Base station, mobile station, and redirected cell determination method

1. A base station for operating multiple cells each having a predefined bandwidth, comprising:

a redirected cell determination unit configured to determine, in response to receipt of mobile station capability information indicative of at least one of a bandwidth and a frequency band that a mobile station residing in a coverage area of the base station is capable of handling, at least one of a redirected cell and a cell layer to which the mobile station associated with the mobile station capability information is to be redirected, based on the bandwidth and the frequency band in the mobile station capability information; and

a transmission unit configured to transmit redirected cell information including the determined redirected cell or cell layer to the mobile station,

wherein the redirected cell determination unit determines the at least one of the redirected cell and the cell layer by comparing the bandwidth in the mobile station capability information with respective amounts of remaining radio resources of the cells.

2. The base station as claimed in claim 1 , wherein the mobile station capability information is transmitted by including information indicative of the bandwidth and the frequency band that the mobile station is capable of handling in a connection request and transmitting the information.

3. The base station as claimed in claim 1 , wherein the mobile station capability information is transmitted from an upper station.

4. The base station as claimed in claim 1 , wherein the redirected cell determination unit is configured to determine either the redirected cell or the cell layer to which the mobile station is to be redirected based on a bandwidth operated for each cell.

5. A mobile station, comprising:

a control plane processing unit configured to connect, in response to receipt of either a redirected cell or a cell selected from a cell layer to which the mobile station is to be redirected from a base station, to the redirected cell or the cell selected from the cell layer, based on mobile station capability information associated with the mobile station, the mobile station capability information being indicative of a bandwidth and a frequency band that the mobile station residing in a coverage area of the base station is capable of handling,

wherein the base station determines either the redirected cell or the cell layer by comparing a bandwidth in mobile station capability information associated with the mobile station with respective amounts of remaining radio resources of multiple cells.

6. The mobile station as claimed in claim 5 , further comprising:

a storage unit configured to store the mobile station capability information indicative of the bandwidth and the frequency band that the mobile station is capable of handling; and

a connection request transmission unit configured to transmit a connection request by including the mobile station capability information in the connection request,

wherein the control plane processing unit is configured to connect to either the redirected cell transmitted by the base station or the cell selected from the cell layer, the redirected cell and the cell layer being determined based on the mobile station capability information transmitted by the connection request transmission unit.

7. A method of determining a redirected cell, comprising:

obtaining mobile station capability information at a base station configured to operate multiple cells each having a predefined bandwidth, the mobile station capability information being indicative of a bandwidth and a frequency band that a mobile station residing in a coverage area of the base station is capable of handling;

determining at the base station either a redirected cell or a cell layer to which the mobile station associated with the mobile station capability information is to be redirected based on the bandwidth and the frequency band in the mobile station capability information; and

transmitting either the redirected cell or the cell layer from the base station to the mobile station,

wherein determining either the redirected cell or the cell layer comprises comparing the bandwidth in the mobile station capability information with respective amounts of remaining radio resources of the cells.