KR101658698B1 - Method and apparatus for gathering contexts in mobile device - Google Patents

Abstract

A method and apparatus for context collection in a mobile device are disclosed. A method for context collection in a mobile device includes the steps of: (a) activating each sensor according to a context collection period for each sensor to collect respective contexts; (b) calculating at least one of a change period and a change width of each collected context; And (c) changing a context collection period corresponding to each of the collected contexts of the per-sensor context collection period using at least one of the calculated change period and the change width.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for collecting contexts in a mobile device,

The present invention relates to a method and apparatus for context collection in a mobile device.

A mobile device is equipped with a plurality of various sensors. Various sensors installed in a mobile device are required to collect contexts repeatedly by various context-based apps, and energy consumption is considerably high.

Korean Patent Laid-Open Publication No. 10-2013-0045725 discloses a prior invention for switching to a mode for saving hardware including a sensor according to a residual energy state of a terminal. However, this is aimed at stable operation of the terminal, and there is a disadvantage that it can not consider the execution quality of the context-based application of the mobile device.

The invention is to provide a method and apparatus for context collection in a mobile device that can collect contexts in consideration of the changes in the context collected in the mobile device.

The present invention also provides a method and apparatus for context collection in a mobile device capable of collecting contexts while minimizing the energy consumption of mobile devices due to context collection.

According to an aspect of the present invention, there is provided a method of context collection in a mobile device capable of collecting a context in consideration of a change in context collected at a mobile device.

According to an embodiment of the present invention, there is provided a method of generating a context, comprising the steps of: (a) activating each sensor according to a sensor-based context collection cycle to collect respective contexts; (b) calculating at least one of a change period and a change width of each collected context; And (c) changing a context collection period corresponding to each of the collected contexts of the per-sensor context collection period using at least one of the calculated change period and the change width. Can be provided.

The step (b) may be performed when the collected context does not coincide with the previously collected context.

The change period may be the number of times the context has been collected for a unit time or the elapsed time from the time the context was previously collected to the date and time according to the collection.

The change width is a change between the context collected at the current time and the previously collected context.

Wherein the step (c) comprises: if the change period in the unit time exceeds the change period reference value, calculating a context collection period corresponding to each of the collected contexts exceeding the change period reference value among the sensor- An increasing step; And reducing the context collection period corresponding to each collected context exceeding the modification period reference value among the per-sensor context collection periods if the modification period within the unit time is less than or equal to the modification period reference value have.

The step (c) may include decreasing the context collection period corresponding to each of the collected contexts when the change width exceeds the change width reference value within a unit time.

According to another aspect of the present invention, there is provided an apparatus capable of collecting a context in consideration of a change in context collected at a mobile device.

According to an embodiment of the present invention, there is provided an apparatus for context collection in a mobile device, the apparatus comprising: a first storage unit; A second storage unit; A context collector for activating each sensor according to a sensor-based context collection cycle to collect each context and store the context in the first storage; And accumulating contexts removed from the first storage unit in response to a request of the context collecting unit and storing the accumulated contexts in the second storage unit and storing contexts of the first storage unit and the second storage unit in accordance with a context providing request of each application of the mobile device, And a context providing unit for extracting at least one context according to the providing request from at least one of the storage units and providing the extracted context.

The first storage unit may be a context basket logically allocated to a volatile memory storing a newly collected context, and the second storage unit may be a non-volatile memory.

Wherein the context collecting unit temporarily stores the context to be newly collected in the first storage unit and removes the context stored in the first storage unit in consideration of the priority when the storage capacity of the first storage unit is exceeded, To the providing unit, stores the newly collected context in the first storing unit, and the context providing unit may store the removed contexts in the second storing unit.

According to another embodiment of the present invention, there is provided an apparatus for context collection in a mobile device, the apparatus comprising: a first storage unit; A second storage unit; A collection unit for activating each sensor according to a sensor-based context collection cycle to collect and store each context in the first storage unit; A calculation unit for calculating at least one of a change period and a change width of each collected context; And a monitoring unit for changing a context collection period corresponding to each of the collected contexts of the per-sensor context collection period using at least one of the calculated change period and the change width, The context stored in the first storage unit is removed and accumulated in the second storage unit in consideration of the priorities when the storage capacity of the secondary storage unit is exceeded.

By providing a method and apparatus for context collection in a mobile device according to an embodiment of the present invention, it is possible to collect contexts in consideration of a change in context collected in a mobile device.

Accordingly, the present invention has an advantage that the energy consumption of the mobile device due to the context collection can be minimized.

1 schematically illustrates an internal configuration of an apparatus for collecting contexts in a mobile device according to an embodiment of the present invention;
2 is a block diagram showing the configuration of a context collector according to an embodiment of the present invention;
FIG. 3 is a view for explaining a context change period and a change width according to an embodiment of the present invention; FIG.
4 is a flow diagram illustrating a method for a context collection device to collect contexts according to an embodiment of the present invention.
5 is a diagram illustrating a method for changing a context collection period in consideration of at least one of a context change period and a change width according to an embodiment of the present invention;
FIG. 6 is a table showing energy consumption according to context collection according to a conventional method; FIG.
FIG. 7 is a table showing energy consumption according to context collection according to an embodiment of the present invention; FIG.
.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram schematically illustrating an internal configuration of an apparatus for collecting contexts in a mobile device according to an embodiment of the present invention. FIG. 2 is a block diagram illustrating a configuration of a context collector according to an embodiment of the present invention. And FIG. 3 is a view for explaining a context change period and a change width according to an embodiment of the present invention. An apparatus for collecting contexts (hereinafter referred to as a context collection apparatus) in a mobile device according to an embodiment of the present invention may be included in a mobile device as one configuration.

The context described below represents each piece of information collected through each sensor.

1, the context collecting apparatus 100 according to an embodiment of the present invention includes a context collecting unit 110, a context providing unit 115, a first storing unit 120, a second storing unit 125, And a controller 130.

The context collector 110 activates each sensor according to a sensor-based context collection cycle, and collects each context through an activated sensor.

The context according to an embodiment of the present invention collectively refers to each information collected through each sensor. For example, the context can collectively collect all information that can be collected through each sensor, such as location information, motion information, and touch information.

FIG. 2 schematically shows the internal configuration of the context collecting unit 110. As shown in FIG.

2, the context collection unit 110 according to an embodiment of the present invention includes a collection unit 210, a calculation unit 215, and a monitoring unit 220. [

The acquisition unit 210 activates each sensor according to the sensor-based context collection period and collects each context through the activated sensor.

Here, the per-sensor context collection period can be set using at least one of the sensor list and the collection period input by the user or the various applications executed on the basis of the context in the mobile device.

That is, each application executed on the basis of the context in the user or the mobile device may input into the acquisition unit 210 a sensor list including information on each required sensor and a collection period necessary for context acquisition for each sensor .

In an embodiment of the present invention, it is assumed that at least one of the sensor list and the collection period is received in order to facilitate understanding and explanation, but various condition information may be further input.

For example, in certain situations, it may be a condition such as activating the first sensor to collect the context, and so on. For example, a particular situation can be various conditions for activating a sensor such as N (natural number) touches.

As another example, the acquisition unit 210 may set the context collection environment using the sensor list and the collection period, and may set the per-sensor context collection period according to the set context collection environment, respectively. Here, the set context collection environment may include a condition separate from the collection period to be activated for each sensor.

The collection unit 210 temporarily stores each context collected in the first storage unit 120 according to the sensor-specific context collection period. Here, the first storage unit 120 may be a logical storage space of a volatile memory such as a cache memory, for example, a basket for storing a context (hereinafter, referred to as a context basket). Since the context basket is a cache memory, etc., the speed for reading and writing stored data is very fast, but the storage capacity is relatively small.

Thus, the collection unit 210 may maintain a storage policy to store in the context basket about the newly collected context.

This has the advantage that, in the case of newly collected contexts, the accessibility to the data and quick reading are possible because the possibility of being required in an application running on the mobile device is relatively high.

In addition, in the embodiment of the present invention, it is to be understood that the context is stored together with the data value of the context and the date and time when the context is collected.

In addition, when the newly collected context is stored in the first storage unit 120, when the storage capacity of the first storage unit 120 is insufficient, the collecting unit 210 stores the collected context in the first storage unit 120 After saving at least one of the stored contexts, the newly collected context may be stored in the first storage 120. At this time, the collection unit 210 may transmit the removed context to the context provisioning unit 115 to request cumulative storage.

Here, the priority may be at least one of a storage time, a frequency of use, and a usage time.

For example, suppose the priority is a storage point. That is, if the context stored in the oldest storage is first removed, the context collection unit 110 removes contexts stored in the first storage unit 120 in the order of the oldest storage time, Lt; / RTI >

The calculation unit 215 performs a function of calculating a change period and a change width of each newly collected context.

At this time, the calculation unit 215 may not calculate the change period and the change width, if the newly collected context matches the immediately-previously stored context. That is, the calculation unit 215 can calculate the change period and the change width only when the value of the newly collected context is changed.

In order to facilitate understanding and explanation, the context change period and the change width will be described with reference to FIG.

The change period of the context indicates the number of times the first context is collected during the unit time.

The calculation unit 215 can calculate the number of times collected for the first context for a unit time, i.e., calculate the change period of the context with the number of times the changed context value is collected.

As another example, the change period of the context indicates the elapsed time until the changed context is collected. That is, it may be the elapsed time from the previous collection time of the context until the time when the changed context is collected.

In addition, the change width of the context represents the change of the context at the third and fourth points of view with respect to the first context, as shown in Fig. Accordingly, the calculation unit 215 can calculate the change width by calculating the change of the value of the currently collected context and the value of the previously collected context.

At this time, the change period and the change width can be expressed as positive values by taking absolute values, respectively.

The monitoring unit 220 performs the function of changing at least a part of the per-sensor context collection period using at least one of the change period and the change width of the context calculated by the calculation unit 215. [

For example, when the context change cycle or the change cycle for each context collected within a unit time exceeds the change cycle reference value, the monitoring unit 220 may notify the context exceeding the change cycle reference value among the sensor- It is possible to increase the context collection period.

On the other hand, if the context change period for each context collected within a unit time is less than the change period reference value, the monitoring unit 220 may reduce the context collection period for the context that is less than the corresponding change period reference value among the sensor-specific context change cycles .

The monitoring unit 220 may reduce the context change period corresponding to the context exceeding the corresponding change width reference value in the sensor-specific context change cycle when the change width of the collected context exceeds the change width reference value. This can reduce the amount of change in the context.

In FIG. 2, the context newly collected by the acquisition unit 210 is stored in the first storage unit 120. If the storage capacity is insufficient, at least one of the contexts stored in the first storage unit 120 is removed, (115).

Alternatively, the collection unit 210 may send the newly collected context to the monitoring unit 220, the monitoring unit 220 may store the newly collected context in the first storage 120, If it is insufficient, at least one of the contexts stored in the first storage unit 120 may be removed and transmitted to the context provision unit 115.

The configuration of the context collecting unit has been described with reference to FIG. The configuration of the context collection apparatus 100 will be described with reference to FIG.

The context providing unit 115 extracts the context from the first storage unit 120 or the second storage unit 125 according to the request of each application of the mobile device and provides the extracted context to the corresponding application.

The context providing unit 115 accumulates and stores the context in the second storing unit 125 at the request of the context collecting unit 110. [ That is, when the context of the first storage unit 120 is full after the context acquisition unit 110 first stores the collected context in the first storage unit 120 (i.e., when the memory of the first storage unit 120 is full) And is stored in the second storage unit 125 through the context providing unit 115 after being removed from the first storage unit 120. [

The context providing unit 115 may store the contexts in the second storage unit 125 in a cumulative manner.

When a context providing request is inputted by the application, the context providing unit 115 extracts the context according to the request from at least one of the first storing unit 120 and the second storing unit 125 and provides the extracted context to the corresponding application .

Each application can request the context provisioning 115 via the SQL query. Here, the context provision request may include at least one of sensor information, context identification information, and condition information for acquiring a necessary context through an SQL query. Here, the condition information is a condition for extracting the context based on the sensor information or the context identification information, for example, the date information, the frequency, and the like.

Accordingly, in the SQL query, only the contexts corresponding to the corresponding condition information among the contexts corresponding to the sensor information or the context identification information are stored in the first storage unit 120 and the second storage unit 125 Extracted from at least one and can be provided to the application as a query result.

The first storage unit 120 is a storage space for temporarily storing the new context collected by the context collection unit 110. [ For example, the first storage unit 120 may be a context basket. That is, the context basket may be formed as a volatile storage space, logically divided into a logical storage having a limited size, and a cache memory on which data is loaded when the mobile device operates.

Accordingly, since the newly collected context is relatively likely to be used according to each application, the context can be stored in the first storage unit 120, which is very fast in memory access.

In another embodiment, the context collection unit 110 may store only a specific type of context in the first storage unit 120. [ Here, the specific type may be the number of applications using the context, frequency of use in an application, and the like.

That is, when the context is used by a relatively large number of applications or is frequently used, the context collection unit 110 stores the context in the first storage unit 120 to search for and extract the context relatively quickly There is also an advantage to be able to do.

The second storage unit 125 is a nonvolatile memory, and accumulates and stores the contexts.

The control unit 130 may include internal components (e.g., the context acquisition unit 110, the context providing unit 115, the first storage unit 120, and the external storage unit) of the context collecting apparatus 100 according to an embodiment of the present invention. And the second storage unit 125).

In addition, the control unit 130 may measure the energy consumption of the context collecting apparatus 100.

The energy consumption of the context collecting apparatus 100 may include a process of acquiring a context (Acqusition, ACQ), a process of acquiring a context (called Retrieval, ERT), a process of managing the acquired context (Management, (Hereinafter, referred to as MAN), and a process of processing the obtained context (processing, PRO).

One minute of energy consumption for context collection is defined as the number 1, and the unit is mAh.

Where C represents the number of contexts collected by the mobile device in the application and R represents the number of context sets acquired by the application. , ACQ represents the energy consumption for collecting the context, MAN represents the energy consumption for managing the context, RET represents the energy consumption for acquiring the context, and PRO represents the amount of energy consumed for processing the context or event in the application Energy consumption.

Energy consumption is divided into service usage and client usage. The energy usage in the service is the sum of the cost to collect the context (ACQ), the cost to manage the context (MAN), the energy usage in the client is the cost (ACQ) to collect the context, The cost (RET), the cost of processing the context or event (PRO).

FIG. 4 is a flowchart illustrating a method of collecting contexts according to an embodiment of the present invention. FIG. 5 is a flowchart illustrating a method of collecting contexts according to one embodiment of the present invention. FIG. 6 is a table showing energy consumption according to the context collection according to the conventional method, and FIG. 7 is a table showing energy consumption according to the context collection according to an embodiment of the present invention .

In step 410, the context acquisition apparatus 100 receives a sensor list and a collection period necessary for context collection, respectively.

Here, the sensor list may include identification information (e.g., the name of the sensor, MAC information, etc.) for each sensor. In addition, the collection period is a collection period for collecting contexts for each sensor for context collection, and the activation time of each sensor may be determined according to the collection period.

In step 415, the context collection apparatus 100 sets a sensor-specific context collection period using the sensor list and the collection period.

In step 420, the context acquisition apparatus 100 activates each sensor according to a sensor-specific context collection cycle, and collects each context through the activated sensor.

In step 425, the context collection apparatus 100 calculates a change period and a change width of the collected context.

Since this is the same as that described above with reference to FIG. 2, redundant description will be omitted.

At step 430, the context acquisition apparatus 100 changes at least one of the computed context change period and the change width to change some of the per-sensor context collection cycles.

This will be described in detail with reference to FIG. In order to facilitate understanding and explanation, it is assumed that the change period reference value is 4 and the change width reference value is 0.5.

As shown in FIG. 5, it can be seen that the context change period for the first context during the first unit time (from N-1 time to N time) is 12, and the change width is 0.3. The context collection apparatus 100 increases the context collection period for the first context because the modification period of the context for the first context for a unit of time exceeds the modification period reference value of 12 times.

On the other hand, when the change width of the context for the first context is 0.7 for the second unit time (from N time to N + 1 time), since the change width exceeds the change width reference value, The context collection period of the first context may be reduced to reduce the change width to the context.

As shown in FIG. 5, when comparing the change width of the context with the change width reference value, it is possible to compare the change width reference value with the maximum value among the change widths of the contexts during the unit time.

Since the change width of the context during the third unit time (from N + 1 to N + 2) is 0.25 and the change period is 4, it is determined to be optimized because it is within the change period reference value and the change width reference value. ) May not change the collection period of the context.

FIG. 6 shows the energy consumption amount consumed in the context collection when the change period and the change width of the context are not continuously optimized. FIG. 7 shows a case where the change period and the change width of the context are continuously optimized, Energy consumption.

FIG. 6 shows that contexts are continuously collected regardless of the degree of change of the context, so that the number of contexts collected is excessively large, resulting in an increase in energy consumption.

However, as shown in FIG. 7, when the context is collected by continuously optimizing the context change period and the change width in consideration of the extent of the context change, the number of contexts to be collected can be reduced, 45% is reduced, and the amount of energy consumed in the context processing is reduced by about 30%.

Meanwhile, a method of collecting contexts in a mobile device according to an exemplary embodiment of the present invention may be implemented in the form of a program command that can be executed through a variety of means for processing information electronically and recorded in a storage medium. The storage medium may include program instructions, data files, data structures, and the like, alone or in combination.

Program instructions to be recorded on the storage medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of software. Examples of storage media include magnetic media such as hard disks, floppy disks and magnetic tape, optical media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, magneto-optical media and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as devices for processing information electronically using an interpreter or the like, for example, a high-level language code that can be executed by a computer.

The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

100: Context acquisition device
110: Context collecting unit
115: Context Offering
120: first storage unit
125: second storage unit
130:

Claims (10)

(a) activating each sensor according to a sensor-based context collection period to collect respective contexts;
(b) calculating a change period and a change width of each collected context when the collected context and the previously collected context do not match; And
(c) changing a context collection period corresponding to each of the collected contexts of the per-sensor context collection period using the calculated change period and the change width; And
(d) determining a storage unit to store the collected context according to the type of the collected context, the type being a number of applications using the context or a frequency of use in an application,
Wherein the change period is a number of times the context is collected during a unit time, the change width is a change between a context collected at the current time and a previously collected context,
The step (c)
Increasing a context collection period corresponding to each collected context exceeding the modification period reference value among the per-sensor context collection periods when the modification period within a unit time exceeds a modification period reference value;
Decreasing the context collection period corresponding to each collected context exceeding the modification period reference value among the per-sensor context collection periods if the modification period within the unit time is less than or equal to the modification period reference value; And
And reducing the context collection period corresponding to each of the collected contexts when the change width exceeds the change width reference value within a unit time. delete The method according to claim 1,
Wherein the change period further comprises an elapsed time from a time at which the context was previously collected to a date at which the collection was performed. delete delete delete delete delete delete An apparatus for context collection at a mobile device,
A first storage unit;
A second storage unit;
A collection unit for activating each sensor according to a sensor-based context collection cycle to collect respective contexts and storing the collected contexts in the first storage unit or the second storage unit according to the type of the collected context; The type is the number of applications using the context or the frequency of use in the application;
A calculation unit for calculating a change period and a change width of each of the collected contexts; And
And a monitoring unit for changing the context collection period corresponding to each of the collected contexts of the per-sensor context collection period using the calculated change period and the change width,
Wherein the collecting unit removes the context stored in the first storage unit in consideration of the priority when the storage capacity of the first storage unit is exceeded, and accumulates the context in the second storage unit,
Wherein the change period is a number of times the context is collected during a unit time, the change width is a change between a context collected at the current time and a previously collected context,
The monitoring unit comprises:
When the change period within the unit time exceeds the change period reference value, increases the context collection period corresponding to each collected context exceeding the change period reference value among the per-sensor context collection periods,
The context collection period corresponding to each of the collected contexts exceeding the modification period reference value among the per-sensor context collection periods is decreased if the modification period within the unit time is less than or equal to the modification period reference value,
And decrements the context collection period corresponding to each collected context when the change width exceeds the change width reference value within a unit time.

Images