专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09648504B2 Using subarrays of a beamformer for transmissions in a forward link 有权
公开(公告)号：US09648504B2
公开(公告)日：2017-05-09
申请号：US14101919
申请日：2013-12-10
申请人： QUALCOMM Incorporated
发明人： June Namgoong , Srikant Jayaraman , Ruoheng Liu
IPC分类号： H04W16/28 , H04B7/06 , H04W88/08
CPC分类号： H04W16/28 , H04B7/06 , H04B7/0617 , H04B7/068 , H04B7/0691 , H04B7/0695 , H04W88/08
摘要： Methods, systems, and devices are described for transmitting across a broad azimuth using an antenna array. In one example, a method is described that includes forming two subarrays from an antenna array. Beamforming weights are selected for each subarray to cause the radiation patterns to be complementary over a range of the azimuth of a cell. The beamforming weights may be selected according to a recursive relation based on the number of antenna elements in each subarray. Information may be encoded, scrambled, and mapped to modulation symbols. A Space Frequency Block Code (SFBC) such as an Alamouti Code may then be used to form two signals to be transmitted over the two subarrays.

2. 发明授权

US09698962B2 Timing advance techniques for large cells 有权
公开(公告)号：US09698962B2
公开(公告)日：2017-07-04
申请号：US14705296
申请日：2015-05-06
申请人： QUALCOMM Incorporated
发明人： Venkatraman Rajagopalan , Srikant Jayaraman , Ruoheng Liu , Rajakumar Ebenezar Devairakkam
IPC分类号： H04L5/14 , H04W72/04 , H04W72/12 , H04B7/185 , H04W56/00
CPC分类号： H04L5/14 , H04B7/18506 , H04L5/1469 , H04W56/004 , H04W72/0413 , H04W72/0446 , H04W72/12
摘要： Methods, systems, and devices are described for implementing timing advances in which a propagation delay may exceed a time period of a portion of a radio frame. In some examples, a transmitter may identify a timing advance indicating a time to initiate wireless uplink transmission of a subframe. Such a timing advance may compensate for a propagation delay between the transmitter and a receiver of the wireless uplink transmission. The timing advance may be applied as an integer component and a fractional component in relation to a duration of the subframe, to adjust the time to initiate the wireless uplink transmission of the subframe. The integer component may be used to adjust one or more subframe characteristics, and the fractional component that may be used to adjust the time to initiate the wireless uplink transmission of the subframe.

3. 发明授权

US11041959B2 Ephemeris information management for satellite communication 有权
公开(公告)号：US11041959B2
公开(公告)日：2021-06-22
申请号：US16069829
申请日：2016-06-30
申请人： QUALCOMM Incorporated
发明人： Kundan Kumar Lucky , Gene Wesley Marsh , Srikant Jayaraman , William Ames , Dan Vassilovski , Fatih Ulupinar , Rohit Kapoor
IPC分类号： G01S19/05 , G01S19/27 , G01S19/08 , G01S19/28
摘要： Various aspects of the disclosure relate to managing ephemeris information. Provisions are made for providing ephemeris information to a user terminal (UT). Messages are defined for sending ephemeris information and for requesting ephemeris information. Ephemeris information for a subset of the satellites in a constellation may be sent to a UT to reduce signaling load. A UT may manage a database of ephemeris information to ensure freshness of the ephemeris information.

4. 发明授权

US10667143B2 Air-to-ground (ATG) uplink subband beamformer with combinable subbands 有权
公开(公告)号：US10667143B2
公开(公告)日：2020-05-26
申请号：US15186407
申请日：2016-06-17
申请人： QUALCOMM Incorporated
发明人： Chih-Hao Liu , June Namgoong , Srikant Jayaraman
IPC分类号： H04W16/28 , H04B7/185 , H04W72/04
摘要： Aspects of the present disclosure generally relate to techniques and apparatus that may help improve greatly reduce the implementation complexity of the ground station, and ground base-station user capacity by utilizing a subband beamformer for processing uplink signals received from aircraft at ground base stations, in an air-to-ground (ATG) system. The techniques presented herein may allow for dynamic subband allocation to different airborne devices with multi-user beamforming and subband combining.

5. 发明授权

US09826448B2 Handover management in air-to-ground wireless communication 有权
公开(公告)号：US09826448B2
公开(公告)日：2017-11-21
申请号：US14329437
申请日：2014-07-11
申请人： QUALCOMM Incorporated
发明人： Hai Truong Le , Kalyan Kuppuswamy , Srikant Jayaraman , Rajakumar Ebenezar Devairakkam , Ebenezer Pugalenthi Samuel , Ruoheng Liu , Sunil Kumar Kamavaram , Chanakya Malladi
IPC分类号： H04W36/00 , H04W36/08
CPC分类号： H04W36/08 , H04B7/18506 , H04W36/0083
摘要： Managing handover procedures of two or more modems from a serving base station to a target base station includes receiving at least one message indicative of at least one measurement report of radio conditions from at least one modem of the two or more modems; determining, based on the at least one message, whether to handover the two or more modems from the serving base station to the target base station; and upon determining to handover the two or more modems from the serving base station to the target base station, indicating to each of the two or more modems to send to the serving base station a measurement report configured to trigger a respective handover procedure from the serving base station to the target base station.

6. 发明申请

US20150085840A1 TIME DIVISION LONG TERM EVOLUTION (TD-LTE) FRAME STRUCTURE 审中-公开
标题翻译：时间段长期演进（TD-LTE）框架结构
公开(公告)号：US20150085840A1
公开(公告)日：2015-03-26
申请号：US14461241
申请日：2014-08-15
申请人： QUALCOMM Incorporated
发明人： Ruoheng Liu , June Namgoong , Venkatraman Rajagopalan , Srikant Jayaraman
IPC分类号： H04L5/00 , H04J3/02
摘要： A method of wireless communication includes communicating with a base station using a special subframe that extends a guard period over an uplink pilot time slot and one or more disabled, adjacent uplink subframes. The method also includes associating a control information subframe with a specific downlink subframe while accounting for both cell radius extension and loss of the one or more disabled, adjacent uplink subframes used to communicate the extended special subframe.
摘要翻译：无线通信的方法包括使用在上行链路导频时隙和一个或多个禁用的相邻上行链路子帧上延长保护周期的特殊子帧与基站进行通信。该方法还包括将控制信息子帧与特定下行链路子帧相关联，同时考虑用于传送扩展专用子帧的一个或多个禁用的相邻上行链路子帧的小区半径扩展和丢失。

7. 发明申请

US20150085834A1 TIME DIVISION LONG TERM EVOLUTION (TD-LTE) FRAME STRUCTURE MODIFICATION 审中-公开
标题翻译：时间段长期演进（TD-LTE）框架结构修改
公开(公告)号：US20150085834A1
公开(公告)日：2015-03-26
申请号：US14105106
申请日：2013-12-12
申请人： QUALCOMM Incorporated
发明人： Ruoheng Liu , June Namgoong , Venkatraman Rajagopalan , Srikant Jayaraman
IPC分类号： H04W72/04
摘要： A method of wireless communication includes communicating with a base station using an extended special subframe. Communicating with the base station using the extended special subframe may be performed by disabling an uplink pilot time slot and an adjacent uplink subframe.
摘要翻译：一种无线通信方法包括使用扩展特殊子帧与基站进行通信。使用扩展特殊子帧与基站通信可以通过禁止上行链路导频时隙和相邻的上行链路子帧来执行。

8. 发明授权

US09615344B2 Enhanced random access procedure for air-to-ground communications 有权
公开(公告)号：US09615344B2
公开(公告)日：2017-04-04
申请号：US14265123
申请日：2014-04-29
申请人： QUALCOMM Incorporated
发明人： Ruoheng Liu , June Namgoong , Hai Le , Srikant Jayaraman , Sunil Kamavaram , Rajakumar Ebenezar Devairakkam , Venkatraman Rajagopalan
IPC分类号： H04W56/00 , H04W74/08 , H04B7/185 , H04W74/00
CPC分类号： H04W56/004 , H04B7/18506 , H04W74/002 , H04W74/004 , H04W74/0833
摘要： Methods, systems, and devices are described for establishing a wireless communications link at an aircraft terminal (AT). An AT may determine a timing offset based on the propagation delay between the AT and a ground station, which in some cases may be more than 100 kilometers away. The AT may then transmit an initial access message to the ground station based on the determined timing offset. In some embodiments, the AT may receive an access response message from the ground station that includes a timing alignment value and adjust the timing offset based on this value. The AT may transmit a connection message to the ground station that includes AT location information. This information may be used by the ground station to facilitate beamforming.

9. 发明申请

US20150334707A1 TIMING ADVANCE TECHNIQUES FOR LARGE CELLS 有权
标题翻译：大型细胞的时序预测技术
公开(公告)号：US20150334707A1
公开(公告)日：2015-11-19
申请号：US14705296
申请日：2015-05-06
申请人： QUALCOMM Incorporated
发明人： Venkatraman Rajagopalan , Srikant Jayaraman , Ruoheng Liu , Rajakumar Ebenezar Devairakkam
IPC分类号： H04W72/04 , H04L5/14
CPC分类号： H04L5/14 , H04B7/18506 , H04L5/1469 , H04W56/004 , H04W72/0413 , H04W72/0446 , H04W72/12
摘要： Methods, systems, and devices are described for implementing timing advances in which a propagation delay may exceed a time period of a portion of a radio frame. In some examples, a transmitter may identify a timing advance indicating a time to initiate wireless uplink transmission of a subframe. Such a timing advance may compensate for a propagation delay between the transmitter and a receiver of the wireless uplink transmission. The timing advance may be applied as an integer component and a fractional component in relation to a duration of the subframe, to adjust the time to initiate the wireless uplink transmission of the subframe. The integer component may be used to adjust one or more subframe characteristics, and the fractional component that may be used to adjust the time to initiate the wireless uplink transmission of the subframe.
摘要翻译：描述了用于实现传播延迟可能超过无线电帧的一部分的时间段的定时进展的方法，系统和设备。在一些示例中，发射机可以识别指示发起子帧的无线上行链路传输的时间的定时提前。这样的定时提前可以补偿无线上行链路传输的发射机和接收机之间的传播延迟。定时提前可以作为与子帧的持续时间有关的整数分量和小数分量来应用，以调整发起子帧的无线上行链路传输的时间。整数分量可以用于调整一个或多个子帧特性，以及可用于调整发起子帧的无线上行链路传输的时间的分数分量。

10. 发明申请

US20150181544A1 ENHANCED RANDOM ACCESS PROCEDURE FOR AIR-TO-GROUND COMMUNICATIONS 有权
标题翻译：加强空中接地通信的随机访问程序
公开(公告)号：US20150181544A1
公开(公告)日：2015-06-25
申请号：US14265123
申请日：2014-04-29
申请人： QUALCOMM Incorporated
发明人： Ruoheng Liu , June Namgoong , Hai Le , Srikant Jayaraman , Sunil Kamavaram , Rajakumar Ebenezar Devairakkam , Venkatraman Rajagopalan
IPC分类号： H04W56/00 , H04W74/08
CPC分类号： H04W56/004 , H04B7/18506 , H04W74/002 , H04W74/004 , H04W74/0833
摘要： Methods, systems, and devices are described for establishing a wireless communications link at an aircraft terminal (AT). An AT may determine a timing offset based on the propagation delay between the AT and a ground station, which in some cases may be more than 100 kilometers away. The AT may then transmit an initial access message to the ground station based on the determined timing offset. In some embodiments, the AT may receive an access response message from the ground station that includes a timing alignment value and adjust the timing offset based on this value. The AT may transmit a connection message to the ground station that includes AT location information. This information may be used by the ground station to facilitate beamforming.
摘要翻译：描述了用于在飞行器终端（AT）建立无线通信链路的方法，系统和设备。 AT可以基于AT和地面站之间的传播延迟来确定定时偏移，在某些情况下，这可能超过100公里。然后，AT可以基于所确定的定时偏移将初始接入消息发送到地面站。在一些实施例中，AT可以从地面站接收包括定时对准值的访问响应消息，并且基于该值调整定时偏移。 AT可以向包括AT位置信息的地面站发送连接消息。该信息可以由地面站使用以促进波束成形。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式