Uplink CoMP Resource Allocation via UE Beam Capability Reporting
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Solution Overview
Problem
Current wireless communication systems face challenges in achieving efficient resource allocation and diversity gain, especially in poor channel environments, particularly for user equipment using phase array antennas and multi-beams in uplink coordinated multi-point (CoMP) scenarios.
Innovation Solution
The method involves transmitting user equipment capability information, including beam information, to primary and secondary transmission reception points (TRPs), allowing for resource allocation based on the use of phase array antennas and multi-beams, enabling efficient data transmission and reception across multiple TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment transmits data to multiple TRPs in uplink CoMP, then diversity gain and reliability are improved, but resource allocation complexity and system overhead increase
Solution Approach 1:
The patent segments the uplink data transmission by dividing it into multiple independent transmissions to different TRPs. Each TRP receives and processes data independently, allowing the system to achieve diversity gain while maintaining manageable resource allocation at each individual TRP through capability-based resource allocation
Solution Approach 2:
The patent performs preliminary action by having user equipment report capability information (including PAA and multi-beam support) before actual data transmission. This advance reporting allows the network to pre-configure appropriate resource allocation strategies and TRP selections, reducing real-time allocation complexity
2Reliability
If user equipment uses phase array antenna and multi-beams, then beamforming performance and signal quality are improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent implements dynamic beam management where the user equipment can adaptively switch between different beamforming modes (PAA, multi-beam, or conventional) based on channel conditions and capability reporting. This dynamic approach allows the system to achieve high signal quality when needed while reducing complexity in favorable conditions
Solution Approach 2:
The patent changes the operational parameters of the user equipment by allowing flexible switching between different antenna configurations and beamforming techniques. The capability information mechanism enables parameter optimization where the equipment can use advanced features like PAA and multi-beams only when beneficial, otherwise operating in simpler modes
3Measurement precision
If capability information including beam information is reported, then resource allocation accuracy is improved, but uplink signaling overhead increases
Solution Approach 1:
The patent applies partial action by having user equipment report only the necessary capability information (presence/absence of PAA and multi-beam support) rather than complete detailed beam parameters. This selective reporting provides sufficient accuracy for resource allocation while minimizing signaling overhead
Data Source
AI summary
Disclosed herein are a method for operating a uplink CoMP and a device using the same. As an example of the present disclosure, a method for operating a user equipment in a wireless communication system may include transmitting, by the user equipment, user equipment capability information to a primary-transmission reception point (TRP), receiving, by the user equipment, a radio resource control (RRC) reconfiguration request message from the primary-TRP, and transmitting, by the user equipment, data to the primary-TRP and a secondary-TRP. Herein, the user equipment capability information may include beam information of the user equipment, and the beam information of the user equipment may include information regarding whether or not the user equipment uses at least one of a phase array antenna (PAA) and multi-beams. Resources of the primary-TRP and the secondary-TRP may be allocated based on the beam information of the user equipment.