Effects of Mobility on Mean Packet Delay Over Integrated Services Wireless Networks

2006 ◽  
Author(s):  
J. Padilla ◽  
J. Paradells ◽  
A. Rodriguez
Keyword(s):  
Wireless Networks ◽  
Packet Delay ◽  
Integrated Services

scholarly journals Saturation Throughput and Delay Performance Evaluation of the IEEE 802.11g/n for a Wireless Lossy Channel

2018 ◽  
Vol 14 (1) ◽  
pp. 51-64
Author(s):  
Salah Alabady
Keyword(s):  
Wireless Networks ◽  
Window Size ◽  
Packet Delay ◽  
Network Size ◽  
Wireless Channel ◽  
Distributed Coordination ◽  
Medium Access ◽  
Saturation Throughput ◽  
Delay Performance ◽  
Transmission Errors

Non-ideal channel conditions degrade the performance of wireless networks due to the occurrence of frame errors. Most of the well-known works compute the saturation throughput and packet delay for the IEEE 802.11 Distributed Coordination Function (DCF) protocol with the assumption that transmission is carried out via an ideal channel (i.e., no channel bit errors or hidden stations), and/or the errors exist only in data packets. Besides, there are no considerations for transmission errors in the control frames (i.e., Request to Send (RTS), Clear to Send (CTS), and Acknowledgement (ACK)). Considering the transmission errors in the control frames adds complexity to the existing analysis for the wireless networks. In this paper, an analytical model to evaluate the Medium Access Control (MAC) layer saturation throughput and packet delay of the IEEE 802.11g and IEEE 802.11n protocols in the presence of both collisions and transmission errors in a non-ideal wireless channel is provided. The derived analytical expressions reveal that the saturation throughput and packet delay are affected by the network size (n), packet size, minimum backoff window size (Wmin), maximum backoff stage (m), and bit error rate (BER). These results are important for protocol optimization and network planning in wireless networks.

scholarly journals A NEW QoS GUARANTEE SLA BASED-SCHEME FOR HANDOFF CALLS IN WIRELESS NETWORKS

2017 ◽  
Vol 25 (1) ◽  
pp. 61-66
Author(s):  
Nguyen Cao Phuong ◽  
Tran Hong Quan ◽  
Sang-Ho Lee ◽  
Jung-Mo Moon
Keyword(s):  
Wireless Networks ◽  
Traffic Control ◽  
Service Providers ◽  
Blocking Probability ◽  
Service Level Agreement ◽  
Packet Delay ◽  
Service Level ◽  
Qos Guarantee ◽  
Handoff Call ◽  
And Performance

The most important thing is guarantee QoS over wireless infrastructures. The efficient of service level agreement (SLA) is becoming increasingly important to both service providers and customers. This paper presents some traffic control schemes for improving QoS, trafficmodel and performance evaluation are described. We are defining a new scheme for improving handoff call performances in wireless networks, a finite queuing scheme for the handoff calls. SLA measurement calculates the packet delay parameter (PD) of handoff calls. The handoff calls will be accepted into queue if their PD will be smaller than the average waiting time of the queue. Important performance measures of the suggested scheme such as the blocking probability of new call and dropping probability of handoff call are described and evaluated.  

Building New Reliable Wireless Network by Using Distributed Control

2011 ◽  
Vol 84-85 ◽  
pp. 160-166
Author(s):  
Xin Ying Wang
Keyword(s):  
Wireless Networks ◽  
Wireless Network ◽  
Distributed Control ◽  
Network Architecture ◽  
Large Scale ◽  
Complex Function ◽  
Packet Delay ◽  
Control Performance ◽  
Wireless Data ◽  
Packet Losses

With the development of the pioneering deployments in multi-hop wireless networks, although the relative research have not proven successful. The performance of routing and transport is often unstable due to contention induced packet losses, especially when the network is large and the offered load is high. A reliable wireless network architecture by using distributed control for large-scale multi-hop wireless networks has been present in this paper, The design objective is to optimize the control performance. This control performance is a complex function of the network parameters, such as throughput, packet delay and packet loss probabilities. The goal of optimizing the control performance imposes implicit tradeoffs on the wireless network design as opposed to the explicit tradeoffs typical in wireless data and voice applications. Our analysis suggests that our approach will deliver improved service to users while greatly reducing support effort and cost.

Optimal access control for integrated services wireless networks

1998 ◽  
Vol 21 (17) ◽  
pp. 1559-1570
Author(s):  
Vittoria de Nitto Personè ◽  
Vincenzo Grassi
Keyword(s):  
Wireless Networks ◽  
Access Control ◽  
Integrated Services
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