Uplink Synchronization via Neighbor Timing Advance
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Solution Overview
Problem
In communication systems, terminals often disconnect from networks due to poor signal strength or delayed timing advance (TA) updates, leading to disconnection and idle state transitions, which disrupt network connectivity and resource allocation.
Innovation Solution
A method where a first terminal acquires and uses the timing advance (TA) shared by a second terminal within a specific range to maintain uplink synchronization with a base station when it fails to receive a timely TA update, ensuring continuous network connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal relies on receiving TA from the base station to maintain uplink synchronization, then the uplink synchronization can be maintained under normal signal conditions, but the terminal will disconnect and turn to idle state when signal strength is poor or TA is not sent in time
Solution Approach 1:
The patent introduces a intermediary mechanism where terminals share TA information with each other through pre-configured resources. When a terminal cannot receive TA from the base station, it can obtain TA from neighboring terminals, thus mediating the connection between the terminal and base station synchronization requirement.
Solution Approach 2:
The patent implements preliminary action by pre-configuring resources for TA sharing between terminals before actual synchronization issues occur. Terminals are pre-equipped with the capability to share and use TA information from neighboring terminals, so when base station TA updates fail, the terminals can immediately switch to using shared TA without complex real-time decision-making.
2Reliability
If the terminal disconnects to idle state when TA is not received in time, then the terminal protects itself from using outdated synchronization information, but network connectivity is disrupted and resources are released
Solution Approach 1:
The patent applies beforehand cushioning by establishing a backup TA sharing mechanism in advance. When the primary TA source (base station) fails to provide timely updates, the pre-configured TA sharing capability acts as a cushion to prevent terminal disconnection, maintaining network connectivity without compromising synchronization accuracy significantly.
Solution Approach 2:
The patent implements feedback mechanisms where terminals monitor whether they have received TA from the base station within the expected time window. When TA is not received, terminals provide feedback by switching to use shared TA from neighboring terminals, and this state information can be fed back to the base station for further coordination.
3Productivity
If the terminal uses shared TA from neighboring terminals, then network connectivity can be maintained under poor signal conditions, but additional complexity is introduced in TA acquisition and management
Solution Approach 1:
The patent applies self-service principle where terminals autonomously acquire and use shared TA information from neighboring terminals without requiring complex centralized coordination. Each terminal independently monitors its synchronization status, detects when base station TA is unavailable, and automatically switches to using shared TA from pre-configured neighboring terminals.
Solution Approach 2:
The patent merges the TA acquisition functions by combining the base station's TA distribution mechanism with terminal-to-terminal TA sharing. Instead of relying solely on the base station, the system merges multiple TA sources (base station and neighboring terminals) into a unified synchronization approach, reducing the impact of single-point failures.
Data Source
AI summary
The present disclosure relates to an uplink synchronization method, a terminal device, and a storage medium. The first terminal includes a memory and a processor; the memory stores a computer program; the computer program is executable by the processor to cause the processor to: acquire a timing advance (TA) shared by a second terminal to the first terminal, the second terminal and the first terminal access a same cell, and the second terminal is located within a first range around the first terminal; and perform an uplink synchronization with a base station using the TA shared by the second terminal, in response to the first terminal failing to receive a TA sent by the base station in time.