-
公开(公告)号：EP0504281B1
公开(公告)日：1998-09-16
申请号：EP91901367.2
申请日：1990-11-30
CPC分类号： G01S19/00 , G01S5/14 , G01S13/46 , G01S13/876 , G01S19/38 , G01S2013/466
-
2.发明授权
公开(公告)号：EP1129529B1
公开(公告)日：2007-01-10
申请号：EP99963873.7
申请日：1999-11-09
IPC分类号： H04B7/185
CPC分类号： H04B7/18534 , H04B7/10
摘要： The information signals are transferred to end users, customers, or service subscribers (116, 118) using at least two signal sources, generally satellites (104, 106), and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers (522) to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.
-
3.发明授权SYSTEM AND METHOD FOR REDUCING CALL DROPPING RATES IN A MULTI-BEAM COMMUNICATION SYSTEM 有权系统和方法用于在多减少通信系统RUFVERLUSTRATEN
公开(公告)号：EP1099315B1
公开(公告)日：2009-03-04
申请号：EP99937339.2
申请日：1999-07-21
发明人： ANTONIO, Franklin, P. , MARSH, Gene, W. , STEWART, Richard, A. , BJEREDE, Marie, M. , CHOCKALINGAM, Ananthanarayanan , KERNS, Arthur, S. , BUTLER, Brian , GROB, Matthew, S. , DETERMAN, James, T. , GROVER, Douglas , SCHIFF, Leonard, N. , AMES, William, G.
CPC分类号： H04B7/18534
摘要： Method for reducing call dropping rates in a multi-beam communication system that includes a user terminal, a gateway, and a plurality of beam sources projecting a plurality of beams, and where a link between the user terminal and the gateway is established on one or more beams. The method relies on a messaging protocol between the gateway and the user. Based on messages sent from the user to the gateway, preferably on a preselected periodic basis, the gateway determines the more desirable beam(s) for transmitting to the user. The messages sent from the user to the gateway contain values representing beam strengths as measured at the user. The gateway uses the user measured beam strengths to select the beams that should be used for the user. The beams to be used are the beams that will decrease the call dropping rates and provide a desired level of beam source diversity.
-
4.发明授权OVERLAYING AN AIR TO GROUND COMMUNICATION SYSTEM ON SPECTRUM ASSIGNED TO SATELLITE SYSTEMS 有权叠加飞机到地面通讯系统，卫星系统的一个范围
公开(公告)号：EP2745430B1
公开(公告)日：2015-06-10
申请号：EP12751699.5
申请日：2012-08-16
IPC分类号： H04B7/185
CPC分类号： H04B7/18508 , H04B7/18502 , H04W16/14 , H04W36/20 , H04W36/30
-
5.发明公开
公开(公告)号：EP1129529A1
公开(公告)日：2001-09-05
申请号：EP99963873.7
申请日：1999-11-09
IPC分类号： H04B7/185
CPC分类号： H04B7/18534 , H04B7/10
摘要： The information signals are transferred to end users, customers, or service subscribers (116, 118) using at least two signal sources, generally satellites (104, 106), and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers (522) to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.
-
6.发明公开OVERLAYING AN AIR TO GROUND COMMUNICATION SYSTEM ON SPECTRUM ASSIGNED TO SATELLITE SYSTEMS 有权叠加飞机到地面通讯系统，卫星系统的一个范围
公开(公告)号：EP2745430A2
公开(公告)日：2014-06-25
申请号：EP12751699.5
申请日：2012-08-16
IPC分类号： H04B7/185
CPC分类号： H04B7/18508 , H04B7/18502 , H04W16/14 , H04W36/20 , H04W36/30
摘要： An air to ground communication system provides internet access to aircraft from ground based stations. The air to ground system shares spectrum with uplink portions of a satellite communication spectrum. Interference mitigation techniques are employed to avoid interference between the ground based communications and satellite communications. Fade mitigation techniques are employed to provide communication to aircraft at low angles of elevation in the presence of rain.
-
7.发明公开SYSTEM AND METHOD FOR REDUCING CALL DROPPING RATES IN A MULTI-BEAM COMMUNICATION SYSTEM 有权系统和方法用于在多减少通信系统RUFVERLUSTRATEN
公开(公告)号：EP1099315A1
公开(公告)日：2001-05-16
申请号：EP99937339.2
申请日：1999-07-21
发明人： ANTONIO, Franklin, P. , MARSH, Gene, W. , STEWART, Richard, A. , BJEREDE, Marie, M. , CHOCKALINGAM, Ananthanarayanan , KERNS, Arthur, S. , BUTLER, Brian , GROB, Matthew, S. , DETERMAN, James, T. , GROVER, Douglas , SCHIFF, Leonard, N. , AMES, William, G.
CPC分类号： H04B7/18534
摘要： Method for reducing call dropping rates in a multi-beam communication system that includes a user terminal, a gateway, and a plurality of beam sources projecting a plurality of beams, and where a link between the user terminal and the gateway is established on one or more beams. The method relies on a messaging protocol between the gateway and the user. Based on messages sent from the user to the gateway, preferably on a preselected periodic basis, the gateway determines the more desirable beam(s) for transmitting to the user. The messages sent from the user to the gateway contain values representing beam strengths as measured at the user. The gateway uses the user measured beam strengths to select the beams that should be used for the user. The beams to be used are the beams that will decrease the call dropping rates and provide a desired level of beam source diversity.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.01 秒)
