A Review on Sensor Network Issues and Robotics <s> Mobile Sensor Networks <s> Observing microclimate changes is one of the most popular applications of wireless sensor networks. However, some target environments are often too dangerous or inaccessible to humans or large robots and there are many challenges for deploying and maintaining wireless sensor networks in those unfriendly environments. This paper presents a mobile sensor network system for solving this problem. The system architecture, the mobile node design, the basic behaviors and advanced network capabilities have been investigated respectively. A wheel-based robotic node architecture is proposed here that can add controlled mobility to wireless sensor networks. A testbed including some prototype nodes has also been created for validating the basic functions of the proposed mobile sensor network system. Motion performance tests have been done to get the positioning errors and power consumption model of the mobile nodes. Results of the autonomous deployment experiment show that the mobile nodes can be distributed evenly into the previously unknown environments. It provides powerful support for network deployment and maintenance and can ensure that the sensor network will work properly in unfriendly environments. <s> BIB001 </s> A Review on Sensor Network Issues and Robotics <s> Mobile Sensor Networks <s> More and more researches focus on the development of mobile wireless sensor networks (MWSNs) due to the favorable advantages and applications of MWSNs. However, there is not a comprehensive survey about the research issues on MWSNS for the state of art. In this paper, we survey the communication and data management issues on MWSNs and provide extensible research directions of MWSNs. <s> BIB002 </s> A Review on Sensor Network Issues and Robotics <s> Mobile Sensor Networks <s> Researchers have designed intrusion recovery protocols in Wireless Sensor Networks (WSN) with the aim of restoring compromised services and promoting a secure and reliable environment in WSNs. Currently, evaluation frameworks in WSNs have been proposed in a generic security context and do not constitute a representative assessment of intrusion recovery protocols. This paper proposes an evaluation methodology to aid the evaluation and comparison of intrusion recovery protocols in WSNs. The methodology defines the intrusion recovery protocol aspects that should be evaluated using a number of evaluation criteria and guides researchers in identifying the evaluation direction they should follow. <s> BIB003
Mobile sensor networks are a class of networks where small sensing devices move in a space over time to collaboratively monitor physical and environmental conditions BIB002 . The research on mobile sensor networks has been plenty worldwide. For MSN, there could be a lot of valuable application with attached sensors as well as capabilities such as locomotion, environmental information sensing, and dead reckoning. The architecture of MSNs can be divided into node, server, and client layer BIB001 . The job of the node layer is to acquire all sorts of data, as it is directly embedded into physical world. This layer also consists of all the static as well as mobile sensor nodes. Server layer comprises single board computer running server software or a personal computer. The client layer devices can be any smart terminals, these devices also include remote and local clients. Mobility is an unrealistic or undesirable characteristic of sensor nodes as it can address the objective challenges BIB003 . Research issues on Mobile sensor networks can be analyzed into two aspects BIB002 : communication issues and data management issues. Our work is focused on communication issues which include coverage and localization issues ( Figure 6 ).