CE utilisation

[dacoder]

Hi
In our network I observed that UL CE utilisation is much higher than DL CE utilisation. Is this normal ? In BH, average DL CE utilisation of network is around 12% while for UL its around 35%.

Thanks

[tareq1010]

Yes it is normal. The CE consumption in UL is higher than in Dl

[wolverine]

Typically CE cost is proportional to Spreading Factor. As SF is higher in UL (double) the CE utilisation is higher.

Additionally a lot of PS traffic still originates from UEs that are HSDPA capable in the DL but R99 DCH in the uplink. So your DL CE are not affected but your uplink
CE are.

[adewijaya]

for Huawei its NORMAL, CE not consume on DL HSDPA. Huawei separeted CE consumption for this. (pros of huawei equipment). Its took HSDPA CE only on UL CE

[Philippe]

Do not forget that channel element (CE) consumption per service is not standardized but depends on the vendor. Also, some have dedicated boards for HSDPA and/or HSUPA, so not consuming CE. Some need CE for HSUPA (and it i often quite consuming).
So for a vendor not consuming CE for HSDPA, the R99 PS uplink and HSUPA CE consumption will be higher than the DL consumption if a lot of PS services are mapped on dowlink on HSDPA instead of DL R99 PS.

[dacoder]

Hi guys... thanks for the explanation. So for Huawei equipments CE are not consumed for HSDPA? its used only for HSUPA and R99 services?
Anyone have documents explaining this?

Thanks

[agenov]

Hi guys... thanks for the explanation. So for Huawei equipments CE are not consumed for HSDPA? its used only for HSUPA and R99 services?
Anyone have documents explaining this?

Thanks

For HSDPA 1 CE only because of associated DCH channel.

BR

[ahmadruslani]

Hi experts,

one of my nodes has UL CE utilization at 89% during busyhour. What else can I do to reduce it beside take out PS384 and maintain DC HSPA+?

[xantan1977]

HI
For HSDPA, no additional DL CE utilised. So CE is used for RRC,AMR and R99 only while on the UL, HSUPA utilise CE. Hence quite normal to see UL CE utilisation significantly higher than DL CE.

[andoniwireless]

Hi ahmadruslani.. which BBU type do you have (3800 or 3900).. and the question is..

How many CE do you have in UL and DL..?


Regards


Andoni