Ad Hoc Network Time Synchronization via Request-Reply Frames
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In ad hoc networks, new nodes must wait for a time-synchronization frame to be transmitted periodically by existing nodes, which can take a long time, preventing them from entering the network and communicating data until synchronization is achieved.
Innovation Solution
A new node transmits a time-synchronization request frame to a synchronized node, receiving a time-synchronization reply frame with synchronization information, allowing it to synchronize immediately and enter the network without waiting for the periodic synchronization frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If new nodes wait for periodic time-synchronization frames from existing nodes, then time-synchronization is achieved, but network entry time becomes excessively long
Solution Approach 1:
Existing nodes perform preliminary action by proactively transmitting time-synchronization reply frames to new nodes upon detecting their entry. Instead of waiting for the new node to passively receive periodic frames, the synchronized node initiates the synchronization process in advance, significantly reducing network entry time while maintaining accurate time-synchronization.
2Stability of the object's composition
If time-synchronization frames are transmitted periodically, then time-synchronization is maintained, but new nodes cannot enter the network immediately
Solution Approach 1:
The system implements feedback mechanism where new nodes transmit time-synchronization request frames to existing nodes. The existing nodes respond with time-synchronization reply frames containing current time information. This bidirectional communication establishes rapid synchronization without requiring the new node to wait for periodic broadcasts, thereby improving network entry efficiency while maintaining synchronization stability.
3Reliability
If new nodes wait for periodic time-synchronization frames, then synchronization is achieved, but network regeneration time increases
Solution Approach 1:
Existing nodes perform preliminary action by proactively transmitting time-synchronization reply frames to new nodes upon detecting their entry. Instead of waiting for the new node to passively receive periodic frames, the synchronized node initiates the synchronization process in advance, significantly reducing network entry time while maintaining accurate time-synchronization.
Data Source
AI summary
A method and a device perform time-synchronization with an ad hoc network configured by a plurality of nodes. The method includes: transmitting a time-synchronization request frame including an address of one of the plurality of nodes which belong to the ad hoc network to one of the plurality of nodes having a function of receiving the time-synchronization request frame and transmitting a time-synchronization reply frame including time-synchronization information; receiving the time-synchronization reply frame including the time-synchronization information from one of the plurality of nodes which receive the time-synchronization request frame; and performing time-synchronization with one of the plurality of nodes using the time-synchronization information included in the time-synchronization reply frame.