Allocation of channels using interference estimation
AssigneeTelefonakitebolaget L M Ericsson
InventorsClaes H. Andersson, Hakan O. Eriksson, Magnus E. Madfors, Bengt Y. Persson, Alex K. Raith
Life of this patent
Estimating the term…
Abstract
The present invention relates to systems and methods for allocating channels in a radiotelephone system wherein local estimation of interference for a potential new connection is achieved by measuring interference on the available downlink channels at a plurality of locations within a cell. The measurements can be made, for example, by already connected mobile stations, mobile stations which are not connected, fixed measurement stations or any combination thereof.
Claims21
A method of allocating a downlink channel to a new connection for an unconnected remote station within a cell of a radio telecommunication system comprising the steps of:
- measuring the interference on each of a plurality of downlink channels at one or more locations within the cell;
- determining a transmission loss for each of the plurality of downlink channels between said one or more locations and a base station of the cell;
- calculating an estimated carrier-to-interference ratio, for said unconnected remote station, for each of the plurality of downlink channels using the measured interference and said transmission loss;
- and
- allocating one of the plurality of downlink channels to said unconnected remote station based on each said estimated carrier-to-interference ratio.
A radiotelephone system comprising:
- means for measuring interference on each of a plurality of downlink channels at one or more locations within a cell;
- means, responsive to said measuring means, for determining a transmission loss for each of the plurality of downlink channels between said one or more locations and a base station of the cell;
- means, responsive to said determining means, for estimating a carder-to-interference ratio, for a particular remote station that is unconnected to said system, on each of the plurality of downlink channels based on the measured interference and said transmission loss;
- and
- means, responsive to said estimating means, for allocating one of said plurality of downlink channels to said particular remote station based on said each estimated carrier-to-interference ratio.
Dependencies are inferred from the claim text.