Device Beacon for WWAN Peer-to-Peer Link Establishment

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Solution Overview

Problem

Conventional wireless communication systems are limited in that the presence of one wireless communication device is unknown to another device, even though peer-to-peer communication is advantageous or desired, as they lack a mechanism to detect and establish direct communication links between devices without relying on base stations or access nodes.

Innovation Solution

A wireless communication device transmits a device beacon signal in accordance with the timing of a wireless wide area network (WWAN), allowing peer-to-peer communication sessions to be established when another device detects the beacon, using WWAN uplink channels or separate frequency bands to minimize interference and ensure detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional wireless communication systems are used, then base stations or access nodes can establish communication links, but the presence of one wireless communication device is unknown to another device, preventing direct peer-to-peer communication

Engineering Contradiction:

Improvepeer-to-peer communication capabilityVSAvoiddevice presence information

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The device transmits a beacon signal in advance to announce its presence and capabilities to other devices in the network. This preliminary action enables other devices to detect and initiate peer-to-peer communication without requiring base station intervention, directly resolving the information asymmetry problem

Inventive Principle:

Principle #10Preliminary action

2Object-affected harmful factors

If device beacon signals are transmitted in separate frequency bands, then interference with WWAN channels is minimized, but the complexity of frequency management increases

Engineering Contradiction:

Improveinterference with WWAN channelsVSAvoidfrequency management complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The beacon signal is transmitted in the time domain by utilizing idle uplink time slots of the WWAN system, rather than occupying separate frequency bands. This dimensional shift from frequency to time domain allows interference-free beacon transmission while maintaining compatibility with existing WWAN frequency allocations and avoiding additional frequency management complexity

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11336495B2Device beacon for communication management for peer to peer communications

Publication Date: 2022.05.17 KYOCERA CORP

AI summary

A wireless communication device transmits a device beacon in accordance with a system timing of a wireless wide area network (WWAN). For one example, the beacon is transmitted relative to WWAN uplink channels of the time-frequency space of the uplink WWAN channel assignment. In response to the reception of the device beacon by another wireless communication device, a peer to peer communication session is established.