21 research outputs found
Priority checking RED for improving QoS in IPv6
This paper presents a priority checking random early detection (PC-RED) gateway for ensuring the quality of service (QoS) of high priority dataflow in IPv6 networks. A bit in the IP header is used in PC-RED to label the packet with the current status of the QoS that the dataflow is being treated in. The status of the QoS is determined by the difference between the packet average-dropping rate and the fixed desired limit dropping rate of the dataflow. PC-RED would perform dissimilarly to every dataflow corresponding to the different QoS status throughout congestions. PC-RED has been modeled and the parameter setting has been studied. Simulations of a TCP/IP network are used to illustrate how PC-RED affects the transfer of dataflow. The result shows remarkable contrast between the high-priority and non-priority dataflow throughput under PC- RED mechanism
PC-RED for IPv6: algorithm and performance analysis
This paper presents a Priority Checking Random Early Detection (PC-RED) gateway for ensuring the Quality of Service (QoS) of high priority dataflow in IPv6 networks. A bit in the IP header is used in PC-RED to label the current status of the QoS that the dataflow is being treated in, which is determined by the difference between the packet average-dropping rate and the fixed desired limit dropping rate of the dataflow. PC-RED would perform dissimilarly to every dataflow corresponding to the different QoS status throughout congestions. PC-RED has been modeled and the parameter setting has been studied. Simulation result shows remarkable contrast between the High-Priority and Non-Priority dataflow throughput under PC-RED mechanism
An average queue weight parameterization in a network supporting TCP flows with RED
In this paper we use a previously developed RED (random early detection) model to analyze and develop a quantitative approach of defining one of the RED parameters, average queue weight, while the network load level varies. First, we introduce the linear control system and the pre-developed RED model. Based on this model, we next develop a proposition aiming at the RED parameter, average queue weight, and the load level only, to ensure the system stay stable. Our research is intended to provide a quantitative basis for parameterizing RED while load level varies. We present ns simulations to support our analysis
Priority Checking RED for Improving QoS in IPv6
This paper presents a priority checking random early detection (PC-RED) gateway for ensuring the quality of service (QoS) of high priority dataflow in IPv6 networks. A bit in the IP header is used in PC-RED to label the packet with the current status of the QoS that the dataflow is being treated in. The status of the QoS is determined by the difference between the packet average-dropping rate and the fixed desired limit dropping rate of the dataflow. PC-RED would perform dissimilarly to every dataflow corresponding to the different QoS status throughout congestions. PC-RED has been modeled and the parameter setting has been studied. Simulations of a TCP/IP network are used to illustrate how PC-RED affects the transfer of dataflow. The result shows remarkable contrast between the high-priority and non-priority dataflow throughput under PC- RED mechanism
PC-RED for IPv6: Algorithm and Performance Analysis
This paper presents a Priority Checking Random Early Detection (PC-RED) gateway for ensuring the Quality of Service (QoS) of high priority dataflow in IPv6 networks. A bit in the IP header is used in PC-RED to label the current status of the QoS that the dataflow is being treated in, which is determined by the difference between the packet average-dropping rate and the fixed desired limit dropping rate of the dataflow. PC-RED would perform dissimilarly to every dataflow corresponding to the different QoS status throughout congestions. PC-RED has been modeled and the parameter setting has been studied. Simulation result shows remarkable contrast between the High-Priority and Non-Priority dataflow throughput under PC-RED mechanism
Designing PI controllers for TCP/IPv6 networks supporting differentiated QoS requirements
This paper presents a set of controllers for
TCP/IPv6 networks. These controllers are developed from the
traditional Proportional Integral Controller, and can support
differentiated Quality of Service Requirement of the end users.
Those requirements are labeled in the IPv6 header of the
packets, checked by the controllers upon their arrival to the
routers, so as to provide guidance to further dropping actions
when congestions occur. Simulation results demonstrate the
controllers’ ability of guaranteeing certain levels of Quality of
Service to the end users according to their demands
An Average Queue Weight Parameterization in a Network Supporting TCP Flows with RED
In this paper we use a previously developed RED (random early detection) model to analyze and develop a quantitative approach of defining one of the RED parameters, average queue weight, while the network load level varies. First, we introduce the linear control system and the pre-developed RED model. Based on this model, we next develop a proposition aiming at the RED parameter, average queue weight, and the load level only, to ensure the system stay stable. Our research is intended to provide a quantitative basis for parameterizing RED while load level varies. We present ns simulations to support our analysis
Adhesion strength of Trx-Balcp19k gel measured using a single-lap-joint shear strength test.
<p>(A) Representative load-distance profile of Trx-Balcp19k gel. (B) Adhesive shear strengths of several protein samples. The aggregated Trx-Balcp19k (Trx-Balcp19k gel) showed a greater adhesion strength (2.10 ± 0.67 MPa) compared to PVA craft glue (1.77 ± 0.54 MPa) and UHU glue (1.78 ± 0.65 MPa), while the disaggregated Trx-Balcp19k (Trx-Balcp19k foam) had an extremely low adhesion strength (40 ± 8 kPa), which was even lower than that of BSA (70 ± 15 kPa).</p
Adhesive aggregation formed by Trx-Balcp19k when dialyzed against Milli-Q water.
<p>(A) Sticky aggregation was generated after Trx-Balcp19k eluate was dialyzed against pure water, which was termed “Trx-Balcp19k gel” for simple description. (B) The slices of lyophilized Trx-Balcp19k gel. (C) The disaggregated Trx-Balcp19k exhibited a foam-like morphology when freeze dried, and therefore it was termed “Trx-Balcp19k foam”.</p
Structural schematic of Trx-Balcp19k.
<p>The Trx-Balcp19k is a hybrid protein with C-terminal Balcp19k and N-terminal Trx tag, His tag and S tag, as well as thrombin and enterokinase recognition sites.</p