Multi-Link P2P Coordination Under NSTR Wireless Constraints
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Solution Overview
Problem
Multi-link devices (MLDs) with non-simultaneous transmit and receive (NSTR) restrictions face performance degradation during peer-to-peer (P2P) transmission due to simultaneous link operation, leading to inefficiencies and energy consumption issues.
Innovation Solution
A wireless communication method where a first non-AP MLD indicates a second non-AP MLD for P2P transmission to an AP MLD, enabling better resource management and scheduling to avoid interference and conflicts, thereby improving channel utilization and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple links are operated simultaneously in an MLD, then channel utilization is improved, but NSTR restrictions cause interference and performance degradation
Solution Approach 1:
The patent applies preliminary action by having the first non-AP MLD indicate the second non-AP MLD to the AP MLD before P2P transmission occurs. This advance notification enables the AP MLD to pre-coordinate link resources and identify potential NSTR conflicts before they arise, allowing proactive scheduling decisions that prevent interference while maintaining high channel utilization.
Solution Approach 2:
The AP MLD serves as an intermediary between the first and second non-AP MLDs. It receives indications from the first MLD, identifies suitable second MLDs for P2P transmission, and coordinates link resource allocation. This intermediary role enables centralized management of multi-link operations, resolving NSTR conflicts through coordinated scheduling rather than direct peer-to-peer negotiation.
2Ease of operation
If P2P transmission is performed without AP assistance, then device autonomy is improved, but transmission efficiency deteriorates due to uncoordinated link usage
Solution Approach 1:
The first non-AP MLD autonomously identifies and indicates suitable second non-AP MLDs for P2P transmission to the AP MLD. This self-service approach maintains device autonomy by allowing the MLD to make its own transmission decisions while still benefiting from AP-coordinated resource management. The MLD serves itself by selecting partners and initiating transmissions without requiring full AP mediation.
Solution Approach 2:
The autonomous MLD performs preliminary actions by identifying and indicating the second MLD to the AP before transmission begins. This advance indication allows the AP to prepare link resource allocations and coordinate scheduling, improving transmission efficiency while preserving the initiating MLD's autonomy in partner selection and transmission initiation.
3Adaptability or versatility
If link resources are not managed centrally, then device flexibility is improved, but invalid transmissions increase due to uncoordinated access
Solution Approach 1:
The AP MLD acts as a central coordinator that receives link resource management information from non-AP MLDs. It maintains an overview of all link allocations and coordinates transmissions across the network, preventing invalid transmissions by ensuring that scheduled P2P communications do not conflict with existing link reservations. This centralized management reduces energy waste while preserving device flexibility in partner selection.
Data Source
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AI summary
A wireless communication method, and a device, which facilitate an improvement in the performance of peer to peer (P2P) transmission. The method comprises: a first non-access point (Non-AP) multi-link device (MLD) sending first indication information to an AP MLD, wherein the first indication information is used for indicating a second Non-AP MLD, and the second Non-AP MLD is a Non-AP MLD, which is about to perform P2P transmission with the first Non-AP MLD.