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Handover

About: Handover is a research topic. Over the lifetime, 24219 publications have been published within this topic receiving 296416 citations. The topic is also known as: handoff.


Papers
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Patent
11 Apr 2002
TL;DR: In this paper, the authors present a network selection system that includes a mobile terminal in communication with a first network, a second network in communications with the first network and an application layer triggering mechanism that determines which one of a plurality of triggers is required in a certain set of circumstances to provide a particular application.
Abstract: A network selection system that includes a mobile terminal in communication with a first network, a second network in communication with the first network and an application layer triggering mechanism that determines which one of a plurality of triggers is required in a certain set of circumstances to provide a particular application.

198 citations

Proceedings ArticleDOI
19 Jun 2006
TL;DR: The architecture and protocols of SMesh, a completely transparent wireless mesh system that offers seamless, fast handoff, supporting VoIP and other real-time application traffic for any unmodified 802.11 device, are presented.
Abstract: This paper presents the architecture and protocols of SMesh, a completely transparent wireless mesh system that offers seamless, fast handoff, supporting VoIP and other real-time application traffic for any unmodified 802.11 device. In SMesh, the entire mesh network is seen by the mobile clients as a single, omnipresent access point.Fast handoff is achieved by ensuring that each client is served by at least one access point at any time. Mobile clients are handled by a single access point during stable connectivity times. During handoff transitions, SMesh uses more than one access point to handle the moving client. Access points continuously monitor the connectivity quality of any client in their range and efficiently share this information with other access points in the vicinity of that client to coordinate which of them should serve the client.Experimental results on a fully deployed mesh network consisting of 14 access points demonstrate the effectiveness of the SMesh architecture and its handoff protocol.

198 citations

Patent
18 Nov 2010
TL;DR: In this article, the authors proposed a protocol for forward handover in a wireless communication system, where the UE detects a connection failure in a communication with a source eNodeB.
Abstract: Techniques for performing forward handover in a wireless communication system are disclosed. In one aspect, a user equipment (UE) transmits a connection request to a target eNodeB. The connection request may be transmitted when the UE detects a connection failure in a communication with a source eNodeB. The UE receives a connection response from the target eNodeB in response to the target eNodeB requesting handover preparation information from the source eNodeB. In another aspect, a target eNodeB may receive a connection request from a user equipment (UE) and transmit a radio link failure (RLF) recovery request message to a source eNodeB to prompt the source eNodeB to initiate handover of the UE from the source eNodeB.

196 citations

Journal ArticleDOI
TL;DR: An "integrated mobility modeling tool" which considers the basic mobility models as components is proposed, aiming at the development of a refined modeling approach, to justify the applicability of the proposed integrated tool for both the analysis of design aspects and network planning.
Abstract: In mobile communications, mobility modeling is involved in several aspects related to signaling and traffic load analysis. In third-generation systems, the influence of mobility on the network performance (e.g., handover rate) will be strengthened, mainly due to the huge number of mobile users in conjunction with the small cell size. In particular, the accuracy of mobility models becomes essential for the evaluation of system design alternatives and network implementation cost issues. The authors propose three basic types of mobility models, which are appropriate for the analysis of the full range of mobile communications design issues. The models provide different levels of detail regarding the user mobility behavior. In particular, (a) the city area model traces user motion at an area zone level, (b) the area zone model considers users moving on a street network, and (c) the street unit model tracks user motion with an accuracy of a few meters. The validity of the basic models for mobile communications design aspects is highlighted. Moreover, an "integrated mobility modeling tool" which considers the basic mobility models as components is proposed, aiming at the development of a refined modeling approach. This is achieved by improving the accuracy of the input parameters of each basic model via the exchange of some specific (mobility-related) parameters among the component models. To justify the applicability of the proposed integrated tool for both the analysis of design aspects and network planning, indicative results are presented, derived from simulation-based application examples of the three basic mobility models.

195 citations

Journal ArticleDOI
TL;DR: The performance of the proposed DCA technique has been derived by computer simulations in terms of call blocking and handover failure probabilities and comparisons with the classical fixed channel allocation (FCA) technique and other dynamic allocation algorithms recently proposed in the literature have been carried out to validate the proposed technique.
Abstract: This paper deals with an efficient dynamic channel allocation (DCA) technique applicable to terrestrial mobile cellular networks. A channel (or resource) is a fixed frequency bandwidth (FDMA), a specific time-slot within a frame (TDMA), or a particular code (CDMA), depending on the multiple access technique used. A cost function has been defined by which the optimum channel to be assigned on demand can be selected. In addition, a suitable mobility model has been derived to determine the effects of handovers on network performance. The performance of the proposed DCA technique has been derived by computer simulations in terms of call blocking and handover failure probabilities. Comparisons with the classical fixed channel allocation (FCA) technique and other dynamic allocation algorithms recently proposed in the literature have been carried out to validate the proposed technique. >

195 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023338
2022759
2021511
2020816
2019824
2018865