METHOD AND APPARATUS FOR DETERMINING PREFERRED IMAGE FORMAT IN IP-BASED MOBILE VIDEO TELEPHONY

摘要

A method for determining a preferred image format in a User Equipment (UE) supporting a mobile video call between UEs. The UEs should each have a camera and a display Upon receiving, from an opposing UE, video transmission control information including therein a preferred image format. If the preferred image format requested by the opposing UE is acceptable, then the opposing UE is sent video transmission control information is sent including therein at least one of an acceptable response message and an acceptable new preferred image format according to acceptability of the preferred image format requested by the opposing UE.