QoS-Based Mobility Management in Communication Networks
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Solution Overview
Problem
Current mobility management in 3GPP and non-3GPP access networks does not consider the quality of service offered by access points, leading to potential degradation of service when switching between networks, as it relies solely on traffic information without accounting for the quality of service requirements of ongoing services.
Innovation Solution
A method that involves a quality of service application equipment identifying the type of service accessed by a mobile terminal, determining the corresponding quality of service class, and an access point discovery server generating a list of compatible access points, which are then transmitted to the terminal for seamless mobility, ensuring that the selected access points can maintain the required quality of service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobility management is based solely on traffic information and access point availability, then the mobility management process is simple and fast, but the quality of service may be degraded when switching between networks
Solution Approach 1:
The system performs preliminary action by pre-determining QoS classes for different service types and pre-configuring access points with their QoS capabilities before mobility events occur. The access point discovery server proactively retrieves QoS information and classifies services in advance, so that when mobility management is needed, the QoS requirements are already established and can be used to filter and select appropriate access points immediately, avoiding service degradation during network switching.
2Reliability
If the access point list is filtered based on QoS compatibility, then service quality is maintained during mobility, but the list of available access points is reduced
Solution Approach 1:
The system applies local quality by tailoring the access point list to the specific QoS requirements of each service type. Instead of providing a uniform list of all available access points, the system filters and customizes the list based on the determined QoS class, ensuring that only access points capable of meeting the specific service requirements are included. This maintains service quality while providing appropriate flexibility for different service types.
3Reliability
If QoS information is collected and processed for each service, then accurate mobility decisions can be made, but the processing time and network overhead increase
Solution Approach 1:
The system reduces processing time by performing QoS information collection and service classification in advance, before mobility events occur. The access point discovery server pre-retrieves QoS information from the network and pre-determines QoS classes for common service types. This preliminary processing ensures that when mobility decisions are needed, the QoS data is already ready, minimizing real-time processing delays while maintaining accurate mobility decisions.
Data Source
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AI summary
The invention relates to a method for managing the mobility of a mobile terminal in a communication network comprising a plurality of access points. The method comprises the following steps: determination, by a quality of service management (QoS) system, of a QoS class based on a service accessed by the mobile terminal; generation, by a communication network access point discovery server, of the list of access points by selecting at least one access point in the communication network that is compatible with the QoS class determined by the QoS system; and transmission, from the access point discovery server to the mobile terminal, of said list of access points. The invention also relates to a corresponding access point discovery server, mobile terminal, and communication network.