Mobile AP MLD Uplink Synchronous Transmission Coordination
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Solution Overview
Problem
The mobile AP MLD in the 802.11be standard faces challenges in achieving multilink gain due to its non-simultaneous transmission and receiving capabilities, leading to difficulties in obtaining multilink performance improvements.
Innovation Solution
A method and device that trigger uplink synchronous transmission between multiple independent non-APs by sharing transmission opportunities and indicating the length of uplink physical layer protocol data units on both primary and non-primary links, relaxing access restrictions and improving the success rate of synchronous uplink transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the mobile AP MLD performs non-simultaneous transmission and receiving, then the device can operate with simpler hardware architecture, but the multilink performance is degraded
Solution Approach 1:
The patent applies preliminary action by having the mobile AP MLD send trigger frames in advance to non-AP STAs, specifying the timing and duration of uplink transmissions. This allows the AP to coordinate multiple uplink transmissions before they occur, enabling simultaneous multilink operation without requiring complex simultaneous transmit-receive hardware architecture.
2Productivity
If the mobile AP MLD triggers uplink synchronous transmission on multiple links, then the multilink gain is improved, but the access restriction and transmission conflict increase
Solution Approach 1:
The patent applies local quality by treating different links (primary and non-primary) with different access characteristics. The trigger frame mechanism allows the mobile AP to selectively manage uplink transmissions on specific links based on their individual requirements, enabling multilink gain while maintaining manageable access restrictions through localized control rather than uniform constraints.
3Productivity
If the transmission opportunity is shared among multiple non-AP STAs, then the throughput is improved, but the transmission conflict and collision probability increase
Solution Approach 1:
The patent applies feedback by implementing a trigger frame mechanism where the mobile AP receives status information from non-AP STAs about their transmission readiness and sends back coordinated transmission instructions. This feedback loop allows the AP to manage multiple STAs' transmission opportunities dynamically, improving throughput while reducing conflicts through informed coordination rather than blind simultaneous access.
Data Source
AI summary
Provided in the embodiments of the present application are a wireless communication method and device. For NSTR characteristics of a mobile AP MLD, it is designed that uplink simultaneous transmission between a plurality of independent non-access-point devices is triggered in a mobile AP MLD scenario. By means of the embodiments of the present application, an uplink access restriction is relaxed, and under the condition of not affecting the transmission quality of a single-link device on a main link, the success rate of uplink simultaneous transmission between mobile AP MLDs is increased, and a transmission service having a high throughput is also provided.