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Middleware for the SUNSAT field station
Thesis (MEng)--University of Stellenbosch, 2001.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867613813196455936 |
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| access_status_str | Open Access |
| author | Cardoza, Andrew Robert |
| author2 | Mostert, S. |
| author_browse | Cardoza, Andrew Robert Mostert, S. |
| author_facet | Mostert, S. Cardoza, Andrew Robert |
| author_sort | Cardoza, Andrew Robert |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng)--University of Stellenbosch, 2001. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/52338 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:42:06.574Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/52338 Middleware for the SUNSAT field station Cardoza, Andrew Robert Mostert, S. Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. SUNSAT Wireless Application Protocol (Computer network protocol) Global system for mobile communications Dissertations -- Electronic engineering ORBCOMM Theses -- Electronic engineering Thesis (MEng)--University of Stellenbosch, 2001. ENGLISH ABSTRACT: SRMA currently used on the SUNSAT field station is an effective MAC layer protocol but lacks several features. Sufficient support for flexible communication, acknowledgement of individual data packets, simultaneous communication of multiple instances from a higher layer over a single underlying layer, and a robust FTP procedure to transfer large amounts of data are some of the features that the SUNSA T field station should cater for. ORBCOMM, GSM and WAP implementations are discussed. Some features from these implementations that are useful in the LEO communication environment are designed into an additional layer of software. This additional layer, called middleware, is proposed and uses SRMA services to deliver store-and-forward services. It supports high volumes of short transactions and session suspend and resume facilities between the SUNSA T satellite and field station. Keywords: SUNSAT, Communication, Field station, WAP, GSM, ORBCOMM AFRIKAANSE OPSOMMING: Die SRMA pakketkommunikasie-protokol op SUNSA T se prototipe grondterminaal is voldoende om die oordrag van boodskappe oor die kommunikasieverbinding te reguleer. Dit is onvoldoende om fasiliteite soos kommunikasie van 'n aantal instansies in 'n hoër kommunikasie laag oor 'n enkele laer laag en om 'n robuuste data oordrag protokol vir groot hoeveelhede data van 'n grondterminaal te ondersteun. ORBCOMM, GSM en WAP stelsel toepassings word bespreek. Resultate wat spruit uit die drie toepassings word gebruik om kommunikasie in 'n lae wentelbaan kommunikasie omgewing te bevorder. 'n Bykomende sagteware laag, bekend as middle-ware, word aanbeveel om voorafgenoemde funksionaliteit mee te implimenteer. Die middle-ware gebruik die beskikbare dienste van die SRMA pakketkommunikasie-protokol om toegang te verkry na die kommunikasie kanaal. Sodoende kan hoë volumes kort transaksies, en sessie-stop en hervat fasiliteite 'n werklikheid gemaak word. Sleutelwoord: SUNS AT, Kommunikasie, grondterminaal, WAP, GSM, ORBCOMM 2012-08-27T11:34:57Z 2012-08-27T11:34:57Z 2001-12 Thesis http://hdl.handle.net/10019.1/52338 en_ZA Stellenbosch University 177 p. : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | SUNSAT Wireless Application Protocol (Computer network protocol) Global system for mobile communications Dissertations -- Electronic engineering ORBCOMM Theses -- Electronic engineering Cardoza, Andrew Robert Middleware for the SUNSAT field station |
| title | Middleware for the SUNSAT field station |
| title_full | Middleware for the SUNSAT field station |
| title_fullStr | Middleware for the SUNSAT field station |
| title_full_unstemmed | Middleware for the SUNSAT field station |
| title_short | Middleware for the SUNSAT field station |
| title_sort | middleware for the sunsat field station |
| topic | SUNSAT Wireless Application Protocol (Computer network protocol) Global system for mobile communications Dissertations -- Electronic engineering ORBCOMM Theses -- Electronic engineering |
| url | http://hdl.handle.net/10019.1/52338 |
| work_keys_str_mv | AT cardozaandrewrobert middlewareforthesunsatfieldstation |