PUSCH Repetition Collision Handling via Priority Selection
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Solution Overview
Problem
In wireless communication systems, particularly in 5G and NR, user equipment (UE) faces challenges in resolving collisions between aperiodic channel state information (A-CSI) report communications scheduled for repetition on a multi-slot physical uplink shared channel (PUSCH) and other communications on a physical uplink control channel (PUCCH), leading to transmission conflicts and potential data loss.
Innovation Solution
The UE identifies overlapping slots, selects an uplink communication based on priority assignments for A-CSI report and other communications, and determines whether to transmit on the multi-slot PUSCH or PUCCH, dropping the non-selected communication to resolve collisions and ensure reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE transmits both A-CSI report communication on multi-slot PUSCH and other communications on PUCCH simultaneously, then channel utilization is maximized, but transmission conflicts and data loss occur due to resource collisions
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmission parameters based on priority levels. When a collision is detected between A-CSI report on multi-slot PUSCH and other communications on PUCCH, the UE changes the transmission parameter by selecting which communication to transmit based on assigned priorities, thereby resolving the resource conflict while maintaining reliable transmission of high-priority data
Solution Approach 2:
The patent implements discarding and recovering by selectively dropping lower-priority communications when collisions occur. The UE identifies the collision, compares priorities, and discards the lower-priority transmission to ensure the higher-priority communication is transmitted reliably. This may involve dropping either the A-CSI report or the PUCCH communication depending on their relative priorities
2Reliability
If the UE prioritizes A-CSI report communication over other communications during collisions, then CSI reporting reliability is improved, but other uplink control transmissions may be dropped
Solution Approach 1:
The patent uses parameter changes by dynamically adjusting transmission decisions based on priority parameters. The UE assigns priority values to different communications (A-CSI report vs. other PUCCH communications) and changes the transmission parameter by selecting the high-priority communication for transmission while dropping the lower-priority one, thereby ensuring CSI reporting reliability when needed
3Adaptability or versatility
If the UE implements complex collision resolution logic with priority assignments, then transmission conflict resolution capability is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by using priority assignment parameters to simplify the collision resolution process. Instead of implementing complex real-time analysis of all transmission parameters, the UE uses pre-assigned priority parameters to make straightforward transmission decisions, thereby improving collision resolution capability while keeping device complexity manageable
Solution Approach 2:
The patent implements self-service by enabling the UE to autonomously resolve collisions using locally stored priority information. The UE independently identifies collisions, compares priority parameters, and makes transmission decisions without requiring complex network coordination or additional signaling, thereby enhancing adaptability while minimizing added complexity
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify one or more slots in which an aperiodic channel state information (A-CSI) report communication on a multi-slot physical uplink shared channel (PUSCH) overlaps with a second communication on a physical uplink control channel (PUCCH). The UE may select for a slot of the one or more slots, an uplink communication from the A-CSI report communication or the second communication based at least in part on a first priority assigned to the A-CSI report communication and a second priority assigned to the second communication. The UE may determine whether to transmit the uplink communication on the multi-slot PUSCH or the PUCCH in the slot. The UE may transmit the uplink communication in the slot. Numerous other aspects are provided.