RussianPatents.com
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Method and apparatus for transmitting uplink data and control information in wireless mobile communication system supporting multiple transmitting antennae and multiple receiving antennae (mimo). RU patent 2519903. |
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FIELD: radio engineering, communication. SUBSTANCE: invention relates to a wireless mobile communication system and is intended to improve system performance by reducing signalling overhead. The method comprises steps of: setting a rank of uplink control information to a rank of uplink data; multiplexing a first control information item output from the control information with the data; channel interleaving the multiplexed output with control information other than the first control information item from said control information; and transmitting the interleaved signal. EFFECT: invention discloses a method of transmitting uplink data and control information in a wireless mobile communication system that supports multiple transmitting antennae and multiple receiving antennae (MIMO). 14 cl, 18 dwg
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Method and associated device for maintaining precoding channel coherence in communication network / 2494541 During precoding, channel coherence and system capacity are taken into account. A base station adjusts phase and/or amplitude of a precoding matrix corresponding to each precoded unit to maintain coherence of associated information of the entire precoding channel. The associated information of the precoding channel includes, for example, channel status information (CSI) or eigenvalue matrix of the precoding channel. Further, a mobile terminal performs channel estimation based on reference signals of multiple precoded units, thereby eliminating the limitation in prior art that a mobile terminal can perform channel estimation only within one or more resource blocks limited by a precoding granularity. |
Method for calibration and beam formation in radio communication system / 2492573 Radio communication method includes periodic calibration in each calibration interval to obtain a Node B calibration vector, wherein periodic calibration involves selecting a group of user equipment UE for calibration, and groups of UE are selected based on channel quality indicators (CQI) received from said UE; and forming a beam pattern for at least one UE in each calibration interval and applying said calibration vector, obtained for said calibration interval in which periodic calibration involves, in each calibration interval, calculation of at least one initial calibration vector for each UE in the selected group, and calculation of a Node B calibration vector based on the initial calibration vectors for all UE in the selected group. |
Antenna virtualisation in wireless communication environment / 2491722 Set of physical transmit antennae can be divided into a plurality of groups of physical transmit antennae. Further, a precoding vector for a particular group of physical transmit antennae from the plurality of groups of physical transmit antennae can be formulated. Furthermore, the particular group of physical transmit antennae can form a particular virtual antenna. By way of another example, another precoding vector for another group of physical transmit antennae from the plurality of groups of physical transmit antennae can be formulated, and the other group of physical transmit antennae can form another virtual antenna. The precoding vector can be applied to a signal for transmission over the particular virtual antenna, and the other precoding vector can be applied to another signal for transmission over the other virtual antenna. |
Method and apparatus for transmitting correction code in wireless communication system / 2487477 Invention discloses a method and an apparatus for transmitting a correction code in a wireless communication system. A base station (BS) generates a correction code sequence for each of a plurality of antennae and transmits the correction code sequence to user equipment for each antenna. The location of a subcarrier to which each correction code sequence is mapped is determined based on a frequency reuse factor (FRF). |
Uplink open-loop spatial multiplexing in wireless communication / 2487476 Precoders are cycled according to a precoder sequence for each data symbol transmission. When the last precoder is selected the cycle can begin again, a new precoder sequence can be received or defined. A precoder sequence related to a subset of precoders present in a wireless device is defined sequentially, cyclically shifted according to an identifier or one or more communication parameters, randomly, pseudo-randomly according to an identifier or one or more communication parameters. In addition, the precoder sequence can be utilised to select a precoder for one or more retransmissions. Such cycling of precoders can increase transmission diversity. |
Adaptive compression of feedback channel based on second order channel statistics / 2478258 Method involves determining individual statistics for a plurality of channel tap coefficients of a communication channel between a transmitting station and a receiving terminal; and individually quantising said plurality of channel tap coefficients at corresponding quantisation bit rates which are determined based on said statistics to generate quantised channel tap coefficients, wherein the total number of bits allocated to said plurality of channel tap coefficients is fixed; and transmitting said quantised channel tap coefficients from the receiving terminal to the transmitting station. |
Reference signal design for lte a / 2474049 Invention discloses systems and methodologies which facilitate creating antenna ports which correspond to two or more groups of user equipment (UE). The present invention can organise two or more groups of user equipment and signal to each of the two or more groups a respective antenna port. The invention can further transmit mapping information, a reference signal or delay related to a linear combination in order to identify antenna ports. Based on such transmitted information, the reference signal can be decoded in order to identify each antenna port. |
Method and apparatus for controlling multi-antenna transmission in wireless communication network / 2474048 Multi-antenna transmission control presented herein involves generating a set of virtual channel realisations in a transmitter (10) which shares the same second-order statistics as the actual channel realisations observed for a targeted receiver (12). By making the control-related quantities of interest at the transmitter (10) depend on the long-term statistics of the channel, the actual channel realisations are not needed for transmission control, e.g., for accurate multiple-input/multiple-output (MIMO) precoding and the related modulation and coding choice. |
Method of and device for transfer of information on antenna configuration / 2468514 Information on antenna configuration and/or a circuit of transfer spreading may be transferred by means of an appropriate display of a physical broadcasting channel to a subframe so that reference signals indicate various configurations of an antenna or a circuit of transfer spreading. Alternatively, masking, such as masking with use of a cyclic excessive code of control, may be applied for provision of information on configuration of an antenna and/or a circuit of transfer spreading. |
Method and apparatus for conveying antenna configuration information via masking / 2467477 Invention relates to interaction between a network entity, such as a base station, and a recipient, such as mobile terminal, and can be used to convey antenna configuration information. The method of providing antenna configuration information via masking involves: selecting a bit mask associated with an antenna configuration and a transmission diversity scheme, the bit mask being selected from a set of bit masks including a first bit mask associated with a single-antenna configuration, a second bit mask associated with a two-antenna configuration, and a third bit mask associated with a four-antenna configuration, wherein selecting the bit mask involves selecting the bit mask from the set of bit masks, the first bit mask having a maximum Hamming distance from the second bit mask; and applying the bit mask associated with the antenna configuration and the transmission diversity scheme to a set of predetermined bits within a plurality of bits. |
Distributed system of intelligent antennas / 2264010 Proposed distributed system of intelligent antennas has N antennas, N radio-frequency transceivers, main frequency band digital signal processor in base station of wireless communication system, feeders, and data bus; N antennas and N radio-frequency transceivers are grouped to obtain a number of radio-frequency transceiver groups disposed at different consistent-reception locations of base station, including different buildings or different floors of one building. |
Spatial-temporal code with non-zero complex weighing for transmission by multiple antennas / 2276463 Method and device provide for expansion of space-time block code N×N' to space-time block code M×M', where M>N, with utilization of leap-like alternation of symbols phase in space-time block code N×N', to make it possible to transfer space-time block code from distributed antennas in amount, exceeding N'. |
High frequency system and method for exchanging packet data / 2286030 Each high frequency ground station contains at least one additional high frequency receiver for "surface to surface" communication and at least one additional "surface to surface" demodulator of one-tone multi-positional phase-manipulated signal, output of which is connected to additional information input of high frequency controller of ground station, and input is connected to output of additional high frequency "surface to surface" receiver, information input of which is connected to common high frequency receiving antenna, while control input is connected to additional control output of high frequency controller of ground station. |
Signal transfer method (variants) and device for realization thereof (variants) / 2289203 Technical result is achieved due to correction of spectrum of copies of information signal being transferred, transferring copies of information signal from each adaptive antenna array in each effective transmission direction, estimating transfer functions of direction transmission channels on basis of pilot signals transferred from each antenna element, on basis of pilot signals for distributed transmission, sent from each adaptive antenna array in each one of effective transmission directions, and also combining two given estimates. |
Method for using generation of polar pattern and distribution during transmission in closed contour in multi-beam antenna system / 2321950 When controlling a multi-beam antenna system for a downstream line of wireless communications, generation of polar pattern and signaling of distribution during transmission in closed contour are combined, each beam signal is adjusted at transmitter on basis of check connection from wireless communication mobile station in such a way, that signals received by wireless communication mobile station may be coherently combined. |
Channel estimation method and radio communication system related to it / 2322759 In accordance to the method, in straight direction, beam is created by a set of antennas, and at least one vector is created for beam generation, subject to application for connection of at least one base station to at least one mobile station, is defined by at least one client station and from at least one client station to at least one base station information is transmitted, which contains information about aforementioned at least one beam generation vector. In accordance to the invention, at least one base station transmits information about beam generation vector used for connection of at least one base station to at least one client station, to at least one client station, on basis of which at least one client station estimates the channel. |
Device and method for frequency-time-space block coding for capacity improvement / 2337483 Invention concerns data transfer, particularly frequency-time-space block coding in a transmitter with three transmitting Tx antennae. Input symbol sequence is transferred by three Tx antennae according to permutation method via selected transmission matrix. |
Spatial processing using control matrices for pseudorandom transmission control in multi-antennae communications system / 2351070 Present invention pertains to communication techniques. The transmitting object carries out spatial processing using control matrices, so that data transmission is held in a set of "effective" channels, formed on the real channel used for transmitting data, and control matrices, used for PRTS. Control matrices can be formed by sampling a base matrix, which can be a Walsh or Fourier matrix. Different combinations of scalars are then chosen, each combination of which consists of at least one scalar, of at least row of the base matrix. Each scalar can be a real or complex value. Different control matrices are formed by multiplying the base matrix by each of the different combinations of scalars. Control matrices are different transpositions of the base matrix. |
Device and method for beams shaping in cdma communication system / 2354050 Invention is related to device and method for beams shaping in telecommunication system of mobile communication CDMA with application of intellectual antennas technology, using specified device and method, multiple fixed beams are shaped in sector, and multiple fixed beams are used to shape traffic channel with narrow beams and common channel with sector beams in one and the same intellectual antenna system, and problem of phases discrepancy is solved in appropriate channels due to differences in time and temperature oscillations without application of complicated correcting technology. Since fixed beams in some area correlate and interact with each other, or considerably weaken due to correlative summation of space vectors of every fixed beam in process of common channels transfer in CDMA system with multiple antennas, then appropriate ratio is established between power of pilot channel and traffic channel in coverage area, and signal-noise ratio is increased for signals received by mobile communication station. As a result of addition of optical transceivers system between system of the main frequency band and system of radio frequency transceivers (TRX), the main frequency band system services more sectors. Radio frequency unit is located in close proximity to antennas, and consumed power is reduced accordingly. |
Mobile communications method, mobile station and base station / 2354053 Separation of transmitting antennas with feedback is applied to special channel of downstream communications line, and separation of transmitting antennas without feedback is applied to control channel of downstream communications line in accordance with high-efficiency method of transmission over upstream communications line. The objective of present invention is to determine how the station with separation during transmission which implements advanced upstream communications line (EUL) should apply separation of transmitting antennas to level 1 confirmation information transmission channels (E-HICH), relative transmission rate channels (E-RGCH) and absolute transmission rate channels (E-AGCH). |
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