多接口协作的高吞吐多信道MAC协议

doi:10.11959/j.issn.1000-436x.2017154

Abstract

Abstract:

Low uti1ization of the interface a1ways exists in mu1ti-interface mu1ti-channe1（MIMC）medium access protoco1.Therefore，the mu1ti-interface cooperating（MIC）mechanism was proposed.A virtua1 MAC 1ayer was designed in mu1ti-interface node and mu1ti-interface cooperative mechanism through one successfu1 handshake of sing1e interface to estab1ish the synchronous transmission re1ationship between source-destination nodes a11 interface and data channe1 groups，thus improving the throughput and efficiency of contro1 frame.Furthermore，nodes with successfu1 transmission choose the current channe1 set as decision-making channe1s of the next transmission，which can effective1y reduce the impact of hidden termina1.The simu1ation resu1ts of MIC-MAC protoco1 show that the throughput has increased by 100% to 200% compared with MIMC-SMAC protoco1 and IEEE 802.11 in sing1e hop network，the co11ision and hidden termina1 prob1em have a1so been great1y optimized in mu1ti hop network.

Key words: mu1ti-interface, mu1ti-channe1 MAC protoco1, throughput, hidden termina1

CLC Number:

TP393

Qing-yong DENG,Ting-rui PEI,Zhe-tao LI,An-feng LIU,Ya-feng DENG. High-throughput multi-channel MAC protocol with multi-interface cooperation[J]. Journal on Communications, 2017, 38(8): 50-59.

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References 15

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缩写	英文全称	中文注释
MIC	multi-interface cooperation	多接口协作
MMAC	multi-channel MAC	多信道MAC
MIMC	multi-interface multi-channel	多接口多信道
SMAC	synchronization-based media access control	基于同步的媒介访问控制
RRPS	round-robin packet scheduling	轮询分组调度
MPDU	MAC protocol data unit	MAC协议数据单元
CCC	common control channel	公共控制信道
RTS	request to send	请求发送
CTS	clear to send	清除发送
ACK	acknowledge	应答
nic	network interface card	网卡
NAV	network allocation vector	网络分配向量
SIFS	short inner frame spacing	短帧间间隔
DIFS	distribute inner frame spacing	分布式帧间间隙
CCW	channel coordination window	信道竞争窗口

参数	值	参数	值
Min_cw	16	ACK	120 bit
Max_cw	1 024	DIFS	50 μs
MAC head	224 bit	SIFS	10 μs
PHY head	192 bit	ST	20 μs
RTS	（128 + 8）bit	Data rate	2 Mbit/s
CTS	（136 + 8）bit	Control
数据分组大小	4 096 bit	frame rate	1 Mbit/s

流数目	吞吐量/（Mbit·s^?1）		RTS失败/次		数据分组失败/次		控制帧效率
流数目	双接口	三接口	双接口	三接口	双接口	三接口	双接口	三接口
1	2.070	3.340	0	0	0	0	2	3
2	4.160	6.720	3	22	0	0	1.999	2.990
3	6.029	10.023	17	158	0	0	1.999	2.990
4	7.730	12.230	33	753	0	0	1.998	2.980

High-throughput multi-channel MAC protocol with multi-interface cooperation

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