CE Maximum Usage Vs Air Interface

[yoronjo]

Hi Everyone,

just to ask for your experience with the air interface limit vs the CE capacity

with Huawei's DBS 3900, 4 High capacity Modules can provide a maximum of 1536/1536 UL and DL CE Configuration

On the operator side, this really sounds promising since the operator has the option to expand to such a big amount of capacity

But the thing is, no matter how big the CE capacity, there will always be the air interface capacity which will limit the QoS of HSDPA/WCDMA

I'd like to ask what is the maximum UL CE utilization experienced or measured? (i'm thinking that most probably it won't reach 700 to 750, but just to be sure I'd like to ask for everyone's advice)

Thanks and warmest regards,

yo

[onlygod]

Your operator has the money to buy this many CE? :D The one I'm working for is still stuck on 128CE.

It would be quite interesting to deploy this and see what you get. You are talking about 1 carrier only?

If you had a lot of users, especially HSUPA, you might get to 700, but I don't think that you can go for more than that.

[yoronjo]

Your operator has the money to buy this many CE? :D The one I'm working for is still stuck on 128CE.

It would be quite interesting to deploy this and see what you get. You are talking about 1 carrier only?

If you had a lot of users, especially HSUPA, you might get to 700, but I don't think that you can go for more than that.

On one operator we were nearing 384 UL Consumption, and that is only at 1 carrier. :D (sheesh)

My only concern though is that the air interface will sooner or later get congested even before CE reaches about 600 to 700. I am really curious as to what is the maximum measured CE UL consumptions is.


mine's 384. who's got a higher value? :D:L

[no_1'sfasterthanradiowave]

Very interesting to know you have that many CEs! :o
Speaking of air interface limitations, what is your ENU number set for admission or else - have you disabled CAC?

[kin12345]

power can get congested before it even reach 128 CE.

[adedia]

Don't get amazed with number...
each vendor have their own way of defining CE...
Basically they're the same...

[dekili]

You might have need to have more CEs in UL than in DL if you use HSUPA. There was a thread discussing this issue. I am guessing that you will get power saturated before you use all these CEs...
What calculations had shown that you need so many CEs on a single site?

[RFSTUD]

I am using 128 CE on a site and the air interface is already congested for one or two sectors during busy hour. If I increase the CE for this site to 256 will I still get congestion on the uu?

[dekili]

I am using 128 CE on a site and the air interface is already congested for one or two sectors during busy hour. If I increase the CE for this site to 256 will I still get congestion on the uu?


It will not solve your problem with congestion. Adding CEs will solve baseband congestion (call/session processing) and will not solve problem with your air interface (which has "radio" congestion). To solve problems with the air interface, you should add new codes (traffic channels) to your sectors...

[tukangoptim]

let me give you example my network,

site config:

Max Uplink CE = 1152
Max Downlink CE = 1152
Max Local Cell = 6
HSDPA Function = Yes
Max HSDPA User = Unlimited
HSDPA RRM Package1 = Yes
Max HS-PDSCH Code Number = 90

yesterday load in MB:
CELLNAME PS R99 traffic Hsupa traffic
cell-1 31.598 836.718
cell-2 12.483 131.767
cell-3 23.81 195.423
cell-4 10.785 82.372
cell-5 21.263 215.921
cell-6 14.771 194.246

and the credit used:
CELLNAME VS.LC.ULCreditUsed.CELL.Max
cell-1 192
cell-2 190
cell-3 434
cell-4 172
cell-5 200
cell-6 416


what do y think about it ?

[agenov]

let me give you example my network,

site config:

Max Uplink CE = 1152
Max Downlink CE = 1152
Max Local Cell = 6
HSDPA Function = Yes
Max HSDPA User = Unlimited
HSDPA RRM Package1 = Yes
Max HS-PDSCH Code Number = 90

yesterday load in MB:
CELLNAME  PS R99 traffic Hsupa traffic
cell-1 31.598 836.718
cell-2 12.483 131.767
cell-3 23.81 195.423
cell-4 10.785 82.372
cell-5 21.263 215.921
cell-6 14.771 194.246

and the credit used:
CELLNAME VS.LC.ULCreditUsed.CELL.Max
cell-1 192
cell-2 190
cell-3 434
cell-4 172
cell-5 200
cell-6 416


what do y think about it ?

You killed me. I've never seen such huge configuration. how many simultaneously HSPA users you have? You have two UMTS carriers for HSPA only?

[tukangoptim]

Don't get amazed with number...
each vendor have their own way of defining CE...
Basically they're the same...

when you install 2 board or 768 CE in 1 site,
it doesn't mean every cell can use all max resource.
there is an assignment.. :cool: :cool:

[tukangoptim]

You killed me. I've never seen such huge configuration. how many simultaneously HSPA users you have? You have two UMTS carriers for HSPA only?

yes my friend, this site only use 2 freq, each carrier can bring hspa/voice.
no specific strategy currently..

[dekili]

let me give you example my network,

site config:

Max Uplink CE = 1152
Max Downlink CE = 1152
Max Local Cell = 6
HSDPA Function = Yes
Max HSDPA User = Unlimited
HSDPA RRM Package1 = Yes
Max HS-PDSCH Code Number = 90

yesterday load in MB:
CELLNAME  PS R99 traffic Hsupa traffic
cell-1 31.598 836.718
cell-2 12.483 131.767
cell-3 23.81 195.423
cell-4 10.785 82.372
cell-5 21.263 215.921
cell-6 14.771 194.246

and the credit used:
CELLNAME VS.LC.ULCreditUsed.CELL.Max
cell-1 192
cell-2 190
cell-3 434
cell-4 172
cell-5 200
cell-6 416


what do y think about it ?


I would think that you are not using to many users per cell but your users are heavy data users... You have 2 FSME boards? 72CEs reserved for HSDPA scheduler for DL and 72 CEs in UL? Could you tell us what is the average user behaviour in the network?

[riyantoyadi]

this not correlated between user and load but depend on activity user. Else make sure that counter relevance

[yoronjo]

I would think that you are not using to many users per cell but your users are heavy data users... You have 2 FSME boards? 72CEs reserved for HSDPA scheduler for DL and 72 CEs in UL? Could you tell us what is the average user behaviour in the network?

i think he's using 3 WBBPd Huawei Boards, each having 384CE UL/DL Capacity. The site can go as high as 1536 if you put 4 WbbpD boards. The new Node Bs of Huawei have 4 modules max capacity.

sadly, huawei capacity > NSN capacity :(

@tukangoptim,

do you operate at 60W per sector? :) how many RRUs did you deploy?

amazing. this is the first time i've seen a site go that high in CE config.

did you have any problems with throughput? or is throughput ok also? surely the number of HSPA users would be very big, too.

thanks for the feedback mate!

[agenov]

let me give you example my network,

site config:

Max Uplink CE = 1152
Max Downlink CE = 1152
Max Local Cell = 6
HSDPA Function = Yes
Max HSDPA User = Unlimited
HSDPA RRM Package1 = Yes
Max HS-PDSCH Code Number = 90

yesterday load in MB:
CELLNAME  PS R99 traffic Hsupa traffic
cell-1 31.598 836.718
cell-2 12.483 131.767
cell-3 23.81 195.423
cell-4 10.785 82.372
cell-5 21.263 215.921
cell-6 14.771 194.246

and the credit used:
CELLNAME VS.LC.ULCreditUsed.CELL.Max
cell-1 192
cell-2 190
cell-3 434
cell-4 172
cell-5 200
cell-6 416


what do y think about it ?

just curious about HSUPA traffic is this thousands of Mbytes (i.e Gbytes) or not?

BR
Alex

[tukangoptim]

sorry my friend, so late reply..
@yoronjo: yes you are right it was 3 board. but still using maxtxpwr 43 per cell.
@agenov: hundreds of mb per day. but anyway, it may seems huge but first it is shared among cellgroup, and secondly this is huawei.

[adewijaya]

i think huawei more efficient among the others :victory: