High-efficiency dual-LAN Terahertz WLAN MAC protocol based on spontaneous data transmission

doi:10.11772/j.issn.1001-9081.2023020250

Journal of Computer Applications ›› 2024, Vol. 44 ›› Issue (2): 519-525.DOI: 10.11772/j.issn.1001-9081.2023020250

• Network and communications • Previous Articles

High-efficiency dual-LAN Terahertz WLAN MAC protocol based on spontaneous data transmission

Zhi REN¹^,²^,³, Jindong GU¹^,²^,³(), Yang LIU¹^,²^,³, Chunyu CHEN¹^,²^,³

^1.School of Communication and Information Engineering，Chongqing University of Posts and Telecommunications，Chongqing 400065，China
^2.Key Laboratory of Mobile Communications Technology of Chongqing，Chongqing University of Posts and Telecommunications，Chongqing 400065，China
^3.Engineering Research Center of Mobile Communications of Ministry of Education，Chongqing University of Posts and Telecommunications，Chongqing 400065，China

Received:2023-03-09 Revised:2023-05-12 Accepted:2023-05-15 Online:2023-08-14 Published:2024-02-10
Contact: Jindong GU
About author:REN Zhi， born in 1971， Ph. D.， professor. His research interest include broadband wireless communication network.
LIU Yang， born in 1997， M. S. candidate. His research interest include Terahertz MAC protocol.
CHEN Chunyu， born in 1999， M. S. candidate. His research interest include Terahertz UAV LAN directional MAC protocol.
Supported by:
National Natural Science Foundation of China(61971080)

基于自发数据传输的高效双LAN太赫兹无线局域网MAC协议

任智¹^,²^,³, 古金东¹^,²^,³(), 刘洋¹^,²^,³, 陈春宇¹^,²^,³

^1.重庆邮电大学通信与信息工程学院，重庆 400065
^2.重庆邮电大学移动通信技术重庆市重点实验室，重庆 400065
^3.重庆邮电大学移动通信教育部工程研究中心，重庆 400065

通讯作者: 古金东
作者简介:任智（1971—），男，四川内江人，教授，博士，主要研究方向：宽带无线通信网络
刘洋（1997—），男，重庆人，硕士研究生，主要研究方向：太赫兹MAC协议
陈春宇（1999—），男，重庆人，硕士研究生，主要研究方向：太赫兹无人机局域网定向MAC协议。
基金资助:
国家自然科学基金资助项目(61971080)

Abstract

Abstract:

In the existing Dual LAN （Local Area Network） Terahertz Wireless LAN （Dual-LAN THz WLAN） related MAC （Medium Access Control） protocol， some nodes may repeatedly send the same Channel Time Request （CTRq） frame within multiple superframes to apply for time slot resources and idle time slots exist in some periods of network operation， therefore an efficient MAC protocol based on spontaneous data transmission SDTE-MAC （high-Efficiency MAC Protocol based on Spontaneous Data Transmission） was proposed. SDTE-MAC protocol enabled each node to maintain one or more time unit linked lists to synchronize with the rest of the nodes in the network running time， so as to know where each node started sending data frames at the channel idle time slot. The protocol optimized the traditional channel slot allocation and channel remaining slot reallocation processes， improved network throughput and channel slot utilization， reduced data delay， and could further improve the performance of Dual-LAN THz WLAN. The simulation results showed that when the network saturates， compared with the new N-CTAP （Normal Channel Time Allocation Period） slot resource allocation mechanism and adaptive shortening superframe period mechanism in the AHT-MAC （Adaptive High Throughout multi-pan MAC protocol）， the MAC layer throughput of the SDTE-MAC protocol was increased by 9.2%， the channel slot utilization was increased by 10.9%， and the data delay was reduced by 22.2%.

Key words: Terahertz wave, superframe structure, Wireless Local Area Network (WLAN), multi-hop communication, time slot allocation

摘要：

针对现有的双局域网（LAN）太赫兹无线局域网（Dual-LAN THz WLAN）相关介质访问控制（MAC）协议中存在的某些节点会在多个超帧内重复发送相同的信道时隙请求帧以申请时隙资源以及网络运行的一些时段存在空闲时隙等问题，提出一种基于自发数据传输的高效MAC协议——SDTE-MAC（high-Efficiency MAC protocol based on Spontaneous Data Transmission）。SDTE-MAC通过让各节点都维护一张或多张时间单元链表，使各节点与其余节点在网络运行时间上达到同步，从而获悉各节点应该在信道空闲时隙的什么位置开始发送数据帧，优化了传统的信道时隙分配和信道剩余时隙再分配的流程，提高了网络吞吐量和信道时隙利用率，降低了数据时延，能够进一步提升双LAN太赫兹无线局域网的性能。仿真结果表明，网络饱和时，相较于AHT-MAC（Adaptive High Throughout multi-pan MAC protocol）中的N-CTAP（Normal Channel Time Allocation Period）时段时隙资源分配新机制以及自适应缩短超帧时段机制，SDTE-MAC的MAC层吞吐量提升了9.2%，信道时隙利用率提升了10.9%，数据时延降低了22.2%。

关键词: 太赫兹波, 超帧结构, 无线局域网, 多跳通信, 时隙分配

CLC Number:

TP393

Zhi REN, Jindong GU, Yang LIU, Chunyu CHEN. High-efficiency dual-LAN Terahertz WLAN MAC protocol based on spontaneous data transmission[J]. Journal of Computer Applications, 2024, 44(2): 519-525.

任智, 古金东, 刘洋, 陈春宇. 基于自发数据传输的高效双LAN太赫兹无线局域网MAC协议[J]. 《计算机应用》唯一官方网站, 2024, 44(2): 519-525.

Figures/Tables 13

References 15

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英文缩写	英文全称	含义
	TIMESTAMP	发送Beacon时间
PNCC	PNC Count	PNC个数
TB	Timeout Beat	DEV连接
	PNC CAPABILITY	PNC能量

英文缩写	英文全称	含义
	TIMESTAMP	发送Beacon时间
PNCC	PNC Count	PNC个数
TB	Timeout Beat	DEV连接
	PNC CAPABILITY	PNC能量

英文缩写	英文全称	含义
PNID	PicoNet IDentifier	微微网ID号
SPNID	Superior PicoNet IDentifier	高级微微网ID号
TDC	Terminal Device Count	协调完成的网络关联DEV总数
DC	Device Count	DEV数
LBT	Last Beacon Time	最后一个Beacon完成时间
CET	CAP End Time	CAP结束时间
SFDUR	SuperFrame DURation	超帧时长
AL	ALignment	对齐信息
FL	FLag	标志位
TB	Timeout Beat	PNC连接值
BSC	Beacon Switch Count	Beacon切换数

英文缩写	英文全称	含义
PNID	PicoNet IDentifier	微微网ID号
SPNID	Superior PicoNet IDentifier	高级微微网ID号
TDC	Terminal Device Count	协调完成的网络关联DEV总数
DC	Device Count	DEV数
LBT	Last Beacon Time	最后一个Beacon完成时间
CET	CAP End Time	CAP结束时间
SFDUR	SuperFrame DURation	超帧时长
AL	ALignment	对齐信息
FL	FLag	标志位
TB	Timeout Beat	PNC连接值
BSC	Beacon Switch Count	Beacon切换数

仿真参数	数值
仿真场景大小/（m×m）	50×50
仿真运行时间/s	10
各LAN节点数	2，4，6，8，10
PNC数量	2
数据包产生间隔/s	0.01
数据包大小/Byte	8 192
数据传输速率/（Gb·s^-1）	10
超帧长度/s	0.01
节点缓存大小/MB	10
仿真随机（seed）值	75，125，175，225，275

High-efficiency dual-LAN Terahertz WLAN MAC protocol based on spontaneous data transmission

基于自发数据传输的高效双LAN太赫兹无线局域网MAC协议

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Figures/Tables 13

References 15

Related Articles 10

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Metrics

MAC协议	各LAN中DEV数
MAC协议	2	4	6	8	10
IEEE802.15.3	1.39	2.61	3.40	3.62	3.70
AHT-MAC	1.43	2.90	3.82	4.05	4.11
SDTE-MAC	1.49	3.11	4.20	4.40	4.49

MAC协议	各LAN中DEV的个数
MAC协议	2	4	6	8	10
IEEE802.15.3	0.015	0.021	0.037	0.061	0.093
AHT-MAC	0.013	0.018	0.030	0.052	0.072
SDTE-MAC	0.010	0.015	0.021	0.036	0.056

MAC协议	各LAN中DEV数
MAC协议	2	4	6	8	10
IEEE802.15.3	0.151	0.312	0.401	0.454	0.466
AHT-MAC	0.163	0.335	0.452	0.501	0.515
SDTE-MAC	0.170	0.364	0.503	0.557	0.571

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