CoMP Coordination Set Determination via Path Loss Difference
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Solution Overview
Problem
Existing CoMP technologies select coordination cells primarily based on signal strength, neglecting interference factors, which leads to suboptimal performance and reduced interference suppression gain.
Innovation Solution
A method and apparatus for determining a CoMP coordination set that considers interference suppression by using CoMP resource block information to identify and select coordination cells that minimize interference, thereby enhancing system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If coordination cells are selected based solely on signal strength difference, then the CoMP coordination set can be determined simply, but the interference suppression gain is reduced
Solution Approach 1:
The patent changes the selection parameter from signal strength difference to path loss difference. By using path loss difference as the criterion for coordinating cell selection, the system achieves both simplicity in determination and improved interference suppression gain, resolving the contradiction between ease of operation and reliability
Solution Approach 2:
The patent converts the harmful effect of interference into a beneficial selection criterion. By selecting coordinating cells based on path loss difference (which reflects interference characteristics), the system turns the interference factor from a negative influence into a positive selection guide, thereby improving interference suppression gain while maintaining determination simplicity
2Reliability
If coordination cells are selected considering both signal strength and interference, then the interference suppression gain is improved, but the determination complexity increases
Solution Approach 1:
The patent simplifies the determination process by changing to a single parameter (path loss difference) that inherently captures interference characteristics. This avoids the need to simultaneously consider multiple parameters like signal strength and interference, thereby improving interference suppression gain without increasing determination complexity
Solution Approach 2:
The patent extracts the interference consideration from a complex multi-parameter evaluation and encapsulates it into the path loss difference metric. By taking out interference as a separate, measurable factor (path loss), the system achieves improved interference suppression while maintaining simple determination logic
Data Source
AI summary
Embodiments of the present invention provide a method and an apparatus for determining a coordinated multi-point transmission/reception CoMP coordination set, which can increase an interference suppression gain during CoMP. The method includes: receiving, by a first cell, CoMP resource block information of a second cell sent by the second cell, where the CoMP resource block information of the second cell indicates a CoMP resource block of the second cell; obtaining, by the first cell, a CoMP coordination set of each CoMP resource block of the first cell according to CoMP resource blocks of the first cell and the CoMP resource blocks of the second cell; and determining, by the first cell, that a union set of CoMP coordination sets of all the CoMP resource blocks of the first cell is a CoMP coordination set of the first cell.