DATA PACKET LATENCY PARAMETER ACQUISITION METHOD, SYSTEM AND APPARATUS

摘要

Provided in the present application are a data packet latency parameter acquisition method, an apparatus and a system, facilitating an access network element distinguishing latency parameters of data packets of different service flows. The method comprises: a session management network element determining whether there is a first quality of service (QoS) flow meeting a parameter condition, a parameter condition indicating: a first parameter of the first QoS flow being identical to a first parameter of a first service flow, the first parameter of the first QoS flow being used to express information corresponding to transmitting a protocol data unit session anchor (PSA) user plane function (UPF) of the first QoS flow, and the first parameter of the first service flow being used to express information corresponding to transmitting a PSA UPF of the first service flow; if there is no first QoS flow meeting the parameter condition, establishing a second QoS flow for the first service flow, and sending a first message to an access network element, the first message comprising identifier information of the second QoS flow and a data packet latency parameter corresponding to the second QoS flow.