Bluetooth scatternets: an enhanced adaptive scheduling scheme Tập 2 - Trang 782-790 vol.2
S. Baatz, M. Frank, C. Kuhl, P. Martini, C. Scholz
The vision of ad-hoc networking with Bluetooth includes the concept of devices
participating in multiple "piconets" and thereby forming a "scatternet".
However, the details of scatternet support for Bluetooth are not specified yet.
This paper presents a scheme for Bluetooth scatternet operation that adapts to
varying traffic patterns. Being based on sniff mode, it does not require
substantial modi... hiện toàn bộ
#Bluetooth #Personal area networks #Adaptive scheduling #Master-slave #Spread spectrum communication #Space technology #Personal digital assistants #Mobile handsets #Job shop scheduling #Frequency conversion
On the throughput achievable by isolated and interconnected input-queueing switches under multiclass traffic Tập 3 - Trang 1605-1614 vol.3
E. Leonardi, M. Mellia, M.A. Marsan, F. Neri
Many studies provide an extended investigation of the maximum throughput
achievable in input-queueing (IQ) or combined-input-and-output-queueing (CIOQ)
packet switches. Some scheduling policies, among which are maximum weight
matching algorithms, were identified as optimal, in the sense that they were
proved to achieve 100% throughput under any admissible single-class traffic
pattern. Most of the ... hiện toàn bộ
#Throughput #Switches #Scheduling algorithm #Packet switching #Traffic control #Fabrics #Telecommunication traffic #Algorithm design and analysis #Pattern matching #Lyapunov method
Network layer search service using oriented multicasting Tập 3 - Trang 1346-1355 vol.3
D. Magoni, J.-J. Pansiot
Many protocols and applications need a discovery mechanism to enable a given
client node to locate one or several specific nodes involved in the same
communication. However, there is no protocol ready to fulfill this service at
the network layer. Every protocol usually implements its own solution. In
particular, multicast protocols often use a search technique called expanding
ring search. This me... hiện toàn bộ
#Multicast protocols #Multicast algorithms #Broadcasting #Web and internet services #Bandwidth #Computer network reliability #Telecommunication network reliability #Data communication #Network servers #Data structures
A new preemption policy for DiffServ-aware traffic engineering to minimize rerouting Tập 2 - Trang 695-704 vol.2
J.C. de Oliveira, C. Scoglio, I.F. Akyildiz, G. Uhl
In this paper, a new preemption policy is proposed and complemented with an
adaptive scheme that aims to minimize rerouting. The preemption policy combines
the three main optimization criteria: number of LSP to be preempted, priority of
LSP to be preempted, and amount of bandwidth to be preempted. The preemption
policy is complemented by an adaptive scheme that selects LSP with lower
priority and ... hiện toàn bộ
#Telecommunication traffic #Multiprotocol label switching #Bandwidth #Packet switching #Maintenance engineering #Aggregates #Electronic mail #Communication networks #Availability #Load management
Optimal proxy cache allocation for efficient streaming media distribution Tập 3 - Trang 1726-1735 vol.3
Bing Wang, S. Sen, M. Adler, D. Towsley
In this paper, we address the problem of efficiently streaming a set of
heterogeneous videos from a remote server through a proxy to multiple
asynchronous clients so that they can experience playback with low startup
delays. We develop a technique to analytically determine the optimal proxy
prefix cache allocation to the videos that minimizes the aggregate network
bandwidth cost. We integrate prox... hiện toàn bộ
#Streaming media #Videos #Unicast #Network servers #Delay #Aggregates #Bandwidth #Cost function #Merging #Availability
Using the small-world model to improve Freenet performance Tập 3 - Trang 1228-1237 vol.3
Hui Zhang, A. Goel, R. Govindan
Efficient data retrieval in a peer-to-peer system like Freenet is a challenging
problem. We study the impact of cache replacement policy on the performance of
Freenet. We find that, with Freenet's LRU (least recently used) cache
replacement, there is a steep reduction in the hit ratio with increasing load.
Based on intuition from the small-world models and the recent theoretical
results by Kleinbe... hiện toàn bộ
#Peer to peer computing #Routing #IP networks #Computer science #Information science #Contracts #Internet #Information retrieval #Collaboration #Distributed control
Probabilistic location and routing Tập 3 - Trang 1248-1257 vol.3
S.C. Rhea, J. Kubiatowicz
We propose probabilistic location to enhance the performance of existing
peer-to-peer location mechanisms in the case where a replica for the queried
data item exists close to the query source. We introduce the attenuated Bloom
filter, a lossy distributed index data structure. We describe how to use these
data structures for document location and how to maintain them despite document
motion. We in... hiện toàn bộ
#Routing #Network servers #Filters #Availability #Peer to peer computing #Data structures #Bandwidth #Proposals #Scalability #Query processing
Packet scale rate guarantee for non-FIFO nodes Tập 1 - Trang 84-93 vol.1
J.-Y. Le Boudec, A. Charny
Packet scale rate guarantee (PSRG) is a generic node model which underlies the
definition of expedited forwarding (EF) proposed in the context of Internet
differentiated services (DiffServ). For the case of FIFO nodes, PSRG is
equivalent to the well-understood concept of adaptive service curve. However, in
practice, many devices do not necessarily preserve the FIFO property, and
therefore known FI... hiện toàn bộ
#Delay #Aggregates #Context-aware services #Diffserv networks #Global Positioning System #Switches #Context modeling #Web and internet services #Algebra #Calculus
An analytical framework for performance comparison of bandwidth reservation schemes in WDM ring Tập 1 - Trang 41-47 vol.1
J. Cai, A. Fumagalli
A number of bandwidth reservation schemes have been proposed for multi-channel
rings, generally classified as centralized and distributed. Besides simulation
results, the existing analytical models address only the blocking probability
and achievable throughput of such schemes. However, in determining the
properties and advantages of each reservation scheme (especially the LightRing,
a scheme prev... hiện toàn bộ
#Performance analysis #Bandwidth #Wavelength division multiplexing #Throughput #Delay #Analytical models #Optical fiber networks #Contracts #Centralized control #SONET
How to market-manage a QoS network Tập 1 - Trang 284-293 vol.1 - 2002
J. Altmann, H. Daanen, H. Oliver, A.S.-B. Suarez
This paper describes a control mechanism for a future Internet. It is an
economic mechanism that enables users to choose different pairs of price/QoS
priority levels for network services at the user time scale. The user time scale
means that prices vary at a rate suitable for human beings to respond to those
price changes. The changes might happen on an hourly, daily, or weekly basis. We
believe t... hiện toàn bộ
#Pricing #Quality of service #IP networks #Game theory #Web and internet services #Costs #Queueing analysis #Hardware #Software architecture #Laboratories