This document discusses Long Term Evolution (LTE) as the 4G mobile broadband technology. It provides key specifications of LTE including peak download speeds of 173Mb/s, ultra-low latency below 100ms, support for up to 400 active users per 5MHz of spectrum, and mobility at speeds up to 450km/h. It also compares LTE to WiMAX and discusses options for allocating LTE spectrum in Iraq, including re-allocating the existing 40MHz improperly assigned band to improve spectrum efficiency.

1. Long Term Evolution(LTE)
4G Mobile Broadband

2. LTE Technology in summary
 Technology evolution
 3GPP evolution of the mobile networks
 Technology based three pillars: Flat IP, OFDM, MIMO
 To provide higher data throughput, higher capacity,
Low latency, at lower cost

3. LTE Specifications
 Peak LTE throughput
• Downlink : 173Mb/s 2x2 MIMO; 326Mb/s 4x4 MIMO for 20 MHz
• Uplink: 86Mb/s SIMO
 Spectrum efficiency
• Downlink: 3-4 times HSDPA for MIMO (2,2)
• Uplink: 2-3 times HSUPA for MIMO(1,2)
 Ultra low latency : wired user experience
• Call setup times : < 100ms
• Round trip delay : 10ms from UE to server
 Capacity
• 200 users for 5MHz, 400 users in larger spectrum allocations (active state)
 Mobility
• LTE is optimized for low speeds 0-15km/h but mobility is maintained for speeds up
to 450km/h
• Handover between 3G & LTE
 Frequency Spectrum :
• Scalable bandwidth : 1.4, 2.5, 5, 10, 15, 20MHz
• To cover all frequencies of IMT-2000: 450 MHz to 2.5 GHz

4. Next Generation Mobile Network
(NGMN) Alliance
19 worldwide leading mobile operators

5. LTE Roadmap

6. Why LTE ?
 Improved Quality of Experience & New Services
 With LTE delivering even higher peak throughput and much
lower latency,
 mobile operators (either 3GPP or 3GPP2 based) have a unique
opportunity to evolve their existing infrastructure to next
generation wireless networks
 Deliver their subscriber’s Quality of Experience (QoE)
expectations in terms of real-time services such as Voice Over IP,
Multi-User Gaming Over IP, High Definition Video On Demand
and Live TV
 also continue to improve the quality of delivery for all legacy
applications (e-mail, internet browsing, MMS, etc.

7. LTE VS Wimax
In terms of technology, WiMAX and LTE are very similar
below are major differences
 Long Term Evolution (LTE) started out as a 3GPP project “focused
on enhancing the Universal Terrestrial Radio Access (UTRA) and
optimizing 3GPP’s radio access architecture,” according to the 3GPP
website
 WiMAX evolved from a Wi-Fi, IP-based background. WiMAX went
through several stages of development, yet always used the IEEE
802.16 standard established by the IEEE Standards
 LTE is faster
 WiMAX has more ubiquity

8. LTE VS Wimax
 LTE is designed to be backwards compatible with GSM and HSPA. This
means that when a mobile device exceeds the range of an LTE network, it
can fall back on a 2.5 or 3G network assuming it has the requisite radio
technologies.
 WiMAX standard of 802.16e known as “Mobile WiMAX” is backwards
compatible with the previous WiMAX standard of 802.16d, known as “fixed
WiMAX.”
 LTE require the use of a SIM in order to operate. This will be convenient
for cellular devices that are already compatible with a SIM, but not for
laptops and other technological devices without SIM interfaces
 WiMAX does not require a SIM or any other hardware token. Therefore, all
authentication methods used to identify a customer’s device will be easily
entered into several devices

9. LTE Frequency Spectrum

10. LTE Spectrum for Iraq (Option#1)
 IMT extension can be allocate for FDD LTE to meet
the requirement of High data rate and multimedia
services in Iraq

11. Allocated band of LTE

12. Useable IMT Extension Band for FDD
LTE

13. Wastage of 40 MHz band due to
improper allocation

14. Frequency re-allocation scenario# 1 to
save 40MHz

15. Frequency re-allocation scenario# 2 to
save 40MHz

16. LTE Spectrum for Iraq (Option#2)
 As currently In Iraq IMT core Band is not in use so can
be allocate to 4G LTE