JP2000209644A - Composite terminal for radio communication - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a terminal that can make communication with a plurality of radio communication networks to easily reserve a communication channel in the case of making a call. SOLUTION: At application of power to a portable telephone set, the portable telephone set registers its position to the radio communication networks of PHS and PDC (S1, S2). Then a PHS mode and a PDC mode are switched at a prescribed time interval in a communication standby state, and every time an SCCH is received, the traffic of the PHS(PHSTR) or the traffic of the PDC (PDCTR) is extracted from the SCCH and stored in a memory (S3-S8). When call transmission processing is started, the PHSTR and the PDCTR stored in the memory are read (S9, S10), either of the PHS and PDC communication methods whose traffic is smaller is selected (S11), a communication channel is set up (S12, S14) and communication is started (S13, S15).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission system and a reception system capable of communicating with a plurality of wireless communication networks having different communication systems by using the communication systems of the respective wireless communication networks. The present invention relates to a wireless communication multi-terminal device including a control unit that connects to a communication line of a wireless communication network selected from a network via a transmission unit and a reception unit.

[0002]

At present, as a radio communication system applied to mobile communication, there are a cellular radio system represented by a cellular phone system and a car phone system, and a second generation cordless telephone system. There is a simplified mobile phone system (PHS) that has been developed.

[0003] Among them, in a cellular radio communication system, the cell radius of a radio base station (BS) is 1.5 km to several k.
m, there is an advantage that the service area is wide and communication is possible even during high-speed movement. On the other hand, since the power consumption of a mobile phone device or a car phone device is large, charging and battery replacement must be frequently performed.

[0004] On the other hand, in the simple type portable telephone system, the cell radius of the radio base station (CS) is 100 m to several hundreds m, which is small compared to the cell radius in the cellular radio communication system. There is an advantage that power consumption is small in a portable telephone device. On the other hand, the simplified mobile phone system has a limitation that a service area is narrow and communication cannot be performed during high-speed movement.

[0005] Under these circumstances, in recent years, as a portable telephone device that can be used in both the cellular wireless communication system and the PHS wireless communication system, the communication function of the cellular portable telephone device has been described. A portable telephone device having both the communication function of the PHS type simplified portable telephone device and the communication function of the PHS type portable telephone device, that is, a composite terminal device for wireless communication has been considered.

[0006] In such a wireless communication complex terminal device, for example, a selection key for selecting one of a cellular system and a PHS system is provided, and a call can be transmitted in a system arbitrarily selected by a user. Some are configured as follows. According to this configuration, the user only needs to carry one terminal device, and for example, selects the PHS system that normally consumes a small amount of power and has a relatively low charge, and selects the cellular system while the user is traveling. There is an advantage that the user can select and use it, and the usability is improved.

However, even if the user selects a communication method and tries to make a call, connection cannot be established if there is no free communication line in the wireless communication network of the communication method. In such a case, it is necessary for the user to select the other communication method and perform the calling operation again, and it takes time to perform the operation. Such a situation where there is no vacancy in the communication line means that even when base stations are added along with the spread of mobile telephone devices, for example, people are particularly concentrated in areas such as stations and downtown areas. There is a situation that it is inevitable in the time zone.

In the case where a communication system having a large communication amount (traffic) in the area is selected, even if a communication line can be secured in a cell where a wireless communication multi-terminal device is currently located, a destination to which the mobile terminal moves afterwards. In such a cell, a situation in which the communication line is full and the call is disconnected easily occurs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wireless communication composite terminal device capable of communicating with a plurality of wireless communication networks and easily securing a communication line when making a call. Is to provide.

[0010]

To achieve the above object, the means described in claim 1 can be employed. According to this means, in an area where a plurality of different wireless communication networks exist, the receiving means receives traffic information on the plurality of wireless communication networks transmitted from the wireless communication network, and the traffic information recognizing means receives the received signal. , The traffic information of each wireless communication network can be recognized.

[0011] Based on the traffic information thus obtained, the control means selects a wireless communication network with a small usage rate of the communication line, that is, a wireless communication network with a small traffic, and connects the communication line. Therefore, for the user, since the selected wireless communication network is blocked as in the related art, there is no need to switch to another method again and perform the calling operation, and it is possible to communicate with the communication partner quickly and with high probability. it can.

[0012] Further, there is a correlation between the traffic of adjacent cells, and when a radio communication network with small traffic is selected, even if the cell moves from the currently existing cell to another cell, the other cell is not affected. The likelihood that all the lines are blocked in the cell is reduced. Therefore, disconnection of the line due to cell switching during movement is less likely to occur, and a more stable call can be made.

Further, in a use environment on the premise that such a wireless communication multi-terminal device is used, each radio communication multi-terminal device selects and transmits a radio communication network with a small traffic, thereby making each transmission possible. The traffic of the wireless communication network is easily equalized, and a communication line in each wireless communication network is apt to be vacant. As a result, even when there is an incoming call through each wireless communication network, it is easy to secure a communication line, and it can be expected that the whole wireless communication network can be effectively used.

According to the second aspect of the present invention, the control means selects a wireless communication network having the smallest usage rate of the communication line and performs outgoing transmission. It is possible to select a wireless communication network having a sufficient communication line, and to perform an operation with priority given to reliable connection.

According to the third aspect of the present invention, the control means selects a wireless communication network having a small usage rate of the communication line according to the priority given to the wireless communication network. Therefore,
In addition to the advantage that the user does not have to secure a communication line with low traffic, the user also has the advantage of being able to preferentially select, for example, a wireless communication system with a low communication fee or a wireless communication system that allows calls during high-speed movement. Can be.

According to the fourth aspect, traffic information is received in a predetermined order with respect to a plurality of wireless communication networks, so that traffic information transmitted from any of the wireless communication networks is received. be able to.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) Hereinafter, a PDC (Personal Digital)
Cellular) wireless communication system and PHS (Pers
onal Handyphone System) based on the first mobile phone device that can be used in a wireless communication system.
The embodiment will be described with reference to FIGS.

FIG. 4 is a functional block diagram showing an electric configuration of the portable telephone device, and FIG. 5 is an external view of the portable telephone device. In FIG. 4, the mobile phone device 1 includes a control unit 2 mainly composed of a microcomputer. The control unit 2 includes a nonvolatile memory for storing an execution program, a volatile memory for storing traffic information described later, and the like.
According to the execution program, processing described later is executed. Then, the control unit 2 includes a PDC radio unit 3, a PDC baseband processing unit 4, a PHS radio unit 5,
By transmitting and receiving control signals to and from the HS baseband processing unit 6, the PDC / PHS common voice processing unit 7, the key operation detecting unit 8, and the display control unit 9, these units are controlled.

The PDC / PHS antenna 10 has a housing 1a
(See FIG. 5) This is provided so as to protrude upward from the side. When a radio signal conforming to the PDC communication standard and the PHS communication standard is captured, the signal is input to the PDC / PHS duplexer 11. The PDC / PHS duplexer 11 is a PDC / PH
The radio signal captured by the S antenna 10 is input to either the PDC radio unit 3 or the PHS radio unit 5.

The PDC radio unit 3 includes a receiving circuit, a demodulation circuit, and the like as a receiving system. And PDC / P
The reception processing and demodulation processing are performed on the reception signal input from the HS duplexer 11, and the result is output to the PDC baseband processing unit 4.

The PDC radio section 3 includes a modulation circuit, a quadrature modulation circuit, a power amplification circuit, and the like as a transmission system. When a transmission signal is input from the PDC baseband processing unit 4, the input transmission signal is subjected to modulation processing, quadrature modulation processing, power amplification processing, and the like,
The transmission signal is output to the PDC / PHS duplexer 11.

The PDC baseband processing unit 4 is a
The PDC radio unit 3 is mainly composed of a control circuit.
When a received signal is input from the PDC / P, a TDMA process is performed on the input received signal to
The data is output to the HS common audio processing unit 7. Further, when a transmission signal is input from PDC / PHS common audio processing unit 7, PDC baseband processing unit 4 executes TDMA processing on the input transmission signal, and transmits the transmission signal to PDC radio unit 3. Output.

The PHS radio unit 5 basically has a function substantially equivalent to that of the PDC radio unit 3 described above. In this case, the PDC radio unit 3 processes the transmission signal and the reception signal in the 1.5 GHz band conforming to the PDC communication standard, whereas the PHS radio unit 5 transmits the transmission signal in the 1.9 GHz band conforming to the PHS communication standard. And a received signal. Note that the PHS baseband processing unit 6 also has basically the same function as the PDC baseband processing unit 4 described above.

The PDC / PHS common audio processing unit 7
A P (Digital Signal Processor), an audio interface circuit, and the like are provided, and when a reception signal is given from the PDC baseband processing unit 4 or the PHS baseband processing unit 6, the received reception signal is Then, a speech reception signal is generated by executing a voice decoding process and a D / A conversion process, and the received speech signal is output to the receiver 12 (see FIG. 5).

The PDC / PHS common voice processing unit 7
Receives a transmission signal from the microphone 13 (see FIG. 5), performs an A / D conversion process, a voice encoding process, and the like on the supplied transmission signal to generate a transmission signal,
Transmit the transmission signal to the PDC baseband processing unit 4 or PHS
The data is output to the baseband processing unit 6.

According to a control signal output from the control unit 2,
In a state where transmission and reception processing are controlled by the PDC radio unit 3 and the PDC baseband processing unit 4 (hereinafter, referred to as PDC mode), a 1.5 GHz band radio wave is captured by the PDC / PHS antenna 10. When,
When a reception signal corresponding to the radio wave is output from the receiver 12 and a transmission signal is given to the microphone 13, a 1.5 GHz band radio wave corresponding to the transmission signal is transmitted to the PDC / PDC.
It is radiated from the HS antenna 10, that is, it can communicate using a PDC wireless communication system.

On the other hand, in a state where the PHS radio unit 5 and the PHS baseband processing unit 6 control transmission / reception processing by a control signal output from the control unit 2 (hereinafter, referred to as PHS mode), When a radio wave in the 1.9 GHz band is captured by the PDC / PHS antenna 10, a reception signal corresponding to the radio wave is output from the receiver 12, and when a transmission signal is given to the microphone 13, the transmission signal is The corresponding 1.9GHz band radio wave is PDC /
It is radiated from the PHS antenna 10, that is, it can communicate using a PHS wireless communication system.

The key operation detecting section 8 includes a power key, a call start key, a call end key, numeric keys “0” to “9”, F
It is connected to a keypad 14 (see FIG. 5) on which various keys such as (function) keys are arranged. When a key operation signal corresponding to the key operation is given from the keypad 14, the key operation signal The corresponding control signal is sent to the control unit 2
Output.

The display controller 9 is connected to a display 15 having a liquid crystal display (see FIG. 5). When a control signal is supplied from the controller 2, the display controller 9 outputs a display command signal corresponding to the control signal. By outputting the display information to the display 15, display information corresponding to the display command signal is displayed on the display 15.
Is displayed.

In the above configuration, the transmitting means and the receiving means according to the present invention include a PDC radio section 3, a PDC baseband processing section 4, a PHS radio section 5, a PHS baseband processing section 6, a PDC / PHS antenna 10, And PD
The control unit and the traffic information recognizing unit are configured by the control unit 2.

FIG. 6 shows the portable telephone device 1 described above.
1 schematically shows a configuration of a wireless communication network which is an environment in which the wireless communication network is used. In FIG. 6, a wireless communication network 16 based on the PDC system includes wireless base stations (BS) 17a and 17b, a wireless line established between these wireless base stations 17a and 17b and the mobile phone 1, and a base station line 18a. Mobile communication control station (MCC) 19 for integrally controlling the radio base stations 17a and 17b via the communication base station 18b and a gateway relay system for interconnecting with a public network such as a digital communication network (ISDN: Integrated Services Digital Network) 20. A communication control station (MGS) 21, a common channel signaling network 22 interconnecting a plurality of subscriber mobile communication control stations 19, and a home location register 23 (hereinafter referred to as a database 23) connected to the common channel signaling network 22. ).

The radio base stations 17 a and 17 b divide a communication service area by the PDC system into macro cells having a radius of 1.5 km to several km and are installed for each of the macro cells. Assigning lines, etc. Also, the subscriber mobile communication control station 19
Performs control of call connection control for outgoing / incoming calls to and from the mobile phone device 1, line switching of handover, control of a wireless line spanning between wireless base stations, and collection and provision of traffic information described later. Gateway relay system mobile communication control station 21
Has a tracking connection function for incoming calls and a relay connection function.

The database 23 manages subscriber class information, location registration information, and the like in the wireless communication network 16. In practice, a plurality of subscriber-based mobile communication control stations 19 are connected to the common channel signaling network 22, and a plurality of radio base stations are not limited to the two. It is connected.

On the other hand, the wireless communication network 24 based on the PHS system
Is a wireless base station (CS) 25a, 25b, a wireless line established between the wireless base station 25a, 25b and the mobile phone 1, and these wireless base stations 25a, 25b are connected via subscriber lines 26a, 26b. Connecting device 27 as an access point to be connected by the PHS connecting device 27
Is connected to the common line signaling network 2 via the local exchange 28.
9, a PHS service control station 30 connected to the common channel signaling network 29, and the like.

The radio base stations 25 a and 25 b are provided for each microcell after dividing the communication service area by the PHS system into microcells having a radius of 100 m to several hundred m. Allocates radio lines. Also, the PHS service control station 30
Has a location registration information management function, a tracking connection function, a traffic information collection function and a provision function, which will be described later, and a database 3 for executing those functions.
1 is provided. Further, the local exchange 28 connected to the PHS connection device 27 is connected to a public network, for example, the digital communication network 20 via a toll switch 32. In practice, the number of wireless base stations connected to the PHS connection device 27 is not limited to two.

A general telephone device, for example, a home telephone device 33
Is connected to a local exchange 35 via a subscriber line 34,
Further, it is connected to a public network such as the digital communication network 20 via a toll switch 36. The local exchange 35 is also connected to the common channel signaling networks 22 and 29, and can inquire the databases 23 and 31 about location information on the mobile phone device 1. In FIG. 6, broken lines connecting between the MCC 19 and the common channel signaling network 22 and between the local exchanges 28 and 35 and the common channel signaling networks 22 and 29 indicate that the line is a control channel. Is shown.

Next, the operation of the present embodiment will be described with reference to FIGS. First, transmission of traffic information will be described in detail using the wireless communication network 24 according to the PHS method as an example. Here, the traffic means, for example, a local exchange 28, a line between the local exchange 28 and the PHS connection device 27, subscriber lines 26a and 26b, and wireless base stations 25a and 25b in the wireless communication network 24. The call loss rate due to blockage of a wireless line with the telephone device 1 is expressed as a percentage. However, the traffic information to be transmitted is not limited to this, and the toll switch 3
2, or the radio base station 25a,
The traffic may be traffic determined by each communication carrier independently or by mutual agreement, such as traffic on only the wireless line between the mobile phone 25b and the mobile phone device 1.

This traffic information is stored in P every predetermined time.
Collected by the HS service control station 30 and stored in the database 31 therein. The traffic information is used as broadcast information from the wireless communication network 24 as
After being stored in a dedicated cell channel (hereinafter referred to as SCCH) in a common control channel (CCCH) for transferring control information necessary for call connection and the like among the control channels (CCH), the radio base station 25a, 25b to the mobile phone device 1 in each cell. In the case of the PHS system, the transmission cycle is about 1.2 seconds.

FIG. 2 shows an SCCH message format. As can be seen from FIG.
The CH includes information composed of 5 octets (34 bits) in addition to the calling identification code and the destination identification code. Of these, the first to seventh bits of the first octet (8 bits) are the message identification, and, for example, when the seventh to first bits are “1000001” in order as the option information notification, the information is Indicates that this is traffic information.

FIG. 3 shows an example of this traffic information. Second octet of SCCH (8 bits)
Stores traffic encoded in 32 steps according to the traffic volume. The sixth to eighth bits of the second octet and the third to fifth octets are not used. In this case, when the eighth bit to the first bit of the second octet are “00011111” in sequence, the traffic is 100%, which indicates that the traffic is completely blocked. In addition, the coding of the traffic volume is not limited to the above-mentioned 32 steps, and can be determined by each communication carrier independently or by mutual agreement.

It should be noted that traffic information relating to the PDC wireless communication network 16 is transmitted in substantially the same manner.
In this case, the subscriber mobile communication control station 19 collects traffic information and stores the information in the database 23.

Now, in this way, the PDC system and PHS
Wireless communication network 1 to which traffic information of the system is transmitted
6 and 24 show the operation of the mobile phone device 1 in FIG.
A description will be given based on the flowcharts shown in FIGS.

First, in FIG. 1A, when the power of the portable telephone device 1 is turned on, the control unit 2 executes an initialization process (not shown). Thereafter, the control unit 2 sets the PHS mode and performs location registration with respect to the PHS wireless communication network 24 (step S1). In the link channel establishment phase that is performed first in the location registration control procedure, the SCCH is transmitted from the wireless base station (for example, the wireless base station 25b) of the cell where the mobile phone device 1 is located. The SCCH contains the traffic information described above, and the control unit 2 as the traffic information recognizing means extracts the traffic (PHSTR) related to the PHS wireless communication network 24 from the received SCCH and stores the traffic in the volatile memory. It is stored in a predetermined area. When storing the location registration data of the mobile phone device 1 in the database 31, the PHS service control station 30 also stores traffic information on the wireless communication network 24.

Subsequently, at step S2, the control unit 2
Sets the PDC mode and performs location registration with respect to the PDC wireless communication network 16. The mobile phone device 1 receives the SCCH including the traffic information from the wireless base station (for example, the wireless base station 17a) of the cell where the mobile phone device 1 is located, and the control unit 2 performs the traffic related to the PDC wireless communication network 16. (PDCTR) is extracted and stored in a predetermined area of the volatile memory. Even in this case, database 2
3 stores traffic information on the wireless communication network 16 together with the location registration data.

The mobile telephone device 1 is used for calling and SC transmitted from both wireless communication networks 24 and 16 of the PHS system and the PDC system.
In order to be able to receive area information such as CH,
During communication standby, the PHS mode and the PDC mode are switched at predetermined time intervals. In this case, when radio wave reception starts in any mode, the switching is interrupted and the mode is maintained. The control unit 2 performs step S
In step 3, it is checked whether an SCCH has been received in the PHS mode or the PDC mode, and the process waits in a loop until the SCCH is received. When the SCCH is received, it is determined in step S4 whether the SCCH is received in the PHS mode or the PDC mode. If the SCCH is received, the process proceeds to step S5.

In step S5, the control unit 2 as traffic information recognizing means
The traffic (PH) related to the HS type wireless communication network 24
STR) is extracted and stored in a predetermined area of the volatile memory in step S6. On the other hand, in PDC mode, S
If CCH is received, PD
Traffic (PDC) related to the C-type wireless communication network 16
TR) is extracted (step S7) and stored in a predetermined area of the volatile memory (step S8). After storing the traffic in the memory, the process returns to step S3 again,
The switching operation between the PHS mode and the PDC mode is restarted. By such processing, the mobile phone device 1
The latest traffic information can be always obtained for both the wireless communication networks 24 and 16 of the PDC scheme and the PDC scheme.

When the user starts a calling operation in the communication standby state, the portable telephone device 1 selects either the PHS mode or the PDC mode according to the flowchart shown in FIG. That is, the control unit 2 reads traffic (PHSTR) related to the PHS wireless communication network 24 from a predetermined area of the volatile memory (step S9), and further reads traffic (PDCTR) related to the PDC wireless communication network 16 (step S9). S10).

Subsequently, in step S11, the control unit 2 compares the traffic amount of both the PHS and the PDC. As a result, PHS traffic (PHST)
R) is smaller than the PDC traffic (PDCTR), the PHS mode is set, and the radio base station 25
b to establish a link channel and a service channel for performing communication by the PHS method (step S1).
2). After these channels are established and the communication line with the communication partner is established, a call is made with the partner (step S13).

On the other hand, PDC traffic (PDC
TR) is equal to or less than the PHS traffic (PHSTR), the PDC mode is set, and a link channel and a service channel for performing communication with the radio base station 17a by the PDC method are established (step S1).
4). After these channels are established and the communication line with the communication partner is established, a call is made with the partner (step S15).

As described above, in the present embodiment, the base stations of the respective wireless communication networks 16 and 24 are provided to the portable telephone device 1 configured to enable communication by both PDC and PHS. Based on the traffic information transmitted from the stations 17a and 17b and the stations 25a and 25b, a wireless communication network with low traffic is automatically selected and transmitted. This eliminates the need for the user to switch to another mode and perform the calling operation again because the line is not connected in the mode selected by himself / herself.

Since the traffic information is constantly updated in the portable telephone device 1, there is almost no delay in the information. Therefore, as long as the traffic of the PDC system and the PHS system stored in the predetermined area of the memory are not 100% at the time of the calling operation, the vacant wireless communication network is selected and the communication line is secured.

Further, the following advantages are expected by adopting the above configuration. Generally, there is a correlation between traffic of neighboring cells. The present mobile phone device 1
According to the above, the radio communication network with the smallest traffic is selected at the time of calling, so even if the cell moves from the current cell to another cell during a call, the line is completely blocked in the other cell. Is less likely to occur. Therefore,
Even when a cell is switched due to movement during a call, disconnection of a communication line due to blockage is less likely to occur, and a stable call is possible.

Further, since the portable telephone device 1 uses the wireless communication network with the smaller traffic when making outgoing calls, in a use environment where such a portable telephone device 1 is used, each wireless communication network 16 is used. , 24 are easily equalized, and a new effect of easily securing a communication line even when an incoming call is received is expected.

(Second Embodiment) Next, a description will be given of a second embodiment in which the transmission processing in the first embodiment is modified with reference to FIG. FIG. 7 shows a flowchart of the calling process of the mobile phone device 1. In FIG. 7, the control unit 2 reads out traffic (PHSTR) related to the PHS wireless communication network 24 from a predetermined area of the volatile memory (step S16).
Then, in step S17, the traffic (PHSTR) is compared with a preset reference value LMTTR. This reference value LMTTR is set in advance as an appropriate value that is equal to or less than 100 (%).

As a result of the comparison, the traffic (PHSTR)
Is smaller than the reference value LMTTR, the PHS mode is set regardless of the traffic of the PDC scheme, and the PHS mode is set.
After establishing a link channel and a service channel for the system, a call is made (steps S18 and S1).
9).

On the other hand, when the traffic (PHSTR) is equal to or higher than the reference value LMTTR, the PHS mode is not selected, and the traffic (PDCTR) relating to the PDC wireless communication network 16 is read from a predetermined area of the volatile memory (step S20). Then, in step S21, this traffic (PDCTR) is compared with the reference value LM.
Compare with TTR. In this case, a value different from the reference value LMTTR may be used as the reference value.

As a result of the comparison, the traffic (PDCTR)
Is smaller than the reference value LMTTR, the PDC mode is set, and after establishing a link channel and a service channel for the PDC scheme, a call is made (steps S22 and S23). In addition, traffic (PDCT
R) is greater than or equal to the reference value LMTTR, PHS, PDC
Neither mode is selected, and a message indicating, for example, “transmission is impossible due to line congestion” is displayed on the display 15 and the transmission processing is terminated.

The mobile telephone device 1 which performs such a calling process
According to the above, a wireless communication network whose traffic is smaller than a predetermined reference value LMTTR is selected, and a PHS system whose communication fee is generally low is preferentially selected over a PDC system whose communication fee is high. Therefore, in addition to the effects described in the first embodiment, low-cost communication becomes possible. In the case where the user desires the stability of the call for high-speed movement instead of the fee, the PDC system may be configured to have a higher priority than the PHS system, and further, it is desired to prioritize the key by using a key provided on the keypad 14 or the like. The method may be arbitrarily set.

(Other Embodiments) The present invention is not limited to each of the above embodiments, and the following modifications or extensions are possible. The plurality of communication systems are not limited to the PDC system and the PHS system described in the embodiment, but may be an analog cellular system. Further, the plurality of communication systems are not limited to the system employing the time division multiple access (TDMA). A system employing code division multiple access (CDMA) may be used. In addition, DECT (Digital European Cor
dless Telecommunication) and GSM (Global Sys
tem for Mobile Communication).

The PDC radio section and the PDC baseband processing section are not limited to the configuration corresponding to the 1.5 GHz band conforming to the PDC communication standard, but are configured to correspond to the 800 MHz band conforming to the PDC communication standard. You may. An antenna may be provided for each of the PDC system and the PHS system.
The function of the HS duplexer 11 may be provided separately for the PDC system and the PHS system.

The composite terminal device for wireless communication according to the present invention
A database 23 in the C-type wireless communication network 16;
Database 31 in PHS wireless communication network 24
The present invention can be similarly applied to a wireless communication network in which is integrated. In this case, the traffic information of the wireless communication networks 16 and 24 may be transmitted together from either the PDC wireless communication network 16 or the PHS wireless communication network 24.

As the traffic information, in addition to the traffic information on the cell in which the portable telephone device 1 exists, traffic information on a cell adjacent to the cell may be transmitted together. By using such traffic information, at the time of handover, it is possible to secure a communication line even in an adjacent cell, and a more stable call can be made.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a communication standby process (a) and a transmission process (b) in a first embodiment of the present invention.

FIG. 2 is a diagram showing a message format of SCCH.

FIG. 3 is a diagram showing an example of traffic information.

FIG. 4 is a functional block diagram showing an electrical configuration of the mobile phone device.

FIG. 5 is an external perspective view of a mobile phone device.

FIG. 6 is a diagram showing a PDC and PHS wireless communication network;

FIG. 7 is a flowchart showing transmission processing according to the second embodiment of the present invention;

[Explanation of symbols]

In the drawing, 1 is a mobile phone device (composite terminal device for wireless communication), 2 is a control unit (control unit, traffic information recognition unit), 3 is a PDC wireless unit (transmitting unit, receiving unit), 4 is PDC baseband processing Unit (transmission means, reception means), 5
Is a PHS radio unit (transmitting unit, receiving unit), 6 is a PHS baseband processing unit (transmitting unit, receiving unit), and 10 is PD
C / PHS antenna (transmitting means, receiving means), 11 is P
DC / PHS duplexer (transmission means, reception means).

Claims (5)

[Claims] 1. A transmitting means and a receiving means capable of communicating with a plurality of wireless communication networks having different communication systems using communication methods of the respective wireless communication networks, and a wireless communication network selected from the plurality of wireless communication networks. And a control means for connecting to the communication line via the transmitting means and the receiving means, wherein the traffic on the communication line of the wireless communication network is based on a reception signal received by the receiving means. Providing traffic information recognizing means for recognizing information, wherein the control means uses a communication line indicated by traffic information obtained by the traffic information recognizing means from the plurality of wireless communication networks when connecting the communication line. A composite terminal device for wireless communication, wherein a wireless communication network having a small ratio is selected. 2. The wireless communication composite terminal device according to claim 1, wherein said control means selects a wireless communication network having the smallest usage rate of said communication line when connecting said communication line. 3. The control means, when connecting the communication line, comprises:
2. The wireless communication composite terminal device according to claim 1, wherein a wireless communication network having a small usage rate of a communication line is selected. 4. The control unit according to claim 1, wherein the control unit controls the receiving unit so that the plurality of wireless communication networks receive the traffic information in a predetermined order. 5. The wireless communication composite terminal device according to item 1. 5. The wireless communication network according to claim 1, wherein the plurality of wireless communication networks are a wireless communication network in a cellular wireless communication system and a wireless communication network in a simplified portable telephone system. A composite terminal device for wireless communication.