Web Browser IMS Registration for WebRTC Services
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Solution Overview
Problem
Current mobile communication systems face challenges in providing Web Real-Time Communication (WebRTC) services without the need for additional applications or plugins, particularly in connecting User Equipment (UE) to Internet Protocol Multimedia Subsystem (IMS) networks through web browsers, which limits the ability to offer multimedia services like voice, data, and video over packet-switched networks.
Innovation Solution
A method is developed to connect UE to an IMS network through a web browser by selecting a Proxy-Call Session Control Function (P-CSCF), registering it in the IMS network, and providing WebRTC services, involving obtaining UE-related information, transmitting messages to a WebRTC web server, and establishing secure connections between the WebRTC client and the eP-CSCF for registration and service provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If UE connects to IMS network through web browser without additional applications, then ease of operation is improved, but device complexity increases due to need for web browser-based IMS client functionality
Solution Approach 1:
The web browser is enhanced to perform multiple functions: it serves as both a standard web browser and an IMS network client. The browser can establish PDN connections, obtain P-CSCF addresses, and perform IMS registration procedures directly, eliminating the need for separate native IMS applications while maintaining full IMS service capability.
Solution Approach 2:
A web server acts as an intermediary between the UE and the IMS network. The web server facilitates the connection by providing web pages that contain embedded P-CSCF addresses and configuration information, enabling the browser to connect to the IMS network without requiring complex native application logic.
2Adaptability or versatility
If web browser establishes PDN connection to access IMS network, then adaptability is improved, but loss of time increases due to additional connection establishment steps
Solution Approach 1:
The P-CSCF address and IMS configuration information are obtained in advance through web page retrieval before actual IMS service usage. The browser establishes the PDN connection and retrieves necessary network configuration data during initial web browsing activities, so that when IMS services are needed, the connection and configuration are already in place, reducing registration time.
3Ease of manufacture
If P-CSCF address is obtained through PDN connection establishment, then ease of manufacture is improved, but measurement precision decreases due to indirect address acquisition
Solution Approach 1:
The web server serves as an intermediary that provides the P-CSCF address through web page content. Instead of directly querying network infrastructure or using complex discovery protocols, the address is embedded in HTML content that the browser retrieves and parses, simplifying the implementation while ensuring accurate address acquisition through standard web protocols.
Data Source
AI summary
A method that connects a User Equipment (UE) to an Internet Protocol Multimedia Subsystem (IMS) network through a web browser for a Web Real-Time Communication (WebRTC) service is provided. The method, and a UE adapted to the method, downloads a web app for a WebRTC service and connects to an IMS network through a WebRTC client. The UE connects to the IMS network and is registered in the IMS network in such a way as to use a Universal Resource Locator (URL) of an enhanced Proxy-Call Session Control Function (eP-CSCF) obtained by establishing a Packet Data Network (PDN) connection of the UE through a web browser in the process of obtaining a URL of the eP-CSCF, or the obtained URL of an eP-CSCF to which the WebRTC client can connect by transmitting Public Land Mobile Network (PLMN) information of a network to which the UE is connected to a WebRTC Web Server Function (WWSF). Therefore, the UE can easily use WebRTC services.