JP3256496B2 - Hybrid IP packet communication system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a wireless terminal device or a LAN terminal device to support a host moving over a wired section or a wireless section or over a wired section and a wireless section on an IP packet transfer network. In some cases, IP
The present invention relates to a hybrid IP packet communication system capable of always accurately specifying host position information without deteriorating IP packet transfer performance of a packet communication system.

[0002]

2. Description of the Related Art A conventional hybrid IP packet communication system has a wireless input / output interface, has a function of transmitting / receiving an IP packet using the wireless input / output interface, and transmits its own IP address to a wireless base station apparatus. Wireless terminal device having a plurality of wireless terminal devices, a wired input / output interface, and a wireless input / output interface, having a function of transferring IP packets between these interfaces, and connected to the wireless input / output interface A plurality of wireless base station devices having a function of reading an IP address given to the device, a LAN interface, and an IP using the LAN interface
A LAN terminal device having a function of transmitting and receiving packets, a plurality of LAN terminal devices, a LAN interface and a wired communication link interface, having a function of transferring IP packets between these interfaces, and a LAN terminal device connected to the LAN interface. An IP having a plurality of LAN terminal accommodating devices and a plurality of wire communication link interfaces having a function of reading out an assigned IP address, and transferring an IP packet between these interfaces
A packet transfer device, a wireless terminal device and a wireless base station device connected by a wireless link, a wireless base station device and an IP packet transfer device connected by a wired communication link,
N terminal device and LAN terminal accommodating device are connected by LAN,
A LAN terminal accommodating device and an IP packet transfer device are connected by a wired communication link, and these devices are combined in a network to form a hybrid IP packet communication system.

However, in the conventional hybrid IP packet communication system, since each wireless base station apparatus does not have a router function, a separate router is used to transfer the IP address of the wireless terminal apparatus to a wired interface for IP packet transfer. For example, it is necessary to notify the IP packet transfer device via a routing protocol such as OSPF via the IP.

In the conventional hybrid IP packet communication system, the LA terminal accommodating device reads out the LA
The IP address of the N terminal device is transmitted to, for example, an OSPF via a wired communication link interface for IP packet transfer.
It has been necessary to notify the IP packet transfer device using a routing protocol such as

Further, the IP packet transfer device specifies the position information of the wireless terminal device or the LAN terminal device based on the input address and the interface number used for the input, and based on these information, Have created their own IP packet forwarding tables.

In such a conventional system, I
The P packet transfer device needs to create the IP packet transfer table to be held by itself, but interrupts the transfer processing of the IP packet while the IP packet transfer device is performing this process. Generally, the load of this processing becomes very heavy as the number of wireless base stations or LAN terminal accommodation devices increases, and thus the time during which the transfer processing of the IP packet is interrupted also becomes long. Therefore, there is a problem in that the transfer capability of the IP packet transfer device becomes apparently very small.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems by providing an IP packet transfer device with an IP packet transfer device.
It is an object of the present invention to provide a hybrid IP packet communication system in which a load for creating a packet transfer table is removed and an IP packet transfer apparatus can concentrate on IP packet transfer.

[0008]

SUMMARY OF THE INVENTION The hybrid I of the present invention
The P packet communication system includes a plurality of wired communication link input interfaces to achieve the above object,
It has a function of specifying the position information of the wireless terminal device or the LAN terminal device based on the IP address input from these interfaces and the interface number used for the input, and furthermore, the IP packet based on these information. A configuration management device having a function of creating an IP packet transfer table to be held by the transfer device and outputting the created table from a wired communication link output interface, wherein each wireless base station device is connected to the configuration management device by a wired communication link. A wired communication link output interface connected to the communication link input interface, wherein each LAN terminal accommodation device is
A wired communication link output interface connected to a wired communication link input interface of the configuration management device by a wired communication link, wherein the IP packet transfer device is connected to a wired communication link output interface of the configuration management device by a wired communication link; A link input interface, wherein each wireless base station device has a function of notifying the configuration management device of the read IP address of the wireless terminal device;
When each LAN terminal accommodating device reads the I
It has a function of notifying the configuration management device of the P address,
The packet transfer apparatus has a function of receiving an IP packet transfer table from the outside and a function of transferring an IP packet using the IP packet transfer table.

According to the present invention, the function of specifying the position information of the wireless terminal device and the function of creating an IP packet transfer table based on the information are transferred from the IP packet transfer device to the configuration management device. And the IP packet transfer apparatus can concentrate on the transfer of the IP packet.

Furthermore, the function of specifying the position information of the LAN terminal device and the function of creating an IP packet transfer table based on the information can be separated from the IP packet transfer device and transferred to the configuration management device. The transfer device can concentrate on the transfer of the IP packet.

Further, a wire communication link input interface is added to the IP packet transfer device, and this is connected to the wire communication link output interface of the configuration management device via a wire link, and an IP packet transfer table is received from the configuration management device. Thus, the IP packet transfer apparatus always has an IP address that accurately indicates the position of the wireless terminal apparatus or the LAN terminal apparatus.
A packet forwarding table can be held, so that IP packet forwarding can be performed accurately.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an example of the configuration of the hybrid IP packet communication system of the present invention. In the figure, 1 is a wireless terminal device, 2 is a wireless base station, 3 is a LAN terminal device,
4 is a LAN terminal accommodation device, 5 is a portable card, 6 is an IP packet transfer device, and 7 is a configuration management device.

The wireless terminal device 1 is connected to the wireless base station 2 by a wireless interface,
The packet and the authentication request frame 15 are transmitted and received. By setting an IP address other than the authentication ID in the authentication request frame, the IP address is notified to the wireless base station.

The wireless base station 2 transmits and receives IP packets to and from the IP packet transfer device 6 via the data transfer link 13. Also, the authentication ID and the IP
An authentication request frame 15 in which an address is set is received, and authentication is performed using an authentication ID. In addition, before the authentication is completed and when the authentication is NG, the transmission / reception of the packet is not performed. If received from the host, the IP packet is discarded. Further, after the authentication, the IP address set in the authentication request is transmitted to the configuration management device 7 by the control link.

The LAN terminal device 3 is connected to the LAN terminal accommodating device 4 by the Ethernet interface 12 and
Send and receive P packets.

The LAN terminal accommodating device 4 transmits and receives IP packets to and from the IP packet transfer device 6 via the data transfer link 13. It also has a slot for a mobile card,
The authentication ID and the IP address are read from the inserted portable card 5, and the authentication processing 16 of the LAN terminal device is performed using the authentication ID. Also, before the authentication is completed and the authentication is NG
In this case, no IP packet is transmitted or received, and an IP address other than the IP address read from the mobile card is
When an IP packet set in the P address is received from the LAN terminal device 3, the IP packet is discarded. Also, the IP read from the mobile card 5 after the authentication is completed.
The address is transmitted to the configuration management device 7 via the control link 14.

The IP packet transfer device 6 transmits an IP packet 1 between the wireless base station device 2 and the LAN terminal accommodation device 4.
7 and 18 are transmitted and received, and the IP packet transfer table 19 is received from the configuration management device 7 via the control link 14. The transmission of the IP packet is performed using this IP packet transfer table.

The configuration management device 7 receives the IP address information 2 received from the wireless base station device 2 and the LAN terminal accommodation device 4.
It creates an IP packet transfer table based on 0 and 21 and its own position information resolution table, and transmits it to the IP packet transfer device 6. FIG. 2 shows an example of the position information solution table. The position information solution table is fixedly set in the configuration management device 7 and is determined based on the input interface number of the control link 14 connected to the wireless base station device 2 and the LAN terminal accommodating device 4, and The interface number in which the terminal device 1 and the LAN terminal device 3 are accommodated is resolved. FIG. 3 shows an example of the IP packet transfer table. The IP packet transfer table includes an IP address and an interface number in which the wireless terminal device 1 and the LAN terminal device 3 in the IP packet transfer device 6 are accommodated. The IP packet transfer table is created by the configuration management device 7, transmitted to the IP packet transfer device 6, and received by the IP packet transfer device 6.
Are used as they are in the IP packet transfer processing.

Next, the wireless terminal device 1 and the LAN in the hybrid IP packet communication system shown in FIG.
The position information management procedure of the terminal device 3 will be described. First, the wireless base station apparatus 2 obtains L
The AN terminal accommodation device 4 reads the authentication ID and the IP address from the ROM of the portable card, respectively. The wireless base station device 2 and the LAN terminal accommodating device 4 perform authentication using the authentication ID. Next, the wireless base station apparatus 2 and the LAN terminal accommodating apparatus 4 connect the IP address 20,
21 is transmitted to the configuration management device 7.

The configuration management device 7 receives the received IP address
The location information of the terminal device is resolved by the location information management table from 20, 21 and the reception interface number, and an IP packet transfer table is created from the IP address and the location information,
This is transmitted to the IP packet transfer device 6. The IP packet transfer device 6 transfers the IP packet to the wireless base station device and the LAN terminal accommodating device by using the received IP packet transfer table as it is.

[0021]

As described above, according to the hybrid IP packet communication system of the present invention, the processing of collecting the position information of the wireless terminal apparatus and the LAN terminal apparatus having a heavy processing load and the processing of creating the IP packet transfer table are performed. Since it becomes possible to disconnect from the IP packet transfer device,
The P-packet transfer device can concentrate on the transfer processing of the IP packet. Even in a situation where the wireless terminal device and the LAN terminal device frequently move, the performance of the transfer of the IP packet is deteriorated as in the conventional method. Can be minimized.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a configuration of a hybrid IP packet communication system according to the present invention.

FIG. 2 is a diagram illustrating an example of a position information solution table.

FIG. 3 is a diagram illustrating an example of an IP packet transfer table.

[Explanation of symbols]

 Reference Signs List 1 wireless terminal device 2 wireless base station 3 LAN terminal device 4 LAN terminal accommodating device 5 portable card 6 IP packet transfer device 7 configuration management device 11 wireless link 12 Ethernet 13 data transfer link 14 control link 15, 16 authentication processing 17, 18 IP packet 19 IP packet transfer table 20, 21 IP address information

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Naoya Kugutsu 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Hiroyuki Hara 3-19 Nishishinjuku, Shinjuku-ku, Tokyo No. 2 Inside Nippon Telegraph and Telephone Corporation (72) Inventor Hiroyuki Suzuki 3-19-2 Nishi Shinjuku, Shinjuku-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (56) References Naoya Watanabe et al., Next-generation computer network Backbone system construction method, NTT R & D, Telecommunications Association of Japan, April 10, 1998, Vol. 47, No. 4, pp. 435-444, 001, CSNH 199800088007 1998 IEICE General Conference B -7-62, March 6, 1998 IEICE Communications Society Conference B-7-50, September 7, 1998 Electronic Information Communications IEICE Communications Society Conference B-7-51, September 7, 1998 (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04L 12/56 H04L 12/46 H04L 12/66 H04L 12/28

Claims (1)

(57) [Claims] A plurality of wireless input / output interfaces having a function of transmitting / receiving IP packets using the wireless input / output interface and a function of notifying an IP address of the wireless communication apparatus to a wireless base station apparatus; It has a wireless terminal device, a wired input / output interface, and a wireless input / output interface, has a function of transferring IP packets between these interfaces, and reads an IP address assigned to a wireless terminal device connected to the wireless input / output interface. A plurality of wireless base station apparatuses having a LAN interface, a LAN interface, and a plurality of LAN terminal apparatuses having a function of transmitting and receiving IP packets using the LAN interface. Of IP packets between different interfaces A plurality of LAN terminal accommodating devices, a plurality of wired communication link interfaces, and a function of reading an IP address given to a LAN terminal device connected to the LAN interface. An IP packet transfer device for transferring packets; a wireless terminal device and a wireless base station device connected by a wireless link; a wireless base station device and the IP packet transfer device connected by a wired communication link; The device and the LAN terminal accommodating device are connected by LAN, and LA
In a hybrid IP packet communication system in which the N terminal accommodation device and the IP packet transfer device are connected by a wired communication link, and these devices are combined in a network form, a plurality of wired communication link input interfaces are provided, and input is performed from these interfaces. Has the function of specifying the position information of the wireless terminal device or the LAN terminal device based on the IP address of the wireless terminal device or the interface number of the interface used for input. A configuration management device having a function of creating an IP packet transfer table to be output and outputting the table from a wired communication link output interface, wherein each wireless base station device is connected to a wired communication link input interface of the configuration management device by a wired communication link. Wired communication link output connected to Each LAN terminal accommodating device has a wired communication link output interface connected to a wired communication link input interface of the configuration management device by a wired communication link, and the IP packet transfer device has a configuration of the configuration management device via a wired communication link. A wireless communication link input interface connected to the wired communication link output interface, each wireless base station device having a function of notifying the readout IP address of the wireless terminal device to the configuration management device; I of the read LAN terminal device
It has a function of notifying the P address to the configuration management device, and the IP packet transfer device has a function of receiving an IP packet transfer table from the outside and a function of performing IP packet transfer using the IP packet transfer table. Hybrid IP packet communication system.