Radio paging system using radio selective paging receiver

• US 5,973,614 A
• Filed: 11/26/1997
• Issued: 10/26/1999
• Est. Priority Date: 05/19/1995
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Yamashige, Kiyotaka, Yoshida, Toshio
• Primary Examiner(s): Zimmerman, Brian
• Assistant Examiner(s): WILSON JR, WILLIAM HALL
• Application Number:
  US08/978,677
• Time in Patent Office: 699 Days
• Field of Search: 340/825.44, 340/311.1, 340/825.48, 340/825.47, 455/11.1, 455/15, 455/7, 455/426, 455/526, 455/517, 455/575, 455/38.5, 455/31.1, 455/31.2, 455/31.3, 455/38.1, 455/38.2, 370/310, 370/312, 370/313, 370/315, 375/211, 375/220, 375/214, 1/1
• US Class Current: 340/7.21
• CPC Class Codes: H04W 84/00 Network topologies

Abstract

In a radio paging system, first and second radio units perform radio communication via a relay station. This system includes a radio selective paging receiver for receiving a radio wave from the relay station and generating a ringing tone to call a callee at the second radio unit when the first radio unit calls the second radio unit.

Claims

1. A radio paging system comprising:

first and second radio units performing radio communication via a relay station, said first radio unit generating a radio wave containing an ID of said second radio unit when said first radio unit calls said second radio unit;

a radio selective paging receiver having the same ID as said second radio unit, said radio selective paging receiver receiving said radio wave directly from said relay station and generating a ringing tone in response to said reception of said radio wave.

2. A system according to claim 1, wherein said relay station is a relay station in an MCA system.

3. A system according to claim 2, wherein said radio selective paging receiver comprises:

a receiving section including an antenna for receiving said radio wave from said relay station;

a demodulating section for demodulating the received radio wave;

a CPU having a determining section for comparing said ID of the radio selective paging receiver with a terminating station ID contained in the data demodulated by said demodulating section, and if the IDs coincide with each other, determining that the data is data for calling the radio selective paging receiver;

a RAM for storing the data determined as the data for calling the radio selective paging receiver;

a ringing tone generating section for generating said ringing tone, when said determining section determines that the data demodulated by said demodulating section is the data for calling said radio selective paging receiver; and

a display section for displaying an originating station ID contained in the data stored in said RAM.

4. A system according to claim 1, wherein said radio selective paging receiver comprises:

a receiving section including an antenna for receiving said radio wave from said relay station;

a demodulating section for demodulating the received radio wave;

a CPU having a determining section for comparing said ID of the radio selective paging receiver with a terminating station ID contained in the data demodulated by said demodulating section, and if the IDs coincide with each other, determining that the data is data for calling the radio selective paging receiver;

a RAM for storing the data determined as the data for calling the radio selective paging receiver;

a ringing tone generating section for generating said ringing tone, when said determining section determines that the data demodulated by said demodulating section is the data for calling said radio selective paging receiver; and

a display section for displaying an originating station ID contained in the data stored in said RAM.

5. A system according to claim 4, wherein said display section is further designed to display a reception time of the data determined as the data for calling the radio selective paging receiver by said determining section.

6. A system according to claim 4, wherein said display section is further designed to display a message contained in the data determined as the data for calling the radio selective paging receiver by said determining section.