Multiple delivery traffic indication map (DTIM) per device within single user, multiple user, multiple access, and/or MIMO wireless communications

• US 9,807,793 B2
• Filed: 10/30/2015
• Issued: 10/31/2017
• Est. Priority Date: 06/17/2012
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Fischer, Matthew James
• Primary Examiner(s): Elliott, IV, Benjamin H
• Application Number:
  US14/927,727
• Publication Number:
  US 20160050689A1
• Time in Patent Office: 732 Days
• CPC Class Codes: H04B 7/0689 using different transmission schemes, at least one of them being a diversity transmission scheme
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

Communications are coordinated between different respective wireless communication device groups in a multiple delivery traffic indication map (DTIM) per device signaling scheme. Different respective wireless communication devices (e.g., wireless stations (STAs)) may communicate with a manager/coordinator wireless communication device (e.g., access point (AP)) at different times and for different reasons. The manager/coordinator wireless communication device generates and transmits beacons to the wireless communication devices specifying times during which communications may be supported with the manager/coordinator wireless communication device. A restricted access window (RAW) information element (IE) within a beacon includes at least one restricted access window (RAW) to specify a wireless communication device authorized to communicate with the manager/coordinator wireless communication device. Different wireless communication device groups may communicate with the manager/coordinator wireless communication device at different periodicities, and any one wireless communication device may be included in more than one wireless communication device group.

Claims

1. A wireless communication device comprising:

a processor configured to;

receive a plurality of frames from another wireless communication device;

identify a plurality of restricted access windows (RAWs) specified within the plurality of frames;

process the plurality of RAWs to determine whether the plurality of RAWs specify that the wireless communication device is included within at least one group of a plurality of wireless communication device groups to communicate with the another wireless communication device; and

support communications with the another wireless communication device during a subset of RAWs within the plurality of RAWs having a delivery traffic indication message (DTIM) periodicity when there is a determination that the wireless communication device is included within the at least one group of the plurality of wireless communication device groups to communicate with the another wireless communication device.

2. The wireless communication device of claim 1, wherein the processor is further configured to:

process the plurality of RAWs to determine whether the plurality of RAWs specify that the wireless communication device is included within at least one additional group of the plurality of wireless communication device groups to communicate with the another wireless communication device; and

support communications with the another wireless communication device during another subset of RAWs within the plurality of RAWs having another DTIM periodicity when there is the determination that the wireless communication device is included within the at least one additional group of the plurality of wireless communication device groups to communicate with the another wireless communication device.

3. The wireless communication device of claim 2, wherein the DTIM periodicity is a base DTIM periodicity, and the another DTIM periodicity is a positive integer multiple of the base DTIM periodicity.

4. The wireless communication device of claim 1, wherein the processor is further configured to:

identify a plurality of restricted access window (RAW) information elements (IEs) within the plurality of frames; and

process the plurality of RAW IEs to determine the plurality of RAWs.

5. The wireless communication device of claim 1, wherein the processor is further configured to:

process a first frame of the plurality of frames to identify a first RAW information element (IE) that specifies a first RAW of the plurality of RAWs for a first group of a plurality of wireless communication device groups; and

process a second frame of the plurality of frames to identify a second RAW IE that specifies a second RAW of the plurality of RAWs for a second group of the plurality of wireless communication device groups.

6. The wireless communication device of claim 1, wherein the processor is further configured to:

receive a plurality of frames from the another wireless communication device, wherein the plurality of frames includes a plurality of beacons; and

process the plurality of beacons to identify the plurality of RAWs.

7. The wireless communication device of claim 1 further comprising:

a wireless station (STA), wherein the another wireless communication device includes an access point (AP), another STA, or a smart meter station (SMSTA).

8. The wireless communication device of claim 1 further comprising:

a smart meter station (SMSTA), wherein the another wireless communication device includes an access point (AP), another SMSTA, or a wireless station (STA).

9. A wireless communication device comprising:

a processor configured to;

receive a plurality of beacons from another wireless communication device;

identify a plurality of restricted access windows (RAWs) specified within the plurality of beacons;

process the plurality of RAWs to determine whether the plurality of RAWs specify that the wireless communication device is included within at least one of a first group or a second group of a plurality of wireless communication device groups to communicate with the another wireless communication device;

support communications with the another wireless communication device during a first subset of RAWs within the plurality of RAWs having a first delivery traffic indication message (DTIM) periodicity when there is a first determination that the wireless communication device is included within the first group of the plurality of wireless communication device groups to communicate with the another wireless communication device; and

support communications with the another wireless communication device during a second subset of RAWs within the plurality of RAWs having a second DTIM periodicity there is a second determination that the wireless communication device is included within the second group of the plurality of wireless communication device groups to communicate with the another wireless communication device.

10. The wireless communication device of claim 9, wherein the first DTIM periodicity is a base DTIM periodicity, and the second DTIM periodicity is a positive integer multiple of the base DTIM periodicity.

11. The wireless communication device of claim 9, wherein the processor is further configured to:

process a first beacon of the plurality of beacons to identify a first RAW information element (IE) that specifies a first RAW of the plurality of RAWs for the first group of a plurality of wireless communication device groups; and

process a second beacon of the plurality of beacons to identify a second RAW IE that specifies a second RAW of the plurality of RAWs for the second group of the plurality of wireless communication device groups.

12. The wireless communication device of claim 9 further comprising:

a wireless station (STA), wherein the another wireless communication device includes an access point (AP), another STA, or a smart meter station (SMSTA).

13. The wireless communication device of claim 9 further comprising:

a smart meter station (SMSTA), wherein the another wireless communication device includes an access point (AP), another SMSTA, or a wireless station (STA).

14. A method for execution by a wireless communication device, the method comprising:

receiving, via a communication interface of the wireless communication device, a plurality of frames from another wireless communication device;

identifying a plurality of restricted access windows (RAWs) specified within the plurality of frames;

processing the plurality of RAWs to determine whether the plurality of RAWs specify that the wireless communication device is included within at least one group of a plurality of wireless communication device groups to communicate with the another wireless communication device; and

supporting communications with the another wireless communication device during a subset of RAWs within the plurality of RAWs having a delivery traffic indication message (DTIM) periodicity when there is a determination that the wireless communication device is included within the at least one group of the plurality of wireless communication device groups to communicate with the another wireless communication device.

15. The method of claim 14 further comprising:

processing the plurality of RAWs to determine whether the plurality of RAWs specify that the wireless communication device is included within at least one additional group of the plurality of wireless communication device groups to communicate with the another wireless communication device; and

supporting communications with the another wireless communication device during another subset of RAWs within the plurality of RAWs having another DTIM periodicity when there is the determination that the wireless communication device is included within the at least one additional group of the plurality of wireless communication device groups to communicate with the another wireless communication device.

16. The method of claim 15, wherein the DTIM periodicity is a base DTIM periodicity, and the another DTIM periodicity is a positive integer multiple of the base DTIM periodicity.

17. The method of claim 14 further comprising:

identifying a plurality of restricted access window (RAW) information elements (IEs) within the plurality of frames; and

processing the plurality of RAW IEs to determine the plurality of RAWs.

18. The method of claim 14 further comprising:

processing a first frame of the plurality of frames to identify a first RAW information element (IE) that specifies a first RAW of the plurality of RAWs for a first group of a plurality of wireless communication device groups; and

processing a second frame of the plurality of frames to identify a second RAW IE that specifies a second RAW of the plurality of RAWs for a second group of the plurality of wireless communication device groups.

19. The method of claim 14 further comprising:

receiving a plurality of frames from the another wireless communication device, wherein the plurality of frames includes a plurality of beacons; and

processing the plurality of beacons to identify the plurality of RAWs.

20. The method of claim 14, wherein the wireless communication device is a wireless station (STA), wherein the another wireless communication device includes an access point (AP), another STA, or a smart meter station (SMSTA).