CoMP Resource Block Segmentation for Multi-User Wireless Systems
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Solution Overview
Problem
The existing CoMP technology faces challenges in resource utilization across multiple cells, leading to restricted throughput and increased hardware complexity, power consumption, especially when implementing multi-user CoMP (MU-CoMP) for multiple UEs, as each UE must decode traffic intended for others, causing interference and resource inefficiency.
Innovation Solution
The method involves dividing a basic resource allocation unit, such as a resource block, into segments in the frequency, time, or code domain based on the number of UEs at the boundary between cells, allowing for efficient allocation and transmission of signals to multiple UEs using CoMP, thereby optimizing resource utilization and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CoMP transmission is implemented to improve throughput at cell edge, then system throughput is improved, but resource utilization is restricted across multiple cells
Solution Approach 1:
The patent divides the basic resource allocation unit (resource block) into multiple segments in the frequency, time, or code domain. This segmentation allows different segments to be allocated to different UEs in a coordinated manner across multiple cells, enabling more efficient resource utilization while maintaining CoMP transmission benefits for cell edge users.
2Productivity
If multi-user CoMP (MU-CoMP) is implemented to support multiple UEs, then system capacity is improved, but hardware complexity and power consumption increase as each UE must decode traffic for other UEs
Solution Approach 1:
By segmenting resource blocks and allocating specific segments to specific UEs, the patent reduces the decoding burden on each UE. Instead of decoding all traffic from multiple cells, each UE only needs to decode its allocated segment, significantly reducing hardware complexity and power consumption while maintaining MU-CoMP capacity benefits.
Solution Approach 2:
The patent applies different resource allocation strategies to different UEs based on their channel conditions and locations. Cell edge UEs benefit from CoMP transmission while other UEs use conventional allocation, optimizing the balance between system capacity and individual UE complexity requirements.
3Reliability
If each UE decodes traffic for all UEs in MU-CoMP, then interference management is improved, but power consumption increases
Solution Approach 1:
The segmentation of resource blocks allows each UE to focus decoding efforts only on its allocated segment rather than all segments from multiple cells. This maintains interference management effectiveness within the allocated segment while dramatically reducing the computational power required.
4Ease of manufacture
If basic resource allocation units are used without division, then allocation simplicity is maintained, but resource waste increases in multi-cell CoMP operations
Solution Approach 1:
The patent segments basic resource allocation units into smaller sub-allocation units that can be precisely assigned to different UEs across multiple cells. This eliminates resource waste by avoiding the need to allocate entire resource blocks when only partial resources are needed, while maintaining manageable allocation complexity through standardized segmentation rules.
Data Source
AI summary
A method for transmitting a signal to a UE by a BS in a wireless communication system is disclosed. The method includes determining a signal transmission scheme for transmitting a signal to the UE, dividing a basic resource allocation unit, if the signal transmission scheme is CoMP transmission, allocating transmission resources to the UE using the divided basic resource allocation unit, and transmitting the signal to the UE through the allocated transmission resources.