本文選題：即時通信 + 移動設(shè)備　； 參考：《中南大學(xué)》2014年碩士論文

【摘要】：摘要：移動互聯(lián)網(wǎng)的高速發(fā)展使得人們的網(wǎng)絡(luò)生活開始從桌面終端向移動終端遷移,即時通信作為目前的互聯(lián)網(wǎng)的核心應(yīng)用之一,在移動設(shè)備上被廣泛使用。即時通信協(xié)議XMPP協(xié)議基于XML語言,不僅能夠支持異構(gòu)系統(tǒng)之間的互聯(lián)互通,且具有很強的可擴(kuò)展性而被認(rèn)為是未來即時通信領(lǐng)域的主流協(xié)議。但XMPP協(xié)議本身是一個高耗能的協(xié)議,將其應(yīng)用于移動設(shè)備上時,會給電池的續(xù)航能力帶來較大的挑戰(zhàn)。 論文針對XMPP協(xié)議在移動設(shè)備上的場景,提出一種出席消息代理模型,通過代理服務(wù)器緩存出席更新消息,并根據(jù)緩存策略調(diào)整消息到達(dá)設(shè)備的時間序列,避免設(shè)備長時間處于耗能較高的狀態(tài)下工作,從而節(jié)省電池電量。由于出席消息代理會給出席消息帶來一定的延遲,延遲時間越長節(jié)省電量越多,但長時間的延遲將導(dǎo)致較差的用戶體驗。論文通過排隊論建立了數(shù)學(xué)模型,推導(dǎo)出延遲和省電量之間的關(guān)系,并通過實驗進(jìn)行驗證。實驗表明,無論移動設(shè)備上登錄單個還是多個XMPP客戶端,出席消息代理都能夠有效節(jié)省設(shè)備電量,特別在3G網(wǎng)絡(luò)下客戶端節(jié)省電量甚至達(dá)到56.5%。 其次,結(jié)合XMPP協(xié)議架構(gòu)的特點,本論文提出了一種基于XMPP協(xié)議的實時消息推送方案,并研發(fā)出移動醫(yī)療推送系統(tǒng)。該系統(tǒng)是由中南大學(xué)信息科學(xué)與工程學(xué)院與湘雅醫(yī)院合作,能夠為用戶提供體檢報告、門診結(jié)果、住院費用等醫(yī)療信息的實時推送與歷史記錄查詢。系統(tǒng)不僅能夠節(jié)省用戶時間,同時也能緩解醫(yī)院的接待壓力,具有一定的實用價值。圖21幅,表14個,參考文獻(xiàn)61篇。
[Abstract]:Absrtact: with the rapid development of mobile Internet, people's network life begins to migrate from desktop terminal to mobile terminal. As one of the core applications of Internet, instant messaging is widely used in mobile devices. Instant messaging protocol (XMPP) is based on XML, which not only supports the interconnection between heterogeneous systems, but also has strong scalability and is considered to be the mainstream protocol in the field of instant communication in the future. However, the XMPP protocol itself is a high energy consuming protocol. When it is applied to mobile devices, it will bring a great challenge to the battery's ability to live. Aiming at the scenario of XMPP protocol on mobile devices, this paper proposes a presence message broker model, which caches the participating update message through proxy server, and adjusts the time series of messages to the device according to the cache policy. Avoid the equipment working in the state of high energy consumption for a long time, thus saving battery power. The longer the delay time, the more energy saving, but the longer the delay will lead to poor user experience. In this paper, the mathematical model is established by queuing theory, and the relationship between delay and power saving is deduced and verified by experiments. The experimental results show that no matter the mobile devices log on to single or multiple XMPP clients, the presence of message agents can effectively save the power of the devices, especially in the 3G network, the client can save even 56.5. Secondly, considering the characteristics of XMPP protocol architecture, this paper proposes a real-time message push scheme based on XMPP protocol, and develops a mobile medical push system. The system, which is cooperated by the School of Information Science and Engineering of Central South University and Xiangya Hospital, can provide users with medical information such as medical examination report, outpatient results, hospitalization expenses and so on. The system can not only save user time, but also relieve the pressure of hospital reception. There are 21 figures, 14 tables and 61 references.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.04

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本文編號：1834393