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Packet loss

About: Packet loss is a research topic. Over the lifetime, 21235 publications have been published within this topic receiving 302453 citations.


Papers
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Proceedings ArticleDOI
07 Mar 2004
TL;DR: A passive methodology for TCP performance evaluation over general packet radio service (GPRS) networks is presented that relies on traffic monitoring at the GPRS ingress/egress router interface to analyze TCP performance and demonstrate the applicability of the method.
Abstract: In this paper a passive methodology for TCP performance evaluation over general packet radio service (GPRS) networks is presented that relies on traffic monitoring at the GPRS ingress/egress router interface (Gi). Based on the IP and TCP headers of the packets we estimate the end-to-end performance of TCP connections such as connection setup behavior and data transfer goodput. In order to identify the effects behind the measured performance the introduced algorithms estimate round trip delays, packet loss ratios, available channel rates, throughput and cany out bottleneck analysis. Large-scale GPRS measurements in seven countries are presented to analyze TCP performance and demonstrate the applicability of the method. The effects of different TCP parameters such as maximum segment size, selective acknowledgements, timestamp usage and receiver window size are also quantified. GPRS measurement results are compared to a wireline dial-up network to identify the effects specific to the wireless environment

107 citations

Journal ArticleDOI
TL;DR: Simulations for the scalable video coding (SVC) extension of the H.264/AVC standard showed that the proposed method for unequal error protection with a Fountain code required a smaller transmission bit budget to achieve high-quality video.
Abstract: Application-layer forward error correction (FEC) is used in many multimedia communication systems to address the problem of packet loss in lossy packet networks. One powerful form of application-layer FEC is unequal error protection which protects the information symbols according to their importance. We propose a method for unequal error protection with a Fountain code. When the information symbols were partitioned into two protection classes (most important and least important), our method required a smaller transmission bit budget to achieve low bit error rates compared to the two state-of-the-art techniques. We also compared our method to the two state-of-the-art techniques for video unicast and multicast over a lossy network. Simulations for the scalable video coding (SVC) extension of the H.264/AVC standard showed that our method required a smaller transmission bit budget to achieve high-quality video.

107 citations

Patent
Qing Guo1
30 Dec 2003
TL;DR: In this article, an initiator agent and a target agent exchange measurement and response messages to determine the performance of a network supporting communication between the initiator and the target agent, where the measurement packet include one or more performance metrics created by the initiate agent such as timestamp information and sequencing information.
Abstract: An initiator agent and target agent exchange measurement and response messages to determine the performance of a network supporting communication between the initiator agent and the target agent. The initiator agent creates and transmits measurement packets in a measurement packet group to the target agent. The measurement packet include one or more performance metrics created by the initiator agent such as timestamp information and sequencing information. The target agent receives the measurement packets, perform calculations of network performance metrics in generates corresponding response packets that are forwarded back to the initiator agent. The initiator agent receives the response packets and uses parameter information contained therein to calculate network link performance metrics such as one-way and round-trip packet latency of measurement and response packets as well as packet loss performance metrics for one-way and round-trip packet propagation between the initiator and target agents. Payload data within the measurement and response packets simulates application data traffic.

107 citations

Patent
Rajeev Shorey1
09 Jul 2001
TL;DR: In this article, statistical measures based on numerical values of, for example, Round Trip Time (RTT) are used to characterize connections as being, in this case, long or short.
Abstract: Providing packet-based service differentiation on packet-based networks involves first determining information associated with packets as a basis for inferring connection characteristics associated with the respective packet, as the packets pass though a particular network node. Statistical measures based on numerical values of, for example, Round Trip Time (RTT), is used to characterize connections as being, in this case “long” or “short”. “Long” connections are given a higher priority than “short” connections. Accordingly, the assigned priority associated with particular packets can be used to adjust drop probabilities for those packets.

107 citations

Patent
29 Sep 2000
TL;DR: In this paper, a method and apparatus for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information is presented.
Abstract: A method and apparatus for adaptively enforcing Quality of Service (QoS) policies for one or more flows of packets in a packet-switched network based on network feedback information. In one aspect, packets of a first group of flows are assigned to a first service level. Then-current interface congestion information for network traffic that is mapped to the first service level and that is passing through an interface of a network device in the network is received. Based on the then-current interface congestion information one or more flows from the first group of flows are selected. Packets from the one or more flows are then assigned to a second service level.

106 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023133
2022325
2021694
2020846
20191,033
2018993