Data Group Paging Service for Voice Group Calls
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Solution Overview
Problem
Existing Voice Group Call Services do not support the transmission of data within predefined groups, either in parallel to voice calls or independently, lacking a defined mechanism for data distribution among group members.
Innovation Solution
Implementing a Data Group Call Service in GSM or UMTS networks by utilizing IP Multimedia Subsystem (IMS) functions and Session Initiation Protocol (SIP) to establish data connections between group members, with additional IMS group identities and Service Nodes acting as relays for data transmission, enabling data sharing and management within group calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Voice Group Call Service is used for group communication, then group members can communicate voice simultaneously, but data transmission functionality is not provided
Solution Approach 1:
The patent combines Voice Group Call Service (VGCS) with data transmission functionality by integrating the existing VGCS group management structures with new data connection mechanisms. The service node reuses the VGCS group identity and member lists to establish data connections, merging voice and data group communication into a unified service framework.
Solution Approach 2:
The service node is designed to handle multiple functions: it manages both voice group call connections and data transmission connections using the same VGCS group identity. The same infrastructure that routes voice traffic is extended to also route data traffic, making the service node a universal gateway for both voice and data group communications.
2Adaptability or versatility
If data transmission is added to Group Call Service, then data sharing among group members is enabled, but network infrastructure complexity increases
Solution Approach 1:
The service node acts as an intermediary between group members for data transmission. Instead of establishing direct peer-to-peer connections between all group members (which would create complex routing), the service node receives data from the initiating user and distributes it to all other group members, simplifying the network infrastructure while enabling data sharing.
Solution Approach 2:
The system performs preliminary setup by establishing data connections between the service node and all group members in advance, using the existing VGCS group membership information. This preliminary connection establishment simplifies subsequent data transmission, as the routing paths are pre-configured based on the voice group call membership.
3Productivity
If SIP-controlled data connection is established between sender and recipients, then data transmission is enabled, but routing complexity increases
Solution Approach 1:
The patent converts the potential harm of increased routing complexity into a benefit by using the SIP protocol's standardized connection establishment mechanisms. The SIP signaling overhead is transformed into a structured routing setup process that enables efficient data transmission once established, turning the initial complexity into a foundation for productive data flow.
Data Source
AI summary
A method for setting-up a data connection during a group voice service between several group members as a user of a mobile communication network. In a first method, functions of an IP multimedia subsystem (IMS) are used and a session initiation protocol (SIP) and a controlled data connection between an emitter, a terminal and one or several receivers is produced. Each user is allocated to a group voice service identity (VGCS-ID) an IMS group identity (IMS group ID) and is routed to an application server in the IMS with the aid of the user. A data group voice service is developed between the users. In a second method, each user is routed to the service nodes via GPRS using a group voice service identity (VGCS-ID) and an IP address of a service node, which acts as a relay and a data group voice service is carried out between the users.