System Manual

BreezeCOMPACT System Manual

Chapter 1: System Description

LTE

1.1

LTE

1.1.1

Introduction to LTE

Long-Term Evolution (LTE), commonly marketed as 4G LTE, is a wireless communication

standard for high-speed data for mobile phones and data terminals. The standard, which was

developed by the 3rd Generation Partnership Project (3GPP), is specified in its Release 8

document series, with enhancements described in later releases.

The key benefits of LTE include:

 Responds to user demand for higher data rates (peak rates) and quality of service

(QoS) that supports up to 20MHz channels in release 8 with Carrier Aggregation

(CA) capabilities supported beginning with release 10

 Addresses continued demand for cost reduction (CAPEX and OPEX).

 Supports both Frequency Division Duplexing (FDD) and Time-Devision Duplex

(TDD).

 IP-based network architecture provides a simpler all-IP architecture that lowers

operating costs.

1.1.2

E-UTRAN Architecture

The LTE radio access network E-UTRAN architecture has been improved from a legacy cellular

radio access (such as 3G) UTRAN network. eNodeB functions in E-UTRAN include not only

legacy base station (NodeB) functions, but also the radio interface and Radio Network

Controllers (RNCs), which include Radio Resource Management (RRM) functions.

Because both WiMAX and E-UTRAN architecture implement a similar approach, it is easier to

migrate WiMAX networks to LTE. For example, Telrad’s BreezeCOMPACT and Dual Mode CPE

solution enables software upgrades from WiMAX to LTE. For more details about WiMAX

migration options, contact Telrad.

Figure 1: E-UTRAN Architecture