Uplink Control Channel Grouping for Multiple TRPs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in efficiently managing physical uplink control channel grouping for multiple transmit receive points, leading to network congestion and reduced throughput due to collisions between scheduled transmissions.
Innovation Solution
A method where user equipment (UE) identifies and transmits control information to multiple transmit receive points (TRPs) using separate uplink control channel groups, allowing contemporaneous transmission of control information associated with different TRPs, thereby avoiding collisions and optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If control information for multiple TRPs is transmitted using a single uplink control channel, then device complexity is reduced, but transmission collisions occur and reliability deteriorates
Solution Approach 1:
The patent divides the uplink control channel into multiple separate groups (first uplink control channel group and second uplink control channel group), each associated with different TRPs. This segmentation allows control information for different TRPs to be transmitted independently through different channel groups, preventing collisions while maintaining manageable complexity through structured organization.
2Reliability
If separate uplink control channel groups are used for different TRPs, then transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal control channel group structure where each uplink control channel group can serve multiple downlink cells associated with different TRPs. This multi-functionality allows the system to handle multiple TRPs through standardized channel groups, improving reliability while controlling complexity through reusable, multi-purpose channel configurations.
3Productivity
If control information is transmitted contemporaneously to multiple TRPs, then throughput is improved, but resource allocation complexity increases
Solution Approach 1:
The patent introduces a new dimension in resource allocation by creating separate uplink control channel groups for different TRPs. This dimensional separation in the control channel space enables contemporaneous transmission to multiple TRPs without interfering with each other, thereby improving throughput while managing allocation complexity through structured multi-dimensional resource organization.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may identify a first group of downlink cells communicating with a first transmit receive point (TRP) that is associated with a first uplink control channel cell; identify a second group of downlink cells communicating with a second TRP that is associated with a second uplink control channel cell; transmit first control information associated with the first group of downlink cells, using resources allocated for a first uplink control channel for the first uplink control channel cell, to the first TRP; and transmit second control information associated with the second group of downlink cells, using resources allocated for a second uplink control channel for the second uplink control channel cell, to the second TRP, the second control information being selectively transmitted contemporaneously with the first control information. Numerous other aspects are provided.