A session management function (SMF) receives, from an access and mobility management function (AMF), a first request to establish a first session for a wireless device. The first request comprises a cellular internet-of-things (IoT) optimization indication for transfer of data of cellular IoT over a control plane. A second request to establish a second session between the SMF and the UPF is sent to a user plane function (UPF). The data for cellular IoT is received from the UPF via the second session. The data is sent to the AMF via the first session.

Techniques and systems for selectively implementing a silent retry procedure after a voice session has moved from a preferred IP-based system (e.g., 5GS) to a legacy IP-based system (e.g., EPS) are disclosed. The silent retry procedure may be implemented by a UE and/or by a TAS using one or more specific error codes and/or timeouts. In this manner, after a voice session has been redirected or handed over from a preferred system (e.g., 5GS) to a legacy system (e.g., EPS), and based on an issue arising that prevents the voice session from being successfully established thereafter, the UE or the TAS may reattempt to establish the voice session directly in the legacy system, instead of allowing the UE to transition back to the preferred system (e.g., 5GS) after a session failure in the legacy system, which increases the overall success rate of establishing voice sessions.

Techniques and systems for selectively implementing a silent retry procedure after a voice session has moved from a preferred IP-based system (e.g., 5GS) to a legacy IP-based system (e.g., EPS) are disclosed. The silent retry procedure may be implemented by a UE and/or by a TAS using one or more specific error codes and/or timeouts. In this manner, after a voice session has been redirected or handed over from a preferred system (e.g., 5GS) to a legacy system (e.g., EPS), and based on an issue arising that prevents the voice session from being successfully established thereafter, the UE or the TAS may reattempt to establish the voice session directly in the legacy system, instead of allowing the UE to transition back to the preferred system (e.g., 5GS) after a session failure in the legacy system, which increases the overall success rate of establishing voice sessions.

A method for session method, a terminal device and a network device are provided. The method includes: sending, by a terminal device, first information to a first network device, wherein the first indication is used for requesting for establishing a packet data network (PDN) connection; receiving, by the terminal device, second information from the network device, wherein the second information indicates that the request, initiated by the terminal device, for establishing the PDN connection is accepted, the second information includes first indication information for indicating whether a protocol data unit (PDU) session corresponding to the PDN connection supports multi-access (MA) after the terminal devices moves from a 4.sup.th-generation (4G) network to a 5.sup.th-generation (5G) network, and the PDU session, if supporting the MA, is able to implement data transmission with a 3rd generation partnership project (3GPP) network and a non-3GPP network simultaneously.

A method for session method, a terminal device and a network device are provided. The method includes: sending, by a terminal device, first information to a first network device, wherein the first indication is used for requesting for establishing a packet data network (PDN) connection; receiving, by the terminal device, second information from the network device, wherein the second information indicates that the request, initiated by the terminal device, for establishing the PDN connection is accepted, the second information includes first indication information for indicating whether a protocol data unit (PDU) session corresponding to the PDN connection supports multi-access (MA) after the terminal devices moves from a 4.sup.th-generation (4G) network to a 5.sup.th-generation (5G) network, and the PDU session, if supporting the MA, is able to implement data transmission with a 3rd generation partnership project (3GPP) network and a non-3GPP network simultaneously.

Apparatuses, methods, and systems are disclosed for session management function derived core network assisted radio access network parameters. One method includes receiving session management function derived core network assisted radio access network parameters from a session management function. The method includes storing the session management function derived core network assisted radio access network parameters in a protocol data unit session level context. The method includes using the session management function derived core network assisted radio access network parameters to determine an expected session activity behavior parameter set.

Apparatuses, methods, and systems are disclosed for session management function derived core network assisted radio access network parameters. One method includes receiving session management function derived core network assisted radio access network parameters from a session management function. The method includes storing the session management function derived core network assisted radio access network parameters in a protocol data unit session level context. The method includes using the session management function derived core network assisted radio access network parameters to determine an expected session activity behavior parameter set.

Systems and methods are provided for causing a prospective provisioning, in near real-time, of various wireless communication protocol databases based on subscribers meeting particular criteria for respective wireless communication protocols. In operation, some aspects are directed to receiving an indication that a first provisioning client associated with a first subscriber has provisioned a first database to access a first service. In response to the receiving, these aspects include automatically read at least a second database to determine whether the second database has already been provisioned to access the first service. At least partially in response to determining that the second database has not already been provisioned to access the first service, these aspects automatically transmit a request to provision the second database such that at least the first subscriber can access the first service using a second wireless communication protocol and a first wireless communication protocol.

Systems and methods are provided for causing a prospective provisioning, in near real-time, of various wireless communication protocol databases based on subscribers meeting particular criteria for respective wireless communication protocols. In operation, some aspects are directed to receiving an indication that a first provisioning client associated with a first subscriber has provisioned a first database to access a first service. In response to the receiving, these aspects include automatically read at least a second database to determine whether the second database has already been provisioned to access the first service. At least partially in response to determining that the second database has not already been provisioned to access the first service, these aspects automatically transmit a request to provision the second database such that at least the first subscriber can access the first service using a second wireless communication protocol and a first wireless communication protocol.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and equipment for handover are provided. The method includes informing, by a source base station, a source core network whether a direct data forwarding path is available, determining, by the source core network, whether to use direct data forwarding or indirect data forwarding, informing, by the source core network, a target core network of information of direct data forwarding, indirect data forwarding or data forwarding being not possible, informing, by the target core network, a target base station of the information of direct data forwarding, indirect data forwarding or data forwarding being not possible, and allocating, by the target base station, tunnel information for data forwarding.