Topic
Packet loss
About: Packet loss is a research topic. Over the lifetime, 21235 publications have been published within this topic receiving 302453 citations.
Papers published on a yearly basis
Papers
More filters
•
20 Dec 2007TL;DR: In this article, the authors propose a rate controller that provides various techniques for maximizing the quality of real-time communications (RTC) over multi-hop networks such as the Internet.
Abstract: A “communications rate controller” provides various techniques for maximizing a quality of real-time communications (RTC) (including audio and/or video broadcasts and conferencing) over multi-hop networks such as, for example, the Internet. Endpoints in such networks generally communicate via a segmented path that extends through one or more routers between each endpoint. Maximization of conferencing quality is generally accomplished by providing in-session bandwidth estimation across segments of the network path between endpoints (i.e., communication/conference participants) in combination with a robust non-oscillating dynamic rate control strategy for maximizing usage of available bandwidth between RTC endpoints. Further, the dynamic rate control techniques provided by the communications rate controller are designed to prevent degradation in end-to-end delay, jitter, and packet loss characteristics of the RTC.
76 citations
•
30 Aug 2005TL;DR: In this article, the authors present a logging device, system and a method for managing network packets, which includes a traffic capturing device receiving network packets and filtering the network packets by selecting some of the packets based on a predefined criteria.
Abstract: A logging device, system and a method for managing network packets. The logging device includes a traffic capturing device receiving the network packets and filtering the network packets by selecting some of the network packets based on a predefined criteria. The logging device also includes a storage device storing the selected network packets and an analyzing component organizing the stored network packets in accordance with a user specified parameters. The traffic capturing component, the storage component, and the analyzing component are integrated in a single physical device providing a user with an ability to monitor real-time network traffic on the fly. The traffic capturing component selects the network packets for storage based on source and destination addresses of the network packets, based on a protocol of the network packets, based on a port designated, and based on whether a particular traffic session matches a predetermined signature.
76 citations
••
TL;DR: The experiment results show that the retransmission and packet loss in ZigBee communication are inevitable and unpredictable, and it is impossible for the adversary to track the updating of the dynamic encryption key.
Abstract: Integrating information network into power system is the key for realizing the vision of smart grid, but also introduces many security problems Wireless communication offers the benefits of low cost, rapid deployment, shared communication medium, and mobility; at the same time, it causes many security and privacy challenges In this paper, the concept of dynamic secret is applied to design an encryption scheme for smart grid wireless communication Between two parties of communication, the previous packets are coded as retransmission sequence, where retransmitted packet is marked as “1” and the other is marked as “0” During the communication, the retransmission sequence is generated at both sides to update the dynamic encryption key Any missing or misjudging in retransmission sequence would prevent the adversary from achieving the keys In our experiments, a smart grid platform is built, employing the ZigBee protocol for wireless communication And a dynamic secret-based encryption demo system is designed based on this platform The experiment results show that the retransmission and packet loss in ZigBee communication are inevitable and unpredictable, and it is impossible for the adversary to track the updating of the dynamic encryption key
76 citations
•
19 May 2003TL;DR: In this paper, the authors propose a control of the transmission of streaming data between a first data processing system and a second data processing systems in a packet network, where priority is assigned to packets of the streaming data based on characteristics of the packets of data.
Abstract: Control of the transmission of streaming data between a first data processing system and a second data processing system in a packet network is provided. Priorities are assigned to packets of the streaming data based on characteristics of the packets of streaming data. Performance of transmission of the packets from the first data processing system to the second data processing system is monitored and retransmission of selected ones of the packets from the first data processing system to the second data processing system is terminated based on the assigned priority of the selected ones of the packets and the monitored performance of transmission. The streaming data may be progressively encoded. Furthermore, the priorities assigned to the packets of streaming data may be based on the level of progressive coding associated with a packet of data.
76 citations
••
01 Jul 2008TL;DR: The anycast mechanism at the link layer for wireless ad hoc networks is developed and it is shown that anycast performs significantly better than 802.11 in terms of packet delivery, particularly when the path length or effect of fading is large.
Abstract: We develop an anycast mechanism at the link layer for wireless ad hoc networks. The goal is to exploit path diversity in the link layer by choosing the best next hop to forward packets when multiple next hop choices are available. Such choices can come from a multipath routing protocol, for example. This technique can reduce transmission retries and packet drop probabilities in the face of channel fading. We develop an anycast extension of the IEEE 802.11 MAC layer based on this idea. We implement the protocol in an experimental proof-of-concept testbed using the Berkeley motes platform and S-MAC protocol stack. We also implement it in the popular ns-2 simulator and experiment with the AOMDV multipath routing protocol and Ricean fading channels. We show that anycast performs significantly better than 802.11 in terms of packet delivery, particularly when the path length or effect of fading is large. Further we experiment with anycast in networks that use multiple channels and those that use directional antennas for transmission. In these networks, deafness and hidden terminal problems are the main source of packet loss. We implemented anycast as extension of 802.11 like protocols that were proposed for these special networks. We are able to show that anycast is capable of enhancing the performance of these protocols by simply making use of the path diversity whenever it is available.
76 citations