CoMP Set Handoff via SINR Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional handoff methods in CoMP systems are inefficient, particularly in managing handoffs between multiple base stations, leading to suboptimal performance and increased scheduling overhead, as they primarily focus on single-base station handoffs and lack a defined method for selecting the appropriate CoMP scheme based on the user equipment's resource allocation state.
Innovation Solution
A method for performing handoff between CoMP sets by measuring the signal-to-interference-plus-noise ratio (SINR) of each CoMP set and transmitting this information to a serving base station, allowing the user equipment to select an optimal CoMP set for simultaneous signal reception and improve handoff efficiency within a CoMP cluster.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional handoff methods are used in CoMP systems, then handoff between single base stations can be performed, but handoff efficiency between multiple base stations deteriorates and scheduling overhead increases
Solution Approach 1:
The patent segments the CoMP cluster into multiple CoMP sets, where each set contains a subset of base stations. The user equipment measures SINR for each CoMP set independently and reports measurements to the serving base station. This segmentation allows handoff to be performed at the CoMP set level rather than individual base station level, improving handoff efficiency while reducing scheduling overhead through hierarchical management.
Solution Approach 2:
The patent implements dynamic CoMP set configuration where the composition of CoMP sets can be adjusted based on user equipment movement and channel conditions. The serving base station determines the optimal CoMP set based on reported SINR measurements and resource allocation state, enabling adaptive handoff decisions that improve efficiency while managing complexity through dynamic reconfiguration rather than static scheduling.
2Power
If CoMP sets are constituted to improve communication performance, then data rates increase, but the complexity of managing multiple base station combinations increases
Solution Approach 1:
The patent applies partial action by forming multiple CoMP sets where each set includes only a subset of the total base stations in the cluster. Rather than managing all possible base station combinations, the system creates a manageable number of CoMP sets (e.g., first CoMP set with BS1 and BS2, second CoMP set with BS2 and BS3). The user equipment measures SINR for each CoMP set and reports to the serving base station, which determines the optimal set based on resource allocation state, thus achieving improved data rates while controlling management complexity.
Data Source
AI summary
Disclosed is a method for performing a handoff in a CoMP cluster. A user equipment measures a signal to interference-plus-noise ratio (SINR) value of each of the CoMP sets constituted by the combination of a plurality of base stations in one CoMP cluster. Then, the user equipment transmits the SINR value of each of the CoMP sets to a serving base station through a pilot strength measurement message (PSMM). Subsequently, the user equipment receives, from the serving base station, a message which instructs a handoff determined through the transmitted signal to interference-plus-noise ratio (SINR) values.