Systems and methods for performing cell change to a target cell subject to clear channel assessment

A wireless device for cell change to a cell subject to Clear Channel Assessment (CCA), the wireless device comprising:

• one or more transmitters;
• one or more receivers;
• and
• processing circuitry associated with the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the wireless device to:
• obtain one or more cell change configurations that are related to CCA failures when performing a cell change to a target cell subject to CCA;
• and
• perform a cell change to a desired target cell subject to CCA, wherein:
• performing the cell change comprises performing the cell change based on the one or more cell change configurations, and the one or more cell change configurations comprise one or more fallback parameters related to one or more fallback procedures to be performed by the wireless device in event of failure of the cell change to the target cell subject to CCA,
• the one or more cell change configurations comprise one or more cell change configurations for each of two or more stages of the cell change,
• the one or more cell change configurations comprise one or more preventative parameters related to prevention of the failure of the cell change to the target cell subject to CCA,
• the one or more cell change configurations comprise one or more parameters that prolong a duration of time over which a UE is allowed to attempt to obtain system information of the target cell, and
• the one or more cell change configurations comprise a maximum number of cell change attempts allowed to be performed by the wireless device before a failure of the cell change is declared by the wireless device.

A method performed by a network node for a cellular communications network, the method comprising:

• determining one or more cell change configurations that are related to Clear Channel Assessment (CCA) failures when one or more wireless devices are performing a cell change to a target cell subject to CCA;
• and
• providing the one or more cell change configurations to a wireless device,
• wherein the one or more cell change configurations comprising:
• one or more fallback parameters related to one or more fallback procedures to be performed by the wireless device in event of failure of the cell change to the target cell subject to CCA,
• one or more cell change configurations for each of two or more stages of the cell change, the one or more cell change configurations comprise one or more preventative parameters related to prevention of the failure of the cell change to the target cell subject to CCA,
• the one or more cell change configurations comprise one or more parameters that prolong a duration of time over which a UE is allowed to attempt to obtain system information of the target cell, and
• a maximum number of cell change attempts allowed to be performed by the wireless device before a failure of the cell change is declared by the wireless device.

A network node for a cellular communications network, the network node comprising processing circuitry configured to cause the network node to:

• determine one or more cell change configurations that are related to Clear Channel Assessment (CCA) failures when one or more wireless devices are performing a cell change to a target cell subject to CCA;
• and
• provide the one or more cell change configurations to a wireless device,
• wherein the one or more cell change configurations comprising:
• one or more fallback parameters related to one or more fallback procedures to be performed by the wireless device in event of failure of the cell change to the target cell subject to CCA,
• one or more cell change configurations for each of two or more stages of the cell change,
• the one or more cell change configurations comprise one or more preventative parameters related to prevention of the failure of the cell change to the target cell subject to CCA,
• the one or more cell change configurations comprise one or more parameters that prolong a duration of time over which a UE is allowed to attempt to obtain system information of the target cell, and
• a maximum number of cell change attempts allowed to be performed by the wireless device before a failure of the cell change is declared by the wireless device.