Communication Session Soft Handover for QoS Maintenance
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Solution Overview
Problem
In emerging ubiquitous network environments, IP-based core networks face challenges in maintaining Quality of Service (QoS) due to degraded serving delivery routes, leading to unsatisfactory performance in delivering multimedia services, particularly in scenarios where traditional communication systems fail to efficiently manage network congestion and switch to alternative routes.
Innovation Solution
A communication session soft handover method and system that enables user devices and network management servers to detect and initiate handovers to secure alternate delivery routes, using a network management server to select and establish alternate communication session profiles and security profiles, allowing concurrent delivery over both the serving and alternate routes, and seamlessly transitioning to the alternate route upon completion of the handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional communication systems use a single serving delivery route, then device complexity is reduced, but QoS reliability deteriorates when the route is degraded
Solution Approach 1:
The system establishes alternate delivery routes in advance before the serving route degrades. The network management server pre-configures backup routes and maintains their readiness, so when QoS degradation occurs on the serving route, the transition to alternate routes can happen immediately without complex real-time route selection and setup procedures.
Solution Approach 2:
The patent changes the state of communication sessions from single-route to multi-route by modifying the routing parameters. The system dynamically adjusts the active delivery route parameter based on QoS conditions, allowing seamless switching between serving and alternate routes without fundamental system restructuring.
2Reliability
If the system implements soft handover with concurrent delivery over multiple routes, then QoS reliability improves, but loss of energy increases due to simultaneous transmissions
Solution Approach 1:
The system implements partial concurrent transmission by delivering content over both the serving and alternate routes simultaneously only during the handover transition period. Once the handover is complete, the system switches to single-route delivery, thus using multi-route transmission only when necessary rather than maintaining it continuously.
Solution Approach 2:
The soft handover mechanism ensures continuous service delivery by maintaining active communication sessions on both serving and alternate routes during transition. This continuity prevents service interruption while the system efficiently manages the temporary increase in energy consumption only during the critical handover window.
3Reliability
If traditional systems perform hard handover with immediate route switching, then energy consumption is reduced, but QoS reliability deteriorates due to service interruption
Solution Approach 1:
The alternate delivery routes are pre-established and configured before handover is needed. The network management server maintains backup session profiles and route information in advance, so when handover is triggered, the system can immediately activate the pre-prepared alternate route without time-consuming setup procedures.
Solution Approach 2:
The network management server acts as an intermediary that coordinates the handover process between the communication sessions and the delivery routes. It manages the transition by orchestrating the activation of alternate routes and the deactivation of serving routes, ensuring seamless service continuity without direct intervention from end devices.
4Reliability
If the system establishes alternate communication sessions with security profiles, then QoS reliability improves, but device complexity increases due to additional session management
Solution Approach 1:
The system extracts the complexity of alternate session management to the network management server rather than distributing it across end devices. The server handles the creation, maintenance, and switching of alternate communication sessions and their security profiles, while user devices simply follow switching instructions, thus centralizing complexity management.
Solution Approach 2:
The system creates copied versions of communication session profiles for alternate routes, maintaining identical security parameters and configuration settings. These copied profiles are pre-configured with the same security requirements as the serving session, ensuring consistent security management without requiring complex custom configurations for each alternate route.
Data Source
AI summary
While receiving content for a service at a user device via a particular delivery route, detecting a request for delivery of subsequent content for the service via a secure alternate delivery route. The user device may concurrently receive delivery of the subsequent content via the particular delivery route and the secure alternate delivery route. The detected request may be generated based on QoS associated with the received content of the service. The detected request may be received from a communication network and may comprise identification information for the particular delivery route. The secure alternate delivery route may be determined based on the identification information for the particular delivery route. A communication session profile may be generated and/or determined based on the secure alternate delivery route. The communication session profile is utilized for the requested delivery of the further content via the secure alternate delivery route.