1. AID Reassignment Protocol
Month Year
doc.: IEEE yy/xxxxr0
March 2012
AID Reassignment Protocol
Date:
Authors:
Jeongki Kim, LG Electronics
John Doe, Some Company

2. Authors: March 2012 Month Year doc.: IEEE 802.11-yy/xxxxr0
Jeongki Kim, LG Electronics
John Doe, Some Company

3. Introduction Hierarchical AID Structure and grouping [1]
March 2012
Introduction Hierarchical AID Structure and grouping [1]
Based on hierarchical traffic bitmap, the STAs can be grouped into AID groups/pages
STAs supporting different use cases can be easily grouped into different Pages
E.g.,)Sensor stations (infrequent traffics)  Page 1, Offloading stations (frequent traffics)  Page 2
Jeongki Kim, LG Electronics

4. Needs for AID reassignment
March 2012
Needs for AID reassignment
For efficient channel access management, AP can change the page/group of a STA into another group
Saturation of traffic density of a page/group
Change of a STA’s traffic characteristic
That is, a STA’s AID can be re-assignment for channel access management
Jeongki Kim, LG Electronics

5. Needs for AID reassignment
March 2012
Needs for AID reassignment
Saturation of traffic density of a page/group
Different classes of STAs can be grouped into different pages/groups
e.g.,) Sensor STAs in Page/Group 1(low duty cycle) and Offloading STAs in Page/Group 2 (high duty cycle)
STAs in the same class may be grouped to different groups for load distribution of a group
e.g., Group 2/Group 3 for offloading STAs
In real environment the traffic density of a group may be larger than that of other groups
For load distribution of each group, AP may change the group of a STA
Jeongki Kim, LG Electronics

6. Needs for AID reassignment
March 2012
Needs for AID reassignment
Change of the STA’s traffic characteristic
The traffic characteristic of a STA may be changed
E.g., when emergency traffic happens
In case of the change of the STA’s traffic characteristic, a STA may request the change of AID group to AP (e.g., Low duty cycle (LDT) high duty cycle(HDT))
AP can re-assign the STA’s AID in response to the request of a STA or by unsolicited method
Jeongki Kim, LG Electronics

7. AID reassignment protocol
March 2012
AID reassignment protocol
To assign AID dynamically,
AP can re-assign a STA’s AID with management frame for channel access management
STA can request to change its AID for channel access management
i.e.,) Will move to another AID group
AID assignment request frame
STA sends AID assignment request to AP
To query re-assigning its AID
The details of the request frame are TBD
AID assignment response frame
AP sends AID assignment response to STA
To announce re-assigned AID
The details of the response frame are TBD
Jeongki Kim, LG Electronics

8. Conclusion For efficient channel access management, March 2012
An AP should be able to re-assign a STA’s AID
A STA may request the re-assignment of the STA’s AID to an AP associated with the STA
Jeongki Kim, LG Electronics

9. March 2012
Straw Poll
Do you support that a STA’s AID can be re-assigned for channel access management?
Jeongki Kim, LG Electronics

10. Reference [1] 12/0388r0, “TGah Efficient TIM Encoding” March 2012
Jeongki Kim, LG Electronics

11. March 2012
Motion
Do you support to include in the spec framework, in section 4.3, a STA’s AID can be re-assigned for channel access management?
Jeongki Kim, LG Electronics