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This article analyzes security vulnerabilities in bandwidth allocation and request mechanisms that are specified in the IEEE 802.16 Standard, and introduces a bandwidth request adversary model called UL-BRA based on these vulnerabilities. The goal of UL-BRA is to abuse the bandwidth request/grant operation of a WiMAX network, resulting in a significant decrease of the overall uplink transmission performance of the network. To overcome the challenge caused by the vulnerabilities of the standard, we propose a security patch incorporating a real-time anomaly detection and restoration (RADR) mechanism, which combines an MCDR scheme with an ATD scheme in order to eliminate the impacts of UL-BRA in real-time. We verify the effectiveness of RADR under UL-BRA threats via simulations, and demonstrate the effectiveness of the proposed patch in mitigating the threats of UL-BRA. [ABSTRACT FROM PUBLISHER]

The article offers information on the proposed quality of service differentiation scheme for the Institute of Electrical and Electronics Engineers (IEEE) 802.16 wireless mesh networks. According to the article, WMN is becoming an important architecture of future generations of wireless communications systems wherein the quality of service provisioning provides an essential role in optimizing its performance. It provides a detailed discussion on the system model, frame structure, different scheduling schemes and collocated topology. It also discusses the different relevant issues and potential performances associated with the approach.

The article focuses on the issues and design challenges associated with the Institute of Electrical and Electronics Engineers (IEEE) 802.16 mesh standard. Accordingly, IEEE 802.16, which is also known as WiMAX mesh network, provides an alternative wired access in physically or economically infeasible mesh connectivity as well as guarantees service quality. The issues associated with IEEE 802.16 include spatial reuse, tree scheduling, validity of the service quality, ordering delay, synchronization, isolation, hop range, frame utilization and channel delay.