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Mobile IPv6 (MIPv6) is the current standard for end host mobility management in the Internet. In order to provide location management, MIPv6 operates in two different modes while the mobile node (MN) is away from its home. In the first mode, the MN incoming packets are tunneled to the MN current location via the home network. In the second mode, the traffic is exchanged directly between the MN and...
In this article, we are interested in improving the handover quality of Host Identity Protocol (HIP) in the case of micro mobility by (i) proposing the Local Rendezvous Server architecture as a first attempt to minimize the handover delay in the mobility process, (ii) introducing an adaptive early update mechanism to improve the handover quality during mobility by introducing early HIP (eHIP) and...
TCP's downlink performance during FMIPv6-enabled IEEE802.11g handoff is examined. The use of a user-initiated Handoff Notification, sent prior to handoff, is proposed. Therefore, the correspondent node is aware of the handoff-induced disruption, hence avoiding dropping the congestion window size and triggering Fast Retransmission mechanisms. During handoff, it continues to send data packets which...
This paper proposes an analytic model to study queuing effect on the handoff performance of Mobile IPv6 (MIPv6), which has not been particularly investigated in previous literature. The presented model regards handoff process as tandem service system, and adopts a simple two-moment approximation throughout the theoretic modeling. Without other specific assumptions, the model presents a generic approach...
The packer switching service of the third-generation mobile communication network (3G) has provide a broader range of services, while wireless local area network (WLAN) has a faster speed in information transmission, thus making these two complementary functionally. However, with the improvement of technology and increasing of mobile users, it has a significant impact on network communication when...
This paper proposes a measurement mechanism of IP performance metrics for network mobility (NEMO) in heterogeneous wireless networks. The key idea of the proposed mechanism is that mobile nodes (MNs) can get IP performance metrics irrespective of the presence or absence of measurement functionality. That is, the proposed mechanism does not require MNs to be involved in measuring IP performance metrics...
Recently, the demanding requirements and use for wireless communication are increased and continue to grow. WiBro is trying to compete with Wi-Fi in coverage and data rate, while the inexpensive Wi-Fi still very popular in both personal and business use. This paper designs and implements Fixed Mobile Convergence (FMC) terminal system supported IEEE802.11 b/g/n Wi-Fi and WiBro. Terminal system of this...
In this paper, we present the design and the implementation of a test-bed for the Policy and Charging Control (PCC) system proposed in 3GPP TS23.203. Specifically, we use an IP multimedia call service example to demonstrate how to implement an advanced mobile service with policy and charging control in our test-bed. We show that the PCC system can handle the application-level session information and...
Wireless sensor networks have become very useful in so many applications. Applications such as grape monitoring, insect movement monitoring and etc., that allows connectivity between sensor network and Internet can solve many remote control and monitoring problems. IPv6 over low power WPAN (6lowPAN) protocols are suitable technology that can be adapted in wireless sensor network. The deployment of...
In the IPv4 network, a mobile node is expected to move between a global address network and a private address network during communication. We have already proposed a mobility mechanism that applies the principle of hole-punching, widely known as ??NAT traversal technology??, when a NAT exists on a communication path. It can realize mobility over different types of address areas. In this paper, we...
Nowadays, the requirement of Internet is increasing in more and more heterogeneous scenarios; especially in mobile platforms, such as Planes, trains and buses. NEMOWG (network mobility workging group) a new working group in IETF (Internet Engineering Task Force) is formed to provide mechanisms to manage the mobility of a network as a whole, enabling that network to change its point of attachment to...
A research on the related technology and implementation of IP phone based on WiFi network is discussed in this paper; it includes the net structure of the technology used in designing the terminal of IP phone. This technology is a form of telecommunication that allows data and voice transmissions to be sent across a wide range of interconnected networks. A WiFi enabled IP phone is used which is preinstalled...
As the next generation Internet (NGI) is coming, and with the rapid development and great research progress achieved, mobile Internet Protocol version 6 (MIPv6) based network has become a hotspot all over the world. Considering of the rapid growth of network service quality and data exchange requirement, we are going to propose a new data exchange method in this paper. This method uses resource reservation...
The address auto-configuration of MIPv6 mobile nodes relies on the availability of a router advertisement (RA) messages from the access router responsible of the subnet, which the terminal is moving towards. If the mobile node does not receive an RA message by a certain period, it sends a router solicitation (RS) message to request router information. This phase is critical during handoff procedures...
In this paper, we propose the two-tiered proxy system(TOPS) that supports seamless multimedia service in mobile computing environment. TOPS is composed of a media proxy and mobile proxy. The media proxies are responsible for media streaming service. The mobile proxies support the wireless communication and mobility of the mobile host. The media proxy manages all media services in its management domain...
In order to help ISPs to deploy a mobile IP network into current Internet environment with satisfying users' mobility requirements, this paper evaluates and compares the performance of MIPv4 and MIPv6 networks. This paper shows that TCP performance in MIPv6 network outperforms that of MIPv4 network in terms of amount of dropped packets and lasting the connection with mobile node and corresponding...
Reducing packet loss and delay during handovers is of major importance in mobile networks. However, various handover proposals reported at the Internet engineering task force (IETF) have failed to minimize both these factors. In this document, we propose a novel context aware seamless handover scheme for local mobility in next generation IP networks. The proposed scheme considers the bandwidth requirements...
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