Low Latency and High Reliability Multi-PAN Terahertz Wireless Personal Area Networks MAC Protocol

QI Junyi; REN Zhi; ZHANG Weiye; YANG Jianjun

doi:10.13756/j.gtxyj.2026.240179

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Low Latency and High Reliability Multi-PAN Terahertz Wireless Personal Area Networks MAC Protocol

更新时间：2026-04-20

- Low Latency and High Reliability Multi-PAN Terahertz Wireless Personal Area Networks MAC Protocol
- Study on Optical Communications Issue 2, (2026)
- 作者机构：
  
  a.重庆邮电大学　通信与信息工程学院，重庆　400065
  b.重庆邮电大学　移动通信技术重庆市重点实验室，重庆　400065
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2026.240179
  CLC： TN92
- Received：16 August 2024，
  
  Revised：2024-09-12，
  
  Published：10 April 2026
- 稿件说明：
移动端阅览
祁君易，任智，张伟业，等. 低时延高可靠的多PAN太赫兹无线个域网MAC协议[J]. 光通信研究，2026(2): 240179.

Qi J Y, Ren Z, Zhang W Y, et al. Low Latency and High Reliability Multi-PAN Terahertz Wireless Personal Area Networks MAC Protocol[J]. Study on Optical Communications, 2026(2): 240179.
祁君易，任智，张伟业，等. 低时延高可靠的多PAN太赫兹无线个域网MAC协议[J]. 光通信研究，2026(2): 240179. DOI： 10.13756/j.gtxyj.2026.240179.

Qi J Y, Ren Z, Zhang W Y, et al. Low Latency and High Reliability Multi-PAN Terahertz Wireless Personal Area Networks MAC Protocol[J]. Study on Optical Communications, 2026(2): 240179. DOI： 10.13756/j.gtxyj.2026.240179.

摘要

目的

为了解决现有分布式太赫兹无线个域网（WPAN）协议中存在的跨个域网（PAN）数据传输时延较大和边缘节点传输干扰的解决方案在常规信道时间分配时段（N-CTAP）存在资源分配不均衡和节点状态汇报机制不完善的问题，文章提出了一种低时延高可靠的多PAN太赫兹WPAN介质访问控制（MAC）协议——LLHR-MAC。

方法

文章所提协议首先对现有太赫兹WPAN协调超帧结构进行优化，该方法通过降低网桥节点为转发数据申请时隙的等待时间，进而减少跨PAN数据传输接入时延；然后对现有边缘节点时隙分配机制进行改进来解决多PAN数量情况下的时隙分配N-CTAP时段资源浪费问题；最后，提出节点通过利用空闲的信标帧队列时段（BAP）资源向微微网协调器（PNC）汇报自身状态信息来解决由于节点状态变化PNC节点未能及时正确分配可靠时隙资源的问题。

结果

通过使用OPNET软件进行仿真模拟，验证了LLHR-MAC协议在传输成功率、数据帧平均接入时延、MAC层吞吐量和时隙利用率指标上与现有协议相比均有一定提升。

结论

由仿真结果可知，文章所提协议可有效提高多PAN太赫兹无线网络的网络性能，并对未来针对更多数量PAN环境下的网络性能优化具有实际意义。

Abstract

Objective

To address the problems that the existing solutions for high cross-Personal Area Network (PAN) data transmission latency and edge node transmission interference in distributed terahertz Wireless Personal Area Network (WPAN) protocols suffer from unbalanced resource allocation and inadequate node status reporting mechanism during the Normal Channel Time Allocation Period (N-CTAP)

this paper proposes a low-latency and high-reliability multi-PAN terahertz WPAN Medium Access Control (MAC) protocol

LLHR-MAC.

Methods

This protocol first optimizes the coordinated superframe structure of existing terahertz WPAN. This method reduces the waiting time for bridge nodes to apply for time slots for forwarding data

thereby reducing the cross PAN data transmission access delay. Then

the existing edge node slot allocation mechanism is improved to solve the slot allocation problem in the case of multiple PAN quantities and the waste of N-CTAP slot resources. Finally

it is proposed that nodes report their own status information to the Piconet Coordinator (PNC) by utilizing the resources of the idle Beacon Alignment Period (BAP)

so as to solve the problem that the PNC fails to allocate reliable time slot resources timely and accurately due to the change of node status.

Results

By using OPNET software for simulation

it was verified that the LLHR-MAC protocol has certain improvements in transmission success rate

average access delay of data frames

MAC layer throughput

and time slot utilization compared to existing protocols.

Conclusion

According to the simulation results

the protocol proposed in this paper can significantly enhance the network performance of multi-PAN terahertz wireless networks. It also has practical significance for the optimization of network performance in environments with a larger number of personal area networks in the future.

关键词

Keywords

references

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