US 2011/0237260 A1Published application

Radio communication system, base station, radio communication method and program

OwnerMakoto Tsurunoinventor

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Abstract

A base station of the present invention includes: a bandwidth information notifier that exchanges information on unoccupied bandwidth in the allocatable bandwidth to the terminal under control which, among terminals, belongs to a QoS class that needs bandwidth guarantee, with neighboring base stations; and a candidate selector that, when the base station is the originating base station of the terminal under control, predicts whether the terminal under control is determined as being unaccommodatable by each neighboring base station, based on the unoccupied bandwidth of the neighboring base station, and excludes the neighboring base station that was predicted to be determined as being unable to accommodate the terminal under control from the candidates of target base stations of the terminal under control.

Claims9

Dependent claims

A radio communication system comprising terminals and base stations which, at the time of handover of a terminal under control which, among the terminals, belongs to a QoS (Quality of Service) class that needs bandwidth guarantee, perform, when the base station is the target base station of the terminal under control, admission control of determining whether the base station can accommodate the terminal under control when adaptive modulation is implemented, wherein

the base station includes:
a bandwidth information notifier that exchanges information on unoccupied bandwidth in the allocatable bandwidth to the terminal under control, with neighboring base stations;
and,
a candidate selector that, when the base station is the originating base station of the terminal under control, predicts whether the terminal under control is determined as being unaccommodatable by each neighboring base station, based on the unoccupied bandwidth of the neighboring base station, excludes the neighboring base station that was predicted to be determined as being unable to accommodate the terminal under control, from among the candidates of target base stations of the terminal under control.

1 more element

A base station which, at the time of handover of a terminal under control which, among terminals, belongs to a QoS class that needs bandwidth guarantee, performs, when the base station is the target base station of the terminal under control, admission control of determining whether the base station can accommodate the terminal under control when adaptive modulation is implemented, comprising:

a bandwidth information notifier that exchanges information on unoccupied bandwidth in the allocatable bandwidth to the terminal under control, with neighboring base stations;
and,
a candidate selector that, when the base station is the originating base station of the terminal under control, predicts whether the terminal under control is determined as being unaccommodatable by each neighboring base station, based on the unoccupied bandwidth of the neighboring base station, and excludes the neighboring base station that was predicted to be determined as being unable to accommodate the terminal under control, from among the candidates of target base stations of the terminal under control.

A radio communication method based on a base station which, at the time of handover of a terminal under control which, among terminals, belongs to a QoS class that needs bandwidth guarantee, performs, when the base station is the target base station of the terminal under control, admission control of determining whether the base station can accommodate the terminal under control when adaptive modulation is implemented, comprising:

a bandwidth information notifying step of exchanging information on unoccupied bandwidth in the allocatable bandwidth to the terminal under control, with neighboring base stations;
and,
a candidate selecting step of, when the base station is the originating base station of the terminal under control, predicts whether the terminal under control is determined as being unaccommodatable by each neighboring base station, based on the unoccupied bandwidth of the neighboring base station, leaving out the neighboring base station that was predicted to be determined as being unable to accommodate the terminal under control, from among the candidates of target base stations of the terminal under control.

Dependencies are inferred from the claim text.