Dynamic PUCCH Resource Allocation in CoMP Systems
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Solution Overview
Problem
In CoMP systems, the existing methods for uplink channel transmission result in high signaling overhead and unnecessary power consumption due to inefficient resource allocation and interference between cells.
Innovation Solution
A method where a central controller distinguishes radio resources for uplink control channel transmission in each cell and indicates the target Reception Point to the terminal, allowing it to adjust transmission power and minimize interference by using dedicated CSI-RS indicators for each cell, thereby optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing methods for uplink channel transmission are used in CoMP systems, then resource allocation can be performed, but signaling overhead increases and power consumption increases due to inefficient resource allocation and interference between cells
Solution Approach 1:
The patent segments the uplink control channel resources by introducing cell-specific PUCCH resource allocations and distinguishing between serving cell and neighbor cell uplink control channels. This segmentation allows efficient resource management in CoMP systems by preventing interference between cells while reducing overall signaling overhead through targeted resource assignment.
2Productivity
If existing methods for uplink channel transmission are used in CoMP systems, then resource allocation can be performed, but signaling overhead increases due to inefficient resource allocation and interference between cells
Solution Approach 1:
The patent segments the uplink control channel resources by introducing cell-specific PUCCH resource allocations and distinguishing between serving cell and neighbor cell uplink control channels. This segmentation allows efficient resource management in CoMP systems by preventing interference between cells while reducing overall signaling overhead through targeted resource assignment.
Solution Approach 2:
The patent applies local quality by configuring different PUCCH resource parameters (such as frequency shift values, resource block assignments, and cyclic shift values) specific to each cell involved in CoMP operations. This allows each cell to have optimized local resource characteristics that reduce interference and minimize the signaling overhead required for resource coordination.
3Reliability
If a terminal transmits uplink control channels to multiple reception points in CoMP, then coverage is improved, but interference between cells increases
Solution Approach 1:
The patent applies local quality by configuring different PUCCH resource parameters (such as frequency shift values, resource block assignments, and cyclic shift values) specific to each cell involved in CoMP operations. This allows each cell to have optimized local resource characteristics that reduce interference and minimize the signaling overhead required for resource coordination.
Solution Approach 2:
The patent converts the potential harm of inter-cell interference into a benefit by using coordinated resource allocation where neighbor cells are configured with orthogonal or quasi-orthogonal PUCCH resources. This transforms what would be interfering signals into useful diversity signals that can be received by multiple reception points, improving reliability while maintaining low interference levels.
Data Source
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AI summary
The present invention relates to a method for transmitting an uplink channel in a wireless communication system. The method for transmitting an uplink channel of a terminal according to one embodiment of the present invention may comprise the steps of: receiving a downlink control message; extracting the starting point of a dynamic physical uplink control channel (PUCCH) resource region from the downlink control message; and transmitting an uplink channel according to the starting point of the extracted dynamic PUCCH resource region. An embodiment of the invention exhibits effects in reducing the signaling overhead, and preventing the terminal from unnecessarily consuming power, when transmitting the uplink channel in a CoMP system.