transmitter & receiver
Hello! A BOIA card (or BCF card) is the Base Station Control Function in a BTS. The BCF is like the BTS's brain, controling, for example, TRx's hopping.
only two trx supported when we use one m2ha.
the basic difference between nokia ultra&flexibts is that ultra can support only12 trx but flexi bts can support 24 trx. i
unction of bb2f in nokia bts to multiyplecsing and conet to boia with trx bb2f is used for digital signal processing and also frequency hopping
main component of nokia bts is 1)trx which contains 8 slots for call receive and transmit to another mobile station through radio interface 2)second one is psu (power supply unit) which produces the power to bts to get the operation 3)third one is bb(base band) card which support two trx in operation 4)rest of parts is boa,coupler,combiner,duplexer etc
The BB2F card in Nokia BTS is a Baseband Processing Unit that handles the digital signal processing tasks for the base station. It controls the radio resources, manages call setups, and processes the data before it is transmitted or received by the radio units. It plays a crucial role in managing the communication between the core network and the radio access network.
The BOIA card in the BTS is for maintaining the total functionality of the BTS. It consists of a local management port(LMP) through which a sysytem can be connected with the BTS and necesssray information can be loaded into it through a special software used to specify the required settings relating the RRI and TRX, synchronization(Rx clock), traffic channel and TRx signalling along with the OMU and EDAP signalling and of course the alarm configuration.
B.t.s
8 calls
TRX stands for TRANSMIT RECEIVER. TRX has different combination depending on the user requirement. 1 trx has 8 TS out of which one is allocated for BCCH.Rest is used for voice trxmns and for data purpose.
You are right about Ultra if and only if you are talking about one cabinet, but regarding Flexi we don't say it can support up to 24 TRS. Plus, Ultrasite Cabinet can support up to 12 TRX. So we measure by cabinet in Ultrasite and we measure by ESMA/ESEA in Flexi. ESMA can manage only up to 12 TRX where it contains only 6 bus and power ports. ESEA Can support up to 24 TRX. But for your info, Flexi modules can be installed in Cabinet, 19" Rack, Stack, Pole and Wall mount depends on the design.
Ultra BTS can support max. of 12 TRx (trancievers), while Flexi can support max. of 24 TRx. Ultrea has drawback that it has all Pin connections on back side, if any of the Pin of a particular slot is damaged then that slot is useless, while in flexi all connections are on front side so it is easy to install every equipment. As an operator wants to cover maximum area he will use flexi. you can say ultra a bts of old times. so, it is the difference my dear. however, one TRx card supports 8 time slots i.e. max of 8 users, but not practically. It will support max. of 7 callers. Capacity in terms of users can be increased using Half rate, i.e. A TRx will support approximately 14-15 users at half rate transmission, half rate is used during bysy hours, i.e. on one time slot 2 user will send their data/speech, with a half rate of 5.6 kbps, but at half rate voice quality is not very good. Simply one time slot will be assigned to two users in Half rate. So both of them(Ultra & Flexi) support equal no. of users if having equal no. of TRx.