Inter-AP Communication Framework for Interference Mitigation
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Solution Overview
Problem
Existing wireless communication networks face challenges in efficiently coordinating resources and reducing interference among multiple access points (APs) to enhance communication reliability and user experience, particularly in scenarios requiring ultra-high reliability (UHR) and interoperability across different vendors.
Innovation Solution
A framework for inter-AP communication is developed, enabling exchange of information and coordination of resources through mechanisms like C-TDMA, C-SR, CLI, C-BF, and C-Preemption, using containers and protocols for CAP sessions to facilitate seamless roaming and interference mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coordinated communication schemes are implemented among multiple APs, then communication reliability and resource utilization are improved, but device complexity and protocol overhead increase
Solution Approach 1:
The coordinated communication framework is segmented into distinct functional modules including discovery procedures, capability exchange mechanisms, and session management protocols. Each AP independently executes specific coordination schemes (C-TDMA, C-SR, CLI, C-BF, C-Preemption) as separate selectable components rather than a monolithic complex system, allowing selective activation based on network conditions and reducing overall operational complexity.
Solution Approach 2:
A universal inter-AP communication framework is implemented that supports multiple coordinated communication schemes through a single standardized protocol structure. The same basic framework accommodates different coordination types (time division, spatial reuse, listen intervals, beamforming, preemption) through configurable parameters and capability flags, eliminating the need for separate specialized protocols for each scheme and reducing device complexity.
2Productivity
If inter-AP coordination protocols are established, then interference mitigation and resource utilization are improved, but information exchange overhead and communication latency increase
Solution Approach 1:
APs perform discovery procedures and capability exchange in advance before actual coordinated communication begins. Capability information, supported schemes, and operational parameters are pre-negotiated and cached during initial association, allowing rapid activation of coordination mechanisms without real-time negotiation overhead during data transmission phases.
Solution Approach 2:
Once coordination parameters are established through initial information exchange, the coordinated communication schemes continue operating continuously without repeated negotiation overhead. Session management maintains established parameters and coordinates ongoing transmissions, eliminating periodic re-negotiation and reducing cumulative information exchange overhead throughout the communication session.
Data Source
AI summary
Certain aspects of the present disclosure provides an example method performable at a wireless node, which may involve obtaining a first frame that includes an indication of whether or not a second wireless node is capable of supporting one or more of a plurality of coordinated communication schemes, establishing a session with the second wireless node by an exchange of information with the second wireless node, wherein the exchange of information is regarding one or more features of at least a first coordinated communication scheme of the plurality of coordinated communication schemes that is supported by both the first wireless node and the second wireless node, and participating in the session using at least the first coordinated communication scheme, said participation being based on one or more parameters associated with the exchange of information.