UE-Assisted Multi-TRP Coordination for Seamless Mobility
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Solution Overview
Problem
Existing wireless communication systems experience fluctuating signal-to-interference ratios due to independent signal transmissions from multiple base stations, leading to inter-cell interference and suboptimal handover procedures, which affect connectivity and throughput.
Innovation Solution
Implement a UE-assisted multi-TRP operation where user equipment reports connectivity information and decodes signals from multiple TRPs simultaneously, allowing collaborative signal transmission and resource reuse to reduce interference and enable seamless mobility without traditional cell identification and handover mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If independent signal transmissions from multiple base stations are used, then coverage area is expanded, but signal-to-interference ratio deteriorates due to inter-cell interference
Solution Approach 1:
The patent combines signals from multiple transmission reception points (TRPs) to serve a single user equipment (UE) simultaneously. Instead of independent transmissions causing interference, the system merges resources and coordinates transmissions across TRPs, transforming inter-cell interference into constructive signal superposition that improves reliability while maintaining expanded coverage.
2Reliability
If traditional handover mechanisms are used, then cell-specific connectivity is maintained, but connectivity interruption occurs during handover transitions
Solution Approach 1:
The system performs preliminary actions by establishing simultaneous connections to multiple TRPs before any handover is needed. The UE is configured with resources from multiple TRPs in advance, so when mobility is required, the transition is seamless without interruption because the target connection is already prepared and active.
Solution Approach 2:
The patent implements dynamic TRP selection and resource allocation based on real-time channel conditions and UE mobility. The system can dynamically switch between single-TRP and multi-TRP modes, adjusting the number of serving TRPs and their resource allocations according to current network conditions, thereby eliminating fixed handover boundaries.
3Productivity
If multiple TRPs transmit signals simultaneously on same resources, then resource utilization improves, but inter-TRP interference increases
Solution Approach 1:
The patent converts the potentially harmful inter-TRP interference into a beneficial effect by coordinating transmissions so that signals from multiple TRPs constructively superpose at the UE. The system transforms what would normally be interference into enhanced signal strength through careful resource coordination and beamforming across TRPs.
Solution Approach 2:
The system employs feedback mechanisms where the UE reports channel state information and connectivity measurements to the network. Based on this feedback, the network dynamically adjusts resource allocations and transmission parameters across multiple TRPs to optimize resource utilization while minimizing any residual interference through coordinated beamforming and power control.
Data Source
AI summary
A user equipment, UE, is configured for operating in a wireless communication network that utilizes resources of a time/frequency grid. The UE is adapted to report to the wireless communication network a connectivity information associated to a first connectivity option of the UE to the wireless communication network and associated to a second connectivity option of the UE to the wireless communication network; and/or is adapted to receive, during a same instance of time, and decode a first signal received from a first transmission/reception point, TRP, and a second signal received from a second TRP, the first signal and the second signal occupying resources in the same time/frequency grid.