Wireless Session Drop Notification and Protection Mechanism
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Solution Overview
Problem
Wireless communication sessions often experience drops due to noise or distance, leading to confusion and ineffective reestablishment attempts between users and networks, as there is no coordinated notification or protection mechanism for session losses and recoveries.
Innovation Solution
A communication system that detects session losses and recoveries on both forward and reverse links, transferring notifications and recovery probes to ensure coordinated reestablishment of wireless communication sessions, thereby minimizing user confusion and improving session reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the proximate user device provides a session drop notification, then the user is informed of the session loss, but the far-end user receives no notification and may continue the session causing confusion
Solution Approach 1:
The notification system is segmented into two separate notification paths: one for the proximate user device and another for the far-end user. The access network device generates and sends notifications to both ends independently, ensuring that each user receives appropriate session status information without causing confusion.
Solution Approach 2:
The access network device acts as an intermediary that coordinates session drop notifications between the proximate and far-end user devices. It receives session loss indications, generates appropriate notifications, and distributes them to both ends, eliminating the information asymmetry that causes user confusion.
2Reliability
If both users attempt to reestablish the dropped session independently, then reconnection efforts are initiated, but coordination between the two ends is ineffective leading to session establishment failures
Solution Approach 1:
The system implements a feedback mechanism where the access network device monitors session status and sends session establishment coordination notifications to both user devices. When one end attempts to reestablish the session, the access network device notifies the other end, enabling coordinated reconnection efforts and improving session reestablishment reliability.
3Duration of action of stationary object
If the remaining operational link does not drop, then communication continuity is maintained on one link, but the user on the other end may still receive communications without realizing their communications are not getting through
Solution Approach 1:
The access network device performs preliminary detection of session losses on either the forward or reverse link before the user experiences communication failures. It proactively generates and sends session status notifications to both user devices, informing them of the session drop condition even when one link remains operational, thus preventing user confusion about communication status.
Data Source
AI summary
A communication system provides a wireless communication session to a user device over a forward link and a reverse link. A wireless network determines that drop notification and protection is effective for the session and detects session loss on the reverse link. The network transfers a session loss indication to the user device to over the forward link and transfers a protection notice to the other communication end-point. The user device receives the session loss indication over the forward link and notifies the user. The user device transfers recovery probes over the reverse link. The network detects session recovery on the reverse link and transfers a session recovery indication to the user device over the forward link. The network transfers a recovery notice to the communication end-point. The user device receives the session recovery indication over the forward link and notifies the user of the session recovery.