POLICY NODE, USER PLANE NODE, CONTROL PLANE NODE AND METHODS THEREIN FOR HANDLING QUALITY OF SERVICE IN A WIRELESS COMMUNICATIONS NETWORK

摘要

A method performed by a policy node for handling QoS for data traffic between a UE and an Application Server (AS) node associated with the UE. The policy node receives (401) a first message from a control plane node serving the UE. The first message comprises information indicating one or more available marking types which a user plane node is capable of detecting in the data traffic. The policy node receives (402) a second message from the AS node. The second message comprises information. The information indicates a number of marking types supported by both the UE and the AS node, a UE identifier identifying the UE and a list of QoS profiles associated with the UE. The policy node then decides (403) a marking type and a marking value for each of the QoS profiles based on the information of the first message and the second message. The policy node transmits (405) the decided marking type and marking value for each of the QoS profiles, in a third message to the AS node. The policy node further receives (406) a fourth message from the control plane node. The fourth message comprises a session establishment request with a UE identifier identifying the UE. The session establishment request relates to data traffic between the UE and the AS node. The policy node determines (408) the decided marking type and marking value for each of the QoS profiles associated with the UE identifier. The policy node then transmits (409) a fifth message towards the control plane node. The fifth message comprising a session establishment response for the UE identifier including the marking type and marking value decided for each QoS profile associated with the UE identifier.