An LWAAP PDU is a bit string that is byte aligned (i.e. multiple of 8 bits) in length. In the figures in subclause 6.1
, bit strings are represented by tables in which the most significant bit is the leftmost bit of the first line of the table, the least significant bit is the rightmost bit on the last line of the table, and more generally the bit string is to be read from left to right and then in the reading order of the lines. The bit order of each parameter field within an LWAAP PDU is represented with the first and most significant bit in the leftmost bit and the last and least significant bit in the rightmost bit.
An LWAAP SDU is a bit string that is byte aligned (i.e. multiple of 8 bits) in length. An LWAAP SDU is included into an LWAAP PDU from the first bit onward.
The LWAAP entity shall ignore the value of Reserved bits in downlink LWAAP PDUs.
Only one type of LWAAP PDU is defined, i.e. LWAAP data PDU.
An LWAAP PDU consists of an LWAAP header and a Data field, as described in Figure 6.1.2-1.
An LWAAP header is one byte, and consists of the four header fields R/R/R/DRBID.
A Data field is of variable size, and consists of an LWAAP SDU.