Subscription fall-back in a radio communication network

1. A method performed by a connectivity service platform in a communication network, the method comprising:

receiving a request message from a radio device previously enabled to communicate with the connectivity service platform via a wireless network connection of a first subscription of the radio device, the request message identifying a second subscription of the radio device and received via a wireless network connection of the second subscription of the radio device;

observing that the connectivity service platform is not enabled to communicate with the radio device via the wireless network connection of the second subscription;

determining that the received request message is associated with a fallback attribute;

activating the second subscription in the connectivity service platform in response to the received request message; and

accepting the request message, thereby enabling the connectivity service platform to communicate with the radio device via the wireless network connection of the second subscription of the radio device.

2. The method of claim 1 , further comprising, before the activating of the second subscription, checking that an access control list stored in the platform includes a device identifier identifying the radio device.

3. The method claim 2 , wherein the device identifier is at least one of a Universal Integrated Circuit Card (UICC), identifier and an International Mobile Station Equipment Identity (IMEI).

4. The method of claim 2 , wherein the checking comprises checking that the access control list comprises a subscription identifier, identifying the second subscription, which is paired with the device identifier in the access control list.

5. The method of claim 4 , wherein the subscription identifier is an International mobile subscriber identity (IMSI).

6. The method of claim 1 , wherein the fallback attribute is a code which is predefined in, and recognized by, the connectivity service platform as a fallback attribute.

7. The method of claim 1 , wherein the connectivity service platform is enabled to communicate with the radio device comprising an embedded Universal Integrated Circuit Card (eUICC).

8. The method of claim 1 , wherein the request message is one of:

a registration request for registering the radio device via the second subscription;

an attach request for attaching the radio device via the second subscription;

a location update request for updating the location of the radio device via the second subscription;

an authentication request for authenticating the radio device via the second subscription;

a short message service (SMS) request from the radio device via the second subscription;

a packet data protocol (PDP) context create or activation request from the radio device via the second subscription.

9. A connectivity service platform for a communication network, the platform comprising:

processor circuitry; and

memory containing instructions executable by the processor circuitry whereby the connectivity service platform is operative to:

receive a request message from a radio device enabled to communicate with the connectivity service platform via a wireless network connection of a first subscription of the radio device, the request message identifying a second subscription of the radio device and received via a wireless network connection of the second subscription of the radio device;

observe that the connectivity service platform is not enabled to communicate with the radio device via a wireless network connection of the second subscription;

determine that the received request message is associated with a fallback attribute; activate the second subscription in the connectivity service platform in response to the received request message;

accepting the request message, thereby enabling the connectivity service platform to communicate with the radio device via the wireless network connection of the second subscription of the radio device.

10. A method performed by a radio device in a communication network, the radio device enabled to communicate with a connectivity service platform via a wireless connection of a first subscription of the radio device, the method comprising:

preparing a request message comprising a fallback attribute, said request message identifying a second subscription of the radio device; and

sending the request message uplink via a wireless network connection of the second subscription of the radio device, for prompting a connectivity service platform to activate the second subscription in the connectivity service platform in response to the connectivity service platform receiving and accepting the request message comprising the fallback attribute.

11. The method of claim 10 :

further comprising falling back to the second subscription of the radio device, thereby enabling the radio device to obtain the wireless network connection of the second subscription instead of the first subscription.

12. The method of claim 11 , wherein the falling back is in accordance with a predetermined fallback policy stored in the radio device.

13. The method of claim 10 , wherein the radio device comprises an embedded Universal Integrated Circuit Card (eUICC).

14. The method of claim 13 , wherein the second subscription is a provisioning subscription of the eUICC.

15. A radio device for a communication network, the radio device enabled to communicate with a connectivity service platform via a wireless connection of a first subscription of the radio device and comprising:

processor circuitry; and

memory containing instructions executable by the processor circuitry whereby the radio device is operative to:

prepare a request message comprising a fallback attribute, said request message identifying a second subscription of the radio device; and

send the request message uplink via a wireless network connection of the second subscription of the radio device, for prompting a connectivity service platform to activate the second subscription in the connectivity service platform in response to the connectivity service platform receiving and accepting the request message comprising the fallback attribute.

16. A computer program product stored in a non-transitory computer readable medium for controlling a connectivity service platform in a communication network, the computer program product comprising software instructions which, when run on processor circuitry of the connectivity service platform, causes the connectivity service platform to:

receive a request message from a radio device enabled to communicate with the connectivity service platform via a wireless network connection of a first subscription of the radio device, the request message identifying a second subscription of the radio device and received via a wireless network connection of the second subscription of the radio device;

observe that the connectivity service platform is not enabled to communicate with the radio device via the wireless network connection of the second subscription;

determine that the received request message is associated with a fallback attribute;

activate the second subscription in the connectivity service platform in response to the received request message; and

accepting the request message, thereby enabling the connectivity service platform to communicate with the radio device via the wireless network connection of the second subscription of the radio device.

17. A computer program product stored in a non-transitory computer readable medium for controlling a radio device in a communication network, the radio device enabled to communicate with a connectivity service platform via a wireless connection of a first subscription of the radio device, the computer program product comprising software instructions which, when run on processor circuitry of the radio device, causes the radio device to:

prepare a request message comprising a fallback attribute, said request message identifying a second subscription of the radio device; and

send the request message uplink via a wireless network connection of the second subscription of the radio device, for prompting a connectivity service platform to activate the second subscription in the connectivity service platform in response to the connectivity service platform receiving and accepting the request message comprising the fallback attribute.