Wimax_sunjib-bracu
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?
Why do we need a new technology
Undergraduate thesis on
Fixed & Mobile WiMAX deployment in Bangladesh (WiMAX Network Planning for Dhaka city) Supervised by Mrs Sadia Hamid Kazi
Sunjib Kumer Singha Kaisar Hamid
Standards View of Wireless Communicat
WiMAX
WiMAX • Worldwide Interoperability for Microwave Access • State of the art Broadband Wireless Technology • IEEE 802.16d- Fixed WiMAX, IEEE 802.16e-2005- Mobile WiMAX • Standardized & regulated by WiMAX Forum •
Why WiMAX is Special?
OFDM-based physical layer Very high peak data rates Scalable bandwidth and data rate support Adaptive modulation and coding (AMC) Support for TDD and FDD Orthogonal frequency division multiple access (OFDMA) • Flexible and dynamic per user resource allocation • Support for advanced antenna techniques • • • • • •
W iM A X N e tw o rk A rch ite ctu re Internet BS
MS
AAA
MIP -HA
BS
Access network
MS
MS
ASN GW
IP Network
ASP
IP Network
Connectivity service network (CSN ) BS
Access service network (ASN )
OSS /BSS
PSTN
Gateway
3GPP / 3GPP 2
Cell Planning Process
Infinite loop!
Cell Planning Basic
Hexagonal cell
Cell Planning Basic Site
Omni Directional Cell
3 Sectored Cell (120) BTS
Cell Planning Basic Frequency Reuse j i
Cluster (N=3)
B cell = B total
/ N
Because… •overcome the limitations of allocated bandwidth •Minimize the interference •Hence design a planned network
Same set of frequency
Proposed Network Design BTRC Regulations
and 23xx - 23xx MHz ) will be assigned to 2 licensees . A contiguous 30 MHz of unpaired
A services . Per channel bandwidth should be
y of the
either 5 or 10 MHz
18 , 23 , 26 and 38 GHz band to build their own point to point link .
Proposed Network Design Network Design
or our proposed design we have use HiperMAX 4 manufactured by Airspan
Proposed Network Design Network Design e ght
36
HyperMAX4 120 deg 60m
and 2 . 5 GHz od TDD dwidth ( MHz ) 10 e Cellular Environment : Hilly , moderate to heavy tree density / - LOS Range ( km ) 4 . 95 Range ( km ) 44 l Range ( km ) 4 . 95
D
Proposed Network Design Downlink
NLOS
LOS
BS Tx Power Tx Channel Combination Gain Tx AAS Gain AAS Pointing Loss Tx Diversity Gain BS feeder Loss Standard BS Antenna Gain CPE Antenna Gain CPE Feeder Loss Rx Diversity Gain BPSK_1 / 2 Rx Sens
dBm dB dB dB dB dB dBi dBi dB dB dBm
21 . 0206 6 3.3 0 0 1 16 13 0 0 - 95 . 4
21 . 0206 6 3.3 0 0 1 16 13 0 0 - 95 . 4
Downlink Budget
dB
153 . 8
153 . 8
Network Design Uplink CPE Tx Power Tx Subchannelisation Gain Tx Diversity Gain CPE feeder Loss CPE Antenna Gain Standard BS Antenna Gain BS Feeder Loss BS Antenna Array Gain Rx Diversity Gain BPSK_1 / 2 Rx Sens Uplink Budget
EIRP= BS Tx Power+ BS Antenna Gain- BS Feeder Loss = 21.0206+16-1 = 36 . 026 dB
dBm dB dB dB dBi dBi dB dB dB dBm dB
NLOS 23 . 0206 0 0 0 13 16 1 6 3 - 95 . 4 155 . 5
LOS 23 . 0206 0 0 0 13 16 1 6 0 - 95 . 4407 152 . 5
Proposed Network Design VOIP Specification Codec Codec Data Rate (bits/s) VoIP Payload Header Size (octets) Codec Frame Duration (s) Codec Sample Size (octets) Total Payload Size (octets) Required Thruput per call (octets/s) Required Thruput per call (Mb/s) Maximum # simultaneous calls = Erlangs per RF Erlangs per line Maximum Planned VoiP Users per RF Channel
G729 10 ms 8000 40 0.01 10 50 5000 0.04 51 38.9 0.08
486
Proposed Network Design
Range (km)
VoIP Service Flows
Data Service Flows Uplink
(with average 50byte packets) Downlink
(with average 500byte packets)
Modulation Distribution Mod
Uplink
Downlink
Uplink
Downlink
Gross Burst Rate (Mbps)
%age
Net Data %age Rate (Mbps)
Net Data %age Rate (Mbps)
Net Data %age Rate (Mbps)
Net Data Rate (Mbps)
BPSK1/2
5.48
4.95
4.32
17%
0 . 80
20%
2 . 13
17%
1 . 17
20%
2 . 37
QPSK1/2
4.65
4.20
8.64
15%
1.40
16%
4.25
15%
2.35
16%
4.74
QPSK3/4
4.05
3.68
8.64
0%
1.88
0%
6.37
0%
3.52
0%
7.11
16QAM1/2
3.45
3.08
17.28
20%
1.88
21%
8.50
20%
4.69
21%
9.48
16QAM3/4
2.93
2.63
25.92
19%
2.80
19%
12.65
19%
7.04
19%
14.23
64QAM2/3
2.33
2.10
34.56
7%
2.80
6%
16.87
7%
9.39
6%
18.97
64QAM3/4
2.10
1.95
38.88
22%
2.80
18%
18.97
22%
10.56
18%
21.34
Aggregate Capacity (Mbps)
100%
2.07
100%
9.73
100%
5.83
100%
10.92
Max Peak Rate (Mbps)
10.56
21.34
Proposed Network Design Power Required Per BS BS Tx Power in dBm= 21.0206 21.0206 = 10 Log10 (Ptx Log10 (Ptx Ptx = 0.12
)In
our design we have used COST231 HATA Propagation Mod
) = 2.1
Watt
L( dB ) = 46.3 + 33.9 log fMHz − 13.82 log h1 − a (h2 ) + (44.9 − 6.55log h1 ) log dkm − K = 162.95 db
For Urban- Large City (K=-3)
a( h2 ) = [ 1.1log fMHz − 0.7] h2 −[ 1.56 log fMHz −0.8] −15
= -14.95
Frequency f: 1500 – 2500 MHz Base station height h1: 30 – 200 m Mobile station height h2: 1 – 10 m Distance d: 1 – 20 km
Proposed Network Design Area of the Dhaka = 815 km² Population : 11,918,442 BS radius r = 1 . 25 km
Served area by per BS = Needed Cell = Needed BS ( 3 Sectored site ) =
Proposed Network Design
3 Sector per cell Total Cell = 68 Cell Radius = 1 . 25 km
Proposed Network Design Access Frequency Charge
in Taka = STU x CF x BW x AF x BF
Unit=1 US Dollar equivalent BDT @ published by Bangladesh Bank on the last day of each qu ctor for Access Frequency shall be calculated considering the scriber base gned for Access Frequency in MHz Access Frequency= Geographical area of Bangladesh. 50
Proposed Network Design
Microwave Frequency Charg trum Charges in Taka = STU x CF x BW x AF x BF
, U=Spectrum Tariff Unit=1 US Dollar equivalent BDT @ published by Bangladesh on the last day of each quarter. F=Contribution Factor for Microwave Frequency=1 BW=Bandwidth occupied for Microwave Frequency in MHz F=Area Factor for Microwave Frequency Point to Point link=Link Length² x 0.273 mum distance for Link Length shall be 7 km) =Band Factor shall be calculated as per following table:
Proposed Network Design
Transmitted Power Charge
About bracNet
quency Uttara
r with Full control option to POP ( Aarong House & Kaderia Tower ) Banking Mohakhali
or WiMAX network is ongoing Dhanmondi
Motijheel
Eventually ….
ve any RF Planning Software s a complex technology we need more time to examine it going to implement WiMAX network , we are planning to work with them v
Vote of Thanks §Mrs . Sadia Hamid Kazi, Senior Lecturer Dept. of Computer Science & Engineering, BRAC University
§Mustafa M . Husain, Associate Professor Dept. of Electronics & Communication Engineering, East West University
§Md . Manir Hossan Sarkar, Asst. Manager Customer Care & Network Rollout, bracNet
§Kaashif Reza Choudhury, Asst. System Administrator Network Operation Center (NOC), bracNet
?
Why do we need a new technology
Undergraduate thesis on
Fixed & Mobile WiMAX deployment in Bangladesh (WiMAX Network Planning for Dhaka city) Supervised by Mrs Sadia Hamid Kazi
Sunjib Kumer Singha Kaisar Hamid
Standards View of Wireless Communicat
WiMAX
WiMAX • Worldwide Interoperability for Microwave Access • State of the art Broadband Wireless Technology • IEEE 802.16d- Fixed WiMAX, IEEE 802.16e-2005- Mobile WiMAX • Standardized & regulated by WiMAX Forum •
Why WiMAX is Special?
OFDM-based physical layer Very high peak data rates Scalable bandwidth and data rate support Adaptive modulation and coding (AMC) Support for TDD and FDD Orthogonal frequency division multiple access (OFDMA) • Flexible and dynamic per user resource allocation • Support for advanced antenna techniques • • • • • •
W iM A X N e tw o rk A rch ite ctu re Internet BS
MS
AAA
MIP -HA
BS
Access network
MS
MS
ASN GW
IP Network
ASP
IP Network
Connectivity service network (CSN ) BS
Access service network (ASN )
OSS /BSS
PSTN
Gateway
3GPP / 3GPP 2
Cell Planning Process
Infinite loop!
Cell Planning Basic
Hexagonal cell
Cell Planning Basic Site
Omni Directional Cell
3 Sectored Cell (120) BTS
Cell Planning Basic Frequency Reuse j i
Cluster (N=3)
B cell = B total
/ N
Because… •overcome the limitations of allocated bandwidth •Minimize the interference •Hence design a planned network
Same set of frequency
Proposed Network Design BTRC Regulations
and 23xx - 23xx MHz ) will be assigned to 2 licensees . A contiguous 30 MHz of unpaired
A services . Per channel bandwidth should be
y of the
either 5 or 10 MHz
18 , 23 , 26 and 38 GHz band to build their own point to point link .
Proposed Network Design Network Design
or our proposed design we have use HiperMAX 4 manufactured by Airspan
Proposed Network Design Network Design e ght
36
HyperMAX4 120 deg 60m
and 2 . 5 GHz od TDD dwidth ( MHz ) 10 e Cellular Environment : Hilly , moderate to heavy tree density / - LOS Range ( km ) 4 . 95 Range ( km ) 44 l Range ( km ) 4 . 95
D
Proposed Network Design Downlink
NLOS
LOS
BS Tx Power Tx Channel Combination Gain Tx AAS Gain AAS Pointing Loss Tx Diversity Gain BS feeder Loss Standard BS Antenna Gain CPE Antenna Gain CPE Feeder Loss Rx Diversity Gain BPSK_1 / 2 Rx Sens
dBm dB dB dB dB dB dBi dBi dB dB dBm
21 . 0206 6 3.3 0 0 1 16 13 0 0 - 95 . 4
21 . 0206 6 3.3 0 0 1 16 13 0 0 - 95 . 4
Downlink Budget
dB
153 . 8
153 . 8
Network Design Uplink CPE Tx Power Tx Subchannelisation Gain Tx Diversity Gain CPE feeder Loss CPE Antenna Gain Standard BS Antenna Gain BS Feeder Loss BS Antenna Array Gain Rx Diversity Gain BPSK_1 / 2 Rx Sens Uplink Budget
EIRP= BS Tx Power+ BS Antenna Gain- BS Feeder Loss = 21.0206+16-1 = 36 . 026 dB
dBm dB dB dB dBi dBi dB dB dB dBm dB
NLOS 23 . 0206 0 0 0 13 16 1 6 3 - 95 . 4 155 . 5
LOS 23 . 0206 0 0 0 13 16 1 6 0 - 95 . 4407 152 . 5
Proposed Network Design VOIP Specification Codec Codec Data Rate (bits/s) VoIP Payload Header Size (octets) Codec Frame Duration (s) Codec Sample Size (octets) Total Payload Size (octets) Required Thruput per call (octets/s) Required Thruput per call (Mb/s) Maximum # simultaneous calls = Erlangs per RF Erlangs per line Maximum Planned VoiP Users per RF Channel
G729 10 ms 8000 40 0.01 10 50 5000 0.04 51 38.9 0.08
486
Proposed Network Design
Range (km)
VoIP Service Flows
Data Service Flows Uplink
(with average 50byte packets) Downlink
(with average 500byte packets)
Modulation Distribution Mod
Uplink
Downlink
Uplink
Downlink
Gross Burst Rate (Mbps)
%age
Net Data %age Rate (Mbps)
Net Data %age Rate (Mbps)
Net Data %age Rate (Mbps)
Net Data Rate (Mbps)
BPSK1/2
5.48
4.95
4.32
17%
0 . 80
20%
2 . 13
17%
1 . 17
20%
2 . 37
QPSK1/2
4.65
4.20
8.64
15%
1.40
16%
4.25
15%
2.35
16%
4.74
QPSK3/4
4.05
3.68
8.64
0%
1.88
0%
6.37
0%
3.52
0%
7.11
16QAM1/2
3.45
3.08
17.28
20%
1.88
21%
8.50
20%
4.69
21%
9.48
16QAM3/4
2.93
2.63
25.92
19%
2.80
19%
12.65
19%
7.04
19%
14.23
64QAM2/3
2.33
2.10
34.56
7%
2.80
6%
16.87
7%
9.39
6%
18.97
64QAM3/4
2.10
1.95
38.88
22%
2.80
18%
18.97
22%
10.56
18%
21.34
Aggregate Capacity (Mbps)
100%
2.07
100%
9.73
100%
5.83
100%
10.92
Max Peak Rate (Mbps)
10.56
21.34
Proposed Network Design Power Required Per BS BS Tx Power in dBm= 21.0206 21.0206 = 10 Log10 (Ptx Log10 (Ptx Ptx = 0.12
)In
our design we have used COST231 HATA Propagation Mod
) = 2.1
Watt
L( dB ) = 46.3 + 33.9 log fMHz − 13.82 log h1 − a (h2 ) + (44.9 − 6.55log h1 ) log dkm − K = 162.95 db
For Urban- Large City (K=-3)
a( h2 ) = [ 1.1log fMHz − 0.7] h2 −[ 1.56 log fMHz −0.8] −15
= -14.95
Frequency f: 1500 – 2500 MHz Base station height h1: 30 – 200 m Mobile station height h2: 1 – 10 m Distance d: 1 – 20 km
Proposed Network Design Area of the Dhaka = 815 km² Population : 11,918,442 BS radius r = 1 . 25 km
Served area by per BS = Needed Cell = Needed BS ( 3 Sectored site ) =
Proposed Network Design
3 Sector per cell Total Cell = 68 Cell Radius = 1 . 25 km
Proposed Network Design Access Frequency Charge
in Taka = STU x CF x BW x AF x BF
Unit=1 US Dollar equivalent BDT @ published by Bangladesh Bank on the last day of each qu ctor for Access Frequency shall be calculated considering the scriber base gned for Access Frequency in MHz Access Frequency= Geographical area of Bangladesh. 50
Proposed Network Design
Microwave Frequency Charg trum Charges in Taka = STU x CF x BW x AF x BF
, U=Spectrum Tariff Unit=1 US Dollar equivalent BDT @ published by Bangladesh on the last day of each quarter. F=Contribution Factor for Microwave Frequency=1 BW=Bandwidth occupied for Microwave Frequency in MHz F=Area Factor for Microwave Frequency Point to Point link=Link Length² x 0.273 mum distance for Link Length shall be 7 km) =Band Factor shall be calculated as per following table:
Proposed Network Design
Transmitted Power Charge
About bracNet
quency Uttara
r with Full control option to POP ( Aarong House & Kaderia Tower ) Banking Mohakhali
or WiMAX network is ongoing Dhanmondi
Motijheel
Eventually ….
ve any RF Planning Software s a complex technology we need more time to examine it going to implement WiMAX network , we are planning to work with them v
Vote of Thanks §Mrs . Sadia Hamid Kazi, Senior Lecturer Dept. of Computer Science & Engineering, BRAC University
§Mustafa M . Husain, Associate Professor Dept. of Electronics & Communication Engineering, East West University
§Md . Manir Hossan Sarkar, Asst. Manager Customer Care & Network Rollout, bracNet
§Kaashif Reza Choudhury, Asst. System Administrator Network Operation Center (NOC), bracNet
?
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