Heterogeneous network scheduling method and device for rail transit and gateway equipment

Abstract

The invention discloses a heterogeneous network scheduling method for rail transit, and the method comprises the steps: calculating the network bandwidth of a rail train at a current moment through abandwidth channel QoS index relation equation formed through training and according to QoS indexes collected in real time, and continuously maintaining and calibrating a network bandwidth heat map along a rail according to the calculated network bandwidth; and then calculating the running position of the train at the next moment according to the current position and the current running speed of the train, and finally directly reading the network bandwidths which can be provided by different communication networks when the train runs to the position point at the next moment from the network bandwidth heat map so as to make a network switching and load balancing strategy in advance. According to the method, the future network state of the train is directly read from the network bandwidth heat map, compared with a traditional method for predicting the future network state of the high-speed train through the current network state, the method is more accurate, the routing strategy generatedin advance is more scientific, and the stability of train network connection is guaranteed.

Description

technical field [0001] The present invention specifically relates to a heterogeneous network scheduling method, in particular to a heterogeneous network scheduling method, device and gateway device for rail transit. Background technique [0002] At present, vehicle-mounted gateway equipment including rail transit mainly provides Internet services for passengers through satellite communication and connection to the public network provided by mobile operators. However, due to the complex network environment along the train, the switching and load balancing between different network standards and different network channels affect the quality of train-ground communication services. [0003] Patent CN201310121589.6 discloses a communication system and method applied to vehicles. The communication gateway provided by it is composed of CPE (a mobile signal access equipment) connected to the operator's public network and satellite ground equipment connected to communication satellit...

AI Technical Summary

Problems solved by technology

However, this network switching method is not suitable for high-speed trains. When the train is running at high speed, the wireless network signal strength obtained by the communication system in the previous second has changed in the next second, so the network status obtained at the current moment cannot represent the next One second of actual network status, the resulting network switching strategy lags significantly, which may cause network congestion and data packet loss, affecting passengers' online experience

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