tPortNumber QoS DomainName / APN PLMN/TAC/LAC/ GERAN_CI RoutingCriteria Validity/ Area 3GPP_Location UTRAN_CI/EUTRA_CI SID/NID 3GPP2 Location Base ID Sector ID Netmask WIMAX_Location NAP_ID/BS_ID WLAN_Location HESSID/SSID /BSSID Geo Location Circular AnchorLatitude AnchorLongitude ValidityAreaRef Radius TimeOfDay TimeStart/TimeStop/DateStart / DateStop / DateOfWeek TimeOfDayRef RANValidityCondition RANValidityConditionRef RoutingRule AccessTechnology / AccessId SecondaryAccessId / AccessNetworkPriotity RulePriority Figure 10.3. IFOM rules Network Discovery and Selection An IFOM rule can also identify which radio accesses are restricted for the traffic, such as the prohibition to use the Wi-Fi interface for IP packets containing voice. Each IFOM rule can identify the traffic based on the IP address of the source or destination, the transport protocol, the port numbers of the source or destination, the DSCP (DiffServ Code Point) or TC (Traffic Class) field. The MAPCON (Multiple-Access PDN Connectivity) rules identify a prioritized list of radio access technologies that should be used by the mobile to route each PDN connection that corresponds to an access point name (APN). As the PDN connection is anchored in the EPC network, mobility for each PDN connection is provided between LTE and Wi-Fi accesses. Figure 10.4 describes the structure of managed objects (MO) for MAPCON rules. ForServiceBased PLMN / TAC / LAC/ GERAN CI RoutingCriteria Validity Area 3GPP_Location UTRAN / EUTRA CI SID /NID 3GPP2_Location Base ID Sector ID Netmask WIMAX_Location NAP_ID/BS_ID WLAN_Location HESSID / SSID / BSSID Geo_Location Circular AnchorLatitude AnchorLongitude ValidityAreaRef Radius TimeOfDay TimeStart/TimeStop/DateStart / DateStop / DateOfWeek TimeOfDayRef RANValidityCondition RANValidityConditionRef RoutingRule AccessTechnology / AccessId / Secondary AccessId / AccessNetworkPriotity RulePriority Figure 10.4. MAPCOM rules 188 Wi-Fi Integration to the 4G Mobile Network A MAPCON rule can also identify which radio access is restricte