Wireless communication system with configurable cyclic prefix length

    公开(公告)号:AU2005253596C1

    公开(公告)日:2009-08-13

    申请号:AU2005253596

    申请日:2005-06-03

    Applicant: QUALCOMM INC

    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.

    ЛОГАРИФМИЧЕСКАЯ ОЦЕНКА ПРАВДПОДОБИЯ, ОСНОВАННАЯ НА ОШИБКАХ ОЦЕНКИ КАНАЛА, ОБУСЛОВЛЕННЫХ ЗАЩИТНЫМИ ПОДДИАПАЗОНАМИ

    公开(公告)号:UA87166C2

    公开(公告)日:2009-06-25

    申请号:UAA200705123

    申请日:2005-10-12

    Applicant: QUALCOMM INC

    Abstract: Заявленыметодывыполнениявыявленияи декодированияданнымспособом, которыйучитываетзащитныеподдиапазоны. Приемникполучаетсимволыконтрольныхсигналов, которыепринимаются, дляподдиапазоновконтрольныхсигналови символыданных, которыепринимаются, дляподдиапазоновданных. Вводятсяоценкиканаланаосновесимволовконтрольныхсигналов, которыепринимаются, собнуленнымиподдиапазонамиконтрольныхсигналов, заполненныминулями. Выявлениеданныхисполняетсянасимволахданных, которыепринимаются, спомощьюоценокканаладляполученияоценоксимволовданных. Вводятсяоценкишумаи ошибокоценок, обусловленныеобнуленнымиподдиапазонамиконтрольныхсигналов. ПотомвычисляютсяотношенияЛCПнаосновеоценоксимволовданных, оценокканалаи оценокшум

    ROUTING IN A MESH NETWORK
    114.
    发明专利

    公开(公告)号:CA2696281A1

    公开(公告)日:2009-03-12

    申请号:CA2696281

    申请日:2008-09-03

    Applicant: QUALCOMM INC

    Abstract: Apparatus and method for associating with any one of a plurality of access points in a mesh network including estimating a plurality of metrics for the access points, the estimated metrics being related to throughputs provided by the access points, and selecting one of the access points to associate with based on the metrics and a plurality of backhaul metrics for the access points, the backhaul metrics being related to backhaul throughputs for the access points. The backhaul metrics may be advertised by the access points.

    115.
    发明专利
    未知

    公开(公告)号:BRPI0516092A

    公开(公告)日:2008-08-19

    申请号:BRPI0516092

    申请日:2005-10-12

    Applicant: QUALCOMM INC

    Abstract: Techniques for performing data detection and decoding in a manner to account for guard subbands are described. A receiver obtains received pilot symbols for pilot subbands and received data symbols for data subbands. Channel estimates are derived based on the received pilot symbols with zeroed-out pilot subbands filled with zeros. Data detection is performed on the received data symbols with the channel estimates to obtain data symbol estimates. Estimates of noise and estimation errors due to the zeroed-out pilot subbands are derived. LLRs are then computed based on the data symbol estimates, the channel estimates, and the estimates of the noise and estimation errors. The LLRs are deinterleaved and decoded to obtain decoded data.

    116.
    发明专利
    未知

    公开(公告)号:BRPI0513528A

    公开(公告)日:2008-05-06

    申请号:BRPI0513528

    申请日:2005-07-19

    Applicant: QUALCOMM INC

    Abstract: The disclosure is directed to a mobile communication device, and method for registering with a network from a mobile communications device. A processor in the mobile device may be used to establish a network connection with a server in a network. The mobile device may also include a transceiver that receives information from the server relating to the network connection. The processor may use the information, local measurements, or both to determine whether to register with the network.

    117.
    发明专利
    未知

    公开(公告)号:BRPI0511809A

    公开(公告)日:2008-01-15

    申请号:BRPI0511809

    申请日:2005-06-03

    Applicant: QUALCOMM INC

    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.

    MEJORA DE LA PERFOMANCE DE MAC DE UNA RED DE MALLA MEDIANTE LA UTILIZACION TANTO DE UNA PROGRAMACION BASADA EN EMISOR COMO DE UNA PROGRAMACION BASADA EN RECEPTOR

    公开(公告)号:AR056716A1

    公开(公告)日:2007-10-17

    申请号:ARP060104615

    申请日:2006-10-20

    Applicant: QUALCOMM INC

    Abstract: Métodos y aparatos que facilitan la determinacion de cuándo y si implementar un mecanismos de programacion de paquetes de datos sobre la base del emisor, o un mecanismo de programacion de paquetes de datos sobre la base del receptor, basado en uno o más factores de programacion. Por ejemplo, un nodo emisor y un nodo receptor puede comunicarse entre si a efectos de permitir la determinacion de cuál de los nodos es el más capaz de llevar a cabo las tareas de programacion, y también puede seleccionarse y ejecutarse una técnica de programacion correspondiente. De acuerdo con un aspecto, es posible comparar una cantidad de descarga descendente de datos con una cantidad de descarga ascendente de datos, en cada nodo, y puede llevarse a cabo un protocolo de programacion basada en emisor cuando la cantidad de descarga ascendente de datos es superior a la cantidad de datos de descarga descendente.

    MULTICARRIER MAC USING RESOURCE UTILIZATION MESSAGES

    公开(公告)号:CA2625968A1

    公开(公告)日:2007-05-03

    申请号:CA2625968

    申请日:2006-10-26

    Applicant: QUALCOMM INC

    Abstract: Systems and methods are disclosed that facilitate wireless communication using resource utilization messages (RUMs), in accordance with various aspects. A RUM may be generated for a first node, such as an access point or an access terminal, to indicate that a first predetermined threshold has been met or exceeded. The RUM may be weighted to indicate a degree to which a second predetermined threshold has been exceeded. The first and/or second predetermined thresholds may be associated with various parameters associated with the node, such as latency, throughput, data rate, spectral efficiency, carrier-to-interference ratio, interference-over-thermal level, etc. The RUM may then be transmitted to one or more other nodes to indicate a level of disadvantage experienced by the first node.

    REDUCING COLLISION PROBABILITY FOR VOIP PACKETS

    公开(公告)号:CA2622450A1

    公开(公告)日:2007-04-05

    申请号:CA2622450

    申请日:2006-09-28

    Applicant: QUALCOMM INC

    Abstract: A mobile communications device is described that includes a processor configured to establish a network connection with a server in a network and a data generator under the control of the processor that is configured to periodically generate a data unit at a rate having a fixed period. The mobile communications device also includes a transceiver configured to transmit, via the network connection, the data unit during one of the plurality of slots, each slot being an adjacent fractional portion of the fixed period.

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