Method and apparatus for efficient addressing and power savings in wireless communications

• US 9,042,290 B2
• Filed: 01/23/2014
• Issued: 05/26/2015
• Est. Priority Date: 04/25/2005
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Sammour, Mohammed, Grandhi, Sudheer A., Chandra, Arty
• Primary Examiner(s): WASHINGTON, ERIKA ALISE
• Application Number:
  US14/162,251
• Publication Number:
  US 20140133380A1
• Time in Patent Office: 488 Days
• Field of Search: None
• US Class Current: 370/311
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 8/186 Processing of subscriber group data
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method and apparatus may be used for assigning groups of stations in wireless communications to one or more groups. Groups may be assigned by an access point (AP) based on information received from a station (STA). Group information may be signaled to each station and a group identifier may be indicated in a frame. The group information may be applied to a performance enhancement, for example power savings for the station, wherein the station enters a power saving mode on a condition that the station determines that it is not a member of the group.

Claims

1. An access point (AP) comprising:

a receiver configured to receive information from at least one station (STA);

a processor configured to assign a STA to a group based on the received information;

a transmitter configured to transmit, to the STA, a management frame that includes an indication of the assigned group;

wherein the receiver is further configured to receive, from the STA, an acknowledgement associated with the assigned group; and

wherein the transmitter is further configured to transmit a physical (PHY) protocol data unit (PPDU) to the STA, wherein the PPDU comprises a data frame including a data packet and a group identifier to enable the STA to determine whether the data packet is intended for the assigned group.

2. The AP of claim 1, wherein the receiver is further configured to receive traffic utilization information of each one of a plurality of STAs and the processor is further configured to assign at least one of a plurality of groups based on the traffic utilization information.

3. The AP of claim 1, wherein the receiver is further configured to receive power level information of each one of a plurality of STAs and the processor is further configured to assign at least one of a plurality of groups based on the power level information.

4. The AP of claim 1, wherein the processor is further configured to assign the STA to more than one group.

5. The AP of claim 1, wherein the receiver is further configured to receive a quality of service requirement of each one of a plurality of groups and wherein the processor is further configured to assign the STA to the group based on the received quality of service requirement.

6. The AP of claim 1, wherein the processor is further configured to assign the STA to the group based on a load balancing requirement.

7. A method for use in an access point (AP), the method comprising:

receiving information from at least one station (STA);

assigning a STA to at least one group of a plurality of groups based on the received information;

transmitting, to the STA, a management frame that includes an indication of the assigned at least one group;

receiving, from the STA, an acknowledgement associated with the assigned at least one group; and

transmitting a physical (PHY) protocol data unit (PPDU) to the STA, wherein the PPDU comprises a data frame, and wherein the data frame includes a data packet and a group identifier, and wherein the group identifier enables the STA to determine whether the data packet is intended for the assigned at least one group associated with the STA.

8. The method of claim 7, wherein the received information includes traffic utilization information.

9. The method of claim 7, wherein the received information includes power level information.

10. The method of claim 7, wherein the STA is assigned to more than one group.

11. The method of claim 7, wherein the received information includes a quality of service requirement.

12. The method of claim 7, wherein the at least one assigned group is based on a load balancing requirement.

13. A station (STA) comprising:

a transmitter configured to transmit information to an access point (AP);

a receiver configured to receive, from the AP, a management frame that includes an indication of an assigned group;

wherein the transmitter is further configured to transmit, to the AP, an acknowledgement associated with the assigned group;

wherein the receiver is further configured to receive a physical (PHY) protocol data unit (PPDU), wherein the PPDU comprises a data frame including a data packet and a group identifier; and

a processor configured to determine whether the group identifier received in the data frame corresponds to the assigned group, and wherein the processor is further configured to cause the STA to enter a power saving mode on a condition that the group identifier received in the data frame does not correspond to the assigned group.

14. The STA of claim 13, wherein the transmitter is further configured to transmit traffic utilization information to the AP.

15. The STA of claim 13, wherein the transmitter is further configured to transmit power level information to the AP.

16. The STA of claim 13, wherein the indication of the assigned group indicates that the STA is assigned to more than one group.

17. The STA of claim 13, wherein the transmitter is further configured to transmit a quality of service requirement to the AP.

18. The STA of claim 13, wherein the assigned group is based on a load balancing requirement.

19. A method for use in a station (STA), the method comprising:

transmitting information to an access point (AP);

receiving, from the AP, a management frame that includes an indication of an assigned group;

transmitting, to the AP, an acknowledgement associated with the assigned group;

receiving a physical (PHY) protocol data unit (PPDU), wherein the PPDU comprises a data frame including a data packet and a group identifier;

determining whether the group identifier received in the data frame corresponds to the assigned group; and

entering a power saving mode on a condition that the group identifier received in the data frame does not correspond to the assigned group.

20. The method of claim 19, wherein the transmitted information is traffic utilization information.

21. The method of claim 19, wherein the transmitted information is power level information.

22. The method of claim 19, wherein the indication of the assigned group indicates that the STA is assigned to more than one group.

23. The method of claim 19, wherein the transmitted information is a quality of service requirement.

24. The method of claim 19, wherein the assigned group is based on a load balancing requirement.