Timing Advance Update for Non-Serving Cell Mobility
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Solution Overview
Problem
Current wireless communication systems face challenges in reducing latency and conserving computing resources during inter-cell mobility operations due to the lack of timing advance information for non-serving cells, leading to delays and increased latency.
Innovation Solution
The method involves determining and transmitting timing advance information for non-serving cells using procedures such as random access channel, reference signal, and synchronization signal block processes, allowing user equipment to perform Layer 1 or Layer 2-based inter-cell mobility operations without connecting to the non-serving cell, thereby reducing latency and conserving resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If timing advance information is obtained only through connection to non-serving cells, then timing advance accuracy is improved, but latency and computing resource consumption increase
Solution Approach 1:
The patent applies preliminary action by obtaining timing advance information for non-serving cells in advance through network transmission before actual inter-cell mobility operations occur. This allows the UE to have timing advance information ready beforehand, eliminating the need to establish connections with non-serving cells during mobility operations, thus reducing latency while maintaining timing advance accuracy.
2Measurement precision
If timing advance information is obtained only through connection to non-serving cells, then timing advance accuracy is improved, but computing resource consumption increases
Solution Approach 1:
The patent applies preliminary action by having the network transmit timing advance information for non-serving cells in advance. This eliminates the need for the UE to perform computationally intensive measurements and calculations during inter-cell mobility operations, significantly reducing computing resource consumption while maintaining timing advance accuracy.
Solution Approach 2:
The patent introduces the network as an intermediary that provides timing advance information for non-serving cells. Instead of the UE directly obtaining timing advance information through complex interactions with non-serving cells, the network acts as a mediator that pre-acquires and distributes this information, reducing the computational burden on the UE.
3Reliability
If traditional inter-cell mobility procedures are used, then connection reliability is improved, but operation speed decreases
Solution Approach 1:
The patent applies preliminary action by preparing timing advance information in advance through network transmission. This allows inter-cell mobility operations to proceed without the time-consuming steps of establishing connections with non-serving cells, thereby increasing operation speed while maintaining connection reliability through the use of pre-obtained accurate timing advance information.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive or determine information indicating a timing advance for a non-serving cell of the UE, and perform an inter-cell mobility operation based at least in part on the timing advance for the non-serving cell of the UE. Numerous other aspects are provided.