A novel approach to ARQ error control mechanisms for wireless LANscommunications
Almeida, N.T.; Abrantes, S.A.
Local Computer Networks, 2000. LCN 2000. Proceedings. 25th Annual IEEE Conference on
Volume , Issue , 2000 Page(s):22 - 31
Digital Object Identifier 10.1109/LCN.2000.891003
Summary:Communications in high-speed wireless mobile networks have to deal
with large varying transmission and service requirement conditions,
often needing complex radio modulations and concatenated error control
functions. For the latter, it is usual to implement forward error
correction and automatic repeat request (ARQ) mechanisms in,
respectively, the physical (PHY) and the data link control (DLC) layers.
Even so, the communication requirements of medium/high quality real-time
services may be hard to meet under hostile transmission conditions. In
this paper an analysis of some improvements over current ARQ error
control schemes is presented, envisaging more efficient communications
in high-speed wireless LANs. It is shown that high performance ARQ
schemes can be used at the DLC layer of wireless LANs by carrying
critical control information in more robust physical modes. Performance
comparisons for current and proposed ARQ schemes, and some protocol
implementation aspects, are the main focuses of analysis
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