无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
2期
9-12,33
,共5页
定向天线%邻居发现%碰撞%OPNET仿真
定嚮天線%鄰居髮現%踫撞%OPNET倣真
정향천선%린거발현%팽당%OPNET방진
directional antennas%neighbor discovery%collision%OPNET simulation
在Ad Hoc网络中，定向天线的应用需要新的邻居发现算法来发现节点的邻居并建立链路。介绍了一种基于扫描的邻居发现算法，考虑了由于单个波束方向上有超过一个的邻居节点而造成的碰撞情况，通过仿真讨论在有碰撞情况和无碰撞情况的拓扑结构下，2种算法下已发现邻居个数与扫描时间的关系，证明改进后算法可在有碰撞的情况下有效地发现邻居，并针对不同的静默概率进行仿真，分析静默概率对邻居发现效率的影响。
在Ad Hoc網絡中，定嚮天線的應用需要新的鄰居髮現算法來髮現節點的鄰居併建立鏈路。介紹瞭一種基于掃描的鄰居髮現算法，攷慮瞭由于單箇波束方嚮上有超過一箇的鄰居節點而造成的踫撞情況，通過倣真討論在有踫撞情況和無踫撞情況的拓撲結構下，2種算法下已髮現鄰居箇數與掃描時間的關繫，證明改進後算法可在有踫撞的情況下有效地髮現鄰居，併針對不同的靜默概率進行倣真，分析靜默概率對鄰居髮現效率的影響。
재Ad Hoc망락중，정향천선적응용수요신적린거발현산법래발현절점적린거병건립련로。개소료일충기우소묘적린거발현산법，고필료유우단개파속방향상유초과일개적린거절점이조성적팽당정황，통과방진토론재유팽당정황화무팽당정황적탁복결구하，2충산법하이발현린거개수여소묘시간적관계，증명개진후산법가재유팽당적정황하유효지발현린거，병침대불동적정묵개솔진행방진，분석정묵개솔대린거발현효솔적영향。
The application of directional antennas in ad hoc networks requires new neighbor discovery algorithm for setting up links between nodes and their neighbors. This paper proposes a scan-based algorithm for neighbor discovery, taking into account the collision in condition that more than one node exists in single directional beam.Based on simulation,the two algorithms are discussed in the topology structure with or without collisions,and the relation between accumulated probability and scan time of neighbor discovery. The simulation results indicate the superiority of the improved algorithm in finding neighbors.The simulation is done for different silent probability to analyze the impact of silent probability on discovery efficiency.
