公开(公告)号：US11057873B2

公开(公告)日：2021-07-06

申请号：US15423232

申请日：2017-02-02

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Peter Gaal ,  Tao Luo ,  Xiaoxia Zhang ,  Juan Montojo ,  Aleksandar Damnjanovic ,  Marco Papaleo

IPC: H04W72/04 ,  H04L27/00 ,  H04L1/18 ,  H04L5/00 ,  H04W74/08 ,  H04W84/12

Abstract: Apparatus and methods for long term evolution (LTE) licensed-assisted access (LAA) communications at a user equipment (UE) are described herein. In an aspect, an example method includes a user equipment (UE) receiving a radio resource control (RRC) message from an eNB and searching for a discovery reference signal (DRS) associated with a secondary cell (Scell) of the eNB based at least on the information received in the RRC message. The example method further includes transmitting on the channel detected during the search.

公开(公告)号：US20210204232A1

公开(公告)日：2021-07-01

申请号：US17137241

申请日：2020-12-29

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Maarten Menzo Wentink ,  Yisheng Xue ,  Marco Papaleo

IPC: H04W56/00

Abstract: Indication of globally synchronous communications mode is disclosed. A first node may detect an indication signal transmitted by a second node at a synchronization boundary of a shared communication channel. The indication signal is configured to identify a first transmission synchronization mode of the second node. The first node may then adjust its communications configuration in response to the indication signal. In making such adjustments, the first node may either contend for communications on the shared communication channel using the first transmission synchronization mode or refrain from attempting the communications on the shared communication channel using a second transmission synchronization mode.

公开(公告)号：US10986022B2

公开(公告)日：2021-04-20

申请号：US16596690

申请日：2019-10-08

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Gaurav Gupta ,  Shailesh Patil ,  Marco Papaleo

IPC: H04W28/02 ,  H04L12/801 ,  H04L12/26 ,  H04W24/06 ,  H04W52/34 ,  H04W52/36 ,  H04L12/851 ,  H04W72/10 ,  H04W84/04 ,  H04W76/14

Abstract: Improvements may be made for an apparatus performing congestion control considering different technologies, types of radio resources, and priorities of different packets. The apparatus may be a UE. The UE determines a channel busy ratio (CBR). The UE determines one or more channel resource utilization limits based on the CBR, where each channel resource utilization limit of the one or more channel resource utilization limits corresponds to a respective packet priority. The one or more channel resource utilization limits are also a function of a CBR limit. The UE controls transmission of a plurality of packets based on the one or more channel resource utilization limits, and each packet of the plurality of packets has a respective packet priority.

公开(公告)号：US20200305173A1

公开(公告)日：2020-09-24

申请号：US16821442

申请日：2020-03-17

Applicant: QUALCOMM Incorporated

Inventor： Marco Papaleo ,  Xiao Feng Wang ,  Shailesh Patil ,  Maarten Menzo Wentink ,  James Lansford ,  Jamshid Khun-Jush

IPC: H04W72/12 ,  H04W16/14 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device that uses a first radio access technology (RAT) may identify a transmission timing scheme for a shared radio frequency spectrum band, the transmission timing scheme comprising a first set of time intervals allocated for transmissions using a first RAT and a second set of time intervals allocated for transmissions using a second RAT. The wireless device may transmit, during a time interval of the first set of time intervals, a channel reservation signal indicating an end time of the time interval and indicating that the wireless device uses the first RAT. The wireless device may transmit, based at least in part on the transmitted channel reservation signal, over the shared radio frequency spectrum band during at least a portion of the time interval before the end time of the time interval.

公开(公告)号：US20190342029A1

公开(公告)日：2019-11-07

申请号：US16517399

申请日：2019-07-19

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

IPC: H04L1/00 ,  H04W74/08 ,  H04W16/14

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

公开(公告)号：US20180198556A1

公开(公告)日：2018-07-12

申请号：US15913739

申请日：2018-03-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

IPC: H04L1/00 ,  H04W74/08 ,  H04L1/18 ,  H04W16/14 ,  H04W88/06 ,  H04W72/12

CPC classification number: H04L1/0009 ,  H04L1/1812 ,  H04W16/14 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/06

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

公开(公告)号：US20160234835A1

公开(公告)日：2016-08-11

申请号：US15019767

申请日：2016-02-09

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

IPC: H04W72/04 ,  H04L1/00 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04L1/0009 ,  H04L1/1812 ,  H04W16/14 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/06

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

Abstract translation: 技术描述为无线通信。 第一种方法包括感测占用共享射频频带的第一无线电接入技术（RAT）通信的指示; 以及响应于所述感测，配置设备使用的第二RAT的至少一个参数来竞争接入所述频带。 第二种方法包括从在下限和上限之间延伸的数字范围中随机选择一个数字; 竞争通过在多个CCA时隙上执行扩展清除信道评估（ECCA）过程来访问共享射频频带，所述多个CCA时隙包括等于上限的第一数量的CCA时隙; 并且在执行ECCA过程之后确定该频带可用于与随机选择的数字相等的第二数量的CCA时隙可用于获得对该频带的访问的争用。