Читать книгу Handbook of Intelligent Computing and Optimization for Sustainable Development - Группа авторов - Страница 138

Limitations of Wi-Fi are in the fact that it is spread over a very short distance (about 25 meters). When we are close to its source, the signals are strong, and when we are farther away, the signals become weak. This affects the communication. Another limitation of Wi-Fi is the security concerns that come with using it. The Wi-Fi is secured using a password which can be hacked very easily and the data of the user can be accessed.

We live in a third world country and there are a lot of security concerns. Whenever a place needs to be made secure, all mobile networks are blocked. In this way, communication through MANETs becomes impossible. Mobile nodes and network absence is the main issues. In MANETs, frequently establishment of links is difficult issue. There is limited bandwidth of wireless channel; in MANETs, there is limited power on which nodes work. Limits include the following:

1 1. No central control.

2 2. Fast movement of nodes.

3 3. Fast topology change.

4 4. Limited sources.

5 5. Communication gap between nodes.

VANETs (vehicular adhoc network) have cost, availability, node mobility, and topology changes that create issues in the practical life.

FANETs is very costly communication. They are not available everywhere. Their nodes are highly mobile and many data packets are lost in this way. Its node density is very low. We require mobility models for independent multi-UAV systems. Communication between the network and vehicle domain is hard.