公开(公告)号：EP2076989A2

公开(公告)日：2009-07-08

申请号：EP07852460.0

申请日：2007-09-28

Applicant: Interdigital Technology Corporation

Inventor： ZEIRA, Eldad ,  REZNIK, Alexander ,  YANG, Rui ,  PIETRASKI, Philip, J. ,  YANG, Yongwen

IPC: H04L1/00

CPC classification number: H04B7/0456 ,  G06F11/006 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0636 ,  H04B7/0639 ,  H04B7/0652 ,  H04L1/0026 ,  H04L1/0057 ,  H04L1/007 ,  H04L1/0073 ,  H04L1/06 ,  H04L1/1671 ,  H04L65/601 ,  H04L69/40 ,  H04L2025/03802 ,  H04L2209/34

Abstract: A method and apparatus for encoding channel quality indicator (CQI) and precoding control information (PCI) bits are disclosed. Each of input bits, such as CQI bits and/or PCI bits, has a particular significance. The input bits are encoded with a linear block coding. The input bits are provided with an unequal error protection based on the significance of each input bit. The input bits may be duplicated based on the significance of each input bit and equal protection coding may be performed. A generator matrix for the encoding may be generated by elementary operation of conventional basis sequences to provide more protection to a most significant bit (MSB).

公开(公告)号：EP2074740A2

公开(公告)日：2009-07-01

申请号：EP07873446.4

申请日：2007-10-12

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： REZNIK, Alexander ,  BRIANCON, Alain Charles, Louis ,  DODIS, Yevgeniy ,  SHAH, Yogendra, C. ,  YE, Chunxuan ,  DIFAZIO, Robert, A. ,  CHA, Inhyok

IPC: H04L9/08 ,  H04L9/18

CPC classification number: H04W12/04 ,  H04L9/065 ,  H04L9/0869 ,  H04L9/0875 ,  H04L63/0457 ,  H04L2209/08 ,  H04L2209/80 ,  H04W12/02

Abstract: A secret stream of bits begins by receiving a public random stream contained in a wireless communication signal at a transmit/receive unit. The public random stream is sampled and specific bits are extracted according to a shared common secret. These extracted bits are used to create a longer secret stream. The shared common secret may be generated using JRNSO techniques, or provided to the transmit/receive units prior to the communication session. Alternatively, one of the transmit/receive unit is assumed to be more powerful than any potential eavesdropper. In this situation, the powerful transmit/receive unit may broadcast and store a public random stream. The weaker transmit/receive unit selects select random bits of the broadcast for creating a key. The weaker transmit/receive unit sends the powerful transmit/receive unit the selected bit numbers, and powerful transmit/receive unit uses the random numbers to produce the key created by the weaker transmit/receive unit.

公开(公告)号：EP1920613A2

公开(公告)日：2008-05-14

申请号：EP06802293.8

申请日：2006-08-24

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： PAN, Kyle Jung-Lin ,  YANG, Rui ,  REZNIK, Alexander

IPC: H04Q7/20 ,  H04B7/00

CPC classification number: H04W72/14 ,  H04W52/16

Abstract: A wireless communication method and apparatus for generating a scheduling grant based on a relative grant are disclosed. A wireless transmit/receive unit (WTRU) receives an absolute grant from a serving radio link set (RLS) and receives a relative grant from the serving RLS and at least one non-serving radio link (RL). The WTRU decodes enhanced dedicated channel (E-DCH) absolute grant channel (E-AGCH)E-AGCH signals to detect an absolute grant, and decodes E-DCH relative grant channel (E-RGCH)E-RGCH signals to detect at least one relative grant. The WTRU then calculates a serving grant based on the detected absolute grant and/or the relative grant(s). The relative grant may be detected by performing a hypothesis test on the E-RGCH signals. A multiple alternative hypothesis test is performed for detecting the E-RGCH signals from the serving RLS and a binary hypothesis test is performed for detecting the E-RGCH signals from the at least one non-serving RL. A reliability test may be further performed on the E-RGCH signals.

公开(公告)号：EP1849251A2

公开(公告)日：2007-10-31

申请号：EP06720375.2

申请日：2006-02-07

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： LI, Bin ,  DIFAZIO, Robert, A. ,  PAN, Kyle, Jung-Lin ,  REZNIK, Alexander ,  KAEWELL, John, David, Jr. ,  BECKER, Peter, Edward

IPC: H04K1/10 ,  H04B1/10

CPC classification number: H04L25/03159 ,  H04B17/336

Abstract: A receiver or an integrated circuit (IC) incorporated therein includes a fast Fourier transform (FFT)-based (or hybrid FFT-based) sliding window block level equalizer (BLE) for generating equalized samples. The BLE includes a noise power estimator, first and second channel estimators, an FFT-based chip level equalizer (CLEQ) and a channel monitor unit. The noise power estimator generates a noise power estimate based on two diverse sample data streams. The channel estimators generate respective channel estimates based on the sample data streams. The channel monitor unit generates a first channel monitor signal including truncated channel estimate vectors based on the channel estimates, and a second channel monitor signal which indicates an approximate rate of change of the truncated channel estimate vectors. The FFT-based CLEQ generates the equalized samples based on the noise power estimate, one-block samples of the first and second sample data streams, the channel estimates and the monitor signals.

公开(公告)号：EP1593215A2

公开(公告)日：2005-11-09

申请号：EP04702546.5

申请日：2004-01-15

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： REZNIK, Alexander

IPC: H04B17/00

CPC classification number: H04W52/241 ,  H04B17/336 ,  H04W52/12 ,  H04W52/143 ,  H04W52/20 ,  H04W52/225

Abstract: Received signal characteristics of multiple concurrently received channels are determined using an analytical approach for computation. A receiving wireless transmit receive unit and method are provided for processing concurrent communication signals from a plurality of transmitting WTRUs (50k) that concurrently transmit successive data blocks in a plurality of K forward channels. The receiving WTRU (70’) preferably has a receiver (86) configured to receive successive data blocks of K concurrent transmissions transmitted from the transmitting WTRUs (50k) on the respective K forward channels. The processor (55k) is configured to successively compute instantaneous signal to interference ratio values for each forward channel j, for integers j=1 to K, based on a cross correlation matrix of channel response characteristics of K concurrently received data blocks and to selectively compute an average value that is used for the computing the individual channel characteristics for the forward channel K. The individual channel characteristics are advantageously used for power control or for the processing of the data blocks received on the respective forward channels.

公开(公告)号：EP1529348A2

公开(公告)日：2005-05-11

申请号：EP03739284.2

申请日：2003-06-23

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KIM, Younglok ,  PAN, Jung-Lin ,  ZEIRA, Ariela ,  REZNIK, Alexander

IPC: H04B1/69

CPC classification number: H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

公开(公告)号：EP1525696A2

公开(公告)日：2005-04-27

申请号：EP03760273.7

申请日：2003-06-11

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KIM, Younglok ,  PAN, Jung-Lin ,  ZEIRA, Ariela ,  REZNIK, Alexander

IPC: H04J13/02

CPC classification number: H04B1/71052 ,  H04B1/7105 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A plurality of communication signals have differing spreading codes. Each communication has an associated code comprising chips. For each chip of each communication, a vector of that chip convolved with an impulse response is produced. For each communication, support blocks comprising the chip vectors are produced. A number of the chip vectors in a support block is based on that communication's spreading factor. A system response matrix is assembled. The system response matrix has symbol sub-matrices. Each symbol sub-matrix comprises a support block from each communication. Data of the communications is detected using the symbol response matrix.

Abstract translation: 多个通信信号具有不同的扩展码。 每个通信都有一个包含芯片的相关代码。 对于每个通信的每个码片，产生与脉冲响应卷积的该码片的矢量。 对于每个通信，产生包括码片向量的支持块。 支持块中的许多码片向量基于该通信的扩频因子。 系统响应矩阵被组合。 系统响应矩阵具有符号子矩阵。 每个符号子矩阵包括来自每个通信的支持块。 使用符号响应矩阵检测通信数据。

公开(公告)号：EP1525670A1

公开(公告)日：2005-04-27

申请号：EP03766974.4

申请日：2003-07-30

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KAZAKEVICH, Leonid ,  YANG, Rui ,  REZNIK, Alexander

IPC: H04B1/38

CPC classification number: H04B7/04

Abstract: A “smart antenna” (30) method and apparatus for use in cellular networks where the wireless transmit receive unit (wtru-1, wtru-2, wtru-3) and/or the base station utilize multi-user detection (MUD). The interference to and from other users is taken into consideration to maximize the desired signal while eliminating or reducing interfering signals, thereby increasing overall system capacity.

公开(公告)号：EP2127257A2

公开(公告)日：2009-12-02

申请号：EP07868070.9

申请日：2007-12-28

Applicant: Interdigital Technology Corporation

Inventor： MARINIER, Paul ,  REZNIK, Alexander ,  TERRY, Stephen, E.

IPC: H04L12/56

CPC classification number: H04W72/14 ,  H04W52/12 ,  H04W52/146

Abstract: The disclosed method and apparatus for allocating resources comprise scheduling a requesting wireless transmit receive unit (WTRU) for transmission using non-persistent scheduling.

公开(公告)号：EP2127205A2

公开(公告)日：2009-12-02

申请号：EP08724447.1

申请日：2008-01-08

Applicant: Interdigital Technology Corporation

Inventor： YE, Chunxuan ,  REZNIK, Alexander ,  SHAH, Yogendra, C. ,  PIETRASKI, Philip, J. ,  DIFAZIO, Robert, A.

IPC: H04L12/18 ,  H04L12/56

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.