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    TIME DIVISION DUPLEXING TECHNIQUES IN SHARED RADIO FREQUENCY SPECTRUM
    171.
    发明申请
    TIME DIVISION DUPLEXING TECHNIQUES IN SHARED RADIO FREQUENCY SPECTRUM 审中-公开

    公开(公告)号：US20200021423A1

    公开(公告)日：2020-01-16

    申请号：US16507366

    申请日：2019-07-10

    Applicant: QUALCOMM Incorporated

    Inventor： Chih-Hao Liu ,  Xiaoxia Zhang ,  Tamer Kadous ,  Srinivas Yerramalli

    IPC: H04L5/14 ,  H04W72/04 ,  H04W74/08 ,  H04L27/26 ,  H04W4/06 ,  H04L5/00 ,  H04L1/18

    Abstract: Methods, systems, and devices for wireless communications are described that provide for selecting a time division duplexing (TDD) frame structure for communicating with a user equipment (UE) via a shared radio frequency spectrum in which a listen before talk (LBT) procedure is performed prior to transmitting. A frame based equipment (FBE) frame starting location for FBE frames is determined where the FBE frame starting location is offset from a starting location of the TDD frame structure and spans successive TDD frames. In some cases, the TDD frame structure may be configured such that the UE does not need to perform an LBT procedure, and thus the LBT process may be transparent to the UE, allowing UEs that are not specially configured to operate using an LBT procedure to use the shared radio frequency spectrum.

    PRIORITY CLASS INDICATION FOR BASE STATION MCOT SHARING FOR AUL
    173.
    发明申请
    PRIORITY CLASS INDICATION FOR BASE STATION MCOT SHARING FOR AUL 审中-公开

    公开(公告)号：US20190261382A1

    公开(公告)日：2019-08-22

    申请号：US16276101

    申请日：2019-02-14

    Applicant: QUALCOMM INCORPORATED

    Inventor： Qingjiang Tian ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Chih-Hao Liu

    IPC: H04W72/10 ,  H04W72/04

    Abstract: Indication of transmission priority class is disclosed for sharing a base station's maximum channel occupancy time (MCOT) for use in autonomous uplink (AUL). Aspects of the disclosure provide for implicitly sharing the MCOT by providing an indication of transmission opportunity (TxOP) length. A serving base station sends an indication of a current TxOP length in control signals to a user equipment (UE). The UE may then infer a set of potential transmission priorities used by the serving base station according to the TxOP length, as TxOP length may relate to the MCOT, which itself may be associated with a particular transmission priority class. The UE may then, conservatively, select the highest transmission priority of the set of potential transmission priorities for autonomously transmitting any uplink data having at least the selected highest transmission priority within configured AUL resource of the current TxOP.

    NESTED FREQUENCY HOPPING FOR DATA TRANSMISSION
    174.
    发明申请
    NESTED FREQUENCY HOPPING FOR DATA TRANSMISSION 审中-公开

    公开(公告)号：US20190238177A1

    公开(公告)日：2019-08-01

    申请号：US16255645

    申请日：2019-01-23

    Applicant: QUALCOMM Incorporated

    Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

    IPC: H04B1/713 ,  H04B7/26 ,  H04W72/04

    CPC classification number: H04B1/713 ,  H04B7/2643 ,  H04W72/044

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.

    TECHNIQUES FOR MULTIPLEXING OF UPLINK CHANNELS IN A SHARED RADIO FREQUENCY SPECTRUM BAND
    175.
    发明申请
    TECHNIQUES FOR MULTIPLEXING OF UPLINK CHANNELS IN A SHARED RADIO FREQUENCY SPECTRUM BAND 审中-公开

    公开(公告)号：US20190182826A1

    公开(公告)日：2019-06-13

    申请号：US16212402

    申请日：2018-12-06

    Applicant: QUALCOMM Incorporated

    Inventor： Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

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

    Abstract: Methods, systems, and devices for wireless communications are described for multiplexing of uplink channels in a shared radio frequency spectrum band. Techniques may provide for segmenting uplink resources into multiple different sets of uplink resources, each set of uplink resources having one or more associated uplink control channel resources. A base station or user equipment (UE) may select a set of uplink resources from the multiple sets of uplink resources for uplink transmissions from the UE based on a location of the uplink control channel resources of the set of uplink resources relative to other allocated uplink resources of the UE. Uplink control information (UCI) may be multiplexed with one or more uplink shared channel transmissions of a UE for transmission to a base station in certain circumstances.

    LOGICAL CHANNEL HOPPING SEQUENCE DESIGN
    176.
    发明申请
    LOGICAL CHANNEL HOPPING SEQUENCE DESIGN 审中-公开

    公开(公告)号：US20190149190A1

    公开(公告)日：2019-05-16

    申请号：US16173945

    申请日：2018-10-29

    Applicant: QUALCOMM Incorporated

    Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

    IPC: H04B1/7143 ,  H04B1/7156 ,  H04W4/02 ,  H04W48/16

    Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may identify synchronization signals and a set of frequency hopping channels for communications as part of a discovery reference signal (DRS) in an anchor channel. The set of frequency hopping channels may include a sequence to indicate an order for utilizing each hopping channel of the set of hopping channels. In some cases, the hopping sequence may be a pseudo random sequence. Additionally, the hopping sequence may defined such that a non-repeating hopping sequence or pattern which visits all hopping frequencies before revisiting the same frequency is utilized. As such, each hopping channel may be utilized an equal number of times within a period of time and have an approximately equal occupancy time to the other hopping channels.

    Paging user equipments on a shared communication medium
    178.
    发明授权
    Paging user equipments on a shared communication medium 有权

    公开(公告)号：US10178649B2

    公开(公告)日：2019-01-08

    申请号：US16048218

    申请日：2018-07-27

    Applicant: QUALCOMM Incorporated

    Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Adel Kadous

    IPC: H04W68/02 ,  H04W72/04 ,  H04L5/00 ,  H04W8/00 ,  H04W16/14 ,  H04W28/04

    Abstract: In an embodiment, an apparatus (e.g., eNB) pages UEs on a shared communication. The apparatus obtains paging message(s) for transmission to UEs with different coverage levels. The apparatus transmits an extended common ePDCCH, followed by a paging ePDCCH, followed by repetitive transmissions of the paging message(s) over a plurality of PDSCH subframes. In a further embodiment, the apparatus obtains first and second sets of paging messages for transmission to different paging groups. The apparatus establishes non-overlapping POWs for the first and second paging groups to avoid a paging ePDCCH collision.

    SYSTEM ACQUISITION IN A SHARED RADIO FREQUENCY SPECTRUM BAND
    180.
    发明申请
    SYSTEM ACQUISITION IN A SHARED RADIO FREQUENCY SPECTRUM BAND 审中-公开

    公开(公告)号：US20180343676A1

    公开(公告)日：2018-11-29

    申请号：US15987511

    申请日：2018-05-23

    Applicant: QUALCOMM Incorporated

    Inventor： Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

    IPC: H04W74/08 ,  H04W16/14 ,  H04W56/00

    Abstract: Methods, systems, and devices for wireless communications are described. In some wireless systems utilizing shared radio frequency spectrum bands, base stations may operate in different listen before talk (LBT) modes. For example, a base station may operate in an LBT enabled mode or a non-LBT enabled mode. A UE may perform system acquisition with the base station based on receiving acquisition signals (e.g., synchronization signals and physical broadcast channel (PBCH) signals) from the base station. These acquisition signals may depend on the LBT mode of the base station. For example, the frame timing and number of subframes for the acquisition signals may be based on the LBT mode of the base station. In some cases, a base station may adaptively switch LBT modes, and the UE may re-synchronize with the base station based on an LBT configuration period or a paging message from the base station.

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