There are provided measures for improved service continuity with mobile edge computing. Such measures exemplarily comprise detecting a handover of a communication endpoint from a first gateway to a second gateway, determining, whether an ongoing mobile edge computing related application session of said communication endpoint is routed by said first gateway, checking, upon positive result of said determining, whether said ongoing mobile edge computing related application session fulfills a predetermined condition, and initiating, upon positive result of said checking, a swap of said ongoing mobile edge computing related application session from said first gateway and a first mobile edge computing entity connected to said first gateway to said second gateway and a second mobile edge computing entity connected to said second gateway.

A method for controlling a data transmission rate, performed by a session management function (SMF), and includes: according to the maximum data rate for a terminal using a network slice, determining the session aggregate maximum bit rate (session-AMBR) of a packet data unit (PDU) session for the terminal to perform data transmission using the network slice, wherein the session-AMBR of the PDU session is less than or equal to the session-AMBR of a PDU session subscribed to by the terminal.

A method of radio bearer transmission in dual connectivity for a network in a long term evolution (LTE) system is disclosed. The method comprises generating at least a packet data convergence protocol protocol data unit (PDCP PDU) by a PDCP entity of the network corresponding to a radio bearer (RB), and assigning each PDCP PDU with an identity, wherein the identity indicates which PDCP entity the PDCP PDU belongs to.

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. The disclosure provides a method and device for switching a serving cell.

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 network device may receive an indication of movement of a user device, associated with multiple packet data unit (PDU) sessions, from a first radio access network (RAN) to a second RAN, and may maintain, based on the indication, a particular PDU session, of the multiple PDU sessions, associated with a default flow. The network device may release, based on the indication, the multiple PDU sessions other than the particular PDU session, and may handle the multiple PDU sessions, other than the particular PDU session, in accordance with a handling option.

A method of operating a Master gNodeB (MgNB) in a radio access network RAN is disclosed. An indication of a user plane security policy is received from a core network node, wherein the user plane security policy requires user plane integrity protection for a protocol data unit PDU session. Responsive to the user plane security policy requiring user plane integrity protection for the PDU session and responsive to determining that a secondary base station supporting the user plane security policy requiring user plane integrity protection is unavailable, a data radio bearer DRB of the PDU session is established directly between the MgNB and a user equipment UE. Related MgNBs are also discussed.

A session handling method and apparatus, where the method includes: initiating, by a terminal, an application (APP); determining a session type of a packet data unit (PDU) session based on the APP; and sending a first message to an access and mobility management function (AMF) entity, where the first message includes the session type, and the first message is used to request to establish the PDU session of the session type. In the method, a network side can establish the PDU session of the corresponding type based on the session type of the PDU session that is sent by the terminal, in order to establish the PDU session of the correct type for the terminal.

Certain aspects of the present disclosure provide techniques for handling slice information for a roaming user equipment (UE). In some cases, the UE may send, to a network entity, a request with an information element (IE) indicating one or more protocol data unit (PDU) sessions to be transferred from a source network to a target network. After receiving, from the network entity, a response with an IE identifying one or more of the PDU sessions allowed to be transferred to the target network and indicating slice information applicable in the target network for the one or more PDU sessions allowed to be transferred, the UE may update slice information for each of the PDU sessions allowed to be transferred based on the IE in the response.

When an access node is providing a UE with carrier-aggregation service on a PCell in combination with one or more SCells and the UE engages in a voice call including uplink voice communication on the PCell, the access node will determine that there is a threshold high level of IMD on the uplink resulting from concurrent downlink transmissions, and the access node will responsively swap the UE's PCell with one of the UE's one or more SCells. In a representative implementation, the decision to swap these carriers in the UE's connection could be based on a further determination that the level of IMD on the uplink of the SCell is not threshold high.