Wireless Device Discovery via Network-Allocated Resources

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Solution Overview

Problem

Current wireless communication systems lack a mechanism for device discovery between two communication devices, which is essential for direct device-to-device communication, unlike traditional systems with central control.

Innovation Solution

A method for device discovery in a wireless communication system involves connecting to a network, sending a discovery request, receiving resource allocation, and transmitting a discovery signal, allowing interested devices to monitor and detect other devices based on signal reception.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If device-to-device communication is implemented without central control, then direct communication capability is improved, but device discovery mechanism is lacking

Engineering Contradiction:

Improvedirect communication capabilityVSAvoiddevice discovery mechanism

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The network acts as an intermediary to facilitate device discovery. The serving base station receives discovery requests from first devices, allocates resources, and enables second devices to monitor and receive discovery signals, thereby mediating the discovery process between devices without requiring them to directly discover each other in a decentralized manner

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The device discovery process is segmented into distinct functional components: discovery request transmission, resource allocation, discovery signal transmission, and discovery signal monitoring. This segmentation allows each component to be optimized independently while working together to enable direct device-to-device communication

Inventive Principle:

Principle #1Segmentation

2Productivity

If resource allocation is centralized through network control, then resource management efficiency is improved, but device discovery complexity increases

Engineering Contradiction:

Improveresource management efficiencyVSAvoiddevice discovery complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The network performs preliminary actions by pre-allocating resources for device discovery before actual device-to-device communication occurs. The serving base station allocates time-frequency resources and configures monitoring parameters in advance, reducing the complexity of real-time resource management during device discovery operations

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If discovery signals are transmitted on allocated resources, then device discovery accuracy is improved, but network resource consumption increases

Engineering Contradiction:

Improvedevice discovery accuracyVSAvoidnetwork resource consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

Resources are allocated locally and specifically for device discovery purposes rather than being uniformly distributed. The network allocates specific time-frequency resources dedicated to discovery signals, ensuring high discovery accuracy while minimizing overall network resource consumption by concentrating resources only where needed for discovery operations

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9392433B2Method of device discovery in wireless communication systems

Publication Date: 2016.07.12 HTC CORP

AI summary

A method of device discovery for a first communication device in a wireless communication system is disclosed. The method comprises connecting to a network of the wireless communication system, sending a discovery request to the network, receiving an allocated resource corresponding to the discovery request from the network, and sending a discovery signal on the allocated resource, whereby a second communication device of the wireless communication system interested in discovery monitors the allocated resource for receiving the discovery signal.