As smartphone devices have proliferated@ the capability of these terminals has also improved far more than before. Moreover@ big data may improve the performance of huge-volume data collection and analysis on access etwork profiles. Since access discovery and selection require both terminal and network parts to be involved@ there are two distinct methods to exchange the details of access and user preferences. The principle to estimate a solution has two aspects: 1) cost: Is it less expensive? 2) experience: Is it better? As cost is a key attribute for users to choose access@ network selection depends on information such as location and subscriber policy@ as well as price policy of the access. For example@ when a person enters a coffee shop@ they may prefer free access. However@ this kind of selection refers to user location where the access is deployed separately; only users can acquire the complete access list dynamically. On the other hand@ access providers can set the price policy and confirm the authorization status of a subscribers' access to the service. The experience issue also needs to consider two parts: 1) personal requirements@ such as high speeds for gaming or high bandwidth for video; 2) network status@ such as whether there is congestion@ or whether it requires complex authentication methods like extensible authentication protocol ?C subscriber identity module (EAP-SIM). Before starting the access selection process@ there are some information asymmetries between a user and an unknown network. Multiple accesses provide various choices for access selection. The intelligent solution would meet several requirements@ such as: less user intervention@ less user training@ less service interruption@ less access congestion and lower cost. This Recommendation describes scenarios@ requirements@ unified registration solutions@ and other aspects such as security and pricing for intelligent access selection in multi-connection. See also [ITU- T.Y.2251].