TRP Pairing Indication for Full-Duplex Multi-TRP Interference Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing simultaneous uplink and downlink communications with multiple transmit receive points (TRPs), leading to interference and suboptimal resource utilization.
Innovation Solution
A method and apparatus for TRP pairing indication that enables UEs to identify and report candidate TRPs capable of full-duplex or simultaneous half-duplex multi-TRP communication modes, allowing for optimized pairing configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If simultaneous uplink and downlink communication with multiple TRPs is implemented, then spectral efficiency and resource utilization are improved, but interference between uplink and downlink signals increases
Solution Approach 1:
The patent segments the TRP set into multiple subsets, where each subset contains TRPs that can simultaneously communicate with the UE in full-duplex or simultaneous half-duplex mode. This segmentation allows the system to organize TRPs into groups that minimize interference while maximizing spectral efficiency, resolving the contradiction between improved productivity and increased interference.
Solution Approach 2:
The patent introduces TRP pairing indication information as an intermediary mechanism that provides feedback about which TRPs can be paired for simultaneous communication. This intermediary information enables the system to coordinate uplink and downlink communications across multiple TRPs while managing interference through informed pairing decisions, thus improving spectral efficiency without excessive interference.
2Loss of time
If multiple TRPs are used for simultaneous communication, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent performs preliminary actions by determining TRP pairing capabilities and generating TRP pairing indication information before actual simultaneous communication occurs. This advance preparation of pairing information simplifies the communication management process by pre-identifying compatible TRP combinations, thereby reducing the complexity of coordinating multiple TRPs while enabling low-latency simultaneous communication.
Solution Approach 2:
The patent implements a feedback mechanism where TRP pairing indication information is provided based on measurements and capabilities of multiple TRPs. This feedback loop allows the system to adaptively select optimal TRP pairs for simultaneous communication, reducing latency through efficient resource utilization while managing complexity through data-driven decision-making rather than exhaustive coordination.
3Productivity
If TRP pairing capability is determined for all TRPs, then communication optimization is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the necessary TRP pairing indication information needed for optimal simultaneous communication rather than transmitting all possible TRP combination data. By taking out only the essential pairing capabilities and indications, the system achieves communication optimization through informed TRP selection while minimizing signaling overhead by avoiding transmission of redundant information.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive one or more transmit receive point (TRP) pairing indications, wherein the one or more TRP pairing indications identify one or more TRPs that have a capability to be paired with one or more neighbor TRPs in a full-duplex communication mode or one or more TRPs that have a capability to be paired with one or more neighbor TRPs in a simultaneous half-duplex multi-TRP (mTRP) communication mode. The UE may transmit, to a base station, a report indicating at least one candidate TRP to be paired in the full-duplex communication mode or the simultaneous half-duplex mTRP communication mode based at least in part on the one or more TRP pairing indications. Numerous other aspects are provided.