WO2020140922A1 - 用于移动通信的定位追踪方法及低功耗定位追踪*** - Google Patents
用于移动通信的定位追踪方法及低功耗定位追踪*** Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present disclosure relates to the field of wireless communication technology, and in particular, to a positioning tracking method for mobile communication and a low-power positioning tracking system.
- Obtain positioning coordinate data through a positioning system eg GPS global positioning system, Beidou
- a positioning system eg GPS global positioning system, Beidou
- the signal transmission between the device and the data access network is realized through the radio frequency module, supporting WIFI, Bluetooth, zigbee, GPRS/GSM, LORA, etc., to realize wireless networking and transmission to a remote server, mobile phone APP and other display and management;
- the terminal communication data transmission has weak anti-interference ability, and the operation and maintenance cost of the system data transmission device is high.
- Positioning and tracking mainly rely on GPS high frequency to obtain accurate latitude and longitude information, and often do not consider the difference in location and moving speed of the positioning object.
- the communication frequency is very high, which leads to the high power consumption of GPS navigation chips and peripheral circuits.
- the communication signaling interaction process between the positioning terminal and the base station is complex. After the terminal is connected to the network, the communication control plane data will be scheduled through the full-duplex mechanism.
- the network side has designed a general timing that is not sufficiently refined in order to prevent network signaling storms. Mechanisms, complex data packet interaction, communication signal power strength monitoring methods, cell reselection and handover mechanisms will all consume more power.
- the technical problem to be solved by the present disclosure is to provide a positioning tracking method for mobile communication and a low-power positioning tracking system, which can reduce the power consumption of the mobile terminal.
- embodiments of the present disclosure provide a low-power location tracking system, including:
- the terminal subsystem provided on the mobile terminal is used to periodically acquire the current position information and speed information of the mobile terminal, and send the current position information and speed information to the service management platform subsystem through the cellular IoT subsystem ;
- the cellular IoT subsystem is used to connect the terminal subsystem and the service management platform subsystem;
- the service management platform subsystem is used to control whether the terminal subsystem enters the sleep mode according to the current position information and speed information;
- the frequency at which the terminal subsystem acquires the current position information and speed information of the mobile terminal decreases.
- terminal subsystem includes:
- a positioning unit for periodically acquiring current position information and speed information of the mobile terminal
- a communication unit configured to establish communication with the cellular IoT subsystem and send the current position information and speed information to the business management platform subsystem through the cellular IoT subsystem;
- Battery unit used to power each unit
- the micro-control processing unit is used to control the working status of each unit.
- the cellular IoT subsystem includes:
- Base station eNB mobility management entity MME, serving gateway S-GW, PDN gateway P-GW.
- the communication unit is also used to negotiate parameters with the MME.
- micro-control processing unit is specifically configured to control the communication unit to turn off the signal transmission and reception and access functions when in the sleep state, monitor the power strength of the received signal, and measure the arrival time difference of multiple cells to calculate the The current location information of the mobile terminal.
- the storage battery unit adopts a dual-battery power supply mode to separately supply power to the positioning unit.
- business management platform subsystem includes:
- Data forwarding unit for receiving data
- Storage and processing unit for storing and processing data
- the man-machine interaction unit is used to receive the parameters input by the user.
- the sleep mode includes a beacon sleep mode
- the service management platform subsystem is specifically used to control the terminal subsystem to enter a sleep state when the mobile terminal enters a preset beacon area. In the sleep state, the positioning unit no longer acquires the The current position information and speed information of the mobile terminal.
- the sleep mode includes a periodic sleep mode, and the periodic sleep mode includes a first sleep mode and a second sleep mode;
- the terminal subsystem is used to send the current position information and speed information of the mobile terminal to the service management platform subsystem when it is outside the preset beacon area;
- the service management platform subsystem determines the travel mode of the mobile terminal based on the current position information and speed information, and when the travel speed of the mobile terminal is lower than a first threshold, controls the terminal subsystem to enter the first sleep Mode, the parameters of the first sleep mode include an inactivity timer duration T3 and a heartbeat period T4, where the inactivity timer is started after the RRC connection of the mobile terminal is released; or when the travel speed of the mobile terminal is greater than the second threshold At this time, the terminal subsystem is controlled to enter a second sleep mode, and the parameters of the second sleep mode include a paging cycle time interval T1 and a paging window time interval T2, where T2 ⁇ T1;
- the terminal subsystem is specifically configured to enter a sleep state after the inactivity timer duration T3 times out, and report the current location information of the mobile terminal to the service management platform subsystem when the heartbeat period T4 times out; or The current location information of the mobile terminal is reported to the service management platform subsystem at the paging window time interval T2 within the paging cycle time interval T1.
- the communication unit is also used to initiate a service request and trigger the activation of the non-access layer NAS protocol for sending data.
- the IP data packet is encapsulated into the NAS protocol data unit to establish a control plane data transmission process
- the NAS protocol data unit is transmitted to the eNB through the attached network.
- the frame format of the NAS protocol data unit includes a protocol indication, a bearer identification, a process transaction identification, and a user data segment.
- the protocol indication is used to indicate The network needs to trigger control plane optimization to transmit user data.
- NAS messages are used to transmit user data between the communication unit and the MME; the bearer identifier is used to indicate the end position of the user data; and the process transaction identifier is used to carry Release auxiliary information, used to indicate whether downlink data transmission is expected after this uplink data transmission;
- the eNB is used to send a NAS signaling request message to the MME through a dedicated control channel DCCH, which carries the NAS signaling identifier and the encrypted uplink user data;
- the MME is used to obtain the end position of the data packet through the bearer identifier. If the release of the auxiliary information indicates that the downlink data is not expected to be received and there is no uplink data to be transmitted, the MME immediately releases the wireless bearer connection after the end position of the user data packet is transmitted. .
- An embodiment of the present disclosure also provides a location tracking method for mobile communication, which is applied to a service management platform subsystem, including:
- the current position information and speed information of the mobile terminal periodically reported by the receiving terminal subsystem through the cellular Internet of Things subsystem;
- the frequency at which the terminal subsystem acquires the current position information and speed information of the mobile terminal decreases.
- the sleep mode includes a beacon sleep mode, and controlling whether the terminal subsystem enters the sleep mode based on the current position information and speed information includes:
- the terminal subsystem When the mobile terminal enters a preset beacon area, the terminal subsystem is controlled to enter a sleep state, and in the sleep state, the positioning unit of the terminal subsystem no longer acquires the current position information of the mobile terminal And speed information.
- Beacon area to receive user input.
- the sleep mode includes a periodic sleep mode, and the periodic sleep mode includes a first sleep mode and a second sleep mode; the controlling whether the terminal subsystem enters sleep according to the current position information and speed information Modes include:
- the terminal subsystem When the terminal subsystem is located outside the preset beacon area, determine the travel mode of the mobile terminal according to the current position information and speed information, and when the travel speed of the mobile terminal is lower than the first threshold, control The terminal subsystem enters a first sleep mode, and the parameters of the first sleep mode include an inactivity timer duration T3 and a heartbeat period T4, where the inactivity timer starts after the terminal RRC connection is released; or after the mobile
- the terminal subsystem is controlled to enter a second sleep mode, and the parameters of the second sleep mode include a paging cycle time interval T1 and a paging window time interval T2, where T2 ⁇ T1 ;
- the terminal subsystem enters a sleep state after the inactivity timer duration T3 times out, and reports the current location information of the mobile terminal when the heartbeat period T4 times out; or within the paging cycle time interval T1 The current location information of the mobile terminal is reported at the paging window time interval T2.
- An embodiment of the present disclosure also provides a location tracking method for mobile communication, which is applied to a cellular IoT subsystem, including:
- the frame format of the NAS protocol data unit includes a protocol indication, bearer identification, process transaction identification, and user data segment.
- the protocol indication is used to indicate that the network needs to trigger control plane optimization to transmit user data.
- the communication unit and NAS messages are used to transmit user data between the MMEs; the bearer identifier is used to indicate the end position of the user data; and the process transaction identifier is used to carry release assistance information to indicate whether or not to expect after this uplink data transmission Downlink data transmission;
- the MME Control the MME to obtain the end position of the data packet through the bearer identifier. If the release auxiliary information indicates that the downlink data is not expected to be received and there is no uplink data to be transmitted, the MME immediately releases the wireless bearer connection after the end position of the user data packet is transmitted.
- An embodiment of the present disclosure also provides a positioning tracking method for mobile communication, which is applied to a terminal subsystem and includes:
- the frequency at which the terminal subsystem acquires the current position information and speed information of the mobile terminal decreases.
- the signal transmission and reception and access functions are turned off, the received signal power strength is monitored, and the difference in the arrival time of multiple cells is measured to calculate the current location information of the mobile terminal.
- entering the sleep mode under the control of the service management platform subsystem includes:
- the positioning unit of the terminal subsystem no longer acquires the current position information and speed information of the mobile terminal.
- entering the sleep mode under the control of the service management platform subsystem includes:
- the first sleep mode When the traveling speed of the mobile terminal is lower than the first threshold, the first sleep mode is entered, and the parameters of the first sleep mode include an inactivity timer duration T3 and a heartbeat period T4, where the inactivity timer is at the terminal RRC Start after the connection is released; or enter the second sleep mode when the travel speed of the mobile terminal is greater than the second threshold, the parameters of the second sleep mode include the paging cycle time interval T1 and the paging window time interval T2, where , T2 ⁇ T1;
- the first sleep mode In the first sleep mode, enter the sleep state after the inactivity timer duration T3 times out, and report the current location information of the mobile terminal to the service management platform subsystem when the heartbeat period T4 times out; In the second sleep mode, the current location information of the mobile terminal is reported to the service management platform subsystem within the paging cycle time interval T1 at the paging window time interval T2.
- the frame format of the NAS protocol data unit includes a protocol indication, a bearer identification, a process transaction identification, and a user data segment.
- the protocol indication is used to indicate the network needs Trigger control plane optimization to transmit user data, and use NAS messages to transmit user data between the communication unit and the MME; the bearer identifier is used to indicate the end position of the user data; and the process transaction identifier is used to carry release assistance Information for indicating whether downlink data transmission is expected after this uplink data transmission.
- An embodiment of the present disclosure also provides a location tracking device, including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor executes the program as described above The mentioned location tracking method.
- An embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the steps in the positioning tracking method as described above.
- the service management platform subsystem finely adjusts the frequency of location acquisition and communication according to the different location of the mobile terminal, and cooperates with the sleep mechanism to achieve the mobile terminal's long standby capability. While ensuring the accurate and effective transmission of positioning information, it is refined to reduce the number of times the mobile terminal obtains redundant positioning information and maximizes the power consumption of the terminal subsystem, so that the mobile terminal does not need to replace the battery for several years. And the use of cellular Internet of Things for communication effectively uses the wide coverage and mass access capabilities of the cell.
- FIG. 1 is a structural block diagram of a low-power positioning tracking system according to an embodiment of the present disclosure
- FIG. 2 is a structural block diagram of a terminal subsystem of an embodiment of the present disclosure
- FIG. 3 is a structural block diagram of a cellular IoT subsystem according to an embodiment of the present disclosure
- FIG. 4 is a structural block diagram of a business management platform subsystem of an embodiment of the present disclosure.
- FIG. 5 is a schematic diagram of an NB-IoT wireless frame according to an embodiment of the present disclosure.
- FIG. 6 is a schematic flowchart of a location tracking method according to an embodiment of the present disclosure.
- Embodiments of the present disclosure provide a positioning tracking method for mobile communication and a low-power positioning tracking system, which can reduce power consumption of a mobile terminal.
- An embodiment of the present disclosure provides a low-power location tracking system, as shown in FIG. 1, including:
- the terminal subsystem provided on the mobile terminal is used to periodically acquire the current position information and speed information of the mobile terminal, and send the current position information and speed information to the service management platform subsystem through the cellular IoT subsystem ;
- the cellular IoT subsystem is used to connect the terminal subsystem and the service management platform subsystem;
- the service management platform subsystem is used to control whether the terminal subsystem enters the sleep mode according to the current position information, speed information, and preset sleep mode parameters;
- the frequency at which the terminal subsystem acquires the current position information and speed information of the mobile terminal decreases.
- the service management platform subsystem finely adjusts the frequency of location acquisition and communication according to the location of the mobile terminal, and cooperates with the sleep mechanism to achieve the mobile terminal's long standby capability. While ensuring the accurate and effective transmission of positioning information, it is refined to reduce the number of times the mobile terminal obtains redundant positioning information and maximizes the power consumption of the terminal subsystem, so as to realize that the mobile terminal does not need to replace the battery for years. And the use of cellular Internet of Things for communication effectively uses the wide coverage and mass access capabilities of the cell.
- the business management platform subsystem can be connected with the mobile phone APP, and the user can set parameters to the business management platform subsystem through the mobile phone APP.
- the terminal subsystem includes:
- a positioning unit for periodically acquiring current position information and speed information of the mobile terminal
- a communication unit configured to establish communication with the cellular IoT subsystem and send the current position information and speed information to the business management platform subsystem through the cellular IoT subsystem;
- Battery unit used to power each unit
- the micro-control processing unit is used to control the working status of each unit.
- the terminal subsystem further includes: a sensing unit, an alarm unit, a storage unit, a third-party interface unit, and a switch unit.
- the cellular IoT subsystem includes:
- Base station eNB mobility management entity MME, serving gateway S-GW, PDN gateway P-GW.
- the communication unit is also used to negotiate sleep mode parameters with the MME.
- micro-control processing unit is specifically configured to control the communication unit to turn off the signal transmission and reception and access functions when in the sleep state, monitor the power strength of the received signal, and measure the arrival time difference of multiple cells to calculate the The current location information of the mobile terminal.
- the storage battery unit adopts a dual-battery power supply mode to separately supply power to the positioning unit.
- the business management platform subsystem includes:
- Data forwarding unit for receiving data
- Storage and processing unit for storing and processing data
- the man-machine interaction unit is used to receive the parameters input by the user.
- the sleep mode includes a beacon sleep mode, and the sleep mode parameters include a preset beacon area;
- the service management platform subsystem is specifically used to control the terminal subsystem to enter a sleep state when the mobile terminal enters a preset beacon area. In the sleep state, the positioning unit no longer acquires the The current position information and speed information of the mobile terminal.
- the sleep mode includes a periodic sleep mode
- the periodic sleep mode includes a first sleep mode and a second sleep mode
- the sleep mode parameters include a first sleep mode parameter and a second sleep mode parameter
- the terminal subsystem is used to send the current position information and speed information of the mobile terminal to the service management platform subsystem when it is outside the preset beacon area;
- the service management platform subsystem determines the travel mode of the mobile terminal based on the current position information and speed information, and when the travel speed of the mobile terminal is lower than a first threshold, controls the terminal subsystem to enter the first sleep Mode, the parameters of the first sleep mode include an inactivity timer duration T3 and a heartbeat period T4, where the inactivity timer is started after the RRC connection of the mobile terminal is released; or when the traveling speed of the mobile terminal is greater than the second threshold At this time, the terminal subsystem is controlled to enter a second sleep mode, and the parameters of the second sleep mode include a paging cycle time interval T1 and a paging window time interval T2, where T2 ⁇ T1;
- the terminal subsystem is specifically configured to enter a sleep state after the inactivity timer duration T3 times out, and report the current location information of the mobile terminal to the service management platform subsystem when the heartbeat period T4 times out; or The current location information of the mobile terminal is reported to the service management platform subsystem at the paging window time interval T2 within the paging cycle time interval T1.
- the communication unit is also used to initiate a service request and trigger the activation of the non-access layer NAS protocol for sending data.
- the IP data packet is encapsulated into the NAS protocol data unit to establish a control plane data transmission process
- the NAS protocol data unit is transmitted to the eNB through the attached network.
- the frame format of the NAS protocol data unit includes a protocol indication, a bearer identification, a process transaction identification, and a user data segment.
- the protocol indication is used to indicate The network needs to trigger control plane optimization to transmit user data.
- NAS messages are used to transmit user data between the communication unit and the MME; the bearer identifier is used to indicate the end position of the user data; and the process transaction identifier is used to carry Release auxiliary information, used to indicate whether downlink data transmission is expected after this uplink data transmission;
- the eNB is used to send a NAS signaling request message to the MME through a dedicated control channel DCCH, which carries the NAS signaling identifier and the encrypted uplink user data;
- the MME is used to obtain the end position of the data packet through the bearer identifier. If the release of the auxiliary information indicates that the downlink data is not expected to be received and there is no uplink data to be transmitted, the MME immediately releases the wireless bearer connection after the end position of the user data packet is transmitted. .
- An embodiment of the present disclosure also provides a location tracking method for mobile communication, which is applied to a service management platform subsystem, including:
- the current position information and speed information of the mobile terminal periodically reported by the receiving terminal subsystem through the cellular Internet of Things subsystem;
- the frequency at which the terminal subsystem acquires the current position information and speed information of the mobile terminal decreases.
- the service management platform subsystem finely adjusts the frequency of location acquisition and communication according to the location of the mobile terminal, and cooperates with the sleep mechanism to achieve the mobile terminal's long standby capability. While ensuring accurate and effective transmission of positioning information, it is also refined to reduce the number of times mobile terminals acquire redundant positioning information, and maximize the power consumption of the terminal subsystem, so that mobile terminals do not need to replace batteries for several years. And the use of cellular Internet of Things for communication effectively uses the wide coverage and mass access capabilities of the cell.
- the sleep mode includes a beacon sleep mode
- the sleep mode parameters include a preset beacon area
- the terminal subsystem is controlled according to the current position information, speed information, and preset sleep mode parameters Whether to enter sleep mode includes:
- the terminal subsystem When the mobile terminal enters a preset beacon area, the terminal subsystem is controlled to enter a sleep state, and in the sleep state, the positioning unit of the terminal subsystem no longer acquires the current position information of the mobile terminal And speed information.
- Beacon area to receive user input.
- the sleep mode includes a periodic sleep mode
- the periodic sleep mode includes a first sleep mode and a second sleep mode
- the sleep mode parameters include a first sleep mode parameter and a second sleep mode parameter
- Controlling whether the terminal subsystem enters the sleep mode according to the current position information, speed information, and preset sleep mode parameters includes:
- the terminal subsystem When the terminal subsystem is located outside the preset beacon area, determine the travel mode of the mobile terminal according to the current position information and speed information, and when the travel speed of the mobile terminal is lower than the first threshold, control The terminal subsystem enters a first sleep mode, and the parameters of the first sleep mode include an inactivity timer duration T3 and a heartbeat period T4, where the inactivity timer starts after the terminal RRC connection is released; or after the mobile
- the terminal subsystem is controlled to enter a second sleep mode, and the parameters of the second sleep mode include a paging cycle time interval T1 and a paging window time interval T2, where T2 ⁇ T1 ;
- the terminal subsystem enters a sleep state after the inactivity timer duration T3 times out, and reports the current location information of the mobile terminal when the heartbeat period T4 times out; or within the paging cycle time interval T1 The current location information of the mobile terminal is reported at the paging window time interval T2.
- An embodiment of the present disclosure also provides a location tracking method for mobile communication, which is applied to a cellular IoT subsystem, including:
- the frame format of the NAS protocol data unit includes a protocol indication, bearer identification, process transaction identification, and user data segment.
- the protocol indication is used to indicate that the network needs to trigger control plane optimization to transmit user data.
- the communication unit and NAS messages are used to transmit user data between the MMEs; the bearer identifier is used to indicate the end position of the user data; and the process transaction identifier is used to carry release assistance information to indicate whether or not to expect after this uplink data transmission Downlink data transmission;
- the MME Control the MME to obtain the end position of the data packet through the bearer identifier. If the release auxiliary information indicates that the downlink data is not expected to be received and there is no uplink data to be transmitted, the MME immediately releases the wireless bearer connection after the end position of the user data packet is transmitted.
- An embodiment of the present disclosure also provides a positioning tracking method for mobile communication, which is applied to a terminal subsystem and includes:
- the frequency at which the terminal subsystem acquires the current position information and speed information of the mobile terminal decreases.
- the service management platform subsystem finely adjusts the frequency of location acquisition and communication according to the location of the mobile terminal, and cooperates with the sleep mechanism to realize the mobile terminal's long standby capability. While ensuring the accurate and effective transmission of positioning information, it is refined to reduce the number of times the mobile terminal obtains redundant positioning information and maximizes the power consumption of the terminal subsystem, so that the mobile terminal does not need to replace the battery for several years. And the use of cellular Internet of Things for communication effectively uses the wide coverage and mass access capabilities of the cell.
- the signal transmission and reception and access functions are turned off, the received signal power strength is monitored, and the difference in the arrival time of multiple cells is measured to calculate the current location information of the mobile terminal.
- entering the sleep mode under the control of the service management platform subsystem includes:
- the positioning unit of the terminal subsystem no longer acquires the current position information and speed information of the mobile terminal.
- entering the sleep mode under the control of the service management platform subsystem includes:
- the first sleep mode When the traveling speed of the mobile terminal is lower than the first threshold, the first sleep mode is entered, and the parameters of the first sleep mode include an inactivity timer duration T3 and a heartbeat period T4, where the inactivity timer is at the terminal RRC Start after the connection is released; or enter the second sleep mode when the travel speed of the mobile terminal is greater than the second threshold, the parameters of the second sleep mode include the paging cycle time interval T1 and the paging window time interval T2, where , T2 ⁇ T1;
- the first sleep mode In the first sleep mode, enter the sleep state after the inactivity timer duration T3 times out, and report the current location information of the mobile terminal to the service management platform subsystem when the heartbeat period T4 times out; In the second sleep mode, the current location information of the mobile terminal is reported to the service management platform subsystem within the paging cycle time interval T1 at the paging window time interval T2.
- the frame format of the NAS protocol data unit includes a protocol indication, a bearer identification, a process transaction identification, and a user data segment.
- the protocol indication is used to indicate the network needs Trigger control plane optimization to transmit user data
- NAS messages are used to transmit user data between the communication unit and the MME
- the bearer identifier is used to indicate the end position of the user data
- the process transaction identifier is used to carry release assistance Information for indicating whether downlink data transmission is expected after this uplink data transmission.
- This embodiment fully considers the requirements of the location tracking application for communication frequency and the effective wireless connection bearing time of the mobile terminal.
- a low-power location tracking solution is proposed. Mainly use network base station positioning data, while ensuring accurate and effective transmission of positioning information, according to the location of the mobile terminal, combined with the mobile terminal's beacon scene and displacement changes, fine-tune the location acquisition frequency, reduce mobile terminal redundancy Communication process, and cooperate with the sleep mechanism to achieve ultra-long standby capacity of the mobile terminal, so as to realize that the mobile terminal does not need to replace the battery for several years.
- the low-power positioning tracking system consists of a terminal subsystem, a cellular IoT subsystem, and a business management platform subsystem.
- the terminal subsystem and the service management platform subsystem are connected through the cellular IoT subsystem.
- the main application scenario of this embodiment is a scenario where it is difficult to replace batteries frequently, such as material loss prevention, personnel search, etc., and does not need to obtain accurate positioning information in real time. Lower-frequency positioning information is sufficient to grasp the approximate location of the positioning object.
- the terminal subsystem is installed on the mobile terminal, and the positioning unit of the terminal subsystem is used to periodically obtain the current position information of the mobile terminal, and the output data includes the current position information and speed information of the mobile terminal;
- the communication unit of the terminal subsystem establishes a wireless resource bearer with the cellular IoT cell base station eNB, and completes the mobile terminal attachment and registration of the network after joining the network.
- the communication unit carries the sleep mode parameters (the sleep mode parameters include inactivity timer time and heartbeat cycle time interval, and the discontinuous reception mode parameters include extended paging cycle and paging window time interval) through the attach request message, and negotiates with the core network MME, If there is no locally configured duration of higher priority in the MME, the timing parameter is set to the currently negotiated value.
- the communication unit of the mobile terminal In the sleep state (during the non-paging window or after the inactivity timer expires), the communication unit of the mobile terminal closes the signal transmission and reception and access functions, and the mobile terminal micro-control processing unit assignment instructs each working unit to enter sleep, thereby Reduce power consumption of antennas, radio frequency, signaling processing, etc., but in the state of registration in the network.
- the communication unit monitors the received signal power strength and measures the time difference of arrival (OTDOA) of multiple cells to calculate the current location information of the mobile terminal.
- OTDOA time difference of arrival
- the storage battery unit of the terminal subsystem adopts the power supply mode of dual battery power supply to supply power separately to the positioning unit. Even if the frequency of the third-party interface function is high and the power is not used, the positioning unit can still work, so that the terminal subsystem has at least the positioning function.
- the micro-control processing unit of the terminal subsystem controls the units of the terminal subsystem to work together so that the terminal subsystem contains at least multiple working modes:
- beacons People, pets, things, etc. that need to be positioned for anti-lost are in certain locations for most of the day. Put beacons for these frequent places.
- the positioning object enters the beacon range, it enters the ultra-low Sleep mode for power consumption. In this mode, there is no need to obtain positioning information, which minimizes power consumption. For example, pets spend most of their time at home or in certain activities.
- the terminal subsystem When locating the mobile terminal away from the security beacon area, the terminal subsystem uploads the current position and speed information of the mobile terminal to the business management platform subsystem through the communication unit, and the business management platform subsystem determines the travel mode according to the current position and speed of the mobile terminal. And with the lowest power consumption overhead, timely collection of positioning information.
- the working mode of the terminal subsystem is turned into the PSM (power savings mode) mode, which is the above first sleep mode, and the PSM long-cycle sleep mode parameters include the inactivity timer duration T3 And the heartbeat period T4, in which the inactivity timer is started after the RRC connection of the terminal subsystem is released.
- the terminal subsystem maintains deep sleep to reduce power consumption.
- the terminal subsystem is woken up every time the heartbeat period T2 times out, obtains and reports the current Position coordinate information.
- the working mode of the terminal subsystem is switched to eDRX (extended Discontinuous Reception, extended discontinuous reception) mode, that is, the above-mentioned second sleep mode, for fine positioning, the heartbeat cycle is shortened to a shorter Periodically, obtain the timely position information of the high-speed moving positioning object in the non-beacon area at a higher frequency.
- the discontinuous reception mode parameters include a paging cycle time interval T1 and a paging window time interval T2, where T2 ⁇ T1.
- a radio bearer is established with the IoT of the cellular Internet of Things at a certain paging interval within the paging window, the communication unit of the terminal subsystem remains activated, and the terminal subsystem maintains deep sleep outside the paging window to reduce power consumption.
- the network base station unit eNB cannot predict whether the terminal subsystem has data to send, the network side completes the service on the mobile terminal in order to prevent a large amount of redundant signaling load (signaling storm) caused by repeatedly removing the wireless link After transmission, the wireless communication link will always be maintained for a period of time before being released. During this period of time, the mobile terminal is still in the wireless link connection state, which results in the mobile terminal having to consume a certain amount of power for this. Therefore, for positioning mobile terminals that are extremely sensitive to power consumption, it is necessary to optimize this process in order to further extend the duration of power usage.
- the present disclosure proposes an optimized solution to the problem that the RRC radio link release timer of the mobile terminal is too long to shorten the radio link connection time.
- the communication unit of the terminal subsystem initiates a service request to trigger the activation of the non-access layer NAS protocol for sending data.
- the frame format defined by the NAS protocol includes protocol indication, bearer identification (ID), process transaction identification, and user data segment.
- Protocol indication is used to indicate that the network needs to trigger control plane optimization to transmit user data.
- NAS messages are used between UE and MME to transmit user data; bearer ID is used to indicate the end position of user data; process transaction ID is used to carry release auxiliary information, It is used to indicate whether downstream data transmission is expected after this upstream data transmission (for example, acknowledgment and response of upstream data).
- the communication unit encapsulates the IP data packet into the NAS protocol data unit to establish a control plane data transmission process.
- the communication unit transmits the NAS protocol data unit to the network base station unit eNB through the attached network.
- the eNB sends a NAS signaling request message to the cellular IoT unit MME through a dedicated control channel DCCH, where the uplink carries the NAS message. Order identification and encrypted upstream user data.
- the MME obtains the end position of the data packet through the bearer identifier. If the release of the auxiliary information indicates that the downlink data is not expected to be received and there is no uplink data to be transmitted, the MME immediately releases the radio bearer connection after the end position of the user data packet is transmitted.
- the mobile terminal immediately exits the connection state and starts the PSM timer, and immediately enters the sleep state after the time expires, reducing the power consumption of the service connection state.
- FIG. 5 is a schematic diagram of the definition of the non-access layer NAS protocol frame format.
- the location tracking method in a specific embodiment specifically includes the following steps:
- the associated positioning and tracking device that is, the mobile terminal including the terminal subsystem
- Step 2 The mobile terminal is initialized after power-on, searching for the base station signal of the cell where it is located, and carrying the PSM mode timer parameters (inactivity timer duration T3 and heartbeat period T4) in the attach message, and the eDRX mode timer parameters (paging Periodic time interval T1 and paging window time interval T2).
- Received signal power indication function to realize that the current received power of the device is provided by the signal strength indication reference value carried by the received signal, and the sampling frequency of the signal strength indication reference value is 1s.
- Step 3 The terminal subsystem of the mobile terminal uploads the current location information and speed information of the mobile terminal to the business management platform subsystem through the communication unit.
- the business management platform subsystem can determine the travel mode and start the corresponding Working mode, and obtain the current position coordinate information of the positioning and tracking device.
- the walking speed of a person is generally 4-10 km/h, and optionally, a speed of less than 10 km/h is judged as walking, and a speed of 10 km/h or more is judged as riding.
- the mobile terminal When Lxn or Lyn is less than the threshold value L, the mobile terminal enters the beacon area.
- the terminal subsystem starts the quiescent mode to keep the whole machine asleep to reduce power consumption.
- the terminal subsystem When the obtained positioning coordinates and the beacon coordinates are greater than the threshold value L, it indicates that the positioning object is leaving the beacon area, the terminal subsystem starts the PSM mode, the mobile terminal periodically exits sleep, but is in a registered state in the network.
- the heartbeat period T4 is set to a longer period, for example, 10 minutes, that is, acquiring positioning information once every 10 minutes is enough to grasp the approximate position of the positioning object.
- the mobile terminal When the heartbeat period T4 times out, the mobile terminal is woken up, reports the current location information obtained after establishing the RRC radio bearer with the eNB, and reports it to the cellular IoT eNB. After the data transmission is completed, the RRC connection is released and the sleep state is entered again after the timer expires.
- the terminal subsystem continues to obtain the current location information of the mobile terminal.
- the working mode of the terminal subsystem is switched to the eDRX mode, and the heartbeat cycle is shortened to a shorter cycle, for example, 2 minutes.
- the service service platform subsystem initiates a location acquisition request at intervals of the paging cycle T1.
- the S-GW of the cellular IoT subsystem receives the downlink data in the non-paging window, it will buffer the data packet and wait for the mobile terminal to enter the paging time window T2, the MME of the cellular IoT subsystem pages the mobile terminal and triggers the establishment of an air interface connection, and forwards the request data packet to the mobile terminal.
- the mobile terminal In response to the request, the mobile terminal reports the current location information to the eNB of the cellular IoT subsystem, forwards it to the service management platform subsystem after being forwarded by each unit of the core network.
- the storage processing unit analyzes and determines the position coordinates. If the mobile terminal is in the non-beacon area and the acquired position coordinate value changes, after the paging time interval T1 times out, the position acquisition request is initiated again to continue acquiring the position coordinates of the mobile terminal.
- the disclosure can realize the differential adjustment of the communication frequency in different positioning scenarios, and the innovatively designed method for finely adjusting the positioning data acquisition frequency can reduce the redundant communication process of the mobile terminal and cooperate with the sleep mechanism to achieve low power consumption positioning.
- the present disclosure innovatively uses a dedicated control channel DCCH to report and locate mobile terminal network data, and designs a NAS protocol frame format.
- the network management unit MME can accurately find the effective data bit end position of the mobile terminal reported data packet according to the frame identifier, and effectively shorten the correlation Invalid radio bearer connection time caused by base station technology in the technology.
- the sleep mode of the present disclosure includes a beacon sleep mode, a long-period sleep mode, and a design method of a discontinuous reception sleep mode, where the discontinuous reception sleep mode can distinguish between positioning scenarios of walking and on-vehicle advancement.
- the present disclosure calculates the current position information of the mobile terminal by measuring the difference in signal arrival time of the multi-base station cell, and accurately and limitedly transmits the positioning information according to the position of the mobile terminal and the different moving speed, and realizes the ultra-long standby of the mobile terminal .
- An embodiment of the present disclosure also provides a location tracking device, including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor executes the program as described above The mentioned location tracking method.
- An embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the steps in the positioning tracking method as described above.
- Computer-readable media including permanent and non-permanent, removable and non-removable media, can store information by any method or technology.
- the information may be computer readable instructions, data structures, modules of programs, or other data.
- Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices.
- computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.
- the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
- the processing unit can be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable Logic Device (Programmable Logic Device, PLD), Field Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, others for performing the functions described in this disclosure Electronic unit or its combination.
- ASIC Application Specific Integrated Circuits
- DSP Digital Signal Processing
- DSP Device digital signal processing device
- DPD digital signal processing device
- PLD programmable Logic Device
- Field Programmable Gate Array Field-Programmable Gate Array
- FPGA Field-Programmable Gate Array
- the technology described in the embodiments of the present disclosure may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
- the software codes can be stored in the memory and executed by the processor.
- the memory may be implemented in the processor or external to the processor.
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Abstract
本公开提供了一种用于移动通信的定位追踪方法及低功耗定位追踪***。低功耗定位追踪***包括:设置在移动终端上的终端子***,用于周期性获取所述移动终端的当前位置信息和速度信息,并通过蜂窝物联网子***将所述当前位置信息和速度信息发送至业务管理平台子***;所述蜂窝物联网子***,用于连接所述终端子***和所述业务管理平台子***;所述业务管理平台子***,用于根据所述当前位置信息、速度信息以及预设的参数控制所述终端子***是否进入休眠模式;在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
Description
相关申请的交叉引用
本申请主张在2019年1月2日在中国提交的中国专利申请No.201910000973.8优先权,其全部内容通过引用包含于此。
本公开涉及无线通信技术领域,特别是指一种用于移动通信的定位追踪方法及低功耗定位追踪***。
近年来,定位追踪设备与宠物防丢、生命体征监测、冷链物流结合,借助蓝牙、2G/GPRS、ZigBee、Lora等通信技术实现定位追踪端到端服务,已成为研究热点。
在相关的技术方案中,一般利用如下技术及步骤:
1、通过定位***(如:GPS全球定位***、北斗)获取定位坐标数据;
2、通过三轴加速度传感器获取运动速度、运动计数数据;
3、通过人体体征传感器获取心跳血压等人体生命体征数据;
4、通过智能手机实现人机交互快捷功能,并提供身份验证功能;
5、采用蓄电池、USB充电、太阳能转电能等方式供电;
6、通过射频模块实现装置与数据接入网之间的信号传输,支持WIFI、蓝牙、zigbee、GPRS/GSM、LORA等,实现无线联网并传输到远程服务器、手机APP等显示并管理;
7、通过移动通信技术将监测信息传输到服务平台。
相关技术中:
(1)定位追踪产品的续航时间一般在3个月之内,对于冷链物流、野外作业人员佩戴等使用场景,待机能力难以满足场景体验。
(2)传输距离短,难以覆盖广阔的活动空间,用户体验有一定局限性。
(3)终端通信数据传输抗干扰能力不强,同时***数传装置运行维护成本高。
(4)数据无法集中管理,分散于单个佩戴对象设备。
相关的技术方案都存在待机时间不长的问题,主要原因在于定位追踪设备与基站通信时消耗的功耗过高,主要原因包括:
1、定位追踪主要依靠GPS高频次获取精确的经纬度信息,往往不考虑定位对象的位置、移动速度的差异,通信频次非常高,导致而GPS导航芯片及***电路耗电量普遍较高。
2、定位终端与基站通信信令交互流程复杂,终端入网后会不间断地通过全双工机制调度通信控制面数据,而网络侧为了防止网络信令风暴,设计了不够精细化的通用的定时机制,复杂的数据包交互、通信信号功率强度监听方式、小区重选和切换机制都将消耗较多电量。
发明内容
本公开要解决的技术问题是提供一种用于移动通信的定位追踪方法及低功耗定位追踪***,能够降低移动终端的功耗。
为解决上述技术问题,本公开的实施例提供技术方案如下:
一方面,本公开的实施例提供一种低功耗定位追踪***,包括:
设置在移动终端上的终端子***,用于周期性获取所述移动终端的当前位置信息和速度信息,并通过蜂窝物联网子***将所述当前位置信息和速度信息发送至业务管理平台子***;
所述蜂窝物联网子***,用于连接所述终端子***和所述业务管理平台子***;
所述业务管理平台子***,用于根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式;
在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
进一步地,所述终端子***包括:
定位单元,用于周期性获取所述移动终端的当前位置信息和速度信息;
通信单元,用于与所述蜂窝物联网子***建立通信,并通过所述蜂窝物联网子***将所述当前位置信息和速度信息发送至所述业务管理平台子***;
蓄电池单元,用于为各单元供电;
微控制处理单元,用于控制各单元的工作状态。
进一步地,所述蜂窝物联网子***包括:
基站eNB、移动性管理实体MME、服务网关S-GW、PDN网关P-GW。
进一步地,所述通信单元还用于与所述MME协商参数。
进一步地,所述微控制处理单元具体用于控制所述通信单元在处于休眠状态时,关闭信号收发和接入功能,监听接收信号功率强度,并测量多个小区的抵达时间差,计算出所述移动终端的当前位置信息。
进一步地,所述蓄电池单元采用双电池电源的供电方式,为所述定位单元单独供电。
进一步地,所述业务管理平台子***包括:
数据转发单元,用于接收数据;
存储处理单元,用于存储和处理数据;
人机交互单元,用于接收用户输入的参数。
进一步地,所述休眠模式包括信标休眠模式;
所述业务管理平台子***具体用于在所述移动终端进入预设的信标区域内,控制所述终端子***进入休眠状态,在所述休眠状态下,所述定位单元不再获取所述移动终端的当前位置信息和速度信息。
进一步地,所述休眠模式包括周期性休眠模式,所述周期性休眠模式包括第一休眠模式和第二休眠模式;
所述终端子***用于在位于预设的信标区域外时,将所述移动终端的当前位置信息和速度信息发送给业务管理平台子***;
所述业务管理平台子***根据所述当前位置信息和速度信息判断所述移动终端的行进方式,当所述移动终端的行进速度低于第一阈值时,控制所述终端子***进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器 时长T3和心跳周期T4,其中,不活动定时器在移动终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,控制所述终端子***进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;
所述终端子***具体用于在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向所述业务管理平台子***上报所述移动终端的当前位置信息;或在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2向所述业务管理平台子***上报所述移动终端的当前位置信息。
进一步地,所述通信单元还用于发起服务请求触发启用非接入层NAS协议用于发送数据,在上报当前位置信息时,将IP数据包封装到NAS协议数据单元,建立控制面数据传输流程,建立无线承载连接后通过附着网络,将NAS协议数据单元传输到eNB,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述通信单元和所述MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输;
所述eNB用于通过专用控制信道DCCH向所述MME发送NAS信令请求消息,其中携带NAS信令标识和已经加密的上行用户数据;
所述MME用于通过承载标识获取到该数据包的末端位置,如果释放辅助信息指示不期待接收下行数据并且也没有上行数据需要传递,用户数据包末端位置传输结束后,MME立即释放无线承载连接。
本公开实施例还提供了一种用于移动通信的定位追踪方法,应用于业务管理平台子***,包括:
接收终端子***通过蜂窝物联网子***周期性上报的移动终端的当前位置信息和速度信息;
根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式;
在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
进一步地,所述休眠模式包括信标休眠模式,所述根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式包括:
在所述移动终端进入预设的信标区域内,控制所述终端子***进入休眠状态,在所述休眠状态下,所述终端子***的定位单元不再获取所述移动终端的当前位置信息和速度信息。
进一步地,还包括:
接收用户输入的信标区域。
进一步地,所述休眠模式包括周期性休眠模式,所述周期性休眠模式包括第一休眠模式和第二休眠模式;所述根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式包括:
在所述终端子***位于预设的信标区域外时,根据所述当前位置信息和速度信息判断所述移动终端的行进方式,当所述移动终端的行进速度低于第一阈值时,控制所述终端子***进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,控制所述终端子***进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;
其中,所述终端子***在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向上报所述移动终端的当前位置信息;或在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2上报所述移动终端的当前位置信息。
本公开实施例还提供了一种用于移动通信的定位追踪方法,应用于蜂窝物联网子***,包括:
将终端子***上报的移动终端的当前位置信息和速度信息发送至业务管理平台子***。
进一步地,还包括:
与所述终端子***协商参数。
进一步地,还包括:
接收所述终端子***的触发启用非接入层NAS协议用于发送数据的服务请求,与所述终端子***建立控制面数据传输流程,建立无线承载连接,接收所述终端子***的NAS协议数据单元,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述通信单元和所述MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输;
控制eNB通过专用控制信道DCCH向MME发送NAS信令请求消息,其中携带NAS信令标识和已经加密的上行用户数据;
控制MME通过承载标识获取到该数据包的末端位置,如果释放辅助信息指示不期待接收下行数据并且也没有上行数据需要传递,用户数据包末端位置传输结束后,MME立即释放无线承载连接。
本公开实施例还提供了一种用于移动通信的定位追踪方法,应用于终端子***,包括:
周期性获取移动终端的当前位置信息和速度信息,并通过蜂窝物联网子***将所述当前位置信息和速度信息发送至业务管理平台子***;
在所述当前位置信息和/或速度信息满足预设的参数的要求时,在所述业务管理平台子***的控制下进入休眠模式;
在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
进一步地,还包括:
与所述蜂窝物联网子***的MME协商参数。
进一步地,在处于休眠状态时,关闭信号收发和接入功能,监听接收信号功率强度,并测量多个小区的抵达时间差,计算出所述移动终端的当前位置信息。
进一步地,所述在所述当前位置信息和/或速度信息满足预设的参数的要求时,在所述业务管理平台子***的控制下进入休眠模式包括:
在所述移动终端进入预设的信标区域内,进入休眠状态,在所述休眠状态下,所述终端子***的定位单元不再获取所述移动终端的当前位置信息和速度信息。
进一步地,所述在所述当前位置信息和/或速度信息满足预设的参数的要求时,在所述业务管理平台子***的控制下进入休眠模式包括:
当所述移动终端的行进速度低于第一阈值时,进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;
所述第一休眠模式下,在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向所述业务管理平台子***上报所述移动终端的当前位置信息;所述第二休眠模式下,在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2向所述业务管理平台子***上报所述移动终端的当前位置信息。
进一步地,还包括:
向所述蜂窝物联网子***发起服务请求触发启用非接入层NAS协议用于发送数据,在上报当前位置信息时,将IP数据包封装到NAS协议数据单元,建立控制面数据传输流程,建立无线承载连接后通过附着网络,将NAS协议数据单元传输到eNB,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述通信单元和所述MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输。
本公开实施例还提供了一种定位追踪设备,包括存储器、处理器及存储 在所述存储器上并可在所述处理器上运行的计算机程序;所述处理器执行所述程序时实现如上所述的定位追踪方法。
本公开实施例还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时实现如上所述的定位追踪方法中的步骤。
本公开的实施例具有以下有益效果:
上述方案中,业务管理平台子***根据移动终端所处场景位置的不同,精细化调整位置获取及通信的频次,配合休眠机制实现移动终端超长待机能力。确保定位信息准确有效传递的同时,精细化降低移动终端获取冗余的定位信息的次数,最大化降低终端子***的功耗,以此实现移动终端长达数年不用更换蓄电池。并且采用蜂窝物联网进行通信,有效利用了蜂窝小区的广覆盖、海量接入的能力。
为了更清楚地说明本公开实施例的技术方案,下面将对本公开实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本公开实施例低功耗定位追踪***的结构框图;
图2为本公开实施例终端子***的结构框图;
图3为本公开实施例蜂窝物联网子***的结构框图;
图4为本公开实施例业务管理平台子***的结构框图;
图5为本公开实施例NB-IoT无线帧的示意图;
图6为本公开实施例定位追踪方法的流程示意图。
为使本公开的实施例要解决的技术问题、技术方案和优点更加清楚,下面将结合附图及具体实施例进行详细描述。
本公开的实施例提供一种用于移动通信的定位追踪方法及低功耗定位追踪***,能够降低移动终端的功耗。
本公开的实施例提供一种低功耗定位追踪***,如图1所示,包括:
设置在移动终端上的终端子***,用于周期性获取所述移动终端的当前位置信息和速度信息,并通过蜂窝物联网子***将所述当前位置信息和速度信息发送至业务管理平台子***;
所述蜂窝物联网子***,用于连接所述终端子***和所述业务管理平台子***;
所述业务管理平台子***,用于根据所述当前位置信息、速度信息以及预设的休眠模式参数控制所述终端子***是否进入休眠模式;
在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
本实施例中,业务管理平台子***根据移动终端所处场景位置的不同,精细化调整位置获取及通信的频次,配合休眠机制实现移动终端超长待机能力。确保定位信息准确有效传递的同时,精细化降低移动终端获取冗余的定位信息的次数,最大化降低终端子***的功耗,以此实现移动终端长达数年不用更换蓄电池。并且采用蜂窝物联网进行通信,有效利用了蜂窝小区的广覆盖、海量接入的能力。
其中,业务管理平台子***可以与手机APP连接,用户可以通过手机APP向业务管理平台子***设置参数。
进一步地,如图2所示,所述终端子***包括:
定位单元,用于周期性获取所述移动终端的当前位置信息和速度信息;
通信单元,用于与所述蜂窝物联网子***建立通信,并通过所述蜂窝物联网子***将所述当前位置信息和速度信息发送至所述业务管理平台子***;
蓄电池单元,用于为各单元供电;
微控制处理单元,用于控制各单元的工作状态。
进一步地,如图2所示,终端子***还包括:传感单元、报警单元、存储单元、第三方接口单元、开关单元。
进一步地,如图3所示,所述蜂窝物联网子***包括:
基站eNB、移动性管理实体MME、服务网关S-GW、PDN网关P-GW。
进一步地,所述通信单元还用于与所述MME协商休眠模式参数。
进一步地,所述微控制处理单元具体用于控制所述通信单元在处于休眠状态时,关闭信号收发和接入功能,监听接收信号功率强度,并测量多个小区的抵达时间差,计算出所述移动终端的当前位置信息。
进一步地,所述蓄电池单元采用双电池电源的供电方式,为所述定位单元单独供电。
进一步地,如图4所示,所述业务管理平台子***包括:
数据转发单元,用于接收数据;
存储处理单元,用于存储和处理数据;
人机交互单元,用于接收用户输入的参数。
进一步地,所述休眠模式包括信标休眠模式,所述休眠模式参数包括预设的信标区域;
所述业务管理平台子***具体用于在所述移动终端进入预设的信标区域内,控制所述终端子***进入休眠状态,在所述休眠状态下,所述定位单元不再获取所述移动终端的当前位置信息和速度信息。
进一步地,所述休眠模式包括周期性休眠模式,所述周期性休眠模式包括第一休眠模式和第二休眠模式,所述休眠模式参数包括第一休眠模式参数和第二休眠模式参数;
所述终端子***用于在位于预设的信标区域外时,将所述移动终端的当前位置信息和速度信息发送给业务管理平台子***;
所述业务管理平台子***根据所述当前位置信息和速度信息判断所述移动终端的行进方式,当所述移动终端的行进速度低于第一阈值时,控制所述终端子***进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在移动终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,控制所述终端子***进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;
所述终端子***具体用于在所述不活动定时器时长T3超时后进入休眠 状态,并在所述心跳周期T4超时向所述业务管理平台子***上报所述移动终端的当前位置信息;或在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2向所述业务管理平台子***上报所述移动终端的当前位置信息。
进一步地,所述通信单元还用于发起服务请求触发启用非接入层NAS协议用于发送数据,在上报当前位置信息时,将IP数据包封装到NAS协议数据单元,建立控制面数据传输流程,建立无线承载连接后通过附着网络,将NAS协议数据单元传输到eNB,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述通信单元和所述MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输;
所述eNB用于通过专用控制信道DCCH向所述MME发送NAS信令请求消息,其中携带NAS信令标识和已经加密的上行用户数据;
所述MME用于通过承载标识获取到该数据包的末端位置,如果释放辅助信息指示不期待接收下行数据并且也没有上行数据需要传递,用户数据包末端位置传输结束后,MME立即释放无线承载连接。
本公开实施例还提供了一种用于移动通信的定位追踪方法,应用于业务管理平台子***,包括:
接收终端子***通过蜂窝物联网子***周期性上报的移动终端的当前位置信息和速度信息;
根据所述当前位置信息、速度信息以及预设的休眠模式参数控制所述终端子***是否进入休眠模式;
在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
本实施例中,业务管理平台子***根据移动终端所处场景位置的不同,精细化调整位置获取及通信的频次,配合休眠机制实现移动终端超长待机能力。确保定位信息准确有效传递的同时,精细化降低移动终端获取冗余的定 位信息的次数,最大化降低终端子***的功耗,以此实现移动终端长达数年不用更换蓄电池。并且采用蜂窝物联网进行通信,有效利用了蜂窝小区的广覆盖、海量接入的能力。
进一步地,所述休眠模式包括信标休眠模式,所述休眠模式参数包括预设的信标区域,所述根据所述当前位置信息、速度信息以及预设的休眠模式参数控制所述终端子***是否进入休眠模式包括:
在所述移动终端进入预设的信标区域内,控制所述终端子***进入休眠状态,在所述休眠状态下,所述终端子***的定位单元不再获取所述移动终端的当前位置信息和速度信息。
进一步地,还包括:
接收用户输入的信标区域。
进一步地,所述休眠模式包括周期性休眠模式,所述周期性休眠模式包括第一休眠模式和第二休眠模式,所述休眠模式参数包括第一休眠模式参数和第二休眠模式参数;所述根据所述当前位置信息、速度信息以及预设的休眠模式参数控制所述终端子***是否进入休眠模式包括:
在所述终端子***位于预设的信标区域外时,根据所述当前位置信息和速度信息判断所述移动终端的行进方式,当所述移动终端的行进速度低于第一阈值时,控制所述终端子***进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,控制所述终端子***进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;
其中,所述终端子***在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向上报所述移动终端的当前位置信息;或在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2上报所述移动终端的当前位置信息。
本公开实施例还提供了一种用于移动通信的定位追踪方法,应用于蜂窝物联网子***,包括:
将终端子***上报的移动终端的当前位置信息和速度信息发送至业务管理平台子***。
进一步地,还包括:
与所述终端子***协商休眠模式参数。
进一步地,还包括:
接收所述终端子***的触发启用非接入层NAS协议用于发送数据的服务请求,与所述终端子***建立控制面数据传输流程,建立无线承载连接,接收所述终端子***的NAS协议数据单元,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述通信单元和所述MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输;
控制eNB通过专用控制信道DCCH向MME发送NAS信令请求消息,其中携带NAS信令标识和已经加密的上行用户数据;
控制MME通过承载标识获取到该数据包的末端位置,如果释放辅助信息指示不期待接收下行数据并且也没有上行数据需要传递,用户数据包末端位置传输结束后,MME立即释放无线承载连接。
本公开实施例还提供了一种用于移动通信的定位追踪方法,应用于终端子***,包括:
周期性获取移动终端的当前位置信息和速度信息,并通过蜂窝物联网子***将所述当前位置信息和速度信息发送至业务管理平台子***;
在所述当前位置信息和/或速度信息满足预设的休眠模式参数的要求时,在所述业务管理平台子***的控制下进入休眠模式;
在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
本实施例中,业务管理平台子***根据移动终端所处场景位置的不同,精细化调整位置获取及通信的频次,配合休眠机制实现移动终端超长待机能 力。确保定位信息准确有效传递的同时,精细化降低移动终端获取冗余的定位信息的次数,最大化降低终端子***的功耗,以此实现移动终端长达数年不用更换蓄电池。并且采用蜂窝物联网进行通信,有效利用了蜂窝小区的广覆盖、海量接入的能力。
进一步地,还包括:
与所述蜂窝物联网子***的MME协商休眠模式参数。
进一步地,在处于休眠状态时,关闭信号收发和接入功能,监听接收信号功率强度,并测量多个小区的抵达时间差,计算出所述移动终端的当前位置信息。
进一步地,所述在所述当前位置信息和/或速度信息满足预设的休眠模式参数的要求时,在所述业务管理平台子***的控制下进入休眠模式包括:
在所述移动终端进入预设的信标区域内,进入休眠状态,在所述休眠状态下,所述终端子***的定位单元不再获取所述移动终端的当前位置信息和速度信息。
进一步地,所述在所述当前位置信息和/或速度信息满足预设的休眠模式参数的要求时,在所述业务管理平台子***的控制下进入休眠模式包括:
当所述移动终端的行进速度低于第一阈值时,进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;
所述第一休眠模式下,在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向所述业务管理平台子***上报所述移动终端的当前位置信息;所述第二休眠模式下,在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2向所述业务管理平台子***上报所述移动终端的当前位置信息。
进一步地,还包括:
向所述蜂窝物联网子***发起服务请求触发启用非接入层NAS协议用 于发送数据,在上报当前位置信息时,将IP数据包封装到NAS协议数据单元,建立控制面数据传输流程,建立无线承载连接后通过附着网络,将NAS协议数据单元传输到eNB,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述通信单元和所述MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输。
下面结合附图以及具体的实施例对本公开的技术方案进行进一步介绍:
本实施例充分考虑定位追踪应用对通信频次的需求,以及移动终端的有效无线连接承载时长,针对相关技术中的定位追踪方法在低功耗方面的不足,提出一种低功耗定位追踪方案,主要利用网络基站定位数据,在确保定位信息准确有效传递的同时,根据移动终端所处位置的不同,结合移动终端的信标场景和位移变化情况,精细化调节位置获取频次,降低移动终端冗余通信过程,并配合休眠机制实现移动终端超长待机能力,以此实现移动终端长达数年不用更换蓄电池。
低功耗定位追踪***由终端子***、蜂窝物联网子***、业务管理平台子***构成。终端子***和业务管理平台子***之间通过蜂窝物联网子***连接。本实施例的主要应用场景是物资防丢、人员搜寻等难以频繁更换电池,也不需要实时获取精确定位信息的场景,较低频次的定位信息就足以掌握定位对象的大致位置。
其中,终端子***安装在移动终端上,终端子***的定位单元,用于周期性获取移动终端当前位置信息,其输出数据中包括移动终端的当前位置信息和速度信息;
终端子***的通信单元,与所处蜂窝物联网小区基站eNB建立无线资源承载,入网后完成移动终端附着并注册网络。通信单元通过附着请求消息携带休眠模式参数(休眠模式参数包括不活动定时器时间和心跳周期时间间隔,不连续接收模式参数包括扩展寻呼周期和可寻呼窗口时间间隔)和核心网 MME协商,如果MME中没有更高优先级的本地配置的时长,即设置定时参数为当前协商值。在休眠状态下(非可寻呼窗口期间、或者不活动定时器到时之后),移动终端的通信单元关闭信号收发和接入功能,移动终端微控制处理单元赋值指示各工作单元进入休眠,从而减少天线、射频、信令处理等的功耗消耗,但在网络处于注册状态。同时,通信单元监听接收信号功率强度,并测量多个小区的抵达时间差(OTDOA),计算出移动终端当前的位置信息。
终端子***的蓄电池单元,采用双电池电源的供电方式,为定位单元单独供电。即使由于第三方接口的功能使用频率高而没电后,定位单元还能在工作,使得终端子***至少具备定位功能。
终端子***的微控制处理单元,控制终端子***各单元协同工作,使终端子***至少包含多种工作模式:
1)信标休眠模式
需要防丢定位的人、宠、物等在一天内的大部分时间是在某些特定位置的,为这些常去的地方放上信标,当定位对象进入信标范围内,则进入超低功耗的休眠模式,此模式下不需要获取定位信息,最大化地减小电能消耗。比如,宠物大部分时间都是在家里或者特定的活动场所。
表1用户在手机APP上为宠物按照时段、日历设置常用的信标区域
时段 | 时间 | 周一 | 周二 | 周三 | 周四 | 周五 | 周六 | 周日 |
清晨 | 07:00 | 公园 | 家 | 公园 | 家 | 公园 | 公园 | 家 |
上午 | 09:00 | 家 | 家 | 家 | 家 | 家 | 小区 | 公园 |
中午 | 12:00 | 家 | 家 | 家 | 家 | 家 | 小区 | 家 |
下午 | 14:00 | 家 | 家 | 家 | 家 | 家 | 公园 | 家 |
傍晚 | 18:00 | 家 | 家 | 家 | 家 | 家 | 小区 | 公园 |
晚上 | 20:00 | 小区 | 小区 | 小区 | 小区 | 小区 | 小区 | 家 |
夜间 | 00:00 | 家 | 家 | 家 | 家 | 家 | 家 | 家 |
2)周期性休眠模式
当定位移动终端离开安全信标区域,终端子***将移动终端当前的位置、 速度信息通过通信单元上传至业务管理平台子***,业务管理平台子***根据移动终端的当前位置、速度判断行进方式,并以最低功耗开销,适时采集定位信息。
当监测到定位对象以步行速度行驶的时候,终端子***工作模式开启为PSM(power saving mode,节能模式)模式,即上述第一休眠模式,PSM长周期休眠模式参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在终端子***RRC连接释放后启动,超时后终端子***保持深度睡眠以降低功耗,终端子***每到心跳周期T2超时被唤醒,获取并上报当前位置坐标信息。
当检测到定位对象以车载速度行驶的时候,终端子***工作模式切换为eDRX(extended Discontinuous Reception,扩展非连续接收)模式,即上述第二休眠模式,为精细化定位,心跳周期缩短为较短周期,较高频率地获取高速运动的定位对象在非信标区域的适时位置信息。不连续接收模式参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1。寻呼窗口内以一定寻呼间隔和蜂窝物联网的eNB建立无线承载,终端子***的通信单元保持激活状态,而寻呼窗口之外的时间终端子***保持深度睡眠以降低功耗。
在相关技术中,由于网络基站单元eNB无法预知终端子***是否有数据需要发送,网络侧为了防止反复拆除无线链路带来的大量冗余信令负荷(信令风暴),在移动终端完成业务传输后,无线通信链路总是会保持一段时间再释放。该段时间内移动终端仍处于无线链路连接状态,导致移动终端不得不为此消耗一定电量。因此,对功耗极为敏感的定位移动终端,要想进一步延长电量使用时长,十分有必要优化此过程。本公开就针对移动终端的RRC无线链路释放定时器过长的问题提出优化方案,缩短无线链路连接时间。
首先,终端子***的通信单元发起服务请求触发启用非接入层NAS协议用于发送数据。NAS协议定义的帧格式包括协议指示、承载标识(ID)、过程事务标识、用户数据段。协议指示用于指示网络需要触发控制面优化来传输用户数据,UE和MME之间使用NAS消息来传输用户数据;承载ID用于指示用户数据的末端位置;过程事务ID用于携带释放辅助信息,用于指示在 此上行数据传输之后是否期待有下行数据传输(例如上行数据的确认和响应)。
接着,当定位移动终端上报定位信息时,通信单元将IP数据包封装到NAS协议数据单元,建立控制面数据传输流程。
接着,通信单元建立无线承载连接后通过附着网络,将通过NAS协议数据单元传输到网络基站单元eNB,eNB通过专用控制信道DCCH向蜂窝物联网单元MME发出NAS信令请求消息,其中上行携带NAS信令标识和已经加密的上行用户数据。
接着,MME通过承载标识获取到该数据包的末端位置。如果释放辅助信息指示不期待接收下行数据并且也没有上行数据需要传递,用户数据包末端位置传输结束后,MME立即释放无线承载连接。避免基站eNB采用相关技术的通用定时方式对低功耗移动终端造成的无线承载连接时间。移动终端立刻退出连接态并启动PSM定时器,到时后马上进入睡眠态,减少了业务连接态的功耗。图5为非接入层NAS协议帧格式定义示意图。
如图6所示,一具体实施例的定位追踪方法具体包括以下步骤:
步骤1:用户在人机交互单元设置关联的定位追踪装置(即包括终端子***的移动终端),并根据上午、下午、晚上等时段和日历情况,设置常用的场景位置坐标{A1,A2,…,An},其中,An=(Xn,Yn)。将这些常去的安全区域设置为信标区域,例如:公园、家、小区等。同样的,用户可以设置非安全区域作为信标区域。
步骤2、移动终端上电初始化,查找所处小区基站信号,并在附着消息中携带PSM模式定时器参数(不活动定时器时长T3和心跳周期T4),和eDRX模式的定时器参数(寻呼周期时间间隔T1和寻呼窗口时间间隔T2)。接收信号功率指示功能,以实现设备当前的接收功率由接收信号携带的信号强度指示参考值提供,信号强度指示参考值的抽样频率为1s。
步骤3:移动终端的终端子***将移动终端的当前位置信息、速度信息通过通信单元上传至业务管理平台子***,业务管理平台子***可根据当前位置、速度的大小判断行进方式及启动对应的工作模式,并获取定位追踪装置的当前位置坐标信息。人的步行速度一般在4-10公里/小时,则可选地,以 小于10公里/小时的速度判定为步行,10公里/小时以上的速度则判定为乘车。
启动静止模式:
当前位置坐标与信标坐标的差值Lxn=|Xo-Xn|,Lyn=|Yo–Yn|,判断Lxn或Lyn是否小于阈值L,并持续一段时间T0。
当Lxn或Lyn小于阈值L说明移动终端进入信标区域。终端子***启动静止模式,保持整机休眠降低功耗。
启动PSM:
当获取的定位坐标距离信标坐标大于阈值L,说明定位对象正离开信标区域,终端子***启动PSM模式,移动终端周期性退出休眠,但在网络中处于注册状态。可选地,心跳周期T4设为较长周期,例如10分钟,即10分钟获取1次定位信息就足以掌握定位对象的大致位置。
出现心跳周期T4超时,移动终端被唤醒,与eNB建立RRC无线承载后将获取到的当前位置信息上报给蜂窝物联网eNB,数据传输结束RRC连接释放后定时器超时后再次进入休眠状态。
终端子***继续获取移动终端的当前位置信息。
启动eDRX模式:
当检测到定位对象以车载速度行驶的时候,终端子***工作模式切换为eDRX模式,同时心跳周期缩短为较短周期,例如2分钟。
业务服务平台子***以寻呼周期T1为间隔,发起位置获取请求,蜂窝物联网子***的S-GW在非寻呼窗口接收到下行数据,会缓存数据包,待移动终端进入寻呼时间窗口T2,蜂窝物联网子***的MME寻呼移动终端并触发建立空口连接,转发请求数据包给移动终端。
移动终端响应请求,将当前位置信息上报给蜂窝物联网子***的eNB,经过核心网各单元转发后传递到业务管理平台子***。存储处理单元进行位置坐标的判断分析,如果移动终端处于非信标区域,且获取位置坐标值变化,则在寻呼时间间隔T1超时后,再次发起位置获取请求,继续获取移动终端的位置坐标。
本公开能够实现不同的定位场景对通信频次的差异化调节,创新性设计 的精细化调节定位数据获取频次的方法,能够降低移动终端冗余通信过程,并配合休眠机制实现低功耗定位。本公开创新性地应用专用控制信道DCCH上报定位移动终端网络数据,设计了一种NAS协议帧格式,网络管理单元MME能够根据帧标识准确找到移动终端上报数据包有效数据位末端位置,高效缩短相关技术中的基站技术造成的无效的无线承载连接时间。本公开的休眠模式包括信标休眠模式和长周期休眠模式、不连续接收休眠模式的设计方法,其中不连续接收休眠模式能够区分步行和车载前进的定位场景。本公开通过测量多基站小区的信号抵达时间差计算出移动终端当前的位置信息,并根据移动终端所处位置的不同,移动速度的不同,准确有限的传递定位信息,并实现移动终端的超长待机。
本公开实施例还提供了一种定位追踪设备,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;所述处理器执行所述程序时实现如上所述的定位追踪方法。
本公开实施例还提供了一种计算机可读存储介质,其上存储有计算机程序,该程序被处理器执行时实现如上所述的定位追踪方法中的步骤。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括,但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带,磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质,可用于存储可以被计算设备访问的信息。按照本文中的界定,计算机可读介质不包括暂存电脑可读媒体(transitory media),如调制的数据信号和载波。
可以理解的是,本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字 信号处理器(Digital Signal Processing,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
以上所述是本公开的可选的实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本公开所述原理的前提下,还可以作出若干改进和润饰,这些改进和润饰也应视为本公开的保护范围。
Claims (25)
- 一种低功耗定位追踪***,包括:设置在移动终端上的终端子***,用于周期性获取所述移动终端的当前位置信息和速度信息,并通过蜂窝物联网子***将所述当前位置信息和速度信息发送至业务管理平台子***;所述蜂窝物联网子***,用于连接所述终端子***和所述业务管理平台子***;所述业务管理平台子***,用于根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式;在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
- 根据权利要求1所述的低功耗定位追踪***,其中,所述终端子***包括:定位单元,用于周期性获取所述移动终端的当前位置信息和速度信息;通信单元,用于与所述蜂窝物联网子***建立通信,并通过所述蜂窝物联网子***将所述当前位置信息和速度信息发送至所述业务管理平台子***;蓄电池单元,用于为各单元供电;微控制处理单元,用于控制各单元的工作状态。
- 根据权利要求2所述的低功耗定位追踪***,其中,所述蜂窝物联网子***包括:基站eNB、移动性管理实体MME、服务网关S-GW、PDN网关P-GW。
- 根据权利要求3所述的低功耗定位追踪***,其中,所述通信单元还用于与所述MME协商参数。
- 根据权利要求2所述的低功耗定位追踪***,其中,所述微控制处理单元具体用于控制所述通信单元在处于休眠状态时,关闭信号收发和接入功能,监听接收信号功率强度,并测量多个小区的抵达时间差,计算出所述移动终端的当前位置信息。
- 根据权利要求2所述的低功耗定位追踪***,其中,所述蓄电池单元采用双电池电源的供电方式,为所述定位单元单独供电。
- 根据权利要求1所述的定位追踪***,其中,所述业务管理平台子***包括:数据转发单元,用于接收数据;存储处理单元,用于存储和处理数据;人机交互单元,用于接收用户输入的参数。
- 根据权利要求2所述的低功耗定位追踪***,其中,所述休眠模式包括信标休眠模式;所述业务管理平台子***具体用于在所述移动终端进入预设的信标区域内,控制所述终端子***进入休眠状态,在所述休眠状态下,所述定位单元不再获取所述移动终端的当前位置信息和速度信息。
- 根据权利要求1所述的低功耗定位追踪***,其中,所述休眠模式包括周期性休眠模式,所述周期性休眠模式包括第一休眠模式和第二休眠模式;所述终端子***用于在位于预设的信标区域外时,将所述移动终端的当前位置信息和速度信息发送给业务管理平台子***;所述业务管理平台子***根据所述当前位置信息和速度信息判断所述移动终端的行进方式,当所述移动终端的行进速度低于第一阈值时,控制所述终端子***进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在移动终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,控制所述终端子***进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;所述终端子***具体用于在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向所述业务管理平台子***上报所述移动终端的当前位置信息;或在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2向所述业务管理平台子***上报所述移动终端的当前位置信息。
- 根据权利要求3所述的低功耗定位追踪***,其中,所述通信单元还用于发起服务请求触发启用非接入层NAS协议用于发送数据,在上报当前位置信息时,将IP数据包封装到NAS协议数据单元,建立控制面数据传输流程,建立无线承载连接后通过附着网络,将NAS协议数据单元传输到eNB,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述通信单元和所述MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输;所述eNB用于通过专用控制信道DCCH向所述MME发送NAS信令请求消息,其中携带NAS信令标识和已经加密的上行用户数据;所述MME用于通过承载标识获取到该数据包的末端位置,如果释放辅助信息指示不期待接收下行数据并且也没有上行数据需要传递,用户数据包末端位置传输结束后,MME立即释放无线承载连接。
- 一种用于移动通信的定位追踪方法,应用于业务管理平台子***,包括:接收终端子***通过蜂窝物联网子***周期性上报的移动终端的当前位置信息和速度信息;根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式;在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
- 根据权利要求11所述的定位追踪方法,其中,所述休眠模式包括信标休眠模式,所述根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式包括:在所述移动终端进入预设的信标区域内,控制所述终端子***进入休眠状态,在所述休眠状态下,所述终端子***的定位单元不再获取所述移动终端的当前位置信息和速度信息。
- 根据权利要求11所述的定位追踪方法,还包括:接收用户输入的信标区域。
- 根据权利要求11所述的定位追踪方法,其中,所述休眠模式包括周期性休眠模式,所述周期性休眠模式包括第一休眠模式和第二休眠模式;所述根据所述当前位置信息、速度信息控制所述终端子***是否进入休眠模式包括:在所述终端子***位于预设的信标区域外时,根据所述当前位置信息和速度信息判断所述移动终端的行进方式,当所述移动终端的行进速度低于第一阈值时,控制所述终端子***进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,控制所述终端子***进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;其中,所述终端子***在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向上报所述移动终端的当前位置信息;或在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2上报所述移动终端的当前位置信息。
- 一种定位追踪方法,应用于蜂窝物联网子***,包括:将终端子***上报的移动终端的当前位置信息和速度信息发送至业务管理平台子***。
- 根据权利要求15所述的定位追踪方法,还包括:与所述终端子***协商参数。
- 根据权利要求15所述的定位追踪方法,还包括:接收所述终端子***的触发启用非接入层NAS协议用于发送数据的服务请求,与所述终端子***建立控制面数据传输流程,建立无线承载连接,接收所述终端子***的NAS协议数据单元,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述终端子***的通信单 元和MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输;控制eNB通过专用控制信道DCCH向MME发送NAS信令请求消息,其中携带NAS信令标识和已经加密的上行用户数据;控制MME通过承载标识获取到数据包的末端位置,如果释放辅助信息指示不期待接收下行数据并且也没有上行数据需要传递,用户数据包末端位置传输结束后,MME立即释放无线承载连接。
- 一种定位追踪方法,应用于终端子***,包括:周期性获取移动终端的当前位置信息和速度信息,并通过蜂窝物联网子***将所述当前位置信息和速度信息发送至业务管理平台子***;在所述当前位置信息和/或速度信息满足预设的参数的要求时,在所述业务管理平台子***的控制下进入休眠模式;在所述休眠模式下,所述终端子***获取所述移动终端的当前位置信息和速度信息的频次降低。
- 根据权利要求18所述的定位追踪方法,还包括:与所述蜂窝物联网子***的MME协商参数。
- 根据权利要求18所述的定位追踪方法,其中,在处于休眠状态时,关闭信号收发和接入功能,监听接收信号功率强度,并测量多个小区的抵达时间差,计算出所述移动终端的当前位置信息。
- 根据权利要求18所述的定位追踪方法,其中,所述在所述当前位置信息和/或速度信息满足预设的参数的要求时,在所述业务管理平台子***的控制下进入休眠模式包括:在所述移动终端进入预设的信标区域内,进入休眠状态,在所述休眠状态下,所述终端子***的定位单元不再获取所述移动终端的当前位置信息和速度信息。
- 根据权利要求18所述的定位追踪方法,其中,所述在所述当前位置信息和/或速度信息满足预设的参数的要求时,在所述业务管理平台子***的 控制下进入休眠模式包括:当所述移动终端的行进速度低于第一阈值时,进入第一休眠模式,所述第一休眠模式的参数包括不活动定时器时长T3和心跳周期T4,其中,不活动定时器在终端RRC连接释放后启动;或在所述移动终端的行进速度大于第二阈值时,进入第二休眠模式,所述第二休眠模式的参数包括寻呼周期时间间隔T1和寻呼窗口时间间隔T2,其中,T2<T1;所述第一休眠模式下,在所述不活动定时器时长T3超时后进入休眠状态,并在所述心跳周期T4超时向所述业务管理平台子***上报所述移动终端的当前位置信息;所述第二休眠模式下,在寻呼周期时间间隔T1内以所述寻呼窗口时间间隔T2向所述业务管理平台子***上报所述移动终端的当前位置信息。
- 根据权利要求18所述的定位追踪方法,还包括:向所述蜂窝物联网子***发起服务请求触发启用非接入层NAS协议用于发送数据,在上报当前位置信息时,将IP数据包封装到NAS协议数据单元,建立控制面数据传输流程,建立无线承载连接后通过附着网络,将NAS协议数据单元传输到eNB,所述NAS协议数据单元的帧格式包括协议指示、承载标识、过程事务标识、用户数据段,所述协议指示用于指示网络需要触发控制面优化来传输用户数据,所述终端子***的通信单元和所述蜂窝物联网子***的MME之间使用NAS消息来传输用户数据;所述承载标识用于指示用户数据的末端位置;所述过程事务标识用于携带释放辅助信息,用于指示在此上行数据传输之后是否期待有下行数据传输。
- 一种定位追踪设备,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序;其中,所述处理器执行所述程序时实现如权利要求11-14中任一项所述的定位追踪方法或实现如权利要求15-17中任一项所述的定位追踪方法或实现如权利要求18-23中任一项所述的定位追踪方法。
- 一种计算机可读存储介质,其上存储有计算机程序,其中,该程序被处理器执行时实现如权利要求11-14中任一项所述的定位追踪方法或实现 如权利要求15-17中任一项所述的定位追踪方法或实现如权利要求18-23中任一项所述的定位追踪方法中的步骤。
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