摘要:
A control device includes: a processor configured to: control calibration of sensing values in a sensor node group formed of sensor nodes each including a sensor and a wireless device and being capable of performing multi-hop communication; divide the sensor node group into a plurality of clusters such that each of the clusters includes at least one partial cluster including a relay node and a child node that performs wireless communication; collect an average of sensing values in each of the partial clusters from the relay node of each of the partial clusters; calculate a calibration reference value of each of the clusters from the collected averages of the respective partial clusters; and provide the calculated calibration reference value of each of the clusters to each of the clusters.
摘要:
A control device includes: a processor configured to: control a multihop communication path in a wireless network that includes a node group; when a first power storage speed of a target relay node in the node group is negative, calculate a first estimated time that is needed to reach a target power-storage value in a case where the target relay node is in a non-relay operating state; and in accordance with a length of the first estimated time calculated, change a state of the target relay node into the non-relay operating state or a stop state and change a state of another node, which is in the non-relay operating state, into a relay operating state.
摘要:
A system has a group of nodes that perform multi-hop communication therebetween and a communications apparatus that communicates with a node included in the group of nodes. The node adds to data transmitted by the node, a hop count updated each time the data is transferred by the multi-hop communication and a reference hop count for the data to be transferred from the node to the communications apparatus, and transmits the data. The communications apparatus, when receiving the data, compares the reference hop count and the hop count added to the data, and based on a result of comparison, determines whether failure has occurred at a given node in the group of nodes.
摘要:
A data processing apparatus that is installed in plural in an installation area and processes data of each installation site, includes a processor that based on a combination of identification information included in calibration information respectively transmitted by calibration nodes and self-identification generation information that is included in the calibration information and for identifying the data processing apparatus among the plural data processing apparatuses, generates self-identification information; a memory device that retains the self-identification information; and a wireless communications circuit that receives the calibration information from the calibration nodes and performs transmission and reception of the data with an adjacent data processing apparatus provided in the installation area.
摘要:
A system includes a CPU; an accelerator; a comparing unit that compares a first value that is based on a first processing time period elapsing until the CPU completes a first process and a second processing time period elapsing until the accelerator completes the first process, and a second value that is based on a state of use of a battery driving the CPU and the accelerator; and a selecting unit that selects any one among the CPU and the accelerator, based on a result of comparison by the comparing unit.
摘要:
A scheduling method includes acquiring first information, second information, and third information from a first terminal located in a service area of a first base station; determining based on the first information, the second information, and the third information, whether a first process assigned to the first terminal is to be collected; and assigning the first process to a second terminal located in the service area of the first base station, when at the determining the first process is determined to be collected.
摘要:
A data sharing method includes detecting by a first data processing apparatus that is among multiple data processing apparatuses that share data, any one among a shortage of available memory, a change in remaining battery power, a change in a relative positional distance of the first data processing apparatus to a second data processing apparatus that is among the data processing apparatuses, a change in a communication speed of communication with the second data processing apparatus, and an interruption of communication with the second data processing apparatus; and transmitting by the first data processing apparatus to a third data processing apparatus that is among the data processing apparatuses, a shared portion of the data saved in the first data processing apparatus.
摘要:
A multi-core processor system includes a multi-core processor that has plural core groups; and a storage device that stores a constraint on execution time for each application. A first identified core of the multi-core processor is configured to identify a constraint on execution time of a given application that is among the applications and for which an invocation instruction is received; determine whether the identified constraint meets a performance drop condition; assign the given application to a predetermined core of the multi-core processor, upon determining that the identified constraint meets the performance drop condition; and notify a second identified core of a core group among the core groups, of an assignment instruction for the given application, upon determining that the identified constraint does not meet the performance drop condition.
摘要:
A determining method executed by a processor includes obtaining distance information that indicates a distance between monitoring apparatuses disposed to encompass a given area in which wireless communications apparatuses are scattered; causing a wireless signal to be transmitted and received between the monitoring apparatuses by multi-hop communication among the wireless communications apparatuses; calculating an estimated distance between the monitoring apparatuses, based on a hop count of the wireless signal multi-hop communicated among the monitoring apparatuses; and making a determination concerning a vacant area in which none of the wireless communications apparatuses is present, based on a result of comparison of the distance indicated by the obtained distance information and the calculated estimated distance.
摘要:
A scheduling method is executed by a processor, and includes detecting a transition from a first process to a second process; acquiring from memory, an operating frequency and a CPU count for executing the second process; suspending a CPU under operation or starting a suspended CPU, based on the CPU count; and assigning the operating frequency to a CPU that is to execute the second process.