Data service processing method, apparatus, and system in roaming scenario

1. A data service processing method in a roaming scenario, the method comprising:

acquiring, by a network side device of a visited network from a home subscriber server of the visited network, after selection by a subscriber of an alternative roaming provider from among multiple alternative roaming providers associated with the visited network, information about the alternative roaming provider selected by the subscriber, wherein the acquired information comprises at least an identifier of the alternative roaming provider, wherein the alternative roaming provider is a roaming service provider in a roaming area, wherein the roaming service provider is a mobile virtual network operator (MVNO), wherein the identifier of the roaming service provider is a virtual access point name (APN), wherein the virtual APN is different from an actually used APN;

selecting, by the network side device, a gateway according to the acquired information about the alternative roaming provider;

performing, by the network side device, data service processing by using the gateway; and

wherein acquiring, by the network side device from the home subscriber server of the visited network, the information about the alternative roaming provider selected by the subscriber comprises:

receiving, by the network side device, a subscription data insertion message sent by the home subscriber server after the home subscriber server generates the information about the alternative roaming provider selected by the subscriber according to a first mapping relationship provided by a roaming service support system, the first mapping relationship comprising a mapping relationship between a subscriber identifier and the identifier of the alternative roaming provider selected by the subscriber, the subscription data insertion message carrying the information about the alternative roaming provider selected by the subscriber.

2. The method according to claim 1 , wherein after receiving the subscription data insertion message sent by the home subscriber server of the visited network, the method further comprises:

initiating a detach procedure to a user terminal according to the subscription data insertion message;

receiving an attach request initiated by the user tell final;

requesting authentication from a home subscriber server of a home network according to the attach request; and

receiving an authentication success response returned by the home subscriber server of the home network.

3. The method according to claim 1 , wherein before acquiring information about the alternative roaming provider selected by the subscriber, the method further comprises:

receiving, by the network side device, a data service request initiated by a user terminal; and

redirecting, by the network side device, the data service request to a roaming service support system, the data service request configured to enable the roaming service support system to send information about the multiple alternative roaming providers to the user terminal for selection by the subscriber.

4. A network side device, comprising:

a memory configured to store data;

a transceiver unit configured to send and receive data; and

a processor configured to:

acquire, from a home subscriber server of a visited network, after selection by a subscriber of an alternative roaming provider from among multiple alternative roaming providers associated with the visited network, information about the alternative roaming provider selected by the subscriber, wherein the acquired information comprises an identifier of the alternative roaming provider, wherein the alternative roaming provider is a roaming service provider in a roaming area, wherein the roaming service provider is a mobile virtual network operator (MVNO), wherein the identifier of the roaming service provider is a virtual access point name (APN), wherein the virtual APN is different from an actually used APN;

select a gateway according to the acquired information about the alternative roaming provider,

perform data service processing by using the gateway, and

wherein to acquire, from the home subscriber server of the visited network, the information about the alternative roaming provider selected by the subscriber, the processor is configured to:

receive a subscription data insertion message sent by the home subscriber server after the home subscriber server generates the information about the alternative roaming provider selected by the subscriber according to a first mapping relationship provided by a roaming service support system, the first mapping relationship comprising a mapping relationship between a subscriber identifier and the identifier of the alternative roaming provider selected by the subscriber, the subscription data insertion message carrying the information about the alternative roaming provider selected by the subscriber.

5. The network side device according to claim 4 , wherein the processor is further configured to:

initiate a detach procedure to a user terminal according to the subscription data insertion message;

receive an attach request initiated by the user terminal; request authentication from a home subscriber server of a home network according to the attach request; and

receive an authentication success response returned by the home subscriber server of the home network.

6. The network side device according to claim 4 , wherein the processor is further configured to:

receive a data service request initiated by a user terminal; and

redirect the data service request to a roaming service support system, the data service request configured to enable the roaming service support system to send information about the multiple alternative roaming providers to the user terminal for selection by the subscriber.