EiRP & Rx Level Strenght

with Path loss =
20.log(d) + 20xlog(f) + 32.44

Xlog ?

Hi Ziya,

EiRP(dBm)=AntenaPower+AntennaGain, it should be constant in any area served by a given cell,
RxLevel=EiRP-Path Loss,it depends on the distance from an antenna+environment terrains.

ziya,

you can refer to the vendor’s catalogue of those cables. Normally each cable is defined by a certain set of “physical charasteristics”, such as attenuation dB/m, weight, thickness, etc.
One of those characteristic is the “minimum bending radius”

Definition of the bending radius here : en.wikipedia.org/wiki/Bend_radius

In your case (double circle), you should use the “minimum radius for repeated bends”.

If you cannot find you cable vendor’s catalogue, you can refer to RFS catalogue (online) :
www dot rfsworld.com/index.php?p=289&l=1&mode=hierarchy

for 1/2″ : min radius repeated bends = 125mm (corrugated) or 32 mm (superflexible). Basically, even with the roughest 1/2″ jumper, you can do narrow circles of min. 25cm diameter (corrugated) or 7cm (superflexible).

Regards,

radiolink timeout is a mechanism in the BTS and in the MS.

Let’s look at the BTS side :

Every time the BTS receives a good SACCH frame that can be decoded, the radiolink counter remains at its maximum value (if already at max value) or it is incremented by +1.

Every time the BTS receives a SACCH frame that cannot be decoded (probably because of poor radio conditions, degrading the signal), the RL counter is decreased by -2.

Initially the value of the RL counter = 18 (parameter RADIO LINK TIMEOUT BS).

Once the value reaches 0, the call is dropped (radio resource is dropped, message sent to the BSC).

At MS side, it is the same, except that when it reaches 0, the MS decides to release the call by itself. Therefore, it doesn’t send a message to the BTS.

Regards,

cell priority sounds a bit vague, this term is not used in alcatel systems so i’m not sure what it refers to.

hello zuya,

the answer to your question depends on the value you set to the parameter that controls it.

max value : 6 TBF per PDCH in UL and 10 TBF per PDCH in DL.

Parameter name : MAX UL TBF PER PDCH and MAX DL TF PER PDCH. Default values are almost the max values : operators perfer to reduce the throughput per user but allow more users to be connected at the ame time. Quantity over Quality…

well, yes, if rxlev is good and TA is within 35km, then it should be possible. Assuming there are no interference (good rxqual), of course.