UnderWater+SDN论文之二

---- 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、收发的出错几率大、多径、噪音等各类问题，形成构建水下网络都很是困难。
论文：在以前的论文工做的基础上，一、增长应用和协议的实现、讨论频道分配协议的细节描述；二、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 —— 传感网络操做系统，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。所以，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。