公开(公告)号：WO2008137417A3

公开(公告)日：2009-04-02

申请号：PCT/US2008061893

申请日：2008-04-29

Applicant: INTERDIGITAL TECH CORP ,  MUKHERJEE RAJAT P ,  SOMASUNDARAM SHANKAR ,  OLVERA-HERNANDEZ ULISES ,  SHAH YOGENDRA C ,  CHITRAPU PRABHAKAR R ,  CHA INHYOK

Inventor： MUKHERJEE RAJAT P ,  SOMASUNDARAM SHANKAR ,  OLVERA-HERNANDEZ ULISES ,  SHAH YOGENDRA C ,  CHITRAPU PRABHAKAR R ,  CHA INHYOK

IPC: H04W48/12 ,  H04W12/00 ,  H04W84/14 ,  H04W88/08

CPC classification number: H04L63/20 ,  H04L63/107 ,  H04W12/08 ,  H04W12/10 ,  H04W48/04 ,  H04W64/003

Abstract: A wireless communication device is configured as an in-home node-B (H(e)NB). The H(e)NB is configured to perform a locking function to control modification of carrier and user controlled parameters, and also configured to detect a change in location.

Abstract translation: 无线通信设备被配置为家庭内节点-B（H（e）NB）。 H（e）NB被配置为执行锁定功能以控制载波和用户控制的参数的修改，并且还被配置为检测位置的变化。

公开(公告)号：WO2005089362A3

公开(公告)日：2007-06-07

申请号：PCT/US2005008697

申请日：2005-03-16

Applicant: INTERDIGITAL TECH CORP

Inventor： CHA INHYOK ,  ZHAO ZHENG ,  GORSUCH THOMAS ERIC ,  LINTELMAN ROSS L

IPC: H04M1/00 ,  H01Q3/22 ,  H04B1/00 ,  H04B1/06 ,  H04B7/04 ,  H04B7/06 ,  H04L12/28 ,  H04W16/28 ,  H04W84/12

CPC classification number: H04B7/0408 ,  H04B7/0695 ,  H04W16/28 ,  H04W84/12 ,  Y02D70/14

Abstract: A smart antenna steering algorithm performs a periodic re-scan at an end of a sustained use period and before a next sustained use period. During a sustained use period, a re-scan of the other antenna beams is not performed. The periodic re-scan is performed on alternate antenna beams that were selected when the preferred antenna beam was selected. The steering algorithm monitors a quality metric of the alternate antenna beams as well as a quality metric for the preferred antenna beam. If the quality metric of the preferred antenna beam is less than the quality metrics of anyone of the alternate antenna beams, then the alternate antenna beam corresponding to the quality metric having a higher value is selected for the next sustained use period.

Abstract translation: 智能天线转向算法在持续使用期结束时和在下一个持续使用期之前执行周期性的重新扫描。 在持续使用期间，不执行其他天线波束的重新扫描。 在选择优选天线波束时选择的备用天线波束执行周期性重新扫描。 转向算法监视替代天线波束的质量度量以及优选天线波束的质量度量。 如果优选天线波束的质量度量小于任何替代天线波束的质量度量，则选择对应于具有较高值的​​质量度量的替代天线波束用于下一个持续使用周期。

公开(公告)号：WO2006034194A3

公开(公告)日：2006-09-21

申请号：PCT/US2005033485

申请日：2005-09-19

Applicant: INTERDIGITAL TECH CORP ,  CHA INHYOK ,  LI YINGXUE

Inventor： CHA INHYOK ,  LI YINGXUE

IPC: H04B7/06 ,  H04B7/08 ,  H04W16/28 ,  H04W76/02 ,  H04W84/12

CPC classification number: H04W16/28 ,  H04B7/0695 ,  H04B7/082 ,  H04W76/02 ,  H04W84/12

Abstract: A communications device with a switched beam antenna operates in a wireless local area network (WLAN) that includes a plurality of transmitters. The switched beam antenna generates a plurality of antenna beams. A method for operating the communications device includes receiving signals from the plurality of transmitters operating within the WLAN, identifying the received signals comprising medium access control (MAC) information, and determining a quality metric for each received signal comprising MAC information (104). A transmitter is selected based on the quality metrics. The antenna beams are scanned for receiving from the selected transmitter the signals comprising MAC information. A quality metric (105) associated with each scanned antenna beam is determined. One of the scanned antenna beams is then selected for communicating with the selected transmitter based on the quality metrics.

Abstract translation: 具有切换波束天线的通信设备在包括多个发射机的无线局域网（WLAN）中工作。 切换波束天线产生多个天线波束。 一种用于操作通信设备的方法包括从在WLAN内工作的多个发射机接收信号，识别包括媒体接入控制（MAC）信息的接收信号，以及确定包括MAC信息的每个接收信号的质量度量（104）。 基于质量度量来选择发射机。 扫描天线波束以从所选发射机接收包括MAC信息的信号。 确定与每个扫描天线波束相关联的质量度量（105）。 然后选择扫描天线波束之一用于基于质量度量与所选择的发射机进行通信。

公开(公告)号：WO2007149154A3

公开(公告)日：2008-05-02

申请号：PCT/US2007011070

申请日：2007-05-08

Applicant: INTERDIGITAL TECH CORP ,  SHAH YOGENDRA C ,  CHA INHYOK

Inventor： SHAH YOGENDRA C ,  CHA INHYOK

IPC: H04L29/06 ,  H04M15/00

CPC classification number: H04L9/3297 ,  G06F21/725 ,  H04L9/3234 ,  H04L63/0853 ,  H04L63/10 ,  H04L63/12 ,  H04L63/126 ,  H04L2463/101 ,  H04L2463/102 ,  H04W12/10 ,  H04W12/12

Abstract: The present invention is related to a wireless transmit/receive unit (WTRU) for providing advanced security functions. The WTRU includes trusted platform module (TPM) for performing trusted computing operations; and a secure time component (STC) for providing a secure measurement of a current time. The STC and the TPM are integrated to provide accurate trusted time information to internal and external to the WTRU. The STC may be located on an expanded a subscriber identity module (SIM), on the WTRU platform, or two STCs may be used, one in each location. Similarly, the TPM may be located on an expanded SIM, on the WTRU platform, or two TPMs may be used, one in each location. Preferably, the STC will include a real time clock (RTC); a; a tamper detection and power failure unit; and a time report and sync controller.

Abstract translation: 本发明涉及用于提供高级安全功能的无线发射/接收单元（WTRU）。 WTRU包括用于执行可信计算操作的可信平台模块（TPM） 以及用于提供当前时间的安全测量的安全时间分量（STC）。 集成了STC和TPM，以向WTRU的内部和外部提供准确的可信时间信息。 STC可以位于WTRU平台上的扩展的订户身份模块（SIM）上，或者可以在每个位置中使用两个STC。 类似地，TPM可以位于WTRU平台上的扩展SIM上，或者可以在每个位置中使用两个TPM。 优选地，STC将包括实时时钟（RTC）; 一个; 篡改检测和电源故障单元; 和时间报告和同步控制器。

公开(公告)号：WO2006110737A3

公开(公告)日：2007-08-23

申请号：PCT/US2006013464

申请日：2006-04-07

Applicant: INTERDIGITAL TECH CORP ,  CHA INHYOK ,  ZEIRA ELDAD ,  BALDWIN KEITH RICHARD

Inventor： CHA INHYOK ,  ZEIRA ELDAD ,  BALDWIN KEITH RICHARD

IPC: H04Q7/00 ,  H04B1/00

CPC classification number: H04B7/0413 ,  H04B7/0695 ,  H04B7/088

Abstract: A method and apparatus for selecting an antenna mapping in multiple-in/multiple-out (MIMO) enabled wireless communication networks. A candidate set of currently available antenna mappings is determined based upon measured long term channel conditions. An antenna mapping is selected from the candidate set, and the mapping is calibrated with a selected antenna mapping of a receiving wireless transmit/receive unit (WTRU). When the selected mappings are calibrated, packet data transmission begins. In an alternative embodiment, a calibration training frame (CTF) is used to calibrate multiple antenna mappings simultaneously or sequentially. Also disclosed are physical layer and medium access control layer frame formats for implementing antenna mapping selection according to the invention.

Abstract translation: 一种用于在启用多输入多输出（MIMO）的无线通信网络中选择天线映射的方法和装置。 基于测量的长期信道条件来确定当前可用天线映射的候选集合。 从候选集中选择天线映射，并且利用接收无线发射/接收单元（WTRU）的选定的天线映射校准映射。 当所选择的映射被校准时，分组数据传输开始。 在替代实施例中，校准训练帧（CTF）用于同时或顺序地校准多个天线映射。 还公开了根据本发明的用于实现天线映射选择的物理层和媒体访问控制层帧格式。

公开(公告)号：WO2005120091A3

公开(公告)日：2007-05-10

申请号：PCT/US2005019795

申请日：2005-06-06

Applicant: INTERDIGITAL TECH CORP ,  IACONO ANA LUCIA ,  CHANDRA ARTY ,  STEINBACH DANIEL P ,  CHA INHYOK ,  OTTO JAMES C ,  JOHNSON KEVIN P ,  GUTOWSKI STANLEY ,  LIU KAI ,  CUFFARO ANGELO ,  STERN-BERKOWITZ JANET

Inventor： IACONO ANA LUCIA ,  CHANDRA ARTY ,  STEINBACH DANIEL P ,  CHA INHYOK ,  OTTO JAMES C ,  JOHNSON KEVIN P ,  GUTOWSKI STANLEY ,  LIU KAI ,  CUFFARO ANGELO ,  STERN-BERKOWITZ JANET

IPC: H04M1/00 ,  H04B1/06 ,  H04B1/10 ,  H04B15/00 ,  H04W16/24

CPC classification number: H04W16/24 ,  H04B7/0695 ,  H04B7/088

Abstract: An access point (14) operates in an 802.11 wireless communication network (10) communicating with a client station (12), and includes a smart antenna (16) for generating directional antenna beams (20) and an omni-directional antenna beam (22). An antenna steering algorithm (18) scans the directional antenna beams and the omni-directional antenna beam for receiving signals from the client station (12). The signals received via each scanned antenna beam are measured, and on of the antenna beams is selected based upon the measuring for communicating with the client station (12). The selected antenna beam is preferably a directional antenna beam. Once the directional antenna beam has been selected, there are several usage rules for exchanging data with the client station (12). The usage rules are directed to an active state of the access point (14), which includes a data transmission mode and a data reception mode.

Abstract translation: 接入点（14）在与客户站（12）通信的802.11无线通信网络（10）中操作，并且包括用于产生定向天线波束（20）和全向天线波束（22）的智能天线（16） ）。 天线转向算法（18）扫描定向天线波束和全向天线波束，用于从客户站（12）接收信号。 测量经由每个扫描天线波束接收的信号，并且基于与客户站（12）进行通信的测量来选择天线波束的导通。 所选择的天线波束优选地是定向天线波束。 一旦选择了定向天线波束，就有与用户台（12）交换数据的几种使用规则。 使用规则被引导到接入点（14）的活动状态，其包括数据传输模式和数据接收模式。

公开(公告)号：WO2006065921A3

公开(公告)日：2007-02-22

申请号：PCT/US2005045274

申请日：2005-12-14

Applicant: INTERDIGITAL TECH CORP ,  IACONO ANA LUCIA ,  CHANDRA ARTY ,  CHA INHYOK ,  CHEN JOHN S ,  LI YINGXUE ,  OTTO JAMES C

Inventor： IACONO ANA LUCIA ,  CHANDRA ARTY ,  CHA INHYOK ,  CHEN JOHN S ,  LI YINGXUE ,  OTTO JAMES C

IPC: H04W16/28 ,  H04W74/08

CPC classification number: H04B7/0608 ,  H04W16/28 ,  H04W72/046

Abstract: An apparatus and a method for improving packet transmission and reducing latency in VOIP over using switched beam antennas having multiple directional antenna beams are disclosed. In an access point (200) having a switched beam antenna (220A and 220B), or other smart antenna system, the present invention extends the coverage area of an access point for authentication and association of a new WTRU (205), extends the access points (200) coverage area during in session transmissions with a WTRU, and adjusts data rates. The method also controls Contention Period (Cpl/contention Free Period (CFP) timing amongst beams emanating from an access point (200) having a switched beam antenna, or other smart antenna system. Fast diversity switching, frame level switching, lowered data rates, and scanning multiple directional antenna beams for the optimum transmission beam are disclosed to improve beam selection and packet transmission.

Abstract translation: 公开了一种用于改善分组传输并且通过使用具有多个定向天线波束的交换波束天线来减少VOIP中的等待时间的装置和方法。 在具有切换波束天线（220A和220B）或其他智能天线系统的接入点（200）中，本发明扩展了用于新的WTRU（205）的认证和关联的接入点的覆盖区域， （200）覆盖区域，并且调整数据速率。 该方法还控制从具有切换波束天线或其他智能天线系统的接入点（200）发出的波束之间的竞争周期（Cpl /争用自由周期（CFP）定时）。快速分集切换，帧级切换，降低的数据速率， 并且公开了扫描用于最佳传输波束的多个定向天线波束以改善波束选择和分组传输。

公开(公告)号：WO2006031499A3

公开(公告)日：2006-07-13

申请号：PCT/US2005031655

申请日：2005-09-07

Applicant: INTERDIGITAL TECH CORP ,  IACONO ANA LUCIA ,  CHANDRA ARTY ,  CHA INHYOK ,  MARINIER PAUL ,  ROY VINCENT

Inventor： IACONO ANA LUCIA ,  CHANDRA ARTY ,  CHA INHYOK ,  MARINIER PAUL ,  ROY VINCENT

IPC: H01Q3/26

CPC classification number: H04B7/0632 ,  H04B7/0408 ,  H04B7/0619 ,  H04B7/0695 ,  H04B7/088 ,  H04B17/10 ,  H04B17/24 ,  H04B17/318 ,  H04B17/336 ,  H04L5/14 ,  H04W24/08 ,  H04W84/12

Abstract: A method for taking measurements with a smart antenna in a wireless communication system having a plurality of STAs begins by sending a measurement request from a first STA to a second STA. At least two measurement packets are transmitted from the second STA to the first STA. Each measurement packet is received at the first STA using a different antenna beam. The first STA performs measurements on each measurement packet and selects an antenna beam direction based on the measurement results.

Abstract translation: 在具有多个STA的无线通信系统中用智能天线进行测量的方法通过从第一STA向第二STA发送测量请求开始。 从第二STA向第一STA发送至少两个测量分组。 每个测量分组在第一STA处使用不同的天线波束来接收。 第一STA对每个测量分组执行测量，并基于测量结果选择天线波束方向。

公开(公告)号：WO2006031495A3

公开(公告)日：2006-07-13

申请号：PCT/US2005031641

申请日：2005-09-07

Applicant: INTERDIGITAL TECH CORP ,  MARINIER PAUL ,  CHANDRA ARTY ,  CHA INHYOK ,  ROY VINCENT

Inventor： MARINIER PAUL ,  CHANDRA ARTY ,  CHA INHYOK ,  ROY VINCENT

IPC: H04B1/38

CPC classification number: H04W16/28 ,  H04B7/0408 ,  H04B7/0628 ,  H04B7/0695 ,  H04B7/088 ,  H04W8/22 ,  H04W8/245 ,  H04W28/18 ,  H04W48/10 ,  H04W88/08

Abstract: A method for implementing a smart antenna in establishing association between a station (STA) and an access point (AP) in a wireless local area network begins by transmitting a beacon frame by the AP on one antenna beam. The beacon frame is received at the STA, which measures the signal quality of the beacon frame. The AP switches to a different antenna beam and repeats the method until the beacon frame has been transmitted on all antenna beams. The STA associates to the AP that transmits the beacon frame with the highest signal quality on one of its antenna beams. A similar method may be used in which the STA sends a probe request frame to the AP, which then responds with probe response frames sent on multiple antenna beams.

Abstract translation: 通过在一个天线波束上由AP发送信标帧，开始在建立无线局域网中的站（STA）和接入点（AP）之间的关联中实现智能天线的方法。 在STA处接收信标帧，其测量信标帧的信号质量。 AP切换到不同的天线波束并重复该方法，直到在所有天线波束上发送信标帧为止。 STA将AP发送到其天线波束之一上发送具有最高信号质量的信标帧的AP。 可以使用类似的方法，其中STA向AP发送探测请求帧，该AP然后在多个天线波束上发送的探测响应帧进行响应。

公开(公告)号：WO2008118136A3

公开(公告)日：2009-04-09

申请号：PCT/US2007021854

申请日：2007-10-12

Applicant: INTERDIGITAL TECH CORP ,  REZNIK ALEXANDER ,  BRIANCON ALAIN CHARLES LOUIS ,  DODIS YEVGENIY ,  SHAH YOGENDRA C ,  YE CHUNXUAN ,  DIFAZIO ROBERT A ,  CHA INHYOK

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.

Abstract translation: 秘密的比特流开始于在发送/接收单元处接收包含在无线通信信号中的公共随机流。 公共随机流被采样，并且根据共享的公共秘密提取特定位。 这些提取的比特用于创建更长的秘密流。 可以使用JRNSO技术生成共享公用秘密，或者在通信会话之前提供给发送/接收单元。 或者，假设发射/接收单元之一比任何潜在的窃听者更强大。 在这种情况下，强大的发送/接收单元可以广播和存储公共随机流。 较弱的发送/接收单元选择用于创建密钥的广播的选择随机比特。 较弱的发射/接收单元发送强大的发射/接收单元所选择的位号，强大的发射/接收单元使用随机数产生由较弱发射/接收单元产生的密钥。