Abstract
As outlined in the 3Gpp Release 16, 5G satellite access is important for 5G network development in the future. A terrestrial-satellite network integrated with 5G has the characteristics of low delay, high bandwidth, and ubiquitous coverage. A few researchers have proposed integrated schemes for such a network; however, these schemes do not consider the possibility of achieving optimization of the delay characteristic by changing the computing mode of the 5G satellite network. We propose a 5G satellite edge computing framework (5GsatEC), which aims to reduce delay and expand network coverage. This framework consists of embedded hardware platforms and edge computing microservices in satellites. To increase the flexibility of the framework in complex scenarios, we unify the resource management of the central processing unit (CPU), graphics processing unit (GPU), and field-programmable gate array (FPGA); we divide the services into three types: system services, basic services, and user services. In order to verify the performance of the framework, we carried out a series of experiments. The results show that 5GsatEC has a broader coverage than the ground 5G network. The results also show that 5GsatEC has lower delay, a lower packet loss rate, and lower bandwidth consumption than the 5G satellite network.
Highlights
Fifth-generation (5G) Generation Communication Networks will be a global game changer from technological, economic, societal, and environmental perspectives [1]
Considering the low latency requirements of 5G networks and the limited bandwidth resources of satellite networks, in this paper we propose a 5G Satellite edge computing framework (5GsatEC)
Mozaffari et al proposed a concept of three-dimensional (3D) cellular networks and a framework for network planning for drone-BSs as well as latency-minimal cell association for drone user equipment [29]
Summary
Fifth-generation (5G) Generation Communication Networks will be a global game changer from technological, economic, societal, and environmental perspectives [1]. Terrestrial 5G communication requires ground base station support. In the development of traditional satellite communication, there is no unified framework and service interface, resource utilization is low, and computing power is poor. Satellites need to access ground computing centers to transmit data, which takes up a large amount of bandwidth and causes a high delay. In order to solve the delay problems, the ground 5G network uses Mobile Edge Computing (MEC) to place part of the computing resources at the edge of the network, which can effectively save bandwidth and reduce delay [12,13,14,15,16]. Considering the low latency requirements of 5G networks and the limited bandwidth resources of satellite networks, in this paper we propose a 5G Satellite edge computing framework (5GsatEC).
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