Autonomous-Resource HARQ Signaling for Collision-Prone Uplinks
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Solution Overview
Problem
The challenge in wireless communication systems is how to efficiently transmit hybrid automatic repeat request (HARQ) information when terminal devices autonomously select wireless resources, particularly in scenarios with reduced collision probabilities and varying data packet arrival patterns, leading to potential collisions and increased latency.
Innovation Solution
Terminal devices autonomously select wireless resources for data transmission and indicate their identifier to the network device, ensuring the network can accurately identify the source of the transmission, thereby facilitating smooth HARQ feedback and improving data transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal devices autonomously select wireless resources for data transmission, then resource utilization efficiency is improved, but the risk of potential collisions between transmissions increases
Solution Approach 1:
The patent implements a feedback mechanism where the network device sends HARQ feedback information to the terminal device based on the received transport block and identifier. This feedback loop allows the system to adapt to transmission outcomes, enabling retransmissions when collisions or errors occur, thus maintaining high resource utilization while managing collision risks through dynamic adjustment of transmission parameters.
Solution Approach 2:
The patent introduces an identifier indication mechanism as an intermediary element between the terminal device and network device. The terminal device indicates its identifier to the network device along with the transport block, allowing the network device to correctly associate received data with the appropriate terminal device even in autonomous resource selection scenarios, thereby reducing collision-related errors.
2Reliability
If HARQ feedback is implemented in autonomous resource selection scenarios, then data transmission reliability is improved, but system complexity increases
Solution Approach 1:
The patent extracts the identifier indication function from the traditional scheduled resource allocation framework and integrates it into the autonomous resource selection mechanism. By separating the identifier indication from complex scheduling procedures, the system achieves reliable HARQ feedback in autonomous scenarios without proportionally increasing overall system complexity.
Solution Approach 2:
The patent designs the identifier indication mechanism to serve multiple functions: it enables the network device to identify the transmitting terminal device, supports HARQ feedback association, and facilitates collision resolution. This multi-functionality reduces the need for separate mechanisms, thereby limiting the increase in system complexity while achieving reliable HARQ feedback.
3Measurement precision
If terminal devices indicate their identifier when transmitting data over autonomously selected resources, then HARQ feedback accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent merges the identifier indication with the existing uplink data transmission by incorporating the identifier into the same physical uplink shared channel (PUSCH) that carries the transport block. This combining approach ensures accurate HARQ feedback association while minimizing additional signaling overhead, as the identifier is transmitted alongside the data rather than in a separate signaling message.
Data Source
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AI summary
The present application relates to the technical field of communications. Disclosed are a wireless communication method and apparatus, and a device, a storage medium and a program product. The method comprises: a terminal device using an autonomously selected first radio resource to send to a network device a first transport block and HARQ information corresponding to the first transport block, and indicating an identifier of the terminal device to the network device (210). For a scenario where a terminal device autonomously selects a radio resource for data transmission, provided in the present application is an HARQ communication method. In the method, when using an autonomously selected radio resource to send to a network device a transport block and HARQ information corresponding to the transport block, a terminal device indicates an identifier of the terminal device to the network device, such that after receiving the transport block, the network device can learn of which terminal device sends the transport block, thereby ensuring that subsequent HARQ feedback can be performed smoothly, and thus improving the reliability of data sending when there is a potential conflict.