CE consumption for second carrier

[khaledkhoudi]

Dear Experts,

Please I need your help in this issue. if you add a second carrier, do we need to add the channel element or not ?
If yes, please explain why ??

Waiting for your feedback.

[wolverine]

If you are going to run your second carrier cells off the same baseband module, then you don't need to add channel elements as they are shared across the baseband. However if you are thinking of adding the 2nd carrier then chances are that your traffic is increasing so it is probably wise to increase your CE too.

[khaledkhoudi]

but if the traffic increases, it will be only HS traffic, so i dont need to add CE since the HSDPA doesnt consume CE.

[wolverine]

In that case you don't need to do anything just monitor things closely. Of course you should bear in mind that even HSDPA traffic has a "hidden" impact on your CE and the uplink whether it is HSUPA or just R99 DCH, will also consume CE from the uplink pool. The exact CE dimensionsioning/plannning is very vendor specific so you need to see what limitations you have from that perspective.

[lamagica]

wolverine, do you have some documents regarding ce consumption for different types (hsdpa, hsupa, r99) on uplink and downlink ce..?
it would be great.

[erastus]

Bearers

Number of CEs (4-way diversity)



AMR12.2k

2



CS64k

4



PS64k

4



PS128k

8



PS384k

16





For HSDPA, a DCH is treated as a R99 DCH (in short they use the same number of CEs).
No additional CE is needed for HS-DSCH and HS-SCCH