Wireless Data Packet Retransmission via Preliminary Buffering
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Solution Overview
Problem
In wireless communication networks, the existing HARQ and ARQ processes introduce delays and low throughput due to inefficient data retransmission mechanisms, especially in scenarios with limited uplink power, leading to unsuccessful ARQ feedback and detrimental downlink data transmission.
Innovation Solution
A method for enhanced data retransmission in wireless communication networks involves generating and transmitting data packets based on indicators and configurations, using HARQ feedback to determine the need for retransmission, and optimizing UL resource allocation and MCS orders for efficient data packet generation and retransmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional HARQ and ARQ processes are used for data retransmission, then data transmission robustness is improved, but transmission delays increase and throughput decreases
Solution Approach 1:
The patent applies preliminary action by pre-generating and buffering multiple candidate data packets at the transmitting end before retransmission is needed. When a retransmission is triggered, the pre-prepared packets can be immediately sent without waiting for generation or processing, thus reducing delay while maintaining reliability through the availability of multiple candidate packets.
2Use of energy by moving object
If ARQ feedback data transmission is performed with limited uplink power, then power consumption is reduced, but feedback success rate decreases and downlink throughput deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-generating and buffering multiple candidate data packets at the transmitting end before retransmission is needed. When a retransmission is triggered, the pre-prepared packets can be immediately sent without waiting for generation or processing, thus reducing delay while maintaining reliability through the availability of multiple candidate packets.
3Productivity
If fast data packet generation is implemented for retransmission, then throughput is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-generating and buffering multiple candidate data packets at the transmitting end before retransmission is needed. When a retransmission is triggered, the pre-prepared packets can be immediately sent without waiting for generation or processing, thus reducing delay while maintaining reliability through the availability of multiple candidate packets.
Solution Approach 2:
The patent applies local quality by making data packet generation adaptive to local conditions such as channel quality, packet type, and priority. Different packets in the buffer can be generated with different characteristics suited to their specific requirements, allowing the system to optimize performance for each packet independently while managing overall complexity.
Data Source
AI summary
A method and apparatus for data retransmission in a wireless communication network, specifically, for a data packet generation before retransmission, according to available resources, link status, and the like is disclosed. In one embodiment, a method for a data packet retransmission by a wireless communication device, includes: receiving first information from a wireless communication node, wherein the first information comprises a first indicator; and performing a data packet retransmission with a data packet generation according to the indicator.