BROADCAST SCHEDULING WITH MIMO LINKS IN MULTI-HOP AD HOC NETWORKS  

作　　者：Zhang Guanghui Li Jiandong Zhao Min Li Changle 

机构地区：[1]State Key Lab. of ISN, Information Science Inst., Broadband Wireless Communications Lab. Xidian University, Xi＇an 710071, China

出　　处：《Journal of Electronics(China)》2007年第4期477-483,共7页电子科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.6037 2048);Microsoft Research Asia,TRAP0YT,Natural Science Foundation of China(No.60496 316);China"863"Project on cognitive radio(2005AA123910),M0E(104171);Research Fund for the Doctoral Program of Higher Education(20050701007).

摘　　要：As the current medium access control protocols with Multiple Input Multiple Output （MIMO） links only bear point to point service, broadcast scheduling algorithm in ad hoc networks with MIMO links is proposed. The key to the proposed broadcast scheduling algorithm is the time slot scheduling algorithm which guarantees collisi~）n-free transmissions for every node and the mini- mum frame length. The proposed algorithm increases the simultaneous transmissions of MIMO links efficiently. Due to the interference null capacity of MIMO links, the interference node set of each node can decrease from two-hop neighbors to one-hop neighbors possibly. Simulation results show that our algorithm can greatly improve network capacity and decrease average packet delay.As the current medium access control protocols with Multiple Input Multiple Output (MIMO) links only bear point to point service, broadcast scheduling algorithm in ad hoc networks with MIMO links is proposed. The key to the proposed broadcast scheduling algorithm is the time slot scheduling algorithm which guarantees collision-free transmissions for every node and the mini- mum frame length. The proposed algorithm increases the simultaneous transmissions of MIMO links efficiently. Due to the interference null capacity of MIMO links, the interference node set of each node can decrease from two-hop neighbors to one-hop neighbors possibly. Simulation results show that our algorithm can greatly improve network capacity and decrease average packet delay.

关 键 词：Multiple Input Multiple Output （MIMO） Time Division Multiple Access （TDMA） BROADCAST Multihop ad hoc network 

分 类 号：TN915[电子电信—通信与信息系统]