Transmission of digital information, e.g. telegraphic communication (H04L)

Systems and methods for transmitting channel quality information in wireless communication systems

Invention relates to transmission of channel quality information in a wireless network. The method of obtaining a channel quality index (CQI) in a communication system comprises steps of receiving, in user equipment (UE), at least one of a cell-specific reference signal (CRS) and channel state information reference signal (CSI-RS), obtaining a CQI based on at least one of CRS and CSI-RS in a CSI reference resource; and transmitting the CQI to an evolved Node B (eNB), wherein the CSI reference resource is defined by a group of physical downlink resource blocks corresponding to the band associated with the obtained CQI value, and a downlink subframe.

Communication device, communication method and communication system

Present invention relates to a communication device, a communication method and a communication system, and especially to a communication device, a communication method and a communication system configured to share content, such as video, with a plurality of communication devices. The technical result is achieved owing to a storage unit which stores content, a recording processor which generates metadata relating to content and records the generated metadata in a database, a loading unit which sends to another communication device via a computer network a request for content stored by another communication device based on the metadata generated by another communication device, a downloading unit which transmits content stored by the storage unit via a computer network to another communication device which performs request based on metadata generated by the recording processor.

Method of power system substation operation

Group of inventions relates to devices of substations for power system substations. The specified substation device is made as capable of using device-dependent physical addresses for connection with other substation devices of the specified substation, besides, the specified substation device comprises a processing module to process information content of these messages. In accordance with the version of invention realisation the specified substation device additionally comprises a module of address conversion for conversion of the specified device-dependent physical addresses into device-independent virtual addresses and vice versa. The specified processing module is preferably connected to the specified module of address conversion and is made as capable to process messages on the basis of the specified virtual addresses.

Method and apparatus for multicast mobility

Invention relates to multicast mobility. A mobile access gateway (MAG) comprising: a first receiver configured to receive a first packet with a first Internet Protocol (IP) address from a first local mobility anchor (LMA) and a second packet with a second IP address from a second LMA, wherein the first LMA is a multicast LMA for multicast traffic and the second LMA is a unicast LMA for unicast traffic; a router configured to route the first packet and the second packet to a wireless transmit receive unit (WTRU) using both unicast and multicast services; a second receiver configured to receive a router request message from the WTRU; and a processor which is further configured to maintain a binding update list including entries for binding the WTRU with the first LMA and the second LMA.

Call control device and method

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.

Method of measuring phase shift variations of centre frequency of minimum frequency shift-keyed signals and apparatus for implementing said method

Method includes quadrature processing of an input signal in four parallel channels. In one pair of channels, the input signal is frequency-converted in an in-phase and quadrature manner relative to the transmission frequency of unit information bits, and relative to the transmission frequency of zero bits in the other pair of channels. The arctangent of the ratio of the quadrature signal component to the in-phase component is calculated for each pair of channels and the obtained phase characteristics are summed and averaged. The averaging result is the phase shift of the signal frequency in the communication channel. To determine signal amplitude distortions, the square root of the sum of squares of the in-phase and quadrature signal components is calculated for each pair of channels and the results are summed. The apparatus which realises said method consist of four multipliers, four low-pass filters, two arctangent calculating units, two devices for calculating the square root of the sum of squares of two values, two adders and an averaging circuit.

Wireless transmission protection system and method

Wireless transmission protection system and method relate to wireless communication. The method of transmitting secure messages by a transmitting device includes encoding a message using a secret code for generating L output code words, where L is an integer value greater than 1, wherein the secret code includes a first security code and a second security code, transmitting one of the L output code words to a communication device if the channel quality between the transmitting device and the communication device satisfies a certain criterion, repeating transmission for each of the remaining L-1 output code words.

Simulated signal-to-noise ratio reduction in decoded digital audio signal depending on wireless link bit-error rate

Invention relates to digital broadcasting which provides an audio indicator of link quality. After receiving a digital radio signal using a digital radio receiver, the quality of the received digital radio transmission is determined. Then an audio message from the received digital radio transmission is decoded. Then an audio indicator is superimposed onto the audio message, to form a composite audio signal. Finally, the amplitude of the audio indicator is dynamically adjusted relative to the amplitude of the audio message depending on the quality of the received digital radio transmission.

Extension of user equipment-specific reference signals for downlink pilot time slot

Invention relates to wireless communication, particularly to use of a user equipment-specific reference signal (UE-RS) scheme, which is a function of the number of symbols used for downlink transmission in a wireless communication system. Disclosed is a technique which facilitates sending and/or receiving UE-RS in a wireless communication environment. A UE-RS pattern can be selected based on a number of symbols from a subframe used for downlink transmission. At least one time-domain component of the UE-RS pattern can vary based on the number of symbols from the subframe used for downlink transmission. For instance, the at least one time-domain component can be punctured, time-shifted, and so forth. Further, UE-RS can be transformed into resource elements of the subframe as a function of the UE-RS pattern. User equipment can use the UE-RS pattern to detect UE-RS on the resource elements of the subframe, and can also can estimate a channel based on the UE-RS.

Transmitting cascade in bus assembly of bus network for generation of bit signal corresponding to transmitted signal, and generation method of bit signal from transmitted signal

Invention relates to electrical engineering, to a transmitting cascade in a bus assembly of a bus network, mainly in a bus assembly of EIB-network, which is connected to a bus line (Bus+, Bus-), for generation of a bit signal that corresponds to a transmitted signal that has a sequence of transmitted pulses and that consists of an active pulse for each transmitted pulse, which has duration Δt=t1-t0, with that, t0 indicates the beginning of the active pulse, and t1 - at the end of active pulse, and depth Ua of pulse, and an equalising pulse following after the active pulse, with circuit (A) for generation of active pulse, optionally, with circuit (B) for generation of the equalising pulse and at least one control circuit (C) that outputs transmitted signal (Usend) at least to circuit (A) for generation of active pulse. Pulse depth (Ua) of active pulse is set by the specified reference voltage (Uref) that is independent of the value of constant voltage component of a bit signal.

Method and device for monitoring amount of usage of services

Invention relates to a method and a device for monitoring amount of usage of services. The method includes steps of determining, according to quintuple information, or protocol information, or URL information in received service request information, whether the service request information is the same as specified service stream information in one or multiple session level service monitoring tasks, where the session level service monitoring task includes a session level service monitoring class identity, a monitoring task identity, and the specified service stream information; the monitoring class identity indicates that the monitoring task is used to monitor a usage amount of a specified service stream in a session; when determining yes, accumulating a usage amount of the service request information in the one or multiple session level service monitoring tasks; and reporting the monitoring task identity and an accumulated usage amount of the service request information in the session level service monitoring task to a PCRF.

Method and apparatus for obtaining security key in relay system

Invention relates to communication engineering. The method of obtaining a security key in a relay system, wherein a node in a relay system obtains an initial key, in accordance with the initial key, the node obtains a root key of the security key of the radio interface between the node and another node adjoining said node, and in accordance with the root key, the node obtains a security key of the radio interface between the node and said other adjoining node. Therefore, in accordance with the initial key, each lower-level node obtains a root key of the security key of the radio interface between each lower-level node, such that UE data on an interface link Un can be secured accordingly.

Method of protecting security data transmitted by transmitter device to receiver device

Invention relates to a method of protecting security data transmitted by a transmitter to a receiver, the method comprising periodic transmission to a receiver, alternately with said security data, of neutral data intended to prevent security data filtering.

Checking configuration modification for ied

Invention relates to technological process control systems and substation automation, and specifically to monitoring safety aspects during configuration and parameterisation of devices in such systems. The method of checking a configuration modification for an intelligent electronic device (IED) in a process control (PCT) or substation automation (SA) system comprises authenticating, by the IED prior to receiving a configuration modification request, the approver independent of the client, and storing, in the memory of the IED, a configuration modification reliability check elaborated by the approver, wherein the reliability check includes a maintenance schedule for the IED, a set of rules, or an expert system, for judging whether the configuration modification is acceptable, and approving or rejecting the configuration modification request based on a result of the reliability check used for specific circumstances of the configuration modification request.

Video monitoring system and control method therefor

Invention relates to video monitoring systems and a control method therefor. The video monitoring system comprises a signal interface gateway which receives, respectively, control signals from a digital video monitoring system and/or a matrix video system in an analogue video monitoring system and accordingly converts the control signals from the digital video monitoring system and/or control signals from the matrix video system. Said conversion includes creating a relationship table in the signal interface gateway which represents relationships between channels of the digital video monitoring system and channels of the matrix video system, and performs conversion of the control signals according to the relationship table.

Method and base station subsystem (bss) for accelerating acknowledgement of radio link control (rlc) window state

Present invention relates to mobile communication engineering. The method includes: at a signalling point in the mobile station (MS) reselection or handover process, judging whether there is an uplink and/or a downlink temporary block flow (TBF) corresponding to the MS, wherein, if there is an uplink TBF corresponding to the MS, then a BSS continuously sends M uplink acknowledgements to the MS for an uplink RLC sending-receiving window; if there is a downlink TBF corresponding to the MS, then for a downlink RLC sending-receiving window, the BSS sets relative reserved block period (RRBP) indicators in N data blocks allocated in a corresponding downlink TBF.

Enhanced block-request streaming using scalable encoding

Invention relates to multimedia streaming systems. The technical result is adaptation to taking advantage of the content reception capture process and preparing files with improved quality of block-request streaming when interacting with a user, as well as high bandwidth efficiency. The capture system receives content and prepares said content in form of files or data elements for use by a file server. The files or data elements are organised in form of blocks which are transmitted and decoded as a certain unit, and the system is configured to provide and consume scalable blocks, such that the quality of presentation improves when a large part of a block is loaded.

Communication control system and communication control method

Invention relates to communication control systems. In a system, where a communication device is remotely controlled from a control server, depending on time when an element is entered into a table for forwarding the communication device from the control server, there is a probability of looping and traffic rejection. Hence, for recording, rerecording and deleting of the forwarding table element performed on the communication device 102 through the control server 101, the communication device 102 checks the content of control instructions from the control server 101 and stores the result of said checking. The control server 101 obtains the checking result and decides whether or not the control sequence can be executed based on the checking results from a plurality of communication devices 102, and the control server 101 then instructs each communication device 102 to execute said control sequence.

Communication network for track-connected vehicle

Invention relates to rail vehicles with several cars equipped with data communication network. Track-connected rail vehicle with several cars and communication network for data signal transfer which network includes two lines passing through cars where in the cars corresponding one of lines passes over one portion, and the other - over the second portion spatially separated from it. In one of the cars, passage of corresponding line changes from the first portion to the second portion, and passage of corresponding other line changes from the second portion to the first portion. In the first portion network components are provided to regenerate data signals being transferred in lines.

Reliable broadcast delivery of communications in land-based seismic surveying

Invention relates to geophysics and can be used in land-based seismic survey. The disclosed method for use in land-based seismic survey includes a step of transmitting a plurality of source control commands to a plurality of seismic sources over a VHF/IP network using a UDP without a storage state. Congestion on the VHF/IP network is managed using the UDP while transmitting the source control commands. The invention also discloses a program storage medium encoded with instructions which, when executed by a processor, execute said method and a computer programmed to execute said method of transmitting seismic data.

Method of determining operation parameters of digital communication system and device for method implementation

Invention refers to electric engineering and can be applied in transmission/reception devices, measurement instruments, in analogue and digital modelling of digital communication systems. Method of determining operation parameters of digital communication system involves selection of highly stable reference and adjustment signal, determination of reference signal range amplitude, generation of additional signal from reference and adjustment signals, filtration of resulting signal by low frequency and its use in correction of signal to be adjusted, determination of at least two amplitudes of corrected signal, generation of two additional signals from corrected signal amplitudes and from reference signal amplitudes used to determine additional amplitudes, and further determination of operation parameters by given relation with amplitudes obtained. Device includes reference and adjustable generators, two range analysers, parameter determination unit of phase detector, data recorder, four multipliers.

File uploading method and system for web application

Group of inventions relates to means of transferring files in a web application. The invention discloses a method and a system for uploading a file in a web application, comprising: a user of a client-side program inputting a file to be uploaded into a security trusted control, and the security trusted control uploading the file input by the user to a FTP server and uploading information related to the file to a web server. The web server then sends the information related to the file to an interface message processor, so that the interface message processor downloads the file from the FTP server according to the information related to the file and sends the file to a media resource management server.

Device for receiving binary information via two parallel communication channels

Device for receiving binary information via two parallel communication channels includes an input AND 1 element and an input OR 2 element, outputs of which are connected to inputs of the first and second error protection units 3, 4, respectively, wherein data inputs of the input AND 1 and OR 2 elements are connected to the first and second buses of the parallel communication channels 5, 6. The device also includes a third and a fourth error protection unit 7, 8, four digital inverters 9, 10, 11, 12, four AND elements 13, 14, 15, 16, four switches 17, 18, 19, 20 and a second OR 21 element, a data output of the device 22 and a request-repeat signal output 23.

Method for iterative detection and decoding of signal in communication systems with mimo channel

Method for iterative detection and decoding of a signal in communication systems with a MIMO channel includes two steps: at the first step, generating a Minimum Mean Square Error (MMSE) estimate of a transmitted symbol using a linear MMSE filter; at the second step, via linear transformation of each n-th (where n=1, 2, (N)) component x ˜ M M S E , n of the vector of MMSE estimates X ˜ M M S E and the corresponding a priori mathematical expectation, performing correction and finding a new linear estimate x ˜ L M S , n of the transmitted QAM symbol and error variance for said estimate σ LMS ,n 2 .

Methods and systems for pdcch blind decoding in mobile communication

Invention relates to mobile communication and specifically to blind decoding of a physical downlink control channel (PDCCH) for user equipment. The method of decoding a PDCCH signal comprises receiving the PDCCH signal; estimating a maximum number of information bits used in the PDCCH signal by estimating a selected channel control element (CCE) in the PDCCH signal; restraining a candidate number of information bits to a first set of information bits; mapping a first subset of the first set to a second set; mapping a second subset of the first set to a third set; restraining concatenation of elements of the sets to form an order and performing blind decoding.

Method and apparatus for creating peer-to-peer group in peer-to-peer application and method of using peer-to-peer group

Invention relates to network communication, particularly a method and an apparatus for creating a peer-to-peer group and a method of using a peer-to-peer group. Said method includes the following steps: at the first step a user terminal obtains one or more primary nodes from a peer-to-peer (P2P) network server; the P2P network server returns said one or more primary nodes in accordance with an adjusted policy; the user terminal creates a primary P2P group from said primary nodes; nodes of the primary P2P group interact with each other to obtain information about other nodes of other P2P groups and create a new P2P group based on the information about said other nodes. Therefore, said new P2P group facilitates a stable interconnection between nodes and the nodes can properly serve if network resources are needed. Furthermore, node control is carried out in the user terminal, thereby reducing the operating load and costs on the server, wherein the nodes can be better utilised and user satisfaction with network performance is improved.

Radio receiver with autocorrelation separation of frequency-shift keyed continuous-phase signal transmissions

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.

Method of improving reception of data set repeatedly transmitted in complex environment

Invention relates to means of improving the error coefficient on received words repeatedly transmitted in a complex environment. The method includes adding identification data information shorter than the set of said data and encoded more reliably than said data; identifying each incoming data entity or data set using the identification information; storing the energy of data or data set with the same identification information; if enough energy is stored, the corresponding data set or corresponding data entity is considered confirmed.

Multiplexing control and data information from user equipment in mimo transmission mode

Invention relates to means of multiplexing uplink control information (UCI) with data information in a physical uplink shared channel (PUSCH) transmitted over multiple spatial layers. The method includes determination of the number of coded UCI symbols in each spatial layer when the data information is conveyed using multiple transport blocks, determination of the number of coded UCI symbols in each spatial layer when the PUSCH conveys a single transport block retransmission for a hybrid automatic repeat request (HARQ) process while the initial transport block transmission for the same HARQ process was in a PUSCH conveying multiple transport blocks and determination of the modulation scheme for the coded UCI symbols.

Method and apparatus for sending channel quality indicator feedback in multi-carrier system

Invention relates to multi-carrier wireless communication systems. An reference carrier scheme is employed to provide channel quality indicator (CQI) feedback of one or more downlink carriers; CQI feedback is transmitted for one or more downlink carriers using the reference carrier and CQI feedback is removed for at least one of the one or more downlink carriers based, at least in part, on determining conflict between rank indicator transmission and CQI feedback transmission.

Communication system and method of creating topology information

Invention relates to a communication system which includes a plurality of packet transmission units and a control unit for controlling the packet transmission units. The system comprises a plurality of packet transmission units and a control unit which controls each packet transmission unit. The control unit includes a means of transmitting a reply request, a means of receiving a reply, a means of creating topology information, a means of determining control channel and a means of transmitting control channel notification. Each packet transmission unit includes a transmission means, a means of receiving a reply and a channel storage means.

Code generating apparatus, reference signal generating apparatus, and corresponding methods

Invention relates to wireless communication engineering and can be used to generate codes. A reference signal (RS) generator includes a sequence generator configured to generate a sequence for the reference signal of a first resource block, a first spectrum spreading unit, a second spectrum spreading unit, a third spectrum spreading unit, a fourth spectrum spreading unit and a mapping unit configured to map elements with spectra thereof, spread by the first and second spectrum spreading units, to the first and second frequency resources of the first resource block, respectively, and map elements with spectra thereof, spread by the third and fourth spectrum spreading units, to the third and fourth frequency resources of the first resource block, respectively.

Scheduling with reverse direction transmission grant in wireless communication systems

Invention relates to wireless communication engineering and can be used to grant reverse direction transmission. The method of scheduling with reverse direction transmission grant comprises receiving, in a receiver from a transmitter, a multi-poll frame that schedules transmissions for a number of time periods associated with transmission opportunities; transmitting data in a first direction from the receiver to said transmitter according to the multi-poll frame, wherein data transmission is terminated before the end of a specific period from the scheduled time periods; transmitting a reverse direction transmission grant from the receiver to said transmitter, wherein the reverse direction transmission grant allows the transmitter to transmit data in a second direction to the receiver using a specific period from the scheduled time periods associated with a specific transmission opportunity; and receiving, in the receiver, data transmitted in a second direction from said transmitter, which schedules transmissions during a specific time period from the scheduled time periods associated with a specific transmission opportunity.

Pilot signals for use in multi-sector cells

Invention relates to communication engineering and can be used in wireless communication systems. Pilot signals in different sectors are transmitted at different known power levels. In adjacent sectors a pilot signal is transmitted while no pilot signal is transmitted in the adjoining sector. This represents transmission of a NULL pilot signal. A cell NULL is also supported, wherein NULL pilot signals are transmitted to each sector of a cell at the same time. Multiple pilot signal measurements are made. At least two channel quality indicator values are generated from measurements corresponding to at least two pilot signals of different power levels. The two values are transmitted back to the base station which uses both values to determine the transmission power required to achieve a desired SNR at the wireless terminal. The wireless terminal also reports information indicating its location to a sector boundary.

Relay transmission method and apparatus

Invention relates to a wireless communication system which uses relay. The invention particularly discloses a method which includes: configuring a subframe of a time division duplex (TDD) for a subframe of relay link (S201), where the configuring the subframe of the TDD relay frame for the subframe of the relay link includes: configuring a downlink (DL) subframe of the TDD relay frame for a DL subframe of relay link, and/or configuring the DL subframe of the TDD relay frame for an uplink (UL) subframe of relay link, and/or configuring a UL subframe of the TDD relay frame for the UL subframe of relay link; and performing relay transmission according to the subframe of relay link (S202). When data is transmitted, a subframe that can be used for relay link transmission is configured, data transmission performed by using relay link complies with inherent constraints of a TDD frame structure in the prior art and coverage of the system using the TDD relay frame.

Method and system for facilitating interaction of network device with flash device

Invention relates to communication. The method comprises: the network device sending a flash device call instruction to a client, the instruction containing information on the called flash device; after receiving the instruction, the client enabling a flash control element to perform an operation based on information on the called flash device contained in the instruction. The system comprises a network device, a flash device and a client. The flash device and the network device are capable of calling each other and also have the same status on the client. Thus corresponding functions may be fully utilised. The flash device and the network device are capable of gaining indirect access to client resources, which improves efficiency of access.

Selection of transport format in wireless communication systems

Invention relates to selection of a transport format for sending information from a sending node to a receiving node via a wireless link. The method comprises steps of: obtaining a quality indicator, wherein the quality indicator indicates the current channel quality of the wireless link; determining a throughput indicator, wherein the throughput indicator indicates the throughput of at least a first transport format and a second transport format available at the obtained quality indicator; calculating a switching value based on the quality indicator and the throughput indicator; switching to the second transport format when the quality indicator indicates that the switching value is reached or exceeded with respect to the second transport format; sending a notification to the second node, wherein the notification indicates the switch to the second transport format.

Device and method for header transmission in wireless communication system

Invention relates to wireless communication systems. A method of transmitting a SA header includes steps of determining a SA header, constructed in a unit of subblocks, according to a frequency band to be used for transmitting information, determining a sequence for reducing a PAPR of the SA header in consideration of at least one frequency band, a segment identifier (ID), and the number of antennae transmitting the SA header, updating the SA header using the determined sequence, and transmitting the updated SA header to a receiving end.

Method and apparatus for loading data

Invention relates to network communication. The technical result is improved data loading efficiency. The method includes the following operations: a loader determining data chunks of the loading process based on stored information on loading data chunks, the loader determining small chunks of unloaded data based on the stored information on loading small data chunks, and the loader loading small chunks of unloaded data. The loader includes: a storage module for storing information on loading data chunks and small data chunks; a determining module for determining data chunks of the loading process based on the information on loading data chunks stored in the storage module; said module is also designed to determine small chunks of unloaded data based on the stored information on loading small data chunks; a loading module for loading small chunks of unloaded data determined by the determining module.

Method, apparatus for television service system management in ip data networks and television service system in ip data networks

Invention relates to data transmission systems The result is achieved due to that the method comprises an electronic program guide (EPG) standby server receiving a reception command message sent by a service manager, where the reception command message instructs the EPG standby server to obtain service information of a currently malfunctioning EPG network server; the EPG standby server obtaining service information of a currently malfunctioning EPG network server according to the reception command message, and sending a response reception command message to the service manager after receiving the service information.

Conversation access rights management

Invention relates to computer engineering. The method of managing conversation access rights comprises steps of: receiving a request for creating a conversation access rights based restriction for a communication session at a rights management server; providing a license to a requesting first client application; receiving another request from a second client application for the license, the second client application being invited to participate in the communication session with the first client application; providing the license to the second client application in response to confirming communication session access rights. The communication system implements said method and a machine-readable medium contains instructions for implementing the method.

Duty-free trade service system on vehicle and method therefor

Invention relates to a system and a method for duty-free trade on a vehicle. The system includes a customs processing and logistics unit, which includes a central server and a customs authority server, connected to each other via the Internet, as well as a customs terminal, a unit of stations for consolidation, distribution and packaging of orders, which includes a local commodity storage and a server for collecting, processing and distributing orders, an order unit, which includes a personal computer of the customer, a fixed terminal for receiving orders over a local area network, an operational unit, which includes a mobile system comprising a mobile personal computer with a commodity database, as well as a wireless data collection terminal, a wireless scanner of machine-readable barcodes, a wireless printer, a self-contained cash register and a mobile POS terminal for receiving payments using bank cards, wherein the units are connected to each other wirelessly and with servers of the stations for consolidation, distribution and packaging of orders via the Internet.

Method and device for link protection in virtual private local area network

Invention relates to network data communication technology and particularly to a method and a device for link protection in a virtual private local area network. The technical result is reducing loss of data by creating a standby tunnel to which service is switched if malfunction is detected in the main tunnel. The method disclosed herein includes: in a networking process of a VPLS network, a link protection device establishing a main tunnel and a standby tunnel of MPLS TE for a link, and creating a VPLS forwarding table to deal with the information of the established MPLS TE main tunnel and standby tunnel; and when receiving a VPLS message, the link protection device searching the information of the MPLS TE main tunnel of the VPLS message according to a way of accessing the VPLS network of the VPLS message and the VPLS forwarding table, and if the found MPLS TE main tunnel is invalid, then transmitting the received VPLS message by adopting the standby tunnel of the MPLS TE main tunnel.

Method and system for updating network device

Invention relates to the technology of updating a network device in the field of communication. The method of updating a network device involves a network management server establishing a Transmission Control Protocol (TCP) connection with the network device (101); during the update process, the network management server transmitting a private protocol, created at the TCP, to the network device to notify the network device on the update, the network device subsequently performing the respective update operation after obtaining the notification and returning an update result to the network management server via the private protocol created at the TCP (102).

Method and apparatus for transmitting ack/nack signal in wireless communication system

Invention relates to mobile communication. The invention is intended for transmitting an ACK/NACK signal in a wireless communication system. In some versions, a sequence which corresponds to either acknowledgement (ACK) information or negative acknowledgement (NACK) information can be determined. Further, the sequence can be mapped on a transmission channel for subsequent transmission from a mobile station to a base station. In some versions, a transmission channel may be allocated at least a part of three feedback mini-tiles (FMT), wherein each of the FMT comprises two subcarriers contiguous in frequency domain by six orthogonal frequency division multiplexing (OFDM) symbols contiguous in time domain and the three FMT being discontinuous in frequency domain.

Transmission of information about channel state by means of feedback

Invention relates to wireless communication and is intended for transmission of information about a channel state by means of feedback. A method of providing information about the channel state for the wireless communication channel between the first net node, which has at least one transmitting antenna and the second net node, which has at least one receiving antenna, contains the following stages: assessment of the current value of, at least, the first type of information about the channel state, at least, for one subchannel within the range of the said channel from signals, received by means of, at least, one receiving antenna by the said channel, at least, from one transmitting antenna; determination of whether the current value of the first type of information about the channel state differs from the earlier transmitted value for the first type of information about the channel state, at least, by the specified value; and if it is so, transmission of an indicator, specifying the current value for the first type of information about the channel state, to the first net node.

Elliptic curve cryptography

Invention relates to a method an apparatus for performing cryptographic transformation in an electronic component. The method comprises obtaining a point P(X,Y) based on a parameter t on an elliptic curve which satisfies the expression Y2=f(X), and based on polynomials X1(t), X2(t), X3(t) and U(t), which satisfy the equation f(X1(t)).f(X2(t)).f(X3(t))=U(t)2 in Fq, wherein q=3 mod 4; further obtaining the value of the parameter t and determining the point P by carrying out substeps for (i) calculating X1=X1(t), X2=X2(t), X3=X3(t) and U=U(t), (ii) if the element f(X1).f(X2) is a square, checking if the element f(X3) is a square in Fq, and if so, calculating the square root of the element f(X3) to obtain a point P(X3), (iii) otherwise checking if the element f(X1) is a square, and if so, calculating the square root of f(X1) to obtain a point P(X1), (iv) otherwise calculating the square root of the element f(X2) to obtain a point P(X2), and then using said point P in a cryptographic application.

Dynamic selection of subframe formats in wireless network

Invention relates to methods of supporting communication in a wireless network. For dynamic selection of subframe formats in a wireless network, a base station dynamically switches between different subframe formats. The base station declares a set of subframes as multicast/broadcast single frequency network (MBSFN) subframes for first/legacy user equipment (UE). The base station sends signalling conveying the set of subframes as MBSFN subframes to the legacy UE. The base station may dynamically select the formats of the set of subframes for second/new UE, e.g., on a per subframe basis. The format of each subframe may be selected from a plurality of formats, which may include at least one regular subframe format, at least one MBSFN subframe format, and/or at least one blank subframe format. The base station may send transmissions in the set of subframes based on the selected formats.

System and method for redirecting messages to active interface of multiple-interface device

Invention relates to means of redirecting messages to an active interface of a device. A first network receives a first message from a user device before a first interface of the user device is turned off, wherein the first message requests that messages for the user device be forwarded via a second network which corresponds to a second interface of the user device, wherein the first message is a redirection request. The second message for the user device is received. The second message is forwarded to the second network.

Intelligent routing

Invention relates to client-server systems, particularly to technologies where a server and a router are situated in the same physical computer system which employs optimised transportation to transfer a client request from the router to the server and returning a response. The system comprises server and router modules. The router module receives a client request and, to execute the request, obtains a network address of a server module, and determines whether the server module runs on the same computer. If it is determined that the server module is not running on the same computer, the router module reroutes the client request to the server module, and if it is determined that the server module is running, the router module reroutes the client request to the server module using optimised transportation.