Dynamic Maximum Code Rate Limit Adjustment for Wireless Devices
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Solution Overview
Problem
Current wireless communication networks impose a conservative maximum code rate limit of 0.931 to ensure decoding, which can lead to reduced peak throughput for devices with better decoding capabilities and good channel conditions, as they may skip decoding transport blocks with higher effective code rates, resulting in noticeable throughput drops.
Innovation Solution
A network node adjusts the maximum channel code rate limit for each wireless device based on successful data transmission indications, such as HARQ ACKs, to dynamically increase the limit if the device can successfully decode higher code rates, thereby improving peak rates and cell throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conservative maximum code rate limit of 0.931 is imposed to ensure decoding, then decoding reliability is improved, but peak throughput is reduced for devices with better decoding capabilities
Solution Approach 1:
The patent applies dynamics by transitioning from a static, conservative code rate limit (0.931) to a dynamic, device-specific limit that adapts based on individual wireless device capabilities and channel conditions. The network node determines a device-specific maximum code rate limit that can be higher than the conservative limit for devices with better decoding capabilities, allowing the system to optimize throughput while maintaining reliability through adaptive rather than fixed constraints.
Solution Approach 2:
The patent applies local quality by moving from a uniform code rate limit applied to all devices to device-specific limits tailored to individual wireless device capabilities. Each device receives a customized maximum code rate limit based on its decoding capability, allowing devices with better capabilities to operate at higher code rates for improved throughput, while devices with limited capabilities continue to use the conservative limit for reliable decoding.
2Device complexity
If a fixed maximum code rate limit is applied to all wireless devices, then system simplicity is maintained, but adaptability to different device capabilities is reduced
Solution Approach 1:
The patent applies local quality by implementing device-specific maximum code rate limits that are tailored to individual wireless device capabilities. Instead of a uniform limit, the network node determines and applies customized limits for each device based on its decoding capability, thereby improving adaptability while maintaining reasonable system complexity through automated determination processes.
Solution Approach 2:
The patent applies feedback by implementing a process where the network node determines device-specific maximum code rate limits based on wireless device capabilities and channel conditions. The network node receives feedback about device performance and uses this information to adjust the code rate limits, creating a closed-loop system that adapts to changing conditions while managing complexity through automated feedback-based adjustment.
Data Source
AI summary
According to one aspect of the disclosure, a network node for adjusting a maximum channel code rate limit of a wireless device is provided. The network node includes processing circuitry. The processing circuitry includes a processor and a memory. The memory contains instructions that, when executed by the processor, configure the processor to: cause transmission, to the wireless device, of at least one data transmission coded at a maximum channel code rate that is one of less than and equal to a maximum channel code rate limit, receive at least one indication of reception of the at least one data transmission coded at the maximum channel code rate by the wireless device, and in response to receiving the at least one indication of reception associated with the at least one data transmission coded at the maximum channel code rate, modify the maximum channel code rate limit.