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WO2021080035A1 - Dispositif ido et système de communication comprenant un dispositif ido - Google Patents

Dispositif ido et système de communication comprenant un dispositif ido Download PDF

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Publication number
WO2021080035A1
WO2021080035A1 PCT/KR2019/014020 KR2019014020W WO2021080035A1 WO 2021080035 A1 WO2021080035 A1 WO 2021080035A1 KR 2019014020 W KR2019014020 W KR 2019014020W WO 2021080035 A1 WO2021080035 A1 WO 2021080035A1
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WIPO (PCT)
Prior art keywords
iot
category
communication
iot device
base station
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2019/014020
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English (en)
Korean (ko)
Inventor
김용오
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LG Electronics Inc
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LG Electronics Inc
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Publication date
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Priority to PCT/KR2019/014020 priority Critical patent/WO2021080035A1/fr
Publication of WO2021080035A1 publication Critical patent/WO2021080035A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04W4/50—Service provisioning or reconfiguring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • 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 invention relates to an IOT device and a wireless communication system including an IOT device, and more particularly, to a communication category (IOT communication category) of an IOT device.
  • IoT Internet Of Things, Internet of Things
  • IoT may mean a wireless communication technology that connects to the Internet by embedding communication functions in various objects such as home appliances, mobile devices, wearable devices, and tracking devices.
  • Mobile communication technology has been developed with a focus on transmitting a larger amount of data, but in recent years, communication technology for transmitting a small amount of data has also been developed so that communication resources can be efficiently shared by many devices.
  • IOT devices have been developed to use cellular communication technology, and a technology has been developed that allows additional use of IOT communication through software while using an existing mobile network. Accordingly, the current IOT is rapidly spreading around existing mobile communication providers, and IOT devices can be connected through a mobile communication network such as 4G (or LTE), which is expanding around the world, so that IOT devices with more various uses are available. It is being released, and it is expanding its base by meeting 5G communication technology.
  • 4G or LTE
  • the currently used IOT communication technology allows the IOT device to communicate according to any one of categories divided based on communication characteristics and performance, such as bandwidth and data rate.
  • [Table 1] below shows examples of these IOT communication categories.
  • the categories listed in the following [Table 1] show some of the IOT communication categories, and the actual IOT communication category may be composed of more and various categories than the following [Table 1].
  • Cat.1 Cat. M1 Cat.NB1 3GPP Release Release 8 Release 13 Release 13 Peak data rate DL: 10Mbps UL: 5Mbps DL: 1Mbps UL: Mbps DL: 20 kbps UL: 60 kbps Bandwidth 20 MHz 1.4 MHz 180 kHz Rx Antenna Dual Rx Single Rx Single Rx Duplex mode FDD/TDD Half-FDD/TDD Half-FDD Transmit Power +23 dBm +23 or +20 dBm +23 or +20 dBm Mobility Full Full Stationary Voice Yes Yes/No No Taget applications Low-end MBBMTCWearables MTCWearables Sensor-like MTC MBB: Mobile BroadbandMTC: Machine Type Communications 3GPP: 3rd Generation Partnership project: Standardization Organization
  • IOT communication category NB1 which has a data rate of 20 kbps or less, is suitable for measuring instruments or IOT devices for meters with very small data transmission.
  • the data transmission rate that is, the data transmission rate is too slow, so it is not suitable for data transmission for software upgrade, and there is a problem that software update using FOTA (Firmware Over The Air) is impossible.
  • FOTA Firmware Over The Air
  • An object of the present invention is to provide an IOT device capable of providing various IOT services regardless of a pre-designated IOT communication category, and a communication system including the IOT device.
  • Another object of the present invention is to provide an IOT device capable of efficiently managing power consumption by efficiently managing a set IOT communication category.
  • the IOT device determines whether a communication unit for performing wireless communication with the base station and a preset IOT communication category change condition is satisfied. And, if the change condition is satisfied, information on a specific IOT communication category corresponding to the satisfied change condition is transmitted to the base station, and in response to the information on the specific IOT communication category from the base station, the specific IOT And a control unit for controlling the communication unit to connect wireless communication with the base station according to the specific IOT communication category when a request for changing a category to a communication category is received.
  • the change condition includes at least one of an operation state of the IOT device or remaining battery power of the IOT device
  • the control unit includes information on different IOT communication categories according to different change conditions. And controlling the communication unit to be transmitted to the base station.
  • control unit terminates a Radio Resource Control (RRC) connection and an Evolved Packet System (ECM) Connection Management (ECM) connection connected to the base station when a request to change the category to the specific IOT communication category is received. And, it characterized in that performing RRC connection and ECM connection according to the specific IOT communication category.
  • RRC Radio Resource Control
  • ECM Evolved Packet System
  • control unit upon receiving a request to change a category to the specific IOT communication category, cancels at least one bearer formed with the base station, and at least one bearer according to the specific IOT communication category. And forming with the base station.
  • the information on the specific IOT communication category further includes information on at least one other IOT communication category supported by the IOT device, and the category change request received from the base station is the specific IOT It characterized in that it includes information on any one of the communication category and at least one further included IOT communication category.
  • the controller determines whether the IOT communication category included in the received category change request is acceptable, and transmits a response message or a rejection message to the base station according to the determination result. And, the determination of whether it is acceptable is whether the IOT device supports the IOT communication category included in the category change request, or whether the IOT communication category included in the category change request corresponds to a function or operation state required by the IOT device. It characterized in that it is determined according to whether or not it conforms.
  • control unit compares a specific IOT communication category corresponding to the satisfied change condition with an IOT communication category in which the IOT device is currently connected to a base station, and the specific IOT communication category according to the comparison result. It is characterized in that the information is transmitted to the base station.
  • control unit when a request to change a category to the specific IOT communication category is received, resets the communication category set in the IOT device to the specific IOT communication category, and reboots the IOT device. do.
  • the IOT device determines whether a communication unit for performing wireless communication with the base station and a preset IOT communication category change condition is satisfied. And, if the change condition is satisfied, the communication connection with the base station is terminated, the IOT communication category is reset according to the IOT communication category corresponding to the satisfied change condition, and the communication with the base station is reset according to the reset IOT communication category. It characterized in that it comprises a control unit for controlling the communication unit to perform the communication connection again.
  • the change condition includes at least one of an operation state of the IOT device or a battery remaining power of the IOT device
  • the control unit comprises an IOT communication category of the IOT device based on different change conditions. It is characterized in that the reset is different from each other.
  • the IOT device is a personal mobile device
  • the control unit detects whether the IOT device is in a stationary state or a moving state, and communicates according to a different IOT communication category with the base station based on the detection result. It characterized in that the communication unit is controlled to be connected.
  • control unit determines that the movement of the IOT device is stopped when the IOT device is in a stopped state for more than a preset time, and after determining that the movement of the IOT device is stopped, the IOT communication It is characterized by resetting the category.
  • the IOT communication system determines whether a preset IOT communication category change condition is satisfied, and when the change condition is satisfied.
  • a base station that transmits a communication category change request to a specific IOT communication category to the connected at least one IOT device, and when the communication category change request is received, the communication category is set to the specific IOT communication category according to the received communication category change request.
  • at least one IOT device that resets and performs communication connection with the base station according to the specific IOT communication category.
  • the base station is characterized in that when the IOT service requested from the IOT server is a preset service, or determines whether the IOT communication category change condition is satisfied according to the size of data to be transmitted to the IOT device. To do.
  • the present invention enables communication between the IOT device and the base station or the IOT device itself, by allowing the IOT communication category set in the IOT device to be changed to another category, and thus the IOT communication category preset in the IOT device. It has the advantage of allowing the IOT device to provide more diverse IOT services regardless of whether or not.
  • the present invention changes the IOT communication category preset in the IOT device according to the state of the IOT device, so that the power consumed by the IOT device can be more efficiently managed. It has the effect of doing it.
  • FIG. 1 is a conceptual diagram showing the structure of an IOT device related to the present invention and a communication system including the IOT device.
  • 2A is a flowchart illustrating a process of connecting wireless communication with a base station according to a predetermined IOT communication category by an IOT device.
  • 2B is a conceptual diagram illustrating an example of a user plane and a control plane of an IOT device connected to an IOT server according to a predetermined IOT communication category.
  • FIG. 3 is a flowchart illustrating a process of changing an IOT communication category according to a request from an IOT device and connecting to a base station according to the changed communication category according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a process in which a communication category of an IOT device is changed according to a request from a base station in a communication system according to an embodiment of the present invention, and a base station and an IOT device are connected according to the changed communication category.
  • FIG. 5 is a flowchart illustrating a process in which an IOT device according to an embodiment of the present invention changes an IOT communication category by itself and connects to a base station according to the changed communication category.
  • IOT devices described herein include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistants (PDA), a portable multimedia player (PMP), a navigation system, and a slate PC.
  • PDA personal digital assistants
  • PMP portable multimedia player
  • slate PC slate PC
  • Tablet PC tablet PC
  • ultrabook ultrabook
  • wearable device wearable device, for example, smartwatch, glass-type terminal (smart glass), HMD (head mounted display)
  • HMD head mounted display
  • the IOT device may include a digital TV, a desktop computer, and a digital signage.
  • FIG. 1 is a conceptual diagram showing a structure of an Internet Of Things (IOT) device related to the present invention and a communication system including the IOT device.
  • IOT Internet Of Things
  • the IOT device 10 may be connected to at least one base station (eNodeB, 20) through wireless communication.
  • the eNodeB 20 is an Evolved Packet Core (EPC) including a Mobility Management Entity (MME) 31, a Home Subscriber Server (HSS) 32, and a Serving-GateWay / Packet data network GateWay (S-GW/PGW) 33).
  • EPC Evolved Packet Core
  • MME Mobility Management Entity
  • HSS Home Subscriber Server
  • S-GW/PGW Serving-GateWay / Packet data network GateWay
  • the eNodeB 20 and the EPC 30 may be collectively referred to as a base station.
  • the IOT device 10 is a control unit 100 and a communication unit 110 connected to the control unit 100 and controlled by the control unit 100 And a memory 120.
  • the communication unit 110 may connect the eNodeB 20 and wireless communication.
  • the communication unit 110 may perform wireless communication with the eNodeB 20 according to any one of the preset IOT communication categories, and accordingly, the maximum transmission rate of data exchanged with the eNodeB 20 is eNodeB 20 ) Can be determined according to the connected IOT communication category.
  • the bandwidth is 180KHz
  • the download speed is up to 20Kbps
  • the upload speed is up to 60Kbps. You can do it.
  • the memory 120 stores data supporting various functions of the IOT device 10.
  • the memory 120 may store a plurality of application programs or applications driven by the IOT device 10, data for the operation of the IOT device 10, and instructions. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the IOT device 10 from the time of shipment for basic functions of the IOT device 10. Meanwhile, the application program may be stored in the memory 120, installed on the IOT device 10, and driven by the control unit 100 to perform an operation (or function) of the IOT device 10.
  • control unit 100 In addition to the operation related to the application program, the control unit 100 generally controls the overall operation of the IOT device 10.
  • the control unit 100 processes signals, data, information, etc. input or output through the communication unit 110 or other components (not shown) provided in the IOT device, or drives an application program stored in the memory 120 By doing so, it is possible to provide or process IOT services.
  • the controller 100 may connect wireless communication with the eNodeB 20 according to an IOT communication category preset in the IOT device 10.
  • an IOT communication category preset in the IOT device 10.
  • FIGS. 2A and 2B Let's look at it in more detail with reference.
  • the memory 120 of the IOT device 10 may include information on a plurality of IOT communication categories.
  • the memory 120 may include information corresponding to a category change condition corresponding to each of the plurality of IOT communication categories. That is, the information on each IOT communication category may include category change conditions corresponding to each IOT communication category.
  • control unit 100 may determine whether a specific category change condition is satisfied based on the category change conditions, and when the specific category change condition is satisfied, the IOT communication category corresponding to the satisfied category change condition is selected. Can be detected.
  • the category change condition may include information on the operation state of the IOT device or the remaining battery power of the IOT device. Accordingly, the controller 100 may detect any one IOT communication category corresponding to at least one of a current operation state of the IOT device or the remaining battery power of the IOT device from among the plurality of IOT communication categories.
  • the control unit 100 exchanges a preset message with the eNodeB 20 to set the IOT communication category preset in the IOT device 10 to the detected IOT communication category. Can be changed to. As described above, a process of changing the IOT communication category through the exchange of a preset message with the eNodeB 20 will be described in more detail with reference to FIG. 3 below.
  • the change of the IOT communication category may be performed not only by the IOT device 10 but also by the base station.
  • the EPC 30 may collectively change the IOT communication category of at least one IOT device 10 connected to the at least one eNodeB 20.
  • a process of changing the IOT communication category of the IOT device 10 according to the request of the base station will be described in more detail with reference to FIG. 4 below.
  • FIG. 2A is a flowchart illustrating a process of connecting wireless communication with a base station according to a predetermined IOT communication category by an IOT device.
  • the IOT device may perform wireless communication with the eNodeB 20 according to a preset IOT communication category. Accordingly, the control unit 100 of the IOT device 10 according to an embodiment of the present invention detects the IOT communication category set as default in the IOT device 10 from the memory 120 when the power is turned on, and detects the detected basic IOT. Depending on the communication category, the eNodeB 20 and wireless communication may be connected.
  • FIG. 2A is a diagram illustrating an example in which the IOT device 10 according to an embodiment of the present invention has a default IOT communication category of NB1 for convenience of description.
  • the controller 100 of the IOT device 10 may perform a Radio Resource Control (RRC) connection according to the detected basic IOT communication category NB1 (200). ).
  • RRC Radio Resource Control
  • the controller 100 may decode channels according to the basic IOT communication category NB1 and obtain information on the MME or HSS 31 or 32.
  • the IOT device 10 may transmit an Attach request for accessing the MME or HSS 31 or 32 according to the acquired information.
  • the MME or HSS (31 or 32) makes a request (Identity request, ESM information request) to the IOT device 10 for identification information and ESM (Evolved Packet System) Session Management (ESM) information of the IOT device 10, and the IOT device
  • ESM Evolved Packet System Session Management
  • the MME or HSS (31 or 32) is an APN (Advanced Unidirectional Private Network) for IOT communication to the S-GW or PGW (33). You can request (APN request).
  • the S-GW or PGW 33 may request an IOT service from the IOT server 40 based on the received APN request, and may be connected to the IOT server 40.
  • the S-GW or PGW 33 connected to the IOT server 40 transmits an APN response message to the MME or HSS 31 or 32 in response to the received APN request, and the MME or HSS 31 or 32 May transmit an attach accept message to the IOT device 10 as a response to the received Attach request. Then, the connection process of the IOT device 10 may be completed (Attach complete), and EMM (Enhancements to Multimedia) information (EMM information) may be transmitted from the MME or HSS 31 or 32 to the IOT device 10. , IOT device 10 may be connected to the IOT server (202).
  • EMM Enhancements to Multimedia
  • FIG. 2B is a conceptual diagram illustrating an example of a user plane and a control plane of an IOT device connected to an IOT server according to a predetermined IOT communication category.
  • the MME or HSS 31 or 32 is the EPS ( Evolved Packet System) bearer 212 may be formed.
  • EPS Evolved Packet System
  • a bearer (NB1 beare) 214 according to a preset IOT communication category NB1 may be formed between the eNodeB 20 and the IOT device 10. Therefore, the IOT device 10 can be connected to the IOT server 40 through the EPS bearer 212 to receive the IOT service, and the data of the provided IOT service is downloaded from the eNodeB 20 through the NB1 bearer 214. You can do it or upload it.
  • the MME or HSS 31 or 32 is the IOT device 10 and the EPS (Evolved Packet System) bearer ( It can be connected by ECM (Evolved Packet System) Connection Management (ECM) according to 212).
  • ECM Evolved Packet System Connection Management
  • an NB1 Radio Resource Control (RRC) connection may be established between the eNodeB 20 and the IOT device 10 according to the NB1 bearer 214 according to a preset IOT communication category NB1.
  • RRC Radio Resource Control
  • FIGS. 2A and 2B illustrate an example in which the IOT device 10 according to an embodiment of the present invention is connected to an IOT server according to a predetermined IOT communication category.
  • the IOT device performs a normal operation, i.e., when the IOT device for measurement performs a function for a purpose specified in advance in the IOT device, such as transmitting the measurement result to the IOT server.
  • a normal operation i.e., when the IOT device for measurement performs a function for a purpose specified in advance in the IOT device, such as transmitting the measurement result to the IOT server.
  • the IOT communication category it can be connected to the IOT server.
  • the IOT device 10 may request a change in the IOT communication category from the base station when a preset condition is satisfied.
  • the preset condition may be a condition that is satisfied according to the operation state of the IOT device 10 or the remaining power of the battery.
  • the control unit 100 of the IOT device 10 is an IOT communication category corresponding to the other function, It is possible to request the eNodeB 20 to change the IOT communication category.
  • the control unit 100 is in each case. With the corresponding IOT communication category, it is possible to request the base station to change the IOT communication category.
  • FIG. 3 is a flowchart illustrating a process in which the IOT communication category is changed according to the request of the IOT device 10 according to an embodiment of the present invention and the base station and the IOT device 10 are connected according to the changed communication category.
  • the IOT communication category set by default in the IOT device 10 is NB1, and the IOT communication category corresponding to the satisfied preset condition is M1. .
  • the IOT device 10 when used for a general purpose and in a normal state, the IOT device 10 is an MME or HSS 31 or 32 and NB1 An ECM connection (NB1 ECM connection 222) may be formed.
  • NB1 (Radio) Bearer 214 may be formed between the IOT device 10 and the eNodeB 20.
  • the controller 100 may determine whether a preset condition is satisfied.
  • the preset condition may be a condition that is satisfied according to a specific state of the IOT device 10 or the remaining battery power of the IOT device 10. That is, when a specific function is requested from the IOT device 10 or when the operation state of the IOT device 10 is a specific operation state, or when the remaining battery power of the IOT device reaches a specific level, the controller 100 It may be determined that a preset condition is satisfied.
  • the controller 100 may detect a specific IOT communication category corresponding to the satisfied condition from among a plurality of IOT communication categories included in the memory 120.
  • information on the detected IOT communication category (Change Category Information) may be transmitted to the base station, that is, the eNodeB 20, the MME, or the HSS 31 or 32 (S300).
  • the information transmitted to the MME or HSS 31 or 32 that is, the category change information, may further include information on the detected IOT communication category information and the IOT communication category supported by the IOT device 10, Information on the reason for the category change request may be included.
  • the base station eg, MME or HSS 31 or 32
  • the category change request message may include information on one of the IOT communication categories included in the category change information.
  • a response to the category change request message transmitted from the IOT device 10 may be received (S304).
  • the IOT device 10 that has transmitted a response message to the category change request received from the base station (MME or HSS 31 or 32) may terminate the connection and bearer formed with the base station (S306). Accordingly, the connection (NB1 ECM connection 222, NB1 Radio Bearer 214) according to the IOT communication category set as the default may be terminated.
  • the controller 100 may reset the IOT communication category to the specific IOT communication category detected according to the satisfied condition (S308).
  • the IOT device 10 may be rebooted to reset the IOT communication category.
  • the specific IOT communication category is the M1 category.
  • the controller 100 may reset the communication category of the IOT device to the M1 category.
  • the controller 100 may perform communication connection with a base station (eg, eNodeB 20) according to the reset IOT communication category. Therefore, the eNodeB 20 and the RRC connection (M1 RRC Connection, S310) may be made according to the reset IOT communication category and the M1 category, and accordingly, the M1 bearer between the eNodeB 20 and the IOT device 10 (M1 Bearer, S312) may be formed.
  • the base station (eg, MME or HSS 31 or 32) and the IOT device 10 may be connected according to the M1 category (M1 ECM Connection) (S314). And as the M1 ECM connection is formed, the communication connection according to the reset IOT communication category may be completed (S316).
  • the IOT device 10 and the M1 ECM-connected base station may retransmit information for the IOT service to the IOT server 40 (Resume Information, S318). Then, the IOT server 40 transmits an IOT service request message for restarting the IOT service to the base station (eg, MME or HSS (31 or 32)) (S320), and accordingly, with the IOT server 40
  • the IOT device 10 may be connected via a base station (eNodeB 20, MME, or HSS 31 or 32) to provide an IOT service (S322).
  • the MME or HSS (31 or 32) and the eNodeB (20) are each formed according to the changed IOT communication category (M1 ECM Connection) and bearer (M1 Radio Bearer) to download data according to the IOT service from the base station or Or you can upload it.
  • M1 ECM Connection changed IOT communication category
  • bearer M1 Radio Bearer
  • IOT communication category is pre-designated to use a low data rate and narrow bandwidth in normal cases, data can be downloaded or uploaded through the IOT communication category allocated with a higher data rate and wide bandwidth as needed. I can.
  • an IOT device that communicates with the NB1 IOT communication category such as a device for measurement or measurement
  • a software upgrade (or update) IOT communication with a higher data transfer rate and a wider bandwidth is allocated. You can receive data by changing the communication category to category. Accordingly, software upgrade (or update) can be performed through FOTA, even for devices that are communicatively connected in the NB1 IOT communication category.
  • the base station (MME or HSS 31 or 32) may determine whether support for the communication category included in the category change information received from the IOT device 10 is possible. . For example, when the base station (MME or HSS (31 or 32)) is unable to support the IOT communication category corresponding to the condition satisfied by the IOT device 10, a category change request message including information on another IOT communication category (S302). ) Can be transferred to the IOT device.
  • the IOT device 10 when the IOT device 10 can change to the IOT communication category according to the category change request message S302 transmitted from the base station (MME or HSS 31 or 32), the IOT device 10 may proceed to step S304 and transmit a response message. .
  • the IOT communication category according to the category change request message (S302) transmitted from the base station (MME or HSS (31 or 32)) is not supported, or if the category is different from the requested intention, a change category response reject message ) May be transmitted to the base station (MME or HSS 31 or 32).
  • the controller 100 may determine that the IOT communication category included in the category change request message is a category different from the requested intention when the IOT communication category does not meet the function or operation state required by the current IOT device.
  • the base station may block the IOT service request from the IOT server or the IOT device for a certain period of time.
  • the base station (MME or HSS (31 or 32)) resumes the IOT service after a certain period of time has elapsed, or provides information notifying that the IOT service is available to the IOT device 10 so that the IOT device 10 You can reconnect with the IOT server.
  • the IOT device 10 may perform the process of steps S300 to S304 again.
  • the base station may transmit timer information according to the certain time to the IOT server 40 when the IOT service request is blocked. . Then, when the time according to the timer information expires, that is, when the predetermined time elapses, the IOT server 40 transmits the service request message to the base station (MME or HSS 31 or 32) to You can have the service resume.
  • FIG. 3 illustrates a case in which the communication category of the IOT device 10 is changed according to the request of the IOT device 10.
  • the communication category of the IOT device 10 may be changed according to the request of the base station.
  • 4 is a flowchart illustrating a process of changing an IOT communication category between a base station and an IOT device in this case.
  • the IOT communication category set by default in the IOT device 10 is NB1, and the IOT communication category corresponding to the satisfied preset condition is M1.
  • the request of the base station for changing the communication category of the IOT device 10 will be described on the assumption that software update according to the FOTA is performed.
  • the IOT device 10 when used for a general purpose and in a normal state, the IOT device 10 is an MME or HSS 31 or 32 and NB1 An ECM connection (NB1 ECM connection 222) may be formed.
  • NB1 (Radio) Bearer 214 may be formed between the IOT device 10 and the eNodeB 20.
  • the base station may receive a request for a specific IOT service for the IOT device 10 from the IOT server 40.
  • the request for the specific IOT service may be a request accompanied by a change in the communication category of the IOT device 10.
  • the base station (MME or HSS 31 or 32) may determine that it is necessary to change the communication category of the IOT device 10.
  • the base station (MME or HSS (31 or 32)) is the IOT device (in case the IOT service requested for the IOT device 10 is a preset service, or according to the size of data to be transmitted to the IOT device 10). It is possible to determine whether or not the communication category of 10) needs to be changed.
  • the base station (MME or HSS (31 or 32)) determines that it is necessary to change the communication category of the IOT device 10. If the base station (MME or HSS (31 or 32)) determines that it is necessary to change the communication category of the IOT device 10, the base station (MME or HSS (31 or 32)) sends IOT to the IOT device 10. It is possible to request a change of the communication category (S400). In this case, the category change request message transmitted to the IOT device 10 may include information on the IOT communication category to be changed.
  • the IOT device 10 may transmit a response message (S402). In this case, if the IOT device 10 is capable of supporting the IOT communication category included in the category change request message, the IOT device 10 may transmit an acceptance message.
  • the connection and the bearer formed with the base station may be terminated (S404). Accordingly, the connection (NB1 ECM connection 222, NB1 Radio Bearer 214) according to the currently set IOT communication category may be terminated.
  • the NB1 RRC connection may also be terminated (NB1 RRC disconnect, S404).
  • the control unit 100 of the IOT device 10 may reset the IOT communication category to the IOT communication category requested from the base station (S406).
  • the IOT device 10 may be rebooted to reset the IOT communication category.
  • the specific IOT communication category is the M1 category.
  • the controller 100 may reset the communication category of the IOT device to the M1 category.
  • the control unit 100 may establish a communication connection and bearer with a base station (eg, eNodeB 20) according to the reset IOT communication category. Accordingly, an M1 Radio Bearer may be formed between the IOT device 10 and the eNodeB 20 according to the reset IOT communication category and the M1 category.
  • the base station eg, MME or HSS (31 or 32)
  • the IOT device 10 may be connected according to the M1 category (M1 ECM Connection) (S412).
  • M1 ECM Connection M1 ECM Connection
  • the communication connection according to the reset IOT communication category may be completed (S414).
  • the IOT device 10 and the M1 ECM-connected base station may retransmit information for the IOT service to the IOT server 40 (Resume Information, S416).
  • the IOT server 40 may provide software update data according to the FOTA to the base station (eg, MME or HSS 31 or 32) in order to provide the requested IOT service (S418).
  • the IOT service provided from the IOT server 40 that is, the software update of the IOT device 10 according to the FOTA may be performed via the base station (eg, MME or HSS 31 or 32) (S420).
  • the category change request message transmitted from the base station (eg, MME or HSS 31 or 32) to the IOT device 10 in step S400 may include information on a plurality of IOT communication categories. .
  • the IOT device 10 may determine whether support for at least one communication category included in the received category change request message is possible.
  • the IOT device may transmit a response message including information on the supported IOT communication category.
  • the base station e.g., MME or HSS (31 or 32)
  • the IOT device 10 may transmit the IOT included in the response message. Connection can be performed according to communication categories.
  • the IOT device 10 may transmit a change category response reject message to the base station (MME or HSS (31 or 32)) notifying that the category change is impossible in step S402. have.
  • the base station (MME or HSS 31 or 32) may block the IOT service request from the IOT server or the IOT device for a certain period of time.
  • the base station (MME or HSS 31 or 32) may provide timer information to the IOT server 40 so that the IOT service is resumed after a certain period of time has elapsed.
  • the IOT server 40 transmits the service request message to the base station (MME or HSS 31 or 32) again.
  • the above-described process of FIG. 4 may be performed again.
  • the IOT device and the base station are changed according to the IOT device 10 requesting the base station to change the IOT communication category or the base station requesting the IOT device 10 to change the IOT communication category.
  • the change of the IOT communication category may be performed by the IOT device 10 itself without consultation with the base station.
  • 5 is a flowchart illustrating a process in which the IOT device 10 according to an embodiment of the present invention changes an IOT communication category by itself and connects to a base station according to the changed communication category in this case.
  • control unit 100 of the IOT device 10 may first determine whether a preset IOT communication category change condition is satisfied (S500).
  • the change condition may be related to the operation state of the IOT device 10 or the remaining battery power of the IOT device 10. That is, when the IOT device 10 performs a specific function or is in a specific operation state, the controller 100 may determine that the IOT communication category change condition is satisfied. Alternatively, when the remaining battery power of the IOT device 10 reaches a preset level, it may be determined that the IOT communication category change condition is satisfied.
  • the controller 100 may detect an IOT communication category corresponding to the satisfied change condition (S502).
  • the memory 120 of the IOT device 10 may store information on a plurality of IOT communication categories that can be supported by the IOT device 10.
  • information on a plurality of IOT communication category change conditions may be stored.
  • the information on the plurality of IOT communication category change conditions may include information on a specific IOT communication category corresponding to each IOT communication category change condition. Accordingly, when any one IOT communication category change condition is satisfied, the controller 100 may detect any one IOT communication category corresponding to the satisfied change condition.
  • the control unit 100 may terminate the IOT communication connection currently connected to the base station (S504).
  • the IOT communication connection connected to the current base station may mean connection between the base station and the IOT device in both the user plane and the control plane. That is, the control unit 100 cancels the bearer formed between the IOT device 10 and the eNodeB 20 and the EPS bearer formed between the IOT device 10 and the MME 31 or HSS 32 in the step S504. I can.
  • the control unit 100 terminates the RRC connection formed between the IOT device 10 and the eNodeB 20 and the ECM connection formed between the IOT device 10 and the MME 31 or HSS 32 in step S504. I can.
  • the controller 100 may reset the IOT communication category according to the IOT communication category detected in step S502 (S506). In order to reset the IOT communication category, the controller 100 may reboot the IOT device 10.
  • the control unit 100 may connect the base station and wireless communication according to the reset IOT communication category (S508). Accordingly, a bearer according to the reset IOT communication category may be formed between the IOT device 10 and the eNodeB 20, and the reset IOT between the IOT device 10 and the MME 31 or HSS 32 EPS bearers may be formed according to communication categories.
  • the IOT device 10 and the eNodeB 20 may establish an RRC connection according to the reset IOT communication category, and the reset IOT communication between the IOT device 10 and the MME 31 or HSS 32 ECM connections can be established according to categories.
  • the IOT device 10 has been described as an example in which the IOT communication category is changed depending on whether a preset condition is satisfied, but the IOT device 10 Of course, it is possible to more efficiently manage the power consumed in ).
  • the M1 category may be set (hereinafter, it will be assumed as the M1 category).
  • the personal mobile device it is only necessary to upload its own location to the IOT server when it is not moving. If it does not move, the amount of data uploaded to the base station may be very small since there is no change in location information.
  • an IOT communication category for example, NB1 with an extremely small amount of data is sufficient, but as described above, since an IOT communication category in which data of a size can be transmitted is set, the maintenance cost may increase.
  • the base station and wireless communication are connected according to an IOT communication category capable of transmitting data at a higher speed, the consumption of the battery may increase.
  • the controller 100 may change the IOT communication category according to the operation state of the IOT device 10.
  • the basic IOT communication category may be set to the M1 category according to the mobile IOT device.
  • the control unit 100 may be connected to the base station according to the M1 category.
  • the controller 100 may determine that the IOT device 10 is in a state in which it does not move. In addition, according to an operation state in which the IOT device 10 does not move, the control unit 100 may determine that a change condition of a preset IOT communication category is satisfied. That is, when the "operation state of the IOT device" is "the state in which the movement is stopped", the controller 100 may determine that a condition corresponding to a specific IOT communication category is satisfied.
  • the specific IOT communication category corresponding to the satisfied condition may be an IOT communication category having a narrower bandwidth and a lower data rate than an IOT communication category set as a default in the IOT device, that is, a lower data rate.
  • the specific IOT communication category may be an NB1 category.
  • the control unit 100 may perform communication connection with the base station according to the basic set IOT communication category, that is, the M1 category.
  • the category may be reset to NB1 to perform communication connection with the base station. Accordingly, power consumed when the IOT device 10 is stopped can be lowered, and thus power consumption of the IOT device 10 can be further reduced.
  • the IOT device 10 may be rebooted, so the control unit 100 may first determine whether the movement of the IOT device 10 is stopped, and then reset the IOT communication category. . To this end, the controller 100 may determine that the movement of the IOT device 10 is surely stopped when the time for maintaining the stopped state of the IOT device 10 is longer than a preset time.
  • the control unit 100 of the IOT device 10 categorizes the IOT communication category having a wider bandwidth and a higher data rate than the IOT communication category set by default in the IOT device, that is, a higher data rate. You can perform a reset. For example, if the default IOT communication category is the M1 category, the control unit 100 may reset the category to 1 category to update the software, and in this case, the software is more smooth according to a higher data transmission rate. Can be updated.
  • the controller 100 may determine this as another category change condition. In this case, the controller 100 may reset the category to the IOT communication category set as a default again, and communication between the IOT device 10 and the base station may be connected according to the IOT communication category set as the default according to the reset.
  • 1, M1, and NB1 categories are set in the IOT device according to the examples of the categories described in [Table 1], but this is only assumed as an example for convenience of description. Of course, this is not limited to this. That is, as well as the above-described 1, M1, and NB1 categories, there may be any number of IOT communication categories, and of course, they may be set in the IOT device 10 according to an embodiment of the present invention.
  • the control unit 100 of the IOT device 10 requests the base station to change the communication category to a specific IOT communication category detected according to whether a preset category change condition is satisfied ( 3)
  • the configuration of resetting the communication category by itself (FIG. 5) has been described, but when a communication category is detected, the control unit 100 further includes a process of comparing the detected communication category with the communication category currently connected to the base station. Of course you can. In this case, if the communication category currently connected to the base station and the detected communication category are the same, reconfiguration of the communication category may not be performed.
  • steps S400 to S406 a configuration in which the IOT device 10 resets the communication category according to the communication category change request received from the base station is described, but the communication category change request received from the base station in step S400
  • the communication category change request received from the base station in step S400 may not be performed.
  • step S400 of FIG. 4 may further include a process of comparing at least one communication category included in the received communication category change request message with a communication category in which the IOT device 10 is currently connected to the base station.
  • the present invention described above can be implemented as a computer-readable code on a medium on which a program is recorded.
  • the computer-readable medium includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include hard disk drives (HDDs), solid state disks (SSDs), silicon disk drives (SDDs), ROMs, RAM, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, etc.
  • HDDs hard disk drives
  • SSDs solid state disks
  • SDDs silicon disk drives
  • ROMs read-only memory
  • RAM compact disc drives
  • CD-ROMs compact discs
  • magnetic tapes magnetic tapes
  • floppy disks optical data storage devices
  • optical data storage devices etc.
  • carrier wave for example, transmission over the Internet
  • the computer may be the aforementioned IOT device, and thus may include the control unit 100. Accordingly, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un dispositif IdO selon un mode de réalisation de la présente invention comprend : une unité de communication servant à effectuer une communication sans fil avec une station de base ; et une unité de commande servant à déterminer si une condition de changement de catégorie de communication IdO prédéfinie est satisfaite ou non ; la transmission, à la station de base, d'informations concernant une catégorie de communication IdO spécifique correspondant à la condition de changement satisfaite lorsque la condition de changement est satisfaite ; et la commande de l'unité de communication de telle sorte que la communication sans fil est connectée à la station de base selon la catégorie de communication IdO spécifique si une demande de changement de catégorie à la catégorie de communication IdO spécifique est reçue en provenance de la station de base en réponse aux informations concernant la catégorie de communication IdO spécifique.
PCT/KR2019/014020 2019-10-24 2019-10-24 Dispositif ido et système de communication comprenant un dispositif ido Ceased WO2021080035A1 (fr)

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