Reliability Analysis of IEEE 802.16 Mesh Networks

Abstract

The problem of terminal-pair reliability has been extensively studied for wired computer networks, however comparatively less research has been done on the reliability of wireless networks. With mesh networks becoming a more attractive option than the traditional pointto-multipoint network design due to extended coverage and increased overall link quality, a method is needed to evaluate the added reliability obtained through the available path diversity in fixed wireless mesh networks. Methods are available to evaluate the reliability of wired networks, however they do not take into account the outage conditions found in a wireless environment such as multipath fading and interference. This paper combines the currently available reliability algorithms for wired networks along with methods to calculate the link and node outage in a fixed station IEEE 802.16 environment in order the simulate the reliability of a mesh subscriber station's connection to the base station. An example calculation is also provided.

An instantaneous call admission control using information dissemination for WiMAX mesh networks

“…In [9], Dominiak et al have derived an efficient method for calculating the terminal pair reliability in an IEEE 802.16 mesh network. This can be used effectively as a metric for routing instead of packet error rates.…”

Dimensioning microwave wireless networks

“…Computing the probability that a subset of nodes in a probabilistic network is connected is a classical computationally difficult problem [10], [11], even for the case in which the subset of nodes is restricted to a single source-destination pair, namely, the two-terminal network reliability problem [12]. But, to the best of our knowledge, Dominiac et al [13] was the first work to investigate the reliability of fixed broadband wireless networks. The authors, however, assume very strong hypotheses (e.g., single source-destination flow, uncapacitated network, unqualified failures) and apply currently available algorithms for the two-terminal network reliability problem.…”

Robust Emergency Communications Using TxID Watermark of ATSC DTV System

“…We have also assumed that one DTV station is involved in the emergency communication. Similarly, comparison of reliability with other communication system such as IEEE 802.16 wireless mesh network considering fading model can be assessed using similar approach in [24]. However, network reliability also depends on the physical strength of the telecommunication tower [25].…”