ARQ Process Lifetime Management for Wireless Transmission Efficiency
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Solution Overview
Problem
In wireless networks operating in unlicensed frequency bands, the automatic repeat request (ARQ) process consumes excessive management and storage resources due to uncertainty in access time, limiting the number of concurrent ARQ processes and reducing transmission efficiency.
Innovation Solution
Implementing a method where an automatic repeat request process is created for a packet with a set lifetime, allowing retransmissions within that timeframe and automatically ending the process when the lifetime expires or upon receipt of a correct acknowledgment, enabling timely resource release for new ARQ processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automatic repeat request mechanism is implemented without lifetime limitation, then transmission reliability is improved through retransmissions, but management and storage resources are occupied for too long and transmission efficiency is reduced
Solution Approach 1:
The patent introduces a lifetime parameter for ARQ processes, transforming the unlimited resource occupation into a time-bounded process. Each ARQ process is assigned a maximum duration, and when this lifetime expires, the process is automatically terminated and resources are released. This parameter change resolves the contradiction by ensuring retransmissions maintain reliability while preventing indefinite resource occupation that would reduce transmission efficiency.
2Device complexity
If the maximum number of concurrent ARQ processes is limited by device capability, then device resource management is simplified, but new ARQ processes cannot be created when resources are not released in time
Solution Approach 1:
The patent implements preliminary action by pre-defining lifetime durations for ARQ processes before they are executed. This allows the system to predict and plan resource usage in advance, ensuring that when an ARQ process is created, sufficient resources are available. The lifetime parameter is set beforehand, preventing resource exhaustion and enabling continuous creation of new ARQ processes within device capabilities.
3Reliability
If ARQ processes are maintained indefinitely to ensure complete data delivery, then data completeness is improved, but management resources are occupied too long and storage resources are wasted
Solution Approach 1:
The patent implements periodic action through the lifetime mechanism, where each ARQ process operates within a defined time period. The system periodically checks and terminates ARQ processes that have exceeded their lifetime, releasing management and storage resources. This periodic resource management ensures data delivery completeness for urgent transmissions while preventing long-term resource occupation, balancing reliability with resource efficiency.
Data Source
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AI summary
Provided are a transmission method, apparatus and system and a computer-readable storage medium. The transmission method includes creating an automatic repeat request process for a first packet; setting a lifetime for the automatic repeat request process; and sending the first packet. The lifetime is set for the automatic repeat request process so that the automatic repeat request process can be removed in time. In this manner, in the case where a limited number of automatic repeat request processes are simultaneously supported, a new automatic repeat request process can be created for a newly transmitted packet in time, and thus the transmission efficiency is improved.