计算机技术与发展
計算機技術與髮展
계산궤기술여발전
COMPUTER TECHNOLOGY AND DEVELOPMENT
2015年
2期
64-68,73
,共6页
分簇Ad Hoc网络%路由发现%CBRP协议%接收信号强度%邻居节点表
分簇Ad Hoc網絡%路由髮現%CBRP協議%接收信號彊度%鄰居節點錶
분족Ad Hoc망락%로유발현%CBRP협의%접수신호강도%린거절점표
clustering Ad Hoc network%route discovery%CBRP%RSSI%neighbor node table
针对分簇结构Ad Hoc网络场景下的路由问题，提出一种基于接收信号强度( RSSI)和邻居先验信息的按需路由发现方案。该方案根据网络的分簇特点，在路由发现RREQ广播中，考虑节点间RSSI和中继节点业务负载情况，引入随机延时退避转发机制，综合判断是否转发RREQ报文，以解决场景中“广播风暴”引起的路由开销问题、优化路由发现的质量。仿真结果表明，与CBRP协议路由发现的性能相比，该方案大大降低了路由发现过程中控制包的开销，缩短了路由发现的时延，总体提高了网络性能。
針對分簇結構Ad Hoc網絡場景下的路由問題，提齣一種基于接收信號彊度( RSSI)和鄰居先驗信息的按需路由髮現方案。該方案根據網絡的分簇特點，在路由髮現RREQ廣播中，攷慮節點間RSSI和中繼節點業務負載情況，引入隨機延時退避轉髮機製，綜閤判斷是否轉髮RREQ報文，以解決場景中“廣播風暴”引起的路由開銷問題、優化路由髮現的質量。倣真結果錶明，與CBRP協議路由髮現的性能相比，該方案大大降低瞭路由髮現過程中控製包的開銷，縮短瞭路由髮現的時延，總體提高瞭網絡性能。
침대분족결구Ad Hoc망락장경하적로유문제，제출일충기우접수신호강도( RSSI)화린거선험신식적안수로유발현방안。해방안근거망락적분족특점，재로유발현RREQ엄파중，고필절점간RSSI화중계절점업무부재정황，인입수궤연시퇴피전발궤제，종합판단시부전발RREQ보문，이해결장경중“엄파풍폭”인기적로유개소문제、우화로유발현적질량。방진결과표명，여CBRP협의로유발현적성능상비，해방안대대강저료로유발현과정중공제포적개소，축단료로유발현적시연，총체제고료망락성능。
A scheme of reactive route discovery is proposed based on RSSI and neighbor priori-knowledge,aiming at routing problem of the clustering Ad Hoc scenario. Based on cluster network feature,this scheme considers the RSSI between nodes and traffic-load of relay nodes during RREQ broadcast,and introduces the delay back-off forwarding mechanism to comprehensively determine whether to for-ward RREQ packet,solving the routing overhead problem caused by broadcast storm and optimizing performance of route discovery. Sim-ulation results show that compared with performance of protocol CBRP,the scheme significantly reduces the route discovery control over-head and shortens the discovery delay,improving overall network performance.
