Patent application number | Description | Published |
20100309993 | Method and Apparatus for Sequencing ZC Sequences of a Random Access Channel - The present invention provides a method and apparatus for sequencing ZC sequences of a random access channel. The method comprises: setting α as a logical index of each ZC sequence, and u as a physical index of said each ZC sequence, wherein 1≦u≦N−1, 0≦α≦N−2, and N is the length of said each ZC sequence; establishing a mapping relationship between the logical index and the physical index: u=N/2 is taken as a symmetry axis, α is mapped to u in a manner of longitudinal symmetry, and on the upper side of the symmetry axis, u monotonously decreases or increases, while on the lower side of the symmetry axis, u monotonously increases or decreases. This method ensures that the PRACHs of the UEs using different sequences in a same cell have similar coverage, thus the flexibility of cell planning is increased. | 12-09-2010 |
20110002401 | RANDOM ACCESS CHANNEL CONSTRUCTING METHOD AND EQUIPMENT FOR WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for constructing a random access channel of a wireless communication system, in which the method includes the following steps: setting a length of a preamble; setting a length of a cyclic prefix according to the length of the preamble; and setting a random access channel structure consisting of the preamble and the cyclic prefix. The random access channel designed by the method can be flexibly set to transmit in the UpPTS, and can satisfy the demand of a small coverage scenario in a better manner. | 01-06-2011 |
20110019752 | METHOD FOR MAPPING PHYSICAL RANDOM ACCESS CHANNELS - A method for mapping physical random access channel (PRACHs) is provided in the present invention, wherein W PRACHs have the same time domain location and the serial number of each PRACH is w=0, 1, 2, . . . , W−1. The method includes: mapping the PRACHs with the odd w numbers from high frequency to low frequency, or from low frequency to high frequency in a usable frequency band, mapping the PRACHs with the even w numbers from low frequency to high frequency, or from high frequency to low frequency in the usable frequency band. One PRACH occupies 6 continuous resource blocks in the frequency domain, and the frequency bands occupied by the two adjacent PRACHs in the frequency domain do not overlap, furthermore the same mapping process is used for each version number r. The PRACHs which need to be processed by the same station could be distributed evenly in the time domain, and at the same time the inter-cell interference of the second type PRACH could be reduced to the greatest extent through the present invention. | 01-27-2011 |
20110021227 | SYSTEM AND A METHOD FOR INDICATING AN UPLINK RESOURCE - A method for indicating an uplink resource is provided, including that: when a base station side transmits an uplink resource indication signaling in a downlink subframe, an uplink subframe indication signaling corresponding to the uplink resource indication signaling being transmitted together; and the uplink subframe indication signaling is used for indicating an uplink subframe used by a user side to transmit data according to the uplink resource indication signaling. A system for implementing the method is also provided, which can distinguish a resource indication signaling corresponding to different uplink subframes in the same downlink subframe, and avoid that all the users of different uplink subframes transmit the data in the same resource of the same uplink frame, thereby avoiding mutual interference between the users of the uplink subframes, ensuring system performance and resulting in less signaling overhead. | 01-27-2011 |
20110075703 | FREQUENCY HOPPING METHOD AND BASE STATION FOR DOWNLINK DEDICATED PILOT FREQUENCY - A method for frequency hopping of a downlink dedicated pilot frequency, comprises: for the downlink dedicated pilot frequency, determining a frequency hopping offset corresponding to the downlink dedicated pilot frequency according to a cell identity of a cell to which it pertains (S | 03-31-2011 |
20110103272 | METHOD FOR TRANSMITTING THE PDCCH SIGNAL - The present invention provides a method for transmitting a PDCCH (physical downlink control channel) signal, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k, 2 symbols are fixedly used to transmit the physical downlink control channel, wherein k is a natural number. The present invention further provides another method for transmitting a PDCCH signal. In a TDD Long Term Evolution system, when the number of available resource blocks of the downlink bandwidth in a radio frame is less than or equal to k and the uplink/downlink switching period is 10 ms, the transmitting end selects 2, 3 or 4 symbols to transmit the PDCCH signal in subframe | 05-05-2011 |
20110129033 | METHOD AND APPARATUS FOR TRANSMITTING RANK INDICATION INFORMATION - The present invention discloses a method and apparatus for transmitting rank indication information, in which the method comprises: when rank indication information and a sounding reference signal are transmitted in a same sub-frame, loading the sounding reference signal to a last symbol of a sub-frame, and transmitting the rank indication information and the sounding reference signal. The present invention prevents destruction of orthogonality of codes between PUCCH channels when the rank indication information and the sounding reference signal are transmitted in the same sub-frame, thus the overall performance of the system can be ensured. | 06-02-2011 |
20110249549 | METHOD AND DEVICE FOR SEQUENCING THE ZC SEQUENCES OF THE RACH - A method and device for sequencing the ZC sequences of the RACH is provided, wherein, the method for sequencing the ZC sequences comprises: according to the CM of OPSK, ZC sequences of the RACH are divided into low CM group and high CM group, to make the index of each ZC sequence within the low CM group smaller or larger than the index of each ZC sequence within the high CM group; according to the maximum cell radius or maximum cyclic shift supported by the ZC sequences under a high speed circumstance, the ZC sequences within the low CM group and within the high CM group are respectively divided into S sub-groups using S−1 maximum cyclic shift thresholds; according to the CMs of the ZC sequences, the sequences are sequenced within each sub-group, to make the ZC sequences in adjacent sub-groups within the low CM group and within the high CM group have different sequencing and the ZC sequences in adjacent sub-groups between the low CM group and the high CM group have the same sequencing. | 10-13-2011 |
Patent application number | Description | Published |
20100303168 | Data Transmission Method for Orthogonal Frequency Division Multiplexing System - A data transmission method for orthogonal frequency division multiplexing system, specifically comprises sending M, which is greater than 1, OFDM symbols included in each data transmission unit with different bandwidth, wherein each data transmission unit with different bandwidth sends two kinds of OFDM symbols with different cyclic prefix lengths: OFDM symbols with the long cyclic prefixes and OFDM symbols with the short cyclic prefixes; and the data transmission units with different bandwidths transmit the identical number of OFDM symbols with the long cyclic prefixes and the identical number of the OFDM symbols with the short cyclic prefixes. | 12-02-2010 |
20100329159 | PHYSICAL UPLINK CONTROL SIGNAL TRANSMITTING METHOD FOR TIME DIVISION DUPLEX SYSTEM - A method for transmitting a physical uplink control signal in a time division duplex system, wherein the uplink control signal is more than 2 bits. The method comprises the following steps of: a base station distributing a plurality of uplink channel code resources of a physical uplink control channel (PUCCH) for a user equipment, and making an agreement with the user equipment to transmit different contents represented by the uplink control signal using different uplink channel code resources; the user equipment selecting one or more uplink channel code resources from the distributed uplink channel code resources according to the content of the uplink control signal to be transmitted, and transmitting the uplink control signal on the physical uplink control channel. | 12-30-2010 |
20110026445 | Method for configuring and indicating Physical Random Access Channel PRACH parameters in a Time Division Duplex system - The present invention discloses a method for configuring and indicating physical random access channel parameter in a time division duplex system, suitable for the long term evolution, system, including: the same PRACH configuration set is stored in a base station and a terminal respectively; when performing a PRACH configuration, the terminal inquires the PRACH configuration set according to configuration information to obtain a configuration parameter, and/or the terminal computes to obtain the configuration parameter according to a system parameter. Set by using the method provided by the present invention, the PRACH configuration set can provide enough density types for various PRACH formats in order to meet the requirements of different system loads, and meanwhile can provide enough version types for each combination of format and density, decrease the processing load of the base station, and reduce the inter-cell interference. | 02-03-2011 |
20110032926 | METHOD FOR INTERFERENCE RANDOMIZATION OF PHYSICAL UPLINK CONTROL CHANNEL - A method for interference randomization of physical uplink control channel (PUCCH), which is used in long term evolution (LTE) system, when multiple terminals multiplex PUCCH to transmit uplink control signallings, the difference of index of control channel resource used by any two terminals in the first timeslot of PUCCH is different from the difference of index of control channel resource used by the two terminals in the second timeslot of PUCCH. The invention can realize interference randomization between UEs that multiplex the same PUCCH. | 02-10-2011 |
Patent application number | Description | Published |
20100290439 | METHOD AND DEVICE FOR SENDING INFORMATION IN A PHYSICAL UPLINK CONTROL CHANNEL - The present invention discloses a method and device for sending a message in a physical uplink control channel. The present invention overcomes the problem that an index of the physical uplink control channel corresponding to a ACK/NACK message can not be represented implicitly in prior art by using the known downlink information, which includes an index of the control channel element where control signaling associated with downlink data is located and an index of a sub-frame where the downlink data is located. Therefore, the index of the physical uplink control channel where the ACK/NACK message associated with the downlink data is located can be represented and the ACK/NACK message can be sent in an appropriate physical uplink control channel. | 11-18-2010 |
20100332937 | DISTRIBUTING METHOD FOR PHYSICAL HYBRID ARQ INDICATOR CHANNEL RESOURCES - A method for allocating resources of physical hybrid ARQ indicator channels is disclosed, comprising: a transmitting end dividing evenly all resources of Physical Hybrid ARQ Indicator Channels (PHICHs) to be allocated into a plurality of configured PHICH groups, and then mapping them to sub-carriers of resource groups corresponding to the PHICH groups to transmit signals in the PHICHs through the sub-carriers. The present invention enables Hybrid Automatic Repeat reQuest function to be implemented in a practical system, and also ensures minimum interference between different users and improves the utilization of system resources. | 12-30-2010 |
20120300720 | METHOD, SYSTEM AND APPARATUS FOR DETERMINING PRIORITY OF COMPONENT CARRIER - A method, system and device for determining the priority of a component carrier are disclosed. The method includes: a network control unit and/or a terminal determining the priority of the component carrier according to carrier information about the component carrier. This method, system and device can enable the UE to rapidly select a downlink carrier when the periodic CQI/PMI/RI feedback with respect to the downlink carrier conflict and the UE can be notified with no need of additional signaling or only by using the reserved bit or only by way of a little high layer signaling overhead, the implementation of which is convenient. | 11-29-2012 |
20140369324 | UPLINK SIGNAL SENDING METHOD AND USER EQUIPMENT - An uplink signal sending method applied to a carrier aggregation system, comprises: after configuring more than two timing advances, user equipment rate-matching uplink signals and/or uplink channels between which front-to-back symbol overlap will occur in time domain over different uplink carriers, and then sending the uplink signals and/or uplink channels, or discarding and then sending the uplink signals and/or uplink channels, or sending simultaneously. | 12-18-2014 |
20150295681 | Method and Device for Sending Answer Information - Disclosed are a method and device for sending answer information, wherein, when a frequency division duplex (FDD) and a time division duplex (TDD) aggregate, where a TDD cell serves as a primary serving cell and a FDD cell works as a secondary serving cell, a user equipment (UE) groups downlink subframes of the FDD secondary serving cell, and different downlink subframe groups use different hybrid automatic repeat request (HARQ) timing relationships, determines uplink subframes where HARQ-ACK acknowledgment messages corresponding to physical downlink shared channels (PDSCHs) of the downlink subframe groups are transmitted, and sends the HARQ-ACK messages on the determined uplink subframes. | 10-15-2015 |