multi radio wireless ad hoc networks
WIRELESS AD-HOC NETWORKS docx
... Aloha multi- hop packet radio network with capture IEEE Trans Comm., 32:684–694, 1984 22 Wireless Ad- Hoc Networks 20 Mobile Ad- Hoc Networks [10] C Bordenave, S Foss, and V Shneer A random multiple ... receiving path We adopt multithreading and each path is controlled by a thread The design of the two paths is shown in Fig and outlined below 32 Wireless Ad- Hoc Networks 10 Mobile Ad- Hoc Networks Frame ... properly cited 24 Wireless Ad- Hoc Networks Mobile Ad- Hoc Networks PCF in reality We focus our discussion on DCF in the book chapter, which supports both infrastructure mode and ad hoc network mode,...
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security for wireless ad hoc networks
... SECURITY FOR WIRELESS AD HOC NETWORKS Farooq Anjum and Petros Mouchtaris SECURITY FOR WIRELESS AD HOC NETWORKS SECURITY FOR WIRELESS AD HOC NETWORKS Farooq Anjum and Petros ... wireless ad hoc networks To our knowledge, this book is the first book that focuses exclusively on the topic of security for wireless ad hoc networks The topic of security in wireless ad hoc networks ... 1.2 1.3 Definition of Wireless Ad Hoc Networks Applications of Wireless Ad Hoc Networks Threats, Attacks, and Vulnerabilities 1.3.1 Threats 1.3.2 Vulnerabilities in Ad Hoc Networks 1.3.3 Attacks...
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Báo cáo hóa học: " A survey of performance enhancement of transmission control protocol (TCP) in wireless ad hoc networks" pptx
... control in ad hoc wireless, networks Ad hoc Netw 4, 687–708 (2006) doi:10.1016/j.adhoc.2005.08.001 37 E Hamadani, V Rakocevic, A cross layer solution to address TCP, intra-flow performance degradation ... TCP on wireless ad hoc networks, those readers who are interested in single-hop wireless networks are referred to [17] The readers interested in the surveys of TCP enhancement in wireless networks ... based ad hoc networks Ad hoc Netw 1, 107–123 (2003) doi:10.1016/S15708705(03)00015-5 A Gupta, I Wormsbecker, C Williamson, Experimental evaluation of TCP performance in multi- hop wireless Ad hoc networks, ...
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Báo cáo hóa học: " Coherence time-based cooperative MAC protocol 1 for wireless ad hoc networks" doc
... mentioning when ad hoc network operates under heavy load and fast fading conditions: (1) A particular relay may not be reachable due to fading condition or out of coverage range, and (2) multiple relays ... protocol, multiple relays contend and respond during RR frame If each relay broadcasts its address (to the source node and the destination node), then it will lead to extensive control overhead transmission ... article as: Khalid et al.: Coherence time-based cooperative MAC protocol for wireless ad hoc networks EURASIP Journal on Wireless Communications and Networking 2011 2011:3 Submit your manuscript...
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Báo cáo hóa học: "Research Article OMNeT++-Based Cross-Layer Simulator for Content Transmission over Wireless Ad Hoc Networks" pot
... RcmModule RadioChannelManager ∗ rcm; RadioChannelManager PathLoss ∗ pl; ReceiverNoise ∗ rn; FastFading ∗ ff; SlowFading ∗ sf; FastFading double getFastFading() { return 1; } double getFastFading(FastFadingInfo ... return 1; } SlowFading FastFadingInfo double getSlowFading() { return 1; } double getSlowFading(SlowFadingInfo ∗ sfi) { return 1; } GroundBasedShadowing SlowFadingInfo Figure 5: Radio channel manager ... BytesMsg FEC Modem DL PDU REQ Ampli Radio Rx Physical layer SlotControlMsg → Slot → · · · RadioMsgBB [ComplexSignal]→ · · · −{ChannelControlInfo} Radio channel Figure 6: Radio access sequence diagram...
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Báo cáo hóa học: " Research Article On Wireless Ad Hoc Networks with Directional Antennas: Efficient Collision and Deafness Avoidance Mechanisms" ppt
... MAC schemes have been proposed for wireless ad hoc networks with directional antennas In principle, most of the proposed MAC protocols [11, 20–30] for ad hoc networks with directional antennas ... exploitation of directional antennas in ad- hoc wireless networks, ” in Proceedings of the 4th ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc ’03), pp 98–107, Annapolis, ... broad examination of many factors that affect network performance in wireless ad hoc networks with directional antennas, such as channel access, link power control, neighbor discovery, and multihop...
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Báo cáo hóa học: "Research Article Intelligent Stale-Frame Discards for Real-Time Video Streaming over Wireless Ad Hoc Networks" ppt
... scheme for jitter-tolerant video streaming over a multi- hop wireless ad hoc network A video packet temporarily buffered at IN on a wireless ad hoc network may exceed its end-to-end jitter constraint ... hoc networks, ” IEEE Transactions on Multimedia, vol 8, no 2, pp 356–369, 2006 [4] S Mao, S Lin, S S Panwar, Y Wang, and E Celebi, “Video transport over ad hoc networks: multistream coding with multipath ... Journal on Wireless Communications and Networking that is why RTP provides neither ACK nor NACK Also, how to accurately estimate RTT in a multi- hop wireless ad hoc network was not addressed in...
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Báo cáo hóa học: " Research Article On the Throughput Capacity of Large Wireless Ad Hoc Networks Confined to a Region of Fixed Area" pptx
... throughput of ad hoc networks, ” IEEE Transactions on Communications, vol 52, no 11, pp 1957–1968, 2004 [5] N Bansal and Z Liu, “Capacity, delay and mobility in wireless ad- hoc networks, ” in Proceedings ... 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 networks, ” ... medium-range wireless communication,” International Journal of Technology, Second Quarter, vol 5, no 2, 2001 [14] A Agarwal and P R Kumar, “Capacity bounds for ad hoc and hybrid wireless networks, ”...
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Báo cáo hóa học: " Research Article QoS-Aware Maximally Disjoint Routing in Power-Controlled Multihop CDMA Wireless Ad Hoc Networks" pdf
... for wireless ad hoc networks, ” in Proceedings of the 4th ACM International Symposium on Mobile Ad Hoc Networking & Computing (MobiHoc ’03), pp 153–164, Annapolis, Md, USA, June 2003 [2] V Kawadia ... Mobile Ad Hoc Networks (DSR),” Internet Draft, http://ietf.org/internet-drafts/draft-ietf-manet-dsr-10 txt [8] A Srinivas and E Modiano, “Minimum energy disjoint path routing in wireless ad- hoc networks, ” ... in wireless ad- hoc networks, ” Mobile Networks and Applications, vol 8, no 5, pp 517–533, 2003 [15] R L Cruz and A R Santhanam, “Optimal routing, link scheduling and power control in multi- hop wireless...
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Báo cáo hóa học: " On the Geometrical Characteristics of Three-Dimensional Wireless Ad Hoc Networks and Their Applications" pptx
... topological status of the wireless ad hoc network To a certain extent, the node locations and their corresponding degrees would affect the configuration of the wireless ad hoc network and even the ... network However, in the case of wireless ad hoc networks, it is extremely difficult to formulate the max-flow capacity as a simple expression due to the dependence among the wireless links as men- Figure ... covering radius are relatively large In other words, there exists a linear relationship between the mean value of the max-flow and the node number of a wireless ad hoc network when the covering radius...
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Báo cáo hóa học: " Improving TCP Performance over Wireless Ad Hoc Networks with Busy Tone Assisted Scheme" pdf
... frozen Therefore, how to provide reliable broadcast in wireless ad hoc networks is critical 2.2 False link failure Link failure in wireless ad hoc networks may be due to node mobility, power attenuation, ... problem in 802.11-based wireless ad hoc networks was first reported in [1], and it was further investigated in [2] The TCP unfairness problem in multihop wireless ad hoc networks was reported in ... reliable broadcast in wireless ad hoc networks due to the high bit error rate, wireless medium contention, and so forth In the IEEE 802.11 standard, since no RTS/CTS is devised for broadcast frames,...
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Báo cáo hóa học: " Research Article Capacity of Wireless Ad Hoc Networks with Opportunistic Collaborative Communications" pptx
... “The capacity of wireless networks, ” IEEE Transactions on Information Theory, vol 46, no 2, pp 388–404, 2000 [2] S Toumpis and A J Goldsmith, “Capacity regions for wireless ad hoc networks, ” IEEE ... in wireless multihop ad hoc networks to reach far distances,” IEEE Transactions on Signal Processing, vol 51, no 8, pp 2082–2092, 2003 [8] A Stefanov and E Erkip, “Cooperative coding for wireless ... 3062–3080, 2004 [4] M Qin and R S Blum, “Capacity of wireless ad hoc networks with cooperative diversity: a warning on the interaction of relaying and multi- hop routing,” in Proceedings of IEEE International...
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Báo cáo hóa học: " Research Article Capacity of Wireless Ad Hoc Networks with Opportunistic Collaborative Communications" pdf
... “The capacity of wireless networks, ” IEEE Transactions on Information Theory, vol 46, no 2, pp 388–404, 2000 [2] S Toumpis and A J Goldsmith, “Capacity regions for wireless ad hoc networks, ” IEEE ... in wireless multihop ad hoc networks to reach far distances,” IEEE Transactions on Signal Processing, vol 51, no 8, pp 2082–2092, 2003 [8] A Stefanov and E Erkip, “Cooperative coding for wireless ... 3062–3080, 2004 [4] M Qin and R S Blum, “Capacity of wireless ad hoc networks with cooperative diversity: a warning on the interaction of relaying and multi- hop routing,” in Proceedings of IEEE International...
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Báo cáo hóa học: " Research Article Tree-Based Distributed Multicast Algorithms for Directional Communications and Lifetime Optimization in Wireless Ad Hoc Networks" pptx
... energy efficient multicast tree In this paper, we explore the energy conservation offered by directional communications for providing longlived broadcasting/multicasting in wireless ad hoc networks Our ... is on establishing source-initiated multicast trees to maximize network operating time in energy-limited wireless ad hoc networks with single or multiple multicast sessions Similar to previous ... December 2003 [6] M X Cheng, J Sun, M Min, and D.-Z Du, “Energy-efficient broadcast and multicast routing in ad hoc wireless networks, ” in Proceedings of the 22nd IEEE International Performance, Computing...
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Báo cáo hóa học: " Cross-Layer QoS Control for Video Communications over Wireless Ad Hoc Networks" docx
... transmission over wireless IP networks, ” under revision for IEEE Trans Multimedia, 2005 [6] E Setton, X Zhu, and B Girod, “Congestion-optimized multi- path streaming of video over ad- hoc wireless networks, ” ... used in assessing the performance of wireless ad hoc networks For example, in [4], a “protocol model” is used to assess the asymptotic capacity of an ad hoc wireless network operating in a limited ... over wireless ad hoc network are the following (1) FEC coding, especially using RS codes, is quite effective in dealing with bursty packet losses commonly encountered on wireless ad hoc networks...
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Topology Control in Wireless Ad Hoc Networks phần 1 pdf
... 5th ACM MobiHoc – Tokyo, May 24, 2004 Tutorial outline Introduction – – – Stationary networks – – – Motivation: the need for Topology Control (TC) in ad hoc networks An ad hoc network model ... energy and capacity are limited resources in ad hoc networks In case of Wireless Sensor Networks (WSN), energy consumption is especially critical The ad hoc network designer should strive for reducing ... several hops Istituto di Inform atica e Telem atica Introduction: 2/7 5th ACM MobiHoc – Tokyo, May 24, 2004 An ad hoc network model The power pi required by node i to transmit data to node j must...
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Topology Control in Wireless Ad Hoc Networks phần 2 ppsx
... CTR: 3/12 5th ACM MobiHoc – Tokyo, May 24, 2004 CTR: probabilistic approaches In many realistic scenarios, node positions are not known in advance (for instance, sensors spread from a moving vehicle) ... dense networks However, similar results have been proved also for the case of sparse networks In this case, R=[0,l ]2, and connectivity is investigated for l → ∞ In case of sparse networks, ... for n → ∞ Istituto di Inform atica e Telem atica the CTR: 7/12 5th ACM MobiHoc – Tokyo, May 24, 2004 The CTR for sparse networks The results presented so far refer to the case where the deployment...
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Topology Control in Wireless Ad Hoc Networks phần 3 potx
... MobiHoc – Tokyo, May 24, 2004 The symmetric RA problem The implementation of unidirectional wireless links is “expensive” Are unidirectional links really useful? – Recent experimental [MarinaDas02] ... WSRA problem remains NP-hard for two and threedimensional networks [Blough et al.02a] In [Blough et al.02a], it is proved that the additional energy cost necessary to obtain a connected backbone ... that we communicate using the routing graph G’ instead of G Istituto di Inform atica e Telem atica Energy-efficient communication: 2/7 5th ACM MobiHoc – Tokyo, May 24, 2004 Power spanners (2) Ideal...
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Topology Control in Wireless Ad Hoc Networks phần 4 pot
... 5th ACM MobiHoc – Tokyo, May 24, 2004 Energy-efficient broadcast Other problem considered in the literature: determination of energyefficient broadcast graphs Similarly to ... communication: 6/7 5th ACM MobiHoc – Tokyo, May 24, 2004 Energy-efficient broadcast (2) [Cagali et al.02] and [Liang02]: the task of finding the energy-optimal broadcast tree rooted at an arbitrary ... traded off with the cost incurred for making the information available to the nodes With cost, we mean here either additional HW required on the nodes (e.g., GPS receiver), or message overhead,...
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Topology Control in Wireless Ad Hoc Networks phần 5 ppsx
... Telem atica TC protocols: 12/12 5th ACM MobiHoc – Tokyo, May 24, 2004 Mobile networks Which is the impact of mobility on TC? – Increased message overhead: contrary to the stationary case, the ... MobiHoc – Tokyo, May 24, 2004 Mobility models Impact of mobility on TC depends on the mobility pattern Mobility models: – Random waypoint model: most widely used mobility model in the ad hoc ... generated by RWP mobility is not uniform should be carefully considered when simulating mobile ad hoc networks Istituto di Inform atica e Telem atica Mobility: 5/10 ...
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