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71.发明授权公开(公告)号：US10798682B2
公开(公告)日：2020-10-06
申请号：US15810528
申请日：2017-11-13
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Stefan Geirhofer , Hao Xu
Abstract: Certain aspects provide methods and apparatus for wireless communications. One example method generally includes receiving a shared channel within a subframe, determining the same precoding may be used across resource blocks belonging to the same precoding resource block group (PRG) of the shared channel, and processing the shared channel based on the determination.
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72.发明授权公开(公告)号：US10791556B2
公开(公告)日：2020-09-29
申请号：US16383182
申请日：2019-04-12
Applicant: QUALCOMM Incorporated
Inventor： Peter Gaal , Srinivas Yerramalli , Durga Prasad Malladi , Naga Bhushan , Yongbin Wei , Tao Luo , Hao Xu , Wanshi Chen , Shimman Arvind Patel , Aleksandar Damnjanovic , Xiaoxia Zhang
Abstract: Techniques are described for wireless communication. A first method includes winning a contention for access to an unlicensed radio frequency spectrum band, and transmitting at least a portion of a channel usage beacon signal (CUBS) over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted in a number of frequency interlaces of the unlicensed radio frequency spectrum band. A second method includes winning a contention for access to an unlicensed radio frequency spectrum band; determining whether the contention is won within a threshold time before a next symbol period boundary; and transmitting at least a portion of a CUBS over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted during a preamble including a fractional period of a first symbol period. The at least portion of the CUBS may be based at least in part on the determining.
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73.发明授权公开(公告)号：US10743338B2
公开(公告)日：2020-08-11
申请号：US15925698
申请日：2018-03-19
Applicant: QUALCOMM Incorporated
Inventor： Seyedkianoush Hosseini , Wanshi Chen , Peter Gaal , Alberto Rico Alvarino , Hao Xu , Jing Sun , Shimman Arvind Patel
IPC: H04W72/12 , H04L5/00 , H04L1/08 , H04L1/18 , H04L1/16 , H04L1/00 , H04W76/11 , H04W76/27 , H04W72/04 , H04L5/14
Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems as described herein may be configured to support several service types with different latency, reliability, or throughput rates or standards. One such service type may be referred to as ultra-reliable, low-latency communications (URLLC). Enhancements to improve URLLC performance in coexistence with and as a complement to legacy service types, such as LTE are described. These include, for example, enhanced timing resource allocations, enhanced transmission repetition schemes, enhanced feedback mechanisms, or a combination of these features to achieve certain reliability and latency targets.
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74.发明授权公开(公告)号：US10736093B2
公开(公告)日：2020-08-04
申请号：US16215493
申请日：2018-12-10
Applicant: QUALCOMM Incorporated
Inventor： Sony Akkarakaran , Tao Luo , Wanshi Chen , Hao Xu , Peter Gaal , Yi Huang , Renqiu Wang , Seyong Park
Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for strategically placing a sounding reference signal (SRS) within a slot to improve the decoding timeline. Aspects of the disclosure further relate to wireless communication systems configured to optimize the physical downlink control channel (PDCCH) search space within a slot to improve the decoding timeline. Features may also include placing the SRS near the end of the slot, such as after the uplink user data traffic and the corresponding uplink demodulation reference signal (DMRS). In addition, features may also include identifying the PDCCH search space within the slot based on at least a slot index of the slot. Other aspects, embodiments, and features are also claimed and described.
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公开(公告)号：US10736057B2
公开(公告)日：2020-08-04
申请号：US16209583
申请日：2018-12-04
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Wanshi Chen , Peter Gaal
Abstract: Certain aspects of the present disclosure provide methods and apparatus for sounding reference signal (SRS) triggering and power control for coordinated multi-point (CoMP) operations. One method generally includes maintaining separate power control processes for at least a first aperiodic SRS (A-SRS) and a second A-SRS, receiving, in a first subframe, a downlink transmission triggering transmission of at least one of the first and second A-SRS in a subsequent subframe, identifying which of the first and second A-SRS to transmit in the subsequent subframe, receiving a first power control command that indicates a power control value to apply to the identified A-SRS, and transmitting the identified A-SRS based in accordance with the first power control command.
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Patent Agency Ranking
公开(公告)号：US10721727B2
公开(公告)日：2020-07-21
申请号：US16591366
申请日：2019-10-02
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Madhavan Srinivasan Vajapeyam , Wanshi Chen , Hao Xu
Abstract: In narrowband communication, channels may use repetitions in multiple subframes. SPS and DRX for the narrowband communication may not accommodate such repetitions, because repetitions for a channel may fall only partially within a DRX ON duration. An apparatus addresses this problem by determining a DRX ON duration, determining a set of subframes carrying a narrowband PDCCH candidate and determining that the DRX ON duration at least partially overlaps with the set of subframes of the narrowband PDCCH. The apparatus then refrains from decoding the first narrowband PDCCH candidate, decodes the first narrowband PDCCH candidate, or extends the DRX ON duration to include the set of subframes entirely and decoding the first narrowband PDCCH candidate carried in the set of subframes in the extended DRX ON duration. The apparatus may also determine DRX configuration parameters based on parameters of bundled channels, and handle invalid subframes for an SPS grant.
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公开(公告)号：US10721052B2
公开(公告)日：2020-07-21
申请号：US15710739
申请日：2017-09-20
Applicant: QUALCOMM Incorporated
Inventor： Kapil Bhattad , Xiao Feng Wang , Alberto Rico Alvarino , Hao Xu
IPC: H04L5/14 , H04L5/22 , H04W72/04 , H04L27/26 , H04L5/00 , H04L1/08 , H04L25/02 , H04L1/00 , H04W74/08 , H04L5/26
Abstract: There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In one aspect, the apparatus may receive information associated with a narrowband TDD frame structure. The apparatus may also transmit an uplink transmission a predetermined number of times using a first scrambling sequence. In one aspect, the first scrambling sequence may be determined using a first number of least significant bits (LSBs) associated with a first radio frame. In another aspect, the first number of LSBs may be larger than a second number of LSBs used in a second scrambling sequence associated with a narrowband frequency-division duplex (FDD) uplink transmission.
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公开(公告)号：US20200229063A1
公开(公告)日：2020-07-16
申请号：US16833239
申请日：2020-03-27
Applicant: QUALCOMM Incorporated
Inventor： Renqiu Wang , Madhavan Srinivasan Vajapeyam , Hao Xu , Wanshi Chen , Peter Gaal
Abstract: Cell selection techniques are provided for network access to cells that may employ one or more coverage enhancement techniques. A user equipment (UE), which may be a machine type communication (MTC) device, upon initial acquisition or upon wakeup may measure a reference signal received power (RSRP), reference signal received quality (RSRQ), or both, and determine a cell selection value based at least in part on the RSRP, RSRQ, or a combination thereof. The cell selection value may be determined based on an offset, which may be selected based on a measurement accuracy capability of the UE. UE sequential access attempts, neighbor cell list information that may include coverage enhancement of neighboring cells transmissions, and cell re-selection measurement frequency adjustments are also described.
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公开(公告)号：US10701729B2
公开(公告)日：2020-06-30
申请号：US14728859
申请日：2015-06-02
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Peter Gaal , Wanshi Chen , Aleksandar Damnjanovic , Yongbin Wei , Durga Prasad Malladi , Hao Xu , Madhavan Srinivasan Vajapeyam , Srinivas Yerramalli
Abstract: Protection of transmission and reception of clear channel assessment (CCA)-exempt transmission (CET) is disclosed in which channel reserving signals or protection signals may be transmitted by the transmitter or receiver of the CET. The transmitted signals may be received by the neighboring access points that could potentially cause interference with the reception of the CET.
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公开(公告)号：US10681676B2
公开(公告)日：2020-06-09
申请号：US15052471
申请日：2016-02-24
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Hao Xu , Peter Gaal
Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to managing narrowband regions of system bandwidths for devices with limited communications resources, such as machine type communication(s) (MTC) devices and enhanced MTC (eMTC) devices. An example method generally includes determining a set of downlink (DL) narrowband regions partitioned from a DL system bandwidth, determining a set of uplink (UL) narrowband regions partitioned from an UL system bandwidth, determining a mapping between the set of DL narrowband regions and the set of UL narrowband regions, and communicating with at least a base station (BS) using at least one of the mapped narrowband regions.
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