CommentID~CommenterName~CommenterEmail~CommenterPhone~CommenterFax~CommenterCo~Clause~Subclause~Page~Line~CommentType~Comment~SuggestedRemedy~Response~CommentStatus~ResponseStatus
0~Fischer, Michael~mfischer@choicemicro.com~+1-210-492-6036~+1-210-240-4096~Intersil Corp.~04~4.1~6~27-29~TR~Ignoring the PCF completely in the analysis of 802.11(b)  traffic patterns brings many of the conclusions into question.  The PCF traffic patterns are considerably different than the ones discussed in subsequent sections, and while point-coordinated networks are relatively uncommon today, the HCF in the MAC extensions for QoS being developed in TGe will have many characteristics in common with PCF traffic, including multi-MPDU bursts separated by SIFS intervals.~Update the simulation-based analyses of 802.11(b) traffic to also include error analyses with PCF traffic.  I believe the OPNET 802.11 model now includes a point coordinator.  If not, you should be able to get a copy of the one developed by the TGe simulation subgroup from Matthew Sherman of AT&T and/or Sunghyun Choi of Phillips, both of whom worked on developing that model and have presented results of simulations performed using that model in submissions to TGe.~~X~O
0~Fischer, Michael~mfischer@choicemicro.com~+1-210-492-6036~+1-210-240-4096~Intersil Corp.~04~4.1.1~7~12-13 and 42-43~T~The statements that ARQ "insures" reliable delivery is an overstatement, even in the absense of interference from 802.15.1 transmissions.  What the ARQ in the 802.11 MAC does is to attempt to make the incidence of packet loss sufficiently low that the higher layer protocols can treat 802.11 as a LAN rather than as some other sort of intermediate-speed, unreliable data link.  Furthermore, the assertions that there is "little chance of data loss" is highly questionable, especially at lower 802.11 data rates such as 1 or 2Mb/s because the probablility of 802.15.1 hops within the 22MHz occupied bandwidth of 802.11 during each frame transmission attempt.~Modify these statements to indicate that ARQ improves reliability, not insures reliability, and remove the statement about little chance of data loss, replacing it with a quantative statement of simulated chance thereof if desired.~~X~O
0~Fischer, Michael~mfischer@choicemicro.com~+1-210-492-6036~+1-210-240-4096~Intersil Corp.~05~5.4.2~21~6-11~TR~Neither the short preamble option of 802.11b (which ought to improve the mutual interference situation when used) nor the PBCC modulation option of 802.11b are mentioned or analyzed.~Update the simulation-based analyses of 802.11b to take account of short preamble vs. long preamble and to consider whether the susceptibility/interference source characteristics of PBCC modulation are the same as CCK or not.  If not include analysis of PBCC as well in the appropriate sections.~~X~O
0~Fischer, Michael~mfischer@choicemicro.com~+1-210-492-6036~+1-210-240-4096~Intersil Corp.~10~10.2.2.6.3~48~18~TR~Element ID 8 is already used by the hopping pattern parameters element in 802.11D-2001.~Use a non-allocated element ID, taking into account those presently assigned for provisional use in the TGe, TGh, and TGi drafts.~~X~O