نتایج جستجو برای: handoff

تعداد نتایج: 2490  

Journal: :IEEE Trans. Intelligent Transportation Systems 2003
Young-uk Chung Dong-Ho Cho

To support multimedia services in intelligent transportation systems (ITS), CDMA based radio-on-fiber road-vehicle communication systems were proposed. Soft handoff should be provided for multimedia services because these services are required to guarantee real-time property and quality of service (QoS). The performance evaluation of soft handoff is important in view of system management such a...

Journal: :Computer Networks 2004
Yan Zhang Boon-Hee Soong

In mobile computing scenario, the number of handoff (called as handoff counting) is very important for the signalling network design and traffic load analysis. In this paper, we study the handoff counting characteristics in terms of probability mass function (pmf) and statistical moments in the hierarchical cellular system applying overflow scheme under the general cell residence time and gener...

Journal: :JSW 2013
Bin Ma Xiaofeng Liao Xianzhong Xie

Currently, to ensure seamless roam across heterogeneous wireless technologies, efficient vertical handoff algorithms are required to enhance QoS and offer reliable pervasive computing environment. This study reviews traditional and classical artificial intelligent approaches adopted for vertical handoff across heterogeneous networks. A type-2 fuzzy multi-parameter based vertical handoff decisio...

2011
Shusmita Anwar Sharna M. Manzur Murshed

During the vertical handoff procedure, handoff decision is the most important step that affects the normal working of communication. An incorrect handoff decision or selection of a non-optimal network can result in undesirable effects such as higher costs, poor service experience, degrade the quality of service and even break off current communication. The objective of this paper is to determin...

2003
Buyurman Baykal Özgür B. Akan

The handoff call blocking probability minimization is an important issue for seamless wireless network operation. Handoff delay minimization is in parallel with this task. Mobile stations with QoS requirements should be able to receive the same service level during and after handoff. This constraint amplifies the handoff latency caused forced termination problem. This research introduces a hand...

2009
Prafulla Kumar Behera

Designing of heterogeneous wireless environment involves several internetworking issues, such as seamless handoff or roaming, mobility management, security and accounting problem etc. One of the major issues in next– generation heterogeneous networks is the issue of vertical handoff for guaranteeing service continuity and quality of service. This paper reports on the design and implementation o...

2006
Bih-Hwang Lee Su-Shun Huang Hsin-Pei Chen

For handoff in wireless ATM networks, a call might be rerouted because ATM basically provides connection-oriented service. We propose an enhanced hybrid rerouting scheme (EHRS) for handoff in wireless ATM networks, which combines the concepts of multicast rerouting, anchor rerouting, path extension and dynamic rerouting methods to effectively reduce handoff call dropping ratio, new call blockin...

1998
Rajat Prakash Venugopal V. Veeravalli

Previous work on estimating the performance of hard handoff algorithms has been based on Monte-Carlo simulations or asymptotic approximations. A new analysis technique for evaluating the performance of handoff algorithms is introduced. This technique may be used to accurately estimate the performance of both optimal and suboptimal handoff algorithms. Specifically, the technique allows for the c...

Journal: :Journal of hospital medicine 2015
Mahadevappa Hunasikatti

BACKGROUND Handoffs of patient care are a leading root cause of medical errors. Standardized techniques exist to minimize miscommunications during verbal handoffs, but studies to guide standardization of printed handoff documents are lacking. OBJECTIVE To determine whether variability exists in the content of printed handoff documents and to identify key data elements that should be uniformly...

Journal: :Journal of the American Medical Informatics Association : JAMIA 2014
Joanna Abraham Thomas George Kannampallil Vimla L. Patel

OBJECTIVE Given the complexities of the healthcare environment, efforts to develop standardized handoff practices have led to widely varying manifestations of handoff tools. A systematic review of the literature on handoff evaluation studies was performed to investigate the nature, methodological, and theoretical foundations underlying the evaluation of handoff tools and their adequacy and appr...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید