Mobile station, radio base station, and communication control method

A radio base station of a serving cell that is configured to communicate with a mobile station, the radio base station comprising:

• a processor, in conjunction with a transmitter, configured to transmit a control signal for instructing measurement of:
• radio quality of the serving cell for at least one carrier, and
• radio quality of at least one neighboring cell for the at least one carrier,
• wherein the processor configures a list of cells including the serving cell and the at least one neighboring cell maintained by the mobile station, and
• wherein a predetermined event is triggered based on first measurement results, the first measurement results comprising at least one of the measured radio quality of the serving cell and the measured radio quality of the at least one neighboring cell, the predetermined event being designated by the radio base station;
• and
• a receiver, in conjunction with the processor, configured to receive, if the predetermined event is triggered, a measurement report including:
• the first measurement results that triggered the predetermined event;
• and
• a second measurement results comprising radio quality and a physical cell ID of:
• a predetermined number of the neighboring cells in a carrier other than the at least one carrier for which the predetermined event is triggered;
• and
• a neighboring cell having best radio quality,
• wherein the list of cells is assigned to the mobile station by the radio base station of the serving cell,
• wherein, in the second measurement results, the predetermined number of the neighboring cells are listed in an order based on received power of a reference signal or received quality of the reference signal, and
• wherein the predetermined number of the neighboring cells in the second measurement results is assigned to the mobile station by the radio base station of the serving cell.

A communication control method in a mobile station for communicating with a radio base station of a serving cell, the method comprising:

• maintaining a list of cells including the serving cell and at least one neighboring cell, wherein the list is configurable by the radio base station;
• measuring radio quality of the serving cell for at least one carrier;
• measuring radio quality of the at least one neighboring cell for the at least one carrier;
• determining if a predetermined event is triggered based on first measurement results, the first measurement results comprising at least one of the measured radio quality of the serving cell and the measured radio quality of the at least one neighboring cell, the predetermined event being designated by the radio base station;
• and
• transmitting to the radio base station, if the predetermined event is triggered, a measurement report including:
• the first measurement results that triggered the predetermined event;
• and
• second measurement results comprising radio quality and a physical cell ID of:
• a predetermined number of the neighboring cells in a carrier other than the at least one carrier for which the predetermined event is triggered;
• and
• a neighboring cell having best radio quality,
• wherein the list of cells is assigned to the mobile station by the radio base station of the serving cell,
• wherein, in the second measurement results, the predetermined number of the neighboring cells are listed in an order based on received power of a reference signal or received quality of the reference signal, and
• wherein the predetermined number of the neighboring cells in the second measurement results is assigned to the mobile station by the radio base station of the serving cell.

A communication control method in a radio base station of a serving cell for communicating with a mobile station, the method comprising:

• configuring a list of cells including the serving cell and at least one neighboring cell maintained by the mobile station;
• transmitting a control signal for instructing measurement of:
• radio quality of the serving cell for at least one carrier, and
• radio quality of the at least one neighboring cell for the at least one carrier,
• wherein a predetermined event is triggered based on first measurement results, the first measurement results comprising at least one of the measured radio quality of the serving cell and the measured radio quality of the at least one neighboring cell, the predetermined event being designated by the radio base station;
• and
• receiving, if the predetermined event is triggered, a measurement report including:
• the first measurement results that triggered the predetermined event;
• and
• a second measurement results comprising radio quality and a physical cell ID of:
• a predetermined number of the neighboring cells in a carrier other than the at least one carrier for which the predetermined event is triggered;
• and
• a neighboring cell having best radio quality,
• wherein the list of cells is assigned to the mobile station by the radio base station of the serving cell,
• wherein, in the second measurement results, the predetermined number of the neighboring cells are listed in an order based on received power of a reference signal or received quality of the reference signal, and
• wherein the predetermined number of the neighboring cells in the second measurement results is assigned to the mobile station by the radio base station of the serving cell.