Method and device for determining radio receiving direction in mobile communications network
A mobile communication network, receiving direction technology, applied in the mobile communication network to determine the radio receiving direction and the field of equipment, can solve problems such as large computational overhead
Inactive Publication Date: 2003-09-10
WSOU INVESTMENTS LLC
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Problems solved by technology
However, known methods involve considerable computational overhead and have specific prerequisites, such as keeping in touch with several radio base stations or the presence of groups of antennas
Method used
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[0024] Figure 1a A schematic structure of a mobile communication network with at least one radio base station site BS connected to a core network CN of the mobile communication network according to the invention is illustrated. A radio base station BTS comprising three radio transmitters T1, T2 and T3 is located at the radio base station BS, and the three radio transmitters T1, T2 and T3 provide different radio coverage areas of the radio base station BS (see S1-S3 of Fig. 1b) . The radio transmitters do not have to be located in a single radio base station, but can also each be combined in different radio base stations. This is the case, for example, if different radio transmission methods are used in the radio coverage area.
[0025] Radio transmitters T1, T2 or T3 transmit radio signals to mobile communication terminals through their transmitting antennas in the radio coverage area, here are sector antennas 1, 2 and 3, Figure 1a One of the mobile communication terminals ...
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A process is proposed for determining the radio reception direction on the downlink at a radio base station location, comprising a plurality of radio coverage areas, in a mobile communications network, in which in each area on the downlink radio signals are radiated by means of a transmitting antenna for reception by at least one mobile communications terminal. For the determination of the radio reception direction, at least the reception levels of the radio signals radiated by a first and a second of the transmitting antennae are measured by the relevant mobile communications terminal. From the two measured reception levels, a ratio value is formed which is independent of the prevailing radio propagation conditions, and this ratio value is used to effect an estimation of azimuthal angles for the radio reception direction to be determined. The invention can thus be implemented in any individual radio base station location, it being unnecessary for there to be contact with a plurality of radio base stations. The calculation of a ratio value serves to eliminate influences which can arise from changing radio propagation conditions. In this way a reliable estimation of the azimuthal angles and determination of the radio reception direction is possible. This is independent of the prevailing radio propagation conditions.
Description
[0001] The present invention is based on a prior application (EP 02360074.5), which is hereby incorporated by reference. technical field [0002] The invention relates to a method for determining the direction of radio reception on the downlink in the position of a radio base station in a mobile communication network. The invention also relates to a mobile communication network with devices, in particular computers, radio base stations and mobile communication terminals for carrying out the method. Background technique [0003] In mobile communication networks, especially in cellular mobile communication networks, such as GSM (Global System for Mobile Communications) or UMTS (Universal Mobile Telecommunications System), it is important to know the instant location of a mobile user. So-called "location-based services", i.e. mobile services that rely on the instant location of a mobile user, are attracting increasing interest. In order to be able to perform these and similar ...
Claims
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IPC IPC(8): G01S1/14G01S5/12H01Q1/24H04W64/00
CPCH01Q1/246G01S1/14G01S5/12H04W64/00
Inventor 马赛斯·施瑞那迈克尔·坦格曼
Owner WSOU INVESTMENTS LLC