Call Contention Manager Post-Drop Reconnection Protocol
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Solution Overview
Problem
Current telecommunications systems face challenges in managing call contention events, particularly when two callers attempt to reconnect shortly after an involuntary call drop, leading to confusion and frustration as both parties are often routed to voicemail, even though they are available and willing to speak.
Innovation Solution
A call contention manager is implemented to differentiate between call contentions occurring within a post-drop window and those outside of it, employing a post-drop protocol to reconnect callers who recently experienced a call drop, thereby minimizing disruption and user confusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional call contention protocols are used to resolve call collisions, then call collision resolution is achieved, but callers who recently experienced a call drop are incorrectly routed to voicemail, causing user frustration and confusion
Solution Approach 1:
The system performs preliminary identification of call drop scenarios by detecting call contention patterns that occur shortly after a call termination. By recognizing the temporal relationship between call drop and subsequent call attempt, the system proactively applies the post-drop protocol to prevent incorrect voicemail routing before it occurs.
Solution Approach 2:
The patent applies different contention resolution protocols based on the specific context: the post-drop protocol is applied locally to calls occurring within the post-drop window, while traditional protocols continue to handle other call scenarios. This localized approach ensures that only relevant cases receive the special treatment needed to avoid voicemail routing.
2Ease of operation
If a post-drop protocol is implemented to reconnect callers after call drops, then user experience is improved, but system complexity increases due to additional protocol differentiation
Solution Approach 1:
The system dynamically selects between different contention resolution protocols based on real-time conditions. The call contention manager monitors call patterns and automatically determines whether to apply the traditional protocol or the post-drop protocol, allowing the system to adapt its behavior without requiring complex manual configuration or user intervention.
Solution Approach 2:
The call contention manager acts as an intermediary component that sits between the call processing system and the protocol selection logic. It receives call setup requests, determines whether they qualify for post-drop treatment by checking against the post-drop window, and routes appropriate protocol selections to the call processing system, thereby centralizing the complexity in a dedicated management component.
3Device complexity
If call contentions are resolved using standard protocols without differentiation, then system simplicity is maintained, but legitimate call reconnections are blocked and routed to voicemail
Solution Approach 1:
The system performs preliminary identification of call drop scenarios by detecting call contention patterns that occur shortly after a call termination. By recognizing the temporal relationship between call drop and subsequent call attempt, the system proactively applies the post-drop protocol to prevent incorrect voicemail routing before it occurs.
Data Source
AI summary
A call contention manager mediates between call contentions that occur when two callers attempt to place a telephone call to one another at approximately the same time. The call contention manager may be implemented in or separate from a mobile switching center. The manager detects a call contention between two calls, and it determines whether the call contention is taking place in a window of time that follows shortly after at least one of the callers was involuntarily dropped from a call. If a call contention occurs within such a call drop window, it is resolved according to a post-drop protocol that enables a connection between the callers. If, however, the call contention occurs outside any call drop window, it is resolved without establishing a connection between the callers, for example by sending one or more of the contending calls to voicemail.