IMS Signaling Buffering for Wireless Link Quality Management
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Solution Overview
Problem
IMS signaling in wireless communication systems becomes inefficient, leading to increased power consumption and communication channel congestion, especially when 4G/5G signal quality is poor and frequent registration/deregistration occurs.
Innovation Solution
A method where user equipment (UE) devices buffer IMS SIP signaling messages when the wireless communication link is not performing at an acceptable level, and transmit them once the link is restored, maintaining context information for efficient reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent IMS registration/deregistration is performed to maintain service quality, then service reliability is improved, but power consumption increases and communication channel congestion occurs
Solution Approach 1:
The system performs preliminary assessment of link quality before triggering registration/deregistration. By evaluating link quality metrics in advance and setting appropriate thresholds, the system avoids unnecessary registration operations that would consume power and create congestion, while still maintaining service reliability when link quality actually degrades below acceptable levels.
2Reliability
If frequent IMS registration/deregistration is performed to maintain service quality, then service reliability is improved, but communication channel congestion occurs
Solution Approach 1:
The system performs preliminary assessment of link quality before triggering registration/deregistration. By evaluating link quality metrics in advance and setting appropriate thresholds, the system avoids unnecessary registration operations that would create channel congestion, while still maintaining service reliability when link quality actually degrades below acceptable levels.
3Reliability
If IMS registration is maintained during poor link quality, then service availability is improved, but power consumption increases due to continuous signaling
Solution Approach 1:
The system implements feedback mechanisms that continuously monitor link quality metrics and use this information to dynamically control registration state. When link quality exceeds a threshold, the system maintains registration; when it falls below the threshold, the system performs deregistration to conserve power. This feedback-driven approach ensures service availability is maintained only when necessary, reducing unnecessary power consumption from continuous signaling during poor link conditions.
Data Source
AI summary
Apparatuses, systems, and methods for improving efficiency in IMS registration and management in a wireless communication device, such as a UE. In some scenarios, the UE may, while implementing IMS services (e.g. for VoLTE) over a wireless communication link with a cellular network, determine that the wireless communication link is not performing at an acceptable level. In response, the UE may start a timer and buffer IMS SIP signaling messages while the timer is running. If the wireless communication link performance is restored to an acceptable level before expiration of the timer, the UE may transmit the buffered IMS SIP signaling messages. If the timer expires prior to restoration of the wireless communication link, the buffered messages may be cleared, and the UE may locally deregister from IMS registration and IMS PDN. In some scenarios, select IMS SIP signaling messages may be omitted or removed from the buffer.