This document discusses topology control protocols in wireless sensor networks. It outlines that topology control aims to optimize the locations of nodes during deployment, change transmission ranges, create a communication backbone, perform clustering, turn off unnecessary nodes, and add new nodes to maintain connectivity. The document separates topology control into construction and maintenance phases and notes challenges and opportunities in the field.

1. TOPOLOGY CONTROL
PROTOCOLS IN WSN

2. CONTENTS
• WSN an overview
• Topology control basic idea
• Topology control phases
Topology construction phase
Topology maintenance phase
Topology control motivations
• Challenges and opportunities.

7. Optimizing the node locations in deployment phase
Change the Transmission range of nodes
Create a communication backbone
Clustering
Turn OFF nodes from the network
Adding new nodes to the network to preserve connectivity.