Mobile radio communication system utilizing mode designation

• US 5,493,693 A
• Filed: 04/12/1994
• Issued: 02/20/1996
• Est. Priority Date: 07/09/1990
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation), Toshiba Corporation
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Tanaka, Masayuki, Ito, Koichi
• Primary Examiner(s): Pham, Chi H.
• Application Number:
  US08/226,686
• Time in Patent Office: 679 Days
• Field of Search: 455/33.1, 455/33.2, 455/54.1, 455/54.2, 455/73, 455/78, 455/89, 455/34.1, 375/5, 375/216, 379/59, 379/58, 379/60, 379/63
• US Class Current: 455/403
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A mobile radio communication system is provided with a base station apparatus connected to a wire circuit, a mobile radio station apparatus which is connected to the base station apparatus by means of a radio circuit, a mode designation device for selecting either an analog mode or a digital mode when radio communication is to be performed between the base station apparatus and the mobile radio station apparatus, and a mode-informing device for informing the base station apparatus of the mode designated by the mode designation device.

Claims

1. A mobile radio communication system comprising:

a base station apparatus connected to a wire network; and

a mobile radio station apparatus which is connected to said base station apparatus via a radio network, said mobile radio station apparatus including;

mode designating means for designating one of a plurality of modes;

mode-informing means for recognizing the mode designated by said mode designating means and transmitting mode data indicating only the designated mode to said base station apparatus via said radio network; and

shift rejecting means for rejecting a shift from the one designated mode to a non-designated mode during a hand-off process from said base station apparatus.

2. A mobile radio communication system according to claim 1, wherein said plurality of modes includes an analog mode and a digital mode, and said mode designating means includes input means for designating only one of the digital mode and the analog mode.

3. A mobile radio communication system according to claim 1, wherein said mode-informing means inserts the mode data into control data for transmission to said base station apparatus.

4. A mobile radio communication system according to claim 1, wherein said mode-informing means includes a memory for storing the mode data.

5. A mobile radio communication system according to claim 1, wherein said base station apparatus includes means for recognizing the mode data sent from said mobile radio station and means for executing radio communication therewith only with the designated mode indicated by the mode data.

6. The system of claim 1, wherein said shift rejecting means comprises a switch operable by a user of said mobile radio station apparatus and means for transmitting shift rejection information to said base station apparatus.

7. A mobile radio station apparatus comprising:

means for communicating, via a radio network, with a base station apparatus connected to a wire network;

mode designating means for designating one of a plurality of modes for communicating with said base station apparatus;

mode-informing means for recognizing said one designated mode designated by said mode designating means and transmitting mode data indicating said one designated mode to said base station apparatus via said radio network; and

means for rejecting a shift from the one designated mode to a non-designated mode during a hand-off process from said base station apparatus.

8. The apparatus of claim 7, wherein said shift rejecting means comprises a switch operable by a user of said mobile radio station apparatus and means for transmitting shift rejection information to said base station apparatus.

9. The apparatus of claim 7, wherein said shift rejecting means comprises:

means for transmitting a mode-shift rejection signal to said base station apparatus when a digital mode of communication is changed to an analog mode of communication, and

means for indicating to a user of said mobile radio apparatus that the user should return to a first radio zone to continue said digital mode of communication.

10. The apparatus of claim 7, wherein said mode designating means designates one of an analog mode and a digital mode.

11. A mobile radio station apparatus comprising:

means for communicating, via a radio network, with a base station apparatus connected to a wire network;

mode designating means for designating one of an analog mode and a digital mode for communicating with said base station apparatus;

mode-informing means for recognizing said one designated mode designated by said mode designating means and transmitting mode data indicating said one designated mode to said base station apparatus via said radio network; and

indicating means, responsive to a message received from the base station apparatus, for indicating to a user whether the analog mode or the digital mode has been initiated between the mobile radio station apparatus and the base station apparatus.

12. The apparatus of claim 11, further comprising means for detecting whether the digital mode has been shifted to the analog mode, and generating an alarm to the user in response thereto.

13. The apparatus of claim 11, further comprising mode-shift rejection means, actuable by the user, for transmitting a mode-shift rejection signal to the base station apparatus to prevent the digital mode from being shifted into the analog mode.