Base station equipment, base station control equipment and communication system

1. A base station equipment in a communication system, said base station equipment comprising:

a common channel setup unit which performs a common channel setup based on information necessary to perform the common channel setup, said information supplied from a base station control equipment after a link between said base station control equipment and said base station equipment is established;

a production unit which, when the link between said base station control equipment and said base station equipment is disconnected and then established again, determines whether a track record of the common channel setup exists in said common channel setup unit, and when it is determined that said track record exists, produces a notification signal indicating said track record; and

an output unit which supplies said notification signal to said base station control equipment,

wherein said base station control equipment does not supply said information when receiving said notification signal from said base station equipment after the link between said base station control equipment and said base station equipment is established, and

said base station control equipment supplies said information when not receiving said notification signal from said base station equipment after the link between said base station control equipment and said base station equipment is established.

2. The base station equipment according to claim 1 ,

wherein said base station control equipment re-supplies said information when said track record does not exist.

3. The base station equipment according to claim 1 ,

wherein said base station control equipment is powered on after being powered off from a power-on state.

4. The base station equipment according to claim 1 ,

wherein said base station control equipment is reset while remaining in a power-on state.

5. A base station control equipment which controls a base station equipment in a communication system, said base station control equipment comprising:

an output unit which is capable of supplying necessary information when said base station equipment performs a common channel setup; and

an input unit which accepts a notification signal indicating a track record of said common channel setup in said base station equipment, said notification signal being supplied from said base station equipment when said base station equipment determines that said track record exists,

wherein said base station equipment performs the common channel setup based on said information supplied from said output unit after a link between said base station control equipment and said base station equipment is established,

when the link between said base station control equipment and said base station equipment is disconnected and then established again, said base station equipment determines whether a track record of the common channel setup exists, and when it is determined that said track record exists, supplies said notification signal to said base station control equipment,

said information is not supplied from said output unit when said notification signal is accepted by said input unit after a link between said base station control equipment and said base station equipment is established, and

said information is supplied from said output unit when said notification signal is not accepted by said input unit after the link between said base station control equipment and said base station equipment is established.

6. The base station control equipment according to claim 5 ,

wherein said notification signal is not accepted when there is a change in a specification of the communication system that includes said base station equipment.

7. A communication system, comprising:

a base station equipment; and

a base station control equipment which controls said base station equipment,

wherein said base station control equipment is capable of supplying information necessary to perform a common channel setup to said base station equipment,

said base station equipment performs the common channel setup based on said information supplied from said base station control equipment after a link between said base station control equipment and said base station equipment is established,

when the link between said base station control equipment and said base station equipment is disconnected and then established again, said base station equipment determines whether a track record of the common channel setup exists, and when it is determined that said track record exists, produces a notification signal indicating said track record,

said base station control equipment does not supply said information when receiving said notification signal from said base station equipment after the link between said base station control equipment and said base station equipment is established, and

said base station control equipment supplies said information when not receiving said notification signal from said base station equipment after the link between said base station control equipment and said base station equipment is established.

8. The communication system according to claim 7 ,

wherein said base station control equipment re-supplies said information when said track record does not exist.