公开(公告)号：WO2007111941A2

公开(公告)日：2007-10-04

申请号：PCT/US2007007117

申请日：2007-03-22

Applicant: INTERDIGITAL TECH CORP ,  WANG JIN ,  CHEN JOHN S ,  SAMMOUR MOHAMMED ,  TERRY STEPHEN E ,  CHANDRA ARTY ,  ZHANG GUODONG

Inventor： WANG JIN ,  CHEN JOHN S ,  SAMMOUR MOHAMMED ,  TERRY STEPHEN E ,  CHANDRA ARTY ,  ZHANG GUODONG

IPC: H04W56/00

CPC classification number: H04W56/0045 ,  H04J11/0069 ,  H04W52/0216 ,  H04W72/0413 ,  H04W92/10 ,  Y02D70/00 ,  Y02D70/1244 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/24

Abstract: A Node-B sends a polling message to a wireless transmit/receive unit (WTRU). The WTRU sends an uplink synchronization burst in response to the polling message without contention. The Node-B estimates an uplink timing shift based on the synchronization burst and sends an uplink timing adjustment command to the WTRU. The WTRU then adjusts uplink timing based on the uplink timing adjustment command. Alternatively, the Node-B may send a scheduling message for uplink synchronization to the WTRU. The WTRU may send a synchronization burst based on the scheduling message. Alternatively, the WTRU may perform contention-based uplink synchronization after receiving a synchronization request from the Node-B. The WTRU may enter an idle state instead of performing a handover to a new cell when the WTRU moves to the new cell. A discontinuous reception (DRX) interval for the WTRU may be set based on activity of the WTRU.

Abstract translation: 节点B向无线发射/接收单元（WTRU）发送轮询消息。 WTRU响应于轮询消息发送上行链路同步突发，而没有竞争。 节点B基于同步突发来估计上行链路时移，并向WTRU发送上行链路时序调整命令。 WTRU然后基于上行链路定时调整命令来调整上行链路定时。 备选地，节点B可以向WTRU发送用于上行链路同步的调度消息。 WTRU可以基于调度消息发送同步突发。 或者，WTRU可以在从节点B接收到同步请求之后执行基于竞争的上行链路同步。 WTRU可以进入空闲状态，而不是在WTRU移动到新小区时执行到新小区的切换。 WTRU的不连续接收（DRX）间隔可以基于WTRU的活动来设置。

公开(公告)号：WO2007033056A3

公开(公告)日：2007-06-28

申请号：PCT/US2006035254

申请日：2006-09-11

Applicant: INTERDIGITAL TECH CORP ,  CHANDRA ARTY ,  ZEIRA ELDAD M ,  LEVY JOSEPH S ,  TERRY STEPHEN E ,  GRANDHI SUDHEER A

Inventor： CHANDRA ARTY ,  ZEIRA ELDAD M ,  LEVY JOSEPH S ,  TERRY STEPHEN E ,  GRANDHI SUDHEER A

IPC: H04L12/28 ,  H04W74/08 ,  H04L12/56 ,  H04W48/08 ,  H04W80/02

CPC classification number: H04L1/0079 ,  H04W16/14 ,  H04W74/08 ,  H04W92/02

Abstract: A method and apparatus for protecting high throughput (HT) stations (STAs) are disclosed. In one embodiment, a physical layer (PHY) legacy preamble transmitted by one STA is decoded by another STA that does not use a legacy preamble. In another embodiment, one STA is identified by another STA by using bits in the preamble of a packet to indicate which PHY type will be used in the remaining portion of the packet. In yet another embodiment, one STA sends ready-to-send (RTS)/clear-to-send (CTS) or CTS-to-self messages for reserving a medium in the presence of another STA of a different type than the one STA. In yet another embodiment, an access point (AP) transmits a beacon or an association message including a capability information element (IE) that indicates operation or support for a legacy preamble, HT STA preambles and a medium access control (MAC) packet transmission with HT protection mechanisms.

Abstract translation: 公开了一种用于保护高吞吐量（HT）站（STA）的方法和设备。 在一个实施例中，由一个STA发送的物理层（PHY）传统前导码由不使用传统前导码的另一STA解码。 在另一个实施例中，一个STA由另一STA通过使用分组的前导码中的比特来标识，以指示将在分组的剩余部分中使用哪种PHY类型。 在又一个实施例中，一个STA在不同于一个STA的另一类型的另一STA的存在下发送准备发送（RTS）/清除发送（CTS）或CTS到自身消息以用于保留介质 。 在又一个实施例中，接入点（AP）将包括指示对传统前导码，HT STA前导码和介质访问控制（MAC）分组传输的操作或支持的能力信息元素（IE）的信标或关联消息与 HT保护机制。

公开(公告)号：WO2006115999A2

公开(公告)日：2006-11-02

申请号：PCT/US2006014927

申请日：2006-04-20

Applicant: INTERDIGITAL TECH CORP ,  SAMMOUR MOHAMMED ,  GRANDHI SUDHEER A ,  CHANDRA ARTY

Inventor： SAMMOUR MOHAMMED ,  GRANDHI SUDHEER A ,  CHANDRA ARTY

IPC: H04B7/00 ,  H04W4/08

CPC classification number: H04W52/0209 ,  H04W4/08 ,  H04W8/186 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0229 ,  H04W84/12 ,  H04W88/08 ,  Y02B60/50 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22

Abstract: A method for addressing groups of stations in a wireless communication system begins by assigning the stations in the system into a number of groups. A group identifier is signaled to each station and the group identifier is indicated in a frame for each group that has data in the frame. The addressing method can be applied to power savings for the station, wherein the station enters a power saving mode if the group identifier for the station is not present in the frame.

Abstract translation: 一种在无线通信系统中寻址站组的方法，首先将系统中的站分配成多个组。 组标识符被发信号通知给每个站，并且组帧标识符在帧中指示具有帧中的数据的每个组。 寻址方法可以应用于该站的节电，其中如果该站的组标识符不存在于该帧中，则该站进入省电模式。

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：EP1550320A4

公开(公告)日：2006-04-05

申请号：EP03799362

申请日：2003-09-30

Applicant: INTERDIGITAL TECH CORP

Inventor： REDDY GAUTAM G ,  CHITRAPU PRABHAKAR R ,  KAZAKEVICH LEONID ,  HUNKELER TERESA ,  CHANDRA ARTY

IPC: H04B7/26 ,  G01S5/00 ,  H04L12/28 ,  H04L12/56 ,  H04L29/02 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/04 ,  H04W88/06 ,  H04Q7/00

CPC classification number: H04W88/04 ,  G01S5/0027 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/06

Abstract: A wireless network provides controlled wireless communications with multi-mode wireless WTRUs (33, 37). The wireless network has at least one base station (25) having a transceiver operating in an infrastructure communication mode withmulti mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications (40) of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on(duality of Service criteria).

公开(公告)号：EP1851917A4

公开(公告)日：2012-03-07

申请号：EP06720467

申请日：2006-02-08

Applicant: INTERDIGITAL TECH CORP

Inventor： LIU KAI ,  WANG CARL ,  CHANDRA ARTY ,  WANG JIN

IPC: H04W8/26 ,  H04B7/04 ,  H04W16/28 ,  H04W72/04

CPC classification number: H04W16/28 ,  H04B7/0695

公开(公告)号：EP1782578A4

公开(公告)日：2008-08-06

申请号：EP05783894

申请日：2005-08-05

Applicant: INTERDIGITAL TECH CORP

Inventor： GRANDHI SUDHEER A ,  CHANDRA ARTY ,  LEVY JOSEPH S ,  SHAHEEN KAMEL M ,  TERRY STEPHEN E ,  ZEIRA ELDAD

IPC: H04L12/28 ,  H04W74/04

CPC classification number: H04W48/10 ,  H04B7/02 ,  H04B7/0413 ,  H04B7/2612 ,  H04W72/005 ,  H04W72/0446 ,  H04W74/08 ,  H04W74/0816 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/442 ,  Y02D70/449

Abstract: A method and system for controlling access to a medium in a wireless communication system. A superframe structure is defined in time domain to include a contention free period (CFP) which has at least one scheduled resource allocation (SRA), at least one management SRA (MSRA) and a contention period. An extended beacon (EB) including information about the SRA and MSRA is transmitted for. The MAC architecture reduces station battery consumption, supports higher throughput for non-real time (NRT) traffic and is more efficient for real time (RT) traffic while maintaining full compatibility.

Abstract translation: 一种在无线通信系统中控制对介质的访问的方法和系统。 在时域中定义超帧结构以包括具有至少一个调度资源分配（SRA），至少一个管理SRA（MSRA）和争用周期的无竞争周期（CFP）。 发送包括关于SRA和MSRA的信息的扩展信标（EB）。 MAC架构降低了站电池消耗，支持非实时（NRT）流量的更高吞吐量，并且对于实时（RT）流量更有效，同时保持完全兼容性。

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：EP1540971A4

公开(公告)日：2005-07-27

申请号：EP03761976

申请日：2003-06-20

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY ,  CHITRAPU PRABHAKAR R ,  MENON MARAYAN PARAPPIL

IPC: H04L12/28 ,  H04L12/56 ,  H04W8/18 ,  H04W40/24 ,  H04W84/12 ,  H04W84/18 ,  H04Q7/20 ,  H04Q7/36 ,  H04Q7/38

CPC classification number: H04W8/18 ,  H04W40/246 ,  H04W40/248 ,  H04W48/08 ,  H04W84/12 ,  H04W84/18

Abstract: A user equipment (UE 101) operating in a wireless system (103) having at least one base station (102), communicates with base stations (102b, 104b, 105b) in neighboring wireless systems and conveys information regarding these neighboring wireless systems to the base station (102b) of its wireless system (103), which updates and stores this information for use in handover of UEs. The BS may also obtain updates directly from the base stations of neighboring wireless systems which may include a diversity of systems such as WLANS, Bluetooth, UMTS, GPRS, etc., and provide to UEs a list of those wireless systems which the UEs need not provide updates to the BS providing the list.

公开(公告)号：EP1869815A4

公开(公告)日：2013-05-01

申请号：EP06740403

申请日：2006-03-31

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY ,  ZEIRA ELDAD ,  SAMMOUR MOHAMMED ,  GRANDHI SUDHEER A

IPC: H04L1/16

CPC classification number: H04W28/0268 ,  H04L1/1664 ,  H04L1/1671 ,  H04L1/1685 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/03343 ,  H04L49/65 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W24/08 ,  H04W84/12