Proportional-fair radio resource management
AssigneeNtt Docomo, Inc.
InventorMoo Ryong Jeong
Life of this patent
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Abstract
In one embodiment, the unit share data rates for a plurality of mobile stations are determined with regard to two resource groups. A differentiation factor for each mobile station is formed from a ratio of its unit share data rates. The resulting differentiation factors are sorted and classified into two groups according to a proportional fair border determining function. A first one of the resource groups is allocated to the mobile stations corresponding to a first one of the differentiation factor groups. Similarly, a second one of the resource groups is allocated to the mobile stations corresponding to a remaining second one of the differentiation factor groups.
Claims14
A method of associating a plurality of mobile stations between a first resource group and a second resource group, comprising:
- for each mobile station, determining a first unit share rate for the mobile station for a first one of the resource groups and a second unit share rate for the mobile station for a remaining second one of the resource groups;
- for each mobile station, determining a corresponding differentiation factor from the mobile station's first unit share rate and the mobile station's second unit share rate;
- sorting the differentiation factors into one of a monotonically ascending order or a monotonically descending order to produce sorted differentiation factors;
- applying a proportional fair border determining function to the sorted differentiation factors to determine a border one of the sorted differentiation factors, wherein a first portion of the sorted differentiation factors includes the border differentiation factor and any differentiation factors that are less than or equal to the border differentiation factor and a second portion includes the border differentiation factor and any differentiation factors that are greater than or equal to the border differentiation factor, and
- associating the mobile stations corresponding to the first portion with the first resource group and associating the mobile stations corresponding to the second portion with the second resource group.
A base station, comprising:
- a processor configured to sort a plurality of differentiation factors corresponding to a plurality of mobile stations, wherein each differentiation factor is a ratio of a first unit share rate for the corresponding mobile station using a first resource group to a second unit share rate for the corresponding mobile station using a second resource group, the processor being configured to sort the differentiation factors into one of a monotonically ascending order or a monotonically descending order to produce sorted differentiation factors and to apply a proportional fair border determining function to the sorted differentiation factors to determine a border one of the sorted differentiation factors, wherein a first portion of the sorted differentiation factors includes the border differentiation factor and any differentiation factors that are less than or equal to the border differentiation factor and a second portion includes the border differentiation factor and any differentiation factors that are greater than or equal to the border differentiation factor, and wherein the processor is further configured to associate the mobile stations corresponding to the first portion with the first resource group and to associate the mobile stations corresponding to the second portion with the second resource group;
- and
- a memory to store the resource group associations.
Dependencies are inferred from the claim text.