MTC-IWF Proxy for MNO and Service Provider Interworking
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Solution Overview
Problem
Mobile Network Operators (MNOs) face challenges in providing data services to various Machine-Type Communication (MTC) devices due to limited interoperability with MTC service providers, as they use different internal signaling protocols, necessitating a solution that allows communication without modifying these protocols.
Innovation Solution
The deployment of an MTC interworking function (MTC-IWF) Proxy, hosted on an Internetwork Packet Exchange (IPX) server, establishes connections between MTC-IWF on the MNO side and Services Capabilities Server on the MTC service provider's side, using a trigger-service provider interface, and provides identity mapping services, ensuring communication without altering internal signaling protocols, with mutual authentication and security through TLS, DTLS, or IPSec-IKEv2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MNOs and MTC service providers use different internal signaling protocols, then each provider maintains protocol independence and security, but interoperability between them is limited and difficult to deploy
Solution Approach 1:
The patent introduces an MTC-IWF Proxy as an intermediary component that sits between the MTC-IWF of the MNO and the SCS of the MTC service provider. This proxy translates and adapts signaling protocols between different providers, enabling interoperability without requiring modifications to the internal protocols of either the MNO or the MTC service provider. The proxy acts as a mediator that handles protocol conversion, authentication, and message routing.
Solution Approach 2:
The patent segments the signaling path into distinct functional components: the MTC-IWF of the MNO, the MTC-IWF Proxy, and the SCS of the MTC service provider. This segmentation allows each component to maintain its own protocol stack and security domain while still enabling end-to-end communication. The proxy is a separate deployable entity that can be independently configured and managed.
2Adaptability or versatility
If MNOs modify their internal signaling protocols to enable communication with MTC service providers, then interoperability improves, but protocol integrity and security are compromised
Solution Approach 1:
The MTC-IWF Proxy serves as an intermediary that enables communication capability between MNOs and MTC service providers without requiring the MNO to modify its internal signaling protocols. The proxy handles all protocol adaptation, authentication, and message formatting, allowing the MNO to maintain its protocol integrity and security while still achieving seamless communication with external service providers.
3Adaptability or versatility
If multiple MNOs and MTC service providers connect directly to each other, then full connectivity is achieved, but system complexity and authentication overhead increase significantly
Solution Approach 1:
The MTC-IWF Proxy provides universal functionality that serves multiple MNOs and multiple MTC service providers through a single deployment. It handles authentication, authorization, message routing, and protocol translation for all connected providers, eliminating the need for each MNO to establish separate direct connections with each service provider. This multi-functional approach achieves full connectivity while reducing system complexity.
4Ease of operation
If subscriber identifiers are mapped between MNO and MTC service provider domains, then seamless user experience is achieved, but security risks increase if identifiers are exposed
Solution Approach 1:
The MTC-IWF Proxy acts as a secure intermediary that performs identity mapping between MNO subscriber identifiers and MTC service provider identifiers. It maintains a mapping database that correlates these identifiers without exposing either set of identifiers to external parties. The proxy translates identifiers internally while ensuring that MNO subscriber identifiers remain confined within the MNO domain, thus maintaining user experience continuity while mitigating security risks.
Data Source
AI summary
A method of establishing connectivity between a mobile network operator (MNO) and a machine type communications (MTC) service provider. A machine type communications interworking function (MTC-IWF) Proxy is hosted on an IPX network service. MTC-IWF Proxy is connected to a MTC-IWF of the MNO and is also connected to a Service Capacities Center (SCS) of the MTC service provider. MTC-IWF Proxy connects to the MNO and the MTC service providers via trigger-service provider (Tsp) interface. Identity mapping services are provided between a first set of subscriber identifiers used by the MNO and a second set of subscriber identities used by the MTC service provider. The MTC-IWF Proxy hides the internal topology and relays signaling protocols used over a Tsp interface, thus enabling the MTC service providers and MNOs communicate without modifying their internal signaling protocols.