CoMP Cooperating Set Establishment via Preliminary Candidate Selection
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Solution Overview
Problem
The challenge in CoMP communication is to establish a CoMP cooperating set efficiently, reducing delay and system overhead while ensuring smooth information exchanges among cells and eNodeBs, which is crucial for coordinated multi-points joint transmission.
Innovation Solution
A method is proposed that involves configuring a measurement set, channel state information measurement, and a coordinated process to determine and establish a CoMP cooperating set through specific steps and information exchanges using the LTE X2 interface, including a CCS establishment request and response process among eNodeBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CoMP cooperating set establishment involves extensive information exchanges among cells, eNodeBs and UEs, then the CoMP communication can be properly established, but the delay and system overhead increase significantly
Solution Approach 1:
The patent applies preliminary action by having the serving eNodeB pre-determine the candidate CoMP cooperating set based on UE measurement results before initiating the full CoMP establishment process. This preliminary determination reduces the scope of subsequent information exchanges, as only the determined candidate set needs to be confirmed with other eNodeBs rather than evaluating all possible cooperating cells
Solution Approach 2:
The patent segments the CoMP establishment process into distinct phases: (1) UE measurement and feedback, (2) serving eNodeB candidate set determination, (3) confirmation with candidate eNodeBs, and (4) final CoMP set establishment. This segmentation allows each phase to focus on specific tasks with minimized information exchange requirements
2Reliability
If CoMP cooperating set establishment involves extensive information exchanges among cells, eNodeBs and UEs, then the CoMP communication can be properly established, but the system overhead and complexity increase significantly
Solution Approach 1:
The patent extracts and isolates the critical information exchange requirements from the overall CoMP establishment process. By identifying and removing unnecessary information exchange steps while retaining only the essential confirmations between serving eNodeB and candidate eNodeBs, the system overhead is significantly reduced
Solution Approach 2:
The serving eNodeB performs preliminary determination of the candidate CoMP cooperating set using UE measurement results before initiating detailed information exchanges. This preliminary action filters out unnecessary candidates early, reducing the complexity of subsequent coordination steps
Data Source
AI summary
Disclosed is a method for establishing a CoMP cooperating set in coordinated multi-point communication, the method comprising the steps of: triggering and starting a coordinated multi-point communication process; according to channel state information of all cells in a measurement cell set measured by a UE, determining a candidate CoMP cooperating set; sending a CoMP cooperating set establishment request to eNodeBs of the cooperating cells in the determined candidate CoMP cooperating set; the eNodeBs being of the cooperating cell and receiving the CoMP cooperating set establishment request responding to the CoMP cooperating set establishment request to the eNodeB of the serving cell of the UE, and sending a CoMP cooperating set establishment response to the eNodeB of the serving cell of the UE; the eNodeB of the serving cell of the UE determining a CoMP cooperating set of the UE according to information of the CoMP cooperating set establishment response; and according to a coordinated multi-point communication mode, sharing data information and service bearer information of the UE of the CoMP cooperating set. The present invention guarantees coordinated multi-point joint transmission/reception, decreases the overhead and complexity of the communication system and furthermore reduces the time delay in the information exchange.