Certain aspects of the present disclosure provide techniques for implementing reflective quality of service (RQoS) in wireless communication systems. A method for implementing RQoS that may be performed by a user equipment (UE) generally includes receiving a plurality of downlink user data packets from a first base station (BS), determining at least one reflective quality of service (RQoS) mapping rule for one or more uplink packet transmissions based on a subset of the plurality of downlink user data packets, filtering the plurality of downlink user data packets based on the at least one RQoS mapping rule, and forwarding the plurality of downlink user data packets to a corresponding application entity of the UE based on the filtering.

There is provided a method at a first network node, comprising: receiving, from a second network node, a message comprising a requested quality of service (QoS) profile and one or more alternative QoS profiles, wherein the QoS profiles are associated with a communication with a user equipment; determining that the requested QoS profile cannot be provided by the first network node for a communication between the first network node and the user equipment; determining that at least one of the one or more alternative QoS profiles can be provided by the first network node for a communication between the first network node and the user equipment; transmitting, to the second network node, an indication that an alternative QoS profile can be provided by the first network node; and, transmitting, to the second network node, an indication for configuring the user equipment based on the requested QoS profile.

A first base station receives a second base station addition request. The second base station addition request indicates for each packet flow of packet flows of a wireless device: whether each packet flow is for at least one vehicle-to-everything (V2X) service; and a quality-of-service indicator of each packet flow. An indication of an acceptance or rejection of each packet flow, of the packet flows, is sent based on whether each packet flow is for the at least one V2X service.

Embodiments of apparatus and method for uplink data plane management are disclosed. In one example, a method for handover continuity can include buffering data packets at a user equipment based on a trigger event. The data packets can be mapped to first quality of service flows and associated with first radio resources at a source network node. The method can also include identifying second quality of service flows associated with second radio resources at a target network node. The method can further include remapping from the first quality of service flows to the second quality of service flows. The method can additionally include transmitting the buffered data packets from the user equipment toward the target node based on the remapping.

Disclosed is a method of managing PDU session inter-working in a User Equipment, UE, wherein if the UE changes from WB-N1 mode to NB-S1 mode, then the UE sets the state of any dedicated EPS bearer context to be inactive.

Example communication methods and apparatus are described. One example communication method includes receiving first indication information by a first network element from a second network element, where the first indication information is used to indicate that a current condition supports establishment of a session of a first network for a terminal apparatus. The first network element obtains first quality of service (QoS) control information of a first session of the terminal apparatus after receiving the first indication information, where the first session is a session established by the terminal apparatus by using a second network. The first network element sends the first QoS control information to the second network element.

A network node and method performed thereby, for enabling determination, by a prediction function network node, of a change in QoS of a communication session of a UE. The method includes obtaining information related to the UE communication session, the information including an ID of the UE and an ID of the communication session. The method further comprises determining the target serving cell of the UE and providing the obtained information and an ID of the determined target serving cell to the prediction function network node, thereby enabling the prediction function network node to determine new QoS of the UE communication session when being served by the target serving cell. A prediction function network node and a method performed thereby, and a user equipment and a method performed thereby are also disclosed.

This application provides a communication method, a network element, a terminal apparatus, and a system. The communication method includes: receiving, by a first network element, first indication information from a second network element, where the first indication information is used to indicate that a current condition supports establishment of a session of a first network for a terminal apparatus; obtaining, by the first network element, first quality of service QoS control information of a first session of the terminal apparatus after receiving the first indication information, where the first session is a session established by the terminal apparatus by using a second network; and sending, by the first network element, the first QoS control information to the second network element. The communication method in the embodiments of this application can improve communication efficiency.

Example communication methods and apparatus are described. One example method includes sending a handover request message to a target base station, where the handover request message is used to instruct to hand over a first session of a terminal device from the source base station to the target base station. The handover request message includes first information. The first information includes information about at least one quality of service (QoS) flow in the first session. The first session is a session corresponding to the terminal device. The source base station receives a handover request response message from the target base station, where the handover request response message includes second information. The second information is used to indicate that the target base station accepts a first QoS flow in the first session, and the at least one QoS flow includes the first QoS flow.

A system described herein may provide a technique for the handover of a User Equipment (“UE”) from a first Distributed Unit (“DU”) of a wireless network to a second DU in a manner that minimizes or interruption of the delivery of traffic to the UE. When the UE is attached to a first DU, one or more second DUs may be identified as candidates for attachment to the UE. The one or more second DUs may be pre-loaded with context information and/or traffic for the UE. In some embodiments, a third mesh DU (“MDU”) may be identified as a candidate for attachment to a first MDU that is attached to a second MDU. The third MDU may be pre-loaded with context information and/or traffic for the first MDU.