公开(公告)号：MX2010002832A

公开(公告)日：2010-03-31

申请号：MX2010002832

申请日：2008-09-11

Applicant: QUALCOMM INC

Inventor： GOROKHOV ALEXEI ,  PALANKI RAVI ,  AGRAWAL AVNEESH

IPC: H04L27/26 ,  H04L5/00

Abstract: Se describen técnicas para la transmisión de información utilizando símbolos baliza en un sistema de comunicación inalámbrica. En un diseño, un transmisor puede asignar información a múltiples sub-portadores entre una pluralidad de sub-portadores, con la información que se transmite por la posición de los múltiples sub-portadores. El transmisor puede asignar la información a al menos un símbolo no binario. El transmisor puede entonces determinar cada uno de los múltiples sub-portadores con base en un símbolo no binario o puede determinar todas los múltiples sub-portadores con base en un símbolo no binario. El transmisor puede generar un símbolo baliza con la información asignada a los múltiples sub-portadores. El transmisor puede usar mayor potencia de transmisión para los múltiples sub-portadores para permitir que los receptores con geometría baja reciban la información de forma confiable. El uso de múltiples sub-portadores puede permitir que más información sea transmitida en el símbolo baliza y también puede mejorar la diversidad de frecuencia.

公开(公告)号：MX2010001798A

公开(公告)日：2010-03-10

申请号：MX2010001798

申请日：2008-08-13

Applicant: QUALCOMM INC

Inventor： TEAGUE EDWARD HARRISON ,  KHANDEKAR AAMOD ,  GOROKHOV ALEXEI ,  AGRAWAL AVNEESH

IPC: H04L1/16 ,  H04L1/18

Abstract: Reconocimientos (ACK/NACK) son suprimidos cuando se transmiten paquetes no decodificables en un sistema de comunicación que utiliza HARQ; los Paquetes no decodificables son transmitidos para ahorrar ancho de banda del sistema y hacer que la eficiencia espectral general sea superior; el transmisor y el receptor saben que en HARQ, cuando el transmisor transmite un paquete no decodificable al receptor, esto ocasionará que el receptor transmita automáticamente de regreso un NACK; el transmisor y el receptor explotan este hecho descartando y/o no transmitiendo el NACK (respectivamente).

公开(公告)号：SG158751A1

公开(公告)日：2010-02-26

申请号：SG2007185739

申请日：2004-05-07

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH

IPC: H04W36/18 ,  H04W72/08 ,  H04B1/173 ,  H04J13/02 ,  H04Q7/38

Abstract: Techniques are provided to support soft handoff in a frequency hopping OFDMA system (120x). Each sector (104a, 104b, 104c) concurrently supports 'non- handoff users and 'soft-handoff users. A non-handoff user communicates with only one sector, and a soft-handoff user communicates with multiple sectors (104a, 104b, 104c) simultaneously. Non-handoff users are assigned traffic channels by their sole sectors (104a, 104b, 104c), and soft-handoff users are assigned traffic channels by their 'serving' sectors. For each sector, the traffic channels assigned to the non-handoff users are orthogonal to one another and may or may not be orthogonal to the traffic channels assigned to the soft-handoff users. Each sector (104a, 104b, 104c) processes its received signal and recovers the data transmissions from the non-handoff users of that sector. Each sector (104a, 104b, 104c) then estimates the interference (520) due to the non-handoff users and cancels the interference (530) from the received signal. Each sector further processes its interference-canceled signal to recover the data transmissions from the soft-handoff users (540a).

公开(公告)号：AT450107T

公开(公告)日：2009-12-15

申请号：AT07760731

申请日：2007-04-16

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  LEE CHONG ,  MOALLEMI KAMRAM ,  JULIAN DAVID JONATHAN ,  JAIME MANUEL E ,  DOUGLAS ROBERT KEITH ,  XIAO LU ,  ROSE GREGORY

IPC: A61B5/332 ,  H04W88/02 ,  H04W88/08

Abstract: Various operations may be performed based on a distance-related function associated with two or more devices. For example, an association procedure for two or more devices may be based on one or more determined distances. Similarly, presence management may be based on one or more determined distances. A distance-related function may take various form including, for example, a distance between devices, two or more distances between devices, a rate of change in a relative distance between devices, relative acceleration between devices, or some combination of two or more of the these distance-related functions.

公开(公告)号：CA2723758A1

公开(公告)日：2009-11-19

申请号：CA2723758

申请日：2009-05-15

Applicant: QUALCOMM INC

Inventor： JI TINGFANG ,  BHUSHAN NAGA ,  KHANDEKAR AAMOD D ,  AGRAWAL AVNEESH

IPC: H04W36/08 ,  H04W52/24

Abstract: Techniques for using virtual noise figure for various functions in a wireless communication network are described. A virtual noise figure is an indication of a virtual noise level at a receiver, which may be higher than an actual noise level at the receiver. In an aspect, virtual noise figure may be used for serving base station selection. A terminal may receive information indicative of a virtual noise figure for each of at least one base station. The terminal may select a serving base station based on the virtual noise figure for each base station. The terminal may send data to the serving base station at a rate selected based on an actual noise figure for the serving base station. In other aspects, virtual noise figure may be used for interference management and/or power control.

公开(公告)号：SG155890A1

公开(公告)日：2009-10-29

申请号：SG2009058850

申请日：2005-12-22

Applicant: QUALCOMM INC

Inventor： JULIAN DAVID JONATHAN ,  AGRAWAL AVNEESH ,  SUTIVONG ARAK ,  TEAGUE EDWARD HARRISON

IPC: H04W36/06

Abstract: The disclosed embodiments provide for methods and systems for selecting sectors for handoff in a communication system. According to one aspect, the method includes monitoring an indicia of transmit power on a plurality of RL control channels directed to a plurality of sectors, and selecting one of the sectors as a candidate for a RL handoff. The disclosed embodiments also provide for methods and systems for indicating a selected serving sector for handoff in a communication system. According to one aspect, the method includes sending a first signal to a first sector to indicate the first sector as a serving sector for a forward-link handoff, and sending a second signal to a second sector to indicate the second sector as a serving sector for a reverse-link handoff.

公开(公告)号：CA2720131A1

公开(公告)日：2009-10-29

申请号：CA2720131

申请日：2009-04-22

Applicant: QUALCOMM INC

Inventor： BHUSHAN NAGA ,  GOROKHOV ALEXEI Y ,  BORRAN MOHAMMAD J ,  AGRAWAL AVNEESH ,  KHANDEKAR AAMOD D ,  JI TINGFANG

IPC: H04W72/08

Abstract: Techniques for transmitting null pilots to support interference estimation in a wireless network are described. A null pilot is non-transmission on designated time-frequency resources by a cell or a cluster of cells supporting cooperative transmission to a UE. The received power of the null pilot from the cell or cluster of cells may be indicative of interference from other cells. In one design, a cell in the cluster may determine resources for sending a null pilot by the cell. The cell may transmit the null pilot (i.e., send no transmissions) on the resources to allow UEs to estimate out-of-cluster interference. Some or all cells in the cluster may transmit null pilots on the same resources. The cell may receive interference and channel information from the UE and may send data transmission to the UE based on the interference and/or channel information. Remaining cells in the cluster may reduce interference to the UE.

公开(公告)号：AU2009233881A1

公开(公告)日：2009-10-15

申请号：AU2009233881

申请日：2009-04-07

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  MONTOJO JUAN ,  KHANDEKAR AAMOD D

IPC: H04W16/14 ,  H04W88/06 ,  H04W88/10

Abstract: A method for defining new control channels in a wireless communications network is described, the method comprising reserving, by a first wireless communications apparatus, a portion of wireless communication resources for general data communications according to a legacy network specification, allocating, by the first wireless communications apparatus, a subset of the reserved portion of wireless communication resources for communicating control data according to a non-legacy network specification, receiving, at the first wireless communications apparatus, legacy control data from a second wireless communications apparatus, and transmitting the legacy control data over the subset from the first wireless communications apparatus. Further, a corresponding apparatus and a computer-readable medium are described.

公开(公告)号：AT445980T

公开(公告)日：2009-10-15

申请号：AT06813917

申请日：2006-08-28

Applicant: QUALCOMM INC

Inventor： SAMBHWANI SHARAD DEEPAK ,  AGRAWAL AVNEESH ,  MONTOJO JUAN

IPC: H04W36/08 ,  H04W36/18 ,  H04W48/20

公开(公告)号：AU2005253606C1

公开(公告)日：2009-10-01

申请号：AU2005253606

申请日：2005-06-08

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  JI TINGFANG ,  TEAGUE EDWARD HARRISON

IPC: H04W36/06 ,  H04W36/18

Abstract: For soft handoff on the reverse link with restrictive reuse, a wireless terminal searches for pilots transmitted by sectors in a wireless system, measures the detected pilots, selects a serving sector (e.g., the strongest received sector), and identifies non-serving sectors that may receive high interference from the terminal. The serving sector assigns the terminal with subband(s) that are usable by the serving sector and unusable by the non-serving sectors. The terminal transmits data symbols on the assigned subbands to the serving and non-serving sectors. These sectors process the reverse link transmission from the terminal and obtain soft-decision symbols, which are estimates of the transmitted data symbols. The soft-decision symbols from co-located sectors may be combined and then decoded to obtain decoded packets. The sectors may also independently decode the soft-decision symbols, and the decoded packets from these sectors may be combined to obtain final decoded packets for the terminal.