Method of increasing reliability of digital message transfer

FIELD: physics.

SUBSTANCE: method contains steps, in which redundancy of the digital message is introduced by adding reference markers, for this purpose, prior to the start of the digital information signal transmission, the value of the reference markers that are entered and stored in the database of the hardware-software complexes included in the composition information network, and are not changed in the established time interval, then in the process of preparing the transmitted messages in the transmitting hardware-software complex, the digital message is formed in such a way that after each transmitted information signal "1" an additional reference marker is input through a known predetermined time interval smaller than the interval between the information signals, and after the transmitted information signal "0" through a predetermined time interval, the reference marker is not input, after receiving a digital message in the receiving hardware-software complex, analyzing the time intervals between the signals, the reference markers are extracted and the true value of the transmitted digital information signal is formed from the actually received message.

EFFECT: increasing the reliability of information transmission over a radio channel.

5 dwg

 



 

Same patents:

FIELD: transport.

SUBSTANCE: invention relates to vehicle (1) consisting of detachably interconnected rolling stock units (2) and containing data transmission device for cable data transmission between two rolling stock units (2) and within rolling stock units (2). The data transmission device contains on each rolling stock unit (2) the data input modules (3) to transmit data between corresponding rolling stock unit (2) and rolling stock unit (2) connected with it, as well as two mutually separate data connections linking both it data input modules (3). Herewith, each data input module (3) contains four data ports (7.1-7.4), as well as one or more switching modules (9, 9.1, 9.2) by means of which various electrical states of data ports (7.1-7.4) connection. Proposed invention also relates to method of data transmission in such vehicle (1).

EFFECT: more reliable rolling stock control.

13 cl, 5 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication systems, and more specifically, to communication devices and applications for those, that allow assigning of durability support services to the said device after registering in the service. The result is achieved due to a session central management server that authenticates the first communication device by assessing the account information, and assigns the first durability support server to the device, based on the current location data, contained in the first message.

EFFECT: result is provision of a continuous session and service in case of the network failure or of the service denial die to the dynamic durability support service assignment to communication devices based on the current location of the device and the data network neighbourhood.

19 cl, 4 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a control method of traffic flow in a packet network. A working subnetwork includes one or more prepared static working paths between one initial node and one or more target nodes in the network; with that, the working subnetwork includes a service copy. A provision is made for a redundant subnetwork that contains one or more dynamic safety paths between one above said initial node and one or more above said target nodes; besides, the redundant subnetwork is associated with the service copy. During normal operation of the network, redirection of subscriber traffic associated with the service copy takes place via the network using the working substation. After a network failure influencing on the service copy is detected, the subscriber traffic associated with the service copy is switched to be redirected via the network using the redundant subnetwork.

EFFECT: technical result of the invention consists in minimisation of quality reduction of servicing during network failures.

12 cl, 1 dwg

FIELD: information technology.

SUBSTANCE: communication system elements, communication system operating time, operating frequency adjustment time, duration of the transmitted signal, terminal equipment unsynchronisation time, the required time for breaking connection lines, and minimum and maximum values of electric field strength are set; the values of the strength of the electromagnetic field are measured, based on the results for predicting the electromagnetic environment and the possibility of occurrence of failures or constantly, without switching off users, in advance or constantly, over a given time interval, connection lines between the terminal devices or all devices are broken and said devices are earthed; at the end of said time interval, the connection lines are restored between the terminal devices or all devices and the earthing is removed.

EFFECT: high stability and protection of communication system elements from external destructive actions.

3 cl, 6 dwg

FIELD: information technology.

SUBSTANCE: information can be transmitted from a transmitting device to a receiving device and transmission can use valuable resources. Consequently, the number of transmission attempts can be monitored and compared with a threshold value. If transmission is carried out too many times (based on the comparison), reset can be performed. Monitoring can be carried out for a protocol data unit and/or control protocol data unit in order to determine whether to perform reset.

EFFECT: easy protocol data unit transmission, simple monitoring of successful control protocol data unit transmission, easy control of protocol data unit transmission, easy processing of protocol data unit reception.

60 cl, 14 dwg

FIELD: information technologies.

SUBSTANCE: data is sent from one source of data (1) to several terminal devices (2.1, 2.2, …2.n) via distributor (3a), which is connected to source of data (1). Besides terminal devices, accordingly, via input port (4) and output port (5) are connected one after another to chain (6) of terminal devices.

EFFECT: guaranteed functioning of terminal devices and components of data transfer system as separate terminal devices and components fail.

3 cl, 1 dwg

The invention relates to data transmission in a communication network, specifically to identify and determine the location of points of failure in a communication network

FIELD: physics, acoustics.

SUBSTANCE: invention relates to means of synchronising wireless headphones. In one embodiment, one speaker operates as the main speaker and other speaker operates as a secondary speaker. The main speaker receives digital audio data from a source and, in addition to reproducing digital audio received from the source, relays the digital audio to the secondary speaker. The main speaker additionally sends synchronisation data to the secondary speaker, such as data indicating the buffer status or the reproduction position of the main speaker. The secondary speaker uses the synchronisation data from the main speaker to control, for example, the status of its buffer or reproduction position so that the two speakers reproduce audio synchronously (for example, within 30 ms). In one embodiment, the main speaker uses a connection-based protocol, such as TCP/IP, in order to transmit buffered audio data to the secondary speaker, and uses a connectionless protocol, such as UDP or ICMP, for synchronisation data. Furthermore, the speakers can change the main and secondary speaker roles.

EFFECT: reducing Haas effect.

36 cl, 6 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to communication engineering and specifically to methods of transmitting information from physical quantity detectors using a current loop interface. A method of transmitting data using a current loop interface includes consecutively transmitting on the same transmission lines multiple analogue and digital parameters, wherein digital data are transmitted after transmitting analogue data with association to a second clock-pulse generated by a microcontroller sensor, digital data are transmitted byte-wise while breaking down the current range into 256 subranges, and transmission of control commands from the receiver, which includes a programmable microcontroller, to the sensor is carried out by changing the time of turning on power for, or measurement with testing and outputting of measurement results, or measurement with testing and turning colour display. In the method of transmitting data using a current loop interface, the current in the line ranges from 4 mA to 20 mA.

EFFECT: high noise-immunity of data transmission and powering the sensor directly from the transmission line.

2 cl, 1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication systems. A communication device for transmitting a very high throughput signal field B (VHT-SIG-B) is described. The communication device includes a processor and instructions stored in memory that is in electronic communication with the processor. The communication device allocates at least twenty signal bits and six tail bits for the VHT-SIG-B. The communication also uses a number of subcarriers for the VHT-SIG-B, which is the same as the number of subcarriers for a very high throughput long training field (VHT-LTF) and the DATA field. The communication device additionally applies a pilot mapping for the VHT-SIG-B which is the same as a pilot mapping for the DATA field. The communication device then transmits the VHT-SIG-B.

EFFECT: high capacity, reliability and efficiency of the communication device due to increased use of communication devices.

48 cl, 11 dwg

4-20ma transceiver // 2546576

FIELD: electricity.

SUBSTANCE: invention relates to the methods of measurement of the process parameters and remote transmission of obtained data. The invention offers 4-20 mA transceiver, containing series-connected into the current loop a receiver part comprising a current sensor, connected to an analogue-to-digital converter, parallel stabiliser, connected to the current sensor output, transmitting a part comprising a current source, connected to a parallel stabiliser output, and digital-to-analogue converter controlling a current source, a microcontroller with external power supply or powered from the parallel stabiliser for determination of a configuration of the analogue-to-digital converter and digital-to-analogue converter, meanwhile the analogue-to-digital converter and digital-to-analogue converter are connected to the parallel stabiliser output, and their digital interfaces directly or through a galvanic separation are connected to the microcontroller, and the transceiver input is the input of the current sensor, and the transceiver output is the output of the current source.

EFFECT: creation of reliable simple device functioning both as the 4-20 mA receiver, and the 4-20 mA sensor, powered from the current loop of this interface.

3 cl, 1 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to assigning addresses to multiple devices on a network. A network (10) comprises one or more devices (1, 2, 3, 4, 5), each device (1, 2, 3, 4, 5) having an address and said address comprising a device address (1.1, 2.2, 3.3, 4.4, 5.5) which is unique for each device (1, 2, 3, 4, 5) on said network (10), and a network address (A), which is common for all devices (1, 2, 3, 4, 5) on said network (10). The present invention also relates to a root device (1) and a method of assigning a network address (A) for devices (1, 2, 3, 4, 5).

EFFECT: avoiding conflicts in a simple and efficient manner.

13 cl, 7 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering. The invention can be implemented in a conditional access content broadcast system where it is desirable to identify and take measures against receiving equipment, applied when sharing control words. Owing to the requirement that receiving equipment used in the system transmits to a transmission station a conditional access content message at a precisely defined time, the invention provides a method through which a server identifies receiving equipment participating in the sharing of control words and prevents said receiver from further accessing said content.

EFFECT: effective protection of transmitted content.

12 cl, 2 dwg

FIELD: physics, computer engineering.

SUBSTANCE: Invention relates to data transmission in digital TCP/IP data networks via HTTP. The method of transmitting data in digital TCP/IP data networks via HTTP is realised by a system which includes network modules integrated into a client computer and a server computer and which facilitate a connection between the client computer and the server computer; receiving and transmitting network packets in the connection between the client and the server; encrypting the network packets for the established connection; tunneling the network packets; wherein between the client and the server there are at least two proxy servers connected to the client and the server; the method comprises establishing, by the network modules, a connection between the client and the server, wherein the connection is established through at least two proxy servers; creating a tunnel message in the client network module; transmitting the tunnel message to the server; selecting a delay T value based on maximum transmission speed of the tunnel message between the client and the server by carrying out the following procedures: establishing a time T variation interval and a time increment; measuring the transmission speed of the tunnel message for each value of T in the interval; selecting a value of T corresponding to the maximum transmission speed; determining the volume of a packet with false data Q; sending from the client a packet with false data with volume Q, T seconds after last transmission of false data via an HTTP tunnel; receiving the tunnel message at the server; disconnecting the Nagle algorithm for a TCP connection in network modules of the client and the server; disconnecting the TCP delayed acknowledgment algorithm in network modules of the client and the server.

EFFECT: high speed of transmitting data between a client and a server.

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a call control method and device. The call control method comprises steps of: receiving, by a call control device, a session request transmitted by a calling party, where the session request includes an identification label of the called party; and if a connection error occurs between the call control device and the serving call session control function (S-CSCF), verifying, in accordance with the identification label of the called party, if the called party is a user associated with the call control device, and if so, immediately transmitting the session request to the called party for call connection.

EFFECT: faster routing.

8 cl, 8 dwg

FIELD: radio engineering, communication.

SUBSTANCE: radio receiver, which includes series-connected input amplifier, first frequency converter, solid-state main selection filter, intermediate frequency amplifier, second frequency converter, low-pass filter, limiting amplifier and comparator, the output of which is connected to the input of a digital delay line made in form of an N-bit shift register and a clock generator, also includes a D flip-flop. The data input of the D flip-flop is connected to the connection point of the output of the comparator and the input of the digital delay line; the clock input of the D flip-flop is connected to the output of the digital delay line and the output of the D flip-flop is the output of the radio receiver, wherein the number of bits of the shift register should ensure a delay time associated with symbol carrier frequencies by a defined ratio.

EFFECT: simple radio receiver with autocorrelation separation of frequency-shift keyed continuous-phase signal transmissions.

8 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio engineering and can be used to estimate information capabilities of telecommunications networks, particularly to estimate information capabilities of a telecommunications network node. When determining efficiency of a telecommunications network node over a selected time interval, during which the amount of information in the telecommunications network node which is in static and dynamic state is measured, the total amount of information in the telecommunications network node is determined in a priority queue as a sum of messages of a first order and a second order, followed by finding cybernetic power of the telecommunications network node according to the expression KWP=(N1+N2)2N2G|T, where KWP is the cybernetic power of the telecommunications network node; N1 and N2 denote the number of messages of the first and second order of priority, respectively; G is the efficiency of the telecommunications network node; T is the averaging time interval.

EFFECT: high accuracy of estimating capabilities of a telecommunications network node when transmitting information messages of different priorities.

2 dwg

FIELD: information technology.

SUBSTANCE: method includes receiving, by user equipment (UE), carrier activation commands or carrier deactivation commands in an n-th downlink subframe; determining, by the UE, an updated downlink activated carrier as a set of current downlink activated carriers, beginning with the (n+k) uplink frame, wherein the set of updated downlink activated carriers is a downlink activated carrier updated after the UE receives carrier activation commands or carrier deactivation commands in the n-th downlink subframe, where n and k are positive integers, and k is greater than or equal to 5; sorting, by the UE, uplink control information (UCI) of each downlink carrier for X downlink carriers in accordance with a given rule, where X is a positive integer; and X downlink carriers belong to the set of current downlink activated carriers of the UE; transmitting, by the UE, the sorted UCI for X downlink carriers to a base station.

EFFECT: fewer errors when decoding uplink control information.

16 cl, 15 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a method, an apparatus and a system for configuring control channels in a mobile communication network and at a mobile station. The invention provides aligning the size of the control channel information of different formats with an equal number of coded control channel information bits and/or modulation symbols for each control channel. The control channels may contain scheduling-related control information. According to another aspect of the invention, a more flexible solution is proposed which allows taking different geometries of mobile stations in a cell into account. Similar to the aspect above, the size of the control channel information is aligned through modulation and/or coding, although the control channel information is aligned to one out of a set of numbers of coded control channel information bits and/or modulation symbols for each control channel.

EFFECT: improved control channel configuration scheme, particularly control channels relating to transmission of user data.

4 cl, 19 dwg, 14 tbl

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a method of data transmission in a wireless communication system with hybrid automatic request for repetition (HARQ). Assessment bias compensation CQI is performed by processing of HARQ receipts (7), a signal-code sequence (SCS) is chosen based on compensated assessment CQI, coding of a data batch (6) is performed by its help, after that, the first attempt of transmission of the batch of coded data to a receiver (4) is performed via a forward channel (2), the success of which is determined as per the type of HARQ receipt (7) received from the receiver (4) via a backward channel (3) in response to this attempt. In case the received HARQ receipt (7) is not positive, repeated attempt of batch transmission is performed via the forward channel (2). In order to provide the adaptive compensation of bias of assessment CQI, the first measure (S) is determined using at least two last HARQ receipts and based on it there determined is a value of a factor of coarse compensation, the second measure (T) is determined using at least one of the last HARQ receipts and based on it there determined is a value of a factor of fine compensation, a reset operation of the value of the fine compensation factor is performed till the initial value at the change of the current value of the coarse compensation factor and CQI assessment is changed considering values of the obtained values of the coarse compensation factor and the fine compensation factor.

EFFECT: providing control of the level of successful delivery of data from the first try of transmission; improving the efficient use of radio resources and speed of data transmission in a wireless communication system as a whole.

17 cl, 5 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to a method for wireless transmission of data and control information using a plurality of transmission levels. The method includes determining the number of bits in one or more codewords (122) of user data to be transmitted during a subframe, and calculating the number of control vector symbols (124) for allocation for control information during said subframe. The number of control vector symbols (124) is calculated based at least in part on the number of bits in one or more codewords (122) of user data to be transmitted during said frame, and estimation of the number of vector symbols (124) to which one or more codewords (122) of user data are to be mapped. Estimation of the number of vector symbols (124) depends at least in part on the number of control vector symbols (124) to be allocated for control information. The method also includes mapping one or more control codewords (120) to a calculated number of control vector symbols (124) and transmitting the vector symbols (122) of user data and control vector symbols (124) on a plurality of transmission levels during said subframe.

EFFECT: providing optimum allocation of transmission resources when there is need to transmit a large amount of control information.

30 cl, 7 dwg

Up!