METHOD AND APPARATUS FOR DETERMINING AND MANAGING CONGESTION IN A WIRELESS COMMUNICATIONS SYSTEM

摘要

The present invention relates to a network management system and an apparatus improved in the context of IEEE802.11k and IEEE802.11 reference with two new MAC measurement values including good points. The two new measurement values are a WTRU uplink traffic load measurement value and an AP service load measurement value. Normally, other scenarios are able to be applied to the context of OFDM and CDMA 2000 systems however one or more layers (1 and 2) are able to be applied. Therefore, a method for notifying the runaway of a wireless local area network (WLAN) system is provided. Therefore, a method for managing the runaway is introduced. The methods are applied to wireless systems using a carrier sense multiple access/ collision avoidance (CSMA/CA) mechanism. The present methods are effectively executed in the WTRU. [Reference numerals] (AA) BSS node;(S1) Detecting DR in BSS;(S2,S4) Averaging DR in a predetermined time section;(S3) Detecting PER;(S5) AVG, DR > threshold DR?;(S6) AVG, PER > threshold PER?;(S7) Arranging all WTRU of BSS according to time consumed in the retransmission try (long time to short time);(S8) Blocking WTRU from BSS (first large amount)