Patent ID: 8520516
Filing Date: 2013-08-27
Classification: H04L

Abstract:
1. A communication device which receives data frames transmitted by another communication device, said communication device comprising: a receiving unit configured to receive data frames for each block including data frames continuously transmitted by the other communication device; a measuring unit configured to measure a reception quality of the block received by said receiving unit, the reception quality indicating a level of a received signal of the block received by said receiving unit; a physical layer (PHY) rate determining unit configured to determine, based on the reception quality of the block measured by said measuring unit, a PHY rate that is used by the other communication device for transmitting data frames included in a next block which is immediately after the block; a block size control unit configured to determine, based on the reception quality of the block measured by said measuring unit, a block size indicating the number of data frames to be included in the next block by the other communication device; and a transmission unit configured to transmit feedback information including the PHY rate determined by said PHY rate determining unit and the block size determined by said block size control unit to the other communication device, wherein said block size control unit is configured to determine the block size to be a value smaller than a maximum value of a block size that can be transmitted by the other communication device, when a value indicating the reception quality of the block is within a predetermined range including a PHY rate threshold which is a threshold for changing a PHY rate.