Wireless Networks Questions Long
Wireless network roaming and handover are two important concepts in the field of wireless communication.
Wireless network roaming refers to the ability of a mobile device to seamlessly connect and switch between different wireless networks while maintaining an uninterrupted connection. It allows users to move from one location to another without losing connectivity. Roaming is particularly useful in situations where a user is moving between different coverage areas or when the signal strength of the current network becomes weak.
When a mobile device roams, it searches for available networks in the vicinity and evaluates their signal strength and quality. It then selects the most suitable network and establishes a connection with it. This process is typically transparent to the user, as the device automatically handles the network selection and connection establishment.
On the other hand, handover is the process of transferring an ongoing call or data session from one base station or access point to another, within the same network or between different networks, without interrupting the communication. Handover is necessary when a mobile device moves out of the coverage area of the current base station or when the signal quality deteriorates.
During a handover, the mobile device continuously monitors the signal strength and quality of neighboring base stations or access points. When it detects that the signal strength of the current connection is below a certain threshold or that a neighboring base station provides a stronger signal, it initiates the handover process. The device then establishes a connection with the new base station while simultaneously disconnecting from the previous one.
Handover can be classified into two types: hard handover and soft handover. In hard handover, the mobile device completely disconnects from the current base station before connecting to the new one. This results in a brief interruption in the communication. In soft handover, the device maintains connections with both the current and new base stations for a short period, allowing for a seamless transition without any interruption.
Both roaming and handover are crucial for providing uninterrupted wireless communication and ensuring a seamless user experience. They enable users to stay connected while moving within the coverage area of wireless networks, whether it be within a single network or across different networks. These concepts are fundamental in the design and operation of wireless networks, allowing for mobility and flexibility in wireless communication.