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Abstract
The development of Software Defined Networking (SDN) provides a completely new design concept for construction of airborne network. For the problem of scalability of control plane in aeronautic swarm, the problem of multi-controller deployment under hybrid hierarchy is studied. First, to realize flexible control of the underlying transport nodes, the local controller resource pool is defined by extending the control hierarchy. Then, to reduce the time complexity and realize rapid deployment of local controllers, the traditional controller deployment is transformed into two steps: sub-domain partitioning and intra-domain deployment. A sub-domain partitioning algorithm based on node density sorting and an in-domain controller deployment algorithm based on improved Pareto simulated annealing are developed. Experimental results show that the proposed algorithm can guarantee load balancing of the controller, and effectively reduce the average delay and average loss rate of network control link. Compared with existing algorithms, the algorithm is more suitable for aeronautic swarm controller deployment in large-scale and dynamic topology environment with less time complexity. © 2018, Press of Chinese Journal of Aeronautics. All right reserved.
... Network delay principally consists of transmission delay, propagation delay, processing delay, and queuing delay. In the application scenario with large-scale distributed SD-ATSN, the transmission delay and queuing delay are comparatively smaller than the processing delay and propagation delay [32]. erefore, the communication overhead of the SD-ATSN is chiefly determined by the propagation delay on the round-trip data path. ...
... For example, GEO in the spatial domain and the AEW in the airborne domain can detect, locate and track the target in a large range. Nevertheless, these propagation delays which interact with the domain edge nodes will be too high [32]. In this section, t is defined using only the time on the data roundtrip path. ...
As combat scales up and weapons become more intelligent, airborne networks (AN) must facilitate high-precision communications. This means that the airborne network should have communication capability with minimum delay, low jitter, and high reliability, and this new type of AN is called an airborne time-sensitive network (ATSN). A prerequisite to guarantee the above communication capability is to have a high precision time synchronization protocol. To plug this gap, we have designed a software-defined airborne time-sensitive network (SD-ATSN) architecture based on the benefits of software-defined centralization and flexibility. It supports our proposed all-domain fusion-based time synchronization protocol (AF-TSP) to support precise time synchronization between ATSN platforms. In AF-TSP, we innovatively propose an all-domain (land, sea, air, and space) master clock hot standby mechanism to cope with the existing instability and poor robustness in AN. In the key problem of the master clock election, we first completed a rough election utilizing improved K-Means++. Subsequently, on top of the rough election, we inserted a mixed mutation operator to improve the convergence of the multiobjective optimization algorithm No Dominant Sorting Genetic Algorithm-II (NSGA-II). The control delay, clock accuracy, and path reliability coefficient are the optimization objectives for selecting the appropriate master clock. Simulation results demonstrate that our protocol has advantages in terms of synchronization precision, communication delay, and network robustness.
... ATNs have received significant attention due to the increasing demands of dynamically updated air-combat missions. Unfortunately, current ATNs possess a tightly coupled and vertically integrated architecture, which causes complex and rigid network management and configuration and can only fulfill limited demands of resource allocation for customized air-combat missions in the limited military context [2][3][4]. Therefore, there has to be efficient network resource allocation to flexibly provide differentiated network services in the expanding network size for developing ATNs. ...
The evolution of airborne tactical networks (ATNs) is impeded by the network ossification problem. As a solution, network virtualization (NV) can provide a flexible and scalable architecture where virtual network embedding (VNE) is a key part. However, existing VNE algorithms cannot be optimally adopted in the virtualization of ATN due to the complex interference in air-combat field. In this context, a highly reliable VNE algorithm based on the transmission rate for ATN virtualization (TR-ATVNE) is proposed to adapt well to the specific electromagnetic environment of ATN. Our algorithm coordinates node and link mapping. In the node mapping, transmission-rate resource is firstly defined to effectively evaluate the ranking value of substrate nodes under the interference of both environmental noises and enemy attacks. Meanwhile, a feasible splitting rule is proposed for path splitting in the link mapping, considering the interference between wireless links. Simulation results reveal that our algorithm is able to improve the acceptance ratio of virtual network requests while maintaining a high revenue-to-cost ratio under the complex electromagnetic interference.
... The internal link of enterprise information construction is connected by CAN bus, and P82C250 chip is used as CAN bus transceiver in the design [6]. P82C250 is the interface between the CAN protocol controller and the physical bus. ...
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