Performance Improvement in Beacon-enabled LR-WPAN-based Wireless Sensor Networks
نویسندگان
چکیده
LR-WPANs have two types of networks: beacon–enabled and non-beacon-enabled networks. In beacon-enabled LR-WPANs, the high reliability of Beacon frame transmission is required because all transmissions is controlled by the in-formation in the Beacon frame. However, the process to handle the case for the beaconloss is not well-defined in the standard. In this paper, an enhanced protocol for the case when a Beacon frame is lost is proposed to improve network performances. The protocol allows a device not receiving a Beacon frame to keep transmit its pending frames only within the minimum period of CAP based on the previously received Beacon frame while the standard prevents the device from sending any pending frame during a whole superframe. By simulation and evaluations, the effectiveness of the proposed protocol on improving perfor-
منابع مشابه
A Comprehensive Performance Study of IEEE 802 . 15 . 4
IEEE 802.15.4 is a new standard uniquely designed for low rate wireless personal area networks (LRWPANs). It targets low data rate, low power consumption and low cost wireless networking, and offers device level wireless connectivity. We develop an NS2 simulator for IEEE 802.15.4 and conduct several sets of experiments to study its various features, including: (1) beacon enabled mode and non-be...
متن کاملAdmission control issues in 802.15.4 sensor clusters
Wireless sensor networks are expected to provide reliable event sensing at the network sink for the longest possible time. These requirements are somewhat conflicting, esp. in the case of networks that use medium access protocols based on the ubiquitous CSMA-CA mechanism, where collisions may substantially affect transmission efficiency and thus impair network lifetime. This is the case with be...
متن کاملSimulation study of IEEE 802.15.4 LR-WPAN for industrial applications
The IEEE 802.15.4 protocol has become the primary solution for many Low-Rate Wireless Personal Area Network (LR-WPAN) applications. This is especially the case for industrial sensor network applications such as automation control. We contribute to the better understanding of the protocol behavior by presenting a set of results of simulation experiments. Our results outline the capabilities of t...
متن کاملPerformance Improvement of IEEE 802.15.4 Beacon-Enabled WPAN with Superframe Adaptation Via Traffic Indication
The IEEE 802.15.4 standard provides the widely accepted solution for low-cost and low-power wireless communications. Despite its design support for low duty-cycle operation, the fixed superframe size in Beacon-enabled mode limits its capabilities due to two contrasting goals; energy efficiency and higher data throughput. In this paper, we propose an enhancement of IEEE 802.15.4 Beacon-enabled m...
متن کاملTopology Based Performance Analysis of IEEE 802.15.4 for Wireless Sensor Networks
Wireless Local Area Networking standard (Wi-Fi) and the WPAN standard (Bluetooth and Zigbee) products utilize the same unlicensed 2.4 GHz ISM band. Co-existence between such wireless technologies within the same frequency spectrum is crucial to ensure that each wireless technology maintains and provides its desired performance requirements. Wireless Personal Area Networks are formed using tiny ...
متن کامل