IEEE 802.16J relay-based wireless access networks: an overview

Abstract

Multihop wireless systems have the potential \nto offer improved coverage and capacity over \nsingle-hop radio access systems. Standards development \norganizations are considering how to \nincorporate such techniques into new standards. \nOne such initiative is the IEEE 802.16j standardization \nactivity, adding relay capabilities to IEEE \n802.16 systems. This article provides an overview \nof this relay-based technology, focusing on some \nof the most pertinent aspects. In particular, the \ndifferent modes of operation (transparent and \nnon-transparent), framing structures, and network \nentry procedures are described. Some consideration \nof the issues in designing such systems \nis then given, which highlights when different \nfeatures within the standard are most appropriate. \nAs these systems are very new, many open \nissues remain to be resolved.