FEC Capability and Control July 2001 FEC Capability and Control Greg Chesson, greg@atheros.com Aman Singla, aman@atheros.com G. Chesson, A. Singla, Atheros

July 2001 This document contains editing instructions for adding FEC capability and control indications to the Tge draft P802.11e/D1. G. Chesson, A. Singla, Atheros

Outline Assign an FEC capability bit July 2001 Outline Assign an FEC capability bit ESTAs and EAPs learn whether FEC is possible Assign an FEC bit in QoS Control field Indicates whether frame is FEC-encoded FEC-capable ESTA must optimistically apply FEC to all received frame headers For frames >= 52 bytes (minimum size frame that could have FEC) Must accurately validate the header Retain No-ACK bit No text changes needed. G. Chesson, A. Singla, Atheros

July 2001 FEC Capability Assign a bit for “FEC-Capable” from the set of reserved bits in the Capability Information Field defined in section 7.3.1.4. Adjust the text in section 7.5 which also assigns an FEC-Capable in the Capability Information Field (bit-11) so that sections 7.5 and 7.3.1.4 are in agreement regarding the bit definition. Add “FEC-Capable” to the list of subfields in the 3rd sentence of the first paragraph of clause 7.3.1.4. Add the following to clause 7.3.1.4: “EAPs and ESTAs that can decode FEC frames as described in section 7.5 may set the FEC-Capable subfield in all frames that include the Capability Information field.” G. Chesson, A. Singla, Atheros

July 2001 FEC Control Edit Figure 14.5 replacing “rsrv” (in the Bit 15 column) by “FEC” –or- if Bit 15 is unavailable because of other changes to the QoS Control field, then assign a different bit for this function. Add new section 7.1.3.5.7 as follows: 7.1.3.5.7 FEC field The FEC field is one bit in length and is set to 1 in those QoS Data frames that are FEC-encoded as specified in section 7.5. G. Chesson, A. Singla, Atheros