Network-Mediated D2D Discovery Reducing Radio Resource Waste
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Solution Overview
Problem
Existing technologies waste radio resources in restrictive Device to Device (D2D) discovery services due to continuous broadcasting for discovery code occupation of air interface resources.
Innovation Solution
A near field communication discovery method where a network side allocates a discovery identity to both the discovery terminal and the discovered terminal, allowing the discovery terminal to perform paging or broadcasting using this identity, thereby reducing unnecessary radio resource occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the discovery terminal continuously broadcasts discovery codes to enable restrictive D2D discovery, then the discovery service can be provided, but radio resources are wasted due to occupation of air interface resources
Solution Approach 1:
The patent extracts the discovery code broadcasting function from the discovery terminal and relocates it to the network side (eNodeB). The network side generates and broadcasts the discovery code on behalf of the terminal, eliminating the need for the terminal to occupy air interface resources continuously. This resolves the contradiction by maintaining discovery service capability while removing the harmful resource occupation.
Solution Approach 2:
The network side acts as an intermediary between the discovery terminal and the discovered terminal. Instead of direct terminal-to-terminal broadcasting, the network side mediates the discovery process by generating and transmitting discovery codes, thereby reducing direct radio resource consumption from terminals while maintaining the discovery function.
2Ease of operation
If the discovery terminal occupies air interface resources to broadcast discovery codes, then discovery can be performed, but unnecessary radio resource occupation occurs
Solution Approach 1:
The patent removes the resource-intensive broadcasting operation from the terminal device and transfers it to the network infrastructure. The terminal only needs to send a simple request and receive the discovery code, significantly reducing the quantity of radio resources consumed while maintaining ease of operation for the discovery function.
Solution Approach 2:
The network side creates a copy of the discovery code and broadcasts it instead of requiring the terminal to continuously transmit its own discovery code. This copying approach reduces the original terminal's resource burden while maintaining the discovery capability.
Data Source
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AI summary
The present invention discloses a near field communication discovery method, apparatus and system. Herein, the method includes: a discovery terminal receiving discovery information allocated by a network side to a discovered terminal, herein the discovery information includes a discovery identity, and the discovery information is transmitted by the network side to the discovered terminal; the discovery terminal performing paging or broadcasting using the discovery identity; and the discovery terminal receiving a response returned by the discovered terminal to determine that the discovered terminal is discovered.