【摘要】：移動衛(wèi)星網(wǎng)絡(luò)因具有覆蓋區(qū)域廣、通信延時低等優(yōu)勢受到廣泛關(guān)注,當前有大量研究旨在開發(fā)IP協(xié)議的組網(wǎng)技術(shù),并將其與地面IP網(wǎng)絡(luò)融合。融合網(wǎng)絡(luò)的挑戰(zhàn)之一,即為衛(wèi)星移動性,用戶在衛(wèi)星網(wǎng)絡(luò)中的接入點頻繁切換導(dǎo)致移動管理問題,而現(xiàn)有的移動IP技術(shù)不能高效支持衛(wèi)星網(wǎng)絡(luò)移動切換。為了高效支持移動切換,在衛(wèi)星網(wǎng)絡(luò)中應(yīng)用標地分離思想,在標地分離的架構(gòu)下研究切換管理問題;用映射服務(wù)系統(tǒng)對終端進行位置管理,在移動切換中由新接入衛(wèi)星網(wǎng)關(guān)和終端的標志為主要信息在原衛(wèi)星中形成通告轉(zhuǎn)發(fā)表。仿真結(jié)果表明,相對移動IP技術(shù),該方法有明顯優(yōu)勢。將其應(yīng)用于衛(wèi)星網(wǎng)絡(luò)時可以降低切換延時,減少大量的綁定更新開銷或是次優(yōu)路由,提升系統(tǒng)的性能和可擴展性。
[Abstract]:Mobile satellite network has been paid more and more attention because of its wide coverage area and low communication delay. At present, there are a lot of research aimed at developing the networking technology of IP protocol and integrating it with the ground IP network. One of the challenges of integrated network is satellite mobility. Frequent handover of access points in satellite networks leads to mobile management problems, but the existing mobile IP technology can not efficiently support mobile switching of satellite networks. In order to support mobile handover efficiently, the switching management problem is studied under the framework of landmark separation by applying the idea of landmark separation in satellite network, and the position management of terminal is managed by mapping service system, and the notification forwarding table is formed in the original satellite with the main information of new access satellite gateway and terminal as the main information in mobile switching. The simulation results show that this method has obvious advantages over mobile IP technology. When it is applied to satellite network, it can reduce the handover delay, reduce a large number of binding update overhead or suboptimal routing, and improve the performance and scalability of the system.
【作者單位】： 國防科學(xué)技術(shù)大學(xué)計算機學(xué)院;
【基金】：國家自然科學(xué)基金(61103182,61379147)
【分類號】：TN927.2

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