O) Supports the last slot data of Rate 1 mode, adds 64-bit data, and performs 32-bit CRC check
(checksum contains all data);
P) Supports three types of confirmed data transmission, joins 7bit SN, performs 9-bit CRC
check, adds masks (different rates, different masks), encodes and interleaves at different
rates, and adds 32-bit CRC to the data;
Q) Support feedback packet data time slot, add 1-2 data feedback packets, perform overall 32-
bit CRC check, perform BPTC (196, 96) encoding and interleaving;
R) Support UDT's last block, perform 16-bit CRC check on data, perform BPTC (196, 96)
encoding and interleaving;
CC
PI
LCSS
RC Info + FEC Parity
RC Info + FEC Parity
SYNC
SYNC
SYNC
SYNC
SYNC
SYNC
RC Info + FEC Parity
RC Info + FEC Parity
EMB Parity
SYNC(48)
10ms
30ms
OMISSIS
Figure 5.9 Independent RC frame structure
4. Supports RC signals for time slots RC and EMB;
A) Support for adding 7bitEMB for QR (16, 7, 6) encoding;
B) Support for adding 11bit RC signals, performing variable length BPTC, interleaving 32bit,
and adding to RC unit;
5. Receiving the content type of the frame determined according to SYNC, determining the type of
the received frame according to Slot Type, FLCO, CSBKO, LB, DPF, and then performing
deinterleaving, decoding, and verifying corresponding to the transmission according to the received
frame type.
