Patent ID: 11950155
Assignee: NOKIA TECHNOLOGIES OY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. An apparatus comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least:
receiving, from a first system comprising a fifth generation core network (5G CN), a PROTOCOL DATA UNIT (PDU) SESSION MODIFICATION COMMAND message comprising an access point name aggregate maximum bit rate (APN-AMBR) value for use in a second system comprising a fourth generation (4G) Evolved Packet System (EPS);
storing the APN-AMBR value as part of a PDU session context, the APN-AMBR value being associated with a quality of service (QoS) flow;
in an instance in which the QoS flow is deleted prior to an inter-system change from the first system to the second system, removing the APN-AMBR value; and
in an instance in which the QoS flow is not deleted and there is an inter-system change from the first system to the second system while the APN-AMBR value is stored as part of the PDU session context, mapping the APN-AMBR value received from the first system to an APN-AMBR value of a default EPS bearer context in the second system.