公开(公告)号：KR100645868B1

公开(公告)日：2006-11-14

申请号：KR1020050093241

申请日：2005-10-05

Applicant: 한국전기연구원

Inventor： 오휘명 ,  최성수 ,  이재조 ,  김관호 ,  황민태 ,  하현석

IPC: H04L12/28 ,  H04B3/54

Abstract: A multimedia access control method for very high speed power line communication is provided to considerably improve a buffer overflow phenomenon of a video or data node and lower a frame loss rate in very high speed power line communication. After nodes, which are currently performing transmission, finishes the transmission of frames, all of the nodes having frames to be transmitted detect a carrier on a medium. If no carrier of a medium is sensed during a certain time, priority levels of each frame to be transmitted are determined. A node having a frame of the highest priority level transmits the frame, and in this case, the node transmits the frame selected according to a back-off counter value determined between 0 and a CW(Contention Window). The CW value is determined according to the number of standby frames accumulated in a standby queue of each node.

Abstract translation: 提供了用于超高速电力线通信的多媒体访问控制方法，以显着改善视频或数据节点的缓冲器溢出现象并且降低超高速电力线通信中的帧丢失率。 在当前正在执行传输的节点完成帧的传输之后，具有要传输的帧的所有节点检测介质上的载波。 如果在特定时间内没有感测到媒体的载体，则确定要发送的每个帧的优先级。 具有最高优先级的帧的节点发送该帧，并且在这种情况下，节点发送根据在0和CW（竞争窗口）之间确定的退避计数器值选择的帧。 CW值根据每个节点的备用队列中累积的备用帧的数量确定。