Macroscopic Diffusion-Based Molecular Communication by Use of a Suspension of Relays

拟议项目的目的是开发和分析一种基于继电器悬浮的宏观扩散分子通信的新模型，即介质，特别是流体中的大量继电器。这一概念将首次在没有活性物质运输的情况下实现厘米和米尺度的分子通信。通过放弃主动传输，可以避免信号的扭曲，从而避免符号间的干扰，例如在层流中观察到的情况。神经细胞具有动作电位的触发和随后的不应期以及通过组织的兴奋波的发展，可作为中继细胞的生物学模型。对于这种行为的抽象模型，应确定有关数据传输的单元参数的适当范围和最佳值。相反，生物学过程的精确复制并不是有意的。该设置将被描述为一个随机模型，与文献中其他扩散方法相比，其随机性在于中继单元的随机分布位置，即重叠扩散过程的来源。此外，还应研究分子浓度波动和继电器电池参数随机变化的影响。与以前的方法相反，需要考虑大量的继电器单元，这对于在宏观距离上使用扩散是必要的，并且可以从具有离散继电器的模型过渡到连续模型。这样，符号“1”的传输就用介质中的激励波来表示。因此，除了主动传输和纯扩散之外，还需要引入第三种形式的分子数据传输。除了分析数据传输性能与系统参数的关系外，还应讨论在试验台实现模型的选项。

The aim of the proposed project is to develop and analyse a novel model for macroscopic diffusion-based molecular communication based on a suspension of relays, i.e, a large number of relays in a medium, particularly a fluid. This concept shall for the first time enable molecular communication on a centimetre and metre scale without active material transport. By waiving active transport, distortions of the signal and hence intersymbol interference, as observed for example in laminar flow, shall be avoided. Nerve cells, with the triggering of an action potential and a subsequent refractory period and with the development of an excitation wave through the tissue, serve as a biological model for the relay cells. For an abstract model of this behaviour, suitable ranges and optimal values of the cell parameters with respect to data transmission shall be determined. An exact reproduction of the biological processes, in contrast, is not intended. The setup will be described as a stochastic model, where the stochasticity, in contrast to other approaches for diffusion in literature, lies in the randomly distributed positions of the relay cells, i.e., the sources of the overlapping diffusion processes. Furthermore, the influence of a fluctuation of the molecule concentration and a stochastic variation of the parameters of the relay cell shall be investigated. In contrast to previous approaches, a large number of relay cells shall be considered, which is necessary to use diffusion over macroscopic distances, and shall enable the transition from a model with discrete relays to a continuum model. In this way, the transmission of a symbol ’1’ is represented by an excitation wave in the medium. Thus, in addition to active transport and a pure diffusion, a third form of molecular data transmission shall be introduced. In addition to the analysis of the data transmission performance in relationship to the system parameters, options for an implementation of the model in a testbed shall be discussed.