WO2013152349A1 - Intelligent power saving method for mobile devices running location based service (lbs) applications - Google Patents

Intelligent power saving method for mobile devices running location based service (lbs) applications Download PDF

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Publication number
WO2013152349A1
WO2013152349A1 PCT/US2013/035626 US2013035626W WO2013152349A1 WO 2013152349 A1 WO2013152349 A1 WO 2013152349A1 US 2013035626 W US2013035626 W US 2013035626W WO 2013152349 A1 WO2013152349 A1 WO 2013152349A1
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WIPO (PCT)
Prior art keywords
app
instructions
location
location service
service
Prior art date
Application number
PCT/US2013/035626
Other languages
French (fr)
Inventor
Shaofeng YANG
Original Assignee
Yang Shaofeng
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yang Shaofeng filed Critical Yang Shaofeng
Publication of WO2013152349A1 publication Critical patent/WO2013152349A1/en
Priority to PCT/US2013/064933 priority Critical patent/WO2014062611A1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3209—Monitoring remote activity, e.g. over telephone lines or network connections
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/34—Power consumption
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/329—Power saving characterised by the action undertaken by task scheduling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G01S19/48—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the present invention relates to a power saving method for a mobile device. More specifically, it is a method for saving mobile device battery power by intelligently controlling (turning on and off) location service to an application according to the movement condition of the mobile device.
  • LBS Location-based services
  • Apps have a number of uses in Social
  • the LBS are currently used in a wide variety of different areas, such as health, indoor object search, entertainment, work, personal life, etc.
  • the LBS include services to identify a location of a person or an object, such as discovering the nearest ATM or the whereabouts of a friend or an employee.
  • the LBS also include parcel tracking and vehicle tracking services.
  • the LBS can include mobile commerce when taking the form of coupons, advertising or store information directed at customers based on their current locations. They may also include personalized weather services and even location-based games. They are perfect examples of the rapidly developing
  • GPS global positioning system
  • FIGS 1 and 2 are schematic illustrations showing the method to save mobile device battery power when an LBS App is running in foreground.
  • FIGS 3 and 4 are schematic illustrations showing the method to save mobile device battery power when an LBS App is running in background.
  • the present invention is a method for a location based service software application running on a mobile device to save battery power consumed by the location service to the application.
  • the applications are software that are running on computing devices, such as mobile devices.
  • the present invention functions by checking a mobile device's movement condition, when a mobile device is not moving or moving within a very short distance from its previous location, the location service will be turned off in order to save battery power.
  • a location service is different from a location based service.
  • a location based service is a service (information or advertisements about local stores, ATMs, gas stations, weather, etc) provided by a server.
  • a location service is a service for location or position data provided by GPS.
  • the location service will be turned off in certain conditions and then a regional monitoring system such as a Geofence will be turned on.
  • the Geofence system will use a data source that uses less battery power than GPS does, such as cellular tower signal or Wi-Fi, to detect if the mobile device has exited the pre-determined Geofence region.
  • the Geofence can have different radii, for example, from 100 m to 2000 m, depending on which mode a user has chosen as well as other particular conditions. Without enabling location service from GPS, it can save a large amount of battery power for a mobile device.
  • the same LBS App used the present invention can reduce about 70 -90 of its power consumption.
  • the location service will be turned on to provide necessary accurate location information only if the iPhone or other mobile devices is actually making significant moving.
  • An App can run in either foreground or background of a mobile device. In both cases, the method of the present invention will first check the App's reachability to its respective LBS server, wherein this LBS server will provide location based service(s) for this mobile device. In reality, the App's reachability component will call back the App whenever the network's reachability changes. If the App cannot reach the backend service or the network is down, which means the connection between the App and its server is disrupted, the App will turn off its location service from GPS by executing a built-in application programming interface (API). For example, [locationManager stopUpdatingLocation] is an iPhone API for this purpose.
  • API application programming interface
  • the App will turn on the location service by executing another built-in API.
  • another built-in API For example, [locationManager startUpdatingLocation] is an iPhone API for this purpose.
  • the App's reachability to its server will be continuously monitored during the App's entire operation process. If the App's reachability to its server is not available, the location service to the App will be turned off in order to save battery power.
  • Such action of continuously monitoring the App's reachability to its server could be an independent process that is in parallel with the App.
  • the App's reachability to its LBS server will be first checked 102.
  • the rationale for this action is that the location service is for the purpose of providing necessary location data to facilitate an App's location based service (LBS). It needs to be determined whether the App is connected to the server 103? If the App's LBS is discontinued, the location data service to the App is apparently not needed anymore. Accordingly, such reachability will always be checked first before going further to any other power saving process. If the App is found not being connected to its server, then the on/off state of the location service to this App will be determined 104.
  • LBS App's location based service
  • the location service to the App is at the "on state"
  • the location service will be turned off 106, as it is not needed. In this way, the location service to an App will be made sure at the "off state” when the App is not connected to its server. The off state of the location service to the App will be maintained, until the App's reachability to its server has been resumed.
  • the movement condition of a mobile device can be determined by different approaches, depending on the manner how an LBS App is running on the mobile device.
  • moving data from the mobile device's built-in accelerometer will be used to determine the mobile device's moving condition 108.
  • An algorithm has been developed to identify if the mobile device is significantly moving within a pre-determined period of time.
  • the accelerometer will be used to record the movement 10 times per second for a time period of 10 seconds. These 100 moving (acceleration) data will be next used to detect the mobile device's movement.
  • the App will calculate the variance of these movement data 109. Variance is a measure of how far a set of numbers is spread out.
  • the variance will be compared with a pre-defined variance threshold 201. It needs to be determined whether the variance is greater than the threshold 202. If the variance is greater than the pre-determined threshold, the mobile device will be considered as
  • the location service's on/off state will be determined 203. In this case, if the location service is on, it will be kept at the on state (no action needed); if the location service is off, it will be turned on 206 by executing a built-in API. For example,
  • [locationManager startUpdatingLocation] is an iPhone built-in API for this purpose. As the location service is on, the App's reachability to its server will be checked again 207.
  • the mobile device will be considered as "not moving"; and location service to the App will be turned off 204.
  • the action of turning off could be executed with a built-in API. For example,
  • Geofence is an iPhone built-in API for this purpose.
  • the App When the location service is off, the App will enter a Geofence. And the mode setting will be checked to determine the intelligent mode 205.
  • intelligent tracking mode 221 There are two intelligent modes of the Geofence in the present invention, namely, intelligent tracking mode 221 and intelligent service mode 211.
  • the type of mode can be preset and changed at any time by a user. Compared with the intelligent service mode, the intelligent tracking mode is characterized by a smaller radius (such as 100 m) and more accurate location
  • the App will start the Geofence 222 with its center at the current location and with a pre-determined radius (such as 100 m) by executing a built-in API.
  • a pre-determined radius such as 100 m
  • the App will start the Geofence 222 with its center at the current location and with a pre-determined radius (such as 100 m) by executing a built-in API.
  • a pre-determined radius such as 100 m
  • a built-in API For example, [[CLRegion alloc] initCircularRegionWithCenter: currentCenterLocation radius: 100 identifier: ⁇ "current"];
  • regionLocationManager startMonitoringForRegion: current desiredAccuracy:regionMonitoringAccuracy] is iPhone built-in API for this purpose.
  • location data sources other than GPS such as cellular tower signal and Wi-Fi, will be used to get necessary location information to determine if the mobile device is still located within the pre-determined Geofence.
  • the App will start the Geofence 212 with its center at the current location and with a predetermined radius (such as 2000 m) by executing a built-in API.
  • a built-in API For example, [[CLRegion alloc] initCircularRegionWithCenter: currentCenterLocation radius: 2000 identifier: ⁇ "current"]; [regionLocationManager startMonitoringForRegion: current desiredAccuracy:regionMonitoringAccuracy] is iPhone built-in API for this purpose.
  • location data sources other than GPS such as cellular tower signal and Wi-Fi, will be used to get necessary location
  • Geofence 213 the Geofence will be turned off 214 and the location service to the App will be turned on 215 to receive location data 216.
  • This will be executed with a built-in API.
  • CLRegion region in self.regionLocationManager.monitoredRegions ⁇ [self .regionLocationManager stopMonitoringForRegion: region]; ⁇ and [locationManager startUpdatingLocation] is iPhone built-in API for such purpose.
  • the App will turn off the location service again 217.
  • the mode setting will be checked next to determine what the current mode setting is. If it is still being set as the intelligent service mode, the App will start another Geofence with intelligent service mode. If the mode setting has been changed, the App will act accordingly.
  • the accelerometer and its moving data are not readily accessible to the App.
  • data from location service will be used to calculate mobile device's moving distance (location difference) to determine whether the mobile device has been moved or not.
  • the App's reachability will be checked 302 before checking the mobile device's movement. It will be determined if the App is connected to its server 303. And the on/off state of the location service will also be determined 304. If the App is not connected to its server and location service is on, the location service will be turned off 306. If the App is connected to its server, then the mobile device's movement condition will be checked next.
  • location service data will be used by the App to detect the mobile device's movement.
  • the location service will be turned on if it is at the off state 307.
  • the location data will be obtained by the App 308.
  • the location distance within a pre-determined time period will be calculated 309. Then this location distance will be compared with a pre-determined location distance threshold 401 to determine if the distance is greater than the threshold 402.
  • the pre-determined time period could be set as 4 minutes and the predetermined location distance threshold could be set as 120 m.
  • the location distance is calculated according to the current location and the previous location within a pre-defined period such as 4 minutes. If the distance is greater than pre-defined value like 120 m, the mobile device will be considered as "moved”; otherwise, the mobile device will be treated as "not moved”.
  • the App will enter 405. If the intelligent tracking mode 421 is set by the user, the App will enter a Geofence of intelligent tracking mode with a pre-defined radius 422. Later on, when the mobile device is detected having been exited the Geofence 423, the Geofence will be turned off 424 and the location service will be turned back on 425. Also, the App's reachability to its server will be checked again 403. On the other hand, if the intelligent service mode 411 has been chosen by the user, the App will enter a Geofence of intelligent service mode with its respective pre-defined radius 412.
  • the Geofence When the mobile device later has exited the Geofence 413, the Geofence will be turned off 414 and the location service will be turned back on 415, in order to receive location data 416. In this service mode, the location service will be turned off 417 following receiving the necessary location data. Then the mode setting will be checked again to see if the setting has been changed. If it is still in the intelligent service mode, the App will enter another service mode Geofence. If it has been changed to the intelligent tracking mode, the App will enter a new tracking mode Geofence.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

A method for saving mobile device battery power by controlling location service to a location based service (LBS) application (App) will first check the reachability of this LBS App to its LBS server. In such a case when they are not connected, the location service will be turned off, no matter if the mobile device is moving or not. In the case when such a connection is confirmed, the location service will be turned on 1) if the mobile device is determined as moving based on accelerometer moving data when this App is running in foreground; or 2) if it is determined as moving based on its location data when this App is running in background. If the device is not moving, the App will turn off the location service; enter an intelligent tracking mode or an intelligent service mode.

Description

Intelligent Power Saving Method for Mobile Devices Running Location
Based Service (LBS) Applications
The current application claims a priority to the U.S. Provisional Patent
Application serial number 61/621,165, filed on April 6, 2012. The April 6, 2013 was on a weekend and the current application is filed on the next business day April 8, 2013.
FIELD OF THE INVENTION
The present invention relates to a power saving method for a mobile device. More specifically, it is a method for saving mobile device battery power by intelligently controlling (turning on and off) location service to an application according to the movement condition of the mobile device.
BACKGROUND OF THE INVENTION
Location-based services (LBS) are a general class of computer program-level services used to include specific controls for location and time data as control features in computer programs. LBS applications (Apps) have a number of uses in Social
Networking today as an entertainment service, which is accessible with mobile devices through the mobile network and which uses information on the geographical position of the mobile device. This has become more and more important with the expansion of the smart phone and tablet markets.
The LBS are currently used in a wide variety of different areas, such as health, indoor object search, entertainment, work, personal life, etc. The LBS include services to identify a location of a person or an object, such as discovering the nearest ATM or the whereabouts of a friend or an employee. The LBS also include parcel tracking and vehicle tracking services. Furthermore, the LBS can include mobile commerce when taking the form of coupons, advertising or store information directed at customers based on their current locations. They may also include personalized weather services and even location-based games. They are perfect examples of the rapidly developing
telecommunication convergence.
However, running such location based service Apps on mobile devices such as iPhone and other smart phones can drain their battery power very quickly. Battery draining is one of the major limitations of location-based Apps that have been running on an iPhone or other smart phones. For example, several hours with a service like Google Maps navigation on, the phone will be dead because it is out of battery power. Usually, a smart phone will probably not work longer than 5-6 hours with any location based service App on.
This happens because an embedded global positioning system (GPS) that provides the location service has to be enabled at all times to detect the accurate location for location based services. The location service from the GPS, which many smart phones use to identify their locations, relies on the phone's ability to receive and decode precise time signals sent out by the orbiting satellites. The decoding process requires a processor inside the phone to work hard to pick out the weak signals from background noise and then compare them with each other repeatedly as the user drive or move along to determine the user's position on the Earth. Moreover, the faster a user is moving, the greater the battery energy consumption.
It is therefore an objective of the present invention to develop a useful method to effectively save the battery power of the mobile devices including iPhone and other smart phones by intelligently switching the location service on or off according to the movement condition of the mobile device. BRIEF DESCRIPTION OF THE DRAWINGS
Figures 1 and 2 are schematic illustrations showing the method to save mobile device battery power when an LBS App is running in foreground.
Figures 3 and 4 are schematic illustrations showing the method to save mobile device battery power when an LBS App is running in background.
DETAILED DESCRIPTION OF THE INVENTION
All illustrations of the drawings are for the purpose of describing selected versions of the present invention and are not intended to limit the scope of the present invention. The present invention is a method for a location based service software application running on a mobile device to save battery power consumed by the location service to the application. The applications are software that are running on computing devices, such as mobile devices. In general, the present invention functions by checking a mobile device's movement condition, when a mobile device is not moving or moving within a very short distance from its previous location, the location service will be turned off in order to save battery power. A location service is different from a location based service. In the present invention, a location based service is a service (information or advertisements about local stores, ATMs, gas stations, weather, etc) provided by a server. A location service is a service for location or position data provided by GPS. The location service will be turned off in certain conditions and then a regional monitoring system such as a Geofence will be turned on. The Geofence system will use a data source that uses less battery power than GPS does, such as cellular tower signal or Wi-Fi, to detect if the mobile device has exited the pre-determined Geofence region. The Geofence can have different radii, for example, from 100 m to 2000 m, depending on which mode a user has chosen as well as other particular conditions. Without enabling location service from GPS, it can save a large amount of battery power for a mobile device. Compared with an LBS App without using the present invention, the same LBS App used the present invention can reduce about 70 -90 of its power consumption. In these cases, the location service will be turned on to provide necessary accurate location information only if the iPhone or other mobile devices is actually making significant moving.
An App can run in either foreground or background of a mobile device. In both cases, the method of the present invention will first check the App's reachability to its respective LBS server, wherein this LBS server will provide location based service(s) for this mobile device. In reality, the App's reachability component will call back the App whenever the network's reachability changes. If the App cannot reach the backend service or the network is down, which means the connection between the App and its server is disrupted, the App will turn off its location service from GPS by executing a built-in application programming interface (API). For example, [locationManager stopUpdatingLocation] is an iPhone API for this purpose. Later on, when the App's server connection is resumed, the App will turn on the location service by executing another built-in API. For example, [locationManager startUpdatingLocation] is an iPhone API for this purpose. In addition, the App's reachability to its server will be continuously monitored during the App's entire operation process. If the App's reachability to its server is not available, the location service to the App will be turned off in order to save battery power. Such action of continuously monitoring the App's reachability to its server could be an independent process that is in parallel with the App. There are different approaches to intelligently control location service to an LBS
App running on a mobile device. For an App running in the foreground 101 of a mobile device, the App's reachability to its LBS server will be first checked 102. The rationale for this action is that the location service is for the purpose of providing necessary location data to facilitate an App's location based service (LBS). It needs to be determined whether the App is connected to the server 103? If the App's LBS is discontinued, the location data service to the App is apparently not needed anymore. Accordingly, such reachability will always be checked first before going further to any other power saving process. If the App is found not being connected to its server, then the on/off state of the location service to this App will be determined 104. If the location service to the App is at the "on state", the location service will be turned off 106, as it is not needed. In this way, the location service to an App will be made sure at the "off state" when the App is not connected to its server. The off state of the location service to the App will be maintained, until the App's reachability to its server has been resumed.
In another scenario, if the App is confirmed as being connected to its server, suggesting that location service may be needed for the App's LBS, then the mobile device's movement condition will be checked next. The rationale for this step is that a location data service may still not be necessary if the mobile device running this LBS App actually is not moving or is still within a close distance to its previous location. In both scenarios, the updated location information is not necessarily required; and the previous location data is still useful. Thus a location service will not be turned on in order to save the mobile device's battery power.
The movement condition of a mobile device can be determined by different approaches, depending on the manner how an LBS App is running on the mobile device. In the case when the App is running in the foreground of the mobile device, moving data from the mobile device's built-in accelerometer will be used to determine the mobile device's moving condition 108. An algorithm has been developed to identify if the mobile device is significantly moving within a pre-determined period of time. For example, the accelerometer will be used to record the movement 10 times per second for a time period of 10 seconds. These 100 moving (acceleration) data will be next used to detect the mobile device's movement. The App will calculate the variance of these movement data 109. Variance is a measure of how far a set of numbers is spread out. The variance will be compared with a pre-defined variance threshold 201. It needs to be determined whether the variance is greater than the threshold 202. If the variance is greater than the pre-determined threshold, the mobile device will be considered as
"moving". The location service's on/off state will be determined 203. In this case, if the location service is on, it will be kept at the on state (no action needed); if the location service is off, it will be turned on 206 by executing a built-in API. For example,
[locationManager startUpdatingLocation] is an iPhone built-in API for this purpose. As the location service is on, the App's reachability to its server will be checked again 207.
If the variance is not greater than a pre-defined threshold, the mobile device will be considered as "not moving"; and location service to the App will be turned off 204. The action of turning off could be executed with a built-in API. For example,
[locationManager stopUpdatingLocation] is an iPhone built-in API for this purpose. When the location service is off, the App will enter a Geofence. And the mode setting will be checked to determine the intelligent mode 205. There are two intelligent modes of the Geofence in the present invention, namely, intelligent tracking mode 221 and intelligent service mode 211. The type of mode can be preset and changed at any time by a user. Compared with the intelligent service mode, the intelligent tracking mode is characterized by a smaller radius (such as 100 m) and more accurate location
information. With the intelligent tracking mode, the App will start the Geofence 222 with its center at the current location and with a pre-determined radius (such as 100 m) by executing a built-in API. For example, [[CLRegion alloc] initCircularRegionWithCenter: currentCenterLocation radius: 100 identifier: © "current"]; [regionLocationManager startMonitoringForRegion: current desiredAccuracy:regionMonitoringAccuracy] is iPhone built-in API for this purpose. In the Geofence, location data sources other than GPS, such as cellular tower signal and Wi-Fi, will be used to get necessary location information to determine if the mobile device is still located within the pre-determined Geofence. When the mobile device exits Geofence 223, the Geofence will be turned off 224 and the location service to the App will be turned on 225. Since the location service is on, the App's reachability to its server will be checked again 207.
Regarding the intelligent service mode, it is characterized by a much larger radius (such as 2000 m) and less accurate location information. In the intelligent service mode, the App will start the Geofence 212 with its center at the current location and with a predetermined radius (such as 2000 m) by executing a built-in API. For example, [[CLRegion alloc] initCircularRegionWithCenter: currentCenterLocation radius: 2000 identifier: © "current"]; [regionLocationManager startMonitoringForRegion: current desiredAccuracy:regionMonitoringAccuracy] is iPhone built-in API for this purpose. Similarly, in the Geofence of the service mode, location data sources other than GPS, such as cellular tower signal and Wi-Fi, will be used to get necessary location
information to determine if the mobile device is still located within the pre-determined Geofence. When the mobile device exits Geofence 213, the Geofence will be turned off 214 and the location service to the App will be turned on 215 to receive location data 216. This will be executed with a built-in API. For example, (CLRegion region in self.regionLocationManager.monitoredRegions) { [self .regionLocationManager stopMonitoringForRegion: region];} and [locationManager startUpdatingLocation] is iPhone built-in API for such purpose. Following receiving necessary location data, the App will turn off the location service again 217. As the location service is at off state, the mode setting will be checked next to determine what the current mode setting is. If it is still being set as the intelligent service mode, the App will start another Geofence with intelligent service mode. If the mode setting has been changed, the App will act accordingly.
On the other hand, when an App is running in the background 301 of a mobile device, the accelerometer and its moving data are not readily accessible to the App. In this case, data from location service will be used to calculate mobile device's moving distance (location difference) to determine whether the mobile device has been moved or not. Similarly, however, the App's reachability will be checked 302 before checking the mobile device's movement. It will be determined if the App is connected to its server 303. And the on/off state of the location service will also be determined 304. If the App is not connected to its server and location service is on, the location service will be turned off 306. If the App is connected to its server, then the mobile device's movement condition will be checked next. As in this case no accelerometer data are readily accessible to the App, location service data will be used by the App to detect the mobile device's movement. For this purpose, the location service will be turned on if it is at the off state 307. As the location service is available now, the location data will be obtained by the App 308. The location distance within a pre-determined time period will be calculated 309. Then this location distance will be compared with a pre-determined location distance threshold 401 to determine if the distance is greater than the threshold 402. For example, the pre-determined time period could be set as 4 minutes and the predetermined location distance threshold could be set as 120 m. The location distance is calculated according to the current location and the previous location within a pre-defined period such as 4 minutes. If the distance is greater than pre-defined value like 120 m, the mobile device will be considered as "moved"; otherwise, the mobile device will be treated as "not moved".
In the case when the mobile device is "moved", the current on state of the location service will be maintained. Since the App's location service is on, the App's reachability to its server will next be checked again 403. In the case when the mobile device is not "moved", the location service to the App will be turned off 404. Then the setting for intelligent mode will be checked to determine which mode (tracking vs. service) of
Geofence the App will enter 405. If the intelligent tracking mode 421 is set by the user, the App will enter a Geofence of intelligent tracking mode with a pre-defined radius 422. Later on, when the mobile device is detected having been exited the Geofence 423, the Geofence will be turned off 424 and the location service will be turned back on 425. Also, the App's reachability to its server will be checked again 403. On the other hand, if the intelligent service mode 411 has been chosen by the user, the App will enter a Geofence of intelligent service mode with its respective pre-defined radius 412. When the mobile device later has exited the Geofence 413, the Geofence will be turned off 414 and the location service will be turned back on 415, in order to receive location data 416. In this service mode, the location service will be turned off 417 following receiving the necessary location data. Then the mode setting will be checked again to see if the setting has been changed. If it is still in the intelligent service mode, the App will enter another service mode Geofence. If it has been changed to the intelligent tracking mode, the App will enter a new tracking mode Geofence. Although the invention has been explained in relation to its preferred
embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as herein described.

Claims

What is claimed is:
A non-transitory computer-readable medium that stores instructions executable by one or more processors to perform a method for saving battery power of a mobile device by intelligently controlling location service to a location based service (LBS) application (App) running on said mobile device, comprising
instructions for running said App in foreground of said mobile device;
instructions for checking a reachability of said App to its server, wherein said server is responsible for said App's location based service;
instructions for determining whether said App is connected to said server; instructions for determining on/off state of said location service to said App if said App is not connected to said server;
instructions for turning off said location service to said App when said App is not connected to said server and said location service to said App is on;
instructions for returning to said step of checking said reachability of said App to said server when said App is not connected to said server and said location service to said App is off;
instructions for obtaining moving data from an accelerometer when said App is connected to said server;
instructions for calculating a variance of said moving data within a predetermined time period;
instructions for comparing said variance with a pre-determined variance threshold; and
instructions for determining whether said variance is greater than said variance threshold.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 1, comprising instructions for determining on/off state of said location service to said App when said variance is greater than said variance threshold;
instructions for turning on said location service to said App when said variance is greater than said variance threshold and said location service to said App is off; and
instructions for returning to said step of checking said reachability of said App to said server when said variance is greater than said variance threshold and said location service to said App is on.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 1, comprising
instructions for determining on/off state of said location service to said App when said variance is not greater than said pre-determined variance
threshold;
instructions for turning off said location service to said App when said variance is not greater than said pre-determined variance threshold and said location service to said App is on; and
instructions for checking mode setting to determine intelligent mode when said location service to said App is off.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 3, comprising
instructions for starting a Geofence of intelligent tracking mode with a predetermined radius when the intelligent tracking mode is set;
instructions for exiting said Geofence;
instructions for turning off said Geofence;
instructions for turning on said location service to said App; and instructions for returning to said step of checking said reachability of said App to said server.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 3, comprising
instructions for starting a Geofence of intelligent service mode with a predetermined radius when the intelligent service mode is set;
instructions for exiting said Geofence;
instructions for turning off said Geofence;
instructions for turning on said location service to said App;
instructions for receiving location data from said location service;
instructions for turning off said location service to said App; and
instructions for returning to said step of checking mode setting to
determine intelligent mode.
A non-transitory computer-readable medium that stores instructions executable by one or more processors to perform a method for saving battery power of a mobile device by intelligently controlling location service to a location based service (LBS) application (App) running on said mobile device, comprising
instructions for running said App in background of said mobile device; instructions for checking a reachability of said App to its server, wherein said server is responsible for its location based service;
instructions for determining whether said App is connected to said server; instructions for determining on/off state of said location service to said
App;
instructions for turning off said location service to said App when said App is not connected to said server and said location service to said App is on, or
instructions for turning on said location service to said App when said App is connected to said server and said location service to said App off; instructions for returning to said step of checking said reachability of said App to its server when said App is not connected to said server and said location service to said App is off;
instructions for obtaining location data from said location service when said App is connected to said server and said location service to said App is on; and
instructions for calculating location distance within a pre-determined time period.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 6, comprising
instructions for comparing said location distance with a pre-determined location distance threshold;
instructions for determining whether said location distance is greater than said location distance threshold; and
instructions for returning to said step of checking said reachability of said App to its server when said location distance is greater than said location distance threshold.
8. The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 6, comprising
instructions for comparing said location distance with a pre-determined location distance threshold;
instructions for determining whether said location distance is greater than said location distance threshold;
instructions for turning off said location service to said App when said location distance is not greater than said location distance threshold; and instructions for checking mode setting to determine intelligent mode.
9. The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 8, comprising
instructions for starting a Geofence of intelligent tracking mode with a predetermined radius when the intelligent tracking mode is set;
instructions for exiting said Geofence;
instructions for turning off said Geofence;
instructions for turning on said location service to said App; and instructions for returning to said step of checking said reachability of said App to its server.
10. The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 8, comprising
instructions for starting a Geofence of intelligent service mode with a predetermined radius when the intelligent service mode is set;
instructions for exiting said Geofence;
instructions for turning off said Geofence;
instructions for turning on said location service to said App;
instructions for receiving location data from said location service; instructions for turning off said location service to said App; and instructions for returning to said step of checking mode setting to determine intelligent mode.
11. A non-transitory computer-readable medium that stores instructions executable by one or more processors to perform a method for saving battery power of a mobile device by intelligently controlling location service to a location based service (LBS) application (App) running on said mobile device, comprising
instructions for running said App in foreground of said mobile device;
instructions for checking a reachability of said App to its server, wherein said server is responsible for a location based service; and
instructions for determining whether said App is connected to said server.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 11, comprising
instructions for determining on/off state of said location service to said App when said App is not connected to said server;
instructions for turning off said location service to said App when said App is not connected to said server and said location service to said App is on; and
instructions for returning to said step of checking said reachability of said App to said server when said App is not connected to said server and said location service to said App is off.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 11, comprising
instructions for obtaining moving data from an accelerometer when said App is connected to said server;
instructions for calculating a variance of said moving data within a predetermined time period;
instructions for comparing said variance with a pre-determined variance threshold;
instructions for determining whether said variance is greater than said variance threshold; instructions for determining on/off state of said location service to said
App;
instructions for turning on said location service to said App when said variance is greater than said variance threshold and said location service to said App is off; and
instructions for returning to said step of checking said reachability of said App to said server when said variance is greater than said variance threshold and said location service to said App is on.
14. The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 11, comprising
instructions for obtaining moving data from an accelerometer when said App is connected to said server;
instructions for calculating a variance of said moving data within a predetermined time period;
instructions for comparing said variance with a pre-determined variance threshold;
instructions for determining whether said variance is greater than said variance threshold;
instructions for determining on/off state of said location service to said App; and
instructions for turning off said location service to said App when said variance is not greater than said variance threshold and said location service to said App is on.
15. The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 14, comprising instructions for checking mode setting to determine intelligent mode when said variance is not greater than said variance threshold and said location service to said App is off;
instructions for starting a Geofence of intelligent tracking mode with a predetermined radius when the intelligent tracking mode is set;
instructions for exiting said Geofence;
instructions for turning off said Geofence;
instructions for turning on said location service to said App; and
instructions for returning to said step of checking said reachability of said App to said server.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 14, comprising
instructions for checking mode setting to determine intelligent mode when said variance is not greater than said variance threshold and said location service to said App is off;
instructions for starting a Geofence of intelligent service mode with a predetermined radius when the intelligent service mode is set;
instructions for exiting said Geofence;
instructions for turning off said Geofence;
instructions for turning on said location service to said App;
instructions for receiving location data from said location service;
instructions for turning off said location service to said App; and
instructions for returning to said step of checking mode setting to determine intelligent mode.
A non-transitory computer-readable medium that stores instructions executable by one or more processors to perform a method for saving battery power of a mobile device by intelligently controlling location service to a location based service (LBS) application (App) running on said mobile device, comprising
instructions for running said App in background of said mobile device; instructions for checking a reachability of said App to its server, wherein said server is responsible for a location based service; and
instructions for determining whether said App is connected to said server.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 17, comprising
instructions for determining on/off state of said location service to said App when said App is not connected to said server;
instructions for turning off said location service to said App when said App is not connected to said server and said location service to said App is on; and
instructions for returning to said step of checking said reachability of said App to said server when said App is not connected to said server and said location service to said App is off.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 17, comprising
instructions for determining on/off state of said location service to said App when said App is connected to said server;
instructions for turning on said location service to said App when said App is connected to said server and said location service to said App is off;
instructions for obtaining location data from said location service when said App is connected to said server;
instructions for calculating location distance within a pre-determined time period; instructions for comparing said location distance with a pre-determined location distance threshold;
instructions for determining whether said location distance is greater than said location distance threshold; and
instructions for returning to said step of checking said reachability of said App's to said server when said location distance is greater than said location distance threshold.
The non-transitory computer-readable medium that stores instructions executable by one or more processors to perform the method for saving battery power of a mobile device by intelligently controlling location service to an LBS App running on said mobile device of claim 17, comprising
instructions for determining on/off state of said location service to said App when said App is connected to said server;
instructions for turning on said location service to said App when said App is connected to said server and said location service to said App is off;
instructions for obtaining location data from said location service when said App is connected to said server;
instructions for calculating location distance within a pre-determined time period;
instructions for comparing said location distance with a pre-determined location distance threshold;
instructions for determining whether said location distance is greater than said location distance threshold;
instructions for turning off said location service to said App when said location distance is not greater than said location distance threshold;
instructions for checking mode setting to determine intelligent mode when said location distance is not greater than said location distance threshold and said location service to said App is off;
instructions for starting a Geofence of intelligent tracking mode with a predetermined radius when the intelligent tracking mode is set, or instructions for starting a Geofence of intelligent service mode with a predetermined radius when the intelligent service mode is set;
instructions for going to step exiting said Geofence of intelligent tracking mode when said Geofence of intelligent tracking mode is started, or
instructions for going to step exiting said Geofence of intelligent service mode when said Geofence of intelligent service mode is started;
instructions for exiting said Geofence of intelligent tracking mode;
instructions for turning off said Geofence of intelligent tracking mode; instructions for turning on said location service to said App;
instructions for returning to said step of checking said reachability of said
App to its server;
instructions for exiting said Geofence of intelligent service mode;
instructions for turning off said Geofence of intelligent service mode; instructions for turning on said location service to said App;
instructions for receiving location data from said location service;
instructions for turning off said location service to said App; and instructions for returning to said step of checking mode setting to determine intelligent mode.
PCT/US2013/035626 2012-04-06 2013-04-08 Intelligent power saving method for mobile devices running location based service (lbs) applications WO2013152349A1 (en)

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