Zero-wire

Abstract

The performance dichotomy between wired and wireless networks for the Internet of Things primarily arises from the inherent complexity and inefficiency of networking abstractions such as routing, medium access control and store-and-forward packet switching. This paper aims to enable a new class of latency-sensitive applications by breaking all three of these abstractions to deliver a performance envelope that resembles that of a wired bus in terms of deterministic latency and throughput. The essence of this approach is a novel networking paradigm for optical wireless communication, referred to as a symbol-synchronous bus, wherein a mesh of nodes concurrently transmit LED-based signals. This paper realises the paradigm within a platform called Zero-Wire and evaluates it on a 25-node testbed under laboratory conditions. Key end-to-end performance measurements on this physical prototype include 19 kbps of contention-agnostic goodput, interface-level latency under 1 ms for two-byte frames across four hops, jitter on the order of 10s of µs, and a base reliability of 99%. These first results indicate a bright future for the under-explored area of optical wireless mesh networks in delivering ubiquitous connectivity through a simple and low-cost physical layer.

[Retracted] Low‐Latency and High‐Concurrency 5G Wireless Sensor Network Assists Innovation in Ideological and Political Education in Colleges and Universities

“…First, they gave three definitions of nodes: (1) the concentration of nodes, which is measured by the number of neighbor nodes of the current node; (2) the energy level of the node, that is, the remaining energy value of the current node; (3) the political education cycle measured by the distance between the node and the geometric center of the cluster. They have studied the calculation method of the aggregation function on the sensor network, proposed a tree construction algorithm for energy-saving calculation aggregation, and proved through experiments that the wireless communication mechanism has a great influence on the performance of the aggregation calculation [19][20][21]. Considering the real-time requirements of wireless sensor networks, researchers use the shortest path tree to collect data.…”

Analysis on current opto-electronic transmission research and its materials with new perspectives

“…For outdoor communication devices, dust, moisture and acidity environment undermine the stability of circuits, and the selection of sealed, airtight sensors with mechanically and chemically stable coating materials is crucial. Innovative signal transmitting network structure has great potential to improve the response speed and communication rate of next-generation wireless systems [12]. For modulators and wave guides, materials and structures should possess high thermal conductivity in order to minimize impact from heat due to dielectric loss.…”