Question about 64 and 96 EUL Users

[dadoba]

Hello guys,

Does anyone knows what is necessary beyond the features and Hardware support to configure more than 32 EUL Users?

E/// said something like increase numEagchCodes andnumEhichErgchCodes but as always not clarified how much increase, etc.

Thank you in advance.

[bindi]

Hello guys, Does anyone knows what is necessary beyond the features and Hardware support to configure more than 32 EUL Users? E/// said something like increase numEagchCodes andnumEhichErgchCodes but as always not clarified how much increase, etc. Thank you in advance.

Your question is not very clear...do you need to increase from 32 to 64 users then you need the feature license for 64 and change the adm values to recommended ones.

[wolverine]

Fundamentally every HSUPA user using a cell either as serving or in SHO needs a E-HICH. The E-HICH is shared with the E-RGCH in a single physical channel through the use of signature sequences. Each E-HICH/E-RGCH physical channel suppports 40 signatures. How many of these signatures are allocated to E-HICH and how many are allocated to E-RGCH is controlled via eulNoERgchGroups. This has a recommended value of 16. Therefore using a single E-HICH/E-RGCH physical channel a cell can support 40-16=24 E-HICH therefore 24 EUL users (serving & non-serving). So if for example you want 64 EUL users then you require 3 E-HICH/E-RGCH (using recommended value of eulNoERgchGroups). Failure to configure the required E-HICH resources will lead to blocking.

E-AGCH even though unique per user, can be time-multiplexed and thus serve many users. The more users you time multiplex though, the greater the latency and responsiveness to raises in RoT are slower.

E-RGCH can be shared among many users but doing so might decrease someones grant just because the UE that was sharing the same E-RGCH was causing interference.

The last thing to consider is that by defining multiple E-AGCH and E-HICH/E-RGCH, you are using up codes and power. So you need to consider everything together to get a good balance.