Multi-Panel PUSCH Repetition With RV and SRI Patterns
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Solution Overview
Problem
Existing wireless communication systems face limitations in communication flexibility and efficiency, particularly in managing uplink shared channels (PUSCH) for improved reliability and reduced latency.
Innovation Solution
Implementing a user equipment (UE) and base station apparatus with higher layer circuitry to configure physical uplink shared channel (PUSCH) repetition, using redundancy version and sounding reference signal index fields to indicate patterns for each repetition, and transmitting/receiving downlink control information (DCI) on a physical downlink control channel (PDCCH) to enhance communication efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUSCH repetition is configured with multiple redundancy versions and SRI patterns, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the PUSCH transmission into multiple repetitions, each with specific redundancy versions and SRI patterns. This segmentation allows the system to achieve higher reliability through diverse transmission patterns while managing complexity by structuring the repetitions in a systematic manner rather than requiring completely different transmission mechanisms.
Solution Approach 2:
The patent utilizes parameter changes by varying redundancy versions and SRI patterns across different PUSCH repetitions. This allows the system to adapt transmission parameters dynamically to improve reliability without requiring fundamental changes to the device architecture, thus balancing reliability improvement with complexity management.
2Adaptability or versatility
If PUSCH repetition patterns are implemented with multiple SRIs, then communication flexibility is improved, but scheduling complexity increases
Solution Approach 1:
The patent implements multi-functionality by using the same PUSCH repetition framework to support multiple SRIs and redundancy versions. This universal approach allows a single scheduling mechanism to handle diverse transmission requirements, improving flexibility without proportionally increasing scheduling complexity.
Solution Approach 2:
The patent introduces dynamic element selection where the UE can dynamically choose different SRI patterns and redundancy versions based on channel conditions. This dynamic adaptation provides communication flexibility while the structured nature of the patterns keeps scheduling complexity manageable through predefined options rather than completely open decision spaces.
3Loss of time
If earliest DMRS is used for PUSCH transmission, then latency is reduced, but transmission reliability may be compromised
Solution Approach 1:
The patent applies preliminary action by using the earliest available DMRS for initial transmission, enabling low-latency communication. The system prepares and transmits data as soon as the DMRS is available, minimizing time loss while the repetition mechanism provides reliability through multiple transmission opportunities.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining PUSCH transmission across multiple repetitions with different redundancy versions. This continuous transmission approach allows the system to achieve both low latency (through early DMRS utilization) and high reliability (through multiple transmission attempts), as the useful transmission action continues uninterrupted across repetition cycles.
Data Source
AI summary
A user equipment (UE) is described. Higher layer circuitry is configured to receive information to configure a physical uplink shared channel (PUSCH) repetition. Receiving circuitry is configured to receive downlink control information (DCI) on a physical downlink control channel (PDCCH). Transmitting circuitry is configured to transmit a PUSCH. A redundancy version field in the DCI indicates a pattern of redundancy versions for each repetition. A sounding reference signal index (SRI) field indicates a pattern of sounding reference signal indexes for each repetition.