IMS Data Channel Discovery for Reliable Network Element Selection
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Solution Overview
Problem
The success rate for establishing a Data Channel (DC) in a next-generation Internet Protocol Multimedia Subsystem (IMS) network is low, leading to increased communication delays due to the need for re-establishment.
Innovation Solution
A method and apparatus that efficiently discover and select appropriate DC network elements by sending service discovery requests and responses between network elements, ensuring the selected elements match the required media or control information and current call requests, thereby improving the success rate and reducing communication delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional DC establishment methods are used in IMS network, then the network architecture is simple, but the DC establishment success rate is low and communication delay increases
Solution Approach 1:
The patent implements service discovery requests before DC establishment to pre-identify suitable network elements. The first network element sends service discovery requests to the second network element to obtain information about third network elements that can provide required DC media or control services, ensuring the selected elements match the required criteria before actual DC establishment occurs.
Solution Approach 2:
The patent introduces a service discovery mechanism as an intermediary between DC establishment attempts. The second network element acts as a mediator that receives service discovery requests, determines information about suitable third network elements, and returns this information to guide the DC establishment process, thereby improving success rates and reducing delays.
2Reliability
If service discovery requests are sent to discover suitable DC network elements, then the DC establishment success rate improves, but the network signaling overhead increases
Solution Approach 1:
The patent designs the service discovery mechanism to serve multiple functions simultaneously: it identifies suitable network elements for DC establishment, gathers information about media and control service capabilities, and enables informed selection decisions. This multi-functionality reduces the need for separate signaling procedures, thereby managing overhead while improving success rates.
Solution Approach 2:
The patent changes the parameters of network element selection by incorporating service discovery requests that specify required DC media or control service criteria. The second network element determines information about third network elements based on these parameters, allowing the first network element to select elements that match required criteria, improving success rates without excessive overhead.
Data Source
AI summary
An information processing method and apparatus, a communication device, and a storage medium are provided. The method includes: sending a first service discovery request to a second network element, the first service discovery request including at least required DC media information and/or related information of a current call request; and receiving a first service discovery response returned by the second network element, the first service discovery response including at least third network element related information or third network element set related information.