公开(公告)号：US20170207894A1

公开(公告)日：2017-07-20

申请号：US15272246

申请日：2016-09-21

Applicant: QUALCOMM Incorporated

Inventor： Renqiu WANG ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL ,  Xiao Feng WANG ,  Alberto RICO ALVARINO ,  Seyed Ali Akbar FAKOORIAN ,  Jing LEI

IPC: H04L5/00

CPC classification number: H04L5/0055 ,  H04J13/16 ,  H04J2013/165 ,  H04L1/1664 ,  H04L1/1685 ,  H04L1/1692

Abstract: The present disclosure provides various modifications to existing techniques for transmitting ACK and/or NACK in an narrow band communications system. For example, in a first aspect, an apparatus receives a downlink transmission and transmits a single tone ACK on an ACK channel using time-spreading. In another aspect, an apparatus determines whether an ACK has been received from a UE within a threshold amount of time, and when an ACK has not been received from the UE for at least the threshold amount of time, transmitting an indication to the UE to transmit regarding the ACK

公开(公告)号：US20170201989A1

公开(公告)日：2017-07-13

申请号：US15371885

申请日：2016-12-07

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar FAKOORIAN ,  Alberto RICO ALVARINO ,  Peter GAAL ,  Wanshi CHEN ,  Yongbin WEI ,  Juan MONTOJO ,  Renqiu WANG ,  Hao XU ,  Xiaofeng WANG

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04L5/0046 ,  H04L5/0048 ,  H04L27/2078

Abstract: Aspects of the present disclosure provide techniques for uplink (UL) data channel design. An example method is provided for operations which may be performed by a first apparatus. The example method generally comprises determining a number of pilot symbols to transmit for one or more slots of a first subframe based, at least in part, on a coverage enhancement (CE) level, and transmitting at least one uplink data channel having the determined number of pilot symbols in the one or more slots of the first subframe.

公开(公告)号：US20170201393A1

公开(公告)日：2017-07-13

申请号：US15376490

申请日：2016-12-12

Applicant: QUALCOMM Incorporated

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

IPC: H04L25/02 ,  H04L25/03 ,  H04L1/06 ,  H04L5/00

CPC classification number: H04L25/0202 ,  H04B7/0613 ,  H04B7/068 ,  H04B7/0684 ,  H04L1/0606 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0208 ,  H04L25/0232 ,  H04L25/03866 ,  H04W4/70 ,  H04W84/042

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for implementing a data transmission scheme for Narrow-Band Internet of Things (NB-IoT). A User Equipment (UE) combines pairs of antenna ports to generate at least first and second combined antennas ports. The UE receives reference signals transmitted in a narrow band region of a larger system bandwidth, and for each combined port, adds the references signals received on resource elements (REs) of each of the combined pair of antenna ports. The UE determines channel estimates for each combined antenna port based on the added reference signals for the combined port.

公开(公告)号：US20170164340A1

公开(公告)日：2017-06-08

申请号：US15439141

申请日：2017-02-22

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Wanshi CHEN ,  Yongbin WEI ,  Peter GAAL ,  Tingfang JI

IPC: H04W72/04 ,  H04B7/0413 ,  H04W16/28 ,  H04W4/00

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04W4/70 ,  H04W16/28 ,  H04W28/06 ,  H04W48/12 ,  H04W84/042

Abstract: The described aspects include methods and apparatus providing MTC in a wireless network. In an aspect, a narrow bandwidth within a wide system bandwidth is allocated for communicating data related to MTC. MTC control data generated for communicating over one or more MTC control channels for an MTC UE within the narrow bandwidth is transmitted over the one or more MTC control channels. The one or more MTC channels are multiplexed with one or more legacy channels over the wide system bandwidth. Other aspects are provided for transmission mode and content of the MTC control data or other MTC data.

公开(公告)号：US20170142695A1

公开(公告)日：2017-05-18

申请号：US15350988

申请日：2016-11-14

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Peter GAAL

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

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0016 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0091 ,  H04L5/14 ,  H04W72/0413

Abstract: The present disclosure describes various aspects related to techniques for downlink assignment index (DAI) management in carrier aggregation. In one aspect, a method is provided in which a user equipment receives a DAI indicating a total number of DL assignments or codewords. This method may further include interpreting the DAI received from the base station based at least on whether the DAI is received from the base station in a DL grant or a uplink (UL) grant. In another aspect, a method is provided in which a base station determines whether to transmit a DAI in a DL grant or a uplink (UL) grant, and transmits the DAI in the DL grant or the UL grant to one or more user equipments (UEs) based on the determination.

公开(公告)号：US20170134236A1

公开(公告)日：2017-05-11

申请号：US15194278

申请日：2016-06-27

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Wanshi CHEN ,  Peter GAAL ,  Hao XU ,  Juan MONTOJO ,  Durga Prasad MALLADI

IPC: H04L12/24 ,  H04L5/00 ,  H04B7/06 ,  H04W72/04 ,  H04W74/00

CPC classification number: H04L41/0896 ,  H04B7/0626 ,  H04L5/0044 ,  H04L5/0051 ,  H04L5/0055 ,  H04L5/1469 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1294 ,  H04W74/004

Abstract: Various aspects described herein relate to communicating using a configurable bandwidth. A user equipment (UE) can receive a control channel from a serving evolved Node B (eNB), where the control channel includes a resource grant for an uplink shared data channel including a number of resource block groups starting from a starting resource block group in an allocation space, and where the allocation space includes a plurality of resource block groups in a frequency domain over a plurality of symbols in a time domain. The UE can transmit data in the uplink shared data channel starting from the starting resource block group in the allocation space and continuing through the number of resource block groups in the allocation space over the frequency domain first and over the time domain second.

公开(公告)号：US20170134148A1

公开(公告)日：2017-05-11

申请号：US15270720

申请日：2016-09-20

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Peter GAAL ,  Tao LUO ,  Wanshi CHEN

IPC: H04L5/00 ,  H04W48/16 ,  H04W72/04

CPC classification number: H04L5/0094 ,  H04W16/14 ,  H04W48/16 ,  H04W72/042

Abstract: The disclosure provides for receiving a downlink transmission for wireless communications. A user equipment (UE) may receive, on a primary component carrier, an indication that a subframe of a secondary component carrier includes a discovery reference signal. During the subframe, the UE may receive, on the secondary component carrier over an unlicensed spectrum, a transmission including the discovery reference signal. The UE may rate match the transmission based on the indication. The disclosure further provides for discovering timing information during wireless communications. The UE may receive on a primary component carrier, an indication that a set of subframes of a carrier of a neighboring cell includes a discovery reference signal. The UE may determine a subframe to receive the discovery reference signal based on the indication. The UE may receive during the subframe, the discovery reference signal from the neighboring cell in an unlicensed spectrum.

公开(公告)号：US20170126356A1

公开(公告)日：2017-05-04

申请号：US15409350

申请日：2017-01-18

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Tingfang JI ,  Peter GAAL ,  Wanshi CHEN ,  Zhifei FAN ,  Yongbin WEI

IPC: H04L1/00 ,  H04W76/06 ,  H04W72/04

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a UE. The UE determines CSI. The UE determines whether to send the CSI based on at least one of a timer or a threshold. The UE sends the CSI upon determining to send the CSI. The UE may send the CSI in a MAC header upon determining to send the CSI. When the UE determines whether to send the CSI based on the threshold, the UE may determine whether to send the CSI based on a difference between the CSI and reference CSI. The UE may determine the reference CSI based on at least one of previously reported CSI, fixed CSI, or an MCS of a received data transmission from a base station. The UE may send CSI to the base station in an initial connection setup with the base station.

公开(公告)号：US20170118792A1

公开(公告)日：2017-04-27

申请号：US15236947

申请日：2016-08-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W76/04 ,  H04W72/04 ,  H04W52/02

CPC classification number: H04W72/042 ,  H04L1/1822 ,  H04L1/189 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0057 ,  H04W4/70 ,  H04W52/0225 ,  H04W76/28 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/21 ,  Y02D70/24 ,  Y02D70/26

Abstract: In eMTC, channels may be bundled, using repetitions in multiple subframes. SPS and DRX for eMTC may not accommodate such repetitions, because repetitions for a bundled 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 bundled M-PDCCH candidate and determining that the DRX ON duration at least partially overlaps with the set of subframes of the bundled M-PDCCH. The apparatus then refrains from decoding the first bundled M-PDCCH candidate, decodes the first bundled M-PDCCH candidate, or extends the DRX ON duration to include the set of subframes entirely and decoding the first bundled M-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：US20170118747A1

公开(公告)日：2017-04-27

申请号：US15246082

申请日：2016-08-24

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L1/18

CPC classification number: H04W72/0413 ,  H04L1/08 ,  H04L1/1861 ,  H04L5/0053 ,  H04L5/14 ,  H04L5/16 ,  H04W4/70 ,  H04W72/042

Abstract: Aspects of the present disclosure provide hybrid automatic repeat request (HARQ) techniques for enhanced machine type communication (eMTC). In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE) for determining a HARQ ID. The method generally includes determining a HARQ ID based, at least in part, on a coverage enhancement (CE) level, and performing a HARQ process timeline based, at least in part, on the determined HARQ ID. Another method is provided for determining a subframe to transmit feedback. The method generally includes determining at least one subframe to transmit a physical uplink control channel (PUCCH) to acknowledge one or more downlink transmissions based, at least in part, on availability of uplink subframes following one or more downlink subframes carrying the downlink transmissions to be acknowledged and transmitting the PUCCH in the determined at least one subframe.