APPARATUS AND METHOD TO GURANTEE RELIABLE DATA TRANSMISSION FOR LOW-RATE WIRELESS PERSONAL AREA NETWORKS(LR-WPANS)

摘要

PURPOSE: A method and an apparatus for guaranteeing the data transmission reliability in a LR- WPANs(Low-Rate Wireless Personal Area Networks) are provided to guarantee the data transmission reliability of data link layer of IEEE 802.15.4 LR-WPANs. CONSTITUTION: A data transmission part transmits data delivered from an upper layer(130). When the radio channel collision creates and the data is unable to be normally delivered, the data transmission part re-executes the data transmission. A reliability control part manages and controls the data transmission confidence level. A confusion control part prevents the transmission buffer loss of a node which can be created as the number of nodes is connected to network is increased. A receipt notification processing unit transmits a receive acknowledgement message to a transmitting node when the error and the congestion of the packet receiving data have no.