Active Queue Management Method for Satellite Networks Based on Packet Size

A technology of active queue management and satellite network, which is applied in the field of active queue management of satellite network based on packet size, can solve problems such as dependence on buffer space size and unsatisfactory transient performance, and achieve improved link utilization, increased throughput, The effect of reducing jitter
CN104079498BActive Publication Date: 2017-07-18DALIAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV
Publication Date
2017-07-18

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Abstract

The invention discloses a satellite network active queue management method based on the packet size, which is characterized in that it comprises the following steps: S1: acquiring the packet size of just arrived packet data; S2: calculating the packet loss probability influence factor based on the packet size according to the packet size The value of the function; S3: calculate the packet loss probability pz applicable to the PID controller of the satellite network, calculate the total packet loss probability p of the router according to the value of pz and the packet loss probability influence factor function, set the size of the router cache as qlim, if q(k)>qlim, discard the packet data; if q(k)≀qlim, the probability of discarding the packet data is p; S4: put the undiscarded packets into the queue for queuing. The present invention calculates the total packet loss probability of the router according to the different packet sizes, that is, to achieve the purpose that larger packets have a smaller packet loss probability, and smaller packets have a larger packet loss probability, so as to protect larger packets. data pack.
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Description

technical field

[0001] The invention relates to the technical field of satellite communication, in particular to an active queue management method of a satellite network based on packet size. Background technique

[0002] With the development of network communication, satellite network, as the extension of ground network, has attracted more and more attention of scholars. Due to the characteristics of large delay, high bit error rate, and asymmetric link bandwidth in satellite networks, the original congestion control algorithms on the ground cannot adapt to satellite networks, and active queue management must be applied to satellite networks. At present, many algorithms are involved in the active queue management method proposed by many domestic and foreign scholars. The main idea is to detect the occurrence of congestion in advance, and randomly discard packets (or send a congestion message to the source node) before network congestion occurs. to avoid congestion. [000...

Claims

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