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

• US 20130336245A1
• Filed: 06/06/2013
• Published: 12/19/2013
• Est. Priority Date: 06/17/2012
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Fischer, Matthew James
• Granted Patent: US 9,179,502 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• 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 generate a plurality of beacons having a plurality of restricted access window (RAW) information elements (IEs) that specify a plurality of RAWs for a plurality of wireless communication device groups to communicate with the wireless communication device; and

a communication interface configured to;

transmit the plurality of beacons to a plurality of wireless communication devices; and

support first communications with a first wireless communication device group during first RAWs having a first delivery traffic indication message (DTIM) periodicity; and

support second communications with a second wireless communication device group during second RAWs having a second DTIM periodicity.

2. The wireless communication device of claim 1, wherein the communication interface is further configured to support the first communications and the second communications during the first RAWs and the second RAWs, respectively, with at least one common wireless communication device included in both the first wireless communication device group and the second wireless communication device group.

3. The wireless communication device of claim 1, wherein the processor is further configured to generate the plurality of beacons such that:

a first beacon includes a first RAW IE that specifies a first RAW for the first wireless communication device group; and

a second beacon includes a second RAW IE that specifies a second RAW for the second wireless communication device group.

4. The wireless communication device of claim 1, wherein the processor is further configured to generate the plurality of beacons such that:

a first beacon includes a first RAW IE that specifies a first RAW for a first wireless communication device group; and

a second beacon includes a second RAW IE that specifies a second RAW for a second wireless communication device group and a third RAW for a third or the first wireless communication device group.

5. The wireless communication device of claim 1, wherein the first DTIM periodicity is a base DTIM periodicity and the second DTIM periodicity is an integer multiple of the base DTIM periodicity.

6. The wireless communication device of claim 1, wherein the communication interface is further configured to support third communications with a third wireless communication device group during third RAWs having a third DTIM periodicity;

the first DTIM periodicity is a base DTIM periodicity;

the second DTIM periodicity is a first integer multiple of the base DTIM periodicity; and

the third DTIM periodicity is a second integer multiple of the base DTIM periodicity.

7. The wireless communication device of claim 1, wherein the processor is further configured to generate the plurality of beacons such that one beacon includes a RAW IE that specifies two or more RAWs within one beacon interval for one wireless communication device group.

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

the wireless communication device including an access point (AP); and

the plurality of wireless communication devices including one of a wireless station (STA) and a smart meter station (SMSTA).

9. A wireless communication device comprising:

a processor configured to generate a plurality of beacons having a plurality of restricted access window (RAW) information elements (IEs) that specify a plurality of RAWs for a plurality of smart meter station (SMSTA) groups to communicate with the wireless communication device; and

a communication interface configured to;

transmit the plurality of beacons to a plurality of SMSTAs; and

support first communications with a first SMSTA group during first RAWs having a first delivery traffic indication message (DTIM) periodicity; and

support second communications with a second SMSTA group during second RAWs having a second DTIM periodicity that is an integer multiple of the first DTIM periodicity.

10. The wireless communication device of claim 9, wherein the communication interface is further configured to support the first communications and the second communications during the first RAWs and the second RAWs, respectively, with at least one common SMSTA included in both the first SMSTA group and the second SMSTA group.

11. The wireless communication device of claim 9, wherein the processor is further configured to generate the plurality of beacons such that:

a first beacon includes a first RAW IE that specifies a first RAW for the first SMSTA group; and

a second beacon includes a second RAW IE that specifies a second RAW for the second SMSTA group and a third RAW for a third or the first SMSTA group.

12. The wireless communication device of claim 9, wherein the communication interface is further configured to support third communications with a third SMSTA group during third RAWs having a third DTIM periodicity;

the first DTIM periodicity is a base DTIM periodicity;

the second DTIM periodicity is a first integer multiple of the base DTIM periodicity; and

the third DTIM periodicity is a second integer multiple of the base DTIM periodicity.

13. The wireless communication device of claim 9, wherein the processor is further configured to generate the plurality of beacons such that one beacon includes a RAW IE that specifies two or more RAWs within one beacon interval for one SMSTA group.

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

generating a plurality of beacons having a plurality of restricted access window (RAW) information elements (IEs) that specify a plurality of RAWs for a plurality of wireless communication device groups to communicate with the wireless communication device; and

operating a communication interface for;

transmitting the plurality of beacons to a plurality of wireless communication devices; and

supporting first communications with a first wireless communication device group during first RAWs having a first delivery traffic indication message (DTIM) periodicity; and

supporting second communications with a second wireless communication device group during second RAWs having a second DTIM periodicity.

15. The method of claim 14 further comprising:

operating the communication interface for supporting the first communications and the second communications during the first RAWs and the second RAWs, respectively, with at least one common wireless communication device included in both the first wireless communication device group and the second wireless communication device group.

16. The method of claim 14, further comprising generating the plurality of beacons such that:

a first beacon includes a first RAW IE that specifies a first RAW for the first wireless communication device group; and

a second beacon includes a second RAW IE that specifies a second RAW for the second wireless communication device group and a third RAW for a third or the first wireless communication device group.

17. The method of claim 14, wherein the first DTIM periodicity is a base DTIM periodicity and the second DTIM periodicity is an integer multiple of the base DTIM periodicity.

18. The method of claim 14 further comprising:

operating a communication interface for supporting third communications with a third wireless communication device group during third RAWs having a third DTIM periodicity;

the first DTIM periodicity is a base DTIM periodicity;

the second DTIM periodicity is a first integer multiple of the base DTIM periodicity; and

the third DTIM periodicity is a second integer multiple of the base DTIM periodicity.

19. The method of claim 14, further comprising generating the plurality of beacons such that one beacon includes a RAW IE that specifies two or more RAWs within one beacon interval for one wireless communication device group.

20. The method of claim 14, wherein the wireless communication device including an access point (AP);

and

the plurality of wireless communication devices including one of a wireless station (STA) and a smart meter station (SMSTA).