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

• US 10,681,631 B2
• Filed: 02/11/2019
• Issued: 06/09/2020
• 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:
  US16/272,727
• Publication Number:
  US 20190174407A1
• Time in Patent Office: 484 Days
• 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 receiver configured to receive, from an access point (AP), a management frame that includes an indication of at least one group to which the STA is assigned;

the receiver configured to receive a frame from the AP, wherein the frame comprises a physical layer (PHY) header and a data packet, wherein the PHY header includes an indication of a group identifier; and

a processor configured to determine whether the group identifier indicated in the PHY header of the frame corresponds to the group to which the STA is assigned indicated in the management frame;

the processor configured to enter a power saving mode on a condition that the group identifier indicated in the PHY header of the frame does not correspond to the group to which the STA is assigned indicated in the management frame.

2. The STA of claim 1, further comprising:

a transmitter configured to transmit an indication of power save capabilities to the AP.

3. The STA of claim 1, further comprising:

a transmitter configured to transmit power level information to the AP.

4. The STA of claim 1, further comprising:

a transmitter configured to transmit a quality of service (QoS) requirement to the AP.

5. The STA of claim 1, wherein the at least one group to which the STA is assigned is based on a load balancing algorithm of the AP.

6. The STA of claim 1, wherein the indication of the group identifier included in the PHY header of the frame is included in an HT-SIG field of the PHY header.

7. The STA of claim 1, wherein the receiver is configured to receive, from the AP, another management frame indicating to the STA that the STA has been reassigned to at least one group.

8. The STA of claim 1, wherein the indication of at least one group to which the STA is assigned included in the management frame comprises a value suitable for assigning the STA to a plurality of groups.

9. The STA of claim 1, wherein the management frame includes an indication of a plurality of groups to which the STA is assigned.

10. A method performed by a station (STA), the method comprising:

receiving, from an access point (AP), a management frame that includes an indication of at least one group to which the STA is assigned;

receiving a frame from the AP, wherein the frame comprises a physical layer (PHY) header and a data packet, wherein the PHY header includes an indication of a group identifier;

determining whether the group identifier indicated in the PHY header of the frame corresponds to the group to which the STA is assigned indicated in the management frame; and

entering a power saving mode on a condition that the group identifier indicated in the PHY header of the frame does not correspond to the group to which the STA is assigned indicated in the management frame.

11. The method of claim 10, further comprising:

transmitting an indication of power save capabilities to the AP.

12. The method of claim 10, further comprising:

transmitting power level information to the AP.

13. The method of claim 10, further comprising:

transmitting a quality of service (QoS) requirement to the AP.

14. The method of claim 10, wherein the at least one group to which the STA is assigned is based on a load balancing algorithm of the AP.

15. The method of claim 10, wherein the indication of the group identifier included in the PHY header of the frame is included in an HT-SIG field of the PHY header.

16. The method of claim 10, further comprising:

receiving, from the AP, another management frame indicating to the STA that the STA has been reassigned to at least one group.

17. The method of claim 10, wherein the indication of at least one group to which the STA is assigned included in the management frame comprises a value suitable for assigning the STA to a plurality of groups.

18. The method of claim 10, wherein the management frame includes an indication of a plurality of groups to which the STA is assigned.