公开(公告)号：AU2005285179B2

公开(公告)日：2009-09-03

申请号：AU2005285179

申请日：2005-09-08

Applicant: INTERDIGITAL TECH CORP

Inventor： TOUAG ATHMANE ,  ROY VINCENT ,  CUFFARO ANGELO ,  SITA FRANK LA ,  MARINIER PAUL ,  CAVE CHRISTOPHER

IPC: H04W28/18 ,  H04W36/06 ,  H04W84/12

Abstract: This invention relates to wireless local area networks, and particularly to the IEEE 802.11 family of standards. It consists of a method and apparatus that can be implemented in access points (APs) and subscriber wireless transmit/receive units (WTRUs), in order to allow an AP to initiate re-association of a WTRU to itself or a different AP. The invention improves the robustness of the network by enabling more efficient load balancing, congestion control, and roaming, without compromising the user experience.

公开(公告)号：AT413025T

公开(公告)日：2008-11-15

申请号：AT03752488

申请日：2003-09-22

Applicant: INTERDIGITAL TECH CORP

Inventor： CAVE CHRISTOPHER ,  RUDOLF MARIAN ,  ZUNIGA JUAN CARLOS

IPC: H04B7/216 ,  H04B7/06 ,  H04L12/56 ,  H04W4/12 ,  H04W16/28 ,  H04W36/08 ,  H04W36/32

Abstract: A method for handover a mobile unit from a first base station to a second base station in a wireless communication systems employing smart antenna technology. Following trigger events of a handover, the mobile station generates a physical signal sounding pulse transmitted by an isotropic antenna. The sounding pulse may consist of a common sequence of symbols or a specific sequence of symbols that uniquely identifies the mobile station. A series of sounding pulses can be sent according to a power ramping procedure until a base station has focused a communications beam toward the mobile. Receiving base stations provide feedback information upon detection of the sounding pulse allowing the mobile unit and/or base station to form communication beams toward each other. A mapping protocol may also be utilized by the communication system.

公开(公告)号：DE602004014184D1

公开(公告)日：2008-07-10

申请号：DE602004014184

申请日：2004-11-05

Applicant: INTERDIGITAL TECH CORP

Inventor： CAVE CHRISTOPHER

IPC: H04B1/00 ,  H04B20060101 ,  H04B7/212 ,  H04B7/216 ,  H04J13/00 ,  H04W28/18

公开(公告)号：AU2005272052B2

公开(公告)日：2008-06-12

申请号：AU2005272052

申请日：2005-06-30

Applicant: INTERDIGITAL TECH CORP

Inventor： SITA FRANK LA ,  RUDOLF MARIAN ,  CUFFARO ANGELO ,  CAVE CHRISTOPHER ,  ZUNIGA JUAN CARLOS ,  ROY VINCENT ,  MARINIER PAUL ,  TOUAG ATHMANE

IPC: H04L12/28 ,  H04L12/56 ,  H04W36/00 ,  H04W36/12 ,  H04W36/36 ,  H04W84/12

Abstract: A method for communicating a list of handover candidates in a wireless local area network from a station to a serving access point (AP) begins by determining a list of handover candidate APs at the station. The candidate list is sorted at the station and is sent to the serving AP. The sending step can include sending the candidate list to the serving AP upon the expiration of a predetermined period of time or upon receipt at the station of an event trigger. The method can also include the step of requesting a candidate list from the station by the serving AP.

公开(公告)号：BRPI0513115A

公开(公告)日：2008-04-29

申请号：BRPI0513115

申请日：2005-06-29

Applicant: INTERDIGITAL TECH CORP

Inventor： MARINIER PAUL ,  ROY VINCENT ,  CAVE CHRISTOPHER ,  SITA FRANK LA ,  CUFFARO ANGELO ,  TOUAG ATHMANE ,  RUDOLF MARIAN

IPC: H04L12/28 ,  H04W36/08 ,  H04W48/10 ,  H04W52/02 ,  H04W84/12

Abstract: A method for neighbor scanning in a wireless local area network having a station, a first access point, AP, to which the station is associated, and a second AP, comprising the steps of generating timing information regarding a beacon signal sent by the second AP, reporting the timing information from the first AP to the station and scheduling at the station a time, based on the timing information, to listen for the beacon signal transmitted by the second AP. The timing information includes an indication of a time difference between a second beacon signal sent by the access point and the first beacon signal sent by the second AP and the time difference is an offset in timing units.

公开(公告)号：DE60314614T2

公开(公告)日：2008-03-06

申请号：DE60314614

申请日：2003-04-16

Applicant: INTERDIGITAL TECH CORP

Inventor： CAVE CHRISTOPHER ,  ZEIRA ELDAD

IPC: H04B7/00 ,  H04B7/26 ,  H04L1/00 ,  H04L12/28 ,  H04L12/56 ,  H04L29/08

Abstract: The present invention is a method for controlling access to a contention-based communication channel. Error types of a transmitted communication signal over the communication channel are classified and corresponding parameters of the communication channel are adjusted in response to the classification to control the rate at which individual error types occur.

公开(公告)号：CA2663932A1

公开(公告)日：2008-02-28

申请号：CA2663932

申请日：2007-08-20

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  MARINIER PAUL ,  REZNIK ALEXANDER ,  GRANDHI SUDHEER A ,  CAVE CHRISTOPHER ,  TERRY STEPHEN E

IPC: H04L1/18

Abstract: In a wireless communication system including at least one wireless transm it/receive unit (WTRU) and at least one Node-B (NB), an activation or deacti vation state is determined for each of a plurality of HARQ processes. A sign al that includes the activation or deactivation state for each of the HARQ p rocesses is transmitted to the WTRU. In response to receiving the signal, th e WTRU activates or deactivates a particular HARQ process in accordance with the activation or deactivation state for each of the HARQ processes contain ed in the received signal. The activation of HARQ processes is considered fo r non-scheduled transmissions.

公开(公告)号：DE60315975D1

公开(公告)日：2007-10-11

申请号：DE60315975

申请日：2003-05-15

Applicant: INTERDIGITAL TECH CORP

Inventor： CAVE CHRISTOPHER

IPC: H04B7/00 ,  H04L12/56 ,  H04B7/216 ,  H04W24/10 ,  H04W28/04 ,  H04W28/16 ,  H04W72/08 ,  H04W74/02

公开(公告)号：NO20071768A

公开(公告)日：2007-05-30

申请号：NO20071768

申请日：2007-04-02

Applicant: INTERDIGITAL TECH CORP

Inventor： CAVE CHRISTOPHER ,  MARINIER PAUL ,  CUFFARO ANGELO ,  ROY VINCENT ,  SITA FRANK LA

IPC: H04W28/18 ,  H04W36/06 ,  H04W84/12

CPC classification number: H04W36/08 ,  H04W28/18 ,  H04W36/06 ,  H04W84/12 ,  H04W88/08

Abstract: This invention relates to wireless local area networks, and particularly to the IEEE 802.11 family of standards. It consists of a method and apparatus that can be implemented in access points (APs) and subscriber wireless transmit/receive units (WTRUs), in order to allow an AP to initiate re-association of a WTRU to itself or a different AP. The invention improves the robustness of the network by enabling more efficient load balancing, congestion control, and roaming, without compromising the user experience.

公开(公告)号：MX2007003012A

公开(公告)日：2007-05-18

申请号：MX2007003012

申请日：2005-09-13

Applicant: INTERDIGITAL TECH CORP

Inventor： RUDOLF MARIAN ,  KWAK JOSEPH ,  ROY VINCENT ,  MARINIER PAUL ,  RAHMAN SHAMIM AKBAR ,  CAVE CHRISTOPHER ,  CUFFARO ANGELO ,  HUNKELER TERESA ,  ALI AHMED ,  TOUAG ATHMANE ,  SITA FRANK LA

IPC: H04W28/08 ,  H04W28/14 ,  H04W48/08 ,  H04W48/12 ,  H04W48/18 ,  H04W48/20 ,  H04W72/00 ,  H04W74/08

Abstract: Un metodo mejorado de manejo de red, particularmente en el contexto de normas IEEE802.11 y IEEE802.11k, a traves de dos nuevas medidas MAC, con ventajas acompanantes. Las dos nuevas medidas incluyen medida de carga de trafico de enlace ascendente WTRU y una medida de carga de servicio AP, y generalmente es aplicable al menos las capas 1 y 2 como se aplican en al menos 802.11K en le contexto de los sistemas OFDM y CDMA 2000, aunque tambien es aplicable a otros escenarios. Un metodo para determinar y anunciar la congestion que tambien se provee para un sistema de Red de area Local Inalambrica (WLAN). La presente invencion tambien introduce un metodo para manejar la congestion cuando se detecta la congestion. Este aspecto de la presente invencion se aplica principalmente a sistemas inalambricos que usan el mecanismo de Acceso Multiple de Percepcion Portadora/Evasion por Colision (CSMA-CA). Los metodos se implementan ventajosamente en WTRUs selectivamente configurada de varias formas.