Wake up procedure for a base station in a communications network

An apparatus of a communications network, the apparatus comprising:

• a transmitter;
• a receiver configured to receive, from a mobile apparatus, a message for waking up the apparatus in order to achieve access to the communications network;
• and
• a processor configured to
• determine whether the apparatus is in a standby mode in which the transmitter is deactivated, shift the apparatus to a wake up mode, in which the transmitter is kept deactivated, for at most an apparatus-specific offset time in response to receipt of the message in case the apparatus is in the standby mode,
• detect whether an acknowledgment message acknowledging that a successful access to the communications network has been achieved based on the message is received in the wake up mode of the apparatus,
• shift the apparatus to an active mode in which the transmitter is activated and provide access to the communications network for the mobile apparatus based on the message using the transmitter in, case no acknowledgment message has been received in the wake up mode when the apparatus-specific offset time elapses, and shift the apparatus to the standby mode when the acknowledgement message is received in the wake up mode of the apparatus.

A method comprising:

• transmitting an access request message for waking up an apparatus of a communications network in order to achieve access to the communications network;
• determining successful access to the communications network based on the access request message;
• and
• transmitting an acknowledgment message for acknowledging the successful access, wherein the acknowledgement message is linked to the access request message such that the access request message can be identified based on the acknowledgement message.

A method for an apparatus of a communications network, the method comprising:

• receiving, from a mobile apparatus, a message for waking up the apparatus in order to achieve access to the communications network;
• determining whether the apparatus is in a standby mode in which a transmitter is deactivated;
• shifting the apparatus to a wake up mode, in which the transmitter is kept deactivated, for at most an apparatus-specific offset time in response to receipt of the message in case the apparatus is in the standby mode;
• detecting whether an acknowledgment message acknowledging that a successful access to the communications network has been achieved based on the message is received in the wake up mode of the apparatus;
• shifting the apparatus to an active mode in which the transmitter is activated and providing access to the communications network for the mobile apparatus based on the message using the transmitter in case no acknowledgment message has been received in the wake up mode when the apparatus-specific offset time elapses;
• and
• shifting the apparatus to the standby mode when the acknowledgement message is received in the wake up mode of the apparatus.