公开(公告)号：US10701717B2

公开(公告)日：2020-06-30

申请号：US15991591

申请日：2018-05-29

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W72/12 ,  G06F1/329 ,  H04L5/00 ,  H04W52/02 ,  H04W52/34 ,  H04W52/36 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may schedule an autonomous uplink (UL) transmission and a scheduled UL transmission during the same time period. The wireless device may determine that it is operating in a limited power state and therefore cannot transmit both the autonomous UL transmission and the scheduled UL transmission. The wireless device may prioritize one of the autonomous UL transmission and the scheduled UL transmission based at least in part on a priority configuration. The wireless device may receive the priority configuration from a base station (e.g., in radio resource control signaling).

公开(公告)号：US10700822B2

公开(公告)日：2020-06-30

申请号：US16244718

申请日：2019-01-10

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Tao Luo ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Durga Prasad Malladi ,  Hao Xu ,  Srinivas Yerramalli

IPC: H04W72/14 ,  H04L1/18 ,  H04W16/14 ,  H04W74/08

Abstract: Systems and methods for uplink transmission scheduling are disclosed. A wireless device may monitor at least two downlink sub-frames for scheduling grants. The wireless device may receive a first uplink scheduling grant in one of the at least two downlink sub-frames for at least a first uplink sub-frame and receive a second uplink scheduling grant in another of the at least two downlink sub-frames for at least the first uplink sub-frame. The wireless device may perform an uplink transmission in the first uplink sub-frame based on one or both of the first uplink scheduling grant and the second uplink scheduling grant. For the uplink transmission, the wireless device may select a most recent uplink scheduling grant or select an uplink scheduling grant received in a downlink sub-frame at least a minimum number of sub-frames before the first uplink sub-frame.

公开(公告)号：US10694493B2

公开(公告)日：2020-06-23

申请号：US16043023

申请日：2018-07-23

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04W8/24 ,  H04W68/00 ,  H04W68/02 ,  H04W52/02 ,  H04B1/7143 ,  H04B1/713 ,  H04W4/70

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for monitoring paging occasions. In one example, a mobile communication device defines a paging frame window (PFW) for a duration of time on a hop frequency or narrow band of frequencies indicated by a paging formula, and periodically wakes up to monitor the PFW for a page message. In another example, the mobile device receives a frame structure information at the start of a frame.

公开(公告)号：US20200162931A1

公开(公告)日：2020-05-21

申请号：US16687490

申请日：2019-11-18

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Srinivas Yerramalli ,  Jing Sun

IPC: H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W48/16 ,  H04W48/10

Abstract: Wireless communications systems and methods related to communications in a network that supports data transmitted in an unlicensed frequency band and a licensed frequency band are provided. A first wireless communication device communicates, with a second wireless communication device in a first frequency band, a first system information signal indicating a transmission configuration for a second system information signal in a second frequency band different from the first frequency band. The first wireless communication device communicates, with the second wireless communication device in the second frequency band, the second system information signal based on the transmission configuration.

公开(公告)号：US10652889B2

公开(公告)日：2020-05-12

申请号：US15635033

申请日：2017-06-27

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tamer Kadous ,  Chih-Hao Liu ,  Chirag Patel ,  Alberto Rico Alvarino

IPC: H04W72/04 ,  H04L1/12 ,  H04W74/08 ,  H04B1/713 ,  H04L1/18 ,  H04W4/70 ,  H04L29/08 ,  H04W28/26 ,  H04L5/00 ,  H04L5/14 ,  H04W16/14 ,  H04W88/02 ,  H04W88/08

Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A UE apparatus transmits uplink transmissions in a plurality of transmission units and hops frequency bands in a first pattern across frames based on a base station hopping pattern. The apparatus may transmit uplink transmissions based on dual hopping patterns, and may hop in a second pattern across transmission units within the base station's channel occupancy within a frame. A base station apparatus may hop frequency bands in a first pattern across frames based on a base station hopping pattern, and may receive uplink transmissions in a narrowband from a UE in a plurality of transmission units within the frequency bands based on the base station hopping pattern.

公开(公告)号：US10652854B2

公开(公告)日：2020-05-12

申请号：US16167417

申请日：2018-10-22

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W68/02 ,  H04W76/28 ,  H04W74/08 ,  H04W16/14 ,  H04L5/00 ,  H04B1/713 ,  H04W52/02 ,  H04W8/00 ,  H04W48/16 ,  H04W48/12

Abstract: A DRX/eDRX cycle may include a single PFW located in one of the non-anchor hopping frames and used to transmit a paging message. When the LBT procedure fails for the non-anchor hopping frame in which the PFW is located, transmission of the paging message may be delayed. Postponing the transmission of the paging message until a subsequent DRX/eDRX cycle be detrimental since the UE may not receive the change in system information at the next modification boundary. Thus, there is a need for paging mechanism the increases the chance of a UE receiving a paging message during a DRX/eDRX cycle. The present disclosure provides a paging mechanism that uses a PSFW with a PFW in each non-anchor hopping frame within a DRX/eDRX cycle. Hence, the chance of a UE receiving a paging message and hence the change in system information may be increased.

公开(公告)号：US10582502B2

公开(公告)日：2020-03-03

申请号：US16432534

申请日：2019-06-05

Applicant: QUALCOMM Incorporated

Inventor： Yongbin Wei ,  Durga Prasad Malladi ,  Tao Luo ,  Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen

IPC: H04W72/02 ,  H04W72/04 ,  H04L27/26 ,  H04W74/08 ,  H04W72/12

Abstract: Techniques for wireless communications over a shared radio frequency spectrum band, may include techniques for transmitting uplink data transmissions using allocated uplink resources. Allocated uplink resources may include an uplink channel comprising a number of allocated interlaces of resource blocks (RBs) for use by a user equipment (UE). An incoming data stream may be processed and data separated into each of the allocated interlaces of RBs for the UE. Such separation may be through demultiplexing the data stream to obtain data for the allocated interlaces of RBs. The demultiplexed data may be mapped onto associated resource elements associated with the allocated interlaces of RBs, and transmitted. Different types of uplink channels, such as a physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH) and/or a physical random access channel (PRACH) may be allocated to interlaces of RBs in one or more subframes of a transmitted radio frame.

公开(公告)号：US20190386737A1

公开(公告)日：2019-12-19

申请号：US16531538

申请日：2019-08-05

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04B7/26 ,  H04W16/24 ,  H04W36/06 ,  H04W48/18 ,  H01Q1/24 ,  H04W8/00 ,  H04W72/08 ,  H04B7/0491 ,  H04W16/14 ,  H04B7/06 ,  H04W36/30 ,  H04W4/70

Abstract: Described techniques provide for switching a user equipment (UE) between different coverage enhancement (CE) modes, such as between a non-CE mode and a CE mode. A UE may determine that a CE mode switch is to be performed and may initiate the mode switching. The UE may compare signal qualities of signals from one or more base stations against one or more threshold values and determine that a switch from a CE mode to a non-CE mode, or from a non-CE to CE mode, is to be performed. In some cases, a UE may be in idle mode and switch between CE modes, or may perform a cell reselection to a different base station. In other cases, a UE may be in connected mode and may declare a radio link failure to initiate a mode switch. A base station may initiate mode switching based on radio link monitoring of UEs.

公开(公告)号：US10512033B2

公开(公告)日：2019-12-17

申请号：US15009730

申请日：2016-01-28

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Peter Gaal

IPC: H04L5/00 ,  H04L27/00 ,  H04W24/08 ,  H04W48/08 ,  H04W48/16 ,  H04W56/00 ,  H04W72/04 ,  H04W74/08 ,  H04W84/04 ,  H04W88/02

Abstract: Apparatus and methods for transmitting and discovering timing information during wireless communications are described herein. In an aspect, the systems and methods include monitoring at a user equipment (UE) over an unlicensed radio frequency spectrum band for a discovery signal from a network entity; receiving the discovery signal during a subframe from the network entity; and determining a current subframe location of the network entity based on the discovery signal, wherein the discovery signal includes timing information corresponding to the current subframe location.

公开(公告)号：US10511987B2

公开(公告)日：2019-12-17

申请号：US16005558

申请日：2018-06-11

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W24/10 ,  H04W72/04 ,  H04W4/70 ,  H04L5/00

Abstract: Various features related to eMTC-U deployment are described. In an aspect of the disclosure, an apparatus (e.g., a base station) maybe configured to select a subset of non-anchor channels from a set of available non-anchor channels, where the subset of non-anchor channels may correspond to a bandwidth within an unlicensed band. The apparatus maybe further configured to transmit information indicating the subset of non-anchor channels via an anchor channel. In some configurations, the subset of non-anchor channels maybe selected based on channel measurements performed by the base station or a UE. In one aspect, a UE may receive, from a base station via an anchor channel, information indicating a subset of non-anchor channels selected from a set of available non-anchor channels. The UE may transmit data on one or more non-anchor channels of the subset of non-anchor channels.