Middleware for the SUNSAT field station

[摘要] ENGLISH ABSTRACT:SRMA currently used on the SUNSAT field station is an effective MAC layer protocol but lacksseveral features. Sufficient support for flexible communication, acknowledgement of individualdata packets, simultaneous communication of multiple instances from a higher layer over asingle underlying layer, and a robust FTP procedure to transfer large amounts of data are some ofthe features that the SUNSA T field station should cater for.ORBCOMM, GSM and WAP implementations are discussed. Some features from theseimplementations that are useful in the LEO communication environment are designed into anadditional layer of software. This additional layer, called middleware, is proposed and usesSRMA services to deliver store-and-forward services. It supports high volumes of shorttransactions and session suspend and resume facilities between the SUNSA T satellite and fieldstation.Keywords: SUNSAT, Communication, Field station, WAP, GSM, ORBCOMM

[发布机构] Stellenbosch University