公开(公告)号：KR1020070009102A

公开(公告)日：2007-01-18

申请号：KR1020050064109

申请日：2005-07-15

Applicant: 전자부품연구원

Inventor： 김호년 ,  이재용 ,  양승운 ,  유준재 ,  원광호 ,  김재호

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04W74/0816 ,  H04W4/90 ,  H04W28/14 ,  H04W76/50 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/26

Abstract: A method for controlling data transmission in a wireless network system including plural nodes, and a sensor network using the same, and a recording medium are provided to configure a buffer of each node so as to adjust a duty cycle according to a threshold value and the priority of data, thereby improving energy efficiency according to variation of a network traffic, guaranteeing prioritized transmission of emergency data, preventing exclusive use of a transmission medium by a specific node, and maximizing a packet processing rate. A method for controlling data transmission in a wireless network system including plural nodes comprises the following steps of: transmitting an RTS(Request To Send) packet from the first node to the second node within the wireless network system when data is emergency data(S130); when the data is general data, determining whether the amount of data accumulated in a buffer of the first node is larger than a preset threshold value, and if so, transmitting the RTS packet to the second node within the wireless network system(S125); receiving a CTS(Clear To Send) packet from the second node within the wireless network system(S135); performing data transmission from the first node to the second node(S140); starting the operation of a timer having a timeout value when the amount of the data accumulated in the buffer is smaller than the threshold value, when the CTS packet is not received, or when the data transmission is terminated(S150); determining whether the first node receives the RTS packet from nodes including the second node(S155); and making the CTS packet received to the node which has transmitted the RTS packet when RTS packet is received, and receiving the data from the node which has transmitted the RTS packet before jumping to the above fifth step when the reception of data is completed(S160,S140).

Abstract translation: 提供一种用于控制包括多个节点的无线网络系统中的数据传输的方法，以及使用该节点的传感器网络和记录介质，以配置每个节点的缓冲器，以便根据阈值调整占空比，并且 数据的优先级，从而根据网络流量的变化提高能量效率，保证应急数据的优先传输，防止特定节点对传输介质的独占使用，以及最大化数据包处理速率。 一种用于在包括多个节点的无线网络系统中控制数据传输的方法包括以下步骤：当数据是紧急数据时，从无线网络系统中的第一节点向第二节点发送RTS（请求发送请求）分组（S130） ; 当数据是通用数据时，确定累积在第一节点的缓冲器中的数据量是否大于预设阈值，如果是，则将RTS分组发送到无线网络系统内的第二节点（S125）; 从无线网络系统内的第二节点接收CTS（清除发送）分组（S135）; 执行从第一节点到第二节点的数据传输（S140）; 当所述缓冲器中累积的数据量小于所述阈值时，当所述CTS分组未被接收时，或者当所述数据传输结束时，开始具有超时值的定时器的操作（S150）; 确定所述第一节点是否从包括所述第二节点的节点接收所述RTS分组（S155）; 并且当接收到RTS分组时，将CTS分组接收到已经发送了RTS分组的节点，并且在数据接收完成之前跳转到上述第五步骤之前已经发送了RTS分组的节点的数据接收（S160 ，S140）。

公开(公告)号：KR100717962B1

公开(公告)日：2007-05-14

申请号：KR1020050064109

申请日：2005-07-15

Applicant: 전자부품연구원

Inventor： 김호년 ,  이재용 ,  양승운 ,  유준재 ,  원광호 ,  김재호

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04W74/0816 ,  H04W4/90 ,  H04W28/14 ,  H04W76/50 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/26

Abstract: The present invention is related to a method for controlling data transmission in a wireless network system including a plurality of nodes. In accordance with the present invention, a duty cycle of a buffer of a node is configured to be adjusted according to a threshold value and a priority of a data to improve energy efficiency according to a variation of a network traffic, guarantee a prioritized transmission of an emergency data, prevent exclusive use of transmission medium by a certain node, and maximize a packet process rate.