D2D Relay Selection via Network Control Node Configuration
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Solution Overview
Problem
Current D2D communication technologies lack a solution for relay node selection in scenarios where network infrastructure is absent or unreliable, limiting the effectiveness of proximity services and high data rate communications.
Innovation Solution
A method where a network control node receives relay-related information from user equipment and determines a suitable relay node, sending device-to-device communication relay configuration information to the selected relay node to establish a communication relay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If D2D communication is implemented without network infrastructure, then proximity services and high data rate communications are enabled, but relay node selection capability is lost
Solution Approach 1:
User equipment autonomously determines relay nodes by evaluating relay-related information (signal quality, distance, capability) without requiring network control node intervention, enabling self-organized relay selection in infrastructure-less environments
Solution Approach 2:
User equipment pre-collects and evaluates relay-related information from surrounding devices before establishing D2D communication, allowing proactive relay node selection and avoiding communication interruptions
2Reliability
If user equipment autonomously selects relay nodes, then relay selection capability is restored, but system complexity increases
Solution Approach 1:
The system changes evaluation parameters from simple signal strength to comprehensive relay-related information including signal quality metrics, distance measurements, and device capability assessments, enabling more reliable relay selection through multi-parameter evaluation
Solution Approach 2:
The relay selection process is segmented into distinct evaluation dimensions (signal quality, distance, capability), allowing user equipment to systematically assess multiple criteria independently and combine results for final relay node determination
Data Source
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AI summary
Provided are a method for realizing device-to-device communication relay selection, a network control node and user equipment. The method includes: a network control node receiving relay-related information sent by user equipment and determining a relay node; and the network control node sending device-to-device communication relay configuration information to the determined relay node. In the technical solution, by sending relay-related information in a network to perform selection or configuration of a relay node, a corresponding solution is provided for a scenario for which relay selection is not provided, and thereby the selection of the relay node is realized.