Medium Access Control (MAC) and Physical Layer (PHY) - CISE

4-June-07 P1901_PRO_016_r0
- The Packet ACK Protocol information has too many errors if it is sent in a Burst Header because limitation
of used PAP codification.
Thefollowing are the fields with significant information:
- Preamble – 32 bits. Always set to 0xBDADC3
- TMI – 4 bits. Tonemap ID. Tonemap used in the data encoding. TMI 0 is reserved for HURTO mapping.
- Version – 3 bits. Set to 0.
- Dummy Hdr– 1 bit. It shall be set to 1 if the burst is not carrying data symbols.
- PAP Code Type – 1 bit. Packet ACK Protocol Codification Type. It is set to 0 when Run-Length Encoding.
And set to 1 when GroupEncoding.
- ACK Info – 1 bit. Shall be set to 1 when the burst header contains Packet ACK Protocol information. See
section 5.4.
- PAP Info – 119 bits. The meaning of these bits depends on PAP Code Type. See section 5.4
- PAP Port – 7 bits. Local Port over which the ACK contained in the Burst Header takes effect.
- PAP Last Received Packet – 12 bits. Last received packet information used by Packet ACK Protocol. See
section 5.4
The rest of the fields shall be ignored in reception.
Submission page 152 UPA-OPERA