Method and device for controlling congestion in mobile communication system
The present disclosure relates to a method and a device for controlling congestion in a mobile communication system. A method for controlling congestion of a network node according to the present disclosure comprises the steps of: receiving congestion-related information from at least one base station; transmitting a user equipment information request message for making a request for information on a piece of user equipment corresponding to the base station to a mobility management entity; receiving a user equipment information response message including the information on the user equipment corresponding to the base station from the mobility management entity; and transmitting the information on the piece of user equipment corresponding to the base station to another core network node.
1. A method performed by a first network entity for mobility management in a wireless communication system, the method comprising:
receiving, from a second network entity, a subscription request message for an event notification,
wherein the subscription request message includes identification information for a target device and information for a notification condition;
transmitting, to the second network entity, a subscription response message as a response to the subscription request message; and
transmitting, to the second network entity, an event notification message in case that an event for the target device occurs based on the notification condition and an expiry timer is running,
wherein the event for the target device occurs in case that the target device moves into or out of a target area.
2. The method of claim 1 ,
wherein the subscription request message includes information for the target area, and
wherein the information for the target area includes at least one cell identity (ID) or at least one ID of a base station.
3. The method of claim 1 ,
wherein the subscription request message further includes information on the expiry timer.
4. A method performed by a second network entity in a wireless communication system, the method comprising:
transmitting, to a first network entity for mobility management, a subscription request message for an event notification,
wherein the subscription request message includes identification information for a target device and information for a notification condition;
receiving, from the first network entity, a subscription response message as a response to the subscription request message; and
receiving, from the first network entity, an event notification message in case that an event for the target device occurs based on the notification condition and an expiry timer is running,
wherein the event for the target device occurs in case that the target device moves into or out of a target area.
5. The method of claim 4 ,
wherein the subscription request message includes information for the target area, and
wherein the information for the target area includes at least one cell identity (ID) or at least one ID of a base station.
6. The method of claim 4 ,
wherein the subscription request message further includes information on the expiry timer.
7. A first network entity for mobility management in a wireless communication system, the first network entity comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
receive, from a second network entity, a subscription request message for an event notification,
wherein the subscription request message includes identification information for a target device and information for a notification condition,
transmit, to the second network entity, a subscription response message as a response to the subscription request message, and
transmit, to the second network entity, an event notification message in case that an event for the target device occurs based on the notification condition and an expiry timer is running,
wherein the event for the target device occurs in case that the target device moves into or out of a target area.
8. The first network entity of claim 7 ,
wherein the subscription request message includes information for the target area, and
wherein the information for the target area includes at least one cell identity (ID) or at least one ID of a base station.
9. The first network entity of claim 7 ,
wherein the subscription request message further includes information on the expiry timer.
10. A second network entity in a wireless communication system, the second network entity comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit, to a first network entity for mobility management, a subscription request message for an event notification,
wherein the subscription request message includes identification information for a target device and information for a notification condition,
receive, from the first network entity, a subscription response message as a response to the subscription request message, and
receive, from the first network entity, an event notification message in case that an event for the target device occurs based on the notification condition and an expiry timer is running,
wherein the event for the target device occurs in case that the target device moves into or out of a target area.
11. The second network entity of claim 10 ,
wherein the subscription request message includes information for the target area, and
wherein the information for the target area includes at least one cell identity (ID) or at least one ID of a base station.
12. The second network entity of claim 10 ,
wherein the subscription request message further includes information on the expiry timer.