Wireless Device Network Synchronization Timer Restart
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Solution Overview
Problem
Wireless communication devices experience delays and latency when regaining network connections after a link degradation, leading to poor user experience and device performance due to synchronization issues between the device and the network.
Innovation Solution
Implementing a method that involves performing ranging processes to monitor the wireless link, determining the duration since the last successful ranging, and restarting timers for both the wireless device and the access node upon receiving repeat request acknowledgement messages to maintain synchronization and efficiently re-establish network connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wireless device performs full re-entry processes to regain network connection after link degradation, then the network connection is reliably re-established, but delay and latency increase significantly affecting user experience
Solution Approach 1:
The patent applies preliminary action by establishing and maintaining synchronization between the wireless device and access node before link degradation occurs. Timers are pre-configured and continuously synchronized, so when the link degrades and recovers, the device can quickly re-establish connection using the pre-maintained synchronization information rather than performing full re-entry processes. This reduces delay and latency while ensuring reliable connection recovery.
2Loss of time
If the wireless device maintains continuous synchronization with the network, then delay and latency are reduced improving user experience, but device complexity and processing overhead increase
Solution Approach 1:
The patent implements periodic action through the use of timers that are restarted at specific intervals based on synchronization messages exchanged between the wireless device and access node. Instead of continuous complex processing, the system uses periodic timer updates triggered by repeat request acknowledgement messages or other synchronization messages. This maintains synchronization with reduced processing overhead compared to continuous monitoring and adjustment.
3Measurement precision
If timers are restarted frequently to maintain synchronization, then synchronization accuracy is improved, but message overhead and processing load increase
Solution Approach 1:
The patent applies universality by using existing repeat request acknowledgement messages in the communication protocol to serve dual purposes: both acknowledging data reception and triggering timer restarts for synchronization. Instead of introducing separate dedicated synchronization messages that would increase overhead, the system makes the existing acknowledgement messages multi-functional by having them also carry synchronization timing information. This maintains synchronization accuracy without significantly increasing message overhead.
Data Source
AI summary
A method of operating a communication system comprises performing a plurality of ranging processes to establish a network connection over a wireless link. A time interval is established for a wireless device timer at the wireless device upon establishing the network connection and a time interval is established for an access node timer at the access node upon establishing the network connection. The method also comprises establishing a communication session over the wireless link and network connection. When a repeat request acknowledgement message is received during the communication session, the time interval for the wireless device timer and the time interval for the access node timer is restarted.