a brief overview on wimax and its implementation

8/7/2019 a brief overview on WiMAX and its implementation

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2

Abstract

� WiMAX Refers to broadband wireless

networks that are based on the IEEE

802.16 standard, which ensurescompatibility and interoperability.



3

Content

� What is WiMAX.

� Features of WiMAX.

� WiMAX in Bangladesh.

� bracNet¶s strategy and services .

� Technology supported by bracNet.

� bracNet¶s Network Architecture.

�Frequency used by bracNet.

� Network Management System of bracNet.

� Installation of a WiMAX Radio/CPE.

� Conclusion.



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What is WIMAX

� WIMAX stands for Worldwide

Interoperability for Microwave

Access(IEEE 802.16).� Frequency bands: 2 to 11GHz for licensed

and 10 to 66GHz for unlicensed bands.



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Features of WiMAX

� WiMAX Standards: fixed WiMAX (IEEE 802.16-d) and

mobileWiMAX (IEEE 802.16-e).

� WiMAX can provide broadband wireless access (BWA)

up to 30 miles (50 km) for fixed stations, and 3 - 10miles (5 - 15 km) for mobile stations.

� Data rate:

For fixed standard up to 75 Mbps per subscriber.

For mobile applications 30Mbps per subscriber.



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WiMAX in Bangladesh

bracNet is the 1st company in Bangladesh usingWiMAX

They are using fixed WiMAX, vendor Alvarion

6 BS (POP) covering Dhaka city. These are in

Mohakhalli, Uttara, khilkhet, Mirpur, Motijhil &Dhanmondi

Each BS covers 25km in 90 degree angel

About 250 SS (CPE) under each BS (LOS)

Datarate:

For CPE 10 Mbps DL and 7.3 Mbps UL

For POP 17.5 Mbps

Covarage area: Dhaka, Sylhet & Chittagong.



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bracNet¶s strategy and

services

� To provide reliable, widespread,convenient and cost effective broadband

internet services.



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Technology supported by

bracNet

� Uses state-of-the-art WiMAXtechnology.

� Quality of Service Mechanisms used

with WiMAX.



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bracNet¶s Network

Architecture



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bracNet¶s Network Architecture-

Functional Entities

� Base station (BS)

� Access service

network (ASN)

� Access service

network gateway

(ASN-GW)

� Connectivity servicenetwork (CSN)



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Frequency used by bracNet

� From BTRC 98 MHz Frequency of 3.5

GHz is used

� Frequency range for this 98 MHz is 3300MHz to 3398 MHz

� This 98 MHz is divided into two parts 56

MHz for large cells and 42 MHz for small

cells

� Channel bandwidth is 3.5 MHz



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Installation of a WiMAX

Radio/CPE� Site survey- Whether the Base Station

is Line of Sight/ Non Line of Sight with

the CPE.



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Radio/CPE� The installation process:

� The place is visited first where the

radio/CPE will mount.� CPE mounting, cabling.



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Radio/CPE� The installation process (Continued):

� Configuration of following parameters-

� 1. Registration parameters:

� a. Common name:

� b. Organization:

� c. Address:

� d. Country:



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� 2. Base Station ID Parameters:

a. Operator ID:16.17.18

b. Sector ID:19.41

c. Cell ID: 21

d. Central Frequency: xyz MHz



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� Link Status : The link status is

checked using telnet.

a brief overview on wimax and its implementation

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