公开(公告)号：US10219292B2

公开(公告)日：2019-02-26

申请号：US14869152

申请日：2015-09-29

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Taesang Yoo ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Madhavan Srinivasan Vajapeyam ,  Durga Prasad Malladi ,  Yongbin Wei ,  Tao Luo

IPC: H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communication are described. A base station may employ a multiplexing configuration based on latency and efficiency considerations. The base station may transmit a resource grant, a signal indicating the length of a downlink (DL) transmission time interval (TTI), and a signal indicating the length of a subsequent uplink (UL) TTI to one or more user equipment (UEs). The base station may dynamically select a new multiplexing configuration by, for example, setting the length of an UL TTI to zero or assigning multiple UEs resources in the same DL TTI. Latency may also be reduced by employing block feedback, such as block hybrid automatic repeat request (HARQ) feedback. A UE may determine and transmit HARQ feedback for each transport block (TB) of a set of TBs, which may be based on a time duration of a downlink TTI.

公开(公告)号：US10164746B2

公开(公告)日：2018-12-25

申请号：US15153419

申请日：2016-05-12

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Taesang Yoo ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04J3/00 ,  H04L5/00 ,  H04W72/04 ,  H04W72/14

Abstract: A network may use enhanced sounding reference signal (SRS) transmission techniques to support reference signal transmissions over shared spectrum. For example, a wireless device may receive an uplink grant and an indicator. The uplink grant may include an uplink resource allocation to the wireless device and the indicator may alert the device of a forthcoming reference signal transmission. The wireless device may use the uplink grant and the indicator to determine a reference signal transmission period relative to the resources assigned in the uplink grant. For example, the wireless device may determine that the reference signal transmission period is prior to, during, or subsequent to the uplink transmission period. In some cases, a wireless device may be aperiodically or periodically scheduled for reference signal transmissions.

公开(公告)号：US20180279311A1

公开(公告)日：2018-09-27

申请号：US15924674

申请日：2018-03-19

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Xiaoxia Zhang ,  Tao Luo ,  Dinkar Vasudevan ,  Juan Montojo

IPC: H04W72/04 ,  H04W8/24 ,  H04W72/12

CPC classification number: H04W72/0453 ,  H04B17/11 ,  H04B17/21 ,  H04B17/309 ,  H04W8/245 ,  H04W72/12

Abstract: The present disclosure describes over-the-air UL-DL reciprocity calibration of UEs. In some embodiments, the UE may perform the calibration at the UE, while in other embodiments the BS may determine the calibration parameters for a UE and send the parameters to the UE for implementation. The BS may explicitly or implicitly transmit an UL channel estimate to the UE for use with the DL channel estimate. The UE determine calibration parameters to implement at the UE based on the BS feedback. Alternatively, the BS may transmit UE calibration parameters determined as a byproduct if the BS's own calibration procedure. The UE may instead participate in a calibration procedure with another UE. Under any approach, the UE may implement in its RF chain the results of the calibration procedure.

公开(公告)号：US10034269B2

公开(公告)日：2018-07-24

申请号：US15489599

申请日：2017-04-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Juan Montojo ,  Taesang Yoo ,  Siddhartha Mallik ,  Andrei Radulescu ,  Chirag Patel ,  Chengjin Zhang

IPC: H04W68/02 ,  H04W76/28 ,  H04W16/14 ,  H04W88/02 ,  H04W88/08 ,  H04W72/00 ,  H04W72/04 ,  H04W68/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a configuration for enhanced paging to a UE being served by a cell over a shared frequency band. The enhanced paging may include multiple paging intervals for each paging cycle. The UE may enable reception for a paging interval and determine whether the UE receives a downlink transmission. The UE may lengthen a paging interval or enable reception during a second paging interval based in part on determining whether the UE receives a downlink transmission. In some examples, the UE may receive a paging queue status indication indicating that paging information will be transmitted during a paging interval or a later interval, or indicating that no paging information is present at a serving cell.

公开(公告)号：US10033558B2

公开(公告)日：2018-07-24

申请号：US15442482

申请日：2017-02-24

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Dinkar Vasudevan ,  Seyedkianoush Hosseini ,  Jing Sun ,  Xiaoxia Zhang ,  Siddhartha Mallik ,  Juan Montojo

IPC: H04W4/00 ,  H04L25/03 ,  H04B17/14 ,  H04L27/34 ,  H04L12/703 ,  H04B7/024 ,  H04L25/02 ,  H04B17/11 ,  H04B17/30

Abstract: Wireless communications systems and methods related to over-the-air uplink-downlink (UL-DL) reciprocity calibration. A central unit transmits downlink (DL) calibration reference signal (RS) and a calibration request. The central unit receives, in response to the calibration request, a first uplink (UL) calibration RS and a first DL channel estimate associated with a first transmission point (TP) and a first wireless communication device. The central unit transmits a DL coordinated multipoint (CoMP) joint transmission signal according to an uplink-downlink (UL-DL) reciprocity calibration. The UL-DL reciprocity calibration is based on at least a first UL channel estimate based on the first UL calibration RS, the first DL channel estimate, a second UL channel estimate associated with a second TP and the first wireless communication device, and a second DL channel estimate associated with the second TP and the first wireless communication device.

公开(公告)号：US10021677B2

公开(公告)日：2018-07-10

申请号：US14882165

申请日：2015-10-13

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Arumugam Chendamarai Kannan ,  Yongbin Wei ,  Jelena Damnjanovic ,  Durga Prasad Malladi ,  Tao Luo

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/0025 ,  H04L1/0027 ,  H04L1/0039 ,  H04L1/1861 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/0446

Abstract: Methods, systems, and devices are described for wireless communication employing two-stage control channel messaging. Systems, methods, and apparatuses for two stage two-stage physical downlink control channel (PDCCH) with a downlink control information (DCI) flag and DCI format size indicator are described. For instance, the present disclosure presents an example method of wireless communication at a wireless device, which may include receiving, at a first bandwidth and during a transmission time interval (TTI), a first control channel message. In addition, the example method may include determining, based on a flag in the first control channel message, whether a second control channel message is present in the TTI. Furthermore, the example method may include receiving, at a second bandwidth, the second control channel message where the flag indicates that the second control channel message is present for the TTI.

公开(公告)号：US10015691B2

公开(公告)日：2018-07-03

申请号：US14883487

申请日：2015-10-14

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Aleksandar Damnjanovic ,  Taesang Yoo

IPC: H04W24/10 ,  H04L1/00 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W24/10 ,  H04L1/0026 ,  H04L5/0048 ,  H04W72/0446

Abstract: Techniques are provided for transmitting reference signals and CSI reports within a wireless communications system using variable length downlink or uplink transmission time intervals (TTIs). CSI reference signals and CSI reports may be transmitted at times that accommodate the variable length TTIs. A UE may receive signaling that indicates when a CSI reference signal is to be transmitted, and when a CSI report is to be transmitted to a base station. CSI reporting may be performed periodically using a physical uplink control channel (PUCCH) in designated uplink symbols, may be aperiodic using a physical uplink shared channel (PUSCH), or a combination thereof. A UE may receive signaling indicating periodic CSI reporting, aperiodic CSI reporting, or both. Such signaling may be received, for example, via radio resource control (RRC) signaling or within a downlink or uplink grant.

公开(公告)号：US20180160437A1

公开(公告)日：2018-06-07

申请号：US15829609

申请日：2017-12-01

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Farhad Meshkati ,  Yongbin Wei ,  Taesang Yoo ,  Xiaoxia Zhang

IPC: H04W72/12

Abstract: Wireless communications systems and methods related to improving detectability of interference management signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first reservation signal indicating a reservation for a first transmission slot in a spectrum accessed by a plurality of network operating entities. The first wireless communication device and the second wireless communication device are associated with a first network operating entity of a plurality of network operating entities. The first reservation signal includes a duration based on a power class associated with the first network operating entity. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in the first transmission slot.

公开(公告)号：US09992004B2

公开(公告)日：2018-06-05

申请号：US14965458

申请日：2015-12-10

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jelena Damnjanovic

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04L1/00

CPC classification number: H04L5/0055 ,  H04L1/0057 ,  H04L1/0089 ,  H04L1/18 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1896 ,  H04W72/0446

Abstract: Methods, systems, and devices are described for wireless communication. Wireless devices may exchange data using Medium Access Control (MAC) layer units known as transport blocks. The transport blocks may be partitioned into code block clusters (CBCs), each of which may include one or more code blocks. A receiving device may attempt to decode a transport block and send acknowledgement (ACK) and negative-acknowledgment (NACK) information to the transmitting device based on the whether each CBC was successfully decoded. The transmitting device may retransmit a redundancy version of a CBC for each NACK received. The transmitting device may group CBCs in segments of a transport block according to redundancy version. In some cases, the transmitting device may send a control message in a control channel which indicates the composition of the transport block.

公开(公告)号：US09991989B2

公开(公告)日：2018-06-05

申请号：US15173206

申请日：2016-06-03

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Yongbin Wei ,  Taesang Yoo ,  Siddhartha Mallik ,  Jing Sun

IPC: H04L1/00 ,  H04L1/18 ,  H04B17/336 ,  H03M13/45 ,  H04W84/04

CPC classification number: H04L1/0045 ,  H03M13/45 ,  H04B17/336 ,  H04L1/1812 ,  H04L1/1835 ,  H04L1/1845 ,  H04W84/042

Abstract: Methods, systems, and devices for soft hybrid automatic repeat request operation in wireless communication are described. A user equipment (UE) may fail to decode a received signal, for example. The UE may store a portion of the signal in a buffer if the signal size is greater than the buffer size; otherwise, the UE may store the entire signal in the buffer. The UE may then receive a second signal and combine the second signal with the stored portion of the first signal; the combined signal may be larger than the buffer size. This combined signal may, for example, have a code rate less than the first signal. The UE may perform a second decoding attempt on the combined signal. The UE may determine that the second decoding attempt failed and may store a portion of the combined signal in the buffer.