公开(公告)号：US09615344B2

公开(公告)日：2017-04-04

申请号：US14265123

申请日：2014-04-29

Applicant: QUALCOMM Incorporated

Inventor： Ruoheng Liu ,  June Namgoong ,  Hai Le ,  Srikant Jayaraman ,  Sunil Kamavaram ,  Rajakumar Ebenezar Devairakkam ,  Venkatraman Rajagopalan

IPC: H04W56/00 ,  H04W74/08 ,  H04B7/185 ,  H04W74/00

CPC classification number: H04W56/004 ,  H04B7/18506 ,  H04W74/002 ,  H04W74/004 ,  H04W74/0833

Abstract: 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.

公开(公告)号：US20150181544A1

公开(公告)日：2015-06-25

申请号：US14265123

申请日：2014-04-29

Applicant: QUALCOMM Incorporated

Inventor： Ruoheng Liu ,  June Namgoong ,  Hai Le ,  Srikant Jayaraman ,  Sunil Kamavaram ,  Rajakumar Ebenezar Devairakkam ,  Venkatraman Rajagopalan

IPC: H04W56/00 ,  H04W74/08

CPC classification number: H04W56/004 ,  H04B7/18506 ,  H04W74/002 ,  H04W74/004 ,  H04W74/0833

Abstract: 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.

Abstract translation: 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。