RU2229197C1 - Method for message exchange in digital ultrahigh-frequency data- burst transfer radio communication networks - Google Patents

Abstract

FIELD: communications engineering. SUBSTANCE: proposed method is intended for use in computer-based digital ultrahigh-frequency radio communication networks operating under conditions of destabilizing factors. Prior to message exchange between two intercommunicating parties multicast data stream is transferred from repeater and is received at each subscriber station wherein vacant time channel corresponding to multiple access radio link of repeater is separated. Address and data parts of home data bursts are separated at repeater and stored till home data bust arrives at address of one of parties. After that code burst and then multicast data stream are produced; each time channel of the latter incorporates integrated code burst of intercommunicating subscriber stations. EFFECT: enhanced throughput of radio communication network. 1 cl, 9 dwg

Description

The invention relates to radio communication networks, and more specifically to digital radio networks of decameter range with packet information transmission. The method can be used in automated digital radio networks of decameter range with packet data transmission, operating in conditions of complex signal and noise conditions and other destabilizing factors.

A known method of messaging in radio systems, implemented in the system by ed. St. USSR No. 1474860, class H 04 B 7/26, 1989. The method consists in the fact that subscribers carry out information exchange through the base station on dedicated working channels from a common frequency resource.

The disadvantage of this method of mobile radio communication is the low bandwidth. This is because the division of the total frequency resource into separate channels is carried out by frequency, and the total number of channels formed in this way, and therefore the number of subscribers who can simultaneously exchange information in the system, is limited by the width of the allowed frequency spectrum.

There is also a known method of transmitting and receiving information with code compression of signals (ed. St. RF 2014738, class H 04 J 11/00, 1994), in which two subscribers carry out information exchange through the base station in duplex mode.

When applying the known method of transmitting and receiving information with code compression of signals for exchanging information between two mobile subscribers, the efficiency of using bandwidth is higher than in the known radio communication system, since the total time-frequency resource of bandwidth is divided into channels by codes and the total number of generated at the same time, the communication channels, and therefore the number of subscribers who can simultaneously exchange information, are greater than in the previously considered system.

A disadvantage of the known method of transmitting and receiving information with code compression of signals is the relatively low bandwidth, since four communication channels are simultaneously used to provide information exchange between two mobile subscribers.

Closest in technical essence to the claimed one is the method of messaging in digital mobile radio networks with packet information transfer according to the patent of the Russian Federation No. 2185027, IPC 7 N 04 B 7/26, published on 02.22.2001, bull. No. 19 dated 10.07.2002. With this method, at each subscriber station included in the digital radio communications network, their own information packets are formed, including address and information parts. Memorize the informational parts of their own information packets at each subscriber station and transmit their own information packets to the relay. The repeater receives its own information packets, identifies them, and then selects the address and information parts of their own information packets. A code packet and a single code packet are generated by concatenating the code packet and the address parts of its own information packets, transmit it, and after receiving a single code packet at the subscriber station, the address part and the code packet are extracted from it. Then, the information part of the own information packet is extracted from the code packet using the information part previously stored at this subscriber station, the previously stored information part of the own information packets is erased, after which the above steps are repeated.

The known prototype method partially eliminates the disadvantage of analogues relating to the low bandwidth of radio networks, due to the smaller number of simultaneously used communication channels between corresponding subscriber stations. This allows you to increase the total number of channels in comparison with the known methods of transmitting and receiving information with code compression of signals and, therefore, increase the number of subscribers who can simultaneously exchange information.

However, the disadvantage of the prototype method is the relatively low throughput due to inefficient use of the resource of the base station and formed communication channels. This is explained by the fact that for communication in digital radio communication networks with packet information between two subscriber stations, three communication channels are simultaneously used: one direct communication channel from the base station to two subscriber stations and two feedback channels from subscriber stations to the base.

The aim of the invention is to develop a method for messaging in digital radio networks of decameter band with packet information, providing increased throughput in automated digital radio networks of decameter band with packet information, by reducing the simultaneously used radio channels of interacting correspondents and increasing the bandwidth of the relay, performing the functions base station.

This goal is achieved by the fact that in the known method of messaging in digital radio networks of decameter range with packet information, which consists in the fact that at each subscriber station they form their own information packets, including address and information parts included in the digital radio communication network, store information parts of their own information packets at each subscriber station, transmit their own information packets, receive them on a relay, where they are identified, after which о allocate the address and information parts of their own information packets, form a code packet and a single code packet by concatenating the code packet and address parts of their own information packets, transmit it, and after receiving a single code packet at a subscriber station, the address part and code packet are extracted from it, then extract the information part of the own information package from the code packet, using the information part previously stored at this subscriber station, erase the previously stored information part part of their own information packets, after which the above steps are repeated, previously a group information stream is transmitted from the repeater, received at each subscriber station, where a free time channel corresponding to the frequency radio channel with multiple access to the relay is allocated from it. After allocation of the address and information parts of their own information packets on the repeater, they are stored for a time τ until they receive their own information packet to the address of one of the correspondents, and the code packet is formed by modulo summation of the two selected information parts of the own information packets of the interacting correspondents. Then, after the formation of a single code packet, a temporary group stream is formed, in each time channel of which a single code packet of interacting subscriber stations is presented.

Thanks to the new set of essential features, namely, when exchanging messages between two interacting correspondents, a group information stream is transmitted from the relay first, at each subscriber station it is received and a free time channel is allocated that corresponds to the frequency radio channel with multiple access to the relay, and the number is reduced simultaneously used radio channels between interacting correspondents. This follows from the fact that part of the information channels from the repeater to the subscriber station is freed up by converting the received own packets of information into a single code packet on the repeater and forming a group stream, in each time channel of which a single code packet of interacting subscriber stations is represented. This achieves an increase in the throughput of the repeater and, consequently, an increase in the throughput of the digital automated decametric radio communication network with packet information transmission.

The analysis of the prior art made it possible to establish that there are no analogues in the known sources of information characterized by a combination of features identical to all the features of the claimed technical solution, which indicates compliance of the claimed invention with the condition of patentability “novelty”. Search results for known solutions in this and related fields of technology in order to identify features that match the distinctive features of the claimed object from the prototype showed that they do not follow explicitly from the prior art. The prior art also did not reveal the popularity of the impact provided by the essential features of the claimed invention, the transformations on the achievement of the specified technical result. Therefore, the claimed invention meets the condition of patentability “inventive step”.

The claimed method is illustrated by drawings, on which are presented:

figure 1 is a functional diagram of a digital radio communication system decameter range with packet information when using a repeater that implements the claimed method;

figure 2 - structure of a group stream transmitted over a common channel from the repeater to the subscriber stations;

3-9 are diagrams explaining a principle for implementing a messaging method in digital decameter radio communication networks with packet information transmission.

The implementation of the inventive method of messaging in digital radio networks of decameter range with packet information is explained on the example of the radio system shown in figure 1.

The radio communication system is represented by repeater 1, which functions as a base station and two subscriber stations of interacting correspondents 2 ₁ and 2 ₂ , the first 2 ₁ of which is designated as correspondent A, the second 2 ₂ as correspondent B.

The repeater includes a gain and processing unit 1.1, a temporary combining unit 1.2, a radio transmitting device 1.3, a control unit 1.4, a storage unit 1.5, a channel condition analyzer 1.6, and a conversion unit 1.7.

The amplification and processing unit 1.1 is intended for amplification and pre-processing of signals from subscriber stations (AS) and consists of n paths for receiving and processing 1.1.11 ... 1.1.1 _n at a frequency f ₁ -f _n intended for demodulation of signals from correspondents with multi-station frequency access to the repeater.

The temporary association unit 1.2 is intended for the formation of a group information stream in which each temporary channel corresponds to a frequency radio channel with multi-station frequency access of the speakers to the repeater.

The radio transmitting device 1.3 is intended for transmission from the repeater of a group information stream over a common channel in the direction of the correspondents.

The control unit 1.4 provides the interaction of all relay units, identifies its own information packets received from the AU, selects the address and information parts of its own information packets received from correspondents, and forms a single code packet. The control device constantly maintains (forms) a list of addresses of correspondents interacting with each other.

Storage unit 1.5 is designed to record and store its own information packets for a time τ until the information packet is received at one of the interacting correspondents.

The channel state analyzer 1.6 is designed to analyze and process its own information packets received from the speakers.

The conversion block 1.7 is intended for converting the information parts of its own information packets into a code packet.

Each subscriber station 2 ₁ , (2 ₂ ) of the correspondent includes a radio transmitter 2.1 ₁ , (2.1 ₂ ), a radio receiver 2.2 ₁ , (2.2 ₂ ), a storage unit 2.3 ₁ , (2.3 ₂ ), an allocation unit 2.4 ₁ , ( 2.4 ₂ ), control unit 2.5 ₁ , (2.5 ₂ ), time division block 2.6 ₁ , (2.6 ₂ ), channel state analyzer 2.7 ₁ , (2.7 ₂ ).

The radio transmitting device 2.1 ₁ , (2.1 ₂ ) is designed to transmit its own information packets to the repeater with multi-station frequency access to the repeater.

The radio receiver 2.2 ₁ , (2.2 ₂ ) is designed to receive the group information stream from the repeater on a common channel.

The storage unit 2.3 ₁ , (2.3 ₂ ) is designed to store the information part of its own information package generated at this subscriber station, from the moment it is transferred to the repeater until the end of the allocation of the information part of its own information package of interacting correspondents.

The allocation unit 2.4 ₁ , (2.4 ₂ ) is intended for extracting from the single code packet its address part and code packet, as well as extracting the information part of the correspondent’s own information packet from the code packet using the stored information part of the information own packet of information.

The control device 2.5 ₁ , (2.5 ₂ ) generates control commands and ensures the interaction of all nodes of the subscriber station.

The time division block 2.6 ₁ , (2.6 ₂ ), is intended for temporary separation of channels from the received group information stream from the repeater.

The channel state analyzer 2.7 ₁ , (2.7 ₂ ) is designed to analyze and determine the status of temporary channels in a group information stream (FREE, BUSY, PACKAGE RECEPTION).

The claimed method of messaging in digital radio networks of decameter range with packet information is implemented as follows.

The proposed method is based on the time-frequency method of multiple access (MD) to the repeater, in which separate frequency bands are allocated for communication in the first section between the AS and the repeater (operating frequency group), and in the second communication section between the repeater and the AS they are allocated for operation separate time channels in a single group stream, and each position of a temporary channel in a group stream corresponds to an information signal from two correspondents.

When conducting information exchange between interacting correspondents of a decameter (DKM) digital radio communication network with packet data transmission previously from a relay acting as a base station over a common radio channel at a frequency f $\genfrac{}{}{0ex}{}{\text{*}}{\text{A, b}}$ suitable according to the conditions of propagation of radio waves, transmit the group information stream in the direction of the subscriber stations of correspondents A and B (see Fig. 1, Fig. 2a). At each AC of correspondents A and B, a group information stream transmitted from the repeater is received, free time channels corresponding to the frequency radio channel for MD to the repeater are allocated (see Fig. 2b, c). At the same time, the time channels in the group stream are tightly connected with the working frequency of the reception and processing paths 1.1.1 ₁ -1.1.1 _{n of the} i-th information radio channel with multi-station frequency access of the speakers to the repeater. This means that if, for example, radio transmitter 2.1 _{1 of} correspondent A is tuned to frequency f ₁ , and radio transmitter 2.1 _{2 of} correspondent B is tuned to frequency f ₃ , then the signal at the output of the relay will occupy the first and third time channels in the group stream (frame), respectively (see figv). Reconfiguring the radio transmitting device AC to another free working frequency of the i-th information radio channel will lead to a change in the number of the temporary channel occupied by it in the group stream.

At each AS of the interacting correspondents A and B, they form their own information packets, including the address and information parts (see Fig. 3a, c). The address part of its own information package contains the addresses of the interacting correspondents, the recipient address and the sender address and is a sequence of binary characters. The information part of its own information packet is also a sequence of binary characters. Own information packets generated at subscriber stations A and B have equal strictly defined (fixed) volumes V _A and V _B. After the formation of their own information packets at subscriber stations A and B, the information parts of these packets are stored in storage units 2.3 ₁ , (2.3 ₂ ) (see FIG. 1, FIG. 3b, d), and the generated own information packets are transmitted using radio transmitting devices 2.1 ₁ , (2.1 ₂ ) on the allocated free frequency radio channels f ₁ and f ₃ to the relay 1 (see figa). Moreover, the work of correspondent A at the selected frequency f _{1 is} carried out only during the transmission of its own information package to correspondent B (the recipient), and if there is no information about correspondent B, this operating frequency is released and another correspondent can use it.

строго фиксирован и не превышает объем собственных пакетов информации, формируемых на взаимодействующих абонентских станциях А и Б:

≤V_A=V_Б. Далее, в блоке временного объединения 1.2 формируют групповой информационный поток, причем временному каналу в групповом потоке соответствует единый кодовый пакет, представляющий информационный сигнал от двух корреспондентов (см. фиг.6б, в). Сформированный групповой информационный поток с помощью радиопередающего устройства 1.3 передают по общему радиоканалу на частоте f $\genfrac{}{}{0ex}{}{\text{*}}{\text{А,Б}}$ , пригодной по условиям распространения радиоволн, от ретранслятора в направлении на корреспондентов А и Б (см. фиг.1, фиг.6а).Received on the repeater in the amplification and processing unit 1.1 (see Figs. 1, 4a) own information packets from the correspondent A through the receiving and processing path at the frequency - f ₁ (S _A ) and from the correspondent B through the receiving and processing path at the frequency - F ₃ (S _B ) is identified in the control device 1.4. In this case, the addresses of the interacting subscriber stations A and B are determined, the presence of an information packet in the storage unit 1.5 to one of the correspondents, and the information and address parts of the received own information packets are allocated in the channel analyzer 1.6 (see Fig. 4b). In the storage unit 1.5, the information and address parts of their own information packets are stored for a time τ until the information packet is received at one of the correspondents (see Fig. 4c). After that, in the conversion block 1.7, the selected information parts of the own information packets of the interacting correspondents are element-wise summed modulo two, and a code packet is obtained (see Fig. 5a, b). Then, in the control device 1.4, by concatenation of the code packet generated in the conversion section 1.7 and the allocated address parts of the correspondents A and B, a single code packet S is formed $\genfrac{}{}{0ex}{}{\text{*}}{\text{A + B}}$ including address and information parts (see figv). In this case, the address part of a single code packet contains the addresses of the interacting subscriber stations A and B. The volume of a single code packet

strictly fixed and does not exceed the volume of their own information packets generated at the interacting subscriber stations A and B:

≤V _A = V _B. Further, in the temporary combining unit 1.2, a group information stream is formed, and a single code packet representing an information signal from two correspondents corresponds to a temporary channel in the group stream (see Fig. 6b, c). The generated group information stream using a radio transmitting device 1.3 is transmitted over a common radio channel at a frequency f $\genfrac{}{}{0ex}{}{\text{*}}{\text{A, b}}$ suitable according to the conditions of propagation of radio waves from the repeater in the direction of the correspondents A and B (see figure 1, figa).

After receiving the radio receivers 2.2 ₁ and 2.2 _{2 of the} group information stream, free temporary channels are allocated, while in the time division block 2.6 ₁ , (2.6 ₂ ), the time division of the channels is performed, the state of the time channels 2.7 ₁ , (2.7 ₂ ) is determined channels in a group information stream: FREE, BUSY, RECEIVING A PACKAGE. This information is fed to the control device 2.5 ₁ , (2.5 ₂ ), where a command is generated to tune the pathogen of the radio transmitting device to the working frequency that is currently free, with multiple access to the repeater, i.e. to the frequency that corresponds to the time channels in the group information stream, marked as FREE (see Fig. 2b, 2c). If during the communication process the operating frequency is occupied by any other AS, the channel state analyzer 2.7 ₁ , (2.7 ₂ ) generates a BUSY command and continues to search for a free channel. If during the communication process the channel state analyzer 2.7 ₁ , (2.7 ₂ ) determines the status of the temporary channel: RECEIVING THE PACKAGE, then in the allocation blocks 2.4 ₁ , (2.4 ₂ ) the address part of the single code packet and the code packet are extracted from the single code packet (see Fig.5b, c, Fig.6c). Then, in the allocation blocks 2.4 ₁ , (2.4h), the information part of the correspondent’s own information package is extracted from the code packet (see Fig. 5b, Fig. 7a, b). This selection is carried out using the information part of its own package of information stored in storage units 2.3 ₁ (2.3 ₂ ) (see figb, d). After the information part of the correspondent’s own information package is allocated, the information part of the own information package is erased in the storage units 2.3 ₁ , (2.3 ₂ ). In this case, to implement erasure in the storage blocks 2.3 ₁ , (2.3 ₂ ) of the information part of the own information packet, the information part of the next own information packet is used. In the absence of the next personal information package, at the completion of the information exchange between the interacting correspondents, in the storage blocks 2.3 ₁ , (2.3 ₂ ) there are the last transmitted information parts of the own information packets of the interacting correspondents. Next, at the interacting subscriber stations A and B, they form their next personal information packets, remember the informational parts of each subsequent own information packet formed at this subscriber station, and repeat all the above actions with their next own information packets until the information exchange is completed.

In the case of one-way transmission of one’s own information packets, for example, from the correspondent of the sender A to the correspondent of the recipient B, when the AC of the correspondent of the recipient B receives information from the AC of the correspondent of the sender A, but does not transmit anything to it (it works only for reception). At the AS of the correspondent of the sender A, they form their own information package containing the address and information parts (see figa). The address part of its own information package contains the address of the recipient of correspondent B and the address of the sender of correspondent A and is a sequence of binary characters. The information part of its own information packet is also a sequence of binary characters. After the formation of its own information packet on the AS of the correspondent of the sender A, its information part is stored in the storage unit 2.3), and the information packet itself is transmitted using the radio transmitting device 2.1 ₁ via the allocated free frequency radio channel f ₁ to the relay 1 (see Fig. 9a).

строго фиксирован и не превышает объем собственного пакета информации, формируемого корреспондентом отправителем А:

≤V_A. Далее, в блоке временного объединения 1.2 формируют групповой информационный поток, причем временному каналу в групповом потоке соответствует единый кодовый пакет (см. фиг.8г). Сформированный групповой информационный поток с помощью радиопередающего устройства 1.3 передают по общему радиоканалу на частоте f $\genfrac{}{}{0ex}{}{\text{*}}{\text{А,Б}}$ , пригодной по условиям распространения радиоволн, от ретранслятора в направлении на корреспондентов А и Б (см. фиг.1).At the AS of the correspondent of the recipient B, they do not form their own information packet; in the storage unit 2.3 ₂ , the last (previously transmitted) information part of the information packet of the interacting correspondents is stored in their block (see Fig. 86). On the allocated free frequency radio channel to the relay 1 own packet of information from the speaker of the recipient B is not transmitted. Accepted on the repeater in the amplification and processing unit 1.1 (see FIGS. 1, 9a, b) own packet of information from the correspondent A, through the receiving and processing path at the frequency f ₁ (S _A ) is identified in the control device 1.4. In this case, the address of the recipient of correspondent B and the address of the sender of correspondent A are determined, the last block (previously transmitted) of the information packet in the storage unit 1.5 from the recipient’s interacting correspondent B is selected, and the information and address part of the received own packet of information from the correspondent of sender A is allocated in the channel analyzer 1.6 (see figb). In the storage unit 1.5, the information and address parts of the own information packet are stored for a time τ until the information packet is received at one of the correspondents (see Fig. 9c). After that, in the conversion block 1.7, the selected information parts of the own information packets of the interacting correspondents A and B (see Fig. 8a, b) are element-wise summed modulo two, and a code packet is obtained (see Fig. 8c). Then, in the control device 1.4, by concatenation of the code packet generated in the conversion section 1.7 and the allocated address parts of correspondents A and B, a single code packet S is formed $\genfrac{}{}{0ex}{}{\text{*}}{\text{A + B}}$ including address and information parts (see Fig.8g). In this case, the address part of a single code packet contains the addresses of the interacting subscriber stations A and B. The volume of a single code packet

It is strictly fixed and does not exceed the volume of its own package of information generated by the correspondent sender A:

≤V _A. Further, in the temporary combining unit 1.2, a group information stream is formed, and a single code packet corresponds to a temporary channel in the group stream (see FIG. 8d). The generated group information stream using a radio transmitting device 1.3 is transmitted over a common radio channel at a frequency f $\genfrac{}{}{0ex}{}{\text{*}}{\text{A, b}}$ suitable according to the conditions of propagation of radio waves from the repeater in the direction of the correspondents A and B (see figure 1).

After receiving a group information stream by radio receivers 2.2 ₁ and 2.2 ₂ , free time channels are allocated, while in the time division block 2.6 ₁ , (2.6 ₂ ) time division of channels is performed, in the channel state analyzer 2.7 ₁ , (2.7 ₂ ) the state of time channels is determined in a group information stream. If during the communication process the channel state analyzer 2.7 ₁ , (2.7 ₂ ) determines the status of the temporary channel: RECEIVING THE PACKAGE, then in the allocation blocks 2.4 ₁ , (2.4 ₂ ) the address part of the single code packet and the code packet are extracted from the single code packet (see Fig. 8c, d). Then, in the allocation blocks 2.4 ₁ , (2.4 ₂ ), the information part of the correspondent’s own information package is extracted from the code packet (see Fig. 8a, b). This selection is carried out using the information part of its own package of information stored in storage units 2.3 ₁ , (2.3 ₂ ). At the same time, at the AS of the correspondent of the sender A, the previously transmitted information part of their own information package from the correspondent B is isolated, which indicates the absence of the next own information package from the correspondent B. At the AS of the correspondent of the recipient B in the allocation block 2.4 _{2, they} are extracted from the code packet using the latter (previously transferred) of the information part of its own information packet to correspondent A recorded in storage unit 2.3 ₂ , the information part of its own packet of correspondent A (see Fig. 8a). After the information part of the correspondent’s own information package is allocated, the information part of the own information package is erased in the storage units 2.3 ₁ , (2.3 ₂ ). In this case, to implement erasure, in the storage unit 2.3 _{1 of the} subscriber station A, the information part of the next proprietary information packet generated at this AS can be recorded, and in the storage block 2.3 _{2 of the} subscriber station B, the last transmitted information part of the proprietary information packet of interacting correspondents remains. After that, at the AS of the correspondent of sender A, they form their next own information packets and all of the above actions are repeated with their next own information packets until the transfer of their own information packets from the correspondent of sender A to the correspondent of recipient B.

Below is an example of the formation of a code packet in the conversion unit 1.7 of the relay 1 and the allocation of the information part of the correspondent information own packet in the allocation blocks 2.4 ₁ , (2.4 ₂ ) of the interacting subscriber stations A and B. As the information part of the proprietary information packet generated at the subscriber station A , the following binary sequence is conventionally accepted: 11001 (see Fig. 3b), and as the information part of its own information package generated at the subscriber station B, a binary pic research activity: 11001 (see Fig. 3d). The code packet generated in the conversion block 1.7 by adding elementwise two elements of the information parts of its own information packets modularly has the following form: 10101 (see Fig. 5b).

To extract the information part of the own information packet of the interacting correspondents produced in the allocation blocks 2.4 ₁ , (2.4 ₂ ) of the subscriber stations A and B, the code packet received from the relay 1 (see Fig. 5b) and the information part of the information packet of the own information will be used stored in the storage unit 2.3 ₁ , (2.3 ₂ ) (see figb, d). In this case, the information part of the own information package of the interacting correspondents A and B will be highlighted (see figa, b).

In case of one-way transmission of information, for example, from the correspondent of the sender A to the correspondent of the receiver B in the conversion unit 1.7 of the relay 1, the code packet will be generated by modulo adding two elements of the information part of the own information packet received from the correspondent of the sender A and the last (previously transmitted) own packet information from the interacting correspondent of the recipient B recorded in the storage unit 1.5. On figv shows a code packet, and on fig.8g - the corresponding single code packet obtained when using the last (previously transmitted) own packet of information recorded in the storage unit 1.5 from the recipient's interacting correspondent B (see fig. 8b).

In a one-way transmission of information to extract the information part of the correspondent’s own information package produced in the allocation unit 2.4 _{1 of the} correspondent A’s AC, the code packet received from the relay 1 will be used (see FIG. 8c) and the information part of the own information packet stored in the block storage 2.3 ₁ (see figa). In this case, the previously transmitted information part of its own information package from correspondent B will be highlighted, which indicates the absence of the next own information package from correspondent B (see Fig. 8b).

At the AS of correspondent B, to isolate the information part of the correspondent’s own information package, the code packet (see Fig. 8c) received from the relay 1 and the information part of the (previously transmitted) own information packet stored in the storage unit 2.3 ₂ for the interacting correspondent A ( see figb). At the same time, in the allocation block 2.4 ₂ , the information part of its own information package from correspondent A for correspondent B will be received, shown in Fig. 8a.

In principle, other methods of generating a code packet on a repeater that acts as a base station can be implemented, with the subsequent allocation of the information part of its own packet of information from the interacting correspondents of an automated digital radio communication network of the DCM range with packet information transmission.

Thus, the exchange of messages in an automated digital radio communication network of the DCM range with the packet transmission of information between interacting correspondents through a repeater is carried out using two communication channels instead of three. This leads to an increase in the throughput of the repeater and, consequently, to an increase in the throughput of the digital automated decametric radio communication network with packet data transmission.

Claims (1)

A method of exchanging messages in digital decameter range radio communication networks with packet information transfer, which consists in the fact that at each subscriber station included in the digital radio communication network, their own information packets are formed, including address and information parts, the information parts of their own information packets are stored on each subscriber stations transmit their own information packets, receive them on a repeater, where they are identified, and then the address and information parts of the property are allocated information packets, form a code packet and a single code packet by concatenating the code packet and address parts of its own information packets, transmit it, and after receiving a single code packet at a subscriber station, the address part and code packet are extracted from it, then the information part is extracted from the code packet own information packet, using the information part previously stored on this subscriber station, erase the previously stored information part of their own information packets, after which the above actions are repeated, characterized in that the group information stream is first transmitted from the relay, received at each subscriber station, where a free time channel corresponding to the frequency radio channel with multiple access to the relay is allocated from it, and after the address and information parts of the own information packets are allocated they are stored on the repeater for the time τ, until they receive their own packet of information to the address of one of the correspondents, and e code packet is performed by modulo summation of two selected information parts of their own information packets of interacting correspondents, and after the formation of a single code packet, a group information stream is formed, in each time channel of which a single code packet of interacting subscriber stations is represented.

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