公开(公告)号：US07408902B2

公开(公告)日：2008-08-05

申请号：US10775629

申请日：2004-02-10

申请人： Eldad Zeira ,  Guodong Zhang ,  Stephen E. Terry ,  James M. Miller

发明人： Eldad Zeira ,  Guodong Zhang ,  Stephen E. Terry ,  James M. Miller

IPC分类号： H04L12/28 ,  H04J3/16 ,  H04B7/216 ,  H04B17/02 ,  H04Q7/20 ,  H04Q7/00 ,  G01R31/08

CPC分类号： H04W28/0236 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/203 ,  H04L47/22 ,  H04W24/02 ,  H04W28/10 ,  H04W28/22 ,  H04W36/0011

摘要： A wireless communication method and system for controlling the current data bit rate of a radio link (RL) to maintain the quality of the RL. The system includes a core network (CN), a radio network controller (RNC) and at least one wireless transmit/receive unit (WTRU). The RL is established between the RNC and the WTRU. The RNC establishes a guaranteed data bit rate, a maximum data bit rate and a current data bit rate associated with the RL. When the RNC senses an event which indicates that the quality of the RL has substantially deteriorated, the RNC reduces the value of the current data bit rate. Then, in a recovery process, if a similar event does not occur during an established waiting period, the RNC restores the current data bit rate back to the maximum data bit rate.

摘要翻译： 一种用于控制无线电链路（RL）的当前数据比特率以保持RL的质量的无线通信方法和系统。 该系统包括核心网络（CN），无线电网络控制器（RNC）和至少一个无线发射/接收单元（WTRU）。 在RNC和WTRU之间建立RL。 RNC建立与RL相关联的保证数据比特率，最大数据比特率和当前数据比特率。 当RNC感测到指示RL的质量已经显着恶化的事件时，RNC减小当前数据比特率的值。 然后，在恢复处理中，如果在建立的等待期间没有发生类似的事件，则RNC将当前数据比特率恢复到最大数据比特率。

公开(公告)号：US20080043882A1

公开(公告)日：2008-02-21

申请号：US11828146

申请日：2007-07-25

申请人： Guodong Zhang ,  Allan Tsai

发明人： Guodong Zhang ,  Allan Tsai

IPC分类号： H03K9/00

CPC分类号： H04L27/2655 ,  H04B17/21 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675

摘要： The present invention is related to a receiver having a plurality of antennas for receiving and performing hybrid timing and frequency offset on at least one signal that includes at least one synchronization channel (SCH) symbol having a plurality of time domain repetitive blocks. The receiver further includes an auto-correlation unit that outputs an auto-correlation result and the power of the received signal, a coarse timing detection unit that generates a coarse timing metric, a frequency offset estimation unit that generates a coarse frequency offset metric based on the coarse timing metric and the received signal, a frequency offset compensation unit that generates a compensated version of the received signal, and a fine tuning detection unit that generates a fine tuning detection metric based on a sample of the compensated version of the received signal that is cross-correlated with a primary synchronization channel (P-SCH) code sequence.

摘要翻译： 本发明涉及具有多个天线的接收机，用于在包括具有多个时域重复块的至少一个同步信道（SCH）符号的至少一个信号上接收和执行混合定时和频率偏移。 接收机还包括自相关单元，其输出自相关结果和接收信号的功率，产生粗定时度量的粗定时检测单元，产生粗频偏移度量的频偏估计单元，基于 粗略定时度量和接收信号，产生接收信号的补偿版本的频率偏移补偿单元，以及微调检测单元，其基于接收信号的补偿版本的采样生成微调检测度量， 与主同步信道（P-SCH）码序列交叉相关。

公开(公告)号：US20080013516A1

公开(公告)日：2008-01-17

申请号：US11735628

申请日：2007-04-16

申请人： Guodong Zhang ,  Kyle Pan ,  Allan Tsai

发明人： Guodong Zhang ,  Kyle Pan ,  Allan Tsai

IPC分类号： H04B7/216

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： 一种用于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）演进的通用地面无线接入（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符号在系统中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。

公开(公告)号：US20070297386A1

公开(公告)日：2007-12-27

申请号：US11460039

申请日：2006-07-26

申请人： Guodong Zhang ,  Kyle Pan ,  Allan Tsai

发明人： Guodong Zhang ,  Kyle Pan ,  Allan Tsai

IPC分类号： H04B7/208

CPC分类号： H04L5/06 ,  H04W28/24 ,  H04W72/1236 ,  H04W72/1268

摘要： A method and system for scheduling uplink transmissions in a single carrier frequency division multiple access (SC-FDMA) system are disclosed. A Node-B receives a scheduling request from a wireless transmit/receive unit (WTRU). The Node-B selects at least one subcarrier block having a certain bandwidth for the WTRU based on quality of service (QoS) requirement of the WTRU. If the QoS requirement is high, the Node-B selects at least one subcarrier block having a large bandwidth and if the QoS requirement is low, the Node-B selects at least one subcarrier block having a small bandwidth. The Node-B then schedules uplink transmissions in a time domain and/or a frequency domain based on a predetermined factor. The Node-B may perform frequency and/or time hopping in scheduling the uplink transmissions.

摘要翻译： 公开了一种用于在单载波频分多址（SC-FDMA）系统中调度上行链路传输的方法和系统。 节点B从无线发射/接收单元（WTRU）接收调度请求。 基于WTRU的服务质量（QoS）要求，节点B向WTRU选择具有一定带宽的至少一个子载波块。 如果QoS要求较高，则节点B选择至少一个具有大带宽的子载波块，如果QoS要求较低，则节点B选择具有小带宽的至少一个子载波块。 然后，节点B基于预定因子在时域和/或频域中调度上行链路传输。 节点B可以在调度上行链路传输时执行频率和/或时间跳跃。

公开(公告)号：US07307953B2

公开(公告)日：2007-12-11

申请号：US11082273

申请日：2005-03-17

申请人： Guodong Zhang

发明人： Guodong Zhang

IPC分类号： H04L1/00 ,  H04K1/10

CPC分类号： H04L5/023 ,  H04L27/2608

摘要： Sub-carriers are allocated among the plurality of users in the OFDM system based on normalized channel gain values. Then, data bits are allocated for transmission on the allocated sub-carriers based on incremental transmission cost values. The channel gain values and the incremental transmission cost values are computed using a calculated fairness factor for each user in the system.

摘要翻译： 基于归一化的信道增益值，在OFDM系统中的多个用户中分配子载波。 然后，基于增量传输成本值，分配用于在所分配的子载波上进行传输的数据比特。 使用系统中每个用户的计算公平因子来计算通道增益值和增量传输成本值。

公开(公告)号：US20070177729A1

公开(公告)日：2007-08-02

申请号：US11339958

申请日：2006-01-26

申请人： Alexander Reznik ,  Akinlolu Kumoluyi ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Gregory Sternberg ,  Yogendra Shah ,  Alain Charles Briancon ,  Chunxuan Ye

发明人： Alexander Reznik ,  Akinlolu Kumoluyi ,  Guodong Zhang ,  Prabhakar Chitrapu ,  Gregory Sternberg ,  Yogendra Shah ,  Alain Charles Briancon ,  Chunxuan Ye

IPC分类号： H04L9/00

CPC分类号： H04K1/00 ,  H04L9/0858 ,  H04L9/0875 ,  H04L9/12 ,  H04L25/0202 ,  H04L25/0224 ,  H04L2209/80 ,  H04W12/04

摘要： A method and apparatus is used for generating a perfectly random secret key between two or more transceivers in a wireless communication network. In a point-to-point system, both transceivers produce an estimate of the channel impulse response (CIR) based on the received radio signal. The CIR estimation is synchronized and may include error correction and detection. A long secret key of bits is generated from a digitized version of the CIR estimate, from which a perfectly secret encryption key is derived by privacy amplification.

摘要翻译： 一种方法和装置用于在无线通信网络中的两个或多个收发器之间生成完全随机的秘密密钥。 在点对点系统中，两个收发器基于所接收的无线电信号产生信道脉冲响应（CIR）的估计。 CIR估计是同步的，并且可以包括纠错和检测。 从CIR估计的数字化版本产生比特的长秘密密钥，通过隐私放大从其中导出完全秘密的加密密钥。

公开(公告)号：US20070140106A1

公开(公告)日：2007-06-21

申请号：US11611510

申请日：2006-12-15

申请人： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan ,  Fatih Ozluturk

发明人： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan ,  Fatih Ozluturk

IPC分类号： H04J11/00 ,  H04J3/06

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）和可选地的辅同步信道（S-SCH）携带小区搜索信息。 接收包含P-SCH符号的下行链路信号。 处理P-SCH符号以获得帧定时，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，执行OFDM符号定时自检和纠错。

公开(公告)号：US07215655B2

公开(公告)日：2007-05-08

申请号：US11019489

申请日：2004-12-22

申请人： Guodong Zhang ,  Stephen E. Terry ,  Stephen G. Dick

发明人： Guodong Zhang ,  Stephen E. Terry ,  Stephen G. Dick

IPC分类号： H04B7/216

CPC分类号： H04W72/02 ,  H04W52/146 ,  H04W52/226 ,  H04W52/262 ,  H04W52/267 ,  H04W52/286 ,  H04W52/346 ,  H04W52/60

摘要： A method for selecting a transport format combination (TFC) in a wireless transmit/receive unit (WTRU) is disclosed. The WTRU is configured to process more than one coded composite transport channel (CCTrCH) for uplink transmission. The WTRU estimates a transmit power for each of a plurality of available TFCs and selects a TFC for each CCTrCH such that the sum of the estimated WTRU transmit power for selected TFCs is within a maximum WTRU transmit power.

摘要翻译： 公开了一种在无线发射/接收单元（WTRU）中选择传输格式组合（TFC）的方法。 WTRU被配置为处理用于上行链路传输的多于一个编码的复合传输信道（CCTrCH）。 WTRU估计多个可用TFC中的每一个的发射功率，并为每个CCTrCH选择TFC，使得所选TFC的所估计的WTRU传输功率之和在最大WTRU传输功率之内。

公开(公告)号：US20070064665A1

公开(公告)日：2007-03-22

申请号：US11507712

申请日：2006-08-21

申请人： Guodong Zhang ,  Jung-Lin Pan ,  Yingming Tsai

发明人： Guodong Zhang ,  Jung-Lin Pan ,  Yingming Tsai

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。

公开(公告)号：US20070060142A1

公开(公告)日：2007-03-15

申请号：US11471402

申请日：2006-06-19

申请人： Alexander Reznik ,  Edward Hepler ,  Guodong Zhang ,  Harry Smith ,  Peter Wang ,  Renuka Racha ,  Robert Gazda ,  Stephen Terry

发明人： Alexander Reznik ,  Edward Hepler ,  Guodong Zhang ,  Harry Smith ,  Peter Wang ,  Renuka Racha ,  Robert Gazda ,  Stephen Terry

IPC分类号： H04Q7/20

CPC分类号： H04W72/0406 ,  H04L1/1812 ,  H04L1/1854 ,  H04L1/1887 ,  H04L1/1896

摘要： A method and apparatus for efficient operation of an enhanced dedicated channel (E-DCH) are disclosed. A physical layer processing includes computation of various control parameters followed by actual processing of the data to be transmitted. In accordance with the present invention, the computation of the control parameters is performed asynchronously from the associated data operation. A medium access control (MAC) layer provides information needed for computation of the control parameters to the physical layer as early as possible, while the data is being processed in parallel. The provided data includes a hybrid automatic repeat request (H-ARQ) profile, a transport block size, power offset, or the like. By sending this data to the physical layer before MAC-e processing is complete, the latency constraint can be significantly relaxed.

摘要翻译： 公开了一种用于增强专用信道（E-DCH）的有效操作的方法和装置。 物理层处理包括各种控制参数的计算，随后实际处理要发送的数据。 根据本发明，控制参数的计算是从关联的数据操作中异步执行的。 介质访问控制（MAC）层在数据被并行处理的同时尽可能早地向物理层提供控制参数的计算所需的信息。 提供的数据包括混合自动重传请求（H-ARQ）简档，传输块大小，功率偏移等。 通过在MAC-e处理完成之前将该数据发送到物理层，可以显着放宽等待时间约束。