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    PILOT TRANSMISSION BY RELAY STATIONS IN A MULTIHOP RELAY COMMUNICATION SYSTEM
    21.
    发明专利
    PILOT TRANSMISSION BY RELAY STATIONS IN A MULTIHOP RELAY COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2987839C

    公开(公告)日：2019-05-07

    申请号：CA2987839

    申请日：2008-03-14

    Applicant: QUALCOMM INC

    Inventor： DAYAL PRANAV ,  JI TINGFANG

    IPC: H04W48/12 ,  H04B7/155 ,  H04J11/00 ,  H04W24/00 ,  H04W48/08 ,  H04W84/04 ,  H04W88/04

    Abstract: Techniques to support multihop relay in a wireless communication system are described. In an aspect, a relay station receives data and a first pilot from an upstream station, e.g., a base station or another relay station. The relay station derives a channel estimate based on the first pilot and performs detection for the data based on the channel estimate. The relay station resends the data and sends a second pilot to a downstream station, e.g., a subscriber station or another relay station. Each pilot may be sent in accordance with a pilot format selected for that pilot. The first and second pilots may be sent using the same or different pilot formats. The relay station may receive channel information from the second station and may forward the channel information to the first station and/or select a rate for data transmission to the second station based on the channel information.

    Potencia de transmisión reducida para la coexistencia de radios inalámbricas
    22.
    发明专利
    Potencia de transmisión reducida para la coexistencia de radios inalámbricas 未知

    公开(公告)号：ES2661226T3

    公开(公告)日：2018-03-28

    申请号：ES11764647

    申请日：2011-09-22

    Applicant: QUALCOMM INC

    Inventor： KADOUS TAMER ADEL ,  HE XIAOYIN ,  DAYAL PRANAV ,  MANTRAVADI ASHOK ,  WANG JIBING

    IPC: H04W52/16 ,  H04W16/14 ,  H04W52/18 ,  H04W52/38

    Abstract: Un procedimiento de comunicaciones inalámbricas, que comprende: determinar (1102) una métrica de rendimiento de una radio agresora (620a-n) y una métrica de rendimiento de una radio víctima (620a-n); establecer dinámicamente (1104) una potencia de transmisión máxima de la radio agresora (620a-n) basada en al menos una de la métrica de rendimiento de la radio víctima (620a-n) y la métrica de rendimiento de la radio agresora (620a-n) para cumplir con los criterios de rendimiento objetivos para la radio víctima (620a-n) y la radio agresora (620a-n); y enviar un informe de un espacio entre una potencia de transmisión actual del agresor y una potencia de transmisión máxima del agresor usada para controlar la potencia y la velocidad, basándose en la potencia de transmisión máxima del agresor.

    PILOT TRANSMISSION BY RELAY STATIONS IN A MULTIHOP RELAY COMMUNICATION SYSTEM
    23.
    发明专利
    PILOT TRANSMISSION BY RELAY STATIONS IN A MULTIHOP RELAY COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2679221C

    公开(公告)日：2017-01-03

    申请号：CA2679221

    申请日：2008-03-14

    Applicant: QUALCOMM INC

    Inventor： DAYAL PRANAV ,  JI TINGFANG

    IPC: H04L25/02 ,  H04L1/00 ,  H04L5/02 ,  H04L27/26 ,  H04W48/08 ,  H04W48/12 ,  H04W84/04 ,  H04W88/04

    Abstract: Techniques to support multihop relay in a wireless communication system are described. In an aspect, a relay station receives data and a first pilot from an upstream station, e.g., a base station or another relay station. The relay station derives a channel estimate based on the first pilot and performs detection for the data based on the channel estimate. The relay station resends the data and sends a second pilot to a downstream station, e.g., a subscriber station or another relay station. Each pilot may be sent in accordance with a pilot format selected for that pilot. The first and second pilots may be sent using the same or different pilot formats. The relay station may receive channel information from the second station and may forward the channel information to the first station and/or select a rate for data transmission to the second station based on the channel information.

    POWER CONTROL MESSAGING SCHEME
    25.
    发明专利
    POWER CONTROL MESSAGING SCHEME 未知

    公开(公告)号：CA2678590C

    公开(公告)日：2015-02-03

    申请号：CA2678590

    申请日：2008-03-07

    Applicant: QUALCOMM INC

    Inventor： DAYAL PRANAV ,  JI TINGFANG

    IPC: H04B7/005 ,  H04W52/24

    Abstract: In a power control messaging scheme for wireless communication, a wireless node sends vectorized information to another wireless node that uses the information to control its transmit power. In some aspects, the vectorized information may relate to interference observed at a wireless node. In some aspects, the vectorized information may relate to power adjustment offsets. In some aspects, the information may be vectorized based on one or more of different quality of service classes, different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes. In some aspects, a wireless node transmits a power control message via an uplink map in an assignment message.

    DATA TRANSMISSION AND POWER CONTROL IN A MULTIHOP RELAY COMMUNICATION SYSTEM
    27.
    发明专利
    DATA TRANSMISSION AND POWER CONTROL IN A MULTIHOP RELAY COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2678411C

    公开(公告)日：2014-07-15

    申请号：CA2678411

    申请日：2008-03-14

    Applicant: QUALCOMM INC

    Inventor： DAYAL PRANAV ,  JI TINGFANG

    IPC: H04L1/00

    Abstract: Techniques for transmitting data with distributed and centralized scheduling in a multihop relay communication system are described. For distributed scheduling, a relay station may generate and send first channel quality information (CQI) to a base station and receive second CQI from a subscriber station. The relay station may receive data sent by the base station based on the first CQI and may resend the data to the subscriber station based on the second CQI. For centralized scheduling, the relay station may generate first CQI for the base station, receive second CQI from the subscriber station, and send both CQIs to the base station. The relay station may receive data sent by the base station based on the first CQI and may resend the data to the subscriber station based on a scheduling decision determined based on the second CQI. Techniques for distributed and centralized power control are also described.

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