The quality of service (QoS) on tunnel resilience of the label switch path (LSP) for the multiple... more The quality of service (QoS) on tunnel resilience of the label switch path (LSP) for the multiple protocol label switching (MPLS) technology has drawn much research attention recently. To address the relevant issue, we propose an architecture/mechanism of the area scoped LSP restoration for MPLS incorporating different classes of resilience QoS in this paper. We first define four QoS classes by a proper modification based on the draft of RSVP-TE fast reroute extension. Then, according to these QoS classes, two different scopes of area for the LSP recovery are designed to achieve each QoS requirement. We show that the proposed MPLS recovery mechanism is more scalable and can reduce latency of the LSP restoration.
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
In RF-based wireless powered communication networks (WPCNs), the wireless charging rate at a devi... more In RF-based wireless powered communication networks (WPCNs), the wireless charging rate at a device is usually low or unstable because of health concerns or time-varying characteristics of wireless channels. Under a low charging rate, the data backlog at a wireless device may be continuously increasing, leading to system performance degradation and data loss. To keep a wireless powered device stable and preserve a finite data backlog, the upper limit of data arrival/acquisition rate at a wireless powered device must be solved under the given data transmission rate and wireless charging rate. Hence, in this paper a novel two-dimensional continuous-time Markov chain model was proposed for analyzing the stability condition of a wireless powered device with a finite energy storage buffer. The average number of data packets, average packet delay, and energy shortage probability at a wireless powered device were analyzed as well. Additionally, simulations were conducted to validate the an...
Journal of the Chinese Institute of Engineers, 2012
A simple and systematic path-level performance evaluation method mainly composed of a decompositi... more A simple and systematic path-level performance evaluation method mainly composed of a decomposition technique and a parameter-fitting algorithm is proposed in this paper. With comprehensive considerations, this method works for a discrete-time tandem network with input of two-state Markov-modulated Bernoulli processes (MMBPs), which have potential applications in computer and communication networks. Of course, this proposed method offers convenience of traffic
Two scheduling mechanisms called enhanced distributed deficit round robin with backoff interval (... more Two scheduling mechanisms called enhanced distributed deficit round robin with backoff interval (EDDRR-BI) and enhanced distributed elastic round robin with backoff interval (EDERR-BI) are proposed in this paper for the IEEE 802.11e wireless LAN. EDDRR-BI and EDERR-BI take both priority which is a mean to guarantee quality of service (QoS) and fairness simultaneously into account so that QoS and fairness
2012 IEEE Network Operations and Management Symposium, 2012
Focusing on the issues of security and energy efficiency, we present an energy-efficient secure r... more Focusing on the issues of security and energy efficiency, we present an energy-efficient secure routing protocol for wireless sensor networks (WSNs). With the location and energy-aware characteristics for routing, our protocol gives a better delivery rate, energy balancing, and routing efficiency. In addition, the proposed security mechanism ensures the data authenticity and confidentiality in the data delivery. Evaluating the proposed protocol through both simulation and analysis, we show that our proposed protocol can significantly outperform the closest routing protocol and security mechanism.
AbstractTo guarantee seamless handoffs between access points (APs) is one of the most decisive f... more AbstractTo guarantee seamless handoffs between access points (APs) is one of the most decisive factors in providing realtime applications such as voice over internet protocol (VoIP) in IEEE 802.11 networks. It is because in wireless local area net-works (WLANs) there is no specific ...
2008 International Conference on Machine Learning and Cybernetics, 2008
A simple and systematic method mainly composed of a decomposition technique and a parameter fitti... more A simple and systematic method mainly composed of a decomposition technique and a parameter fitting algorithm is proposed in this paper to get end-to-end performance measures for a discrete-time tandem network with inputs of two-state Markov-modulated Bernoulli processes (MMBPs). To validate the proposed method, several experiments are conducted. We show that the proposed method has good accuracy in performance evaluation for such a tandem network in terms of delay, delay variance, and packet loss probability.
The quality of service (QoS) on tunnel resilience of the label switch path (LSP) for the multiple... more The quality of service (QoS) on tunnel resilience of the label switch path (LSP) for the multiple protocol label switching (MPLS) technology has drawn much research attention recently. To address the relevant issue, we propose an architecture/mechanism of the area scoped LSP restoration for MPLS incorporating different classes of resilience QoS in this paper. We first define four QoS classes by a proper modification based on the draft of RSVP-TE fast reroute extension. Then, according to these QoS classes, two different scopes of area for the LSP recovery are designed to achieve each QoS requirement. We show that the proposed MPLS recovery mechanism is more scalable and can reduce latency of the LSP restoration.
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
In RF-based wireless powered communication networks (WPCNs), the wireless charging rate at a devi... more In RF-based wireless powered communication networks (WPCNs), the wireless charging rate at a device is usually low or unstable because of health concerns or time-varying characteristics of wireless channels. Under a low charging rate, the data backlog at a wireless device may be continuously increasing, leading to system performance degradation and data loss. To keep a wireless powered device stable and preserve a finite data backlog, the upper limit of data arrival/acquisition rate at a wireless powered device must be solved under the given data transmission rate and wireless charging rate. Hence, in this paper a novel two-dimensional continuous-time Markov chain model was proposed for analyzing the stability condition of a wireless powered device with a finite energy storage buffer. The average number of data packets, average packet delay, and energy shortage probability at a wireless powered device were analyzed as well. Additionally, simulations were conducted to validate the an...
Journal of the Chinese Institute of Engineers, 2012
A simple and systematic path-level performance evaluation method mainly composed of a decompositi... more A simple and systematic path-level performance evaluation method mainly composed of a decomposition technique and a parameter-fitting algorithm is proposed in this paper. With comprehensive considerations, this method works for a discrete-time tandem network with input of two-state Markov-modulated Bernoulli processes (MMBPs), which have potential applications in computer and communication networks. Of course, this proposed method offers convenience of traffic
Two scheduling mechanisms called enhanced distributed deficit round robin with backoff interval (... more Two scheduling mechanisms called enhanced distributed deficit round robin with backoff interval (EDDRR-BI) and enhanced distributed elastic round robin with backoff interval (EDERR-BI) are proposed in this paper for the IEEE 802.11e wireless LAN. EDDRR-BI and EDERR-BI take both priority which is a mean to guarantee quality of service (QoS) and fairness simultaneously into account so that QoS and fairness
2012 IEEE Network Operations and Management Symposium, 2012
Focusing on the issues of security and energy efficiency, we present an energy-efficient secure r... more Focusing on the issues of security and energy efficiency, we present an energy-efficient secure routing protocol for wireless sensor networks (WSNs). With the location and energy-aware characteristics for routing, our protocol gives a better delivery rate, energy balancing, and routing efficiency. In addition, the proposed security mechanism ensures the data authenticity and confidentiality in the data delivery. Evaluating the proposed protocol through both simulation and analysis, we show that our proposed protocol can significantly outperform the closest routing protocol and security mechanism.
AbstractTo guarantee seamless handoffs between access points (APs) is one of the most decisive f... more AbstractTo guarantee seamless handoffs between access points (APs) is one of the most decisive factors in providing realtime applications such as voice over internet protocol (VoIP) in IEEE 802.11 networks. It is because in wireless local area net-works (WLANs) there is no specific ...
2008 International Conference on Machine Learning and Cybernetics, 2008
A simple and systematic method mainly composed of a decomposition technique and a parameter fitti... more A simple and systematic method mainly composed of a decomposition technique and a parameter fitting algorithm is proposed in this paper to get end-to-end performance measures for a discrete-time tandem network with inputs of two-state Markov-modulated Bernoulli processes (MMBPs). To validate the proposed method, several experiments are conducted. We show that the proposed method has good accuracy in performance evaluation for such a tandem network in terms of delay, delay variance, and packet loss probability.
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