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
Towards simple, high-performance schedulers for high-aggregate bandwidth switches Tập 3 - Trang 1160-1169 vol.3
P. Giaccone, B. Prabhakar, D. Shah
High-aggregate bandwidth switches are those whose port count multiplied by the
operating line rate is very high; for example, a 30 port switch operating at 40
Gbps or a 1000 port switch operating at 1 Gbps. Designing high-performance
schedulers for such switches is challenging for the following reasons: (i) high
performance requires finding good matchings; (ii) good matchings take time to
find; (i... hiện toàn bộ
#Bandwidth #Switches #Packet switching #Scheduling algorithm #Bipartite graph #Fabrics #Throughput #Delay #Traffic control #Aggregates
Delay constrained energy efficient transmission strategies for wireless devices Tập 3 - Trang 1765-1772 vol.3
P. Nuggehalli, V. Srinivasan, R.R. Rao
In this paper, we address the problem of energy efficient packet scheduling in a
wireless environment. We consider a wireless transmitter which is limited by its
finite battery resource. Our objective is to design a transmission schedule that
maximizes battery lifetime subject to some delay constraints. To achieve this,
we exploit two previously unconnected ideas: (i) channel coding can be used to... hiện toàn bộ
#Delay #Energy efficiency #Batteries #Transmitters #Channel coding #Scheduling algorithm #Cellular networks #Yarn #CMOS technology #Protocols
Stability of a multicast tree Tập 2 - Trang 1099-1108 vol.2
P. Van Mieghem, M. Janic
Most of the currently deployed multicast protocols (e.g. DVMRP, PIM, MOSPF)
build one shortest path multicast tree per sender, the tree being rooted at the
sender's subnetwork. This paper examines the stability of such a tree,
specifically, how the number of links change as the number of multicast users in
a group changes. We make two modelling assumptions: (a) packets are delivered
along the shor... hiện toàn bộ
#Stability #Streaming media #Application software #Multicast protocols #Topology #Video sharing #Videoconference #Video compression #Routing protocols #Density functional theory
Impact of segments aggregation on TCP Reno flows in optical burst switching networks Tập 3 - Trang 1803-1812 vol.3
A. Detti, M. Listanti
We study the optical burst switching (OBS) paradigm for the support of the TCP
flows in an all optical network (AON). We analyze the TCP send rate, i.e. the
amount of data sent per time unit, taking into account of: (i) the burst
assembly mechanism, called burstification process; (ii) the burst loss events
inside the OBS network. The goals of the paper are to investigate the effect of
the variatio... hiện toàn bộ
#Image motion analysis #Intelligent networks #Optical burst switching #Optical packet switching #High speed optical techniques #Optical fiber networks #All-optical networks #Spine #Payloads #Wavelength division multiplexing
Performance of reliable transport protocol over IEEE 802.11 wireless LAN: analysis and enhancement Tập 2 - Trang 599-607 vol.2
Haitao Wu, Yong Peng, Keping Long, Shiduan Cheng, Jian Ma
IEEE 802.11 medium access control (MAC) is proposed to support asynchronous and
time bounded delivery of radio data packets in infrastructure and ad hoc
networks. The basis of the IEEE 802.11 WLAN MAC protocol is a distributed
coordination function (DCF), which is a carrier sense multiple access with
collision avoidance (CSMA/CA) with a binary slotted exponential back-off scheme.
Since IEEE 802.11... hiện toàn bộ
#Transport protocols #Wireless LAN #Performance analysis #Media Access Protocol #Access protocols #Predictive models #Ad hoc networks #Collision avoidance #Multiaccess communication #Wireless sensor networks
On multiple description streaming with content delivery networks Tập 3 - Trang 1736-1745 vol.3
J. Apostolopoulos, T. Wong, Wai-tian Tan, S. Wee
We propose a system that improves the performance of streaming media CDN by
exploiting the path diversity provided by existing CDN infrastructure. Path
diversity is provided by the different network paths that exist between a client
and its nearby edge servers; and multiple description (MD) coding is coupled
with this path diversity to provide resilience to losses. In our system, MD
coding is used... hiện toàn bộ
#Streaming media #Network servers #Delay #Network topology #Decoding #Laboratories #Scalability #Fault tolerant systems #Load management #Resilience
Detecting SYN flooding attacks Tập 3 - Trang 1530-1539
Haining Wang, Danlu Zhang, Kang G. Shin
We propose a simple and robust mechanism for detecting SYN flooding attacks.
Instead of monitoring the ongoing traffic at the front end (like firewall or
proxy) or a victim server itself, we detect the SYN flooding attacks at leaf
routers that connect end hosts to the Internet. The simplicity of our detection
mechanism lies in its statelessness and low computation overhead, which make the
detectio... hiện toàn bộ
#Floods #Web server #Network servers #Web and internet services #Computer crime #Robustness #Monitoring #Access protocols #Delay #IP networks
Effective location-guided tree construction algorithms for small group multicast in MANET Tập 3 - Trang 1180-1189 vol.3
K. Chen, K. Nahrstedt
Group communication has become increasingly important in mobile ad hoc networks
(MANET). Current multicast routing protocols in MANET have a large overhead due
to the dynamic network topology. To overcome this problem, there is a recent
shift towards stateless multicast in small groups. We introduce a small group
multicast scheme, based on packet encapsulation, which uses a novel packet
distributi... hiện toàn bộ
#Multicast algorithms #Mobile ad hoc networks #Bandwidth #Steiner trees #Cost function #Mobile communication #Multicast protocols #Routing protocols #Network topology #Encapsulation
On the scalability of ad hoc routing protocols Tập 3 - Trang 1688-1697 vol.3
C.A. Santivanez, B. McDonald, I. Stavrakakis, R. Ramanathan
A novel framework is presented for the study of scalability in ad hoc networks.
Using this framework, the first asymptotic analysis is provided with respect to
network size, mobility, and traffic for each fundamental class of ad hoc routing
algorithms. Protocols studied include the following: plain flooding (PF),
standard link state (SLS), dynamic source routing (DSR), hierarchical link state
(Hie... hiện toàn bộ
#Scalability #Routing protocols #Ad hoc networks #Telecommunication traffic #Algorithm design and analysis #Floods #Laser sintering #Traffic control #Mobile ad hoc networks #Analytical models