公开(公告)号：CA2569455C

公开(公告)日：2013-07-23

申请号：CA2569455

申请日：2005-06-03

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  MALLADI DURGA P ,  STAMOULIS ANASTASIOS ,  MANTRAVADI ASHOK ,  MURALI RAMASWAMY

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/02 ,  H04L27/26 ,  H04L29/08 ,  H04W80/02 ,  H04W88/10 ,  H04W92/10

Abstract: To transmit overhead information for broadcast and multicast services in a system that utilizes multiple radio technologies, time slots used for OFDM in a super-frame are initially ascertained. Overhead information for multiple streams to be sent in the time slots used for OFDM is generated. The overhead information conveys the time slots and the coding and modulation used for the streams and may be given in various forms. Multiple records may be formed for the overhead information for the streams. The overhead information for the streams is processed and time division multiplexed with the data for the streams in the super-frame. Information indicating the time slots used for OFDM in the super-frame may be sent separately or included in the overhead information. An indicator may also be appended to each stream to indicate whether there is any change in the overhead information for the stream in the next super-frame.

公开(公告)号：AU2004302856C1

公开(公告)日：2010-09-23

申请号：AU2004302856

申请日：2004-09-02

Applicant: QUALCOMM INC

Inventor： WALKER KENT ,  KHANDEKAR AAMOD ,  VIJAYAN RAJIV ,  LING FUYUN ,  MURALI RAMASWAMY

IPC: H04J11/00 ,  H04B7/00 ,  H04H20/00 ,  H04J3/24 ,  H04L1/00 ,  H04L5/02 ,  H04L5/06 ,  H04L12/28 ,  H04L25/02 ,  H04L27/26 ,  H04W4/06 ,  H04W28/06 ,  H04W72/00 ,  H04W72/04

Abstract: Techniques for multiplexing and transmitting multiple data streams are described. Transmission of the multiple data streams occurs in “super-frames”. Each super-frame has a predetermined time duration and is further divided into multiple (e.g., four) frames. Each data block for each data stream is outer encoded to generate a corresponding code block. Each code block is partitioned into multiple subblocks, and each data packet in each code block is inner encoded and modulated to generate modulation symbols for the packet. The multiple subblocks for each code block are transmitted in the multiple frames of the same super-frame, one subblock per frame. Each data stream is allocated a number of transmission units in each super-frame and is assigned specific transmission units to achieve efficient packing. A wireless device can select and receive individual data streams.

公开(公告)号：AU2004307449C1

公开(公告)日：2009-04-30

申请号：AU2004307449

申请日：2004-10-21

Applicant: QUALCOMM INC

Inventor： MURALI RAMASWAMY ,  VIJAYAN RAJIV ,  KRISHNAMOORTHI RAGHURAMAN ,  WALKER KENT G

IPC: H04L1/00 ,  H04L5/02 ,  H04L27/26

Abstract: Techniques for multiplexing multiple data streams using frequency division multiplexing (FDM) in an OFDM system are described. M disjoint "interlaces" are formed with U usable subbands. Each interlace is a different set of S subbands, where . The subbands for each interlace are interlaced with the subbands for each of the other interlaces. M slots may be defined for each symbol period and assigned slot indices 1 through M. The slot indices may be mapped to interlaces such that (1) frequency diversity is achieved for each slot index and (2) the interlaces used for pilot transmission have varying distances to the interlaces used for each slot index, which improves channel estimation performance. Each data stream may be processed as data packets of a fixed size, and different numbers of slots may be used for each data packet depending on the coding and modulation scheme used for the data packet.

公开(公告)号：AU2009200088A1

公开(公告)日：2009-02-05

申请号：AU2009200088

申请日：2009-01-09

Applicant: QUALCOMM INC

Inventor： WALKER KENT ,  VIJAYAN RAJIV ,  MURALI RAMASWAMY

IPC: H04H20/71 ,  H04N5/44 ,  G06F20060101 ,  G06F3/00 ,  G06F13/00 ,  G06Q50/30 ,  H04B7/00 ,  H04N5/445 ,  H04N5/455 ,  H04N5/50 ,  H04N7/08

Abstract: Video portion and audio portion are designated to be played together but are transmitted by the base station at different times: video portion is transmitted early with respect to audio portion by a delay difference.

公开(公告)号：BRPI0513885A

公开(公告)日：2008-05-20

申请号：BRPI0513885

申请日：2005-07-29

Applicant: QUALCOMM INC

Inventor： WANG MICHAEL MAO ,  LING FUYUN ,  MURALI RAMASWAMY ,  VIJAYAN RAJIV

IPC: H04L1/00

Abstract: A method for improving frequency diversity in an OFDM system using interleaved interlaces for constellation symbol interleaving comprises interleaving a number of subcarriers of an interlace in a bit reversal fashion and interleaving a number of interlaces in the bit reversal fashion.

公开(公告)号：AU2004307138B2

公开(公告)日：2008-05-08

申请号：AU2004307138

申请日：2004-10-21

Applicant: QUALCOMM INC

Inventor： LANE RICHARD D ,  VIJAYAN RAJIV ,  MURALI RAMASWAMY ,  WALKER KENT G

IPC: H04L12/28 ,  H04B7/00 ,  H04B7/216 ,  H04L20060101

公开(公告)号：BRPI0511736A

公开(公告)日：2008-01-08

申请号：BRPI0511736

申请日：2005-06-03

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  MALLADI DURGA P ,  STAMOULIS ANASTASIOS ,  MANTRAVADI ASHOK ,  MURALI RAMASWAMY

IPC: H04L27/26 ,  H04L1/00 ,  H04L5/02 ,  H04W88/10 ,  H04W92/10

Abstract: Frame structures and transmission techniques for a wireless communication system are described. In one frame structure, a super-frame includes multiple outer-frames, and each outer-frame includes multiple frames, and each frame includes multiple time slots. The time slots in each super-frame are allocated for downlink and uplink and for different radio technologies (e.g., W-CDMA and OFDM) based on loading. Each physical channel is allocated at least one time slot in at least one frame of each outer-frame in the super-frame. An OFDM waveform is generated for each downlink OFDM slot and multiplexed onto the slot. A W-CDMA waveform is generated for each downlink W-CDMA slot and multiplexed onto the slot. A modulated signal is generated for the multiplexed W-CDMA and OFDM waveforms and transmitted on the downlink. Each physical channel is transmitted in bursts. The slot allocation and coding and modulation for each physical channel can change for each super-frame.

公开(公告)号：NO20070896A

公开(公告)日：2007-04-30

申请号：NO20070896

申请日：2007-02-16

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  LING FUYUN ,  MURALI RAMASWAMY ,  WANG MICHAEL MAO

IPC: H04L27/28 ,  H03M13/27

CPC classification number: H04L1/0071 ,  H03M13/27 ,  H03M13/271 ,  H03M13/2757 ,  H03M13/276 ,  H03M13/2771 ,  H04L1/00 ,  H04L1/0041 ,  H04L1/0066 ,  H04L1/007 ,  H04L5/0007 ,  H04L5/0042 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0083 ,  H04L25/0226 ,  H04L27/2607 ,  H04L27/261 ,  H04L27/2626 ,  H04L27/2656 ,  H04L27/2662

公开(公告)号：MXPA06013968A

公开(公告)日：2007-03-15

申请号：MXPA06013968

申请日：2005-06-03

Applicant: QUALCOMM INC

Inventor： AGRAWAL AVNEESH ,  MALLADI DURGA P ,  MURALI RAMASWAMY ,  MANTRAVADI ASHOK ,  STAMOULIS ANASTASIOS

IPC: H04L1/00 ,  H04L5/02 ,  H04L27/26 ,  H04L29/00 ,  H04W88/10 ,  H04W92/10

Abstract: Para transmitir informacion de sobrecarga para servicios de emision y multi-emision en un sistema que utiliza multiples tecnologias de radio, inicialmente se determinan las ranuras de tiempo utilizadas para OFDM en una super-trama; se genera la informacion de sobrecarga para multiples corrientes que van a ser enviadas en las ranuras de tiempo utilizadas para OFDM; la informacion de sobrecarga transmite las ranuras de tiempo y la codificacion y modulacion empleadas para las corrientes y se puede proporcionar en varias formas; se pueden formar multiples registros para la informacion de sobrecarga para las corrientes; la informacion de sobrecarga para las corrientes es procesada y multiplexada por division de tiempo con los datos para las corrientes en la super-trama; la informacion, que indica las ranuras de tiempo empleadas para OFDM en la super-trama, puede ser enviada por separado o incluida en la informacion de sobrecarga; tambien se puede anexar un indicador a cada corriente para indicar si existe algun cambio en la informacion de sobrecarga para la corriente en la siguiente super-trama.

公开(公告)号：BRPI0414065A

公开(公告)日：2006-10-24

申请号：BRPI0414065

申请日：2004-09-02

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  KHANDEKAR AAMOD ,  LING FUYUN ,  WALKER KENT ,  MURALI RAMASWAMY

IPC: H04H20/00 ,  H04J3/24 ,  H04L1/00 ,  H04L5/02 ,  H04L5/06 ,  H04L25/02 ,  H04L27/26 ,  H04W4/06 ,  H04W28/06 ,  H04W72/04 ,  H04J11/00 ,  H04Q7/00 ,  H04B7/00 ,  H04L12/28

Abstract: Techniques for multiplexing and transmitting multiple data streams are described. Transmission of the multiple data streams occurs in “super-frames”. Each super-frame has a predetermined time duration and is further divided into multiple (e.g., four) frames. Each data block for each data stream is outer encoded to generate a corresponding code block. Each code block is partitioned into multiple subblocks, and each data packet in each code block is inner encoded and modulated to generate modulation symbols for the packet. The multiple subblocks for each code block are transmitted in the multiple frames of the same super-frame, one subblock per frame. Each data stream is allocated a number of transmission units in each super-frame and is assigned specific transmission units to achieve efficient packing. A wireless device can select and receive individual data streams.