p units of a picture or layer picture into slice groups. The map unit to slice group map consists of a list of numbers, one for each slice group map unit, specifying the slice group to which each coded slice group map unit belongs to. G.3.38 non-paired reference base field: A reference base field that is not part of a complementary reference base field pair. A non-paired reference base field is a non-paired reference field. G.3.39 P slice: A slice that may be decoded using intra-layer intra prediction or inter prediction using at most one motion vector and reference index to predict the sample values of each block. G.3.40 parameter: A syntax element of an SVC sequence parameter set or a picture parameter set. Parameter is also used as part of the defined term quantisation parameter. G.3.41 picture parameter set: A syntax structure containing syntax elements that apply to zero or more layer representations as determined by the pic_parameter_set_idsp element found in each slice header. G.3.42 prefix NAL unit: A NAL unit with equal to 14 that immediately precedes in decoding order a NAL unit with equal to 1 or 5. The NAL unit that immediately succeeds the prefix NAL unit in decoding order is referred to as the associated NAL unit. The prefix NAL unit contains data associated with the associated NAL unit, which are considered to be part of the associated NAL unit. G.3.43 reference base field: A reference field that is obtained by decoding a base quality layer representation with the ref idc syntax element not equal to 0, the store_ref_base_pic_flag syntax element equal to 1, and the field_pic_flag syntax element equal to 1 of a coded picture and all layer representations of the coded picture that are referred to by inter-layer prediction in the base quality layer representation. A reference base field is not a decoded picture and it is not an output of the decoding process, but may be used for inter prediction when P, B, EP, and EB slices of a coded field or a field macroblock of a coded frame are decoded. See also r