A Cluster Based Adaptive Low Power MAC Protocol for Wireless Sensor Networks

2008 ◽  
Author(s):  
Guoliang Yao ◽  
Hao Liu ◽  
Chen Hu ◽  
Longxin Shi
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Low Power ◽  
Mac Protocol ◽  
Wireless Sensor

A Low Power IoT Medium Access Control for Receiver-Assigned CDMA

2019 ◽  
Vol 11 (2) ◽  
pp. 24-41 ◽  
Author(s):  
Eric E. Petrosky ◽  
Alan J. Michaels ◽  
Joseph M. Ernst
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Access Control ◽  
Low Power ◽  
Medium Access Control ◽  
Multiple Access ◽  
Mac Protocol ◽  
Wireless Sensor ◽  
Medium Access ◽  
Cdma Networks

Low power, low cost, and security-conscious wireless sensor networks are becoming increasingly pervasive in the internet of things (IoT). In these networks, receiver-assigned code division multiple access (RA-CDMA) offers benefits over existing multiple access techniques. RA-CDMA networks are asynchronous, robust against multipath interference, and offer resilience against collision. A lightweight medium access control (MAC) protocol is needed to facilitate communication in RA-CDMA networks between low power sensor nodes and access points. This article provides an overview of RA-CDMA and proposes elements of a new MAC protocol that could improve performance of certain wireless sensor networks. Key features of the proposed MAC design are introduced and compared to those of existing protocols, highlighting its simple and lightweight design. Through its compatibility with RA-CDMA, the MAC design eliminates significant overhead and complexity while meeting requirements for low power networks, which enables the implementation of dense IoT sensor networks.

Enhancement of Asynchronous MAC Protocol in Wireless Sensor Networks for Smart Monitoring Applications

2017 ◽  
Vol 3 (1) ◽  
pp. 51
Author(s):  
Vo Que Son ◽  
Tran Truong Son
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Low Power ◽  
Mac Protocol ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Delivery Ratio ◽  
Mac Layer ◽  
Test Bed ◽  
Monitoring Test

Up to now, many research works have been focusing on designs in MAC layer of Wireless Sensor Networks (WSNs) to target high throughput, low latency and solving the problem of idle listening. In this paper, an enhancement of Low-power asynchronous protocol for MAC layer, namely E-MAC, is proposed to target a long lifetime of sensor nodes working 6LoWPAN/IPv6 networks. Moreover, the E-MAC protocol is implemented on TI low-power platforms to verify the efficiency of the proposed design. Several parameters such as energy consumption, latency and packet delivery ratio are simulated and measured in a real monitoring test-bed to show the better performance in comparison with other popular MAC protocols.

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