Quality of service implementations for separating user plane
Described are techniques for providing, a quality of service (QoS) update from a control plane of a base station to a user plane of the base station based on a QoS event, wherein the QoS update includes information indicative of a mapping between a QoS flow and corresponding radio resources for user data transmission, storing, at the user plane, the mapping between the QoS flow and the radio resources, receiving, at the user plane, a downstream data packet of the QoS flow from a core network, and transmitting the downstream data packet in a downlink direction using the corresponding radio resources.
1. A method of wireless communication, comprising:
receiving, by a user plane of a base station from a user equipment, a data packet on a default data radio bearer (DRB), wherein the data packet includes a quality of service flow indicator (QFI);
sending, to a control plane of the base station, a message that includes the QFI that identifies a Quality of Service (QoS) flow in response to an absence of mapping between the QoS flow and a DRB at the user plane of the base station; and
receiving, by the user plane from the control plane, another message that indicates a mapping relationship between the QoS flow and the DRB.
2. The method of claim 1 ,
wherein the mapping relationship between the QoS flow and the DRB includes one or more bits that indicate that the mapping relationship is symmetric such that the symmetric mapping relationship enables a user equipment to map the QoS flow to a corresponding radio resource for an uplink transmission, and
wherein the one or more bits are transmitted by the user plane of the base station to the user equipment.
3. The method of claim 2 , wherein the one or more bits include an Access-Stratum Reflective indicator.
4. A communication apparatus, comprising:
a processor configured to:
receive, by a user plane of a base station from a user equipment, a data packet on a default data radio bearer (DRB), wherein the data packet includes a quality of service flow indicator (QFI);
send, to a control plane of the base station, a message that includes the QFI that identifies a Quality of Service (QoS) flow in response to an absence of mapping between the QoS flow and a DRB at the user plane of the base station; and
receive, by the user plane from the control plane, another message that indicates a mapping relationship between the QoS flow and the DRB.
5. The communication apparatus of claim 4 ,
wherein the mapping relationship between the QoS flow and the DRB includes one or more bits that indicate that the mapping relationship is symmetric such that the symmetric mapping relationship enables a user equipment to map the QoS flow to a corresponding radio resource for an uplink transmission, and
wherein the one or more bits are transmitted by the user plane of the base station to the user equipment.
6. The communication apparatus of claim 5 , wherein the one or more bits include an Access-Stratum Reflective indicator.