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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. The purpose of the ANDSF is to assist user equipment (UE) to discover non-3GPP access networks – such as Wi-Fi or WIMAX – that can be used for data communications in addition to 3GPP access networks (such as HSPA or LTE) and to provide the UE with rules policing the connection to these networks. == Information provided == An ANDSF can provide the following information to a UE, based on operator configuration: * Inter-system mobility policy (ISMP)– network selections rules for a UE with no more than one active access network connection (e.g., either LTE or Wi-Fi) * Inter-system routing policy (ISRP) – network selection rules for a UE with potentially more than one active access network connection (e.g., both LTE and Wi-Fi). Such UE may employ IP flow mobility (IFOM), multiple-access PDN connectivity (MAPCON) or non-seamless Wi-Fi offload according to operator policy and user preferences. * Discovery information – a list of networks that may be available in the vicinity of the UE and information assisting the UE to expedite the connection to these networks The ANDSF communicates with the UE over the S14 reference point, which is essentially a synchronization of an OMA-DM management object (MO) specific to ANDSF. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Access network discovery and selection function」の詳細全文を読む スポンサード リンク
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