公开(公告)号：BRPI0620359A2

公开(公告)日：2011-11-08

申请号：BRPI0620359

申请日：2006-12-20

Applicant: QUALCOMM INC

Inventor： LAROIA RAJIV ,  ANIGSTEIN PABLO ,  PARIZHSKY VLADIMIR ,  SRINIVASAN MURARI ,  TSIRTSIS GEORGE

IPC: H04L12/28 ,  H04W40/04

Abstract: Methods and apparatus for routing messages between an end node and an access node via another access node are described. Physical layer identification information is used when identifying a remote, e.g., adjacent, access node as a message destination. Thus, when a connection identifier based on one or more physical layer identifiers is available to a wireless terminal, e.g., from one or more downlink signals received from a destination access node, the wireless terminal can use the connection identifier corresponding to the destination node to route a message via an access node with which it has an established uplink connection. Such connection identifier information can be used even when other addressing information, e.g., network layer address information, associated with the destination access node, may not be available to the wireless terminal.

公开(公告)号：AT515170T

公开(公告)日：2011-07-15

申请号：AT06848990

申请日：2006-12-20

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  JIN HUI ,  LI JUNYI ,  PARIZHSKY VLADIMIR

IPC: H04W72/12 ,  H04W28/18 ,  H04W52/08 ,  H04W52/14

Abstract: In a first mode of dedicated control channel (DCCH) operation, a wireless terminal is allocated more segments than in a second mode. The wireless terminal uses different information bit to modulation symbol mapping in the different modes. On a per DCCH segment basis, the same number of modulation symbols are communicated in either mode but more information bits are conveyed in the second mode. Information bits for a DCCH segment are partitioned into two subsets. The two subsets are used to generate another set, each of the two subsets and the another set are input to the same mapping function to generate three equal size sets of modulation symbols which are transmitted via the DCCH segment. Uplink tone hopping is used such that one of the equal size sets of modulation symbols for the DCCH segment uses the same tone but a different set uses a different tone.

公开(公告)号：HK1138142A1

公开(公告)日：2010-08-13

申请号：HK10104572

申请日：2009-03-16

Applicant: QUALCOMM INC

Inventor： PARIZHSKY VLADIMIR ,  LAROIA RAJIV ,  LI JUNYI ,  VENKATA UPPALA SATHYADEV ,  DAS ARNAB

IPC: H04W20090101

公开(公告)号：ES2341876T3

公开(公告)日：2010-06-29

申请号：ES06023559

申请日：2002-03-04

Applicant: QUALCOMM INC

Inventor： LAROIA RAJIV ,  LI JUNYI ,  PARIZHSKY VLADIMIR

IPC: H04J11/00 ,  H04L7/033 ,  H04B7/26 ,  H04L5/02 ,  H04L7/00 ,  H04L27/26 ,  H04W56/00

Abstract: Un procedimiento para realizar ajustes de temporización de símbolos en un dispositivo de comunicaciones que incluye un transmisor que transmite múltiples símbolos en cada uno de una pluralidad de lapsos, comprendiendo el procedimiento las etapas de: determinar el número de muestras por el cual ha de adelantarse o retardarse la temporización de símbolos durante un lapso (810); aumentar el número de muestras en un símbolo de entre un primer símbolo (802, 1000) y un último símbolo (808, 1200) de dicho lapso (810) en el número de muestras determinado cuando dicha temporización de símbolos ha de retardarse durante dicho lapso (810) en el número de muestras determinado; y reducir el número de muestras en un símbolo de entre el primer símbolo (802, 1100) y el último símbolo (808, 1300) de dicho lapso (810) en el número de muestras determinado cuando dicha temporización de símbolos ha de adelantarse durante dicho lapso (810) en el número de muestras determinado, siendo dicho lapso (810) un periodo de tiempo que comprende múltiples periodos de tiempo (802, 804, 806, 808) de símbolo durante los cuales el dispositivo de comunicaciones utiliza el mismo tono o grupo de tonos antes de conmutar a otro tono o grupo de tonos.

公开(公告)号：AU2008260211A1

公开(公告)日：2008-12-11

申请号：AU2008260211

申请日：2008-05-27

Applicant: QUALCOMM INC

Inventor： RICHARDSON THOMAS ,  PARIZHSKY VLADIMIR

IPC: H04B7/04

Abstract: Methods and apparatus for improved utilization of air link resources are discussed in wireless communications systems employing multi-sector base stations and wireless terminals with multiple antennas. Timing synchronization is maintained across the base station sectors, and the same set of tones are used in adjacent sectors. In a sector boundary region, which is typically a high interference region, a wireless terminal is set to a sector pair state and operated in a MIMO mode of operation, communicating with two adjacent base station antenna faces of the same base station concurrently, the two different adjacent base station antenna faces corresponding to different adjacent sectors. Thus, typically high interference sector boundary regions, are converted into high capacity regions by having the sectors coordinated and utilizing MIMO techniques.

公开(公告)号：HK1107200A1

公开(公告)日：2008-03-28

申请号：HK07109110

申请日：2007-08-21

Applicant: QUALCOMM INC

Inventor： LAROIA RAJIV ,  LI JUNYI ,  PARIZHSKY VLADIMIR

IPC: H04J11/00 ,  H04B7/26 ,  H04L20100101 ,  H04L5/02 ,  H04L7/00 ,  H04L7/033 ,  H04L27/26 ,  H04W56/00

Abstract: Symbol timing synchronization in OFDM communication systems where multiple wireless terminals communicate with a single base station is described. Base station transmitter and receiver symbol timing is fixed. Each wireless terminal operates to independently adjust its transmitter timing. Transmitter timing synchronization at the wireless terminal is slaved to the terminal's receiver timing synchronization. Each wireless terminal first corrects its receiver symbol timing based on a signal received from the base station. The wireless terminal then adjusts its transmitter symbol timing as a function of its receiver symbol timing. When the receiver symbol timing is to be advanced or delayed by some amount, the transmitter symbol timing is also advanced or delayed, respectively, by the same, or substantially the same, amount. Symbol timing adjustment can be made by adding or deleting digital samples from the first or last symbol in a dwell.

公开(公告)号：CA2645965A1

公开(公告)日：2007-10-25

申请号：CA2645965

申请日：2007-04-14

Applicant: QUALCOMM INC

Inventor： RICHARDSON THOMAS ,  LEONIDOV ALEXANDER ,  LI JUNYI ,  PARIZHSKY VLADIMIR ,  LAROIA RAJIV ,  UPPALA SATHYADEV VENKATA

IPC: H04L27/26

Abstract: A composite signal includes a high power beacon signal and low power corresponding wideband synchronization signal and is communicated over a time interval exceeding a single OFDM transmission time interval. A base station transmits one or more different such composite broadcast signals in a recurring timing structure. Each different potential beacon signal, e.g., a single tone signal, is paired with a unique wideband synchronization signal. A wideband synchronization signal includes at least some predetermined null tones and at least some predetermined non-null tones. For a given wideband synchronization signal, the predetermined null tones carry predetermined modulation symbol values, A wireless terminal receives a composite signal, identifies a beacon, determines a corresponding known wideband synchronization signal, compares received to known wideband synchronization signals, and determines at least one of a timing adjustment, frequency adjustment and channel estimation.

公开(公告)号：CA2631780A1

公开(公告)日：2007-07-05

申请号：CA2631780

申请日：2006-12-20

Applicant: QUALCOMM INC

Inventor： SRINIVASAN MURARI ,  VENKATA UPPALA SATHYADEV ,  ANIGSTEIN PABLO ,  PARIZHSKY VLADIMIR ,  DAS ARNAB ,  LAROIA RAJIV ,  CHAMPALAL DUGAD RAKESH

IPC: H04L12/56

Abstract: A base station uses a common link layer controller corresponding to multiple physical attachment points, facilitating multiple concurrent wireless connections between different base station sector physical attachment points and the same wireless terminal using the same link layer link. A wireless terminal maintains multiple simultaneous wireless connections for the same link layer link. A packet of user data is fragmented into a plurality of grouping of MAC frames, thus a packet portion can be communicated over a connection. A single packet is sometimes communicated with different portion s conveyed over different wireless connections. Automatic repeat request, implemented using the common link layer controller, allows for retransmissio n of a packet portion over a different connection than it was initially transmitted over. A wireless terminal sends connection request messages including lists of link layer identifiers associated with the wireless terminal. A base station sends response messages including an indication of whether logical link state was already present.

公开(公告)号：CA2625699A1

公开(公告)日：2007-04-26

申请号：CA2625699

申请日：2006-10-11

Applicant: QUALCOMM INC

Inventor： SRINIVASAN MURARI ,  DAS ARNAB ,  ANIGSTEIN PABLO ,  PARIZHSKY VLADIMIR ,  LAROIA RAJIV

IPC: H04L12/28 ,  H04L12/56

Abstract: Methods and apparatus for maintaining, selecting and indicating a preferred communications link with an access node, e.g., base station, are described.

公开(公告)号：AU2006304106A1

公开(公告)日：2007-04-26

申请号：AU2006304106

申请日：2006-10-11

Applicant: QUALCOMM INC

Inventor： DAS ARNAB ,  SRINIVASAN MURARI ,  PARIZHSKY VLADIMIR ,  LAROIA RAJIV ,  ANIGSTEIN PABLO

IPC: H04L12/28 ,  H04L12/56

Abstract: Methods and apparatus for maintaining, selecting and indicating a preferred communications link with an access node, e.g., base station, are described.