Voice over IP performance monitoring
ACM SIGCOMM Computer Communication Review
On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
Supporting voice and video applications over IEEE 802.11n WLANs
Wireless Networks
Analysis of IEEE 802.11e for QoS support in wireless LANs
IEEE Wireless Communications
IEEE 802.11n: enhancements for higher throughput in wireless LANs
IEEE Wireless Communications
IEEE 802.11n MAC frame aggregation mechanisms for next-generation high-throughput WLANs
IEEE Wireless Communications
An Enhanced A-MSDU Frame Aggregation Scheme for 802.11n Wireless Networks
Wireless Personal Communications: An International Journal
Comprehensive Structure of Novel Voice Priority Queue Scheduling System Model for VoIP Over WLANs
International Journal of Advanced Pervasive and Ubiquitous Computing
Wireless Communication Technologies for Vehicular Nodes: A Survey
International Journal of Mobile Computing and Multimedia Communications
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The IEEE 802.11-based WiFi wireless technology is one of the most promising technologies to provide ubiquitous networking access. The IEEE 802.11 working group has always strived to improve this wireless technology through creating new amendments to the base 802.11 standard. Recently, IEEE 802.11n amendment was created to enhance 802.11 for higher throughput operation. Not only new Physical Layer enhancements are standardized, but new Medium Access Control Layer mechanism are also defined. In this paper, we examine the network performance enhancement by the proposed 802.11n MAC layer features: aggregation, block acknowledgement, and reverse direction mechanism. We implemented a new 802.11n module in the NS-2 simulation platform. The simulation results demonstrated the effectiveness of 802.11n MAC layer enhancement. VoIP performance is effectively improved with 802.11n MAC enhancement.