an ip qos architecture for 4g networks

... approach for QoS Fast MIP extension [3] and security (IPSec) have also been developed and integrated in the network The design principle for QoS architecture was to have a structure which allows for ... heterogeneous wireless-wired networks This architecture applies an “all-IP” paradigm, with embedded mobility of users The architecture allows for multiple types of access networks, and enables user roaming ... requests 3.1 Service and Network Management in Mobile Networks Our approach for 4G networks and to service provisioning is based on the separation of service and network management entities In

Ngày tải lên: 08/07/2014, 22:20

... system architecture and a world model database for an intelligent robot in a manufacturing workstation are described Each level of the control architecture performs real-time planning and sensory-interactive ... sophistica- tion and elegance of algorithms, the amount and quality of information and values, and the efficiency and reliability of the system architecture The amount of intelli- gence can grow through ... shape and the relative positions of feature boundaries Level 2—Primitive The primitive level plans paths for tools, manipulators, and inspection probes so as to minimize time and optimize performance

Ngày tải lên: 26/01/2014, 07:20

... can, therefore, be considered as an original contribution to the area of EDCA models and backoff misbehaviour 1 Introduction The IEEE 802.11 standard [1] for wireless local area networks (WLANs) ... The latest drivers, for example, [2], allow changing these parameters through the command line Even equipment vendors can make nonstandard modifications to increase the performance of their cards ... Service (QoS) for WLANs through traffic differentiation It defines new medium access parameters and, therefore, new opportunities to misbehave Misbehaviour in EDCA can occur by deliberately chang-ing

Ngày tải lên: 21/06/2014, 11:20

... to the SB and RR algorithms The window size plays an important role in the performance of the SB 5.1 User Performance Figure 4shows the CDF of the packets dropped per frame for low and high loading, ... requirements of the scheduler in 4G networks into the original scheme In such networks, the utilization of the resources and hence the performance of the network can be enhanced by making use of the ... provides enhanced performance in terms of queuing delay, packet dropping rate, and cell-edge user performance, while the total sector throughput remains comparable We further analyze and compare

Ngày tải lên: 21/06/2014, 23:20

... miry, and meanwhile, at least one of the two forward sectors is clean, the energy mower will move into a clean forward sector rather than DestSector When only one forward sector is clean, the ... as shown inFigure 2, and regards these points as candidates for the sojourn position In MIPS, we define a type of influence force between a quasi-hotspot and a candidate for the sojourn position ... strategy can only extend the network lifetime moderately; meanwhile, the performance of peripheral moving strategy was enhanced fast with the increase in the initial energy for each node and hit

Ngày tải lên: 22/06/2014, 19:20

... performed (i.e., is this the first, middle, or last element of a summation), which removes the need for any local FSM to control the pipeline 3.1 Gaussian distance pipe The Gaussian distance pipe ... the Gaussian dis-tance pipe to form the main pipeline structure for the AM block the result is a 20 stage pipeline capable of operating at over 140 MHz, and requiring no local FSM for managing ... subtracted from a constant and then scaled As shown in Figure6, the data necessary for the subtraction and scaling (K & W) can be interleaved into the data for the means and variances (M & V),

Ngày tải lên: 22/06/2014, 22:20

... 802.11 stan-dard and not to entirely redesign the stanstan-dard channel access mechanisms, we tried to find a flexible development platform providing an implementation of the legacy 802.11 standard ... routing, and trans-port information for congestion and network utilization pur-poses If the transport is aware of the links’ status, it can distinguish between congestion due to physical failures and ... backoff mechanism and the enhanced ones, that is, the AOB protocol and the AOB-CR protocol In all the experiments we use our NIC implementation both for the AOB-based solutions and for the standard

Ngày tải lên: 22/06/2014, 22:20

... Trang 1Cross-Layer QoS Control for Video Communicationsover Wireless Ad Hoc Networks Qi Qu, 1,2 Yong Pei, 3 James W Modestino, 1 Xusheng Tian, 1 and Bin Wang 3 1 Department of Electrical and ... the distance between nodes X iandX jin the domain andr is the effective commu-nication range of each node (ii) For every other nodeX kthat is simultaneously trans-mitting over the same channel, ... encodes/transmits video frames, we can obtain the information on the effective transmission rateRe ffective As discussed previously, performance variations due to changes of the maximum effective transmission

Ngày tải lên: 23/06/2014, 00:20

... Trang 1
2005 R Cristescu and S D Servetto An Optimal Medium Access Control with Partial Observations for Sensor Networks R ˘azvan Cristescu Center for the Mathematics of Information, California ... characterized by an invariant measure over all possible information states, and we construct that measure Our results can be specifically applied for designing efficient and stable algorithms for medium ... 1 INTRODUCTION 1.1 Multiple access in dynamic networks Communication in large networks has to be done over an inherently challenging multiple-access channel An impor-tant constraint is associated

Ngày tải lên: 23/06/2014, 00:20

... modeling organ-organ crosstalk As an underlying design principle organs were considered to be functionally composed of an epithelial surface, which determined organ integrity, and an endothelial/blood ... presents significant challenges for the translation of mechanistic research results from one organizational level to another (see Figures 1) The mirroring of these multiple levels in the organization ... modeling and computer simulation offer a translational method for achieving this goal More specif-ically, computer modeling can be seen as a means of dynamic knowledge representation that can form

Ngày tải lên: 13/08/2014, 16:21

... creating and enriching space for human activities Structure is the means by which space is spanned and enclosed Structure, then, is an integral and inevitable part of architecture, its form, its ... predominantly with tensile architecture whose application for permanent buildings has occupied this writer for the more than 30 years In tensile architecture the historic unity of structure and architecture ... economy, and its spirit Today this simple relationship is often lost, since, for smaller buildings, contemporary structural technology can support almost any chosen form For large spans structural form

Ngày tải lên: 09/06/2015, 17:24

... forward I am also grateful for the company of my fellow graduate students Cheng Huang and Anshoo Tandon Cheng Huang provided valuable comments on the project and Anshoo Tandan recommended helpful ... which reduces overhead and increases scalability Trang 2211 1.3.5 VANET Standards Dedicated Short Range Communications (DSRC) [37] are a group of protocols and standards for communications in ... Bibliography 75 Trang 8VII Summary Equipped with wireless transceivers, vehicles can be connected into a vehicular ad hoc network (VANET) to collect, share and utilize data for a variety of purposes,

Ngày tải lên: 16/09/2015, 12:42

... ENTITIES 31 Trang 8ADDITIONAL PUBLICATIONS 1 Xiaohang Wang, Daqing Zhang, Jinsong Dong, Chungyao Chin and Sanka Ravipriya Hettiarachchi Semantic Space: A Semantic Web Infrastructure for Smart Spaces ... give an overview of the Semantic Web technologies context-2.3.1 Semantic Web Standards The essence of the Semantic Web is a set of standards for the exchange of descriptions of Web entities and ... Resource Description Framework (RDF) and the Web Ontology Language (OWL) [28] RDF and OWL provide a standardized framework for asset management, enterprise Trang 33integration and the sharing and reuse

Ngày tải lên: 28/09/2015, 13:21

... quality and meaningful research, and theimportance of the writing medium in research substan-I would also like to thank my fellow researchers, Shao Tao, Zhu Yingjie, andVenkatesh Obanaik for their ... Trang 1AN EXTENSIBLE TESTING ENVIRONMENT FOR MOBILEAD-HOC NETWORKS SHAO NING NATIONAL UNIVERSITY OF SINGAPORE 2003 Trang 2AN EXTENSIBLE TESTING ENVIRONMENT FOR MOBILE ADHOC NETWORKS SHAO ... acceptance by MANET users Trang 252.2 Literature Survey Chapter 2 BackgroundMANET design and evaluation should take performance-cost ratio under sideration con-How well researchers understand the

Ngày tải lên: 28/09/2015, 13:28

... feedback, and especiallyPedro Brandão for all the help he gave me; the long-suffering Sukanta for listening to my rants; Jaya Shankar for the trust and encouragement; and Dr Winston Seah for the ... and ser-vices, and to manage mobility It will also have components for managing QoS, for initiating and maintain multimedia sessions, and for monitoring/metering, but we omit them for brevity We ... management of the-identities and their inter-relationships for a pervasive computing platform in a future all-IPv6 integrated network The relevant characteristics of these networks, and the challenges

Ngày tải lên: 28/09/2015, 13:28

... feasibility and practicality of the HIAC and HIAS models for the development Trang 5and assessment of trusted health systems Meanwhile, the OTHIS architecture has provided guidance for technical and ... technologies, and open standards A trusted and open system architecture is therefore needed to address the privacy protection and security for health systems in a holistic and end-to-end manner, and not ... in Australia, Canada, England, Germany, the Netherlands and the USA The security services and requirements for health information systems can be categorised into access control management, application

Ngày tải lên: 07/08/2017, 16:15

... scholarship. Project funding is provided by the Australian Research Council, Queensland University of Technology and Microsoft Research Asia.  Trang 18 Trang 191 Introduction Online browser based maps and location detection are an obvious amalgam for marking locations on maps. Such an amalgam would be an ideal foundation for scenarios involving field data entry by endusers, for example scientists, tapping into positioning and the relative simplicity of online maps.  ... money,  more  flexibility  and  better support for collaboration than current solutions can provide.  Trang 211.1.3 Web 2.0 and Rich Internet Applications Web  2.0  has  transformed  the  static  nature  ... describe  other  information.  Freeform  annotation  encapsulates  far  more  than tagging, with methods to provide detailed and structured annotation of information.  One of the driving forces behind these online document stores is the greatly reducing cost of data storage. With this fall in costs, technologies that automatically take backups, provide an always on archive or store multiple document revisions are becoming increasingly common, and are at the core 

Ngày tải lên: 07/08/2017, 16:15

... Trang 1Technological Advisory CouncilSupporting the Transition to IP Reference Architecture for Future Broadband Networks Extended Presentation Trang 2IP Transition Reference Architecture Effort ... mobile) Customer Access Equipment PSTN Transport and QoS marking is subject to bilateral agreement VoIP Trang 5Perspective on Service Provider VoIP – (Description for prior slide) Three elements ... (PPPoE)  VLAN and QoS tagging  Double VLAN tagging  S-tag for service class  C-tag for individual consumer flow  May use single VLAN per household and flow (1:1); or  Traffic to/from multiple

Ngày tải lên: 06/06/2018, 14:40

... working for a private construction company in Hanoi One of the informants were looking for a new job who was once working for a foreign construction consulting Trang 2620 company, one working for ... designed by Doan Van Giao (2005, cited in Ha, 2008) for students of Civil Engineering, Tran Thi Dung for students of Urban Planning (2007), Dinh Thi Thu Ha for students Informatics (2008) and Dora ... identified: English for Science and Technology (EST), English for Business and Economics, and English for Social Science (ESS) Architecture has long been considered as a trans-disciplinary domain,

Ngày tải lên: 30/09/2020, 12:41

... Tran ThiDung for students of Urban Planning (2007), Dinh Thi Thu Ha for studentsInformatics (2008) and Dora Chostelidou for students of Accountancy (2010) Theydid a needs analysis suitable for ... wereworking for a private construction company in Hanoi One of the informants werelooking for a new job who was once working for a foreign construction consulting Trang 26company, one working for state-owned ... areidentified: English for Science and Technology (EST), English for Business andEconomics, and English for Social Science (ESS) Architecture has long beenconsidered as a trans-disciplinary domain,

Ngày tải lên: 08/11/2020, 14:41