Mobility and/or access selection between cells

A method performed by a network node configured for operation in a first Radio Access Network (RAN) based on a first Radio Access Technology (RAT), the method comprising:

• offloading one or more user equipments from a first cell in the first RAN in accordance with one or more offloading parameters reflecting an offloading policy used for offloading user equipments from at least the first cell, each such user equipment being referred to as an offloaded user equipment;
• determining that the one or more offloaded user equipments were later refused access in a second cell in a second RAN based on a RAT different than the first RAT, for reasons independent of radio conditions between the second cell and respective ones of the one or more offloaded user equipments, said determining based on receiving one or more reports indicating the refused accesses;
• and
• adjusting the one or more offloading parameters to reduce or prevent offloading from the first cell of the first RAN towards the second cell of the second RAN.

A user equipment configured for operation in a first type of Radio Access Networks (RANs) that are based on a first Radio Access Technology (RAT) and in a second type of RANs that are based on a second RAT, the user equipment comprising:

• transceiver circuitry configured for communicating with radio network nodes in RANs of the first type and with radio network nodes in RANs of the second type;
• and
• processing circuitry operatively associated with the transceiver circuitry and configured to:
• release a connection from a first RAN of the first type, in conjunction with offloading from the first RAN;
• subsequently detect a cell in a second RAN of the second type that satisfies one or more signal quality criteria and attempting access towards the cell as a target cell to be used for connecting to the second RAN;
• receive an access rejection indication from the target cell, indicating that the attempted access was rejected for a reason that is independent of radio conditions between the target cell and user equipment;
• and
• enable modification of one or more offloading parameters in the first RAN by, upon successfully connecting to another cell in the first or second RAN, sending a report for delivery to one or more base stations in the first RAN, the report indicating that the reason the attempted access by the user equipment towards the target cell in the second RAN was rejected was independent of the radio conditions between the target cell and the user equipment.

A network node configured for operation in a first Radio Access Network (RAN) based on a first Radio Access Technology (RAT), the network node comprising:

• communication circuitry configured for at least one of:
• communicating with user equipments in one or more cells of the first RAN, and communicating with one or more other network nodes in the first RAN or in a core network associated with the first RAN;
• and
• processing circuitry operatively associated with the communication circuitry and configured to:
• offload one or more user equipments from a first cell in the first RAN in accordance with one or more offloading parameters reflecting an offloading policy used for offloading user equipments from at least the first cell, each such user equipment being referred to as an offloaded user equipment;
• determine that the one or more offloaded user equipments were later refused access in a second cell in a second RAN based on a RAT different than the first RAT, for reasons independent of radio conditions between the second cell and respective ones of the one or more offloaded user equipments, the determining operation based on receiving one or more reports indicating the refused accesses;
• and
• adjust the one or more offloading parameters to reduce or prevent offloading from the first cell of the first RAN towards the second cell of the second RAN.