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71. 发明专利

SG132508A1 INITIAL CELL SEARCH ALGORITHM 未知
公开(公告)号：SG132508A1
公开(公告)日：2007-06-28
申请号：SG2005055280
申请日：2002-02-04
申请人： INTERDIGITAL TECH CORP
发明人： ALPASLAN DEMIR , GRIECO DONALD M
IPC分类号： H04B1/707 , H04B7/26 , H04J3/06 , H04L7/04 , H04W48/16 , H04J13/00 , H04Q7/38
摘要： A system and method for establishing initial synchronization for the link between a UE and a base station in a communication network uses window exclusion logic in order to avoid a deadlock condition upon a detection of the wrong public land mobile network (PLMN). The communication signal is processed in a three step decision process. The first decision step (12) determines a chip offset of the strongest path detected over a frame of samples. In response to the first decision (12), the second step (14) generates a scrambling code group number and slot offset for retrieving the second synchronization code. The third decision step (16) retrieves a primary scrambling code in response to the code group number for synchronizing the UE to the base station.

72. 发明专利

DK1608080T3 未知
公开(公告)号：DK1608080T3
公开(公告)日：2007-03-26
申请号：DK05108806
申请日：2002-02-04
申请人： INTERDIGITAL TECH CORP
发明人： DEMIR ALPASLAN , GRIECO DONALD M
IPC分类号： H04B1/707 , H04B7/26 , H04J3/06 , H04L7/04 , H04W48/16
摘要： A method and an apparatus are disclosed for establishing a communication link between a user equipment (UE) and a base station in a wireless communication network. An incoming communication signal is sampled, wherein the sampling includes generating even and odd signal samples of the communication signal, a signal strength magnitude is approximated for each of the signal samples, and the signal strength magnitudes of the signal samples are accumulated. A peak sample is then identified, wherein the peak sample is the signal sample with a highest accumulated signal strength magnitude, an index value is assigned to the peak sample, wherein the index value indicates a chip location of a primary scrambling code, and a chip offset is assigned to the index value based on the index value. A code group number and slot offset is determined based on the chip offset, the primary scrambling code is retrieved based on the code group number and slot offset, and a search frequency of a UE is adjusted based on the primary scrambling code.

73. 发明专利

NO20070080A 未知
公开(公告)号：NO20070080A
公开(公告)日：2007-03-05
申请号：NO20070080
申请日：2007-01-05
申请人： INTERDIGITAL TECH CORP
发明人： GRIECO DONALD M , PAN JUNG-LIN , KWAK JAEYOUNG
IPC分类号： H04J3/00 , H04B1/707 , H04B1/7105 , H04J13/00

74. 发明专利

NO20062621L 未知
公开(公告)号：NO20062621L
公开(公告)日：2006-08-03
申请号：NO20062621
申请日：2006-06-07
申请人： INTERDIGITAL TECH CORP
发明人： GRIECO DONALD M , PAN JUNG-LIN , BULTAN AYKUT , DENNEAN CHARLES
IPC分类号： H04B7/216 , H04B1/707 , H04B7/26 , H04L20060101 , H04L7/04 , H04W56/00

75. 发明专利

CA2586716A1 METHOD AND APPARATUS FOR ESTIMATING CHANNELIZATION CODES IN A WIRELESS TRANSMIT/RECEIVE UNIT 未知
公开(公告)号：CA2586716A1
公开(公告)日：2006-05-18
申请号：CA2586716
申请日：2005-10-20
申请人： INTERDIGITAL TECH CORP
发明人： GRIECO DONALD M , KWAK JAEYOUNG , ZEIRA ARIELA , PAN KYLE JUNG-LIN
IPC分类号： H04B7/216 , H03D1/04 , H04J3/00 , H04J99/00 , H04L1/00
摘要： A method and apparatus for estimating channelization codes in a wireless transmit/receive unit (WTRU) using blind code detection (BCD). A WTRU receives communication bursts and detects a midamble in the received burst. A candidate code list is generated in accordance with the detected midamble. The candidate code list includes channelization codes intended for both the intended WTRU and other WTRUs. Active channelization codes among the codes in the candidate list are identified, and the identified codes are forwarded to a multi-user detector (MUD). Since the orthogonal variable spreading factor code maintains the orthogonality between codes of different SF, SFs of other WTRUs follow the SF of the intended WTRU. Moreover, since the data for other WTRUs is not used in symbol processing after MUD, the performance of MUD for the intended WTRU is preserved with the SF ambiguity of other WTRUs.

76. 发明专利

NO20055769A 未知
公开(公告)号：NO20055769A
公开(公告)日：2005-12-05
申请号：NO20055769
申请日：2005-12-05
申请人： INTERDIGITAL TECH CORP
发明人： GRIECO DONALD M
IPC分类号： H04B7/216 , H04J13/00 , H04L1/00 , H04W36/18
CPC分类号： H04L1/0056 , H04B1/7105 , H04B2201/70702 , H04L1/0046 , H04L1/0047 , H04L25/0208 , H04W36/18
摘要： A wireless communication system, method and apparatus are provided for soft and softer handover of a mobile wireless transmit/receive unit (WTRU) between two or more base stations and/or base station sectors. A network control unit assigns selected base stations to transmit communication data to the WTRU based on the WTRU being disposed in base station or base station sector geographic range of service. A joint detector (JD) receiver is configured to receive and process one or more wireless data signals in each of a series of timeframes where each signal received within a common timeslot has a unique channel encoding of the same communication data. The JD receiver has a plurality of channel estimators that estimate received signals within a common timeslot and a combiner configured to decode and combine the channel estimates to derive a resultant data signal.

77. 发明专利

NO20054871A 未知
公开(公告)号：NO20054871A
公开(公告)日：2005-11-11
申请号：NO20054871
申请日：2005-10-21
申请人： INTERDIGITAL TECH CORP
发明人： GRIECO DONALD M , KAZAKEVICH LEONID , YANG RUI
IPC分类号： H04B17/40 , H03G3/30 , H04L5/14 , H04B7/005 , H04Q7/30
CPC分类号： H03G3/3052 , H03G3/3036 , H03G3/3042 , H03G3/3047 , H04L5/1484 , H04M3/40

78. 发明专利

NO20054643L 未知
公开(公告)号：NO20054643L
公开(公告)日：2005-11-09
申请号：NO20054643
申请日：2005-10-10
申请人： INTERDIGITAL TECH CORP
发明人： GRIECO DONALD M , HAIM JOHN W , GUCCIONE LOUIS J , TYRA FRYDERYK
IPC分类号： H03G3/00 , H03G3/20 , H03G3/30 , H04B7/005 , H04J3/00
摘要： An automatic gain control (AGC) method according to the present invention applies an initial gain by a digital AGC circuit in a timeslot is determined using a final calculated gain from the same timeslot in the previous frame together with an offset factor. An erase function is activated for a given data sample block when the number of saturated data samples that are detected within the block exceeds a threshold value. The power measurement made by the AGC circuit and used to update the gain is adjusted based on the number of measured data samples that are saturated. These elements provide a gain limiting function and allows limiting of the dynamic range for further signal processing.

79. 发明专利

NO20052000L 未知
公开(公告)号：NO20052000L
公开(公告)日：2005-06-22
申请号：NO20052000
申请日：2005-04-25
申请人： INTERDIGITAL TECH CORP
发明人： GRIECO DONALD M , BULTAN AYKUT
IPC分类号： H04B1/707 , H04L7/00 , H04L7/02 , H04L25/02 , H04L27/06 , G06F7/38
摘要： A digital timing synchronizer of a receiver is provided for timing synchronization to a transmitter in a wireless communication system, wherein the received signal has a timing error with respect to a reference code. A channel estimator estimates an initial code phase of the received signal. A code generator generates a timing reference code that is adjustable by integer increments. An interpolation feedback circuit is configured for interpolation and correction of the timing error, whereby the interpolation is achieved through an integer code shift, plus a quantized fractional adjustment selected from a look-up table of quantized fractional adjustment values and their associated predetermined interpolator coefficients, from which a time corrected version of the received signal is produced.

80. 发明专利

HK1065424A1 Initial cell search algorithm 未知
公开(公告)号：HK1065424A1
公开(公告)日：2005-02-18
申请号：HK04108130
申请日：2004-10-18
申请人： INTERDIGITAL TECH CORP
发明人： ALPASLAN DEMIR , GRIECO DONALD M
IPC分类号： H04L20060101 , H04B1/707 , H04B7/26 , H04J3/06 , H04L7/04 , H04W48/16
摘要： A method and an apparatus are disclosed for establishing a communication link between a user equipment (UE) and a base station in a wireless communication network. An incoming communication signal is sampled, wherein the sampling includes generating even and odd signal samples of the communication signal, a signal strength magnitude is approximated for each of the signal samples, and the signal strength magnitudes of the signal samples are accumulated. A peak sample is then identified, wherein the peak sample is the signal sample with a highest accumulated signal strength magnitude, an index value is assigned to the peak sample, wherein the index value indicates a chip location of a primary scrambling code, and a chip offset is assigned to the index value based on the index value. A code group number and slot offset is determined based on the chip offset, the primary scrambling code is retrieved based on the code group number and slot offset, and a search frequency of a UE is adjusted based on the primary scrambling code.

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