UA44932C2 - INTERACTIVE MICROWAVE DATA TRANSMISSION SYSTEM - Google Patents

Abstract

The present invention relates to the special microwave communications. According to the invention, into a microwave integrated TV-and-radio information system (MITRIS), a radio access network is included, which corresponds to the IS-95 (CDMA) standard and consists of a switching device connected to the base stations, subscriber radio terminals with integrated modems, and a subscriber personal computer, which is used for receiving information that enters the modem of the subscriber receiving station, and for transmitting information to the modem of the subscriber radio terminal. The system for receiving, forming and processing information concerning access inquiries is connected to the modem of the same subscriber radio terminal. The proposed invention provides fast interactive access to the Internet network independently of the subscriber location, with a possibility for a subscriber to move within a service area of the MITRIS system and the radio access network, and to connect with subscribers of the public telephone network.

Description

Description of the invention

The invention relates to a special microwave communication technique that provides data transmission from 2 central stations of the system to subscribers and vice versa.

Currently, the following systems of access to the Internet - resources are known (see Naryitnyk T.N., Babak V.P.,

Ilchenko M. E., Kravchuk S. A. Microwave technologies in telecommunication systems // Kyiv: Technika, 2000. P. 131 - 179): on telephone lines; then on cable television lines; via satellite channels; via a wireless network in the 2.45 GHz range; on microwave integrated television and radio information networks;

Each of the above systems, along with its advantages, also has a number of disadvantages, such as the direct access system

The Internet using satellite channels ensures high-speed reception of information by the subscriber from the satellite on requests transmitted by the public telephone network (PTN). However, the cost of the equipment required by the subscriber is high, for the transfer of requests, it is necessary to involve the TMZK. Similarly, to receive information from a cable network, you must be a subscriber of this cable network. In rural areas, this is practically impossible. The wireless access system in accordance with the 802.11 standard provides the subscriber with access to the Internet at a speed of up to b4acbit/s, but in the 2.45 MHz frequency range allocated for it, due to its wide use by industrial, medical and household devices, there is a serious problem of channel immunity.

The closest technical solution to the proposed one is the MITRIS microwave integrated television and radio information system chosen as a prototype (see T.N. Nartnyk, V.P. Babak, M.E. Ilchenko, M.E. Kravchuk

S. A. Microwave technologies in telecommunication systems // Kyiv: Technika, 2000Og. C 167 - 175). This system includes a subsystem for receiving, forming and processing information, a central transmitting station, and subscriber receiving stations. It allows the subscriber to transmit both TV and radio programs, as well as others. information, including the Internet, with speeds up to several tens of Mbit/s. In order to use this system to transmit subscriber requests in the reverse direction, you can use either a public telephone network or a radio channel. In the second case, subscribers are installed with transceivers and cable modems with a return channel. There are obvious disadvantages of this reverse channel organization scheme. TMZK has a low quality and allows information to be transmitted at a low speed. In F rural areas, there is a clear lack of numbering capacity and infrastructure of TMZK to cover all "I" who wish to use data transmission services. Subscriber equipment for a radio channel in the microwave range is expensive and not available to everyone, and the radio resource is limited, which does not allow to organize data transmission in a reverse channel at high speed.

The lack of feedback from the subscriber-consumer to the central station is the main drawback of the prototype system (the MITRIS system). The task of the proposed technical solution is to ensure high-speed interactive subscriber access to the Internet at any service point of the radio access network and the MITRIS system. The set task is achieved by adding a radio access network operating in mode of the international standard IZ-95 (SOMA) and consists of a switch connected to base stations, subscriber radio terminals with built-in modems, a subscriber's personal computer, 1" 15 simultaneously involved for receiving information to the modem of the subscriber's receiving station, for transmitting information - to modem of the subscriber radio terminal, and the subsystem of receiving, forming and processing information for receiving requests is connected to the modem of the same radio terminal. c The proposed technical solution is an interactive microwave data transmission system developed by the authors, consisting of a subsystem for receiving, forming and processing information connected to the (95) 50 Internet network, central and subscriber receiving stations, radio access network operating in the mode "from the international standard I5Z-95 (SOMA) and consists of a switch connected to base stations, subscriber radio terminals with built-in modems, the subscriber's personal computer, which is simultaneously connected to receive information to the modem of the subscriber receiving station, to transmit information to the modem of the subscriber radio terminal, and the subsystem reception, formation and processing of information for receiving requests is connected to the modem of the same radio terminal.

GF) Distinctive features of the proposed interactive microwave data transmission system include 7 additionally introduced radio access network operating in the mode of the international standard IZ-95 (SOMA), which allows, unlike the prototype, to transmit data from the subscriber to the central station.

In fig. the structural diagram of the proposed interactive microwave data transmission system is shown. 60 The system includes two main elements: the microwave integrated television and radio information system "MITRIS" (prototype system) 1 and the radio access network 2, operating in the mode of the international standard I5Z-95 (SOMA).

The "MITRIS" system 1, in turn, consists of a subsystem for receiving, forming and processing information 3 connected to the Internet 4, a central transmitting station 5 with an antenna 6 and subscriber receiving stations 7 with a subscriber station modem 8. The radio access network 2 consists from the personal computer of the subscriber 9 simultaneously connected to the modem 8 of the subscriber receiving station 7 and to the modem 170 of the subscriber radio terminal 11, the switch 12, connected to the base stations 13 and to the public telephone network (PTN) 14.

The proposed interactive microwave system works as follows.

The subscriber uses a personal computer 9 to form a request for the information he needs. This request is sent through the modem 10 of the radio terminal 11 to the nearest base station 13 of the radio access network 2 and then to the switch 12. From the switch 12, the request is transmitted to the base station 13 closest to the central station MITRIS 5 and from it to the radio terminal 11 connected to the receiving subsystem , formation and processing of information 3. From the subsystem C, the request is sent to the Internet 4. In the reverse direction, information from the Internet 4 /o enters the subsystem of reception, formation and processing of information 3, where it is addressed and through the central station 5, which transmits, is transmitted to the receiving subscriber station 7. Through the modem 8, the information is sent to the personal computer of the subscriber 9.

The proposed interactive microwave data transmission system compared to the prototype has a number of advantages: it provides high-speed interactive access to the Internet for the subscriber; allows the subscriber not to be tied to a specific place, but to move in the service area of the system

MITRIS and radio access systems; if necessary, allows the subscriber to contact subscribers of the public telephone network; provides a high-speed information request channel, because currently the IZ-95 radio access network (SOMA) can transmit data at a speed of up to 5 kbps, in the near future (2001 - 2002) the transmission speed will be increased to 2 Mbit/s. allows in small settlements (regional centers with a population of 200 - 300 thousand) to use only one base station, deploying it together with the MITRIS central station due to the fact that the radius of the service area of the radio access base station and the MITRIS system approximately coincides. 6)

Claims (1)

The formula of the invention is an interactive microwave data transmission system, which consists of a subsystem for receiving, forming and processing information connected to the Internet, a central transmitting one, and subscriber receiving stations, which is distinguished by the fact that the system contains a radio access network operating in the mode international standard IZ-95 (SOMA) and consists of a switch connected to base stations, subscriber radio terminals with built-in modems, the subscriber's personal computer, which is simultaneously engaged for receiving information to the modem of the subscriber receiving station and for transmitting information to the modem of the subscriber radio terminal , and the subsystem for receiving, forming and processing information for receiving requests is connected to the modem of the same radio terminal. - . and? sh» sh» se) (95) Ko) ime) 60 b5