Token bucket algorithm-based satellite data ground transmission network flow control system

Abstract

The invention discloses a token bucket algorithm-based satellite data ground transmission network flow control system, which comprises a token generation module, a token placement module, a token bucket module, a data caching module, and a token request module, wherein the token generation module is used for generating tokens matched with a corresponding flow type according to a preset token arrival rate; the token bucket module comprises n token buckets for storing the tokens; the token bucket module places the generated tokens in corresponding token buckets according to a token placement strategy or discards the tokens when all the token buckets are full; the data caching module stores n flow types, and when any flow type is generated, the token request module sends data packets in the flow type according to a token request strategy or the data packets are stored in the data caching module when no tokens exist. Thus, real-time data can be preferentially sent, a bandwidth as large as possible can be ensured for non real-time data, the transmission performance is optimized, the transmission jitter is reduced, and the sending flow can be controlled as accurately as possible.

Description

technical field [0001] The invention belongs to the technical field of network flow control, and in particular relates to a satellite data ground transmission network flow control system based on a token bucket algorithm. Background technique [0002] In recent years, with the development of my country's space technology, more and more satellites are operating in orbit. With the increase in the number of satellites, the amount of satellite data that needs to be transmitted by satellite ground receiving stations has also increased rapidly. Satellite data is also divided into various types. Real-time data requires low transmission delay, and non-real-time data requires as large a bandwidth as possible. How to improve bandwidth utilization and meet the transmission requirements of various types of data has become an urgent problem to be solved. The current solution The solution includes suppressing the data sending rate in the specific application program and utilizing the band...

AI Technical Summary

Problems solved by technology

[0006] 1. The TC module cannot effectively control the data flow sent in the multi-network card environment

[0007] 2. The TC module sends the data in the queue according to the preset queue scheduling algorithm, which cannot effectively meet the needs of the traffic requiring low latency, and when the traffic requiring as large a bandwidth as possible is put into the low priority Even if the queues are used, the bandwidth requirements of this type of traffic cannot be met

[0008] Therefore, neither of these two solutions can well meet the flow control requirements of the satellite data ground transmission system

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