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To enable seamless integration of ad hoc networks with other Infrastructure LANs and to the Internet, TCP seems to be the natural choice for users of ad hoc networks that want to communicate reliably with each other and with the Internet. It is well-known that due to the nature of multi-hop wireless Ad hoc network applications, TCP throughput instability can have a devastating impact on the QoS requirements...
The performance of passive and active scanning is analyzed for wireless LAN, during handoff search phase based on the IEEE 802.11b standard. The performance analysis indicates that the active scanning method is faster and works well if the number of mobile stations is less than 15. Active scanning can reduce the search phase time to 55% compared to that of passive scanning, for 10 mobile stations...
WiMAX is currently one of the hottest technologies for broadband wireless access (BWA) systems which propose a wireless high-speed and high performance access system, with service differentiation for distinct classes of traffic and QoS requirements. IEEE802.16 standard specifies the PHY and MAC layers for BWA system and provides the flexibility of TDD and FDD allocation schemes. However, in spite...
WiMAX is currently one of the hottest technologies for Broadband Wireless Access (BWA) systems which propose a wireless high-speed and high performance access system, with service differentiation for distinct classes of traffic and QoS requirements. IEEE802.16 standard specifies the PHY and MAC layers for BWA system and provides the flexibility of TDD and FDD allocation schemes. However, in spite...
The IEEE 802.6 standard has recommended the bandwidth balancing (BWB) scheme to provide fairness in DQDB networks during overload conditions. One of the drawbacks of this scheme is the wasted bandwidth; the amount of wasted bandwidth increases as the bandwidth balancing modulus (BWB-MOD) decreases. In this paper an enhancement to the standard BWB scheme is presented by introducing some modifications...
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