Voice and video calling over LTE – securing high-quality communication services over IP networks

Voice and video calling over LTE – securing high-quality communication services over IP networks

ارزیابی سیاست‌های زمان‌بندی در نسل چهارم شبکه‌های سلولی (LTE)

New generation of wireless networks, LTE and WiMAX, supports many services which consume a lot of resources (such as VOIP, Video Conference, Digital Video, Multimedia streams and online Multi-player Games). Supporting multi-media services in wireless communication systems provide new resource allocation challenges. Because of high loads in downlink, efficient resource allocation is vital in dow...

Performance Analysis of Virtual Private Network for Securing Voice and Video Traffic

Security and privacy become mandatory requirements for voice and video communications that needs security services such as confidentiality, integrity, authentication, non-replay and non repudiation. Stringent quality of service (QOS) maintenance for voice & video communication is a major challenge. New security solutions must take into account the real-time constraint of voice & video and their...

Secure Voice-over-IP

Voice-over-IP (VoIP) is one of the main applications or services, which dramatically increased the spread and usage of the Internet. VoIP describes the transmission and reception of voice and video data over networks that use the “internet protocol” (IP) as transport protocol. With the use of VoIP within company networks (intranet) investors hope to reduce the expenses for infrastructure and ma...

The Feedback Based Mechanism for Video Streaming Over Multipath Ad Hoc Networks

Ad hoc networks are multi-hop wireless networks without a pre-installed infrastructure. Such networks are widely used in military applications and in emergency situations as they permit the establishment of a communication network at very short notice with a very low cost. Video is very sensitive for packet loss and wireless ad-hoc networks are error prone due to node mobility and weak links. H...