Definations Prepared By Shahzada Arslan Ahmed +923036677718

Definations:

1.Time

: It is system time of computer.

2.Cell name

: It displays the name of the sector which is serving accordingto the cellfile that is loaded in TEMS.

3.CGI

: It stands for the Cell GlobalIdentity which is unique for everysector of the site. It consists of MCC,MNC,LAC,CI.MCC: Mobile Country(420 Mobily), MNC: Mobile Network Code (03 in mobily)LAC : Location Area (1708 in mobily)  CI: Cell Identity (64472).

Cell GPRS Support

Tells sector is havingGPRS or not. Values are Yes or No. •

Band

It tells in which Freq. Band mobile is operating e.g. GSM 900/ 1800. •

BCCH ARFCN

It tells by which BCCH is the mobile station getting served. •

TCH ARFCN

On which Traffic Freq. call isgoing on. •

BSIC

(Base Station Identity Code): It is combination of Network Color Code (NCC) (0 – 7) & Base Station Color Code (BCC) (0 – 7).e.g. 62. It is decoded by mobile on every Sync.Channel Message.•

Mode

It is shows in which state is mobileoperating, Idle, Dedicated & Packet.•

Time slot

On which time slot of current TCH call is going on. Time slot number of TRX.

Channel Type

: Type of channel mobile is getting now. Like BCCH / SDCCH/8 +SACCH/C8 or CBCH / TCH/F+FACCH/F +SACCH/F. •

Channel Mode

Shows mode of coding like Speech Full Rate of Half Rate• Speech Codec: It shows FR for Full Rate, HR for Half Rate & EFR for Enhanced Full Rate •

Ciphering Algorithm

It shows ciphering algorithm used by the system to protect data for privacy. E.g. Cipher by A5/2. •

Sub Channel Number

It is displayed at time when mobile is on dedicated modeat time of call setup when it is gettingSDCCH at that time it shows whichSDCCH it is getting out of 8 available.

Hopping Channel:

It shows that currentsector is having hopping feature or not. Values are Yes or No. •

Hopping Frequencies

It displays no. of freq. on which mobile is allowed to hop.viz. MA List for hopping of that sector. •

Mobile Allocation Index Offset (MAIO)

It is the number which tells from whichfreq. from given MA list for sector hopping has to be started. E.g. 0 meanssector will start from first freq. to hop.•

Hopping Sequence Number (HSN)

Indicates sequence in which frequenciesare allowed to hop from the MA List. 0-63. 0 for Cyclic Hopping, 1 – 63 randomhopping sequences.

Cell Name:

Name that describes the neighboring cell as per the cellfile.

ARFCN

Channel number mobile receives as neighbor.

BSIC

BSIC of the neighboring cell.

RxLev

Receiving Level in dBm of neighboring cell.

C1 & C2

These are the cell path loss criterion and cell reselection criteria. Valid during idle modeof mobile station.

C31 & C32

 GPRS signal strength threshold criterion C31 and GPRS cell ranking criterion C32.Valid both in packet idle and packet dedicated mode.

RxLev:

Receiving level in terms of dBm that mobile is receiving from the site. Range of -30 dBm to -110dBm.•

RxQual

Quality of voice which is measured on basis of BER. Range of RxQual 0 -7.•

FER 

Frame Erasure Rate it represents the percentage of frames being dropped due to high number of non-corrected bit errors inthe frame. It is indication of voice quality in network. •

BER Actual

Ratio of the number of biterrors to the total number of bitstransmitted in a given time interval. BER is a measure for the voice quality in network.. Depending on BER RxQual is measured. E.g., BER 0 to 0.2 %corresponds to RxQual 0. Max. BER countable and useful is up to 12.8 % which corresponds to RxQual of max. 7.

DTX

Discontinuous transmission (DTX) is a mechanism allowing the radio transmitter to be switched off during speech pauses. This feature reduces the power consumption of the transmitter, which is important for MSs, and decreases the overall interference level on the radio channels affecting the capacity of thenetwork.

TA

Value that the base station calculates from access bursts and sends to the mobilestation (MS) enabling the MS to advance the timing of its transmissions to the BS soas to compensate for propagation delay. Value of 0 means MS in radius of 550mt.From BS.

Best Regards SHAHZADA ARSLAN AHMED RF Engineer
CONTACT # +923036677718 Pakistan