TELKOMNIKA Telecommunication, Computing, Electronics and Control
Dynamic bandwidth allocation algorithm for long reach passive optical network

TELKOMNIKA Telecommunication, Computing, Electronics and Control
Dynamic bandwidth allocation algorithm for long reach passive optical network

Dynamic bandwidth allocation
Long reach passive optical
network
Quality of service

Next generation broadband access networks are gaining more interests from
many key players in this field. The demands for longer reach and higher
bandwidth are among the driving factors for such network as it can reach wider
area up to 100 km, even beyond; has enhanced bandwidth capacity and
transmission speed, but with low cost and energy consumption. One promising
candidate is long reach passive optical network, a simplified network with
reduced number of network elements, equipment interfaces, and even nodes;
which leads to a significant reduction in the network’s capital expenditure and
operational expenditure. Outcome of an extended reach often results in
increased propagation delay of dynamic bandwidth allocation messages
exchange between the optical line terminals and optical network units, leading
to the degradations of bandwidth allocation and quality of service support.
Therefore, an effective bandwidth allocation algorithm with appropriate
service interval setup for a long reach network is proposed to ensure the delay
is maintained under ITU-T G.987.1 standard requirement. An existing
algorithm is improved in terms of service interval so that it can perform well
beyond 100 km. Findings show that the improved algorithm can reduce the
mean delay of high priority traffic classes for distance up to 140 km.

Siti Hasunah Mohammad, Nadiatulhuda Zulkifli, Sevia Mahdaliza Idrus

http://journal.uad.ac.id/index.php/TELKOMNIKA

Nov 25, 2020

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