Synchronization Cell Indicator for Wireless UE Timing
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Solution Overview
Problem
In wireless communication systems, synchronization between user equipment (UE) and cells is often unsatisfactory in terms of accuracy, power consumption, complexity, and time duration, which can hinder data transmission and cell-directed actions.
Innovation Solution
The concept of a synchronization cell and synchronization cell indicator (SCI) is introduced, where the network identifies a suitable synchronization cell for UE to synchronize with, allowing UE to perform cell-directed actions with a target cell using synchronization parameters from the SCI, potentially improving synchronization accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UE performs traditional synchronization with target cell, then synchronization accuracy can be maintained, but time duration and complexity increase
Solution Approach 1:
The patent introduces a synchronization cell as an intermediary entity that provides synchronization signals to the UE. Instead of directly synchronizing with the target cell, the UE first acquires synchronization from the synchronization cell (which has already been synchronized to the target cell), thereby reducing the time duration and complexity of the synchronization process while maintaining accuracy through the chain of synchronization.
2Reliability
If UE performs traditional synchronization with target cell, then synchronization can be achieved, but power consumption increases
Solution Approach 1:
The synchronization cell performs preliminary synchronization actions with the target cell in advance, establishing the synchronization relationship before the UE needs to access the target cell. This preliminary action allows the UE to inherit synchronization information without performing energy-intensive synchronization procedures, thereby reducing power consumption while maintaining reliability.
3Device complexity
If UE performs cell-directed actions without proper synchronization, then complexity and time duration are reduced, but accuracy of data transmission and measurement deteriorates
Solution Approach 1:
The synchronization cell acts as a mediator that provides pre-processed synchronization information to the UE. This intermediary approach allows the UE to perform cell-directed actions with reduced complexity (by using the synchronization information from the synchronization cell) while maintaining measurement precision and data transmission accuracy (through the inherited synchronization relationship with the target cell).
Data Source
AI summary
Provided is a synchronization cell used in a wireless communication system. Also provided is an SCI, synchronization cell indicator. A mobile network includes a processor that identifies one or more suitable synchronization cells for a user equipment (UE) and sends the SCI to the UE so that the UE can at least partially synchronize with a synchronization cell. The SCI advantageously includes a cell-id and other synchronization parameters and characteristics in various embodiments. The SCI may include a cell-directed UE action for the UE to carry out with a target cell. The UE carries out cell-directed UE actions with the target cell either after having obtained synchronization with the synchronization cell or to continue the synchronization process.