Uplink Data Packet Copying for D2D Lawful Interception
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Solution Overview
Problem
Traditional lawful interception methods fail to ensure data packet monitoring in device-to-device (D2D) communication, as data packets do not pass through a core network, making it difficult to implement lawful interception in D2D communication scenarios.
Innovation Solution
A method where terminal devices send selected or all data packets to the network on an uplink, based on a reporting configuration, which includes timing, packet selection rules, and sampling ratios, allowing the network to perform lawful data listening during D2D transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data packets are transmitted directly between terminals in D2D communication, then transmission latency is reduced and wireless resource utilization is improved, but lawful interception capability is lost because data packets do not pass through the core network
Solution Approach 1:
The terminal device creates a copy of the data packet and sends it through the network to the lawful interception unit, while the original packet continues its direct D2D transmission path. This copying approach allows lawful interception without affecting the low-latency direct transmission between terminals.
Solution Approach 2:
The patent introduces an intermediary mechanism where the terminal device acts as a mediator by receiving configuration information from the network, selecting data packets according to selection rules, and forwarding copies to the network for lawful interception. This intermediary approach enables lawful interception capability while preserving direct D2D communication paths.
2Reliability
If all data packets are sent to the network for lawful interception, then lawful interception capability is ensured, but network overhead and terminal device complexity increase
Solution Approach 1:
The patent changes the parameter of data packet selection by introducing selection rules that determine which packets are copied and sent to the network. Instead of sending all packets, the terminal device selectively copies packets based on configured criteria, reducing network overhead and terminal complexity while maintaining lawful interception capability.
Solution Approach 2:
The patent applies partial action by sending only a subset of data packets (copies) to the network for lawful interception, rather than all packets. This partial approach reduces the burden on the terminal device and network while still ensuring that relevant data is available for interception purposes.
Data Source
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AI summary
A method for reporting information, a terminal device, a network device, and a computer storage medium is provided. The method includes: sending data packets on uplink, the data packets being data packets successfully transmitted and/or to be transmitted in device-to-device data transmission of the terminal device.