Method and wireless communication device for idle mode mobility management

A nontransitory computer readable storage medium, having thereon a computer program comprising program instructions, the computer program being loadable into a data-processing unit and adapted to cause execution of a method when the computer program is run by the data-processing unit, wherein the method is of a wireless communication device adapted to operate in compliance with a first radio access technology in association with a first network and in compliance with a second radio access technology in association with a second network, the method comprising:

• reading a first information comprised in a first signal received from a first network node of the first network using the first radio access technology;
• determining whether the first information comprises a first list of neighboring cells for the second radio access technology;
• and
• if the first information comprises the first list of neighboring cells for the second radio access technology, using the first list of neighboring cells received from the first network node to provide idle mode mobility management for the second radio access technology in the second network,
• wherein the method is performed while the wireless communication device is concurrently in communication with the first network and with the second network.

An arrangement for a wireless communication device adapted to operate in compliance with a first radio access technology in association with a first network and in compliance with a second radio access technology in association with a second network, the arrangement comprising a processor adapted to cause:

• a) reading of first information comprised in a first signal received from a first network node of the first network using the first radio access technology;
• b) determining whether the first information comprises a first list of neighboring cells for the second radio access technology;
• and
• c) if the first information comprises the first list of neighboring cells for the second radio access technology, using of the first list of neighboring cells received from the first network node to provide idle mode mobility management for the second radio access technology in the second network,
• wherein a), b), and c) are performed while the wireless communication device is concurrently in communication with the first network and with the second network.

An arrangement for a wireless communication device adapted to operate in compliance with a first radio access technology in association with a first network and in compliance with a second radio access technology in association with a second network, the arrangement comprising:

• an information reading unit adapted to read first information comprised in a first signal received from a first network node of the first network using the first radio access technology;
• and
• a mobility management unit adapted to determine whether the first information comprises a first list of neighboring cells for the second radio access technology, and if the first information comprises the first list of neighboring cells for the second radio access technology, to use the first list of neighboring cells received from the first network node to provide idle mode mobility management for the second radio access technology in the second network,
• wherein the information reading unit and the mobility management unit operate while the wireless communication device is concurrently in communication with the first network and with the second network.