Named data network forwarding method based on flow control

A named data network and forwarding method technology, which is applied in the field of flow control-based named data network forwarding, can solve the problems of long query time for interest packets and data packets, complex consumer operations, and long query time for data packet routing, etc., to achieve The effect of high packet forwarding rate and fast forwarding speed

Active Publication Date: 2020-12-04
北京同创神州航天科技有限公司
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  • Summary
  • Abstract
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Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a named data network forwarding method based on flow control, which solves the problem of complex consumer operations in the current NDN data packet routing scheme, and the time required for table lookup of interest packets and data packets in routing nodes is relatively long. Long, the problem that the data packet routing query time is long

Method used

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  • Named data network forwarding method based on flow control
  • Named data network forwarding method based on flow control
  • Named data network forwarding method based on flow control

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Embodiment

[0028] Such as Figure 1-4 As shown, the embodiment of the present invention provides a named data network forwarding method based on flow control, including the following specific steps:

[0029] S1. Select field addition: add the interest packet and data packet format of the path field such as figure 2 As shown in Fig. 1, the consumer first assigns a transmission sequence number to the Interest packet, and then the producer node extracts the transmission sequence number field and the routing information field of the Interest packet and saves them in the selection field of the data packet.

[0030] S2. The routing node establishes a flow control table (SCT): after the data packet arrives at the routing node, a flow control table is established according to the selection field carried by the data packet. The specific content of the flow control table is as follows image 3 As shown, it mainly includes the transmission sequence number, sequence number, and name of the data pa...

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Abstract

The invention provides a named data network forwarding method based on flow control, and relates to the technical field of computer network data communication. The named data network forwarding methodbased on flow control comprises the following specific steps that S1, when a consumer applies for streaming media data or a large file, a streaming interest packet format is adopted, a streaming transmission sequence number (TSN) is allocated to an interest packet, and then the interest packet is sent out; S2, after arriving at an on-way routing node, if an intermediate routing node has the cachecontent matched with the transmission sequence number, the requested content is directly returned by the intermediate routing node; and if the intermediate node has no corresponding content, the interest packet is forwarded. By adopting a data flow control mode, a transmission serial number and a serial number are allocated to a flow data packet, and a consumer only needs to send two interest packets: a request flow transmission connection establishment interest packet and a flow transmission start interest packet, so that a producer can send all flow data to the consumer packet by packet insequence, and all the data can be pulled back at a time.

Description

technical field [0001] The invention relates to the technical field of computer network data communication, in particular to a named data network forwarding method based on flow control. Background technique [0002] Named Data Network (NDN) is a new type of future network architecture. It transmits interest packets and data packets between consumers and producers, and maintains three built-in tables in each node for data transmission based on information sharing. With the characteristics of in-network caching, information sharing and native security, it has been applied in the field of Internet of Things. [0003] Data packets in NDN are divided into two types: interest packets and data packets. NDN routing nodes all have a cache function to cache data packets passing through the node for responding to future requests for the same data content. [0004] The NDN architecture adopts a receiver-driven communication mode. NDN performs data communication by sending interest pac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/741H04L12/833H04L29/08H04L45/74H04L47/31
CPCH04L45/54H04L47/31H04L67/06Y02D30/50
Inventor 李彤陈国桥党学峰柴登龙陈宁博鲍文彬
Owner 北京同创神州航天科技有限公司
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