Radio communication apparatus, radio communication system and communication apparatus

• US 20030003973A1
• Filed: 06/21/2002
• Published: 01/02/2003
• Est. Priority Date: 10/23/2000
• Status: Abandoned Application

• Current Assignee: YOZAN, Inc.
• Original Assignee: YOZAN, Inc.
• Inventors: Kiyomatsu, Hisanori, Zhou, Changming
• Application Number:
  US10/168,655
• Publication Number:
  US 20030003973A1
• Time in Patent Office: Days
• US Class Current: 455/574
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A radio telecommunication apparatus 1 is provided with a pager receiver 2, cellular radio device 3, and a control portion 4 for controlling the entire apparatus and supplying power to the cellular radio device 3 according to a message received through the radio calling system. When located within an area of a radio calling system, the portable terminal 1 performs location registration to the radio calling system through the cellular system, disconnects power to the cellular radio device 3, and enters the radio calling standby state. When there is an incoming call to the cellular radio device 3, that portable terminal is called through the radio calling system and the power is turned on to the cellular radio device 3.

Claims

1. A radio telecommunication apparatus comprising:

a cellular system radio device;

a radio calling system receiver; and

a power control portion for controlling on and off of power to said cellular system radio device and the radio calling system receiver;

wherein said power control portion supplies power to the cellular system radio device in response to a signal received through the radio calling system by the radio calling system receiver.

2. A radio telecommunication apparatus comprising a cellular system radio device and a radio calling system receiver;

wherein power to the cellular system radio device is turned off after performing area registration to a radio calling system through a cellular system when the apparatus is located within a service area of the radio calling system; and

the cellular system radio device is supplied with power upon notification of an incoming call in the cellular system through the radio calling system.

3. A radio telecommunication system comprising:

a control station having functions of a cellular system control station and functions of a radio calling system central station;

cellular system base stations;

radio calling system base stations; and

a mobile radio telecommunication apparatus comprising a cellular system radio device and a radio calling system receiver;

wherein the control station determines whether a radio telecommunication apparatus has carried out area registration to the radio calling system when there is an incoming call to the cellular system radio device of the radio telecommunication apparatus; and

if registered, the control station calls the radio telecommunication apparatus through the radio calling system, and if not registered, the control station calls through the cellular system; and

the radio telecommunication apparatus is adopted to turn off power to the cellular system radio device and enter into a standby state for the radio calling system after area registration is performed to the radio calling system through the cellular system, when the apparatus is located within a service area of the radio calling system.

4. The radio telecommunication system according to claim 3, wherein the control station stores the correspondence between areas for the radio calling system and cells for the cellular system;

and

area registration of the radio telecommunication apparatus to the radio calling system is automatically performed in the control station, from the results of location registration to the cellular system of the radio telecommunication apparatus and by referencing the correspondence between the area for the radio calling system and cells for the cellular system.

5. The radio telecommunication system according to claim 3 or 4, wherein the control station also sends pager information to the radio telecommunication apparatus through the radio calling system when radio telecommunication apparatus is called through the radio calling system.

6. A telecommunication apparatus comprising means for storing a correspondence table of numbers for cellular system radio devices and numbers for radio calling system receivers with each cellular system radio device and each radio calling system receiver being installing together in one radio telecommunication apparatus, and a control portion;

wherein the control portion is adopted to send a message instructing supply of power to a cellular system radio device to a radio calling system receiver if communication is not possible as a call is made to the cellular system radio device, and after a prescribed period of time, to make a call once more to the cellular system radio device.