Wireless Registration Timer Adjustment for Network Quality
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Solution Overview
Problem
In wireless communication networks, mobile devices often experience reduced network quality due to changing signal strength and environmental conditions, leading to stale registrations that consume network resources inefficiently, as existing registration timers do not adapt quickly enough to coverage changes.
Innovation Solution
Implementing a registration module in wireless communication devices that dynamically adjusts the registration timer based on network quality, reducing the timer length when quality degrades and increasing it when quality improves, allowing for more efficient resource utilization and quicker clearance of stale registrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed predetermined registration timer is used, then the registration process is simple and stable, but stale registrations accumulate when network quality degrades, consuming network resources inefficiently
Solution Approach 1:
The patent applies dynamics by making the registration timer adjustable rather than fixed. The timer value changes dynamically based on network quality conditions - shorter timers are used when network quality degrades to prevent stale registrations, while longer timers are used when network quality is good to reduce signaling overhead. This resolves the contradiction by allowing the system to adapt timer duration to current network conditions, improving resource efficiency without requiring complex permanent changes to the registration mechanism.
Solution Approach 2:
The patent changes the parameter of registration timer duration based on network quality metrics. When network quality deteriorates (e.g., signal strength drops, coverage instability), the system reduces the timer value to ensure faster expiration of potentially stale registrations. When network quality is stable, the timer value increases to reduce the frequency of registration renewals. This parameter adaptation directly addresses the contradiction between resource efficiency and system complexity.
2Reliability
If the registration timer is shortened to quickly clear stale registrations, then network resource efficiency improves, but the device must send re-registration requests more frequently, increasing signaling overhead
Solution Approach 1:
The system dynamically adjusts the registration timer based on real-time network quality assessment. When network quality is poor, shorter timers are applied to ensure stale registrations are cleared quickly, accepting increased signaling as necessary. When network quality is good, longer timers reduce signaling frequency. This dynamic adaptation resolves the contradiction by making the timer duration contingent on network conditions rather than using a fixed value.
Solution Approach 2:
The registration timer parameter is changed based on network quality measurements. The system monitors network conditions and adjusts the timer value accordingly - reducing it when quality degrades to maintain registration accuracy, and increasing it when quality is stable to minimize signaling overhead and time loss. This parameter flexibility directly addresses the trade-off between registration reliability and signaling efficiency.
3Loss of time
If the registration timer is extended to reduce re-registration frequency, then signaling overhead decreases, but stale registrations persist longer, consuming network resources inefficiently
Solution Approach 1:
The patent implements dynamics by making the registration timer adaptive rather than static. The timer duration is adjusted based on network quality - extended when quality is good to reduce signaling frequency, and shortened when quality degrades to prevent stale registration accumulation. This dynamic behavior resolves the contradiction by allowing the system to optimize between signaling overhead and resource efficiency based on current conditions.
Solution Approach 2:
The registration timer parameter is modified according to network quality assessments. When network conditions are stable and good, the timer is extended to minimize re-registration signaling. When network conditions deteriorate, the timer is reduced to ensure timely clearance of stale registrations. This parameter adaptation strategy directly addresses the contradiction between reducing signaling overhead and maintaining network resource efficiency.
Data Source
AI summary
The disclosure is directed to managing registration of a wireless communication device (WCD) operating in a wireless network. The WCD may support registration according to a signaling protocol, such as session initiation protocol (SIP). The WCD adjusts a registration timer based on network quality experienced by the WCD. When network quality is poor, for example, the WCD reduces the length of the registration timer. Reduced network quality may indicate that the WCD is at risk of losing network coverage. By reducing the length of the registration timer when network quality is degraded, stale registrations for out-of-coverage WCDs can be reduced. In particular, the shortened registration timer will expire more quickly, permitting the registration to be cleared more quickly. Consequently, the amount of call forwarding and other resources devoted to stale registrations can be reduced. If the WCD retains network coverage, it can maintain a registration by sending another registration request.