General Packet Radio Service (GPRS) is the next evolutionary step of GSM. The difference is that the air interface supports both circuit switched connections (in GSM) and packet switched connections (in GPRS). This course provides the details of the GPRS air interface including an understanding of the spectrum used and the radio technology. The radio interface channels and their use are discussed. Since GPRS uses the same physical structure as GSM, the details on how the air interface can be used to support both voice and data services as well as the mechanism that is used to support variable data rates is presented. After we explore how the channels are configured and can coexist with a GSM radio environment, we'll explore how resource allocation is managed in GPRS. The resource allocation discussion includes how GPRS is capable of supporting "bandwidth on demand" and "always on" concepts. The course breaks down how GPRS can be used to more efficiently manage air interface resources and how computer data is packaged and presented over the air interface.