Multi-mode System Selection for Service Continuity
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Solution Overview
Problem
Current methods for system selection in multi-mode wireless communication systems prioritize basic voice service but do not consider the availability of desired services such as instant messaging, push-to-talk, multimedia messaging, and VoIP when a user travels to a new geographic area, limiting the continuity of these services.
Innovation Solution
A terminal and network system that prioritizes communication with available systems on a list that offer the desired services, allowing automatic selection or user choice among systems with the desired services available, using geographic and service availability information to determine the best communication system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PCD uses traditional priority list methods to establish communication, then basic voice service is ensured, but desired services such as instant messaging, push-to-talk, and VoIP cannot be guaranteed
Solution Approach 1:
The patent applies preliminary action by pre-configuring service availability information and system capability data in the PCD before the user travels to a new geographic area. The PCD proactively determines which systems support desired services in advance, rather than reacting after connection failures occur. This allows the PCD to immediately select an appropriate system when entering a new area, ensuring both voice service reliability and desired service availability.
Solution Approach 2:
The patent implements dynamics by making the system selection process adaptive and flexible. Instead of using a static priority list that always attempts systems in the same order regardless of service availability, the PCD dynamically adjusts its selection based on real-time information about which systems support the user's desired services. The selection method changes based on user preferences, service requirements, and available systems, transforming a rigid process into a flexible one that optimizes for service continuity.
2Reliability
If the PCD cycles through the priority list to establish communication, then basic voice service is achieved, but the time to establish desired services is increased
Solution Approach 1:
The patent eliminates time loss by performing system evaluation in advance. The PCD pre-determines which systems support desired services before the user actually needs to connect. When the user enters a new geographic area, the PCD already has a pre-filtered list of suitable systems, allowing immediate connection without cycling through incompatible systems. This preliminary preparation reduces the time required to establish both voice and desired services.
Solution Approach 2:
The patent applies extraction by removing systems that do not support desired services from the consideration set. Instead of cycling through all systems on the priority list regardless of their capabilities, the PCD extracts and filters out incompatible systems based on pre-acquired service availability information. This leaves only the relevant systems that can actually provide the user's desired services, significantly reducing the time needed to find a suitable connection.
3Adaptability or versatility
If the PCD allows user selection of mode, then service availability is improved, but device complexity and ease of operation are affected
Solution Approach 1:
The patent implements self-service by enabling the PCD to automatically perform system selection based on service availability information and user preferences. The device autonomously evaluates which systems support desired services and makes the selection without requiring user intervention. This maintains service availability flexibility while eliminating the complexity of manual mode and system selection, as the PCD handles the decision-making process automatically.
Solution Approach 2:
The patent applies universality by creating a unified system selection mechanism that handles both automatic selection and user preference considerations within a single framework. The PCD integrates service availability checking, system capability evaluation, and user preference application into one multi-functional process. This universal approach provides the flexibility of user choice while maintaining automatic operation, avoiding the need for separate complex interfaces for different selection modes.
Data Source
AI summary
A terminal, network entity, system, method and computer program product enable communications to be established with an available system that is on a priority list and that has a desired service available. Communications may be established automatically with the system that is highest on the priority list and that has the desired service available. Alternatively, all of the systems that are on the priority list and that have the desired service available may be displayed to a user, such that the user may select one of the displayed systems and communications may be established with the selected system.