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At present, the number of Internet subscribers accessing Internet through mobility terminal equipment and other new types is gradually increasing, which shows it's important to develop mobility management protocols in order to provide mobility support for the subscribers. Several protocols were proposed to support IP mobility in the IETF, such as MIPv6, HMIPv6, FMIPv6 and F-HMIPv6. Some performance...
The handover technology is one of the most important technologies for the quality of real-time operation. In Hierarchical Mobile IPv6 (HMIPv6), duplicate address detection (DAD) process is necessary for confirming uniqueness of IPv6 address when Mobile Node moves to a new network. It is desirable to reduce DAD delay especially if nodes wish to run real-time application on the mobile IPv6 networks...
With the development of wireless and mobile Internet technology, people in everyday life and business hope for access to the Internet even while they are in movement. IEEE 802.20 technology is mobile and can effectively address high-speed network access. In this paper the PHY layer model for simulating 802.20 in SIMULINK and subsystems in MATLAB S-function files are presented. To evaluate the performance...
Mobility of user devices connecting to the Internet is of major interest in today's research in networking. For users as well as for applications, network mobility should be transparent. Reliable transport protocols like TCP has served well the wired Internet where the packet losses are mainly due to congestion, but is not ready for mobile IP wired-cum-wireless environments where the significant packet...
WiBro (Mobile WiMAX) is a broadband wireless internet service supporting for fixed, portable and mobile users, but enhancement of service quality in indoor environment is still necessary. WiBro femtocell is developed to expand cell coverage, increase system capacity and offer various multimedia service with high throughput in indoor environment. Three types of femtocell are designed according to the...
Wireless mesh network (WMN) has become a popular access network architecture. But because of its multi-hop nature, co-channel interference and contention, the attainable capacity of a wireless node in a WMN is significantly less than the radio capacity. We propose a overlay architecture for a WMN, where a wireless-ring (WRing) is deployed over the regular mesh for carrying wireless mesh traffic only...
The modern and dynamic world has imposed pressure on technologies to match the speed at which the world is moving. Responding to the challenge, third generation (3G) technologies have introduced a new era of mobility not only for cellular phones but also for broadband services. With the rise of high bandwidth demand applications, a number of challenges emerge. This paper presents results obtained...
The increasing ubiquity of mobile embedded systems has been matched by the evolution of a variety of wireless network standards and technologies. The major constraints of wireless embedded systems are limitations of communication bandwidth, processing capabilities, and battery power. Remote wireless embedded systems often act as sensors, which provide data to a certain community. The exchange of data...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
Mobile IPv6 is a novel technology that supports mobile Internet communications. When a mobile node approaches another scalable domain, such as another ISP or mobile network company, serious problems occur such as registration delay and transmission latency owing to the binding update that the mobile node registers back to its original home agent. This work attempts to construct a scalable mobile IPv6...
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