公开(公告)号：WO2019157151A2

公开(公告)日：2019-08-15

申请号：PCT/US2019/017007

申请日：2019-02-07

Applicant: QUALCOMM INCORPORATED

Inventor： HOSSEINI, Seyedkianoush ,  FARAJIDANA, Amir ,  CHEN, Wanshi

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to communicate with a base station on differentchannels or messages with different processing timelines. In order to prevent a collision between processing communications associated with the different length TTIs, the UE may drop one or more communications on corresponding channels with longer processing timelines to receive and/or process the transmission on the channel with a shorter processing timeline. Additionally, the UE may transmit uplink control information (UCI) for the one or more dropped communications, where the UCI may include hybrid access request (HARQ) acknowledgement/negative acknowledgement (ACK/NAK) feedback, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), etc. If a downlink transmission is dropped, the UE may transmit a NAK message. Alternatively, if an uplink transmission is dropped, the UE may transmit at least a portion of the UCI.

公开(公告)号：WO2019156967A1

公开(公告)日：2019-08-15

申请号：PCT/US2019/016628

申请日：2019-02-05

Applicant: QUALCOMM INCORPORATED

Inventor： BAGHEL, Sudhir Kumar ,  LI, Junyi ,  GULATI, Kapil

IPC: H04W74/08 ,  H04W72/10

CPC classification number: H04W74/0816 ,  H04W4/40 ,  H04W72/0446 ,  H04W72/10 ,  H04W72/1263

Abstract: Methods, systems, and devices for wireless communications are described. A UE may identify a plurality of shortened transmission time intervals (TTIs) to be used for priority communications to or from a vehicle having a first traffic priority level, the plurality of shortened TTIs each having a duration that is less than that of other TTIs used in other communications to or from the vehicle having a second traffic priority level which is less than the first traffic priority level. The UE may perform a listen-before-talk procedure in order to reserve the plurality of shortened TTIs for the priority communications. The UE may further reserving at least one instance of the plurality of shortened TTIs for the priority communication. The further reserving may include transmitting a request to reserve the at least one instance of the plurality of shortened TTIs for the priority communication or performing a request-to-send/clear-to-send exchange.

公开(公告)号：WO2019126300A1

公开(公告)日：2019-06-27

申请号：PCT/US2018/066456

申请日：2018-12-19

Applicant: QUALCOMM INCORPORATED

Inventor： HOSSEINI, Seyedkianoush ,  CHEN, Wanshi ,  PATEL, Shimman, Arvind

IPC: H04W72/04 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques generally support downlink transmissions. For example, a user equipment (UE) may receive a resource configuration for reception of a downlink transmission within a repetition window, the resource configuration including an indicator of a repetition window size for the downlink transmission. The UE may monitor, according to the resource configuration, one or more transmission time intervals (TTIs) of the repetition window for reception of the downlink transmission. In some cases, the downlink transmission may be a grant-free downlink transmission. Here, the UE may attempt to decode the grant-free downlink transmission during the one or more TTIs based at least in part on the repetition window size. Using the described techniques, the UE may efficiently determine one or more decoding parameters for the grant-free downlink transmission, thereby providing benefits in terms of latency reduction, power consumption, etc.

公开(公告)号：WO2019099133A1

公开(公告)日：2019-05-23

申请号：PCT/US2018/055854

申请日：2018-10-15

Applicant: QUALCOMM INCORPORATED

Inventor： PATEL, Shimman, Arvind ,  HOSSEINI, Seyedkianoush ,  CHEN, Wanshi

IPC: H04L1/18 ,  H04L1/08 ,  H04L1/16

CPC classification number: H04W72/0446 ,  H04L1/0003 ,  H04L1/08 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1887 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communications are described. To satisfy a (block error rate) BLER target for a transmission of a transport block while limiting latency (e.g., keeping latency within a latency budget), base stations and user equipments (UEs) may support techniques for utilizing repetition-based transmissions of the transport block in combination with hybrid automatic repeat request (HARQ) retransmissions of the transport block. That is, base stations and UEs may support techniques for transmitting multiple repetitions (i.e., copies) of the transport block without first receiving HARQ feedback, in addition to retransmitting one or more copies of the transport block when a receiving device fails to successfully decode at least one of the originally transmitted copies of the transport block (as indicated through HARQ feedback).

公开(公告)号：WO2019094601A1

公开(公告)日：2019-05-16

申请号：PCT/US2018/059843

申请日：2018-11-08

Applicant: QUALCOMM INCORPORATED

Inventor： YERRAMALLI, Srinivas ,  MALIK, Rahul ,  CHAKRABORTY, Kaushik

IPC: H04L5/00 ,  H04L27/00 ,  H04L5/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive data transmissions on primary cell and transmit feedback for the data transmissions on a secondary cell, where carriers on the secondary cell have a subcarrier spacing that is greater than the subcarrier spacing of carriers on the primary cell. The UE may perform a self-contained transmission by receiving data and transmitting feedback within a single transmission opportunity. The base station may schedule the UE for only downlink transmissions in the primary cell, removing uplink transmission resources and guard periods from slots of primary cell carriers. The UE may transmit other information on the high band cell as well, such as a channel quality indicator or scheduling requests. The base station may apply rate adjustments for downlink transmission in the next slot of a primary cell carrier.

公开(公告)号：WO2019089346A1

公开(公告)日：2019-05-09

申请号：PCT/US2018/057530

申请日：2018-10-25

Applicant: QUALCOMM INCORPORATED

Inventor： HOSSEINI, Seyedkianoush ,  FARAJIDANA, Amir ,  CHO, Young Geun

IPC: H04L1/18 ,  H04L1/16

Abstract: Methods, systems, and devices for wireless communications are described. A UE may configure a physical uplink shared channel (PUSCH) using shortened transmission time intervals (sTTIs), which may be referred to as a shortened PUSCH (sPUSCH), to transmit uplink control information (UCI) to a base station or other wireless device. The UE may use mapping rules, which may be based at least in part on a number of data symbols included in the sPUSCH, to map different types of UCI to different resource elements (REs) within the sPUSCH. A base station or other wireless device may use mapping rules, which may be based at least in part on a number of data symbols included in an sPUSCH, to determine one or more REs within the sPUSCH to monitor for different types of UCI.

公开(公告)号：WO2019060831A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/052451

申请日：2018-09-24

Applicant: QUALCOMM INCORPORATED

Inventor： LI, Chong ,  CHEN, Wanshi ,  JIANG, Jing ,  SUN, Jing

IPC: H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described. A base station and a user equipment (UE) may communicate in a high reliability and low latency communications system (e.g., ultra-reliable low latency communications (URLLC)). The base station may signal a UE-specific scheduling request (SR) repetition configuration that the UE may utilize to transmit an instantaneous SR when a buffer status report (BSR) is triggered by a new data packet. The UE may repeatedly transmit the SR until a number of repetitions or a time period of repetitions is met or an uplink grant is received from the base station. The SR repetition configuration may include a number of parameters including a repetition setting, power settings, a resource allocation, and an acknowledgement/negative acknowledgment (ACK/NACK) procedure.

公开(公告)号：WO2019060676A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/052159

申请日：2018-09-21

Applicant: QUALCOMM INCORPORATED

Inventor： HOSSEINI, Seyedkianoush ,  RICO ALVARINO, Alberto

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may adjust control overhead assumptions when reporting a channel state indictor (CSI). A base station may configure resource block (RB) sets for the UE by radio resource control (RRC) signaling. The UE may assume that the RB sets as configured are assigned for control information. When the UE reports wideband CSI, it may be assumed that the resources for an RB set are not available for data transmission. Any portion of a band configured for the UE overlapping with an RB set may be considered unavailable for data transmission. The UE may then calculate CSI based on the updated control overhead assumption. In other examples, the UE may make a worst-case assumption for control overhead. In some cases, the UE may assume there is no control overhead.

公开(公告)号：WO2019060532A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/051933

申请日：2018-09-20

Applicant: QUALCOMM INCORPORATED

Inventor： HOSSEINI, Seyedkianoush ,  FARAJIDANA, Amir ,  SAHAI, Achaleshwar

IPC: H04B7/0456 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may precode downlink signals to be transmitted to a user equipment (UE) using a precoding matrix. The precoding matrix may be selected by a UE from a number of precoding matrices (e.g., a codebook) and reported to the base station in a channel state information (CSI) report. As described herein, a base station may support techniques for limiting a number of precoding matrices that a UE may evaluate to identify a preferred precoding matrix to be indicated to the base station. In addition, the techniques described herein allow a base station to dynamically indicate an appropriate set of precoding matrices for the UE to evaluate based on the channel conditions at a given time.

公开(公告)号：WO2019055416A1

公开(公告)日：2019-03-21

申请号：PCT/US2018/050472

申请日：2018-09-11

Applicant: QUALCOMM INCORPORATED

Inventor： NAM, Wooseok ,  LUO, Tao ,  MANOLAKOS, Alexandros ,  GAAL, Peter ,  MONTOJO, Juan ,  HUANG, Yi

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a resource grant for a data communication within a transmission time interval (TTI). The UE may receive, from the base station, an indication of a control signal configuration and an end symbol index associated with the resource grant. The UE may identify, based at least in part on the received indication, a plurality of symbol positions in the TTI in which reference signals are to be communicated in conjunction with the data communication.