by

DOI: 10.1023/A:1018738120864
Print publication date: 3/1/1998
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by Vera, Eduardo S.

DOI: 10.1023/A:1018786004025
Print publication date: 3/1/1998
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by Ray, Pradeep

DOI: 10.1023/A:1018734019955
Print publication date: 3/1/1998
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by Hong, James Won-Ki

DOI: 10.1023/A:1018781903117
Print publication date: 3/1/1998
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by Khasnabish, Bhumip; Ahmadi, Majid

This paper presents a traversed pathtracking-based technique for integrated mobility andquality-of-service (QoS) management of connections incellular wireless ATM networks. Simulation andanalytical results for probabilities of connectionBlocking, Dropping, and Unsuccessful Connections aredetermined. A distributed operating system-basedarchitecture for implementation of integrated mobilityand QoS control is then proposed. The objective is totreat mobility as a network impairment triggeredactivity which is to be handled via QoS management.Depending on the speed of the mobile unit and thecategory of service being used, the QoS of a connectionmay or may not vary continuously during a session. Theresults presented here consider coexistence of constantbit-rate and nonreal-time variable bitrate ATM connections over a single session.

DOI: 10.1023/A:1018729919047
Print publication date: 3/1/1998
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by Leonhardt, Ulf; Magee, Jeff

Mobile computing, wireless communications, andcheap location tracking and navigation systems have madelocation data a valuable and available commodity formany different kinds of computing applications. However, there are fears that this new wealthof personal location information will lead to newsecurity risks, to the invasion of the privacy of peopleand organizations. In this paper, we discuss security requirements faced by a location service indifferent organizational contexts. We argue thatfine-grained access control requires a symbolic locationmodel over which access control is specified. We outline the salient features of a location servicesupporting such a location model. The two main classicalsecurity models, Lampson’s access matrix andBell-LaPadula’s security labels, are analyzed with viewto their application to location information. Weargue that those schemes need to be generalized to dealwith multiple targets in order to be applicable tolocation information. Based on the generalized models, we propose a concrete security model forlocation information which protects both personal andorganizational privacy. We have implemented this modelover a prototype implementation of a general location service.

DOI: 10.1023/A:1018777802208
Print publication date: 3/1/1998
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by Korpeoglu, Ibrahim; Dube, Rohit; Tripathi, Satish K.

Current general purpose mobility solutions likeMobile-IP involve multiple router-crossings even whenthe mobile host moves within an intranet from one subnetof a router to another. An environment consisting of a large number of mobile hosts would congestthe router causing hosts to experience high latency andjitter. This paper presents a mechanism to eliminatemultiple router-crossings in a mobile intranet by making the routers aware of mobility, whichreduces the load on the routers and the hand-off anddata latency at the mobile hosts.

DOI: 10.1023/A:1018773701300
Print publication date: 3/1/1998
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by Cho, Gihwan

Using the Internet as a foundation for wirelessnetworking, there is currently a great deal of interestin providing IP networking support for mobile hosts. Asa result of IPs reliance on the entire Internet address for host identification, most proposalsdepend on a default route through the mobile host’s homeaddress, which makes for unnecessarily long routes. Thispaper introduces two concepts, “localregion” and “patron service”, based on thelocality features of host moving and calling patterns.It then shows how these concepts work together torealize a location management scheme for achievingoptimal routing for most traffic while restricting costlylocation propagation. The proposed scheme wasimplemented using a network simulator and evaluated fromrouting effectiveness point of view, as compared withits location overhead.

DOI: 10.1023/A:1018725818138
Print publication date: 3/1/1998
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by Neumair, Bernhard; Wies, Rene

DOI: 10.1023/A:1018721717229
Print publication date: 3/1/1998
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by Suryanarayana, Manjunath M.

Interfaces between software modules, processesand programs remain a serious problem for the softwareindustry. The Internet makes it even more important tosolve these problems and mobile computing makes robust design of interfaces critical. Thisdescription of research on improving CORBA interfacesthrough OMSOFT attracted me to one reasonable solutionto the problem. It uses the classic divide and conquer approach to separate interface concerns fromapplication ones. It promises to let developers avoidthe problems of undesired interactions between softwareartifacts in a well-structured way. Network and systems management applications need suchapproaches as so much of their work isinterfacing.

DOI: 10.1023/A:1018769600391
Print publication date: 3/1/1998
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