Enhanced mobility for URLLC services and redundant PDU sessions
In accordance with example embodiments of the invention there is at least a method and apparatus to perform receiving from a network device, by a network node of a communication network, information regarding a secondary packet data unit session request for pairing the secondary packet data unit session with a primary packet data unit session, wherein information comprises an indication of at least one of the packet data unit session pair, a required quality of service or a required redundancy level for the secondary packet data unit session; based on the information, establishing the secondary packet data unit session; based on the establishing, sending towards the network device an indication of the secondary packet data unit session being established; storing the information regarding the secondary packet data unit session request; and forwarding at least part of the information regarding the secondary packet data unit session request to at least one target node during mobility procedure.
1. A method, comprising:
receiving from a network device, by a network node of a communication network, information regarding a secondary packet data unit session request for pairing the secondary packet data unit session with a primary packet data unit session,
wherein information comprises a packet data unit session pair indicator identifying a packet data session pair comprising the primary packet data unit session and the secondary packet data unit session, a required quality of service, and a required redundancy level indicated by a redundant sequence number (RSN) for the secondary packet data unit session;
based on the information, establishing the secondary packet data unit session;
based on the establishing, sending towards the network device an indication of the secondary packet data unit session being established;
storing the information regarding the secondary packet data unit session request; and
forwarding at least part of the information regarding the secondary packet data unit session request to at least one target network node during mobility procedure.
2. The method of claim 1 , wherein the secondary packet data unit session comprises a redundant packet data unit session.
3. The method of claim 2 , comprising:
determining information of at least one of an alternative quality of service, reliability/redundancy capability, and one of a dual connectivity or carrier aggregation configuration the redundant packet data unit session is admitted with.
4. The method of claim 1 , wherein the information comprises at least one of an alternative quality of service or an alternative redundancy level for the paired packet data unit session, and wherein the establishing is performed even though the network device could not fulfill previously requested operations.
5. The method of claim 1 , wherein the information includes an alternative quality of service list.
6. The method of claim 1 , comprising:
configuring a user equipment with handover or conditional handover target network nodes, wherein the configuring comprises configuring the user equipment for prioritizing of target network nodes based on at least one of information of quality of service or information of a redundancy level associated with target network nodes.
7. The method of claim 1 , wherein the establishing comprises:
based on the information, determining whether the at least one of a required quality of service or redundancy level for the secondary packet data unit session can be met; and
establishing the secondary packet data unit session with an alternative quality of service different than the required quality of service for pairing the packet data unit session, or establishing the secondary packet data unit session with an alternative redundancy level different than the required redundancy level.
8. The method of claim 1 , wherein the establishing comprises prioritizing and establishing redundantly the packet data unit session pair indicator with at least one of different software or different hardware for providing an alternative quality of service to provide a higher level of quality of service for the secondary packet data unit session.
9. 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 at least:
receive from a network device information regarding a secondary packet data unit session request for pairing the secondary packet data unit session with a primary packet data unit session,
wherein information comprises a packet data unit session pair indicator identifying a packet data session pair comprising the primary packet data unit session and the secondary packet data unit session, a required quality of service, and a required redundancy level indicated by a redundant sequence number (RSN) for the secondary packet data unit session;
based on the information, establish the secondary packet data unit session;
based on the establishing, send towards the network device an indication of the secondary packet data unit session being established; and
store the information regarding the secondary packet data unit session request; and
forwarding at least part of the information regarding the secondary packet data unit session request to at least one target network node during mobility procedure.
10. The apparatus of claim 9 , wherein the secondary packet data unit session comprises a redundant packet data unit session.
11. The apparatus of claim 10 , wherein the at least one memory storing instructions is executed by the at least one processor, to cause the apparatus to:
determine information of at least one of an alternative quality of service, reliability/redundancy capability, and one of a dual connectivity or carrier aggregation configuration the redundant packet data unit session is admitted with.
12. The apparatus of claim 9 , wherein the information comprises at least one of an alternative quality of service or an alternative redundancy level for the paired packet data unit session, and wherein the establishing is performed even though the network device could not fulfill previously requested operations.
13. The apparatus of claim 9 , wherein the information includes an alternative quality of service list.
14. The apparatus of claim 9 , wherein the information includes an alternative quality of service to be employed for the primary packet data unit session if the secondary protocol data unit session is rejected.
15. The apparatus of claim 9 , wherein the at least one memory storing instructions is executed by the at least one processor, to cause the apparatus to:
configure a user equipment with handover or conditional handover target network nodes, wherein the configuring comprises configuring the user equipment for prioritizing of target network nodes based on at least one of information of quality of service or information of a redundancy level associated with target network nodes.
16. The apparatus of claim 9 , wherein when establishing the secondary packet data unit session, the apparatus is caused to:
based on the information, determine whether the at least one of a required quality of service or redundancy level for the secondary packet data unit session can be met; and
establish the secondary packet data unit session with an alternative quality of service different than the required quality of service for pairing the packet data unit session, or establish the secondary packet data unit session with an alternative redundancy level different than the required redundancy level.
17. An apparatus, comprising:
at least one processor; and
at least one memory including computer program code, where the at least one memory is storing instructions that when executed by the at least one processor cause the apparatus to at least:
send to a network node of a communication network, information regarding a secondary packet data unit session request for pairing the secondary packet data unit session with a primary packet data unit session,
wherein information comprises a packet data unit session pair indicator identifying a packet data session pair comprising the primary packet data unit session and the secondary packet data unit session, a required quality of service, and a required redundancy level indicated by a redundant sequence number (RSN) for the secondary packet data unit session; and
receive from the network node an indication of the secondary packet data unit session being established.
18. The apparatus of claim 17 , wherein the secondary packet data unit session comprises a redundant packet data unit session.
19. The apparatus of claim 17 , wherein the information comprises at least one of an alternative quality of service or an alternative redundancy level for the paired packet data unit session, and wherein the establishing is performed even though the network device could not fulfill previously requested operations.