Answer : Requirement and Use of Wireless Communication System : If data communication of traveling or moving person is required, communication has to be established through wireless communication system. Everyone wants to be connected to the internet all the time now as time demands. This is only possible through wireless communication systems. স্থানে Wireless communication systems are most needed in areas where rapid communication is required , such as in disaster areas , accident sites , battlefields, etc. কোন In remote areas where communication is not possible through cable connection, communication is established through wireless communication system. • GPS (Global Positioning System) is used to identify the location of a car , plane , ship or a person. At present, taxi cab companies can operate their vehicles from the control room in this manner. This method is also very effective in monitoring the movement of any tourist in the tourism industry. • The most widely used device of the present time is the mobile phone or smartphone wireless communication system. For broadcast or broadcast national applications (such as television broadcast , radio broadcast, etc.). Wireless communication systems are used. নায় Wireless communication systems are used to communicate with the land surface in the operation of aircraft or ocean-going vessels. ওয় Wireless communication systems are used for remote control of various electrical and electronic devices used in the home. In this case television , air conditioner , computer used mouse-keyboard , various remote controlled toys of children are controlled and operated through remote control system.