Network flows: theory, algorithms, and applications
Network flows: theory, algorithms, and applications
Research challenges in wireless networks of biomedical sensors
Proceedings of the 7th annual international conference on Mobile computing and networking
Proceedings of the 10th international conference on Architectural support for programming languages and operating systems
Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
GPS-Free Positioning in Mobile ad-hoc Networks
HICSS '01 Proceedings of the 34th Annual Hawaii International Conference on System Sciences ( HICSS-34)-Volume 9 - Volume 9
RTSS '04 Proceedings of the 25th IEEE International Real-Time Systems Symposium
Energy Efficient Multi-Hop Polling in Clusters of Two-Layered Heterogeneous Sensor Networks
IPDPS '05 Proceedings of the 19th IEEE International Parallel and Distributed Processing Symposium (IPDPS'05) - Papers - Volume 01
Data collection, storage, and retrieval with an underwater sensor network
Proceedings of the 3rd international conference on Embedded networked sensor systems
Using predictable observer mobility for power efficient design of sensor networks
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Multiple controlled mobile elements (data mules) for data collection in sensor networks
DCOSS'05 Proceedings of the First IEEE international conference on Distributed Computing in Sensor Systems
Crash faults identification in wireless sensor networks
Computer Communications
Fast and energy efficient sensor data collection by multiple mobile sinks
Proceedings of the 5th ACM international workshop on Mobility management and wireless access
Efficient data propagation strategies in wireless sensor networks using a single mobile sink
Computer Communications
Improving the Data Delivery Latency in Sensor Networks with Controlled Mobility
DCOSS '08 Proceedings of the 4th IEEE international conference on Distributed Computing in Sensor Systems
Speed control and scheduling of data mules in sensor networks
ACM Transactions on Sensor Networks (TOSN)
Path Planning of Data Mules in Sensor Networks
ACM Transactions on Sensor Networks (TOSN)
Data Collection in Wireless Sensor Networks with Mobile Elements: A Survey
ACM Transactions on Sensor Networks (TOSN)
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In this paper, we propose a new data gathering mechanism for large scale multihop sensor networks. A mobile data observer, called SenCar, which could be a mobile robot or a vehicle equipped with a powerful transceiver and battery, works like a mobile base station in the network. SenCar starts the data gathering tour periodically from the static data processing center, traverses the entire sensor network, gathers the data from sensors while moving, returns to the starting point, and finally uploads data to the data processing center. Unlike SenCar, sensors in the network are static, and can be made very simple and inexpensive. They upload sensing data to SenCar when SenCar moves close to them. Since sensors can only communicate with others within a very limited range, packets from some sensors may need multihop relays to reach SenCar. We first show that the moving path of SenCar can greatly affect the network lifetime. We then present heuristic algorithms for planning the moving path/circle of SenCar and balancing traffic load in the network. We show that by driving SenCar along a better path and balancing the traffic load from sensors to SenCar, the network lifetime can be prolonged significantly. Our simulation results demonstrate that the proposed data gathering mechanism can greatly prolong the network lifetime compared to a network which has only a static observer, or a network in which mobile observer can only move along straight lines.