ZDNet Resources
- TCP-ROME: Performance and Fairness in Parallel Downloads for Web and Real Time Multimedia Streaming Applications
- Parallel download protocols that establish multiple TCP connections to distributed replica servers have the potential to reduce file download time and to improve the quality of realtime multimedia downloads. Unfortunately, parallel download protocols are also inherently unfair towards single-flow downloads. This paper presents TCP-ROME, a parallel download protocol that allows...
- Tags: Web, Multimedia, Performance, Congestion, Deutsche Telekom AG, Fairness, Tcp/Ip, Networking
- White papers 2007-07-05
- End-to-end Fairness for TCP Traffic in 802.11e Wireless Mesh Networks Without Coordination
- This paper considers end-to-end per-station1 and per-flow fair bandwidth allocations for TCP traffic in 802.11 based multi-radio multi-hop networks. First it shows that TCP ACK packets have to be prioritised using IEEE 802.11e since otherwise congestion losses of ACK packets cause unpredictable performance. Then it proves that prioritising ACK packets...
- Tags: Mesh Networking, Network, TCP, Fairness, Wireless, Tcp/Ip, Networking
- White papers 2007-07-03
- Why do I only get flamed when I support Microsoft?
- Why do I only get flamed when I support Microsoft?You're Doing GreatChris,Thanks for putting up with the flames. You're doing a wonderful job and it's appreciated. I gave you some props on my blog:http://mrmoses.org/?p=69You seem to be a rare find in this industry, and IT person who like...
- Tags: Linux, Microsoft Windows, Using Windows, fairness, Microsoft Corp.
- Discussion threads 2007-05-15
- Fairness and Physical Layer Capture in Random Access Networks
- While physical layer capture has been observed in real implementations of wireless devices which randomly accessing shared channels, fair rate control algorithms based on accurate channel models describing the phenomenon have not been developed. In this paper, using the general physical channel model, the paper formally presents the characteristics of...
- Tags: Microsoft Access, Network, Columbia University, Domain, Allocation, Capture, Fairness
- White papers 2007-03-22
- Balancing Throughput and Fairness for TCP Flows in Multihop Ad-Hoc Networks
- Analyzing transport layer operation and enhancing its performance over multihop ad hoc networks have attracted a lot of attentions. Although the fundamental reasons for the performance degradation of TCP have been studied for many years, the tight coupling between transport layer and the wireless MAC layer is still not well...
- Tags: Network, TCP, Fairness, Optimization Framework, Tcp/Ip, Networking
- White papers 2007-02-23
- Fair Bandwidth Sharing Between Unicast and Multicast Flows in Best-Effort Networks
- This paper proposes a simple scheduler called SBQ (Service-Based Queuing) to share the bandwidth fairly between unicast and multicast flows according to a new definition of fairness referred as the inter-service fairness. The paper also describes a new active queue management mechanism called MFQ (Multicast Fair Queuing) to fairly share...
- Tags: Bandwidth, Computer Science, Fairness
- White papers 2007-01-01
- TCP Vegas-Like Algorithm for Layered Multicast Transmission
- Layered multicast is probably the most elegant solution to tackle the heterogeneity problem in multicast delivery of real-time multimedia streams. However, the multiple join experiments carried out by different receivers in order to detect the available bandwidth make it hard to achieve fairness. This paper presents a simple protocol, inspired...
- Tags: Algorithm, Multimedia, Layered Technologies Inc., TCP, Fairness, Tcp/Ip, Networking
- White papers 2007-01-01
- SBQ: A Simple Scheduler for Fair Bandwidth Sharing Between Unicast and Multicast Flows
- This paper proposes a simple scheduler called SBQ (Service-Based Queuing) to share the bandwidth fairly between unicast and multicast flows according to a new definition of fairness referred as the inter-service fairness. The paper utilizes the recently proposed active queue management mechanisms MFQ (Multicast Fair Queuing) to fairly share the...
- Tags: Bandwidth, Springer Science+Business Media, Fairness
- White papers 2007-01-01
- Podcast: SugarCRM CEO says attribution in open source licenses is about Fairness
- Podcast: SugarCRM CEO says attribution in open source licenses is about fairnesslicense merger defense?"SPL is nothing more than a merger of two existing open source licenses: the Mozilla Public License and the Attribution Assurance License. "If this is meant to defend SPL, it does a bad job. Merging two licenses...
- Tags: Mergers & Acquisitions, Podcasts, open source license, fairness, open source, merger, SugarCRM, podcast
- Discussion threads 2006-12-06
- TCP Fairness for Uplink and Downlink Flows in WLANs
- In WLANs, fairness is an important issue because the channel is shared by many users. This paper proposes a dual queue based scheme in an Access Point (AP) for TCP fairness among uplink flows and downlink flows. First, the paper discusses the unfairness problem of TCP flows due to different...
- Tags: WLAN, TCP, Fairness, Tcp/Ip, Networking
- White papers 2006-10-30
- CTCP: Improving TCP-Friendliness Over Low-Buffered Network Links
- Compound TCP (CTCP) is a sender-side improvement for TCP in high-speed and long distance networks. CTCP is a synergy of delay and loss-based congestion control, effectively combining them to achieve good efficiency, RTT fairness and TCP-friendliness. However, CTCP requires detecting incipient congestion effectively by estimating the backlogged packets and comparing...
- Tags: Congestion, TCP, Fairness, CTCP, Tcp/Ip, Networking
- White papers 2006-09-02
- Time-Driven Early Discard (TED) to Improve the Fairness of TCP Congestion Control
- This paper proposes a novel adaptive AQM (advanced queue management) approach called Time-Driven Early Discard (TED). The basic underlying idea is to set a deadline on packet service time in routers, beyond which packets are discarded. TED is shown to improve fairness among TCP connections sharing congested links when the...
- Tags: Deadline, TCP, Fairness, Time-Driven Early Discard, Underlying Idea, Tcp/Ip, Networking
- White papers 2006-08-29
- A Scalable Multiuser Framework for Video Over OFDM Networks: Fairness and Efficiency
- This paper proposes a framework to transmit multiple scalable video programs over downlink multiuser OFDM networks in real time. The framework explores the scalability of the video codec and multi-dimensional diversity of multiuser OFDM systems to achieve the optimal service objectives subject to constraints on delay and limited system resources....
- Tags: Video, Framework, Fairness, Corporate Communications, OFDM, Marketing, Wireless
- White papers 2006-08-09
- A Rate-Based Congestion Control Scheme for Reliable Multicast Achieving TCP Fairness
- TCP-friendly congestion control is a major requirement for reliable multicast to be deployed in the current Internet. This is because TCP responses to congestion control when it occurs, but multicast does not. Furthermore, TCP is the predominant protocol used in the current Internet. So it is important to make a...
- Tags: Congestion, TCP, Fairness, Tcp/Ip, Networking
- White papers 2006-05-02
- Experimental Evaluation of FAST TCP Performance and Fairness in DOCSIS Cable Modem Networks
- This paper presents experimental results evaluating the performance and fairness of FAST TCP in a series of tests involving realistic low rate network access scenarios. Links both using the DOCSIS cable modem Medium Access Control (MAC) cable modem and simple low rate links were investigated. It seeks to compare the...
- Tags: Cable Modem, Network, TCP, DOCSIS, Swinburne University, Fairness, Cable, Modems, Broadband Internet, Networking, Telecommunications, Personal Technology, Hardware, Components
- White papers 2006-05-01
- Incentive-Compatibility, Individual-Rationality and Fairness for Quality of Service Claims
- This paper discusses extensions to the pricing structures for the provision of IT services that ensure trust without requiring repeated interactions between service providers and users. The paper extends by providing theorems demonstrating the existence of incentive-compatible mechanisms for a broad class of expected costs to the user, and also...
- Tags: QoS, Hewlett-Packard Co., Fairness, Pricing, Marketing Research, Business Services, Marketing
- White papers 2006-02-27
- Increasing Fairness and Efficiency Using the MadMac Protocol in Ad Hoc Networks
- The IEEE 802.11 MAC layer is known for its unfairness behavior in ad hoc networks. Introducing fairness in the 802.11 MAC protocol may lead to a global throughput decrease. It is still a real challenge to design a fair MAC protocol for ad hoc networks that is distributed, topology independent,...
- Tags: IEEE 802.11, Advertisement, MAC, Fairness, Wireless LANs, Wi-Fi, Wireless
- White papers 2006-02-16
- Optimal Throughput Allocation in General Random-Access Networks
- This paper considers a model for random-access communication in networks of arbitrary topology. The authors characterize the efficient (Pareto) boundary of the network throughput region as the family of solutions optimizing weighted proportional fairness objective, parameterized by link weights. Based on this characterization a general distributed scheme is proposed that...
- Tags: Lucent Technologies Inc., Network, Allocation, Alcatel, Fairness, Networking
- White papers 2006-02-10
- Equilibrium and Fairness of Networks Shared by TCP Reno and Vegas/FAST
- It has been proved theoretically that a network with heterogeneous congestion control algorithms that react to different congestion signals can have multiple equilibrium points. This paper demonstrates this experimentally using TCP Reno and Vegas/FAST. It also shows that any desired inter-protocol fairness is in principle achievable by an appropriate choice...
- Tags: Network, TCP, Springer Science+Business Media, Fairness, Tcp/Ip, Networking
- White papers 2005-12-20
- Controlling TCP Fairness in WLAN Access Networks
- This paper studies the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs) based upon the IEEE 802.11 standard. TCP unfairness may result in significant degradation of performance leading to users perceiving unsatisfactory quality of service. The paper proposes and analyzes two solutions that are capable...
- Tags: Microsoft Access, WLAN, TCP, Fairness, Tcp/Ip, Wireless LANs, LANs, Networking, Wi-Fi, Wireless
- White papers 2005-12-01
White Papers and Webcasts