1. Faculty Of Engineering Electrical Engineering Department
An Najah National University
Faculty Of Engineering
Electrical Engineering Department
Nablus-palestine
2010 1

2. Wimax Network Planning For Nablus City
Prepared by Muhammad Hoshiya Jawad ali Muhammad zidat Supervised by Dr. Jamal Khrousheh

3. Sponsored by

4. Objectives
design an optimum mobile and internet network based on WiMAX technology for nablus city
offer high speed internet access
a high quality mobile network based on VoIP technology.
To make us capable to deal with problems and to solve them with scientific approach and with engineering sense

5. Contents: Equipments used in the project. Radio network palnning.
Radio network capacity.
Simulation of network phases.

6. Equipments used in the project:
Airspan hypermax-base station .
HyperMax Base station
Towers with different heights
Feeders with different sizes
Airspan Pro-ST and Easy-ST receivers.
Specifications:
HyperMax base station
Mobile wimax
Yes
Fixed wimax
yes
Frequency bands
2.3GHz, 2.5GHz, 3.3GHz, 3.5GHz, 3.7GHz, 4.9GHz
Channel size
20MHz, 10MHz, 7MHz, 5MHz, 3.5MHz, 1.75MHz
FFT
2.48, 1024, 512, 256
Tx power(frequency band dependant)
Up to 40 dBm
Maximum EiRP per sector
+63 dBm

7. Dual : Vertical and Horizantal
Cont.
Antennas : the antennas we used for our network are J3301xD00 dual polarity 3.5 GHz WIMAX sector antenna . Antenna Specifications
Specifications:
Part number : J3301xD00-xxN
Frequency range
3300 – 3800 MHz
Gain 3.5 GHz
18 (60o) , 16 (90o)
VSWR
< 1.8 : 1
Polarization
Dual : Vertical and Horizantal
Azimuth beamwidth
60o or 90o
Elevation beamwidth 7o
Null Fill
Down to -25o
Sidelobe Superssion
Front –to-back Ratio
Dimension
> 30 dB
> 20 dB
28” x 11” x 6” (711 x 279 x 152mm)

8. Radio network palnning.
The radio network design requirements are related to coverage, capacity and services and they are specified for each area type: dense urban, urban, suburban and rural. Capacity requirements Phase one 1- Data traffic A – residential subscribers : 9000 residential users eachof 1 Mbps, with over subscription rate of 1:20. B - Business subscribers: 1000 business users each of 2 Mbps, with over subscription rate of 1:10. 2–Voice traffic: 40,000 voice subscribers Phase two A – residential subscribers : residential userseach of 1 Mbps, with over subscription rate of 1:20. B - Business subscribers: 2000 business users each of 2 Mbps, with over subscription rate of 1:10. 2 – Voice traffic: 100,000 voice subscribers .

9. Cont. coverage requirements Signal strength levels Phase one
the required percentage of the deep indoor and indoor coverage in this phase will be at least 70 % .
Phase two
the required percentage of the deep indoor and indoor coverage in this phase will be at least 75 % .
Signal strength levels
Required signal strength = - 95 dBm
Estimation of SSdesign
1- Outdoor = -79 dBm.
2- Indoor = -73 dBm.
3- deep Indoor = -58 dBm.

10. Radio network capacity

11. subchannelization

12. Cont.
Capacity of a single base station The bandwidth for each sub-carrier is KHz , then, the bandwidth for each sub-channel will be: * 32 = KHz . For Airspan equipments, the capacity is simply 3.5 bit/Hz of the bandwidth, so, for 350 KHz channel the capacity is: 3.5 * 350*10^3 = Mbps for each sub-channel . For three sector base station the total capacity is (16 * 1.225)*3 = 19.6*3 = 58.8 Mbps .

13. Earlang to bps conversion
In order to complete the capacity estimations we needed to convert the unit earlang to bit per seconed For voice traffic, we have many algorithms for coding and compression of the voice samples, and here we will use G.729(A) algorithm . For G.729(A) coding algorithm, the frame duration is 10 ms as shown in the figure below: Number of frames in one second = 1/ (10 * 10^-3) = 100 Frames,

14. the following table shows the bandwidth of one complete frame:
Total bandwidth per second of call
Each user should have 25 mErlang of capacity, which are equivalent to 90 seconds, from the table above each second is 84.8 Kbit of traffic, So, 90 seconds equal to :
90 * 84.8 = 7632 Kbit = Mbit.
Ethernet protocol overhead per frame
Other overhead per frame
Voice sample size
Frames per second
Total overhead in bits per second
Voice enconding
Total bandwidth per call
26 Bytes
40 Bytes
10 ms
100
(26+40)= 66 B/frame*100 =6600*8bit/B
=52800bps
G.729
32 Kbps
84.8 Kbps

15. Planning of nablus network

16. Simulation of Phase One
Total traffic of all subscribers has been estimated to be as follows: For residential users: 9000*1 Mbps / 20 = 450 Mbps. For business users : 1000*2 Mbps / 10 = 200 Mbps. For voice users : *40000 = Mbit

17. From calculations we found that we need 13 base stations to meet our requirements.

18. From this map we calculate the percentage of the coverage , the following figure show the results with respect to the area of Nablus which is km²

19. Simulation of the second phase
Total traffic of all subscribers has been estimated to be as follows: For residential users : 18000*1 Mbps / 20 = 900 Mbps . For business users : 2000*2 Mbps / 10 = 400 Mbps . For voice users : * 100,000 = Mbit.

20. As a result of increasing number of subscribers in our operator , we need to improve our network in both sides ; capacity and coverage, to be able to serve all needs of subscribers with high quality at all times.
From calculations we find that we need 26 BTS’s to serve this phase
So we add another 13 sites to the original 13 sites from phase one

21. By this distribution of sites our network meets the coverage and capacity requirements for the second phase, The chart bellow shows the percentage of deep indoor, indoor, outdoor, and poor signal levels.

22. And the following chart shows the comparison between phase one and phase two

23. Why WiMAX network is superior the following shows the difference between our network and the currnt GSM network, and a previous study using GSM tech., the table shows the ability of WiMAX to serve large number of subscribers with minimum number of BS’s, with better quality and new services
Current GSM network
Previous study using GSM
WiMAX network
Number of base staions 80 20 26
Number of subscribers
100,000
50,000

24. Thank you ?