RU2245001C1 - Head-end station of system for radio communications with mobile objects - Google Patents

Abstract

FIELD: radio communications engineering; digital communications in computer-aided ground-to-air data exchange systems.

SUBSTANCE: proposed system designed to transfer information about all received messages irrespective of their priority from mobile objects to information user has newly introduced message processing unit, group of m modems, (m + 1) and (m + 2) modems, address switching unit, reception disabling unit whose input functions as high-frequency input of station and output is connected to receiver input; control input of reception disabling unit is connected to output of TRANSMIT signal shaping unit; first input/output of message processing unit is connected through series-connected (m + 2) and (m + 1) modems and address switching unit to output of control unit; output of address switching unit is connected to input of transmission signal storage unit; t outputs of message processing unit function through t respective modems as low-frequency outputs of station; initialization of priority setting and control units, message processing unit clock generator, and system loading counter is effected by transferring CLEAR signal to respective inputs.

EFFECT: enhanced efficiency due to enhanced throughput capacity of system.

1 cl, 2 dwg

Description

The invention relates to techniques for radio communications and can be used to organize digital communications in automated air-ground data exchange systems.

A known radio communication system with moving objects, comprising a receiver, a demodulator, a message decoder, a buffer register of addresses of moving objects, a first AND element, a message priority decoder, a block of priority message timers, a block of priority message registers, a message distribution switchboard, a number counter moving objects, system load counter, free access clock generator, time window shaper, address clock clock generator millet, delay line, second AND element, free access key, data output unit as an information source, address interrogation key, buffer storage unit, number of overspeeds, reset pulse generator, data recording unit, modulator and transmitter, ground communication modem, location sensor , data format converter, control panel of the ground transceiver station [1].

The disadvantages of this system include the lack of the ability to perform the functions of a central radio communication station with mobile objects (software) in terms of monitoring the entire communication network.

Closest to the claimed object is the central station of a radio communication system with moving objects, containing a series-connected receiver, demodulator and address decoder unit, as well as a transmitter, a pulse generator, n timers, a system load counter, a priority setting unit, a priority message count counter, connected in series shaper of the transmission enable signal, transmission signal storage unit, data recording unit, data output unit, n AND elements, n pulse counters, n keys, blocks control, the first n, n second pulse shaping, a third, a fourth pulse shapers, first, second, third, fourth OR elements, storage unit, wherein n number of messages being processed with moving objects [2].

The disadvantages of the prototype include:

- not routing messages over the air and ground networks;

- no dynamically changing address database of moving objects and information recipients is maintained for routing purposes;

- message formats are not converted in accordance with the particular requirements of the information and logical pairing of information recipients;

- charging is not provided, as well as the control and management of remote ground-based radio communication stations;

- there is no real-time representation of the air situation for all radio communication zones in which network monitoring is provided;

- the function of sending message delivery notifications is not supported;

- there is no archiving of messages passing through the service provider and queues taking into account the category of urgency.

The main task to be solved by the claimed invention is aimed at expanding the functionality of the central station of a radio communication system with mobile objects in terms of monitoring the network of all radio communication zones in a given area of airspace, namely: routing messages over air and ground networks; maintaining archives of messages passing through the central station and queues taking into account the category of urgency; monitoring the current state of the communication network; accounting of message schedules and subscriber connections; providing automatic search for a moving object to deliver messages to it.

The specified technical result is achieved by the fact that in the central station of a radio communication system with moving objects, containing a series-connected receiver, demodulator and block of address decoders, as well as a transmitter, a pulse generator, n timers, a system load counter, a priority setting unit, a priority message count counter, serially connected driver of a signal for switching on a transmission, a storage unit for a transmission signal, a data recording unit, a data output unit, n AND elements, n pulse counters, n key th, control unit, n first, n second pulse formers, third, fourth pulse formers, first, second, third, fourth elements OR, where n is the number of processed messages from moving objects, and the signal output of the address decoder block is connected to the key inputs, outputs which, through the fourth element, OR are connected to the signal input of the control unit, the comparison inputs of the address decoder unit are connected to the priority setting input, pulse counter inputs and “Reset” inputs of n delay lines whose outputs through appropriate timers they are connected to the first inputs of the corresponding AND elements, the outputs of which are connected to the delay inputs of the respective pulse counters, the outputs of which through the corresponding second pulse shapers are connected to the inputs of the second OR element, the output of which is connected to the “Reset” input of the moving objects counter, the recording input of which connected to the output of the first OR element, the inputs of which, through the corresponding first pulse shaper, are connected to the comparison output of the address decoder unit, the output of the pulse generator is connected to the second inputs of n AND elements, the output of the counter of movable objects is connected through the third OR element to the input of the system load counter, the output of which is connected to the control input of the priority setting unit and the second input of the control unit, the first output of which is connected to the pulse generator the second of the third OR element, the third input of which is connected to the output of the fourth pulse shaper, the input of which is connected to the output of the transmitter enable block for transmission, the outputs of the block and priority assignments are connected to the control inputs of the first keys, a message processing unit (BOS), a group of m modems, a (m + 1) th and (m + 2) th modems, an address switching block, a reception blocking input whose input is the high-frequency input of the station, and the output is connected to the input of the receiver, the control input of the reception blocking unit is connected to the output of the signal transmission unit “Transmission Enable”, the first input-output of the biofeedback through the (m + 2) -th and (m + 1) - th modems, the address switching unit is connected to the output of the control unit, output d of the address switching unit is connected to the input of the transmission signal storage unit, m biofeedback outputs through m of the corresponding modems are the low-frequency outputs of the station, the initial setting of priority setting and control units, the biofeedback clock generator, the system load counter is performed by applying a “Reset” signal to the corresponding inputs at the same time, in the message processing unit, the format conversion unit is connected by two-way communications with the (m + 2) -m modem, router, address base storage unit, tariff unit the unit, the message storage unit, the display unit, the control panel, the clock generator is connected to the sync inputs by the format conversion unit, the router, the address base storage unit, the charging unit, the message storage unit, the display unit, the control panel, the address base storage unit is connected by two-way communication with router and charging unit, m router inputs / outputs are connected to the corresponding m modems.

Figure 1 shows the structural diagram of the central station of a radio communication system with moving objects, figure 2 is a structural diagram of a message processing unit.

The central station of a radio communication system with moving objects contains a receiver 1, a demodulator 2, and an address decoder unit 3, a priority setting unit 4, n timers 5, the first n delay lines 6, n AND elements 7, n 8 pulse counters, a 9 pulse generator, n first 10 and n second 11 pulse shapers, first 12 and second 13 element OR, counter 14 for the number of moving objects, third element OR 15, counter 16 for system loading, first n keys 17, fourth element OR 18, third pulse shaper 19, block 20 controls, re Occupancy 21, the counter number of priority messages, connected in series forming unit 22 transmit enable signal, the transmission signal storage unit 23, a fourth pulse generator 24, the elements 25, coincidence unit 26 addresses the biasing registr27. The control unit 20 contains the second delay lines 28, the second keys 29, the fourth drivers 30, the counter 31 of the number of priority messages, the third key 32, the storage unit 33, k of the decoders 34 message types, the message processing unit 35 (BOC), a group of m modems 36 , (m + 1) -th 37 and (m + 2) -th 38 modems, address switching unit 39, reception blocking block 40, the input of which is a high-frequency input of the station, and the output is connected to receiver input 1, the control input of blocking block 40 the reception is connected to the output of the block 22 of the formation of the signal "Transmission", first The BOS 35th input-output 35 through the (m + 2) 38th and (m + 1) 37th modems connected in series, the address switching unit 39 is connected to the output of the control unit 20, the output of the address switching unit 39 is connected to the input of the storage unit 23 transmission signals, m outputs of BOS 35 through m of the corresponding modems 36 are the low-frequency outputs of the station, the initial installation of priority setting blocks 4 and control 20, the clock generator 48, the BF 35, the system load counter 16 is carried out by applying a “Reset” signal to the corresponding inputs, m - total number of interfaced radio stations in the zone and the recipients of information in the biofeedback, the format conversion unit 41 is connected by two-way communications with the (m + 2) -m modem 38, router 42, address base storage unit 43, charging unit 44, message storage unit 45, display unit 46 , with the control panel 47, the clock generator 48 is connected to the clock inputs of the format conversion unit 41, the router 42, the address base storage unit 43, the charging unit 44, the message storage unit 45, the display unit 46, the control panel 47, the storage unit 44 the address base is connected by two-way communications with the router 42 and the charging unit 44, m inputs / outputs of the router 42 are connected to the corresponding m modems 36.

The central station of a radio communication system with mobile objects operates as follows. The messages generated on the moving object sequentially in time arrive at the receiver 1, are processed in the demodulator 2, and in the form of a sequence of pulses are fed to the address decoder 3. Then the digital sequence moves along the shift register 27. Phasing of the counter 8 _i , i = 1, ..., n is carried out by pulses from the output of the corresponding matching circuit 25. When the incoming address and the address stored in the address block 26 match, the corresponding matching circuit 25 is triggered. The signal from its output through the first pulse shaper 10, the first element OR 12, increases the previously recorded value by one in the counter 14 of the number of moving objects. At the same time, the signal from the output of the matching circuit 25 resets the counter 8 and starts the timer 5 through the first delay line 6, which is activated and opens for a while the corresponding element And 7, through which the counting pulses from the pulse generator 9 begin to arrive at the counter 8. If during time τ the i-th matching circuit 25 does not work, i.e. the mobile object did not communicate (left the stable radio communication zone), then the counter 9 will be filled and the pulse generated at its output through the second pulse shaper 11, the second element OR 13 is fed to the subtracting input of the counter 14 of the moving objects. If during the time τ the i-th matching circuit 25 again works, then the pulse from the output of this matching circuit will reset the counter 8 _i and again through the delay element 6 starts the timer for the time τ. If the addresses do not match with the specified dispatcher or when messages from several software are superimposed, there are no signals at the output of matching circuits 25. At the same time, the signal from the output of the matching circuit 25 is fed to the input of the priority setting unit 4, which has several operating modes and changes the polling modes of the keys 17 depending on the signal at the control input of the priority setting unit 4. The system load counter 16 is used to estimate the number of processed messages for a given time interval. Data on the number of received messages is displayed on the data display unit 46 in the message processing unit 35. The output of the system load counter 16 is connected to the inputs of the priority setting unit 4 and the control unit 20. The “Reset” command is sent to the priority setting block 4, the system load counter 16, the biofeedback clock generator 48 and the control unit 20 only at the beginning of work for setting the registers and counters of the corresponding blocks to “Zero”.

Messages in the form of a sequence of pulses are received at the signal input of the control unit 20, made in a structure similar to that in the prototype, to the second n-delay lines 28 and to k message type decoders 34. The type of message carries information about its purpose, for example, for aircraft: alarms, messages of automatic dependent monitoring, data exchange “pilot-dispatcher”. In general, there can be k message types that are prioritized. Signs of the types of messages from the outputs of the fourth formers 30 ₁ -30 _k are received at the input of the transmission signal storage unit 23, where a corresponding message is generated for transmitting data to the mobile unit. If a response word is not required for the message, then messages 21 can be formed for the transmitter 21, the packages of which are necessary to indicate the type (number) of the central station of the radio communication system with ground objects, for example squatter packages for civilian aircraft. When a message of the highest priority is received, a message type decoder 34 _{1 is} triggered and, through the corresponding pulse generator 30 _1, opens a key 29 ₁ through which information is entered into the storage unit 33, while the contents of the reverse counter 31 of the number of priority messages are increased by one. Less urgent messages (with priority from 2 to k) after passing sequentially in time, as they are formed for transmission from a moving object, are processed similarly to the blocks 28 and 29 discussed above. Until priority messages are transmitted from the storage unit 33, to the output of the counter 31 of the number of priority messages has a high level that allows 32 “read” pulses to pass through the third key. After the transmission of each priority message of pulses to the subtracting input of the counter 31 priority messages, a pulse is returned that returns it to its original state. From the output of the message control unit 20 through the address switching unit 39, the (m + 2) -th 38 and (m + 1) -th 37 modems enter the BOS 35 to the format conversion unit 41. If the distance between block 20 and BOS 35 does not exceed the values specified in the requirements for the interface used, then modems 37 and 38 may be absent. In block 41 of the format conversion, the received messages are converted to the format necessary for the operation of all nodes of the BF 35. At the same time, the message addresses are compared with the data of the address base storage unit 43. According to the results of the comparison, a decision is made on the message schedule set by the router 42, the amount of payment for services in the charging unit 44, recording the message in the message storage unit 45 and, if necessary, displaying it on the display unit 46 and generating a response signal. This ensures the automatic search for a moving object for delivery of messages to it and receipt of receipts for its delivery. In block 45 storing messages provides maintaining archives of messages taking into account the category of urgency. For this, there is operational (for the period of “aging” information) and long-term (for example, 30 days) memory. RAM data is constantly updated. Long-term memory data is needed to analyze conflict situations and evaluate the accuracy of calculations with information recipients. Accounting for message traffic and subscriber connections, calculation of the amount for payment for services is carried out in block 45 tariffication depending on the address and volume of the message. The bill to the recipient of information is issued for a given time interval, for example, a day according to the schedule determined by the address base storage unit 43 and the router 42. The address base storage unit 43 contains the addresses and types of all messages processed at the central station, as well as the addresses of the software being paired peripheral stations of a radio communication system with mobile objects and information recipients. Router 42 provides routing of messages over the air and ground communication networks, namely, connecting to a central station via modems 36 peripheral stations of a radio communication system with mobile objects and information recipients, for example, airline services and air traffic control. Synchronization of all message processing processes in BOS 35 is carried out using a clock pulse generator 48. Data is requested from the software from the control panel 47 of the central station or using a control command transmitted through the corresponding modem 36, router 42, format conversion unit 41, connected in series ( m + 2) th 38 and (m + 1) th 37 modems, address switching unit 39 to the transmission signal storage unit 23. The last operation is carried out, for example, when requesting data from software on the basis of the “last connection”. The address switching unit 39 is intended for distributing messages circulating between the control unit 20 and the BOC 35 at the address (type) of the message. Messages from the software and receipts of their correct reception are sent to the storage unit of the control unit 20, and messages for the software to the storage unit 23 of the transmission signal for broadcasting them. Similar operations to the above can be carried out in peripheral stations of a radio communication system with mobile objects. Monitoring the current state of the communication network is carried out in block 41 format conversion on receipts received from the respective modems 36 in the form of a confirmation message received from the central station. The structure of the received receipt is compared with one of the addresses stored in the address base storage unit 43, and after the compliance analysis, a decision is made on the operability of the remote object. The central station of a radio communication system with mobile objects integrates remote mating peripheral stations of a radio communication system with mobile objects and information recipients into a single network and ensures delivery of messages from software to recipients, for example, for civil aviation (GA), there may be GA services, automated workers places of air traffic controllers and airline computers. The incoming data from the software through the control unit 20 is automatically processed and transmitted to the recipients, which may be, for example, air traffic control centers, airlines, various GA services and other objects. Data traffic, interacting software, the status of remote peripheral stations and communication channels is reflected on block 46 in real time. The graphical interface provides detailed information, and also gives the operator the opportunity to start testing a remote recipient of information, carry out the necessary operations to establish or disable a communication channel, and display statistical data. The message storage unit 45 has redundant storage devices and also prints data on an external printer.

Blocks 1-34 in purpose and structure are the same with the prototype. They can be implemented on known serial elements and components. The introduced blocks 35-48 can be implemented on known microcircuits and serial nodes. The functions of blocks 3-20 and 23-35, 39-48 can be performed programmatically using a computer.

The advantages of the claimed device include:

- ensuring routing of messages over the air and ground networks within the territory of the Russian Federation using a dynamically changing address database of mobile objects and information recipients;

- billing is automatically carried out by software methods, as well as monitoring and control of remote ground-based radio communication stations;

- the use of messages of automatic dependent monitoring allows real-time representation of the air situation for all radio communication zones, which provide network monitoring and support for the transmission of message delivery notifications;

- the introduced nodes allow maintaining archives of messages passing through the central station of the radio communication system with mobile objects, and queues taking into account the category of urgency.

Thus, the proposed central station of a radio communication system with moving objects will allow collecting information about existing connections of the air-ground subnet in radio communication zones in which the network is monitored to:

- monitoring the current state of the communication network;

- accounting for message traffic;

- accounting for traffic connections of subscribers;

- ensuring automatic search of the aircraft for delivery of messages to it.

Literature

1. RF patent No. 2195774, M. cl. H 04, 7/26, 2002.

2. A / S No. 2050695, M. cl. H 04 B 7/26, 1995 (prototype).

Claims (1)

The central station of a radio communication system with moving objects, containing a series-connected receiver, demodulator and block of address decoders, as well as a transmitter, a pulse generator, n timers, a system load counter, a priority setting unit, a priority message counter, a serial transmission signal shaper, a block transmission signal storage, data recording unit, data output unit, n AND elements, n pulse counters, n keys, control unit, n first, n second impulse generators pulses, third, fourth pulse formers, first, second, third, fourth OR elements, where n is the number of processed messages from moving objects, and the signal output of the address decoder block is connected to the key inputs, the outputs of which are connected to the signal input of the block through the fourth OR element control inputs, comparison inputs of the address decoder block are connected to the input of the priority setting block, pulse counter inputs and “Reset” inputs of n delay lines, the outputs of which are connected through the corresponding timers to the first by the inputs of the corresponding AND elements, the outputs of which are connected to the delay inputs of the respective pulse counters, the outputs of which through the corresponding second pulse shapers are connected to the inputs of the second OR element, the output of which is connected to the “Reset” input of the movable objects counter, the recording input of which is connected to the output of the first element OR, the inputs of which through the corresponding first pulse shaper are connected to the comparison output of the address decoder unit, the output of the pulse generator is connected to the second by the moves of n AND elements, the output of the moving objects counter is connected through the third OR element to the input of the system load counter, the output of which is connected to the control input of the priority setting unit and the second input of the control unit, whose first output is connected to the second input of the third OR element through the third pulse shaper, the third input of which is connected to the output of the fourth pulse shaper, the input of which is connected to the output of the transmitter switching unit, the outputs of the priority setting unit are connected to the inputs and control of the first keys, characterized in that a message processing unit (BOS), a group of m modems, a (m + 1) th and (m + 2) th modems, an address switching block, a reception blocking block, an input are introduced into it which is the high-frequency input of the station, and the output is connected to the input of the receiver, the control input of the reception blocking unit is connected to the output of the signal transmission unit “Transmission Enable”, the first input-output of the biofeedback through the (m + 2) -th and (m + 1) connected in series modems, the address switching unit is connected to the output of the control unit, the output of the address block switching is connected to the input of the transmission signal storage unit, m biofeedback outputs through m corresponding modems are the low-frequency outputs of the station, the initial installation of priority setting and control blocks, the biofeedback clock generator, the system load counter is performed by applying the “Reset” signal to the corresponding inputs, message processing unit, the format conversion unit is connected by two-way communications with the (m + 2) -m modem, router, address base storage unit, charging unit, storage unit messages, display unit, control panel, the clock generator is connected to the sync inputs of the format conversion unit, router, address base storage unit, charging unit, message storage unit, display unit, control panel, address base storage unit is connected by two-way communication with the router and the charging unit , m I / O of the router are connected to the corresponding m modems.

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