WO2014058113A1 - Procédé et dispositif pour l'attribution des ressources d'un réseau m2m - Google Patents

Procédé et dispositif pour l'attribution des ressources d'un réseau m2m Download PDF

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Publication number
WO2014058113A1
WO2014058113A1 PCT/KR2013/001239 KR2013001239W WO2014058113A1 WO 2014058113 A1 WO2014058113 A1 WO 2014058113A1 KR 2013001239 W KR2013001239 W KR 2013001239W WO 2014058113 A1 WO2014058113 A1 WO 2014058113A1
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Prior art keywords
network
priority
gateway
service
network resources
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PCT/KR2013/001239
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English (en)
Korean (ko)
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양정엽
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주식회사 케이티
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5003—Managing SLA; Interaction between SLA and QoS
    • H04L41/5019—Ensuring fulfilment of SLA
    • H04L41/5022—Ensuring fulfilment of SLA by giving priorities, e.g. assigning classes of service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H04L47/52—Queue scheduling by attributing bandwidth to queues
    • H04L47/522—Dynamic queue service slot or variable bandwidth allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/808—User-type aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • 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]

Definitions

  • the present invention relates to a method and apparatus for allocating network resources for M2M devices in an M2M network, and in particular, defines available network resources that can be allocated to each device in a gateway of an M2M network including one gateway and a plurality of M2M devices, A method and apparatus for allocating network resources according to device-specific priorities.
  • Machine-to-Machine (M2M) network refers to a network for communication between devices that does not require human interaction. However, this means that no human interaction with the device is necessary for the M2M service, but does not mean that no human interaction is required for the operation of the device.
  • M2M Machine-to-Machine
  • M2M meant one-to-one or one-to-many communication for simple point-to-point connection.
  • M2M communication means collecting information read from sensors or wireless communication modules. It defines the communication between machines at the level of control or control and between the device and machine on which the human is operating.
  • the goal of M2M communication is to improve location-based, context-aware, and augmented reality, and to improve M2M communication services by automatically operating without human control or minimizing human intervention. Aims at quality and stability.
  • M2M network communication can be utilized as an essential infrastructure that can contribute to solving social issues, preventing disasters and disasters, and saving energy through conventional u-City, u-Health, u-Transportation, and u-Environmental projects.
  • M2M services include remote meter reading, building and facility management, vending machine management, indoor lighting control service, traffic information and vehicle control, emergency dispatch, telematics, and wireless payment service.
  • network managers often selectively add or reallocate bandwidth to mitigate congestion.
  • Network operators may also use QoS and policy based management techniques.
  • QoS refers to resource retention and control mechanisms that guarantee a certain level of performance for data flow in accordance with requests from application programs or Internet service provider policies.
  • QoS disallows certain types of packets, e.g. to reduce transmission speed, to establish distinct classes of packets and / or services for users, to indicate priorities of packets and / or to establish a queue system. Can be used to
  • QoS systems may preferentially handle certain network traffic.
  • IP Internet protocol
  • a router for supporting and a method of classifying a high-speed Internet protocol (IP) packet performed in the router are disclosed.
  • the router hierarchically divides memory with flow tables into fast internal cache memory and external typical memory.
  • the internal cache memory stores recently retrieved table items.
  • the router first searches for flow tables in the internal cache memory. Only when the internal cache memory search fails, the flow tables of the external memory are searched. As a result, the frequency of interaction between the packet classifier and the external memory is reduced, thereby improving the speed of packet classification.
  • the patent merely illustrates a broader class of prior art that deals with mechanisms for providing or enforcing QoS policies.
  • U.S. Pat.No. 6,771,661 also entitled “Apparatus and methods for providing event-based data communications device configuration," filed August 3, 2004, discloses the activity of data communication in the occurrence of specific events or times.
  • a system and method are provided that allow a data communication device to be programmed to automatically and dynamically modify the allocation of resources without having to interrupt sessions.
  • Resource allocation may be by means of bandwidth retention provided to the data communication device via network policy or via separate bandwidth retention messages.
  • the bandwidth allocation information may specify the session of the data communication and future bandwidth modification information, such as time or event, which causes the data communication device to modify the amount of bandwidth held for the specified session of the data communication, Receive bandwidth allocation information indicating future bandwidth allocation modification information associated with a session of data communication.
  • the data communication device can then determine a future event, i.e., a future event in which the data communication device will modify the amount of bandwidth allocated to the session of data communication upon the occurrence of that event. Future events may be determined based on future bandwidth allocation modification information and event information (eg, time signals from clocks or other event signals).
  • the data communication device may detect the occurrence of a future event in the data communication device and may modify the amount of bandwidth allocated to the session of data communication in the data communication device in response to the detection of the occurrence.
  • the network including Wi-Fi “hotspots” in wireless LANs), in particular, by allocating available resources such as bandwidth according to user-determined specifications or inputs.
  • the network including Wi-Fi “hotspots” in wireless LANs, in particular, by allocating available resources such as bandwidth according to user-determined specifications or inputs.
  • There is a remarkable need for a mechanism for effectively managing and controlling the operation of the < RTI ID 0.0 >
  • the network resource management method according to the prior art as described above can be mainly applied to the WAN, LAN, and WCDMA, LTE, etc., which are conventional local and remote networks.
  • M2M gateway requests various kinds of quality of service from network according to application type of connected device by accommodating various kinds of devices, and there is a possibility of causing network load according to data amount or data transmission speed of the quality of service. This is because there is a problem. Therefore, there is no comprehensive QoS management method considering various situations occurring in the current M2M network.
  • Embodiments of the present invention have been made to solve the problems of the prior art as described above, and an object thereof is to provide a method for providing a QoS management scheme in consideration of the characteristics of the M2M network. This effectively manages the traffic of the M2M network to provide stable M2M service, ensuring the normal operation of the device, allowing users to receive the service in a timely manner.
  • a method of allocating resources of a machine-to-machine network for achieving the above object includes: determining available network resources to be allocated to a device from a gateway; Calculating priorities for device-by-device quality of service (QoS) management; And allocating the available network resources according to the calculated priority.
  • QoS quality of service
  • the priority is: QoS required per device; Availability based on call history and number of applications available per device; Connection failure or success possibility based on device-specific connection success or failure history; Per device reachable state and reachability; And a parameter related to at least one of the possibility of error occurrence based on the device-specific data transmission and processing error history.
  • the M2M network resource allocation apparatus for achieving the above object, a priority calculating unit for calculating or recalculating the priority for quality of service (QoS) management for each device; And a resource allocating unit for allocating available network resources according to the calculated or recalculated priority.
  • QoS quality of service
  • QoS for each device of the M2M is guaranteed, so that most devices on the M2M network are not required for user needs regardless of network load. It solves the problem of delay caused by low priority devices, guarantees fairness of service of each device and improves the performance of overall M2M network.
  • a security alert service can be provided immediately by allocating network resources in an emergency situation to a device that is urgently connected to an M2M network and provides a service, such as a security device such as intrusion detection.
  • a security device such as intrusion detection.
  • devices that are rarely used, such as fire alarms, that do not know exactly whether they have a failure can be detected immediately by checking the usage history and the possibility of data transmission and finding out before the accident.
  • a defibrillator or a cardiac pacemaker which is a life-saving device that is directly connected to human life, needs to be operated, network resources can be immediately allocated for medical data transmission to receive information and enable first aid.
  • the present invention implements or utilizes the functions of the gateway and the device proposed in the standard document (ETSI TS 102 690 M2M Functional Architecture), anyone who is a product regardless of a specific company or country as long as the standard is followed. It has the advantage that it can be applied and standardized.
  • FIG. 1 illustrates an architect for an M2M service that includes a device and gateway domain and a network domain.
  • FIG. 2 is a diagram illustrating a configuration of a device and a gateway domain composed of one gateway and a plurality of devices according to an exemplary embodiment of the present invention.
  • 3A to 3C are flowcharts illustrating a method of allocating M2M network resources according to preferred embodiments of the present invention.
  • FIG. 4 is a diagram schematically illustrating a configuration of an M2M network resource allocation apparatus according to a preferred embodiment of the present invention.
  • Machine-to-Machine (M2M) communication is an object-to-machine communication that differs from the existing human-centered human-to-human communication. From these differences, technically necessary technologies may vary, and the required characteristics may vary slightly depending on the field of application using M2M communication. M2M communication is a paradigm of the new communication network in the coming future, which goes beyond the existing people-oriented communication, and presents various complex convergence services not only in the ubiquitous business but also in various industries.
  • FIG. 1 shows the ETSI Technical Specification (TSSI) 102 690 [Machine-] in the ESTI standard document. to-Machine Communications (M2M);
  • Fig. 4 shows the architecture for M2M services including device and gateway domains and network domains.
  • the M2M devices 10 and 10 ′ are terminal devices that communicate with minimal or no human input and intervention, and transmit or transmit their own data on request or automatically. It is a kind of device.
  • the M2M application M12M of the M2M device 12 uses the M2M service capability 11 of the M2M device 10'.
  • the M2M gateway (M2M gateway 30) may be used using the M2M service capability 31 of the M2M gateway 30. It is prescribed to use the M2M application 32 of 30).
  • the M2M Area Network 20 provides a connection between the M2M device 10 and the M2M gateway 30.
  • M2M local area network 20 examples include a personal area network (hereinafter referred to as a 'PAN') or a wireless local area network such as IEEE 802.15.x, Zigbee, Bluetooth, IETF ROLL, ISA100.11a, and the like.
  • Area Network hereinafter referred to as 'LAN'
  • PLC, M-BUS, Wireless M-BSU, KNX may include a LAN.
  • the M2M gateway 30 is a gateway that executes the M2M application 32 using the M2M service capability 31 and serves as a proxy between the M2M device 10 and the access network 40.
  • the access network 40 is a network that allows the M2M device 10 'to M2M gateway 30 to communicate with the core network 50.
  • Examples of the access network 40 include xDSL, HFC, FTTH, PLC, Satellite network, GERAN, UTRAN, eUTRAN, Wireless LAN, WiMAX (WiBro), and the like.
  • the core network 50 is a network that provides IP connectivity, access network control and network service control functions, interconnection with other networks, roaming functions, and the like.
  • Examples of the core network 50 are 3GPP CN, ETSI TISPAN CN, 3GPP2 CN, IMS, and the like.
  • the M2M service capability 60 of the network domain provides a function that can be shared by different applications, and provides an environment for accessing other service capabilities through an open interface. By using M2M service capabilities, it is possible to develop and deploy optimal applications without considering the characteristics of lower network layers.
  • M2M applications 70 in the network domain use M2M service capabilities through an open interface to execute and provide M2M service logic in the M2M system.
  • the network domain is defined to include M2M Management Functions and Network Management Functions.
  • M2M Management Functions (80) is composed of all the functions required to manage M2M service capabilities in the network domain, the management of the M2M device to M2M gateway uses a specific M2M service capability.
  • the network management functions 90 are composed of all functions required to manage the access network 40 and the core network 50, and provide provisioning, supervision, and fault management. And other features.
  • FIG. 2 is a diagram illustrating a configuration of a device and a gateway domain composed of one gateway and a plurality of devices according to an exemplary embodiment of the present invention.
  • a device and a gateway domain to which a preferred embodiment of the present invention is applied include a gateway 30 connected to a network domain 100 and N (where N is an integer of 1 or more) M2M devices 10-1 and 10-. 2, 10-3, ...., 10-N).
  • the M2M devices 10-1, 10-2, 10-3,..., 10 -N register, authenticate and authorize the device through the service capability in the gateway 30.
  • Management, provisioning, and the like, and the gateway 30 executes an M2M application using a service capability, for example, a function of collecting and processing various information data from a sensor included in a device. You can run an application that does this.
  • available network resources that can be allocated to each device from a gateway of an M2M network may be defined as follows.
  • the amount of available network resources that can be allocated to all N M2M devices 10-1, 10-2, 10-3, ..., 10-N from the gateway 30 at a specific time t is GW (t). If the required traffic for each device is called D_T (t), the average network resource that can be allocated per device is GW (t) / N, and the minimum traffic required for one device is min (D_T (t)). .
  • the minimum traffic required by one device must be smaller than the average network resource allocable per device, and the sum of the minimum traffic required by all devices must be smaller than the network resource allocable to all N devices.
  • the difference [Reserved_GW (t)] between the network resources allocable to the N M2M devices and the minimum traffic required by all devices may be defined as follows.
  • Reserved_GW (t) will be variable according to the traffic allocation situation per device per hour.
  • the gateway can control the allocation of available network resources by calculating the priority of each device at the gateway.
  • 3A is a flowchart illustrating a network resource allocation method for managing QoS of an M2M device according to an embodiment of the present invention.
  • First step S31 determines available network resources to be allocated for each device at the gateway. As described above with reference to FIG. 2 and the related art, this determination may be performed in consideration of available network resources allocable by the gateway and minimum traffic required for each device in a domain composed of one gateway and N M2M devices.
  • the gateway on the M2M network calculates the priority for QoS management for each device in the network.
  • a function SORT (D (n)) which calculates the priority of N devices, is implemented in the gateway, the SORT function may calculate the result value by considering the following factors comprehensively:
  • the SORT function may determine a policy problem such as assigning a weight to each element by the gateway manager or a program.
  • the factor for calculating the constituent factor of the SORT function for the above-mentioned priority is the service capability of the gateway and the device (hereinafter referred to as 'SC'), for example, the above-described ETSI Technical Specification (TS) 102 690 [Machine].
  • 'SC' the service capability of the gateway and the device
  • TS Technical Specification
  • M2M Functional architectures as defined in [functional architecture].
  • M2M Service Capabilities provide capabilities that are exposed to reference points (i.e. interfaces), for example a combination of externally accessible interfaces such as 3GPP, 3GPP2, ETSI TISPAN, etc. Through this, you can use the capabilities of the core network and access it through one or several core networks and interfaces.
  • the standard also includes a layer representing M2M service capabilities in a network domain, a network service capability layer (hereinafter referred to as NSCL), and a layer representing M2M service capabilities of a gateway.
  • Layer hereinafter referred to as GSCL
  • GSCL Network Service Capability Layer
  • DSCL Device Service Capability Layer
  • NSCL Device Service Capability Layer
  • GSCL Device Service Capability Layer
  • 'SCL' service capability layer
  • the M2M application refers to a device application (hereinafter referred to as "DA"), a gateway application (hereinafter referred to as “GA”), and a network application (hereinafter referred to as "NA”).
  • DA device application
  • GA gateway application
  • NA network application
  • the DA may be located in a device in which the M2M service function is implemented or in a device in which the service capability is not implemented.
  • the SC of the GSCL for calculating the constituents of the SORT function for the above-described priorities may include the following SC:
  • Gateway Application Enablement (hereinafter referred to as 'GAE') capability providing functions such as allowing GA and DA to register with the Gateway's GSCL; Gateway Generic Communication (GGC) capability that provides a function such as reporting an error that may occur in a message transmission process; Provides functions such as managing the reachability status of the device and scheduling information regarding reachability, creating, deleting and viewing device groups, storing data of NA / DA / GA and GSCL or NSCL, and setting access rights.
  • GGC Gateway Generic Communication
  • GRR Gateway Reachability, Addressing and Repository
  • GREM Gateway Remote Entity Management
  • 'GHDR' Gateway History and Data Retention
  • GTM Gateway Transaction Management
  • SC of the DSCL for calculating the constituents of the SORT function for the above-described priority may include the following SC:
  • DAE Device Application Enablement
  • DGC Device Generic Communication
  • 'DRAR' Device Remote Entity Management
  • 'DREM' Device Remote Entity Management
  • 'DHDR' Device History and Data Retention
  • DTM Device Transaction Management
  • M2M Service Capabilities considered as constituents of the SORT function according to the preferred embodiment of the present invention utilize service capabilities that must be implemented as long as they conform to the above-described standards.
  • a detailed calculation method for each element of the priority calculation formula according to an embodiment of the present invention is as follows.
  • the required QoS for each device may be determined according to a predefined type of device.
  • the level of network traffic required to provide an M2M service for a corresponding device may be divided into classes such as high / medium / low compared to all devices.
  • the service provided through the M2M network may be a service directly related to human life such as an e-health service or a fire alarm service, in this case, the importance of a specific device may be considered separately.
  • the number of DAs available (number_of_registered_DA) compared to the number of DAs (number_of_registered_DA) stored in the device as shown in the following equation ( The probability of using the corresponding DA can be calculated by the ratio of number_of_performed_DA).
  • connection failure or the likelihood of success based on the connection success or failure history for each device is, for example, the number of successful device registrations (number_of_registered_Device) as the history of the device having succeeded in configuring the gateway and the network or the number of failures, as shown in the following equation. And the number of successful connection (number_of_registered_Device).
  • the current reachable state of the device is calculated by comparing the state of the Gateway Service Capability Layer (GSCL) and the state (status_of_Device) of the DSCL (Device Service Capability Layer). can do.
  • GSCL Gateway Service Capability Layer
  • status_of_Device state of the DSCL
  • the error occurrence probability based on the data transmission and processing error history for each device may be calculated based on the transaction processing history (number_of_successful_transaction) and the message transmission failure history (number_of_transmission_errors) of the device as shown in the following equation.
  • step S33 if device priorities are determined according to the SORT function calculated in step S32, QoS is allocated by assigning network resources by device through device bandwidth adjustment and access blocking / allowing according to device. Manage it.
  • the SORT (D (n)) function described above with reference to FIG. 3A may be calculated and applied in the case of an initial M2M network configuration, but when the total number of devices connected to the gateway changes or the Connection_Timer for checking the connection status of all devices expires. Whenever it may, it may also be used to reclaim the QoS priority of the device.
  • 3B illustrates a flowchart of a method of reallocating available network resources by reassigning a priority function in order to efficiently allocate network resources when the total number of M2M devices connected to the gateway increases or decreases.
  • Steps S31 to S33 are the same as described above with reference to FIG. 3A, and thus detailed descriptions thereof will be omitted.
  • step S34 it is determined that the number of M2M devices connected to the M2M gateway is changed or evidenced, and when it is determined that the number of M2M devices is changed, in step S35, the priority function for allocating network resources is recalculated. Reallocate available network resources using the calculated priority function.
  • connection timer Connection_Timer determines whether the connection timer Connection_Timer for checking the connection status of the M2M device has expired (step S36), regenerates a priority function each time the connection timer expires (step S37), and recalculates the priority. Reallocate available network resources according to rank function. Due to the nature of the M2M device, the information transmitted from the M2M device tends to be sent only for a short period of time, because there are few messages. Therefore, it is necessary to periodically check whether the gateway is disconnected from the device. The role of the connection timer Connection_Timer in this embodiment is to periodically check the case where the connection between the gateway and the device is abnormal and to check the idle state of each device. The time period of the connection timer Connection_timer may be arbitrarily determined according to the characteristics of the M2M service provided by the M2M service provider.
  • the device may be included as part of the M2M gateway, but may be included as a separate entity from the gateway or included in the network domain to perform the network resource allocation method as described above.
  • the M2M network resource allocation apparatus includes a priority calculator 41 and a resource allocator 42.
  • the priority calculating unit 41 calculates a priority for QoS management for each device when initially configuring an M2M network including one or more M2M devices and M2M gateways.
  • the priority calculating unit 41 is a device when the total number of devices connected to the M2M gateway changes or every time a certain time elapses (for example, whenever a predetermined Connection_Timer expires to check the connection status of the devices). Reprioritize priorities for each QoS management.
  • the priority calculation or recalculation process of the priority calculation unit 41 may be executed by, for example, using the SORT function as described above implemented in the M2M gateway.
  • the resource allocation unit 42 according to the present embodiment, bandwidth control for each device and time zone for the gateway according to the priority for QoS management for each device calculated or recalculated by the priority calculation unit 41. Allocates or reallocates network resources by device through blocking / allowing access.

Abstract

L'invention concerne un procédé et un dispositif pour l'attribution des ressources d'un réseau de communication entre machines (M2M), qui impliquent : la détermination de ressources de réseau disponibles devant être attribuées par une passerelle à un dispositif ; le calcul d'une priorité relative à la gestion de la qualité de service (QoS) pour chaque dispositif ; et l'attribution des ressources de réseau disponibles selon la priorité calculée, ladite priorité pouvant être calculée sur la base d'un paramètre lié à une ou plusieurs des caractéristiques suivantes : la QoS exigée pour chaque dispositif ; une disponibilité basée sur le nombre d'applications disponibles pour chaque dispositif et l'historique des appels de ces applications ; la possibilité de réussite ou d'échec de la connexion basée sur l'historique des réussites ou des échecs de connexion de chaque dispositif ; l'état d'accès et l'accessibilité de chaque dispositif ; et un taux d'erreurs basé sur l'historique des erreurs de transmission et de traitement de données pour chaque dispositif.
PCT/KR2013/001239 2012-10-12 2013-02-18 Procédé et dispositif pour l'attribution des ressources d'un réseau m2m WO2014058113A1 (fr)

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US9554392B2 (en) 2014-10-15 2017-01-24 At&T Intellectual Property I, L.P. Machine to machine traffic management methods and systems
US11070446B2 (en) 2017-10-24 2021-07-20 At&T Intellectual Property I, L.P. Intelligent network resource orchestration system and method for internet enabled device applications and services
CN117278490A (zh) * 2023-10-18 2023-12-22 石家庄常宏建筑装饰工程有限公司 一种物联网网关数据快速传输方法及系统

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KR102325822B1 (ko) 2015-03-10 2021-11-11 삼성전자주식회사 사물 인터넷 디바이스 및 사물 인터넷 통신 방법
CN110062360B (zh) * 2019-04-04 2022-03-15 南京邮电大学 一种基于mMTC业务分级的资源分配方法

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