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Top1. Introduction
A network is a gathering of devices connected together to share their resources with each other and sharing data/information. Protocols in networks are used to define the properties of the network by declaring list of rules and regulations. This performs a major job in governing the overall architecture of the system network. Without protocols, networks will not perform well in a long run. There are many types of protocols for networks. Each has its own use, thus every network needs a dedicated and designed protocol to function. Every network demands unique style and purpose of transmitting the data. PEGASIS is a protocol which is used for Wireless Sensor Networks. It uses multi-hoping chain based approach to transfer the data to the base station from leader node.
WSN plays a vital role in modern day world, by collecting the data from remote places and helps in converting it to information for research and security purposes. A sensor is a subsystem which is used to monitor the differences in the surroundings. It frequently sends the collected data to the computer or a mobile device to intimate the changes. The communication medium is wireless. WSN indicates, it has node devices connected together via wireless communication medium to collect the information from each the devices. A group of networks are also called as clusters. Each cluster will have Cluster Members (CM) and Cluster Head (CH)/ leader node. CM will gather the information and finally passes it to the leader node, the leader node will be sent to a Sink Device. A sink is a device specifically designed to receive the incoming data from another device/node. Finally all the collected data from the sink will get passed to the Base Station (BS). BS acts as a local hub used to receive/transmit data with the help of wireless signals. (Carlos-Mancilla et al., 2016)
Routing is used to detect a minimal path between the initial node and the terminus node within the network. The main purposes of routing devices are fewer consumption of energy, lowering the suspension time and service quality. WSN routing protocols can be organized in to three major categories, they are
In Hierarchal chain based routing protocol, PEAGASIS is one such protocol. Low-Energy Adaptive Clustering Hierarchy (LEACH) protocol is the first step of the link based routing protocol. It is said to be the predecessor of PEGASIS. LEACH is a block based, distributed clustering algorithm. It chooses the CH randomly on each round or based on some criteria including energy, distance or weight.(Gill et al., 2014)(Amer et al., 2019) In PEGASIS, there are 6 different types of protocols. Each one has its unique feature thus it is used for certain purposes. The six PEGASIS protocols are listed as follows,
- 1.
EEPB Protocol
- 2.
ANT-PEGASIS Protocol
- 3.
H-PEGASIS Protocol
- 4.
PDCH Protocol
- 5.
IEEPB Protocol
- 6.
MIEEPB Protocol