JP2006157582A - Communication information converting device and communication system using same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication information converting device capable of using both communication systems of mobile communication and in-premise IP communication and preventing the speech communication quality of indoor mobile communication from deteriorating without interrupting one communication system when an incoming call is received in the one communication system while the other communication system is used, and provide a communication system that uses the communication information converting device. <P>SOLUTION: The communication information converting device 20 converts communication data from a mobile communication network 10 into a data format corresponding to an IP communication network 13 and conversely converts communication data from the IP communication network 13 into a data format corresponding to the mobile communication network 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication information conversion apparatus provided between a mobile communication network and a local IP wireless communication network, and a communication system using the same.

  There is known a portable terminal including a transceiver that can use both a mobile communication network (for example, FOMA) and a private IP wireless communication network (for example, a wireless LAN based on VoIP). An example thereof is disclosed in Patent Document 1.

  FIG. 8 is a block diagram showing the mobile communication terminal of Patent Document 1. In FIG. Hereinafter, description will be given based on this drawing.

  The mobile communication terminal 101 includes a mobile phone network wireless reception unit 102, a wireless LAN wireless reception unit 103, a communication network detection unit 104, a fading pitch measurement unit 105, and a standby control unit 106. Then, the communication network detection unit 104 determines whether or not the cellular phone network is based on the reception intensity of the radio wave received by the reception unit that is in the standby operation among the reception units of the cellular phone network wireless reception unit 102 and the wireless LAN wireless reception unit 103. It is detected whether the communication area is within the communication range of the wireless LAN. The fading pitch measuring unit 105 measures the fading pitch from the radio wave received by the receiving unit that is in the standby operation among the two receiving units. The fading pitch is a frequency of intensity change of received radio waves, and generally increases as the moving speed of the mobile communication terminal increases. The standby control unit 106 controls the standby operation of both receiving units according to the detection result by the communication network detecting unit 104 and the fading pitch by the fading pitch measuring unit 105. As a result, the mobile communication terminal 101 can reduce power consumption by turning off the standby operation with the poor reception status of both reception units, compared to the case where the standby operation of both reception units is always on. .

JP 2004-88154 A

  However, the conventional portable terminal having a built-in transmitter / receiver for both mobile communication and private IP communication has the following problems.

  (1). When one communication method is used, the other communication method cannot be used. For example, even if an incoming call is received in the other communication method while using one communication method, the other communication method is disconnected.

  (2). In mobile communication in a room, the received electric field strength decreases, so the call quality deteriorates. In using indoor mobile communication, it is assumed that a service area is established (that is, reception field strength and the like are ensured). However, since it is difficult to avoid electric field loss due to buildings and the like, it is difficult to establish an effective service area throughout the room.

  Therefore, an object of the present invention is to use both mobile communication and private IP communication, and even if an incoming call is received in the other communication method while using one communication method, the other communication It is an object of the present invention to provide a communication information conversion apparatus and a communication system using the same, which can prevent deterioration in call quality of indoor mobile communication without interrupting the system.

  The communication information conversion apparatus according to the present invention is provided between a mobile communication network and a private IP wireless communication network. The communication information converting device receives communication data from the mobile communication network, converts the communication data into a data format corresponding to the local IP wireless communication network, and transmits the data to the local IP wireless communication network. A function of receiving communication data from the IP wireless communication network, converting the communication data into a data format corresponding to the mobile communication network, and transmitting the data to the mobile communication network.

  Communication data from the mobile communication network is converted into a data format corresponding to the private IP wireless communication network, and conversely, communication data from the private IP wireless communication network is converted into a data format corresponding to the mobile communication network. In the private IP wireless communication network, both mobile communication and private IP communication can be used. In addition, in the private IP wireless communication network, communication data from the mobile communication network is handled as normal private IP communication, so even if an incoming call is received in the other communication method while using one communication method, the other communication is performed. The system is not interrupted, and the deterioration of call quality of indoor mobile communication is prevented. This is because a general private IP wireless communication network has a function of calling another extension number when there is an extension number that is not responding or in a call. In addition, in the local IP wireless communication network, the arrangement of antennas is taken into consideration so that radio waves can be transmitted and received anywhere in the room.

  The communication information conversion apparatus according to the present invention transmits and receives data to / from the private IP wireless communication network via an IP telephone compatible private branch exchange (hereinafter referred to as “IP-PBX”) already installed in the private IP wireless communication network. Also good. In this case, the IP-PBX may be connectable to the mobile terminal via the indoor wireless data communication device. For example, the indoor wireless data communication apparatus uses a wireless LAN or a private PHS. Furthermore, a communication system according to the present invention includes the communication information conversion apparatus according to the present invention, a mobile communication network, and a local IP wireless communication network.

In other words, the object of the present invention is as follows.
1) Call relief between the mobile communication network and the private IP communication network.
2) Improved communication quality of indoor mobile communication networks.

  Therefore, in order to link the mobile communication network and the local IP telephone (extension), the communication information conversion apparatus shown in FIGS. 1 and 2 has been newly invented. Thus, by linking existing IP-PBX, local wireless LAN device or local PHS device, the public mobile communication network can be used without depending on the indoor service area (such as the received electric field strength of the public mobile communication network). Because the quality of communication on the mobile phone can be improved, the usability of the mobile terminal is improved.

  That is, the communication information conversion device of the present invention receives communication data of a mobile communication network, converts it into a data format corresponding to the local IP communication network, and supports communication data of the local IP communication network to the mobile communication network. Is converted to a data format and transmitted to the mobile communication network. By using such a communication information conversion apparatus and cooperating with IP-PBX, indoor wireless data communication apparatus, etc., a mobile terminal owned by the user can be used. As a result, the communication quality of the mobile communication network in the room is ensured, and the call relief by the other communication method when calling (calling) by one communication method is performed by the function of the IP-PBX (external line-extension number). It can be realized by using a replacement function.

  According to the present invention, communication data from a mobile communication network is converted into a data format corresponding to the private IP wireless communication network, and conversely, communication data from the private IP wireless communication network is converted to a data format corresponding to the mobile communication network. By converting to, both the mobile communication and the private IP communication can be used in the private IP wireless communication network. In addition, in the private IP wireless communication network, communication data from the mobile communication network is handled as normal private IP communication, so even if an incoming call is received in the other communication method while using one communication method, the other communication is performed. It is possible to prevent the system from being interrupted, and to prevent deterioration in call quality of indoor mobile communication.

  In other words, the present invention has the following effects 1) and 2).

1) Call relief Conventional mobile terminals with built-in transmitters and receivers that can use both the mobile communication network and the private IP communication network are “standby for simultaneous incoming calls”. The other communication method will be interrupted if you make a call. By using the IP-PBX number reading function and the detour function, other extension telephones can be used, so that simultaneous transmission / reception in both communication systems is possible.

2) Communication quality improvement of indoor mobile communication network By using IP-PBX and indoor wireless data communication under its control, a communication area that is not affected by the service area of the mobile communication network (electric field loss of radio waves) can be secured.

  FIG. 1 is a block diagram showing an embodiment of a communication system according to the present invention. FIG. 2 [1] is a block diagram showing a configuration of a communication information conversion apparatus in the communication system of FIG. FIG. 2 [2] is a block diagram showing the operation of the mobile communication network-IP communication network data conversion unit in the communication information conversion apparatus of FIG. Hereinafter, description will be given based on these drawings.

  The communication system 1 of the present embodiment includes a mobile communication network 10, a communication information conversion device 20, and a local IP wireless communication network (hereinafter simply referred to as “IP communication network”) 13.

  The communication information conversion device 20 is provided between the mobile communication network 10 and the IP communication network 13. The communication information conversion device 20 receives communication data from the mobile communication network 10, converts the communication data into a data format corresponding to the IP communication network 13, and transmits the data to the IP communication network 13. A function of receiving communication data from the communication network 13, converting the communication data into a data format corresponding to the mobile communication network 10, and transmitting the data to the mobile communication network 10.

  In the communication information converter 20, the communication data from the mobile communication network 10 is converted into a data format corresponding to the IP communication network 13, and conversely, the communication data from the IP communication network 13 is data corresponding to the mobile communication network 10. Converted to format. As a result, the IP communication network 13 can use both mobile communication and private IP communication. In addition, in the IP communication network 13, communication data from the mobile communication network 10 is handled as normal local IP communication, so that even if an incoming call is received in the other communication method while using one communication method, the other communication is performed. The system is not interrupted, and the deterioration of call quality of indoor mobile communication is prevented. This is because the general IP communication network 13 has a function of calling another extension number if there is an extension number that is not responding or talking. Moreover, in the IP communication network 13, the arrangement of antennas and the like are considered so that radio waves can be transmitted and received anywhere in the room.

  Next, the communication system 1 of this embodiment will be described in more detail.

  The mobile terminal 18 is wirelessly connected to the mobile base station 11 and can communicate therewith. A case where the mobile terminal 18 is located in an indoor wireless data communication service area (data communication possible area) will be described. In addition, the mobile terminal 18 is assumed to incorporate a transceiver that can use both communication methods of the mobile communication network 10 and the IP communication network 13.

  1) The mobile terminal 18 uses indoor wireless data communication, and passes through the indoor TRX antenna 17, the wireless data communication access point 16, the indoor wireless data communication device 15, the IP-PBX 14, and the communication information conversion device 20. The mobile communication network-IP communication network data conversion unit 23 transmits the position information and IP-PBX usage information converted into data for the mobile communication network. Here, in the communication information conversion device 20, as shown in FIG. 2 [2], the mobile communication network-IP communication network data conversion unit 23 converts the information in the form of packets into electrical signal information. The mobile transmission unit 21 transmits this to the mobile communication network 10 via the outdoor TRX antenna 12. The function of the mobile communication network-IP communication network data conversion unit 23 can be realized by, for example, hardware (IC) or software (computer and its program). “TRX” is an abbreviation for “transmission / reception”.

  2) When the mobile communication network 10 obtains the information, the mobile communication network 10 by the mobile terminal 18 that has transmitted the information limits the communication on the mobile communication network 10 to the fixed mobile base station 11. As a result, the mobile communication network 10 treats the device connected to the outdoor TRX antenna 12 as if it were one fixed mobile terminal.

  3) Under this situation, the mobile terminal 18 normally performs extension communication using indoor wireless data communication (for example, wireless LAN, private PHS, etc.) as an extension telephone under the IP-PBX 14.

  4) Here, when there is a call (telephone call) from the third party to the mobile terminal 18, the mobile communication network 10 sends the call signal to the outdoor TRX via the limited mobile base station 11. It transmits in the direction of the antenna 12 for use. This operation does not change the current protocol of the mobile communication network 10 at all.

  5) The communication information conversion device 20 that has received the call signal via the outdoor TRX antenna 12 converts the signal data into a data format for IP communication, and sends the data to the IP-PBX 14. Here, in the communication information converter 20, the mobile receiver 22 receives the call signal, and the mobile communication network-IP communication network data converter 23 receives the electrical signal as shown in FIG. 2 [2]. The information is converted into information converted into data in a packet form, and the information is transmitted to the IP communication network 13.

  6) Based on the data, the IP-PBX 14 replaces the telephone number of the mobile communication network 10 with the extension telephone number in accordance with the telephone number and extension number replacement table registered in advance. The mobile terminal 18 in the room is called through the wireless data communication device 15, the wireless data communication access point 16, and the indoor TRX antenna 17, and communication (call) is connected. At this time, when the mobile terminal 18 is in communication, the function of the IP-PBX 14 can be used to make a roundabout incoming call to another extension telephone. These number reading and detouring functions do not deviate from the current general functions performed in the IP-PBX 14.

  7) In the above operations 4) to 6), the mobile terminal 18 called by a third party with the telephone number of the mobile communication network 10 is affected by the service area in the room of the mobile communication network 10. In addition, high-quality communication can be performed using the indoor wireless data communication network, and call relieving can be performed by bypass incoming calls.

  Next, the case where the mobile terminal 18 used as an extension terminal in a room is going to connect directly to the mobile communication network 10 will be described.

  Since the operations from 1) to 3) are as described above, description thereof will be omitted.

  4) Here, when making a direct call (telephone call) from the mobile terminal 18 to the mobile communication network 10, the mobile terminal 18 first uses the mobile communication network 10 directly to the IP-PBX 14. To be notified.

  5) The IP-PBX 14 secures a connection route to the mobile communication network 10 based on the notification, and there is a call from the mobile terminal 18 to the mobile communication network 10 (080 number system or 090 number system). If so, the call data is sent to the communication information exchange device 20. The communication information exchange device 20 converts the call data from the data for the IP communication network to the data for the mobile communication network, and transmits it to the mobile base station 11 via the outdoor TRX antenna 12. Here, in the communication information conversion device 20, as shown in FIG. 2 [2], the mobile communication network-IP communication network data conversion unit 23 converts the information in the form of packets into electrical signal information. The mobile transmitter 22 transmits the information to the mobile communication network 10 via the outdoor TRX antenna 12.

  6) After the above operation, a call can be made by a call connection method in a general mobile communication network 10. The call disconnection (end call) process is the same, and the call can be terminated by a general method of the mobile communication network 10 and the IP telephone network 13.

  Finally, the case where the mobile terminal 18 leaves the area of the IP telephone network 13 will be described.

  1) The mobile terminal 18 uses indoor wireless data communication, and passes through the indoor TRX antenna 17, the wireless data communication access point 16, the indoor wireless data communication device 15, the IP-PBX 14, and the communication information conversion device 20. Then, the mobile communication network-IP communication network data conversion unit 23 transmits the position information converted into data for the mobile communication network and the IP-PBX use end information. Here, in the communication information conversion device 20, as shown in FIG. 2 [2], the mobile communication network-IP communication network data conversion unit 23 converts the information in the form of packets into electrical signal information. The mobile transmitter 21 transmits this information to the mobile communication network 10 via the outdoor TRX antenna 12.

  2) When the mobile communication network 10 obtains the information, the communication of the mobile communication network 10 by the mobile terminal 18 that has transmitted the information is handled as a normal mobile terminal. As a result, the normal state is restored between the mobile terminal 18 and the mobile communication network 10, and the mobile terminal 18 is operated only by mobile communication.

  Next, the operation of the communication system 1 will be described with reference to the time charts of FIGS.

  FIG. 3 is a time chart showing the operation (preparation) of the communication system 1. Hereinafter, a description will be given based on FIGS. 1 and 3.

  FIG. 3 shows a case where the mobile terminal 18 is used as an extension telephone in a room.

  1) The mobile terminal 18 transmits the position information, IP-PBX usage information, and other information used in the mobile communication network 10 via the IP-PBX 14, the communication information conversion device 20, and the mobile base station 11. 10 (steps 31 to 33).

  2) The mobile communication network 10 obtains the above information and restricts the communication route to the mobile terminal 18 to the fixed mobile base station 11 so that wireless communication is possible (step 34).

  3) For the extension number @@@@ of the mobile terminal 18, the use of indoor wireless data communication is registered in advance in the IP-PBX 14 (step 35). Thereby, the IP-PBX 14 can use the indoor wireless data communication device 15 for communication relating to the extension number @@@@. With this preparation process, the mobile terminal 18 is normally used as an extension telephone in indoor wireless data communication.

  FIG. 4 is a time chart showing the operation of the communication system 1 (third-party mobile call). Hereinafter, description will be given based on FIG. 1 and FIG.

  FIG. 4 shows a case where a third party calls the telephone number 090-xxxx-xxxx of the mobile terminal 18 from the state of FIG.

  1) Call information is transmitted from the public telephone network used by a third party to the mobile communication network 10 accommodating the mobile terminal 18 (step 41).

  2) Obtaining the information, the mobile communication network 10 confirms the information of the mobile terminal 18 and calls 090-xxxx-xxxx from the limited mobile base station 11 (wireless data transmission) (steps). 42).

  3) The communication information converter 20 receives the call data, converts it from the data format for the mobile communication network to the data format for the IP communication network, and transmits it to the IP-PBX 14 (step 43).

  4) The IP-PBX 14 reads the data, obtains the extension number @@@@ by a predetermined number replacement function, and uses this to call the mobile terminal 18 in the indoor wireless data communication device 15 (step 44). .

  5) The mobile terminal 18 receives this and responds (step 45), and shifts to a call state by normal IP-PBX extension processing (step 46). At this time, all the call data is converted in data format via the communication information conversion device 20 and transmitted to and received from the mobile communication network 10.

  FIG. 5 is a time chart showing the operation of the communication system 1 (terminal owner call). Hereinafter, a description will be given based on FIGS. 1 and 5.

  FIG. 5 shows a case where the mobile terminal 18 calls a third party having a telephone number 090-****-****.

  1) The mobile terminal 18 (extension number @@@@) calls 090-****-**** (steps 51 and 52).

  2) The IP-PBX 14 that has received the information recognizes that it is the extension number @@@@, and transmits the call data to the communication information converter 20 (step 53).

  3) The communication information conversion device 20 converts the data format for the IP communication network into the data format for the mobile communication network, and transmits this to the mobile communication network 10 (step 54).

  4) Upon receiving this, the mobile communication network 10 performs general call processing, and shifts to a response / call state (steps 55 to 57). At this time, all the call data is transmitted / received via the communication information converter 20.

  FIG. 6 is a time chart showing the operation of the communication system 1 (calling while using extension). Hereinafter, a description will be given based on FIGS. 1 and 6.

  FIG. 6 shows a case where the mobile terminal 18 receives a call of 090-xxxx-xxxx from the mobile communication network 10 while using the extension.

  1) The communication information converter 20 receives this call data, converts it from the data format for the mobile communication network to the data format for the IP communication network, and transmits it to the IP-PBX 14 (steps 62 to 64). .

  2) The IP-PBX 14 reads the data and prepares a call using the extension number @@@@ of the mobile terminal 18 by a predetermined number replacement function.

  3) When the IP-PBX 14 recognizes that the extension number @@@@ is busy, it calls another extension telephone \\\ by a preset detour route (steps 61, 65 to 67). .

  4) The other extension telephones \\\\ receives and responds to the call, and shifts to a call state by normal extension processing of the IP-PBX 14 (steps 68 and 69). At this time, all the call data is converted in data format via the communication information conversion device 20 and used for transmission / reception with the mobile communication network 10.

  In addition, when the mobile terminal 18 is called with the extension number @@@@ during a call on the mobile communication network 10, it can be handled by another extension telephone using the detour function of the IP-PBX 14 as described above. To do. At this time, when the mobile terminal 18 is to be called from a third party by 090-xxxx-xxxx, a busy or a message is returned to the caller by a general process of the mobile communication network 10. .

  FIG. 7 is a time chart showing the operation of the communication system 1 (outing the terminal). Hereinafter, description will be given based on FIG. 1, FIG. 2, and FIG.

  FIG. 7 shows a case where the mobile terminal 18 leaves the area of the IP telephone network 13.

  1) The mobile terminal 18 uses indoor wireless data communication, and is converted into mobile communication network protocol data by the mobile communication network data conversion unit 23 in the communication information conversion apparatus 20 via the IP-PBX 14. The received position information and IP-PBX use end information are transmitted (step 71). At this time, the IP-PBX 14 recognizes the absence of the extension number @@@@ (step 72) and returns a blockage or absence message to the extension number @@@@ caller (steps 76 and 77). .

  2) When the mobile communication network 10 obtains the information, the mobile communication network 10 handles the communication on the mobile communication network 10 by the mobile terminal 18 that has transmitted the information as a normal mobile terminal (steps 73 to 75). As a result, the normal state is restored between the mobile terminal 18 and the mobile communication network 10, so that only the mobile communication is used.

1 is a block diagram showing an embodiment of a communication system according to the present invention. FIG. 2 [1] is a block diagram showing a configuration of a communication information conversion apparatus in the communication system of FIG. FIG. 2 [2] is a block diagram showing the operation of the mobile communication network-IP communication network data conversion unit in the communication information conversion apparatus of FIG. It is a time chart which shows operation | movement (preparation) of the communication system of FIG. It is a time chart which shows the operation | movement (third-party mobile call) of the communication system of FIG. It is a time chart which shows operation | movement (terminal owner call) of the communication system of FIG. It is a time chart which shows the operation | movement (call during extension use) of the communication system of FIG. It is a time chart which shows operation | movement (terminal going out) of the communication system of FIG. It is a block diagram which shows a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Communication system 10 Mobile communication network 11 Mobile base station 12 Outdoor TRX antenna 13 IP communication network (local IP wireless communication network)
14 IP-PBX (IP phone compatible private branch exchange)
DESCRIPTION OF SYMBOLS 15 Indoor wireless data communication apparatus 16 Access point for wireless data communication 17 Indoor TRX antenna 18 Mobile terminal 20 Communication information converter 21 Mobile transmission part 22 Mobile reception part 23 Mobile communication network-IP communication network data conversion Part

Claims (8)

A communication information conversion device provided between a mobile communication network and a local IP wireless communication network,
A function of receiving communication data from the mobile communication network, converting the communication data into a data format corresponding to the local IP wireless communication network, and transmitting the data to the local IP wireless communication network;
A function of receiving communication data from the local IP wireless communication network, converting the communication data into a data format corresponding to the mobile communication network, and transmitting the data to the mobile communication network;
A communication information conversion apparatus comprising: Transmit / receive to / from the local IP wireless communication network via an IP telephone compatible private branch exchange installed in the local IP wireless communication network;
The communication information conversion apparatus according to claim 1. The IP telephone-compatible private branch exchange can be connected to a mobile terminal via an indoor wireless data communication device.
The communication information conversion apparatus according to claim 2. The indoor wireless data communication device uses a wireless LAN or a local PHS.
The communication information conversion apparatus according to claim 3.
The communication information conversion device according to claim 1, the mobile communication network, the local IP wireless communication network,
A communication system comprising: The communication information converter transmits and receives to / from the local IP wireless communication network via an IP telephone compatible private branch exchange that is already installed in the local IP wireless communication network.
The communication system according to claim 5. The IP telephone-compatible private branch exchange can be connected to a mobile terminal via an indoor wireless data communication device.
The communication system according to claim 6. The indoor wireless data communication device uses a wireless LAN or a local PHS.
The communication information conversion apparatus according to claim 7.

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