Evolved Packet System (EPS) presents the EPS evolution of the 3G/UMTS standard introduced by the 3rd Generation Partnership Project (3GPP) standard committee. Interworking issues between EPS and IEEE 802.11 networks will become a new challenging problem. In this paper, we propose a fast seamless handoff scheme using a optimized PMIPv6 between IEEE 802.11 (WiFi) and EPS networks, without modifyi...

Conventional circuit-switched networks are increasingly being replaced by packet-based networks for voice communication applications. Additionally, there has been an increased deployment of services supporting speech based interactions. These trends demand reliable transmission of speech data not just for playback but also to ensure acceptable automatic speech recognition (ASR) performance. In ...

Mobile IPv6 allows a Mobile Node to remain reachable by a Correspondent Node while roaming from one network to another network. In Mobile IPv6, a Mobile Node directly updates its current location information to a Correspondent Node using a route optimization method. Route optimization helps to culminate the packet delay incurred due to suboptimal route traversed by the packets from a Correspond...

Compressed video sequences are very vulnerable to channel disturbances especially when they are transmitted over the packet erasure channels. The transmission errors 1 caused by packet loss not only corrupt the current decoded frame, but also cause the error propagation to the succeeding frames which degrades the quality of services. Therefore, it is considerably important to develop the error ...

The Internet uses a window-based congestion control mechanism in TCP (Transmission Control Protocol). In the literature, there have been a great number of analytical studies on TCP. Most of those studies have focused on the statistical behavior of TCP by assuming a constant packet loss probability in the network. However, the packet loss probability, in reality, changes according to packet tran...

Probe-based (active) measurements of packet loss have formed the basis for much of our empirical understanding of loss behavior in wide area networks. Routerbased (passive) loss measurements via SNMP, while not widely available, offer the potential for a more detailed perspective. In this paper we present a case study that quantitatively assesses and compares the viewpoints provided by both of ...

This paper uses simulation studies to explore the behaviour of SCTP congestion control. Several possible variants of SCTP congestion control are identified and each is compared with the behaviour of Reno TCP, a well-known TCP variant. We identify three flaws in the current SCTP congestion control mechanisms. 1. Efficient recovery after a packet loss is only possible if SCTP generates the option...

This work presents the incorporating of congestion control on the integrated routing protocol of the opportunistic networks. Pre-emptive congestion control strategies were incorporated into the integrated routing protocol. Results showed that the duplication avoidance improved the integrated routing protocol because it reduced the packet loss and improved the delivery probability. Duplication a...

This work presents the incorporating of congestion control on the integrated routing protocol of the opportunistic networks. Pre-emptive congestion control strategies were incorporated into the integrated routing protocol. Results showed that the duplication avoidance improved the integrated routing protocol because it reduced the packet loss and improved the delivery probability. Duplication a...

This work presents the incorporating of congestion control on the integrated routing protocol of the opportunistic networks. Pre-emptive congestion control strategies were incorporated into the integrated routing protocol. Results showed that the duplication avoidance improved the integrated routing protocol because it reduced the packet loss and improved the delivery probability. Duplication a...