METHOD FOR DETECTING MULTIPLE EVENTS AND SENSOR NETWORK USING THE SAME

• US 20100248639A1
• Filed: 03/24/2010
• Published: 09/30/2010
• Est. Priority Date: 03/24/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: RYU, Je-Hyok
• Granted Patent: US 8,610,558 B2
• Time in Patent Office: Days
• US Class Current: 455/67.110
• CPC Class Codes: H04L 12/2825 Reporting to a device located outside the home and the home network access arrangements H04L12/2856; for remote control or remote monitoring of applications H04L67/025; telephonic communication systems adapted for combination with telemetering systems H04M11/002
• CPC Class Codes: H04W 84/22 with access to wired networks

Abstract

A method and network for detecting multiple events is provided. The method includes detecting at least one subordinate event constituting a superordinate event, determining whether another subordinate event constituting the superordinate event exists in a time window other than a current time window in which the detected subordinate event is included, and determining that the superordinate event has occurred and reporting the determination, if the subordinate events constituting the superordinate event exist within a duration of the superordinate event.

Claims

1. A sensor network, comprising:

sensor nodes including multiple sensors for detecting primitive events; and

a coordinator node for determining whether the primitive events detected in the sensors are included in a duration of a complex event, and determining that the complex event has occurred if the primitive events are included in the duration.

2. The sensor network of claim 1, further comprising an upper-layer coordinator node for determining an occurrence or a non-occurrence of a multiple complex event including at least one complex event, at least one primitive event, or a combination thereof, and reporting the determination to a client.

3. The sensor network of claim 2, wherein each of the sensor nodes comprises:

a memory for storing primitive events detected in the sensors; and

a transmitter for reporting to the upper-layer coordinator node the primitive events stored in the memory.

4. The sensor network of claim 3, wherein the coordinator node comprises:

a memory for storing a primitive event reported from the sensor nodes;

a controller for determining whether another primitive event constituting the complex event is stored in the memory in addition to the detected primitive events, and if said another primitive event is detected, generating a report signal for reporting the detection; and

a transceiver for receiving a message for reporting the primitive event transmitted from the transmitter, providing the received message to the memory, and transmitting the report signal generated in the controller to the upper-layer coordinator node.

5. The sensor network of claim 4, wherein the controller classifies the primitive events stored in the memory according to their time windows, and determines whether the primitive events are included in the duration of the complex event subjected to detection.

6. A method for detecting multiple events, comprising the steps of:

detecting at least one subordinate event constituting a superordinate event;

determining whether another subordinate event constituting the superordinate event exists in a time window other than a current time window in which the detected subordinate event is included; and

determining that the superordinate event has occurred and reporting the determination, if the subordinate events constituting the superordinate event exist within a duration of the superordinate event.

7. The method of claim 6, wherein the subordinate events are primitive events detected in sensors located in a bottom layer of a sensor network.

8. The method of claim 7, wherein the superordinate event comprises at least one primitive event and at least one atomic complex event that includes multiple primitive events.

9. The method of claim 6, wherein the superordinate event is a multiple complex event including multiple atomic complex events.

10. A method for detecting multiple events, comprising the steps of:

(1) reporting a first primitive event detected in a sensor node in a bottom layer;

(2) determining whether there exists a subordinate event other than the first primitive event constituting a superordinate event; and

(3) determining a relation between the first primitive event and the subordinate events, if the subordinate event exists.

11. The method of claim 10, wherein the subordinate event is a second primitive event or complex event.

12. The method of claim 11, wherein if the first primitive event and the subordinate event have a conjunction relation in step (3), a duration of the superordinate event is stored using a start time of the subordinate event.

13. The method of claim 10, wherein if the first primitive event and the subordinate event have a disjunction relation in step (3), a duration of the superordinate event is stored using a start time of the first primitive event and a finish time of the subordinate event.