A Mac Protocol Implementation for Wireless Sensor Network
IEEE 802.15.4 is an important standard for Low Rate Wireless Personal Area Network (LRWPAN). The IEEE 802.15.4 presents a flexible MAC protocol that provides good efficiency for data transmission by adapting its parameters according to characteristics of different applications. In this research work...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Computer Networks and Communications |
| Online Access: | http://dx.doi.org/10.1155/2015/697153 |
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| _version_ | 1832556517843271680 |
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| author | Jamila Bhar |
| author_facet | Jamila Bhar |
| author_sort | Jamila Bhar |
| collection | DOAJ |
| description | IEEE 802.15.4 is an important standard for Low Rate Wireless Personal Area Network (LRWPAN). The IEEE 802.15.4 presents a flexible MAC protocol that provides good efficiency for data transmission by adapting its parameters according to characteristics of different applications. In this research work, some restrictions of this standard are explained and an improvement of traffic efficiency by optimizing MAC layer is proposed. Implementation details for several blocks of communication system are carefully modeled. The protocol implementation is done using VHDL language. The analysis gives a full understanding of the behavior of the MAC protocol with regard to backoff delay, data loss probability, congestion probability, slot effectiveness, and traffic distribution for terminals. Two ideas are proposed and tested to improve efficiency of CSMA/CA mechanism for IEEE 802.15.4 MAC Layer. Primarily, we dynamically adjust the backoff exponent (BE) according to queue level of each node. Secondly, we vary the number of consecutive clear channel assessment (CCA) for packet transmission. We demonstrate also that slot compensation provided by the enhanced MAC protocol can greatly avoid unused slots. The results show the significant improvements expected by our approach among the IEEE 802.15.4 MAC standards. Synthesis results show also hardware performances of our proposed architecture. |
| format | Article |
| id | doaj-art-519d0b04a9914fe6bff94ab6e72956f4 |
| institution | Kabale University |
| issn | 2090-7141 2090-715X |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Computer Networks and Communications |
| spelling | doaj-art-519d0b04a9914fe6bff94ab6e72956f42025-02-03T05:45:10ZengWileyJournal of Computer Networks and Communications2090-71412090-715X2015-01-01201510.1155/2015/697153697153A Mac Protocol Implementation for Wireless Sensor NetworkJamila Bhar0EµE Laboratory, Faculty of Science of Monastir, 5019 Monastir, TunisiaIEEE 802.15.4 is an important standard for Low Rate Wireless Personal Area Network (LRWPAN). The IEEE 802.15.4 presents a flexible MAC protocol that provides good efficiency for data transmission by adapting its parameters according to characteristics of different applications. In this research work, some restrictions of this standard are explained and an improvement of traffic efficiency by optimizing MAC layer is proposed. Implementation details for several blocks of communication system are carefully modeled. The protocol implementation is done using VHDL language. The analysis gives a full understanding of the behavior of the MAC protocol with regard to backoff delay, data loss probability, congestion probability, slot effectiveness, and traffic distribution for terminals. Two ideas are proposed and tested to improve efficiency of CSMA/CA mechanism for IEEE 802.15.4 MAC Layer. Primarily, we dynamically adjust the backoff exponent (BE) according to queue level of each node. Secondly, we vary the number of consecutive clear channel assessment (CCA) for packet transmission. We demonstrate also that slot compensation provided by the enhanced MAC protocol can greatly avoid unused slots. The results show the significant improvements expected by our approach among the IEEE 802.15.4 MAC standards. Synthesis results show also hardware performances of our proposed architecture.http://dx.doi.org/10.1155/2015/697153 |
| spellingShingle | Jamila Bhar A Mac Protocol Implementation for Wireless Sensor Network Journal of Computer Networks and Communications |
| title | A Mac Protocol Implementation for Wireless Sensor Network |
| title_full | A Mac Protocol Implementation for Wireless Sensor Network |
| title_fullStr | A Mac Protocol Implementation for Wireless Sensor Network |
| title_full_unstemmed | A Mac Protocol Implementation for Wireless Sensor Network |
| title_short | A Mac Protocol Implementation for Wireless Sensor Network |
| title_sort | mac protocol implementation for wireless sensor network |
| url | http://dx.doi.org/10.1155/2015/697153 |
| work_keys_str_mv | AT jamilabhar amacprotocolimplementationforwirelesssensornetwork AT jamilabhar macprotocolimplementationforwirelesssensornetwork |