Tag: gsm rf planning

Mobile Allocation The MA is a list of hopping frequencies transmitted to a mobile every time it is assigned to a hopping physical channel. The MA-list is a subset of…

The Cell Allocation (CA) is a list of all the frequencies allocated to a cell. The CA is transmitted regularly on the BCCH. Usually it is also included in the…

The requirement that the BCCH TRX must transmit continuously in all the time slots sets strict limitations on how the frequency hopping can be realized in a cell. The current…

When mobile has been selected successfully the mobile now will start reselection tasks. Perform Cell reselection measurement first Mobile will continuously make measurements on its neighboring cells (as  indicated by…

ERP,EIRP,dB and dBm calculation are Most important thing to take care in RF Planning of any site. Isotropic RF Source A point source that radiates RF energy uniformly in all…

Which step to make clear before select any site at any location like equipment type, construction and link balance calculation which describe detail as below. Select Equipment Type For Site…

Here I write about selection of new site in rf planning, how step by step any new site planned is as per below. Prepare Initial Search Ring Note the latitude…

In a conventional non-hopping network, each call is transmitted on a single fixed frequency. This means that the interference situation in a network is also quite stable. Some calls may…

Effect in Cell Coverage Area In coverage limited cells the frequency hopping may increase the cell coverage area because of the frequency diversity gain, but since the BCCH time slot…

Cyclic vs. Random Hopping Sequences Both cyclic and random hopping modes are available in GSM. In the cyclic mode the frequencies are changed sequentially from the lowest frequency to the…