Example aspects include a method, apparatus, and computer-readable medium for network-triggered reestablishment by a network node of a wireless communication network, comprising transmitting, to a user equipment (UE) in a connected state with a first central unit (CU), an indication to perform a radio resource control (RRC) reestablishment procedure with a second CU. The indication comprises a reestablishment cell identifier. The aspects further include performing the RRC reestablishment procedure with the UE to transfer the UE from the first CU to the second CU using the reestablishment cell identifier.

Example aspects include a method, apparatus, and computer-readable medium for network-triggered reestablishment by a network node of a wireless communication network, comprising transmitting, to a user equipment (UE) in a connected state with a first central unit (CU), an indication to perform a radio resource control (RRC) reestablishment procedure with a second CU. The indication comprises a reestablishment cell identifier. The aspects further include performing the RRC reestablishment procedure with the UE to transfer the UE from the first CU to the second CU using the reestablishment cell identifier.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may transmit configuration information indicating a first precoding matrix indicator (PMI) parameter and a second PMI parameter, wherein the first PMI parameter is associated with non-simultaneous activity of a distributed unit (DU) and a mobile termination (MT), and wherein the second PMI parameter is associated with simultaneous activity of the DU and the MT. The wireless node may perform a communication in accordance with a selected PMI parameter of the first PMI parameter and the second PMI parameter based at least in part on whether the DU and the MT are simultaneously active. Numerous other aspects are described.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may transmit configuration information indicating a first precoding matrix indicator (PMI) parameter and a second PMI parameter, wherein the first PMI parameter is associated with non-simultaneous activity of a distributed unit (DU) and a mobile termination (MT), and wherein the second PMI parameter is associated with simultaneous activity of the DU and the MT. The wireless node may perform a communication in accordance with a selected PMI parameter of the first PMI parameter and the second PMI parameter based at least in part on whether the DU and the MT are simultaneously active. Numerous other aspects are described.

A control plane function node may be used in a Fifth Generation (5G) Non-Standalone (NSA) architecture having Radio Access Network (RAN) level interworking between a Long-Term Evolution (LTE) RAN and a 5G New Radio (NR). The node obtains usage report data which are based on traffic of a user equipment (UE) via primary and secondary Radio Access Technologies (RATs). The node also obtains secondary RAT usage report data which are based on traffic of the UE via the secondary RAT. The node constructs a message which indicates a request for charging based on the usage report data and the secondary RAT usage report data. In constructing the message, the node populates, in association with a corresponding rating group and usage data of the UE, an identifier of a flow or bearer associated with secondary RAT usage, together with the secondary RAT usage report data.

The disclosure relates to a 5.sup.th Generation (5G) or pre-5G communication system for supporting a higher data transfer rate than a 4.sup.th generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments of the disclosure, a method for operating an Access and Mobility Management Function (AMF) node in a wireless communication system is provided. The method includes receiving an N2 Multimedia Broadcast Service (MBS) Protocol Data Unit (PDU) session setup request message for establishing an MBS session from a Session Management Function (SMF) node, transmitting the N2 MBS PDU session setup request message to a base station, receiving an N2 MBS PDU session setup response message from the base station, and transmitting the N2 MBS PDU session setup response message to the SMF node.

A policy transmission method, a policy control function (PCF) network element, and a computer storage medium, where the method includes: obtaining, by a PCF network element, a connection management state of a terminal apparatus, where the connection management state includes a connected mode or an idle mode; and sending, by the PCF network element, policy rule information to the terminal apparatus when the connection management state of the terminal apparatus is the connected mode.

Disclosed is a 5G or a pre-5G communication system provided to support a higher data transmission rate than that of post-4G communication systems such as LTE. A method of operating a network node in a wireless communication system includes: receiving, from at least one user plane function (UPF) instance, a registration request message including UPF profile information of the at least one UPF instance; storing the UPF profile information including UPF service support information for at least one UPF service supported by the at least one UPF instance; receiving, from a session management function (SMF) node, a UPF discovery request message including UPF service information; discovering one or more UPF instance based on the UPF profile information and the UPF service information; and transmitting, to the SMF node, UPF instance information for the one or more UPF instance.

Provided is a communication method performed by a user equipment (UE) to receive a paging message, the communication method including registering to a stand-alone non-public network (SNPN), transmitting, to a session management function (SMF) of the SNPN or an access and mobility management function (AMF) of the SNPN, a protocol data unit (PDU) session establishment request message for requesting subscription to a notification service for receiving a paging message of a public land mobile network (PLMN), registering to the PLMN through the SNPN and a non-3GPP inter-working function (N3IWF) of the PLMN, in a case where a paging event occurs when the UE is in an idle state in the PLMN, receiving the paging message from the AMF of the SNPN having received a notification message based on the notification service, and performing a service request procedure based on the paging message.

In response to a radio link failure between given user equipment and a source access node of a communication system during a data transfer operation over a control plane, a method is provided for recovering the radio link for the given user equipment through a target access node of the communication system. The radio link recovery is enabled via a mobility management node of the communication system using a non-access stratum security context previously established between the given user equipment and the mobility management node.