The GSM radio interface

The groupe speciale mobile (GSM) digital cellular radio system, to be introduced into Europe in 1991, is the first standardised cellular radio system to use digital transmission. Given the novel design of the system considerable effort has gone into producing the system specifications. These have been centred on the two major interfaces present in the system ― the mobile switch to base station interface and the base to mobile station (radio) interface. The paper describes the GSM radio interface in detail, covering both the traffic and signalling channels