JP2001054173A - Callback mobile data communication system and callback mobile data communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively utilize a radio resource. SOLUTION: Putting off assignment of a radio resource occupied in communication and connecting to a MODEM 7 after the end of MODEM negotiation can reduce an occupied time of the radio resource (or release of a radio resource shared by the communication) during the MODEM negotiation of a MODEM 7 so as to assign the radio resource for the share to other communications.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a callback mobile data communication system and a callback mobile data communication method suitable for effective use of radio resources.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional callback mobile data communication system has a mobile network terminal 1, an exchange 4, a protocol converter 5, a public network 6,
A modem 7 and a public network terminal 8 are provided.

When the exchange 4 receives a call request message for data communication from the mobile network terminal 1 to the public network terminal 8, it returns a call request acceptance message to the mobile station 2.

[0004] At this time, the switching center 4 simultaneously allocates radio resources and connects to the other party to the corresponding call, and communicates with the modem in the protocol converter 5 according to the modem setting parameter from the mobile network terminal 1. Immediately after the link with the other party's modem 7 is connected, the process proceeds to the data transfer phase.

[0005]

However, in the above-mentioned conventional callback mobile data communication system,
Modem negotiation time in public network 6 is
Since the time is as long as 0 seconds, there is a problem that radio resources of the radio channel are unnecessarily captured during that time.

[0006] The present invention has been made in view of such circumstances, and it is possible to provide a callback mobile data communication system and a callback mobile data communication method that can effectively utilize radio resources. It is to be.

[0007]

According to the first aspect of the present invention, there is provided a callback mobile data communication system, comprising: a mobile network terminal connected to a mobile station performing wireless communication in a communication area provided by a base station; A public network terminal connected to a public network via a first modem, and a second terminal according to a modem setting parameter from a mobile network terminal captured by an exchange.
A mobile communication system comprising a modem and a protocol converter for connecting a link between the first modem and the first modem, wherein the switching center communicates during the negotiation of the first and second modems. It is characterized by releasing the occupied radio resources. The switching center has a memory for storing a calling subscriber number and a modem setting parameter in a data communication call request message from the mobile network terminal to the public network terminal, and a call request reception message for the mobile device. After the is returned, a switch unit that captures the protocol converter and a call control unit that controls the origination / incoming call of the mobile device and the return control of the call request acceptance message are stored in the memory. A link between the second modem and the first modem is connected in accordance with the set modem setting parameters, a call is re-established to the mobile station, and communication between the mobile network terminal and the public network terminal is performed. Can be started. Further, when the call control unit receives a data communication call request message from the public network terminal to the mobile network terminal, the call control unit transmits a call message to the mobile device and receives a call response message from the mobile device. The calling subscriber number and the modem setting parameters are stored in the memory, and then a call request acceptance message is returned to the public network terminal, and the stored modem setting parameters are set in the second modem. When the negotiation between the second modem and the second modem is completed and a communication link is established, a paging message is transmitted to the mobile station, and when a paging response message is received from the mobile station, the communication between the public network terminal and the mobile network terminal is performed. The communication between them can be started. A first step of performing wireless communication by a mobile network terminal connected to a mobile station in a communication area provided by a base station, and a method of providing a call back mobile data communication method according to claim 4. On the other hand, a second step of performing communication with the mobile network terminal by the public network terminal connected via the first modem, and a second step in accordance with the modem setting parameters from the mobile network terminal by capturing by the exchange. A third step of connecting a link between the modem and the first modem; and a fourth step of releasing radio resources occupied by the communication during negotiation of the first and second modems. Features. Further, the third step includes a fifth step of storing the calling subscriber number and the modem setting parameter in the data communication calling request message from the mobile network terminal to the public network terminal in a memory, In step 4,
A sixth step of making a re-call to the mobile station may be included. In a fifth step, when a data communication call request message from the public network terminal to the mobile network terminal is received, a paging message is transmitted to the mobile station and a call response message from the mobile station is received. An eighth step of storing a calling subscriber number and a modem setting parameter in a call response message in a memory, a ninth step of returning a call request acceptance message to a public network terminal, and a stored modem A tenth step of setting a configuration parameter to the second modem to establish a communication link includes a sixth step of transmitting a call message to the mobile station, And a twelfth step of receiving the call response message. In the callback mobile data communication system and the callback mobile data communication method according to the present invention, during the negotiation of the first and second modems, the exchange cancels the allocation of the radio resource occupied by the communication and connects after the negotiation is completed. By doing so, the occupation time of the radio resource is reduced (or the radio resource occupied by the communication is released), and the radio resource corresponding to the occupation time can be allocated to another communication.

[0008]

Embodiments of the present invention will be described below.

(First Embodiment) FIG. 1 is a block diagram showing a first embodiment of a callback mobile data communication system of the present invention, and FIG. 2 is a block diagram of an exchange and a protocol converter of FIG. FIG. 3 is a block diagram showing details, and FIG. 3 is a diagram showing a sequence when a call is received from a mobile station in the callback mobile data communication system of FIG.

The callback mobile data communication system shown in FIG. 1 includes a mobile network terminal 1, a mobile station 2, a base station 3, an exchange 4, a protocol converter 5, a public network 6, a modem 7, and a public network terminal 8. ing.

The mobile network terminal 1 transmits and receives data and the like via the mobile device 2. The base station 3 provides a communication area of the mobile device 2. The exchange 4 establishes or releases a data communication link between the mobile network terminal 1 and a public network terminal 8 connected to a public network 6 via a modem 7 as a first modem.

The protocol converter 5 has a modem 9 as a second modem, and connects a link between the modem 9 and the modem 7 in accordance with a modem setting parameter.

FIG. 2 shows the details of the exchange 4 and the protocol converter 5.

The switching center 4 includes a signal distribution / combination unit 10, a call control unit 11, a memory 12, and a switch unit 13.

The signal distributor / combiner 10 separates and combines the user data signal and the control signal. The call control unit 11 performs outgoing / incoming calls of the mobile device 2 and returns control of a call request acceptance message. The memory 12 temporarily stores the calling subscriber number from the mobile device 2.

The switch unit 13 performs switching when the protocol converter 5 is inserted between the mobile network terminal 1 and the public network terminal 8.

The protocol converter 5 includes a modem unit 14 and a wireless protocol control unit 15. The modem unit 14 as a second modem mainly supports the V series of ITU-T and receives parameters necessary for connection from the call control unit 11. The wireless protocol control unit 15 performs retransmission control.

Next, the operation of the thus configured callback mobile data communication system will be described.

First, as shown in FIG. 3, when the call control unit 11 of the exchange 4 receives a data communication call request message from the mobile network terminal 1 to the public network terminal 8, the call control unit 11 in the message enters the call request. User number and modem setting parameters in memory 12
To accumulate. Thereafter, the call control unit 11 of the exchange 4 returns a call request acceptance message to the mobile device 2.

Next, when the modem unit 14 of the protocol converter 5 captured by the switch unit 13 is connected to the public network 6, the call control unit 11 sets the previously stored modem setting parameters in the modem unit 14. I do.

Thereafter, modem negotiation is started between the modem unit 14 and the modem 7. When the modem negotiation between the modem unit 14 and the modem 7 is completed and a communication link is established, the modem unit 14
Sends a connection complete message to

Call control unit 11 receiving this message
Reads out the previously stored calling subscriber number from the memory 12 and transmits a calling message to the mobile device 2. Further, upon receiving the call response message from the mobile device 2, the call control unit 11 connects the link of the wireless communication by the switch unit 13, and shifts to the data communication phase.

As described above, in the first embodiment, during the modem negotiation of the modems 7 and 9, the allocation of the radio resource occupied by the corresponding communication is suspended, and the connection is established after the completion of the modem negotiation. Is shortened (or the radio resource occupied by the communication concerned is released), and the corresponding radio resource can be allocated to another communication, so that the radio resource can be effectively used.

In FIG. 3, after the communication link is established, the call control section 11 reads out the calling subscriber number previously stored from the memory 12 and transmits a calling message to the mobile station 2. Although the case has been described, the present invention is not limited to this example, and it is also possible to transmit a connection completion message to a specific terminal instead of a call message, and shift to the data communication phase with a connection completion confirmation message from the specific terminal as a trigger.

Further, in FIG. 3, when connecting to an Internet service provider or the like, by including a login account and a password in the call request message, wireless resources can be effectively used similarly during login and authentication. .

(Second Embodiment) FIG. 4 is a diagram showing a sequence when a call is received from a public network according to a second embodiment of the callback mobile data communication system of the present invention.

That is, when receiving a data communication call request message from the public network terminal 8 to the mobile network terminal 1, the exchange 4 transmits a call message to the mobile station 2. Upon receiving the call response message from the mobile station 2, the exchange 4 stores the calling subscriber number and the modem setting parameters in the message in the memory 12. Thereafter, the exchange 4 returns a call request acceptance message to the public network terminal 8.

Next, the switching center 4 connects the captured modem unit 14 of the protocol converter 5 to the public network 6 by the switch unit 13 and sets the previously stored modem setting parameters in the modem unit 14.

Thereafter, modem negotiation is started between the modem unit 14 and the modem 7. When the modem negotiation between the modem unit 14 and the modem 7 is completed and a communication link is established, the modem unit 14
Sends a connection complete message to

Call control unit 11 receiving this message
Reads out the previously stored calling subscriber number from the memory 12 and transmits a calling message to the mobile device 2. When receiving the call response message from the mobile device 2, the call control unit 11 connects the wireless communication link by the switch unit 13 and shifts to the data communication phase.

As described above, in the second embodiment, even when a data communication call request message from the public network terminal 8 to the mobile network terminal 1 is received, the occupation time of the radio resource is Is shortened (or the radio resource occupied by the communication is released) and the radio resource is allocated to another communication, so that the radio resource can be effectively used.

[0032]

As described above, according to the callback mobile data communication system and the callback mobile data communication method according to the present invention, during the negotiation of the first and second modems, the exchange occupies the radio resources occupied by the communication. By allocating the wireless resources after the completion of the negotiation, the occupation time of the wireless resources is reduced (or the wireless resources occupied by the communication are released), and the wireless resources can be allocated to another communication. Therefore, it is possible to effectively use the radio resources.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a callback mobile data communication system of the present invention.

FIG. 2 is a block diagram showing details of an exchange and a protocol converter of FIG. 1;

FIG. 3 is a diagram showing a sequence when a call is received from a mobile station in the callback mobile data communication system of FIG. 1;

FIG. 4 is a diagram showing a sequence at the time of an incoming call from a public network according to a second embodiment of the callback mobile data communication system of the present invention.

FIG. 5 is a diagram showing a sequence at the time of an incoming call from a mobile device of the conventional mobile data communication device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mobile network terminal 2 mobile station 3 base station 4 switching station 5 protocol converter 6 public network 7 modem 8 public network terminal 9 modem 10 signal distribution / combining section 11 call control section 12 memory 13 switch section 14 modem section 15 wireless protocol control Department

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) H04L 13/00 307A F term (Reference) 5K033 CB02 CB06 CB08 DA06 DA19 DB09 DB12 5K034 BB06 DD03 EE03 EE12 FF13 HH61 LL02 5K051 AA05 BB02 CC01 CC07 DD01 DD15 EE01 EE02 EE04 FF07 GG02 HH02 HH12 HH13 HH15 HH17 HH26 JJ14 5K067 AA12 BB04 BB21 DD13 DD27 DD34 DD51 EE03 EE10 EE16 FF02 FF07 FF13 FF23 FF31 GG02 GG07 H12 GG07 H12 GG02

Claims (6)

[Claims] 1. A mobile network terminal connected to a mobile station performing wireless communication in a communication area provided by a base station, and a public network terminal connected to a public network of an exchange via a first modem. And a protocol converter for connecting a link between a second modem and the first modem in accordance with a modem setting parameter from the mobile network terminal by acquisition by the exchange. The call exchange mobile data communication system, wherein the exchange releases a radio resource occupied by the communication during negotiation of the first and second modems. 2. The mobile station, comprising: a memory for storing a calling subscriber number and a modem setting parameter in a data communication calling request message from the mobile network terminal to the public network terminal; A switch unit that captures the protocol converter after all of the call request acceptance messages are returned; and a call control unit that performs origination / incoming calls of the mobile device and a return control of the call request acceptance message. The call control unit connects a link between the second modem and the first modem according to the modem setting parameters stored in the memory, and performs a re-call to the mobile station. The callback mobile data communication system according to claim 1, wherein communication between the mobile network terminal and the public network terminal is started. 3. The call control unit, upon receiving a data communication call request message from the public network terminal to the mobile network terminal, sends a call message to the mobile device and a call response message from the mobile device. , The calling subscriber number and the modem setting parameter in the call response message are stored in the memory, and thereafter, a call request acceptance message is returned to the public network terminal, and the stored modem setting is set. When a parameter is set in the second modem, a negotiation between the first and second modems is completed and a communication link is established, a call message is transmitted to the mobile device, and a call message is transmitted from the mobile device. Receiving a call response message, starting communication between the public network terminal and the mobile network terminal. Callback movement data communication system according to claim 2. 4. A first step of performing wireless communication by a mobile network terminal connected to a mobile station in a call area provided by a base station, and connecting to a public network of an exchange via a first modem. A second step of performing communication between the mobile network terminal and the mobile network terminal by using a public network terminal, and a second modem and the first modem according to a modem setting parameter from the mobile network terminal by capturing by the exchange. A call connecting a link to a modem, and a fourth step of releasing radio resources occupied by the communication during negotiation of the first and second modems. Back mobile data communication method. 5. The method according to claim 5, further comprising: storing a calling subscriber number and a modem setting parameter in a data communication calling request message from the mobile network terminal to the public network terminal in a memory. The method according to claim 4, wherein the fourth step includes a sixth step of making a re-call to the mobile station. 6. In the fifth step, when a data communication call request message from the public network terminal to the mobile network terminal is received, a call message is transmitted to the mobile station, and the call from the mobile station is performed. A seventh step of receiving a response message, an eighth step of storing a calling subscriber number and a modem setting parameter in the call response message in the memory, and a call request acceptance message to the public network terminal. And a tenth step of setting the stored modem setting parameters in the second modem to establish a communication link. The sixth step includes: The first to send a call message to
The method of claim 5, further comprising: a first step; and a twelfth step of receiving a call response message from the mobile device.