Using the LTE technology in the construction of wireless communication

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Relevance Suffice it to rapid development of the Internet makes ever

Relevance

Suffice it to rapid development of the Internet makes ever greater

demands for data transfer speed in terms of mobility. mobile communication technology of the 3rd and the younger generations do not always have sufficient speed for streaming video in high definition, the use of cloud services and other demanding tasks speed.
To satisfy these requirements enable mobile network based on the LTE technology.
To ensure good quality of provided access to the Internet, you must take into account the losses resulting from the propagation of signals.
Research carried out in this paper will help to choose the optimal parameters in the construction of wireless networks based on LTE technology.
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Generation of wireless networks

Generation of wireless networks

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In telecommunication , Long-Term Evolution ( LTE ) is a standard

In telecommunication , Long-Term Evolution ( LTE ) is a standard

for high-speed wireless communication for mobile phones and data terminals, based on the GSM / EDGE and UMTS / HSPA technologies.
LTE provides a theoretical peak data rate of up to 326.4 Mbit / s from the base station to the user and to 172.8 Mbit / s in the opposite direction.
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LTE network structure

LTE network structure

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Calculation part. Initial data Calculation of the main parameters of the

Calculation part. Initial data

Calculation of the main parameters of the radio

access using LTE technology in some areas in urban areas.
Area- 100 km2
Population- 250 thousand people
Used frequency band– Band 7(2600MHz).
Used frequency duplex FDD
Downlink: 2500—2570 MHz (using 10 MHz 2500 – 2510)
Uplink: 2620—2690 МГц (using 10 MHz 2620 - 2630)
The average height of the base stations suspension - 50 m.
The average height of the mobile station - 1.5 m.
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Choice of equipment Base frequencies processing unit BBU3900 Radio Module RRU3201 Panels Antenna Kathrein 80010689

Choice of equipment

Base frequencies processing unit BBU3900

Radio Module RRU3201

Panels Antenna Kathrein

80010689
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Calculation of the receiver's sensitivity LI (realization of losses) = 5

Calculation of the receiver's sensitivity

LI (realization of losses) = 5 dB
Ksh

(noise factor) = 7 dB
Kc / w = 16 dB (at QAM64)

The number of used subcarriers

BW - bandwidth

n- sampling rate

The total number of subcarriers

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Calculation of the energy budget for the LTE network Link budget

Calculation of the energy budget for the LTE network

Link budget for

the downlink (base station to subscriber station):

Link budget for upstream direction (from subscriber station to base station):

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Calculation of the coverage area To calculate the level of losses applicable Erceg – Greenstein model.

Calculation of the coverage area

To calculate the level of losses applicable

Erceg – Greenstein model.
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Lmax= 137 дБ To cover the area of 100 km2 in

Lmax= 137 дБ

To cover the area of 100 km2 in size

will require the following number of cells:

Let's calculate the coverage area of a three-sector eNodeB

A plot of the loss of cell radius

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In the following graphs depict the dependence of the loss of

In the following graphs depict the dependence of the loss of

the radio frequency. BS antenna suspension height is taken to be 50 m. Distance from the MS - 1077 m.

At a frequency of 795 MHz to 850 MHz

At a frequency of 2515 MHz to 2665 MHz

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A plot of the loss of the height of the suspension

A plot of the loss of the height of the suspension

at the BS antenna radio frequency of 835 MHz and 2635 MHz at a distance of 1077m.