UA57543A - Method for connecting a satellite communication system subscriber terminal providing independent operation of several communication networks - Google Patents

Abstract

The proposed method for connecting a satellite communication system subscriber terminal, providing independent operation of several communication networks, consists in dividing the intermediate-frequency signal received by the terminal into several signals according to the number of the independent communication networks, transmitting the said signals to the said communication networks via additional hardware facilities, according to the addressing, and providing routing of the data flows for the purpose to communicate data via the terminal port designed for interface with the Ethernet Local Area Network.

Description

Description of the invention

The invention belongs to satellite communication systems in general, and more specifically, to satellite 2 communication systems, which use terminals with a very small aperture (UM5AT - Megu Ztai!| Aregiyge Teptipai!) that implement two-way wireless communication.

There are well-known satellite communication networks using terminals with a very small aperture (UZAT), the advantages of which include the use of antennas with a small diameter (less than 33.7 m), the relatively inexpensive cost of the equipment and ease of operation by the subscriber. 70 The widespread use in practice of subscriber terminals of satellite communications of the REBZ type (Reggopa! eapyp vziayop) for the development of multi-element large-scale information exchange networks with the help of IZVM (Ipiedgaiyei Zayiye Vyvzipezz Meimogk) and IR-Aimapiade technologies, developed and implemented by the Nidpez Meimogk Zuvieetv company, is well known (NM).

The architecture of the mentioned networks is star-shaped, communication between subscriber stations is supported through 12 central stations (CST) via satellite communication channels.

The necessary technical details related to the installation of subscriber terminals of the RE type, their management and support, both operator and technical, are covered in the technical documentation of the Nidpez Meyogk company

Zuvietv, which is provided for serially produced terminals |Z.

Currently, the most preferred type of subscriber terminal is the REBZ-5000 type station, which is a high-production set of equipment that provides bidirectional transmission of data, voice and broadcast video within the framework of networks of the REZ/ZVM architecture, providing an intermediate frequency (IF) signal for digital or an analog video receiver.

The station of the RE5Z-5000 type provides reception of video signals using the IR protocol, supports IR telephony (from 8Kbit/s), provides both high-quality speech reproduction and the ability to transmit fax messages.

In accordance with the manufacturers' recommendations for the operation of the REB-5000 type station for two-way communication networks, the E (Pegpei) port (standard solution) can be used for information exchange based on the IR protocol with connection at the station installation location to 254 user terminals (Fig. .1).

By installing an additional router as shown in Fig. 2, the number of user terminals can be increased. at

The transmission speed on the Ethernet interface is up to 46bOKbit/s in the receiving mode and up to 240OKbit/s in the transmission mode. The transmission speed on the local Ethernet network depends on the network equipment used.

The presence of 1 to 4 (depending on the configuration) K5-232 serial ports allows, as shown in Fig.

Fig. 3, connect various controllers, sensors, etc., which makes it possible for the central control station of the network to monitor the necessary parameters of the subscriber equipment of any of the remote stations. at

Either a user terminal or additional local networks of user terminals connected by a router as shown in Fig. 4 can be connected using the K5Z-232 serial port. In the latter case, the transmission speed will be limited by the number of routers in use. "

The main thing is the following: local networks connected to the port E (Pegpei) and to the serial port K5-232 Z 50 (port MUAM) are physically resolved, but are located in the same IP network. At the same time, in practice, the development of subscriber networks of satellite communication terminals arise

From" the situation when two or more independent corporate networks must function at one point of station location.

The task of the proposed invention is to invent a method of connecting a subscriber terminal of satellite communication in such a way that, in the presence of one remote station, several corporate networks can function independently. - and The task is solved by using the subscriber terminal of the satellite communication station, which has standard outputs of ESHPegpay, the K5Z-232 serial port (MUAM port) and IF video signal, and they carry out the distribution of paths and processes of reception and transmission, connecting the receiving devices to one "drive" 20 (receiving) port, and the transmission path is formed with the help of other ports. As a result, such a connection allows you to build subscriber networks that are not only physically disconnected, but also independent. c» The solution implementation scheme for the case of two subscribers is shown in Fig. 5.

In accordance with the scheme, signals are received from the output of the IF terminal (for example, PE5-5000) with the amplitude of each signal Ovu, which is fed through the IF signal divider to additional receiving equipment 29 (for example, Oiges ROS technologies). Amplitude of the signal at the input of each set of receiving equipment in. Ovkh n: Ovkh / M, where M is the number of sets, which corresponds to the number of independent networks to be formed, n is the number of the set.

The receiving equipment of each subscriber is configured with the help of a central station to receive information with strictly defined addressing, which excludes the possibility of information intended for 60 network of subscriber 1 entering the network of subscriber 2 and vice versa. The package structure is shown in Fig. 6:1 - header of the packet, 2 - body of the packet, Z - sign of the end of the packet. One of the options for packet addressing is that the serial number of the receiving equipment is written in the packet header (for example, UOiges RO technology equipment).

Received information in the form of IP packets is sent to the corporate network of subscriber 1 or 2 in accordance with the assigned addressing. because the use of Oiges ROS technology equipment allows to significantly increase the speed of information reception by one satellite communication station. For one subscriber, the ETR connection speed increases to 2.5 Mbit/s.

When several subscribers are connected at the same time, the speed is distributed in proportion to the number of subscribers.

In the transmission mode, information from the network of subscriber 1 in the form of IP packets is transmitted directly through the EIPegpay interface to the station terminal of the PE5 type. Information from the network of subscriber 2 is transmitted to the router, where the packets are encapsulated in PPP channel layer protocol packets and sent further to the satellite communication station through port K5-232 (UUAM port), and then converted into microwave channel protocol packets. The router is configured to transmit packets with strictly specified addresses.

Further, with the help of transmitting microwave equipment, through the on-board repeater of the communication satellite and the 7/0 Central control station, the information is transmitted to the control centers of subscriber networks 1 or 2 in accordance with the addresses by means of the routing equipment of the central station.

An embodiment of the invention was described above using the example of two subscribers. The number of formed independent corporate networks can be increased. At the same time, in one variant, all transmission paths through the router are fed to the E(Shegpei port and in the second - through the router to the K5-232(MUAM) port. 7/5 It is possible to implement the variant in which one part of the networks is connected to the E(Pegpei port, and the second - to the port

K5-232 (MUAM).

The invention can also be used in existing satellite communication stations to increase the number of independently functioning subscribers, each of which has its own network.

Sources of information: 1. "Systems and stations of satellite communication type M5AT. Reference manual", 1994-1997, Moscow, 1997. 2. "Systems and stations of fixed satellite communication. Reference manual", 1994-1997, Moscow, 1997.

Z. Ipveiaiyayop apa Zeglise Mapia! yog Regwop! Eagpyyp iiayop. Sepega! Kegiegepse (Ipsishadipd RE todei

HO zegieev), Nydpez Meimogk Buvietv, OBA, 1998. 4. Reggopai eagiy viayop 5000tm ()vege Scide, Nydnez Meimogk Zuvietv, OBA, Bositepi Mo1028890-0001 Kem. AND,

Mau, 2000.

Claims (4)

Formula of the invention 1. The method of connecting a satellite communication subscriber terminal to ensure the independent functioning of several corporate networks, which differs in that the output signal of an intermediate frequency received by the terminal is divided by the number of independent two-way communication networks and in accordance with the addressing provided by the central station, they are sent through additional receiving equipment (for example, URigesi RS technologies) to the local networks of each of the independent two-way communication networks, and - the transmission paths are connected through a router to the EIPegpei port of the terminal. yu 2. The method according to claim 1, which differs in that the transmission paths of independent networks are connected through the router to serial ports K5-232 of the terminal. Q. The method according to claim 71, which differs in that the transmission paths of some networks are sent through the router to the port E(Pegpei of the terminal, and the transmission paths of other networks are sent through the router to the serial port K5-232 of the terminal. -o s 4. The method according to claims 1, 2, C, which differs in that any identifier belonging to a defined independent corporate network is used for addressing. ;" 1 - I 1 iz 50 syu» R 60 b5