CoMP eNB Interference Management via Centralized Controller
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Solution Overview
Problem
In conventional cellular mobile communication systems, UEs located near cell boundaries experience significant interference from adjacent cells, limiting their ability to achieve high data transmission rates, as existing systems do not efficiently manage interference and channel information across multiple eNBs in CoMP scenarios.
Innovation Solution
A method and apparatus that enable eNBs to exchange cooperative information, generate CSI-RS/IMR, and allocate resources to UEs, allowing them to measure multiple CSI-RS and IMR, thereby facilitating efficient CoMP communication by dynamically selecting cells and adjusting resource allocation to improve data transmission rates for UEs at cell boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cellular communication systems operate independently in each cell, then system implementation is simple, but UEs at cell boundaries experience significant interference and cannot achieve high data transmission rates
Solution Approach 1:
The patent merges multiple eNBs into a cooperative communication system where they jointly serve UEs at cell boundaries. Multiple eNBs coordinate their transmission to provide combined signal strength and reduce interference, transforming independent cell operations into a unified cooperative system that improves data transmission rates for boundary UEs.
Solution Approach 2:
The patent introduces a centralized controller as an intermediary that manages information exchange between eNBs. This controller coordinates channel state information, interference data, and resource allocation across multiple eNBs, enabling them to work together to reduce boundary interference while maintaining system simplicity through centralized management.
2Productivity
If multiple eNBs cooperate in CoMP communication, then data transmission rates for all UEs improve, but system complexity increases due to information exchange requirements
Solution Approach 1:
The centralized controller serves as an intermediary that simplifies the complexity of multi-eNB coordination. It centralizes the collection and processing of channel state information and interference data from multiple eNBs, then distributes coordinated transmission parameters back to them, reducing the complexity burden on individual eNBs while enabling cooperative communication.
Solution Approach 2:
The patent implements feedback mechanisms where UEs report channel state information to eNBs, and eNBs exchange interference and channel information through the centralized controller. This feedback loop enables dynamic adaptation of transmission parameters to optimize data rates while managing system complexity through structured information flow.
3Reliability
If eNBs exchange detailed channel and interference information, then cooperative communication performance improves, but information exchange overhead increases
Solution Approach 1:
The patent extracts only the essential information elements needed for cooperative communication—specifically channel state information and interference data—rather than exchanging complete system state information. This selective extraction reduces information exchange overhead while maintaining the reliability needed for effective CoMP operations.
Solution Approach 2:
The patent changes the parameters being exchanged by focusing on specific channel and interference metrics rather than comprehensive system parameters. This parameter optimization reduces the volume of information exchanged between eNBs and the controller while preserving the critical data needed for high-performance cooperative communication.
Data Source
AI summary
A method and apparatus are provided for supporting a CoMP communication by an eNB of a mobile communication system. The method includes: receiving a channel measurement report relating to at least one transmission channel from a UE; and transmitting channel feedback information including information of interference with surrounding eNBs performing the CoMP communication on the at least one transmission channel, to a central controller, based on the received channel measurement report. In the method, adjacent cells can cooperate to transmit data through a CoMP transmission for a UE located in a cell boundary area in a cellular mobile communication system.