Method and apparatus for controlling system overload in a wireless communication system

摘要

The present invention relates to a method for controlling system overload in a wireless communication system. The method comprises: a first step in which a mobility management entity (MME) that has received a tracking region update request message from a first terminal transmits a location update request message to a home subscriber server (HSS); a second step in which, if the HSS has determined that a system overload has occurred, the HSS sets MME-backoff time for preventing the transmission of a request message to the HSS, and transmits a location update rejection message including said MME-backoff time to the MME; and a third step in which the MME drives a backoff timer corresponding to said MME-backoff time and rejects a TAU update request message from a terminal received prior to the completion of the driving of the backoff timer.

主权项

1. A method for controlling overload by a mobility management entity (MME) in a wireless communication system, the method comprising:
transmitting a location update request message to a home subscriber server (HSS) if a first terminal transmits a tracking area update (TAU) request message to the MME; receiving a location update reject message including an MME-backoff time and a load factor from the HSS if the system undergoes overload, wherein the MME-backtime is for blocking transmission of a request message to the HSS and the load factor is for indicating a minimum acceptable load from the MME; and starting a backoff timer corresponding to the MME-backoff time and rejecting the TAU request message of the terminal which is received before expiry of the backoff timer, wherein the MME-backoff time is configured based on a number of requests transmitted by the MME and a load degree for processing the requests by the HSS.