公开(公告)号：US20190306862A1

公开(公告)日：2019-10-03

申请号：US16447606

申请日：2019-06-20

Applicant: QUALCOMM Incorporated

Inventor： Hung LY ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL ,  Tingfang JI ,  Durga Prasad MALLADI

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26

Abstract: Methods and apparatuses for adaptive subcarrier spacing in wireless communication networks are described. For example, the described aspects include transmitting, from the UE to a network entity, a first PRACH transmission with a first subcarrier spacing; determining, by the UE, that the first PRACH transmission to the network entity is not successful; and transmitting, from the UE, a second PRACH transmission with a second subcarrier spacing in response to determining that the first PRACH transmission is not successful, wherein the first subcarrier spacing is different from the second subcarrier spacing.

公开(公告)号：US20190305910A1

公开(公告)日：2019-10-03

申请号：US16446350

申请日：2019-06-19

Applicant: QUALCOMM Incorporated

Inventor： Renqiu WANG ,  Yi HUANG ,  Krishna MUKKAVILLI ,  Peter ANG ,  Hao XU

IPC: H04L5/00 ,  H04L1/18 ,  H04W28/04

Abstract: Aspects described herein relate to communicating feedback in wireless communications. A user equipment (UE) can receive, in a downlink portion of a slot, data communications from a base station, where the data communications comprise multiple code blocks received in one or more downlink symbols. The UE can generate one or more feedback bits to provide feedback for the multiple code blocks. The UE can transmit, to the base station and in an uplink portion of the slot, an indication of the one or more feedback bits

公开(公告)号：US20190239241A1

公开(公告)日：2019-08-01

申请号：US16377742

申请日：2019-04-08

Applicant: QUALCOMM Incorporated

Inventor： Alberto RICO ALVARINO ,  Peter GAAL ,  Wanshi CHEN ,  Hao XU

IPC: H04W72/12 ,  H04W72/14 ,  H04L5/00 ,  H04W8/08 ,  H04B7/0413 ,  H04W72/04 ,  H04B3/36 ,  H04W4/70 ,  H04W16/32 ,  H04L5/14

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and more specifically to a method for machine type communications involving identifying one or more subframes, within at least one radio frame, unavailable for bundled transmissions across multiple subframes and communicating, via at least one narrowband region within a wider system bandwidth, using bundled transmissions across multiple subframes based on the identification.

公开(公告)号：US20190239194A1

公开(公告)日：2019-08-01

申请号：US16377857

申请日：2019-04-08

Applicant: QUALCOMM Incorporated

Inventor： Alberto RICO ALVARINO ,  Madhavan Srinivasan VAJAPEYAM ,  Wanshi CHEN ,  Hao XU

IPC: H04W72/04 ,  H04W52/02 ,  H04W76/28 ,  H04W4/70

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.

公开(公告)号：US20190110321A1

公开(公告)日：2019-04-11

申请号：US16210955

申请日：2018-12-05

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Hao XU

IPC: H04W74/08 ,  H04L1/00 ,  H04L27/26

Abstract: Various aspects described herein relate to techniques for random access based on scalable signature design in wireless communications systems. A method, a computer-readable medium, and an apparatus are provided. In an aspect, the method may include randomly choosing an array of source symbols, wherein the array has one or more scalable dimensions based on at least one of a capacity requirement or a coverage requirement of a random access channel (RACH), encoding the array of source symbols into a codeword for a RACH signature, mapping the codeword to a serial concatenation of orthogonal or quasi-orthogonal sequences to define the RACH signature, and transmitting the RACH signature within a RACH slot. The techniques described herein may apply to different communications technologies, including 5th Generation (5G) New Radio (NR) communications technology.

公开(公告)号：US20190110283A1

公开(公告)日：2019-04-11

申请号：US16154101

申请日：2018-10-08

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Hao XU ,  Peter GAAL

IPC: H04W72/04 ,  H04W4/70 ,  H04L5/00 ,  H04W72/00

Abstract: Aspects of the present disclosure provide techniques for wireless communications by a user equipment (UE). An exemplary method, performed by a UE, generally includes receiving a physical broadcast channel (PBCH), and determining, based on a first one or more bits in the PBCH, whether a second one or more bits in the PBCH are used to indicate control information for communications related to a first type of applications or a second type of applications.

公开(公告)号：US20190007173A1

公开(公告)日：2019-01-03

申请号：US16104111

申请日：2018-08-16

Applicant: QUALCOMM Incorporated

Inventor： Onkar Jayant DABEER ,  Aleksandar DAMNJANOVIC ,  Kiran Kumar SOMASUNDARAM ,  Madhavan Srinivasan VAJAPEYAM ,  Hao XU ,  Wanshi CHEN ,  Alberto RICO ALVARINO

IPC: H04L1/16 ,  H04L12/26 ,  H04L1/00 ,  H04L1/12

Abstract: According to the present disclosure, CSI and/or a plurality of ACKs related to a group of DL data transmissions may be buffered at the UE as a GACK until a DCI trigger is received from the eNB. Once the trigger is received, the UE may transmit the CSI and/or GACK to the eNB. In this way HARQ feedback and/or CSI may be reliably communicated while reducing payload. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus send, to a UE, data transmissions associated with a first plurality of downlink subframes. In an aspect, the apparatus increments a counter for each data transmission sent to the UE. In a further aspect, the apparatus transmits, to the UE, a first trigger for a first GACK when a counter is greater than or equal to a threshold.

公开(公告)号：US20190007162A1

公开(公告)日：2019-01-03

申请号：US15955983

申请日：2018-04-18

Applicant: QUALCOMM Incorporated

Inventor： Alberto RICO ALVARINO ,  Kapil BHATTAD ,  Wanshi CHEN ,  Hao XU

IPC: H04L1/00 ,  H04W8/22 ,  H04W28/04

CPC classification number: H04L1/0009 ,  H04L1/0022 ,  H04L1/0025 ,  H04L1/0041 ,  H04L1/0046 ,  H04L1/0057 ,  H04W8/22 ,  H04W28/04

Abstract: A method of wireless communication of a user equipment (UE) includes communicating with a base station using a baseline channel code. The baseline code may include a tail-biting convolutional code (TBCC), or turbo code (TC). The method also includes sending information to the base station indicating a capability of the UE to support multiple channel codes. The method further includes receiving, from the base station, a configuration to operate with any one of the channel codes.

公开(公告)号：US20180376477A1

公开(公告)日：2018-12-27

申请号：US16116083

申请日：2018-08-29

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Peter GAAL ,  Shimman PATEL ,  Juan MONTOJO ,  Hao XU ,  Aleksandar DAMNJANOVIC

IPC: H04W72/04 ,  H04L5/00

Abstract: Aspects of the present disclosure generally relate to a conditional utilization of reference signals for managing communications of one or more user equipment (UE) in a wireless communications system. The described aspects include receiving a transmission having a first subframe slot and a second subframe slot, at least one of the first subframe slot and the second subframe slot have a single-slot transmission time interval (TTI). The described aspects further include detecting a first demodulation reference signal (DM-RS) in the first subframe slot and a second DM-RS in the second subframe slot. The described aspects further include determining whether to demodulate the at least one downlink channel in the first subframe slot using the first DM-RS in the first subframe slot or to demodulate both the first DM-RS in the first subframe slot and the second DM-RS in the second subframe slot based on whether at least one condition exists.

公开(公告)号：US20180367272A1

公开(公告)日：2018-12-20

申请号：US16010001

申请日：2018-06-15

Applicant: QUALCOMM Incorporated

Inventor： Renqiu WANG ,  Yi HUANG ,  Hao XU ,  Tingfang JI ,  Seyong PARK

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/08

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for short uplink burst designs. In some cases, one sequence, from a plurality of sequences, may be transmitted in multiple tones of at least one short burst symbol conveying at least one bit of information. The plurality of sequences may have the same values at a first set of common tone locations for demodulation reference signals (DMRS) and groups of sequences from the plurality of sequences may be identified, each sequence in a group having a second set of common tone locations for DMRS.