- This topic has 18 replies, 1 voice, and was last updated 17 years, 3 months ago by
.
-
Posts
-
In Baseband hoping, One TRU use one frequency and in Synthesiser hoping more than one frequency is used in each TRU. the frequency will be changed in each TDMA frame in synthesiser hoping but the same frequency will be used for all TDMA frames in baseband hoping. This could be the simplest to uderstand the difference.
shah alam, from malaysia ? i love this country 🙂
Dear Guys I will like to add few more things from my side.
BBH allocates fixed frequencies to all TRX’s and then TCH hops from one Trx to another Trx.
1.Frequency plaaning is difficult since 1 frequency is amust for 1 TRX
2.Since the number of hopping frequencies depend on the number of trx so C/I comes not so good
and frequency diversity results are not so good.SFH/Rf
1.Good for matured networks
2.easy to plan since each hopping TRX uses onlyvMobile Allocation lists
3.Need to plan BCCH and parameters like HSN and MAIO.johnny,
i would also add that the QoS performances of a well-planned BBH network are usually better than a SFH network.
SFH relies a lot on a regular cell design, in order to provide good QoS. In real networks, it is never so regular (usage of lower/micro layers, presence of high sites, etc…)
BBH relies on human/machine intelligence to plan frequencies where the risk of interference is the lowest, which will always ensure a good QoS.
It is just my opinion of course.
- The forum ‘Telecom Design’ is closed to new topics and replies.
