what is andsf
Access network discovery and selection function. Access network discovery and selection function (ANDSF) is an entity within an evolved packet core (EPC) of the system architecture evolution (SAE) for 3GPP compliant mobile networks.
Mobile data traffic offloading is a key strategy for mobile operators seeking to reduce infrastructure costs and to manage the heavy demands placed on network capacity. Access Network Discovery and Selection Function (ANDSF) is a key technology for enabling carriers to offload data traffic from the mobile network. ANDSF is an element of the 3GPP standard that is designed to assist mobile devices in discovering offload destinations, including Wi-Fi, WiMAX, and CDMA2000 networks.