IEEE standard 802.11
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 ...
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IEEE 802 11 Wireless LANs: Performance Analysis and Protocol Refinement
... Many research efforts have been conducted on model- ing the performance of DCF since the standardization of IEEE 802.11 MAC. Bianchi in [5] and Wu et al. in [6] use Markov chain models to analyze the throughput of ...
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Channel Resource Allocation for VoIP Applications in Collaborative IEEE 802 11/802 16 Networks
... − 11 GHz, which led to the IEEE 802.16a standard completed in January 2001 ...− 11 GHz where the spectrum overlaps with that of the existing IEEE ...
11
A Survey and Analysis on Scheduling Algorithms in IEEE 802 16e (WiMAX) Standard
... To manage resource allocation and grants an appropriate QoS per connection, other scheduling schemes are proposed and its complexity must be O (N). [18] These scheduling schemes rely on different algorithms to handle ...
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A novel contention probability dynamism for IEEE 802 15 6 standard
... In this section, we will discuss some previous literatures which have focus on developing a MAC protocol to guar- antee a power consumption efficiency and/or delay opti- mization. In [11], an introduction to an ...
10
Dynamic Adaption of DCF and PCF Mode of IEEE 802 11 WLAN
... In this work we have focused on three problem areas that lead to performance degradation in IEEE 802.11 WLAN. One major problem with PCF that gets highlighted when small fractions of associated and pollable nodes ...
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Proposing of Collisions Free and Secure Network for IEEE 802 11 WLAN
... the standard) then the station is allowed to transmit, the receiving station will check the CRC of the received packet and send an acknowledgment packet ...
5
Reducing the MAC Latency for IEEE 802 11 Vehicular Internet Access
... First, the time that an MS stays on a channel is determined by the MinChannelTime and MaxChannelTime. In the active scanning mode, after a probe message is sent, the MS will wait for MinChannelTime and if no response is ...
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OFDM synchronizer implementation for an IEEE 802 11(a) compliant modem
... Crosscorrelator: The crosscorrelator implemented in the synchronizer is a simplified version of the standard complex crosscorrelator. Complex crosscorrelator is usually “weak” point in modern communication designs ...
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Rate adaptation in IEEE 802 11 WLAN based on neural network
... the IEEE 802.11 standard does not specify any mechanism and protocol to efficiently utilize the multiple data transmission rates, many rate adaptation schemes have been proposed and some have been used in ...
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Throughput analysis for coexisting IEEE 802 15 4 and 802 11 networks under unsaturated traffic
... respectively. Therefore, the WPAN nodes are less respon- sive to accessing the channel compared to WLAN nodes. In addition, we have implemented the corresponding carrier sensing outcomes for the considered symmetric and ...
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Analysis for Saturation Throughput Using Various Mechanisms for IEEE 802 11 WLAN'S
... original standard was ratified in 1999 [1] . The 802.11a standard uses the same core protocol as the original standard, operates in 5 GHz band, and uses a 52-subcarrier orthogonal frequency division ...
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An IEEE 802 11 EDCA Model with Support for Analysing Networks with Misbehaving Nodes
... To determine the exact impact of the CW values the following scenario is analysed. We assume a network of five nodes in which each node generates traffic with an offered load of 8 Mbit/s. This assures saturation conditions. ...
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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 ...The IEEE 802.11 standard pro- vides two mechanisms for ...
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Performance Analysis of Proactive, Reactive and Hybrid MANET Routing Protocols on IEEE 802 11 Standard
... In this paper performance of Reactive (AODV), Hybrid (GRP) and Proactive protocol (OLSR) is evaluated for metrics like Media Access Delay, Network Load, Throughput and Retransmission Attempts by varying number of nodes ...
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Avoiding collisions between IEEE 802 11 and IEEE 802 15 4 through coexistence aware clear channel assessment
... Both Wi-Fi and Zigbee allow preamble detection instead of energy detection as CCA. Preamble detection can improve sensitivity, but prevents cross-technology detec- tion due to the differences in preambles between ...
15
Mobility management in IEEE 802 11 WLAN using SDN/NFV technologies
... the IEEE 802.11 standard [4], MTs scanned multiple APs within the radio range and received an extensive list of ...The IEEE 802.11 standard [4] did not provide any load balancing mechanism ...
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Optimal delay analysis for real time traffics over IEEE 802 11 wireless LANs
... performance of DCF in binary symmetric channels (BSCs), concurrently considering factors such as the bin- ary exponential backoff mechanism, the incoming traffic loads, and the distribution of incoming packet sizes. The ...
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Performance Analysis of Physical Layer of WiMAX 802 16 using 64 QAM
... Abstract: IEEE 802.16 is an emerging technology for the future telecommunication standards. All Communication standards follows the basic OSI model.OSI model have seven layers. Upper layers responsible for user ...
6
A Performance Evaluation for Rate Adaptation Algorithms in IEEE 802 11 Wireless Networks
... It requires incompatible changes to the 802.11 MAC and PHY protocol. The interpretation of some MAC control frames is changed and each data frame must include a new header field. In RBAR the rate adaptation mechanism is ...
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