电子与信息学报
電子與信息學報
전자여신식학보
JOURNAL OF ELECTRONICS & INFORMATION TECHNOLOGY
2013年
5期
1076-1082
,共7页
自组织网络%多信道MAC%控制信道瓶颈%低控制开销
自組織網絡%多信道MAC%控製信道瓶頸%低控製開銷
자조직망락%다신도MAC%공제신도병경%저공제개소
Ad hoc network%Multi-channel MAC%Control channel bottleneck%Low Control Overheads (LCO)
针对Ad-hoc网络中多信道MAC机制引起的控制信道瓶颈问题和隐终端问题,该文提出一种低控制开销MAC协议(LCO-MAC).与基于信道使用表一类的MAC机制不同,LCO-MAC参考Meshhadany提出的RTS/CTS (Request To Send/Clear To Send)信道分配机制,将数据信道映射为帧中时隙,但不同的是LCO-MAC不限制RTS的发送时间,且一旦申请信道后即可发送数据.仿真结果表明,LCO-MAC 无需传输太多的控制信息用于预约信道,有效缓解了控制信道瓶颈问题和多信道隐终端问题,网络吞吐量也得到明显提升.
針對Ad-hoc網絡中多信道MAC機製引起的控製信道瓶頸問題和隱終耑問題,該文提齣一種低控製開銷MAC協議(LCO-MAC).與基于信道使用錶一類的MAC機製不同,LCO-MAC參攷Meshhadany提齣的RTS/CTS (Request To Send/Clear To Send)信道分配機製,將數據信道映射為幀中時隙,但不同的是LCO-MAC不限製RTS的髮送時間,且一旦申請信道後即可髮送數據.倣真結果錶明,LCO-MAC 無需傳輸太多的控製信息用于預約信道,有效緩解瞭控製信道瓶頸問題和多信道隱終耑問題,網絡吞吐量也得到明顯提升.
침대Ad-hoc망락중다신도MAC궤제인기적공제신도병경문제화은종단문제,해문제출일충저공제개소MAC협의(LCO-MAC).여기우신도사용표일류적MAC궤제불동,LCO-MAC삼고Meshhadany제출적RTS/CTS (Request To Send/Clear To Send)신도분배궤제,장수거신도영사위정중시극,단불동적시LCO-MAC불한제RTS적발송시간,차일단신청신도후즉가발송수거.방진결과표명,LCO-MAC 무수전수태다적공제신식용우예약신도,유효완해료공제신도병경문제화다신도은종단문제,망락탄토량야득도명현제승.
@@@@Considering the control channel bottleneck issue and hidden terminal issue for multi-channel MAC in Ad-hoc networks, a new multi-channel MAC with the Low Control Overhead (LCO-MAC) is proposed. Different from the multi-channel MAC mechanism based on the channel usage table, for LCO-MAC reference to the Request To Send/Clear To Send (RTS/CTS) channel assignment mechanism proposed by Meshhadany, each data channel is mapped to a time slot of the control section, but the difference is that LCO-MAC does not restrict the sending time of the RTS, and can send data once obtainning the channel. Simulation results show that LCO-MAC not needing too much control information for channel reservation provides an effective solution to the control channel bottleneck and multi-channel hidden terminal issue, the network throughput is also significantly enhanced.
