Named data network transmission control method and system

Abstract

The invention discloses a named data network transmission control method and system. The method comprises the steps of determining speed and determining a forwarding strategy. According to the step of determining the speed, a requester sends a request packet to a named data network, when the network feeds back a data packet corresponding to the request packet to the requester, a router estimates accurate congestion information in the network and writes the accurate congestion information into the data packet, the maximum sending rate of the request packet of the flow is calculated according to the accurate congestion information and the estimated value of the data packet, and follow-up request packets are sent with the speed. According to the step of determining the forwarding strategy, when the network feeds back a data packet corresponding to the request packet to the requester, the router further calculates available values of all forward interfaces corresponding to a flow path according to the accurate congestion information in the network, and the available values are used for selecting the interface with the maximum available value in a self-adaption mode when the request packet is forwarded. Therefore, the network resource utilization rate can be improved effectively, packet loss probability can be reduced, and data flow completion time can be shortened.

Description

technical field [0001] The invention relates to the field of computer networks, in particular to a named data network transmission control method and system based on accurate congestion information. Background technique [0002] Named Data Networking (NDN, Named Data Networking) is a new future Internet architecture. Different from the user-to-user (host-to-host) transmission method in TCP / IP, the named data network regards the network as a content resource pool. When the requester (Consumer) needs to request a certain content, it sends a request packet to the network. , when the network finds the information corresponding to the request packet, the provider (Producer) will return the data packet corresponding to the request packet to the requester. The rate at which user request packets are sent will directly affect the rate at which data packets are returned by the network, thereby affecting the utilization of network resources. The forwarding table in TCP / IP is determin...

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Problems solved by technology

[0006] In order to solve the above problems, the purpose of the present invention is to provide a named data network transmission control method and system, which can solve the problem that more network resources will be wasted by using the traditional sliding window method in the named data network, and use accurate congestion information to solve the problem. Network congestion, transmission control method for improving network resource utilization

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