Method and apparatus for survival time handling for time sensitive connections
A method for time sensitive network (TSN) operation includes: in the case of data traffic stoppage in a communication channel of TSN due to at least one of down time of a user plane (UP) connection and a reset of the UP connection, performing the following: generating, by a user plane function (UPF), an audit report about the at least one of the down time and the reset; sending, by the UPF, the audit report to a first element in control plane (CP), without waiting for communication from the CP; and determining, by one of the first element or a second element in the CP, survival time of the communication channel. The audit report is sent along with a report type indicating the down time of the UP connection due to connection fluctuation or a switch-over of the UP connection from a primary UPF to a back-up UPF.
1. A method for time sensitive network (TSN) operation during data traffic stoppage occurring in a communication channel of TSN due to a down time of a user plane (UP) connection due to a switch-over of the UP connection from a primary user plane function (UPF) to a back-up UPF, comprising:
generating, by a user plane function (UPF), an audit report about the down time of the UP connection due to the switch-over of the UP connection, wherein the audit report is sent along with report type indicating the down time of the UP connection due to the switch-over of the UP connection from the primary user plane function (UPF) to the back-up UPF;
sending, by the back-up UPF, the audit report to a first element in control plane (CP), without waiting for communication from the CP, wherein the first element in the CP is a session management function (SMF); and
determining, by one of the first element or a second element in the CP, survival time of the communication channel.
2. The method according to claim 1 , wherein:
the audit report includes at least one of the following information: operation status, IP address: display name; interface name; virtual routing and forwards (VRF); virtual local area network (VLAN); old physical address; new physical address; protocol type; start time for TSN session; previous down time; and duration of down time.
3. A method for time sensitive network (TSN) operation during data traffic stoppage in a communication channel of TSN due to a down time of a user plane (UP) connection due to connection fluctuation, comprising:
generating, by a user plane function (UPF), an audit report about the down time, wherein the audit report is sent along with a report type indicating the down time of the UP connection due to connection fluctuation, and wherein the audit report includes at least one of the following information: operation status, IP address: display name; interface name; virtual routing and forwards (VRF); virtual local area network (VLAN); physical address; protocol type; start time for TSN session; previous down time; and duration of down time;
sending, by the UPF, the audit report to a first element in control plane (CP), without waiting for communication from the CP, wherein the first element in the CP is a session management function (SMF);
determining, by one of the first element or a second element in the CP, survival time of the communication channel; and
sending, by the SMF to a policy control function (PCF), an update message including the audit report received from the UPF.
4. The method of claim 3 , further comprising:
sending, by the PCF to an application function (AF), a message including the audit report received from the SMF.
5. The method of claim 4 , further comprising:
sending, by the AF to a TSN controller, a hypertext transfer protocol secure (HTTPS) POST request message including the audit report received from the PCF.
6. The method of claim 5 , wherein:
the survival time is determined by one of the SMF or the AF.
7. The method according to claim 2 , further comprising:
sending, by the SMF to a policy control function (PCF), an update message including the audit report received from the back-up UPF.
8. The method of claim 7 , further comprising:
sending, by the PCF to an application function (AF), a message including the audit report received from the SMF.
9. The method of claim 8 , further comprising:
sending, by the AF to a TSN controller, a hypertext transfer protocol secure (HTTPS) POST request message including the audit report received from the PCF.
10. The method of claim 9 , wherein:
the survival time is determined by one of the SMF or the AF.
11. A method for time sensitive network (TSN) operation during data traffic stoppage occurring in communication channel of TSN due to a down time of a user plane (UP) connection due to a switch-over of the UP connection from a primary user plane function (UPF) to a back-up UPF, comprising:
generation, by a user plane function (UPF), an audit report about the down time of the UP connection due to the switch-over of the UP connection, wherein the audit report is sent along with a report type indicating the down time of the UP connection due to the switch-over of the UP connection for the primary user plane function (UPF) to the back-up UPF;
sending, by the back-up UPF, the audit report to a first element in control plane (CP), without waiting for communication from the CP, wherein the first element in the CP is a session management function (SMF); and
determining, by one of the first element or a second element in the CP, survival time of the communication channel, wherein the second element in the CP is an application function (AF).