Patent application number | Description | Published |
20090252334 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; and mapping the secondary synchronization signal that includes the scrambled first short sequence and the scrambled second short sequence to a frequency domain. | 10-08-2009 |
20090252335 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence and a fourth scrambling sequence determined by the second short sequence; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; scrambling the second short sequence with the first scrambling sequence and scrambling the first short sequence with the second scrambling sequence and the fourth scrambling sequence; and mapping the secondary synchronization signal that includes the first short sequence scrambled with the first scrambling sequence, the second short sequence scrambled with the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled by the second scrambling sequence and the fourth scrambling sequence to a frequency domain. | 10-08-2009 |
20090252336 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by a short sequence group-a wireless communication system uses a plurality of short sequences and the plurality of short sequences are grouped into a plurality of short sequence group-to which the first short sequence is assigned; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; and mapping the secondary synchronization signal that includes the scrambled first short sequence and the scrambled second short sequence to a frequency domain. | 10-08-2009 |
20100067500 | METHOD AND APPARATUS FOR CREATING COMMON PHYSICAL CHANNEL - The present invention relates to a common channel generating method and device in a downlink. Receiving performance by the mobile station is improved by efficiently allocating the resource and generating the common channel in the downlink. Also, transmission diversity applied to the number of transmit antennas of the base station and the common channel can be easily detected, thereby acquiring the mobile station's initial process. | 03-18-2010 |
20100157917 | RESOURCE ALLOCATION MAPPING APPARATUS AND METHOD FOR TRANSMITTING CSRS, AND CSRS TRANSMITTING APPARATUS AND METHOD - Provided are a resource allocation mapping apparatus and method for transmitting CSRS, the resource allocation mapping method includes calculating subcarrier indexes to allocate same subcarrier index to base stations that have same remainder when a base-station index, which classifies the base stations, is divided by a constant; and mapping a resource allocation of the CSRS for the each base station using the calculated subcarrier indexes. | 06-24-2010 |
20100159939 | BIT CALCULATION METHOD AND APPARATUS FOR PDSCH TRANSMISSION - Provided is a bit calculation method, which accurately and easily calculates how many bits are transmitted by codeword per PDSCH in advance before a modulator performs modulation by TTI unit on a PCH or a DL-SCH transferred by a TrCH encoder, in a base-station modulator applied to an LTE-advanced system. Accordingly, the bit calculation method enables smooth data transmission, and easily checks data transmission error. | 06-24-2010 |
20110142232 | SYSTEM AND METHOD FOR EFFECTIVE SCRAMBLING OR DESCRAMBLING - Provided is an scrambling or descrambling method and apparatus. The scrambling system includes a data stream generating unit to generate data streams, a scrambling linear feedback shift register (LFSR) group to calculate a sequence output with respect to each of the generated data streams, and a scrambling processing unit to perform scrambling of the generated data streams based on the calculated sequence outputs. The descrambling system includes a data stream generating unit to generate scrambled data streams using scrambled data, a descrambling LFSR group to calculate a sequence output of each of the generated scrambled data streams, and a descrambling processing unit to perform descrambling of the scrambled data streams using the calculated sequence outputs. | 06-16-2011 |
20120093255 | DATA TRANSMITTER AND METHOD FOR FORMING SYMBOL THEREOF - Provided is a data transmission device and a symbol generation method of the same. A data processing unit of a data transmission device according to an embodiment of the present invention accesses a memory device for reading another data block while symbols for one data block are generated. | 04-19-2012 |
20130003979 | APPARATUS AND METHOD FOR GENERATING MULTIPLE OUTPUT SEQUENCE - Provided are an apparatus and method for generating a multiple output sequence. The apparatus includes an update unit configured to update a first shift register having k stages by inputting a value to the first shift register at every clock, a transfer unit configured to simultaneously transfer, at every clock, output values output from the first shift register to k stages of a second shift register respectively and output values output from k stages of the second shift register to k stages of a third shift register having the k stages respectively, and a multiple output generator configured to generate a multiple output sequence by outputting values of the k stages of the third shift register at every clock. | 01-03-2013 |
20130100902 | GENERATING DOWNLINK FRAME AND SEARCHING FOR CELL - A method is provided for searching for a cell in a mobile station. The method includes receiving a downlink frame including a primary synchronization signal and a secondary synchronization signal. The secondary synchronization signal contains cell identity group information and the primary synchronization signal contains cell identity information within a cell identity group. The method also includes searching for a cell using the cell identity group information in the secondary synchronization signal and the cell identity information in the primary synchronization sign. | 04-25-2013 |