Sidelink HARQ Feedback PSFCH Resource Pool Configuration
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Solution Overview
Problem
Current 5G radio access technologies face challenges in efficiently transmitting sidelink HARQ feedback information across diverse usage scenarios, such as enhanced mobile broadband, massive machine-type communication, and ultra-reliable and low-latency communication, due to varying requirements for data rates, latency, and reliability.
Innovation Solution
The method involves configuring and allocating radio resources for sidelink HARQ feedback information using a physical sidelink feedback channel (PSFCH) resource pool, allowing user equipment (UE) to determine and transmit/receive HARQ feedback within this pool, enabling flexible resource allocation in next-generation (NR) wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible frame structures are designed to meet different usage scenario requirements, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the feedback resource pool into multiple PSFCH resource pools, each configured for specific usage scenarios or service types. This segmentation allows the system to provide flexible frame structures for different scenarios (eMBB, mMTC, URLLC) while managing complexity through organized, scenario-specific resource allocation rather than a single complex unified structure.
2Reliability
If radio resources are efficiently allocated for sidelink HARQ feedback, then data transmission stability is improved, but resource allocation complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring PSFCH resource pools with specific resource allocation rules and parameters before actual sidelink communication occurs. The base station pre-allocates feedback resources and configures UEs with resource pool information, ensuring that when HARQ feedback needs to be transmitted, suitable resources are already prepared and allocated, thereby improving transmission stability while managing allocation complexity through advance planning.
3Productivity
If PSFCH resource pools are configured for different numerologies, then productivity is improved, but measurement precision requirements increase
Solution Approach 1:
The patent applies local quality by configuring different PSFCH resource pool parameters and resource allocation strategies tailored to specific numerologies and usage scenarios. Each resource pool is optimized with appropriate time-frequency resource patterns, periodicity, and allocation rules suitable for its designated numerology (e.g., different subcarrier spacings for eMBB versus URLLC), thereby improving overall system productivity while maintaining accurate resource determination through scenario-specific optimization rather than one-size-fits-all approaches.
Data Source
AI summary
Provided are a method and an apparatus of a user equipment for transmitting sidelink HARQ feedback information. The method includes: receiving configuration information on a PSFCH resource pool, and determining a PSFCH resource for transmitting HARQ feedback information within the PSFCH resource pool, and transmitting the HARQ feedback information using PSFCH resource.