hspa transport network layer congestion control

... Trang 1The network layer Addressing and routing 1 Mobility and addressing 1 What is the DHCP protocol used for? Assign IP addresses and network conguration of automatic ... It is supposed that 2 IP sub-network share physically the same LAN The stations on each sub-network then will see circulating all the packets diffused on the physic network Trang 6a) Which problem ... the IP address in answer to a request Problem A network administrator must reconsider the network plan of his company He must conceive the new network plan detail who will have to allow the automatic

Ngày tải lên: 17/09/2012, 09:13

... 1Abstract: The Next Generation Network (NGN) and the rapid growth of new services on the All-IP basis pose new challenges to congestion control TCP congestion control and its enhanced variations ... number of new services needs congestion control that not relies on TCP mechanism [21,20,13,8,9,4,3,2] There is an actual need to systematically revise typical congestion control methods, in order ... cấp thiết hơn đối với Điều khiển chống tắc nghẽn trong các mạng NGN – toàn IP Congestion Control in NGN – All IP Networks Cao Huy Phương, Hoàng Đăng Hải Trang 2mạng NGN? Những tiêu chí có thể

Ngày tải lên: 24/12/2013, 07:16

... Introduction 1 How Network Access Quarantine Control Works 7 How to Deploy Network Access Quarantine Control 9 Alternate Configurations 26 Appendix A - Sample Quarantine Script 29 Appendix B – Network ... used internally comply with network policy, those used from employee’s homes for remote access can still present significant risk to the network Network Access Quarantine Control, a new feature in ... access connections Trang 6Components of Network Access Quarantine ControlFigure 2 shows the components of Windows remote access for Network Access Quarantine Control when RADIUS is being used as

Ngày tải lên: 23/01/2014, 06:20

... osteoblast differentiation, is under the tight control of the central and peripheral nervous systems Among other players in this neuro-osteogenic network, the neuropeptide Y (NPY) system has attracted ... 1Neuropeptide Y and osteoblast differentiation – thebalance between the neuro-osteogenic network and local control Filipa Franquinho1,2,*, Ma´rcia A Liz1,*, Ana F Nunes3, Estrela Neto4,5, Meriem ... including bone cells capable of NPY expression The interaction of these distinct players to achieve a multilevel control system of bone homeostasis is still under debate In this review, we will

Ngày tải lên: 18/02/2014, 04:20

... DATA TRAFFICThe main focus of congestion control and quality of service is service is data traffic data traffic In congestion control we try to avoid traffic congestion In quality of service, ... better understand the concept of congestion control, let us give two examples: one in TCP and the other in Frame Relay. Congestion Control in TCP Congestion Control in Frame Relay Topics discussed ... Congestion control categories Trang 10Figure 24.6 Backpressure method for alleviating congestionTrang 11Figure 24.7 Choke packet Trang 1224-4 TWO EXAMPLESTo better understand the concept of congestion

Ngày tải lên: 06/03/2014, 12:20

... end-to-end congestion control for best-effort traffic Simi-larly, it is no longer possible to rely on all developers to incor-porate end-to-end congestion control in their Internet applica-tions The network ... collapse and congestion collapse from undelivered packets, other potential forms of congestion collapse include fragmentation-based congestion collapse, congestion collapse from increased control ... behind congestion collapse from undelivered packets is the absence of end-to-end congestion control, one question is how to build the right incentives into the network What is needed is for the network

Ngày tải lên: 15/03/2014, 22:20

... The adaptive rate control scheme in the H.264/AVC is composed of two layers: the GOP layer rate control and the frame layer rate control An additional basic unit layer rate control is added if ... basic unit layer rate control In addition, only the frame layer rate control is modified; the opera-tion of the GOP layer rate control remains the same The operation of the GOP layer rate control ... used to adjust the QP assignment to improve the frame layer rate control 5 Proposed frame layer rate control enhancements The purpose of rate control is to compute QP for all frames within the allowable

Ngày tải lên: 20/06/2014, 22:20

... original jitter ratio to compare withk/w ratio. 3.2 Congestion Control Policy of JSCTP 3.2.1 Rate-Based Congestion Control Original congestion control scheme of SCTP followed AIMD algorithm to ... wired-wireless heterogeneous networks, the current trend of last mile deployment is towards wireless access networks Due to the hybrid network topology, transport layer protocols should carry ... equipped with wired or wireless network interfaces could access networked data and service anywhere However, common transport layer protocols such as Transmission Control Protocol (TCP) and User

Ngày tải lên: 21/06/2014, 05:20

... five chapters related to Network Aspects and Applications of Ad Hoc, Sensor and Mesh Networks In this section, the network layer design in cellular, ad hoc, sensor and mesh networks for specific ... Trang 1Mobile and Wireless Communications: Network layer and circuit level design Trang 3Mobile and Wireless Communications: Network layer and circuit level design Edited by Salma Ait ... Morio Toyoshima, Naoki Miyashita, Yoshihisa Takayama, Hiroo Kunimori and Shinichi Kimura Trang 11Call Admission Control in Mobile and Wireless Networks 1Call Admission Control in Mobile and Wireless Networks Georgios I Tsiropoulos, Dimitrios G Stratogiannis and Eirini Eleni Tsiropoulou

Ngày tải lên: 21/06/2014, 14:20

... connection-admission control for multimedia wireless networks using a Hopfield neural network IEEE Transactions on Vehicular Technology, 53 (1), 106-117 Ayyagari, D., & Ephremides, A (1998) Admission Control ... connection-admission control for multimedia wireless networks using a Hopfield neural network IEEE Transactions on Vehicular Technology, 53 (1), 106-117 Ayyagari, D., & Ephremides, A (1998) Admission Control ... Packet Networks IEEE/ACM Transactions on Networking, 5 (1), 56-70 Jamin, S., Shenker, S J., & Danzig, P B (1997) Comparison of Measurement-based Admission Control Algorithms for Controlled-Load

Ngày tải lên: 21/06/2014, 14:20

... create network, with different topology When IQRF networking functionality is used, it network exist coordinator and unit They have very similar OS, differences are in the function to control network ... of IQMESH network chaining is shown in Fig 5 Two networks in Fig 5, Network 1 and Network 2, are independent IQRF wireless networks Every such network has one Coordinator (C) and one or more slave ... in the Network 1 and simultaneously create own Network 2 as its Coordinator Listening communication in both networks, some packets received in the Network 1 would be forwarded to the Network

Ngày tải lên: 21/06/2014, 14:20

... wireless world, including wireless home networking, density use in business cores, wireless speakers, wireless USB, high-speed WPAN, wireless sensors networks, wireless telemetry, and telemedecine ... and feed probe where the current density concentrates Thus, different techniques are proposed to control the upper edge frequency such as beveling the square element on one or both sides of the ... plane and feed gap between the partial ground plane and the radiator may be used to enhance and control the impedance bandwidth The feed gap method is crucial for obtaining wideband characteristics

Ngày tải lên: 21/06/2014, 14:20

... adhesive tapes (upper layer on Figure 19) The slits are first covered by an isolating adhesive layer, which insures a dc isolation maintaining RF continuity The adhesive layer is then topped with ... adhesive tapes (upper layer on Figure 19) The slits are first covered by an isolating adhesive layer, which insures a dc isolation maintaining RF continuity The adhesive layer is then topped with ... appropriate matching point for the four bands of operation The antenna impedance can be matched to 50Ω by controlling the distance between the feed point and the shorting wall The PIFA antenna is fabricated

Ngày tải lên: 21/06/2014, 14:20

... input impedance, the device gain, and stability factor are important for the design of matching networks These factors can be expressed as a function of S–parameters and fitted during the optimization ... applied intrinsic voltages Vgs and Vds, whereas the amount of trapping induced current dispersion is controlled by the ac components of these voltages These components are extracted from the intrinsic ... applied intrinsic voltages Vgs and Vds, whereas the amount of trapping induced current dispersion is controlled by the ac components of these voltages These components are extracted from the intrinsic

Ngày tải lên: 21/06/2014, 14:20

... Network Congestion Control Managing Internet Traffic Michael Welzl Leopold Franzens University of Innsbruck Network Congestion Control Network Congestion Control Managing Internet ... 1 Congestion control principles 2.1 What is congestion? 2.1.1 Overprovisioning or control? 2.2 Congestion collapse 2.3 Controlling congestion: design ... 4.5 Congestion control for multimedia applications 4.5.1 TCP-friendly congestion control mechanisms 4.5.2 The Datagram Congestion Control Protocol (DCCP) 4.5.3 Multicast congestion...

Ngày tải lên: 02/03/2013, 16:59

... protocol: add reliability and congestion control to UDP  New congestion control algorithm designed for high performance data transfer over high-speed wide area networks  Open source: http://udt.sourceforge.net ... the UDT library: congestion control, data reliability, etc  Compile time option: no performance drop for the original UDT udt.sourceforge.net :: UDT with Configurable Congestion Control (CCC)  ... specific congestion control algorithm to a UDT connection  Per connection control  Dynamically configurable udt.sourceforge.net :: Motivations  Easy implementation and deployment of new control...

Ngày tải lên: 15/01/2014, 15:59

... control and congestion control are sometimes used synonymously) Controlling the rate of a data flow within the network for the sake of the network itself is clearly what we nowadays call congestion ... congestion control in the transport rather than in the network layer? In order to answer this, we need to look at the reason for making ‘flow control a layer function in the OSI standard: congestion ... the network, and (ISO 1994) explicitly says that the network layer is supposed to hide details concerning the inner network from the transport layer Therefore, adding functionality in the transport...

Ngày tải lên: 14/08/2014, 12:20

... congestion control and reliability By describing two methods that limit the amount of data that TCP sends into the network on the basis of end-to-end feedback, Van Jacobson added congestion control ... control chunks Congestion control in SCTP is largely similar to TCP; in particular, while some of the features listed above (e.g reliable out-of-order data delivery) not influence congestion control ... original segment has left the network, and it can also indicate that both the original and its duplicate have left the network This may lead to a 3.4 TCP CONGESTION CONTROL AND RELIABILITY 83 wrong...

Ngày tải lên: 14/08/2014, 12:20

... protocol 4.2 MAINTAINING CONGESTION STATE 119 4.2 Maintaining congestion state Congestion occurs along a network path – between two IP addresses Since TCP is a transport layer protocol, several ... presence of congestion 4.1.5 Spurious timeouts Sometimes, network effects such as ‘route flapping’ (quickly changing network paths), connection handover in mobile networks or link layer error ... as some kind of link layer congestion control functionality that runs underneath IP First and foremost, the very fact that ATM ABR is a service is noteworthy: congestion control can indeed realize...

Ngày tải lên: 14/08/2014, 12:20

... the sum of all link prices 4.5 CONGESTION CONTROL FOR MULTIMEDIA APPLICATIONS 139 4.5 Congestion control for multimedia applications TCP provides reliable congestion- controlled data delivery While ... look at some congestion control mechanisms for such scenarios 4.5.1 TCP-friendly congestion control mechanisms It seems to me that the research topic of unicast TCP-friendly congestion control for ... multimedia and computer networks; so, at this point, we turn to congestion control again From the discussion above, we can see that a smooth sending rate of a congestion control mechanism is desirable...

Ngày tải lên: 14/08/2014, 12:20