Inter-satellite network broadcast communication high-throughput network coding and transmission method

Abstract

The invention discloses an inter-satellite network broadcast communication high-throughput network coding and transmission method. The method comprises the steps of S1, if current time is not a sending time slot of a satellite, indicating that the satellite is in a receiving state and initializing a forwarding counter C for each frame of data locally, wherein the C is an element of a set {1, 2, 3,...}; S2, for the received frame of which forwarding counter is not 0 in the sending time slot, generating a coding packet based on all data by taking a frame as a unit through random linear network coding, and forwarding the coding packet and the current frame of data; S3, for the frame forwarded in the sending time slot, subtracting 1 by the corresponding counter; S4, carrying out linear equations calculation on the received same frame of data, thereby obtaining a complete frame of data; and S5 finishing the method. According to the method, the problem that according to a traditional flooding protocol, the network throughput is reduced due to the fact a great number of redundant data packets are sent is solved, the fact that the traditional flooding protocol is characterized in no feedback link and simple protocol is maintained, and direct upgrading can be carried out based on software of the traditional flooding protocol.

Description

technical field [0001] The invention relates to a high-throughput network coding transmission method for inter-satellite network broadcast communication, which relates to the field of satellite communication networks, in particular to an inter-satellite broadcast network for time division multiple access. Background technique [0002] With the improvement of satellite intelligence level, the inter-satellite link is added to the satellite to realize the transmission of data between satellites, and the antenna adopts a directional antenna, which can cover multiple satellites in the same constellation within its effective communication range. At present, under the condition of time-division multiple access, the broadcast communication of each satellite data in the constellation widely adopts the method of flooding, that is, all the data it receives is forwarded. The advantage of this method is that it is simple to control, does not require complex communication protocols, and c...

AI Technical Summary

Problems solved by technology

The advantage of this method is that it is simple to control, does not require complex communication protocols, and can realize the broadcast of satellite data on the entire network after a limited number of forwarding; The communication efficiency is low, and the communication rate is far from meeting the requirements of inter-satellite data broadcasting

Images