Method and device for handling wake-up signals

1. A wireless device for handling wake-up signaling, wherein the wireless device is configured to:

receive a wake-up signal comprising: i) wake-up information for enabling the wireless device to determine whether the wake-up signal is intended for the wireless device and ii) authentication information for enabling the wireless device to determine whether or not the wake-up message is authentic, wherein the wake-up information is separate from the authentication information;

determine whether the wake-up signal is intended for the wireless device based on the wake-up information; and

after and as a result of determining that the wake-up signal is intended for the wireless device, determine whether the wake-up signal is authentic based on the authentication information;

wherein, after determining that the wake-up signal is intended for the wireless device and determining that the wake-up signal is authentic, the wireless device is further configured to initiate wake-up of radio circuitry comprised in the wireless device.

2. The wireless device of claim 1 , wherein the wireless device comprises:

interface circuitry configured to:

receive the wake-up signal comprising wake-up information and authentication information; and

determine whether the wake-up signal is intended for the wireless device based on the wake-up information; and

processing circuitry configured to:

determine whether the wake-up signal is authentic based on the authentication information;

wherein, upon determining that the wake-up signal is intended for the wireless device, the interface circuitry is further configured to forward the authentication information to the processing circuitry; and

upon determining that the wake-up signal is authentic, the processing circuitry is further configured to initiate wake-up of the radio circuitry comprised in the wireless device.

3. The wireless device of claim 2 , wherein, upon determining that the wake-up signal is intended for the wireless device, interface circuitry is further configured to initiate wake-up of the processing circuitry before forwarding the authentication information to the processing circuitry.

4. The wireless device of claim 2 , wherein the processing circuitry comprises a microprocessor unit configured to initiate wake-up of the radio circuitry.

5. The wireless device of claim 2 , wherein the processing circuitry comprises a Secure Cryptoprocessor configured to determine whether the wake-up signal is authentic based on the authentication information.

6. The wireless device of claim 2 , wherein the interface circuitry is configured to wake-up the processing circuitry over a communications interface between the interface circuitry and the processing circuitry.

7. A method performed by a wireless device for handling wake-up signaling, wherein the method comprises:

receiving a wake-up signal comprising: i) wake-up information for enabling the wireless device to determine whether the wake-up signal is intended for the wireless device and ii) authentication information for enabling the wireless device to determine whether or not the wake-up message is authentic, wherein the wake-up information is separate from the authentication information;

determining whether the wake-up signal is intended for the wireless device based on the wake-up information;

after and as a result of determining that the wake-up signal is intended for the wireless device, determining whether the wake-up signal is authentic based on the authentication information; and

after determining that the wake-up signal is intended for the wireless device and determining that the wake-up signal is authentic, initiating wake-up of radio circuitry comprised in the wireless device.

8. The method of claim 7 , wherein the method further comprises:

upon determining that the wake-up signal is intended for the wireless device, forwarding the authentication information from interface circuitry to processing circuitry comprised in the wireless device for initiating wake-up of radio circuitry comprised in the wireless device.

9. The method of claim 8 , wherein the method further comprises:

upon determining that the wake-up signal is intended for the wireless device, initiating wake-up of the processing circuitry before forwarding the authentication information from interface circuitry to processing circuitry.

10. A computer program product comprising a non-transitory computer readable medium storing a computer program comprising instructions which, when executed by at least one processor of a wireless device causes the wireless device to carry out the method of claim 7 .

11. A wireless device for handling wake-up signaling, wherein the wireless device comprises:

a receiver for receiving a wake-up signal comprising: i) wake-up information for enabling the wireless device to determine whether the wake-up signal is intended for the wireless device and ii) authentication information for enabling the wireless device to determine whether or not the wake-up message is authentic, wherein the wake-up information is separate from the authentication information;

a first determining module for determining whether the wake-up signal is intended for the wireless device based on the wake-up information;

a second determining module for determining whether the wake-up signal is authentic based on the authentication information, wherein the wireless device is configured such that the second determining module determines whether the wake-up signal is authentic after and as a result of the first determining module determining that the wake-up signal is intended for the wireless device; and

a first initiating module for initiating wake-up of radio circuitry comprised in the wireless device upon determining that the wake-up signal is intended for the wireless device and determining that the wake-up signal is authentic.

12. The wireless device of claim 11 , wherein the wireless device comprises:

a forwarding module for forwarding the authentication information from interface circuitry to processing circuitry comprised in the wireless device for initiating wake-up of radio circuitry comprised in the wireless device, upon determining that the wake-up signal is intended for the wireless device.

13. The wireless device of claim 12 , wherein the wireless device comprises:

a second initiating module for initiating wake-up of the processing circuitry before forwarding the authentication information from the interface circuitry to the processing circuitry, upon determining that the wake-up signal is intended for the wireless device.