Relay UE Remote Information Transmission for Lawful Interception
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Solution Overview
Problem
Current technologies face challenges in facilitating lawful interception, efficient message transmission, group communication management, network registration, broadcast-related signaling, and call connections in 5G communication systems, particularly in IoT and CIoT environments, where traditional methods are inadequate for ensuring security and quality.
Innovation Solution
A method involving a relay user equipment (UE) that transmits remote UE information to a mobility management entity (MME) for lawful interception and CIoT network operations, including IP address and user information, to enable secure and efficient communication and registration processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a remote UE accesses the network via a ProSe UE-network relay, then network coverage and connectivity are improved, but lawful interception capability deteriorates due to lack of direct network visibility
Solution Approach 1:
The relay UE acts as an intermediary that forwards not only user data but also lawful interception related messages between the remote UE and the network. The network entities (MME, HSS, GW) serve as mediators to route interception information through the relay UE to the remote UE, enabling lawful interception capability to be maintained despite the indirect connection path.
2Device complexity
If traditional interception methods are used in relay scenarios, then implementation complexity is reduced, but interception effectiveness deteriorates due to indirect communication paths
Solution Approach 1:
The patent extends existing lawful interception mechanisms to handle relay scenarios by making the interception system multi-functional. The same interception infrastructure can now handle both direct and relayed connections by routing interception information through appropriate network entities that understand the relay topology, without requiring separate dedicated systems.
3Ease of operation
If remote UE information is transmitted through relay UE, then network registration and management are improved, but message size and signaling overhead increase
Solution Approach 1:
The patent combines remote UE information with existing relay management signaling messages. Instead of sending separate dedicated messages for remote UE registration and management, the information is merged into existing signaling flows between the relay UE and network entities, reducing overall signaling overhead while maintaining complete registration functionality.
Data Source
AI summary
The disclosure relates to a communication technique for converging, with an IoT technology, a 5G communication system for supporting a higher data transmission rate than a 4G system, and a system therefor. The disclosure may be applied to intelligent services, such as smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, and security and safety related services, on the basis of 5G communications technologies and IoT-related technologies. A method for operating relay UE in a mobile communication system includes transmitting, to a network node connected to the relay UE, a remote UE report message including remote UE information about a remote UE accessing a network via the relay UE, wherein the remote UE information includes IP address information allocated to the remote UE; starting a timer upon transmitting the remote UE report message to the network node; receiving, from the network node, a response message in reply to the remote UE report message; and stopping the timer upon receipt of the response message from the network node. the IP address information includes an IP address and port information of the remote UE in case that IPv4 is used as an address type.