Apparatus and method for managing mobility in a wireless communication system

A method for operating a first base station (BS) in a wireless communication system, the method comprising:

• receiving, from a second BS included in a BS set, a scheduling message comprising information of a scheduling for first data communication between a mobile station (MS) and a BS set;
• transmitting, to the MS, the scheduling message comprising information of the scheduling for the first data communication;
• transmitting, to the second BS, a request message for requesting that the first BS performs a scheduling for second data communication between the MS and the BS set;
• receiving, from the second BS, a response message for responding to the request message;
• performing the scheduling for the second data communication between the MS and the BS set1;
• and
• transmitting, to the MS and BS set, a scheduling message comprising the information of the scheduling for the second data communication,
• wherein the first BS and the second BS are included in the BS set to cooperatively serve the MS.

An apparatus for a first base station (BS) in a wireless communication system, the apparatus comprising:

• at least one transceiver;
• and
• at least one processor operatively coupled to the at least one transceiver,
• wherein the at least one processor is configured to control to:
• perform a scheduling for first data communication between a mobile station (MS) and a BS set,
• transmit, to the MS, a scheduling message comprising information of the scheduling for the first data communication,
• transmit, to a second BS included in the BS set, a request message for requesting the second BS transmit/receive a control massage related to the MS,
• receive, from the second BS, a response message in response to the request message,
• receive, from the second BS, the control message related to the MS,
• perform a scheduling for second data communication between the MS and the BS set based on the control message related to the MS, and
• transmit, to the BS set, a scheduling message comprising information of the scheduling for the second data communication,
• wherein the first BS and the second BS are included in the BS set to cooperatively serve the MS.

An apparatus for a first base station (BS) in a wireless communication system, the apparatus comprising:

• at least one transceiver;
• and
• at least one processor operatively coupled to the at least one transceiver;
• wherein the at least one processor is configured to control to:
• receive, from second BS in a BS set, a scheduling message comprising information of a scheduling for first data communication between a mobile station (MS) and a BS set,
• transmit, to the MS, the scheduling message comprising information of the scheduling for the first data communication,
• transmit, to a second BS, a request message for requesting to that the first BS performs a scheduling for second data communication between the MS and the BS set,
• receive, from the second BS, a response message for responding to the request message,
• perform the scheduling for the second data communication between the MS and the BS set, and
• transmit, to the MS, a scheduling message comprising the information of the scheduling for the second data communication,
• wherein the first BS and the second BS are included in the BS set to cooperatively serve the MS.