公开(公告)号：NO20075855A

公开(公告)日：2008-01-23

申请号：NO20075855

申请日：2007-11-14

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY ,  SAMMOUR MOHAMMED ,  GRANDHI SUDHER A

IPC: H04B7/00 ,  H04L7/00 ,  H04W4/08

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

Abstract: A station (STA) comprising: a transmitter configured to transmit information to an access point (AP); a receiver configured to receive, from the AP, a management frame that includes an indication of an assigned group; wherein the transmitter is further configured to transmit, to the AP, an acknowledgement associated with the management frame; wherein the receiver is further configured to receive a data frame, wherein the data frame comprises a data packet and a group identifier; and a processor configured to determine whether the group identifier received in the data frame corresponds to the assigned group, and wherein the processor is further configured to cause the STA to enter a power saving mode on a condition that the group identifier received in the data frame does not correspond to the assigned group.

公开(公告)号：AU2007261342A1

公开(公告)日：2007-12-27

申请号：AU2007261342

申请日：2007-06-19

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY ,  WANG JIN ,  TERRY STEPHEN E

IPC: H04W36/00 ,  H04W36/08 ,  H04W56/00

Abstract: A method and system for performing handover in a third generation (3G) long term evolution (LTE) system are disclosed. A source evolved Node-B (eNode-B) makes a handover decision based on measurements and sends a handover request to a target eNode-B. The target eNode-B sends a handover response to the source eNode-B indicating that a handover should commence. The source eNode-B then sends a handover command to a wireless transmit/receive unit (WTRU). The handover command includes at least one of reconfiguration information, information regarding timing adjustment, relative timing difference between the source eNode-B and the target eNode-B, information regarding an initial scheduling procedure at the target eNode-B, and measurement information for the target eNode-B. The WTRU then accesses the target eNode-B and exchanges layer 1/2 signaling to perform downlink synchronization, timing adjustment, and uplink and downlink resource assignment based on information included in the handover command.

公开(公告)号：NO20075460L

公开(公告)日：2007-12-06

申请号：NO20075460

申请日：2007-10-29

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY

IPC: H04M1/00 ,  H04W48/20 ,  H04W88/06

Abstract: A method and apparatus for selecting one of a plurality of multi-band access points (APs) to associate with a multi-band wireless transmit/receive unit (WTRU) are disclosed. The multi-band APs broadcast frequency band information regarding multiple frequency bands on which the multi-band AP is configured to operate. The multi-band WTRU selects a particular multi-band AP to associate with and a frequency band to use to communicate with the selected multi-band AP based on the frequency band information. If the multi-band WTRU receives frequency band information from the selected multi-band AP which indicates that a characteristic, (e.g., throughput, path loss, load, capacity, backhaul), of the selected frequency band is unacceptable, the multi-band WTRU determines whether to disassociate with the selected multi-band AP or to continue to associate with the selected multi-band AP via a different frequency band.

公开(公告)号：MX2007012143A

公开(公告)日：2007-11-15

申请号：MX2007012143

申请日：2006-03-30

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY

IPC: H04M1/00 ,  H04W48/20 ,  H04W88/06

Abstract: Se describe un metodo y aparato para seleccionar uno de una pluralidad de puntos de acceso (AP) de banda multiple para asociarse con una unidad trasmisora/receptora inalambrica (WTRU) de banda multiple. Los AP de banda multiple difunden informacion de banda de frecuencia respecto a bandas de frecuencia multiples sobre las cuales se configura el AP de banda multiple para operar. La WTRU de banda multiple selecciona un AP de banda multiple particular para asociarse con una banda de frecuencia para utilizarla y comunicarse con el AP de banda multiple seleccionado en base en la informacion de banda de frecuencia. Si la WTRU de banda multiple recibe informacion de banda de frecuencia del AP de banda multiple seleccionado la cual indica que es inaceptable una caracteristica (por ejemplo rendimiento, perdida de trayectoria, carga, capacidad, via indirecta larga) de la banda de frecuencia seleccionada, la WTRU de banda multiple determina si se disocia con el AP de banda multiple seleccionada o continua asociado con el AP de banda multiple selecciona via una banda de frecuencia diferente.

公开(公告)号：CA2647442A1

公开(公告)日：2007-10-04

申请号：CA2647442

申请日：2007-03-22

Applicant: INTERDIGITAL TECH CORP

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

IPC: H04B7/26 ,  H04L7/00 ,  H04W56/00

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.

公开(公告)号：MX2007008893A

公开(公告)日：2007-08-16

申请号：MX2007008893

申请日：2006-01-19

Applicant: INTERDIGITAL TECH CORP

Inventor： GRANDHI SUDHEER A ,  ZEIRA ELDAD ,  CHANDRA ARTY ,  LEVY JOSEPH S

IPC: H04L12/56 ,  H04W28/16 ,  H04W84/18

Abstract: Se describe un sistema de comunicaciones inalambricas que utiliza un sistema de enlace directo (DLS). Una estacion movil (STA) establece un enlace de comunicacion directa con otra STA mediante el envio de un mensaje donde solicita un DLS a un punto de acceso (AP), (es decir, un controlador centralizado. El AP puede aceptar o rechazar la peticion de DLS con base en mediciones de canal. Si se acepta la peticion de DLS, el DLS se establece, de modo tal que las STAs se pueden comunicarse directamente entre si. Una conexion de DLS establecida se puede desmontar si el AP envia un mensaje que incluye una peticion de desmontaje de DLS a una de las STAs, o con base en las mediciones de canal. El sistema puede ser una red Ad hoc que comprende una pluralidad de STAs sin un AP, donde cada STA mantiene una base de datos de las STAs de un salto y de dos saltos, y que establece un enlace directo con otras STAs luego de informar a las STAs vecinas de una intencion de establecer un enlace de comunicacion directa.

公开(公告)号：CA2641447A1

公开(公告)日：2007-08-16

申请号：CA2641447

申请日：2007-02-01

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY ,  WANG JIN ,  TERRY STEPHEN E ,  OLESEN ROBERT L

IPC: H04L1/18

Abstract: A receiver and receiving method for supporting multiple hybrid automatic repeat request (H-ARQ) processes per transmission time interval (TTI) are disclosed. A receiver includes a plurality of H-ARQ processes to receive multiple transport blocks (TBs) simultaneously per TTI. After receiving a plurality of TBs, which were assigned to multiple H-ARQ processes and after receiving the corresponding control information, the receiver sends feedback to each of the TBs indicating successful or unsuccessful receipt of each of the TBs to the transmitter.

公开(公告)号：AU2007209869A1

公开(公告)日：2007-08-09

申请号：AU2007209869

申请日：2007-01-31

Applicant: INTERDIGITAL TECH CORP

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

IPC: H04W56/00 ,  H04W72/54 ,  H04W74/04

Abstract: In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.

公开(公告)号：CA2635762A1

公开(公告)日：2007-07-12

申请号：CA2635762

申请日：2006-12-27

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY ,  TERRY STEPHEN E

IPC: H04L1/18

Abstract: A method and system for implementing hybrid automatic repeat request (H-ARQ)-assisted automatic repeat request (ARQ) in a wireless communication system are disclosed. When an H-ARQ negative acknowledgement (NACK)-to-positive acknowledgement (ACK) error occurs, the H-ARQ receiver sends an H-ARQ NACK-to-ACK error indicator to the H-ARQ transmitter unless a maximum retransmission limit has reached, a maximum time for delivery has expired or a lifespan of the failed packet has expired. The H-ARQ transmitter sends a local NACK to the ARQ transmitter so that the failed packet is recovered at an ARQ level. The H-ARQ receiver sends a local NACK to the ARQ receiver if the H-ARQ receiver does not receive the failed packet before certain conditions occur. The ARQ receiver may send a status report to the ARQ transmitter for recovery of the failed packet.

公开(公告)号：AR054434A1

公开(公告)日：2007-06-27

申请号：ARP060101275

申请日：2006-03-31

Applicant: INTERDIGITAL TECH CORP

Inventor： CHANDRA ARTY

IPC: H04W48/20 ,  H04W88/06 ,  H04B7/24

Abstract: Se divulgan un método y aparato para seleccionar una de una pluralidad de puntos de acceso (APs) multi-banda para que se asocien con una unidad inalámbrica de transmision/recepcion (WTRU) multi-banda. Los APs multi-banda difunden informacion de banda de frecuencia referida a multiples bandas de frecuencia sobre las que se configura para que opere el AP multi-banda. La WTRU multi-banda selecciona un AP multi-banda en particular para que se asocie y una banda de frecuencia para que se utilizada con el fin de comunicarse con el AP multi-banda seleccionado en base a la informacion de banda de frecuencia. Si la WTRU multi-banda recibe informacion de banda de frecuencia del AP multi- banda seleccionado que indica que una características (por ejemplo, rendimiento, pérdida de trayectoria, carga, capacidad, backhaul), de la banda de frecuencia seleccionada es inaceptable, la WTRU multi-banda determina si se desasocia con el AP multi-banda seleccionado o si continua asociándose con el AP multi-banda seleccionado a través de una banda de frecuencia diferente.