Customized Ringing Signal Negotiation Within Existing Call Sessions
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Solution Overview
Problem
Existing customized ringing signal services face challenges due to low support rates for the 'early session' mode, leading to inefficient network resource usage and lack of server control, while the 'download and play' mode relies heavily on the called terminal and lacks management.
Innovation Solution
An application server initiates multimedia customized ringing signal negotiation within the existing call session, eliminating the need for a new session and enabling real-time management and control, thus optimizing network resource usage and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the 'early session' mode is used for customized ringing signal service, then real-time server control is enabled, but network resources are occupied due to new session establishment
Solution Approach 1:
The patent merges the customized ringing signal media resource negotiation with the existing call media resource negotiation session. Instead of establishing a separate new session for CRS negotiation, the system uses the same session that is already being used for call media negotiation, thereby avoiding additional network resource consumption while maintaining server control capability.
2Adaptability or versatility
If the 'download and play' mode is used for customized ringing signal service, then terminal independence is improved, but server management and control capability is lost
Solution Approach 1:
The patent introduces the application server as an intermediary that actively participates in the media resource negotiation process. The server sends media session update messages to the called terminal, enabling real-time control and management of the customized ringing signal service while the terminal independently handles the playback functionality.
3Extent of automation
If a new session is established for customized ringing signal media resource negotiation, then server control is enhanced, but network resource consumption increases
Solution Approach 1:
The patent makes the existing call media resource negotiation session serve dual purposes: it handles both the call media negotiation and the customized ringing signal media resource negotiation. This multi-functional approach allows the same session to be used for multiple purposes, eliminating the need for separate sessions and reducing overall network resource consumption.
Data Source
AI summary
An example method for playing a multimedia customized ringing signal and customized alerting tone includes receiving, by an application server, an initial call request from a calling terminal, sending the initial call request to a called terminal, receiving a provisional response to the initial call request from the called terminal, determining customized ring signal media resource information based on the provisional response, sending a first media session update message that carries the customized ring signal media resource information to the called terminal, receiving a first response from the called terminal, and playing the multimedia customized ringing signal based on the first response. The initial call request includes session description protocol (SDP) information of the calling terminal, and the first response includes a result of customized ringing signal media resource negotiation between the application server and the called terminal.