D2D Synchronization Signal Selection Using Group Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In device-to-device (D2D) communication, existing systems face challenges in efficiently selecting and maintaining synchronization signals, leading to potential packet loss and disruptions in data reception, especially when multiple synchronization signals with different priorities and strengths are received.
Innovation Solution
An electronic device is designed to selectively perform synchronization based on identification information and service-level information included in synchronization signals, using a reserved field in the Master Information Block (MIB-SL) to generate and transmit synchronization signals, and to prioritize signals from specific communication groups, thereby preventing unnecessary monitoring and packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electronic device performs periodic or aperiodic monitoring to select the strongest synchronization signal, then synchronization accuracy is improved, but communication continuity with the current external electronic device may be disrupted
Solution Approach 1:
The patent applies local quality by differentiating between synchronization signals from devices within the same communication group versus those from different groups. The electronic device selectively processes synchronization signals based on their source group identity, giving preferential treatment to signals from the current communication group while still allowing periodic monitoring. This resolves the contradiction by maintaining communication continuity with the current device while preserving the ability to detect and switch to better synchronization sources within the same group.
Solution Approach 2:
The patent implements dynamics by making the monitoring behavior adaptive rather than static. The electronic device dynamically adjusts its monitoring strategy based on whether a stronger synchronization signal is detected from the same communication group. When no better signal is found, monitoring continues at normal intervals; when a better signal is detected, the device can switch synchronization sources. This dynamic approach maintains communication reliability while improving synchronization accuracy when opportunities arise.
2Measurement precision
If the electronic device switches to a synchronization signal with higher strength from another communication group, then synchronization quality is improved, but data reception from the current communication group is lost
Solution Approach 1:
The patent applies local quality by implementing group-specific synchronization signal processing. The electronic device identifies the communication group associated with each synchronization signal and prioritizes signals from the current communication group. When evaluating whether to switch synchronization sources, the device checks if the new signal originates from the same group as the current communication partner. This prevents switching to signals from different groups that would cause data reception loss, while still allowing switches within the same group that improve synchronization quality.
3Measurement precision
If the electronic device performs frequent synchronization monitoring, then synchronization accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by implementing scheduled synchronization monitoring at predetermined intervals rather than continuous monitoring. The electronic device performs synchronization signal measurements at specific periodic moments while maintaining normal communication operations between these moments. This periodic approach significantly reduces energy consumption compared to continuous monitoring while still maintaining adequate synchronization accuracy for reliable communication.
Solution Approach 2:
The patent implements partial action by performing synchronization monitoring only when necessary rather than continuously. The device monitors synchronization signals at selective intervals and only initiates switching procedures when a stronger signal from the same communication group is detected. This partial monitoring strategy reduces energy consumption by avoiding unnecessary monitoring and switching operations while still achieving sufficient synchronization accuracy for maintaining communication reliability.
Data Source
AI summary
According to various embodiments, an electronic device comprises a communication circuit, a processor, and a memory electrically connected to the processor, wherein the memory, when executed, can store commands for allowing the processor to: receive, from a first external electronic device, a first synchronization signal including first identification information through the communication circuit; synchronize the electronic device with the first external electronic device on the basis of at least a part of the information included in the first synchronization signal; receive, from a second external electronic device, a second synchronization signal including second identification information through the communication circuit; and control, on the basis of the second identification information and the first identification information, whether synchronization with second external electronic device occurs. Additional various embodiments are possible.