Mobility-Aware Joint Service Placement and Routing in Space-Air-Ground Integrated Networks

Abstract

People desire to be connected, no matter where they are. Recently, providing Internet access to on-board passengers has received a lot of attention from both industry and academia. However, in order to guarantee an acceptable Quality of Service (QoS) for the passenger services with low incurred cost, the path to route the services, as well as the datacenter (DC) to deploy the services should be carefully determined. This problem is challenging, due to different types of Air-to-Ground (A2G) connections, i.e., satellites and Direct Air-To-Ground (DA2G) links. These A2G connection types differ in terms of cost, bandwidth, and latency. Furthermore, due to the flights' movements, it is important to consider adapting the service location accordingly. In this work, we formulate two Mixed Integer Linear Programs (MILPs) for the problem of Joint Service Placement and Routing (JSPR): i) Static (S-JSPR), and ii) Mobility-Aware (MA-JSPR) in Space-Air-Ground Integrated Networks (SAGIN), with the objective of minimizing the total cost. We compare S-JSPR and MA-JSPR using comprehensive evaluations in a realistic European-based SAGIN. The obtained results show that the MA-JSPR model, by considering the future flight positions and using a service migration control, reduces the long-term total cost notably. Also, we show S-JSPR benefits from a low time-complexity and it achieves lower end-to-end delays comparing to MA-JSPR model.

FMNISCF: Fine-Grained Multi-Domain Network Interconnection Security Control Framework

“…For the language element A − B of the security policy script, it can be translated into the source IP interval, and the destination IP interval of the language element in the security rules script respectively. It can be written as [1][2][3]5,7,10], [6,[8][9]. Similarly, a − c can be translated into [1][2][3]5,7,10], [10,12].…”

“…In recent years, the complex network environment represented by the integrated air-ground network [1,2], IOT [3,4], and the complex private network [5,6] has developed rapidly, which has brought great convenience to people's daily life and also generated a lot of security related problems, especially those dealing with data security. Therefore, as an advanced technology to protect the legitimate access to data, the research on access control technology in complex network environment is particularly necessary.…”

Design and Evaluation of Reconfigurable SDN LEO Constellations

“…For instance, given the high coverage and relatively low delays that Low Earth Orbit (LEO) megaconstellation can provide, a potential backhauling solution can be initiated [4]. Thus, satellite networks can support terrestrial networks to fulfill the requirements of high data rates and ubiquity, including offloading or balancing the traffic in dense populated areas [5].…”

Coupling VNF Orchestration and SDN Virtual Network Reconfiguration

“…Unfortunately, the benefits can come with a prize: the observed end-to-end delay might increase due to the function softwarization (because of additional server virtualization layers) or due to placing functions at server locations that promise low resource costs but are far away from users [5]. Besides, updating virtual networks at runtime can lead to service 978-1-7281-0568-0/19/$31.00 ©2019 IEEE interruptions or unacceptable control plane latencies [6].…”