D2D Synchronization Signal Extraction from Guard Interval
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, device-to-device (D2D) communication faces challenges in synchronizing signals due to propagation delays and the need for guard intervals, which limits efficient signal reception and transmission.
Innovation Solution
A method for receiving signals in D2D communication involves using a synchronization signal transmitted within a part of a symbol, with a guard interval, and a boundary signal to acquire synchronization and receive control or data signals, where the synchronization signal is repeated and the boundary signal is transmitted using a different sequence, allowing for efficient bandwidth determination and identification of terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a guard interval is inserted to cancel propagation delay and enable transmission/reception switching, then communication reliability is improved, but transmission time is lost and productivity deteriorates
Solution Approach 1:
The patent extracts the synchronization signal transmission function from the guard interval period. By transmitting the synchronization signal in the remaining 0.5 symbol duration after removing the guard interval, the system eliminates the time loss caused by the guard interval while maintaining the ability to detect correct timing and perform synchronization, thus resolving the contradiction between reliability and productivity
Solution Approach 2:
The synchronization signal is transmitted in advance during the 0.5 symbol period before the main data transmission begins. This preliminary transmission allows the receiver to acquire timing information and perform synchronization before actual communication starts, ensuring reliable reception without requiring a separate guard interval period
2Measurement precision
If the synchronization signal is transmitted using a full symbol duration, then measurement precision for timing detection is improved, but bandwidth utilization deteriorates due to the guard interval requirement
Solution Approach 1:
The patent applies partial action by transmitting the synchronization signal using only 0.5 symbol duration instead of a full symbol. This partial transmission is sufficient for timing detection and synchronization purposes, allowing the system to achieve the required measurement precision while freeing up the other 0.5 symbol duration for data transmission, thereby improving bandwidth utilization
Data Source
AI summary
Disclosed is a method by which a first terminal receives a signal in a wireless communication system. Particularly, the method comprises the steps of: receiving a synchronization signal for device-to-device communication from a second terminal; obtaining synchronization based on the synchronization signal; receiving a boundary signal for the device-to-device communication from the second terminal; and receiving a control signal or a data signal using the device-to-device communication based on the boundary signal, wherein the synchronization signal is transmitted by using a part of one symbol.