公开(公告)号：EP3420746A1

公开(公告)日：2019-01-02

申请号：EP17710645.7

申请日：2017-02-25

Applicant: QUALCOMM Incorporated

Inventor： RADULESCU, Andrei ,  PATEL, Chirag ,  LUO, Tao ,  CHENDAMARAI KANNAN, Arumugam

IPC: H04W24/10 ,  H04W48/00 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may monitor a neighbor cell and report the result to a serving base station. Based on the report, the serving base station may identify an estimated discovery reference signal (DRS) transmission window of the neighbor cell. In some cases, the UE may estimate and report parameters of the neighbor DRS transmission window, and in other cases, the UE may make a measurement report and the base station may infer DRS transmission window parameters. The base station may then provide the UE with a DRS measurement timing configuration (DMTC) based on the estimated parameters of the neighbor cell so that the UE may monitor the neighbor cell and the serving cell in an efficient manner. For example, the UE may conserve battery life by refraining from monitoring DRS during periods when a DRS transmission is not likely.

公开(公告)号：EP3412078A1

公开(公告)日：2018-12-12

申请号：EP17704149.8

申请日：2017-01-27

Applicant: QUALCOMM Incorporated

Inventor： RADULESCU, Andrei ,  LUO, Tao ,  PATEL, Chirag

IPC: H04W56/00

Abstract: Certain aspects of the present disclosure relate to a methods and apparatus for wireless communication. In one aspect, a method of wireless communication comprises receiving, by a long term evolution unlicensed (LTE-U) device, a plurality of signals from an access point on an unlicensed communication spectrum. The method further comprises determining, by the device, whether a signal of the plurality of signals comprises a discovery signal. The method further comprises monitoring a radio link based on, the signal if the signal is determined to comprise the discovery signal.

公开(公告)号：EP3403360A1

公开(公告)日：2018-11-21

申请号：EP17703512.8

申请日：2017-01-13

Applicant: Qualcomm Incorporated

Inventor： CHENDAMARAI KANNAN, Arumugam ,  LUO, Tao ,  PATEL, Chirag ,  KADOUS, Tamer

IPC: H04L5/00 ,  H04L5/14

CPC classification number: H04W72/0406 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/1469 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a control message during a special subframe of a radio frame. The UE may determine a payload size of the control message according to a radio resource configuration, or the UE may determine a payload size based on a number of bits associated with information to be sent in the control message. The UE may identify uplink resources of the special subframe to use for the control message based on explicit signaling or implicitly based on information to be sent in the control message. Designated resources for control message transmissions in a special subframe may remain the same or may change in subsequent transmission opportunities. The UE may determine to use the same or different resources of a special subframe in a subsequent transmission opportunity depending on when the UE receives downlink messages.

公开(公告)号：EP3446529B1

公开(公告)日：2020-09-30

申请号：EP17721275.0

申请日：2017-04-21

Applicant: Qualcomm Incorporated

Inventor： CHENDAMARAI KANNAN, Arumugam ,  PATEL, Chirag ,  LUO, Tao ,  KADOUS, Tamer

IPC: H04L5/00

公开(公告)号：EP3469826B1

公开(公告)日：2020-06-03

申请号：EP17730016.7

申请日：2017-06-02

Applicant: QUALCOMM Incorporated

Inventor： SINGH, Damanjit ,  PATEL, Chirag ,  SHARMA, Manu ,  PRAKASH, Rajat

IPC: H04W24/02

公开(公告)号：EP3412078B1

公开(公告)日：2020-03-04

申请号：EP17704149.8

申请日：2017-01-27

Applicant: QUALCOMM Incorporated

Inventor： RADULESCU, Andrei ,  LUO, Tao ,  PATEL, Chirag

IPC: H04W76/38 ,  H04W56/00

公开(公告)号：EP3552445A1

公开(公告)日：2019-10-16

申请号：EP16923590.0

申请日：2016-12-07

Applicant: QUALCOMM Incorporated

Inventor： CHENG, Peng ,  PATEL, Chirag ,  CHANDE, Vinay ,  KADOUS, Tamer

IPC: H04W72/04

公开(公告)号：EP3536108A1

公开(公告)日：2019-09-11

申请号：EP17801542.6

申请日：2017-10-27

Applicant: Qualcomm Incorporated

Inventor： YERRAMALLI, Srinivas ,  KADOUS, Tamer ,  LIU, Chih-Hao ,  PATEL, Chirag ,  RICO ALVARINO, Alberto

IPC: H04W74/08

公开(公告)号：EP3412053A1

公开(公告)日：2018-12-12

申请号：EP17702492.4

申请日：2017-01-18

Applicant: Qualcomm Incorporated

Inventor： RADULESCU, Andrei ,  LUO, Tao ,  PATEL, Chirag

IPC: H04W16/14 ,  H04W68/00

Abstract: Certain aspects of the present disclosure relate to a methods and apparatus for wireless communication. In one aspect, a method of wireless communication comprises assigning, by an access point, an interval of time for transmission on an unlicensed communication spectrum to a LTE-U device, and broadcasting an anchor signal during the interval of time on the unlicensed communication spectrum, the anchor signal comprising a paging indication for the LTE-U device. In another aspect, a method of wireless communication comprises determining, by a LTE-U device, an interval of time for reception of a paging indication on an unlicensed communication spectrum and receiving an anchor signal during the interval of time on the unlicensed communication spectrum, the anchor signal comprising the paging indication.

公开(公告)号：EP3403458A1

公开(公告)日：2018-11-21

申请号：EP17703825.4

申请日：2017-01-12

Applicant: Qualcomm Incorporated

Inventor： CHENDAMARAI KANNAN, Arumugam ,  LUO, Tao ,  PATEL, Chirag ,  YERRAMALLI, Srinivas ,  KADOUS, Tamer

IPC: H04W74/00

Abstract: Techniques for performing listen before talk (LBT) channel contention procedures in a shared radio frequency spectrum band are provided. The LBT techniques may include a shortened LBT procedure that may be selected if a base station has reserved a shared channel for a duration of expected user equipment (UE) uplink transmissions, and a full LBT procedure that may be selected if the base station has not reserved the channel for the duration of expected UE uplink transmissions. The shortened LBT procedure may include detecting energy levels of the channel for a relatively short time period relative to the full LBT procedure. The shortened LBT procedure may be selected if a time period between a UE receiving a grant of uplink resources and the beginning of the uplink resources is less than a threshold time value.