Multi-station multi-machine air-ground downlink time slot space division multiplexing distribution system

Abstract

The multi-station multi-machine air-ground downlink time slot space division multiplexing distribution system disclosed by the invention has the advantages of high throughput, high service quality guarantee and high transmission reliability. According to the technical scheme, in a multi-station multi-machine air-ground downlink, each air platform locates the real-time position of the platform, distributes the time slot requirement of the platform and the position of the platform to a ground station, and transmits the time slot requirement and the position of the platform to a network management station; the ground station transmits a received signal level to the network management station to gather time slot requirements and received level information of each air platform and platform position information of all the air platforms, space division multiplexing time slot distribution is executed according to the position information of the ground station and the air platforms, a proper time slot is selected for each air platform for space division multiplexing, and a time slot allocation result is generated, a time slot allocation message is dynamically distributed to each ground station, the time slot allocation result is analyzed by each ground station, the time slot allocation result is forwarded to each air platform according to an information interaction process, and the time slot allocation result is analyzed by each air platform.

Description

technical field [0001] The invention relates to a time slot space division multiplexing (SDM) allocation method suitable for multi-station multi-device air downlink. Background technique [0002] With the rapid development of aviation technology and the continuous improvement of UAV performance, UAV systems have been widely used in various industries. Through the UAV multi-station and multi-machine system, the ground station can complete the tracking, control, measurement, and positioning of multiple UAVs, and the reliability of the air-ground downlink can be improved through multi-ground station reception, thus effectively expanding the scope of the system. , to realize functions such as remote control, telemetry, high-speed data transmission, and high-speed downloading of electronic investigation information. Usually, the UAV system consists of two types of platforms, the ground station and the UAV aerial platform. Early UAV systems were mainly single-station stand-alone...

AI Technical Summary

Problems solved by technology

The main disadvantage of competing for occupancy is that when multiple members compete for a certain time slot at the same time, transmission collisions will occur, thereby reducing the throughput of the network. Therefore, this method is usually not suitable for larger-scale networks.

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