公开(公告)号：US20200336892A1

公开(公告)日：2020-10-22

申请号：US16843003

申请日：2020-04-08

Applicant: QUALCOMM Incorporated

Inventor： Mostafa KHOSHNEVISAN ,  Seyedkianoush HOSSEINI ,  Xiaoxia ZHANG ,  Wanshi CHEN ,  Peter GAAL ,  Seyed Ali Akbar FAKOORIAN

IPC: H04W8/24 ,  H04L5/00 ,  H04W72/10 ,  H04L1/18

Abstract: Certain aspects of the present disclosure provide techniques for indicating carrier aggregation capabilities. An example method generally includes signaling, to a base station (BS), carrier aggregation capability information indicating a capability for performing separate operations concurrently on a plurality of component carriers; receiving a carrier aggregation configuration indicating component carriers designated for the separate operations; and receiving or transmitting transmissions based on the carrier aggregation configuration.

公开(公告)号：US20200296742A1

公开(公告)日：2020-09-17

申请号：US16768102

申请日：2018-11-28

Applicant: Chenxi HAO ,  Yu ZHANG ,  Yi HUANG ,  Liangming WU ,  Wanshi CHEN ,  Alexandros MANOLAKOS ,  QUALCOMM Incorporated

Inventor： Chenxi HAO ,  Yu ZHANG ,  Yi HUANG ,  Liangming WU ,  Wanshi CHEN ,  Alexandros MANOLAKOS

IPC: H04W72/12 ,  H04W72/04 ,  H04W72/06 ,  H04L1/00 ,  H04W76/27 ,  H04W80/02 ,  H04L5/10 ,  H04L5/00 ,  H04L25/02 ,  H04B7/06

Abstract: Certain aspects of the present disclosure relate to methods and apparatus relating to UCI layer mapping. According to certain aspects, a mapping rule maps UCI to one or more layers of a physical uplink shared channel (PUSCH) transmission based on at least one of a rank of the PUSCH transmission or a modulation and coding scheme (MCS) of the PUSCH transmission.

公开(公告)号：US20200275505A1

公开(公告)日：2020-08-27

申请号：US16783985

申请日：2020-02-06

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Wanshi CHEN ,  Peter GAAL ,  Joseph Binamira SORIAGA

IPC: H04W76/18 ,  H04W74/08 ,  H04L1/18 ,  H04W72/04 ,  H04L1/00

Abstract: Aspects described herein relate to determining a failure associated with reception, by a base station, of an initial transmission of a random access message transmitted by the UE in a two-step random access procedure, and based on determining the failure situations associated with reception of the random access message, configuring the parameters of a retransmission and/or retransmitting at least a portion of the random access message.

公开(公告)号：US20200267609A1

公开(公告)日：2020-08-20

申请号：US16794091

申请日：2020-02-18

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh LY ,  Joseph Binamira SORIAGA ,  Wanshi CHEN ,  Peter GAAL ,  Tao LUO ,  Ozcan OZTURK ,  Karthika PALADUGU

IPC: H04W36/00 ,  H04W56/00

Abstract: This disclosure provides systems, methods and apparatus for determining a target base station timing advance value between a user equipment (UE) and target base station in connection with a random access channel (RACH)-less handover procedure. In one aspect, the UE may determine the target base station's timing advance based at least in part on a timing difference between the target base station and the source base station and based at least in part on a timing offset associated with an uplink and a downlink of the UE. In some aspects, the target base station may determine the timing advance using an uplink reference signal of the UE. In some aspects, the UE may report a timing difference between the target base station and the source base station, and the source cell may determine a timing advance based at least in part on the timing difference.

公开(公告)号：US20200252975A1

公开(公告)日：2020-08-06

申请号：US16777724

申请日：2020-01-30

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Seyong PARK ,  Linhai HE ,  Jay Kumar SUNDARARAJAN ,  Hung Dinh LY ,  Wanshi CHEN ,  Peter GAAL

IPC: H04W74/08 ,  H04W76/27 ,  H04B7/01 ,  H04L27/26

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station (BS), a signaling communication that indicates one or more preamble sequence configurations. Each of the preamble sequence configurations may specify a respective plurality of preamble sequence rules for a different random access channel (RACH) procedure type. The UE may generate, based at least in part on a plurality of preamble sequence rules for a preamble sequence configuration of the one or more preamble sequence configurations, a preamble sequence for a RACH communication in a RACH procedure. Numerous other aspects are provided.

公开(公告)号：US20200252962A1

公开(公告)日：2020-08-06

申请号：US16853652

申请日：2020-04-20

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan VAJAPEYAM ,  Hao XU ,  Wanshi CHEN

IPC: H04W74/00 ,  H04W74/08 ,  H04L5/14 ,  H04W24/08 ,  H04W72/04 ,  H04W72/08

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may select a coverage enhancement (CE) level based on a coverage limitation. The UE may then receive system information from a base station indicating an index of CE levels and corresponding physical random access channel (PRACH) configurations, and the UE may transmit a random access preamble using the PRACH configuration for the selected CE level. For example, the UE may transmit the preamble based on a frequency offset that corresponds to the selected CE level. In some cases, the UE and base station may also associate groups of preambles with downlink (DL) CE levels. The UE may select a preamble from a group corresponding to a desired DL CE level for a random access response message. The base station may determine the DL CE level based on the group the preamble was selected from and respond accordingly.

公开(公告)号：US20200245372A1

公开(公告)日：2020-07-30

申请号：US16773949

申请日：2020-01-27

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Alexandros MANOLAKOS ,  Linhai HE ,  Joseph Binamira SORIAGA ,  Tingfang JI ,  Ying WANG ,  Seyong PARK ,  Jay Kumar SUNDARARAJAN ,  Wanshi CHEN

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/04

Abstract: Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method may be performed by a wireless device such as a user equipment (UE) and generally includes: receiving at least one downlink (DL) signal from one or more base stations or transmitting at least one uplink (UL) positioning reference signal (PRS), the received at least one DL signal comprising: at least one DL PRS, at least one synchronization signal block (SSB), at least one system information block (SIB), at least one other reference signal comprising a channel state information reference signal (CSI-RS), or a combination thereof, wherein at least one measurement is performed based, at least in part, on the received at least one DL signal or the transmitted at least one UL PRS; and performing at least one adjustment for random access based, at least in part, on the at least one measurement.

公开(公告)号：US20200245322A1

公开(公告)日：2020-07-30

申请号：US16847456

申请日：2020-04-13

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Wanshi CHEN ,  Seyedkianoush HOSSEINI

IPC: H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04W72/14 ,  H04W72/08

Abstract: Methods and apparatus are provided for shortened Transmission Time Interval (sTTI) configurations for low latency communications. A User Equipment (UE) receives at least one transmission in a first TTI of a first duration configured for the UE, the first TTI assigned within a second TTI of a second duration, wherein the first TTI is configured for Ultra-Reliable and Low-Latency Communications (URLLC) and uses, at least in part, a configuration for communicating using the second TTI.

公开(公告)号：US20200245171A1

公开(公告)日：2020-07-30

申请号：US16847814

申请日：2020-04-14

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Wanshi CHEN ,  Madhavan Srinivasan VAJAPEYAM ,  Peter GAAL

IPC: H04W24/08 ,  H04W72/04 ,  H04W4/70

Abstract: Aspects of the present disclosure provided techniques that may be applied in systems to allow for communication over a control channel utilizing a relatively narrowband (e.g., six physical resource blocks) based search space. An exemplary method, performed, for example, by a machine type communication (MTC) UE, generally includes identifying, within a subframe, a first search space to monitor for a control channel that occupies a first number of physical resource blocks (PRBs) that represents a narrowband within a system bandwidth comprising a plurality of narrowbands and monitoring at least the first search space for the control channel, wherein the control channel comprises broadcast control information.

公开(公告)号：US20200236716A1

公开(公告)日：2020-07-23

申请号：US16743673

申请日：2020-01-15

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Hung Dinh LY ,  Yi HUANG ,  Peter GAAL ,  Joseph Binamira SORIAGA ,  Amir AMINZADEH GOHARI ,  Wanshi CHEN ,  Linhai HE ,  Tingfang JI

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/04

Abstract: A user equipment (UE) may be configured to receive configuration information from a base station, and the configuration information may indicate at least two different random access channel (RACH) request configuration parameters that each is associated with a respective radio resource control (RRC) state. The UE may be further configured to generate a first message associated with a two-step RACH procedure including a preamble and a payload, the payload including data on an uplink data channel and at least one reference signal. The UE may be further configured to transmit the first message to the base station using at least one of the at least two different RACH request configuration parameters that corresponds to an RRC state of the UE. The preamble may be transmitted on a first set of resources associated with a RACH occasion, and the payload may be transmitted on a second set of resources.