Wireless user equipment (ue) capability data transfer between wireless communication networks

A method of operating a wireless communication network to transfer a capability Identifier (ID) from a wireless user device to another communication network, the method comprising:

• a Radio Access Network (RAN) wirelessly receiving a device ID, a network ID, and the capability ID from the wireless user device and transferring the device ID, the network ID, and the capability ID to an Access and Mobility Management Function (AMF);
• the AMF receiving the device ID, the network ID, and the capability ID, and in response, authorizing the device ID with the other communication network based on the network ID and signaling the RAN to wirelessly serve the wireless user device based on the capability ID;
• the RAN wirelessly serving the wireless user device based on the capability ID;
• and
• the AMF transferring the device ID and the capability ID to the other communication network in response to the RAN serving the wireless user device based on the capability ID.

A wireless communication network to transfer Radio Capabilities Signaling Optimization (RACS) data from a wireless user device to another communication network, the method comprising:

• a Radio Access Network (RAN) configured to wirelessly receive the RACS data from the wireless user device and transfer the RACS data to an Access and Mobility Management Function (AMF);
• the AMF configured to transfer a device ID to the other communication network based on the RACS data, receive a response from the other communication network, and transfer signaling to the RAN to wirelessly serve the wireless user device based on the RACS data;
• the RAN configured to wirelessly serve the wireless user device based on the RACS data responsive to the signaling;
• and
• the AMF configured to transfer the RACS data for the wireless user device to the other communication network in response to the RAN wirelessly serving the wireless user device based on the RACS data.