JPH03258143A - Digital communication system - Google Patents

Abstract

PURPOSE:To attain simultaneous communication of cell and container information by allowing a sender side to give form information (SI) representing whether pay load(PL) storage information is a cell or a container to a call control signal, distributing the PL to an exchange means in response to the SI, adding the SI to the PL at transmission and allowing a receiver side to recognize the result and to display it. CONSTITUTION:Transmission information from a user 1 to a user 2 is stored in a pay load(PL) of a transmission frame by an information multiplex means 10 and an information form identification means SE30 gives form information (SI) to a digital transmission means 20 via a call control signal according an accommodation form display signal 50. The SI is received by a digital transmission means 21, the SE31 recognizes the SI, outputs an identification signal 70 to a control means 80 and an information multiplex means 11 extracts the PL from the received frame. The control means 80 controls a distribution means 40 to distribute the cell information to an ATM exchange means 110 and the container information to an STM exchange means 210 according to a signal 70 and a distribution means 41 outputs signals 90, 91 to select the information to be connected to the user 2. Thus, the cell and container information is sent simultaneously by a single transmission system.

Description

[Detailed description of the invention] [Industrial application field] INDUSTRIAL APPLICATION This invention is utilized for a high-speed, broadband digital communication system.

In particular, the present invention relates to a hybrid communication system that can simultaneously provide ATM exchange and STM exchange via a single digital transmission system and the same call control signal.

〔overview〕

The present invention provides a means for identifying cell information and container information in a digital communication system in which cell information and container information are exchanged, thereby making it possible to communicate via a single digital transmission path and the same call control signal. It was made so that it could be done.

[Conventional technology]

In the conventional example, cell information and container information are connected to ATM switching means and STM switching means through different transmission paths using independent communication methods, and independent switching networks are established using independent call control signals. It was composed. FIG. 2 shows a conventional example of communicating information from user 1 to user 2, in which the transmission method and switching network are selected each time depending on the form of the information, and in the case of cells, cell transmission means 100 and ATM switching means 1
10 and container transmission means 200 in case of a container.
and the STM exchange means 210 were used independently.

[Problem to be solved by the invention]

In this way, in the conventional example, cell information and container information are communicated between users via independent communication methods and switching networks, so each user interface has separate communication devices for cell information and container information. It was necessary to prepare.

[Means to solve the problem]

The present invention provides an exchange means having a first exchange means for exchanging cells, which are fixed-length packetized digital information, and a second exchange means, for exchanging containers, which are digital information accommodated in a fixed-capacity high-speed channel. In a digital communication system in which a communication node sends and receives a frame consisting of an overhead containing a call control signal and a payload containing either a cell or a container via comprises a first information type identifying means for providing the call control signal with type information indicating whether the frame is a cell or a container; An identification distribution means that gives the payload included in this frame to either one of the second exchange means, and the form information included in the overhead given to the payload that has passed through the second exchange means, and the form included in the overhead given to this payload. The communication node on the receiving side is characterized by comprising a second information type identification means for matching the information, and a third information type identification means for recognizing and displaying the form information related to the incoming frame.

[Effect]

The transmitting communication node provides format information indicating whether the digital information stored in the payload is cell information or container information to the call control signal included in the overhead. The exchange means is an ATM depending on the form information related to the incoming frame.
distributing the payload to a means of exchange or an STM exchange;
At the time of transmission, format information related to the frame that arrived is added to the payload. The receiving communication node recognizes and displays the format information regarding the incoming frame.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

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

As shown in FIG. 1, this embodiment consists of an ATM switching means 110 which is a first switching means for exchanging cells which are fixed-length packetized digital information, and digital information accommodated in a fixed-capacity high-speed channel. An exchange means having an STM exchange means 210 which is a second exchange means for exchanging containers, and a payload containing either an overhead containing a call control signal and either a cell or a container via this exchange means. and users 1 and 2, which are communication nodes that send and receive frames consisting of
As a characteristic feature of the present invention, the user 1, which is a communication node on the transmitting side, uses an information type identification means 30 to provide the call control signal with type information indicating whether the digital information to be sent is a cell or a container. and the exchange means includes an information type identification means which is an identification distribution means for giving the payload included in the frame to either the first exchange means or the second exchange means according to the type information related to the incoming frame. 31 and distributing means 40, and an information form identifying means 32 for matching the form information included in the overhead given to the payload via the own means with the form information included in the overhead given to this payload. The node comprises information form identification means 33 for recognizing and displaying form information relating to incoming frames.

Next, the operation of this embodiment will be explained.

When information is communicated from user 1 to user 2, the information multiplexing means 10 accommodates the transmission information in the payload of the transmission frame, and the information format identification means 30 transmits the format information via the call control signal in accordance with the accommodation format display signal 50. It is applied to the digital transmission means 20. This information is received by the digital transmission means 21, and the information form identification means 31 recognizes the information form,
The identification signal 70 is output to the control means 80. The information multiplexing means 11 extracts the payload from the received frame, and the control means 80 causes the distribution means 40 to distribute cell information to the ATM exchange means 110 and container information to the STM exchange means 210 according to the identification signal 70, and also distributes the container information to the STM exchange means 210. distribution means 4
1 outputs as signals 90 and 91 which cause the user 2 to select the information to be connected, respectively.

According to such a procedure, the information exchanged by each exchange means is transmitted to the receiving and receiving users.

〔Effect of the invention〕

As described above, the present invention allows cell information and container information, which were originally communicated via transmission methods and switching networks with different attributes, to be simultaneously communicated using a single digital transmission method and the same call control signal. There is an effect that can be done.

[Brief explanation of drawings]

FIG. 1 is a block configuration diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a block configuration diagram showing the configuration of a conventional example. 1.2... User, 10.11.12.13... Information multiplexing means, 20.21.22.23... Digital transmission means, 30.3■, 32.33... Information format identification Means, 40.41...Distribution means, 50.51...Accommodation mode display signal, 70.71...Identification signal, 80...
Control means, 90.91... Signal, I (10... Cell transmission means, 110... ATM exchange means, 200...
Container transmission means, 210...STM exchange means.

Claims (1)

[Claims] 1. A first exchange means for exchanging cells, which are fixed-length packetized digital information, and a second exchange means, for exchanging containers, which are digital information accommodated in a fixed-capacity high-speed channel. In a digital communication system in which a communication node sends and receives a frame consisting of an overhead containing a call control signal and a payload containing either a cell or a container via an exchange means having a first information type identification means for providing the call control signal with type information indicating whether the digital information to be transmitted is a cell or a container; An identification distribution means that gives the payload included in this frame to either one of the first exchange means or the second exchange means, and an overhead that has been given to the payload and format information included in the overhead given to the payload that has passed through the first exchange means or the second exchange means. The communication node on the receiving side is characterized by comprising a second information type identification means for matching the form information contained in the incoming frame, and a third information form identification means for recognizing and displaying the form information related to the incoming frame. Digital communication method.