JP2000134658A - Radio communication equipment, radio communication method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a suspend call from being disconnected even when a radio communication terminal activated in an in-radio base station suspension function moves to the outside of area. SOLUTION: In this radio communication equipment capable of utilizing the in-radio base station suspension function for suspending a call under communication in the state of keeping the connection of a radio communication line between the radio base station and the radio communication terminal and an in-radio base station system suspension function for disconnecting the radio communication line by suspending the call under communication on the side of the radio base station, the in-radio base station system suspension function is activated (S309, S310) when a receiving state is worse than a prescribed state (YES respectively at S303, S304) in the operating state of the in-radio base station suspension (S301, S302).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication apparatus, a radio communication method, and a storage medium. More specifically, the present invention relates to a radio communication line between a radio base station and a radio communication terminal. The present invention is applicable to a wireless communication device capable of using a wireless base station holding function for holding and a wireless base station system holding function for holding a call in communication at the wireless base station side and disconnecting the wireless communication line. The present invention relates to a wireless communication method, and a storage medium storing a program for executing the wireless communication method.

[0002]

2. Description of the Related Art Conventionally, in a wireless communication system including a wireless base station and a wireless communication terminal, a wireless communication line between the wireless base station and the wireless communication terminal is connected as a function of holding a call during communication. There is a function in the wireless base station for holding the call in communication as it is (so-called self-holding function), and a function in the wireless base station for holding the call in communication on the wireless base station side and disconnecting the wireless communication line. . In the hold in the wireless base station, when the hold is released, the call can be resumed immediately, but the wireless communication line remains occupied during the hold period, and the high-frequency circuit of the wireless communication terminal is in the operating state. There is wasteful power consumption of the battery. The system hold in the wireless base station does not have the drawback of the hold in the wireless base station, but even if the hold is released, the call cannot be resumed unless the wireless line is allocated or the connection process is executed.

[0003]

By the way, in the above-mentioned conventional system, while the operator activates the wireless base station holding function in the wireless communication terminal, the operator carries the wireless communication terminal and holds the call. If the user leaves the base station service area and moves to a place where radio waves do not reach (out of service area), the held call is disconnected.

[0004] The present invention has been made in view of such a problem, and is intended to prevent a held call from being disconnected even when a wireless communication terminal in which a wireless base station holding function is activated moves out of the service area. It is an object to provide a wireless communication device, a wireless communication method, and a storage medium.

[0005]

To achieve the above object, according to the first aspect of the present invention, a call during communication is established while a wireless communication line between a wireless base station and a wireless communication terminal is connected. A wireless communication device that can use a wireless base station hold function to hold a call and a wireless communication line to disconnect a wireless communication line by holding a call during communication at the wireless base station side. Detecting means for detecting the reception state in the wireless communication line, and activating the system reservation function in the radio base station when the reception state detected by the detection means is worse than a predetermined state in the operation state of the reservation function in the radio base station. And control means for causing

[0007] According to the invention of claim 7, a holding function in a wireless base station for holding a call in communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected;
Receiving means for receiving a wireless communication channel switching instruction sent from a wireless base station in a wireless communication device capable of utilizing a system holding function in a wireless base station for holding a call during communication at a wireless base station side and disconnecting a wireless communication line. And control means for activating the system holding function in the wireless base station when the receiving means receives a wireless communication channel switching instruction in the operation state of the holding function in the wireless base station.

According to the eleventh aspect of the present invention, there is provided a wireless base station holding function for holding a call during communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected, A wireless communication method applied to a wireless communication device capable of utilizing a system holding function in a wireless base station that holds a call on the wireless base station side and disconnects the wireless communication line.
A detection step of detecting a reception state in a radio communication line with the radio base station; and, in an operation state of the holding function in the radio base station, when the reception state detected in the detection step is worse than a predetermined state, And a control step of activating the intra-office system hold function.

[0008] According to the invention of claim 17, a holding function in the wireless base station for holding a call in communication while the wireless communication line between the wireless base station and the wireless communication terminal is connected, A wireless communication method applied to a wireless communication device capable of utilizing a system holding function in a wireless base station that holds a call on the wireless base station side and disconnects the wireless communication line.
A receiving step of receiving a wireless communication channel switching instruction sent from the wireless base station; and, in an operation state of the wireless base station holding function, when the wireless communication channel switching instruction is received in the receiving step, the system holding function in the wireless base station. And a control step of starting.

According to the invention of claim 21, a wireless base station holding function for holding a call in communication while the wireless communication line between the wireless base station and the wireless communication terminal is connected, Computer-readable storage medium storing, as a program, a wireless communication method applied to a wireless communication apparatus that can use a system holding function in a wireless base station that holds a call at a wireless base station side and disconnects a wireless communication line In the wireless communication method, the detecting step of detecting the receiving state in the wireless communication line between the wireless base station, and in the operating state of the wireless base station in the holding function,
A control step of activating a system holding function in the radio base station when the reception state detected in the detection step is worse than a predetermined state.

Further, according to the invention of claim 24,
A wireless base station hold function for holding a call during communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected, and a wireless communication line for holding a call during communication on the wireless base station side. A computer-readable storage medium storing a wireless communication method applied to a wireless communication apparatus capable of utilizing a system holding function in a wireless base station to be disconnected, wherein the wireless communication method includes: A receiving step of receiving a communication channel switching instruction; and a control step of activating a system holding function in the wireless base station when the wireless communication channel switching instruction is received in the receiving step in the operation state of the wireless base station holding function. It is characterized by the following.

[0011]

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

(First Embodiment) FIG. 1 is a block diagram showing a configuration of a wireless communication terminal according to a first embodiment of the present invention. This wireless communication terminal is a wireless communication terminal in a digital cordless telephone system conforming to a self-operating mode indicated in the standard RCR-STD28 of a personal handy phone system (hereinafter, referred to as “PHS”).

In FIG. 1, 1 is an antenna for transmitting and receiving radio waves, 2 is an RF section for transmitting and receiving, 3 is a modem for modulating transmission data and demodulating received data, and 4 is TDMA processing such as frame disassembly / assembly. COD that performs error detection processing, scramble processing, and data privacy processing
EC section. Note that the channel CODEC unit 4
An A / D converter 4a for obtaining a digital received electric field strength based on an analog signal indicating the received electric field strength sent from the section 2 is included. The A / D conversion unit 4a sends the received electric field strength of the digital value to the control unit 13. The channel CODEC unit 4 detects whether or not the received data has an error by an error detection process, and sends the error rate of the received data to the control unit 13.

Reference numeral 5 denotes a channel CODEC which encodes an analog audio signal from the microphone 6 into an ADPCM signal.
The audio processing unit 8 outputs to the receiver 4 or performs decoding in the reverse direction and outputs to the receiver 7.
A communication control processing unit 9 for performing communication protocol processing up to layer 3; a key operation unit 9 for controlling various key inputs;
Reference numeral 0 denotes an information processing unit that performs various types of information processing based on an input signal from the key operation unit 9 and data received from a wireless line, 11 denotes a display unit that displays various types of information, and 12 denotes data from the information processing unit 10. A display controller 13 controls the display of the display unit 11, and a controller 13 controls each unit of the wireless communication terminal.

FIG. 2 is a configuration diagram of a digital cordless telephone system including such a wireless communication terminal.

In FIG. 2, reference numeral 101 denotes a communication line;
Are wireless base stations connected to the communication line 101, 103-1
Reference numeral 06 denotes wireless communication terminals A to D connected to the wireless base station 102 via a wireless line and performing communication. Wireless communication terminal 10
Each of 3 to 106 has the configuration shown in FIG.

FIG. 3 and FIG. 4 show digital cordless
4 is a flowchart illustrating an operation of the telephone system. FIG.
FIG. 6 is a sequence diagram of a wireless protocol in the digital cordless telephone system. FIG. 5 is a sequence diagram of a wireless protocol related to holding in a wireless base station, and FIG. 6 is a sequence diagram of a wireless protocol related to holding of a system in a wireless base station.

Hereinafter, referring to FIGS. 5 and 6 as appropriate,
The operation of the digital cordless telephone system will be described with reference to FIGS.

First, it is assumed that the wireless communication terminal (A) 103 is communicating and the wireless communication terminal (B) 104, the wireless communication terminal (C) 105, and the wireless communication terminal (D) 106 are in a standby state.

The operator of the wireless communication terminal (A) 103 performs a holding operation in the wireless base station by using the key operation unit 9 (S30).
1). The information processing unit 10 analyzes the content of the key operation and notifies the communication control processing unit 8 to start holding in the wireless base station. When receiving this notification, the communication control processing unit 8 instructs the wireless base station 102 to start holding in the wireless base station. FIG. 5 shows a sequence of a wireless protocol for starting the hold in the wireless base station. In FIG. 5, a wireless communication terminal (A) 103
Is instructed to start holding in the wireless base station (Q
2) The communication is held in the wireless base station (in-communication holding state) (Q4), and the call being communicated in the wireless base station 102 is held in the wireless line connected state (S302). ).

At the same time, the communication control processing unit 8 notifies the control unit 13 that the holding in the radio base station has started. Upon receiving this notification, the control unit 13 determines whether the intensity of the received radio wave (reception electric field intensity) transmitted from the A / D conversion unit 4a in the channel CODEC unit 4 is equal to or less than a predetermined value, and determines the error rate of the reception data. Is greater than or equal to a predetermined value (S303, S30
4).

If the hold operation is performed by the key operation unit 9 while the strength of the received radio wave is larger than the predetermined value or the state where the error rate of the received data is smaller than the predetermined value continues ( (S305), the hold in the wireless base station is released (S306), and the state returns to the communicating state (S307).

When the intensity of the received radio wave falls below a predetermined value and the error rate of the received data exceeds a predetermined value, the control unit 13
Instructs the communication control processing unit 8 to end the holding in the wireless base station.

Upon receiving this notification, the communication control processing unit 8
An instruction is issued to the wireless base station 102 to end the holding in the wireless base station. FIG. 5 shows a sequence of a wireless protocol for ending the hold in the wireless base station. That is, in the state (Q4) of the communication being held in the CS, if a decrease in the received signal strength or an increase in the received data error rate is detected, the wireless communication terminal (A) 103 sends the signal to the wireless base station 102.
Is instructed to end the hold in the wireless base station (Q
5) As a result, when the communication is in progress (empty) (Q
7), holding in the wireless base station ends (S308).

When the hold in the radio base station is completed, the communication control processing unit 8 notifies the control unit 13 of the end. Control unit 13
, Upon receiving this notification, notifies the communication control processing unit 8 to start holding the system in the wireless base station. Upon receiving this notification, the communication control processing unit 8 instructs the wireless base station 102 to start holding the system in the wireless base station (S
309).

An instruction is sent from wireless communication terminal (A) 103 to wireless base station 102 to start holding the system in the wireless base station (Q12), and a communication between wireless communication terminal (A) 103 and wireless base station 102 is made. A series of processing for disconnecting the wireless channel is performed. Then, the wireless communication terminal (A) 1
03 "radio channel disconnection completed" to the radio base station 102
Is transmitted (Q20), the wireless line between the wireless communication terminal (A) 103 and the wireless base station 102 is disconnected, and the call being communicated with the wireless base station 102 is put on hold (S309, S310).

The sequences Q21 and Q22 in FIG.
In the wireless base station 102, the wireless communication terminal (A) 103, the other wireless communication terminal (B) 104, and the wireless communication terminal (C) 105,
The wireless communication terminal (D) 106 is notified. Upon receiving this notification, each wireless communication terminal displays on the display unit 11 that the system in the wireless base station is on hold (S311).

As described above, the holding in the wireless base station of the wireless communication terminal (A) 103 whose received radio field intensity has become weak is shifted to the system holding in the wireless base station, and the holding state is maintained. Therefore, even if the wireless communication terminal in which the wireless base station holding function is activated moves out of the service area, the held call is not disconnected.

Next, when the radio communication terminal (A) 103, which has been shifted to the system hold state in the wireless base station, has improved the radio wave reception state, the system hold in the wireless base station is released and the wireless line is reconnected. The process will be described.

FIG. 7 is a flow chart showing the procedure for releasing and reconnecting the system hold in the radio base station. FIG. 8 and FIG. 9 are diagrams showing the sequence of the wireless protocol related to the release of the system hold in the wireless base station and the reconnection.

Hereinafter, referring to FIGS. 8 and 9 as needed,
With reference to FIG. 7, cancellation of the system hold in the wireless base station and reconnection will be described.

It is assumed that the radio communication terminal (A) 103 is the radio communication terminal that has activated the system reservation in the radio base station after executing the reservation in the radio base station, and the radio communication terminal (A) 1
03, including the wireless communication terminal (B) 104, the wireless communication terminal (C) 105, and the wireless communication terminal (D) 106, are informed that the system in the wireless base station is on hold by the PCH signal (Q21). , Q22).

The radio communication terminal (A) 103 determines whether the strength of the received radio wave of the PCH signal received even in the waiting state is equal to or higher than a predetermined value and whether the error rate of the received data is equal to or lower than a predetermined value. Is determined (S701, S702).

Whether the intensity of the received radio wave is smaller than a predetermined value,
Or, when the error rate of the received data is larger than a predetermined value,
When any one of the wireless communication terminals (A to D) 103 to 106 performs the system hold reconnection operation in the wireless base station (S
703), the system hold in the wireless base station is released, reconnection is performed (S704), and the state returns to the communicating state (S70).
5).

If the intensity of the received radio wave is equal to or higher than a predetermined value and the error rate of the received data is equal to or lower than a predetermined value, the control unit 13 of the wireless communication terminal (A) 103 sends the communication control processing unit 8 Release the intra-office system hold and instruct to reconnect.

Upon receiving this notification, the communication control processing unit 8
The wireless base station 102 is instructed to release the system reservation in the wireless base station and to reconnect (S706). FIGS. 8 and 9 show the sequence of the wireless protocol for releasing and reconnecting the system hold in the wireless base station. That is, when a request to establish a link channel is sent from the wireless communication terminal (A) 103 to the wireless base station 102 (Q23), a series of processing is performed (Q24 to Q3).
9) Finally, when the communication state is established (Q40), the suspension of the system in the wireless base station ends (S707).

When the suspension of the system in the radio base station is completed, the communication control processing section 8 notifies the control section 13 to that effect. Upon receiving this notification, the control unit 13 notifies the communication control processing unit 8 to start holding in the wireless base station. Upon receiving this notification, the communication control processing unit 8 instructs the wireless base station 102 to start holding in the wireless base station (S70).
8). The sequence of the radio protocol for starting the hold in the radio base station is the sequence Q shown in FIG.
This is the same as 2 to sequence Q4. The processing is performed according to this sequence, and the state is set to the holding state in the base station (S7
09).

Here, the description has been made on the assumption that the radio communication terminal (A) 103 is continuously in a service area where the PCH signal can be captured. ) Even if the received radio wave of 103 becomes weaker and goes out of the service area once, if the wireless communication terminal (A) 103 enters the service area again and catches the PCH signal, the call in the system hold state in the wireless base station is returned. Since the fact can be known from the PCH signal, the same operation can be performed.

In the first embodiment, the condition for terminating the hold in the radio base station or the condition for terminating the system hold in the radio base station includes the condition of the strength of the received radio wave and the error rate of the received data. Both are listed, but only one may be used.

(Second Embodiment) The configuration of the second embodiment is basically the same as the configuration of the first embodiment. Therefore, in the description of the second embodiment, the configuration of the first embodiment is used.

FIGS. 10 and 11 are flowcharts showing the operation of the digital cordless telephone system according to the second embodiment.

First, it is assumed that the wireless communication terminal (A) 103 is communicating and the wireless communication terminal (B) 104, the wireless communication terminal (C) 105, and the wireless communication terminal (D) 106 are in a standby state.

The operator of the wireless communication terminal (A) 103 performs a holding operation in the wireless base station by using the key operation unit 9 (S30).
1). The information processing unit 10 analyzes the content of the key operation and notifies the communication control processing unit 8 to start holding in the wireless base station. When receiving this notification, the communication control processing unit 8 instructs the wireless base station 102 to start holding in the wireless base station. The sequence of the wireless protocol for starting the hold in the wireless base station is the same as that of the first embodiment shown in FIG. 5, and in FIG. 5, the wireless communication terminal (A) 1
From 03, an instruction is sent to the wireless base station 102 to start holding in the wireless base station (Q2), the state of communication is held in the wireless base station (holding in CS) (Q4), and the wireless line is connected. The call being communicated by the wireless base station 102 is put on hold in the state (S302).

At the same time, the communication control processing unit 8 notifies the control unit 13 that the hold in the radio base station has started. Upon receiving this notification, the control unit 13 recognizes that it is on hold in the wireless base station, and determines whether a wireless communication channel switching instruction has been sent from the wireless base station 102 (S603). .

When the hold operation is performed by the key operation unit 9 in a state where the wireless communication channel switching instruction is not sent from the wireless base station 102 (S604), the hold in the wireless base station is released (S605), and the communication is performed. Return to the middle state (S
606).

If the strength of the received radio wave falls below a predetermined value or the error rate of the received data exceeds a predetermined value due to the radio communication terminal (A) 103 moving away from the radio base station 102 while the radio base station is on hold, for example. The wireless base station 102 issues a wireless communication channel switching instruction to the wireless communication terminal (A) 103 in order to ensure communication quality. During a normal call, the wireless communication channel is switched in accordance with this instruction. However, since the wireless communication channel is on hold, the control unit 13 of the wireless communication terminal (A) 103 transmits the wireless base station to the communication control processing unit 8. An instruction is given to end the intra-office hold. Upon receiving this notification, the communication control processing unit 8 instructs the wireless base station 102 to end the holding in the wireless base station (S60).
7).

The sequence of the radio protocol for terminating the reservation in the radio base station is the same as that in the first embodiment shown in FIG. 5, and the suspension in the radio base station is terminated when the communication is performed (empty). (S608).

When the hold in the wireless base station is completed, the communication control processing unit 8 notifies the control unit 13 of the end. Control unit 13
, Upon receiving this notification, notifies the communication control processing unit 8 to start holding the system in the wireless base station. Upon receiving this notification, the communication control processing unit 8 instructs the wireless base station 102 to start holding the system in the wireless base station (S
609).

The sequence of the radio protocol for starting the on-hold system in the radio base station is the same as that of the first embodiment shown in FIG. Is put on hold (S61)
0).

Then, the sequences Q21 and Q22 in FIG.
In the wireless base station 102, the wireless communication terminal (A) 103 and the other wireless communication terminals (B) 10
4. Wireless communication terminal (C) 105, wireless communication terminal (D) 1
06 is notified. Upon receiving this notification, each wireless communication terminal displays on the display unit 11 that the system in the wireless base station is on hold (S611).

As described above, in the second embodiment, the radio communication channel switching instruction output from the radio base station 102 is used in accordance with the deterioration of the reception state. From the system to the system in the wireless base station. Thus, even if the wireless communication terminal on which the wireless base station holding function is activated moves out of the service area, the held call is not disconnected.

Further, each wireless communication terminal is notified that the system in the wireless base station is on hold using the PCH signal. Therefore, even if the radio communication terminal (A) 103 whose received radio wave intensity has become weaker and the received radio wave further weakens and goes out of the service area, the radio communication terminal (A) 103 again catches the PCH signal when it enters the service area and enters the system hold state in the radio base station. Since it is possible to know that there is a call that is being held, it is possible to talk again with the call that the user has held.

In the first and second embodiments, the PHS is shown as an example of the wireless medium, but the present invention may be applied to other wireless medium systems.

The present invention may be applied to a system constituted by a plurality of devices, or to an apparatus constituted by a single device.

Further, a storage medium storing program codes of software for realizing the functions of the above-described embodiments is supplied to a system or an apparatus, and a computer (or CPU or MPU) of the system or apparatus stores the storage medium in the storage medium. It goes without saying that the present invention is also achieved by reading and executing the program code thus set.

In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the readout program code, not only the functions of each of the above-described embodiments are realized, but also the OS running on the computer based on the instructions of the program code. It is needless to say that the present invention includes a case where a part or all of the actual processing is performed and the function of each embodiment described above is realized by the processing.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instruction of the program code, It is needless to say that the present invention includes a case where the CPU or the like provided in the function expansion board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments. .

[0060]

As described in detail above, claims 1 and 7 have been described.
According to the thirteenth aspect of the present invention, when the wireless communication terminal moves to an area having a poor reception state while the holding function in the wireless base station is operating, the system holding function in the wireless base station is automatically activated. I do. This makes it possible to prevent the held call from being disconnected while the operator of the wireless communication terminal does not notice.

Further, claim 5, claim 10, and claim 1
According to the invention as set forth in claim 20, claim 22, or claim 25, the radio base station uses the paging channel (PCH) signal to activate the radio base station after the activation of the system reservation function in the radio base station. A display signal indicating that the system in the wireless base station is on hold is sent to each wireless communication terminal registered in the station, and each wireless communication terminal displays that fact. As a result, the operator of the wireless communication terminal can be informed that there is a call in the system hold state in the wireless base station.

Furthermore, according to the invention described in claim 6, claim 16, or claim 23, after the system in the wireless base station is put on hold, the wireless communication terminal that has activated the hold in the base station first becomes the receiving state. When returning to a good area, the system in the wireless base station is released from the hold, the connection is re-established, and the hold function in the wireless base station is activated. Thereby, convenience is improved.

According to the invention described in claim 7, claim 17, or claim 24, when the wireless communication terminal receives the wireless communication channel switching instruction while the hold function in the wireless base station is operating, The system hold function in the wireless base station is activated. As a result, even if the reception on the wireless base station side deteriorates, it is possible to automatically set the held call to the system hold in the wireless base station and prevent the held call from being cut off without the operator of the wireless communication terminal noticing.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a wireless communication terminal according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a digital cordless telephone system including a wireless communication terminal.

FIG. 3 is a flowchart showing the operation of the digital cordless telephone system.

FIG. 4 is a continuation of the flowchart of FIG. 3 showing the operation of the digital cordless telephone system.

FIG. 5 is a sequence diagram of a wireless protocol related to holding in a wireless base station.

FIG. 6 is a sequence diagram of a wireless protocol related to system reservation in a wireless base station.

FIG. 7 is a flowchart showing a procedure for releasing a system hold in a wireless base station and reconnecting;

FIG. 8 is a diagram showing a sequence of a wireless protocol related to release of a system hold in a wireless base station and reconnection.

FIG. 9 is a continuation of FIG. 8 showing a sequence of a wireless protocol related to release of the system hold in the wireless base station and reconnection.

FIG. 10 is a flowchart showing an operation of the digital cordless telephone system according to the second embodiment.

FIG. 11 is a continuation of the flowchart of FIG. 10 showing the operation of the digital cordless telephone system in the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 RF part 3 Modulation / demodulation part 4 Channel CODEC part 5 Audio processing part 6 Microphone 7 Receiver 8 Communication control processing part 9 Key operation part 10 Information processing part 11 Display part (display means) 12 Display control part 13 Control part (detection means) , Control means, return means) 101 communication line 102 wireless base station 103 to 106 wireless communication terminal

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 3/42

Claims (25)

[Claims] An on-hold function in a wireless base station for holding a call during communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected, and a function for holding a call during communication on the wireless base station side. Detecting means for detecting a reception state in a wireless communication line with a wireless base station, the operating state of the wireless base station holding function, In, when the reception state detected by the detection means is worse than a predetermined state,
Control means for activating a system holding function in a radio base station. 2. The wireless communication apparatus according to claim 1, wherein said detecting means detects at least one of a received radio wave intensity and a reception quality as a reception state. 3. The radio communication apparatus according to claim 1, wherein the control unit terminates the in-wireless base station holding function and activates the in-wireless base station system holding function. 4. The radio communication circuit according to claim 1, wherein the reference RCR-S
The wireless communication device according to any one of claims 1 to 3, wherein wireless communication based on the self-service mode indicated by TD28 is performed. 5. A display means for receiving and displaying a signal indicating a system suspension state in a radio base station transmitted from the radio base station using a paging channel signal after the activation of the system reservation function in the radio base station. The wireless communication device according to claim 1, further comprising: 6. In a state where the system holding function in the radio base station is operated by the control means, when the reception state detected by the detection means is better than a predetermined state, the system holding function in the radio base station is released. Return means for reconnecting the wireless communication line and activating the hold in the wireless base station,
The wireless communication device according to claim 1, further comprising: 7. A holding function in a wireless base station for holding a call in communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected, and a function for holding a call in communication on the wireless base station side. In a wireless communication device capable of utilizing a system holding function in a wireless base station that disconnects a wireless communication line, receiving means for receiving a wireless communication channel switching instruction sent from the wireless base station; and When the receiving means receives a wireless communication channel switching instruction,
Control means for activating a system holding function in a radio base station. 8. The wireless communication apparatus according to claim 7, wherein the control unit terminates the in-wireless base station holding function and activates the in-wireless base station system holding function. 9. The radio communication circuit according to claim 1, wherein the reference RCR-S
The wireless communication device according to claim 7, wherein wireless communication based on the self-service mode indicated by TD28 is performed. 10. A display means for receiving and displaying a signal indicating a system pending state in a wireless base station transmitted from the wireless base station by using a paging channel signal after the system reserve function in the wireless base station is activated. The wireless communication device according to any one of claims 7 to 9, comprising: 11. A holding function in a wireless base station for holding a call in communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected, and a function for holding a call in communication on the wireless base station side. A wireless communication method applied to a wireless communication device capable of utilizing a system holding function in a wireless base station for disconnecting a wireless communication line by a wireless base station, comprising: a detecting step of detecting a reception state in a wireless communication line with a wireless base station; A control step of activating a system reservation function in a wireless base station when the reception state detected in the detection step is worse than a predetermined state in an operation state of the reservation function in the base station. 12. The wireless communication method according to claim 11, wherein said detecting step detects at least one of a received radio wave intensity and a reception quality as a reception state. 13. The wireless communication method according to claim 11, wherein the control step terminates the on-hold function in the wireless base station and activates the on-hold function in the wireless base station. 14. The wireless communication circuit according to claim 1, wherein the reference RCR-
The wireless communication method according to any one of claims 11 to 13, wherein wireless communication based on the self-service mode shown in STD28 is performed. 15. A display step of receiving and displaying a signal indicating a system hold state in a wireless base station transmitted from the wireless base station using a paging channel signal after the system hold function in the wireless base station is activated, further comprising: The wireless communication method according to any one of claims 11 to 14, comprising: 16. In a state where the system reservation function in the radio base station is operated in the control step, when the reception state detected in the detection step is better than a predetermined state, the system reservation function in the radio base station is released. 2. The method according to claim 1, further comprising a return step of reconnecting the wireless communication line and activating a hold in the wireless base station.
The wireless communication method according to claim 1. 17. A wireless base station holding function for holding a call in communication while holding a wireless communication line between a wireless base station and a wireless communication terminal, and a holding function for holding a call in communication on the wireless base station side. Receiving a wireless communication channel switching instruction sent from the wireless base station, the method comprising: receiving a wireless communication channel switching instruction sent from the wireless base station; And a control step of activating a system holding function in a wireless base station when a wireless communication channel switching instruction is received in the receiving step in an operation state of the holding function. 18. The wireless communication method according to claim 17, wherein the control step terminates the in-wireless base station holding function and activates the in-wireless base station system holding function. 19. The radio communication circuit according to claim 1, further comprising:
19. The wireless communication according to the self-employed mode shown in STD28 is performed.
2. The wireless communication method according to 1. 20. A display step for receiving and displaying a signal indicating a system hold state in a wireless base station transmitted from the wireless base station using a paging channel signal after the system hold function in the wireless base station is activated, further comprising: The wireless communication method according to any one of claims 17 to 19, comprising: 21. A holding function in a wireless base station for holding a call during communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected, and a function for holding a call during communication on the wireless base station side. A computer-readable storage medium storing, as a program, a wireless communication method applied to a wireless communication apparatus capable of using a system holding function in a wireless base station that disconnects a wireless communication line. A detecting step of detecting a reception state in a radio communication line between the radio base station and a station; and, in an operation state of a holding function in the radio base station, when a reception state detected in the detection step is worse than a predetermined state, And a control step of activating the hold function. 22. The wireless communication method according to claim 22, wherein: after the system holding function in the wireless base station is activated,
22. The storage medium according to claim 21, further comprising a display step of receiving and displaying a signal indicating a system hold state in the radio base station sent from the radio base station using a paging channel signal. 23. The radio base station system according to claim 23, wherein, in a state where the system reservation function in the radio base station is operated in the control step, a reception state detected in the detection step is better than a predetermined state. 23. The system according to claim 21, further comprising a return step of releasing the hold function, reconnecting the wireless communication line, and activating the hold in the wireless base station.
3. The storage medium according to 2. 24. A holding function in a wireless base station for holding a call during communication while a wireless communication line between a wireless base station and a wireless communication terminal is connected, and a function for holding a call during communication on the wireless base station side. A computer-readable storage medium storing, as a program, a wireless communication method applied to a wireless communication apparatus capable of using a system holding function in a wireless base station that disconnects a wireless communication line. A receiving step of receiving a wireless communication channel switching instruction sent from the station; and, in an operating state of the wireless base station holding function, activating a system holding function in the wireless base station when the wireless communication channel switching instruction is received in the receiving step. And a control step. 25. The wireless communication method according to claim 24, wherein: after the system holding function in the wireless base station is activated,
25. The storage medium according to claim 24, further comprising a display step of receiving and displaying a signal indicating a system hold state in the radio base station transmitted from the radio base station using a paging channel signal.