Wireless communications are critical in the constantly changing environment of IoT and RFID technologies, where thousands of devices can be deployed across a wide range of scenarios. Whether connecting to cloud servers or local fog/edge devices, maintaining seamless communications is difficult, especially in demanding contexts like industrial warehouses or remote rural areas. Opportunistic networks, when combined with edge devices, provide a possible solution to this challenge. These networks enable IoT devices, particularly mobile devices, to redirect information as it passes via other devices until it reaches an edge node. Using different communication protocols, this paper investigates their effects on response times and total messages received for a opportunistic assisted RFID system. Specifically, this article compares two communications technologies (Bluetooth 5 and Wize) when used for building a novel Opportunistic Edge Computing (OEC) identification system based on low-cost Single-Board Computers (SBCs). For such a comparison, measurements have been performed for quantifying packet loss and latency. The tests consisted in two experiments under identical conditions and scenarios, with a node located roadside, transmitting identification information, and a node located inside a moving vehicle that was driven at varying vehicle speeds. The obtained results show for Bluetooth 5 average latencies ranging between 700 and 950 ms with packet losses between 7% and 27%, whereas for Wize the average delay as between 150 and 370 ms with packet losses between 20% and 52%.

翻译：在物联网与RFID技术不断演进的动态环境中，无线通信至关重要，成千上万的设备可部署于各类场景。无论是连接云端服务器还是本地雾计算/边缘设备，维持无缝通信都颇具挑战，在工业仓库或偏远农村等严苛环境中尤其如此。机会主义网络与边缘设备相结合，为此难题提供了可行的解决方案。这类网络使得物联网设备（特别是移动设备）能够通过其他设备中继信息，直至抵达边缘节点。本文通过采用不同通信协议，研究了它们对机会主义辅助RFID系统的响应时间及总接收消息量的影响。具体而言，本文比较了两种通信技术（蓝牙5与Wize）在构建基于低成本单板计算机的新型机会主义边缘计算识别系统时的表现。为此比较，我们进行了量化丢包率与延迟的测量。测试包含两个在相同条件与场景下进行的实验：一个节点部署于路边传输识别信息，另一个节点置于以不同车速行驶的车辆内部。实验结果表明：蓝牙5的平均延迟介于700至950毫秒之间，丢包率为7%至27%；而Wize的平均延迟介于150至370毫秒之间，丢包率为20%至52%。