-
[show abstract]
[hide abstract]
ABSTRACT: Our focus on this paper was to apply adaptive load balancing to utilize network resource more efficiently and minimize congestion. We propose an adaptive load balancing scheme based on the real-time measurement, which is able to hold path integrity per flow while minimizing congestion. The simulation results show the proposed scheme can effectively balance load among multiple parallel LSPs.
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on; 09/2009
-
[show abstract]
[hide abstract]
ABSTRACT: The design of power distribution network to deliver noise free power to high performance systems of increasing package density, high clock speed, high power demand at low voltages, and large current change with fast slew-rate is a challenging task. This paper describes a novel power-ground plane design with low power supply noise, low radiation for modern system in package. We design this novel structure according to a kind of plant leaf nutrient delivering system because we think it works in the best way in nature. We wish deliver the direct current to each circuit element as the leaf delivers the nutrient with the least resistance. The designed power-ground plane structure consists of a power plane with perforation (top), and a ground plane (bottom). The size of the perforation is far below the wavelength in order that the existence of the perforated opening on the power planes contributes less to the radiation of the whole structure. There is good agreement between the numerical prediction method and measurement results. The measured S<sub>21</sub> is below -10 dB and SSN (simultaneous switching noise) cannot deliver into chip power system. The solders increase the DC resistance 2.7% for the novel structure power plane-ground plane and 18.68% for traditional structure. The Swiss-Chess structure effect (high resistance metal areas because of distributed via and solders and leading to the voltages or currents to the circuit-elements lower than design demand) is reduced. The simulated gain shows there is no antenna effect for our designed power-ground plane.
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on; 05/2008
-
[show abstract]
[hide abstract]
ABSTRACT: In CMOS circuits, where consumption is not steady, current peaks produce voltage drops through the inductance, which manifest themselves as fluctuations in the internal supply voltages. This kind of noise is known as delta-I noise, simultaneous switching noise (SSN) or ground bounce. This paper describes a novel method to reduce the SSN: on-chip microstrip-mismatching technique in the power supply wire. The microstrip is connected with the bonding wire. The microstrip is embedded in Si dielectric upon Si substrate and does not increase the size of the chip. Not only the impedance mismatching technique between the bonding wire and the microstrip is considered in order to get noise source reflection coefficient |Gamma<sub>g</sub>| = l at the end noise source-bonding wire, but also the microstrip length is properly designed to get source reflection coefficient Gamma<sub>gout</sub> = -1 at the end microstrip and make the input impedance of the microstrip looking out from the CMOS unit at nodes p and n close to zero, thereby shortening out the noise voltage. Si has high dielectric constant and can also greatly attenuate the noise because of high dielectric loss. The results of S <sub>21</sub> depicts that the transmission coefficient is around -40 dB . The technique developed in this paper has the advantage of simplicity, easy realization, non -oscillation and there is no size, weight and power dissipation penalties.
Electronic Packaging Technology, 2007. ICEPT 2007. 8th International Conference on; 09/2007
-
[show abstract]
[hide abstract]
ABSTRACT: Metro Ethernet services are being widespread adopted by service providers worldwide. In this paper, we have discussed three Ethernet transporting technologies: transporting Ethernet services over pure switched Ethernet network, over IP/MPLS network and over SDH-based MSTP. Based on a testbed and experiment, three important performance issues, encapsulation efficiency, end-to-end delay and fault protection, are measured and evaluated for transporting Ethernet services over metropolitan area networks and some conclusions are drawn
Sensor Networks, Ubiquitous, and Trustworthy Computing, 2006. IEEE International Conference on; 02/2006
-
[show abstract]
[hide abstract]
ABSTRACT: The significant advancement of Ethernet technology is pushing Ethernet from the local area network environment to metropolitan and wide area network environments. This paper presents a new traffic engineering scheme based on multiple spanning trees using a simple admission control algorithm. It is capable of making better use of network links bandwidth, balancing network traffic and maintaining admission fairness, priority and network efficiency together, resulting in the most amount of Ethernet virtual connections (EVC) accessible to network. Main application for this traffic engineering scheme is traffic distribution in optical cores or backbones of Metro Ethernet.
Networking, International Conference on Systems and International Conference on Mobile Communications and Learning Technologies, 2006. ICN/ICONS/MCL 2006. International Conference on; 02/2006
-
[show abstract]
[hide abstract]
ABSTRACT: Preemption is becoming an attractive strategy for bandwidth reservation and management in DiffServ-aware Traffic Engineering. In this paper, we propose an improved heuristic algorithm for the well-known optimization formulation based on versatile preemption policy, which can minimize the preemption cost with high accuracy and less computational intractability. Simulation results show that the proposed algorithm significantly outperforms well-known algorithms recently proposed in the literature. Moreover, we present a new path selection scheme to minimize preemption. Due to preemption of those LSPs that share more links with the selected path, the proposed scheme obviously minimize rerouting in DS-TE environments.
Computer Communications.
