Energy Evaluation of PMCMTP for Large-Scale Wireless Sensor Networks

Abstract

One of the major concerns in wireless sensor networks (WSNs) is improving the network lifetime. This paper addresses the problem of energy saving in an IEEE 802.15.4a large-scale full mesh WSNs based on UWB technology. It presents a three-tiered network architecture to facilitate resource sharing and to ensure load and energy balancing. With a particular focus on medium access control (MAC) protocols, we propose a multi-channel MAC protocol, Prioritized Multi-Channel MultiTime slot MAC protocol (PMCMTP), that due to its intelligent management of spectrum resource and time slots, can simultaneously improve energy efficiency and network quality-of-service (QoS). To prove energy efficiency and QoS support of PMCMTP, we implement it in a discrete-time simulator built in JAVA. Simulations results show that PMCMTP succeeds to save energy and to enhance network QoS with a low overhead.

A prioritized multi-channel multi-time slot MAC protocol for large-scale wireless sensor networks

“…Although in practice the coverage zone of a sensor device is neither an hexagon nor a perfect circle, there are procedures and mechanisms [12] that ensure the adjustments of the model during network deployment by means of experimental test of measurements. To benefit completely from advantages offered by the UWB technology, we treated, in [13], the problem of UWB-channels sharing between PANs and we propose, in the following section, a new MAC protocol ensuring an efficient multi-channel and multi-time slot sharing inside PANs.…”

“…According to PAN's duty cycle and available channel frequencies, each PAN coordinator can benefit simultaneously from several data communication channels. The detailed description of UWB-channels (Control and data channels) sharing between PANs is out of scoop of this paper, so for more details, one can refer to [13].…”

“…We have implemented PMCMTP in a discrete-time simulator built in JAVA and based on some functionalities defined by Prowler simulator [14] with the support of the network architecture proposed in [11] and the spectrum sharing scheme detailed in [13]. In this section, we propose to evaluate the performance of PMCMTP.…”

Control and data channels allocation for Large-Scale UWB-based WSNs

“…To cover the entire network by control traffic without suffering from co-channel interference, we just need 4 different channel frequencies. In [14], we propose an analytical proof to generalize this result for networks of more than four adjacent cells.…”

“…To cover the entire network from communication traffic without suffering from co-channel interference, we just need 3 different channel frequencies. In [14], we propose an analytical proof to generalize this result for networks of more than three adjacent cells. To ensure dynamic data channel allocation, our approach consists in taking advantage of data channel allocation method, previously detailed, but with the exploitation of the duty cycle's information of PANs.…”