Integration of pricing with call admission control to meet QoS requirements in cellular networks Tập 13 Số 9 - Trang 898-910 - 2002
Jiongkuan Hou, Jie Yang, S. Papavassiliou
Call admission control (CAC) plays a significant role in providing the desired quality of service (QoS) in cellular networks. We investigate the role of pricing as an additional dimension of the call admission control process in order to efficiently and effectively control the use of wireless network resources. First, we prove that, for a given wireless network, there exists a new call arrival rat...... hiện toàn bộ
#Pricing #Call admission control #Intelligent networks #Land mobile radio cellular systems #Quality of service #Wireless networks #Admission control #Resource management #Aggregates #Communication system traffic control
Locating mobile agents in a wide distributed environment Tập 13 Số 8 - Trang 844-864 - 2002
A. Di Stefano, C. Santoro
Finding the position of a mobile agent in a wide distributed system still represents an open research issue. The paper proposes a naming scheme and a location protocol of general validity for mobile agents able to effectively meet all the typical requirements of mobile agent environments and, thus, easy to integrate into different platforms. The paper identifies the main characteristics which an a...... hiện toàn bộ
#Mobile agents #Protocols #Programming profession #Performance evaluation #Power system modeling #Scalability #Humans
Optional and responsive fine-grain locking in Internet-based collaborative systems Tập 13 Số 9 - Trang 994-1008 - 2002
Chengzheng Sun
Locking is a standard technique used in distributed computing and database systems to ensure data integrity by prohibiting concurrent conflicting updates on shared data objects. Internet-based collaborative systems are a special class of distributed applications which support human-to-human interaction and collaboration over the Internet. In this paper, a novel optional and responsive fine-grain l...... hiện toàn bộ
#Internet #Collaboration #Distributed computing #Delay #Database systems #Real time systems #Collaborative work #Sun #Protocols #Usability
A study of adaptive forward error correction for wireless collaborative computing Tập 13 Số 9 - Trang 936-947 - 2002
P.K. McKinley, Chiping Tang, A.P. Mani
This paper addresses the problem of reliably multicasting Web resources across wireless local area networks (WLANs) in support of collaborative computing applications. An adaptive forward error correction (FEC) protocol is described, which adjusts the level of redundancy in the data stream in response to packet loss conditions. The proposed protocol is intended for use on a proxy server that suppo...... hiện toàn bộ
#Forward error correction #Collaboration #Wireless LAN #Multicast protocols #Computer applications #Computer networks #Application software #Redundancy #Network servers #Software architecture
Observations on using genetic-algorithms for channel allocation in mobile computing Tập 13 Số 9 - Trang 948-962 - 2002
A.Y. Zomaya, M. Wright
This paper highlights the potential of using genetic algorithms to solve cellular resource allocation problems. The objective in this work is to gauge how well a GA-based channel borrower performs when compared to a greedy borrowing heuristic. This is needed to establish how suited GA-like (stochastic search) algorithms are for the solution of optimization problems in mobile computing environments...... hiện toàn bộ
#Channel allocation #Mobile computing #Resource management #Availability #Bandwidth #Radio frequency #Radio spectrum management #Microcell networks #Genetic algorithms #Land mobile radio cellular systems
An efficient synchronization scheme of multimedia streams in wireless and mobile systems Tập 13 Số 9 - Trang 911-923 - 2002
A. Boukerche, Sungbum Hong, T. Jacob
Recent advances in mobile computing and distributed multimedia systems allow mobile hosts (clients) to access wireless multimedia systems anywhere and at anytime, but not without creating a new set of issues and trade-offs. To the best of our knowledge, there has been very little research in dealing with the synchronization problem in wireless and mobile multimedia systems. In this paper, we propo...... hiện toàn bộ
#Streaming media #Multimedia systems #Mobile computing #Wireless communication #Multimedia computing #Wireless networks #Multimedia communication #Time factors #Base stations #Bandwidth
On load balancing for distributed multiagent computing Tập 13 Số 8 - Trang 787-801 - 2002
Ka-Po Chow, Yu-Kwong Kwok
Multiagent computing on a cluster of workstations is widely envisioned to be a powerful paradigm for building useful distributed applications. The agents of the system span across all the machines of a cluster. Just like the case of traditional distributed systems, load balancing becomes an area of concern. With different characteristics between ordinary processes and agents, it is both interestin...... hiện toàn bộ
#Load management #Distributed computing #Multiagent systems #Workstations #Software agents #Computer networks #Humans #Measurement #Clustering algorithms #Software systems
On the asymptotical optimality of multilayered decentralized consensus protocol Tập 13 Số 8 - Trang 769-786 - 2002
Cheng-Ru Lin, Ming-Syan Chen
A decentralized consensus protocol refers to a process for all nodes in a distributed system to collect the information/status from every other node and reach a consensus among them. Two classes of decentralized consensus protocols have been studied before: the one without an initiator and the one with an initiator. While the one without an initiator has been well studied in the literature, it is ...... hiện toàn bộ
#Protocols #Performance analysis #Distributed computing #Message passing #Distributed processing #Availability #Costs #Clocks #Synchronization #Broadcasting
Adaptive bandwidth reservation and admission control in QoS-sensitive cellular networks Tập 13 Số 9 - Trang 882-897 - 2002
Sunghyun Choi, K.G. Shin
How to keep the probability of hand-off drops within a prespecified limit is a very important quality-of-service (QoS) issue in cellular networks because mobile users should be able to maintain ongoing sessions even during their hand-off from one cell to another. We design and evaluate predictive and adaptive schemes for bandwidth reservation for the hand-offs of ongoing sessions and the admission...... hiện toàn bộ
#Programmable control #Adaptive control #Bandwidth #Admission control #Land mobile radio cellular systems #Quality of service #Maintenance #Aggregates #History #Navigation
Balancing buffer utilization in meshes using a "restricted area" concept Tập 13 Số 8 - Trang 814-827 - 2002
Po-Jen Chuang, Juei-Tang Chen, Yue-Tsuen Jiang
Adaptive routing and virtual channels are used to increase routing adaptivity in wormhole-routed two-dimensional meshes. But increasing channel buffer utilization without considering even distribution of the traffic loads tends to cause congestion in the most adaptive routing area. To avoid such traffic congestion, a concept of the restricted area is proposed. The proposed restricted area, defined...... hiện toàn bộ
#Routing #Telecommunication traffic #Traffic control #Throughput #Pipelines #Degradation #Delay effects #System recovery #Guidelines