Patent ID: 8249514
Filing Date: 2012-08-21
Classification: H04B

Abstract:
1. A radio communication method performed by a first radio communication device including an adaptive array antenna, and by a second radio communication device configured to perform radio communication with the first radio communication device, the method comprising the steps of: monitoring, at the first radio communication device, change of a parameter for the adaptive array antenna, the parameter being used to control a directivity of a beam to be transmitted to the second radio communication device; suppressing, at the first radio communication device, control of the directivity, when a value indicating the change has fallen below a predetermined value in the step of monitoring; transmitting, from the first radio communication device to the second radio communication device, decrease information indicating that the value indicating the change has fallen below the predetermined value, when the value indicating the change has fallen below the predetermined value in the step of monitoring; judging, at the second radio communication device, a delay status of a reception signal received from the first radio communication device, when receiving the decrease information transmitted from the first radio communication device; equalizing, at the second radio communication device, a signal to be transmitted to the first radio communication device, based on the delay status of the reception signal; and transmitting the equalized signal from the second radio communication device to the first radio communication device.