JPH06252846A - Radio communications system mobile radio station equipment and fixed radio station equipment - Google Patents

Abstract

PURPOSE:To improve the success probability of automatic re-dialing generating a free signal when a speech channel free message is received within a predeter mined time after transmission of a re-request signal and restoring to the standby state when the message is not received. CONSTITUTION:When a radio channel controller 26 discriminates a caller to be a contract party, a talking transmitter 21, a receiver 22 give a command of searching free speech channel. When a radio base controller informs of the absence of the free speech channel is through the search, the transmission of a re-request message is commanded through a control channel. The controller 26 sends a re-request message and allows a radio base station to search the free speech channel for a predetermined time. Thus, when the presence of the free speech channel is shown within a predetermined time, transmission of data representing the free speech channel and a free channel detection message including an ID is commanded through a control channel. Furthermore, when the presence of the free speech channel is not shown, the mode is released and the other processing is selected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cordless telephone device,
The present invention relates to a wireless communication system such as an automobile / mobile phone communication system.

[0002]

2. Description of the Related Art Conventionally, in a cellular radio communication system, baseband data (forward control channel message) is transmitted from a radio base station for controlling channel change and the like and is received by a radio communication device. Each process is performed. By the way, a re-request (R-
ecoeder) message and interrupt (Interc)
ept) message is carried. Here, the re-request message informs the user that all the call channels are in use and the calling operation must be performed again. The suspend message is also used to notify the user that a procedure error has occurred when the call is activated. Incidentally, there are the following cases in what is called a procedure error.

(1) When a call is activated in a service area of a wireless telephone company other than the contracted wireless telephone company (provided that this wireless telephone company does not permit roaming with the contracted wireless telephone company).

(2) The internal data (electric serial number, telephone number) of the wireless telephone terminal at the time of making a contract with the wireless telephone company and at the time of making a call are lost due to a device failure, illegal modification, unregistered wireless telephone terminal, etc. If you don't.

Thus, for example, JP-A-63-180231
The wireless communication device disclosed in Japanese Patent Laid-Open Publication No. 58-36869 is adapted to automatically recall when receiving a re-request message. Further, the interruption message is treated in the same manner as the re-request message, and the automatic re-call is made.

[0006]

However, the function of the automatic re-calling is that the call is automatically activated at a predetermined time of the mobile terminal, and when this call is activated, the radio base station It's not that the call channel is empty. Therefore, the re-request message is transmitted again from the radio base station.

[0007]

A wireless communication system of the present invention communicates with a wireless fixed station device via a control channel and a call channel with the wireless fixed station device, and a caller including a dial number via the control channel. A wireless communication system having a wireless mobile station device for transmitting a call message, wherein the wireless fixed station device searches for an idle call channel in response to receiving the call message and detects the idle call channel. When this occurs, a message indicating the idle call channel is transmitted to the wireless mobile station device via the control channel, and when an idle call channel cannot be detected, a re-request message is transmitted via the control channel, and the re-request is sent. When a vacant call channel is detected within a predetermined time after sending a message, communication is performed via the control channel. The wireless mobile station device comprises means for transmitting a channel idle message, the wireless mobile station device performs a call process when a message indicating an idle call channel is received in response to the transmission of the call message, and when the re-request message is received A means for counting a predetermined time and generating a call channel empty signal when the call channel idle message is received within the predetermined time, and returning to a standby state when the call channel idle message cannot be received within the predetermined time To do.

[0008]

Since the present invention is configured as described above, the radio mobile station apparatus has a very high probability of success when a call is reissued, and the user recognizes that the communication channel is available. be able to. In addition, the wireless fixed station device can restrict unnecessary radio waves by prohibiting unnecessary call operation from the mobile device, and can further facilitate control in the wireless fixed station device.

[0009]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows cell configurations (1) to (7) used in a cellular type mobile phone or the like (hereinafter referred to as a mobile phone). Each cell (1)-(7) has its own radio base station (8)-(14) and overlaps the adjacent area, especially when the mobile phone moves from one cell to another. Guarantees comprehensive coverage. Each of the radio base stations (8) to (14) of each cell has one mobile telephone switching station (MobileTelephone Sw-itc).
Hing Office (MTSO) (15) is connected via a conventional landline or microwave network.
The MTSO (15) controls and monitors the connection to another MTSO (16) or public telephone network (PSTN) (17).

FIG. 2 shows a block diagram of a radio base station and an MTSO. Each of the radio base stations (8) to (14) is
Antenna sharing device (18), radio base station transceiver (1
9), which is composed of a radio base station control device (20), transmits and receives radio waves, and transmits a call signal between a mobile phone and a radio line control device (27) described later, a control signal transmission, and a radio for cell tracking switching. Monitor the line quality. The radio base station transceiver (19) includes a call transmitter (21) and a call receiver (22) for a call channel, a control transmitter (23) and a control receiver (for a control channel). Two
4) and SAT (S-upperview Audi)
o Tone) monitoring transceiver (25).

The MTSO (15) is an MTSO composed of a radio network controller (26) and an automatic exchange (27).

The wireless line controller (26) controls and commands for switching the wireless line settings of the wireless base stations (8) to (14). That is, the data received from the radio base station control device (20) via the incoming control channel is analyzed, and the radio base station control device (20) is instructed about the set channel, the data to be transmitted, etc. via the transmission control channel. It will be. In addition, the mobile telephone exchanges data necessary for moving from one cell to another cell via the tracking switching control channel with the radio base station controller (20).

The automatic exchange (27) is a PSTN (17).
It also performs connection with other MTSO (16), charging processing for mobile phone, storage of subscriber location registration information, and the like. Incidentally, the data regarding the connection is carried out via the signal relay channel.

Thus, the radio base station and the MTSO can communicate with other mobile telephones and the like via a call channel.

FIG. 3 is a flow chart of a main program written in a microprocessor (not shown) that controls the wireless line control device (26), and the operation will be described based on this program. First, one of the wireless base stations receives a calling message from the mobile telephone via the control channel, and the calling message is sent to the wireless base station control device (2
0), the wireless line control device (26) stores the received call message (step S1) and, at the same time, calls the subscriber information (subscriber telephone number and electric serial number) of the caller from the call message. Number) (hereinafter referred to as ID) is read (step S2), the ID of the registered caller is compared with the ID sent by the caller, and it is determined whether or not the user is a contractor (step S3).
The subscriber information is registered in each wireless line control device (26) when the mobile phone is purchased and a contract is made with the service company. If it is a contractor, the radio base station controller (20) is instructed to send a suspension message to the caller via the control channel (step S4). If the user is a contractor, the call transmitter and the receivers (21) and (22) are instructed to search for unused call channels, that is, empty call channels (step S5). When the wireless base station control device (20) informs that there is no free call channel by such a free channel search (for example, in a traffic state), it instructs to send a re-request message on the control channel (step S6). , 7). When the presence of an idle call channel is notified, the control channel is instructed to transmit a call channel assignment message including data for informing the mobile telephone of the frequency of this call channel (step S8). . After that, the process shifts to conversation processing (step S10).

Further, the wireless line control device (26) causes the wireless base station to search for a free communication channel for a predetermined time after sending the re-request message in step 7 in the traffic state etc. (steps S9, 12). As a result, when it is notified that there is a free call channel within a predetermined time, a free channel detection message including data indicating that there is a free call channel in the control channel and the ID in the message stored in step S1 is sent. To do so (step S11). If it is not notified that there is a free call channel within a predetermined time, this mode is canceled and the process proceeds to another process (step S12). Although it has been described that the idle channel detection message particularly includes the ID, the message transmitted from the above-described wireless base station includes the ID. Further, in the following description of the mobile telephone, this message is referred to as a forward control channel message, and a message from the mobile telephone to the radio base station is referred to as a reverse control channel message. Naturally, the channels for each are the forward control channel and the reverse control channel, and different frequencies are selected.

FIG. 4 shows a block diagram of a mobile telephone in a cellular system, in which (28) and (29) are reception circuits and transmission circuits, which are connected to an antenna duplexer (30) and a voice processing unit (31), And wireless base stations (8) to (1
4) Basic wireless communication with is realized. A data receiving circuit (32) receives a forward control channel message from the output of the discriminator in the receiving circuit (28). (33) is a data transmission circuit, which is coupled to the transmission circuit (29) for encoding the reverse control channel message in Manchester code format and transmitting it to the radio base stations (8) to (14). (34) is an indicator, (3
5) is a buzzer, and (36) is a key circuit including a numeric keypad, a send key, and an end key. (37) is a control circuit composed of an 8-bit microprocessor, which sends a message to the data receiving circuit (34) and the data transmitting circuit (35).
Send and receive via.

FIG. 5 is a flow chart of the program of the main part of the control circuit (37) of the cellular type mobile telephone, and the operation will be described based on these. First, after turning on the power,
The control circuit (37) performs initial setting (step T
1) After that, when it is detected that the user has made a call operation to the caller by using a predetermined key (numerical key + send key) (step T2), the input dial number is stored in the internal memory (step T3). The reverse control channel is searched (step T4), and it is determined whether the area is the service area by a known method (step T5). And the control circuit (37)
If it is not a service area, the display (34) displays "NO S
ERROR "is displayed for a predetermined time, and a buzzer (35) produces an intermittent tone for the same time as this display, and the process returns to step T2 (step T11). ).
Here, the calling message includes the data and ID of the dial number stored in step T3. Further, the forward control channel message in the cell is read via the data receiving circuit (32) (step T7), and the state of the busy-idle bit is detected (step T8).
Here, the Hiji-Idle bit is for notifying the idle state of the reverse control channel of a specific cell. If the reverse control channel of the cell in which the self is present is blocked, the transmission of the calling message being transmitted is interrupted (step T9), and "B" appears on the display (34).
Displaying "USY" for a predetermined time and buzzer (37)
Generates an intermittent sound for the same time as this display and returns to step T2 (step T10). If the reverse control channel is free, the call message continues to be transmitted.
Thereafter, it is detected whether or not the forward control channel message with the matching ID is received from the radio base station within a predetermined time (steps T12 and T13). If the signal cannot be received within the predetermined time, the display device (34) displays a "communication error" for a predetermined time, and the buzzer (35) causes an intermittent sound to be generated for the same time as this display.
(Step T14).

If the received ID matching message is an interruption message, "Inte" is displayed on the display (34).
“Rcept” is displayed for a predetermined period of time, and an intermittent sound is generated by the buzzer (35) for the same period of time as this display.
It returns to 2 (steps T15 and T16). If the received ID matching message is the re-request message, it is determined that the traffic is waiting for an idle call channel, and the idle channel wait timer included in the control circuit (37) is activated (steps T17 and T18). Then, the display (34) displays "waiting for a free call channel" and the buzzer (35) generates an intermittent tone, and the process returns to step T2 (step T21).

If the ID matching message is a channel assignment message, the call processing has succeeded, so the control circuit (37) carries out the conversation processing via the communication channel according to a well-known procedure (step T1).
9, T20).

Then, the standby state (step T2)
Then, if the above-mentioned idle channel timer is operating (of course, the above-mentioned display and intermittent sound continue), the control circuit (37) receives the forward control channel message with the same ID as described above. It is detected whether or not (steps T22 and T24). When the control circuit (37) receives the idle channel detection message with the matching ID within the predetermined time, it releases the idle channel timer and displays "call channel idle" on the display (34) for a predetermined time. At the same time, the buzzer (35) generates an intermittent sound for the same time as this display (step T23).
~ 27). After this, the process proceeds to step T4, and the process of steps T4 to 21 described above is repeated based on the dial number that was called last time (based on the data of the dial number stored in step T3 last time) to call again. To do.

In the above mode, if the end key is operated or the idle channel timer counts a predetermined time, the idle channel waiting timer is released, and the display of step 21 is canceled and the step T2
(Steps T28 to T30).

Although the embodiment of the system relating to the cellular type mobile telephone has been described here, it can be easily considered to be applied to the cordless telephone system.

[0024]

The present invention is constructed as described above, and the success rate of automatic re-calling is extremely high, and the convenience is improved. Also in the wireless fixed station device, unnecessary radio waves are reduced, and the wireless channel management can be facilitated.

[Brief description of drawings]

FIG. 1 is a cell configuration diagram used in a cellular mobile phone or the like.

FIG. 2 is a block diagram of a radio base station and MTSO of the present invention.

FIG. 3 is a flowchart of a main program written in a microprocessor of the radio base station control device of the present invention.

FIG. 4 is a block diagram of the mobile phone of the present invention.

FIG. 5 is a flowchart of a main program written in the control circuit of the mobile phone of the present invention.

[Explanation of symbols]

 20 radio base station control device 26 radio line control device 27 automatic exchange 37 control circuit

Claims (3)

[Claims] 1. A wireless fixed station device, and a wireless mobile station device that communicates with the wireless fixed station device via a control channel and a call channel and transmits a calling message including a dial number via the control channel. In the wireless communication system, the wireless fixed station device searches for an idle call channel in response to receiving the call message, and when the idle call channel is detected, the idle call channel is sent via the control channel. Is transmitted to the wireless mobile station device, and when an idle call channel cannot be detected, a re-request message is sent via the control channel, and an idle call channel is sent within a predetermined time after the re-request message is sent. A means for transmitting a talk channel free message through the control channel when detected. The wireless mobile station device, in response to the transmission of the call message, performs a call process when a message indicating an idle call channel is received, measures a predetermined time when the re-request message is received, and Radio communication comprising means for generating a call channel idle signal when the call channel idle message is received within a predetermined time, and returning to a standby state when the call channel idle message cannot be received within the predetermined time system. 2. A wireless fixed station device that communicates with a wireless mobile station device via a control channel and a call channel and receives a call message including a dial number via the control channel, in response to receiving the call message. Then, when a free call channel is detected, a message indicating the free call channel is transmitted to the wireless mobile station device through the control channel when the free call channel is detected, and when the free call channel cannot be detected,
A means for transmitting a re-request message via the control channel, and transmitting a call channel idle message via the control channel when a free call channel is detected within a predetermined time after the re-request message is transmitted. A wireless fixed station device characterized by the above. 3. A wireless mobile station apparatus that communicates with a wireless fixed station apparatus via a control channel and a call channel, and transmits a calling message including a dial number via the control channel, wherein the wireless fixed station apparatus is the In response to the transmission of the calling message, the call processing is performed when the message indicating the idle call channel is received, the predetermined time is counted when the re-request message is received, and the idle call channel message is received within the predetermined time. A radio mobile station apparatus comprising means for generating a call channel idle signal when the above-mentioned condition occurs, and returning to a standby state when the call channel idle message cannot be received within the predetermined time.