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：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：US20200214019A1

公开(公告)日：2020-07-02

申请号：US16816404

申请日：2020-03-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Shimman Arvind Patel ,  Peter GAAL ,  Hao XU ,  Yongbin WEI ,  Madhavan Srinivasan VAJAPEYAM ,  Aleksandar DAMNJANOVIC

IPC: H04W72/10 ,  H04L1/00 ,  H04W72/12 ,  H04W72/04 ,  H04W72/00 ,  H04L5/00

Abstract: Various aspects described herein relate to receiving a first communication over a first set of resources based on a first transmission time interval (TTI), receiving a second communication over a second set of resources based on a second TTI, where the second TTI is smaller than the first TTI, and where the second set of resources overlap the first set of resources defining a common set of resources, and determining whether to prioritize decoding of the first communication over the second communication.

公开(公告)号：US20190274179A1

公开(公告)日：2019-09-05

申请号：US16416116

申请日：2019-05-17

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan VAJAPEYAM ,  Gavin Bernard HORN ,  Jelena DAMNJANOVIC ,  Peter GAAL ,  Aleksandar DAMNJANOVIC

IPC: H04W76/18 ,  H04W36/08 ,  H04W36/30 ,  H04L1/20 ,  H04W76/19 ,  H04L1/18 ,  H04W24/04

Abstract: Certain aspects of the present disclosure provide procedures for managing secondary eNB (SeNB) radio link failure (S-RLF) in dual connectivity scenarios. A user equipment (UE) may establish communication with a Master Evolved Node B (MeNB) and a Secondary eNB (SeNB). The UE may detect a Radio Link Failure (RLF) of a connection with the SeNB and may transmit an indication of the RLF to the MeNB, in response to the detection. The MeNB may take at least one action to manage the RLF, in response to receiving the indication of the RLF, for example, including transmitting a reconfiguration command to the UE. The SeNB may also detect the RLF and transmit an indication of the RLF to the MeNB over a backhaul connection, in response to the detection.

公开(公告)号：US20170127470A1

公开(公告)日：2017-05-04

申请号：US15227310

申请日：2016-08-03

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan VAJAPEYAM ,  Alberto RICO ALVARINO ,  Masato KITAZOE

IPC: H04W76/04 ,  H04W68/02

CPC classification number: H04W76/28 ,  H04W68/00 ,  H04W68/02

Abstract: A UE in an eDRX cycle may miss an SI change notification because the UE's receiver may be powered down during the entire modification period prior to the SI change. An apparatus for wireless communication at a base station may transmit SI, change the SI during a period of eDRX by a UE, and transmit the changed SI. The apparatus ensures that a UE receives an SI change notification, even when performing eDRX, by transmitting at least one notification associated with the changed SI after the transmission of the changed SI and during a paging occasion for the UE. In another aspect, an apparatus for wireless communication at a UE enters into an eDRX cycle and receives, after an SI change, a notification associated with the SI change.

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.

公开(公告)号：US20160234856A1

公开(公告)日：2016-08-11

申请号：US15040794

申请日：2016-02-10

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Renqiu WANG ,  Peter GAAL ,  Wanshi CHEN ,  Yongbin WEI ,  Madhavan Srinivasan VAJAPEYAM ,  Valentin Alexandru GHEORGHIU

IPC: H04W72/08 ,  H04L5/00 ,  H04B17/318 ,  H04W72/02 ,  H04W72/00 ,  H04W4/00 ,  H04W72/04

CPC classification number: H04B17/318 ,  H04B17/336 ,  H04L5/0048 ,  H04W4/70

Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a user equipment (UE). An exemplary method, performed by a UE, generally includes determining an additional set of resources to use to enhance measurement of one or more metrics indicative of channel conditions based on measurement of reference signals during a measurement procedure, wherein the additional set of resources are in addition to a defined set of resources used to measure the one or more metrics and performing the measurement procedure based at least on the reference signals, the additional set of resources, and one or more measurement parameters

Abstract translation: 本公开的方面提供了用于由用户设备（UE）进行无线通信的技术。 由UE执行的示例性方法通常包括确定用于在测量过程期间基于参考信号的测量来增强指示信道条件的一个或多个度量的附加资源的附加集合，其中所述附加资源集合在 除了用于测量一个或多个度量并且至少基于参考信号，附加资源集合和一个或多个测量参数来执行测量过程的定义的一组资源之外

公开(公告)号：US20160227513A1

公开(公告)日：2016-08-04

申请号：US15009739

申请日：2016-01-28

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan VAJAPEYAM ,  Hao XU ,  Wanshi CHEN ,  Peter GAAL ,  Masato KITAZOE ,  Miguel GRIOT

IPC: H04W68/02 ,  H04W72/04 ,  H04W74/08 ,  H04W68/00

CPC classification number: H04W68/02 ,  H04W4/06 ,  H04W4/70 ,  H04W68/005 ,  H04W68/025 ,  H04W72/0446 ,  H04W74/0833

Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to enhanced paging procedures for devices with limited communications resources, such as machine type communication (MTC) devices and enhanced or evolved MTC (eMTC) devices. An example method generally includes determining a set of subframes corresponding to a paging occasion for the UE to receive a paging message from a base station (BS), determining, within the set of subframes, at least one narrowband region for receiving the paging message, and monitoring for the paging message in the at least one narrowband region within the set of subframes.

Abstract translation: 本公开的某些方面通常涉及无线通信，更具体地涉及用于具有有限通信资源的设备（例如机器类型通信（MTC）设备）和增强型或演进型MTC（eMTC）设备的增强寻呼过程。 示例性方法通常包括：确定与寻呼机会相对应的一组子帧，以便UE从基站（BS）接收寻呼消息，在该组子帧内确定用于接收寻呼消息的至少一个窄带区域， 以及监视该组子帧内的至少一个窄带区域中的寻呼消息。

公开(公告)号：US20160227345A1

公开(公告)日：2016-08-04

申请号：US15008346

申请日：2016-01-27

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Seyed Ali Akbar FAKOORIAN ,  Peter GAAL ,  Wanshi CHEN ,  Madhavan Srinivasan VAJAPEYAM

IPC: H04W4/00 ,  H04W72/04 ,  H04W4/06

CPC classification number: H04W72/0406 ,  H04L5/0053 ,  H04L12/189 ,  H04W4/06 ,  H04W4/70

Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a user equipment (UE). An exemplary method, performed by a UE, generally includes determining one or more locations for receiving system information for machine type communication (MTC) over a bundled transmission and decoding the system information received at the locations over the bundled transmission.

Abstract translation: 本公开的方面提供了用于由用户设备（UE）进行无线通信的技术。 由UE执行的示例性方法通常包括确定用于通过捆绑传输接收用于机器类型通信（MTC）的系统信息的一个或多个位置，并对在捆绑传输上的位置处接收到的系统信息进行解码。