Method for identification of changes in broadcasted database
FIELD: methods for identification of changed in repeatedly broadcasted database.
SUBSTANCE: in accordance to the method data is produced in fragments, document is received which contains information about fragments, information is analyzed, and fragments are received repeatedly in accordance to aforementioned information.
EFFECT: possible listening of repeated broadcasting with minimal processing of data, detection of change of any data element and determining of location where the change is described.
4 cl, 2 dwg
The invention relates to a method easier identification of changes to repeatedly broadcast the database.
For systems that implement the broadcasting of audio/visual content (meaningful information content) to end users, usually characteristic and the broadcast data and/or metadata along with the audio/visual content. In order to implement systems standard TV Anytime ("TV-anytime") for metadata to describe the programs that you want to broadcast database information, which gives a description of the programs. To the receiving equipment was able to get the database when you configure a channel at any time, you must re-repeated broadcasting data according to the principle of the carousel. The database can be very large, and the periods of the carousel can be very long.
MPEG-7 defines a specification for conversion to a binary data file format for extensible hypertext markup language (XML) and to send updates. This standard does not address the issues arising from the repeated broadcasting. The MPEG-2 DSM cc Object Carousel is adopted for digital video (DVB) to send data to the file system when the broadcasting format for repeated re-broadcast. Carousel Object Carousel) is a major component of this technical solution, which is built to the EN higher level Protocol on top of the carousel object.
For a receiving device that receives the database, it is undesirable to perform constant listening in relation to the broadcast database and continuously to get it. It is likely that after some period of time this device is either not will need the current data, or it will put them in the cache locally on disk). It is desirable that these receptors were performed with opportunity, with minimal data processing, to listen duplicate broadcast, detect when any data element has changed, and determining which describes this change.
The objective of the invention is to solve the problems of the prior art.
According to the first aspect of the present invention provides a method of obtaining repeatedly broadcast data, according to which: receiving said data in fragments, receive a document with information about the mentioned fragments and re-receive the said fragments according to the aforementioned information.
In accordance with the second aspect of the invention provides a device for repeatedly broadcast data containing a receiving means for receiving the aforementioned data in fragments and to obtain a document containing information about the mentioned fragments, and processing means for analyzing the KJV is anotai information; these receiving device again receives the above-mentioned fragments in accordance with the aforementioned information.
According to a third aspect of the present invention provides a method of repeated broadcast data, according to which: perform the broadcasting of such data in fragments and perform the broadcasting of the document containing information about the mentioned fragments.
According to a fourth aspect of the present invention provides a device for repeated broadcast data containing the transmitting means for broadcasting the mentioned data in fragments and broadcast document containing information about the mentioned fragments.
The invention enables more efficient access to broadcast data.
The paper preferably contains a time stamp for each piece of data, with each time stamp indicates when the corresponding fragment was last updated. The document also preferably contains a timestamp indicating when the last time I updated the document itself. In the ideal case, the signal that initiates the re-obtaining fragments, is sent to the receiving device.
Embodiments of the invention are stated solely as an example, with reference to the accompanying drawings, where:/p>
Fig. 1 - schematic diagram of a broadcasting system, and
Fig. 2 is a schematic diagram showing the relationship between pieces of data and documents of the first and second levels.
In the broadcasting system according to Fig. 1, the transmitter 10 broadcasts the signal 14 to the receiver 12, which is a digital TV. Signal 14 includes audio/visual content 16 and the carousel 18 data. The carousel 18 data contains fragments of 20 data and document 22 of the upper level.
The transmitter 10 repeatedly broadcasts data 18 and includes a transmitting means for broadcasting data in fragments and broadcast of the document 22, which contains information about the fragments 20. The receiver 12 includes a receiving means 13 for receiving data 20 in fragments and to obtain the document 22, which contains information about the fragments of 20 data. The receiver 12 also includes means 15 for processing data analysis in document 22, while the receiving means 13 again receives fragments of 20 data according to the information in the document 22.
Broadcast database is divided into well-defined fragments 20. Each segment 20 is a piece of information, which should be updated as a whole. At the top level defined in the document 22 "top level", which describes where to find each piece of 20 (for example, file name) and its relationship with other frag the customers. In document 22 of the upper level is provided with a time stamp that describes when each block 20 has been updated in recent times. Document 22 of the upper level also has a timestamp indicating when it was last refreshed.
Document 22 top-level injected in a well known location in the file system broadcast (e.g., merry-go-round objects). The term "well-known" here means that either the location agreed upon well-known manner, or there is a standardized way of signaling the location of the document in the stream data transport. Document 22 of the upper level is entered in the "module" carousel objects in accordance with the specification carousel objects. The receiver 12 can easily extract the identification data of the module.
To identify updates the receiver 12 listens in relation to the module in the carousel object. The carousel object is signaled when the module is updated. Thus, when the receiver 12 identifies that the module containing the document 22 of the upper level, updated, he opens the module and analyzes the document 22 of the upper level. Timestamp confirmed (or not confirmed)that the document 22 of the upper level contains the change. If a change is found, the receiver 12 analyzes the document 22 top level object is detected by the I time stamps in each fragment identifier, to determine which fragments 20 changed. The receiver 12 can then decide whether this update is significant or not.
This system can be done with greater expandability through assumptions one document 22 of the upper level and a variety of documents 24 "second level", which has essentially the same functionality. Fig. 2 shows the relationship between the top level document 22, the documents 24 second level and 20 fragments of data. Optionally the document 22 top-level refers to the documents 24 of the second level. This link has a time stamp for easy identification of updates. And the document 22 of the upper level, and documents 24 of the second level can refer to fragments 20. Thus, the timestamp is still relatively easy identification of where the changes are and whether they are significant.
Document 22 received by the receiver 12 may be a specific file that is addressed is called again and saved by the receiver 12, or it can be part of a larger index transmitted by the transmitter 10 as part of the carousel 18 data. In the latter case, the document 22 is extracted from the index to read on request by receiver 12.
This system is particularly applicable to digital video (DVB) metadata standard TV Anyime.
1. The method of obtaining repeatedly broadcast data containing phases in which receive said data in fragments, receive a document containing information about the mentioned fragments, analyze the information and get re-referred to the fragments in accordance with the aforementioned information.
2. The method according to claim 1 in which the said document contains a time stamp for each piece of data, with each time stamp indicates when the corresponding fragment was updated last time.
3. The method according to claim 1 or 2, in which the said document contains a timestamp indicating when the said document was last refreshed.
4. The method according to claim 1 or 2, additionally containing phase, which take the signal that triggers the re-receiving pieces of data.
5. Device for repeatedly broadcast data containing a receiving means for receiving the aforementioned data in fragments and to obtain a document containing information about the mentioned fragments, and processing means for analyzing said information, these receiving means repeatedly obtains the aforementioned fragments in accordance with the aforementioned information.
6. Way repeated broadcast data containing phases, which perform the broadcasting of such data in the FR is mentah and perform the broadcasting of the document, contains information about the mentioned fragments.
7. The method according to claim 6 in which the said document contains a time stamp for each piece of data, with each time stamp indicates when the corresponding fragment was updated the last time.
8. The method according to claim 6 or 7, in which the said document contains a timestamp indicating when the said document was last refreshed.
9. The method according to claim 6 or 7, optionally containing phase in which broadcast signals, when said document is updated.
10. Device for repeated broadcast data containing the transmitting means for broadcasting the mentioned data in fragments and broadcast document containing information about the mentioned fragments.
FIELD: technology for adaptive computation of encoding speed when using RTP/RTCP transmission protocol.
SUBSTANCE: in accordance to the invention, adaptive estimation of transmission speed is performed depending on packet loss coefficient; if the loss coefficient is low, then known equation is used for estimation, if loss coefficient is average, then linear approximation of known equation is used for estimation, and if loss coefficient is high, then predetermined value of minimal speed is used.
EFFECT: prevented overestimation of transmission speed in case of high packet loss.
5 cl, 5 dwg
FIELD: communications; data transfer in communication systems.
SUBSTANCE: receiver system determines current heading threshold and current heading metric and finds out if heading is detected. If it is, receiver finds out if earlier heading was detected during earlier time interval having common time-interval alternating index and takes decision by multiple results of heading detection basing on at least one of following parameters: thresholds of current heading and earlier one; metrics of current heading and earlier one. Receiver detects data following chosen heading and evaluates detected data CRC. If CRC failure is detected, receiver determines new current-heading threshold. New threshold of current heading is higher than old one. If current heading metric is higher than new threshold of current heading, receiver defines CRC failure as true CRC failure, if otherwise, as fictitious CRC failure.
EFFECT: enhanced operating reliability.
18 cl, 9 dwg
FIELD: technology for transferring packet data in communications system.
SUBSTANCE: in accordance to invention, packet transfer with full header or compressed header is selected depending on low level report and preferably independently from any request from receiving device, preferably selection is performed at the level of packet data convergence protocol, and the lower level is set at radio link control protocol, in one example of realization, connection of full header to the packet is started on message of radio link control protocol about error during transfer of previous packet, in another example of realization, one of triggers of connection of full header to packet is excluded on message of radio link control protocol about successful transfer of previous packet with full header, while transfer of packets with full headers is preferably controlled on basis of lower level information via reverse communication channel, this information indicates whether a previously transferred packet with full header was successfully received by the receiving device.
EFFECT: creation of efficient packet data transfer method ensuring high transfer speeds.
2 cl, 21 dwg
FIELD: engineering of data transfer networks.
SUBSTANCE: method and device may be used for controlling alternating loads in accordance to a graph in packet data transfer network. At given position, instant bandwidth requirement for passage of traffic through a set of active channels is compared to available bandwidth. When available bandwidth in aforementioned given position is less than bandwidth, required for transmission of signals being transferred via all these active channels, speed adjustment mechanism is used for at least one of the active channels, periodically repeating that check. Speed adjustment mechanism is applied to packet signals, incoming through at least one group of active channels, for ensuring support of balanced signal quality for signals being transferred through all active channels belonging to a certain one or more groups of active channels, with a goal of instant common bandwidth, required for transmission of all signals incoming into given position, not exceeding available instant bandwidth, resulting in improved control over packet data transfer networks.
EFFECT: increased efficiency.
4 cl, 4 dwg
FIELD: controlling data exchange between mobile subscribers in burst-oriented mobile communication network.
SUBSTANCE: proposed method is characterized in that each subscriber is serviced depending on his actual location in mobile communication system at definite Serving GPRS Support Node (SGSN) of the latter; mobile-subscriber communication terminal-to-terminal connections within mobile communication network are controlled by respective network control node so that address register with all addresses assigned to mobile subscribers serviced by network control node is stored in network control node; target address assigned to data bursts is read out of arriving burst data in network control node and compared by means of search function with address register; if address register holds target address, data bursts are processed within mobile communication network and further transferred by means of network control node only; in absence of target address in address register, data bursts are passed from network control node to other node (GGSN) of mobile communication network.
EFFECT: optimized routing of burst data.
9 cl, 1 dwg
FIELD: priority burst data transfer at quality-of-service level.
SUBSTANCE: proposed invention relates to method, network, boundary center, and server for limiting traffic in burst-oriented network at quality-of-service level without establishing connections. Admissibility checks are used to check for admissibility of network input and output. Proposed admissibility checks provide for checking if resources meeting requirements for transferring priority-class group of data bursts are available in network. Provision is made for eliminating bottlenecks in using resources, especially during network input and output. In this way data transfer is ensured at desired level of quality-of-service (QOS) parameter.
EFFECT: enhanced reliability of burst data transfer at desired quality-of-service level.
20 cl, 4 dwg
FIELD: wireless communication systems.
SUBSTANCE: in accordance to method, traffic indication counter is incremented each time when a data packet is transferred from buffer. When number of transferred packets becomes equal to or exceeds threshold number, traffic indication message is generated, containing size of buffer window, which is transferred to base station controller. Traffic indication message may be generated and transferred at each threshold time interval independently from number of transferred data packets to guarantee the fact, that traffic indication messages are transferred at each predetermined time interval. Traffic control system may be created containing traffic generation counter module, adjusted for outputting renewed number of transferred data packets. System contains module for monitoring buffer window size, which determines buffer window size and message generation module, which generates traffic indication message, containing buffer window size.
EFFECT: improved control over data traffic.
4 cl, 4 dwg
FIELD: data packet filtration.
SUBSTANCE: in accordance to invention, a operation of a set of filters is paused; operation of input or removal of filter instance in a set of filters is performed in such a way, that data transfer may be continued by at least one connected set of protocols; set of filters is activated. Set of filters is connected to one or more sets of protocols, which function in exchange channels between computer and network. Filtration operations, connected to filter instances, may be bypassed on basis of direction of data flow, flow of control commands and packet parameters.
EFFECT: efficient filtration of data packets with possible change of filtration operations while saving network resources and processing resources.
10 cl, 6 dwg
FIELD: wireless communication systems, in particular, system and method for decreasing losses during data transfer, when damage occurs in communication line or unit.
SUBSTANCE: invention suggests system and method for decreasing data loss in wireless networks, as a result of failures in one or several wireless communication lines or due to damage of intermediate connecting unit, while wireless network contains at least one intermediate unit (15), having internal buffer (71) for continuous buffering of data, transferred from source unit (11) to destination unit (21), and sets up alternative route for bypassing damaged unit. Lost data packets are transferred again in certain position in response to receipt of error message, denoting damaged unit, or in response to repeatedly transferred request, as a result of data failures in wireless communication network, while intermediate units, without such internal buffering, execute transfer of requests and messages to higher positioned units with internal buffering.
EFFECT: decreased data loss.
5 cl, 8 dwg
FIELD: the invention refers to radio communication and may be used in mobile communication.
SUBSTANCE: the technical result is in providing possibility of more effective use of storage devices. For this on the transmitting side transmitting data packets at least of two flows (1,2) are designated with a corresponding indicator individual for the data flow and/or service for securing possibility of their attribution at the receiving side to corresponding data flow (1,2). Besides at the transmitting side a sequence number is added to the data packets of each flow (1,2) for providing possibility to restore in the radio set the initial sequence of the data packets flow(1,2). This provides advantage consisting of the fact that the flows (1,2) of several services may use the common process HARQ. In such a way it is possible to reduce at the receiving side the volume of storage device required for realization of the process HARQ.
EFFECT: provides more effective use of storage devices.
13 cl, 3 dwg
FIELD: radio communications.
SUBSTANCE: in known transmitter with code division of channels (IS-95 standard), new elements are additionally introduced, namely: transmitter circuit additionally features P orthogonal code generators, (N+K+J+1) signal spectrum generator, P channel signal adders, channel group signal adder, and each information channels features a divider, second encoder, interlacing device and second symbol compressor, each call channel features divider, second coder and interlacing device and appropriate connections between them for creation of new signal code structure and of a form of code compression of channels.
EFFECT: more than 3 times increased spectral efficiency of communication system.
FIELD: wireless communication systems.
SUBSTANCE: proposed relay station designed for use in wireless communication systems incorporates wireless communication device enabling interaction with base stations which transfer data for controlling relay station gain and output power. Return communication line gain or power of relay station installed in communication system is automatically adjusted due to controlling capacity of return communication line incorporated in built-in wireless communication device. Wireless communication device installed in relay station and signals supplied from return communication line of built-in device to relay-station return communication line provide for maintaining relay station gain at relatively constant level. Built-in wireless communication devices can be also periodically turned on for sending calls and controlling return communication line capacity for calibrating or re-calibrating relay station gain. Such relay station incorporates provision for its automatic power level control.
EFFECT: provision for automatically setting return line gain or relay station power.
42 cl, 10 dwg, 1 tbl
FIELD: extended-code communication systems incorporating provision for warning about multicodes.
SUBSTANCE: proposed method for compact submission of signals warning about multicodes includes evaluation of multicode quantity and code displacement, generation of code word incorporating code group indicator and displacement indicator; code word provides for compact submission of signals warning about multicodes; mentioned code word is compiled and can be decoded dispensing with reference table.
EFFECT: reduced amount of service data transmitted in the course of sending warning signal.
20 cl, 5 dwg
FIELD: radio engineering, possible use in digital communication networks, when it is necessary to bypass a faulty network element and restore system of clock network synchronization.
SUBSTANCE: device consists of first, second connection blocks, first, second and third electronic commutators, automatic detectors, AND elements, NOT elements. Device is installed at inputs and outputs of primary equipment of "B" unit to provide bypassing, blocking of faulty primary equipment of network unit "B" and fast switching to operational sets of backup equipment of network unit "B'" with preservation of clock network synchronization. On failure of primary equipment of network unit "B", distribution and multiplexing of streams between incidental units "A" and "C" with preservation of clock network synchronization are realized due to disconnection by first, second and third electronic commutators of primary equipment of network unit "B" from communication network and from secondary set-point generator, and connection of backup equipment of network unit "B'" instead.
EFFECT: creation of automatic device for bypassing communication networks, realizing bypassing, blocking of faulty primary equipment of network unit of digital communication network, and also fast switching to operational sets of backup equipment of network unit with preservation of clock network synchronization.
FIELD: the invention refers to the field of radio technique and may be used for transmission of information with the aid of signals with orthogonal frequency multiplexing.
SUBSTANCE: the technical result is in increasing accuracy of synchronization of signals with orthogonal frequency multiplexing and that in its turn provides reduction of error possibility at reception of these signals even in such complex propagation conditions as shot-wave range channels. For this in the receiving set of the known equipment two memory blocks, two commutators, a maximum choice selection block, a meter and a time intervals calculation block are introduced.
EFFECT: increases accuracy of signals.
FIELD: electric communications via fiber-optic lines, possible use for ultra compression of large groups of short and long distance lines by wave lengths.
SUBSTANCE: packing device is made with spiral optical route on one or several repeatedly used prisms. Optical automatic telephone station is made of multi-line devices, multiple optical switches and connectors, interconnected by multipoint inter-cascade screens with optical commutation of channels of compressed lines.
EFFECT: decreased amount of equipment and increased speed of operation.
2 cl, 10 dwg, 15 tbl
FIELD: radio engineering, possible use in radio communication systems with adjustment of working frequency.
SUBSTANCE: in accordance to method introduced into transmitting part of known radio communication system are first register, generator of synchronization signal and generator of synchronization impulses, and into receiving part - limiter, second broadband filter, analog-digital converter, time compression block, digital-analog converter, synchronized filter, amplitude detector, block for comparison to threshold, second register and generator of combinations of information symbols in a packet.
EFFECT: increased resistance to influence of intentional interference.
FIELD: communication systems ; devices for synchronizing base station with aid of signals transferred from mobile station communicating also with base station being synchronized.
SUBSTANCE: driven base station is synchronized with base station through messages transferred from mobile station and received by mobile station either in service area affording soft transmission between driving base station and driven one or within the range enabling mobile station to support communications with driven base station. When mobile station communicates both with driving base station and with driven one, driving base station measures signal passage delay time in forward and reverse directions between mobile station and driving base station. Driving station transfers bus selector code used by mobile station over return communication line to driven base station. The latter locks on signal from mobile station and determines time of signal arrival from mobile station. Then driven base station executes this operation and evaluates delay time in signal transmission from mobile station to driven base station. These measurement results and estimates are used by driven base station to find error incorporated in system time of driven base station.
EFFECT: reduced station search time.
56 cl, 9 dwg, 1 tbl
FIELD: engineering of systems for providing access to multimedia products for consumer through connections of digital client line xDSL.
SUBSTANCE: method includes usage of at least one multiplexer of access to digital client line DSLAM with permitted broadcasting, made for authentication of at least one user locally, and for permitting access to at least one channel in base network, while client information of each user is recorded in DSLAM, which maintains xDSL connection, leading to house of client and each DSLAM supports broadcasting protocols, request is received in DSLAM with permitting of broadcasting at least to one channel from client, where receiving DSLAM locally services xDSL connection for client, information stored in receiving DSLAM is used to determine whether access of client to channel being requested is sanctioned, and if client has sanctioned access to channel being requested, then DSLAM is used to provide such access.
EFFECT: increased speed of switching between channels of audio-visual information through xDSL connection with confirmation in access unit.
5 cl, 9 dwg
FIELD: electric radio engineering, possible use for increasing quality of electric communication, especially in multi-frequency wireless communication systems.
SUBSTANCE: method for decreasing ratio of peak signal power to its average ratio PAPR in multi-frequency communication systems, in which information symbol is formed by a set of signals, each one of which is centered on one of multiple bearing frequencies, is characterized by the fact that in transmitter a set of bearing frequencies is divided on several sections - subsets of bearing frequencies, information symbol, PAPR value of which does not exceed required threshold PAPR0, is transferred via all carriers, information symbol, value PAPR of which exceeds required threshold PAPR0 is divided on several sub-symbol sections, while number of these sections equals number of sub-carrier subsets, each section of symbol is transferred same as full symbol, wherein data are only transferred on one group of carriers, while other carriers are not modulated, in receiver, arrival of incomplete symbol is identified by analysis of amplitudes of carrier signals, which are not modulated in case of symbol division. Multi-frequency communication system is characterized by construction of receiver and transmitter, adapted for execution of operations, included in proposed method.
EFFECT: preservation of high channel capacity with simplified correction procedure.
2 cl, 12 dwg
FIELD: communications engineering, in particular, systems for communication inside vehicles or in close proximity of vehicles.
SUBSTANCE: in accordance to one of variants, system for transferring information from first position inside or in close proximity of a vehicle to second position inside a vehicle, where vehicle has a conductive metallic structure, containing a remote block, containing first communication equipment, provided with sensor, exciter block, containing second communication equipment and excitation means, connected due to conductivity to metallic structure of vehicle, while first communication equipment receives information in first position, realizes modulation of signal using this information, receives electromagnetic field in metallic structure of vehicle through sensor, excitation device performs extraction of current at the expense of conductivity from metallic structure of vehicle and production of current signal, second communication equipment receives that signal, demodulates and transfers information to second position, in such a way realizing transfer of information from first position to second position by wireless communication method.
EFFECT: creation of excitation system and excitation methods for providing communication inside or in close proximity of vehicles.
8 cl, 18 dwg