Modeling a wireless network for International Space Station

Abstract

-This paper describes the application of wireless local area network (LAN) simulation modeling methods to the hybrid LAN architecture designed for supporting crew-computing tools aboard the International Space Station (JSS). These crew-computing tools, such as wearable computers and portable advisory systems, will provide crew members.with real-time vehicle and payload status information and access td digital technical and scientific libraries, significantly enhancing human capabiIities in space.' A wireless network, therefore, will provide wearable computers and remote instruments with, ' the high performance computational power needed by' next-generation "intelligent" software applications; . Wireless network performance in such simulated environments is characterized by the sustainable throughput .of data under different ..kf%c conditions. This data will be used 'to help plan. the ddition of more accc §a points supporting new modules .and .more .nodes for' i m network capacity as the ISS growsi

Wireless‐SpaceWire bridge for intrasatellite transmissions

“…Alena et al 7 model a wireless local area network (WLAN) for the International Space Station (ISS), presenting the advantages (i.e., support for mobility and multiple payloads simultaneously, simplicity in upgrading, ease of deployment, less mass) and the challenges (i.e., high computational power required by the software applications).…”

“…[2][3][4][5] However, available UWB radio transceivers (i.e., DecaWave DWM1000 transceiver) may provide theoretically a maximum nominal data rate of 27 Mbps (which in practical solutions barely reached 6.8 Mbps), 6 while the wired SpaceWire (SpW) links to be replaced provide up to 200 Mbps and support high-throughput applications. Several studies [7][8][9][10][11][12][13][14] highlight the advantages of using IEEE 802.11 in highly reflective environments supporting the idea that it may be used for communications in extreme conditions such as below-deck spaces on naval vessels, industrial facilities, underwater vehicles, and spacecrafts, while providing high-throughput. Within the IEEE 802.11 family, we consider IEEE802.11ac 15 to be a suitable candidate for wireless intrasatellite communications because of its major advantages: (1) wider radio frequency (RF) channel bandwidth, (2) more spatial streams using Multiple Inputs Multiple Outputs (MIMO) technique, and (3) higher data rates using Orthogonal Frequency Division Multiplexing (OFDM) transmissions.…”