Method for transmit and receive power control in mesh systems

• US 8,909,945 B2
• Filed: 04/05/2006
• Issued: 12/09/2014
• Est. Priority Date: 04/08/2005
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Rudolf, Marian, Roy, Vincent
• Primary Examiner(s): Brown, Michael J
• Application Number:
  US11/398,122
• Publication Number:
  US 20060253736A1
• Time in Patent Office: 3,170 Days
• Field of Search: 713/300, 713/330, 713/320, 370/318
• US Class Current: 713/300
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: H04L 27/2655 Synchronisation arrangements
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/18 TPC being performed according to specific parameters
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/286 during data packet transmission, e.g. high speed packet access [HSPA]
• CPC Class Codes: H04W 52/362 Aspects of the step size
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/46 in multi hop networks, e.g. wireless relay networks
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 52/54 Signalisation aspects of the TPC commands, e.g. frame structure
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A method and apparatus for controlling transmit and receive power level of a mesh point (MP) operating in a mesh wireless communication network of a plurality of MPs. Power capability information of a new MP is sent to at least one existing MP in the mesh network. The existing MP accepts the new MP as a member of the mesh network and sends allowed power setting information to the new MP. The new MP adjusts its power level in accordance with the allowed power setting information.

Claims

1. A method for use in a mobile station for controlling transmit power levels in a wireless network, the method comprising:

transmitting capability information of the mobile station that includes an indicator that indicates support for transmit power control by the mobile station;

receiving a message from another mobile station associated with the wireless network, wherein the message includes a field that indicates a transmit power change; and

adjusting a transmit power level of the mobile station based on the message.

2. The method of claim 1 wherein the transmitting includes at least one of transmitting via broadcast, multicast, or unicast, and wherein the transmitting further includes transmitting in a solicited manner or an un-solicited manner.

3. The method of claim 1 wherein the transmitting is performed during an association process or an authentication process.

4. The method of claim 1 wherein the transmitting is performed during a beacon interval or a probe response process.

5. The method of claim 1 wherein the transmitting includes transmitting a directed special purpose per-link message including the capability information or a multi-hop message including the power capability information.

6. The method of claim 1 wherein the capability information includes at least one of transmission power step size information, receive power step size information, operational mode information, bandwidth information, or frequency band information.

7. The method of claim 6, wherein the transmission power step size information includes minimum transmission power information, maximum transmission power information, or adjustment step size settings.

8. The method of claim 6, wherein the receive power step size information includes minimum receive power information, maximum receive power information, receive power adjustment step size settings, receive power sensitivity level information, or clear channel assessment (CCA) thresholds settings.

9. The method of claim 6, wherein the frequency band information includes a number of simultaneously operable bands or sub-bands.

10. The method of claim 1 wherein the receiving includes receiving an allowed power setting information by at least one of a broadcast message, a multicast message, or a unicast message and the receiving includes receiving in a solicited manner or an un-solicited manner.

11. The method of claim 1 wherein the receiving includes receiving an allowed power setting information in a BEACON frame or a PROBE RESPONSE frame.

12. The method of claim 1 wherein the receiving includes receiving an allowed power setting information in an ASSOCIATION or an AUTHENTICATION frame.

13. The method of claim 1 wherein the receiving includes receiving an allowed power setting information in a special purpose per-link frame or a multi-hop ALLOWED POWER SETTING frame.

14. The method of claim 1 wherein an allowed power setting information includes at least one of power master (PM) information, operational mode information, frequency band information, transmission power information, reception power information, clear channel assessment threshold information, timing information, measurement information, silent period information, or offset information.

15. The method of claim 1 wherein an allowed power setting information is associated with at least one of a network, a link, a path, a node, or a radio interface.

16. The method of claim 1 wherein an allowed power setting information includes absolute values, relative values, or a combination of absolute values and relative values.

17. The method of claim 1, further comprising:

establishing a peer-to-peer relationship with the other mobile station associated with the wireless network.

18. The method of claim 1, further comprising:

establishing a master-slave relationship with the other mobile station associated with the wireless network.

19. The method of claim 1 further comprising:

periodically receiving updated allowed power setting information.

20. The method of claim 1, further comprising:

transmitting a request for measurements regarding at least one of power settings, perceived signal-to-noise ratio (SNR), link margin values, perceived interference power, or channel busy times.

21. The method of claim 1 wherein the other mobile station associated with the wireless network is a power master (PM).

22. The method of claim 21 wherein the PM is identified as part of an initial set-up procedure.

23. The method of claim 1 wherein the mobile station is a power master (PM).

24. The method of claim 23 wherein the PM is identified as part of an initial set-up procedure.

25. The method of claim 1 wherein the transmitting includes transmitting at least one of a layer 2 frame, a layer 2 information element, a higher layer packet, or a higher layer information element.

26. The method of claim 1, further comprising:

transmitting a plurality of statistics and feedback to a controlling entity.

27. The method of claim 26, wherein the plurality of statistics include at least one of current TPC setting information, mode information, bandwidth information, simultaneous channel information, or channel statistics information.

28. A mobile station for use in a wireless network, the mobile station comprising:

a transmitter configured to transmit capability information of the mobile station that includes an indicator that indicates support for transmit power control by the mobile station;

a receiver configured to receive a message from another mobile station associated with the wireless network, wherein the message includes a field that indicates a transmit power change; and

a processor configured to adjust a transmit power level of the mobile station based on the message.

29. The mobile station of claim 28, wherein the transmitter is further configured to transmit capability information by at least one of a broadcast message, multicast message, or unicast message, and wherein the transmitter is further configured to transmit in a solicited manner or an un-solicited manner.

30. The mobile station of claim 28, wherein the transmitter is further configured to transmit during an association process or an authentication process.

31. The mobile station of claim 28, wherein the transmitter is further configured to transmit during a beacon interval or a probe response process.

32. The mobile station of claim 28, wherein the processor is further configured to transmit using a directed special purpose per-link message including the capability information or a multi-hop message including the capability information.

33. The mobile station of claim 28, wherein the capability information includes at least one of transmission power step size information, receive power step size information, operational mode information, bandwidth information, or frequency band information.

34. The mobile station of claim 33, wherein the transmission power step size information includes minimum transmission power information, maximum transmission power information, or adjustment step size settings.

35. The mobile station of claim 33, wherein the receive power step size information includes minimum receive power information, maximum receive power information, receive power adjustment step size settings, receive power sensitivity level information, or clear channel assessment (CCA) thresholds settings.

36. The mobile station of claim 33, wherein the frequency band information includes a number of simultaneously operable bands or sub-bands.

37. The mobile station of claim 28, wherein the receiver is further configured to receive an allowed power setting information by at least one of a broadcast message, a multicast message, or a unicast message and receive in a solicited manner or an un-solicited manner.

38. The mobile station of claim 28, wherein the receiver is further configured to receive an allowed power setting information in a BEACON frame or a PROBE RESPONSE frame.

39. The mobile station of claim 28, wherein the receiver is further configured to receive an allowed power setting information during an association process or an authentication process.

40. The mobile station of claim 28, wherein the receiver is further configured to receive an allowed power setting information in a special purpose per-link message including the power capability information or a multi-hop message including the power capability information.

41. The mobile station of claim 28 wherein an allowed power setting information includes at least one of:

power master (PM) information, operational mode information, frequency band information, transmission power information, reception power information, clear channel assessment threshold information, timing information, measurement information, silent period information, or offset information.

42. The mobile station of claim 28 wherein an allowed power setting information is associated with at least one of a network, a link, a path, a node, or a radio interface.

43. The mobile station of claim 28 wherein an allowed power setting information includes an absolute value, a relative value, or a combination thereof.

44. The mobile station of claim 28 wherein the processor is further configured to establish a peer-to-peer relationship with the other mobile station associated with the wireless network.

45. The mobile station of claim 28 wherein the processor is configured to establish a master-slave relationship with the other mobile station associated with the wireless network.

46. The mobile station of claim 28 wherein the receiver is further configured to periodically receive updated allowed power setting information.

47. The mobile station of claim 46 wherein the transmitter is further configured to transmit a request for measurements regarding at least one of power settings, perceived signal-to-noise ratio (SNR), link margin values, perceived interference power, or channel busy times.

48. The mobile station of claim 28 wherein the transmitter is further configured to transmit a plurality of statistics and feedback to a controlling entity.

49. The mobile station of claim 48 wherein the plurality of statistics include at least one of current TPC setting information, mode information, bandwidth information, simultaneous channel information, or channel statistics information.