公开(公告)号：EP2342911B1

公开(公告)日：2012-10-03

申请号：EP08803343.6

申请日：2008-08-28

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： ASPLUND, Henrik ,  HAGERMAN, Bo ,  SIMONSSON, Arne

IPC分类号： H04W16/24

CPC分类号： H04B7/10 ,  H01Q1/246 ,  H01Q21/205 ,  H04B7/0491

公开(公告)号：EP2364571A1

公开(公告)日：2011-09-14

申请号：EP08813612.2

申请日：2008-10-02

申请人： Telefonaktiebolaget L M Ericsson (PUBL)

发明人： KRONESTEDT, Fredric ,  HAGERMAN, Bo ,  HILTUNEN, Kimmo

IPC分类号： H04W72/08

CPC分类号： H04W72/082 ,  H04B7/0608 ,  H04B7/0805 ,  H04W36/0088 ,  H04W72/0413

摘要： The present invention relates to a wireless communication system. The wireless communication system comprises an antenna unit (425) comprising a plurality of antenna elements, selecting means (411) arranged to select at least one of the antenna elements as serving antenna for communication with user equipment, means for code allocation (412) arranged to allocate a code for channel estimation support for the communication between the serving antenna and the user equipment, and a control unit (426) arranged to control the communication based on the selected serving antenna and the allocated code. The means for code allocation are arranged to assign the code to said user equipment. The control unit is arranged to control the serving antenna so as to transmit the code assigned to the user equipment.

公开(公告)号：EP2351243A1

公开(公告)日：2011-08-03

申请号：EP09749186.4

申请日：2009-10-26

申请人： Telefonaktiebolaget L M Ericsson (publ)

发明人： MOLNAR, Kari ,  HAGERMAN, Bo

IPC分类号： H04B7/04 ,  H01Q3/00 ,  H04W16/28

CPC分类号： H04B7/0408 ,  H01Q1/246 ,  H01Q3/26 ,  H04B7/0632 ,  H04W16/28 ,  H04W72/046

摘要： A base station and method are described herein that improves the coverage in a fixed-beam wireless communication system by using antenna beam-jitter and Channel Quality Information (CQI) correction. In one embodiment, the method includes the steps of: (a) modifying a beam by introducing a beam-jitter in a beam-forming pattern; (b) receiving an estimated channel quality information, CQI, from a user terminal; (c) accounting for effects of the beam-jitter on the estimated CQI to obtain a jitter-adjusted CQI estimate; (d) and using the jitter-adjusted CQI estimate during user scheduling for a future transmission to the user terminal.

摘要翻译： 这里描述的基站和方法通过使用天线波束抖动和信道质量信息（CQI）校正来改善固定波束无线通信系统中的覆盖范围。 在一个实施例中，该方法包括以下步骤：（a）通过在波束形成图案中引入波束抖动来修改波束; （b）从用户终端接收估计的信道质量信息CQI; （c）考虑波束抖动对估计的CQI的影响，以获得抖动调整后的CQI估计; （d）并且在用户调度期间使用所述抖动调整后的CQI估计用于将来传输给所述用户终端。

公开(公告)号：EP2286522A1

公开(公告)日：2011-02-23

申请号：EP08760952.5

申请日：2008-06-12

申请人： Telefonaktiebolaget L M Ericsson (PUBL)

发明人： LINDGREN, Ulf ,  HAGERMAN, Bo

IPC分类号： H04B7/06 ,  H04W16/18 ,  H04B17/00

CPC分类号： H04B7/0689 ,  H04B7/0617 ,  H04B7/0697 ,  H04B17/336 ,  H04W16/18

摘要： The present invention relates to a solution for determining wireless communication cell characteristics related to wireless MIMO transmission mode and dynamically selecting suitable communication transmission mode for certain parts of the wireless communication cell. The solution uses a flatness spectrum analysis of received impulse response from a plurality of measurement points in the cell using a plurality of antennas in a wireless network access gateway, e.g. a base station.

公开(公告)号：EP1032983A1

公开(公告)日：2000-09-06

申请号：EP98954881.3

申请日：1998-10-30

申请人： Telefonaktiebolaget L M Ericsson (Publ)

发明人： MAZUR, Sara ,  HAGERMAN, Bo ,  FORSS N, Ulf ,  ANDERSSON, Sören ,  OVESJÖ, Fredrik

IPC分类号： H04B7/02

CPC分类号： H04B7/086 ,  H04B7/0894 ,  H04B7/10

摘要： The present invention relates to radio systems and, more particularly, to a method and apparatus for receiving radio signals with the aid of beams generated by antenna assemblies. For each of the beams in a first of the antenna assemblies there is a beam in the second of the antenna assemblies that covers the same space area. Signals received by the second are delayed relative to signals received by the first of the antenna assemblies. Then signals from the first antenna assembly are combined with signals from the second of the antenna assemblies. The combined signals derive from beams covering the same space area. Each combined signal is then radio received in a joint radio receiver. A DOA-estimation can be calculated on the basis of radio received signals derived from all beams.