UE Physical Uplink Channel Collision Handling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently handling collisions between physical uplink channels with different priority levels, particularly when user equipment (UE) is not enabled for simultaneous physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) transmissions.
Innovation Solution
A method and apparatus for a user equipment (UE) to determine overlapping physical uplink channels with different priority levels and transmit them based on prioritization or multiplexing, depending on the UE's capability to perform simultaneous PUCCH and PUSCH transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE prioritizes transmission of high-priority physical uplink channels over low-priority channels during collisions, then communication reliability is improved, but transmission efficiency and resource utilization deteriorate due to dropped low-priority transmissions
Solution Approach 1:
The patent combines multiple physical uplink channels (PUCCH and PUSCH) into a single multiplexed transmission when the UE is not enabled for simultaneous transmissions. This merging allows both high-priority control information and low-priority data to be transmitted together in one channel, resolving the collision without dropping either transmission and thereby maintaining both reliability and transmission efficiency.
2Productivity
If the UE performs simultaneous PUCCH and PUSCH transmissions, then transmission efficiency is improved, but device complexity and processing requirements worsen
Solution Approach 1:
The patent implements dynamic transmission behavior that adapts to the UE's capability status. When simultaneous PUCCH and PUSCH transmissions are enabled, the UE performs both transmissions separately for optimal efficiency. When not enabled, the system dynamically switches to multiplexing mode, adjusting the transmission strategy based on real-time capability conditions to balance efficiency and complexity.
3Productivity
If the UE multiplexes overlapping physical uplink channels, then resource utilization is improved, but transmission time and processing overhead worsen
Solution Approach 1:
The patent performs preliminary determination of channel overlap and priority levels before actual transmission. By identifying collisions in advance and pre-configuring the multiplexing strategy based on channel priorities, the system prepares the multiplexed transmission structure beforehand, reducing the processing time required during the actual transmission phase and minimizing overall transmission time loss.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that multiple physical uplink channels scheduled for the UE overlap. The multiple physical uplink channels may include a first physical uplink channel and a second physical uplink channel that are associated with different priority levels. The UE may transmit at least one of the first physical uplink channel or the second physical uplink channel according to a prioritization or a multiplexing of the first physical uplink channel and the second physical uplink channel. The prioritization or the multiplexing is based at least in part on whether the UE is enabled to perform simultaneous physical uplink control channel and physical uplink shared channel transmissions. Numerous other aspects are provided.