Method for access to channel in system based on wireless lan and device for this

FIELD: radio engineering, communication.

SUBSTANCE: method comprises the steps of: receiving a frame containing a SIGNAL-A field (SIG-A); and determining whether or not the wireless medium is idle using the time interval indicated by the extended interframe interval (EIFS), before performing transmission in the wireless environment. If the frame has a cyclic redundancy code (CRC) failure when receiving the SIG-A field, the EIFS is set equal to the sum of aSIFSTime, the interframe interval of the distributed coordination function (DIFS) and ACKTxTime, where aSIFSTime is the nominal value of the short interframe interval (SIFS), and the ACKTxTime is the time required to transmit the ACK frame, and if the frame does not have a CRC failure when receiving the SIG-A field, the EIFS is reduced to DIFS.

EFFECT: to provide regulation and management of the extended inter-frame interval in a system based on a wireless LAN to support the protection of response frames and access to the channel.

11 cl, 15 dwg, 8 tbl

 



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to wireless communication systems. The invention describes an arrangement method of wireless communication, which involves connection established by the device to an access point, detection of location of the access point, determination of accuracy of the determined location of the access point, and as a result of determination of the fact that more accurate location of the access point is found in comparison to the earlier saved location of the access point, update of information on the detected location in a data base of locations in the device.

EFFECT: improvement of accurate determination of location.

20 cl, 8 dwg

FIELD: radio engineering, communication.

SUBSTANCE: radio communication devices (1, 2) communicate using a plurality of frequency bands. The radio communication device (1) transmits a control message to the radio communication device (2) using a first frequency band, said message including identification information indicating a second frequency band different from the first frequency band, during a random access procedure. The radio communication device (2) receives the control message from the radio communication device (1) using the first frequency band and transmits data using the second frequency band with said identification information included in the control message.

EFFECT: efficient control of use of a plurality of frequency bands.

4 cl, 31 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to wireless communication networks and is intended to detect the physical change of the exterior of a network node module which is part of a network node. According to the invention the network node module (19) comprises a movement detector (20) configured to detect movement between a male element and a corresponding female element, where the network node module comprises one of the elements and both elements are required for obtaining an operative network node, and a control unit (24) configured to generate an indication of a physical change of the network node module based on the detected movement.

EFFECT: detecting physical change of the exterior of a network node module which is part of a network node.

23 cl, 13 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a system including a basic station and a retransmission station connected to the basic station. A mobile communication system includes at least one upper radio station (1) and the retransmission station (2). The retransmission station (2) performs a radio relay operation between the lower radio station (3) and the upper radio station (1). The retransmission station (2) has a possibility, when the connection to the first upper radio station included in connection configuration information pointing at the upper radio station to which the retransmission station (2) shall be connected, is unsuccessful, of being connected to the second upper radio station differing from the first upper radio station and notifying the network (4 and 5) of notification information through the second upper radio station; with that, the notification information specifies that connection to the first upper radio station is unsuccessful.

EFFECT: technical result consists in the simplification of adjustment of information on the configuration of connection to the above system based on connection configuration information.

22 cl, 23 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to a wide-band wireless access system. A method for a mobile station to make a choice of the range in a wide-band wireless access system involves the following stages: transfer of the first code of a preamble of selection of the range for requesting of selection of the range to the basic station through the first possibility of selection of the range of the first frame, and if the first message is received from the basic station before the timer elapses, which indicates time limit, with that, the first message including a response to the first code of the preamble of selection of the range is transmitted during a limited period of time, and it is determined, whether a successful request for selection of the ranged was made by means of the first message or not.

EFFECT: effective selection of a range.

9 cl, 13 dwg, 3 tbl

FIELD: electricity.

SUBSTANCE: invention is referred to methods and structures in wireless communication system that supports aggregation of carrier frequencies and containing radio base station configured to translate system information in at least two cells. Method for user equipment contains receipt stage (410) of configuration information from the radio base station for aggregation of at least two cells, identification stage (420) of the first of at least two cells based on the configuration rule setting that at least the first cell out of two has status differing from status of the remaining cells, and reading stage (430) for translated system information only in the identified cell. The method may also contain stage of compliance with conditions (440) for one parameter or more parameters received from the read system information.

EFFECT: provision of a flexible solution to use system information translated in the multitude of cells in wireless communication system that supports aggregation of carrier frequencies.

20 cl, 13 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication systems. The volume of wireless communication between a relay station and a base station is reduced in order to improve the quality of communication, which is the technical result. A wireless communication system includes a relay station, a first radio base station, second radio base stations and a mobile station. The relay station is wirelessly connected to the first radio base station and communicates with the second radio base stations through the first radio base station. When the relay station communicates with the second radio base stations, the relay station requests the first radio base station to communicate with the second radio base stations for the relay station. The requested first radio base station communicates with the second radio base stations for the relay station and transmits the communication result to the relay station.

EFFECT: high quality of communication.

4 cl, 19 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio communication. The technical result is that the invention enables a time division duplex (TDD) terminal and a frequency division duplex (FDD) terminal to perform TDD and FDD carrier aggregation. Provided is a carrier aggregation method which includes: a mobile terminal which establishes a connection receives carrier aggregation control information from a base station, which contains carrier frequency identifiers, and configuration information of a radio communication device of receiver carrier frequency for downlink carrier aggregation; the mobile terminal acknowledges the receiver carrier frequency according to the carrier frequency identifiers and configuration information of the radio communication means.

EFFECT: invention also discloses a corresponding base station, a corresponding mobile terminal and a carrier aggregation system consisting of a base station and a mobile terminal.

16 cl, 3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to acoustic authentication devices for recording in a wireless network. An unauthorised wireless device emits an audible acoustic secret code of unique identification (for example a personal identification number (PIN code)). In some implementations the user hears an acoustic code and enters it manually through the user interface for recording in the network. In other implementations a network authorisation device automatically receives the acoustic code and checks the code authenticity. If authenticity check is successful, the wireless device is recorded in the wireless network.

EFFECT: technical result consists in the improvement of ergonomic recording in a protected wireless network.

15 cl, 3 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to portable field tools for maintenance. A tool (52, 102) comprises, without limitation, a module (121) of protocol of wireless communication of a technological process configured with the possibility to maintain communication in accordance with the protocol of wireless communication of technological process. The tool (52, 102) also includes a display (120) and an input device (122). A controller (130) is connected with a module of protocol of wireless communication of technological process, the display (120) and the input device (122). The controller (130) is configured with the possibility of processing a map on a display (120), showing the position of the portable field device (52, 102) relative to at least one facility, such as a field device (22, 23, 104). The controller (130) is additionally configured as capable to determine position of the portable field device (52, 102) for maintenance by means of triangulation using wireless communication of technological process with a row of available field devices (104) with fixed position.

EFFECT: more accurate determination of location of a field device due to mutual use of GPS and triangulation.

32 cl, 8 dwg

FIELD: physics; communications.

SUBSTANCE: description is given of a method and device for switching wireless terminal channels. For this, several communication channels with different physical characteristics are supported in the cell of the base station. Each wireless terminal controls several channels and evaluates several channels at the same time, such that, there can be fast switching between channels. Information on the quality of the channel is sent from each wireless terminal to the base station. The wireless terminal or base station selects the channel, based on the evaluated quality of the channel. By supporting several channels and through periodical changes in channels in different implementation alternatives, the time taken before the wireless terminal finds good or suitable channel conditions is minimised, even if the wireless terminal changes position. Several antennae are used at the base station for simultaneous support of several channels, for example, through control of the directional pattern of the antennae.

EFFECT: reduced delays before wireless terminal finds suitable channel conditions.

66 cl, 26 dwg

FIELD: physics; communications.

SUBSTANCE: during different set conditions providing source of sound for company service information as substitutive audio signal for call return, receiver can determine whether source of sound for service information for subscriber or set time interval is provided for. Present invention provides for a method and device for obtaining substitutive repeating audio signal for call return based on choice or successively in accordance with a preset condition.

EFFECT: provision for several substitutive audio signals for call return.

26 cl, 6 dwg

FIELD: physics; communications.

SUBSTANCE: method consists of the following stages: reception of request for channel access from user terminal. Reception of the user terminal can be one of several active user terminals. The transmission cycle duration is determined as a result of reception of a request for channel access. The arrival time of data to the cycle is determined for the user terminal. The arrival time of data to the user terminal is set, so as to designate the channel for the user terminal, starting from the time of arrival of data.

EFFECT: reduced probability of collisions during transfer of data from different users.

31 cl, 8 dwg

FIELD: information technologies.

SUBSTANCE: method for assignment of band channel with adaptive modulation and coding (AMC) to subscriber stations (SS) is realised in wireless communication system, which separates full range of frequencies into multiple subcarrier bands, every of which represents set from previously specified quantity of subranges, every of which represents set of previously specified quantity of adjacent subcarriers. Method comprises the following stages: necessity in use of band channel with AMC is detected; quality of reception is measured in frequency bands; list of frequency bands with high quality of reception is formed; request is sent for assignment of band channel with AMC as well as foresaid list to base station (BS); response is received to mentioned request from BS; in compliance with response, changeover is done in SS in condition of use of band channel with AMC.

EFFECT: creation of flexible system that provides possibility for subscriber stations with proper condition of channel to realise high-speed communication with high throughput.

61 cl, 7 dwg, 3 tbl

FIELD: information technologies.

SUBSTANCE: service center (SZ) for transmission of information content should not know or define number of person who initiates loading, and sole connection (TKV) of communication from communication device (TKG) to service center (SZ) does not require making another communication contact, at that information content is requested in the first communication session (SI1) with the first notice (SN1) about service from service center (SZ), and is delivered from service center (SZ) in the second communication session (SI2) with at least one notice (SN2) about service.

EFFECT: reduction of power inputs and use of hardware resources.

18 cl, 5 dwg

FIELD: information technologies.

SUBSTANCE: system comprises subsystem of all-channel signaling processing, data base subsystem, services processing subsystem and operational maintenance subsystem, at that all subsystems are connected to communication network and accordingly realise information exchange; at that all-channel signaling processing subsystem performs function of OKC-7 processing; data base subsystem is used for storage of user data; services processing subsystem comprises one or more modules for processing of home location register services; operational maintenance subsystem comprises operational maintenance server, services acceptance terminal and close-range terminal of operational maintenance.

EFFECT: provision of possibility to service user of several types of networks via system of home location register.

5 cl, 2 dwg

FIELD: information technologies.

SUBSTANCE: in one version of realisation access network may assign group identifier (group ID) to every of pilot-signals associated with sector, for instance, on the basis of pilot-signals coverage areas, and transmit pilot-signals with appropriate group ID. PN shift may be used as group ID. Access terminal may group accepted pilot-signals in one or more pilot-signals group according to their group ID, and select representative pilot-signals from every group of pilot-signals for transmission of message about pilot-signal level. Access terminal may also use grouping of pilot-signals for efficient control of sets.

EFFECT: provision of efficient and reliable communication systems with multiple carriers.

32 cl, 13 dwg

FIELD: information technologies.

SUBSTANCE: wireless communication network comprises different base stations and subscriber stations. Every base station provides services of broadcasting content transfer to subscriber stations via communication channels of one of the following types: 1) common channel used by multiple subscriber stations, 2) individual channels, every of which is separated for use by separate subscriber station. In response to one or several preset changes of condition, i.e. change of number of subscriber stations that request the program, change of transmission power level used by base station, or in case of other change of network condition, communication channel type used for provisioning of broadcasting content to one or several subscriber stations is switched over.

EFFECT: delivery of broadcasting content with use of errors and individual channels combination, depending on whatever is more preferable in available circumstances.

5 cl, 28 dwg

FIELD: information technologies.

SUBSTANCE: one version of realisation comprises base station, which controls channel of speed indicator, decodes speed indicator channel with application of likelihood maximum decoder and determines availability of packet in speed indicator channel by comparison of probability to threshold, and analyses frame validity in packet-oriented channel on the basis of availability and content of packets accepted in speed indicator channel.

EFFECT: possibility to identify packets in speed indicator channel, high probability of good and bad frames identification in speed indicator channel and corresponding nonperiodical data transfer channel.

43 cl, 5 dwg

FIELD: information technologies.

SUBSTANCE: method and device are provided for provisioning of one or more communication services of point-point set type, such as multimedia service of broadcasting/multicasting (MBMS), to one or more mobile terminals, or subscriber devices (AA). When one or more mobile terminals are moved to new zone of mobile communication system controlled by other network component, after connection to service, information is transmitted between network elements by method.

EFFECT: facilitation of continuous service reception by mobile terminals that moved, preserving network resources and increasing efficiency of mobile communication system.

95 cl, 10 dwg

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