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TitleAn enhanced reservation-based MAC Protocol for IEEE 802.15.4 networks
Author(s)Afonso, José A.
Silva, Hélder D.
Macedo, Pedro
Rocha, Luís A.
KeywordsWireless sensor networks
Medium access control
Quality of service
Issue dateApr-2011
CitationAFONSO, José A. [et. al.] - An enhanced reservation-based MAC Protocol for IEEE 802.15.4 Networks. “Sensors” [Em linha]. 11:4 (Abr. 2011) 3852-3873. [Consult. 8 Abril 2011]. Disponível em WWW:<URL:>. ISSN 1424-8220.
Abstract(s)The IEEE 802.15.4 Medium Access Control (MAC) protocol is an enabling standard for wireless sensor networks. In order to support applications requiring dedicated bandwidth or bounded delay, it provides a reservation-based scheme named Guaranteed Time Slot (GTS). However, the GTS scheme presents some drawbacks, such as inefficient bandwidth utilization and support to a maximum of only seven devices. This paper presents eLPRT (enhanced Low Power Real Time), a new reservation-based MAC protocol that introduces several performance enhancing features in comparison to the GTS scheme. This MAC protocol builds on top of LPRT (Low Power Real Time) and includes various mechanisms designed to increase data transmission reliability against channel errors, improve bandwidth utilization and increase the number of supported devices. A motion capture system based on inertial and magnetic sensors has been used to validate the protocol. The effectiveness of the performance enhancements introduced by each of the new features is demonstrated through the provision of both simulation and experimental results.
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AccessOpen access
Appears in Collections:DEI - Artigos em revistas internacionais

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