Radio network node, user plane function (UPF) and methods performed therein for paging policy differentiation
A radio network node ( 12 ) in a radio access network (RAN1) and a method therein for Paging Policy Differentiation (PPD). The radio network node receives from a core network (CN1) a Downlink (DL) Protocol Data Unit (PDU) associated with a wireless device ( 10 ). The DL PDU is comprised in a Quality of Service (QoS)-flow, is originated from a respective service and comprises a Paging Policy Indicator (PPI) associated with the respective service. The radio network node extracts the PPI by means of a Central Unit User Plane (CU-UP) ( 12 b ). By means of the CU-UP ( 12 b ), the radio network node informs a Central Unit Control Plane (CU-CP) ( 12 a ) about the PPI. Further, by means of the CU-CP, the radio network node triggers paging of the wireless device. Furthermore, the radio network node pages the wireless device ( 10 ) according to the PPI associated with the respective service.
1. A method performed by a radio network node for paging policy differentiation (PPD), wherein the radio network node is comprised in a radio access network and wherein the method comprises:
receiving from a core network, a downlink (DL) protocol data unit (PDU) associated with a wireless device, wherein the DL PDU is comprised in a Quality of Service flow (QoS flow), wherein the DL PDU is originated from a respective service, and
wherein the DL PDU comprises a paging policy indicator (PPI) associated with the respective service;
extracting the PPI by means of a central unit-user plane (CU-UP) of the radio network node;
by means of the CU-UP, informing a central unit-control plane (CU-CP) of the radio network node about the PPI;
by means of the CU-CP, triggering paging of the wireless device; and
paging the wireless device according to the PPI associated with the respective service.
2. The method of claim 1 , further comprising:
informing the CU-CP of the PPI by using a DL data notification message via an E1 interface, wherein the informing is performed by the CU-UP.
3. The method of claim 1 , further comprising:
receiving, by the CU-UP of the radio network node and via a New Generation User plane (NG-U) interface, the DL PDU from a user plane function (UPF) in the core network.
4. A method performed by a user plane function (UPF) for paging policy differentiation (PPD), wherein the method comprises:
sending a downlink (DL) protocol data unit (PDU) associated with a wireless device to a radio network node in a radio access network, wherein the DL PDU is comprised in a quality-of-service flow (QoS flow), wherein the DL PDU is originated from a respective service, and
wherein the DL PDU comprises a paging policy indicator (PPI) associated with the respective service.
5. The method of claim 4 , further comprising:
sending the DL PDU to a central unit-user plane (CU-UP) of the radio network node, via a New Generation User plane (NG-U) interface.
6. A radio network node for paging policy differentiation (PPD), wherein the radio network node is configured to be comprised in a radio access network and comprises processing circuitry configured to:
receive from a core network, a downlink (DL) protocol data unit (PDU) associated with a wireless device, wherein the DL PDU is comprised in a quality-of-service flow (QoS flow), the DL PDU is originated from a respective service, and the DL PDU comprises a paging policy indicator (PPI) associated with the respective service;
extract the PPI by means of a central unit-user plane (CU-UP) of the radio network node;
by means of the CU-UP, inform a central unit-control plane (CU-CP) of the radio network node about the PPI;
by means of the CU-CP, trigger paging of the wireless device; and
perform paging of the wireless device according to the PPI associated with the respective service.
7. The radio network node of claim 6 , wherein the radio network node is further configured to:
by means of the CU-UP, inform the CU-CP about the PPI by using a DL data notification message via an E1 interface.
8. The radio network node of claim 6 , wherein the radio network node is further configured to:
by the CU-UP of the radio network node, receive the DL PDU from a user plane function (UPF) in the core network via a New Generation User plane (NG-U) interface.
9. A user plane function (UPF) for paging policy differentiation (PPD), wherein the UPF is configured to be comprised in a core network and wherein the UPF comprises processing circuitry configured to:
send a downlink (DL) protocol data unit (PDU) associated with a wireless device to a radio network node that is in a radio access network, wherein the DL PDU is comprised in a quality-of-service flow (QoS flow), wherein the DL PDU is originated from a respective service, and wherein the DL PDU comprises a paging policy indicator (PPI) associated with the respective service.
10. The UPF of claim 9 , wherein the UPF is further configured to:
send the DL PDU to a central unit-user plane (CU-UP) of the radio network node via a New-Generation User plane (NG-U) interface.