MLO Link Selection for SAR Compliance
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Solution Overview
Problem
Current wireless LAN technologies face challenges in efficiently managing multi-link operations (MLO) and time-averaged specific absorption rate (SAR) backoff regulation to optimize data throughput while adhering to electromagnetic wave absorption regulations.
Innovation Solution
An electronic device is designed with wireless communication circuitry, memory, and processors that execute computer programs to verify TAS backoff regulation values, determine optimal link combinations for MLO, and perform TID-to-link mapping negotiations to maximize total data throughput while ensuring compliance with SAR regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple links are used in MLO to increase data throughput, then productivity is improved, but electromagnetic wave absorption increases causing SAR regulation violations
Solution Approach 1:
The patent implements dynamic link combination selection where the electronic device continuously monitors link states and SAR backoff regulation values, then adjusts the active link combination in real-time. This allows the system to maximize data throughput when SAR limits permit while dynamically reducing active links when approaching SAR thresholds, thus resolving the contradiction between productivity and electromagnetic wave absorption.
Solution Approach 2:
The system changes operational parameters by selecting different link combinations based on verified TAS backoff regulation values. When SAR headroom is available, the system activates more links for higher throughput; when SAR limits are approached, it reduces the number of active links or adjusts their configurations, thereby adapting the system parameters to balance throughput and electromagnetic exposure.
2Productivity
If link combinations are dynamically adjusted to maximize throughput, then productivity is improved, but device complexity increases due to multiple verification and negotiation processes
Solution Approach 1:
The patent performs TAS backoff regulation verification in advance before selecting link combinations. By pre-verifying the available SAR headroom and determining permissible link configurations ahead of time, the system simplifies the subsequent link selection process and avoids complex real-time calculations during data transmission, thus managing device complexity while maintaining high throughput.
Solution Approach 2:
The system implements feedback mechanisms where link combination selections are based on verified TAS backoff values and negotiation results with AP MLD. This feedback loop ensures that throughput optimization decisions are grounded in actual regulatory constraints and network conditions, reducing unnecessary complexity by making informed decisions rather than exhaustive searches.
3Adaptability or versatility
If TID-to-link mapping negotiation is performed to optimize link usage, then adaptability is improved, but loss of time occurs during negotiation processes
Solution Approach 1:
The patent performs TID-to-link mapping negotiation as a preliminary step before actual data transmission begins. By establishing the mapping relationships in advance during connection setup or reconfiguration phases, the system avoids repeated negotiations during active transmission, thus minimizing time loss while maintaining the adaptability to optimize link configurations for different traffic patterns.
Data Source
AI summary
An electronic device is provided. The electronic device includes at least one wireless communication circuitry configured to transmit and receive wireless signals, memory storing one or more computer programs, and one or more processors communicatively coupled to the at least one wireless communication circuitry and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the electronic device to verify a time-averaged specific absorption rate (SAR) (TAS) backoff regulation value allocated to a multi-link operation (MLO) for a time window, and based on the TAS backoff regulation value, determine a link combination to be used during the time window, and wherein the link combination has a highest total data throughput sum among link combination candidates each comprising links used in the MLO.