LTE

Here we discus about LTE Technology, detail on 4G and How to LTE.


MIMO Single User for LTE

SU-MIMO = Single User MIMO It is the most common form of MIMO. Each user is served by only one BS and it occupies the resource exclusively, including time, frequency.

How Data Transmission in UL in LTE?

In UL, the UE has no dedicated resources to transmit directly when new data arrived in the buffer from higher layer.  It requests resources to transmit them.  It receives radio

DL scheduler in LTE

The DL scheduler is spit into 3 functional parts: 1.The Static Scheduler: Which assigns a fixed amount of Transport Blocks as well as PDCCH and PDSCH resources for the BCCH

Radio Bearer in LTE

There are 2 types of Radio Bearers (RB) in LTE:  To carry signaling. There are called the SRB (Signaling Radio Bearer) To carry user data. There are associated with an

What is EPS Bearer in LTE?

EPS is a connection-oriented transmission network and, as such, it requires the establishment of a “virtual” connection between two endpoints (e.g. a UE and a PDN-GW) This virtual connection is

How Synchronization Channel Works in LTE?

After the power on, the UE knows:  the UE category and capability. the preferred PLMN. the carriers. The UE needs to know: The frame synchronization to be able to decode

Synchronization & BCH for TDD Frame in LTE

The Primary synchronization signal (PSS): is placed at the third symbol in subframes #1 and #6. The secondary synchronization signal (SSS): is placed at the last symbol in subframes #0

Random Access Procedure in LTE

When the UE has obtained system information, it has to request an RRCconnection. Like it has no dedicated resources, the UE requests the connection using the Random Access Procedure using

Step of RRC Connection Setup in LTE

When the UE is powered up, it has to be RRC connected to be able to exchange data and signaling with the network. After the RRC connection, the Initial network

System information & DL-SCH data in LTE

System information 1920 bits or 1728 bits are to be transmitted for normal or extended CP resp.. The PBCH is transmitted every 40 ms. The bit scrambling depends on the

How Time structure in LTE?

EUTRAN OFDM symbols have a basic duration of 66.667 ?s. This means up to 2048 complex samples per OFDM symbol in time domain representation. A cyclic prefix is pretended to