Multi-TRP Data Channel Reception Using CRS Pattern Rate Matching
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Solution Overview
Problem
The existing wireless communication systems face challenges in managing interference between transmission and reception points (TRPs) and efficiently transmitting and receiving data channels due to the explosive increase in data traffic and user demands for higher speed services.
Innovation Solution
The method involves configuring multiple control resource set groups and applying a cell reference signal (CRS) pattern to receive and transmit data channels, utilizing coordination between transmission and reception points to manage interference and enhance data channel reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple control resource set groups are configured in UE to support multi-TRP operations, then the system can handle explosive data traffic and provide higher speed services, but interference between DMRS and data channels increases
Solution Approach 1:
The patent divides control resources into multiple control resource set groups (first and second groups) associated with different TRPs. Each group has its own DMRS and data channels, allowing independent management and reducing interference through spatial separation of control and data resources across multiple TRPs.
Solution Approach 2:
The patent introduces a new dimension by mapping DMRS to specific resource elements within control resource sets and establishing rate matching relationships between DMRS and data channels. This dimensional organization allows systematic allocation of resources to avoid overlap and reduce interference while maintaining high data traffic capacity.
2Reliability
If rate matching is applied to resource elements of cell reference signal according to CRS pattern, then data channel reception reliability improves, but system complexity increases
Solution Approach 1:
The patent applies rate matching by changing the parameter of resource element allocation based on CRS pattern. The UE determines which resource elements to puncture or skip in the data channel based on the CRS pattern, effectively adjusting the data channel structure to avoid interference with DMRS while maintaining reception reliability.
3Speed
If multi-TRP coordinated transmission is implemented to handle explosive data traffic, then user data rate increases dramatically, but interference management becomes more difficult
Solution Approach 1:
The patent segments the multi-TRP transmission system into distinct first and second TRPs, each with dedicated control resource set groups. This segmentation allows independent rate matching and interference management for each TRP while maintaining coordinated transmission capabilities to achieve dramatic user data rate increases.
Data Source
AI summary
Disclosed in the present invention are a method for transmitting and receiving data in a wireless communication system, and a device for same. Specifically, a method, by which a terminal receives a data channel in a wireless communication system, may include: a step for receiving control resource setting information based on a first control resource set group and a second control resource set group; a step for receiving information about a cell reference signal pattern related to one among the first control resource set group and the second control resource set group; and a step for receiving i) a first data channel related to the first control resource set group and ii) a second data channel related to the second control resource set group, on the basis of the cell reference signal pattern.