Since the significance of each layer in scalable coding is different, making use of this characteristic can rea-sonably use such resources as bandwidth, processing and caching by deploying varied QoS control strategie...Since the significance of each layer in scalable coding is different, making use of this characteristic can rea-sonably use such resources as bandwidth, processing and caching by deploying varied QoS control strategies for differ-ent layers. This paper presents an idea of unequal QoS control and the implementation mechanism at two ends oftransmission based on RTP and MPEG-4 scalable coding, redefines the sequence number field of RTP header and ex-tends the RTP header. These can not only realize unequal bandwidth pre-allocation and unequal error protection, butalso rapidly and precisely estimate the delay jitter and packet loss ratio.展开更多
文摘Since the significance of each layer in scalable coding is different, making use of this characteristic can rea-sonably use such resources as bandwidth, processing and caching by deploying varied QoS control strategies for differ-ent layers. This paper presents an idea of unequal QoS control and the implementation mechanism at two ends oftransmission based on RTP and MPEG-4 scalable coding, redefines the sequence number field of RTP header and ex-tends the RTP header. These can not only realize unequal bandwidth pre-allocation and unequal error protection, butalso rapidly and precisely estimate the delay jitter and packet loss ratio.
