Packet duplication
An access and mobility management function (AMF) receives from a session management function (SMF) a first session configuration request message for a packet duplication of a first session between a user plane function (UPF) and a wireless device. The AMF receives from the SMF, based on traffic load information received at the SMF from the UPF, a first message for activation of a configuration of the packet duplication of the first session of the wireless device. The AMF sends to the SMF a second message indicating a result of the activation of the packet duplication of the first session.
1. A method comprising:
receiving, by an access and mobility management function (AMF) from a session management function (SMF), a first session configuration request message for a packet duplication of a first session between a user plane function (UPF) and a wireless device;
receiving, by the AMF from the SMF based on traffic load information received at the SMF from the UPF, a first message for activation of a configuration of the packet duplication of the first session of the wireless device; and
sending, by the AMF to the SMF, a second message indicating a result of the activation of the packet duplication of the first session.
2. The method of claim 1 , wherein the traffic load information comprises at least one of:
latency information;
a packet loss rate;
a packet delay;
a usage report;
an error indication report;
load control information; or
overload control information.
3. The method of claim 1 , wherein the first session is for an ultra-reliable and low-latency communication service.
4. The method of claim 1 , wherein the activation of the configuration of the packet duplication is based on at least one of:
a service type of the first session;
a traffic status of an N3 interface;
a network slice type of the first session;
a hardware load state in a first access node; or
a quality of service of the first session.
5. The method of claim 1 , further comprising:
sending, by the AMF to a first access node, a third message indicating the activation of the packet duplication of the first session; and
receiving, by the AMF from the first access node, a response message indicating a completion of the activation.
6. The method of claim 1 , wherein the configuration of the packet duplication comprises a configuration of a second session for the packet duplication of the first session.
7. The method of claim 6 , further comprising:
sending, by the AMF to the SMF, a first session configuration response message indicating a response for the first session configuration request message.
8. The method of claim 7 , further comprising:
sending, by the AMF to a first access node, a second session configuration request message for the configuration of the packet duplication; and
receiving, by the AMF from the first access node, a second session configuration response message indicating a response of the second session configuration request message.
9. The method of claim 1 , further comprising:
receiving, by the AMF from the SMF, a configuration request message comprising at least one of:
a first uplink transport network layer (TNL) address for the first session; or
a second uplink TNL address for a second session, wherein the second session is for the packet duplication of the first session; and
sending, by the AMF to the SMF, a configuration response message for the configuration request message, the configuration response message comprising at least one of:
a first downlink TNL address for the first session; or
a second downlink TNL address for the second session.
10. The method of claim 1 , further comprising:
receiving, by the AMF from the SMF, a request message indicating deactivation of the packet duplication of the first session; and
sending, by the AMF to the SMF, a response message accepting the deactivation of the packet duplication of the first session.
11. An access and mobility management function (AMF) comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the AMF to perform operations comprising:
receiving, from a session management function (SMF), a first session configuration request message for a packet duplication of a first session between a user plane function (UPF) and a wireless device;
receiving, by the AMF from the SMF based on traffic load information received at the SMF from the UPF, a first message for activation of a configuration of the packet duplication of the first session of the wireless device; and
sending, by the AMF to the SMF, a second message indicating a result of the activation of the packet duplication of the first session.
12. The AMF of claim 11 , wherein the traffic load information comprises at least one of:
latency information;
a packet loss rate;
a packet delay;
a usage report;
an error indication report;
load control information; or
overload control information.
13. The AMF of claim 11 , wherein the first session is for an ultra-reliable and low-latency communication service.
14. The AMF of claim 11 , wherein the activation of the configuration of the packet duplication is based on at least one of:
a service type of the first session;
a traffic status of an N3 interface;
a network slice type of the first session;
a hardware load state in a first access node; or
a quality of service of the first session.
15. The AMF of claim 11 , wherein the operations further comprise:
sending, by the AMF to a first access node, a third message indicating the activation of the packet duplication of the first session; and
receiving, by the AMF from the first access node, a response message indicating a completion of the activation.
16. The AMF of claim 11 , wherein the configuration of the packet duplication comprises a configuration of a second session for the packet duplication of the first session.
17. The AMF of claim 16 , wherein the operations further comprise:
sending, by the AMF to the SMF, a first session configuration response message indicating a response for the first session configuration request message.
18. The AMF of claim 17 , wherein the operations further comprise:
sending, by the AMF to a first access node, a second session configuration request message for the configuration of the packet duplication; and
receiving, by the AMF from the first access node, a second session configuration response message indicating a response of the second session configuration request message.
19. The AMF of claim 11 , wherein the operations further comprise:
receiving, by the AMF from the SMF, a configuration request message comprising at least one of:
a first uplink transport network layer (TNL) address for the first session; or
a second uplink TNL address for a second session, wherein the second session is for the packet duplication of the first session; and
sending, by the AMF to the SMF, a configuration response message for the configuration request message, the configuration response message comprising at least one of:
a first downlink TNL address for the first session; or
a second downlink TNL address for the second session.
20. The AMF of claim 11 , wherein the operations further comprise:
receiving, by the AMF from the SMF, a request message indicating deactivation of the packet duplication of the first session; and
sending, by the AMF to the SMF, a response message accepting the deactivation of the packet duplication of the first session.