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公开(公告)号：CA2543415A1
公开(公告)日：2005-05-12
申请号：CA2543415
申请日：2004-10-22
Applicant: QUALCOMM INC
Inventor： WALKER KENT G , MANTRAVADI ASHOK , MURALI RAMASWAMY , LING FUYUN , SUBRAMANIAM ANAND D , VIJAYAN RAJIV
Abstract: A method of broadcasting data in a wireless broadcast network, comprising multiplexing data for a wide-area transmission onto a first transmission span, the wide-area transmission being sent from a plurality of transmitters in the network; multiplexing data for a local transmission onto a second transmission span, wherein the multiplexing is onto frequency subbands pseudo-randomly selected from among all usable frequency subbands and the local transmission being sent from a subset of the plurality of transmitters; selecting the first and second transmission spans based on an amount of data to broadcast for the wide-area transmission and an amount of data to broadcast for the local transmission; and broadcasting the local and wide-area transmissions via a wireless link, wherein the data for the wide-area transmission and the data for the local transmission are time division multiplexed (TDM) at each base station, and wherein the first and second transmission spans are first and second time segments, respectively, of a frame of a predetermined time duration as well as a corresponding system.
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公开(公告)号：CA2540026A1
公开(公告)日：2005-04-07
申请号：CA2540026
申请日：2004-09-27
Applicant: QUALCOMM INC
Inventor： MANTRAVADI ASHOK , AGRAWAL AVNEESH
Abstract: A method of transmitting a base stream of data and an enhancement stream of data in a wireless communication system, comprising: coding and modulating the base stream to obtain a first data symbol stream, wherein the base stream is designated to be received by a plurality of receiving entities; coding and modulating the enhancement stream to obtain a second data symbol stream, wherein the enhancement stream is designated to be received by at least one receiving entity, and wherein the coding and modulating for the base and enhancement streams are not dependent on channel realizations of receiving entities for the base and enhancement streams; processing the first data symbol stream in accordance with a first spatial processing scheme to obtain a first plurality of symbol substreams; processing the second data symbol stream in accordance with a second spatial processing scheme to obtain a second plurality of symbol substreams, wherein the processing for the first and second data symbol streams is not dependent on the channel realizations of the receiving entities for the base and enhancement streams; and combining the first plurality of symbol substreams with the second plurality of symbol substreams to obtain a plurality of transmit symbol streams for transmission from a plurality of transmit antennas.
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公开(公告)号：PL1751906T3
公开(公告)日：2021-04-19
申请号：PL05756553
申请日：2005-06-03
Applicant: QUALCOMM INC
Inventor： AGRAWAL AVNEESH , MALLADI DURGA P , STAMOULIS ANASTASIOS , MANTRAVADI ASHOK , MURALI RAMASWAMY
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公开(公告)号：MY176973A
公开(公告)日：2020-08-28
申请号：MYPI20052547
申请日：2005-06-03
Applicant: QUALCOMM INC
Inventor： MURALI RAMASWAMY , AGRAWAL AVNEESH , MALLADI DURGA P , STAMOULIS ANASTASIOS , MANTRAVADI ASHOK
Abstract: Techniques for transmitting data in a wireless communication system (100) are described. Physical channels to be sent in a super-frame are identified and allocated time slots in the super-frame. The coding and modulation for each physical channel are selected based on its capacity. The data for each physical channel is selectively encoded based on an outer code rate, e.g., for a Reed-Solomon code, and further encoded based on an inner code rate, e.g., for a Turbo code. The encoded data for each physical channel is mapped to modulation symbols based on a selected modulation scheme. The modulation symbols for each physical channel are further processed (e.g., OFDM modulated) and multiplexed onto the time slots allocated to the physical channel. Data to be sent using another radio technology (e.g., W-CDMA) is also processed and multiplexed onto time slots allocated for this radio technology.
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公开(公告)号：BR112013018570A2
公开(公告)日：2016-09-27
申请号：BR112013018570
申请日：2012-01-18
Applicant: QUALCOMM INC
Inventor： SADEK AHMED K , MANTRAVADI ASHOK , DAYAL PRANAV , PRAKASH RAJAT , KADOUS TAMER ADEL
IPC: H04W72/12
Abstract: método e aparelho para facilitar suporte para coexistência multi-rádio para aperfeiçoar o desempenho em dispositivos capazes de comunicação utilizando múltiplas tecnologias de rádio acesso (rats), um padrão de lacuna pode ser construído no qual uma primeira rat é silenciada durante certos tempos para permitir que uma segunda rat opere sem interferência. padrões de lacuna podem ser construídos com base em restrições de cronograma, tal como programação de concessão e desempenho harq, ou com base em níveis desejados de desempenho de uma ou mais das rats. padrões de lacuna podem ser selecionados por um equipamento de usuário ou estação base. padrões de lacuna podem ser selecionados para proteger informação em certos subquadros. aos padrões de lacuna potenciais podem ser atribuídos pesos indicando a propriedade de intenção dos mesmos.
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Patent Agency Ranking
公开(公告)号：IN4355CHN2014A
公开(公告)日：2015-09-04
申请号：IN4355CHN2014
申请日：2014-06-12
Applicant: QUALCOMM INC
Inventor： SADEK AHMED K , DAYAL PRANAV , MANTRAVADI ASHOK
IPC: H04W16/14
Abstract: A user equipment (UE) may reduce coexistence issues with one or more radio access technologies (RATs) caused by a bursty interference. The bursty interference may be detected by detecting a number of modes in a measured signal sample and determining when a signal contains a multi modal distribution based at least in part on the detecting. A coexistence indication is created based at least in part on the determining.
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公开(公告)号：CA2569457C
公开(公告)日：2012-07-31
申请号：CA2569457
申请日：2005-06-03
Applicant: QUALCOMM INC
Inventor： AGRAWAL AVNEESH , MALLADI DURGA P , STAMOULIS ANASTASIOS , MANTRAVADI ASHOK , MURALI RAMASWAMY
Abstract: To transmit data in a manner to mitigate the deleterious effects of delay spread, the expected coverage areas for multiple transmissions to be sent in multiple time slots are initially determined. Cyclic prefix lengths for these transmissions are selected based on the expected coverage areas. The cyclic prefix length for each transmission may be selected from among a set of allowed cyclic prefix lengths based on the expected coverage area for that transmission, the pilot staggering used for the transmission, and so on. For example, a shorter cyclic prefix length may be selected for each local transmission, and a longer cyclic prefix length may be selected for each wide-area transmission. The selected cyclic prefix lengths may be signaled to the terminals. The transmissions are processed (e.g., OFDM modulated) based on the selected cyclic prefix lengths. The cyclic prefix lengths may be selected periodically, e.g., in each super-frame.
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48.发明专利
公开(公告)号：ES2347250T3
公开(公告)日：2010-10-27
申请号：ES04789175
申请日：2004-09-27
Applicant: QUALCOMM INC
Inventor： MANTRAVADI ASHOK , AGRAWAL AVNEESH
Abstract: Un procedimiento de transmisión de un flujo base de datos y un flujo de mejora de datos en un sistema de comunicación inalámbrica, que comprende: codificar y modular (1010) el flujo base para obtener un primer flujo de símbolos de datos, en el que el flujo base está indicado para recibirse por una pluralidad de entidades receptoras; codificar y modular (1012) el flujo de mejora para obtener un segundo flujo de símbolos de datos, en el que el flujo de mejora está indicado para recibirse por al menos una entidad receptora; procesar (1020) el primer flujo de símbolos de datos según un primer esquema de procesamiento espacial para obtener una primera pluralidad de subflujos de símbolos; procesar (1022) el segundo flujo de símbolos de datos según un segundo esquema de procesamiento espacial para obtener una segunda pluralidad de subflujos de símbolos; y combinar (1030) la primera pluralidad de subflujos de símbolos con la segunda pluralidad de subflujos de símbolos para obtener una pluralidad de flujos de símbolos de transmisión para su transmisión desde una pluralidad de antenas de transmisión, en el que uno de los esquemas de procesamiento espacial primero y segundo es un esquema de diversidad de transmisión y el otro es un esquema de multiplexación espacial.
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公开(公告)号：DE602004028146D1
公开(公告)日：2010-08-26
申请号：DE602004028146
申请日：2004-09-27
Applicant: QUALCOMM INC
Inventor： MANTRAVADI ASHOK , AGRAWAL AVNEESH
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公开(公告)号：UA91510C2
公开(公告)日：2010-08-10
申请号：UAA200700108
申请日：2005-06-03
Applicant: QUALCOMM INC
Inventor： AGRAVAL AVNISH , MALLADI DURGA P , STAMOULIS ANASTASIOS , MANTRAVADI ASHOK , MURALI RAMASVAMI
Abstract: Дляпередачиданныхспособом, которыйпозволяетснизитьнегативноевлияниеразбросазадержек, сначалаопределяютсяожидаемыезоныпокрытиядлямножественногочислапередач, которыедолжныпередаватьсяв несколькихвременныхинтервалах. Длинациклическогопрефиксадляэтихпередачвыбираетсянаосновеожидаемыхзонпокрытия. Длинациклическогопрефиксадлякаждойпередачиможетвыбиратьсяизнабораразрешенныхдлинциклическогопрефиксанаосновеожидаемойзоныпокрытияэтойпередачи, смещенияпилотногосигнала, которыйиспользуетсядляпередачи, итакдалее. Например, меньшаядлинациклическогопрефиксаможетвыбиратьсядлякаждойлокальнойперед
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