Number of sites dimensioning
Before you read this part in 3G Network Planning you should read the below Parts in first
We calculate Npole (downlink) and Mpole( uplink) then calculate traffic per site and have user profile and nmber of users can easily get no of sites needen in downlink and uplink then choose largest number of sites
1-process analysis
1.1 Mpole & Npole calculation
-first step we calculate (Mpole and Npole) for each uplink and downlink
-For each service rate
Mpole=(spreading factor)/((Eb/N0)*activity factor*(1+alpha))
Npole =(spreading factor)/((Eb/N0)*activity factor*(gama+ioc_ior))
Number of channel per cell uplink =Mpole*system load uplink
Number of channel per cell downlink =Npole*system load downlink
-then get traffic per cell using erlangb (number of channels and Gos)
-Then calculate traffic per site.
Traffic per site =traffic per cell*number of cells per site
-Then calculate traffic per user:
Traffic per user =(avg number of calls per day* avg call duration in minutes) / (24*60)
-Then calculate number of users per site
number of users per site =(traffic per site)/(traffic per user)
-fnally calculate total number of sites
number of sites =(total number of users)/(number of users per site)
2-Radius & number of sites Calculation:
Simply we choose The large number of sites of both uplink and downlink.
3-Final step
At the end of both Coverage Phase and Capacity Phase it is time to find the exact number of site needed to cover the required area.
From the coverage phase we choose the minimum maximum allowable path loss and calculate the radius of site and number of sites needed based on coverage analysis.
From the capacity phase we fine the needed sites per each service and take the real number of their summation and then calculated the range of site based on capacity analysis.
After this we take the largest number of both coverage and capacity and this number is the exact site needed based on nominal planning.
hope this detailed in UMTS Planning be helpful for you , and all the 7 Parts are good in explaining,, for any question please Comment here or ask our team on facebook page
We calculate Npole (downlink) and Mpole( uplink) then calculate traffic per site and have user profile and nmber of users can easily get no of sites needen in downlink and uplink then choose largest number of sites
1-process analysis
1.1 Mpole & Npole calculation
-first step we calculate (Mpole and Npole) for each uplink and downlink
-For each service rate
Mpole=(spreading factor)/((Eb/N0)*activity factor*(1+alpha))
Npole =(spreading factor)/((Eb/N0)*activity factor*(gama+ioc_ior))
Number of channel per cell uplink =Mpole*system load uplink
Number of channel per cell downlink =Npole*system load downlink
-then get traffic per cell using erlangb (number of channels and Gos)
-Then calculate traffic per site.
Traffic per site =traffic per cell*number of cells per site
-Then calculate traffic per user:
Traffic per user =(avg number of calls per day* avg call duration in minutes) / (24*60)
-Then calculate number of users per site
number of users per site =(traffic per site)/(traffic per user)
-fnally calculate total number of sites
number of sites =(total number of users)/(number of users per site)
2-Radius & number of sites Calculation:
Simply we choose The large number of sites of both uplink and downlink.
3-Final step
At the end of both Coverage Phase and Capacity Phase it is time to find the exact number of site needed to cover the required area.
From the coverage phase we choose the minimum maximum allowable path loss and calculate the radius of site and number of sites needed based on coverage analysis.
From the capacity phase we fine the needed sites per each service and take the real number of their summation and then calculated the range of site based on capacity analysis.
After this we take the largest number of both coverage and capacity and this number is the exact site needed based on nominal planning.
hope this detailed in UMTS Planning be helpful for you , and all the 7 Parts are good in explaining,, for any question please Comment here or ask our team on facebook page