Base station arrangements

A technology of base station and antenna unit, applied in the field of base station layout, can solve problems such as the reduction of available maximum output power, and achieve the effect of effective utilization

Active Publication Date: 2012-07-11
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Typically, the magnitude varies over the elements in the weight vector (eigenvector), which causes a

Method used

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Embodiment Construction

[0039] image 3 is a block diagram of a base station arrangement 100 of the invention according to a first implementation. It is connected to an antenna part 10 with a plurality of first antenna elements 1 having a first polarization 1 ,2 1 、3 1 、4 1 and a plurality of second antenna elements 1 of another polarization than said first polarization 2 ,2 2 、3 2 、4 2 . The antenna section 10 thus here comprises four dual polarized antenna elements or antennas. Each antenna unit has an antenna port 11 1 、11 2 ,...,11 8 , the ports are here numbered consecutively for the corresponding antenna components for the sake of brevity. The base station arrangement 21 comprises a plurality of antenna ports, here referred to as feed ports 21 1 ,…,twenty one 8 , the corresponding antenna port is connected to the feed port 21 through the feed cable 1 ,…,twenty one 8 . Each feed port is connected to a corresponding power amplification unit 41 1 , ... 41 8 . Different kinds of...

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Abstract

Base station arrangement (100) adapted to receive signals from a user station; adapted to be connected to or comprises a plurality of antenna elements (1, 1, 2, 2,... 4, ) with antenna ports (11,... 11) and a signal processing unit (20). The base station (21) also comprises a signal pre-processing functional unit (30) to collect channel correlation information. It is adapted to establish if there is one or more distinguishing characteristics comprising different correlation properties of different configuration properties associated with the antenna elements. Antenna elements are then assigned to different groups based on said configuration properties, and the channel correlation information is used to generate weighting information which is applied to antenna ports connected to antenna elements to control the antenna ports connected to antenna elements to control the antenna element transmit power individually or groupwise.

Description

technical field [0001] The invention relates to a base station arrangement suitable for connection to or comprising an antenna part having a plurality of antenna elements. It includes a signal processing unit to which the antenna port of the antenna part is connected. The invention also relates to a method in such a base station arrangement for enabling the control of downlink multipath transmissions over a plurality of ports to subscriber stations. Background technique [0002] For mobile communication systems, multipath downlink transmissions suffer from many fadings and many efforts have been made to allow efficient handling of power in the base station with the aim of also allowing good reception possibilities in the subscriber stations. Due to the use of multiple antennas, the signals on the respective antennas must be transmitted with appropriate power, which is usually handled by applying a so-called downlink weight vector. [0003] Different approaches have been im...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04W52/42
CPCH04B7/0632H04W52/42H04B7/0626
Inventor 比约恩・约翰尼森斯文・彼德森
Owner TELEFON AB LM ERICSSON (PUBL)
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