Mobility in mobile communications network

The method according to any of the preceding claims, further comprising retrieving (211) information associated with the radio access node (30) and including said information in the presenting (230) of the temporary identifier to a radio access point (40) of the second radio access network (12) when seeking to connect to the second radio access network (12).

The method according any of the preceding claims, wherein the step of presenting (230) the temporary identifier to a radio access point (40) comprises notifying (231) the radio access point (40) of the temporary identifier during an authentication of the user equipment (20) in the second radio access network (12).

A user equipment (20) connectable to a first radio access network (11) arranged to operate according to a first radio access technology, and to a second radio access network (12) arranged to operate according to a second radio access technology, wherein the user equipment (20) is adapted to enable a handover from the first radio access network (11) to thesecond radio access network (12), by comprising a temporary identity handling entity (21) arranged to:

• retrieve, from a radio access node (30) in the radio access network, information associated with an anonymized temporary identifier assigned to the user equipment (20) by the radio access node (30), the temporary identifier representing the user equipment (20) in the first radio access network (11),
• store the information associated with the temporary identifier, and present the temporary identifier to a radio access point (40) of the second radio access network (12) when seeking to connect to the second radio access network (12).

A method for a radio access node (30) of a first radio access network (11) arranged to operate according to a first radio access technology, of enabling handover of connected user equipment (20) from the first radio access network (11) to a second radio access network (12) arranged to operate according to a second radio access technology, the method comprising:

• assigning (310) an anonymized temporary identifier to the user equipment (20) when the user equipment (20) is connected to the first radio access network (11), the temporary identifier representing the user equipment (20) in the first radio access network (11);
• and
• transmitting (320) information associated with the temporary identifier to the connected user equipment (20).

A radio access node (30) of a first radio access network arranged to operate according to a first radio access technology, wherein the radio access node is adapted to enable handover of connected user equipment (20) from the first radio access network (11) to a second radio access network (12) arranged to operate according to a second radio access technology, the radio access node (30) comprising:

• a temporary identifier assignment entity (31) arranged to assign an anonymized temporary identifier to a user equipment (20) connected to the first radio access network (11), and
• a signaling entity (32) arranged to transmit information associated with the temporary identifier to the user equipment.

A method for a radio access point (40) of a second radio access network (12) arranged to operate according to a second radio access technology, of enabling handover of user equipment (20) from a first radio access network (11) arranged to operate according to a first radio access technology to the second radio access network (12), the method comprising:

• receiving (410) an anonymized temporary identifier from user equipment (20) seeking to connect to the second radio access network (12);
• and
• retrieving (420) information associating the temporary identifier with a first radio access network context.

A radio access point (40) of a second radio access network arranged to operate according to a second radio access technology, and adapted to enable handover of a user equipment (20) from a first radio access network (11) arranged to operate according to a first radio access technology to the second radio access network (12), the access point comprising:

• a temporary identifier receiver (41) arranged to receive an anonymized temporary identifier from a user equipment (20) seeking to connect to the second radio access network (12);
• and
• a network context retrievalentity (42) arranged to retrieve information associating the temporary identifier with a first radio access network context.

A user equipment location entity (50) in a mobile communication network (10) adapted to enable handover of at least one user equipment (20) connected to a first radio access network (11) arranged to operate according to a first radio access technology to a second radio access network (12) arranged to operate according to a second radio access technology, the user equipment location entity (50) comprising:

• a temporary identifier location associater (51) arranged to receive information associated with an anonymized temporary identifier assigned to a user equipment (20) from a radio access node (30) of the first radio access network (11), and to generate a first radio access network context for the temporary identifier,
• a memory (52) arranged to store the first radio access network context for the temporary identifier, and
• a user equipment location provider (53) arranged to send the first radio access network context for the temporary identifier to the radio access point (40) of the second radio access network (12) upon receipt of a query from the radio access point (40).