Redundant transmission determination
Method and apparatus may be used for determining whether or not redundant transmission is enabled. One method for determining whether or not redundant transmission is enable includes: receiving trigger information, wherein the trigger information includes at least one of prediction information, load information, QoS information and reliability indication information; and determining whether or not redundant transmission is enabled according to the received trigger information.
1. A method performed by a network apparatus comprising a session management function, a policy control function, or a combination thereof, the method comprising:
receiving, at the network apparatus, at least one trigger information message from at least one functional entity, wherein the trigger information comprises prediction information;
determining, at the network apparatus, whether redundant transmission is enabled for a quality of service flow, a protocol data unit session, or a combination thereof according to the received trigger information message; and
in response to determining that redundant transmission is enabled, initiating at the network apparatus, addition of at least one redundant communication link between the network apparatus and a user plane apparatus of a protocol data unit (PDU) session for a user equipment (UE) so that there are at least two communication links between the network apparatus and the user plane apparatus, wherein the UE is a different device than the network apparatus.
2. The method of claim 1 , wherein the prediction information includes reliability prediction information from the user plane apparatus indicating that a user plane apparatus link or a user plane link is predicted to be unreliable.
3. The method of claim 1 , wherein the prediction information includes load prediction information indicating that the load on a user plane apparatus is predicted to be higher than a predetermined threshold.
4. The method of claim 1 , wherein the prediction information indicates that a protocol data unit session or a quality of service flow is predicted to be unreliable.
5. The method of claim 1 , wherein the trigger information further comprises load information indicating that the load on a user plane apparatus is higher than a predetermined threshold.
6. The method of claim 1 , wherein the trigger information further comprises quality of service information indicating an updated quality of service of a quality of service flow.
7. The method of claim 1 , wherein the trigger information further comprises reliability indication information indicating that the reliability of a service is not satisfied.
8. The method of claim 1 , wherein the method is performed at a session management apparatus.
9. The method of claim 8 , wherein the prediction information is received from a network data analytics apparatus.
10. The method of claim 8 , wherein the trigger information further comprises load information originating from a network repository apparatus, an operation administration and maintenance apparatus or a user plane apparatus.
11. The method of claim 8 , wherein the trigger information further comprises reliability indication information originating from an application server.
12. The method of claim 8 , wherein the trigger information further comprises quality of service information received from a policy control apparatus.
13. The method of claim 1 , wherein the method is performed at a policy control apparatus.
14. The method of claim 13 , further comprising: transmitting a session management policy indicating the determination to a session management apparatus.
15. The method of claim 1 , wherein the redundant transmission is determined for a quality of service flow.
16. An apparatus comprising a network apparatus, the apparatus further comprising:
a session management function, a policy control function, or a combination thereof;
a receiver that receives at least one trigger information message from at least one functional entity, wherein the trigger information comprises prediction information; and
a processor that:
determines whether redundant transmission is enabled for a quality of service flow, a protocol data unit session, or a combination thereof according to the received trigger information message; and
in response to determining that redundant communication link between the network apparatus and a user plane apparatus of a protocol data unit (PDU) session for a user equipment (UE) so that there are at least two communication links between the network apparatus and the user plane apparatus, wherein the UE is a different device than the network apparatus.
17. The apparatus of claim 16 , wherein the prediction information includes reliability prediction information from the user plane apparatus indicating that a user plane apparatus link or a user plane link is predicted to be unreliable.
18. The apparatus of claim 16 , wherein the prediction information includes load prediction information indicating that the load on a user plane apparatus is predicted to be higher than a predetermined threshold.
19. The apparatus of claim 16 , wherein the prediction information indicates that a protocol data unit session or a quality of service flow is predicted to be unreliable.
20. The apparatus of claim 16 , wherein the trigger information further comprises load information indicating that the load on a user plane apparatus is higher than a predetermined threshold.