会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 11. 发明申请
    • METHOD AND APPARATUS FOR INTER-NODE-B MACRO DIVERSITY IN A SC-FDMA SYSTEM
    • 方法和装置在SC-FDMA系统中的内部节点B宏分集
    • WO2007019567A3
    • 2007-05-31
    • PCT/US2006031241
    • 2006-08-08
    • INTERDIGITAL TECH CORPZHANG GUODONGPAN JUNG-LINTSAI YINGMING
    • ZHANG GUODONGPAN JUNG-LINTSAI YINGMING
    • H04B7/208H04W28/20H04W48/08H04W72/04H04W72/12H04W88/08
    • H04B7/12H04B7/022H04W28/20H04W48/08H04W72/04H04W72/0406H04W72/12H04W88/08
    • 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.
    • 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。
    • 13. 发明申请
    • WIRELESS COMMUNICATION METHOD AND APPARATUS FOR SELECTING CELLS IN AN OFDMA SYSTEM
    • 用于在OFDMA系统中选择细胞的无线通信方法和装置
    • WO2007024950A3
    • 2009-04-23
    • PCT/US2006032922
    • 2006-08-23
    • INTERDIGITAL TECH CORPZHANG GUODONGPAN JUNG-LINTSAI YINGMING
    • ZHANG GUODONGPAN JUNG-LINTSAI YINGMING
    • H04L27/2601H04B7/26H04W36/08H04W36/30
    • A wireless communication method and apparatus for selecting cells in an orthogonal frequency division multiple access (OFDMA) system are disclosed. A wireless transmit/receive unit (WTRU) measures a downlink path loss of a current serving cell and at least one other cell. The WTRU determines whether a path loss difference between the serving cell and the other cell is below a threshold. If the path loss difference is below the threshold, the WTRU measures a channel quality indicator (CQI) for each of the plurality of subcarrier blocks in the downlink of the current serving cell and the other cell, respectively. The WTRU reports the CQIs to a serving Node-B which selects a new cell based on the CQIs. Alternatively, a centralized access gateway (aGW) may select the new serving cell/Node-B, or the cell selection decision made by the serving Node-B may be forwarded to another Node-B via the centralized aGW.
    • 公开了一种用于在正交频分多址(OFDMA)系统中选择小区的无线通信方法和装置。 无线发射/接收单元(WTRU)测量当前服务小区和至少一个其他小区的下行链路路径损耗。 WTRU确定服务小区和另一小区之间的路径损耗差是否低于阈值。 如果路径损耗差低于阈值,则WTRU分别针对当前服务小区和另一个小区的下行链路中的多个子载波块中的每一个分别测量信道质量指示符(CQI)。 WTRU向基于CQI选择新小区的服务节点B报告CQI。 或者,集中接入网关(aGW)可以选择新的服务小区/节点B,或者由服务节点B做出的小区选择决定可以经由集中式aGW被转发到另一节点B。
    • 14. 发明申请
    • HYBRID ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM AND METHOD
    • 混合正交频分多址访问系统及方法
    • WO2006116003A3
    • 2007-10-04
    • PCT/US2006014947
    • 2006-04-20
    • INTERDIGITAL TECH CORPZHANG GUODONGTSAI YINGMINGPAN JUNG-LIN
    • ZHANG GUODONGTSAI YINGMINGPAN JUNG-LIN
    • H04B1/00H04L27/28
    • H04L5/0007H04L5/0016H04L5/0037H04L5/0044H04L5/005H04L5/0073H04L27/2601H04L27/2647
    • A hybrid orthogonal frequency division multiple access (OFDMA) system including a transmitter 100 and a receiver 200 IF disclosed. The transmitter 100 includes a first spread OFDMA subassembly 130, a first non-spread OFDMA subassembly 140 and a f irst common subassembly 150. The f irst spread OFDMA subassembly 130 spreads input data 101 and maps the spread data 103 to a first group of subcarriers 105. The first non-spread OFDMA subassembly 140 maps input data 111 to a second group of subcarriers 115. The first common subassembly 150 transmits the input data mapped to the first and second group of subcarriers using OFDMA. The receiver includes a second spread OFDMA subassembly 230, a second non-spread OFDMA subassembly 240 and a second common subassembly 250. The second common subassembly 250 processes received data to recover data mapped to the subcarriers using OFDMA. The second spread OFDMA subassembly 230 recovers the first input data by separating user data in a code domain and the second non-spread OFDMA subassembly 240 recovers the second input data.
    • 包括发射机100和接收机200I的混合正交频分多址(OFDMA)系统。 发射机100包括第一扩展OFDMA子组件130,第一非扩展OFDMA子组件140和第一公共子组件150.第一扩展OFDMA子组件130扩展输入数据101,并将扩展数据103映射到第一组副载波105 第一非扩展OFDMA子组件140将输入数据111映射到第二组子载波115.第一公共子组件150使用OFDMA发送映射到第一和第二子载波组的输入数据。 接收机包括第二扩展OFDMA子组件230,第二非扩展OFDMA子组件240和第二公共子组件250.第二公共子组件250处理接收到的数据以恢复使用OFDMA映射到子载波的数据。 第二扩展OFDMA子组件230通过分离代码域中的用户数据并且第二非扩展OFDMA子组件240恢复第二输入数据来恢复第一输入数据。
    • 15. 发明申请
    • FREQUENCY DOMAIN JOINT DETECTION FOR WIRELESS COMMUNICATION SYSTEMS
    • 无线通信系统的频域联合检测
    • WO2006132848A3
    • 2007-05-24
    • PCT/US2006020750
    • 2006-05-31
    • INTERDIGITAL TECH CORPPAN JUNG-LINTSAI YINGMINGZHANG GUODONG
    • PAN JUNG-LINTSAI YINGMINGZHANG GUODONG
    • H04K1/10
    • H04L25/03159H04B1/71055H04L5/026H04L25/03331H04L2025/03414
    • A method and apparatus for frequency domain joint detection for multicamer code division multiple access (MC-CDMA) and spread orthogonal frequency division multiple access (OFDMA) systems are disclosed The apparatus includes a receiver (150) having a frequency domain (156) joint detector (160), whereby channel distortion and data symbols are jointly equalized and detected by the frequency domain joint detector in a frequency domain Users of the data symbols may be assigned all or a subset of subcamers with variable spreading factor codes Alternatively, the subset of subcarriers may be further divided into multiple partitions and the frequency domain joint detection may be performed on the subcarriers in the partition The users are assigned a spreading code which may be a Hadamard code a spread complex quadratic sequence (SCQS) code or anv type of orthogonal soreading code.
    • 公开了一种用于多频码分多址(MC-CDMA)和扩展正交频分多址(OFDMA)系统的频域联合检测的方法和装置。该装置包括:接收机(150),具有频域(156)联合检测器 (160),由此信道失真和数据符号由频域联合检测器在频域中共同均衡和检测。数据符号的用户可以被分配具有可变扩频因子码的全部或一个子集的子集。或者,副载波子集 可以进一步划分为多个分区,并且可以在分区中的子载波上执行频域联合检测。向用户分配扩展码,该扩展码可以是Hadamard码,扩展复数二次序(SCQS)码或正交网络类型 码。
    • 16. 发明申请
    • METHOD AND APPARATUS FOR GENERATING FEEDBACK INFORMATION FOR TRANSMIT POWER CONTROL IN A MULTIPLE-INPUT MULTIPLE-OUTPUT WIRELESS COMMUNICATION SYSTEM
    • 用于在多输入多输出无线通信系统中生成发送功率控制的反馈信息的方法和装置
    • WO2006138021A3
    • 2007-03-08
    • PCT/US2006019895
    • 2006-05-23
    • INTERDIGITAL TECH CORPPAN JUNG-LINOLESEN ROBERT LINDTSAI YINGMING
    • PAN JUNG-LINOLESEN ROBERT LINDTSAI YINGMING
    • H04L23/02
    • H01Q3/2605
    • The present invention is related to a method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.
    • 本发明涉及一种用于在多输入多输出(MIMO)无线通信系统中产生用于发射功率控制的反馈信息的方法和装置。 发射机和接收机都包括用于传输和接收的多个天线。 发射机包括功率分配单元,用于基于从接收机接收的反馈来控制发射功率。 接收机包括信道估计器和奇异值分解(SVD)单元。 信道估计器从从发射机接收的信号中生成信道矩阵,并且SVD单元将信道矩阵分解为D,U和V矩阵。 接收机将基于SVD单元的输出产生的反馈发送到发射机。 反馈可以是特征值,发射功率电平或功率控制位或命令之一。 可以实现用于基于信道条件选择其中的一个的混合方案。
    • 17. 发明申请
    • THREE-DIMENSIONAL CONTROL CHANNEL BEAMS
    • 三维控制通道
    • WO2005120096A3
    • 2007-04-12
    • PCT/US2005017609
    • 2005-05-20
    • INTERDIGITAL TECH CORPGOLDBERG STEVEN JEFFREYOZLUTURK FATIHPAN JUNG-LINTSAI YINGMING
    • GOLDBERG STEVEN JEFFREYOZLUTURK FATIHPAN JUNG-LINTSAI YINGMING
    • H04M1/00H04W16/24H04W16/28
    • H04W16/28H04W16/24
    • A wireless communication system and method generates and shapes one or more three-dimensional control channel beams for transmitting and receiving signals. Each three-dimensional beam is directed to cover a particular coverage area and beam forming is utilized to adjust bore sight and beam width of the three-dimensional beam in both azimuth and elevation, and the three-dimensional control channel beam is identified. In another embodiment, changes in hot-zones or hot-spots, (i.e., designated high volume user coverage areas), are managed by a network cell base station having at least one antenna. Each of a plurality of wireless transmit/receive units (WTRUs) served by the base station use a formed beam based on one or more beam characteristics. When the coverage area is changed, the base station instructs at least one of the WTRUs to change its beam characteristics such that it forms a return beam concentrated on the antenna of the base station.
    • 无线通信系统和方法产生并形成用于发送和接收信号的一个或多个三维控制信道波束。 每个三维光束被引导以覆盖特定的覆盖区域,并且利用光束成形来调节三维光束在方位角和仰角中的视野和光束宽度,并且识别三维控制信道光束。 在另一个实施例中,热区或热点(即,指定的大容量用户覆盖区域)的变化由具有至少一个天线的网络小区基站管理。 由基站服务的多个无线发射/接收单元(WTRU)中的每一个基于一个或多个波束特性使用形成的波束。 当覆盖区域改变时,基站指示至少一个WTRU改变其波束特性,使得它形成集中在基站的天线上的返回波束。