Core network system supporting different field general terminal and calling method
A calling method and core network technology, applied in wireless communication, communication supplementary services, network data management and other directions, can solve problems such as reduced efficiency, increased network performance requirements, and inability to use common terminals, and achieve accurate network selection, reduced requirements, The effect of improving the user experience
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Embodiment 1
[0073] see figure 2 , including CS domain core network A, IMS domain core network B, CS domain core network A and IMS domain core network B are connected through MGCF B5, and also includes foreign domain general terminal C. The so-called general-purpose terminal in a foreign region means that the terminal C uses a 2nd generation SIM+ISIM composite card or a 3rd generation USIM+ISIM composite card. Under the same E.164 number, it can access the IMS domain and use the IMS service , and can access the CS domain to use the CS service, and may use the services of the two domains at the same time.
[0074] For example, when using the 2nd generation SIM+ISIM composite card, you can use all the 2nd generation CS domain and PS domain services by accessing the 2nd generation network, and you can also access the IMS domain through the 2nd generation GPRS to use non-real-time IMS services ( Such as instant messaging) and real-time IMS services (such as multimedia sessions); when using a...
Embodiment 2
[0084] see image 3 , whose building blocks are the same as figure 2 The same as shown, the difference is that the HLR A2 and the HSSB2 are combined to form an overall device D; the SCP A3 interacts with the HLR A2 and the HSS B2 respectively, specifically, the SCP A3 communicates with the integrated overall device D , the network selection application server B3 interacts with the HLR A2 and the HSS B2 respectively, specifically, the network selection application server B3 communicates with the co-established overall device D.
[0085] Since the HLR and the HSS are co-located and connected through an internal interface is the development trend of mobile communication network integration, therefore, the solution provided by this embodiment is more suitable for the integrated mobile communication system.
Embodiment 3
[0087] see Figure 4, whose building blocks are the same as figure 2 The same as shown, the difference is that the HLR A2 communicates with the HSS B2, and the HLR A2 updates the registration status information of the CS domain terminal to the HSS B2.
[0088] Then described SCP A3 interacts with HLR A2 and HSS B2 respectively and is specifically described SCP A3 and HSS B2 communication connection, can learn the CS domain terminal registration status information that HLR A2 provides; Described network selection application server B3 communicates with HLR respectively Specifically, the interaction between A2 and HSS B2 is that the network selection application server B3 communicates with the HSS B2 to obtain the CS domain terminal registration status information provided by the HLR A2.
[0089] The solution provided by this embodiment does not require large-scale transformation of HLR and HSS equipment, and avoids the increase of system complexity caused by multiple connecti...
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