公开(公告)号：WO2006017850A3

公开(公告)日：2007-02-01

申请号：PCT/US2005028450

申请日：2005-08-11

Applicant: INTERDIGITAL TECH CORP ,  OZLUTURK FATIH ,  PIETRASKI PHILIP J

Inventor： OZLUTURK FATIH ,  PIETRASKI PHILIP J

IPC: H04B1/06 ,  H04B7/10 ,  H04M1/00

CPC classification number: H04B7/10 ,  H01Q21/29 ,  H01Q25/00 ,  H04B7/04 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/066 ,  H04B7/0691 ,  H04B7/0697

Abstract: The present invention is related to a method and apparatus for reducing antenna correlation between multiple antennas. A transmitter generates at least two beams with a plurality of antennas. The generated beams are spatially separated to point away each other. Therefore, the transmitted signals travel through different channel conditions and arrive at a receiver mutually uncorrelated. The beams may be generated by antennas having different antenna pattern, or by an array antenna. The beams may be polarized differently. The schemes may be implemented on a subcarrier basis in an orthogonal frequency division multiplexing (OFDM) system. Trellis coded mapping may be utilized for adjacent symbols to be mapped to antennas with low correlation.

Abstract translation: 本发明涉及减少多个天线之间的天线相关性的方法和装置。 发射机产生具有多个天线的至少两个波束。 所生成的光束在空间上分离以指向彼此。 因此，所发送的信号通过不同的信道条件传播并且到达接收机相互不相关。 波束可以由具有不同天线图案的天线或阵列天线产生。 梁可以以不同的方式极化。 这些方案可以在正交频分复用（OFDM）系统中的子载波基础上实现。 网格编码映射可以用于相邻符号以被映射到具有低相关性的天线。

公开(公告)号：WO2006062767A3

公开(公告)日：2006-12-07

申请号：PCT/US2005043121

申请日：2005-11-30

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J

Inventor： PIETRASKI PHILIP J

IPC: H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC classification number: H04L25/0228 ,  H04L25/0212

Abstract: A channel estimation apparatus and method is provided for a wireless communication signal received from at least one relatively mobile wireless transmit/receive unit (WTRU). Predetermined filter coefficients having unique index values are stored in a memory device. An index generator matches estimation values of the mobile unit speed and SNR to a particular filter coefficient, and selects a corresponding index value, whereby the memory performs a look up function according to the index value and outputs a filter coefficient vector. The channel estimation of the wireless communication signal is taken from the output of the filter. Alternatively, a set of parallel filters which run continuously are used to produce several channel estimates, from which the final estimate is selected based on the associated lowest mean square error or highest SNR.

Abstract translation: 为从至少一个相对移动无线发射/接收单元（WTRU）接收的无线通信信号提供信道估计装置和方法。 具有唯一索引值的预定滤波器系数被存储在存储装置中。 索引生成器将移动单元速度和SNR的估计值与特定滤波器系数匹配，并选择对应的索引值，由此存储器根据索引值执行查找功能并输出滤波器系数向量。 无线通信信号的信道估计取自滤波器的输出。 或者，使用连续运行的一组并行滤波器来产生几个信道估计，从​​中根据相关的最小均方误差或最高SNR选择最终估计。

公开(公告)号：WO2005079221A3

公开(公告)日：2005-10-27

申请号：PCT/US2005002812

申请日：2005-02-02

Applicant: INTERDIGITAL TECH CORP ,  STERNBERG GREGORY S ,  TSAI YINGMING ,  PIETRASKI PHILIP J

Inventor： STERNBERG GREGORY S ,  TSAI YINGMING ,  PIETRASKI PHILIP J

IPC: H04B7/00 ,  H04B17/40 ,  H04L1/00 ,  H04L1/20

CPC classification number: H04L1/20 ,  H03M13/3738 ,  H03M13/41 ,  H03M13/653 ,  H04L1/0054 ,  H04L1/0072

Abstract: 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.

Abstract translation: 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设备。 HS-SCCH承载经由高速下行链路共享信道（HS-DSCH）接收数据所需的信息。 该设备接收经由多个HS-SCCH发送的消息。 该设备测量经由每个HS-SCCH接收的消息的信道质量。 该设备通过将信道质量与预定阈值进行比较来执行阈值测试。 该装置然后在HS-SCCH中选择具有最佳信道质量的HS-SCCH。

公开(公告)号：WO2008085992A2

公开(公告)日：2008-07-17

申请号：PCT/US2008000294

申请日：2008-01-08

Applicant: INTERDIGITAL TECH CORP ,  YE CHUNXUAN ,  REZNIK ALEXANDER ,  SHAH YOGENDRA C ,  PIETRASKI PHILIP J ,  DIFAZIO ROBERT A

Inventor： YE CHUNXUAN ,  REZNIK ALEXANDER ,  SHAH YOGENDRA C ,  PIETRASKI PHILIP J ,  DIFAZIO ROBERT A

CPC classification number: H04L1/1628 ,  H04L1/1819 ,  H04L1/1845 ,  H04L1/1874 ,  H04L12/1868 ,  H04L47/10 ,  H04L47/14 ,  H04L47/15 ,  H04L2001/0093

Abstract: A method for multicasting a packet begins by providing a buffer for each of two user equipments (UEs) in communication with a base station. A determination is made whether there is a previously unsent packet at the base station. A second determination is made whether both UE buffers are non-empty. A non-empty buffer is flushed if there is no previously unsent packet and if one of the buffers is non-empty. A packet is selected to be transmitted if there is a previously unsent packet or if both buffers are non-empty. The buffers are updated based on feedback received from the UEs.

Abstract translation: 通过为与基站通信的两个用户设备（UE）中的每一个提供缓冲器，开始组播分组的方法。 确定在基站处是否存在先前未发送的分组。 第二确定是否两个UE缓冲器都是非空的。 如果没有先前未发送的数据包，并且其中一个缓冲区不为空，则将刷新非空缓冲区。 如果存在先前未发送的分组或者两个缓冲区都不为空，则选择发送分组。 基于从UE接收的反馈来更新缓冲器。

公开(公告)号：WO2007109040A2

公开(公告)日：2007-09-27

申请号：PCT/US2007006395

申请日：2007-03-14

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J

Inventor： PIETRASKI PHILIP J

CPC classification number: H04L25/03006 ,  H04B1/7093 ,  H04B2201/7071 ,  H04L2025/03535 ,  H04W88/06

Abstract: In a wireless communication system, a method and apparatus switches operating modes of a receiver receiving data and operating in a first mode. The method comprises determining whether a criteria is met to switch the operating mode of the receiver. The operating mode of the receiver is switched from the first mode to a second mode if the criteria is met.

Abstract translation: 在无线通信系统中，方法和装置切换接收数据并以第一模式操作的接收机的操作模式。 该方法包括确定是否满足标准以切换接收机的操作模式。 如果满足标准，则接收机的操作模式从第一模式切换到第二模式。

公开(公告)号：WO2006052398A3

公开(公告)日：2007-05-31

申请号：PCT/US2005037416

申请日：2005-10-19

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J ,  YANG RUI ,  BELURI MIHAELA ,  DEMIR ALPASLAN

Inventor： PIETRASKI PHILIP J ,  YANG RUI ,  BELURI MIHAELA ,  DEMIR ALPASLAN

IPC: H04B1/00 ,  H04L27/06

CPC classification number: H04B1/7097 ,  H04B1/712 ,  H04L25/03248

Abstract: A method and apparatus for estimating and correcting baseband frequency error in a receiver. In one embodiment, an equalizer performs equalization on a sample data stream and generates filter tap values based on the equalization. An estimated frequency error signal is generated based on at least one of the filter tap values. A rotating phasor is generated based on the estimated frequency error signal. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the sample data stream. In another embodiment, a channel estimator performs channel estimation and generates Rake receiver finger weights based on at least one of the finger weights. An estimated frequency error signal is generated based on at least one of the finger weights.

Abstract translation: 一种用于估计和校正接收机中的基带频率误差的方法和装置。 在一个实施例中，均衡器对采样数据流执行均衡，并且基于均衡产生滤波器抽头值。 基于滤波器抽头值中的至少一个产生估计的频率误差信号。 基于估计的频率误差信号产生旋转相量。 将旋转相量信号与样本数据流相乘以校正样本数据流的频率。 在另一个实施例中，信道估计器执行信道估计，并且基于手指权重中的至少一个产生Rake接收机手指权重。 基于手指权重中的至少一个生成估计的频率误差信号。

公开(公告)号：WO2006058219A8

公开(公告)日：2006-08-17

申请号：PCT/US2005042755

申请日：2005-11-23

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J

Inventor： PIETRASKI PHILIP J

IPC: G06F17/30

CPC classification number: G06F17/3087 ,  G06F17/30241

Abstract: A method for embedding location information in a content object created on a content creation device begins by obtaining location information relating to the current location of the content creation device. The content object is created and the location information is embedded into the content object. A method for displaying location information in connection with a content object begins by selecting a content object to view. The embedded location information is extracted from the selected content object. The location information is interpreted to determine user-friendly location information. The user-friendly location information is displayed with the selected content object.

Abstract translation: 用于将位置信息嵌入在内容创建设备上创建的内容对象中的方法开始于获得与内容创建设备的当前位置有关的位置信息。 内容对象被创建并且位置信息被嵌入到内容对象中。 用于显示与内容对象相关的位置信息的方法通过选择要观看的内容对象开始。 嵌入的位置信息是从选定的内容对象中提取的。 位置信息被解释为确定用户友好的位置信息。 用户友好的位置信息与选定的内容对象一起显示。

公开(公告)号：WO2006020434A3

公开(公告)日：2006-07-06

申请号：PCT/US2005027061

申请日：2005-07-29

Applicant: INTERDIGITAL TECH CORP ,  OZLUTURK FATIH ,  PIETRASKI PHILIP J ,  BULTAN AYKUT

Inventor： OZLUTURK FATIH ,  PIETRASKI PHILIP J ,  BULTAN AYKUT

IPC: H04W52/42

CPC classification number: H04W52/262 ,  H04B7/046 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0046 ,  H04L5/006 ,  H04L25/0206 ,  H04W52/42

Abstract: A method and apparatus for radio resources control in a multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system are disclosed. Channel metric is calculated for each of a plurality of transmit antennas. Sub-carriers are allocated to each transmit antenna in accordance with the channel metric of each transmit antenna. Signals are transmitted using the allocated sub-carriers at each antenna. Adaptive modulation and coding and transmit power control of each sub-carrier may be further implemented in accordance with the channel metric. Power control may be implemented per antenna basis or per sub-carrier basis. In performing power control, a subset of transmit antennas may be selected and waterpouring may be applied only to the selected antennas. Waterpouring may be based on SNR instead of channel response.

Abstract translation: 公开了一种用于多输入多输出（MIMO）正交频分多路复用（OFDM）通信系统中的无线电资源控制的方法和设备。 针对多个发射天线中的每一个来计算信道度量。 根据每个发射天线的信道度量将子载波分配给每个发射天线。 信号在每个天线处使用分配的子载波进行传输。 可以根据信道度量进一步实现每个子载波的自适应调制和编码以及发射功率控制。 功率控制可以按照每个天线或每个子载波来实现。 在执行功率控制时，可以选择发射天线的子集并且可以仅将水流施加到所选择的天线。 注水可能基于SNR而不是通道响应。

公开(公告)号：WO2006058219A2

公开(公告)日：2006-06-01

申请号：PCT/US2005042755

申请日：2005-11-23

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J

Inventor： PIETRASKI PHILIP J

IPC: G06F17/30

CPC classification number: G06F17/3087 ,  G06F17/30241

Abstract: A method for embedding location information in a content object created on a content creation device begins by obtaining location information relating to the current location of the content creation device. The content object is created and the location information is embedded into the content object. A method for displaying location information in connection with a content object begins by selecting a content object to view. The embedded location information is extracted from the selected content object. The location information is interpreted to determine user-friendly location information. The user-friendly location information is displayed with the selected content object.

Abstract translation: 通过获取与内容制作装置的当前位置相关的位置信息，开始在内容制作装置上创建的内容对象中嵌入位置信息的方法。 创建内容对象，并将位置信息嵌入到内容对象中。 通过选择要查看的内容对象，开始显示与内容对象相关联的位置信息的方法。 从所选择的内容对象中提取嵌入的位置信息。 位置信息被解释为确定用户友好的位置信息。 用户友好的位置信息与选定的内容对象一起显示。

公开(公告)号：WO2006052406A2

公开(公告)日：2006-05-18

申请号：PCT/US2005037654

申请日：2005-10-18

Applicant: INTERDIGITAL TECH CORP ,  PIETRASKI PHILIP J ,  BELURI MIHAELA

Inventor： PIETRASKI PHILIP J ,  BELURI MIHAELA

IPC: H03H7/30

CPC classification number: H04L25/03038 ,  H04B1/7097 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/03617

Abstract: A method and apparatus generating an error signal and an update vector signal used to generate filter tap coefficients for an equalizer filter residing in an equalizer. The equalizer filter outputs an equalized signal in response to receiving a sample data stream. The error signal is generated by down-sampling the equalized signal, subtracting the equalized signal from a reference signal, and filtering and down-sampling the resulting signal. Simultaneously, the update vector signal is generated by converting scalar samples of the sample data stream to a data vector signal and descrambling, filtering, and down-sampling the data vector signal. A tap coefficients generator is used to generate the filter tap coefficients for updating the equalizer filter based on the error signal and the update vector signal.

Abstract translation: 一种产生误差信号的方法和装置，以及用于产生驻留在均衡器中的均衡器滤波器的滤波器抽头系数的更新矢量信号。 均衡器滤波器响应于接收样本数据流而输出均衡的信号。 通过对均衡信号进行下采样，从参考信号中减去均衡信号，并对结果信号进行滤波和下采样，产生误差信号。 同时，通过将样本数据流的标量样本转换为数据矢量信号并对数据矢量信号进行解扰，滤波和下采样来生成更新矢量信号。 抽头系数发生器用于基于误差信号和更新矢量信号产生用于更新均衡器滤波器的滤波器抽头系数。