IEEE 802.11 access
Dynamic tuning of the IEEE 802 11 distributed coordination function to derive a theoretical throughput limit
... The IEEE 802.11 standard [1] defines the specifications for medium access control (MAC) and the physical layers in a wire- less local area network ...basic access mechanism that supports ...
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Design of zone based bandwidth management scheme in IEEE 802 16 multi hop relay networks
... With the popularity of wireless environments in recent years, multimedia applications such as the IPTV and MOD are more and more attractive to the mobile host (MH) in the wireless networks like the IEEE 802.11 ...
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Improving the IEEE 802 11 power saving mechanism in the presence of hidden terminals
... Figure 4 illustrates the detailed transmission process of the BC reservation scheme. In the figure, after an ATIM window terminates, each device has reserved a BC and the reserved BCs are the same as Table 1. After the ...
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Online Full Text
... III. S IMPLIFIED IEEE 802.11 E H YBRID MAC M ODEL The IEEE 802.11e MAC standard provides distributed service differentiation or QoS by employing a priority system. Network traffic is classified into four ...
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Channel Resource Allocation for VoIP Applications in Collaborative IEEE 802 11/802 16 Networks
... channel access capability of the AP in the VoIP application where the AP is required to serve all mobile devices with the channel access capability equals that of a single ...channel access for AP ...
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An IEEE 802 11 EDCA Model with Support for Analysing Networks with Misbehaving Nodes
... EDCA introduces four Access Categories (ACs) to pro- vide QoS through traffic differentiation. These categories are, from the highest priority: Voice (Vo), Video (Vi), Best effort (BE), and Background (BK). The medium ...
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A Power Efficient Access Point Operation for Infrastructure Basic Service Set in IEEE 802 11 MAC Protocol
... In this section, detailed description as how the traditional IEEE 802.11 PCF protocol can be modified to achieve a better performance is given. The original IEEE 802.11 is analyzed to show that PCF is not ...
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Performance enhancement of IEEE 802 11 DCF using novel backoff algorithm
... The IEEE 802.11 standard defines the specifications for medium access control (MAC) and the physical layers in a wire- less local area ...basic access mechanism that supports contention-free ...
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Analysis for Saturation Throughput Using Various Mechanisms for IEEE 802 11 WLAN'S
... In 802.11, priority access to the wireless medium is controlled by the use of inter-frame space (IFS) time between the transmissions of frames. Totally three IFS intervals have been specified by 802.11 standards. ...
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A New Load Balancing Procedure in IEEE 802 11 WLANs
... Inter Access Point Protocol (IAPP) with slight modifications [16,17] and some of them use a dedicated server connected to wired backbone [18,19] or a switch [20] for cooperation of ...
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Rate adaptation in IEEE 802 11 WLAN based on neural network
... Despite the advantages, SNR based rate adaptations have not been applied in practice so far. This is mainly because of three reasons. First, the RTS/CTS channel access procedure is required even if no hidden ...
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Dynamic Adaption of DCF and PCF Mode of IEEE 802 11 WLAN
... © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 2728 IEEE 802.11 provides another more organized way to grant channel access called PCF. But better management always ...
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Throughput analysis for coexisting IEEE 802 15 4 and 802 11 networks under unsaturated traffic
... Wireless personal area networks (WPAN) and wireless local area networks (WLAN) based on IEEE 802.15.4 and 802.11 standards operate in overlapping unlicensed frequency bands; therefore, they create harmful ...
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Modifications in IEEE 802 11 to Prevent Collisions due to Interference in MANETs
... Multiple papers are available in published literature relating to mitigate the interference. In [1], authors used cognitive radio technology and identify the vacant channels in order to alleviate the impact of ...
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Proposing of Collisions Free and Secure Network for IEEE 802 11 WLAN
... have access points with stationery and mobile ...Various access points are connected through different switches. These access points are points where WLAN users log-on to connect the ...
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IEEE 802 11 Wireless LANs: Performance Analysis and Protocol Refinement
... In DCF basic access mode, a station with a packet to transmit monitors the medium activity. If the medium is idle, the sta- tion transmits the data packet. If the medium is sensed busy, the station waits until the ...
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A novel pre authentication scheme based on fast channel switching in IEEE 802 11 WLANs
... mobile IP registration delay in the case of an L3 HO [5]. AP scanning delay occurs in process when mobile STA searches for and selects a new AP. Authentication delay occurs in the process including establishing the ...
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Virtual queue dropping for robust real time video over IEEE 802 11aa wireless LANs
... The authors of [12] have delivered an overview on the scope of 802.11aa-2012, as well as the QoS management frame service issue of 802.11ae-2012 [13], both of which serve as two amendments to the IEEE 802.11-2012 ...
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A Performance Evaluation for Rate Adaptation Algorithms in IEEE 802 11 Wireless Networks
... In our simulations, we did not consider the impact of traffic pattern on the performance of rate adaptation algorithms, which leaves as our future work. The results presented in the thesis demonstrate that research on ...
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Avoiding collisions between IEEE 802 11 and IEEE 802 15 4 through coexistence aware clear channel assessment
... to Zigbee beyond a Heterogeneous Exclusive CCA Range, which they calculate to be 25m with the free space path- loss model. Yuan et al. [3] study the co-existence behavior of Zigbee and saturated Wi-Fi. They conclude ...
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