Method and apparatus for allocation of radio resources
First Claim
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1. A method of allocating radio resources to at least one radio link in a cell within a mobile radio communications system, wherein the radio resources are arranged in sets or channels divided into time frames, the method comprising:
- generating an estimate of a cost of allocating radio resources available for allocation to the at least one radio link, wherein the cost estimate is generated in dependency of which radio resources have been used within the cell at previous times and of a variation in interference that would be caused by allocating a radio resource that was not allocated to a radio link in the cell during a most recently scheduled time frame; and
allocating radio resources to the at least one radio link in dependency of the cost estimate,wherein the step of generating an estimate of the cost comprises;
checking whether an available channel was previously allocated to a radio link in the cell during a time frame being the most recently scheduled time frame; and
associating an additional cost to the available channel if it is included in a channel set not previously allocated to a radio link in the most recently scheduled time frame,wherein the additional cost is not associated to an available channel previously allocated to a radio link in the most recently scheduled time frame.
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Abstract
An estimate of a cost of allocating radio resources available for allocation to a at least one radio link within a cell is generated in dependency of which radio resources have been used within the cell at previous times. This cost estimate can be compared to a quality gain of allocating the radio resources to the radio link, and an allocation decision can be made in dependency of the comparison result.
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20 Claims
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1. A method of allocating radio resources to at least one radio link in a cell within a mobile radio communications system, wherein the radio resources are arranged in sets or channels divided into time frames, the method comprising:
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generating an estimate of a cost of allocating radio resources available for allocation to the at least one radio link, wherein the cost estimate is generated in dependency of which radio resources have been used within the cell at previous times and of a variation in interference that would be caused by allocating a radio resource that was not allocated to a radio link in the cell during a most recently scheduled time frame; and allocating radio resources to the at least one radio link in dependency of the cost estimate, wherein the step of generating an estimate of the cost comprises; checking whether an available channel was previously allocated to a radio link in the cell during a time frame being the most recently scheduled time frame; and associating an additional cost to the available channel if it is included in a channel set not previously allocated to a radio link in the most recently scheduled time frame, wherein the additional cost is not associated to an available channel previously allocated to a radio link in the most recently scheduled time frame. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer program product for evaluating radio resources in a cell within a mobile radio communications system, the computer program product comprising computer program code operable to, when run on a computer, execute the following:
generating an estimate of a cost of allocating radio resources available for allocation to at least one radio link, wherein the cost estimate is generated in dependency of which radio resources have been used within the cell at previous times and of a variation in interference that would be caused by allocating a radio resource that was not allocated to a radio link in the cell during a most recently scheduled time frame, and wherein the step of generating an estimate of the cost comprises; checking whether an available channel was previously allocated to a radio link in the cell during a time frame being the most recently scheduled time frame; and associating an additional cost to the available channel if it is included in a channel set not previously allocated to a radio link in the most recently scheduled time frame, wherein the additional cost is not associated to an available channel previously allocated to a radio link in the most recently scheduled time frame. - View Dependent Claims (8)
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9. An apparatus for allocating radio resources to at least one radio link in a cell within a mobile radio communications system, wherein the radio resources are arranged in sets of channels divided into time frames, the apparatus comprising:
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cost estimating means arranged to generate an estimate of the cost of allocating radio resources available for allocation to the at least one radio link, the cost estimating means being arranged to generate the cost estimate in dependency of which radio resources have been used within the cell at previous times and of a variation in interference that would be caused by allocating a radio resource that was not allocated to a radio link in the cell during a most recently scheduled time frame, the cost estimating means further being arranged to check whether an available channel was previously allocated to a radio link in the cell during a time frame being the most recently scheduled time frame, to associate an additional cost to the available channel if the available channel is included in a channel set not previously allocated to a radio link in the most recently time frame, and to not associate the additional cost to an available channel previously allocated to a radio link in the most recently scheduled time frame. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for allocating radio resources to at least one radio link in a cell within a mobile radio communications system, wherein the radio resources are arranged in sets of channels divided into time frames, the apparatus comprising:
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cost estimating circuitry configured to generate an estimate of the cost of allocating radio resources available for allocation to the at least one radio link, the cost estimating circuitry being configured to generate a lower cost estimate for an old set of radio channel resources recently allocated within the cell and a higher cost estimate for a new set of radio channel resources that have not been recently, previously-allocated in order to minimize interference variations caused by allocating the new set of radio channel resources that have not been recently, previously-allocated, wherein the cost estimating circuitry is configured to check whether an available channel was previously allocated to a radio link in the cell during a most recently scheduled time frame and to associate an additional cost to the available channel if the available channel is included in a channel set not previously allocated to a radio link in the most recently scheduled time frame. - View Dependent Claims (17, 18, 19, 20)
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Specification