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8 条记录 (耗时 0.029 秒)

    Methods and systems for beamforming for device-to-device communication
    1.
    发明授权
    Methods and systems for beamforming for device-to-device communication 有权

    公开(公告)号：US10292163B2

    公开(公告)日：2019-05-14

    申请号：US15360756

    申请日：2016-11-23

    申请人： Xuemin Shen ,  Miao Wang ,  Qinghua Shen ,  Osama Aboul-Magd ,  Yan Xin ,  Kwok Shum Au ,  Sheng Sun

    发明人： Xuemin Shen ,  Miao Wang ,  Qinghua Shen ,  Osama Aboul-Magd ,  Yan Xin ,  Kwok Shum Au ,  Sheng Sun

    IPC分类号： H04W72/04 ,  H04W76/14 ,  H04W84/12

    摘要： Methods and systems for device-to-device (D2D) communication between a first device and a second device. The first device receives a communication transmitted by the second device, where the communication is intended for another recipient other than the first device. The communication provides information for the first device to determine a preferred transmit sector to be used by the second device for the D2D communication. The first device transmits a communication to the second device that provides information indentifying the preferred transmit sector to be used by the second device. As a receiver in the D2D communication, the first device receives data from the second device, transmitted on the preferred transmit sector. As a transmitter in the D2D communication, the first device transmits data to the second device on a preferred transmit sector identified in another communication received from the second device.

    Method, apparatus and system for medium access control
    5.
    发明授权
    Method, apparatus and system for medium access control 有权

    公开(公告)号：US11363629B2

    公开(公告)日：2022-06-14

    申请号：US16945334

    申请日：2020-07-31

    申请人： Huawei Technologies Canada Co., Ltd. ,  Xuemin Shen ,  Weihua Zhuang ,  Jie Gao

    发明人： Weihua Zhuang ,  Jie Gao ,  Xuemin Shen ,  Xu Li

    IPC分类号： H04W74/08 ,  H04W74/04 ,  H04W72/04 ,  H04W74/00

    摘要： A method, apparatus and system for medium access control is provided. Time slots configured to include mini slots at the beginnings thereof. Devices are assigned time slot, mini slot combinations as transmission opportunities. A device can attempt to use a transmission opportunity when it has a packet to send, by beginning data transmission in its assigned slot and mini slot and potentially continuing the transmission up until the end of the assigned slot. If another device is already transmitting in the assigned slot, the device refrains from using its transmission opportunity. Higher priority devices can be assigned transmission opportunities corresponding to earlier mini slots within a slot. In some embodiments, multiple devices can be assigned the same transmission opportunity and a collision detection mechanism can be employed. In some embodiments, all devices detect if a slot is idle and advance the beginning of the next slot upon such detection.

    Method, apparatus and system for medium access control
    7.
    发明授权
    Method, apparatus and system for medium access control 有权

    公开(公告)号：US11991744B2

    公开(公告)日：2024-05-21

    申请号：US17837141

    申请日：2022-06-10

    申请人： Huawei Technologies Canada Co., Ltd. ,  Xuemin Shen ,  Weihua Zhuang ,  Jie Gao

    发明人： Weihua Zhuang ,  Jie Gao ,  Xuemin Shen ,  Xu Li

    IPC分类号： H04W74/08 ,  H04W72/0446 ,  H04W74/00 ,  H04W74/04 ,  H04W74/0816

    CPC分类号： H04W74/04 ,  H04W72/0446 ,  H04W74/006 ,  H04W74/0816

    摘要： A method, apparatus and system for medium access control is provided. Time slots configured to include mini slots at the beginnings thereof. Devices are assigned time slot, mini slot combinations as transmission opportunities. A device can attempt to use a transmission opportunity when it has a packet to send, by beginning data transmission in its assigned slot and mini slot and potentially continuing the transmission up until the end of the assigned slot. If another device is already transmitting in the assigned slot, the device refrains from using its transmission opportunity. Higher priority devices can be assigned transmission opportunities corresponding to earlier mini slots within a slot. In some embodiments, multiple devices can be assigned the same transmission opportunity and a collision detection mechanism can be employed. In some embodiments, all devices detect if a slot is idle and advance the beginning of the next slot upon such detection.

    System and method for automotive Wi-Fi access and connection
    8.
    发明授权
    System and method for automotive Wi-Fi access and connection 有权

    公开(公告)号：US11026072B2

    公开(公告)日：2021-06-01

    申请号：US16346023

    申请日：2017-10-31

    申请人： Xuemin Shen ,  Wenchao Xu ,  Haibo Zhou

    发明人： Xuemin Shen ,  Wenchao Xu ,  Haibo Zhou

    IPC分类号： H04W4/44 ,  H04W4/48 ,  H04W76/14 ,  H04W8/26 ,  H04W28/22 ,  H04W48/12 ,  H04W72/12 ,  H04W76/10 ,  H04W12/062 ,  H04W12/71

    摘要： A system and method for providing improved in-vehicle wireless connection to roadside access devices for connection to network is described. The system includes an in-vehicle device, one or more roadside access devices, a cloud management server, and backhaul Internet access connection. The roadside access device includes in its broadcasted beacon frame message information required by an in-vehicle device to set network connection parameters. The in-vehicle device automatically connects to roadside access devices for access to the network, using information included in the broadcasted beacon frame message. The in-vehicle device also manages and categorizes data traffic, maps user priority assigned to data traffic to network transmission priority, and adapts transmission rates to network condition, such as backhaul network bandwidth available, number of mobile users connected to the same roadside access devices and data traffic load, among others.