公开(公告)号：KR1020080059897A

公开(公告)日：2008-07-01

申请号：KR1020060133815

申请日：2006-12-26

Applicant: 한국정보통신대학교 산학협력단

Inventor： 최광진 ,  최준균 ,  이영로 ,  하상용 ,  김진철 ,  조용현 ,  류지연

IPC: H04L12/26 ,  H04L12/841

CPC classification number: H04L47/18 ,  H04L43/0858 ,  H04L43/106

Abstract: A method for measuring an end-to-end available bandwidth using a time stamp message and a one-way delay time difference in an IP(Internet Protocol) packet network is provided to exactly measure an end-to-end available bandwidth as an origination point and a destination point transmits and receives packets and messages after inserting a new header field next to an IP header. An origination point(201) transmits at least one packet having a specific bit rate to a destination point(203). Receiving the packet, the destination point measures a change in one-way delay time, based on the time stamp message and bit rate contained in the packet. Using the measured one-way delay time, the destination point estimates an available bandwidth, inserts the estimated available bandwidth in the packet, and transmits it to the origination point. Based on the estimated available bandwidth, the origination point adjusts the bit rate of the packet and retransmits it to the destination point.

Abstract translation: 提供了一种使用时间戳消息和IP（因特网协议）分组网络中的单向延迟时间差来测量端到端可用带宽的方法，以精确地测量端到端可用带宽作为发起 点和目的地点在IP头之后插入新的头字段之后发送和接收分组和消息。 发起点（201）将具有特定比特率的至少一个分组发送到目的地点（203）。 根据分组中包含的时间戳消息和比特率，接收分组，目的地点测量单向延迟时间的变化。 使用测量的单向延迟时间，目的地点估计可用带宽，将估计的可用带宽插入到分组中，并将其发送到始发点。 基于估计的可用带宽，起始点调整分组的比特率并将其重新发送到目的地点。

公开(公告)号：KR1020080061055A

公开(公告)日：2008-07-02

申请号：KR1020060135834

申请日：2006-12-28

Applicant: 한국정보통신대학교 산학협력단

Inventor： 강대희 ,  한영태 ,  박홍식 ,  이영로 ,  하상용 ,  김진철 ,  조용현 ,  류지현

IPC: H04L12/24 ,  H04L12/28

CPC classification number: H04L47/2483 ,  H04L43/026 ,  H04L43/18 ,  H04L69/22

Abstract: A system and a method for identifying a P2P application service are provided to maintain a network safely and effectively by finding an abnormal traffic like a worm virus in managing the network. A method for identifying a P2P application service comprises the following several steps. A flow generator collects IP packets and generates a flow(S200). A port number based identifier identifies a P2P application service on the basis of the port number by using the generated flow(S201). If the P2P application service is identified(S202), an checking unit checks the identified application service(S203). If the application service is not correctly identified(S204) or the P2P application service is not identified in the step S202, a payload based identifier identifies the P2P application service on the basis of the payload(S205). If the P2P application service identified on the basis of the payload(S206) or the identification is checked in the step S204, a SET table generator generates a SET table by using the identified application service flow(S207). A SET table based identifier identifies a P2P application service by using the SET table with respect to a flow not identified via the port number based identification or the payload based identification(S208).

Abstract translation: 提供了一种用于识别P2P应用服务的系统和方法，以通过在管理网络中发现像蠕虫病毒这样的异常流量来安全有效地维护网络。 一种用于识别P2P应用服务的方法包括以下几个步骤。 流发生器收集IP包并产生流（S200）。 基于端口号的标识符通过使用生成的流程，基于端口号识别P2P应用服务（S201）。 如果P2P应用服务被识别（S202），则检查单元检查所识别的应用服务（S203）。 如果在步骤S202中没有正确识别应用服务（S204）或P2P应用服务，则基于有效载荷的标识符基于有效载荷来识别P2P应用服务（S205）。 如果在步骤S204中检查基于有效载荷识别的P2P应用服务（S206）或识别，则SET表生成器通过使用识别的应用服务流程生成SET表（S207）。 基于SET表的标识符通过使用关于未通过基于端口号的识别或基于有效载荷的标识识别的流的SET表来识别P2P应用服务（S208）。