Resource assignment method and communication apparatus for wireless communication system
Resources are assigned in units of resource blocks each composed of one or more subcarriers, inter-cell interference adjustment control information is notified to each other among base stations, a transmit power limitation on each of the resource blocks in a cell is decided based on the inter-cell interference adjustment control information; and the decision of the transmit power limitation is changed sequentially beginning at a resource block having a transmit power limitation different from the transmit power limitation on an adjacent resource block.
1. A signal processing method for use in a multi-carrier wireless communication system having a plurality of subcarriers, said method comprising the steps of:
assigning resources in units of resource blocks each composed of one or more subcarriers;
notifying inter-cell interference adjustment control information to each other among base stations;
deciding a transmit power limitation on each of the resource blocks in a cell based on the inter-cell interference adjustment control information;
changing the decision of the transmit power limitation sequentially beginning at a resource block having a transmit power limitation different from the transmit power limitation of an adjacent resource block.
2. The signal processing method according to claim 1 wherein
the inter-cell interference adjustment control information is a relative narrowband Tx power.
3. The signal processing method according to claim 1 wherein the inter-cell interference adjustment control information is a high interference indication.
4. The signal processing method according to claim 1 , further comprising the step of:
notifying the inter-cell interference adjustment control information on each resource block to other base stations after generating an average of the inter-cell interference adjustment control information on adjacent resource blocks.
5. A radio base station for use in a multi-carrier wireless communication system having a plurality of subcarriers, said radio base station comprising:
a resource assignment unit that assigns resources in units of resource blocks each composed of one or more subcarriers;
a notification unit that notifies inter-cell interference adjustment control information to neighboring base stations;
an acceptance unit that accepts an inter-cell interference adjustment control information notification from neighboring base stations;
a limitation decision unit that decides a transmit power limitation on each of the resource blocks in a cell based on the inter-cell interference adjustment control information; and
a limitation decision change unit that changes the decision of the transmit power limitation sequentially beginning at a resource block having a transmit power limitation different from the transmit power limitation of an adjacent resource block.
6. The base station according to claim 5 wherein
the inter-cell interference adjustment control information is a relative narrowband Tx power.
7. The base station according to claim 5 wherein
the inter-cell interference adjustment control information is a Uplink high interference indication.
8. The base station according to claim 5 , wherein
said notification unit notifies the inter-cell interference adjustment control information on each resource block to other base stations after generating an average of the inter-cell interference adjustment control information on adjacent resource blocks.