7/14/2016 RRC/RAB establishment failure LTE Knowledge LTE KNOWLEDGE Search this site... 4G LTE CATEGORIES RRC/RAB establishment failure Budi Prasetyo CS NPO 21:25 Problem Description There are some sites get highly RRC/RAB...
More
7/14/2016 RRC/RAB establishment failure LTE Knowledge LTE KNOWLEDGE Search this site... 4G LTE CATEGORIES RRC/RAB establishment failure Budi Prasetyo CS NPO 21:25 Problem Description There are some sites get highly RRC/RAB establishment failure. And the KPI are affected. Handling Process There are not any hardware alarm . And RRC/eRAB Establishment failures happen only start some speci c time. Normally will trace the UU/S1 signaling message to nd the root issue. Solution 1.Check the KPI degraded detail information. We can see there are a remarkably degrade. 2. Trace the S1 signaling message the ,Uu & S1 interface on LTE_Kramerville_SGC_3, and found that that the eNB sends InitialContextSetupFailures to MME with cause 32 i.e. encryption-and-or-integrity-protection-algorithms-not-supported(32) http://www.ltehandbooks.com/2015/09/rrcrabestablishmentfailure.html 1/8
Less
