UnderWater+SDN论文之二

时间:2022-09-23 06:35:29

---- Software-defined underwater acoustic networking platform and its applications
source: Ad Hoc Networks 2015

acoustic as the primary modality. challenge: highly limited bandwidth, severe fading, and long propagation delay. (many MAC protocols and PHY layer techniques proposed)
This paper: present a research platform that allows developers to easily implement and compare their protocols in an underwater network and configure them at runtime.
software defined Underwater Acoustic Networking plaTform (UANT)

问题:水下传输带宽小、传输速率小、收发节点的能量小、收发的出错概率大、多径、噪音等各种问题,造成构建水下网络都非常困难。
论文:在之前的论文工作的基础上,1、增加应用和协议的实现、讨论频道分配协议的细节描述;2、实现并验证了频道分配协议和时间同步协议。

背景:GNU Radio and USRP

TinyOS —— 传感网络操作系统,NesC 语言, —— TOSSIM

UANT系统架构: 物理层、MAC 层、应用层、频道分配协议

实现: 实现的设备;对比实验:退避间隔、最小退避时间、冲突率。

思考:水下网络,本质上也是一种无线传感网络,比陆地的无线传感网络条件更恶劣。因此,mac层协议设计、退避机制、冲突避免、时间同步、节能等,传统无线传感网络ad hoc考虑关注的点,在水下网络都是重点设计的部分。