HSN1 & HSN2

[peanut]

Dears,

Does any one knows why there is two HSN defined for the same cell in Nokia BTS?


Regards,

[ashraferto]

HSN1:
With this parameter you define whether cyclic or random hopping is used in BB hopping group 1 and in RF hopping. Hopping sequence number 1 is used in the frequency hopping sequence generation algorithm and it is located in the Frequency Hopping System 1 (time slots 0 except BCCH time slot).
HSN2:
With this parameter you define whether cyclic or random hopping is used in BB hopping group 2. Hopping sequence number 2 is used in the frequency hopping sequence generation algorithm and it is located in the Frequency Hopping System 2 (time slots 1-7).

[peanut]

Thanks for the answer, could you emphasis on the following, please:

1. What do you mean by RF Hopping, do you mean Synthesized Frequency Hopping (SFH)?
2. Why we would need two HSN in the case of BB Hopping, this in not the case for other vendors like E******* or ********

regards,

[ashraferto]

hi,
for 1st question yes it means SFH
for 2nd question, as you know the BBH divided into two group, one for the 1st TSLs except the the 1st TSL in BCCH TRX, and the other group for all the other TSLs in the TRXs, and this technique only used in nokia, as you said its not used in the other vendors

[peanut]

Thanks again for you prompt answer,

But is there a specific reason to do these split of HSNs?

regards,

[plannerguy]

Hi

if u using BB hopping then HSN1 and HSn2 comes into play. and otherwise RF hop then only HSN1.

in Siemens same was not observed instead u can provide different HSN for 1800 band

Regards
Plannerguy