radio resource management for wireless networks ppt

... on Wireless Communications and NetworkingVolume 2011, Article ID 921623, 15 pages doi:10.1155/2011/921623 Research Article Interference-Aware Radio Resource Management for Local Area Wireless Networks ... and reliable high data-rate local area wireless access In this paper, we propose an interference-aware radio resource management scheme where receivers inform about their throughput, interference, ... efficient wireless access in challenging interference scenarios, for example, multiple networks deployed in the same geographical area and sharing a common band 1 Introduction As the demand for higher

Ngày tải lên: 21/06/2014, 05:20

... ID 70903, Pages 1 12DOI 10.1155/WCN/2006/70903 Effective Radio Resource Management for Multimedia Broadcast/Multicast Services in UMTS Networks Nuno Souto, 1, 2 Armando Soares, 2 Patricia Eus ... the key issues in multicast transmission is the management of radio resources The main requirement is to make an efficient overall usage of the radio resources This makes the use of a common channel ... incorpo-rating 16-QAM non-uniform constellations In this scheme there are 2 parallel processing chains, one for the basic infor-mation stream and the other for the enhancement informa-tion 4 MACRODIVERSITY

Ngày tải lên: 22/06/2014, 22:20

... effectively improve radio resource utility and system performance of the whole network Keywords: radio resource management, public femtocell networks, resource utility, system performance 1 Introduction ... long-term resource management, which is to allocate spectrum resource between macrocell and femtocell networks; (2) medium-term resource management, which is to allocate radio resources to each ... enough resources Trang 33 Radio resource management schemes3.1 Long-term resource management: spectrum allocation between macrocell and public femtocells Spectrum is one of the most important resources

Ngày tải lên: 20/06/2014, 22:20

... Trang 1RESOURCE MANAGEMENT FOR TARGET TRACKING IN WIRELESS SENSORNETWORKS HAN MINGDING NATIONAL UNIVERSITY OF SINGAPORE 2010 Trang 2RESOURCE MANAGEMENT FOR TARGET TRACKING IN WIRELESS SENSOR NETWORKSHAN ... to other data-centric application domains in wireless sensor networks Trang 111.1 Resource Management in Wireless SensorNetworks Wireless Sensor Networks (WSNs) consist of large numbers of low-power ... 1Introduction This thesis addresses resource management approaches for target tracking appli-cations in wireless sensor networks, by considering application-level performance such as tracking accuracy,

Ngày tải lên: 16/10/2015, 11:57

... requirement for wireless sensor networks while security must also be ensured for mission-critical applications In this paper, we present an energy-efficient distributed deterministic key management ... and is thus more suitable for resource-constrained wireless sensor networks 7 Conclusions In this paper, we proposed an energy-efficient distributed deterministic key management scheme (EDDK) in ... master key establishment for wireless sensor networks,” in Proceedings of the 1st International Conference on Security and Privacy for Emerging Areas in Communications Networks (SecureComm ’05),

Ngày tải lên: 21/06/2014, 11:20

... bits are motion information for the “Students” stream while this figure is 11.3% for the “Fore-man” stream Thus, the “Students” stream contains much more texture information than “Foreman.” This ... of 33.24 dB for the “Stu-dents” stream (i.e., around 6.5 dB better than the “No ER” performance), and 28.45 dB for the “Foreman” stream (i.e., around 3 dB better than the “No ER” performance) The ... transcoding units to be deployed in the networks Video transcoding is the process of converting the for-mat of an input coded video content into another forfor-mat [19–21] It is primarily used to

Ngày tải lên: 22/06/2014, 20:20

... problem for non- homogenous wireless networks. 3. SYSTEM MODEL We adopt the widely used transmission power model for ra- dio networks, p ij = d α i, j ,wherep ij is the transmission power needed for ... directly applied to non-homogenous networks. In this paper, we study the problem of QoS topology con- trol for non-homogenous ad hoc wireless networks. Given a set of wireless nodes in a plane where ... the traffic demands are splittable. For the former case, the problem is formulated as an integer linear programming problem. For the latter case, the problem is formulated as a mixed integer programming

Ngày tải lên: 22/06/2014, 22:20

... [6] For the downlink, the power allo-cation problem for multiservice DS-CDMA wireless net-works is studied in [14], where the downlink power con-trol problem for multicell wireless networks is formulated ... various services The optimization can be performed either in the network level or in the cell level Conventional methods for resource allocation in wireless networks are based on the characteriza-tion ... Due to the limited availabil-ity of radio resources, designing a resource control mecha-nism to utilize the network resources efficiently is a crucial task for the next generation cellular communication

Ngày tải lên: 22/06/2014, 22:20

... Castrothe system for lack of available resources [48] Cross-layering is aimed to optimize bandwidth allocation, and to provide for low CDP for reliable handovers and acceptable CBP for new calls, ... Information for Packet-Switched Data Networks”, IEEE Communications Magazine, Vol 42, No 3, pp S15-S20, March 2004 [7] P Lettieri, M B Srivastava, “Adaptive Frame Length Control for Improving Wireless ... the End-to-End Performance of Reliable Flows over Wireless Links”, Wireless Networks, Vol 8, No 2/3, pp 289-299, March 2002 [9] H Boche, M Wiczanowski, “Optimal Scheduling for High Speed Uplink

Ngày tải lên: 05/07/2014, 19:20

... for Internet traffic engineering because it supports explicit LSPs, which allow constraint-based routing to be implemented efficiently in IP networks 8.3 Resource management for IP QoS Resource management ... terrestrial wireless networks and satellite networks sup-porting dynamic bandwidth allocation mechanisms Firstly, for a BoD-based satellite architecture, resource has to be requested by the STs before ... characteristics of satellite networks, the realization of such framework is very different from those solutions provided for terrestrial and wireless systems For terrestrial wired networks, the scheduler

Ngày tải lên: 05/07/2014, 19:20

... proactive management simply consists of setting up a new VLAN with a new spanning tree before the handover is performed, thus forcing a VLAN handover before the physical handover Note that, as for ... design, since we aim at optimizing the resource management in the MAC layer to support IP QoS and robustness The optimization of resource management is performed by joining the effectiveness of ... the whole block composed of information and redundancy packets (for instance block formed by packets D to 5), must be received before being able to extract the information packets This determines

Ngày tải lên: 05/07/2014, 19:20

... 2EngineeringTrang 3More information about this series at http://www.springer.com/series/10059Trang 4Haibo Zhou • Xuemin (Sherman) ShenResource Management for Energy and Spectrum Harvesting Sensor Networks 123 ... Spectrum Harvesting Sensor Networks 17 2.3 Joint Energy and Spectrum Harvesting in Wireless Networks 19 2.3.1 Green Energy-Powered SH Networks 19 2.3.2 RF-Powered SH Networks 20 2.4 Conclusion ... protocols in wireless sensor networks: a survey IEEE Commun Surv Tutorials 15(2), 551–591 (2013) 3 A Ahmad, S Ahmad, M Rehmani, N Ul Hassan, A survey on radio resource allocation in cognitive radio

Ngày tải lên: 08/01/2020, 11:32

... 2EngineeringTrang 3More information about this series at http://www.springer.com/series/10059Trang 4Haibo Zhou • Xuemin (Sherman) ShenResource Management for Energy and Spectrum Harvesting Sensor Networks 123 ... Spectrum Harvesting Sensor Networks 17 2.3 Joint Energy and Spectrum Harvesting in Wireless Networks 19 2.3.1 Green Energy-Powered SH Networks 19 2.3.2 RF-Powered SH Networks 20 2.4 Conclusion ... protocols in wireless sensor networks: a survey IEEE Commun Surv Tutorials 15(2), 551–591 (2013) 3 A Ahmad, S Ahmad, M Rehmani, N Ul Hassan, A survey on radio resource allocation in cognitive radio

Ngày tải lên: 09/01/2020, 08:35

... Modelling of virtual radio resource management The management hierarchy of virtual radio resources is also shown in Figure 2, consisting of VRRM on the top of the usual radio resource management entities ... Keywords: Virtualisation of radio resources; Virtual radio resource management; Radio access networks; Network Function Virtualisation 1 Introduction Future mobile networks will have to face the ... than former ones Virtual network operators (VNOs) ask for wireless connectivity in the form of capacity per service, hence, not dealing with physical radio resources at all A model for the management

Ngày tải lên: 02/11/2022, 08:53

... lists legacy IEEE 802.11 WLAN online resources Trang 122 Overview of IEEE 802.11 Wireless Local Area Networks Wireless local area networks (WLAN) are groups of wireless networking nodes within a ... Information Security Management Act (FISMA) of 2002, Public Law 107-347 NIST is responsible for developing standards and guidelines, including minimum requirements, for providing adequate information ... effective range of attack on the wireless networks beyond the standard range.) Another consideration in threats against wireless networks is that, in many cases, a wireless network is logically

Ngày tải lên: 14/02/2014, 08:20

... thought paper will serve as a basis for introspection about current approaches to risk management and be a catalyst for management to strengthen risk management for the purpose of enhancing the ... critical starting point for risk management is for management and the board to develop a shared understanding of the organization’s risk management philosophy and overall appetite for risk as they establish ... and management to turn to COSO’s Enterprise Risk Management— Integrated Framework for in-depth discussion of core components of enterprise risk management. COSO, 2009 Trang 4Opportunities for

Ngày tải lên: 21/02/2014, 11:20

... cooperation for wireless networks Kaibin Zhang1*, Liuguo Yin2and Jianhua Lu1 Abstract A novel feedback-based adaptive network coded cooperation (FANCC) scheme is proposed for wireless networks that ... Frame error ratio (FER) performance Index Terms–cooperative wireless network, network coding, fountain codes, distributed coding I Introduction The random fading in wireless networks has posed a fundamental ... and the destination Utilizing each source-destination channel state information obtained at the destination for resource management, it is evident to produce additional cooperative benefits Furthermore,

Ngày tải lên: 20/06/2014, 22:20

... in a wireless network,” IEEE Transactions on Information Theory, vol 52, no 6, pp 2749–2755, 2006. [10] T ElBatt and A Ephremides, “Joint scheduling and power control for wireless ad hoc networks,” ... “Joint resource allocation and admission control in wireless mesh networks,” in Proceedings of the 7th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks ... techniques by reinterpreting case of wireless CDMA networks the interference coefficient g i j(t) would model the residual interference at the output case wireless SDMA networks where nodes are equipped

Ngày tải lên: 21/06/2014, 11:20

... other in forwarding informa-tion from source to destinainforma-tion, the total value of the net-work is much higher than the sum of the communication span of each node For such spontaneous networks ... mobile ad hoc networks [29–32] INSIGNA [29], one of the best known, uses a soft state resource manage-ment mechanism to enhance network usage Packets trans-port an extra field for QoS information, ... congested nodes send messages informing intermedi-ate nodes to wait for a random amount of time before trying to re-establish connectivity Dynamic regulation is also per-formed to deal with mobility

Ngày tải lên: 22/06/2014, 19:20

... “physical” and “ana-lytical” models for characterization purposes 1.3.1 Double-directional radio propagation In wireless communications, the mechanisms of radio prop-agation are subsumed into ... by Rodney A Kennedy This paper provides an overview of the state-of-the-art radio propagation and channel models for wireless multiple-input multiple-output (MIMO) systems We distinguish between ... technology has made its way from purely theo-retical performance analyses that promised enormous ca-pacity gains [1,2] to actual products for the wireless mar-ket (e.g., [3 6]) However, numerous MIMO

Ngày tải lên: 22/06/2014, 22:20