capacity of ad hoc wireless networks pdf

... K. Madsen, F. H. P. Fitzek, and R. Prasad, “Impact of different mobility models on connectivity probability of a wireless ad hoc network,” in Proceedings of the International Workshop on Wireless ... pp. 173–219, Addison-Wesley, Reading, Mass, USA, 2001. [2]D.B.Johnson,D.A.Maltz,andJ.Broch,“DSR:the dynamic source routing protocol for multi-hop wireless ad hoc networks, ” in Ad Hoc Networking, ... Baroudi, “Bypass-AODV: improving performance of ad hoc on-demand distance vector (AODV) routing protocol in wireless ad hoc networks, ” in Proceedings of the International Conference on Ambient...

Ngày tải lên: 21/06/2014, 11:20

... referred to as mobile ad hoc networks (MANETs) [33] or as infrastructure-less wireless networks. 1.2 Mobile Ad Hoc Networks A Mobile Ad hoc NETwork (MANET) is a system of wireless mobile ... and Local Ad Hoc Wireless Networks M arco Conti 2 M ulticasting Techniques in Mobile Ad Hoc Networks X iao Chen and Jie Wu 3 Qualit y of Service in Mobile Ad Hoc Networks ... ower-Conservative Designs in Ad Hoc Wireless Networks Y u-Chee Tseng and Ting-Yu Lin 5 P erformance Analysis of Wireless Ad Hoc Networks A nurag Kumar and Aditya Karnik 6 ...

Ngày tải lên: 03/06/2014, 01:08

... an ad hoc network, as we shall see below. I address the general issue of routing in mobile ad hoc networks separately in the next section. The shared wireless environment of mobile ad hoc networks ... and quality of service in ad hoc wireless networks. Starting with a review of the basic principles of ad hoc wireless networking, coverage progresses to the vulnerabilities these networks face ... security and are often used in security-related discussions, in the context of computer networks. The basic security needs of wireless ad hoc networks are more or less the same as those of wired networks. ...

Ngày tải lên: 25/03/2014, 12:07

Ngày tải lên: 22/06/2014, 19:20

... networks (WLANs). Although often used in practical implementations of mobile ad hoc networks, IEEE 802.11 presents several drawbacks in the context of ad hoc networks, one of them being its poor throughput ... the effective capacity of flow 2 ideally is upper bounded by 1/3 of its maximum capacity. But the capacity of each outer flow can grow up to 2/3 of its maximum capacity. In the case of IEEE 802.11, ... “The capacity of wireless networks, ” IEEE Transactions on Information Theory,vol.46,no.2,pp. 388–404, 2000. [2] M. Grossglauser and D. N. C. Tse, “Mobility increases the capacity of ad hoc wireless...

Ngày tải lên: 21/06/2014, 22:20

Ngày tải lên: 22/06/2014, 22:20

... for Wireless Ad Hoc Sensor Networks and Performance Evaluation Yang Qin, Shenhao Liu, and Jinlong Wang School of Computer Science and Technology, Harbin Institute of Technology Shenzhen Graduate ... routing protocols for ad hoc topology wireless sensor networks. Most of the above protocols use broadcast to do routing, which will cause high energy consumption and high control overhead. Recently, ... and J. C. Chen, “A sur ve y of ene rg y e fficient network protocols for wireless networks, ” Wireless Networks, vol. 7, no. 4, pp. 343–358, 2001. EURASIP Journal on Wireless Communications and...

Ngày tải lên: 21/06/2014, 17:20

... static sensor networks. In this paper, we study data-centric storage in mobile wireless networks. To detect mobility of wireless nodes, [11] used received signal strength in wireless LAN to detect wireless ... Measurement of Accuracy of Neighborhood Prediction. One challenge of data-centric mobile wireless networks is the efficiency of data retrieval, which highly depends on the accuracy of neighborhood ... instance, a wireless node, playing the role of a collector node, can collect data of more than one type, but usually it only stores one type of data and transfers the rest of data of other data...

Ngày tải lên: 21/06/2014, 18:20

Ngày tải lên: 22/06/2014, 22:20

Ngày tải lên: 23/06/2014, 00:20

... cognitive adaptive CoD media delivery over composite wireless networks. This type of application usage scenario has special characteristics in that it can adapt itself to cope with the existence of ... based on a trade-off between the potential benefit of using an alternative channel versus the chan- nel switching efficiency (i.e. overhead). The optimal Dual radio AP R 1 R 2 U 1 U 2 Load - U 3 lPVR 1 lPVR 2 U 1 -R 1 U 1 -U 2 U 2 -R 1 U 2 -R 2 N 1 ... Facilitating advanced radio resource management using a common information model, in The 1st Workshop of COST Action IC0902 Cognitive Radio and Networking for Cooperative Coexistence of Heterogeneous Wireless...

Ngày tải lên: 20/06/2014, 22:20

... that the aggregate input rate of ith location R i should be compliant with per-location por- tion of link capacity even when wireless link errors degrade wireless link capacity. But, this is another research, ... per-location load and net- work-wide load and then design the proposed frame- work of provisioning service differentiation based on per-location target load. Per-location load: The portion of link capacity allotted ... framework of QoS provisioning in IEEE 802.11-based Hot Spot networks. In the TaLE-based fra- mework, the AP keeps track of current per-location load diverged from a given per-location share of link capacity and...

Ngày tải lên: 20/06/2014, 22:20

... of packets to various applica- tions. In wireless networks, packets are transmitting with the presence of wireless links. When TCP operates in wireless networks, t he end-to-end performance of TCP ... thereby increase the perfor- mance of TCP over wireless networks. List of Abbreviations ACL: accuracy of congestion loss; ARL: accuracy of random loss; APR: accuracy of packet reordering; BS: buffer ... improve the performance of TCP over wireless networks. To address this issue, we propose a unified solution called TCP NCE for improving the performance of TCP over wireless networks by reducing...

Ngày tải lên: 21/06/2014, 02:20

... effective transport capacity of ad hoc dispersed spectrum cognitive radio networks is derived, and the effects of 3D node distribution on the effective transport capacity of ad hoc dispersed spectrum ... sensor networks, ” Ad Hoc Networks, vol.7,no.4,pp. 778–790, 2009. [14] G. Ferrari, B. Baruffini, and O. Tonguz, “Spectral efficiency- connectivity tradeoff in ad hoc wireless network,” in Proceed- ings of ... study the effects of the 3D node distribution along with INI on the effective transport capacity of ad hoc dispersed spectrum cognitive radio networks. The effective transport capacity expressions...

Ngày tải lên: 21/06/2014, 05:20

... G. Ye, C. Liu, T. Saadawi, and M. Lee, Wireless aware SCTP for ad hoc networks, ” in Proceedings of the International Workshop on Heterogeneous Multi-Hop Wireless and Mobile Networks (MHWMN ’05), ... performance of the proposed scheme via simulation by using ns-2.29 and SCTP modules [17]. 5.1. Packet Loss Model for Wireless. Packet losses in wireless networks often result from a user moving out of ... as server overloading due to multiple connection and the HOL (Head -Of- Line) blocking that exists in TCP-based file transfer. These studies mainly focused on using SCTP instead of TCP to improve...

Ngày tải lên: 21/06/2014, 18:20

... Kotz, “On improving wireless broadcast reliability of sensor networks using erasure codes,” in Proceedings of the 2nd International Conference on Mobile Ad- hoc and Sensor Networks (MSN ’06), Hong ... the data payload of each frame is divided into four virtual fragments of 5 bytes each. For 802.11 evaluations, we use a data payload size of n data = 1000 bytes and header and ACK of n ack = n hdr = ... properly cited. 1. Introduction Many deployment scenarios of multihop wireless networks require high transmission reliability; for instance, wireless ad hoc and sensor networks are anticipated to be deployed in disaster...

Ngày tải lên: 21/06/2014, 22:20

... care, integrating low- power, wireless vital sign sensors, and PC-class systems. In addition, Zussman and Segall propose to construct an ad hoc network of wireless smart badges in order to acquire information ... evaluation of networks. The fluid mobility model [8–10]conceptualizestrafficflowofusers as the flow of a fluid, which models mobility in terms of the mean number of users crossing the boundary of a given area. ... interest of enhancing the QoS performance of DAWN. To measure the throughput of individual links, we ought to set the positions of RNs as exact Cartesian coordinates. In particular, instead of defining...

Ngày tải lên: 21/06/2014, 23:20

Ngày tải lên: 22/06/2014, 01:20

Ngày tải lên: 22/06/2014, 19:20