Department of Electrical and Computer Engineering, COMSATS University Islamabad-Attock Campus, Attock 43600, Pakistan.
Department of Electrical Engineering, COMSATS University Islamabad Wah Campus, Wah 47040, Pakistan.
Sensors (Basel). 2020 Jan 19;20(2):548. doi: 10.3390/s20020548.
In post-disaster scenarios, such as after floods, earthquakes, and in war zones, the cellular communication infrastructure may be destroyed or seriously disrupted. In such emergency scenarios, it becomes very important for first aid responders to communicate with other rescue teams in order to provide feedback to both the central office and the disaster survivors. To address this issue, rapidly deployable systems are required to re-establish connectivity and assist users and first responders in the region of incident. In this work, we describe the design, implementation, and evaluation of a rapidly deployable system for first response applications in post-disaster situations, named RDSP. The proposed system helps early rescue responders and victims by sharing their location information to remotely located servers by utilizing a novel routing scheme. This novel routing scheme consists of the Dynamic ID Assignment (DIA) algorithm and the Minimum Maximum Neighbor (MMN) algorithm. The DIA algorithm is used by relay devices to dynamically select their IDs on the basis of all the available IDs of networks. Whereas, the MMN algorithm is used by the client and relay devices to dynamically select their next neighbor relays for the transmission of messages. The RDSP contains three devices; the client device sends the victim's location information to the server, the relay device relays information between client and server device, the server device receives messages from the client device to alert the rescue team. We deployed and evaluated our system in the outdoor environment of the university campus. The experimental results show that the RDSP system reduces the message delivery delay and improves the message delivery ratio with lower communication overhead.
在灾后场景中，例如洪水、地震和战区，蜂窝通信基础设施可能会被破坏或严重中断。在这种紧急情况下，急救响应人员与其他救援团队进行通信以向中央办公室和灾难幸存者提供反馈变得非常重要。为了解决这个问题，需要快速部署系统来重新建立连接，并为事件区域的用户和急救响应人员提供帮助。在这项工作中，我们描述了一种名为 RDSP 的用于灾后紧急响应应用的快速部署系统的设计、实现和评估。该系统通过利用新颖的路由方案帮助早期救援响应者和受害者共享其位置信息到远程服务器。该新颖的路由方案由动态 ID 分配（DIA）算法和最小最大邻居（MMN）算法组成。中继设备使用 DIA 算法根据所有可用网络的 ID 动态选择其 ID。而 MMN 算法则由客户端和中继设备用于动态选择下一个邻居中继以传输消息。RDSP 包含三个设备；客户端设备将受害者的位置信息发送到服务器，中继设备在客户端和服务器设备之间中继信息，服务器设备从客户端设备接收消息以提醒救援团队。我们在大学校园的户外环境中部署和评估了我们的系统。实验结果表明，RDSP 系统减少了消息传递延迟并提高了消息传递率，同时降低了通信开销。
