Conference Publication Details
Mandatory Fields
Cano C.;Malone D.
IEEE ISPLC 2014 - 18th IEEE International Symposium on Power Line Communications and Its Applications
Performance evaluation of the priority resolution scheme in PLC networks
Optional Fields
Access categories Homeplug IEEE 1901 Power line communications Priority resolution QoS
Power Line Communications standards, such as Homeplug and IEEE 1901, aim to provide strict channel access prioritisation in CSMA/CA mode. This is achieved by making lower-priority access categories postpone contention when packets belonging to categories with higher priority are pending for transmission. For this purpose, specific slots in which stations advertise the priority of the current packets to be transmitted are allocated. However, they are only present after the occurrence of successful frame exchanges. Thus, in lightly loaded conditions as well as after channel errors or collisions, the priority resolution mechanism is not employed. In this work, we evaluate the implications of these features on the QoS experienced by each access category. Results show the network provides a complex performance behaviour caused by the interdependence of higher-priority traffic contention and lower-priority traffic preemption. © 2014 IEEE.
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