Method and apparatus for session restoration
Embodiments of the present disclosure provide method and apparatus for session restoration. A method performed by a network node includes receiving a first request for setting up a session with required quality of service (QOS) from an application node. The method further includes sending a first response including error information and subscription information of an existing session including a subscription identifier to the application node.
1 . A method performed by a network exposure node, comprising:
receiving from an application node a second request for retrieving subscription data for the application node, wherein the second request comprises identification information of one or more user equipments (UEs); and
sending a second response comprising one or more subscription data created by the application node corresponding to the identification information of one or more UEs to the application node.
2 . The method according to claim 1 , wherein identification information of a UE comprises at least one of:
an Internet protocol version 4 address of the UE,
an Internet protocol domain,
an identifier of the UE,
a MAC address of the UE, or
an Internet protocol version 6 address of the UE.
3 . The method according to claim 1 , wherein the second response further comprises at least one of:
at least one QoS flow status corresponding to the subscription data, or
at least one notification event corresponding to the subscription data.
4 . The method according to claim 1 , wherein the second request is an HTTP GET request and the second response is an HTTP GET response.
5 . The method according to claim 1 , wherein the network exposure node comprises at least one of:
an exposure function node, or
a policy control node.
6 . The method according to claim 5 , wherein the policy control node comprises at least one of:
Policy Control Function (PCF), or
Policy and Charging Rules Function (PCRF).
7 . The method according to claim 5 , wherein the exposure function node comprises at least one of:
Service Capability Exposure Function (SCEF),
Network Exposure Function (NEF), or
SCEF combined with NEF.
8 . The method according to claim 1 , wherein the application node comprises at least one of:
application function,
application server (AS), or
services capability server (SCS).
9 . The method according to claim 1 , wherein the second request is triggered for recovery; and/or wherein the second response comprises queried active subscriptions for the application node.
10 . A method performed by an application node, comprising:
sending a second request for retrieving subscription data for the application node to a network node, wherein the second request comprises identification information of one or more user equipments (UEs); and
receiving a second response comprising one or more subscription data created by the application node corresponding to the identification information of one or more UEs from the network node.
11 . The method according to claim 10 , wherein identification information of a UE comprises at least one of:
an Internet protocol version 4 address of the UE,
an Internet protocol domain,
an identifier of the UE,
a MAC address of the UE, or
an Internet protocol version 6 address of the UE.
12 . The method according to claim 10 , wherein the second response further comprises at least one of:
at least one QoS flow status corresponding to the subscription data, or
at least one notification event corresponding to the subscription data.
13 . The method according to claim 10 , wherein the second request is an HTTP GET request and the second response is an HTTP GET response.
14 . The method according to claim 10 , wherein the network node comprises at least one of:
an exposure function node, or
a policy control node.
15 . The method according to claim 14 , wherein the policy control node comprises at least one of:
Policy Control Function (PCF), or
Policy and Charging Rules Function (PCRF).
16 . The method according to claim 14 , wherein the exposure function node comprises at least one of:
Service Capability Exposure Function (SCEF),
Network Exposure Function (NEF), or
SCEF combined with NEF.
17 . The method according to claim 10 , wherein the application node comprises at least one of:
application function,
application server, or
services capability server.
18 . The method according to claim 10 , wherein the second request is triggered for recovery; and/or wherein the second response comprises queried active subscriptions for the application node.
19 . A network exposure node, comprising:
a processor; and
a memory coupled to the processor, said memory containing instructions executable by said processor, whereby said network exposure node is operative to:
receive from an application node a second request for retrieving subscription data for the application node, wherein the second request comprises identification information of one or more user equipments (UEs); and
send a second response comprising one or more subscription data created by the application node corresponding to the identification information of one or more UEs to the application node.
20 . An application node, comprising:
a processor; and
a memory coupled to the processor, said memory containing instructions executable by said processor, whereby said application node is operative to:
send a second request for retrieving subscription data for the application node to a network node, wherein the second request comprises identification information of one or more user equipments (UEs); and
receive a second response comprising one or more subscription data created by the application node corresponding to the identification information of one or more UEs from the network node.