Home / call setup

call setup

Dedicated Control Channel (DCCH) in GSM

Dedicated Control Channel (DCCH) in GSM SDCCH (Stand-alone Dedicated Control Channel) Uplink and Downlink. Used for call setup, authentication, ciphering location update and SMS. SACCH (Slow Associated Control Channel) Downlink and Uplink. Used to transfer signal while MS have ongoing conversation on traffic or while SDCCH is being used. On the forward link, the SACCH … Read more

What is Antenna Pattern?

Here I write about antenna pattern, Front-to-rear Ratio and Upper Side Lobe Suppression in antenna. Antenna Pattern The pattern is the electromagnetic field of antenna radiation distributed by coordinate along fixed distance. If the pattern is represented by radiation field strength, it is called field strength pattern. If the pattern is represented by power density, … Read more