Allocation of channels using interference estimation
First Claim
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1. 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.
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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.
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Citations
21 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 19, 20)
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8. A radiotelephone system comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21)
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Specification