Core Network Registration via Relay Devices for Out-of-Coverage Access
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Solution Overview
Problem
Communication devices outside network coverage or incapable of communicating with a base station face challenges in accessing network services, and existing methods are inadequate for handling such scenarios.
Innovation Solution
A method involving a communication device receiving registration and notification area information from another device within network coverage, determining registration or update procedures based on this information, and transmitting messages to the base station to manage communication with the network on behalf of child devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication device is out of network coverage, then the device cannot communicate with the base station directly, but the device still needs to access network services
Solution Approach 1:
The patent introduces a relay device (another communication device within network coverage) as an intermediary to enable indirect communication between the out-of-coverage device and the base station. The relay device forwards registration requests, notification area updates, and other signaling messages between the remote device and the network, allowing service access without direct base station contact.
2Reliability
If a communication device is incapable of communicating with a base station, then direct communication is impossible, but network service access is still required
Solution Approach 1:
The relay device acts as an adapter that bridges the capability gap. It performs protocol translation and message forwarding, enabling devices with limited communication capabilities to access network services indirectly. The relay device handles registration procedures, mobility management, and service request forwarding on behalf of the incapable device.
3Area of stationary object
If a relay device manages multiple child communication devices, then network coverage extension is improved, but device complexity increases
Solution Approach 1:
The relay device is designed with multi-functional capabilities to handle multiple child devices simultaneously. It maintains separate registration states and notification area information for each child device while using a unified processing framework. The device can manage multiple radio bearers and signaling connections in parallel, extending coverage to multiple devices without proportionally increasing complexity.
Solution Approach 2:
The relay device segments the management of multiple child devices by maintaining separate context information (registration area, notification area, security parameters) for each child device. This modular approach allows independent tracking and management of each device's state while using shared resource pools for signaling and processing, reducing overall system complexity.
4Loss of information
If registration procedures are performed for each child device individually, then network awareness of each device is improved, but signaling overhead increases
Solution Approach 1:
The relay device merges the registration procedures of multiple child devices by maintaining consolidated registration area information. Instead of each child device independently registering with the base station, the relay device performs unified registration management, combining signaling messages where possible and maintaining a centralized view of all child devices' registration states, thereby reducing duplicate signaling overhead while preserving network awareness.
Data Source
AI summary
The present disclosure relates to methods and apparatuses. According to some embodiments of the disclosure, a method includes: receiving, at a first communication device from a second communication device, first registration information of a last serving cell, the first registration information at least including a first tracking area code and the identity of the second communication device; and determining whether to perform a registration procedure for the second communication device based on the first registration information.