Radio communication system, radio base station, and communication control method

摘要

Upon receipt of an RLF Indication message indicating a failure in a handover where a radio base station eNB10-1 is the handover source from the other radio base station eNB, the radio base station eNB10-1 can recognize that its coverage is not adjusted appropriately by referring to the RLF Indication message. Moreover, the radio base station eNB10-1 can adjust coverage appropriately by expanding the radiation area of the antenna 101 whose radiation area is directed toward the other radio base station eNB being the handover target, among the antennas 101 included in the radio base station eNB10-1.

主权项

1. A radio communication system comprising:
a first radio base station; a second radio base station, wherein the second radio base station comprises a transmitter configured to send the first radio base station handover failure information indicating that a failure occurs in a handover in which the first radio base station is involved; wherein the first radio base station comprises: an antenna; a receiver configured to receive the handover failure information from the second radio base station; and a controller configured to:
determine a handover failure rate calculated based on a history of the handover failure information received by the receiver,adjust the radiation area of the antenna according to the handover failure rate, and wherein the controller is configured to make the adjustment in proportionality to the handover failure rate so that the larger the rate of handover failure indicated by the history of the first handover failure information, the wider the radiation area of the antenna is expanded.