Multi-Link Wi-Fi Backoff Control for NSTR Conflict Reduction
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Solution Overview
Problem
Current Wi-Fi technologies face challenges in managing multiple frequency band aggregation and collaboration, particularly in supporting low-latency transmission and efficient spectrum utilization in high-density communication environments, where existing mechanisms do not effectively handle non-simultaneous transmit and receive (NSTR) operations in multi-link scenarios.
Innovation Solution
A communication link control method and apparatus that implement a random backoff mechanism for multi-link devices, determining operating modes and performing target processing operations on contention windows to optimize data transmission in NSTR and simultaneous transmit and receive (STR) link pairs, thereby improving spectrum utilization and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If random backoff operation is performed in first communication link, then data transmission in second communication link can proceed, but conflict probability increases in high-density communication environments
Solution Approach 1:
The patent dynamically adjusts the contention window size based on the operating mode (NSTR or STR) and channel conditions. The contention window is not fixed but adapts to the specific scenario, allowing the system to optimize between transmission efficiency and conflict avoidance in real-time multi-link environments
Solution Approach 2:
The patent changes key parameters including contention window size, backoff counter values, and transmission power levels based on the determined operating mode. These parameter adjustments resolve the contradiction by tailoring transmission characteristics to the specific NSTR or STR scenario, reducing conflicts while maintaining productivity
2Reliability
If contention window is maintained for all scenarios, then transmission reliability improves, but energy consumption increases
Solution Approach 1:
The patent applies different contention window maintenance strategies to different communication links based on their specific operating modes. NSTR links receive different treatment compared to STR links, optimizing energy usage locally for each link while maintaining overall transmission reliability through differentiated quality of service
Solution Approach 2:
The patent performs partial contention window maintenance only when necessary based on the operating mode and channel conditions. Instead of maintaining contention windows universally, the system applies maintenance selectively to specific links or time periods, reducing unnecessary energy consumption while preserving reliability where needed
3Quantity of substance
If multi-link aggregation is implemented, then transmission bandwidth increases, but system complexity increases
Solution Approach 1:
The patent segments the multi-link system into independent link pairs, each with its own operating mode determination and contention window management. This segmentation allows complex multi-link operations to be broken down into manageable independent units, reducing overall system complexity while maintaining aggregated bandwidth benefits
Solution Approach 2:
The patent creates a universal operating mode determination mechanism that handles both NSTR and STR scenarios through a single framework. This multi-functional approach consolidates complexity into a unified system rather than requiring separate management mechanisms for different link types, simplifying the overall multi-link aggregation system
4Object-generated harmful factors
If NSTR operation mode is used, then interference between links is reduced, but transmission latency increases
Solution Approach 1:
The patent implements periodic switching between NSTR and STR modes based on channel conditions and traffic requirements. Rather than statically using NSTR mode, the system periodically evaluates and switches modes, reducing latency by utilizing STR mode when interference conditions permit while maintaining interference reduction benefits when NSTR is appropriate
Data Source
AI summary
A communication link control method, apparatus, and a storage medium for managing multiple communication links in devices supporting Non-AP Multi-Link (MLD) configurations that enhances the efficiency of wireless communication in devices with multi-link capabilities. The efficiency of the wireless communication is enhanced: identifying when a random backoff operation occurs in one communication link and then assessing the operating mode of a second, idle communication link in relation to the first. If the first link is busy and a backoff operation is required, a channel clear assessment is conducted.