PACKET FORMAT OF NETWORK ABSTRACTION LAYER UNIT(NALU), AND ALGORITHM AND APPARATUS FOR VIDEO ENCODING AND DECODING USING THE FORMAT, QOS CONTROL ALGORITHM AND APPARATUS FOR IPV6 LABEL SWITCHING USING THE FORMAT

摘要

Disclosed are a method for configuring a packet of a network abstraction layer unit (NALU) for switching an IPv6 label and an algorithm for encoding a video, controlling a QoS, and decoding video device using the same. A format of the NALU according to an embodiment of the present invention comprises a network abstraction layer header (NALH) including a label having a certain size and a network abstraction layer (NAL) payload including encoded data. The label is determined based on a combination of layer information including a priority of the encoded data, a spatial layered label, a temporal layered label, and a quality layered label. The label included in the NALH can be used to determine by which decoding module the NALU is processed. Also, the label can be included in a packet header, wherein the label of the packet header can be used to determine whether a MANE transmits the corresponding packet. For example, the label of the packet header can be used in a QoS control manner of a video service using a flow label of an IPv6 header. An IPv6 router can identify a priority by each video packet using a portion of the flow label of a 20 bit length, wherein the NALH defined by an MPEG-JVT is changed to a label, thereby providing a way to effectively realize the MANE assumed in the MPEG-JVT.