MAC Protocols for Wireless Sensor Networks

Collision, overhearing, packet overhead

Single chip with embedded memory, processor, and transceiver

Communication is more energy-consuming than computation

Target tracking and border surveillance

Limited coverage and communication range compared to other mobile devices

Exhausted batteries are hard to charge/replace

Idle listening is listening to receive possible traffic that is not sent.

The main goal is to minimize energy waste due to idle listening, overhearing, and collision.

Energy efficiency, latency, and throughput.

Broadcast, convergecast, and local gossip.

It is used by a base station to transmit information to all sensor nodes of the network.

It is a kind of communication where a sensor sends a message to its neighboring nodes within a range.

It involves a group of sensors communicating to a specific sensor or base station.

Sensor nodes are battery powered, and it's difficult to change or recharge their batteries.

It helps in reducing energy wastage and prolonging the lifespan of sensor nodes.

Throughput requirement varies with different applications, and some applications require higher throughput for data sampling.

Collision, overhearing, and packet overhead

It is generally hard or impractical to charge or replace the exhausted battery in WSNs because of the distributed and often inaccessible deployment of sensor nodes.

The primary concern is to minimize communication while achieving the desired network operation, as communication is more energy-consuming than computation in sensor nodes.

Low-cost sensor nodes are composed of a single chip with embedded memory, processor, and transceiver.

Sensor networks must include a large number of nodes to successfully cover the target area, especially in applications like target tracking and border surveillance.

Energy efficiency is crucial for MAC protocols in sensor networks to minimize energy consumption and extend the operational lifespan of the sensor nodes.

Minimizing idle listening is important in sensor networks to reduce energy wastage and improve energy efficiency of sensor nodes.

The three types of communication patterns defined in wireless sensor networks are broadcast, convergecast, and local gossip.

Energy efficiency is crucial for MAC protocols in sensor networks because sensor nodes are often battery powered and it's difficult to replace or recharge their batteries.

The significance of throughput in sensor network applications lies in the varying throughput requirements for different applications, such as the need for fine temporal resolution in certain sensor applications.

The main goal of any MAC protocol for sensor networks is to minimize energy wastage due to idle listening, overhearing, and collisions.

Sensor networks must include a large number of nodes in some applications to meet the throughput and data sampling requirements of those applications.

The local gossip communication pattern in WSNs involves a sensor sending a message to its neighboring nodes within a range.

It is generally hard or impractical to charge or replace the exhausted battery in WSNs because sensor nodes are often deployed in remote or inaccessible locations.

The attributes to be considered for designing a good MAC protocol for WSNs include energy efficiency, latency, and throughput.

The major sources of energy waste in wireless sensor networks are idle listening, overhearing, and collision.