Terminal Device Synchronization Control for D2D Communication
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Solution Overview
Problem
In device-to-device (D2D) communication, terminals face challenges in synchronizing effectively due to varying synchronization signals, which affects the efficiency of radio access network resources and processing loads, particularly with the increasing demand for streaming data.
Innovation Solution
A terminal device is equipped with a synchronization processing unit and a control unit that monitor and control the synchronization state based on the transmission path of synchronization signals, allowing for differentiated synchronization control according to the monitoring results, thereby prioritizing synchronization signals from base stations over those from terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminals perform D2D communication with differentiated synchronization control based on transmission path, then synchronization efficiency and resource utilization improve, but system complexity and control overhead increase
Solution Approach 1:
The patent segments synchronization control into different modes based on transmission path: in-coverage terminals use base station synchronization signals, while out-of-coverage terminals use terminal-generated synchronization signals. This segmentation allows optimized control for each scenario without requiring complex unified control mechanisms.
Solution Approach 2:
The patent establishes synchronization relationships in advance by categorizing terminals as in-coverage or out-of-coverage before D2D communication begins. This preliminary classification enables pre-configured synchronization behavior, avoiding real-time complex decision-making during communication.
2Reliability
If terminals monitor synchronization state continuously with differentiated control, then synchronization reliability improves, but processing load and energy consumption increase
Solution Approach 1:
The patent implements dynamic monitoring where in-coverage terminals monitor base station synchronization signals with lower intensity, while out-of-coverage terminals perform more frequent monitoring of terminal-generated signals. This dynamic adjustment matches monitoring effort to actual synchronization needs, reducing unnecessary energy consumption.
Solution Approach 2:
Out-of-coverage terminals autonomously generate and monitor their own synchronization signals without requiring continuous base station intervention. This self-service mechanism ensures synchronization reliability while reducing the processing load on network infrastructure.
Data Source
AI summary
[Object] To provide a mechanism that makes it possible to perform synchronization control that is different in accordance with synchronization signals.[Solution] There is provided a terminal device including: a synchronization processing unit configured to perform synchronization processing on the basis of a synchronization signal for radio communication; and a control unit configured to control a monitoring period of a synchronization state of the synchronization signal in accordance with a transmission path of the synchronization signal that is subjected to the synchronization processing, and to control processing that is different in accordance with a monitoring result of a synchronization state for the monitoring period.