Routing information generation method, calling method, gateway, service gateway, system

Abstract

The present invention provides an information preprocessing method for initiating a call during international roaming. When receiving a calling request sent by a mobile phone account through the network of an overseas operator, the service information corresponding to the mobile phone account is queried. When the mobile phone account When handling the number portability transfer service from the first operator network, determine the information of the second operator network to which the mobile phone account is transferred, and include the information of the second operator network to which the mobile phone account is transferred. The routing of the information directs the information to be sent to the international gateway office corresponding to the network of the overseas operator. The method provided by the present invention can determine the operator network to which the calling mobile phone account is transferred after discovering that the 4G international roaming mobile phone account has handled the number portability transfer service, and send the corresponding information to the international gateway office of the overseas operator, so that It is convenient for the international gateway office of the overseas operator to directly send the call information to the international gateway office of the second operator to which the calling mobile phone account is transferred.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for generating routing pointing information when a mobile phone account initiates a call during international roaming, a public data network gateway for realizing the method, and a caller for international roaming A realization method, a service gateway for realizing the caller realization method of international roaming, and a communication system including the public data network gateway and the service gateway. Background technique [0002] Voice over Long-Term Evolution (VoLTE, Voice over Long-Term Evolution) is an end-to-end voice solution based on an all-IP architecture on a 4G network. Its voice and data capacity is three times that of 3G, and its accuracy is as high as six times that of 2G. Times, can significantly improve the user's call quality. [0003] In the existing VoLTE user 4G roaming call, the calling terminal usually connects to the IMS...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing technology, it has not considered how VoLTE users who transfer their numbers to the network can achieve international roaming

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