Deep-space network routing method with QoS assurance

Abstract

The invention discloses a deep-space network routing method with a QoS (Quality of Service) assurance, and solves the problem in the prior art that deep-space network service requirements can not be satisfied. The method particularly comprises the following steps: acquiring all link information in the network at first, correcting the communication time slots, then bringing link transmission time delay and link transmission rate into consideration to calculate the transmission time slots, and finally, calculating the path time delay according to the path transmission time to select the minimal path as the optimal path. By adopting the method, the calculated and acquired path time delay is more accurate, the selected optimal path has the shortest time delay, and the QoS requirement for the time delay of the service can be satisfied while the service throughput is guaranteed; and the service transmission time can be set more reasonably, the data transmission blindness is small, the probability of false transmission due to disconnection of links when data is transmitted on the links is low, and the network performance is improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a deep space network routing method with Quality of Service (QoS) guarantee in the technical field of deep space communication network. The present invention can determine the link transmission time and select the path with the smallest time delay under the premise of ensuring the service throughput in the deep space network, thereby effectively improving the performance of the deep space network. Background technique [0002] The deep space communication network includes the communication network composed of space vehicles in the three major space activities of deep space exploration, satellite development and manned spaceflight. With the continuous development of technology, the cost of launching satellites and probes will decrease, and the future deep space communication system will adopt the form of network. For example, construct a satellite relay network around...

AI Technical Summary

Problems solved by technology

However, the shortcomings of this method are that, firstly, the impact of propagation delay on data transmission is not considered, resulting in the disconnection of the link during service transmission, resulting in transmission failure; secondly, the impact of link connection time and propagation delay on specific services is not considered. The impact of the selected path with the largest throughput has a large delay for the current service, and the QoS requirements of the service for the delay cannot be guaranteed.

Images