Radio telephone system

• US 4,852,148 A
• Filed: 06/15/1988
• Issued: 07/25/1989
• Est. Priority Date: 06/19/1987
• Status: Expired due to Term

• Current Assignee: NTT Mobile Communications Network Inc. (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NEC Corporation, Nippon Telegraph and Telephone Corporation, Matsushita Communication Industrial Corporation of USA (Panasonic Holdings Corporation)
• Inventors: Sato, Mitsuo, Shibata, Toshihiko, Nagashima, Noriaki, Murata, Yoshitoshi
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/206,673
• Time in Patent Office: 405 Days
• Field of Search: 379/56, 379/58, 379/61, 379/62, 379/63, 379/59, 455/127, 455/343
• US Class Current: 455/435.1
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A radio telephone system has a radio telephone set which has a receiving circuit the power of which is turned on or off in predetermined cycles, a radio connector transmit an ID number of the radio zone where it exists for a longer period than the period of turning on or off the power supply of the receiving circuit of the radio telephone set in predetermined cycles, the radio telephone set compares the ID number of the radio zone received with that stored in a memory, and when the ID numbers fail to coincide with each other, the ID number of the radio telephone set and the ID number of the radio zone received are transmitted as a position entry signal to a radio channel control unit through the radio connector, and the radio channel control unit being adapted to register the ID number of the radio telephone set and that of the radio zone.

Claims

1. A radio telephone system including a plurality of radio telephone sets, a plurality of radio connectors and a radio channel control unit connected a telephone exchange used for general subscribers the radio telephone system comprising:

each of the ratio telephone sets including first memory means for storing an ID number of the radio telephone set, second memory means for storing an ID number of a radio zone in which the radio telephone set is presently located, and control means for turning on/off a power supply of a receiving circuit in first predetermined cycles;

each of the radio connectors being arranged in one of a plurality of radio zones and including means for transmitting the ID number of the radio zone to the radio telephone set in second predetermined cycles longer than the first predetermined cycle;

the radio channel control unit including a third memory means for storing the ID number of each of the radio telephone sets and the ID number of each of the radio zones in which each of the radio telephone sets is located by means of setting the correspondence of the two ID numbers;

wherein the radio telephone set compares the ID number of the radio zone provided by the radio connector with the ID number of the radio zone stored in the second memory means when receiving the provided ID number, and transmits both of the ID number of the radio telephone set stored in the first memory means and the received ID number of the radio zone to the radio connector as a position entry signal when the two compared ID numbers fail to coincide with each other, and after that the radio connector receiving the ID numbers of the radio telephone set stored in the first memory means and the radio zone sends the two received ID numbers to the radio channel control unit, and furthermore the radio channel control unit stores the ID number of the radio telephone set and that of the radio zone in the third memory.

2. A radio telephone system according to claim 1, wherein the transmission of the position entry signal from the radio telephone set to the radio connector is performed in a timing generated on the basis of the ID number of the radio telephone set.

3. A radio telephone system according to claim 1, wherein when the two ID numbers fail to coincide with each other a predetermined number of times successively in the plural comparisons as to the two ID numbers, the radio telephone set transmits the position entry signal to the radio connector.

4. A radio telephone system including a plurality of radio telephone sets, a plurality of a radio connectors and a radio channel control unit connected a telephone exchange used for general subscribers the radio telephone system comprising:

each of the radio telephone sets including first memory means for storing an ID number of the radio telephone set, second memory means for storing an ID number of a radio zone in which the radio telephone set is presently located, and control means for turning on/off a power supply of a receiving circuit in first predetermined cycles generated by a built-in timer;

each of the radio connectors arranged in one of radio zones and including means for transmitting the ID number of the radio zone to the radio telephone sets in second predetermined cycles longer than the first predetermined cycle;

the radio channel control unit including a third memory means for storing the ID number of each of the radio telephone sets and the ID number of each of the radio zones in which each of the radio telephone sets is located by means of setting the correspondence of the two ID numbers;

wherein the radio telephone set resets the timer for generating the first predetermined cycles and compares the ID number of the radio zone provided by the radio connector with the ID number of the radio zone stored in the second memory means when receiving the provided ID number, and transmits both of the ID number of the radio telephone set stored in the first memory means and the received ID number of the radio zone to the radio connector as a position entry signal when the two compared ID numbers fail to coincide with each other, and after that the radio connector receiving the ID numbers of the radio telephone set stored in the first memory means and the radio zone sends the two received ID numbers to the radio channel control unit, and furthermore the radio channel control unit stores the ID number of the radio telephone set and that of the radio zone in the third memory.

5. A radio telephone system according to claim 4, wherein the transmission of the position entry signal from the radio telephone set to the radio connector is performed in a timing generated on the basis of the ID number of the radio telephone set.

6. A radio telephone system according to claim 4, wherein when the two ID numbers fail to coincide with each other a predetermined number of times successively in the plural comparisons as to the two ID numbers, the radio telephone set transmits the position entry signal to the radio connector.

7. A radio telephone system according to claim 4, wherein the radio telephone set resets the timer at a time when, after receiving the ID number of the radio zone provided by the radio connector, comparing the provided ID number with the ID number of the radio zone stored in the second memory means and the compared two ID numbers coincide with each other.