An energy efficient and delay sensitive centralized MAC protocol for wireless sensor networks (original) (raw)
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2009
The development of wireless sensor networks (WSN) can be motivated by several types of applications such as habitat monitoring, smart healthcare system, building automa- tion, and etc. These applications however, demand an energy-efficient WSN that can pro- long the network lifetime and can provide high throughput, low latency and delay, and high packet received rate data communication. The ability of wireless network structure to mi- nimize network lifetime is among the hot topic due to limitation resources such as energy, processing and memory, in sensor network architecture itself. This paper proposes a novel approach that tries to reduce idle energy consumption by implementing active-sleep algo- rithm named energy aware A-MAC protocol. The result from the computational model shows that the algorithm can prolong network lifetime due to efficiency in energy con- sumption from time slot management.
Comparison of S-MAC & TDMA-W Protocols for Energy Efficient Wireless Sensor Networks
2006
Energy efficiency is a major consideration while designing wireless sensor network nodes. Most sensor network applications require energy autonomy for the complete lifetime of the node, which may span up to several years. These energy constraints require that the system be built such that each component consumes minimum possible power. Consequently, the main objective is to devise strategies for energy reduction in different physical components while implementing all layers of the network protocol stack within a node. This paper compares S-MAC (a random access MAC Protocol) and TDMA-W (a scheduled MAC Protocol) for Wireless Sensor Networks in terms of their energy efficiency. The Network Layer protocol is assumed to be fixed for this comparison and is the Energy Aware Routing Protocol. This paper presents initial results while comparing different S-MAC and TDMA-W schemes.
Comparison of S-MAC&TDMA-W Protocols for Energy Efficient Wireless Sensor Networks
2006 International Conference on Emerging Technologies, 2006
Energy efficiency is a major consideration while designing wireless sensor network nodes. Most sensor network applications require energy autonomy for the complete lifetime of the node, which may span up to several years. These energy constraints require that the system be built such that each component consumes minimum possible power. Consequently, the main objective is to devise strategies for energy reduction in different physical components while implementing all layers of the network protocol stack within a node. This paper compares S-MAC (a random access MAC Protocol) and TDMA-W (a scheduled MAC Protocol) for Wireless Sensor Networks in terms of their energy efficiency. The Network Layer protocol is assumed to be fixed for this comparison and is the Energy Aware Routing Protocol. This paper presents initial results while comparing different S-MAC and TDMA-W schemes.
Computational Model for Energy Aware TDMA-based MAC Protocol for Wireless Sensor Network System
2007
The development of wireless sensor networks (WSN) can be motivated by several types of applications such as habitat monitoring, smart health care system, building automation, and etc. These applications however, demand an energy-efficient WSN which can prolong the network lifetime and can provide high throughput, low latency and delay, and high packet received rate data communication. The ability of wireless
Delay Sensitive and Longevity of Wireless Sensor Network Using S-MAC Protocol
2014
In WSN, delay sensitive means minimizing the delay of event driven wireless sensor network for which events occur occasionally by using asynchronous sleep wake scheduling protocol (SWSP). SWSP can be significantly reduced the energy consumption without incurring the communication overhead the clock synchronization needed for synchronous SWSP. In WSN most of the energy consumed through when the sensor nodes are on waiting for an event to occur. SWSP is an effective mechanism to increase the lifetime of WSN. This article presents the energy consumption by the mobile sensor nodes using 802.11 media access control (MAC) and sensor media access control (SMAC) protocols and calculates total energy consumption in the network which helps to make a good balance between energy efficiency and delay. Also the investigation report is presented which explains the throughput and end to end delay of nodes and estimate the life time of sensor networks based on delay (latency). Network Simulator-2 is...
Energy and rate based MAC protocol for wireless sensor networks
Sigmod Record, 2003
Sensor networks are typically unattended because of their deployment in hazardous, hostile or remote environments. This makes the problem of conserving energy at individual sensor nodes challenging. S-MAC and PAMAS are two MAC protocols which periodically put nodes (selected at random) to sleep in order to achieve energy savings. Unlike these protocols, we propose an approach in which node duty cycles (i.e sleep and wake schedules) are based on their criticality. A distributed algorithm is used to find sets of winners and losers, who are then assigned appropriate slots in our TDMA based MAC protocol. We introduce the concept of of energy-criticality of a sensor node as a function of energies and traffic rates. Our protocol makes more critical nodes sleep longer, thereby balancing the energy consumption. Simulation results show that the performance of the protocol with increase in traffic load is better than existing protocols, thereby illustrating the energy balancing nature of the approach.
Performance analysis of an energy efficient mac protocol for sensor networks
The Distributed Coordination Function (DCF) is the mandatory access method for any compliant device in Wireless Local Area Networks (WLANs) based on the IEEE 802.11 Standard. WLAN Access Points (APs) and stations (STAs) contend for the access to the wireless channel in order to transmit data by using a variation of Carrier Sense Multiple Access (CSMA). In doing so, they consume a significant amount of energy for continuously monitoring the channel state. In this paper we investigate backwards-compatible mechanisms to increase throughput and energy efficiency in WLANs during contention periods based on DCF. The first mechanism is called Bi-Directional DCF (BD-DCF) because it allows for bidirectional transmissions between APs and STAs with a single channel access invocation. The second mechanism is called Bi-Directional Sleep DCF (BDSL-DCF) as it allows overhearing STAs to enter the sleep state, i.e. switch off the radio transceiver, during bidirectional transmissions. We analyze the performance limits of the proposed protocols in terms of throughput and energy efficiency considering different values for the data packet length and data rate. The results of this work show that the BD-DCF and BDSL-DCF protocols can improve throughput up to 60% and energy efficiency up to 360% when compared to legacy DCF.
2012 IFIP Wireless Days, 2012
Wireless sensor networks are one of the key technologies to ensure ubiquitous connectivity for the internet of future where billions of things must be connected. As sensor nodes are generally energy-constrained, the critical issue to face is how to reduce energy consumption so that the network life is prolonged. Time Division Multiple Access based protocols are inherently energy-efficient since nodes are awake only during their slots and sleep the rest of the time. To our knowledge, few are the works that have investigated the impact of a dynamic TDMA frame size on the network energy consumption. In this paper, we propose a new energy efficient MAC protocol for wireless sensor networks, called Sensor One shot Slot TDMAbased Reservation (S-OSTR). S-OSTR brings the idea of a dynamic active period, since it deploys a dynamic frame size that is built slot-by-slot according to nodes arrival to the network leading to a shorter achieved frame size. The short frame size combined with an appropriate spatial reuse scheme contributes to significant save of energy. The S-OSTR energy efficiency has been approved by a set of simulations comparing our proposal with SERENA [1].
IJERT-Investigation of New Energy Efficient MAC Protocol for WSN's
International Journal of Engineering Research and Technology (IJERT), 2012
https://www.ijert.org/investigation-of-new-energy-efficient-mac-protocol-for-wsns https://www.ijert.org/research/investigation-of-new-energy-efficient-mac-protocol-for-wsns-IJERTV1IS8689.pdf Mobility together with energy efficiency in wireless sensor networks have imposed significant challenges for the medium access control (MAC) protocol design to provide reliable communication with good data rates and low energy consumption. Most of the MAC protocols proposed for wireless sensor networks assume static sensor nodes, which usually causes degradation in network performance in scenarios involving mobile sensors. In this paper, we introduce a mobility aware and energy efficient medium access protocol for mobile wireless sensor networks. This proposed protocol is based on a hybrid scheme of TDMA and CSMA that informs sensor nodes when to wakeup or when to go to sleep to save energy. Furthermore, proposed protocol dynamically adjusts the frame size to enable the protocol to effectively adapt itself to changes in mobility and traffic conditions. Through computer simulations, we evaluate the performance of this new protocol and compare it against the MMAC protocol.
A novel MAC scheduler to minimize the energy consumption in a Wireless Sensor Network
Ad Hoc Networks, 2014
The rising success of the Internet of Things has led the Wireless Sensor Networks to play an important role in many fields, ranging from military to civilian applications. However, since sensor nodes are battery powered, communication protocols and applications for these networks must be carefully designed in order to limit the power consumption. In this work, a new MAC protocol able to significantly reduce the power consumption and compatible with the IEEE 802.15.4 standard, is designed and validated. The defined protocol is based on an efficient setting of the node's duty cycle as a function of the transmission times of the neighbor nodes. In a duty cycle period, each node wakes up once to transmit and N times to receive, where N is the number of neighbors, while it remains in sleep mode for the rest of the time. The defined protocol has been validated through both an analytical and a simulative approach. By using the first approach, the proposed solution is compared with another energy-efficient protocol, namely AS-MAC; then, the differences between the simulated scenario and the analytical one are analyzed. By using the second approach (through Omnet++ simulator), we carried out a performance comparison between our protocol and the current MAC protocol compliant with the ZigBee standard. All the results have shown the effectiveness of the proposed solution, which has proved to be flexible and efficient, since it is able to provide high energy savings at different date rate, without a negative impact on the packets delivery.