JPH01293733A - Method for structuring communication network - Google Patents

Abstract

PURPOSE:To improve the effective efficiency of the time slot of a local area network(LAN) by setting an information channel and a signal channel in the LAN according to a calling request from a terminal. CONSTITUTION:The calling request of the terminal reaches the internal part of a node 200 as packets, and the request is separated into the packets at a frame control means 201 and given to a processing means 202. The means 202 sets the information channel between a node, to which a subscriber exchange is connected, and this node 200 by a time slot setting means 209. Further, the node, to which the exchange is connected, sets the information channel and the signal channel between the node and the exchange. Moreover, an inter-node signal channel is set by using that a packet transmitting function on a loop transmission line can be obtained by a packet communication control means 203. The information channels and the signal channel are multiplexed by a multiplexing means 204 on the loop transmission line 210 and can access to the loop transmission line 210 by a loop control means 205.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides
The present invention relates to a method of configuring a communication network by combining local area networks (LANs) and subscriber exchanges to provide switching services over a wide area.

BACKGROUND OF THE INVENTION Conventionally, in the construction of this type of communication network, signals from terminal subscriber lines were directly connected to subscriber exchanges.

That is, FIG. 3 shows the functional configuration of a conventional node. In FIG. 3, 110 is a subscriber line, 210 is a loop transmission line, 401 is a frame control means that interfaces with the adder line 110, and 402 is a frame control means 4.
Multiplexing means 403 multiplexes and demultiplexes signals on the loop transmission path based on the signal from 01, and 403 is a loop control means that inputs and outputs signals to and from the loop transmission path 210.

Next, the operation of the above conventional example will be explained. In FIG. 3, the subscriber line 110 is connected in advance to its transmission channel capacity (for example, in the ISDN user/network basic interface, so-called 2B+D, i.e., 144 Kb/s).
) is specified by a time slot on the loop transmission path and set between the terminal and the subscriber exchange.

Thereby, a call setup request issued from a terminal is transmitted to the subscriber exchange through the channel, and the exchange service can be received.

In order to solve the problem that the invention aims to solve, it is a prerequisite that a large capacity channel can be provided within the LAN, and the transmission speed of the LAN must also increase in proportion to the number of terminals, that is, in proportion to the amount of channels. There was a problem with becoming.

The present invention solves these conventional problems and provides an excellent communication network configuration that can increase the effective efficiency of IC1LAN time slots by setting channels in response to call requests from terminals. The purpose is to provide a method.

Means for Solving the Problems In order to achieve the above object, the present invention provides a LAN node with a packet processing means, a packet communication control means, a time slot setting means, a multiplexing means, a frame control means, and a loop control means. L is set up in response to a call request from a terminal.
An information channel is set up within the AN, and as a result, an information channel is established between the terminal, the LAN, and the local exchange, and packets issued from the terminal are transmitted and relayed to the local exchange using the signaling channel. It was designed to do so.

Effects The present invention has the following effects due to the above structure. That is, a node receives a call connection request packet issued from a terminal through a signal channel on the subscriber line, and an information channel (however, information on the subscriber line (with the same transmission capacity as the subscriber exchange), and also establishes an information channel with the subscriber exchange.

As a result, an information channel is established between the terminal, the LAN, and the subscriber exchange. Regarding signal channels, an intra-LAN signal channel is set up between the nodes by means of packet processing means, and a terminal and L
This signaling channel is also set up between the AN and the local exchange.

As a result of the above, an information channel and a signal channel have been established between the terminal and the local exchange, and control signals from the terminal can be transmitted and relayed to the local exchange to receive exchange services from the local exchange. can.

The subscriber exchange that has received the call request sets up an information channel and a signal channel between the subscriber exchange, the LAN, and the called terminal in the opposite direction from when the call was made, aiming at the called terminal.

In this way, it is possible to allocate LAN time slots and set up information channels in response to call requests from terminals.

Embodiment FIG. 1 is a diagram showing a communication network configuration according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of the functional configuration of nodes constituting the communication network of the present invention.

In Figure 1, 100 is I! a terminal device having a 44N interface, 110 a subscriber line accommodating the terminal device;
200 is a node, 210 is a loop transmission line, 220 is a subscriber line accommodating a subscriber exchange, 230 is a loop local area network (LAN), and 300 is a subscriber line exchange.

In FIG. 2, 201 is a signal sent from a terminal,
Frame control means 202, which separates information channels and signal channels or conversely multiplexes these channels and transmits and receives transmission frames, is connected to the signal channel of the frame control means and extracts and extracts packets of the signal channel.
(1) When a call setting request packet from the terminal is detected, the time slot setting means is activated and the LAN
(2) When a line disconnection request packet is detected, the information channel is opened and the information channel is set up between the node in question and the node to which the local exchange is connected. This is a packet processing means that relays packets of the signal channel.

203 is a packet communication control means for transmitting and receiving signal channel packets of the packet processing means to and from the transmission path; 204 is a means for multiplexing the information channel from the frame control means and the signal channel from the packet communication control means; At the same time, it is a multiplexing means that separates the signal from the transmission path into an information channel and a signal channel.

205 is a loop control means that interfaces with the multiplexing means and the loop transmission line and performs input/output of signals to and from the loop transmission line; 209 is a loop control means for setting an information channel from the frame control means to a time slot on the transmission line; This is a time slot setting means.

Next, the operation of the embodiment shown in FIGS. 1 and 2 will be explained.

When the terminal 100 makes a call, the call request is sent as a packet to the node 20 via the signal channel of the subscriber line 110.
Arrive within 0. The packet is separated into packets by the frame control means 201 in the node 200,
The packet is passed to the packet processing means 202.

The packet processing means 202 accepts the call request, and the time slot setting means 209 sets an information channel between the node and the node to which the subscriber exchange 300 is connected. Further, the node to which the subscriber exchange 300 is connected from this K sets up an information channel and a signal channel with the subscriber exchange 300 in the same way as between a terminal and a node.

Further, the inter-node signal channel is set by utilizing the fact that the packet communication control means 203 provides a packet transmission function on the loop transmission path.

The information channel and the signal channel are multiplexed onto the loop transmission line 210 by the multiplexing means 204, and the loop control means 205 accesses the loop transmission line.

As described above, when a terminal makes a call, an information channel and a signal channel are set up between the terminal and the local exchange, control packets from the terminal are transmitted to the local exchange via the signal channel, and the local exchange You can receive various exchange services. In addition, the subscriber exchange sets up an information channel and a signal channel between the subscriber exchange and the terminating terminal on the terminating terminal side by performing the reverse procedure to the above, and as a result, the originating terminal and the terminating terminal are connected to each other. This has the effect that an information channel and a signaling channel are provided to the terminal each time a call is made.

Effects of the Invention As is clear from the embodiments described above, the present invention makes effective use of tie time slots within a LAN by setting an information channel and a signal channel within the LAN in response to a call request from a terminal. It has the effect of being able to.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a communication network configuration in an embodiment of the present invention, and FIG. 2 shows a communication network 210...loop transmission line, 220... subscriber line, 230... making up the communication network of the present invention. ...LA
N, 300...Local exchange, 201...Frame control means, 202...Packet processing means, 203...
- Packet communication control means, 204... multiplexing means, 2
05...Loop control means.

Claims (1)

[Claims] Frame control means that has an interface with an ISDN terminal, separates or multiplexes an information channel and a signal channel on a transmission frame, and transmits and receives the transmission frame;
It connects to the signal channel of the frame control means, extracts and generates signal channel packets, and when it detects a call setup or line disconnection request packet from a terminal, activates the time slot setting means and packet processing means for setting or releasing an information channel; time slot setting means for setting the information channel from the frame control means to a time slot on the transmission path; a packet communication control means having a control function of transmitting and receiving data, an information channel from the frame control means, and a signal channel from the packet communication control means, and multiplexes the signal from the network into an information channel and a signal channel. In response to a call setting request from a terminal, the time slot setting means performs communication between the node accommodating the terminal and the node accommodating the subscriber exchange, in response to a call setting request from the terminal. A communication network configuration method that sets up a transmission path between the two.