Where can I find information about MAC and RLC protocols?
Download and read 3GPP documents about RLC/MAC, start with 25 series. Documents also show message mapping to channels: • 25.321 Medium Access Control (MAC) protocol specification • 25.322 Radio Link Control (RLC) protocol specification • 44.060 General Packet Radio Service (GPRS); Mobile Station (MS) – Base Station System (BSS) interface; Radio Link Control/ Medium Access Control (RLC/MAC) protocol Earlier FAQ Answer gives you some help how to download those How is data compression done in UMTS? Video and music compression will be done in application level. 3G phone (and network application servers) will have programs (or you will be downloading them) that records and displays video or music. Those programs have build-in data compression features. Good examples are MP3 and other music programs. MP3 codec includes data compression and most current music player understands it. For image and video there are several standards including JPEG, MPEG-4, H.263, Microsoft media player etc. avail
