Wireless Terminal Interterminal Relay for Base Station Failure Recovery

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Solution Overview

Problem

In conventional wireless cellular systems, communication failures between wireless communication terminals and base stations result in data loss and significant delays due to unknown reasons, leading to inefficiencies in reestablishing communication.

Innovation Solution

A wireless communication system that employs interterminal communication to facilitate data transmission and reconnection by using adjacent terminals to relay data between base stations and terminals, allowing for efficient communication resumption even when the primary connection is lost.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the wireless communication terminal selects another base station as the reconnected base station when communication failure occurs, then the terminal can resume communication, but all data retained in the original base station during transmission standby state will be lost causing significant communication delay

Engineering Contradiction:

Improvecommunication resumptionVSAvoidcommunication delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The base station stores untransmitted data in the terminal before communication failure occurs. When failure is detected, the terminal uses stored identification information to quickly reconnect to the same base station without needing to search for alternative base stations, thereby avoiding data loss and reducing reconnection delay.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The base station sends identification information to the terminal during normal operation. When communication failure occurs, the terminal uses this feedback identification information to rapidly reconnect to the original base station, eliminating the need for base station selection and minimizing data loss.

Inventive Principle:

Principle #23Feedback

2Reliability

If the wireless communication terminal fails to discover an appropriate base station as the reconnected base station, then the terminal cannot resume communication, but the system lacks mechanisms to ensure successful reconnection

Engineering Contradiction:

Improvecommunication resumptionVSAvoidbase station discovery mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The base station stores identification information of the terminal before communication failure. This preliminary storage of identification data enables the terminal to automatically reconnect to the original base station without needing to perform complex base station discovery procedures, thereby ensuring reliable reconnection while simplifying the search mechanism.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP2871911B1Wireless communication terminal, base station, wireless communication method, communication method, wireless communication program, communication program, and wireless communication system

Publication Date: 2020.09.02 KDDI CORP

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AI summary

A wireless communication terminal includes a base station communication part which communicates with a base station; an interterminal communication part which communicates with another wireless communication part; a communication failure detector which detects a communication failure with a first connected base station serving as a base station connected thereto; and a communication resume processor which carries out an interterminal communication with another wireless communication terminal so as to communicate with a second connected base station, connected to another wireless communication terminal, via another wireless communication terminal when a communication failure is detected with the first connected base station, thus carrying out a process of resuming a communication upon detecting the communication failure.