Signaling Virtual Cell ID Subsets for CoMP Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, especially in heterogeneous environments, efficient signaling of virtual cell IDs is challenging due to interference and resource management issues, which affect the performance of CoMP operations and user equipment (UE) communication.
Innovation Solution
A serving base station identifies and groups virtual cell IDs into subsets based on primary cell IDs and channel state information (CSI) resources, then transmits these subsets to the UE, optimizing the signaling process to improve interference mitigation and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all virtual cell IDs are signaled to the UE for blind detection, then the UE can detect and mitigate all interfering signals, but the signaling overhead and processing complexity increase significantly
Solution Approach 1:
The patent segments the complete set of virtual cell IDs into multiple subsets based on CoMP clusters and CSI resources. Each subset corresponds to a specific transmission scenario, allowing the UE to process only relevant subsets rather than all possible virtual cell IDs. This segmentation reduces signaling overhead and processing complexity while maintaining interference mitigation capability for active transmission points.
Solution Approach 2:
The patent applies local quality by providing different virtual cell ID subsets to different UEs based on their specific locations, serving CoMP clusters, and channel conditions. Each UE receives customized subsets relevant to its local transmission environment, optimizing the balance between interference mitigation performance and processing requirements for each user.
2Productivity
If virtual cell ID subsets are grouped by primary cell ID and CSI resources, then the signaling efficiency improves, but the system requires more sophisticated grouping and management mechanisms
Solution Approach 1:
The patent segments virtual cell IDs into subsets organized by primary cell ID and CSI resource associations. This structured segmentation enables efficient signaling by grouping related virtual cell IDs together, allowing the network to signal only the relevant subsets for each UE's active CoMP clusters rather than transmitting all possible virtual cell IDs.
Solution Approach 2:
The patent performs preliminary grouping of virtual cell IDs by primary cell ID and CSI resources before signaling to UEs. This advance organization allows the network to pre-process and filter virtual cell ID sets based on which CoMP clusters are actively serving which UEs, reducing the signaling burden during actual data transmission.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An efficient signaling of virtual cell identifier (ID) sets by base stations is disclosed. A serving base station identifies a set of virtual cell IDs of transmission points from a coordinated multipoint (CoMP) cluster in which a served user equipment (UE) is located along with neighboring transmission points of neighboring CoMP clusters. The serving base station groups the virtual cell IDs available for use in transmission into subsets of virtual cell IDs either according to the primary cell IDs associated with each virtual cell ID or according to the channel state information (CSI) resources associated with each primary cell ID and then transmits each of the subsets of virtual cell IDs to the UE.