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公开(公告)号：US10341890B2
公开(公告)日：2019-07-02
申请号：US14565085
申请日：2014-12-09
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Tao Luo , Peter Gaal , Durga Prasad Malladi , Srinivas Yerramalli , Yongbin Wei , Hao Xu , Tingfang Ji , Naga Bhushan , Aleksandar Damnjanovic
Abstract: Channel state information (CSI) feedback in long term evolution (LTE) and LTE-Advanced (LTE-A) networks including contention-based shared unlicensed spectrum is disclosed in which a user equipment (UE) identifies at least one carrier utilizing a contention based radio frequency spectrum. The UE detects a transmission signal indicative of clear channel assessment (CCA) result information for the carrier and determines whether a reference signal for channel state information measurement is present in a subframe based on the detected transmission signal. The UE would transmit a measurement report based on this presence determination of the reference signal.
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公开(公告)号：US10341061B2
公开(公告)日：2019-07-02
申请号：US15444875
申请日：2017-02-28
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Shimman Arvind Patel , Yongbin Wei , Aleksandar Damnjanovic
Abstract: Systems, methods, and apparatuses are described for wireless communication, including for hybrid automatic repeat request (HARQ) feedback in a system that supports communications using transmission time intervals (TTIs) of different durations. A base station may identify a user equipment's (UE) capability to provide HARQ feedback for transmissions that use TTIs of a shorter duration relative to other TTIs supported in the system. The base station may select a HARQ timing mode based on the capability of the UE and may indicate the selected HARQ timing mode to the UE. The base station may then transmit one or more data transmissions to the UE using the reduced TTIs. The UE may respond with HARQ feedback based on the HARQ timing mode. The HARQ timing mode may be based on different response times based on the location of the data transmission within a TTI or relative to data transmission in other TTIs.
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公开(公告)号：US20190191460A1
公开(公告)日：2019-06-20
申请号：US16189795
申请日：2018-11-13
Applicant: QUALCOMM Incorporated
Inventor： Arumugam Chendamarai Kannan , Sanaz Barghi , Vinay Chande , Aleksandar Damnjanovic
CPC classification number: H04W74/0816 , H04B7/0695 , H04B17/345 , H04W16/14 , H04W16/28 , H04W24/10 , H04W48/16 , H04W72/046 , H04W72/1236 , H04W74/0808
Abstract: Methods, systems, and devices for wireless communications are described. A wireless device (e.g., a user equipment and/or base station) may select a beam configuration for a wireless transmission over a channel of a radio frequency spectrum band. The wireless device may perform a listen-before-talk (LBT) procedure on the channel using a LBT detection threshold, wherein the LBT detection threshold is based at least in part on the selected beam configuration. The wireless device may perform the wireless transmission over the channel using the selected beam configuration based at least in part on a success of the LBT procedure.
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244.发明申请公开(公告)号：US20190190679A1
公开(公告)日：2019-06-20
申请号：US16266878
申请日：2019-02-04
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Yerramalli , Tao Luo , Aleksandar Damnjanovic , Peter Gaal , Ravi Teja Sukhavasi , Xiaoxia Zhang
CPC classification number: H04L5/0055 , H04L1/1657 , H04L1/1812 , H04L1/1822 , H04L1/187 , H04W4/06 , H04W72/0406 , H04W72/0413 , H04W72/042 , H04W72/0453 , H04W74/08 , H04W74/0808 , H04W76/28
Abstract: Techniques and devices are described for wireless communication. A base station may determine a parameter associated with a transmission such as hybrid automatic repeat request (HARD) feedback, a signal-to-noise ratio, or a determination regarding whether the transmission was successfully decoded. The base station may then determine a contention window adjustment value based on the parameter. The base station may then apply weighting factor (e.g., based on the time of the transmission, a number of devices being served, aspects of the transmission parameter, etc.) to the contention window adjustment value may adjust a contention window size for a second transmission based on the weighted contention window adjustment value (and, in some cases, other weighted adjustments based on other transmissions). The base station may then perform a clear channel assessment (CCA) based on the contention window size.
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245.发明申请公开(公告)号：US20190150088A1
公开(公告)日：2019-05-16
申请号：US16187836
申请日：2018-11-12
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Xiaoxia Zhang , Taesang Yoo , Aleksandar Damnjanovic , Tamer Kadous , Yongbin Wei
Abstract: Techniques are described herein for using a signal to wake up a user equipment (UE) that is in a low-power mode in a synchronized wireless communication system operating a shared radio frequency spectrum band. Once a base station wins a contention for a transmission opportunity in the shared radio frequency spectrum band, the base station may transmit a single signal before the transmission opportunity. After receiving the signal, the UE may begin monitoring for control information (e.g., control resource sets) associated with slots in the transmission opportunity. If the control information indicates that the content of the slot is for the UE, the UE may monitor the slot for its content.
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Patent Agency Ranking
公开(公告)号：US20190150059A1
公开(公告)日：2019-05-16
申请号：US16249741
申请日：2019-01-16
Applicant: QUALCOMM Incorporated
Inventor： Madhavan Srinivasan Vajapeyam , Aleksandar Damnjanovic , Peter Gaal , Tao Luo , Amir Aminzadeh Gohari , Masato Kitazoe
IPC: H04W40/24 , H04L29/08 , H04W48/18 , H04B17/318 , H04J11/00
Abstract: Methods, systems, and devices for radio resource management (RRM) measurement and reporting for license assisted access (LAA) cells operating in unlicensed or shared frequency spectrum are described. A user equipment (UE) may receive an RRM measurement configuration including a channel occupancy parameter for measuring neighbor cells of a shared frequency band. The channel occupancy parameter may be used to determine a channel occupancy metric that may be sent to a base station for cell selection. The channel occupancy metric may include an averaged or filtered received signal strength and may be reported for serving cells and/or intra-frequency neighbor cells. A base station may further configure a UE with a discovery reference signals (DRS) measurement timing configuration (DMTC), which may include an extended DMTC search window. The UE may search for DRS transmissions from neighbor cells according to the DMTC.
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247.发明申请公开(公告)号：US20190116590A1
公开(公告)日：2019-04-18
申请号：US16218214
申请日：2018-12-12
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Aleksandar Damnjanovic , Durga Prasad Malladi , Hao Xu , Peter Gaal , Yongbin Wei , Tao Luo
Abstract: Techniques are described for wireless communication. A first method includes identifying a first interval for an uplink transmission in a shared radio frequency spectrum band; identifying a second interval for the uplink transmission; comparing the first interval with the second interval; and determining uplink resources to use for the uplink transmission based at least in part on the comparison of the first interval with the second interval. A second method includes transmitting one or more assignments of uplink resources to use for an uplink transmission in a shared radio frequency spectrum band; detecting a duration of the uplink transmission; and identifying uplink resources used for the uplink transmission based at least in part on the detecting.
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公开(公告)号：US10244399B2
公开(公告)日：2019-03-26
申请号：US15642375
申请日：2017-07-06
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Ahmed Sadek , Siddhartha Mallik , Juan Montojo , Michael Mingxi Fan
Abstract: Aspects of the disclosure relate to wireless communication systems configured to share a shared spectrum with one or more other systems (e.g., other operator networks utilizing the same radio access technology, and/or other networks utilizing different radio access technologies). Coexistence between the different systems on the shared spectrum may be provided by utilizing a technology-neutral signature waveform such as a signature sequence or discovery signal. The signature sequence may be used for resource reservation, scheduling, and coordination among disparate systems operating on a shared spectrum. Other aspects, embodiments, and features are also claimed and described.
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公开(公告)号：US20190090273A1
公开(公告)日：2019-03-21
申请号：US16046500
申请日：2018-07-26
Applicant: QUALCOMM Incorporated
Inventor： Taesang Yoo , Xiaoxia Zhang , Jing Sun , Aleksandar Damnjanovic , Tamer Kadous
Abstract: Quasi-colocation (QCL) for listen before talk (LBT) procedures is disclosed. A base station having a plurality of antennas may identify one or more groups of QCL antennas. Various aspects provide for different rules defining the QCL relationship, such as base on interference experienced by the antennas, a physical or logical connection of the antennas and LBT coupling, or synchronization. QCL may further be determined across multiple shared channels, such as based on frequency separation or frequency band of the channels. Once grouped as QCL, the base station performs the LBT procedure to reserve access to the one or more shared communication channels. If the LBT is successful, the base station may then transmit a channel reservation preamble on the shared communication channels in response.
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公开(公告)号：US10231131B2
公开(公告)日：2019-03-12
申请号：US15649375
申请日：2017-07-13
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxia Zhang , Juan Montojo , Siddhartha Mallik , Aleksandar Damnjanovic , Taesang Yoo
Abstract: Wireless communications systems and methods related to autonomous uplink transmission in a shared spectrum are provided. A first wireless communication device identifies a transmission opportunity (TXOP) in a shared spectrum shared by the plurality of network operating entities. The first wireless communication device is associated with a first network operating entity of the plurality of network operating entities. The first wireless communication device identifies a resource in the TXOP designated for autonomous communication. The first wireless communication device communicates autonomous data with a second wireless communication device associated with the first network operating entity during the TXOP using the resource.
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