JPH05153033A - Tdd type digital mobile telephone communication system - Google Patents

Abstract

PURPOSE:To provide a TDD type digital mobile telephone communication system capable of making communication by means of plural channels and transferring data in wider range than one time slot of sound data. CONSTITUTION:In the system provided with a mobile telephone communication system exchange 3, a radio base station equipment 4 and a mobile telephone terminal 5, a TDD system utilizing a same frequency for both transmission and reception is adopted for the radio communication between the radio base station equipment 4 and the mobile telephone terminal 5, 1 to N(number) of time slots are possessed corresponding to the amount of information contained in the communication signal and thus, the communication of a wide frequency range information signal can be made possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TDD digital mobile telephone communication system, and more particularly to a TDD digital mobile telephone communication system capable of performing broadband information communication.

[0002]

2. Description of the Related Art A conventional TDD digital mobile telephone communication system employs TDD technology (technology that uses the same frequency for transmission and reception) as a communication method between a radio base station apparatus and a mobile terminal. , N timeslots are used for transmission and reception of signals of N subscribers, and therefore a total of N time slots are used, and transmission and reception are performed at the same frequency in a time division manner. .. When a call is made from a mobile telephone terminal or a general public telephone network subscriber, one time slot out of N time slots is automatically assigned to the communication, and voice or information corresponding to one time slot. Are being sent and received.

[0003]

The above-mentioned conventional TDD digital mobile telephone communication system has a problem that broadband information cannot be communicated because the original purpose is to transmit voice data for one person.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a TDD digital mobile telephone communication system capable of communicating broadband information.

[0005]

A TDD digital mobile telephone communication system according to the present invention is a digital mobile telephone communication system having a digital exchange, a radio base station apparatus and a mobile telephone terminal. Adopting TDD system for wireless communication with mobile phone terminals,
By occupying 1 to N time slots according to the amount of information of the wireless communication, communication of signals of wide band information is enabled.

[0006]

In the TDD digital mobile telephone communication system according to the present invention, the radio communication between the radio base station apparatus and the mobile telephone terminal is performed by time-division multiplexing up and down radio signals. Since the TDD system that uses the same frequency for transmission and reception is adopted, it is possible to communicate using a plurality of channels, and data having a wider band than one time slot of voice data can be digitally moved by the TDD system. It becomes possible to transfer by the telephone communication system.

[0007]

Embodiments of the present invention will now be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a TDD digital mobile telephone communication system according to an embodiment of the present invention. When the mobile telephone terminal 5 is called from the fixed telephone 1 connected to the general public telephone network 2, the signal from the fixed telephone 1 passes through the general public telephone network 2 and the mobile telephone communication system switch 3. , Is transmitted as a radio signal from the radio base station device 4 and is transmitted to the mobile telephone terminal 5. Further, when the fixed telephone 1 is called from the mobile telephone terminal 5, the direction opposite to that when the fixed telephone 1 calls the mobile telephone terminal 5, that is, the mobile telephone terminal 5 → the wireless base station device 4 → the movement A signal is transmitted from the telephone communication system switch 3 to the general public telephone network 2 to the fixed telephone 1.

In the signal transmission process, the mobile telephone terminal 5 and the radio base station device 4 communicate with each other by radio signals, and the TDD system is adopted. That is, as in the configuration diagram of the TDD system time slot shown in FIG. 2, the uplink and downlink radio signals are multiplexed and transmitted in a time division manner, and the same frequency is used for transmission and reception. In addition, the uplink and downlink radio signals are divided into frames by a guard time (G).

FIG. 3 is a block diagram showing a method of allocating a plurality of time slots (TS) in a TDD digital mobile telephone communication system according to an embodiment of the present invention. In this wireless signal communication system, the system has a function of allocating a plurality of time slots to one mobile telephone terminal 5 when there is a request to send wideband data of a data amount for one time slot or more. Have inside.
The plurality of time slots, for example N time slots (NTS), are assigned to one frame shown in FIG. With this function, the TDD digital mobile telephone communication system according to the present invention is capable of multiplexing uplink and downlink radio signals in a time division manner and communicating using a plurality of channels. Is possible.

[0011]

As described above, the TDD according to the present invention
According to the digital mobile telephone communication system, since communication can be performed using a plurality of channels, data in a wider band than one time slot of voice data can be transmitted to TDD.
The method can be transferred in a digital mobile telephone communication system.

[Brief description of drawings]

FIG. 1 is a block diagram showing a TDD digital mobile telephone communication system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a TDD system time slot in a TDD system digital mobile telephone communication system according to an embodiment of the present invention.

FIG. 3 is a configuration diagram showing a method of allocating a plurality of time slots in a TDD digital mobile telephone communication system according to an embodiment of the present invention.

[Explanation of symbols]

 1; fixed telephone 2; general public telephone network 3; switch for mobile telephone communication system 4; wireless base station device 5; mobile telephone terminal

Claims (1)

[Claims] 1. In a digital mobile telephone communication system having a digital exchange, a radio base station apparatus and a mobile telephone terminal, the TDD system is adopted for radio communication between the radio base station apparatus and the mobile telephone terminal. Then, by occupying 1 to N time slots according to the amount of information of the wireless communication, it is possible to communicate a signal of wideband information, a TDD digital mobile telephone communication system.