Handover method with mobile relay station

A handover method for a Base Station (BS), the handover method comprising:

• receiving a handover request message;
• determining whether the handover request message is from a Mobile Relay Station (MRS) based on an Identifier (ID) included in the handover request message;
• and
• transmitting a handover response message to the Mobile Relay Station, wherein the handover response message indicates that handover requests of the Mobile Relay Station and the Mobile Stations which are attached to the Mobile Relay Station are recognized.

A handover method in an Mobile Relay Station (MRS) environment, the handover method comprising:

• transmitting a handover request message to a Base Station, wherein the handover request message includes an Identifier (ID) of the Mobile Relay Station and the transmitting is performed by the Mobile Relay Station;
• transmitting a handover response message from the Base Station to the Mobile Relay Station, wherein the handover response message indicates that the Base Station recognizes handover requests of the Mobile Relay Station and the First Mobile Station;
• transmitting a handover execution message to the Base Station, wherein the handover execution message includes information on a target Base Station;
• and
• performing handovers of the Mobile Stations which are attached to the Mobile Relay Station.

A handover method for a Mobile Relay Station (MRS), the handover method comprising:

• transmitting a handover request message to a Base Station (BS), wherein the handover request message includes an Identifier (ID) of the Mobile Relay Station;
• receiving a handover response message from the Base Station, wherein the handover response message indicates that the Base Station recognizes a handover request of the Mobile Relay Station;
• transmitting a handover execution message to the Base Station, wherein the handover execution message includes information on a target Base Station;
• transmitting a ranging request message to the target Base Station;
• receiving a ranging response message from the target Base Station, wherein the ranging response message includes first Identifiers that are newly assigned to the Mobile Stations which are attached to the Mobile Relay Station;
• and
• generating a mapping relation between second IDs that are previously assigned to the Mobile Stations and the first IDs that are newly assigned to the Mobile Stations.