公开(公告)号：EP1730853A4

公开(公告)日：2007-09-26

申请号：EP05729218

申请日：2005-03-16

Applicant: INTERDIGITAL TECH CORP

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

IPC: H04B7/04 ,  H01Q3/22 ,  H04B1/02 ,  H04B1/06 ,  H04B1/38 ,  H04B7/06 ,  H04B7/08 ,  H04L12/28 ,  H04W16/28 ,  H04W84/12

CPC classification number: H04B7/0408 ,  H04B7/0617 ,  H04B7/0695 ,  H04B7/086 ,  H04W16/28 ,  H04W84/12 ,  Y02D70/14

Abstract: A smart antenna steering algorithm performs a self-monitored re-scan during a sustained use period after having selected a preferred antenna beam. During a sustained use period, a re-scan of the other antenna beams is not performed. The steering algorithm periodically monitors a quality metric of the ongoing radio link provided by the preferred antenna beam. The quality metric is based upon a signal quality metric and a link quality metric. If the quality metric drops below certain thresholds during the sustained use period, the steering algorithm either swaps the preferred antenna beam with an alternate antenna beam or initiates a re-scan of the available antenna beams for selecting a new preferred antenna beam.

公开(公告)号：EP1751991A4

公开(公告)日：2008-03-12

申请号：EP05758685

申请日：2005-06-06

Applicant: INTERDIGITAL TECH CORP

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.

公开(公告)号：EP1730852A4

公开(公告)日：2007-11-28

申请号：EP05728325

申请日：2005-03-16

Applicant: INTERDIGITAL TECH CORP

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

IPC: H04B7/04 ,  H01Q3/00 ,  H04B1/06 ,  H04B7/06

CPC classification number: H04B7/0617 ,  H04B7/0408 ,  H04B7/0695 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/20 ,  Y02D70/444

Abstract: A smart antenna steering algorithm operates in response to different functions monitored by the media access control (MAC) layer within a client station. One function is when the MAC layer indicates that the client station has been placed in a power savings mode. In response, the antenna algorithm stores an index of the currently selected antenna. Another function is when the MAC layer indicates that the client station has not been synchronized, associated and authenticated with an access point. In response, the algorithm selects an omni-directional antenna beam as the default antenna beam. Another function is when the MAC layer provides beacon period synchronization information to the antenna steering algorithm so that the algorithm can update its own timer.

Abstract translation: 智能天线操纵算法响应由客户站内的媒体访问控制（MAC）层监视的不同功能而操作。 一个功能是当MAC层指示客户端站已被置于省电模式时。 作为响应，天线算法存储当前选择的天线的索引。 另一个功能是当MAC层指示客户站未与接入点同步，关联和验证时。 作为响应，该算法选择全向天线波束作为默认天线波束。 另一个功能是当MAC层向天线转向算法提供信标周期同步信息时，算法可以更新自己的定时器。

公开(公告)号：EP1730851A4

公开(公告)日：2007-10-24

申请号：EP05725698

申请日：2005-03-16

Applicant: INTERDIGITAL TECH CORP

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

IPC: H04B7/04 ,  H01Q3/22 ,  H04B1/02 ,  H04B1/06 ,  H04B1/38 ,  H04B7/06 ,  H04B7/08 ,  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.

公开(公告)号：EP1797730A4

公开(公告)日：2007-12-12

申请号：EP05798206

申请日：2005-09-19

Applicant: INTERDIGITAL TECH CORP

Inventor： CHA INHYOK ,  LI YINGXUE

IPC: H04L12/28 ,  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. 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 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.

公开(公告)号：EP1730854A4

公开(公告)日：2007-09-12

申请号：EP05730212

申请日：2005-03-16

Applicant: INTERDIGITAL TECH CORP

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

IPC: H04B7/04 ,  H01Q3/02 ,  H04B1/06 ,  H04B7/06 ,  H04B7/08

CPC classification number: H04B7/0408 ,  H04B7/0617 ,  H04B7/086 ,  Y02D70/14

Abstract: An antenna steering algorithm for a smart antenna uses signal quality metrics and link quality metrics for selecting a preferred antenna beam. The link quality metrics supplement the signal quality metrics for improving the antenna steering decision. The link quality metrics are based on information available from existing counters operating in the media access control (MAC) layer. Separate estimates of the frame error rates in the receive links and in the transmit links are obtained. One estimate is the downlink quality metric (DLQM) and another estimate is the uplink quality metric (ULQM). Alternative link quality metrics are based on throughput and data rates of the exchanged data.

公开(公告)号：EP1792420A4

公开(公告)日：2007-09-05

申请号：EP05793860

申请日：2005-09-07

Applicant: INTERDIGITAL TECH CORP

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

IPC: H01Q3/26 ,  H04B7/04

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，是从第一STA向第二STA发送测量请求开始的。 至少两个测量分组从第二STA连续发送到第一STA。 使用不同的天线波束在第一STA处接收每个测量分组。 第一STA对每个测量分组进行测量，并根据测量结果选择天线波束方向。

公开(公告)号：CA2700317C

公开(公告)日：2015-09-08

申请号：CA2700317

申请日：2008-09-19

Applicant: INTERDIGITAL TECH CORP

Inventor： SCHMIDT ANDREAS U ,  KUNTZ NICOLAI ,  KASPER MICHAEL ,  SHAH YOGENDRA C ,  CHA INHYOK ,  GUCCIONE LOUIS J

IPC: H04L29/06 ,  H04W4/60 ,  H04W8/26

Abstract: A mobile trusted platform (MTP) configured to provide virtual subscriber identify module (vSIM) services is disclosed. In one embodiment, the MTP includes: a device manufacturer- trusted subsystem (TSS-DM) configured to store and provide credentials related to a manufacturer of the MTP; a mobile network operator -trusted subsystem (MNO-TSS) configured to store and provide credentials related to a mobile network operator (MNO); and a device user/owner - trusted subsystem (TSS-DO/TSS-U) configured to store and provide credentials related to user of the MTP. The TSS-MNO includes a vSIM core services unit, configured to store, provide and process credential information relating to the MNO. The TSS-DO/TSS-U includes a vSIM management unit, configured to store, provide and process credential information relating to the user/owner of the MTP. The TSS-DO/TSS-U and the TSS-MNO communicate through a trusted vSIM service.

公开(公告)号：MY151827A

公开(公告)日：2014-07-14

申请号：MYPI20054205

申请日：2005-09-07

Applicant: INTERDIGITAL TECH CORP

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

IPC: H01Q3/26

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 (902) TO A SECOND STA (904). AT LEAST TWO MEASUREMENT PACKETS ARE TRANSMITTED FROM THE SECOND STA (904) TO THE FIRST STA. EACH MEASUREMENT PACKET (200) IS RECEIVED AT THE FIRST STA (902) USING A DIFFERENT ANTENNA BEAM. THE FIRST STA PERFORMS MEASUREMENTS ON EACH MEASUREMENT PACKET (200) AND SELECTS AN ANTENNA BEAM DIRECTION BASED ON THE MEASUREMENT RESULTS.

公开(公告)号：AU2012205274A1

公开(公告)日：2012-08-09

申请号：AU2012205274

申请日：2012-07-24

Applicant: INTERDIGITAL TECH CORP

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

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

Abstract: A wireless communication device is configured as an in-home node-B (H(e)NB). H(e)NB is configured to perform a locking function to control modification of 5 carrier and user controlled parameters, and also configured to detect a change in location.