Patent ID: 11877178
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method, comprising:
receiving, by a radio access network (RAN) device from a core network (CN) device, a first message, wherein the first message comprises QFI length information of a quality of service (QoS) flow identifier (QFI) associated with downlink transmission of a QoS flow, wherein the CN device and the RAN device are separate devices connected through a next generation (NG) interface, and wherein the CN device includes at least one of a mobility management function (AMF), a session management function (SMF), or a user plane network element (UPF), wherein the QFI length information indicates at least one of: a length value of the QFI, a value range of the QFI, or a length class of the QFI;
sending, by the RAN device to a terminal device, a second message, wherein the second message comprises the QFI length information of the QFI indicating a QFI length determined by the CN device from a plurality of QFI lengths,
wherein the QFI length indicated by the QFI length information of the QFI is a PDU session-specific QFI length, and the PDU session-specific QFI length is used for all QoS flows in a PDU session, or
wherein the QFI length indicated by the QFI length information of the QFI is a QoS flow-specific QFI length, and different QoS flows in the PDU session use different QFI lengths; and
receiving, by the RAN device, a third message from the CN device, the third message includes a QFI mapping relationship of a plurality of QFIs including the QFI, wherein the QFI mapping relationship includes a correspondence between the QFI and the QFI length of the QFI used by at least one QoS flow after the PDU session is modified, and wherein the QFI mapping relationship further includes a second correspondence between a second QFI and a second length used by the at least one QoS flow in the PDU session before the PDU session is modified.