公开(公告)号：US10237103B2

公开(公告)日：2019-03-19

申请号：US15078087

申请日：2016-03-23

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Tingfang Ji ,  June Namgoong ,  Joseph Binamira Soriaga

IPC: H04L27/26 ,  H04L5/00 ,  H04B7/06 ,  H04B7/0456

Abstract: Aspects provide for selecting a precoder mode for a transmission, changing a cyclic prefix (CP) length based on the selected precoder mode, and transmitting a signal that includes the changed CP length. Changing the CP length may involve using the selected precoder mode to lookup a value by which to change a nominal CP length. After changing the CP length, information indicating the changed CP length may be transmitted to a receiver of the signal. Precoder mode selection may be based on feedback information that indicates whether a receiver requests a change to the CP length. Precoder mode selection may be based on a received reference signal that indicates a condition of a communication channel. The reference signal may be used to select the precoder mode that results in the smallest relative delay spread, the largest relative delay spread compression, the largest relative beamforming gain, and/or the largest relative throughout.

公开(公告)号：US20190059084A1

公开(公告)日：2019-02-21

申请号：US16103506

申请日：2018-08-14

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Juan Montojo ,  Tingfang Ji

IPC: H04W72/04 ,  H04W72/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit or otherwise indicate a semi-static slot format configuration and a dynamic slot format configuration to a user equipment (UE). The UE may determine a slot format configuration based on the received semi-static and dynamic slot format configurations. In some cases, the UE may replace certain resources of the semi-static slot format configuration with resources from the dynamic slot format configuration depending on a certain embodiment. Additionally or alternatively, the base station may transmit an anchor slot configuration to the UE, which may indicate which resources of the semi-static slot format configuration can be overridden or replaced by the dynamic slot format configuration.

公开(公告)号：US10211955B2

公开(公告)日：2019-02-19

申请号：US15711143

申请日：2017-09-21

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Tingfang Ji ,  Peter Gaal

IPC: H04K1/10 ,  H04L27/28 ,  H04L5/00 ,  H04W72/04 ,  H04L5/02

Abstract: Methods, systems, and devices for wireless communication are described. A base station may communicate with a user equipment (UE) using frequency resources (e.g., subcarriers) with scalable channel spacing and time resources (e.g., slots) with variable slot durations. The individual slots may include multiple symbols, and each symbol may be allocated for communication in a specific link direction (e.g., uplink, downlink, or sidelink). For UEs configured to operate in a half-duplex mode, the base station may allocate sufficient time for the UE to transition between uplink and downlink configurations. In other cases, for carrier aggregation, the base station may coordinate with the UE to prevent conflicting communications (e.g., simultaneous uplink and downlink transmissions). UEs or other devices may communicate directly with one another in a device-to-device configuration using the same or a similar scheme to allow for half-duplex devices to transition between sending and receiving.

公开(公告)号：US20190053262A1

公开(公告)日：2019-02-14

申请号：US16163261

申请日：2018-10-17

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Tingfang Ji ,  Joseph Binamira Soriaga ,  John Smee ,  Naga Bhushan

IPC: H04W72/12 ,  H04L5/14 ,  H04L5/00 ,  H04W52/36 ,  H04L29/08 ,  H04L29/06 ,  H04L1/00 ,  H04W88/02 ,  H04W88/08

Abstract: Wireless communications systems and methods related to decoupling uplink latency using common uplink (UL) burst in Time Division Duplex (TDD) sub-frame structure are disclosed. User equipment (UE) can transmit to a base station a common UL burst in each sub-frame communicated between UE and the base station, wherein he common UL burst comprises at least one of: a physical layer (PHY) acknowledgement (ACK), a scheduling request (SR), a buffer status report (BSR), or a sounding reference signal (SRS). UE can be further configured to transmit scheduled UL payload data in at least one common UL burst of at least one sub-frame communicated between the UE and the base station.

公开(公告)号：US10205618B2

公开(公告)日：2019-02-12

申请号：US15851180

申请日：2017-12-21

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Jing Jiang ,  Yi Huang ,  Wei Zeng ,  Wanshi Chen ,  Tingfang Ji

IPC: H04B7/06 ,  H04L27/26 ,  H04B7/0404 ,  H04B7/0456 ,  H04J13/12

Abstract: A configurable new radio (NR) uplink (UL) transmission may use transmit diversity. A user equipment (UE) may identify an uplink transmission of at least one stream as using one of cyclic prefix orthogonal frequency division multiplexing or discrete Fourier transform spread orthogonal frequency division multiplexing. The UE may apply a precoding matrix to the at least one identified stream. The precoding matrix changes over time. The precoding matrix may change based on closed loop feedback, a precoding cycling pattern, and/or a code division multiplexing group. The UE may transmit the at least one identified stream from multiple antennas according to the applied precoding matrix.

公开(公告)号：US10200920B2

公开(公告)日：2019-02-05

申请号：US14803793

申请日：2015-07-20

Applicant: QUALCOMM Incorporated

Inventor： Keiichi Kubota ,  Tingfang Ji ,  Naga Bhushan ,  Gavin Bernard Horn ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Wei Zeng

IPC: H04L12/18 ,  H04W36/00 ,  H04W48/12 ,  H04B7/0413

Abstract: A wireless network may provide system information by either a fixed periodic broadcast or broad-beam transmission or in response to a request by a user equipment (UE). The wireless network may broadcast (or broad-beam transmit) a signal that indicates to the UEs within a cell or zone coverage area that system information is to be transmitted on a fixed periodic schedule or in response to a request sent by one or more UEs.

公开(公告)号：US20190036673A1

公开(公告)日：2019-01-31

申请号：US16042581

申请日：2018-07-23

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Heechoon Lee ,  Peter Gaal ,  Juan Montojo ,  Tingfang Ji

IPC: H04L5/00 ,  H04W28/20 ,  H04W8/22 ,  H04L1/18 ,  H04L1/16

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a limit on a number of concurrently active bandwidth parts, wherein the limit applies per component carrier used by the UE or across component carriers used by the UE. The UE may communicate using one or more bandwidth parts on one or more component carriers used by the UE based at least in part on the limit, wherein at least one bandwidth part of the one or more bandwidth parts is less than a full bandwidth that the UE is capable of using. Numerous other aspects are provided.

公开(公告)号：US10182426B2

公开(公告)日：2019-01-15

申请号：US14881996

申请日：2015-10-13

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  Krishna Kiran Mukkavilli ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Naga Bhushan ,  Jing Jiang

IPC: H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04W72/08 ,  H04W88/06

Abstract: Techniques are described for wireless communication. An exemplary method includes receiving, at a first device, a pre-scheduling message for a downlink transmission from a second device; transmitting a scheduling message to the second device in response to receiving the pre-scheduling message; and receiving the downlink transmission in accordance with the at least one downlink transmission parameter of the scheduling message. The scheduling message may include at least one downlink transmission parameter. Another exemplary method includes transmitting, to a first device, a pre-scheduling message for a downlink transmission; receiving, from the first device, a scheduling message comprising at least one downlink transmission parameter; and transmitting the downlink transmission to the first device in accordance with the at least one downlink transmission parameter of the scheduling message.

公开(公告)号：US20190007179A1

公开(公告)日：2019-01-03

申请号：US15981442

申请日：2018-05-16

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Tingfang Ji ,  Sony Akkarakaran ,  Haitong Sun ,  Peter Gaal

IPC: H04L5/00 ,  H03M13/09 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A device—such as a base station or user equipment (UE)—may transmit a demodulation reference signal (DMRS) including signaling information in addition to channel estimation information. To improve reception of the DMRS signaling information, the transmitting device may employ data protection techniques to the signaling information and modify a data payload transmitted in the physical data channel associated with the DMRS. In one aspect, the transmitting device may modify cyclic redundancy check (CRC) bits in the payload to include verification for the signaling information. In another aspect, the transmitting device may determine a scrambling code based on the signaling information, and may scramble the payload based on the scrambling code.

公开(公告)号：US10171195B2

公开(公告)日：2019-01-01

申请号：US15727805

申请日：2017-10-09

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Alexei Gorokhov ,  Michael McCloud ,  Tingfang Ji

IPC: H04W72/08 ,  H04J11/00 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a user equipment that receives a configuration with carrier aggregation. The apparatus may determine a first starting symbol for a PDSCH. In one aspect, the first starting symbol for the PDSCH may be determined based at least in part on a blind detection.