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公开(公告)号：US20210111779A1
公开(公告)日：2021-04-15
申请号：US16600495
申请日：2019-10-12
Applicant: National Instruments Corporation
Inventor： Nikhil U. Kundargi , Venkata Siva Santosh Ganji , Ahsan Aziz , James Wesley McCoy
IPC: H04B7/06 , H04B17/318 , H04W80/02 , H04W72/04 , H04W24/10 , H04B17/336
Abstract: A UE determines a beam coherence interval metric that is a measure of stability of a beam pair over time based on a set of beam coherence intervals measured by the UE. The beam pair comprises a UE receive beam and a base station transmit beam. A beam coherence interval comprises a time duration within which a quality of a signal received on the UE receive beam remains within one of a plurality of signal quality bins. The UE reports the metric to the base station. The base station may update beam management resource and reporting configurations to the UE based on the metric. The UE may also use the metric to determine a hysteresis value useable by the UE to decide to switch from an active receive beam to a different receive beam having a higher signal quality by at least the hysteresis value.
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公开(公告)号：US10201020B2
公开(公告)日：2019-02-05
申请号：US15708664
申请日：2017-09-19
Applicant: National Instruments Corporation
Inventor： James Wesley McCoy , Nikhil U. Kundargi , Karl F. Nieman, Jr. , Lothar Wenzel , Marcus Monroe
IPC: H04W74/08 , H04W72/04 , H04B7/0456 , H04B7/0452
Abstract: A system and method for performing multi-user random access procedures in a mobile telecommunications network between a base station and a user equipment (UE) having a plurality of antennas includes transmitting a random access signal set (RASS) message using one or more antennas of the plurality of UE antennas. In response to receiving the RASS message, the base station transmitting a random access response physical downlink control channel (RAR-PDCCH) message. In response to receiving the RAR-PDCCH message, transmitting a reciprocity reference signal set (RRSS) signal using the plurality of UE antennas.
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公开(公告)号：US20180123771A1
公开(公告)日：2018-05-03
申请号：US15859214
申请日：2017-12-29
Applicant: National Instruments Corporation
Inventor： James Wesley McCoy , Takao Inoue , Jaeweon Kim
CPC classification number: H04L5/14 , H03F1/3247 , H03F3/24 , H03F2200/294 , H03F2200/451 , H04B1/0475 , H04B1/44 , H04B2001/0425 , H04L25/08 , H04L27/0002 , H04L27/368
Abstract: Techniques are disclosed relating to use of digital predistortion in the context of full-duplex radio. In some embodiments, an apparatus includes one or more antennas and is configured to simultaneously transmit and receive wireless signals via at least partially overlapping frequency resources using the one or more antennas. In some embodiments, the apparatus includes receive chain circuitry that is configured to process both wireless signals transmitted by the apparatus via the one or more antennas and over-the-air wireless signals from one or more other computing devices. In some embodiments, the apparatus includes one or more processing elements configured to determine one or more digital predistortion parameters based on the wireless signals transmitted by the apparatus via the one or more antennas and processed by the receive chain circuitry and apply predistortion to transmitted wireless signals based on the one or more digital predistortion parameters.
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公开(公告)号：US20170207931A1
公开(公告)日：2017-07-20
申请号：US15409261
申请日：2017-01-18
Applicant: NATIONAL INSTRUMENTS CORPORATION
Inventor： Malik Muhammad Usman Gul , Ahsan Aziz , James Wesley McCoy
Abstract: Techniques are disclosed relating to channel sounding. In some embodiments a transmitter transmits a periodic CAZAC sequence beginning at a point in time that corresponds to a timing signal (e.g., a pulse-per-second signal). In some embodiments, a receiver waits to begin processing received sequences for a time interval corresponding to the length of the CAZAC sequence, where the time interval begins at the same time as the timing signal. This may avoid a need for timing synchronization prior to processing, reduce processing and latency in receiver implementations, and may allow determination of a TOA as well as a channel impulse response estimate by correlating a received cyclically-shifted CAZAC sequence with a local version of the transmitted CAZAC sequence.
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公开(公告)号：US11595109B2
公开(公告)日：2023-02-28
申请号：US17741188
申请日：2022-05-10
Applicant: National Instruments Corporation
Inventor： Nikhil U. Kundargi , Venkata Siva Santosh Ganji , Ahsan Aziz , James Wesley McCoy
IPC: H04B7/06 , H04W16/28 , H04W72/04 , H04B17/318 , H04W24/10 , H04B17/336 , H04W80/02
Abstract: A user equipment device (UE) determines a beam coherence interval metric, which is a measure of stability of a beam pair over time based on a set of beam coherence intervals measured by the UE. The beam pair comprises a receive beam of the UE and a transmit beam of a base station transmitting to the UE. A beam coherence interval comprises a time duration within which a quality of a signal received on the UE receive beam remains within one of a plurality of signal quality bins. The UE also determines a hysteresis value based on the beam coherence interval metric and uses the hysteresis value to decide to switch from an active receive beam to a different receive beam that has a signal quality higher than the active receive beam by at least the hysteresis value. Alternatively, the base station determines and sends the UE the hysteresis value.
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Patent Agency Ranking
公开(公告)号：US10567148B2
公开(公告)日：2020-02-18
申请号：US15859214
申请日：2017-12-29
Applicant: National Instruments Corporation
Inventor： James Wesley McCoy , Takao Inoue , Jaeweon Kim
Abstract: Techniques are disclosed relating to use of digital predistortion in the context of full-duplex radio. In some embodiments, an apparatus includes one or more antennas and is configured to simultaneously transmit and receive wireless signals via at least partially overlapping frequency resources using the one or more antennas. In some embodiments, the apparatus includes receive chain circuitry that is configured to process both wireless signals transmitted by the apparatus via the one or more antennas and over-the-air wireless signals from one or more other computing devices. In some embodiments, the apparatus includes one or more processing elements configured to determine one or more digital predistortion parameters based on the wireless signals transmitted by the apparatus via the one or more antennas and processed by the receive chain circuitry and apply predistortion to transmitted wireless signals based on the one or more digital predistortion parameters.
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公开(公告)号：US10567065B2
公开(公告)日：2020-02-18
申请号：US16100854
申请日：2018-08-10
Applicant: National Instruments Corporation
Inventor： Nikhil U. Kundargi , Achim Nahler , James Wesley McCoy
IPC: H04B7/08 , H04B17/382 , H04B7/06 , H04W24/10 , H04B17/318 , H04B7/0413 , H04W16/28 , H04W72/08 , H04L12/26 , H04W72/04 , H04B17/10
Abstract: A processor in a UE evaluates a radio frequency beam quality metric against a threshold, switches from a first beam to a second beam in response to determining the metric falls below the threshold, and transmits to a base station (BS) a report that includes beam measurements. The report indicates the UE has performed the switching and that the beam measurements are with respect to the second beam. A processor in a UE/BS associates narrower and broader beams, uses the narrower beam, rather than the broader beam, to transfer user data between the BS and the UE, evaluates a beam quality metric of the narrower beam against the threshold, and switches to using the broader beam, rather than the narrower beam, to transfer user data between the BS and the UE in response to determining the beam quality metric of the narrower beam falls below the threshold.
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公开(公告)号：US20170338997A1
公开(公告)日：2017-11-23
申请号：US15486537
申请日：2017-04-13
Applicant: National Instruments Corporation
Inventor： James Wesley McCoy , Lothar Wenzel
CPC classification number: H04L27/366 , H04B1/0475 , H04B1/10 , H04L27/38
Abstract: Nyquist filters for pulse shaping and related matched filters in wireless communications are disclosed that provide improved performance. The disclosed embodiments recognize that the second derivative of the raised cosine function is discontinuous in the frequency domain and that the first derivative of the square root raised cosine is discontinuous in the frequency domain. As such, a generalization for the raised cosine filter is applied, and improvements can be made to the raised cosine function time-frequency localization and ultimately to tradeoffs between inter-symbol interference and adjacent channel interference by introducing smoothness to the higher order derivatives of the frequency response.
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公开(公告)号：US20190260549A1
公开(公告)日：2019-08-22
申请号：US16361390
申请日：2019-03-22
Applicant: National Instruments Corporation
Inventor： James Wesley McCoy , Nikhil U. Kundargi , Karl F. Nieman
Abstract: Embodiments are disclosed for a new unified and flexible frame structure for 5G (5th generation) mobile telecommunications standard and related radio access technology (RAT). The disclosed embodiments use communication frames with multiple partition types and are able to span a wide range of 5G deployment scenarios in a flexible and scalable manner.
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公开(公告)号：US10243715B2
公开(公告)日：2019-03-26
申请号：US15270181
申请日：2016-09-20
Applicant: National Instruments Corporation
Inventor： James Wesley McCoy , Nikhil U. Kundargi , Karl F. Nieman
Abstract: Embodiments are disclosed for a new unified and flexible frame structure for 5G (5th generation) mobile telecommunications standard and related radio access technology (RAT). The disclosed embodiments use communication frames with multiple partition types and are able to span a wide range of 5G deployment scenarios in a flexible and scalable manner.
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