JPH07321734A - Data communication device - Google Patents

Abstract

(57) [Abstract] [Purpose] Reception of a mobile phone by using a current position detection (GPS) device in the mobile phone constituting a data communication device used in a mobile communication telephone system, a mobile communication data communication system, etc. Improve performance. [Structure] A current position detecting device 2 in a mobile phone 3 receives received waves from satellites 6, 7, and 8 from an antenna 1 and estimates a current position based on the received waves. The current position information is passed through the antenna 4 of the base station 5,
The base station 5 performs various operations based on the current position information so that the mobile phone 3 can perform optimal reception, and the base station 5 supplies the mobile phone 3 with transmission data to notify the demodulation method. By performing handoff or the like to the optimum base station, it is possible to improve the reception performance of the mobile phone 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication device used for a mobile communication telephone system, a mobile communication data communication system and the like.

[0002]

2. Description of the Related Art FIG. 3 is a system block diagram showing the structure of a conventional data communication apparatus of this type.
40 is a receiving antenna, 44 is a mobile phone, and receiving antenna 4
0, a power measuring unit 42 that measures the received power of the received signal from the receiving antenna 40, a handoff unit 43 that performs a handoff based on the received power of the received signals from the base stations 45 and 46, and demodulation that demodulates the received signal It is composed of a section 41.

Next, the operation of the above conventional example will be described. In FIG. 3, the mobile phone 44 measures the received signal power from the receiving antenna 40 by the power measuring unit 42, and when the power is low, for example, sets a control bit to the base station 45 in communication to increase the transmission power. Send. Also, the handoff unit 43
If the received signal power from the base station 46 that is not communicating is larger than the received signal power from the base station 45 that is currently communicating, then perform communication with the base station 46 that has a larger power. Take control.

As described above, in the above conventional data communication apparatus, the above-mentioned various controls are carried out by the mobile telephone 44.

[0005]

However, in the above-mentioned conventional data communication apparatus, since the portable telephone 44 performs handoff with the base station and transmission power control, the transmission power is reduced in the dead zone of the radio wave where the reception performance deteriorates. There was a problem that the deterioration could not be prevented even if it was raised.

The present invention solves such a conventional problem, and an object of the present invention is to provide a data communication apparatus in which the receiving performance is not deteriorated even in a dead zone of a radio wave.

[0007]

In order to achieve the above-mentioned object, the present invention uses a radio wave from a plurality of satellites in a portable telephone means having a communication means for performing data and voice communication with a base station. It has a current position detecting means for estimating the current position of the mobile phone means, and informs the base station of the current position by the communication means.

Further, the base station supplies the mobile phone with transmission data and a demodulation method capable of optimal reception at the current position of the mobile phone means, and performs handoff to the optimum base station.

[0009]

Therefore, according to the present invention, the base station obtains highly accurate position information of the mobile telephone means with which it is currently communicating, so that when the mobile telephone means is in the dead zone of the radio wave, even in the dead zone. Various controls can be performed so that the mobile phone means can receive optimally.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a system block diagram showing the basic configuration of a data communication apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an antenna that receives radio waves from a plurality of satellites 6, 7, and 8, and also transmits / receives to / from a base station antenna 4 of a base station 5. Reference numeral 2 denotes a current position detecting device (GPS) provided in the mobile phone 3, which estimates the current position using radio waves from the satellites 6, 7, and 8. The above-described mobile phone 3 has a communication device and performs data and voice communication with the base station 5 via the antenna 1 and the base station antenna 4.

To explain the outline of the operation of this data communication device, the current position detecting device 2 in the mobile phone 3 receives the received waves from the satellites 6, 7 and 8 from the antenna 1,
The current position is estimated based on the received wave. The current position information is sent from the antenna 1 to the base station antenna 4 by the communication device, and the base station 5 receives it. Based on the current position information, the base station 5 performs various operations so that the mobile phone 3 can perform optimum reception. The base station 5 supplies the transmission data to the mobile phone 3, informs the demodulation method, and performs handoff or the like to the optimum base station, so that the reception performance of the mobile phone 3 can be improved.

FIG. 2 shows the mobile phone 3 and base station 5 of FIG.
3 is a block diagram showing the details of FIG. 2A is a receiving antenna for receiving radio waves from a plurality of satellites 6, 7, 8 and 1B is a transmitting antenna for performing data and voice communication to the base station 5.

First, 11 of the receiving system is a power measuring section for measuring the power of a received signal, 12, 13 and 14 are demodulating sections such as differential detection, synchronous detection and adaptive equalizer, and 16 is deinterleaved demodulated data. Deinterleave section, 17 is a codec section that restores compressed 1,0 data to the original, and 18 is decoded 1,0
A D / A converter for converting data into analog data, a speaker 19 for outputting voice, and a control unit 15 for selecting the demodulation units 12, 13, 14 from the control information received from the base station 5.

Further, in the transmission system, 20 is a microphone, 21 is an A / D converter for converting the voice collected from the microphone 20 into a digital signal, 22 is a codec section for coding 1,0 data, and 23 is 1,0 data. An interleaving section for interleaving, and 24 is a modulating section for modulating 1,0 data.

The current position detecting device 2 is connected to the receiving antenna 1A, and the output of the current position information is input to the codec unit 22 of the transmission system.

The base station 5 has an adaptive control section 25, and receives power information 26, position information 27 of the mobile phone 3 received from the receiving antenna 4A, and climate information 28 such as structures within the radio wave reachable range of the base station 5. The location information 29 is input, adaptive control is performed so that the mobile phone 3 can perform reception in an optimum state based on the information, and the location information 29 is output from the transmission antenna 4B.

The operation of FIG. 2 configured as above will be described.

When the mobile phone 3 receives the radio waves from the satellites 6, 7, and 8 with the receiving antenna 1A, the mobile phone 3 sends the power information 26 and the position information 27 from the current position detecting device 2 to the transmitting codec section 22, Interleave section 23, modulation section 24,
Receiving antenna 4A of base station 5 through transmitting antenna 1B
Send to.

In the base station 5, the receiving antenna 4 of the base station 5
Using the electric power information 26 and the position information 27 received from A, the climate information 28 and the location information 29 of the construction within the radio wave coverage of the base station 5, etc. The transmission power and the optimum demodulation units 12, 13 and 14 (that is, the demodulation method) are selected and adaptive control is performed so that optimum reception can be performed. The demodulation unit information selected by the adaptive control unit 25 is transmitted to the reception antenna 1A of the mobile phone 3 through the transmission antenna 4B.

As described above, according to the present embodiment, since the current position of the mobile phone 3 can be understood by the base station 5, the mobile phone 3 has an advantage that it can perform optimum reception even in a dead zone of radio waves. Further, according to the present embodiment, since the current position of the mobile phone 3 can be understood by the base station 5, the base station can control handoff with another base station.

[0022]

As described above, the data communication apparatus of the present invention knows the current position of the mobile phone with which the base station is currently communicating, thereby improving the reception performance of the mobile phone in the dead zone of radio waves. Can be improved.

[Brief description of drawings]

FIG. 1 is a system block diagram showing a basic configuration of a data communication device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing details of the mobile phone and base station of FIG.

FIG. 3 is a system block diagram showing a configuration of a conventional data communication device.

[Explanation of symbols]

1 ... Antenna, 2 ... Present position detection device, 3 ... Mobile phone, 4 ... Base station antenna, 5 ... Base station, 6 ... Satellite 1, 7 ... Satellite 2, 8 ... Satellite 3, 1A, 4A ... Receiving antenna, 1B , 4B ... Transmission antenna, 11 ... Power measuring section, 12 ... Demodulation section 1, 13 ... Demodulation section 2, 14 ... Demodulation section 3, 15 ... Control section, 16 ... Deinterleave section, 17,
22 ... Codec section, 18 ... D / A converter, 19 ... Speaker, 20 ... Microphone, 21 ... A / D converter, 23 ...
Interleave section, 24 ... Modulation section, 25 ... Adaptive control section, 26
… Power information, 27… Location information, 28… Climate information, 29…
Location information.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location H04Q 7/04 C

Claims (10)

[Claims] 1. A mobile phone means having a communication means for performing data and voice communication with a base station, and a current position detecting means for estimating a current position of the mobile phone means using radio waves from a plurality of satellites. A data communication device characterized by the above. 2. The data communication device according to claim 1, wherein the communication unit informs the base station of the current position of the mobile phone unit estimated by the current position detection unit. 3. The base station, which has been informed of the current position estimated by the current position detecting means of the mobile phone means by the communication means of the mobile phone means, transmits data that can be optimally received at the current position of the mobile phone means. Is supplied to the mobile phone means. 4. A demodulation system capable of optimal reception at the current position of the mobile phone means by the base station which has been notified of the current position estimated by the current position detection means of the mobile phone means by the communication means of the mobile phone means. To the mobile phone means. 5. The data communication, characterized in that the base station notified of the current position estimated by the current position detecting means of the mobile phone means by the communication means of the mobile phone means performs handoff to an optimum base station. apparatus. 6. The base station, which has been notified of the current position estimated by the current position detecting means of the mobile phone means by the communication means of the mobile phone means, transmits the transmission data capable of optimal reception at the current position of the mobile phone means. And a data communication device for notifying the optimum demodulation method. 7. The base station, which has been informed of the current position estimated by the current position detecting means of the mobile phone means by the communication means of the mobile phone means, transmits the transmission data capable of optimal reception at the current position of the mobile phone means. And a handoff to an optimum base station. 8. A demodulation system capable of optimal reception at the current position of the mobile phone means by the base station which has been informed of the current position estimated by the current position detection means of the mobile phone means by the communication means of the mobile phone means. And a handoff to an optimum base station. 9. The base station, which has been informed of the current position estimated by the current position detecting means of the mobile phone means by the communication means of the mobile phone means, transmits the transmission data capable of optimal reception at the current position of the mobile phone means. To inform the demodulation method,
A data communication device, characterized by performing handoff to an optimum base station. 10. A base station that performs data and voice communication with a mobile phone means obtains power information, position information, climate information, location information, etc., so that the mobile phone means can receive them in an optimum state. A data communication device, comprising: