Lte performance Analysis on 800 and 1800 mhz Bands



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2.1. 

LTE requirements 

Before the standardization for the LTE in 2004, 3GPP highlighted the most basic re-

quirements for the long term evolution of UTRAN. They are: 

•  LTE system should be packet switched domain optimized 

•  A true global roaming technology with the inter-system mobility with GSM

WCDMA and cdma2000. 

•  Enhanced consumer experience with high data rates exceeding 100 Mbps in DL 

/ 50 Mbps in UL 

•  Reduced latency with radio round trip time below 10 ms and access time below 

300 ms 


•  Scalable bandwidth from 1.4 MHz to 20 MHz 

•  Increased spectral efficiency 

•  Reduced network complexity 

These specifics are based on the visions of 3GPP that concluded in the need of such 

technology to cope up with the growth predictions of the wireless market. [3] 

High data rates and reduced latency are both associated with the better user experience. 

With the development of high end web applications that demand more bandwidth, these 

features become a necessity. Apart from these, the system should also be flexible re-

garding the frequency bands on which the network is deployed with the ability to utilize 

frequency refarming at different frequency bands. Refarming is the change in the condi-




LONG TERM EVOLUTION 

 



tions of frequency usage in a given part of radio spectrum. Refarming 900 MHz GSM 

band together with 800 MHz band is potentially best option as it would provide better 

link budget and greater coverage at comparatively low cost compared to other higher 

frequency bands. LTE would be deployed in spectrum bands as small as 1.25MHz and it 

provides good initial deployment scalability as it can be literally “squeezed” in as the 

GSM spectrum is freed-up, and grow as more spectrum becomes available. These fac-

tors reduce the time advantage of deploying UMTS (HSPA/HSPA+) in the 900 MHz 

band. [4] Further ahead, the elements of the LTE network and its basic functionalities 

are explained. The radio interface technology and LTE radio protocols are also ex-

plained in brief. 




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