Once the UE reads PSS and SSS, the next step is to select a PLMN in the initial acquisition procedure. UE will first scan all the available frequencies, and selects a cell with strongest frequency and reads SIB1 to identify a network that a cell belongs …
In the previous 2 chapters we learn about MIB and different types of SIBs. In this chapter we shall learn more about SBI1 and SIB2. As these 2 SIBs play an very important rule in UE power On procedure. System Information Block Type 1: (cell selection, …
Once the PLMN is selected, the next step is to select a suitable cell inside that PLMN to camp on. Then after camping on, UE will frequently checks the system information, does measurements on serving cell and neighboring cells. And if there is better cell to …
Introduction: Paging is used to network initiated connection setup. Typically, paging procedure should allow UE to sleep with no receiver processing most of the time and briefly wakeup at predefined time interval to monitor paging information from the network. The eNB will wait for UE inactivity …
In the last chapter we saw about MIB. In this chapter we shall learn about SIB. After initial cell synchronization and reading Master information block, UE will proceed to read system information blocks to obtain important cell access related parameters. There are 13 SIB in 3GPP …
UE when it is switched on, it cannot directly establish a connection with eNB. It needs system information. This system information is divided into MIB and SIB. As said above, there are 2 Types System Information Block available in 4G LTE. They are: 1. MIB: Master …
MAC Layer Function: 1. Mapping between logical channels and transport channel. 2. Multiplexing of MAC SDU form one or more different logical channels onto the transport blocks. 3. Those Transport blocks will be delivered to the physical channel. 4. De-multiplexing for MAC PDUs from transport blocks …
LTE downlink channel mapping: LTE Up link channel Mapping LTE Uplink Information Flow: LTE Downlink channel Information Flow: MAC layer does multiplexing of multiple logical channel into single transport channel. So understanding of LTE channels is important. First, what are channels in LTE? …