An Explicit GTS allocation algorithm for IEEE 802.15.4


Autoria(s): Chen, Jianxin; Ferreira, Luis; Tovar, Eduardo
Data(s)

07/02/2014

07/02/2014

2011

Resumo

The IEEE 802.15.4 standard provides appealing features to simultaneously support real-time and non realtime traffic, but it is only capable of supporting real-time communications from at most seven devices. Additionally, it cannot guarantee delay bounds lower than the superframe duration. Motivated by this problem, in this paper we propose an Explicit Guaranteed time slot Sharing and Allocation scheme (EGSA) for beacon-enabled IEEE 802.15.4 networks. This scheme is capable of providing tighter delay bounds for real-time communications by splitting the Contention Free access Period (CFP) into smaller mini time slots and by means of a new guaranteed bandwidth allocation scheme for a set of devices with periodic messages. At the same the novel bandwidth allocation scheme can maximize the duration of the CFP for non real-time communications. Performance analysis results show that the EGSA scheme works efficiently and outperforms competitor schemes both in terms of guaranteed delay and bandwidth utilization.

Identificador

DOI: 10.1109/ETFA.2011.6059020

978-1-4577-0016-3

978-1-4577-0017-0

1946-0740

http://hdl.handle.net/10400.22/3780

Idioma(s)

eng

Publicador

IEEE

Relação

Emerging Technologies & Factory Automation (ETFA);

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6059020

Direitos

closedAccess

Tipo

article