Method for transmit and receive power control in mesh systems

• US 9,693,354 B2
• Filed: 03/14/2016
• Issued: 06/27/2017
• 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:
  US15/069,020
• Publication Number:
  US 20160198476A1
• Time in Patent Office: 470 Days
• Field of Search: 713300, 713330, 370318
• 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 power in a wireless local area network (WLAN). A station may transmit capability information to another station and may include an indicator that indicates a maximum transmission power for an operational bandwidth that the station supports. The station may receive a signal that has a transmission power based on at least one of the operational bandwidths of the transmitted capability information.

Claims

1. A method for controlling transmit power in a wireless local area network (WLAN), the method comprising:

transmitting capability information from a station that indicates a maximum transmission power for at least one of a plurality of operational bandwidths that the station supports; and

receiving a signal, in one of the plurality of operational bandwidths that the station supports, having a transmission power based on the at least one of the plurality of operational bandwidths of the transmitted capability information.

2. The method of claim 1 wherein the transmitting includes at least one of transmitting via a broadcast message, a multicast message, or a unicast message.

3. The method of claim 1 wherein the capability information is transmitted in a probe request message.

4. The method of claim 1 wherein the receiving includes receiving a probe response message.

5. 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.

6. The method of claim 5, wherein the transmission power step size information includes minimum transmission power information or adjustment step size settings.

7. The method of claim 5, 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.

8. The method of claim 5, wherein the frequency band information includes a number of simultaneously operable bands or sub-bands.

9. The method of claim 1 wherein the receiving includes receiving allowed power setting information in at least one of a broadcast message, a multicast message, or a unicast message.

10. The method of claim 9 wherein 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.

11. A station comprising:

a transmitter configured to transmit capability information to another station that indicates a maximum transmit power for at least one of a plurality of operational bandwidths that the another station supports; and

a receiver configured to receive a signal, in one of the plurality of operational bandwidths that the station supports, having a transmission power based on the at least one of the plurality of operational bandwidths of the transmitted capability information.

12. The station of claim 11, wherein the transmitter is further configured to transmit capability information by at least one of a broadcast message, a multicast message, or a unicast message.

13. The station of claim 11, wherein the transmitter is further configured to transmitter capability information in a probe request message.

14. The station of claim 11, wherein the receiver is further configured to receive a probe response message based on the transmitted capability information.

15. The station of claim 11, 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.

16. The station of claim 15, wherein the transmission power step size information includes minimum transmission power information or adjustment step size settings.

17. The station of claim 15, 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.

18. The station of claim 15, wherein the frequency band information includes a number of simultaneously operable bands or sub-bands.

19. The station of claim 11 wherein the receiver is further configured to receive allowed power setting information in at least one of a broadcast message, a multicast message, or a unicast message.

20. The station of claim 11 wherein 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.