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    Virtual cluster group based uplink control channel
    114.
    发明授权
    Virtual cluster group based uplink control channel 有权

    公开(公告)号：US10264600B2

    公开(公告)日：2019-04-16

    申请号：US15411904

    申请日：2017-01-20

    Applicant: QUALCOMM Incorporated

    Inventor： Yi Huang ,  Tao Luo ,  Krishna Kiran Mukkavilli ,  Wei Zeng

    IPC: H04B7/00 ,  H04W72/12 ,  H04W72/04 ,  H04L5/00

    Abstract: Aspects of the present disclosure provide a scheduling entity in communication with a set of scheduled entities within a wireless communication network. The scheduling entity groups a plurality of tones into uplink clusters, where each uplink cluster includes one or more adjacent tones. In addition, the scheduling entity maps a first set of uplink clusters to a first virtual cluster group (VCG) for an uplink control channel, assigns the first VCG to a first scheduled entity of the set of one or more scheduled entities, provides a first VCG index identifying the first VCG to the first scheduled entity and receives uplink control information from the first scheduled entity on the first VCG over the uplink control channel.

    Reciprocal channel sounding reference signal allocation and configuration
    115.
    发明授权
    Reciprocal channel sounding reference signal allocation and configuration 有权

    公开(公告)号：US10263745B2

    公开(公告)日：2019-04-16

    申请号：US14866794

    申请日：2015-09-25

    Applicant: QUALCOMM Incorporated

    Inventor： Joseph Binamira Soriaga ,  Jing Jiang ,  Krishna Kiran Mukkavilli ,  Naga Bhushan ,  Tingfang Ji ,  John Edward Smee

    IPC: H04L5/00 ,  H04L25/02 ,  H04W72/04 ,  H04L25/03 ,  H04B7/06 ,  H04B7/0452

    Abstract: Systems and techniques are disclosed to enhance the efficiency of available bandwidth between UEs and base stations. A UE transmits a sounding reference signal to the base station, which characterizes the uplink channel based on the SRS received and, using reciprocity, applies the channel characterization for the downlink channel. The base station may form the beam to the UE based on the uplink channel information obtained from the SRS. As the downlink channel changes the base station needs updated information to maintain its beamforming, meaning it needs a new SRS. Transmission of the SRS takes resources; to minimize this, the UE or the base station can determine a period during which the downlink channel will predictably remain coherent and set up a schedule for sending SRS. Alternatively, the UE or the base station can determine on demand that the channel is losing coherence and initiate an on demand SRS.

    Phase noise estimation
    119.
    发明授权
    Phase noise estimation 有权

    公开(公告)号：US10129052B2

    公开(公告)日：2018-11-13

    申请号：US15000657

    申请日：2016-01-19

    Applicant: QUALCOMM Incorporated

    Inventor： Sundar Subramanian ,  Muhammad Nazmul Islam ,  Juergen Cezanne ,  Junyi Li ,  Krishna Kiran Mukkavilli

    IPC: H03K9/00 ,  H04L25/02 ,  H04L5/00 ,  H04B1/10 ,  H04L27/00 ,  H04L27/26 ,  H04L27/36

    Abstract: Methods, systems, devices, and apparatuses are described for phase noise estimation. A transmitting device identifies a phase noise metric associated with a receiving device. The phase noise metric provides an indication of the expected phase noise for the receiving device. The transmitting device selects a plurality of pilot tones adjacent to each other and a plurality of null tones for a transmission to the receiving device based on the phase noise metric. The plurality of null tones may be adjacent to and on both sides of the pilot tones in the frequency domain. The transmitting device identifies its own phase noise metric and select the pilot tones adjacent to each other and plurality of null tones in further consideration of its own phase noise metric. The receiving device may use the pilot tones and plurality of adjacent null tones to determine a phase noise estimation for the transmission.

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