Communication system, portable communication device, and wireless communication method for emergency transmission

Patent metadata

Field	Value
Publication number	US-9872161-B2
Application number	US-201514697799-A
Country	US
Kind code	B2
Filing date	Apr 28, 2015
Priority date	May 7, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A communication system includes a wireless master device, a wireless client device, and a base station, wherein, the wireless client device starts wireless transmission to the base station when the wireless client device receives a start instruction sent from the wireless master device in accordance with a predetermined operation performed with respect to the wireless master device and stops the wireless transmission when the wireless client device receives a stop instruction from the wireless master device after the starting of the wireless transmission.

First claim

What is claimed is:

1. A communication system comprising:
a wireless master device; and
a wireless client device that communicates with the wireless master device and a base station, wherein the wireless client device:
stores a first client device ID and a first master device ID in a memory included in the wireless client device, the first client device ID being an ID that is unique to the wireless client device, the first master device ID being an ID that is unique to the wireless master device;
starts wireless transmission to the base station when the wireless client device receives a start instruction from the wireless master device and the first client device ID matches a second client device ID and the first master device ID matches a second master device ID, the second client device ID and the second master device ID being included in the start instruction, the second client device ID being an ID that is unique to the wireless client device, the second master device ID being an ID that is unique to the wireless master device; and
stops the wireless transmission when the wireless client device receives a stop instruction from the wireless master device after the starting of the wireless transmission and the first client device ID matches a third client device ID and the first master device ID matches a third master device ID, the third client device ID and the third master device ID being included in the stop instruction, the third client device ID being an ID that is unique to the wireless client device, the third master device ID being an ID that is unique to the wireless master device.

2. A portable communication device that communicates with another communication device and a base station, the portable communication device comprising:
a memory; and
a processor coupled to the memory, wherein
the processor executes a process comprising:
storing a first client device ID and a first master device ID in the memory, the first client device ID being an ID that is unique to the portable communication device, the first master device ID being an ID that is unique to the other communication device;
starting wireless transmission to the base station when a start instruction from the other communication device is received and the first client device ID matches a second client device ID and the first master device ID matches a second master device ID, the second client device ID and the second master device ID being included in the start instruction, the second client device ID being an ID that is unique to the portable communication device, the second master device ID being an ID that is unique to the other communication device; and
stopping the wireless transmission when a stop instruction from the other communication device is received after the starting of the wireless transmission and the first client device ID matches a third client device ID and the first master device ID matches a third master device ID, the third client device ID and the third master device ID being included in the stop instruction, the third client device ID being an ID that is unique to the portable communication device, the third master device ID being an ID that is unique to the other communication device.

3. The portable communication device according to claim 2 , wherein, in a state in which the portable communication device is located within a predetermined distance from the other communication device, when a predetermined time elapses from the starting of the wireless transmission, the processor stops the wireless transmission regardless of whether the stop instruction is received.

4. A wireless communication method performed in a communication system that includes a wireless master device, and a wireless client device that communicates with the wireless master device and a base station, the wireless communication method comprising:
storing, by the wireless client device, a first client device ID and a first master device ID in a memory included in the wireless client device, the first client device ID being an ID that is unique to the wireless client device, the first master device ID being an ID that is unique to the wireless master device;
sending, by the wireless master device, a start instruction to the wireless client device;
starting, by the wireless client device, wireless transmission to the base station when the start instruction is received and the first client device ID matches a second client device ID and the first master device ID matches a second master device ID, the second client device ID and the second master device ID being included in the start instruction, the second client device ID being an ID that is unique to the wireless client device, the second master device ID being an ID that is unique to the wireless master device; and
stopping, by the wireless client device, the wireless transmission when a stop instruction is received from the wireless master device after the starting of the wireless transmission and the first client device ID matches a third client device ID and the first master device ID matches a third master device ID, the third client device ID and the third master device ID being included in the stop instruction, the third client device ID being an ID that is unique to the wireless client device, the third master device ID being an ID that is unique to the wireless master device.

5. A non-transitory computer-readable recording medium having stored therein a communication control program used by a portable communication device that includes a first communication module that is capable of communicating with a base station, a second communication module that is capable of communicating with another communication device, and a processor, the communication control program causing the processor to execute a process comprising:
storing a first client device ID and a first master device ID in a memory included in the portable communication device, the first client device ID being an ID that is unique to the portable communication device, the first master device ID being an ID that is unique to the other communication device;
starting wireless transmission to the base station when a start instruction from the other communication device is received and the first client device ID matches a second client device ID and the first master device ID matches a second master device ID, the second client device ID and the second master device ID being included in the start instruction, the second client device ID being an ID that is unique to the portable communication device, the second master device ID being an ID that is unique to the other communication device; and
stopping the wireless transmission when a stop instruction from the other communication device is received after the starting of the wireless transmission and the first client device ID matches a third client device ID and the first master device ID matches a third master device ID, the third client device ID and the third master device ID being included in the stop instruction, the third client device ID being an ID that is unique to the portable communication device, the third master device ID being an ID that is unique to the other communication device.

Assignees

• Fujitsu Ltd

Inventors

• Nishimura Satoshi

Classifications

• G08B25/001

  Alarm cancelling procedures or alarm forwarding decisions, e.g. based on absence of alarm confirmation · CPC title

• H04W4/70

  Services for machine-to-machine communication [M2M] or machine type communication [MTC] · CPC title

• G08B15/004

  using portable personal devices (hand-held or body-worn self-defence devices using repellent gases or chemicals F41H9/10) · CPC title

• H04W4/025

  using location based information parameters · CPC title

• G08B25/016

  Personal emergency signalling and security systems (emergency non-personal manually actuated alarm activators G08B25/12) · CPC title