Mobile communication position registering method and system therefor

• US 5,095,531 A
• Filed: 04/26/1989
• Issued: 03/10/1992
• Est. Priority Date: 08/28/1987
• Status: Expired due to Fees

• Current Assignee: Iwatsu Electric Company Limited
• Original Assignee: Iwatsu Electric Company Limited
• Inventors: Ito, Sadao
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): URBAN, EDWARD F
• Application Number:
  US07/348,662
• Time in Patent Office: 1,049 Days
• Field of Search: 455/33, 455/54, 455/56, 455/78, 455/51, 379/59, 379/60, 379/63
• US Class Current: 455/435.3
• CPC Class Codes: H04W 16/32 Hierarchical cell structures
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection

Abstract

A mobile communication system including a plurality of radiotelephone base stations respectively covering a plurality of cells to define in combination a service area, a mobile unit capable of communicating with the radiotelephone base stations, and a radiotelephone control unit for connecting together each of the base stations and an ordinary telephone network, setting up and releasing a speech path between the each radiotelephone base station and the mobile unit, and adding a speech path for communication with another radiotelephone base station which is able to communicate with the mobile unit as it moves. The mobile unit is adapted to transmit and receive a plurality of channels at the same time so that it is capable of communicating with a plurality of radiotelephone base stations and registering its position to these base stations. The mobile unit successively registers its position to radiotelephone base stations with which it can communicate as it moves, so that the mobile unit can communicate with a telephone set in the telephone network without instantaneous disconnection via all the base stations where it has registered the position.

Claims

1. A communication method for a mobile communication network including a plurality of radiotelephone base station means respectively covering a plurality of cells to define in combination a service area, mobile unit means present in said service area, and radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, said method comprising:

detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means, presuming the destination of said mobile unit means, checking the communication traffic condition at the radiotelephone base station means located at the destination of said mobile unit means, and reducing, when the communication traffic is congested, the number of radiotelephone base station means engaged in communication with other mobile unit means which are in communication with said radiotelephone base station means located at the destination of said mobile unit means according to the kind of communication held by said other mobile unit means, in said radiotelephone control means while said mobile unit means is in communication with a plurality of radiotelephone base station means which are in the vicinity of it, thereby;

setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means and also renewing the radiotelephone base station means engaged in communication so that it is possible to change speech paths from one to another, and enabling communication between said mobile unit means and said at least two radiotelephone base station means.

2. A communication method for a mobile communication network including a plurality of radiotelephone base station means respectively covering a plurality of cells to define in combination a service area, mobile unit means present in said service area, and radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, said method comprising:

detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means and allotting preferentially a radio channel which enables a predetermined level of speech quality to be ensured among radio channels belonging to radiotelephone base station means located in the detected direction of movement of said mobile unit means when an operation of channel hand-off during communication is executed, in said radiotelephone control means while said mobile unit means is in communication with a plurality of radiotelephone base station means which are in the vicinity of it, thereby;

setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means and also renewing the radiotelephone base station means engaged in communication so that it is possible to change speech paths from one to another, and enabling communication between said mobile unit means and said at least two radiotelephone base station means.

3. A communication method for a mobile communication network including a plurality of radiotelephone base station means respectively covering a plurality of cells to define in combination a service area, mobile unit means present in said service area, and radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, said method comprising:

detecting a direction and speed of movement of said mobile unit means as well as the position thereof on the basis of changes in communication quality including electric field received by a plurality of radiotelephone base station means which are in communication with said mobile unit means, in said radiotelephone control means, thereby;

setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means and also renewing the radiotelephone base station means engaged in communication so that it is possible to change speech paths from one to another, and enabling communication between said mobile unit means and said at least two radiotelephone base station means.

4. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

radio receiver means including a receiving mixer for receiving an allotted radio channel;

receiving synthesizer means for applying to said receiving mixer a frequency required to receive said allotted radio channel;

radio transmitter means including a transmitting mixer for transmitting an allotted radio channel;

transmitting synthesizer means for applying to said transmitting mixer a frequency required to transmit said allotted radio channel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means;

quality supervisory means for supervising the communication quality of a signal which is being received by said receiver means and outputting communication quality information;

ID recognition memory means for storing said identification information registered at said radiotelephone control means; and

control means for allotting a radio channel to be received to said receiving synthesizer means and a radio channel to be transmitted to said transmitting synthesizer means on the basis of said identification information stored in said ID recognition memory means, and for determining whether or not said radiotelephone base station means should participate in said communication by taking into consideration the order of priority given to predetermined kinds of communication, when the communication traffic varies in the area covered by said radiotelephone base station means engaged in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

5. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel;

transmitting synthesizer means for generating frequencies required to transmit i down radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means; and

control means for allotting frequencies to be generated to said receiving and transmitting synthesizer means and also giving switching instructions to said receiving and transmitting channel switching means, and for determining whether or not said radiotelephone base station means should participate in said communication by taking into consideration the order of priority given to predetermined kinds of communication, when the communication traffic varies in the area covered by said radiotelephone base station means engaged in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

6. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, and for determining whether or not said radiotelephone base station means should participate in said communication by taking into consideration the order of priority given to predetermined kinds of communication, when the communication traffic varies in the area covered by said radiotelephone base station means engaged in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

7. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means, receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel, transmitting synthesizer means for generating frequencies required to transmit i up radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, and transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, and for determining whether or not said radiotelephone base station means should participate in said communication by taking into consideration the order of priority given to predetermined kinds of communication, when the communication traffic varies in the area covered by said radiotelephone base station means engaged in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

8. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

radio receiver means including a receiving mixer for receiving an allotted radio channel;

receiving synthesizer means for applying to said receiving mixer a frequency required to receive said allotted radio channel;

radio transmitter means including a transmitting mixer for transmitting an allotted radio channel;

transmitting synthesizer means for applying to said transmitting mixer a frequency required to transmit said allotted radio channel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means;

quality supervisory means for supervising the communication quality of a signal which is being received by said receiver means and outputting communication quality information;

ID recognition memory means for storing said identification information registered at said radiotelephone control means; and

control means for allotting a radio channel to be received to said receiving synthesizer means and a radio channel to be transmitted to said transmitting synthesizer means on the basis of said identification information stored in said ID recognition memory means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means, presuming the destination of said mobile unit means, checking the communication traffic condition at the radiotelephone base station means located at the destination of said mobile unit means, and for effecting control, when the communication traffic is congested, such that the communication between other mobile unit means which are in communication with said radiotelephone base station means at the destination of said mobile unit means and other radiotelephone base station means is stopped according to the kind of communication held by said other mobile unit means, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

9. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel;

transmitting synthesizer means for generating frequencies required to transmit i down radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means; and

control means for allotting frequencies to be generated to said receiving and transmitting synthesizer means and also giving switching instructions to said receiving and transmitting channel switching means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means, presuming the destination of said mobile unit means, checking the communication traffic condition at the radiotelephone base station means located at the destination of said mobile unit means, and for effecting control, when the communication trraffic is congested, such that the communication between other mobile unit means which are in communication with said radiotelephone base station means at the destionation of said mobile unit means and other radiotelephone base station means is stopped according to the kind of communication held by said other mobile unit means, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

10. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means, presuming the destination of said mobile unit means, checking the communication traffic condition at the radiotelephone base station means located at the destination of said mobile unit means, and for effecting control, when the communication traffic is congested, such that the communication between other mobile unit means which are in communication with said radiotelephone base station means at the destination of said mobile unit means and other radiotelephone base station means is stopped according to the kind of communication held by said other mobile unit means, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

11. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means, receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel, transmitting synthesizer means for generating frequencies required to transmit i up radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, and transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means, presuming the destination of said mobile unit means, checking the communication traffic condition at the radiotelephone base station means located at the destination of said mobile unit means, and for effecting control, when the communication traffic is congested, such that the communication between other mobile unit means which are in communication with said radiotelephone base station means at the destination of said mobile unit means and other radiotelephone base station means is topped according to the kind of communication held by said other mobile unit means, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

12. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

radio receiver means including a receiving mixer for receiving an allotted radio channel;

receiving synthesizer means for applying to said receiving mixer a frequency required to receive said allotted radio channel;

radio transmitter means including a transmitting mixer for transmitting an allotted radio channel;

transmitting synthesizer means for applying to said transmitting mixer a frequency required to trransmit said allotted radio channel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means;

quality supervisory means for supervising the communication quality of a signal which is being received by said receiver means and outputting communication quality information;

ID recognition memory means for storing said identification information registered at said radiotelephone control means; and

control means for allotting a radio channel to be received to said receiving synthesizer means and a radio channel to be transmitted to said transmitting synthesizer means on the basis of said identification information stored in said ID recognition memory means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means and for instructing another radiotelephone base station means located in the detected direction of movement of said mobile unit means to allot preferentially a radio channel which enables a predetermined level of speech quality to be ensured among radio channels belonging to said another radiotelephone base station means when an operation of channel hand-off during communication is executed, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

13. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel;

transmitting synthesizer means for generating frequencies required to transmit i down radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means; and

control means for allotting frequencies to be generated to said receiving and transmitting synthesizer means and also giving switching instructions to said receiving and transmitting channel switching means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means and for instructing another radiotelephone base station means located in the detected direction of movement of said mobile unit means to allot preferentially a radio channel which enables a predetermined level of speech quality to be ensured among radio channels belonging to said another radiotelephone base station means when an operation of channel hand-off during communication is executed, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

14. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means and for instructing another radiotelephone base station means located in the detected direction of movement of said mobile unit means to allot preferentially a radio channel which enables a predetermined level of speech quality to be ensured among radio channels belonging to said another radiotelephone base station means when an operation of channel hand-off during communication is executed, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

15. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means, receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel, transmitting synthesizer means for generating frequencies required to transmit i up radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, and transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, for detecting a direction and speed of movement of said mobile unit means on the basis of changes in receiving quality including electric field received by said plurality of radiotelephone base station means and for instructing another radiotelephone base station means located in the detected direction of movement of said mobile unit means to allot preferentially a radio channel which enables a predetermined level of speech quality to be ensured among radio channels belonging to said another radiotelephone base station means when an operation of channel hand-off during communication is executed, while said mobile unit means is in communication with a plurality of radiotelephone base station means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

16. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

radio receiver means including a receiving mixer for receiving an allotted radio channel;

receiving synthesizer means for applying to said receiving mixer a frequency required to receive said allotted radio channel;

radio transmitter means including a transmitting mixer for transmitting an allotted radio channel;

transmitting synthesizer means for applying to said transmitting mixer a frequency required to transmit said allotted radio channel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means;

quality supervisory means for supervising the communication quality of a signal which is being received by said receiver means and outputting communication quality information;

ID recognition memory means for storing said identification information registered at said radiotelephone control means; and

control means for allotting a radio channel to be received to said receiving synthesizer means and a radio channel to be transmitted to said transmitting synthesizer means on the basis of said identification information stored in said ID recognition memory means, and for detecting a direction and speed of movement of said mobile unit means as well as the position thpereof on the basis of changes in communication quality including electric field received by a plurality of radiotelephone base station means which are in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

17. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel;

transmitting synthesizer means for generating frequencies required to transmit i down radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n;

transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

standard frequency oscillator means for supplying a standard frequency to both said receiving and transmitting synthesizer means; and

control means for allotting frequencies to be generated to said receiving and transmitting synthesizer means and also giving switching instructions to said receiving and transmitting channel switching means, and for detecting a direction and speed of movement of said mobile unit means as well as the position thereof on the basis of changes in communication quality including electric field received by a plurality of radiotelephone base station means whcih are in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

18. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, and for detecting a direction and speed of movement of said mobile unit means as well as the position thereof on the basis of changes in communication quality including electric field received by a plurality of radiotelephone base station means which are in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.

19. A mobile communication system comprising:

a plurality of radiotelephone base station means, each of which includes;

common antenna means;

a plurality of transmitter-receiver means each including a pair of transmitter and receiver means connected to said common antenna means, receiving synthesizer means for generating frequencies required to receive i up radio channels among n up radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, receiving channel switching means for successively switching the outputs of said receiving synthesizer means so that it is possible to receive said i up radio channels in parallel, transmitting synthesizer means for generating frequencies required to transmit i up radio channels among n down radio channels, i being equal to or greater than 2 and equal to or smaller than n, i.e., 2≦

i≦

n, and transmitting channel switching means for successively switching the outputs of said transmitting synthesizer means so that it is possible to transmit said i down radio channels in parallel;

a plurality of quality supervisory means for supervising the communication quality at said transmitter-receiver means;

at least one control transmitter-receiver means for transmitting and receiving control signals; and

control means for allotting radio channels to be transmitted and received to said plurality of transmitter-receiver means and to said at least one control transmitter-receiver means and also allotting radio channels to be supervised to said plurality of quality supervisory means, and for detecting a direction and speed of movement of said mobile unit means as well as the position thereof on the basis of changes in communication quality including electric field received by a plurality of radiotelephone base station means which are in communication with said mobile unit means, respectively covering a plurality of cells to define in combination a service area, communicating with each of mobile unit means which presents in said service area and registering information of the position of said mobile unit means; and

radiotelephone control means for connecting together each of said base station means and an ordinary telephone network, setting up and releasing speech paths between at least two of said radiotelephone base station means and said mobile unit means, and adding a speech path for communication with another radiotelephone base station means which is able to communicate with said mobile unit means as it moves, in accordance with said information registered in said mobile unit means.