摘要
针对现有的移动Ad hoc网络(MANET)资源互发现算法存在问题进行研究,提出用于MANET手机通信的移动资源互发现算法(MRDA)。该算法中每个节点都是等价的,使用组播和单播相结合来发送信息,可以更合理利用带宽,解决了已有MA-NET资源互发现算法采用广播方式带来的信息泛滥,占用带宽高,节点计算能力下降等问题。MRDA算法使用分布式哈希表(DHTs)存储路由表项信息,减小了网络总开销,增强了设备计算能力。同时,针对手机内存、电力受限等特点,对报文的格式进行了设计,简化了报文结构,采用动态广告报文发送间隔,有效减少了内存占用和网络传输代价。最后,建立手机终端节点之间通信的MANET环境,利用MRDA算法实现手机终端即时通信原型。
For the existing mobile Ad hoc networks （MANET） resource discovery algorithm improvements, we propose mobile resource discovery algorithm （MRDA） by which mobile phone can communicate in MANET. In this algorithm, each node has equivalent func- tion, uses both multicast and unicast combination to send a message to be more rational in the use of bandwidth, h solved information flooding, high bandwidth occupancy problems by broadcast, resulting in demoted ability of nodes computing and many other issues. MRDA uses distributed hash tables （DHTs） to store the routing table entry information, reducing the total network overhead. It en- hanced computing power of equipment as well. Meanwhile, on account of the phone＇s memory, power - constrained and other charac- teristics, the format of the datagram is designed to simplify the datagram structure and use dynamic advertising datagram transmission interval, effectively reducing the memory and network transmission cost. Finally, we established communication between the mobile terminal nodes in MANET environment and implement mobile phone communication prototype by MRDA.
出处
《微计算机应用》
2010年第4期31-38,共8页
Microcomputer Applications
基金
国家自然科学基金项目(No.60873193
No.60673160)
国家863高技术研究发展计划项目(No.2007AA01Z234)资助
