dimensioning and cost structure analysis of wide area data service network - presentation
DESCRIPTION
This report contains discussion of the radio access network design and the cost structure analysis of different deployment options of Radio Access Technologies (RATs). The objective is to provide specific amount of user, with specific traffic demand and deployment scenario. -- Please contact trough lailiaidi at gmail.com for download requestTRANSCRIPT
IK2514 Wireless Infrastructure Deployment & Economics
Homework 3 Dimensioning and Cost Structure Analysis of Wide Area Data Service Network
Laili Aidi ([email protected]) Communication Systems, School of ICT, KTH
Scenario
Coverage type “Urban”: Population density 2000 / km2, total area 10,000 km2.
Usage type “MBB Substitute”, starting from 5 GB/Month in year 0, increasing prediction 1 GB/Month each year.
User penetration “Substitute_1”: starting from 1 % of total population in year 0, increasing prediction 1% each year.
Operator type “Greenfield”: has to deploy the network from scratch.
RAT options • UMTS Macro • HSDPA Macro • HSDPA Micro
Cost Dimensioning UMTS Macro & HSDPA Macro
Cost Dimensioning (cont.)
HSDPA Micro
Money ?
Approach
1. Coverage (km2) & User demand
Example Year 0: • 20% coverage area means:
20 % x 10,000 km2 = 0 km2 total required coverage • 1 % user penetration means:
1 % x (2,000 x 10,000) = 200,000 total predicted user
0
2000
4000
6000
8000
10000
0
2000
4000
6000
8000
10000
12000
1 2 3 4 5 6
Total Required Coverage (km2)
200000
400000
600000
800000
1000000
1200000
0
200000
400000
600000
800000
1000000
1200000
1400000
1 2 3 4 5 6
Total Predicted User
2. Capacity demand (Mbps)
Example Year 1: Usage per User 6 GB/month/user, thus the user demand (UD1) is:
6 GB/month/user x 1,024 = 6144 MB/month/user As traffic is concentrated in 4 hours / day, thus the user demand in Mbps (UD2) is:
(UD1)/(30 days x 4 hours x 60 minutes x 60 seconds) x 8 = 0.113777778 Mbps/user
Then the capacity demand for the system would be: (UD2) x 400000 users = 45511.1 Mbps
18962.9
45511.1
79644.4
121362.9
170666.7
227555.6
0
50000
100000
150000
200000
250000
1 2 3 4 5 6
Total Capacity Demand (Mbps)
Approach
3. Total equipment demand for each RAT option
Coverage achieved (CvTot) Coverage achieved by BTS deployment, would be:
Cv = Maximum cell range * Amount of BTS Thus, total Coverage achieved on that year (CvTot) would be:
CvTot = Cv + CvTot last years
Capacity achieved (CpTot) Capacity achieved by BTS deployment (Cp1) would be:
Cp1 = Maximum capacity * Amount BTS
Capacity achieved by add cell deployment (Cp2) would be: Cp2 = Maximum capacity * Cell
Where Add.Cell (Cell) is: Cell = Amount of (Cp) BTS * (6-1)
Thus, total Capacity achieved on that year (CpTot) would be: CpTot = Cp1 + Cp2 + CpTot last years
Approach
Data Line (DL) DL = (Cp1 + Cp2) / Data line capacity
Site installation (SI) and Site build out (SB) SI or SB = Amount of BTS purchased
Site Lease (SL) and Electricity (EL) SL or EL = Amount of BTS purchased + Amount of BTS purchased last year
Leased Line (LL) LL = CpTot / Leased line capacity
Approach
Result - UMTS Macro
BTS & Add Cell Demand
Installation - Built Out and Running Demand
Result - HSDPA Macro
BTS & Add Cell Demand
Installation - Built Out and Running Demand
Result - HSDPA Micro
BTS Demand
Installation - Built Out and Running Demand
Comparison
Comparison (cont.)
4. CAPEX, OPEX, and Total Cost
CAPEX = (RTE Cost) + (Installation & Build out Cost) OPEX = Running Cost + (10 % x CAPEX)
Total Cost = CAPEX + OPEX
Approach
5. NPV for each RAT option: Financial Viability
PV = CF / (1 + r)^n NPV = PV0 + PV1 + .. + PV5
Approach
UMTS Macro: - High Add. Cell needs - High RTE cost, - High Installation & Build out cost - Sharp increasing of OPEX HSDPA Micro: - Highest BTS deployment needs - High Installation & Build out cost - Sharp increasing of OPEX - Highest capacity achieved HSDPA Macro: - Less BTS deployment needs - Less CAPEX, - Slow increasing of OPEX - Best NPV
Go for HSDPA Macro !
Conclusion & Recommendation
Thank You!