Device Group RRC Connection Sharing for Wireless Load Reduction

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Solution Overview

Problem

The increasing number of connected mobile devices in close proximity within a wireless network leads to inefficient management of radio resources and increased capacity usage, as each device independently communicates with an LTE base station, necessitating a method to optimize communication among multiple devices.

Innovation Solution

A communication method using a device group, where a primary device establishes and shares a radio resource control (RRC) connection with a base station, allowing secondary devices to communicate based on the primary device's connection, thereby reducing the load on the network.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If each device independently establishes RRC connection with base station, then communication reliability is improved, but network load and radio resource consumption increase proportionally with number of devices

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidnetwork load

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

Multiple secondary devices are merged into a single device group that shares one RRC connection with the base station through the primary device. This combining approach allows multiple devices to communicate reliably while reducing the total number of RRC connections from N (one per device) to 1 (shared by all devices in the group), thereby significantly reducing network load and radio resource consumption.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The primary device acts as an intermediary between secondary devices and the base station. It establishes and maintains the RRC connection, managing uplink and downlink communications for the entire device group. This intermediary role allows secondary devices to communicate with the network without establishing individual RRC connections, thus maintaining communication reliability while reducing network load.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If each device independently performs communication management, then device autonomy is improved, but information management complexity and radio resource capacity increase with number of connected devices

Engineering Contradiction:

Improvedevice autonomyVSAvoidinformation management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system is segmented into three functional roles: base station (network management), primary device (connection management), and secondary devices (data communication). This segmentation allows secondary devices to maintain autonomy for data communication while delegating RRC connection management to the primary device, reducing information management complexity without sacrificing device functionality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The primary device performs multiple functions: it acts as a normal communication device for its own data transmission while simultaneously serving as an RRC connection manager for the entire device group. This multi-functionality reduces the need for separate management mechanisms, thereby reducing information management complexity while maintaining device autonomy.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10645539B2Communication method using device group and device using same

Publication Date: 2020.05.05 LG ELECTRONICS INC

AI summary

Provided is a communication method using a device group, which includes a first device and a second device, in a wireless communication system. The first device establishes radio resource control (RRC) connection with a base station instead of the second device, and shares the RRC connection with the second device.