PUCCH Repetition Counting and Spatial Settings
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Solution Overview
Problem
In 5G wireless communication systems, there is a need to accurately determine and manage spatial settings for PUCCH transmissions with repetitions to avoid link failures and improve quality of service, as existing systems lack a common understanding between base stations and user equipment regarding spatial settings for PRACH and PUSCH transmissions, leading to potential misconfigurations and increased latency.
Innovation Solution
The implementation of a method where user equipment (UE) and base stations (BS) exchange information to configure and indicate spatial settings for PUCCH transmissions, using system information blocks (SIB) to determine and adjust settings based on channel state information (CSI) and CSI-RS resources, allowing for dynamic adaptation of spatial settings and CSI reporting to ensure accurate PUCCH transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spatial settings for PUCCH transmissions are not properly configured, then link failures occur and quality of service deteriorates, but implementing proper configuration requires additional signaling overhead and system complexity
Solution Approach 1:
The patent applies universality by using the same spatial setting configuration mechanism for both PRACH and PUSCH transmissions. The base station configures spatial settings that can be universally applied across different transmission types, eliminating the need for separate configuration procedures and reducing system complexity while maintaining reliability.
Solution Approach 2:
The patent implements feedback mechanisms where user equipment reports channel state information and spatial setting effectiveness to the base station. This feedback loop enables dynamic adjustment of spatial configurations, improving PUCCH transmission reliability while allowing the system to adapt to changing conditions without requiring complex predetermined configurations.
2Productivity
If repetitions of PUCCH transmissions are canceled without proper counting mechanisms, then transmission efficiency improves, but accuracy of determining total repetitions decreases leading to potential misconfigurations
Solution Approach 1:
The patent applies preliminary action by establishing a clear counting mechanism before repetitions are canceled. The base station and user equipment agree on the total number of repetitions in advance, and the counting process is initiated before any cancellations occur. This ensures that even if repetitions are canceled, the system maintains accurate knowledge of the original repetition count, preventing misconfigurations while allowing efficient cancellation of unnecessary transmissions.
3Device complexity
If spatial settings are statically configured, then system complexity is reduced, but adaptability to changing channel conditions deteriorates increasing latency
Solution Approach 1:
The patent implements dynamics by transitioning from static spatial setting configurations to dynamic ones. The base station can update spatial settings based on channel state information feedback from user equipment, allowing the system to adapt to changing channel conditions. This dynamic approach maintains manageable complexity through standardized update procedures while significantly improving adaptability and reducing latency compared to static configurations.
Data Source
AI summary
Methods and apparatuses for physical uplink control channel (PUCCH) transmissions with repetitions. A method for operating a user equipment includes receiving first information indicating a configuration for directions of symbols and receiving second information indicating whether a repetition of a transmission is counted when the repetition of the transmission is canceled. The method further includes determining that a first repetition of the transmission includes a symbol with downlink direction based on the first information determining a counter number of repetitions based on the second information, and canceling the first repetition of the transmission.