公开(公告)号：US10225859B2

公开(公告)日：2019-03-05

申请号：US15153656

申请日：2016-05-12

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Aleksandar Damnjanovic ,  Tao Luo ,  Wanshi Chen ,  Peter Gaal

IPC: H04W72/00 ,  H04W72/14 ,  H04W72/12 ,  H04W74/00 ,  H04L1/18 ,  H04W74/04 ,  H04W16/14

Abstract: Techniques for uplink transmission management in a wireless communications system are described herein. An example method may include receiving an explicit uplink grant that indicates one or more implicit uplink grants. In an aspect, the example method may include performing a first clear channel assessment (CCA) in response to the explicit uplink grant in a first time slot. In another aspect, the example method may include, if the first CCA fails, sequentially performing one or more additional CCAs respectively in one or more time slots subsequent to the first time slot in response to the one or more implicit uplink grants, and transmitting the PDU over the unlicensed or shared spectrum and in a time slot subsequent to the time slot in which one of the one or more additional CCAs succeeds.

公开(公告)号：US20190045420A1

公开(公告)日：2019-02-07

申请号：US16154349

申请日：2018-10-08

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal

IPC: H04W36/36 ,  H04W48/20 ,  H04H20/38 ,  H04L5/00 ,  H04W36/00 ,  H04W72/04 ,  H04W72/08 ,  H04W4/70

Abstract: Cell selection techniques are provided for network access to cells that may employ one or more coverage enhancement techniques. A user equipment (UE), which may be a machine type communication (MTC) device, upon initial acquisition or upon wakeup may measure a reference signal received power (RSRP), reference signal received quality (RSRQ), or both, and determine a cell selection value based at least in part on the RSRP, RSRQ, or a combination thereof. The cell selection value may be determined based on an offset, which may be selected based on a measurement accuracy capability of the UE. UE sequential access attempts, neighbor cell list information that may include coverage enhancement of neighboring cells transmissions, and cell re-selection measurement frequency adjustments are also described.

公开(公告)号：US20190007948A1

公开(公告)日：2019-01-03

申请号：US16126139

申请日：2018-09-10

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Jelena Damnjanovic ,  Peter Gaal

IPC: H04W72/04 ,  H04W52/34 ,  H04W52/14 ,  H04W52/36

Abstract: Techniques for wireless communication are described, which may include establishing a connection, by a user equipment (UE), with a first and second evolved NodeB (eNB), wherein each of the eNBs provide radio resources to the UE for respective uplink communications; receiving from the first eNB, at the UE, an indication including an allocation of uplink transmit power between the first eNB and at least the second eNB; and transmitting the uplink communications from the UE to the first and second eNBs based on the indication. The techniques may further include coordinating, by a first eNB, multi-connectivity communication for a UE with at least the first eNB and a second eNB; determining for the UE, at the eNB, an allocation of uplink transmit power between the first eNB and at least the second eNB; and transmitting an indication including the allocation of uplink transmit power allocation from the first eNB to the UE.

公开(公告)号：US10149197B2

公开(公告)日：2018-12-04

申请号：US15811930

申请日：2017-11-14

Applicant: QUALCOMM Incorporated

Inventor： Miguel Griot ,  Hao Xu ,  Madhavan Srinivasan Vajapeyam

IPC: H04W12/06 ,  H04W28/02 ,  H04W12/04 ,  H04W76/12 ,  H04L29/06 ,  H04W68/02 ,  H04W4/70 ,  H04W12/02

Abstract: Certain aspects of the present disclosure generally relate to techniques for secure connectionless uplink transmissions by a wireless device. Such techniques may provide for negotiation of an encryption mechanism as part of the setup for connectionless transmissions and subsequent secure connectionless uplink transmissions.

公开(公告)号：US10148392B2

公开(公告)日：2018-12-04

申请号：US15002072

申请日：2016-01-20

Applicant: QUALCOMM Incorporated

Inventor： Onkar Jayant Dabeer ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Wanshi Chen ,  Alberto Rico Alvarino

IPC: H04L1/16 ,  H04L12/26 ,  H04L1/00 ,  H04L1/12

Abstract: According to the present disclosure, CSI and/or a plurality of ACKs related to a group of DL data transmissions may be buffered at the UE as a GACK until a DCI trigger is received from the eNB. Once the trigger is received, the UE may transmit the CSI and/or GACK to the eNB. In this way HARQ feedback and/or CSI may be reliably communicated while reducing payload. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus send, to a UE, data transmissions associated with a first plurality of downlink subframes. In an aspect, the apparatus increments a counter for each data transmission sent to the UE. In a further aspect, the apparatus transmits, to the UE, a first trigger for a first GACK when a counter is greater than or equal to a threshold.

公开(公告)号：US10123301B2

公开(公告)日：2018-11-06

申请号：US15708030

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04W68/00 ,  H04W72/04 ,  H04W72/12 ,  H04W68/02 ,  H04W16/14 ,  H04W74/08

Abstract: Techniques are described for wireless communication. A first method includes receiving a transmission including a paging group indicator and an indication of a time window. The transmission may be received at a user equipment (UE) over an unlicensed radio frequency spectrum band. The first method may also include monitoring, based on the paging group indicator, the unlicensed radio frequency spectrum band during the time window to receive an asynchronous paging message from a base station. A second method includes transmitting the transmission over the unlicensed radio frequency spectrum band; performing a number of clear channel assessments (CCAs) on the unlicensed radio frequency spectrum band during the time window; and transmitting the paging message over the unlicensed radio frequency spectrum band at a transmission time during the time window. The transmission time may be based on a result of at least one of the CCAs.

公开(公告)号：US10117152B2

公开(公告)日：2018-10-30

申请号：US15148818

申请日：2016-05-06

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal

IPC: H04W36/36 ,  H04W4/70 ,  H04W48/20 ,  H04H20/38 ,  H04L5/00 ,  H04W4/00 ,  H04W36/00 ,  H04W72/04 ,  H04W72/08

Abstract: Cell selection techniques are provided for network access to cells that may employ one or more coverage enhancement techniques. A user equipment (UE), which may be a machine type communication (MTC) device, upon initial acquisition or upon wakeup may measure a reference signal received power (RSRP), reference signal received quality (RSRQ), or both, and determine a cell selection value based at least in part on the RSRP, RSRQ, or a combination thereof. The cell selection value may be determined based on an offset, which may be selected based on a measurement accuracy capability of the UE. UE sequential access attempts, neighbor cell list information that may include coverage enhancement of neighboring cells transmissions, and cell re-selection measurement frequency adjustments are also described.

公开(公告)号：US10085300B2

公开(公告)日：2018-09-25

申请号：US15040702

申请日：2016-02-10

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Miguel Griot ,  Peter Gaal ,  Masato Kitazoe ,  Wanshi Chen ,  Yongbin Wei

IPC: H04W76/28 ,  H04W24/08 ,  H04W4/70

CPC classification number: H04W76/28 ,  H04W4/70 ,  H04W24/08 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/24

Abstract: Methods, systems, and devices for wireless communication are described. Wireless devices may operate in an extended connected discontinuous reception (eDRX) mode to increase energy efficiency and extend battery life. Control signaling may be used to initiate or support the extended sleep cycles associated with eDRX operation. In some cases, a system frame number (SFN) extension may be implemented to record frame cycles and differentiate SFNs that occur in a first frame cycle from SFNs that occur in a second frame cycle. Control techniques to support eDRX operation and maintain network synchronicity and compatibility may also be employed. In some examples, a wireless system may broadcast extended or dedicated system information updates to an eDRX capable device or devices. In some cases, devices may adjust the rate at which radio link monitoring (RLM) measurements are taken to timely determine radio link failures (RLFs) in conjunction with eDRX operation.

公开(公告)号：US10085265B2

公开(公告)日：2018-09-25

申请号：US14607348

申请日：2015-01-28

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Jelena Damnjanovic ,  Peter Gaal

IPC: H04W4/00 ,  H04W72/04 ,  H04W52/14 ,  H04W52/34 ,  H04W52/36

CPC classification number: H04W72/0473 ,  H04W52/146 ,  H04W52/346 ,  H04W52/365 ,  H04W52/367

Abstract: Techniques for wireless communication are described, which may include establishing a connection, by a user equipment (UE), with a first and second evolved NodeB (eNB), wherein each of the eNBs provide radio resources to the UE for respective uplink communications; receiving from the first eNB, at the UE, an indication including an allocation of uplink transmit power between the first eNB and at least the second eNB; and transmitting the uplink communications from the UE to the first and second eNBs based on the indication. The techniques may further include coordinating, by a first eNB, multi-connectivity communication for a UE with at least the first eNB and a second eNB; determining for the UE, at the eNB, an allocation of uplink transmit power between the first eNB and at least the second eNB; and transmitting an indication including the allocation of uplink transmit power allocation from the first eNB to the UE.

公开(公告)号：US10045394B2

公开(公告)日：2018-08-07

申请号：US15077855

申请日：2016-03-22

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Miguel Griot ,  Masato Kitazoe

IPC: H04W76/28 ,  H04W68/00 ,  H04W72/04 ,  H04W72/00 ,  H04W56/00 ,  H04W72/08

Abstract: Aspects of the present disclosure provide techniques that may be used wireless network communication devices to support devices operating with extended discontinuous reception (eDRX). An exemplary method, performed by a BS, generally includes determining at least one paging hyper-frame for paging a user equipment (UE) based on an identification (ID) of the UE, the paging hyper-frame determined from a set of periodically occurring hyper-frames that each span a number of radio frames, receiving a request to page the UE, and transmitting a paging signal to the UE in at least one subframe within a radio frame of the paging hyper-frame. Another exemplary method, performed by a UE, generally includes determining at least one paging hyper-frame for monitoring for a paging signal from a base station (BS) based on an identification (ID) of the UE, the paging hyper-frame determined from a set of periodically occurring hyper-frames that each span a number of radio frames, and monitoring for the paging signal in at least one subframe within a radio frame of the paging hyper-frame.