Header Check Sequence
Encyclopedia
Header sequence number is basically a CRC
of the MAC
header. It shall be the remainder of the division (modulo 2) by the generator polynomial multiplied by the content of the header excluding the HCS field.
The HCS can be a byte long (as in Wimax) or 16 bit for cable modems.
Cyclic redundancy check
A cyclic redundancy check is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data...
of the MAC
Media Access Control
The media access control data communication protocol sub-layer, also known as the medium access control, is a sublayer of the data link layer specified in the seven-layer OSI model , and in the four-layer TCP/IP model...
header. It shall be the remainder of the division (modulo 2) by the generator polynomial multiplied by the content of the header excluding the HCS field.
The HCS can be a byte long (as in Wimax) or 16 bit for cable modems.