OPTIMIZATION IN OCI HANDLING
A method of optimizing Overload Control Information (OCI) handling for a Control Plane (CP) that has a first association with a first User Plane (UP 1) and a second association with a second User Plane (UP 2) includes: upon receiving from UP 1 an OCI containing i) overload reduction metric defining a target number of sessions for the first association, and ii) a specified period of validity for the OCI handling, initiating a timer for the period of validity for the OCI handling; periodically checking the number of sessions currently being handled by the first association; initiating new sessions with UP 1 if the number of sessions currently being handled by the first association is below the target number of sessions; and not initiating new sessions with the UP 1 if the number of sessions currently being handled by the first association is above the target number of sessions.
1 . A method of optimizing Overload Control Information (OCI) handling in one of 4 th Generation (4G) network or 5 th Generation Core (5GC) network in which a Control Plane (CP) has a first association with a first User Plane (UP 1) and a second association with a second User Plane (UP 2), the method comprising:
receiving, at an initial time point T0 by the CP from the UP 1, an OCI containing i) overload reduction metric defining a specified percentage reduction of a number of sessions handled by the first association such that a target number of sessions for the first association is achieved, and ii) a specified period of validity for the OCI handling;
initiating, by the CP, a timer for a specified period of time corresponding to the period of validity for the OCI handling; and
sending, by the CP, at least one of modification and delete procedures to the UP 1, without initiating new sessions with the UP 1, as part of the OCI handling;.
2 . The method according to claim 1 , further comprising:
periodically checking, by the CP, at subsequent time points T1 through Tn, wherein Tn = the end of the period of validity for OCI, the number of sessions currently being handled by the first association.
3 . The method according to claim 1 , further comprising:
at least one of:
a) initiating, by the CP, new sessions with UP 1, if the number of sessions currently being handled by the first association is below the target number of sessions and the period of validity for the OCI handling has not expired; and
b) sending, by the CP, at least one of additional modification and delete procedures to the UP 1, without initiating new sessions with the UP 1, if the number of sessions currently being handled by the first association is above the target number of sessions and the period of validity for the OCI handling has not expired.
4 . The method of claim 1 , further comprising:
ending the OCI handling at the end of the period of validity for the OCI handling.
5 . The method of claim 1 , further comprising:
initiating, by the CP, new sessions with UP 2, during the period of validity for the OCI handling, if the number of sessions currently being handled by the first association is above the target number of sessions for the first association.
6 . The method according to claim 2 , further comprising:
at least one of:
a) initiating, by the CP, new sessions with UP 1, if the number of sessions currently being handled by the first association is below the target number of sessions and the period of validity for the OCI handling has not expired; and
b) sending, by the CP, at least one of additional modification and delete procedures to the UP 1, without initiating new sessions with the UP 1, if the number of sessions currently being handled by the first association is above the target number of sessions and the period of validity for the OCI handling has not expired.
7 . The method of claim 6 , further comprising:
ending the OCI handling at the end of the period of validity for the OCI handling.
8 . The method of claim 6 , further comprising:
initiating, by the CP, new sessions with UP 2, during the period of validity for the OCI handling, if the number of sessions currently being handled by the first association is above the target number of sessions for the first association.
9 . The method of claim 2 , further comprising:
ending the OCI handling at the end of the period of validity for the OCI handling.
10 . The method of claim 2 , further comprising:
initiating, by the CP, new sessions with UP 2, during the period of validity for the OCI handling, if the number of sessions currently being handled by the first association is above the target number of sessions for the first association.
11 . The method according to claim 1 , further comprising:
initiating, by the CP, new sessions with UP 1, if the number of sessions currently being handled by the first association is below the target number of sessions and the period of validity for the OCI handling has not expired.
12 . The method according to claim 11 , further comprising:
sending, by the CP, at least one of additional modification and delete procedures to the UP 1, without initiating new sessions with the UP 1, if the number of sessions currently being handled by the first association is above the target number of sessions and the period of validity for the OCI handling has not expired.
13 . The method according to claim 12 , further comprising:
periodically checking, by the CP, at subsequent time points T1 through Tn, wherein Tn = the end of the period of validity for OCI, the number of sessions currently being handled by the first association.
14 . The method of claim 13 , further comprising:
ending the OCI handling at the end of the period of validity for the OCI handling.
15 . The method of claim 13 , further comprising:
initiating, by the CP, new sessions with UP 2, during the period of validity for the OCI handling, if the number of sessions currently being handled by the first association is above the target number of sessions for the first association.