What is MIB and SIB in LTE?
MIB or Master Information Block is a very important message or information that is broadcasted by the LTE eNodeB irrespective of any users presence. The MIB is first among the other system information blocks or SIB, which are also broadcasted by the eNodeB.
How many SIB are there in LTE?
13 types
In LTE there are 13 types of SIBs. Each SIB has its own job to do, which means, they are meant to carry information which are related to performing their assigned job. All SIBs are transmitted on BCCH->DL-SCH->PDSCH.
What is R criteria in LTE?
In order to make the decision for reselection. UE will go through a mathematical equation to identify and verify if the ranking and signal strength of neighboring cell is better than the serving cell for a specific amount of time, only then it will perform cell reselection. This brief procedure is termed as R-criteria.
Which SIBs are essential in LTE?
LTE system information blocks-MIB,SIB-1,2,3,4,5,6,7,8,9,10,11. The system information is very essential and the same is broadcasted by LTE eNB over logical channel BCCH. This logical channel information is further carried over transport channel BCH or carried by DL-SCH.
What is SIB4 LTE?
System Information Block Type 4 or with abbreviated version SIB4 contains neighboring cell related information and relevant only for intra-frequency cell re-selection. The message includes cells with specific re-selection parameters as well as blacklisted cells, Physical Cell Identities (PCI) for CSG.
What is qRxLevMin in LTE?
Qrxlevemeas is RSCP level measured by UE and qRxLevMin is the value specified in SIB. The detection measurement of LTE frequencies should be done at least once every 60s for higher priority LTE frequencies. In following condition, detection measurements of lower priority LTE frequency is not required (25.304-5.2.
How does LTE call work?
VoLTE (voice over LTE) refers to voice calls that are made over a 4G LTE network instead of more traditional calls which are made by using CSFB (Circuit-Switched Fall-back), a system that switches back to 2G or 3G technologies just before connecting a call.
Which is the LTE System Information Block ( SIB )?
Carries physical layer information of LTE cell which in turn help receive further SIs, i.e. system bandwidth Contains information regarding whether or not UE is allowed to access the LTE cell. It also defines the scheduling of the other SIBs. carries cell ID, MCC, MNC, TAC, SIB mapping. Carries common channel as well as shared channel information.
How is cell reselection priority determined in LTE SiB6?
LTE SIB6 specifies the WCDMA frequencies (DL ARFCN) and the parameters used for absolute priority based cell reselection. How Cell Reselection Priority is determined ?
When to use sib5 or SiB6 in connected mode?
Carry info. on common physical channels (PICH/AICH/P-CCPCH/PRACH/SCCPCH) for UE (in CONNECTED mode), in the absence of SIB6, UE need to use SIB5 carry fast changing cell parameter informations (uplink interference levels,dynamic persistence value)
What is the ie system information block 7?
The IE includes cell re-selection parameters common for a frequency. 10:BCCH-DL-SCH: SIB7 The IE System Information Block Type 7 contains information relevant only for inter-RAT cell re-selection i.e. information about GERAN frequencies relevant for cell re-selection.
