Dynamic priority re-allocation scheme for quality of service in IEEE 802.11e wireless networks

2009 ◽  
Vol 16 (3) ◽  
pp. 759-774 ◽  
Author(s):  
Ming Li ◽  
Hua Zhu ◽  
B. Prabhakaran
Keyword(s):  
Wireless Networks ◽  
Quality Of Service ◽  
Ieee 802.11E ◽  
Allocation Scheme ◽  
Dynamic Priority

scholarly journals Distortion-Based Slice Level Prioritization for Real-Time Video over QoS-Enabled Wireless Networks

2012 ◽  
Vol 2012 ◽  
pp. 1-9
Author(s):  
Ismail A. Ali ◽  
Martin Fleury ◽  
Mohammed Ghanbari
Keyword(s):  
Wireless Networks ◽  
Quality Of Service ◽  
Real Time ◽  
Wireless Lan ◽  
Video Quality ◽  
Ieee 802.11E ◽  
Video Streams ◽  
The Impact ◽  
Prioritization Scheme

This paper presents a prioritization scheme based on an analysis of the impact on objective video quality when dropping individual slices from coded video streams. It is shown that giving higher-priority classified packets preference in accessing the wireless media results in considerable quality gain (up to 3 dB in tests) over the case when no prioritization is applied. The proposed scheme is demonstrated for an IEEE 802.11e quality-of-service- (QoS-) enabled wireless LAN. Though more complex prioritization systems are possible, the proposed scheme is crafted for mobile interactive or user-to-user video services and is simply implemented within the Main or the Baseline profiles of an H.264 codec.

Distributed TXOP Allocation Scheme in IEEE 802.11e Wireless LANs

2013 ◽  
Vol 284-287 ◽  
pp. 2904-2907
Author(s):  
Sunmyeng Kim
Keyword(s):  
Quality Of Service ◽  
Wireless Lans ◽  
Service Differentiation ◽  
Ieee 802.11E ◽  
Multimedia Traffic ◽  
Allocation Scheme ◽  
Delay Bound ◽  
Transmission Opportunity ◽  
Simulation Results

Multimedia traffic is expected to be one of the most important traffic types in wireless LANs. However, multimedia traffic is very sensitive to delay so that the traffic has to be transmitted to receivers within its delay bound. The IEEE 802.11e EDCA (Enhanced Distributed Channel Access) defines a TXOP (Transmission Opportunity) parameter to provide service differentiation and QoS (Quality of Service) of the traffic. A station can continuously transmit multiple packets for the duration of a TXOP. When stations support multimedia applications with different QoS requirements, fairness problem occurs. In order to alleviate the fairness problem, we propose a distributed TXOP allocation scheme based on the delay bound. In the proposed scheme, a station checks the delay bound of each data packet in the queue, and allocates its TXOP value to guarantee the delay bounds of all the packets in the queue. Simulation results show that the proposed scheme outperforms other TXOP allocation schemes.

Demand of Wireless Network and Security in Current Research

2015 ◽  
Vol 14 (6) ◽  
pp. 5809-5813
Author(s):  
Abhishek Prabhakar ◽  
Amod Tiwari ◽  
Vinay Kumar Pathak
Keyword(s):  
Wireless Networks ◽  
Quality Of Service ◽  
Wireless Network ◽  
Network Performance ◽  
Wireless Security ◽  
Human Intervention ◽  
Unauthorized Access ◽  
Quality Of Service Parameters ◽  
Wireless Infrastructure

Wireless security is the prevention of unauthorized access to computers using wireless networks .The trends in wireless networks over the last few years is same as growth of internet. Wireless networks have reduced the human intervention for accessing data at various sites .It is achieved by replacing wired infrastructure with wireless infrastructure. Some of the key challenges in wireless networks are Signal weakening, movement, increase data rate, minimizing size and cost, security of user and QoS (Quality of service) parameters... The goal of this paper is to minimize challenges that are in way of our understanding of wireless network and wireless network performance.

Towards Energy Efficient and Quality of Service Aware Cell Zooming in 5G Wireless Networks

2015 ◽  
Author(s):  
Hafiz Yasar Lateef ◽  
Muhammad Zeeshan Shakir ◽  
Muhammad Ismail ◽  
Amr Mohamed ◽  
Khalid Qaraqe
Keyword(s):  
Wireless Networks ◽  
Quality Of Service ◽  
Energy Efficient ◽  
Cell Zooming
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