Patent ID: 8493920

Claim:
A method for transmitting data using real-time transport protocol (RTP) packets based on semi-persistent scheduling, the method comprising: allocating radio resources used for talkspurt and radio resources used for silent period, wherein the takspurt radio resources used for the RTP packets generated during the talkspurt are allocated in a cycle of a first period, the silent period radio resources used for the RTP packets generated during the silent period are allocated in a cycle of a second period which is a multiple of the first period; allocating radio resources used for a transition indicator that indicates a transition from the talkspurt to the silent period or transition from the silent period to the talkspurt, wherein the radio resources used for the transition indicator are allocated in a cycle of the first period; detecting transition from the talkspurt to the silent period or transition from the silent period to the talkspurt by comparing time stamp values included in the RTP packets, wherein the time stamp values represent sampling points of the RTP packets, a time stamp value for the silent period is greater than a time stamp value for the talkspurt, and the detection is performed by a packet data convergence protocol (PDCP) layer; and transmitting the transition indicator based on the radio resources used for the transition indicator.