Erlang calculation for GSM Network

Hi Waleed and every Body
About Calculating the capacity that the BTS can carry depends on the distribution of TRXs among cells of that BTS, for example if the BTS has a configuration of 3+3+4 the capacity will deffer from that of a configuration of 2+2+6 or 5+5 the reason is the way that the Erlang table calculates the capacity.

Regards
Assem

please..anyone know about the following:
acceptable value of co-channel interference in GSM.

how do they measure co-channel interference..from base station to base station or what

whats we mean when we have A=55.3 erlang as example where A is traffic intensity

N=i^2 + j^2 + i*j..where N is cluster size and (i,j) are +ve
integers..how do we choose i and
j …is (i AND j)determine the
value of N or vice versa

plz reply me ASAP at faris_aas@hotmail.com or here in this forum but i prefere in my email

i need this info too much

thx for all

CAn any one differntiate b/w INAP and CAP ? Primitives as well.

please any one knows where I can find traffic engineering litriture for mobile network

Strictly speaking, it is a dimensionless measurement and represents the continuous use of one voice path.

In practice, the unit is an Erlang and is used to describe the total traffic volume of one hour.

Please see http://www.erlang.com/whatis.html for more information.

Hello,

In case of half rate, a cell can handle twice more calls than in full rate.
On Abis interface, one call will occupy half an Abis nibble instead of a full nibble.

Problem of capacity will occur on the BSC side, depending on your vendor. normally, the BSC board connected to the Abis’s (TSU in alcatel system) is only able to handle a certain amount of calls, regardless whether it is FR or HR. So if you double the number of calls on the Air interface, you need to double your capacity in TSU.

BSC with a more modern conception should be able to cope better with HR (cf. the latest generation “BSC Evolution” for Alcatel)

Regards,

Hello, everybody
i need yours help, because i`m student of telecommunication and information technology enjiner, then i writing my bachelor diplom so i can`t compute my radio network planning project in erlang of 1 pcm would give how many erlang in its. please help me? my yahoo mail is ms_chimgee999@yahoo.com contact me!

My erlang calculator has been sitting idle for quite a while. Let me compute for you:
PCM = 30 channel for voice (1 circuit for signaling is assumed)
Blocking factor =0.01

Erlang of the PCM = 20.33