Section: 5.5.4.7 Abnormal cases on the network side
Content: The following abnormal cases on the network side can be identified: a) Lower layer failure before the RELAY KEY AUTHENTICATION RESPONSE message is received. The network shall abort the authentication and key agreement procedure for 5G ProSe UE-to-network relay or 5G ProSe UE-to-UE relay. b) Collision between the authentication and key agreement procedure for 5G ProSe UE-to-network relay or 5G ProSe UE-to-UE relay and de-registration procedure. The network shall abort the authentication and key agreement procedure for 5G ProSe UE-to-network relay or 5G ProSe UE-to-UE relay and proceed with the UE-initiated de-registration procedure. c) Collision between the authentication and key agreement procedure for 5G ProSe UE-to-network relay or 5G ProSe UE-to-UE relay and other 5GMM procedures other than in item b. The network shall progress both procedures.