Method for transmit and receive power control in mesh systems

• US 9,301,261 B2
• Filed: 11/07/2014
• Issued: 03/29/2016
• 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:
  US14/535,986
• Publication Number:
  US 20150065190A1
• Time in Patent Office: 508 Days
• Field of Search: 713/300, 713/330, 370/318, 455/13.4, 455/522, 455/574, 455/121.1, 455/127.5
• US Class Current: 1/1
• 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 controlling transmit power in a wireless local area network (WLAN), the method comprising:

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

transmitting a signal at a transmission power based on the at least one of the plurality of operational bandwidths of the received capability information.

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

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

4. The method of claim 1 wherein the transmitting includes transmitting a probe reponse 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 transmitting includes transmitting allowed power setting information by at least one of a broadcast message, a multicast message, or a unicast message.

10. The method of claim 9 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.

11. A mobile station comprising:

a receiver configured to receive capability information from another station that includes an indicator that indicates maximum transmit power for at least one of a plurality of operational bandwidths that the another station supports; and

a transmitter configured to transmit a signal at a transmission power based on the at least one of the plurality of operational bandwidths of the received capability information.

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

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

14. The mobile station of claim 11, wherein the transmitter is further configured to transmit a probe response message based on the received capability information.

15. The mobile 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 mobile station of claim 11, wherein the transmission power step size information includes minimum transmission power information or adjustment step size settings.

17. The mobile station of claim 11, 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 mobile station of claim 11, wherein the frequency band information includes a number of simultaneously operable bands or sub-bands.

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

20. The mobile 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.