Terminal Device UCI Multiplexing PUCCH PUSCH Conflict Resolution
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Solution Overview
Problem
In the context of LTE and next-generation NR communication systems, there is a challenge in efficiently managing conflicts between Physical Uplink Control Channel (PUCCH) and Physical Uplink Shared Channel (PUSCH) transmissions, particularly when Channel State Information (CSI) is semi-permanently or aperiodically transmitted, which affects communication efficiency.
Innovation Solution
The solution involves multiplexing Uplink Control Information (UCI) onto dynamically scheduled PUSCH when PUCCH conflicts with multiple PUSCHs, including those for semi-permanently or aperiodically transmitted CSI, ensuring efficient communication by prioritizing PUSCH selection based on serving cell identifiers and transmission types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UCI is multiplexed onto PUSCH when PUCCH conflicts with multiple PUSCHs, then communication efficiency is improved, but device complexity increases due to multiple conflict resolution scenarios
Solution Approach 1:
The patent applies parameter changes by modifying the multiplexing behavior based on the type of CSI transmission. When semi-persistent CSI is configured, UCI is multiplexed onto the first PUSCH regardless of conflicts with other PUSCHs. When aperiodic CSI is configured, UCI is multiplexed onto the PUSCH carrying aperiodic CSI. This parameter-based differentiation resolves conflicts systematically while maintaining communication efficiency.
Solution Approach 2:
The patent segments the conflict resolution process into distinct cases based on CSI transmission types. It separates the handling of semi-persistent CSI conflicts from aperiodic CSI conflicts, applying different multiplexing rules to each segment. This segmentation simplifies the overall complexity by breaking down the multi-scenario conflict resolution into manageable, rule-based segments.
2Reliability
If PUCCH conflicts with multiple PUSCHs are handled with different multiplexing rules, then transmission reliability is improved, but ease of operation deteriorates due to complex selection criteria
Solution Approach 1:
The patent uses parameter changes to determine multiplexing behavior based on CSI transmission types. By detecting whether semi-persistent or aperiodic CSI is configured, the system automatically applies the appropriate multiplexing rule, ensuring reliable transmission without requiring manual intervention or complex selection processes.
Solution Approach 2:
The system implements self-service by automatically selecting the appropriate PUSCH for UCI multiplexing based on pre-configured CSI transmission types. The terminal device autonomously resolves conflicts according to the detected CSI configuration, eliminating the need for complex external coordination or manual selection criteria.
3Productivity
If UCI is multiplexed onto aperiodically transmitted PUSCH, then communication efficiency is improved, but loss of time increases due to aperiodic transmission timing
Solution Approach 1:
The patent applies parameter changes by detecting the CSI transmission type (aperiodic vs. semi-persistent) and adjusting the multiplexing strategy accordingly. When aperiodic CSI is detected, UCI is multiplexed onto that specific PUSCH, ensuring efficient utilization of available resources while accepting the timing characteristics of aperiodic transmission.
Data Source
AI summary
A terminal device for performing communication method, the terminal device comprising a receiver for receiving a PDCCH having a first DCI format; and a transmitter for transmitting a PUCCH including UCI, and a PUSCH. The transmitter multiplexes the UCI onto a first PUSCH dynamically scheduled via the first DCI format when the PUCCH conflicts with a first plurality of PUSCHs including the first PUSCH and a second PUSCH for semi-permanently transmitted CSI, and multiplexes the UCI onto a third PUSCH for aperiodically transmitted CSI when the PUCCH conflicts with the third PUSCH.