26 research outputs found

    A Novel Packet Scheduling Scheme for Downlink LTE System

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    [[abstract]]Long term evolution (LTE) is the next generation wireless system. There are not many researches for LTE downlink scheduling. It uses orthogonal frequency division multiple access (OFDMA) in downlink. Until now, the goal for the LTE scheduler is achieving the system highest performance, but it will cause to lower priority connection delay or starvation under limited bandwidth resources. Therefore, we design a LTE downlink scheduling scheme and resource allocation strategy which are not only to achieve the system highest performance, but also avoid latency and starvation problem.[[notice]]補正完畢[[conferencetype]]國際[[conferencedate]]20111014~20111016[[iscallforpapers]]Y[[conferencelocation]]Dalian, China[[countrycodes]]CH

    HIP-based Handover Mechanism under MIH Architecture in Heterogeneous Wireless Networks

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    [[abstract]]In this paper, we offers a HIP-based vertical handover scheme under MIH architecture in heterogeneous wireless network. Many diversity wireless access technologies are offering in Next Generation Wireless Networks (NGWN). In NGWN, the integration of wireless access network will be accomplished by seamless handover which contains many challenges i.e. service mobility, vertical handover, common authentication, unified accounting/billing, security mechanisms, QoS and service provisioning, etc. Toward this direction, our research aims to provide a complete integration of heterogeneous network architecture and support a fit mobility management for network to seamless handover. We focus on simulation about vertical handover execution for WiMAX to WiFi scenario. Our idea can modify defects of Mobile IP and SIP. And it provides internet users always best connection. Moreover, we hope to contribute our research to beyond 4G wireless networks.[[notice]]補正完畢[[conferencetype]]國際[[conferencedate]]20110621~20110623[[booktype]]紙本[[booktype]]電子版[[iscallforpapers]]Y[[conferencelocation]]Gyeongju, Korea[[countrycodes]]KO

    Distributed Fault-Tolerant Embeddings of Rings in Incrementally Extensible Hypercubes with Unbounded Expansion

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    [[abstract]]The Incrementally Extensible Hypercube (IEH) is a generalization of interconnection network that is derived from the hypercube. Unlike the hypercube, the IEH can be constructed for any number of nodes. That is, the IEH is incrementally expandable. In this paper, the problem of embedding and reconfiguring ring structures is considered in an IEH with faulty nodes. There are a novel embedding algorithm proposed in this paper. The embedding algorithm enables us to obtain the good embedding of a ring into a faulty IEH with unbounded expansion, and such the result can be tolerated up to O(n*log2m ) faults with congestion 1, load 1, and dilation 4. The presented embedding methods are optimized mainly for balancing the processor loads, while minimizing dilation and congestion as far as possible.[[notice]]補正完畢[[journaltype]]國際[[incitationindex]]EI[[ispeerreviewed]]Y[[booktype]]紙本[[countrycodes]]TW

    An Integrated Building Fire Evacuation System with RFID and Cloud Computing

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    [[abstract]]Building fire is a common disaster happening in our daily life that causes unfortunate casualties and deaths. Successfully escaping from fire depends on the design of evacuation route and time, as most of the damage of fire is caused due to lack of evacuation equipments or poor design of the emergency route. In this research work, we designed a hybrid building fire evacuation system (HBFES) on a mobile phone using Radio Frequency Identification (RFID) techniques and Cloud Computing. The system will be implemented at Tamkang University on Lanyang campus. Several existing computer or mobile phone applications, namely Viewpoint Calculator, Path planner, and MobiX3D viewer will be used on the system to rapidly calculate reliable evacuation routes when building fire takes place.[[notice]]補正完畢[[conferencetype]]國際[[conferencedate]]20111014~10111016[[ispeerreviewed]]Y[[booktype]]紙本 電子版[[iscallforpapers]]Y[[conferencelocation]]Dalian, China[[countrycodes]]CH

    A Real-time Decision Support with Cloud Computing Based Fire Evacuation System

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    [[abstract]]An effective evacuation system can help people escape from building fire. Most evacuation systems consist of a indoor positioning system, a back-end database, and a display device with calculation and display software. However, very few of them can smartly determine which evacuation route is the best decision. If all the locations of the evacuating people can be simultaneously determined, the best evacuation routes can be decided to avoid congestion, and survival rate can increase. The previous radio frequency identification (RFID) based evacuation system focused on detecting the RFID tags using a mobile phone in order to determine the location of the mobile phone user so that an evacuation route can be displayed. However, the system is available for one person regardless of the number of evacuating people or exits. This study is based on the previous RFID based evacuation system investigating the best evacuation routes. The system introduces cloud computing that calculates for positioning the evacuating people and determining the optimum evacuation routes for each of them. The system will be implemented at Tamkang University on Lanyang campus.[[notice]]補正完畢[[conferencetype]]國際[[conferencedate]]20111024~20111026[[booktype]]紙本;電子版[[iscallforpapers]]Y[[conferencelocation]]Macao[[countrycodes]]MA

    Pan-cancer analysis of whole genomes

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    Cancer is driven by genetic change, and the advent of massively parallel sequencing has enabled systematic documentation of this variation at the whole-genome scale(1-3). Here we report the integrative analysis of 2,658 whole-cancer genomes and their matching normal tissues across 38 tumour types from the Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium of the International Cancer Genome Consortium (ICGC) and The Cancer Genome Atlas (TCGA). We describe the generation of the PCAWG resource, facilitated by international data sharing using compute clouds. On average, cancer genomes contained 4-5 driver mutations when combining coding and non-coding genomic elements; however, in around 5% of cases no drivers were identified, suggesting that cancer driver discovery is not yet complete. Chromothripsis, in which many clustered structural variants arise in a single catastrophic event, is frequently an early event in tumour evolution; in acral melanoma, for example, these events precede most somatic point mutations and affect several cancer-associated genes simultaneously. Cancers with abnormal telomere maintenance often originate from tissues with low replicative activity and show several mechanisms of preventing telomere attrition to critical levels. Common and rare germline variants affect patterns of somatic mutation, including point mutations, structural variants and somatic retrotransposition. A collection of papers from the PCAWG Consortium describes non-coding mutations that drive cancer beyond those in the TERT promoter(4); identifies new signatures of mutational processes that cause base substitutions, small insertions and deletions and structural variation(5,6); analyses timings and patterns of tumour evolution(7); describes the diverse transcriptional consequences of somatic mutation on splicing, expression levels, fusion genes and promoter activity(8,9); and evaluates a range of more-specialized features of cancer genomes(8,10-18).Peer reviewe

    Handover Scheme in LTE-based Networks with Hybrid Access Mode Femtocells

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    100學年度研究獎補助論文[[abstract]]Femtocell networks that use Home evolved NodeB (HeNB) and existing networks for backhaul connectivity can fulfill the upcoming demand for high data rates in wireless communication systems as well as extend the coverage area. We consider some parameters for handovers, including interference, velocity, RSS and quality of service (QoS) level. We propose a new handover strategy between the femtocell and the macrocell for LTE (Long Term Evolution) -based networks in hybrid access mode. This strategy can avoid unnecessary handovers and can reduce handover failure. In this paper, we analyze three scenarios for handover decision strategy procedures: hand-in for Closed Subscriber Groups, hand-in for non-Closed Subscriber Groups, and hand-out.[[notice]]補正完畢[[journaltype]]國外[[incitationindex]]EI[[booktype]]紙本[[countrycodes]]KO

    Real-time-service-based Distributed Scheduling Scheme for IEEE 802.16j Networks

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    [[abstract]]Supporting Quality of Service (QoS) guarantees for diverse multimedia services is the primary concern for IEEE802.16j networks. A scheduling scheme that satisfies the QoS requirements has become more important for wireless communications. We proposed an adaptive nontransparent-based distributed scheduling scheme (ANDS) for IEEE 802.16j networks. ANDS comprises three major components: Priority Assignment, Resource Allocation, Preserved Bandwidth Adjustment. Different service-type connections primarily depend on their QoS requirements to adjust priority assignments and dispatch bandwidth resources dynamically. Meanwhile, we promote the connections, which do not satisfy QoS requirements, to avoid the delay and starvation. Simulation results show that our APS methodology outperforms the representative scheduling approaches in both QoS satisfaction and maintains fairness in starvation prevention.[[notice]]補正完畢[[journaltype]]國外[[incitationindex]]EI[[ispeerreviewed]]Y[[booktype]]電子版[[countrycodes]]FI

    校務行政無線資訊平台嵌入行動代理人機制--以無線成績輸入系統為例

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    本書目待補正[[abstract]]無線建置不僅僅在校園大量地被使用與建置, 在國內各個大都會都市亦積極地建置無線網路 (Wireless LAN , WLAN )[5]以達成通訊涵蓋率高、 通訊無死角及高傳輸率,以台北捷運沿途為例,台 北市政府所投入的無線建置的工程浩大,任何持有 無線裝置設備的使用者均可以自由遨遊於無線網 際網路的虛擬世界中,當然認證之機制或付費之機 制均存在於無線網路中,服務提供者(Service Provider)根據市場需求及營運模式提供不同的無 線服務等級,例如麥當勞採用收費機制。 校園無線這個名詞已經普遍地流傳於各大專 院校之中,但往往眾多校園所能提供的服務均有大 量的限制或提供的服務無法滿足客戶的需求,大部 份的學校僅僅提供無線上網或網頁電子郵件這些 少許的功能而已,因此本研究在看好校務行政系統 [1][2]在校園無線的服務應用上有極大的發揮空 間。[[notice]]補正完畢[[conferencetype]]國內[[conferencedate]]20050101~2005010

    Surface Construction from Kinect RGB-D Stream

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    [[abstract]]An object surface extraction from a set of point clouds extracted using a Kinect V2 sensor is presented here. First several point clouds are extracted from different angles around the object. Second point clouds are registered with each other using the Iterative Closest Point algorithm. If the angle between two camera positions is large, point clouds are manually rough aligned. Then iterative closest point algorithm provides a finer alignment. Next the object boundary is found enclosing all the points in the aligned and merged point cloud. After that a triangular mesh is created with the boundary points. Finally colors acquired from the original point cloud are applied on the triangular surface generated. For a better visual effect colors of the points are interpolated on the triangular mesh generated.[[notice]]補正完
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