whether to transmit by proxy the identification information of the another apparatus based on a detection result of the detection unit; and

a control unit configured to control a back-off time in a case of starting data transmission according to determination of the determination unit.

15. A communication apparatus comprising:

a determination unit configured, based on received powers of a plurality of radio signals received during a first predetermined time period from another apparatus, to determine whether the another apparatus transmits by proxy identification information of the communication apparatus, and

a stopping unit configured, according to determination that the another apparatus transmits by proxy the identification information of the communication apparatus, to stop transmission of the identification information of the communication apparatus.

16. A communication apparatus comprising:

a determination unit configured, based on change amounts of a distance in a predetermined time period between the communication apparatus and the another apparatus, to determine whether to transmit by proxy identification information of the another apparatus, and

a transmission unit configured to transmit by proxy the identification information of the another apparatus according to determination by the determination unit that the identification information of the another apparatus is transmitted by proxy.

17. A method for controlling a communication apparatus, the method comprising:

detecting received powers of a plurality of radio signals received during a first predetermined time period from another apparatus, and

transmitting by proxy identification information of the another apparatus according to the received powers of the plurality of radio signals.

18. A computer-readable storage medium storing a program for causing a computer to execute a method according to claim 17.

19. A method for controlling a communication apparatus, the method comprising:

determining, based on received powers of a plurality of radio signals received during a first predetermined time period from another apparatus, whether the another apparatus transmits by proxy identification information of the communication apparatus; and

stopping transmission of the identification information of the communication apparatus according to determination that the another apparatus transmits by proxy the identification information of the communication apparatus.

20. A computer-readable storage medium storing a program for causing a computer to execute a method according to claim 19.

21. A method for controlling a communication apparatus, the method comprising:

determining, based on change amounts of a distance between the communication apparatus and another apparatus in a predetermined time period, whether to transmit by proxy identification information of the another apparatus; and

transmitting by proxy the identification information of the another apparatus according to determination that the identification information of the another apparatus is transmitted by proxy.

22. A computer-readable storage medium storing a program for causing a computer to execute a method according to claim 21.

23. A communication apparatus comprising:

a determination unit configured, based on a positional relationship between the communication apparatus and another apparatus which is measured during a first predetermined time period from the another apparatus, to determine whether to transmit identification information of the another apparatus instead; and

a transmission unit configured, if the determination unit determines to transmit the identification information of the another apparatus instead, to continuously transmit the identification information of the another apparatus, on behalf of the another apparatus.

24. The communication apparatus according to claim 23, wherein, if the determination unit determines that the communication apparatus and another communication apparatus perform transmission instead, the determination unit further determines, based on changes of a state of the communication apparatus and a state of another apparatus, whether to transmit identification information of the another apparatus instead.

25. The communication apparatus according to claim 23, wherein the determination unit determines which of the another apparatus and the communication apparatus transmits by proxy identification information based on a remaining amount of a battery of the communication apparatus and a remaining amount of a battery of the another apparatus.

26. The communication apparatus according to claim 23, wherein the determination unit determines, based on a received power of a radio signal received during a predetermined time period from another apparatus, whether to transmit identification information of the another apparatus instead.

27. The communication apparatus according to claim 23, wherein the determination unit determines, if change amounts of received powers of a plurality of radio signals received during the predetermined time period fall below a predetermined value, to transmit by proxy identification information of the another apparatus.

28. A communication apparatus comprising:

a confirmation unit configured to confirm a proxy apparatus that transmits identification information of the communication apparatus; and

a stopping unit configured, if the confirmation unit confirms the proxy apparatus, to stop transmission of the identification information of the communication apparatus.

29. The communication apparatus according to claim 28, further comprising a re-transmission unit configured to cyclically re-transmit the identification information of the communication apparatus in a case where the confirmation unit cannot confirm that the proxy apparatus transmits the identification information of the communication apparatus.

30. A communication apparatus comprising:

a confirmation unit configured to confirm a proxy apparatus that transmits identification information of the communication apparatus; and

a request unit configured to request the proxy apparatus to stop transmission of the identification information of the communication apparatus.

31. The communication apparatus according to claim 30, wherein the request unit requests the proxy apparatus to stop transmission of the identification information of the communication apparatus according to a received power of a radio signal which the proxy apparatus transmits.

32. The communication apparatus according to claim 30, wherein the request unit requests the proxy apparatus to stop transmission of the identification information of the communication apparatus according to a received power change amount of a radio signal which the proxy apparatus transmits.

33. A method for controlling a communication apparatus, the method comprising:

determining, based on a positional relationship between the communication apparatus and another apparatus which is measured during a first predetermined time period from the another apparatus, whether to transmit identification information of the another apparatus instead; and

continuously transmit, if it is determined that the identification information of the another apparatus is transmitted instead, the identification information of the another apparatus, on behalf of the another apparatus.

34. A computer-readable storage medium storing a program for causing a computer to execute a method according to claim 33.