Video Call Endpoint Handover Using Presence-Based Continuity Control
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Solution Overview
Problem
Existing systems fail to maintain seamless video call continuity between multiple devices, such as mobile devices and drones, leading to interruptions during transitions in video call endpoints.
Innovation Solution
A system utilizing a presence server and call continuity system to identify and manage related devices on a telecommunications network, enabling seamless switching of video call endpoints between devices without interruption, by using presence information and transfer policies to facilitate continuous video content provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If video call endpoints are switched between multiple devices, then device versatility and user flexibility are improved, but call continuity and service reliability deteriorate due to interruptions during transitions
Solution Approach 1:
The patent introduces a call continuity system and presence server as intermediary components between user devices and the telecommunication network. These intermediaries manage device transitions, maintain call state information, and coordinate handover procedures to ensure seamless switching between devices without interrupting the video call, thereby resolving the contradiction between device flexibility and call continuity
Solution Approach 2:
The system performs preliminary actions by pre-establishing presence information, device relationships, and call state contexts before actual device switching occurs. The presence server pre-registers multiple devices and the call continuity system pre-configures transfer policies, enabling smooth transitions without interruption to the ongoing video call
2Adaptability or versatility
If multiple devices are registered and managed for video calls, then adaptability and user convenience are improved, but system complexity increases due to additional management infrastructure
Solution Approach 1:
The call continuity system and presence server are designed as universal multi-functional components that handle multiple tasks: device registration, presence information management, call state tracking, and handover coordination. By consolidating these functions into unified system components, the patent manages multi-device complexity through standardized protocols and centralized management rather than requiring separate specialized systems for each function
Solution Approach 2:
The patent implements a nested architecture where the call continuity system operates within the telecommunication network infrastructure, and the presence server functions as a nested component managing device-level presence information. This hierarchical nesting organizes complexity by placing management functions at appropriate levels, with the presence server handling device-specific details and the call continuity system handling call-level coordination
Data Source
AI summary
Systems and methods are described herein for maintaining and/or facilitating video call continuity between devices. For example, the systems and methods support video calls or other communications between multiple devices (e.g., a mobile device providing a video call stream of content and a drone or other moving device capturing and streaming content via a camera) providing video content to a target device, such as another mobile device.