contention window
MAC Throughput Improvement Using Adaptive Contention Window
... adaptive contention mechanism instead of formulating a new pro- ...adaptive contention window scheme only needs the information from CSMA/CA in HomePlug ...
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The Details of Virtual Contention Window Concept for 802.11 IBSS Wireless Local Area Network Mathematic Modeling
... Virtual Contention Window as a parameter VCW is a stochastic parameter of unplanned wireless network stan- dard 802.11 (BSS), which is numerically equal to the aver- aged number of elementary time intervals ...
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HISTORY BASED CONTENTION WINDOW CONTROL PROTOCOL FOR ENERGY EFFICIENCY IN WIRELESS SENSOR NETWORK
... We propose a novel backoff mechanism, in which the history of packet lost is taken into account for Contention Window size optimization. The packet lost involves packet collision and channel error.In this ...
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Maximize Energy Efficiency with QoS Performance of Contention Window Adaptation Algorithm for IEEE 802.11WLAN
... adaptive contention window is less (ex: for the netwotk load 1600 proposed algorithm has ...proposed Contention window algorithm has higher QoS and it is energy ...
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Enhanced CSMA/CA Contention Window for Efficient Random Access in IEEE 802 15 6
... small contention window and vice-versa in order to speed up the transmission of emergent data towards the ...the contention fails and the value of CW remains unchanged because CW does not change for ...
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Minimizing Idle Time and Collision Time Using Token DCF With Append Process and Change Contention Window Size for Wireless Network
... ABSTRACT: IEEE 802.11 DCF is the MAC protocol currently used in wireless LANs. However, due to idle and collision times, 802.11 DCF performs poorly when it comes to channel utilization, system throughput, and channel ...
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Optimization of T MAC Protocol in WSN Based on Minimum Contention Window
... Simulation and Results Analysis For the sake of analyzing the improvement of the network performance brought by the proposed algorithm under different network conditions, this paper util[r] ...
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Performance Evaluation of 802.11 MAC Protocol with QoS Differentiation for Real-Time Control
... Sensitive to collisions, the IEEE 802.11 BEB is effective under light to moderate traffic load . A transmitting station uses back-off mechanisms to determine how long to wait following a collision before attempting to ...
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Delay Awareness Algorithm for Dynamic Adaptation in Wireless Networks
... Several authors have proposed different methods on backoff parameter tuning for increasing the performance of medium access protocols in the IEEE 802.11 networks. However, their tuning mechanisms perform one-sided tuning ...
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Frame capture in IEEE 802 11P vehicular networks: a simulation based approach
... the contention window size never changes, because at the MAC layer there is no recovery or contention window adaptation because of ’lost’ broadcast frames (a broadcast frame can lost at one ...
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An Insight of Backoff Algorithms in Wireless Networks
... Now during the communication, as the collision is identified, the CW size is doubled and this process is repeated till the CW size not reaches to CWMax. As the successful communication is performed, the CW size resets to ...
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An Algorithmic Approach to Avoid Starvation in Wireless Mesh Networks
... We proposed a Starvation mitigation algorithm (SMA) to reduce the extent of starvation in wireless mesh networks. Our proposed algorithm used to reduce the starvation occurred in a network and mesh nodes that have ...
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Vol 5, No 2 (2013)
... minimum contention window size under heavy ...of contention- based protocols several MAC games are presented, where the nodes’ actions are transmission mode or ...of contention window ...
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Performance Enhancement in Multirate Wi Fi Networks
... The last approach is similar to QoS techniques introduced by IEEE802.11e standard to protect high priority data from low priority one [5]. A station wishing to send high priority traffic should wait a bit less before it ...
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Investigation on IEEE 802 16m Networks under Developed Error Model
... the contention window up to maximum contention window on collision and the backoff window is set to minimum contention window on ...based contention resolution, the ...
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Performance Evaluation of Priority based Contention MAC in Mobile Ad Hoc Networks
... the contention window is doubled every time when a node experiences a packet collision that results in failure of ...the contention window resets itself to the minimum value irrespective of ...
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History Based Backoff Algorithms for Mobile Ad Hoc Networks
... the Contention Window to introduce History Based Increment Backoff (HBIB) algorithm which outperforms HBPB in terms of throughput and end-to-end delay with various numbers of nodes and different traffic ...
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A contribution to performance analysis approach of the IEEE 802.11 EDCA in wireless multi-hop networks
... The IEEE 802.11 has become ubiquitous and gained widespread popularity for wireless multi-hop networks. To adapt the quality of service requirements of multi-media applications, the IEEE 802.11e Enhanced Distributed ...
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An Approach for Improving Performance of Back off Algorithm
... the contention with low collision rate and maximize throughput with minimum ...the contention efficiently for smaller networks, but as the network size grows, the above mentioned performance measures ...a ...
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INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & MANAGEMENT CROSS LAYER ADAPTATION FOR QoS IN WSN Kollapureddyraghuram*, Dr.syed umar, Vakkalagadda Naga Prasad
... Dynamic contention window adjustment per class, (ii) Minimizing the delay experienced by changes in Sleep schedules (DSS) of communicating nodes by randomly altering Duty Cycle based usages and DSS delay of ...
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