TCI State Switching Across Remote Radio Heads With UE Tracking
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission configuration indicator (TCI) state switching across remote radio heads (RRHs), which can impact the performance and efficiency of user equipment (UE) communication.
Innovation Solution
The method involves adjusting the tracking of UE with respect to serving and next RRHs based on an indication of a TCI state switch, and generating and transmitting such indications between network entities and UE, utilizing processors and memory to facilitate seamless TCI state transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If TCI state switching is implemented across multiple RRHs to improve communication coverage and mobility support, then the adaptability and coverage area are improved, but the complexity of tracking and managing UE states increases
Solution Approach 1:
The patent segments the TCI state management by introducing separate indicators for different RRHs (serving RRH and next RRH). The UE maintains distinct tracking for each RRH's TCI state, allowing independent management of transmission configurations across multiple radio heads without overwhelming complexity in a single unified state machine.
Solution Approach 2:
The network entity provides advance indication of the upcoming TCI state switch from the serving RRH to the next RRH. This preliminary notification allows the UE to prepare for the transition in advance, adjusting its tracking mechanisms before the actual switch occurs, thereby reducing the complexity of handling sudden state changes.
2Reliability
If TCI state switching indication is provided to enable smooth transitions, then the reliability of communication during handover is improved, but the signaling overhead and message processing complexity increase
Solution Approach 1:
The indication mechanism is integrated into existing message structures used for RRH coordination and UE context management. Rather than creating entirely new signaling protocols, the patent reuses existing message formats to carry TCI state switch indications, thereby reducing the additional processing complexity while maintaining reliable handover support.
3Productivity
If the UE adjusts tracking based on TCI state switch indication, then the productivity and communication efficiency are improved, but the processing time and latency requirements increase
Solution Approach 1:
The network provides advance indication of the TCI state switch, allowing the UE to perform tracking adjustments before the actual handover event. This preliminary action enables the UE to pre-configure its reception parameters for the next RRH, reducing the processing time required during the actual transition and improving overall communication efficiency.
Data Source
AI summary
In some aspects, a user equipment (UE) may receive a message that includes an indication that a transmission configuration indicator (TCI) state switch for the UE is to be across a serving remote radio head (RRH) and a next RRH. The UE may adjust a tracking of the UE with respect to the serving RRH and the next RRH based at least in part on the indication. Numerous other aspects are described.