In this paper we have considered a wireless mobile network with data/voice traffic. The paper, considered two type of channel assignment (1) with guard channel (2) without guard channel. In cellular mobile system, radio channels are very limited and mobility of mobile terminal occurs a phenomenon called handoff. Handoff is defined as process of transferring an ongoing call or data session from ...

Due to frequent handoff, Mobile IP has been confronted with some limitations. Cellular IP, one of micro-mobility protocols, was proposed to overcome these limitations and to provide good handoff performance. However, some drawbacks of Cellular IP like packet loss have been addressed. We propose an enhanced semi-soft handoff protocol based on a node’s decision to cope with these drawbacks. With ...

Received Jun 12, 2017 Revised Mar 30, 2017 Accepted Apr 14, 2017 The GSM, CDMA cellular systems are most trendy 2G and 3G digital cellular telecommunications systems, which is widely used throughout the world. These systems have many advantages such as high security, higher quality of call transmission over the long distances, low transmitted power, and enhanced capacity with more efficient uti...

In the latest cellular networks, data services like SNS and UCC can create asymmetric packet generation rates over the downlink and uplink channels. This asymmetry can lead to a downlink-uplink asymmetric channel condition being experienced by cell edge users. This paper proposes a handoff scheme to cope effectively with downlink-uplink asymmetric channels. The proposed handoff scheme exploits ...

In recent years, network technologies such as WLAN, GPRS, and 3G are getting more and more popular. There is high probability that signal coverage of these coexisting networks overlaps with each other. For a user roaming among these networks, it is desirable that his or her mobile device can have anytime connectivity, and therefore vertical handoff becomes an important issue. To achieve high pe...

This paper proposes a novel vertical handoff algorithm between WLAN and CDMA networks to enable the integration of these networks. The proposed vertical handoff algorithm assumes a handoff decision process (handoff triggering and network selection). The handoff trigger is decided based on the received signal strength (RSS). To reduce the likelihood of unnecessary false handoffs, the distance cr...

2 Assist. Prof. Dept. of Electronics & Communication Engg ,Meerut Institute of Engineering & Technology,Meerut [email protected] ABSTRACT Handoff mechanism is extremely important in cellular network because of the cellular architecture employed to maximize spectrum utilization. This unique feature has driven the rapid growth in the mobile network industry, changing it from a new technology i...

The main objectives of a handoff procedure are, first, to minimize the number of link transfers and second, to minimize the handoff processing delay by correct choice of target BS/AP with speedy execution. This minimizes the probability of connection interruptions and reduces the switching load. If the handoff is not fast enough, the quality of the service experiences degradations. A handoff sh...

Future wireless networks must be able to coordinate services within a diverse-network environment. One of the challenging problems for coordination is vertical handoff, which is the decision for a mobile node to handoff between different types of networks. While traditional handoff is based on received signal strength comparisons, vertical handoff must evaluate additional factors, such as monet...

Handoff management is a key issue in mobile network to provide an efficient and low-cost service. Providing seamless connectivity in high speed data networks is a challenge due to user mobility and varying user traffic patterns. The major challenges with high user mobility are (1) Frequent handoff which causes call dropping (2) Unavailability of resources in the target base station which also m...