Anchoring Network Device Call Control Routing
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Solution Overview
Problem
Modern telecommunications networks face challenges in providing differentiated call-control services specific to particular access networks, as existing systems lack the ability to effectively utilize access network type information to offer services like video-calling or charge call minutes appropriately based on network types.
Innovation Solution
The implementation of an anchoring network device that determines a routing identifier based on access-network type and capabilities, transmitting this information to a call-control server to modify communication sessions accordingly, enabling services tailored to the specific access networks involved in a communication session.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single MSC address is used for all access networks, then system complexity is reduced, but the ability to provide differentiated call-control services specific to access networks is lost
Solution Approach 1:
The patent segments the routing identifier system by access network type. Different MSC addresses are assigned to different access networks (e.g., GSM, UMTS, LTE). This segmentation enables the system to provide differentiated call-control services specific to each access network while maintaining manageable complexity through organized separation.
Solution Approach 2:
The patent implements local quality by making the MSC address dependent on the access network type. Each access network type has its own specific MSC address, allowing call-control services to be tailored to the characteristics and capabilities of each specific access network rather than using a uniform approach.
2Adaptability or versatility
If access network type information is not transmitted to call-control servers, then signaling overhead is reduced, but call-control services cannot be customized based on network capabilities
Solution Approach 1:
The patent applies preliminary action by determining and embedding the appropriate MSC address (which encodes access network type information) into the Initial Detection Point (IDP) message before it is sent to the call-control server. This preliminary encoding ensures that the call-control server receives the necessary access network type information without requiring additional signaling exchanges.
Solution Approach 2:
The patent uses the MSC address as an intermediary that carries access network type information. Instead of transmitting raw access network type data directly, the information is encoded within the MSC address structure, which then serves as the carrier of this information through the signaling system to the call-control server.
3Productivity
If packet-switched access networks are used exclusively, then data throughput is improved, but compatibility with circuit-switched services and infrastructure is lost
Solution Approach 1:
The patent implements universality by making the call-control system capable of handling multiple access network types (both packet-switched and circuit-switched) through a unified architecture. The system can determine the access network type and route calls appropriately, allowing the network to support diverse services including high-speed packet-switched data and traditional circuit-switched voice services without requiring separate systems.
Data Source
AI summary
Telecommunications network components configured to manage call control of a communication session of user equipment are described herein. An anchoring network device may proxy signaling traffic for the communication session. The anchoring network device may determine a routing identifier based at least in part on which access network, or which type of access network, is carrying the communication session, and may transmit state information of the communication session to a call-control server in association with the routing identifier. The call-control server may provide control information of the communication session to the anchoring network device in response to the state information. The anchoring network device may modify the communication session, e.g., by adding or dropping one or more parties, in response to the control information. The routing identifier may be determined based at least in part on capabilities of a communication session indicated in a session-initiation message.