专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2007041086A1 MIMO BEAMFORMING-BASED SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
标题翻译：基于MIMO射频的单载波频分多址接入系统
公开(公告)号：WO2007041086A1
公开(公告)日：2007-04-12
申请号：PCT/US2006/037391
申请日：2006-09-25
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , PAN, Jung-Lin , OLESEN, Robert, Lind , TSAI, Yingming
发明人： ZHANG, Guodong , PAN, Jung-Lin , OLESEN, Robert, Lind , TSAI, Yingming
IPC分类号： H04L27/26 , H04L5/02 , H04B7/08
CPC分类号： H04B7/0417 , H04B7/0617 , H04B7/086 , H04L5/023 , H04L25/0248 , H04L27/2601 , H04L27/2614 , H04L27/2647
摘要： A multiple-input multiple-output (MIMO) beamforming-based single carrier frequency division multiple access (SC-FDMA) system is disclosed. At the transmitter, a fast Fourier transform (FFT) is performed on transmission data to generate frequency domain data. The frequency domain transmit data is mapped to assigned subcarriers. An inverse fast Fourier transform (IFFT) is performed on the transmit data mapped to the assigned subcarriers to generate time domain transmit data. The time domain transmit data is transmitted via antennas. At a receiver, an FFT is performed on the received data to generate frequency domain received data. Subcarrier demapping is performed to extract data mapped on the assigned subcarriers. A channel estimator generates a channel matrix which is decomposed into U, D and V H matrices. A channel distortion and interference between transmit and receive antennas are equalized based on the decomposed channel matrices to the extracted frequency domain received data.
摘要翻译：公开了一种基于多输入多输出（MIMO）波束成形的单载波频分多址（SC-FDMA）系统。在发射机上，对传输数据进行快速傅里叶变换（FFT）以产生频域数据。频域发射数据被映射到分配的子载波。对映射到所分配的子载波的发送数据执行快速傅里叶逆变换（IFFT），以生成时域发送数据。时域发送数据通过天线发送。在接收机处，对接收到的数据执行FFT以产生频域接收的数据。执行子载波解映射以提取映射在所分配的子载波上的数据。信道估计器生成分解为U，D和V H H矩阵的信道矩阵。基于分解的信道矩阵到提取的频域接收数据，发送和接收天线之间的信道失真和干扰被均衡。

2. 发明申请

WO2007025003A3 WIRELESS COMMUNICATION METHOD AND APPARATUS FOR SELECTING A SERVING CELL AND NODE-B IN AN SC-FDMA SYSTEM 审中-公开
公开(公告)号：WO2007025003A3
公开(公告)日：2007-03-01
申请号：PCT/US2006/033007
申请日：2006-08-23
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
发明人： ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
IPC分类号： H04J1/00
摘要： A method and apparatus for selecting a serving cell/Node-B in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. For intra-Node-B serving cell selection, a serving Node-B measures channel quality indicators (CQIs) of each subcarrier block in an uplink of each cell controlled by the serving Node-B and selects a new serving cell based on the CQIs. The serving Node-B reports the selected new serving cell to a wireless transmit/receive unit (WTRU). For inter-Node-B serving cell selection, each of a plurality of Node-Bs measures a CQI of each of a plurality of subcarrier blocks in an uplink transmission in each cell controlled by each Node-B and forwards the CQIs to a serving cell selection entity. The serving cell selection entity selects a new serving cell/Node-B based on the CQIs. The serving cell selection entity may be a centralized access gateway, a current serving Node-B or a WTRU.

3. 发明申请

WO2007120907A2 METHOD AND APPARATUS FOR SYNCHRONIZATION IN AN OFDMA EVOLVED UTRA WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于同步的无线通信无线通信系统的方法和装置
公开(公告)号：WO2007120907A2
公开(公告)日：2007-10-25
申请号：PCT/US2007/009372
申请日：2007-04-17
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
发明人： ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
CPC分类号： H04W56/002 , H04J11/00 , H04J11/0069 , H04L5/0007 , H04L5/0016 , H04L5/0023 , H04L5/0048 , H04L27/18 , H04L27/2613 , H04L27/2621 , H04L27/2655 , H04W16/18 , H04W56/00 , H04W72/0446 , H04W92/10
摘要： A method and apparatus for synchronization in an orthogonal frequency division multiple access (OFDMA) evolved universal terrestrial radio access (E-UTRA) system including at least one base station and a plurality of wireless transmit/receive units (WTRUs). A secondary synchronization channel (S-SCH) symbol is generated to include cell-specific information. The S-SCH symbol is mapped to the center of the available bandwidth of the system. In one embodiment, the S-SCH symbol is transmitted on different subcarriers at different sectors in the system. In another embodiment, the S-SCH symbol is transmitted on the same subcarriers at different sectors in the system.
摘要翻译：一种在包括至少一个基站和多个无线发射/接收单元（WTRU）的正交频分多址（OFDMA）演进通用地面无线电接入（E-UTRA）系统中进行同步的方法和装置。生成辅同步信道（S-SCH）符号以包括小区特定信息。 S-SCH符号映射到系统可用带宽的中心。在一个实施例中，S-SCH符号在系统的不同扇区的不同子载波上发送。在另一个实施例中，S-SCH符号在系统中的不同扇区的相同子载波上发送。

4. 发明申请

WO2007075463A2 SYNCHRONIZATION CHANNEL FOR OFDMA BASED EVOLVED UTRA DOWNLINK 审中-公开
标题翻译：基于OFDMA的演化UTRA下行同步信道
公开(公告)号：WO2007075463A2
公开(公告)日：2007-07-05
申请号：PCT/US2006/048008
申请日：2006-12-18
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , OZLUTURK, Fatih , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
发明人： OZLUTURK, Fatih , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
IPC分类号： H04L27/26
CPC分类号： H04L27/2613 , H04B7/2681 , H04J11/0069 , H04J11/0073 , H04L5/0007 , H04L5/005 , H04L5/0053 , H04L5/0064 , H04L27/2636 , H04L27/2655 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04W48/16 , H04W56/00
摘要： A method for performing cell search in an orthogonal frequency division multiple access (OFDMA) based cellular communication network in which a primary synchronization channel (P-SCH), and optionally a secondary synchronization channel (S-SCH), carries cell search information. A downlink signal is received containing P-SCH symbols. The P-SCH symbols are processed to obtain an initial detection of frame timing, orthogonal frequency division multiplexing (OFDM) symbol timing, a cell identifier (ID), a frequency offset, and a cell transmission bandwidth. Optionally, an OFDM symbol timing self-check and error correction is then performed.
摘要翻译：一种用于在基于正交频分多址（OFDMA）的蜂窝通信网络中执行小区搜索的方法，其中主同步信道（P-SCH）和可选的辅同步信道（S-SCH ）携带小区搜索信息。接收到包含P-SCH码元的下行链路信号。对P-SCH符号进行处理以获得帧定时，正交频分复用（OFDM）符号定时，小区标识符（ID），频率偏移和小区传输带宽的初始检测。可选地，然后执行OFDM码元定时自检和纠错。

5. 发明申请

WO2007022014A3 METHOD AND APPARATUS FOR SENDING DOWNLINK CONTROL INFORMATION IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
公开(公告)号：WO2007022014A3
公开(公告)日：2007-02-22
申请号：PCT/US2006/031516
申请日：2006-08-11
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
发明人： ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
IPC分类号： H04B1/44
摘要： A method and apparatus for sending downlink control information in an orthogonal frequency division multiple access (OFDMA) system are disclosed. A Node-B allocates at least one subcarrier block to each of a plurality of wireless transmit/receive units (WTRUs) for transmission of downlink user data via an OFDMA downlink data channel in accordance with a scheduling mode. The Node-B compiles downlink control information based on the scheduling mode. The Node-B sends the downlink control information to the WTRUs via an OFDMA downlink control channel. The WTRUs receive and process the downlink user data based on the downlink control information.

6. 发明申请

WO2007024791A2 METHOD AND APPARATUS FOR ACCESSING AN UPLINK RANDOM ACCESS CHANNEL IN A SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
标题翻译：用于在单载波频分多址接入系统中接入上行随机接入信道的方法和装置
公开(公告)号：WO2007024791A2
公开(公告)日：2007-03-01
申请号：PCT/US2006/032623
申请日：2006-08-22
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
发明人： ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
IPC分类号： H04J1/00
CPC分类号： H04W72/1226 , H04L1/188 , H04L5/0007 , H04L5/0044 , H04L5/006 , H04L5/023 , H04L27/2602 , H04W8/26 , H04W52/08 , H04W52/146 , H04W52/16 , H04W52/248 , H04W52/48 , H04W52/50 , H04W72/02 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W74/004 , H04W74/0833 , H04W74/0866
摘要： A method and apparatus for accessing a contention-based uplink random access channel (RACH) in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. A wireless transmit/receive unit (WTRU) randomly selects a RACH subchannel and a signature among a plurality of available RACH subchannels and signatures. The WTRU transmits a preamble using the selected signature via the selected RACH subchannel at a predetermined or computed transmission power. A base station monitors the RACH to detect the preamble and sends an acquisition indicator (AI) to the WTRU when a signature is detected on the RACH. When receiving a positive acknowledgement, the WTRU sends a message part to the base station. If receiving a negative acknowledgement or no response, the WTRU retransmits the preamble.
摘要翻译：公开了一种在单载波频分多址（SC-FDMA）系统中访问基于竞争的上行随机接入信道（RACH）的方法和装置。无线发射/接收单元（WTRU）在多个可用的RACH子信道和签名中随机选择RACH子信道和签名。 WTRU以预定或计算的传输功率经由所选择的RACH子信道使用所选择的签名来发送前导码。当在RACH上检测到签名时，基站监视RACH以检测前导码，并将捕获指示符（AI）发送到WTRU。当接收到肯定确认时，WTRU向基站发送消息部分。如果接收到否定的确认或没有响应，则WTRU重传前导码。

7. 发明申请

WO2007084482A2 METHODS AND APPARATUS FOR MAPPING AN UPLINK CONTROL CHANNEL TO A PHYSICAL CHANNEL IN A SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
标题翻译：用于将上行链路控制信道映射到单载波频分多址系统中的物理信道的方法和设备
公开(公告)号：WO2007084482A2
公开(公告)日：2007-07-26
申请号：PCT/US2007/001085
申请日：2007-01-16
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , TSAI, Yingming , PAN, Jung-Lin
发明人： ZHANG, Guodong , TSAI, Yingming , PAN, Jung-Lin
IPC分类号： H04L27/26 , H04L5/02
CPC分类号： H04L5/023 , H04L1/0026 , H04L1/1671 , H04L1/1812 , H04L1/1893 , H04W74/0866
摘要： A method and apparatus for mapping an uplink control channel to a physical channel in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. A wireless transmit/receive unit (WTRU) generates control bits to be carried by a control channel. The WTRU maps the control channel to a plurality of subcarriers among subcarriers in a resource block assigned to the WTRU and to at least one long block (LB) in a sub-frame. The control channel includes a data-non-associated control channel and/or a data-associated control channel. The subcarriers mapped to the data-non-associated control channel may be distributed over all, or a fraction of, at least one resource block. The data-non-associated control channel may be mapped to the subcarriers with one or more subcarriers as a basic unit. The mapped subcarriers may be consecutive in frequency domain. The control bits may be multiplexed with data bits within the LB.
摘要翻译：公开了一种用于在单载波频分多址（SC-FDMA）系统中将上行链路控制信道映射到物理信道的方法和设备。无线发射/接收单元（WTRU）产生由控制信道携带的控制比特。 WTRU将控制信道映射到分配给WTRU的资源块中的子载波中的多个子载波以及子帧中的至少一个长块（LB）。控制信道包括数据非关联控制信道和/或数据关联控制信道。映射到数据非关联控制信道的副载波可以分布在至少一个资源块的全部或部分上。数据无关控制信道可以被映射到具有一个或多个副载波的副载波作为基本单元。映射的子载波在频域中可以是连续的。控制位可以与LB内的数据位复用。

8. 发明申请

WO2007081564A3 SCHEDULING CHANNEL QUALITY INDICATOR AND ACKNOWLEDGEMENT/NEGATIVE ACKNOWLEDGEMENT FEEDBACK 审中-公开
公开(公告)号：WO2007081564A3
公开(公告)日：2007-07-19
申请号：PCT/US2006/049435
申请日：2006-12-28
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
发明人： ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
IPC分类号： H04L1/18 , H04L1/16 , H04L1/00
摘要： A method for transmitting feedback by a user equipment in a wireless communication system includes scheduling a non-contention based uplink channel; and transmitting the feedback on the scheduled uplink channel. The feedback can include a channel quality indicator and an acknowledgement/negative acknowledgement for received downlink data. The feedback can be multiplexed is various ways for efficient transmission.

9. 发明申请

WO2007019567A2 METHOD AND APPARATUS FOR INTER-NODE-B MACRO DIVERSITY IN A SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
标题翻译：单载波频分多址接入系统中节点间B大分集的方法与装置
公开(公告)号：WO2007019567A2
公开(公告)日：2007-02-15
申请号：PCT/US2006/031241
申请日：2006-08-08
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
发明人： ZHANG, Guodong , PAN, Jung-Lin , TSAI, Yingming
IPC分类号： H04L12/28
CPC分类号： H04B7/12 , H04B7/022 , H04W28/20 , H04W48/08 , H04W72/04 , H04W72/0406 , H04W72/12 , H04W88/08
摘要： A method and apparatus for inter-Node-B macro diversity in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. A distributed subcarrier block including sufficient number of subcarriers to guarantee frequency diversity is allocated to a wireless transmit/receive unit (WTRU) for uplink transmission. The location of the subcarriers is fixed. The information regarding the assigned distributed subcarrier block is sent to Node-Bs in an active set of the WTRU and the Node-Bs receive and decode uplink transmission based on the information. Alternatively, a subcarrier block (either a distributed subcarrier block or a localized subcarrier block) and a starting seed in a frequency and time hopping sequence is allocated to a WTRU for uplink transmission. The information regarding the assigned subcarrier block and the starting seed is sent to Node-Bs in an active set of the WTRU and the Node-Bs receive and decode uplink transmission based on the information.
摘要翻译：公开了一种用于单载波频分多址（SC-FDMA）系统中的节点间B宏分集的方法和装置。包括足够数量的子载波以保证频率分集的分布式子载波块被分配给用于上行链路传输的无线发射/接收单元（WTRU）。子载波的位置是固定的。关于分配的分布式子载波块的信息被发送到WTRU的有效集合中的节点B，并且基于该信息，节点B接收和解码上行链路传输。或者，频率和跳时序列中的子载波块（分布式子载波块或局部副载波块）和起始种子被分配给WTRU用于上行链路传输。关于分配的子载波块和起始种子的信息被发送到WTRU的有效集合中的节点B，并且基于该信息，节点B接收和解码上行链路传输。

10. 发明申请

WO2006102403A2 ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING CODE DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
标题翻译：正交频分多路复用代码多路访问系统
公开(公告)号：WO2006102403A2
公开(公告)日：2006-09-28
申请号：PCT/US2006/010385
申请日：2006-03-22
申请人： INTERDIGITAL TECHNOLOGY CORPORATION , TSAI, Yingming , ZHANG, Guodong , PAN, Jung-Lin
发明人： TSAI, Yingming , ZHANG, Guodong , PAN, Jung-Lin
IPC分类号： H04K1/10 , H04B1/707
CPC分类号： H04B1/711 , H04L5/026 , H04L2025/03414
摘要： An orthogonal frequency division multiplexing (OFDM)-code division multiple access (CDMA) system is disclosed. The system includes a transmitter and a receiver. At the transmitter, a spreading and subcarrier mapping unit spreads an input data symbol with a complex quadratic sequence code to generate a plurality of chips and maps each chip to one of a plurality of subcarriers. An inverse discrete Fourier transform is performed on the chips mapped to the subcarriers and a cyclic prefix (CP) is inserted to an OFDM frame. A parallel-to-serial converter converts the time-domain data into a serial data stream for transmission. At the receiver, a serial-to-parallel converter converts received data into multiple received data streams and the CP is removed from the received data. A discrete Fourier transform is performed on the received data streams and equalization is performed. A despreader despreads an output of the equalizer to recover the transmitted data.
摘要翻译：公开了一种正交频分复用（OFDM）码分多址（CDMA）系统。该系统包括发射机和接收机。在发射机处，扩展和副载波映射单元利用复数二次序列码扩展输入数据符号，以产生多个码片，并将每个码片映射到多个子载波中的一个。对映射到子载波的芯片执行逆离散傅立叶变换，并且将循环前缀（CP）插入到OFDM帧中。并行到串行转换器将时域数据转换为串行数据流以进行传输。在接收机处，串并转换器将接收的数据转换成多个接收的数据流，并从接收的数据中移除CP。对接收的数据流执行离散付里叶变换，并进行均衡。去扩展器对均衡器的输出进行解扩以恢复发送的数据。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式