Dynamic HARQ Process Configuration for Buffer Optimization
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Solution Overview
Problem
Current wireless communication networks, such as LTE, have static and non-dynamically configurable HARQ configurations, which are inefficient in managing HARQ buffers and resources across different operating modes, particularly in next-generation networks like 5G NR that require varying latency and reliability levels.
Innovation Solution
The method determines the number of concurrent HARQ processes based on the number of HARQ buffers, maximum buffering time, and slot duration, allowing for dynamic maintenance and communication using these processes to optimize buffer usage and resource allocation across different operating modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If HARQ configuration is static and predefined as in LTE networks, then device complexity is reduced and ease of operation is improved, but adaptability to different operating modes and efficient buffer usage deteriorates
Solution Approach 1:
The patent implements dynamic HARQ configuration where the number of HARQ processes is determined by the formula N_HARQ = min(N, T_buffer / T_slot), allowing the system to adapt to different operating modes and latency requirements rather than using static predefined configurations
Solution Approach 2:
The patent changes the parameter N_HARQ dynamically based on buffer size and slot duration parameters, enabling the system to optimize HARQ buffer usage and adapt to varying service requirements including low latency and mission critical communications
2Productivity
If the number of HARQ processes is increased to improve communication efficiency and buffer usage, then productivity is improved, but device complexity and resource management difficulty increase
Solution Approach 1:
The system automatically determines the optimal number of HARQ processes using the formula N_HARQ = min(N, T_buffer / T_slot), eliminating the need for manual configuration and complex resource management while optimizing communication efficiency
Solution Approach 2:
The patent uses feedback from buffer status and slot duration measurements to dynamically adjust the number of HARQ processes, ensuring optimal resource utilization without requiring complex manual intervention
Data Source
AI summary
Aspects of the present disclosure provide apparatuses, methods, and processes that can determine the number of concurrent hybrid automatic repeat request (HARQ) processes at a HARQ entity to facilitate efficient use of HARQ buffers and/or resources across different operating modes. An exemplary apparatus is configured to determine a number of HARQ processes based on a number of HARQ buffers, a maximum buffering time, and a slot duration. The apparatus maintains one or more HARQ processes at a HARQ entity up to the determined number of HAR processes and communicate with the one or more other devices utilizing the one or more HARQ processes.