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AID Reassignment Protocol

This protocol enables the reassignment of a STA's AID for efficient channel access management in WLAN networks.

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AID Reassignment Protocol

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  1. AID Reassignment Protocol Authors: Date: 2012-03-14 Jeongki Kim, LG Electronics

  2. Authors: Jeongki Kim, LG Electronics

  3. 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 IntroductionHierarchical AID Structure and grouping [1] Jeongki Kim, LG Electronics

  4. 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 Needs for AID reassignment Jeongki Kim, LG Electronics

  5. 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 Needs for AID reassignment Jeongki Kim, LG Electronics

  6. 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 Needs for AID reassignment Jeongki Kim, LG Electronics

  7. 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 AID reassignment protocol Jeongki Kim, LG Electronics

  8. For efficient channel access management, • 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 Conclusion Jeongki Kim, LG Electronics

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

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

  11. 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? Motion Jeongki Kim, LG Electronics

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