Inter-frequency handover for multiple antenna wireless transmit/receive units
    1.
    发明申请
    Inter-frequency handover for multiple antenna wireless transmit/receive units 审中-公开
    多天线无线发射/接收单元的频间切换

    公开(公告)号:US20060286945A1

    公开(公告)日:2006-12-21

    申请号:US11156359

    申请日:2005-06-17

    IPC分类号: H04B1/02 H04B7/02

    CPC分类号: H04W36/0094 H04B7/0868

    摘要: A method and an apparatus for a Wireless Transmit/receive Unit (WTRU) to perform inter-frequency measurements and inter-frequency soft handover from an originating Base Station (BS) operating at a first frequency to a destination BS operating at a second frequency. The WTRU has at least two antennas, where each antenna initially receiving at the first frequency. The method of the invention performs inter-frequency measurements of the channel on the second frequency using at least one of the antennas that were used for performing data reception on the first frequency. The invention includes a method and an apparatus for performing inter-frequency handover. The inter-frequency handover includes soft handover and hard handover.

    摘要翻译: 一种用于无线发射/接收单元(WTRU)的方法和装置,用于执行从在第一频率工作的发端基站(BS)到以第二频率工作的目的地BS的频间测量和频间软切换。 WTRU具有至少两个天线,其中每个天线最初以第一频率接收。 本发明的方法使用用于在第一频率上执行数据接收的天线中的至少一个来执行第二频率上的信道的频率间测量。 本发明包括一种执行频间切换的方法和装置。 频间切换包括软切换和硬切换。

    METHOD AND SYSTEM FOR GENERATING A SECRET KEY FROM JOINT RANDOMNESS
    2.
    发明申请
    METHOD AND SYSTEM FOR GENERATING A SECRET KEY FROM JOINT RANDOMNESS 有权
    从联合随机产生秘密钥匙的方法和系统

    公开(公告)号:US20070165845A1

    公开(公告)日:2007-07-19

    申请号:US11612671

    申请日:2006-12-19

    IPC分类号: H04L9/30

    摘要: A method and system for generating a secret key from joint randomness shared by wireless transmit/receive units (WTRUs) are disclosed. A first WTRU and a second WTRU perform channel estimation to generate a sampled channel impulse response (CIR) on a channel between the first WTRU and the second WTRU. The first WTRU generates a set of bits from the sampled CIR and generates a secret key and a syndrome, (or parity bits), from the set of bits. The first WTRU sends the syndrome, (or parity bits), to the second WTRU. The second WTRU reconstructs the set of bits from the syndrome, (or parity bits), and its own sampled CIR, and generates the secret key from the reconstructed set of bits.

    摘要翻译: 公开了一种由无线发射/接收单元(WTRU)共享的联合随机生成秘密密钥的方法和系统。 第一WTRU和第二WTRU执行信道估计,以在第一WTRU和第二WTRU之间的信道上生成采样信道脉冲响应(CIR)。 第一WTRU从采样的CIR生成一组比特,并从该比特组生成秘密密钥和校正子(或奇偶校验位)。 第一WTRU将该校验子(或奇偶校验位)发送到第二WTRU。 第二WTRU从校验子(或奇偶校验位)重构比特组,并且自己采样CIR,并从重构的比特组生成秘密密钥。

    Wireless communication method and apparatus for efficiently providing channel quality information to a Node-B downlink scheduler
    6.
    发明申请
    Wireless communication method and apparatus for efficiently providing channel quality information to a Node-B downlink scheduler 审中-公开
    用于向节点B下行链路调度器高效地提供信道质量信息的无线通信方法和装置

    公开(公告)号:US20050100038A1

    公开(公告)日:2005-05-12

    申请号:US10946028

    申请日:2004-09-21

    摘要: A method and apparatus for obtaining channel quality estimates for a downlink scheduler located in a Node-B which communicates with a plurality of wireless transmit/receive units (WTRUs). The Node-B signals a scheduled WTRU, via a high speed shared control channel (HS-SCCH) carrying valid transport format resource combination (TFRC) information, indicating that a high speed downlink shared channel (HS-DSCH) transmission will be arriving. The Node-B also indicates the upcoming arrival of the HS-DSCH transmission by signaling at least one non-scheduled WTRU via a HS-SCCH carrying invalid TFRC information. The Node-B transmits the HS-DSCH transmission to the scheduled WTRU. The non-scheduled WTRU monitors a subset of the HS-DSCH transmission and, when invalid TFRC information is detected, determines a CQI without decoding HS-DSCH data. Otherwise, the results of cyclic redundancy check (CRC), always a non-acknowledgement (NACK) message, is signaled along with the CQI to the Node-B.

    摘要翻译: 一种用于获取位于与多个无线发射/接收单元(WTRU)通信的节点B中的下行链路调度器的信道质量估计的方法和装置。 节点B通过承载有效的传输格式资源组合(TFRC)信息的高速共享控制信道(HS-SCCH)向指示高速下行链路共享信道(HS-DSCH)传输将到达的调度的WTRU发送信号。 节点B还通过经由携带无效TFRC信息的HS-SCCH信令至少一个非调度WTRU来指示即将到来的HS-DSCH传输。 节点B将HS-DSCH传输发送到调度的WTRU。 非调度WTRU监视HS-DSCH传输的子集,并且当检测到无效TFRC信息时,确定CQI而不对HS-DSCH数据进行解码。 否则,循环冗余校验(CRC)的结果始终是非确认(NACK)消息,与CQI一起被发送到节点B。

    Method and apparatus for providing fast detection of a high speed shared control channel
    8.
    发明申请
    Method and apparatus for providing fast detection of a high speed shared control channel 有权
    用于提供高速共享控制信道的快速检测的方法和装置

    公开(公告)号:US20050180344A1

    公开(公告)日:2005-08-18

    申请号:US10903389

    申请日:2004-07-30

    摘要: A method and apparatus for providing fast detection of a high speed shared control channel (HS-SCCH). The HS-SCCH carries information necessary for receiving data via a high speed downlink shared channel (HS-DSCH). The apparatus receives messages transmitted via a plurality of HS-SCCHs. The apparatus measures a channel quality for the messages received via each HS-SCCH. The apparatus performs a threshold test by comparing the channel quality with a predetermined threshold. The apparatus then selects a HS-SCCH having the best channel quality among the HS-SCCHs.

    摘要翻译: 一种用于提供高速共享控制信道(HS-SCCH)的快速检测的方法和装置。 HS-SCCH携带通过高速下行链路共享信道(HS-DSCH)接收数据所需的信息。 该装置接收经由​​多个HS-SCCH发送的消息。 该装置测量经由每个HS-SCCH接收的消息的信道质量。 该装置通过将信道质量与预定阈值进行比较来执行阈值测试。 然后,该装置选择HS-SCCH中具有最佳信道质量的HS-SCCH。

    Method and apparatus for estimating and reporting the quality of a wireless communication channel
    9.
    发明申请
    Method and apparatus for estimating and reporting the quality of a wireless communication channel 失效
    用于估计和报告无线通信信道质量的方法和装置

    公开(公告)号:US20050094596A1

    公开(公告)日:2005-05-05

    申请号:US10940079

    申请日:2004-09-14

    摘要: A method and apparatus for estimating and reporting the quality of a wireless communication channel between a wireless transmit/receive unit (WTRU) and a Node-B. A modulated signal is received from the Node-B over the communication channel and a channel estimation is performed on the modulated signal to provide a channel estimate. In one embodiment, the modulated signal is demodulated based on the channel estimate to provide a demodulated signal and a signal-to-interference (SIR) estimate based on the demodulated signal is obtained. The quality of the communication channel is estimated based on at least the SIR estimate. In an alternate embodiment, a SIR estimate based on the channel estimate is obtained. The quality of the communication channel is estimated based on the SIR estimate and additional information including at least one of delay spread, transmit power and WTRU velocity information.

    摘要翻译: 一种用于估计和报告无线发射/接收单元(WTRU)和节点B之间的无线通信信道的质量的方法和装置。 通过通信信道从节点B接收调制信号,并对调制信号执行信道估计以提供信道估计。 在一个实施例中,基于信道估计来解调调制信号以提供解调信号,并且获得基于解调信号的信号干扰(SIR)估计。 至少基于SIR估计来估计通信信道的质量。 在替代实施例中,获得基于信道估计的SIR估计。 基于SIR估计和包括延迟扩展,发射功率和WTRU速度信息中的至少一个的附加信息来估计通信信道的质量。

    Detection, avoidance and/or correction of problematic puncturing patterns in parity bit streams used when implementing turbo codes
    10.
    发明申请
    Detection, avoidance and/or correction of problematic puncturing patterns in parity bit streams used when implementing turbo codes 有权
    在实现turbo码时使用的奇偶校验比特流中的有问题的删截模式的检测,避免和/或校正

    公开(公告)号:US20080046800A1

    公开(公告)日:2008-02-21

    申请号:US11974381

    申请日:2007-10-12

    IPC分类号: H03M13/23

    摘要: Detecting, avoiding and/or correcting problematic puncturing patterns in parity bit streams used when implementing punctured Turbo codes is achieved without having to avoid desirable code rates. This enables identification/avoidance of regions of relatively poor Turbo code performance. Forward error correction comprising Turbo coding and puncturing achieves a smooth functional relationship between any measure of performance and the effective coding rate resulting from combining the lower rate code generated by the Turbo encoder with puncturing of the parity bits. In one embodiment, methods to correct/avoid degradations due to Turbo coding are implemented by puncturing interactions when two or more stages of rate matching are employed.

    摘要翻译: 检测,避免和/或纠正实现穿孔Turbo码时使用的奇偶校验比特流中有问题的打孔模式,而无需避免所需的代码率。 这使得能够识别/避免相对较差的Turbo码性能的区域。 包括Turbo编码和穿孔的前向纠错实现了任何性能测量与由Turbo编码器产生的较低速率码与奇偶校验位的打孔所产生的有效编码速率之间的平滑功能关系。 在一个实施例中,用于校正/避免由Turbo编码引起的劣化的方法通过采用两个或更多个速率匹配阶段时的穿孔交互实现。