RRP: A Register Mechanism Routing Protocol in Wireless Sensor Networks

[[abstract]]Wireless Sensor Networks (WSNs) are event-based systems that rely on the collective effort of several micro-sensor nodes. Reliable event detection at the sink is based on collective information provided by source nodes. When data needs to be gathered from a selected set of nodes and transmit to sink in the network. However the sensor nodes often face the critical challenge among all is the constraint on limited battery energy. Therefore, how to minimize the energy consumption while maintaining an extended network lifetime becomes the most critical issue in the WSNs. We present a routing protocol in cluster-based WSNs called the Register mechanism Routing Protocol (RRP). The RRP protocol is attempted to resolve the above issue. The performance of RRP is then compared to routing protocol such as HCDD (Hierarchical Cluster-based Data Dissemination in WSNs) and TTDD (Two-tier Data Dissemination Model for Large scale WSNs). The simulation results demonstrate that RRP may reach energy savings up to 21%~50%.[[notice]]補正完畢[[incitationindex]]EI[[booktype]]紙

Adaptive MAP Selection with Load Balancing Mechanism for the Hierarchical Mobile IPv6

[[abstract]]The Hierarchical Mobile IPv6 (HMIPv6), which is drawn up by the IETF (Internet Engineering Task Force), utilizes the Mobile Anchor Point (MAP) to reduce the considerable number of binding update (BU) messages among the mobile node (MN), the correspondent node (CN), and the home agent (HA). According to the HMIPv6 mechanism, the MAPof higher layer can efficiently reduce the frequency of performing binding update; the higher loading of service is the bottleneck of the whole network. Because the bandwidth of the MAP which can serve is finite, the whole network will be crashed due to the overloading if the MAPserves as the gateway at the same time. This paper proposes a MAP selection mechanism that takes the mobile node's particular characteristics which include the mobility velocity and quantity of communication services into consideration, the proposal can manage the MAPs efficiently. Besides, we design aMAPload balancing mechanism to avoid the network crash due to the overloaded MAP.[[notice]]補正完畢[[incitationindex]]EI[[booktype]]紙

A Sequence Frequency Reuse Scheme for Coordinated Multi-Point Transmission in LTE-A

[[abstract]]OFDMA communication technology becomes for the next generation mobile communication systems (4G)standards. Decreasing Inter-Cell Interference (ICI) is one of important issues in OFDMA. A new technology of LTE-A (Lone Term Evolution-Advanced) is CoMP(Coordinate Multi-Point, CoMP) transmission, which purpose is to solve low performance and poor quality of transmission due to interference cause by. Even through there are many LTE research papers are presented to explore the use of frequency reuse mechanism to solve the ICI, but they are inappropriate for CoMP technology. In this paper, we propose an efficiently Sequence Frequency Reuse (SeFR) scheme to improve low performance that cause by ICI, and making restrict in ICI seriously region to work smoothly on CoMP. According to the results of simulation, the proposed mechanism makes the CoMP transmission to achieve higher efficiency in the use of, and improves the SINR value of CEU (Cell Edge Users).[[abstract]]OFDMA communication technology becomes for the next generation mobile communication systems (4G) standards. Decreasing Inter-Cell Interference (ICI) is one of important issues in OFDMA. A new technology of LTE-A (Lone Term Evolution-Advanced) is CoMP(Coordinate Multi-Point, CoMP) transmission, which purpose is to solve low performance and poor quality of transmission due to interference cause by. Even through there are many LTE research papers are presented to explore the use of frequency reuse mechanism to solve the ICI, but they are inappropriate for CoMP technology. In this paper, we propose an efficiently Sequence Frequency Reuse (SeFR) scheme to improve low performance that cause by ICI, and making restrict in ICI seriously region to work smoothly on CoMP. According to the results of simulation, the proposed mechanism makes the CoMP transmission to achieve higher efficiency in the use of, and improves the SINR value of CEU (Cell Edge Users).[[sponsorship]]World Academy of Science[[conferencetype]]國際[[conferencedate]]20130722~20130725[[booktype]]紙本[[iscallforpapers]]Y[[conferencelocation]]Las Vegas, Nevada, US

A Handover Prediction Mechanism Based on LTE-A UE History Information

[[abstract]]In response to the rapidly developing of wireless communication technology, the deployed of eNB is denser and more complex. The research of how to handover accurately and fast in LTE-A are discussed much in recent years .In 3GPP Release 8, the UE History Information recorded by eNB was first proposed, it's proposed to provide eNB to judge the target eNB when handover. The history information includes the Cell ID and Time UE stayed in cell. We proposed an advance UE history information, reducing the handover failure rate and ping-pong handover rate by using the history information like Region-Domain, Time-Domain and Time To Trigger.[[sponsorship]]Tamkang University[[incitationindex]]EI[[conferencetype]]國際[[conferencetkucampus]]台北校園[[conferencedate]]20150902~20150903[[booktype]]電子版[[iscallforpapers]]Y[[conferencelocation]]Taipei, Taiwa

Cooperating intelligent mobile agents mechanism for distributed multimedia synchronization

[[abstract]]With the development of distributed multimedia systems, there has been much research on how to reduce network traffic and how to initialize and gather the distributed multimedia resources. We propose a robust system using intelligent mobile agents to construct an automatic and adaptation mechanism for distributed multimedia synchronization. Furthermore, an adaptive quality of service (QoS) mechanism is also support by this system. The Distributed Multimedia Synchronization Agent (DMSAgent) system is proposed to improve the efficiency of distributed multimedia networks. Furthermore, using intelligent and mobile agent technology will reduce the frequency of handshaking between client and server.[[conferencetype]]國際[[conferencedate]]20000730~20000802[[iscallforpapers]]Y[[conferencelocation]]New York, NY, US

A Concentric-based Sleep Scheduling Scheme for Wireless Sensor Networks

[[abstract]]In Wireless Sensor Networks (WSNs), how to extend the lifetime is an important issue. Our research uses Sleeping Scheduling scheme which divides the network into many concentric layers and rotates sensors in different odd and even layers to sleep. By our scheme, we can balance the power consumption among all sensors and reduce power and transmission load of sensors near sink. Our research use Transmit Power Control (TPC) technique to control topology and divide concentric layers, and use the topology to transmit packets to sink. Finally, the performance of our scheme is better than other Sleeping Scheduling schemes in the simulations.[[sponsorship]]Tamkang University[[incitationindex]]EI[[conferencetype]]åé[[conferencetkucampus]]å°åæ ¡å[[conferencedate]]20150902~20150903[[booktype]]é»å­ç[[iscallforpapers]]Y[[conferencelocation]]Taipei, Taiwa

A Fuzzy-based Dynamic Channel Allocation

[[abstract]]In traditional wireless networks, fixed allocation of spectrum is one of the main reason causing low utilization of spectrum. In order to solve this problem, a new wireless communication model has been proposed, which called Cognitive Radio Networks (CRN). CRN adopts Dynamic Spectrum Access (DSA) technology, thus it can flexibly use the spectrum which primary user temporarily unused. In cognitive radio networks, due to each secondary user (SU) has different location and surrounding spectrum environment, it may have variety of available channels. How to assign these available channels is the crucial point of system performance. However, existing methods doesn’t consider the problem of multipath fading; therefore, this study proposed an improved channel allocation scheme. We consider the received signal strength to define the channel access priority of secondary users applied by fuzzy theory. Finally, the simulation results show the superior of our approach and verify the effectiveness of the proposed scheme.[[sponsorship]]University of Colombo School of Computing, Sri Lanka[[incitationindex]]EI[[conferencetype]]國際[[conferencedate]]20150823~20150826[[booktype]]電子版[[iscallforpapers]]Y[[conferencelocation]]Colombo, Sri Lank

The Analysis of WiMAX Field Measurement

[[conferencetype]]國際[[conferencedate]]20110630~20110702[[booktype]]紙本[[conferencelocation]]Seou

Semantic Representation and Ontology Construction in the Question Answering System

[[conferencetype]]國際[[conferencedate]]20071016~20071019[[booktype]]紙本[[conferencelocation]]Aizu-Wakamatsu, Fukushim

Bandwidth Management and Disposition for 4G Wireless Network

[[abstract]]The integration of heterogeneous networks is a trend of Fourth Generation (4G) systems. But with more integrating network technologies, bandwidth management is more complicated. This paper proposes a bandwidth management method, called Bandwidth Management and Disposition (BMD). The BMD calculates the Reword Point (RP) to quantify the Mobile Host’s (MH) requests, and calculates the Upgrade Order (UO) or Degrade Order (DO) to quantify the upgraded or downgraded sequence of bandwidth, respectively. In the future, when a new service type or network technology is created, the proposed system functions also can be directly applied. This paper analyzes the BMD is more feasible than the other existed methods. The simulation results also demonstrate the functionality of the BMD.[[notice]]補正完畢[[incitationindex]]SCI[[booktype]]紙