Abstract
The IEEE 802.15.4e standard proposes Medium Access Control (MAC) to support collision-free wireless channel access mechanisms for industrial, commercial and healthcare applications. However, unnecessary wastage of energy and bandwidth consumption occur due to inefficient backoff management and collisions. In this paper, a new channel access mechanism is designed for the buffer constraint sensor devices to reduce the packet drop rate, energy consumption and collisions. In order to avoid collision due to the hidden terminal problem, a new frame structure is designed for the data transmission. A new superframe structure is proposed to mitigate the problems due toWiFi and ZigBee interference. A modified superframe structure with a new retransmission opportunity for failure devices is proposed to reduce the collisions and retransmission delay with high reliability. Performance evaluation and validation of our scheme indicate that the packet drop rate, throughput, reliability, energy consumption and average delay of the nodes can be improved significantly.
| Original language | English |
|---|---|
| Article number | 1320 |
| Journal | Sensors |
| Volume | 17 |
| Issue number | 6 |
| DOIs | |
| State | Published - 07 06 2017 |
Bibliographical note
Publisher Copyright:© 2017 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords
- IEEE 802.15.4e
- Performance analysis
- Superframe
- Wireless sensor networks
