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公开(公告)号：EP1319275A1
公开(公告)日：2003-06-18
申请号：EP01961571.5
申请日：2001-08-30
发明人： DAM, Henrik , BERG, Magnus
IPC分类号： H04B7/02
CPC分类号： H04B7/0408
摘要： The present invention provides a solution to the problem concerning how to associate uplink packet data to the originating mobile station in order to be able to direct downlink packet data transmissions to the correct mobile station when using adaptive antennas. A packet scheduler signals the uplink and downlink scheduling information to a direction of arrival (DOA) estimating- or beam selection algorithm, and specifies a DOA- or beam selection algorithm for every mobile station instead of for every timeslot. The received information, i.e. the angular and/or spatial samples of signal strength and signal quality etc. is stored in a physical context memory. It is possible to use adaptive antennas in a system carrying e.g. GPRS/EGPRS traffic.
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公开(公告)号：EP1224747A1
公开(公告)日：2002-07-24
申请号：EP00984941.5
申请日：2000-10-10
发明人： DAM, Henrik , BERG, Magnus
CPC分类号： H04L1/1819 , H04B7/0408
摘要： The present invention relates to methods for performing uplink scheduling of packet data when using adaptive antennas. In the solution according to the invention the uplink scheduling information is transmitted in an antenna beam towards the mobile for which the scheduling information is intended and by allocating mobile stations with similar position to the same packet data channel. All other data packets are transmitted in an antenna beam towards the mobile station for which the data are intended. By adopting the proposed solution it is possible to efficiently use adaptive antennas in a system carrying e.g. GPRS/EGPRS traffic. The carrier to interference gain introduced by adaptive antennas produces a pronounced increase in system performance.
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公开(公告)号：EP1169875A1
公开(公告)日：2002-01-09
申请号：EP00925802.1
申请日：2000-04-07
发明人： ANDERSSON, Sören , DAM, Henrik , BERG, Magnus , FRERICH, Marc , AHRENS, Felix , BORMANN, Rainer
IPC分类号： H04Q7/36
CPC分类号： H04W16/28 , H01Q3/2605 , H04B7/0617 , H04W16/06 , H04W16/24 , H04W48/12
摘要： The present invention relates generally to the problems associated with sectorization of cells in cellular communications systems, and more particularly to interference between sectors. The invention provides the possibility of flexibly distributing hardware between sectors in a cell by allowing one transmitter to be shared by all the sectors. Since a beacon signal must be transmitted to each sector in a cell, it can be combined with the signal from the transmitter before being transmitted from an antenna. Thus it is necessary to only deploy one carrier for the beacon. Interference reduction in sectored sites is also improved. In addition, different antenna patterns may be combined to provide the site with all kinds of coverage patterns. Downlink diversity is furthermore attainable by having overlapping uncorrelated antenna patterns.
摘要翻译： 本发明总体上涉及与蜂窝通信系统中的小区扇区化有关的问题，并且更具体地涉及扇区之间的干扰。 本发明通过允许一个发射机被所有扇区共享，提供了在小区中扇区之间灵活分配硬件的可能性。 由于必须将信标信号发送到小区中的每个扇区，所以它可以在从天线发送之前与来自发射机的信号组合。 因此有必要仅为信标部署一个载波。 扇形网站的干扰减少也得到改善。 另外，可以组合不同的天线方向图以向该站点提供各种覆盖模式。 下行链路分集还可以通过具有重叠的不相关天线方向图来实现。
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公开(公告)号：EP1169875B1
公开(公告)日：2011-11-09
申请号：EP00925802.1
申请日：2000-04-07
发明人： ANDERSSON, Sören , DAM, Henrik , BERG, Magnus , FRERICH, Marc , AHRENS, Felix , BORMANN, Rainer
CPC分类号： H04W16/28 , H01Q3/2605 , H04B7/0617 , H04W16/06 , H04W16/24 , H04W48/12
摘要： The present invention relates generally to the problems associated with sectorization of cells in cellular communications systems, and more particularly to interference between sectors. The invention provides the possibility of flexibly distributing hardware between sectors in a cell by allowing one transmitter to be shared by all the sectors. Since a beacon signal must be transmitted to each sector in a cell, it can be combined with the signal from the transmitter before being transmitted from an antenna. Thus it is necessary to only deploy one carrier for the beacon. Interference reduction in sectored sites is also improved. In addition, different antenna patterns may be combined to provide the site with all kinds of coverage patterns. Downlink diversity is furthermore attainable by having overlapping uncorrelated antenna patterns.
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