DATA COLLECTING DEVICE, COMPUTER READABLE MEDIUM, AND DATA COLLECTING SYSTEM

• US 20120185560A1
• Filed: 12/06/2011
• Published: 07/19/2012
• Est. Priority Date: 01/13/2011
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: MATSUZAWA, Shigeo, ITO, Toshio, MERA, Keisuke, MAEGAWA, Tomonori, KANEKO, Yu
• Granted Patent: US 8,984,169 B2
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 43/022 by sampling
• CPC Class Codes: H04L 43/08 Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• CPC Class Codes: H04L 43/0864 Round trip delays
• CPC Class Codes: H04L 67/62 Establishing a time schedule for servicing the requests

Abstract

There is provided a data collecting device configured to collect data from a plurality of nodes. An inquiry transmitting unit transmits inquiry messages to request transmission of the data to the nodes, respectively. A response receiving unit receives response messages including the data from the nodes, respectively. A reception scheduler generates a reception schedule of the response messages from the nodes based on request information indicating data collection condition from the nodes. A transmission scheduler generates a transmission schedule of the inquiry messages based on the reception schedule and characteristics of communication with the nodes. The inquiry transmitting unit transmits the inquiry messages to the nodes, respectively, based on the transmission schedule.

Claims

1. A data collecting device configured to collect data from a plurality of nodes, comprising:

an inquiry transmitting unit configured to transmit inquiry messages to request transmission of the data to the nodes, respectively;

a response receiving unit configured to receive response messages including the data from the nodes, respectively;

a reception scheduler configured to generate a reception schedule of the response messages from the nodes based on request information indicating data collection condition from the nodes; and

a transmission scheduler configured to generate a transmission schedule of the inquiry messages based on the reception schedule and characteristics of communication with the nodes;

wherein

the inquiry transmitting unit transmits the inquiry messages to the nodes, respectively, based on the transmission schedule.

2. The device according to claim 1, wherein

the transmission scheduler calculates a distribution of expected receiving time of the response messages based on the characteristics of communication with the nodes and generates the transmission schedule so that the distribution of the expected receiving time is smoothed in a direction of time.

3. The device according to claim 1, further comprising

a response reception request perceiving unit configured to perceive whether contents of the request information have been changed;

wherein

the reception scheduler re-generates the reception schedule if the contents of the request information are changed; and

the transmission scheduler generates the transmission schedule based on the re-generated reception schedule.

4. The device according to claim 1, further comprising

a first communication characteristic perceiving unit configured to perceive whether the characteristics of communication with the nodes has been changed;

wherein

the transmission scheduler re-generates the transmission schedule based on the changed characteristics of the communication if the characteristics of the communication with at least one of the nodes is changed.

5. The device according to claim 1, wherein

the transmission scheduler transmits an instruction to change the reception schedule to the reception scheduler if a transmission schedule that satisfies the reception schedule cannot be generated;

and

the reception scheduler changes the reception schedule in accordance with the instruction to change the reception schedule.

6. The device according to claim 5, wherein

the instruction to change the reception schedule includes

an identifier of the node for which transmitting time could not be determined among the nodes and

a candidate of a receiving time range to receive the response message from the node.

7. The device according to claim 1, further comprising

a second communication characteristic perceiving unit configured to measure response time of the nodes and calculate the characteristics of the communication based on the measured response time;

wherein

the transmission scheduler uses the characteristics of the communication calculated by the second communication characteristic perceiving unit.

8. The device according to claim 7, wherein

the second communication characteristic perceiving unit obtains a frequency distribution of the response time of the nodes as the characteristics of the communication.

9. The device according to claim 8, wherein

the transmission scheduler determines the transmission time of the inquiry message based on the frequency distribution so that a probability of overlapping of the receiving time of the response message does not exceed a predetermined threshold value.

10. A non-transitory computer readable medium storing a computer program which, when executed by a computer to collect data from a plurality of nodes, causes the computer to perform steps comprising:

transmitting inquiry messages to request transmission of the data to the nodes, respectively;

receiving response messages including the data from the nodes, respectively;

generating a reception schedule of the response messages from the nodes based on request information indicating data collection condition from the nodes; and

generating a transmission schedule of the inquiry messages based on the reception schedule and characteristics of communication with the nodes;

wherein

the transmitting of the inquiry messages to the nodes, respectively, is performed based on the transmission schedule.

11. The medium according to claim 10, wherein

the steps includes determining a transmission time of the data by each of the nodes based on the transmission schedule and the characteristics of the communication, and

response transmitting time instructing messages which specify the transmission time are transmitted to the nodes as the inquiry messages.

12. A data collecting system configured to collect data from a plurality of nodes, comprising:

an inquiry transmitting device configured to transmit inquiry messages to request transmission of the data to the nodes, respectively;

a response receiving device unit configured to receive response messages including the data from the nodes, respectively;

a response reception request storage configured to store request information indicating data collection condition from the nodes;

a reception scheduler configured to generate a reception schedule of the response messages from the nodes based on the request information;

a communication characteristic storage to store characteristics of communication with the nodes; and

a transmission scheduler configured to generate a transmission schedule of the inquiry messages based on the reception schedule and the characteristics of communication with the nodes, wherein

the inquiry transmitting device transmits the inquiry messages to the nodes, respectively, based on the transmission schedule.

13. The data collecting system according to claim 12, wherein

the inquiry transmitting device determines a transmission time of the data by each of the nodes based on the transmission schedule and the characteristics of the communication, and transmits response transmitting time instructing messages which specify the transmission time, to the nodes as the inquiry messages.

14. A data collecting device configured to collect data from a plurality of nodes, comprising:

a response transmitting time instructing unit to transmit response transmitting time instructing messages which specify a transmission time of the data to the nodes, respectively;

a response receiving unit configured to receive response messages including the data from the nodes, respectively; and

a reception scheduler configured to generate a reception schedule of the response messages from the nodes based on request information indicating data collection condition from the nodes;

wherein

the response transmitting time instructing unit determines a transmission time of the data by each of the nodes based on the transmission schedule and the characteristics of the communication