JPH1155147A - Radio equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a radio equipment with superior carrying performance and which copes with plural communication systems by configuring module radio section and a signal processing section respectively as separate units, fixing the signal-processing section in a case of the radio equipment and allowing the module radio section to be removed from the signal-processing section. SOLUTION: This radio equipment is made up of a module radio section 43 and a radio equipment case 47 with a signal-processing section 45. The signal- processing section 45 is fixedly mounted in the radio equipment case 47. On the other hand, the module radio section 43 is detachable from the radio equipment case 47 via a module radio section insert section 49 provided to the radio equipment case 47 and the section 43 electrically connects to the signal processing section 45 and an antenna 51 via a connector 61 in the case of mount. Thus, the radio equipment copes with pluralities of communication systems by preparing several kinds of the module radio sections 43 of a small-size with superior portability and having only to replace them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio device for handling radio signals, and more particularly to a radio device capable of supporting various communication systems with a minimum system configuration.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional wireless device determines a microphone 1 for converting an audio signal into an electric signal, an audio codec 3 for converting an output thereof into a digital code, and an output of the microphone 1 by a communication system. Channel coder 5 for converting the output into a series of data, a waveform generating circuit 7 for converting the output to an I signal and a Q signal, a modulator 9 for modulating the output, and a converter for converting the modulated output to a specific frequency. A radio transmitting unit 13 that amplifies the signal received by the antenna 11 and outputs the signal, amplifies the signal received by the antenna 11, converts the signal to a specific frequency, and performs channel separation; A demodulator 17 for converting the signal into a Q signal, a waveform shaping circuit 19 for digitizing the demodulated output and converting it into a data sequence determined by the communication system, and converting the output to a digital audio signal And that the channel decoder 21, and a speaker 23 for converting the voice signal after the output is converted into an analog audio signal by the speech codec 3 in speech. The modulator 9 and the demodulator 17 generally perform signal processing in an analog manner.
Some digitally process signals using an SIC or an FPGA. The functions of the audio codec 3, the channel coder 5, the waveform generation circuit 7, the waveform shaping circuit 19, and the channel decoder 21 are realized by an ASIC, an FPGA, a DSP (Digital Signal Processor), or the like.

Further, the wireless device has a control unit 31 including a CPU 25, a timing control 27, a memory 29, and the like, and a display operation unit 33. The control unit 31 controls the wireless transmission unit 13, the wireless reception unit 15, the audio codec 3, the channel coder 5, the waveform generation circuit 7, the waveform shaping circuit 19, and the channel decoder 21 according to the protocol of the communication system. I have. Since such a conventional wireless device has a configuration in which a wireless transmission unit, a wireless reception unit, and a signal processing unit are provided corresponding to one communication system, for another different communication system, Due to differences in transmission / reception frequencies, differences in modulation / demodulation methods, differences in audio coding methods, differences in communication protocols, etc., they could not be used directly.

FIG. 6 shows an example of an operation mode of a conventional communication system. In the wireless communication system (A) 35, a portable terminal (a) 37 which is a dedicated portable wireless device is used, and in the wireless communication system (B) 39, a portable terminal (b) 41 which is a dedicated portable wireless device is used. . Wireless communication system (A) 3
Since the wireless communication system 5 and the wireless communication system (B) 39 are different systems, to use these two systems, a portable terminal (a) 37 and a mobile terminal (b) 41 corresponding to the respective communication systems must be carried. . For this reason, if both systems were to be used, both terminals had to be purchased, which was very disadvantageous in terms of price. In addition, the user of the portable wireless device must carry a portable wireless device usable in each communication system for each communication system to be used. For this reason, measures are being taken to increase the versatility of the terminal device such as the portable wireless device. For example, JP-A-4-43
In order to use a plurality of frequency bands with one terminal device, the technology described in Japanese Patent No. 724 discloses a common unit equipped with a control circuit common to each band, and a plurality of band units corresponding to each band. Is provided to constitute one communication device. Also, JP-A-8-1
The technology described in Japanese Patent No. 86516 discloses a modularized radio circuit including a memory storing software corresponding to each communication system and a modem so that one portable radio can support different communication systems. DSP
The module can be attached to and detached from the portable wireless device body including the baseband processing unit configured as described above to cope with differences in processing means and frequency bands.

[0005]

However, in Japanese Patent Application Laid-Open No. 4-43724, since a plurality of different band units are provided, it is inevitable that the entire terminal device becomes large, and the terminal device cannot be used as a fixed station. Can be put to practical use to some extent, but it has been difficult to apply it to portable radios. Japanese Patent Application Laid-Open No. HEI 8-186516 discloses a technique for increasing versatility by modularizing and exchanging a part of components constituting a portable wireless device. The radio unit, which transmits and receives signals with an I signal and a Q signal to and from the baseband processing unit, is equipped with a modulator and a demodulator. There is also a problem that the cost is increased because a large number of modular units having the above-mentioned modulator and demodulator must be prepared. The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a wireless device that is compatible with a plurality of communication systems without using a plurality of wireless devices and is excellent in portability. Aim.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a module radio unit for transmitting and receiving radio signals, and a signal processing for transmitting and receiving voice, data signals, and the like to and from the module radio unit. The signal processing unit is fixed in a case of a wireless device, and the module wireless unit is detachable from the signal processing unit. Another feature of the present invention is that the module radio section performs frequency conversion on the signal from the signal processing section, amplifies the signal, and then transmits the signal at a required frequency and power. A receiver that enables transmission of a signal to the signal processing unit after amplification, and a specific signal is transmitted by attaching the module radio unit to the signal processing unit, and the signal processing unit transmits the module radio unit. And a device that can be automatically identified. Another feature of the present invention is that, by possessing a plurality of frequency conversion units of the transmission unit and the reception unit, it is possible to flexibly cope with radio frequencies of different communication systems, It has a switch for freely switching the unit, and the switch is automatically switched by the module wireless unit itself or automatically by a control signal from the signal processing unit. Another feature of the present invention is that the signal processing unit performs a baseband process on a voice or data signal, modulates the signal, converts the signal into a radio signal, and sends the signal to a transmission unit of the module radio unit. The radio signal transmitted from the receiving unit is subjected to analog-to-digital conversion, band-limited, demodulated, and then converted to a voice or data signal. A memory that can download software corresponding to the module radio unit by a specific signal; and a control unit that controls the transmission system, the reception system, and the module radio unit. It is to be decorated.

Another feature of the present invention is that the signal processing unit includes:
A / D converter, D / A converter that can operate at high speed, and DSP (digital signal processor) for digitally and softwarely performing channel separation, modulation, and demodulation processing
Or one or more FPGAs or ASICs for performing a hard logic operation. Another feature of the present invention is that a plurality of frequency converters are owned, selected, and used, so that a single module radio unit capable of supporting a plurality of bands can be selected according to a communication system. A signal processing unit and an antenna are installed in a case of a wireless device, and the signal processing unit and the antenna are electrically and electromagnetically connected to each other by a connector, a transformer, or the like. The transmission / reception of the signal is performed by a radio signal which is not subjected to baseband signal processing such as an I signal and a Q signal, but is not subjected to band limitation such as channel separation of an RF band or an IF band in a modulated state, and has a narrow band. That is, a signal range, a wideband signal, or a plurality of signals are simultaneously transmitted and received.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on illustrated embodiments. FIG. 1 is a schematic configuration diagram showing an embodiment of a wireless device according to the present invention. As shown in FIG. 1, the wireless device includes a module wireless unit 43 and a signal processing unit 45.
The module radio section 43 is detachably mounted in the module radio section insertion section 49 of the radio case 47. An antenna 5 is provided in the wireless device case 47.
1, a microphone 53, a speaker 55, a display unit 57, and a key operation unit 59 are fixedly installed, and the signal processing unit 45 is fixedly installed in the wireless device case 1. On the other hand, the module radio section 43 is detachable from the radio case 47 through a module radio section insertion section 49 provided in the radio case 47 in this embodiment, and is connected to the signal processing section 45 and the antenna 51 at the time of mounting. On the other hand, they are electrically connected via a connector 61. In the present embodiment, the module wireless section 43 is formed in a small card type compliant with the PCMCIA standard in consideration of compatibility with information terminals and the like.

FIG. 2 is a block diagram showing the internal configuration of the module radio section 43 and the signal processing section 45. The signal processing unit 45 converts an audio signal into an electric signal by the microphone 53 and converts the output into a digital code, and a channel that converts the output into a data sequence determined by the communication system as a transmission system. Coder 65,
Waveform generation circuit 67 for converting the output into an I signal and a Q signal
And a modulator 69 for converting the output thereof, and a D / A converter 71 for converting the modulated digital signal into an analog signal. In addition, the signal processing unit 45 includes an RF band or an IF from the module radio unit 43 as a receiving system.
High-speed A that converts a wireless analog signal of a band into a digital signal
A / D converter 73, a channel separator 75 for converting the signal into a baseband signal and performing band limitation, a demodulator 77 for demodulating the band-limited signal into I and Q signals, and a demodulated output. And a channel decoder 81 for converting the output to a digital audio signal, and converting the output to an analog audio signal by the audio codec 63. After that, the sound signal is converted into sound by the speaker 55.

In this embodiment, the audio codec 63
And a transmission system channel coder 65, a waveform generation circuit 67, a modulator 69, a reception system channel separator 75, and a demodulator 7.
7. The waveform shaping circuit 79 and the channel decoder 81 are DS
The function is realized in P83. Here, the channel separator 75 of the receiving system can be realized by a specialized device having a thinning function such as a DDC (digital down converter). The signal processing unit 45 includes a CP
U85, timing control 87 and memory 89
The control unit 91 and the display operation unit 93 are provided, and the DSP 8 is downloaded by downloading external software or own software.
3, the module radio section 43, the D / A converter 71, and A
The operation of the / D converter 76 is controlled so as to match the communication system.

That is, the signal processing unit 45 performs a baseband process on a voice or data signal, modulates the signal, converts the signal into a radio signal, and sends the signal to a transmission unit of the module radio unit 43. A receiving system that performs analog-to-digital conversion on a wireless signal transmitted from the receiving unit, limits the band, converts the signal into a voice or data signal after demodulation processing, and attaches the module wireless unit 43 to the module wireless unit 43 A memory 8 capable of downloading software corresponding to the module wireless unit 43 by a specific signal transmitted.
9 and a control unit for controlling the transmission system, the reception system, and the module radio unit 43. The control unit is fixedly mounted in the case 47 of the radio device, and the signal processing is processed by software by the DSP. Therefore, it is possible to flexibly cope with a difference in a communication system.

The signal processing unit 45 includes an A / D converter, a D / A converter, and an FPGA or ASIC for performing channel separation, modulation, and demodulation processing in a hard logic manner. It is good also as composition which has two or more. On the other hand, the module wireless unit 43
A radio transmitting unit 95 that receives the analog-converted modulated wave signal from the signal processing unit 45, converts the modulated signal to a specific frequency, amplifies the power, and supplies the amplified signal to the antenna 51 for transmission; And a radio receiving unit 97 for amplifying the frequency and converting the frequency to a specific IF band frequency.
In this embodiment, a part of the connector 61 is short-circuited by electrically connecting the module wireless section 43 to the signal processing section 45 with the connector 61, whereby the signal processing section 45 automatically connects the module wireless section 43 to the signal processing section 45. , And the signal processing unit 45 loads software suitable for the communication system. FIG. 3 is a diagram showing a detailed internal configuration of the module radio unit 43. The wireless transmission unit 95 of the single module wireless unit 43 is provided with a first transmission circuit 99 for frequency-converting the analog-converted modulated wave signal from the signal processing unit 45 into a 280 MHz band.
A first switch 101 for switching the output of the first transmission circuit 99; a first amplifier circuit 103 for amplifying the 280 MHz band;
A second transmission circuit 105 for converting the frequency into a band,
Switch 1 for switching the output of the transmitting circuit 105
07 and a second amplifier circuit 10 for amplifying the 800 MHz band
9, a third transmission circuit 111 for converting the frequency of an 800 MHz band signal to a 2 GHz band and amplifying it, the first amplification circuit 103, the second amplification circuit 109, and the third transmission circuit 11
And a third switch 113 for switching the signal from the first signal. A transmission / reception duplexer 115 for separating the transmission signal and the reception signal is provided at the end of the third switch 113.

The radio receiving section 97 includes a fourth switch 11 for switching a signal from the transmission / reception duplexer 115.
7, the signal is amplified with low noise and the signal of 2 GHz band is 800
A first receiving circuit 119 for converting the frequency to the MHz band, a fifth switch 121 for switching the output of the first receiving circuit 119, and a fifth switch for amplifying the signal with low noise and converting the frequency of the 800 MHz band signal to 280 MHz. 2 receiving circuit 1
23, a sixth switch 125 for switching the output of the second receiving circuit 123, and a signal 280 for amplifying the signal with low noise.
A third receiving circuit 127 for converting the frequency of the signal in the MHz band to a specific frequency in the IF band.

The first switch 101, the second switch 107, the third switch 113, and the fourth switch 11
7, the fifth switch 121 and the sixth switch 125 are:
It is possible to switch manually with the selection switch 129 corresponding to the communication system, and it is also possible to switch automatically with a control signal from the signal processing unit 45.

That is, the module radio section 43 includes:
The transmission unit and the reception unit each have a plurality of frequency conversion units, and can be flexibly adapted to radio frequencies of different communication systems by dividing and configuring, and each of the plurality of frequency conversion units can be freely switched. It has a switch, and the switch can be automatically switched by the radio unit itself, or can be automatically switched by a control signal from the signal processing unit 45.

The module radio section 43 frequency-converts and amplifies the signal from the signal processing section 45, and then transmits the signal at a required frequency and power. A memory that stores software corresponding to a communication system to which the transmitting unit and the receiving unit are applied may be provided together with the receiving unit that can transmit a signal to the signal processing unit after the amplification. The transmitting section and the receiving section of the module radio section are divided and formed, and at least one of them is connected to the signal processing section 4.
5 may be detachable. Here, the transmission and reception of the signal between the module radio section 43 and the signal processing section 45 are not performed by baseband signal processing such as an I signal and a Q signal, but are performed in a modulated RF band or an IF band. The radio signal is not subjected to band limitation such as channel separation.

The module radio section 43 and the signal processing section 45 can simultaneously transmit and receive a narrow band signal, a wide band signal, or a plurality of signals. The module radio section 43 is electrically connected by a connector to the signal processing section 45 and the antenna 51 mounted in the case when the module radio section 43 is mounted in the case. Is also good. As described above, in this embodiment, several module radio units 43 each having a transmission / reception unit are prepared so as to be able to cope with a plurality of bands, and the module radio units 43 corresponding to the communication system to be used are wirelessly set. It is designed to be mounted in the machine case 47 for use. Also, by forming the module radio section 43 in a card type, as shown in FIG.
7, the module radio section 43 can be attached and detached with good operability through the module radio section insertion section 49.
To connect to the signal processing unit 45 and the antenna 51 to form a wireless device.

The control section 91 of the signal processing section 45 has the configuration shown in FIG.
As shown in (1), a part of the connector 61 is short-circuited by electrically connecting the module wireless section 43, whereby the signal processing section 45 automatically recognizes the module wireless section 43 and is loaded into the memory 89. An operation of loading software suitable for the communication system is performed. Thereafter, the DSP 83 and the D / A are connected based on the software.
Converter 71, A / D converter 73, module radio unit 43
Is controlled. This enables wireless communication in a communication system to which the module wireless unit 43 is applied. That is, since the DSP 83 is a programmable digital circuit, the software in the memory 89 may be provided so as to cover the difference in the modulation method and the difference in the signal frame format caused by the difference in the communication system. Further, the module radio unit 4
Reference numeral 3 has a plurality of frequency converters and can be selected and used under the control of the signal processing unit 45, and can perform operations such as simultaneous standby of a plurality of communication systems.
As described above, in the present embodiment, if several module wireless units are prepared for one wireless device, it can be applied to a plurality of communication systems. In particular, for portable radios, the card type compliant with the PCMCIA standard, which has excellent portability and possesses multiple frequency conversion units and can handle multiple bands, supports module communications without compromising portability. It is effective in terms of cost and utilization efficiency.

FIG. 4 shows an example of use of the above embodiment. FIG.
When the portable wireless device 203 is used in the wireless communication system (A) 201, the module wireless section (A) 204 is inserted into the portable wireless device 203 and used, and the portable wireless device B (B) 202 uses the portable wireless device 203. When the mobile device 203 is used, the wireless main unit (B) 205 is inserted into the mobile wireless device 203 and used, so that one terminal (the mobile wireless device 20) can be used.
3) can support a plurality of wireless communication systems. In the present embodiment, the module radio section is configured by a radio transmission section and a reception section. However, if the module radio section is configured to be a card type compliant with the PCMCIA standard by adding a modem function in response to the information age in the future, It can be used by attaching it to a mobile phone during a call, and it can be attached to an information terminal device as needed when sending and receiving data and the like.

[0020]

As described above, according to the present invention, the module radio section for transmitting and receiving by radio signals and the signal processing section for transmitting and receiving voice, data signals and the like to and from this module radio section are separate units. And the module radio unit is detachable from the signal processing unit, so that several radio units that can handle a plurality of bands are prepared for one radio. If one of these, which is applied to the communication system to be used, is selected and connected to the signal processing unit of the wireless device, a wireless device corresponding to the communication system is configured and communication can be performed. Therefore, it is possible to apply the present invention to a plurality of communication systems simply by preparing several small and highly portable module wireless units for one wireless device and exchanging them. In particular, in portable radios, PCMCIA
The use of a modular radio unit that has multiple frequency converters and is compatible with multiple bands with a card type that conforms to the standards and has excellent portability enables to support different communication systems without impairing portability. Since it is only necessary to purchase one mobile terminal body and a necessary module wireless unit, there are effects such as cost reduction and increased use efficiency.

The module radio section converts a signal from the signal processing section into a desired frequency after frequency conversion and amplification.
By attaching a transmitting unit that can transmit with power, a receiving unit that can transmit the signal to the signal processing unit after frequency conversion and amplification of the radio signal, and a module radio unit attached to the signal processing unit And a device that transmits a specific signal and enables the signal processing unit to automatically identify the module radio unit, so that the module radio unit corresponding to a different communication system is selected and If it is attached to a case, it can function as a wireless device.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a wireless device according to the present invention.

FIG. 2 is a block diagram illustrating an internal configuration of the wireless device illustrated in FIG. 1;

FIG. 3 is a block diagram illustrating a detailed internal configuration of a module radio unit illustrated in FIG. 2;

FIG. 4 is a diagram illustrating an example of use of a communication system according to the present invention.

FIG. 5 is a block diagram showing an internal configuration of a conventional wireless device.

FIG. 6 is a diagram illustrating a usage example of a conventional communication system.

[Explanation of symbols]

1, microphone, 3, 63 ...
Voice codec, 5, 65 ... channel coder,
7, 67: waveform generation circuit, 9, 69: modulator,
11, an antenna, 13, 95, a wireless transmitting unit, 15, 97, a wireless receiving unit,
17, 77: demodulator, 19, 79
... waveform shaping circuit, 21, 81 ... channel decoder,
23 ... speaker, 25, 85 ... CPU, 27, 8
7 ... Timing control, 29, 89 ... Memory,
31, 91 ... control unit, 33, 93 ...
Display operation unit 35 Wireless communication system A 37 Mobile terminal a 39
Wireless communication system B, 41 ... mobile terminal b,
43: module radio section, 45: signal processing section, 47: radio case, 49
... Module wireless section insertion section, 51 ... Antenna, 53 ... Microphone, 55 ...
Speaker, 57 ... display unit,
59: key operation unit, 61: connector,
71 ... D / A converter, 73 ... A / D converter,
75: channel separator, 83: DS
P, 99, 105 ... transmission circuit, 101, 107, 113, 117, 121, 12
5, 129: switch, 103, 109: amplifier circuit, 1
11 transmission circuit, 115 transmission / reception duplexer, 119, 123, 127 reception circuit, 201
... Wireless communication system, 202 ... Wireless communication system, 203 ... Portable wireless device,
204: wireless unit, 205: wireless main unit,

Claims (3)

[Claims] 1. A wireless device for exchanging information by using a wireless signal, comprising: a module wireless unit having a wireless signal transmitting / receiving function; Alternatively, it has a signal processing unit that exchanges data signals and the like, and the module radio unit and the signal processing unit are separate units that can be detachably attached to each other, and the module radio unit is compatible with different communication systems in different frequency bands. Wherein at least two or more modules are prepared, the module radio section is selected according to the different communication system, and the selected module radio section is mounted on the signal processing section. . 2. The module radio section converts a signal from the signal processing section into a frequency, amplifies the signal, and obtains a required frequency;
A transmission unit that enables transmission with power, a reception unit that enables transmission of a signal to the signal processing unit after frequency conversion and amplification of a radio signal, and mounting of the module radio unit to the signal processing unit The wireless device according to claim 1, further comprising: a device that transmits a specific signal so that the signal processing unit can automatically identify the module wireless unit. 3. A transmission system, wherein the signal processing unit performs baseband processing on a voice or data signal, modulates the signal, converts the signal into a radio signal, and transmits the radio signal to a transmission unit of the module radio unit.
A receiving system that converts a radio signal transmitted from a receiving unit of the module radio unit into an analog-to-digital converter, limits a band, demodulates the signal, and converts the signal into a voice or data signal, and attaches the module radio unit to the module radio unit. A memory capable of downloading software corresponding to the module radio unit by a specific signal transmitted from the control unit, and a control unit for controlling the transmission system, the reception system, and the module radio unit, The wireless device according to claim 1, wherein the wireless device is fixedly mounted in a case of the device.