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公开(公告)号：US20190230690A1
公开(公告)日：2019-07-25
申请号：US16254398
申请日：2019-01-22
Applicant: QUALCOMM Incorporated
Inventor： Sony AKKARAKARAN , Tao LUO , Peter GAAL , Yi HUANG , Renqiu WANG , Wanshi CHEN
Abstract: Aspects of the present disclosure provide mechanisms for utilizing a single uplink grant to transmit scheduling requests (SRs) for two or more logical channels. A base station may allocate a separate grant of uplink resources for each SR opportunity (e.g., each logical channel for which a user equipment (UE) may transmit a SR to the base station). When the allocated uplink resources are within the same time period, the UE may select a subset of the SR opportunities for which to transmit a SR and partition the subset into one or more groups of SR opportunities. The UE may then generate one or more SR bits representing the one or more groups of SR opportunities and transmit the one or more SR bits on the single uplink grant.
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公开(公告)号：US20190230656A1
公开(公告)日：2019-07-25
申请号：US16255779
申请日：2019-01-23
Applicant: QUALCOMM Incorporated
Inventor： Joseph Binamira SORIAGA , Jing SUN , Wanshi CHEN , Heechoon LEE , Peter GAAL , Alexandros MANOLAKOS , Yang YANG
Abstract: Certain aspects of the present disclosure provide techniques for slot aggregation in new radio (NR) systems. A method of wireless communication by a user equipment (UE) includes receiving radio resource control (RRC) signaling providing a semi-static configuration for transmission and/or reception of a repeated transport block (TB) and/or a different TB in each of a plurality of aggregated slots. The UE transmits or receives the TBs in the plurality of aggregated slots based on the semi-static configuration. Another method is provided in which the UE transmits and/or receives a demodulation reference signal (DMRS) in each of a plurality of aggregated slots, each DMRS associated with a repeated TB or a different TB in the slot. The UE determines, based on received signaling, whether the DMRS use a same precoder or a different precoder and modulates and/or demodulates the TBs in the plurality of aggregated slots based on the determination.
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公开(公告)号：US20190215835A1
公开(公告)日：2019-07-11
申请号：US16356813
申请日：2019-03-18
Applicant: QUALCOMM Incorporated
Inventor： Alberto RICO ALVARINO , Peter GAAL , Xiao Feng WANG , Wanshi CHEN , Seyed Ali Akbar FAKOORIAN , Hao XU , Renqiu WANG , Jing LEI
CPC classification number: H04W72/0453 , H04L5/0048 , H04L5/0053 , H04L5/0092 , H04W4/70 , H04W72/087 , H04W88/02 , H04W88/08
Abstract: Aspects of the present disclosure provide techniques for design of channel raster for narrowband operation. One example method, performed by a base station, generally includes determining, based on one or more conditions, an exact frequency location of one channel of one or more channels to perform narrowband communications with a user equipment. The method also includes transmitting an indication of the one or more conditions to the user equipment. The method further includes communicating with the UE, based at least in part on the exact frequency location of the one channel.
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公开(公告)号：US20190182818A1
公开(公告)日：2019-06-13
申请号：US16276201
申请日：2019-02-14
Applicant: QUALCOMM Incorporated
Inventor： Wanshi CHEN , Peter GAAL
CPC classification number: H04W72/0406 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L5/0053 , H04L5/0073 , H04L5/14 , H04L5/1469 , H04W72/0446 , H04W72/1231 , H04W74/0808 , H04W88/02
Abstract: A modified subframe structure is defined for a subset of a plurality of subframes. The modified subframe structure includes a first portion with one or more blank symbols over which a network node can measure monitor to determine whether the subframe is used as a downlink (or uplink) subframe by a neighboring network node. The modified subframe structure can also include a second portion of symbols for communicating control information or data in the subframe, which can be based on determining whether the subframe is used as a downlink (or uplink) subframe by the neighboring network node. This can lessen the impact of possible interference caused by the network nodes dynamically switching time division duplexing (TDD) subframe configurations by enabling network nodes to determine when a neighboring node is transmitting in a subframe, and accordingly avoiding transmitting in the subframe.
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205.发明申请公开(公告)号：US20190182676A1
公开(公告)日：2019-06-13
申请号：US16276444
申请日：2019-02-14
Applicant: QUALCOMM Incorporated
Inventor： Hao XU , Wanshi CHEN
Abstract: Aspects of the present disclosure provide techniques utilizing shared radio frequency spectrum (SRFS) for certain devices, such as machine type communication(s) (MTC) user equipments (UEs) and evolved or enhanced MTC (eMTC) UEs. An exemplary method, performed, for example, by a base station (BS), includes performing a channel clear assessment (CCA) for at least a portion of the SRFS including one or more narrowband regions, and communicating with at least one MTC UE, after performing the CCA, on at least one of the narrowband regions. A second exemplary method, performed, for example, by a MTC UE, generally includes receiving, from a BS, an assignment of resources in a narrowband region of the SRFS band for the MTC UE to use for communicating with the BS, and communicating with the BS on the narrowband region without performing a CCA for the narrowband region. A third exemplary method, performed, for example, by a MTC UE, generally includes performing a CCA for a narrowband region of the SRFS band and communicating with a BS on the narrowband region.
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Patent Agency Ranking
公开(公告)号：US20190150185A1
公开(公告)日：2019-05-16
申请号：US16249628
申请日：2019-01-16
Applicant: QUALCOMM Incorporated
Inventor： Madhavan Srinivasan VAJAPEYAM , Aleksandar DAMNJANOVIC , Tao LUO , Wanshi CHEN , Peter GAAL
CPC classification number: H04W72/14 , H04L1/1861 , H04W16/14 , H04W72/1268 , H04W74/004 , H04W74/04
Abstract: Techniques for uplink transmission management in a wireless communications system are described herein. An example method may include receiving an explicit uplink grant that indicates one or more implicit uplink grants. In an aspect, the example method may include performing a first clear channel assessment (CCA) in response to the explicit uplink grant in a first time slot. In another aspect, the example method may include, if the first CCA fails, sequentially performing one or more additional CCAs respectively in one or more time slots subsequent to the first time slot in response to the one or more implicit uplink grants, and transmitting the PDU over the unlicensed or shared spectrum and in a time slot subsequent to the time slot in which one of the one or more additional CCAs succeeds.
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207.发明申请公开(公告)号：US20190110280A1
公开(公告)日：2019-04-11
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：US20190090113A1
公开(公告)日：2019-03-21
申请号：US16195338
申请日：2018-11-19
Applicant: QUALCOMM Incorporated
Inventor： Alberto RICO ALVARINO , Wanshi CHEN , Hao XU
Abstract: Certain aspects of the present disclosure generally relate to wireless communications and more specifically to search space configuration in systems utilizing devices with limited communications resources, such as machine type communication (MTC) devices and enhanced MTC (eMTC) devices. An example method generally includes receiving a physical random access channel (PRACH) signal from a first user equipment (UE) on a first narrowband region within a wider system bandwidth and transmitting, in response to the PRACH signal, a random access response (RAR) signal in a first search space in a second narrowband region in at least a first subframe.
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公开(公告)号：US20190089436A1
公开(公告)日：2019-03-21
申请号：US16085498
申请日：2017-04-27
Applicant: QUALCOMM Incorporated
Inventor： Chao WEI , Wanshi CHEN , Peter GAAL
IPC: H04B7/06 , H04L5/00 , H04W72/04 , H04B7/0456
Abstract: Dynamic channel state information (CSI) reference signal (CSI-RS) activation/deactivation via layer 1 signaling is discussed. An eNB may configure multiple dynamic CSI-RS resource configurations for a given user equipment (UE). Multiple dynamic CSI-RS configurations may be associated with CSI processes, and also one or more dynamic CSI-RS resources may be associated with multiple CSI processes. Each dynamic CSI-RS resource configuration may include the number of ports, RE locations, and power ratio, as well as the subframe configuration, which may include periodicity and subframe offset. The eNB may dynamically trigger or release the different dynamic CSI-RS resources through layer 1 signaling. Additional aspects provide for ways to determine dynamic CSI-RS transmission instances, to enhance rate matching to support dynamic CSI-RS transmissions, and to report CSI for dynamic CSI-RS resources.
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公开(公告)号：US20190082422A1
公开(公告)日：2019-03-14
申请号：US16110343
申请日：2018-08-23
Applicant: QUALCOMM Incorporated
Inventor： Jing SUN , Heechoon LEE , Wanshi CHEN
Abstract: In order to improve the selection of search space candidates for a downlink control channel, an apparatus determines a set of decoding candidates of a lower aggregation level for a downlink control channel based on a random selection from a plurality of potential decoding candidates, wherein the plurality of potential decoding candidates are defined from a second set of decoding candidates of a higher aggregation level. The apparatus then attempts to decode the downlink control channel based on determined sets of decoding candidates of different aggregation levels. The downlink control channel may comprise a PDCCH.
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