US 8,477,704 B2Granted

Radio resource assignment method and base station device

AssigneeHitachi, Ltd.

InventorsShinnosuke Komamura, Mikio Kuwahara

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Abstract

A radio resource assignment method, wherein it is determined at a predetermined timing whether a cell is congested or not; the determination result is notified to adjacent base stations; results of determination of congestion or non-congestion received from adjacent base stations are stored; when it is determined that the base station is not congested, a check is made whether or not the adjacent base stations are congested; when the adjacent base stations are congested, the use of the resource blocks is restricted to decide an empty resource block; and information on the decided resource block is notified to the adjacent base stations. When it is determined that the base station is congested, the information on the empty resource blocks received from the adjacent base stations is checked, and the empty resource blocks are assigned to mobile terminal devices within the cell.

Claims12

Dependent claims

A base station for wirelessly communicating with a plurality of mobile terminal devices, said base station comprising:

a control unit for controlling assignment of radio resources to said plurality of mobile terminal devices;
and
a storage unit, wherein:
said base station is configured to divide radio resources that are available to the wireless communications with said mobile terminal devices into a plurality of resource blocks on a region represented by frequency and time base, and controls the assignment of said radio resources to said plurality of mobile terminal devices on said resource block basis;
and
said control unit is configured to determine whether or not a cell, located in a region where radio waves transmitted from said base station are reachable, is congested in a predetermined timing;
to notify adjacent base stations of the determination result;
to store the result of determination of congestion or non-congestion received from the adjacent base stations in the said storage unit;
to check whether or not the adjacent base stations are congested, when said base station determined that said cell is not congested;
to voluntarily restrict the use of resource blocks and to divide an empty resource block, when the adjacent base stations are congested;
and to notify the adjacent base stations of information on the empty resource block.

8 more elements

A method of assigning radio resources to a plurality of mobile terminal devices within a cell of a base station, comprising:

dividing the radio resources available for wireless communications with mobile terminal devices into a plurality of resource blocks on a region represented by frequency and time base, and controlling assignment of said radio resources to said plurality of mobile terminal devices by the base station on said resource block;
determining, by the base station, whether or not said cell is congested in a predetermined timing, notifying the determination result to adjacent base stations, and storing the result of determination of congestion or non-congestion received from said adjacent base stations, and
when said base station determined that said cell is not congested, checking, by said base station, whether or not adjacent base stations are congested, and when said adjacent base stations are determined to be congested, voluntarily restricting the use of resource blocks to decide an empty resource block, and notifying said base stations of information on said decided empty resource block.

Dependencies are inferred from the claim text.

Facts

Application: 12/826,202Filed 29 Jun 2010
Priority: JP 2009-19378525 Aug 2009
Published: US 2011/0158187 A130 Jun 2011
Granted: 2 Jul 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04W 72/52
Allocation or scheduling criteria for wireless resources: based on load
H04W 16/06
Resource partitioning among network components, e.g. reuse partitioning: hybrid resource partitioning, e.g. channel borrowing
H04W 72/27
Control channels or signalling for resource management: between access points
H04W
Wireless communication networks