Heterogeneous Cellular Network

1. A micro base station to be used in a heterogeneous cellular network, the micro base station having resources including frequency bands and time slots and being available for a user to use, the heterogeneous cellular network comprising a plurality of base stations including a macro base station and the micro base station, the micro base station comprising: an information acquiring part configured to acquire configuration information and load information of the micro base station, and to acquire configuration information and load information of a neighboring base station adjacent to the micro base station from the neighboring base station; and a resource selection part configured to select a part of the resources from the resources to provide the selected part of the resources to the user based on the configuration information and the load information of the micro base station and the neighboring base station, which are acquired by the information acquiring part, wherein: all of the resources possessed by the micro base station are divided into N resource blocks, and that M resource blocks is selected from the N resource blocks as the part of the resources to be provided to the user, where N and M are positive integers and satisfy N≧M; the resource selection part calculates a system parameter c based on the transmitting powers of the macro base station and the micro base station, and calculates a value of the M resource blocks in accordance with the following equations, β = min ⁢ { u m u M ⁢ c ⁢ ⁢ ρ M + ρ m + λ m c ⁢ ⁢ ρ M + ρ m + c ⁢ ⁢ λ M _ , 1 } M = ⌈ N ⁢ ⁢ β ⌉ where um represents the user rate requirement of the micro base station, uM represents the user rate requirement of the macro base station, ρm represents the micro base station density, ρM represents the macro base station density, λm represents the user density of the micro base station, and λM represents the user density of the macro base station.

2. The micro base station to be used in a heterogeneous cellular network according to claim 1 , wherein: the configuration information includes positions of the base stations and transmitting power; the load information includes user rate requirement and user density; the information acquiring part further acquires micro base station density and macro base station as configuration information density from the heterogeneous cellular network; the resource selection part selects the part of the resources from the resources to provide the selected part of the resources to the user, based on the configuration information and the load information of the micro base station and the neighboring base station, and the micro base station density and the macro base station density, which are acquired by the information acquiring part.

3. The micro base station to be used in a heterogeneous cellular network according to claim 1 , wherein the resource selection part determines an amount of the selected part of the resources and randomly selects the amount of resources from the resources to provide the part of the resources to the user.

4. A resource selection method for a micro base station to be used in a heterogeneous cellular network, the micro base station having resources including frequency bands and time slots and being available for a user to use, the heterogeneous cellular network comprising a plurality of base stations including a macro base station and the micro base station, the resource selection method comprising: an information acquiring step of acquiring configuration information and load information of the micro base station, and of acquiring configuration information and load information of a neighboring base station adjacent to the micro base station from the neighboring base station; and a resource selection step of selecting the part of the resources from the resources to provide the selected part of the resources to a user, based on the configuration information and the load information of the micro base station and the neighboring base station, and the micro base station density and the macro base station density, which are acquired by the information acquiring step, wherein: all of the resources possessed by the micro base station are divided into N resource blocks, and that M resource blocks is selected from the N resource blocks as the part of the resources to be provided to the user, where N and M are positive integers and satisfy N≧M; the resource selection step calculates a system parameter c based on the transmitting powers of the macro base station and the micro base station, and calculates a value of the M resource blocks in accordance with the following equations, β = min ⁢ { u m u M ⁢ c ⁢ ⁢ ρ M + ρ m + λ m c ⁢ ⁢ ρ M + ρ m + c ⁢ ⁢ λ M _ , 1 } M = ⌈ N ⁢ ⁢ β ⌉ where um represents the user rate requirement of the micro base station, uM represents the user rate requirement of the macro base station, ρm represents the micro base station density, ρM represents the macro base station density, λm represents the user density of the micro base station, and λM represents the user density of the macro base station.

5. The resource selection method for a micro base station to be used in a heterogeneous cellular network according to claim 4 , wherein, the configuration information includes positions of the base stations and transmitting power; the load information includes user rate requirement and user density; the information acquiring step further comprises acquiring micro base station density and macro base station density as configuration information from the heterogeneous cellular network; the resource selection step comprises selecting the part of the resources from the resources to provide the selected part of the resources to a user, based on the configuration information and the load information of the micro base station and the neighboring base station, and the micro base station density and the macro base station density, which are acquired by the information acquiring step.

6. The resource selection method for a micro base station to be used in a heterogeneous cellular network according to claim 4 , wherein the resource selection step determines an amount of the selected part of the resources and randomly selects the amount of resources from the resources to provide the part of the resources to the user.

7. A heterogeneous cellular network, comprising a plurality of base stations including a macro base station and a micro base station, the macro base station and the micro base station each having resources including frequency bands and time slots and being available for a user to use, the macro base station comprising: an information acquiring part configured to acquire configuration information and load information of the macro base station; and a resource allocation part configured to allocate the resources possessed by the macro base station to a user, the micro base station comprising: an information acquiring part configured to acquire configuration information and load information of the micro base station, and to acquire configuration information and load information of a neighboring base station from the base station adjacent to the micro base station; and a resource selection part configured to select a part of the resources from the resources to provide the selected part of the resources to the user based on the configuration information and the load information of the micro base station and the neighboring base station, which are acquired by the information acquiring part, and further configured to allocate the part of the selected resources to the user, wherein: all of the resources possessed by the micro base station are divided into N resource blocks, and that M resource blocks is selected from the N resource blocks as the part of the resources to be provided to the user, where N and M are positive integers and satisfy N≧M; the resource selection part of the micro base station calculates a system parameter c based on the transmitting powers of the macro base station and the micro base station, and calculates a value of the M resource blocks in accordance with the following equations, β = min ⁢ { u m u M ⁢ c ⁢ ⁢ ρ M + ρ m + λ m c ⁢ ⁢ ρ M + ρ m + c ⁢ ⁢ λ M _ , 1 } M = ⌈ N ⁢ ⁢ β ⌉ where um represents the user rate requirement of the micro base station, uM represents the user rate requirement of the macro base station, ρm represents the micro base station density, ρM represents the macro base station density, λm represents the user density of the micro base station, and λM represents the user density of the macro base station.

8. The heterogeneous cellular network according to claim 7 , wherein, the configuration information includes positions of the base stations and transmitting power; the load information includes user rate requirement and user density; the information acquiring part of the micro base station further acquires micro base station density and macro base station density as configuration information from the heterogeneous cellular network; the resource selection part of the micro base station selects the part of the resources from the resources to provide the selected part of the resources to the user, based on the configuration information and the load information of the micro base station and the neighboring base station, and the micro base station density and the macro base station density, which are acquired by the information acquiring part.

9. The heterogeneous cellular network according to claim 7 , wherein the resource selection part of the micro base station determines an amount of the selected part of the resources and randomly selects the amount of resources from the resources to provide the part of the resources to the user.