Multi-Cell PUCCH Switching Pattern for Reliable Cell-Edge Uplink
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Solution Overview
Problem
Existing PUCCH repetition schemes primarily rely on resources from a single cell, which can impact the overall performance of uplink and downlink transmissions, particularly for user equipment at the cell edge.
Innovation Solution
Implementing a PUCCH cell switching pattern that allows PUCCH transmissions to switch between multiple cells, utilizing resources from both a primary cell and secondary cells to distribute repetitions across these cells based on a configured pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PUCCH repetition scheme uses resources from a single cell, then uplink coverage performance is improved for cell edge UEs, but overall uplink and downlink transmission performance is impacted
Solution Approach 1:
The patent segments the PUCCH repetition transmission across multiple cells by introducing a cell switching pattern. Instead of concentrating all repetitions in one cell, the transmission is divided into portions that are sent on different cells according to a configured pattern, thereby improving coverage while reducing impact on single-cell resources
Solution Approach 2:
The patent adds a spatial dimension to the PUCCH repetition transmission by utilizing multiple cells simultaneously. The cell switching pattern enables transmissions to switch between different cells (e.g., primary cell and secondary cells), transforming a one-cell system into a multi-cell system that improves coverage without overloading a single cell's resources
2Reliability
If PUCCH repetition scheme allocates resources from a single cell, then transmission reliability is improved, but latency increases and overall transmission performance deteriorates
Solution Approach 1:
The patent segments the PUCCH repetition transmission across multiple cells using a cell switching pattern. This segmentation allows parallel transmission opportunities across different cells, reducing the time required to complete repetitions and thereby lowering latency while maintaining reliability
Solution Approach 2:
The cell switching pattern enables continuous and efficient utilization of uplink resources across multiple cells. By switching between cells according to a configured pattern, the system maintains continuous transmission opportunities without idle waiting, thereby reducing latency and improving overall transmission performance
Data Source
AI summary
A wireless communication method, including obtaining configuration information; and determining one or more PUCCH resources from at least two cells for a PUCCH transmission according to the configuration information, wherein the configuration information includes a PUCCH cell switching pattern configured for the at least two cells. A wireless communication method, including providing configuration information; and receiving, from user equipment, a PUCCH transmission transmitted on one or more PUCCH resources selected from at least two cells according to the configuration information, wherein the configuration information including a PUCCH cell switching pattern configured for the at least two cells.