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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/79548

    Title: 共享式低功耗廣域網路系統實作及其效能評估;Shared Low-Power WAN System Implementation and Performance Evaluation
    Authors: 邰淯駿;Tai, Yu-Chun
    Contributors: 通訊工程學系
    Keywords: 物聯網;LoRa;LoRaWAN;共享經濟;Internet of Things;LoRa;LoRaWAN;Sharing economy
    Date: 2018-10-17
    Issue Date: 2019-04-02 15:00:11 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 物聯網(Internet of Things,IoT)為現今最熱門的名詞,其不單單只是把物體連接上網並集結起來,其目的更包含了許多創新商業及服務價值,在未來充滿無限的商機!早期物聯網沒有針對少量資料的長距離、低功耗的傳輸應用場景,但現有LoRa(Long Range)技術來改善。LoRa的特點是以1GHz以下的ISM傳輸頻段,接受靈敏度達到-148dbm,使得傳輸距離最遠能到15公里,並同時具備低耗能的優點。不過由於LoRa建置初期需要花費較大成本建置基地台,普及率因此受限。本論文旨在以共享經濟的概念,實作共享式LoRa基地台,即人人是使用者亦是基地台,有使用者的地方,就是LoRa網路有涵蓋的地方,降低基地台成本。
    本論文並將此構想應用於寵物追蹤情境,再透過實驗模擬驗證可行性。從模擬結果顯示,越多使用者使用共享式LoRa基地台時,整體網路覆蓋率與密度會越大,資料傳送成功率會有所提升,因此能夠幫助網路進行拓展,增加服務品質。;The Internet of Things (IoT) is currently the most popular terminology. The IoT not only connects to the Internet and assembles them, but also creates a lot of commercial innovations and new service values. In the future, it will create boundless opportunities for every aspect of business. In the early days, IoT did not have a long-distance, low-power consumption transmission for small amount of data. And there exists LoRa (Long Range) technology to improve this scenario now. LoRa technology is characterized by ISM transmission frequency below 1GHAz, receiving
    Sensitivity 0f -148 dbm, thereby achieves transmission distance up to 15 km, and has the advantage of low-power consumption. However, the initial setup requires higher cost, which restricts its widespread use. The main purpose of this paper is based on the concept of sharing economy for LoRa base stations, where everyone is a user and a base station. Wherever there are users, there are Lora network coverage. And so we may reduce the cost of building the base station dramatically.
    This paper applies the idea to pet tracking situations, and verifies the feasibility by experimental simulation. As the result, the more users share LoRa base stations, the higher its network coverage and density. It will raise the success rate of information transmission, and thereby helps to expand the network and improve service quality.
    Appears in Collections:[通訊工程研究所] 博碩士論文

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