JP2001102993A - Reception system using radio mobile station - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a radio mobile station small-sized, to eliminate the limitation of the kind of a device to be used, and to improve convenience by eliminating the need for the connector fitting space of a radio mobile station. SOLUTION: The disclosed reception system 1 which uses a radio mobile station comprises a radio mobile station 2 which sends and receives signals corresponding to the CDMA system to and from a base station and a terminal device 3 which is connected to the radio mobile station 2 by radio as shown in the figure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving system using a radio mobile station, and more particularly, to transmission and reception of a signal corresponding to a CDMA (Code Division Multiple Access) system with a base station. And a receiving system using a wireless mobile station that performs

[0002]

2. Description of the Related Art PDC (Personal Digital Cellular) which is known as a standard system for digital mobile phones in Japan.
Digital data such as still image data and video data using the digital data transmission function provided in the PHS (Personal Handyphone System) system, which is known as the standard system for mobile phones. It is possible to do.

For example, in the above-mentioned PDC system, the transmission rate of digital data is 9.6 KBPS (Bit Per Secon).
d), and since it is 32 KBPS in the PHS method, by using both methods, it is possible to use, for example, an MPEG (Moving Picture Exposure) which is a color moving image coding method.
erts Group) 1 standard.
However, moving picture transmission is impossible because it requires a transmission rate of 32 KBPS.

[0004] Also, the IMT, which is receiving attention as a global standard system for the next generation (third generation) digital mobile communication,
(International Mobile Telecommunication) -2000
In the W-CDMA (Wideband-CDMA; High Bandwidth CDMA) system, which is a promising candidate, digital data communication at a high transmission rate of 2.048 MBPS is possible. Therefore, by using the W-CDMA system, even in the above-described MPEG1 or the MPEG2 standard requiring a higher transmission rate of several MBPS, moving image transmission becomes possible. Can be made to correspond. Further, in the W-CDMA system, the inherent advantages of the CDMA system, such as maintaining confidentiality and avoiding interference with other systems, can be utilized as it is.

[0005] In the next generation PHS system, CDMA
It is planned that digital data communication at a high transmission rate of 25 to 30 MBPS can be performed by using this method.
Moving image transmission based on the EG1 and MPEG2 standards becomes possible.

As described above, according to the digital data transmission function using the CDMA system, digital data can be transmitted at a high transmission rate. It is expected that data transmission will be dealt with.

[0007] Here, in the case of transmitting digital data as described above, a still image or a moving image can be displayed based on the received data by receiving still image data or moving image data from a base station. Mobile stations are emerging. Further, by connecting a terminal device to the wireless mobile station, the display content can be confirmed by monitoring the terminal device without directly monitoring the wireless mobile station, and a receiving system using the wireless mobile station. Is considered.

FIG. 8 is a block diagram showing a conventional configuration of a receiving system using a radio mobile station as described above.
As shown in the drawing, a receiving system using the wireless mobile station includes a wireless mobile station 51 for transmitting and receiving a signal corresponding to the CDMA method to and from a base station (not shown). Terminal device 53 connected to connection line 52 via connection line 52
It is composed of The connection line 52 is connected to dedicated connectors 54A and 54B attached to the wireless mobile station 51 and the terminal device 53, respectively.

The radio mobile station 51 has a CD with the base station.
Antenna 56 for transmitting and receiving signals corresponding to the MA system
, An antenna resonator 57, a receiving section 58 for demodulating a received signal (modulated wave), and a transmitting section 59 for modulating transmission data
And a control unit 60 for performing overall control operation, a transmitter 61 for converting a voice into a voice signal and inputting it, a receiver 62 for converting a voice signal into voice and outputting the voice signal, and a speaker for audibly notifying an incoming call. 63. On the other hand, the terminal device 53 includes a data processing unit 64 that performs data processing of a signal transmitted from the wireless mobile station 51 via the connection line 52.

[0010]

However, in a receiving system using a conventional wireless mobile station, the following problem arises because the wireless mobile station and the terminal device are connected via a connection line. is there. The first problem is that it is necessary to attach a dedicated connector 54A for connecting the connection line 52 to the wireless mobile station 51, so that an installation space must be ensured. It is an obstacle.

The second problem is that the terminal device 53 cannot be connected to the wireless mobile station 51 of the model to which the connector 54A is not attached, so that the type of the mobile mobile station 51 to be used is limited. .

A third problem is that the usable distance range of the terminal device 53 is determined by the length of the connection line 52, but the length of the connection line 52 is limited, so that the convenience is applied. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and eliminates the need for a connector mounting space in a wireless mobile station, thereby reducing the size of the wireless mobile station, eliminating restrictions on the models used, and improving convenience. It is an object of the present invention to provide a receiving system using a radio mobile station that can be improved.

[0014]

According to a first aspect of the present invention, there is provided a radio mobile station for transmitting / receiving a signal corresponding to a CDMA system to / from a base station, and the radio mobile station. The present invention relates to a receiving system using a wireless mobile station, comprising a terminal device connected to the mobile terminal, wherein the wireless mobile station and the terminal device are wirelessly connected.

[0015] The invention according to claim 2 is characterized in that C
The present invention relates to a receiving system using a wireless mobile station, comprising a wireless mobile station that transmits and receives signals corresponding to the DMA system, and a terminal device wirelessly connected to the wireless mobile station. When a downlink signal including predetermined data is received from the base station, a control unit that extracts the predetermined data and inserts the extracted data into an uplink signal is provided.

According to a third aspect of the present invention, there is provided a receiving system using the wireless mobile station according to the second aspect, wherein the wireless mobile station further includes an antenna for transmitting the uplink signal to a base station and a terminal device; It is characterized by including a resonator, a receiving unit for demodulating a received signal, and a transmitting unit for modulating transmission data.

According to a fourth aspect of the present invention, there is provided a receiving system using the wireless mobile station according to the third aspect, wherein the terminal device comprises: a single finger for demodulating a received uplink signal; It is characterized by comprising a decoder for decoding and extracting the predetermined data, and a data processing unit for processing the decoded predetermined data.

According to a fifth aspect of the present invention, there is provided a receiving system using the radio mobile station according to the second, third or fourth aspect, wherein a terminal device I is added to the uplink signal in which the predetermined data is inserted.
D is added.

According to a sixth aspect of the present invention, there is provided a receiving system using the wireless mobile station according to the fifth aspect, wherein an error detection / correction parity is added to the uplink signal.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. The description will be specifically made using an embodiment. FIG. 1 is a block diagram showing a schematic configuration of a receiving system using a wireless mobile station according to an embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of a wireless mobile station constituting the receiving system. 3 is a block diagram showing a configuration of a terminal device constituting the reception system, FIG. 4 is a flowchart for explaining an operation of a control unit which is a main part of the radio mobile station, and FIG. 5 is a diagram showing data transmitted and received by the radio mobile station. FIG. 6 is a timing chart for explaining, FIG. 6 is a format diagram of data transmitted by the radio mobile station, and FIG. 7 is a block diagram showing a configuration of a format creation circuit added to the radio mobile station. Receiving system 1 using wireless mobile station of this example
Is transmitted to and from a base station (not shown), as shown in FIG.
Radio mobile station 2 for transmitting and receiving signals corresponding to the DMA system
And a terminal device 3 wirelessly connected to the wireless mobile station 2.
It is composed of

As shown in FIG. 2, the radio mobile station 2 receives the downlink signal corresponding to the CDMA system from the base station, and extracts the predetermined data when the downlink signal contains the predetermined data. An antenna 6 for transmitting the inserted and inserted uplink signal to the base station and the terminal device 2, an antenna resonator 7, a receiving unit 8 for demodulating a received signal (modulated wave), and a transmitting unit 9 for modulating transmission data; When the predetermined data is included in the downstream signal as described above, the control unit 10 extracts the predetermined data and inserts the predetermined data into the upstream signal, and performs a whole control operation, and a display unit that displays an image or the like. 11
And various switches 12 such as a power switch, an operation button 13 for receiving a user's input operation such as a keyboard,
A transmitter 14 that converts voice into a voice signal and inputs the same, a receiver 15 that converts voice signals into voice and outputs the same, and an LED (Li) that flashes and visually displays the operating state of the wireless mobile station 2
ght Emitting Device) 16 and a speaker 17 that audibly notifies an incoming call.

As shown in FIG. 3, the terminal device 3 includes an antenna 21 for receiving an uplink signal into which predetermined data transmitted from the antenna 6 of the wireless mobile station 2 is inserted, and a single finger (for demodulating the received signal). Demodulation means) 22, a decoder 23 for decoding the demodulated signal and extracting predetermined data, a data processing unit 24 for processing the extracted predetermined data and converting it to an image or the like, and a display 25 for displaying the processed data.
And

Next, referring to the flowchart of FIG.
An operation of the control unit 10 which is a main part of the wireless mobile station 2 will be described. First, when the power is turned on, a standby state is set until communication starts by calling or receiving (step S1).
01).

Next, when communication is started by calling or receiving a call, it is determined whether or not predetermined data is present in the downlink signal received from the base station (step S102). When there is the predetermined data, the process proceeds to step S103, and when there is no predetermined data, the process returns to step S102. Next, predetermined data is inserted into the uplink signal and transmitted to the terminal device 2 (step S104). If one unit of the transmission of the predetermined data is completed in step S104, the process proceeds to step S105, and it is determined whether or not the communication is terminated by disconnection of the communication partner or operation of the user.

If it is determined that the communication is to be ended, the process returns to step S102, and the above-described series of operations is repeated.
If not, the process returns to step S103. In step S106, processing other than the processing in step S104 is performed, and the flow advances to step S107 to determine whether to end communication. If you decide to end the communication,
Returning to step S102, the series of operations described above is repeated. If not, the process returns to step S103.

FIG. 5 is a timing chart for explaining data transmitted and received between the radio mobile station 2 and the base station. When receiving the received data as shown in FIG. 5A from the base station, the control unit 10 determines whether or not the received data includes predetermined data. When the predetermined data 18 is included together with other data 19 as in this example, the control unit 10 determines that there is the predetermined data, and only the predetermined data is transmitted at the timing shown in FIG. Pull out.
Then, the control unit 10 performs a control operation of inserting predetermined data into an uplink signal and transmitting the uplink signal from the antenna 6 to the base station and the terminal device 2.

FIG. 6 is a diagram showing a format of data transmitted by the radio mobile station. FIG. 3A shows that a received predetermined data stream 27 includes a synchronization signal 28 and a terminal device ID.
29 shows a format created by adding 29 and other information 30. The terminal device ID 29 is added to prevent transmission of predetermined data to a terminal device other than the terminal device corresponding to the specific ID, and to avoid processing the predetermined data by this terminal device.

FIG. 6B shows a format in which an error detection / error correction parity 31 is added to the format shown in FIG. By thus adding the parity 31 for error detection and error correction, it is possible to reduce the deterioration of communication quality due to transmission errors. FIG. 6C shows a format in which the received predetermined data stream 27 is used as it is. Thus, the predetermined data stream 2
Even with the format of 7 as it is, for example, by adding modulation by a specific M-sequence signal depending on the pair of each wireless mobile station 2 and the terminal device 3, it is possible to process predetermined data in another terminal device. Can be avoided.

FIG. 7 is a block diagram showing the configuration of a format creation circuit for creating the format shown in FIG. This format creation circuit 33 is a FIFO (First In First) added to the wireless mobile station 2 and used for time-compressing the received predetermined data stream 27.
Out) memory 34, synchronizing signal generating means 35, terminal device ID generating means 36, first and second buffers 37, 3
8, timing control means 39 and multiplexer 40
It is composed of This timing control means 39
Is the FIFO memory 34 and the first and second buffers 3
7 and 38 are used to control the output timing.

As described above, according to the configuration of this example,
The wireless connection between the wireless mobile station 2 and the terminal device 3 makes it unnecessary to attach a dedicated connector for connecting a connection line to the wireless mobile station 2, so that it is not necessary to secure an installation space, and Obstacles can be eliminated in downsizing the mobile station 2. In addition, since the terminal device 3 can be connected to a wireless mobile station of a model to which no connector is attached, the type of use of the wireless mobile station 2 is not limited. Further, with the elimination of the connection line, the usable distance range between the wireless mobile station 2 and the terminal device 3 is not restricted, so that the convenience can be improved.

Further, according to the configuration of this example, since the terminal device 3 wirelessly connected to the radio mobile station 2 can be a single finger as a receiver, it is not necessary to provide a RAKE receiver. While conforming to the method,
The cost of the receiver can be reduced.

Data transmitted from the radio mobile station 2 to the terminal device 3 is performed by, for example, a PSK (Phase Shift Keing) modulation method. Also, the carrier frequency at this time is
For example, FM (Frequency Modulation) band, VHF (Very H
igh Frequenxy) band and UHF (Ultra High Frequenxy) band. Therefore, in general, two transmitting units 9 (for the base station and the terminal device 3) of the wireless mobile station 2 are required. However, as in the configuration of this example, a transmission signal from the wireless mobile station 2 to the base station is required. By transmitting the (uplink signal) to the terminal device 2 at the same time, even if the number of the transmission units 9 is one, the communication between the wireless mobile station 2 and the base station is continued, and the predetermined It becomes possible to process information by data. In this case, the wireless mobile station 2 and the terminal device 3
Is performed at a shorter distance than the communication between the wireless mobile station 2 and the base station, so that the C / N (Carri
In this case, there is an advantage that the cost can be reduced because a component for improving the er to Noise ratio can be omitted.

As described above, according to this example, since the radio connection between the radio mobile station 2 and the terminal device 3 for transmitting / receiving a signal corresponding to the CDMA method to / from the base station is established, No connector is required. Further, according to this example, since the terminal device 3 can be a single finger as the receiver, the cost of the receiver can be reduced. Further, according to this example, the transmission signal from the radio mobile station 2 to the base station is also transmitted to the terminal device 3 at the same time. The information based on the predetermined data received by the terminal device 3 can be processed while the communication between the station 2 and the base station is continued. Therefore, it is possible to eliminate the need for a connector mounting space in the wireless mobile station, to reduce the size of the wireless mobile station, eliminate restrictions on the types of use, and improve convenience.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there may be changes in the design without departing from the gist of the present invention. Is also included in the present invention. For example, the number of terminal devices wirelessly connected to the wireless mobile station is not limited to one, and a plurality of terminal devices may be connected. In addition, the configuration of the wireless mobile station or the terminal device can be partially changed as necessary.

[0035]

As described above, according to the receiving system using the wireless mobile station of the present invention, the wireless mobile station, which transmits and receives signals corresponding to the CDMA system to and from the base station, and the terminal device. Since the connection is made wirelessly, a dedicated connector becomes unnecessary. Further, according to the receiving system using the wireless mobile station of the present invention, the terminal device can be a single finger as a receiver, so that the cost of the receiver can be reduced. According to the receiving system using the radio mobile station of the present invention, the transmission signal from the radio mobile station to the base station is also transmitted to the terminal device at the same time, so that one transmission unit of the radio mobile station is provided. Thus, the information based on the predetermined data received by the terminal device can be processed while the communication between the wireless mobile station and the base station is continued. Therefore, it is possible to eliminate the need for a connector mounting space in the wireless mobile station, to reduce the size of the wireless mobile station, eliminate restrictions on the types of use, and improve convenience.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a receiving system using a wireless mobile station according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a wireless mobile station constituting the receiving system.

FIG. 3 is a block diagram showing a configuration of a terminal device configuring the receiving system.

FIG. 4 is a flowchart illustrating an operation of a control unit that is a main part of the wireless mobile station.

FIG. 5 is a timing chart illustrating data transmitted and received by the wireless mobile station.

FIG. 6 is a diagram showing a format of data transmitted by the wireless mobile station.

FIG. 7 is a block diagram showing a configuration of a format creation circuit added to the wireless mobile station.

FIG. 8 is a block diagram showing a configuration of a receiving system using a conventional radio mobile station.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving system using radio | wireless mobile station 2 Radio | wireless mobile station 3 Terminal device 6, 21 Antenna 7 Antenna resonator 8 Receiving part 9 Transmitting part 10 Control part 11 Display 12 Various switches 13 Operation button 14 Transmitter 15 Receiver 16 LED Reference Signs List 17 speaker 18 predetermined data 19 other data 22 single finger 23 decoder 24 data processing unit 25 display 27 received predetermined data stream 28 synchronization signal 29 terminal device ID 30 other information 31 error detection / correction parity 33 format creation circuit 34 FIFO memory 35 Synchronization signal generation means 36 Terminal device ID generation means 37, 38 Buffer 39 Timing control means 39 40 Multiplexer 40

Claims (6)

[Claims] 1. A receiving system using a radio mobile station, comprising: a radio mobile station that transmits and receives a signal corresponding to the CDMA method to and from a base station, and a terminal device connected to the radio mobile station. A reception system using a wireless mobile station, wherein the wireless mobile station and the terminal device are wirelessly connected. 2. A reception using a radio mobile station, comprising a radio mobile station for transmitting and receiving a signal corresponding to the CDMA method to and from a base station, and a terminal device wirelessly connected to the radio mobile station. In the system, the radio mobile station, when receiving a downlink signal containing predetermined data from the base station, comprises a control unit that extracts the predetermined data and inserts it into the uplink signal System using wireless mobile stations. 3. The radio mobile station further includes an antenna for transmitting the uplink signal to a base station and a terminal device, an antenna resonator, a receiving unit for demodulating a received signal, and a transmitting unit for modulating transmission data. 3. A receiving system using a wireless mobile station according to claim 2, comprising: 4. The terminal device comprises: a single finger for demodulating a received uplink signal; a decoder for decoding the demodulated signal to extract the predetermined data; and a data for processing the decoded predetermined data. The receiving system according to claim 3, further comprising a processing unit. 5. The receiving system using a wireless mobile station according to claim 2, wherein a terminal device ID is added to the uplink signal into which the predetermined data has been inserted. 6. The radio mobile station according to claim 5, wherein an error detection / correction parity is added to the uplink signal.