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    UNIVERSAL RESERVATION SIGNAL FOR MEDIUM SHARING
    181.
    发明申请
    UNIVERSAL RESERVATION SIGNAL FOR MEDIUM SHARING 审中-公开

    公开(公告)号：US20190014507A1

    公开(公告)日：2019-01-10

    申请号：US15960883

    申请日：2018-04-24

    Applicant: QUALCOMM Incorporated

    Inventor： Xiaoxia Zhang ,  Bin Tian ,  Jing Sun ,  Taesang Yoo ,  Aleksandar Damnjanovic ,  Tamer Kadous ,  Yongbin Wei ,  Hemanth Sampath ,  Sameer Vermani

    IPC: H04W28/26 ,  H04W16/14

    Abstract: Wireless communications systems and methods related to signaling medium reservation information medium sharing among multiple radio technologies (RATs) are provided. A first wireless communication device communicates, with a second wireless communication device, a reservation signal to reserve a transmission opportunity (TXOP) in a spectrum. The spectrum is shared by multiple RATs. The reservation signal includes a plurality of first waveform sequences indicating medium reservation information detectable by the multiple RATs. The first wireless communication device and the second wireless communication device are associated with a first RAT of the multiple RATs. The first wireless communication device communicates, with the second wireless communication device using the first RAT, a communication signal in the spectrum during the TXOP.

    Protocols for enabling mode 1 and mode 2 devices in TV white space networks
    183.
    发明授权
    Protocols for enabling mode 1 and mode 2 devices in TV white space networks 有权

    公开(公告)号：US10051626B2

    公开(公告)日：2018-08-14

    申请号：US14469326

    申请日：2014-08-26

    Applicant: QUALCOMM Incorporated

    Inventor： Santosh Paul Abraham ,  Avinash Jain ,  Stephen J. Shellhammer ,  Hemanth Sampath

    IPC: H04W72/04 ,  H04L5/00 ,  H04W16/14 ,  H04W88/06

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for operating in a television white space (TVWS) network. One example method generally includes receiving, at an apparatus, a message with a field indicating a current version of an unused frequency spectrum map (e.g., a white space map (WSM)), the unused frequency spectrum map indicating channels usable for wireless communications; determining whether the current version of the unused frequency spectrum map is different than a previous version of the unused frequency spectrum map; and using a channel for wireless communications based on the determination. Another example method generally includes accessing a database of available channels for a current location of an apparatus via a neighboring portable or fixed enabling apparatus and enabling one or more portable dependent apparatuses for the wireless communications via one or more of the available channels.

    Systems and methods for transmitting pilot tones
    189.
    发明授权
    Systems and methods for transmitting pilot tones 有权

    公开(公告)号：US09774481B2

    公开(公告)日：2017-09-26

    申请号：US13706816

    申请日：2012-12-06

    Applicant: QUALCOMM Incorporated

    Inventor： Lin Yang ,  Didier Johannes Richard Van Nee ,  Hemanth Sampath ,  Sameer Vermani ,  Tao Tian

    IPC: H04L27/10 ,  H04L5/00

    CPC classification number: H04L27/10 ,  H04L5/0048

    Abstract: Systems and methods for using travelling pilots for channel estimation are described herein. In one aspect, wireless communications apparatus is described that comprises a processor configured to divide a plurality of tones on which pilot signals are to be transmitted among a plurality of symbols, wherein each symbol includes less than all of the plurality of tones and the plurality of symbols includes at least a subset of the plurality of tones. The wireless communication apparatus further comprises a transmitter configured to transmit, during a given symbol, pilot signals on the tones included in the given symbol, wherein the tones over which the pilot signals are transmitted are changed from symbol to symbol.

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