The Radio Link Protocol framing system provides the mobile wireless
station set with high speed data transmission capability by using the
Dedicated Control Channel, which comprises a stream of 20 msec frames, to
carry a single 18 byte Radio Link Protocol frame and the Supplementary
Channel, which comprises a stream of 20 msec frames, to carry many 18
byte Radio Link Protocol frames to accommodate high-speed bursts of data.
The Radio Link Protocol framing system packs the Radio Link Protocol
frames within the Supplementary Channel (SCH-RLP frames) to maximize the
data processing efficiency. The Radio Link Protocol framing system
functions to package the subscriber's data into predetermined frame
format consisting of Core Units, which are packed, as needed, into one
SCH-RLP frame. The data capacity is limited solely by the Supplementary
Channel burst capacity. By simply computing the Cyclic Redundancy Check
bits to validate the accuracy of the data contained within a SCH-RLP
frame enables the system to copy the data directly from the SCH-RLP frame
to data receive buffers. Both sequential and non-sequential frames can be
incorporated into a single SCH-RLP frame. The Core Unit is the common
divisor of both the Dedicated Control Channel and the Supplementary
Channel. The Dedicated Control Channel supports transmission of a full
frame of 9.6 Kbps, while the Supplementary Channel supports data
transmission speeds of 9.6 Kbps and higher.