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In wireless sensor networks, the existing real-time routing protocols for stationary sinks exploit a spatiotemporal approach, utilizing the delivery speed based on the end-to-end distance to fulfill the desired time deadline. This approach cannot be directly applied to a mobile sink since the distance can be varied depending on its movement. That is, the delivery speed cannot be determined without...
To support a group of mobile sinks in wireless sensor networks, region-based routing protocols by using a single entity nature have been proposed. They periodically register the region location information of the mobile sink group and exploit flooding for the data delivery within the region. However, they have a data delivery failure problem for some sinks due to the asynchrony between the registered...
In wireless sensor networks, a mobile sink group have geographically collective movement and member sinks of the group try to get same data to execute a communal mission. In order to support the mobility for such groups, it is needed to get the current location of a mobile sink group and then to offer the location to a source. Previous works for mobile sink groups provide region information of a sink...
There have been proposed many data dissemination protocols which use routing structures dependent on sinks or events in wireless sensor networks. However, as many mobile sinks and events exist in the network, such protocols are not energy-efficient due to frequent reconstructions of routing structures. Thus, in this paper, to provide the scalability and mobility of sinks and events, we propose new...
In wireless sensor networks, many studies on data dissemination to individual mobile sinks traditionally rely on a strategy that consists of a virtual infrastructure to serve current location of the mobile sinks and a per-sink foot-print chaining mechanism to support local mobility after location update. To adapt the strategy for supporting mobile sink groups, it might be simply considered to exploit...
In wireless sensor applications such as disaster recovery and military actions, the behavior of mobile sinks is characterized by group features. A number of mobile sinks move together in a group manner, and mobile sinks in the group stay closely and randomly move within a geographically restricted region. Recently, many communication schemes have been suggested to reflect the properties of the mobile...
Increasing a functional lifetime of a network is utmost important criterion in Wireless Sensor Networks (WSNs) because of limited energy resource of nodes. Since, a functional lifetime requires either all or a certain percentage of nodes to be alive altogether, energy consumption balancing is important. Energy consumption balancing (ECB) property ensures that the average energy dissipation per sensor...
In wireless sensor networks, with respect to a desired time deadline real-time data dissemination schemes achieve that by a spatiotemporal communication approach forwarding data from a source to a destination with a delivery speed. The delivery speed is typically obtained from both the static distance from the source to the destination and the interval of the time deadline. However, in case of real-time...
Geographic routing has been considered as an efficient, simple, and scalable routing protocol for wireless sensor networks since it exploits pure location information to route data packets toward a static sink. Recently, a number of research works have shown that mobile sinks can achieve high energy efficiency and load balance than static ones. To support sink mobility, the location of a mobile sink...
An energy efficient multi hop sensor network cannot avoid the energy hole problem, which is the rapid decrease in the energy of nodes around the sink. Also as a sensor network has a limited node resources and unexpected changes of external environment, its nodes should show energy efficiency, reliable data transmission, and topological adaptation to the change of external environment. This study proposes...
In wireless sensor networks, studies in terms of data dissemination to individual mobile sinks traditionally rely on a strategy that consists of a virtual infrastructure to service current location of the sinks and per-sink foot-print chaining to support local mobility after location update. To adapt the strategy for supporting mobile sink groups, it might be simply considered to use a representative...
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