Uplink Channel Prioritization for Multi-TRP Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing uplink channels with multiple transmission reception points (TRPs), particularly in scheduling and resource allocation, leading to overlapping and collision issues, which affect the transmission of uplink control information.
Innovation Solution
A method is proposed where a user equipment (UE) receives downlink control information from multiple TRPs, schedules uplink channels based on different control resource sets, and prioritizes the transmission of uplink channels based on the content priority and number of serving cells, using multiplexing and dropping techniques to manage overlapping resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink channels are scheduled for multiple TRPs simultaneously, then the coverage and reliability of uplink control information transmission is improved, but resource overlapping and collision occur between different TRP resources
Solution Approach 1:
The patent divides uplink channel resources into separate resource groups, where each resource group is associated with a specific TRP. This segmentation allows the system to maintain multiple TRP connections while preventing resource conflicts by assigning distinct resource pools to each TRP, thus resolving the contradiction between improved reliability through multiple TRPs and avoidance of resource overlapping.
2Productivity
If priority rules are implemented for uplink channel transmission, then resource allocation efficiency is improved, but system complexity increases due to priority determination and multiplexing decisions
Solution Approach 1:
The patent establishes priority rules in advance for different uplink channel types (e.g., PUCCH formats, HARQ-ACK, SR, CSI) and configures resource groups beforehand. When resource overlapping occurs, the UE applies these pre-defined priority rules automatically without complex real-time decision-making, thus improving resource allocation efficiency while minimizing additional system complexity.
Data Source
AI summary
A method of transmitting and receiving an uplink channel in a wireless communication system and a device therefor are disclosed. Specifically, a method of transmitting an uplink channel by a user equipment (UE) includes receiving first downlink control information (DCI) based on a first control resource set group; wherein a first uplink channel is scheduled based on the first DCI; receiving second DCI based on a second control resource set group; wherein a second uplink channel is scheduled based on the second DCI; and transmitting only one of the first uplink channel and the second uplink channel based on overlapping of a resource of the first uplink channel and a resource of the second uplink channel, wherein the first or the second uplink channel is dropped based on a priority rule, and a priority of the priority rule is determined based on contents of information included in each uplink channel.