An Efficient Approach for Vertical Handover between WLAN and EVDO

Khurram Javed, Umar Saleem, Khalid Hussain, M. Sher
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引用次数: 5

Abstract

The IEEE 802.11 based wireless LAN (WLAN) is most widely used for the real time communication such as Voice over IP (VOIP) video conferencing and etc. As the wireless internet access is increasing day by day by the combination of different small regions which are served by one operator or one Access Terminal. So there is the problem of mobility that a Mobile Node (MN) may move from one network to other network, also there is the problem of connectivity. To maintain the connectivity of a established call between two different networks using mobility management we proposed an efficient algorithm which maintain the real time connection as well as preventing the data loss during transition. We experiment our proposed algorithm by using a redundant buffer which store the data in transition mode and vanish the alternate data bits when the connection is establish with the network. The alternate data bit is also send for the same time as the time taken by the redundant buffer to disappear the data. This process saves our data in the transition time.
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一种有效的WLAN与EVDO垂直切换方法
基于IEEE 802.11的无线局域网(WLAN)被广泛应用于实时通信,如VOIP (Voice over IP)视频会议等。随着无线互联网接入的日益增加,不同的小区域由一个运营商或一个接入终端提供服务。移动节点(MN)可以从一个网络移动到另一个网络,因此存在移动性问题,也存在连接性问题。为了在两个不同网络之间保持已建立呼叫的连通性,我们提出了一种有效的算法,既能保持实时连接,又能防止传输过程中的数据丢失。我们使用一个冗余缓冲区来实验我们提出的算法,该缓冲区以过渡模式存储数据,并在与网络建立连接时消除备用数据位。备用数据位的发送时间也与冗余缓冲区消除数据所花费的时间相同。这个过程节省了我们的数据在转换时间。
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