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公开(公告)号：US10715369B2
公开(公告)日：2020-07-14
申请号：US15975112
申请日：2018-05-09
Applicant: QUALCOMM Incorporated
Inventor： Tianyang Bai , Juergen Cezanne , Sundar Subramanian , Junyi Li
Abstract: At a receiver, errors may occur in estimating phase trajectory based on PT-RS due to a window effect. In order to address the problem of such errors, a transmitter determines at least one location for inserting PT-RS samples into a sequence of a plurality of samples, wherein a first set of the samples comprises a first number of samples at a beginning of the sequence and/or a second number of samples at an end of the sequence, and wherein the at least one location for the PT-RS samples is within a second set of the plurality of samples. The apparatus inserts the PT-RS samples into the sequence based on the determined at least one location and transmits a signal based on the inserted PT-RS samples. A receiver extracts the PT-RS samples and estimates phase errors for data samples in the received transmission based on the extracted PT-RS samples.
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公开(公告)号：US10708953B2
公开(公告)日：2020-07-07
申请号：US15391425
申请日：2016-12-27
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Tao Luo , Juergen Cezanne , Sundar Subramanian , Junyi Li
Abstract: Aspects of the disclosure relate to improvements in random access procedures within a wireless communication network. To increase the likelihood that a user equipment (UE) will properly decode a random access response message from a base station, the base station may retransmit the random access response message one or more times. The number of retransmissions may be fixed or may be variable depending on whether the base station is able to receive or successfully decode a subsequently transmitted uplink message.
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公开(公告)号：US10708111B2
公开(公告)日：2020-07-07
申请号：US16301423
申请日：2017-02-14
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Sundar Subramanian , Juergen Cezanne , Junyi Li
Abstract: Various aspects of the disclosure relate to communicating random access information and uplink control information. In some aspects, a user equipment (UE) or other suitable apparatus transmits physical uplink control channel (PUCCH) information concurrently with random access channel (RACH) information transmitted by another UE or other apparatus. For example, the RACH access information and the PUCCH information may be frequency division multiplexed orthogonal tones. The disclosure relates in some aspects to using downlink-uplink (DL-UL) channel reciprocity to determine symbol and/or tone locations. For example, a base station or other suitable apparatus may initially sweep across different directions in different time slots to transmit signals during a synchronization sub-frame. A UE or other suitable apparatus can then find an appropriate RACH symbol from its best synchronization beam index and transmit PUCCH information in those symbols.
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公开(公告)号：US10701727B2
公开(公告)日：2020-06-30
申请号：US16017614
申请日：2018-06-25
Applicant: QUALCOMM Incorporated
Inventor： Karl Georg Hampel , Junyi Li , Sundar Subramanian , Muhammad Nazmul Islam , Navid Abedini , Juergen Cezanne
Abstract: Certain aspects of the present disclosure generally relate to wireless communication. A wireless node may receive a first scheduling command identifying a first resource allocation via a first link, may determine a second resource allocation based at least in part on the first resource allocation and a resource allocation policy, may transmit a second scheduling command identifying the second resource allocation via a second link, and may communicate network traffic on the first link and the second link using the first resource allocation and the second resource allocation, respectively. Numerous other aspects are provided.
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公开(公告)号：US20200186228A1
公开(公告)日：2020-06-11
申请号：US16679793
申请日：2019-11-11
Applicant: QUALCOMM Incorporated
Inventor： Vasanthan Raghavan , Jung Ho Ryu , Kobi Ravid , Juergen Cezanne , Junyi Li
IPC: H04B7/06 , H04W24/10 , H04B7/0456 , H04W16/28
Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may receive a first beam measurement report from a second wireless device, the first beam measurement report indicating a first set of beam measurements for a wireless channel between the first wireless device and the second wireless device. The first wireless device may transmit to the second wireless device a cluster validity metric for at least one beam in the first beam measurement report. The first wireless device may receive from the second wireless device, in response to transmitting the cluster validity metric, a second beam measurement report indicating a second set of beam measurements for the wireless channel. The first wireless device may select a beam for transmitting to the second wireless device based at least in part on the first and second beam measurement reports.
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Patent Agency Ranking
公开(公告)号：US10560910B2
公开(公告)日：2020-02-11
申请号：US15926884
申请日：2018-03-20
Applicant: QUALCOMM Incorporated
Inventor： Bilal Sadiq , Juergen Cezanne , Shrinivas Kudekar , Navid Abedini , Muhammad Nazmul Islam
Abstract: An apparatus is provided for wireless communication at a base station with improved PBCH construction and decoding. The base station apparatus constructs a PBCH payload, wherein a bit location is selected for encoding a plurality of bits of the PBCH based on an estimated reliability for the corresponding bits location wherein the plurality of bits comprises frozen bits, unknown bits that are unknown to a user equipment, and potentially known bits that are potentially known by the user equipment. The apparatus transmits the PBCH payload in at least one of a plurality of SS blocks. A UE receiving the PBCH decodes the PBCH based on a successive decoding order. The successive decoding order may be based on an estimated reliability for the corresponding bits, e.g., in which potentially known bits are decoded prior to unknown bits.
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57.发明授权公开(公告)号：US10560243B2
公开(公告)日：2020-02-11
申请号：US15711157
申请日：2017-09-21
Applicant: QUALCOMM Incorporated
Inventor： Tianyang Bai , Juergen Cezanne , Sundar Subramanian , Junyi Li
Abstract: An apparatus for wireless communication selects a recommendation for the need. The apparatus selects the resource to transmit a phase tracking reference signal based on a condition of a communication system. The apparatus performs at least one of transmitting an indication of the selected recommendation for the resource to a second wireless communication device or transmitting at least one of information or a reference signal to the second device to assist the second device in determining the resource. In an aspect, the selection may be made based on receiving a request for a recommendation from the second wireless communication device or the transmitting the at least one of the information or the reference signal are based on a request received.
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公开(公告)号：US10404433B2
公开(公告)日：2019-09-03
申请号：US15826612
申请日：2017-11-29
Applicant: QUALCOMM Incorporated
Inventor： Juergen Cezanne , Vasanthan Raghavan , Bilal Sadiq , Sundar Subramanian , Ashwin Sampath , Junyi Li
IPC: H04L5/00 , H04L27/26 , H04W72/04 , H04B7/0408
Abstract: Techniques are described for wireless communication. A method of wireless communication at a first wireless device includes identifying a template mapping of a plurality of ports to a first plurality of frequency subcarriers and a first plurality of time periods of a template time-frequency resource grid; mapping a plurality of resource elements of an orthogonal frequency-division multiplexing (OFDM) time-frequency resource grid to the plurality of ports based at least in part on the template mapping; receiving a reference signal from a second wireless device, on a subset of the plurality of ports, based at least in part on the mapping; and decoding the reference signal from a subset of the plurality of resource elements based at least in part on the mapping. In some cases, each port of the plurality of ports is associated with a corresponding radio frequency (RF) chain.
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公开(公告)号：US20190268118A1
公开(公告)日：2019-08-29
申请号：US16281329
申请日：2019-02-21
Applicant: QUALCOMM Incorporated
Inventor： Bilal Sadiq , Juergen Cezanne , Muhammad Nazmul Islam , Navid Abedini , Xiao Feng Wang , Makesh Pravin John Wilson , Sony Akkarakaran , Alexandros Manolakos
Abstract: Methods, systems, and devices for wireless communications are described. A wireless device, such as a user equipment and/or a base station, may determine that an active transmit beam has changed from a first transmit beam to a second transmit beam, the second transmit beam being different from the first transmit beam. The wireless device may identify a reference signal identifier that is associated with the second transmit beam. The wireless device may update, based at least in part on the identifying, a channel state information (CSI) resource setting to include the reference signal identifier, wherein the CSI resource setting is associated with the active transmit beam.
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公开(公告)号：US10367616B2
公开(公告)日：2019-07-30
申请号：US15357812
申请日：2016-11-21
Applicant: QUALCOMM Incorporated
Inventor： Muhammad Nazmul Islam , Sundar Subramanian , Tao Luo , Juergen Cezanne , Bilal Sadiq , Junyi Li
Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a sounding reference signal (SRS) configuration for user equipment (UE). The base station may transmit an SRS grant message to a UE indicating the SRS configuration. An indication of SRS parameters may be included in the SRS grant message, and may include the SRS parameters or a location of the SRS parameters. That is, SRS parameters may be transmitted in a control channel with the SRS grant message or may be separately sent in a data channel as indicated by the indication of SRS parameters. In some cases, SRS parameters may be determined based on previously received UE feedback regarding channel conditions or power limitations. Alternatively, the base station may make its own environment measurements or assign SRS parameters autonomously. The UE may signal SRS transmissions to the base station according to the SRS grant message.
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