Proposal for Dynamic Multi-AP Coordination in IEEE 802.11-23

This proposal focuses on enhancing the reliability of multi-AP coordination in IEEE 802.11-23 through the formation and management of MAP (Multi-AP) groups. It discusses the limitations of the current setup and suggests a dynamic approach where multiple APs can form MAP groups flexibly. The document details the MAP group setup procedure, including the negotiation process, group ownership assignment, and frame exchange mechanisms. Additionally, it outlines the MAP group discovery and joining/leaving procedures to facilitate efficient communication and coordination among APs.

• Multi-AP Coordination
• IEEE 802.11-23
• MAP Group
• Dynamic Setup
• Reliability

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1. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 MAP group set-up operation discussion Name Jay Yang Affiliations Address Phone email Yang.zhijie@zte.com.cn ZTE YanLi Yun Li Qisheng Huang Submission Jay Yang al. (ZTE)

2. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 Background UHR PAR intends to improve the Reliability via multi-AP coordination scheme A batch of multi-AP coordination features have been discussed in UHR group Reference [2] and [3] propose to have a candidate AP group where the APs participate MAP coordination scheme. Reference [4] indicates that any AP in the MAP group can be shared or sharing AP in different coordination time slot. In some of MAP coordination proposals, like C-OFDMA, MAP sounding, AP ID should be defined to identify each shared AP(may including sharing AP) in Trigger frame, NDPA frame. Submission Slide 2 Jay Yang, et al. (ZTE)

3. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 Limitation & Motivation Limitation It will be more flexible if multi APs can form an MAP group dynamically. The master AP(AP1) in MAP group may can t exchange frame with a far away AP(AP2) that intends to join a current AP group.e.g. AP1 need to allocate AP-ID to the new member. In this contribution, we propose more discussion on the MAP group set-up procedure MAP group information shall be broadcast in a MGMT. frame, so that a new AP can discover and join an existed MAP group. Some notification procedure should be defined for which one AP in the MAP group can leave/join a MAP group One AP may relay other two APs information exchange if they are hidden node/BSS in a MAP group Submission Slide 3 Jay Yang, et al. (ZTE)

4. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 MAP group set-up procedure Two or more APs form a MAP group via a negotiation procedure: One AP becomes the group owner(AP-GO) for assigning, maintaining and recycling AP ID. AP-GO may maintain group key, group identifier,etc. Other APs in the same group are called group client(AP-GC). AP-GO/GC can invite a 3rd AP to join an existed MAP group via a MGMT. frame AP-GC may relay the frame exchange between AP-GO and new joined AP if they are hidden nodes. Submission Slide 4 Jay Yang, et al. (ZTE)

5. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 MAP group discovery procedure Each AP in an MAP group should broadcast the group identifier in Beacon or other MGMT. frame Each AP may broadcast neighbour AP s group identifier in RNR,ML,MBSSID etc. A new AP may discover an existed MAP group after receiving the Beacon or via other MGMT. frame. Submission Slide 5 Jay Yang, et al. (ZTE)

6. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 Join and leave an existed MAP group A new AP may request to join an existed MAP group via a MGMT. frame exchange with an AP-GO or AP-GC AP-GO will recycle the AP ID if one AP-GC leaves the AP group AP-GO may broadcast AP ID assignment(AP ID mapping to AP MAC address) to all AP-GCs if an AP join or leave the current group The AP group should be torn down if AP-GO leaves the current AP group AP-GO may broadcast AP group torn down message to all AP-GCs Submission Slide 6 Jay Yang, et al. (ZTE)

7. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 One AP may participate in different MAP groups MAP may form different AP groups based on certain capability or features. One AP in the MAP overlap area may join the different MAP groups if it meets their requirements. The AP in multiple MAP groups should broadcast all the MAP group s information Submission Slide 7 Jay Yang, et al. (ZTE)

8. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 Summary This contribution discusses the following procedures in MAP set-up scheme. MAP group discovery Join or leave one or more existed MAP groups AP ID granted and recycle procedure AP-GO and AP-GC role in an MAP group Relay hidden node information in an MAP group Submission Slide 8 Jay Yang, et al. (ZTE)

9. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 THANK YOU Submission

10. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 reference [1] 11-23-0480-00-uhr-uhr-proposed-par.pdf [2] 11-23-1461-01- Considerations on Multi-AP Operation [3]11-23-Proposed Amendments for Multi-AP Coordination Language in EHT SFD [4] 11-23-1066-M-AP Coordination Agreement follow up Submission Slide 10 Jay Yang, et al. (ZTE)

11. Nov. 2023 Doc.: IEEE 802.11-23/1837r1 Straw Poll #1 Do you support to consider to define the MAP group discovery, set-up, tear- down procedure? Submission Slide 11 Jay Yang, et al. (ZTE)