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

• US 9,693,303 B2
• Filed: 04/13/2015
• Issued: 06/27/2017
• 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): Chery, Dady
• Application Number:
  US14/684,896
• Publication Number:
  US 20150223163A1
• Time in Patent Office: 806 Days
• Field of Search: 370310, 370311, 370329, 370341, 370330
• 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. A wireless 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 a plurality of groups to which the STA is assigned;

wherein the transmitter is further configured to transmit, to the AP, an acknowledgement associated with the management frame;

wherein the receiver is further configured to receive a data frame, wherein the data frame comprises a data packet and a group identifier; and

a processor configured to determine whether the group identifier received in the data frame corresponds to at least one of the plurality of assigned groups, 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 at least one of the plurality of assigned groups.

2. The STA of claim 1, wherein the transmitter is further configured to transmit traffic utilization information to the AP.

3. The STA of claim 1, wherein the transmitter is further configured to transmit power level information to the AP.

4. The STA of claim 1, wherein the transmitter is further configured to transmit a quality of service requirement to the AP.

5. The STA of claim 1, wherein the assigned group is based on a load balancing requirement.

6. A method associated with 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 a plurality of groups to which the STA is assigned;

transmitting, to the AP, an acknowledgement associated with the management frame;

receiving a data frame, wherein the data frame comprises a data packet and a group identifier;

determining whether the group identifier received in the data frame corresponds to at least one of the plurality of assigned groups; and

causing the STA to enter a power saving mode on a condition that the group identifier received in the data frame does not correspond to at least one of the plurality of assigned groups.

7. The method of claim 6, further comprising transmitting traffic utilization information to the AP.

8. The method of claim 6, further comprising transmitting power level information to the AP.

9. The method of claim 6, further comprising transmitting a quality of service requirement to the AP.

10. The method of claim 6, wherein the assigned group is based on a load balancing requirement.

11. 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 plurality of groups based on the received information;

a transmitter configured to transmit, to the STA, a management frame that includes an indication of the plurality of groups to which the STA is assigned;

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

wherein the transmitter is further configured to transmit, to the STA, a data frame including a data packet and a group identifier to enable the STA to determine whether the data packet is intended for at least one of the plurality of groups.

12. The AP of claim 11, wherein the receiver is further configured to receive traffic utilization information from each of a plurality of STAs and wherein the processor is further configured to assign the plurality of groups based on the traffic utilization information.

13. The AP of claim 11, wherein the receiver is further configured to receive power level information from each of a plurality of STAs and wherein the processor is further configured to assign the plurality of groups based on the power level information.

14. The AP of claim 11, wherein the receiver is further configured to receive a quality of service requirement from each of a plurality of groups and wherein the processor is further configured to assign the STA to the plurality of groups based on the received quality of service requirement.

15. A method associated with an access point (AP), the method comprising:

receiving information from at least one station (STA);

assigning a STA to a plurality of groups based on the received information;

transmitting, to the STA, a management frame that includes an indication of the plurality of groups to which the STA is assigned;

receiving, from the STA, an acknowledgement associated with the management frame; and

transmitting, to the STA, a data frame including a data packet and a group identifier to enable the STA to determine whether the data packet is intended for at least one of the plurality of groups.

16. The method of claim 15, further comprising receiving traffic utilization information from each of a plurality of STAs and assigning the plurality of groups based on the traffic utilization information.

17. The method of claim 15, further comprising receiving power level information from each of a plurality of STAs and assigning the plurality of groups based on the power level information.

18. The method of claim 15, further comprising receiving a quality of service requirement from each of a plurality of groups and assigning the STA to the plurality of groups based on the received quality of service requirement.