JP3230155B2 - Wireless communication device and recording medium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication device using the Internet, and more particularly to a process when a mobile terminal device moves to another server.

[0002]

2. Description of the Related Art In recent years, needs for mobile computing have been increasing. In this mobile computing, data is transmitted and received by connecting a computer to the existing Internet using a mobile telephone line or the like. To use the mobile phone line for the line used,
It has a feature that communication is possible from a movable place such as a car.

[0003]

However, in the conventional communication apparatus, since a communication protocol for fixed communication is used, a mobile terminal apparatus moves over subnets and communicates. There is a problem that can not be. In addition, since a telephone line is used, it takes a long time to make a connection, and it cannot be used when there are many telephone users and the line is busy.

[0004] The present invention has been made in view of such circumstances, and provides a communication device capable of performing communication even when a mobile terminal device moves between subnets without using a telephone line. The purpose is to:

[0005]

According to the first aspect of the present invention, there is provided at least an apparatus connected to the Internet by a wire.
Is also available for one wireless server and one wireless server.
At least one connected by a line and equipped with a mobile radio
From a terminal device that communicates with the base station
The terminal device is connected to the radio via the base station radio.
By connecting to the line server,
A wireless communication device connected to the Internet, wherein
In the terminal device, one of the wireless servers is a home wireless server.
The wireless server has a terminal device.
During the registration authentication, the registration
In response to the request, the wireless server receiving the registration request
If the terminal device is not the home wireless server,
The home wireless server of the terminal is determined, and the registration
Request a certificate from the home wireless server,
According to the authentication result, while performing the registration authentication of the terminal device,
The currently used home wireless server
Requesting issuance of a usable IP address,
Assigns the IP address issued by the server to the terminal device.
It is characterized by hitting.

According to a second aspect of the present invention, the wireless server
Is a registration request from the terminal device at the time of terminal registration authentication.
The terminal device and the home wireless server of the terminal device
Sends an authentication request to both
Authentication response from the terminal device and the home wireless server
Receipt, based on the result of matching the contents of the two authentication responses,
It is characterized in that end registration authentication is performed.

According to a third aspect of the present invention, the wireless server
Is a wireless server other than the home wireless server
If the terminal device was previously connected,
The packet data addressed to the terminal device reaches the wireless server
The IP address obtained from the home wireless server
The terminal device connects this packet data based on the
Transfer to a wireless server that has been established.

According to a fourth aspect of the present invention, the wireless server
Is a wireless server other than the home wireless server
Connected from the wireless server to the terminal device.
When packet data is transferred, this packet
To the host on the Internet side that sent the data
At this time, the wireless server to which the terminal device is connected.
And the packet data transmitted after this notification
Directly, without going through the previously connected wireless server.
Send to the wireless server to which the terminal device is connected.
Features.

According to a fifth aspect of the present invention, in the wireless server,
For the network to which the wireless server is connected
A broadcast information receiving unit for receiving the broadcast information, and a broadcast
Out of the broadcast levels classified by subject
Broadcast corresponding to the terminal device connected to the line server
A broadcast level definition part in which a level is defined;
The received broadcast information according to the broadcast level
A broadcast information restructuring unit for reconstructing the broadcast information every time.
The broadcast information reconstructed in the broadcast reconstructing unit is transmitted to the terminal device.
It is characterized in that it is delivered to the device.

[0010] The invention according to claim 6 is the wireless server.
For the network to which the wireless server is connected
A receiver that receives multicast information
A multicast information receiving unit;
Terminals for which grouping is defined for each terminal device to be distributed
Receiving information according to the grouping.
And distributes the multicast information to the terminal device.
And a distribution destination determination unit that determines the distribution destination when
Features.

The invention according to claim 7 is the invention according to claim 1.
Device that performs terminal device connection processing in a wireless server
Computer readable recording connection program
A recording medium, wherein the terminal device connection program is
In response to the registration request sent by the terminal device, the registration request
Is the home wireless server of the terminal device
If not, the home wireless server of the terminal device is assigned.
The home wireless server performs registration authentication of the terminal device.
Request the terminal device according to the authentication result of the home wireless server.
Register and authenticate the device, and determine the home wireless server
Of currently available IP addresses to the server
Request for the IP address issued by the home wireless server.
Assigning a terminal to the terminal device by a computer
Is performed.

The invention according to claim 8 is the invention according to claim 5.
Of wireless servers to be broadcast
Broadcast information distribution program that performs distributed broadcast information distribution processing
Is a computer-readable recording medium on which
The broadcast information distribution program is configured so that the wireless server
Broadcast information broadcast to the connected network
The receiving process and the received broadcast information are classified into the levels.
Refer to the broadcast level definition section that defines
Information rebuilding process, and a terminal connected to the wireless server.
Sending the reconstructed broadcast information to the end
It is characterized in that it is performed by a computer.

The invention according to claim 9 is the invention according to claim 6.
That perform multicast processing on wireless servers
Computer reading recorded cast information distribution program
A recording medium that is capable of reading the multicast information.
The broadcast program receives the multicast information.
And destination of multicast information with reference to terminal information
Process to determine the
And let the computer perform the process of delivering the cast information.
It is characterized by that.

[0014]

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a radio communication device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment. In this figure,
Reference numeral 1 is a host server. Reference numeral 2 denotes a network to which a host server is connected. Reference numeral 3-n denotes a wireless server connected to the network 2. Sign 2
a, 2b, and 2c are sub-networks constructed under the management of the wireless server 3-n. Reference numeral 4-n denotes a base transceiver connected to the wireless server 3-n, and a plurality of base transceivers 4-n are connected to one wireless server 3-n. Here, only one base station radio 4-n is shown for one radio server 3-n. Reference numeral 5 denotes a terminal device that is connected to the wireless server 3-n by wireless communication, and includes a mobile wireless device (hereinafter, referred to as a mobile device) 5a that performs wireless communication with the base wireless device 4-n, Machine 5
and a computer terminal (hereinafter, referred to as a terminal) 5b connected to the terminal a. Note that the host server 1 may be a wireless server that communicates with a terminal wirelessly,
It does not necessarily have to have the function of wireless communication.

In the terminal device 5, any one of the wireless servers 3-n connected to the network 2 is a home server. Here, it is assumed that the home server of the terminal device 5 shown in FIG. 1 is the wireless server C3-3.

Next, the operation of the communication apparatus according to the embodiment will be described with reference to FIGS. FIG. 2 is an explanatory diagram illustrating an operation of the wireless communication device according to a time change. In FIG. 2, “Dst” represents a transmission destination,
“Src” represents a transmission source. 3, 4, 5, and 6 are flowcharts showing the operation procedure of the wireless communication device.

Here, the home server of the terminal device 5 is:
At present, the terminal device 5 is used as the wireless server C3-3.
Is operating under the management of the wireless server A3-1.

First, the operation when the terminal device 5 moves from the subnetwork 2a of the radio server A3-1 to the subnetwork 2b of the radio server B3-2 will be described.

First, the terminal device 5 requests the wireless server B3-2 for terminal registration authentication and IP address issuance (see FIG. 2A and step S1 in FIG. 3). In response, the wireless server B3-2 performs registration authentication and IP address issuance (see step S2 in FIG. 2A and FIG. 3), whereby the terminal device 5 is controlled by the wireless server B3-2. Can work. Note that the registration authentication operation and the IP
The address issuing operation will be described later.

Next, in the wireless server B3-2, the terminal device 5 moves from the management of the wireless server A3-1 to the management of the wireless server B3-2 with respect to the wireless server C3-3 as the home server. Notification of completion of registration authentication (FIG. 2B, step S3 in FIG. 3).

Next, the wireless server C3 as a home server
-3, in response to the registration completion notification from the wireless server B3-2, notifies the wireless server A3-1 that the terminal device 5 has moved under the management of the wireless server B3-2 (FIG. 3). Step S5). Thereby, the wireless server A3-1
Receives the registration completion notification (step S4 in FIG. 3) and stops managing the terminal device 5 (step S6 in FIG. 3). Also,
The wireless server C3-3 (home wireless server) records that the terminal device 5 is under the management of the wireless server B3-2, and updates the management information (Step S7 in FIG. 3).

Also, the fact that the terminal device 5 has moved has been notified to the wireless server A3-1 via the wireless server C3-3 as a home server. This is to determine whether the user has moved.

With such an operation, the terminal device 5 can move under the control of another wireless server.

Next, the operation of the host server 1 transmitting a packet to the terminal device 5 will be described with reference to FIGS. First, the host server 1 transmits an IP packet via the network 2 (Step S11 in FIG. 4). At this time, the host server 1 determines that the terminal device 5 is a wireless server B3.
Since it is not informed that the terminal device 5 is under the management of the terminal device 5, the transmission packet from the host server 1 is transmitted to the wireless server A3-1 to which the terminal device 5 was previously connected (FIG. 2).
(C)).

Subsequently, the wireless device server A3-1 receives the packet (step S12 in FIG. 4) and routes the packet to the wireless server B3-2 so that the packet is transmitted to the wireless server B3-2. (Step S13 in FIG. 4, FIG. 2D), the wireless server B3-2 receives this packet (Step S14 in FIG. 4). Further, the wireless server B3
-2 is routed to the mobile device 5a of the terminal device 5 under management (step S15 in FIG. 4) and transmitted to the mobile device 5a (see FIG. 2E). Further, this packet is transmitted to the terminal 5
b (see FIG. 2 (f)).

Thus, the terminal device 5 can receive the packet transmitted from the host server 1.

Next, the operation of transmitting a packet from the terminal device 5 to the host server 1 will be described with reference to FIGS. First, the terminal 5b transmits a packet to the mobile device 5a (FIG. 2 (g)). Subsequently, the mobile device 5a transmits the packet received via the wireless server B3-2 (FIG. 2 (h)).

Next, the wireless server B3-2 receives the packet (step S21 in FIG. 5), routes the packet to the host server 1, and sends out the IP packet received from the terminal device 5 to the host server 1 (FIG. 5). 2 (i), step S22 in FIG. Next, the host server 1 receives this packet (Step S23 in FIG. 5). At this point, the host server 1 determines from the source address of this packet
Since it is possible to know that the terminal device 5 is under the management of the wireless server B3-2 (step S24 in FIG. 5), the subsequent packet transmission to the terminal device 5 is directly performed by the wireless server B3.
This is performed for 3-2.

Next, from the host server 1 to the wireless server B3
When transmitting a packet to -2, the packet is first transmitted to the wireless server B3-2 (FIG. 2 (j), step S31 in FIG. 6).

Next, the radio server B3-2 receives this packet (step S32 in FIG. 6) and routes it to the terminal device 5 (step S33 in FIG. 6) to transmit it to the mobile device 5a (FIG. 2 (step S33)). k)). Further, this packet is transmitted to the terminal device 5 (FIG. 2 (l)).

As described above, since the IP packet is transferred when the packet is transmitted / received to / from the terminal device 5, every time the terminal device 5 moves, all the hosts are sent to the host. Since there is no need to notify that the device 5 has moved, concentration of traffic on the communication line can be prevented.

Next, the operation of issuing an IP address will be described with reference to FIG. First, when the terminal device 5 moves to the communication area of the wireless server B3-2,
A request for issuing an IP address is issued to 3-2.

Next, the wireless server B3-2 determines the home wireless server of the terminal device 5 that has issued the request (here, the wireless server C is the home server).
A request to issue an IP address is issued to 3-3.

Next, an IP address assignment request is issued to the DHCP server 6-3 (server that issues an IP address) connected to the wireless server C3-3 (home server). Subsequently, the DHCP server 6-3 issues an IP address that can be used at this time in response to the request, and notifies the wireless server C3-3 of the issued IP address.

Next, the wireless server C3-3 transfers the issued IP address to the terminal device 5 via the wireless server B3-2. When the wireless server B3-2 is the home server of the terminal device 5, the DHCP server 6-3
2 may issue an IP address.

According to this operation, the IP address issued by the wireless server C3-3 can be used for the terminal device 5 operating under the control of the wireless server B3-2. Is the wireless server C3-3
, And the packet can be transmitted to the terminal device 5 via the wireless server B3-2.

As described above, in response to the IP address issuance request from the terminal device 5, even if the wireless server to be connected at this time is not the home wireless server, the IP address is sent from the home wireless server via this wireless server. Since it is issued, it is possible to connect to another wireless server without changing the setting of the IP address of the terminal device 5.

Next, the registration authentication operation will be described with reference to FIGS. First, the terminal device 5 is connected to the wireless server B3.
The registration request (FIG. 9A) and the identification number of the terminal device 5 are transmitted to the terminal device 2 in FIG.

Next, the wireless server B3-2 searches whether or not the authentication data of the terminal device 5 which has issued the request exists in the database 7-2 connected to the wireless server B3-2. As a result, if there is no authentication data in the database 7-2, the terminal device 5
It is determined that the terminal device 3 is not the terminal device 5 which is the home server, and the home server of the terminal device 5 is determined from the received identification number, and an authentication request is sent to the home server (the wireless server C3-3 in this example). Send (Fig. 9
(B)).

At this time, an authentication request is made by adding the random value generated by the wireless server B3-2 and the identification number of the terminal device 5 making the registration request. Further, this random value is also transmitted to the terminal device 5 (FIG. 9C).

Next, the wireless server C3 as a home server
-3 receives the authentication request and calculates the authentication process using the simultaneously received random value and identification number.

Next, the wireless server C3-3 returns the result of the authentication processing to the wireless server B3-2 (FIG. 9).
(D)).

On the other hand, the terminal device 5 is connected to the wireless server B3-2.
The calculation of the authentication process is performed using the random value received from the server, and the result is returned to the wireless server B3-2 (FIG.
(E)).

Next, the wireless server B3-2 checks the authentication processing results received from the wireless server C3-3 and the terminal device 5 (FIG. 9 (f)). Subsequently, if the result of the verification is identical, the registration request is approved (FIG. 9).
(G)). If the collation results do not match, the registration request is denied as an invalid registration request.

When the authentication data is stored in the database 7-2, since the wireless server is the home server, the authentication operation includes a “registration request” ((a) shown in FIG. 9),
“Authentication request” ((c) shown in FIG. 9), “authentication response” ((e) shown in FIG. 9), “registration acceptance” ((g) shown in FIG. 9)
You only need to do it.

As described above, even when the terminal device 5 is not under the control of the wireless server as the home server, the terminal registration can be authenticated.

Next, a wireless communication apparatus according to another embodiment of the present invention will be described with reference to the drawings. The embodiment described below describes an operation of broadcasting certain information to each terminal device 5.

FIG. 10 is a block diagram showing the overall configuration of the embodiment. In this figure, reference numeral 1a denotes a broadcast terminal device for creating and transmitting information to be broadcast. Reference numeral 3-2 denotes a broadcast terminal device 1a by the network 2.
The wireless server B is connected to the wireless server B. This wireless server B3
-2, four base station radios 4-2, 4-4 to 6 are connected, and terminal devices 5-1 to 4-4 are connected to these base station radios 4-2, 4-4 to 6 respectively. Is connected.

Although four base station radios 4-2, 4-4 to 6 are shown for the radio server B3-2, five or more base station radios may be connected. Also, one base transceiver 4-2
Although one terminal device 5-1 is illustrated in FIG. 2, two or more terminal devices 5 may establish wireless communication with one base wireless device.

Next, an operation of broadcasting the broadcast information from the broadcast terminal device 1a will be described with reference to FIG. Simultaneous distribution of the same information to a plurality of terminal devices is called broadcast or broadcast. First, an operator creates information to be broadcast using the broadcast terminal device 1a. FIG. 15 shows the format of the broadcast information created here.
As shown in this figure, the information to be broadcast includes a header portion and a plurality of pieces of information. In this example, it is assumed that there is information divided into four pieces.

In the header part, an identifier indicating that the information is broadcast information, a network address for broadcasting the broadcast information, and sizes of information 1 to 4 subsequent thereto are defined.

Since the information following the header portion is not necessary for the terminal device 5 to be broadcast, all the information is seldom necessary. ing. In the example shown in FIG. 15, it is divided into four.

The term “level division” used herein refers to, for example, simultaneous broadcasting in an emergency. For example, a terminal device owned by an individual (level 1), a terminal device owned by a local government (level 3), and a fire department A broadcast level number is assigned to each of the terminal device owned by the user (level 7) and the terminal owned by the police (level 15). As described above, the terminals receiving the broadcast are classified into levels in advance, and are assigned broadcast level numbers corresponding to the levels (hereinafter, referred to as broadcast levels).

As shown in FIG. 15, a broadcast level number bit is assigned to the information 1 to 4 as shown in FIG.
If the bit is “1”, it indicates that the terminal needs the information. In the example shown in FIG. 15, information 1 is assigned to the least significant bit, and information 4 is assigned to the most significant bit in the following order.

For example, a terminal that needs only information 1
Since only the least significant bit is “1”, the broadcast level number is “1”. For a terminal that needs all the information 1 to 4, the broadcast level number is “15” because all 4 bits are “1”. Further, a terminal that does not require all information has the broadcast level number “0”.

As described above, when there are four pieces of information, 16 types of levels from level numbers "0" to "15" can be classified. Even when the number of pieces of information is large, a level number can be similarly assigned by increasing the number of bits.

The broadcast information is based on this level division.
The information to be broadcast is created in a state of being divided into a plurality of pieces.

Next, the broadcast terminal device 1a broadcasts the created broadcast information to the specified network 2. Here, the broadcast network 2 does not need to be the network to which the broadcast terminal device 1a is connected, and may broadcast to another network by specifying another network address.

The broadcast terminal device 1 may be constituted by a computer device having an input / output device.

Next, the broadcast information is transmitted to the radio server B3-
2 will be described. FIG. 11 is a block diagram illustrating a configuration of the wireless server B3-2. FIG. 13 is a flowchart illustrating the operation of the wireless server B3-2.

First, the broadcast information receiving unit 3a provided in the wireless server B3-2 receives the broadcast information distributed from the broadcast terminal device 1a (step S41), and transmits the broadcast information. It is held in the broadcast information receiving unit 3a. At this time, the broadcast information receiving unit 3a determines whether this information is broadcast information based on whether or not the header of the distributed information includes an identifier indicating the broadcast information.

Subsequently, the broadcast information restructuring unit 3b reads out the broadcast information held in the broadcast information receiving unit 3a, and at the same time, is connected with reference to the broadcast level definition unit 3e. The read broadcast information is reconstructed so as to match the broadcast levels of the terminal devices 5-1 to 4 (step S42). Reconstruction here means, of all received broadcast information,
The purpose is to exclude information that the receiving terminal device 5 does not need and to construct broadcast information using only necessary information.
In addition, the broadcast level definition unit 3e stores the terminal device 5-1 currently connected to the wireless server B3-2 at the present time.
Level numbers and communication channels of the broadcast levels are defined.

Next, the channel selection unit 3c refers to the broadcast level definition unit 3e, selects a channel corresponding to each terminal device 5 (step S43), and transmits the reconstructed broadcast information to the transmission unit. Hand over to 3d.

Next, the transmitting section 3d is connected to the channel selecting section 3c.
And the broadcast information received from the channel selector 3c is set to each of the terminal devices 5-1 to -4.
(Step S44).

The wireless server B3-2 and the terminal device 5-
When communication is established between the terminal devices 5-1 to 4 by packet communication, the channel selecting unit 3c converts the address of the transmission destination to the address of each of the terminal devices 5-1 to 4 so as to transmit the packet. You may.

As described above, the radio server 3 that receives the broadcast information created by dividing the broadcast information into a plurality of pieces of information.
2 reconstructs the broadcast information according to the broadcast level of the connected terminal device 5 and transmits only necessary information to the terminal device 5, so that the terminal device 5
Only necessary information can be received.

Next, an embodiment of the terminal device 5 for selecting and receiving broadcast information will be described with reference to FIGS. FIG. 12 is a block diagram illustrating a configuration of the terminal device 5-n. FIG. 14 is a flowchart showing the operation of the terminal device 5 shown in FIG.

The operation of the terminal device 5 will be described with reference to FIGS. First, as described above, the broadcast terminal 1
The broadcast information is created by a, and is broadcast in the designated network 2. Subsequently, the wireless server B3-2 receives the broadcast information broadcast and distributes the broadcast information to the mobile terminals 5-1 to 4 as it is.

In the following description, the terminal devices 5-1 to 4-1
Are the same, the terminal device 5-1 will be described as an example. When the broadcast information is distributed from the wireless server B3-2, the broadcast information receiving unit 5a provided in the terminal device 5-1 is provided.
Receives the broadcast information (step S51) and stores it in the broadcast information receiving unit 5a. At this time, the broadcast information receiving unit 5a determines whether the information is the broadcast information based on whether or not the header indicating the broadcast information is included in the header of the distributed information.

Next, the broadcast information extracting unit 5b reads out the broadcast information held in the broadcast information receiving unit 5a and, at the same time, refers to the broadcast level definition unit 5d to read the terminal device 5b.
-1, only necessary information is extracted (step S5).
2). At this time, since the broadcast level is defined in the terminal device 5-1 in the broadcast level definition unit 5d, only the relevant information is extracted from the broadcast information shown in FIG. 15 according to the broadcast level number. I do.

Next, the broadcast information extracting section 5b displays the extracted broadcast information on the display section 5c (step S53). Thereby, the display unit 5c provided in the terminal device 5-1 is provided.
Only information necessary for the terminal device 5-1 is displayed.

As described above, only necessary information is extracted from the received broadcast information and displayed, so that information unnecessary for the terminal device 5 can be eliminated.

Further, since the determination as to whether or not it is necessary for the terminal device 5 is made based on the level division defined for each terminal device 5, the terminal which broadcasts the information transmits the information to the terminal device 5. Information to be broadcasted can be selected.

In the above description, the terminal device 5 with which communication has been established wirelessly has been described as an example. However, the terminal device with which communication has been established by wire is connected to the wireless server B3-2. They may be mixed. Further, the configuration of the terminal illustrated in FIG. 12 can be applied to a terminal device that establishes communication by wire.

The terminal device 5 having the configuration shown in FIG. 12 may be directly connected to the network 2.

The broadcast information is not limited to text data, but may be voice data or a signal having a specific meaning. At this time, the display unit 5c shown in FIG. 12 may be replaced with a speaker that emits a sound or an alarm device that receives a signal and emits an alarm sound, depending on the type of the received broadcast information.

Next, an embodiment capable of distributing the same information to a plurality of terminal devices 5 (this is called multicast) will be described with reference to FIGS. The broadcast simultaneously distributes the same information to all terminal devices connected to the designated network, whereas the multicast distributes the same information to a specific terminal device at the same time.

FIG. 16 is a block diagram showing the configuration of the wireless server B3-2. In FIG. 16, reference numeral 3f denotes a multicast information receiving unit that receives the multicast information via the network 2. Reference numeral 3g denotes a distribution destination determining unit that determines a distribution destination of the multicast information. A transmission unit 3h transmits the received multicast information to the terminal device 5. Reference numeral 3i denotes the terminal device 5
Is a terminal information storage unit in which a home wireless server and a wireless server to be connected at the present time are defined.

FIG. 17 is a flowchart showing the operation when the multicast information is distributed to the terminal device 5.

The terminal devices 5 connected to the radio server A3-1, the radio server B3-2, and the radio server C3-3 shown in FIG. 1 are preliminarily grouped when receiving multicast information. Is assigned to each terminal device 5. The group ID is managed by the home wireless server of each terminal device 5, and a correspondence table between the identification number of the terminal device 5 and the group ID is provided in the terminal information storage unit 3i in each home wireless server.

First, from the terminal device 5 to the wireless server B3-2
, A terminal registration request is transmitted. At this time, the terminal device 5 transmits the identification number of the terminal device 5.
In response, the wireless server B3-2, as described above,
Authenticate the terminal. Subsequently, the wireless server B3-2 notifies the home wireless server (here, the wireless server C3-3) of the information of the terminal device 5, and the home wireless server registers the information. Thereby, the home wireless server (wireless server C3-3) can obtain the group ID of the terminal device 5 from the wireless server to which the terminal device 5 that has made the registration request is connected and the received identification number.

Next, the home wireless server (wireless server C3)
-3) notifies the wireless server B3-2 of the group ID of the registered terminal device 5 when the registration of the terminal from the wireless server B3-2 is completed. In response,
The wireless server B3-2 registers the group ID in the terminal information storage unit 3i. Thereby, the wireless server B3-
In addition to the group ID of the terminal device 5 that uses the wireless server B3-2 as a home wireless server, the terminal information storage unit 3i provided in the wireless communication server 2 stores other wireless servers connected to the wireless server B3-2. Terminal device 5 to be a home wireless server
Will be registered.

Next, the operation of transmitting a multicast packet from a certain terminal device 5 and receiving it by the radio server B3-2 and distributing it to each terminal device 5 will be described.

First, in one of the terminal devices 5, information to be multicast is created. The multicast information includes an identifier indicating that the information is multicast information, a network address of a transmission destination, and a group ID indicating a distribution target.
Then, this multicast information is transmitted to the specified network 2. The terminal device 5 that creates the multicast information may be connected to any network, and the destination network is arbitrary.

Next, the multicast information receiving section 3f provided in the radio server B3-2 receives the multicast information (step S61). At this time, the multicast information receiving unit 3f determines whether the received information includes an identifier indicating that the information is multicast, and determines whether this information is multicast information. The received multicast information is held in the multicast information receiving unit 3f.

Next, the distribution destination determining section 3g reads out the multicast information held in the multicast information receiving section 3f and, at the same time, refers to the contents stored in the terminal information storage section 3i to read the multicast information. Is determined (step S62). At this time, the distribution destination determining unit 3g checks the group I included in the multicast information.
D is extracted, and the terminal device 5 corresponding to the group ID is extracted by referring to the content stored in the terminal information storage unit 3i. When extracting the terminal device 5, among the terminal devices 5 currently connected to the wireless server B 3-2, the corresponding group I
If there is a terminal device 5 having D, the terminal device is assumed to be a terminal device that distributes multicast information.

On the other hand, when the terminal device 5 having the wireless server B3-2 as a home wireless server is connected to another wireless server and has a group ID to which the multicast information is distributed. , Distribution destination determination unit 3
g determines the wireless server to which the terminal device 5 is connected, and sets the determined wireless server as a distribution destination.

Next, the distribution destination determining unit 3g transmits the multicast information received by the multicast information receiving unit 3f to each terminal device 5 at the time when the distribution destination is determined, via the transmitting unit 3h (step S3). S63).

As described above, the same information can be delivered to a specific terminal device 5 by referring to the contents stored in the terminal information storage unit 3i. Further, since the multicast information is also transferred to the terminal device 5 connected to another wireless server, the multicast information can be reliably delivered to the terminal device 5.

A program for implementing the steps shown in FIGS. 3, 4, 5, 6, 13, and 17 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is stored in a computer system. May be read and executed to perform terminal connection, broadcast, and multicast processing. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a portable medium such as a floppy disk, a magneto-optical disk, a ROM, a CD-ROM, and a storage device such as a hard disk built in a computer system.

Further, a “computer-readable recording medium” is a program which is dynamically transmitted for a short time, such as a communication line for transmitting a program through a network such as the Internet or a communication line such as a telephone line. In this case, a program that holds a program for a certain period of time, such as a volatile memory in a computer system serving as a server or a client in that case, is also included. Further, the program may be for realizing a part of the functions described above, or may be for realizing the functions described above in combination with a program already recorded in the computer system.

That is, in a computer-readable recording medium recording a terminal connection program for performing a terminal connection process, the terminal connection program has a function of performing terminal authentication in response to a registration request from the terminal device, I available at that time in response to the IP address issuance request
The function of issuing a P address is realized by a computer.

The above-mentioned terminal connection processing program is
When a registration request is issued from a terminal device to a wireless server other than the home wireless server, authentication of connection and issuance of an IP address are performed to the home wireless server of the terminal device via the Internet. In response to the request, when the authentication of the connection and the issuance of the IP address are performed from the home wireless server, the computer is further realized with a function of permitting the connection of the terminal device with a wireless server other than the home wireless server.

[0095] When the terminal device is connected to a wireless server other than the home wireless server, the terminal connection program described above transmits packet data addressed to the terminal device to the wireless server to which the terminal device was previously connected. When it arrives,
Based on the IP address obtained from the home wireless server, the computer further implements a routing function of transferring the packet data to a wireless server to which the terminal device is connected.

[0096] Further, the terminal connection program described above, when the terminal device is connected to a wireless server other than the home wireless server and packet data addressed to the terminal device is transferred from the wireless server, transmits the packet data. At this point, the host on the Internet side is notified of the wireless server to which this terminal device is connected, and packet data transmitted after this notification is sent without passing through the wireless server to which it was previously connected. In addition, the function of directly transmitting the terminal device to the wireless server to which the terminal device is connected is realized by the computer.

In a computer-readable recording medium on which a broadcast information distribution program for performing a broadcast process is recorded, the broadcast information distribution program has a function of receiving the distributed broadcast information and a terminal device based on the received broadcast information. The computer realizes a function of extracting only necessary information by referring to contents defined in the broadcast level definition unit and a function of displaying only information extracted from broadcast information.

Further, in a computer-readable recording medium on which a multicast information distribution program for performing a multicast process is recorded, the multicast information distribution program has a function of receiving multicast information,
The computer realizes a function of determining a distribution destination of the multicast information with reference to the terminal information and a function of distributing the multicast information based on the determined distribution destination.

By using the above-described wireless communication device, it becomes possible to communicate at the destination where the mobile terminal has moved, and it is possible to perform message communication (e-mail, net news, FTP (file transfer protocol)), voice mail , Web distribution, CTI (Computer Tele
phony Integration: Internet telephony, broadcast, telemetering, ITS (Int
elligent Transport system
m: Intelligent transportation system). If a routing function is used, it can be applied to push-type communication.

[0100]

As described above, according to the present invention, one wireless server is positioned as a home server for a terminal device , and in response to a registration request sent from the terminal device,
Upon receiving the registration request, the wireless server sets the home
Home server of the terminal device
The line server is determined, and the registration and authentication of the terminal
Line server and respond to the authentication result of the home wireless server.
In addition to performing terminal device registration and authentication,
IP currently available to the wireless server
Request the issuance of an address, and the home wireless server
Since the assigned IP address is assigned to the terminal device, the terminal device can communicate in an area other than the home server. Ma
In response to an IP address issuance request from a terminal device,
The wireless server you are trying to connect to at the moment
Home wireless server via this wireless server
The server to issue an IP address.
Other wireless services without changing the IP address settings
The effect that it becomes possible to connect to the bus is obtained.

Further, according to the present invention, at the time of terminal registration authentication,
In response to the registration request from the terminal device,
And the home wireless server of the terminal device at the same time.
Sends a certificate request and sends an authentication response to this
Received from the device and home wireless server, two authentication responses
Terminal registration and authentication are performed based on the result of content verification.
It is said that fraudulent registration requests can be rejected
The effect is obtained.

According to the present invention, the IP packet is transferred when the packet is transmitted / received to / from the terminal device. Therefore, every time the terminal device moves, all the hosts are transmitted. Since there is no need to notify that the terminal device 5 has moved, the effect of preventing concentration of traffic on the communication line can be obtained.

Further, according to the present invention, it is possible to distribute only information required by a terminal device according to the broadcast level of the terminal device connected to the wireless server that has received the broadcast information. Is obtained.

Further, according to the present invention, the same information can be distributed to a specific terminal device by referring to the content stored in the terminal information storage section.
Furthermore, since the multicast information is also transferred to the terminal device connected to another wireless server,
The effect is obtained that the multicast information can be reliably delivered to the terminal device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a procedure of transmitting a packet in the embodiment.

FIG. 3 is a flowchart illustrating a procedure of transmitting a packet according to the embodiment.

FIG. 4 is a flowchart illustrating a procedure of transmitting a packet in the embodiment.

FIG. 5 is a flowchart showing a procedure of transmitting a packet in the embodiment.

FIG. 6 is a flowchart illustrating a procedure of transmitting a packet according to the embodiment;

FIG. 7 is an explanatory diagram showing an address issuing procedure in the embodiment.

FIG. 8 is an explanatory diagram showing a terminal authentication operation in the embodiment.

FIG. 9 is an explanatory diagram showing a terminal authentication operation in the embodiment.

FIG. 10 is a block diagram illustrating a configuration of another embodiment.

FIG. 11 is a block diagram illustrating a configuration of a wireless server B3-2 that performs broadcasting in another embodiment.

FIG. 12 is a block diagram illustrating a configuration of a terminal device 5-n that receives broadcast information according to another embodiment.

FIG. 13 is a flowchart showing an operation of the wireless server B3-2 shown in FIG.

FIG. 14 is a flowchart showing an operation of the terminal device 5-n shown in FIG.

FIG. 15 is an explanatory diagram showing a format of broadcast information.

FIG. 16 is a block diagram illustrating a configuration of a wireless server B3-2 that performs multicasting in another embodiment.

17 is a flowchart showing an operation of the wireless server B3-2 shown in FIG.

[Explanation of symbols]

1 ... host server, 2 ... network, 3-n
... Wireless server, 4-n ... Base transceiver, 5 ...
Terminal device, 5a: mobile wireless device, 5b: computer terminal, 6-n: DHCP server, 7-n:
Database.

Continuation of front page (56) References JP-A-10-173665 (JP, A) JP-A-10-145369 (JP, A) JP-A-9-261739 (JP, A) JP-A-10-63598 (JP, A) , A) JP-A-4-227149 (JP, A) WO 97/14244 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04B ^7/ 24-7/26 102 H04Q 7/00-7/38 H04L 12/28 G06F 13/00 351

Claims (9)

(57) [Claims] 1. An Internet connection via a wire
At least one wireless server of at least a wired to a single said wireless server
Connected to a terminal device equipped with a mobile radio
And a base station that communicates with the terminal device via the base station.
Connecting the terminal device to the
A wireless communication device connected to a wireless network, wherein the terminal device has one of a wireless server and a home wireless server.
Server, and the wireless server is
At the time of terminal device registration authentication, in response to the registration request sent by the terminal device,
The wireless server that has received the request is the home wireless server of the terminal device.
If it is other than the server, the home wireless server of the terminal device is
Calculate the registration and authentication of the terminal device to the home wireless server.
Request, and according to the authentication result of the home wireless server, the terminal
Performs device registration and authentication, and determines the home wireless service
Of the IP address currently available to the server
Requesting issuance, IP address issued by home wireless server
Address to the terminal device.
Wireless communication device. 2. The wireless server according to claim 1, wherein at the time of terminal device registration authentication, a registration request
The terminal device and the home wireless server of the terminal device
Sends an authentication request to both
Authentication response from the terminal device and the home wireless server
Receipt, based on the result of matching the contents of the two authentication responses,
2. Device registration authentication is performed.
Wireless communication device. 3. The wireless server, when the terminal device is connected to a wireless server other than a home wireless server, packet data addressed to the terminal device reaches a wireless server to which the terminal device was previously connected. at the time it was, based on the IP address obtained from the home wireless server, according to claim 1, characterized in that to transfer the packet data to the wireless server to the terminal device is connected or
Or the wireless communication device according to 2. 4. The wireless server, when the terminal device is connected to a wireless server other than the home wireless server and packet data addressed to the terminal device is transferred from the wireless server, To the host on the Internet side that sent,
At this time, the wireless server to which the terminal device is connected is notified, and the packet data transmitted after this notification is transmitted directly to the wireless server to which the terminal device is connected, without passing through the wireless server to which the terminal device was previously connected. 4. The wireless communication device according to claim 1, wherein the wireless communication device transmits the data to a server.
Place. 5. The broadcast server, comprising: a broadcast information receiving unit that receives broadcast information broadcast to a network to which the wireless server is connected; and a broadcast that is divided into levels according to broadcast targets. A broadcast level definition unit defining a broadcast level to which the terminal device connected to the wireless server among the levels corresponds, and, according to the broadcast level, the broadcast information received by the broadcast server. comprising a broadcast information reconstruction unit to reconstruct each level, a claim that the broadcast information reconstructed in the broadcast information reconstruction unit, characterized in that distributed to the terminal device
5. The wireless communication device according to any one of 1 to 4. 6. The wireless server, wherein: a multicast information receiving unit that receives multicast information multicast to a network to which the wireless server is connected; and a grouping is defined for each of the terminal devices that distributes the multicast information. a terminal information storage unit has, according to according to the grouping, wherein the received the multicast information and a delivery destination determining section for determining the delivery destination in the case of distributing for the terminal device Any of items 1 to 5
A wireless communication device according to claim 1. 7. A computer-readable recording medium storing a terminal device connection program for performing a terminal device connection process in the wireless server according to claim 1, wherein the terminal device connection program is transmitted by the terminal device. This registration
The wireless server that has received the request is the home wireless server of the terminal device.
If it is other than the server, the home wireless server of the terminal device is
Index, and relies on the registration / authentication home wireless server of the terminal device.
Request the terminal device according to the authentication result of the home wireless server.
Register and authenticate the device, and determine the home wireless server
Of currently available IP addresses to the server
Request for the IP address issued by the home wireless server.
A recording medium storing a terminal device connection program, which causes a computer to perform a process of assigning a terminal to the terminal device. 8. A computer-readable recording medium storing a broadcast information distribution program for performing a distribution process of broadcast information classified according to an object to be broadcast in the wireless server according to claim 5 , The broadcast information distribution program includes: a process of receiving broadcast information broadcast to a network to which the wireless server is connected; and a broadcast level in which the received broadcast information is defined by the level division. A process of reconstructing the broadcast information with reference to a definition unit, and a process of transmitting the reconstructed broadcast information to a terminal connected to the wireless server. A recording medium on which a broadcast information distribution program is recorded. 9. A computer-readable recording medium recording a multicast information distribution program for performing a multicast process in the wireless server according to claim 6 , wherein the multicast information distribution program comprises: a process of receiving multicast information; A multicast information distribution program characterized by causing a computer to perform a process of determining a multicast information distribution destination with reference to terminal information and a process of distributing multicast information based on the determined distribution destination is recorded. recoding media.