Terminal Uplink HARQ Signaling on Autonomous Wireless Resources
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Solution Overview
Problem
In wireless communication systems, especially in scenarios with reduced collision probability due to new frequency spectrums and smaller cell sizes, there is a challenge in efficiently transmitting Hybrid Automatic Repeat Request (HARQ) information when terminal devices autonomously select wireless resources for uplink data transmission.
Innovation Solution
The solution involves a method where a terminal device transmits a transport block and corresponding HARQ information over a wireless resource autonomously selected from a shared resource pool. The terminal device also indicates its identifier to the network device, ensuring that the network can correctly associate the received transport block with the appropriate terminal device, even in cases of potential resource collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal devices autonomously select wireless resources for uplink data transmission, then resource allocation efficiency is improved, but the risk of resource collision increases
Solution Approach 1:
The patent implements a feedback mechanism where the network device sends back acknowledgment information (HARQ-ACK) to the terminal device regarding the received transport block. This feedback loop allows the terminal to know whether its autonomous resource selection was successful and whether the network correctly received the data, thereby maintaining reliability while preserving the efficiency benefits of autonomous selection.
Solution Approach 2:
The patent introduces an intermediary identification mechanism where the terminal device includes its identifier in the uplink signal transmitted on the autonomously selected resource. This intermediary identifier allows the network device to correctly associate the received transport block with the specific terminal device, resolving the potential ambiguity in resource collision scenarios while maintaining autonomous resource selection.
2Productivity
If terminal devices transmit HARQ information on autonomously selected resources, then transmission efficiency is improved, but identification accuracy of transmitting terminal device may deteriorate
Solution Approach 1:
The patent uses the terminal device identifier as an intermediary element that is transmitted along with the HARQ information on the autonomously selected resource. This identifier acts as a mediator that allows the network device to accurately identify which terminal device transmitted the HARQ information, resolving the potential ambiguity while maintaining the efficiency of autonomous resource selection.
Solution Approach 2:
The patent makes the autonomously selected wireless resource serve multiple functions: it carries both the transport block data and the HARQ information, and also includes the terminal device identifier. This multi-functionality allows the single resource to simultaneously achieve efficient transmission and accurate identification without requiring separate dedicated channels.
Data Source
AI summary
Provided is a method for wireless communication. The method is applicable to a terminal device. The method includes: transmitting a first transport block and hybrid automatic repeat request (HARQ) information corresponding to the first transport block to a network device over a first wireless resource, and indicating an identifier of the terminal device to the network device, wherein the first wireless resource is autonomously selected by the terminal device.