how to increase node b capacity?

There are 4 capacity resource in Node B
1. RF Capacity --> Power and Code
2. Baseband Capacity --> CE
3. Transport Capacity --> Iub
4. for HSDPA, you have HSDPA User Number Capacity..


CE is only one capacity resource in 3G

Thanks

Quote:

---

Originally Posted by arisondang

There are 4 capacity resource in Node B
1. RF Capacity --> Power and Code
2. Baseband Capacity --> CE
3. Transport Capacity --> Iub
4. for HSDPA, you have HSDPA User Number Capacity..


CE is only one capacity resource in 3G

Thanks

---

What about power and code capacity? :p

Quote:

---

Originally Posted by _lisi4king

What about power and code capacity? :p

---

Power Capacity :
If your PA is possible to be upgraded, then increase the PA, huawei WRFU/MRFU can be up to 80 W per PA Module,
If not, splitting Cell or 2nd Carrier is the solution.

Code Capacity :
Code cannot be upgraded, you have to add more CC (Cell Carrier) with splitting Cell or 2nd Carrier.
But you have another solution instead of them :
1. If many HSDPA User compared than R99 User --> add HSDPA Code
2. If you have only 1 Carrier --> Using Dynamic Code Allocation
3. Disable some of unnecessary PS RAB (ie, disable PS 256 or 384) :)


Thanks

Quote:

---

Originally Posted by arisondang

Power Capacity :
If your PA is possible to be upgraded, then increase the PA, huawei WRFU/MRFU can be up to 80 W per PA Module,
If not, splitting Cell or 2nd Carrier is the solution.

Code Capacity :
Code cannot be upgraded, you have to add more CC (Cell Carrier) with splitting Cell or 2nd Carrier.
But you have another solution instead of them :
1. If many HSDPA User compared than R99 User --> add HSDPA Code
2. If you have only 1 Carrier --> Using Dynamic Code Allocation
3. Disable some of unnecessary PS RAB (ie, disable PS 256 or 384) :)


Thanks

---

Can you describe more detail about Disable some of unnecessary PS RAB (ie, disable PS 256 or 384)

If i disable some RAB's how i will save codes? Does system reserve codes for all RAB's, which enabled in the system?

Quote:

---

Originally Posted by _lisi4king

Can you describe more detail about Disable some of unnecessary PS RAB (ie, disable PS 256 or 384)

If i disable some RAB's how i will save codes? Does system reserve codes for all RAB's, which enabled in the system?

---

Each RAB (CS12.2/CS64/PS64/128/256/384) has code allocation in OVSF Code Tree called as Spreading Factor (SF)

CS 12.2 use SF 128
CS/PS 64 use SF 32
PS 128 use SF 16
PS 256 use SF 8
PS 384 use SF 8

1 SF8= 2xSF16=4xSF32=16xSF128
If you know about code clashes, then
1 PS 384 user occupation = 16 CS AMR users occupation,
meaning that 16 CS AMR code cannot be used due to 1 PS 384 user.

So,
If you disable PS384, you give more space for other RABs..

Thanks

Quote:

---

Originally Posted by arisondang

Each RAB (CS12.2/CS64/PS64/128/256/384) has code allocation in OVSF Code Tree called as Spreading Factor (SF)
So,
If you disable PS384, you give more space for other RABs..

Thanks

---

Which is the command/parameter? Can u do that at cell level only?

BR

Quote:

---

Originally Posted by agenov

Which is the command/parameter? Can u do that at cell level only?

BR

---

Hahaha...
i dont have any idea for this..
I am RF Planner,
let me ask my team and let u know later...

Thanks

Quote:

---

Originally Posted by arisondang

Hahaha...
i dont have any idea for this..
I am RF Planner,
let me ask my team and let u know later...

Thanks

---

:) i have doubts about all this but let's see what your findings are ...

BR

Quote:

---

Originally Posted by agenov

:) i have doubts about all this but let's see what your findings are ...

BR

---

i have found the parameter :
TYPRABBASIC in RNC Parameter

you can use LST TYPRAB,
change/delete RABINDEX which has MAXBITRATE=384000 (if you want to delete PS384)

Thanks

Quote:

---

Originally Posted by arisondang

Each RAB (CS12.2/CS64/PS64/128/256/384) has code allocation in OVSF Code Tree called as Spreading Factor (SF)
.
.
.
So,
If you disable PS384, you give more space for other RABs..

Thanks

---

It not a sollution for me. In our counrty 3 UMTS operator, and if will decrease throughput, subsrubers will move to another operator. It is better to decrease number of users (tilt, CIPICH power), but for the rest - provide good service!