Network is on tremendous increase due its ease, non-intrusive, inexpensive deployment,
low maintenance cost, universal coverage and basic roaming capabilities. However …

The IEEE 802.16 standard defines three types of scheduling services for supporting real-
time traffic, unsolicited grant service (UGS), real-time polling service (rtPS), and extended …

The Long Term Evolution (LTE) is a high data rates and fully All-IP network. Scheduling and
resource allocation are very important tasks in LTE network. So that, the optimization of the …

In this paper, we optimize low speed networks access for designing an efficient Voice over
Internet Protocol network, especially in 64 kbps, 128 kbps, and 256 kbps bandwidth …

A simulation model is presented to analyze and evaluate the performance of VoIP based
integrated wireless LAN/WAN with taking into account various voice encoding schemes. The …

IEEE802. 16 technology due to its outstanding larger coverage area, high data rates,
inexpensive equipments, ease of deployment and guaranteed QoS make it a suitable …

WLANs have become a ubiquitous networking technology deployed everywhere.
Meanwhile. VoIP is one popular application and a viable alternative to traditional telephony …

Voice over IP (VoIP) or IP telephony is a very popular way of communication not only for
single users but also for big enterprises. Due to fast-growing wireless technology and ease …

Voice over IP (VoIP) and wireless networks are technologies that are receiving an
increasing interest by both, the research community and the final users. For instance, the …

One important issue in 3G wireless systems is to port voice service to the new packet-data-
based platform while retaining the quality of service (QoS) that users associate with present …