WO2019083223A1 - Dispositif terminal, dispositif d'émission/réception de données, et procédé d'exploitation de dispositif - Google Patents

Dispositif terminal, dispositif d'émission/réception de données, et procédé d'exploitation de dispositif

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Publication number
WO2019083223A1
WO2019083223A1 PCT/KR2018/012330 KR2018012330W WO2019083223A1 WO 2019083223 A1 WO2019083223 A1 WO 2019083223A1 KR 2018012330 W KR2018012330 W KR 2018012330W WO 2019083223 A1 WO2019083223 A1 WO 2019083223A1
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WO
WIPO (PCT)
Prior art keywords
information
uplink packet
path
specific information
service
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/KR2018/012330
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English (en)
Korean (ko)
Inventor
이동진
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SK Telecom Co Ltd
Original Assignee
SK Telecom Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SK Telecom Co Ltd filed Critical SK Telecom Co Ltd
Priority to US16/758,143 priority Critical patent/US11778504B2/en
Priority claimed from KR1020180124714A external-priority patent/KR102258026B1/ko
Publication of WO2019083223A1 publication Critical patent/WO2019083223A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04L41/12—Discovery or management of network topologies

Definitions

  • the present invention relates to a technique by which a terminal can control its own data delivery path.
  • This rapidly evolving 5G communication system is designed to accommodate as many terminals as possible on the basis of limited radio resources and to provide enhanced mobile broadband (EMBB), massive machine type communications (MMTC) And various service types such as URLLC (ultra-reliable and low latency communications, highly reliable and low latency communication).
  • EMBB enhanced mobile broadband
  • MMTC massive machine type communications
  • URLLC ultra-reliable and low latency communications, highly reliable and low latency communication
  • the 5G defines a network structure for end-to-end support of terminal, base station (access), core and server.
  • a network structure is defined in which a control signaling function area and a data transmission / reception function area (User Plane) are classified.
  • control node of the control plane in the 5G includes an Access and Mobility Function (AMF) for controlling access to the wireless section of the terminal, a Policy Control Function (PCF) for managing / controlling policies such as subscriber information and subscriber- ), A session management function (SMF) for managing and controlling sessions for using data services for each terminal, and the like.
  • AMF Access and Mobility Function
  • PCF Policy Control Function
  • SMF session management function
  • the data node of User Plane in 5G is defined as a UPF (User Plane Function) that transmits and receives data between a terminal and a data network (for example, the Internet) through a session with the terminal based on the SMF control .
  • UPF User Plane Function
  • the 5G defines a ULCL (Uplink Classifier) that steers the terminal's traffic to a local network close to the UE in the UPF of the User Plane.
  • ULCL Uplink Classifier
  • the ULCL function is briefly described as follows.
  • the SMF is based on the information that the UPF transmits information such as the terminal identifier / destination IP address / Prefix of the traffic to be steered to the local network by each UPF of the User Plane.
  • the UPF is a method of steering the corresponding uplink packet (traffic) among the received uplink packets to the local network based on information received from the SMF.
  • UPF is totally dependent on information received from SMF.
  • the present invention proposes a new scheme for the terminal to control the propagation path steering for its own traffic, thereby effectively solving the above-mentioned problem of the current 5G ULCL function.
  • An object of the present invention is to realize a method by which a terminal can control its own data delivery path.
  • the data transmitting and receiving apparatus includes: a confirmation unit for confirming whether specific information defining a transmission path exists in the received uplink packet; A path setting unit configured to generate a transmission path based on the specific information and to set the transmission path as a service flow path of the uplink packet when the specific information exists; And a transmitting unit for transmitting an uplink packet, which is divided into the service flow among the received uplink packets, to the transmission path.
  • the mobile communication terminal further includes a local interworking unit for interworking with at least one local network, and supporting at least one transmission path generation with a device in each local network as a destination;
  • the route setting unit may generate a delivery route in accordance with the specific information within a range supported by the local interlocking unit.
  • the at least one local network may include at least one of an internal network in which the other data transmitting / receiving apparatus is located and a local data network in which the local server is located.
  • the path setting unit stores the service flow classification information of the uplink packet and the mapping information that maps the generated transmission path in a route table, and transmits a delivery path generated according to the specific information to the uplink packet Service flow path.
  • the transmitting unit may transmit an uplink packet in the case where specific information among the received uplink packets exists but the path setting unit fails to generate a transmission path according to specific information, to the default data network.
  • the transmitting unit may transmit an uplink packet when the service flow classification information of the received uplink packet is not present in the path table, to the default data network.
  • the path setting unit may delete the transmission path set as the service flow path of the uplink packet.
  • a terminal apparatus includes: a classification unit for classifying a service flow of an uplink packet to be transmitted; An information inserter for inserting specific information defining a delivery path of a service flow into an uplink packet of a service flow according to the satisfied triggering condition among the separated service flows when the predefined triggering condition is satisfied; And a transmitter for transmitting the uplink packet to the data node.
  • the information inserting unit may insert the specific information into the first uplink packet of the service flow.
  • the information inserting unit can select and insert the specific information based on the information table and the policy information.
  • the triggering condition is used when a specific service flow requiring a specific information-based delivery path is generated, or when a slice ID of a specific service type requiring a specific information-based delivery path setting is used, Based route is set to be lower than a specific value required for setting a specific information-based delivery path, or when the traffic usage amount is located in a specific area requiring a specific information-based delivery path setting, , Or when receiving a control event from the core network, it can be satisfied.
  • the specific information may include a service code that defines at least one of a service type supported in a delivery path, address information of a device corresponding to a destination of a delivery path, service capacity information of the delivery path, and delay information have.
  • the information inserting unit may insert request information for requesting deletion of a transmission path into the last uplink packet of the service flow transmitted by inserting the specific information.
  • an operation method of a data transmission / reception apparatus includes: a confirmation step of confirming whether specific information defining a transmission path exists in a received uplink packet; A routing step of, when the specific information exists, generating a delivery path according to the specific information and setting the delivery path as a service flow path of the uplink packet; And a transmission step of transmitting, in the transmission path, an uplink packet which is divided into the service flow among the received uplink packets.
  • the path setting step may include storing the service flow classification information of the uplink packet and the mapping information mapping the generated transmission path into a path table, and transmitting a transmission path generated according to the specific information to the uplink packet Of the service flow path.
  • an uplink packet in the case where specific information among the received uplink packets exists but fails to generate a delivery path according to the specific information, or service flow classification information in the received uplink packet, It is possible to transmit the uplink packet when it does not exist in the table to the default data network.
  • a method of operating a terminal apparatus comprising: a classification step of classifying a service flow of an uplink packet to be transmitted; Inserting specific information defining a delivery path of a service flow into an uplink packet of a service flow according to the satisfying triggering condition among the separated service flows when the predefined triggering condition is satisfied; And transmitting the uplink packet to the data node.
  • the information inserting step may insert the specific information into the first uplink packet of the service flow.
  • the method further comprises the step of, in an information table composed of a plurality of specific information, retaining policy information for selecting specific information based on the triggering condition;
  • the information inserting step may select and insert the specific information based on the information table and the policy information.
  • the specific information may include a service code that defines at least one of a service type supported in a delivery path, address information of a device corresponding to a destination of a delivery path, service capacity information of the delivery path, and delay information have.
  • a computer program includes the steps of: identifying a service flow of an uplink packet to be transmitted in combination with hardware; Inserting specific information defining a delivery path of a service flow into an uplink packet of a service flow according to the satisfying triggering condition among the separated service flows when the predefined triggering condition is satisfied; And transmitting the uplink packet.
  • FIG. 1 is an exemplary diagram illustrating an existing Uplink Classifier (ULCL) system of the present invention.
  • ULCL Uplink Classifier
  • FIG. 2 is an exemplary diagram showing a ULCL function of a terminal subject proposed in the present invention
  • FIG. 3 is a block diagram illustrating a configuration of a terminal apparatus according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing a configuration of a data transmitting / receiving apparatus according to an embodiment of the present invention
  • FIG. 5 is an exemplary diagram illustrating the configuration of specific information inserted by a terminal according to an embodiment of the present invention
  • FIG. 6 is an exemplary diagram showing a configuration of a definition table held in a data transmitting / receiving apparatus according to an embodiment of the present invention
  • FIG. 7 is an exemplary diagram showing an example in which the ULCL function of the terminal subject proposed in the present invention is realized
  • FIG. 8 is a flowchart illustrating an operation method of a terminal according to an exemplary embodiment of the present invention.
  • FIG. 9 is a flowchart illustrating an operation method of a data transmitting / receiving apparatus according to an embodiment of the present invention.
  • the present invention relates to a technology for controlling a delivery path of terminal data.
  • the present invention considers the 5G communication system introduced in the future.
  • 5G communication system is an advanced mobile broadband (EMBB) / massively machine type communications (MMTC) / ultra-reliable and large scale communication (MMLC) system, which accommodates as many terminals as possible based on limited radio resources. low latency communications, high reliability and low latency communications).
  • EMBB advanced mobile broadband
  • MMTC massively machine type communications
  • MMLC ultra-reliable and large scale communication
  • the 5G defines a network structure for end-to-end support of terminal, base station (access), core and server.
  • a network structure is defined in which a control signaling function area and a data transmission / reception function area (User Plane) are classified.
  • control node of the control plane in the 5G includes an Access and Mobility Function (AMF) for controlling access to the wireless section of the terminal, a Policy Control Function (PCF) for managing / controlling policies such as subscriber information and subscriber- ), A session management function (SMF) for managing and controlling sessions for using data services for each terminal, and the like.
  • AMF Access and Mobility Function
  • PCF Policy Control Function
  • SMF session management function
  • the data node of User Plane in 5G is defined as a UPF (User Plane Function) that transmits and receives data between a terminal and a data network (for example, the Internet) through a session with the terminal based on the SMF control .
  • UPF User Plane Function
  • the 5G defines a ULCL (Uplink Classifier) that steers the terminal's traffic to a local network close to the UE in the UPF of the User Plane.
  • ULCL Uplink Classifier
  • the ULCL function is a technique realized in the UPF of the User Plane, and is a technique of steering a terminal's traffic to a local network (e.g., a URLLC network, 10) at a nearby location.
  • a local network e.g., a URLLC network, 10.
  • the 5G ULCL function is based on that the Control Plane SMF informs each UPF by transmitting information such as the terminal identifier / destination IP address / Prefix of the traffic that the UPF should steer the delivery path to the local network.
  • each UPF transmits the corresponding uplink packet (traffic) among the received uplink packets to a local network (e.g., a URLLC network, a local area network, and the like) based on information (terminal identifier / destination IP address / 10).
  • a local network e.g., a URLLC network, a local area network, and the like
  • UPF is totally dependent on information received from SMF.
  • the 5G ULCL function currently has a problem of overhead to continuously manage a large amount of information such as a terminal identifier / destination IP address / Prefix to be delivered to each UPF from the viewpoint of SMF.
  • the ULCL function of 5G currently has a problem of overhead to continuously manage information such as the transmitted terminal identifier / destination IP address / Prefix in view of the UPF.
  • the 5G ULCL function currently has a problem of increased signaling between the SMF and the UPF.
  • the present invention proposes a new scheme for the terminal to control the propagation path steering for its own traffic, thereby effectively solving the above-mentioned problem of the current 5G ULCL function.
  • the present invention proposes a terminal apparatus and a data transmitting / receiving apparatus capable of realizing a proposed new scheme (hereinafter referred to as ULCL of a terminal main body).
  • the terminal device 100 has a function (e.g., ULCL Agent) for realizing the ULCL of the terminal subject proposed by the present invention.
  • a function e.g., ULCL Agent
  • the data transmission / reception device 200 of the present invention refers to UPF of User Plane.
  • the data transmitting and receiving apparatus 200 that is, the UPF 200 has a function (for example, ULCL Server) for realizing the ULCL of the terminal subject proposed by the present invention.
  • a function for example, ULCL Server
  • the ULCL agent of the terminal device 100 and the ULCL server of the data transmitting and receiving device 200 may be distributed or installed in the form of an application (or a program), or may be installed in the terminal device 100, Or may be hardware (e.g., Chip) in the form of being mounted on the device 200.
  • the terminal device 100 distinguishes the service flows of uplink packets to be transmitted based on the operation of the ULCL Agent.
  • the terminal device 100 Based on the operation of the ULCL Agent, the terminal device 100 inserts specific information defining the delivery path of the service flow into the uplink packet of the target service flow to which the terminal-subject ULCL function is to be applied.
  • the terminal device 100 transmits the uplink packet to the data node, that is, the data transmission / reception device 200 (UPF) of its own.
  • the data node that is, the data transmission / reception device 200 (UPF) of its own.
  • the data transmitting / receiving device (200, UPF) checks whether specific information defining a transmission path exists in an uplink packet when receiving an uplink packet from the terminal device (100).
  • the data transmission / reception device 200 URLLC network, 10
  • a third DN e.g., internal network_UPF, 20
  • the data transmission / reception device (UPF) 200 transmits the uplink packet, which is divided into the service flows that generated the delivery path according to the specific information, among the received uplink packets, And can be transmitted to the local network 10 or 20 according to a path (transmission path).
  • the data transmission / reception device 200 may transmit the downlink packet to the terminal device 100 based on the service flow path Lt; / RTI >
  • the ULCL function of the terminal device proposed in the present invention is a function that the terminal device 100 transmits a delivery path based on specific information set between the terminal device 100 and the data transmitting / receiving device 200 (UPF)
  • the data transmission / reception device 200 UPF
  • the data transmission / reception device 200 can generate a delivery route according to specific information and steer traffic (uplink / downlink packet) to the local network 10.
  • the ULCL function of the terminal subject proposed in the present invention it is possible to independently steer a delivery path for its own traffic based on specific information from the terminal viewpoint, and to provide information (terminal identifier / Destination IP address / Prefix, etc.).
  • the terminal apparatus 100 includes a classifying unit 110, an information inserting unit 120, and a transmitting unit 130.
  • the terminal device 100 may further include a policy storage unit 140.
  • some or all of the division unit 110, the information insertion unit 120, the transmission unit 130, and the policy storage unit 140 may be implemented as a ULCL Agent for realizing the ULCL of the terminal subject proposed in the present invention .
  • the classifying unit 110 classifies the service flows of uplink packets to be transmitted.
  • the division unit 110 divides the information included in the packet header, for example, 5-tuple (Source IP, Destination IP, Source Port, Destination Port, Protocol ID).
  • the division unit 110 may include application information such as a content header (HTTP / 2, FTP, QUIC Protocol), video / audio information, MPEG-DASH, WebRTC, RSTP).
  • application information such as a content header (HTTP / 2, FTP, QUIC Protocol), video / audio information, MPEG-DASH, WebRTC, RSTP).
  • the information inserting unit 120 may be configured to specify a delivery path of the service flow in the uplink packet of the service flow according to the presently satisfying triggering condition among the service flows classified by the classifying unit 110 when the predefined triggering condition is satisfied Insert information.
  • the information inserting unit 120 activates the ULCL function of the terminal subject when the predefined triggering condition is satisfied, and transmits to the uplink packet of the service flow according to the present satisfying triggering condition specific information for defining the delivery path of the service flow Can be inserted.
  • the triggering condition may be used when a specific service flow requiring a specific information-based delivery path establishment is generated, or when a slice ID of a specific service type requiring a specific information-based delivery path setting is used, If this specific information-based delivery path setting is lowered below a certain value required, or if a specific information-based delivery path is located in a particular area where a route setting is required, or if the traffic usage amount exceeds a certain value requiring delivery path establishment , Or when receiving a control event from the core network, it can be defined as being satisfied.
  • the information inserting unit 120 can determine that the triggering condition is satisfied when a specific service flow requiring the delivery path setting is generated in the terminal device 100.
  • the information inserting unit 120 may insert the specific information defining the delivery path of the service flow into the uplink packet of the specific service flow, based on the currently satisfied triggering condition and the policy information to be described later.
  • the information inserting unit 120 may determine that the triggering condition is satisfied .
  • the information inserting unit 120 inserts the uplink packet of the service flow according to the slice ID (for example, eMBB, mMTC, URLLC, etc.) of the specific service type on the basis of the present satisfying triggering condition and policy information Specific information defining the delivery path of the service flow can be inserted.
  • the slice ID for example, eMBB, mMTC, URLLC, etc.
  • the information inserting unit 120 can determine that the triggering condition is satisfied have.
  • the information inserting unit 120 inserts each service flow used in the terminal device 100 or some service flows (for example, a slice ID of a specific service type (for example, For example, eMBB, mMTC, URLLC, etc.) in the uplink packet.
  • a slice ID of a specific service type for example, For example, eMBB, mMTC, URLLC, etc.
  • the information inserting unit 120 can determine that the triggering condition is satisfied when the terminal device 100 is located in a specific area where the transmission path setting is required.
  • the information inserting unit 120 inserts each service flow used in the terminal device 100 or some service flows (for example, a slice ID of a specific service type (for example, For example, eMBB, mMTC, URLLC, etc.) in the uplink packet.
  • a slice ID of a specific service type for example, For example, eMBB, mMTC, URLLC, etc.
  • the information inserting unit 120 when the traffic usage amount of the terminal device 100 exceeds a specific value requiring a delivery path setting, or when receiving a control event from the core network, the information inserting unit 120 is satisfied Can be defined.
  • the information inserting unit 120 inserts each service flow used in the terminal device 100 or some service flows (for example, a slice ID of a specific service type (for example, For example, eMBB, mMTC, URLLC, etc.) in the uplink packet.
  • a slice ID of a specific service type for example, For example, eMBB, mMTC, URLLC, etc.
  • the information inserter 120 determines that the triggering condition is satisfied can do.
  • 5G N / W e.g., AMF, 3rd Party MEC Server, or Mgmt Server
  • the information inserting unit 120 inserts each service flow used in the terminal device 100 or some service flows (for example, a slice ID of a specific service type (for example, For example, eMBB, mMTC, URLLC, etc.) in the uplink packet.
  • a slice ID of a specific service type for example, For example, eMBB, mMTC, URLLC, etc.
  • the information inserting unit 120 may insert specific information into one uplink packet among the uplink packets of the service flow, insert specific information into a plurality of uplink packets, 100 and the data transmission / reception device 200 (UPF).
  • the information inserting unit 120 may insert specific information into one uplink packet among the uplink packets of the service flow, insert specific information into a plurality of uplink packets, 100 and the data transmission / reception device 200 (UPF).
  • the information inserting unit 120 may insert specific information into the first uplink packet of the service flow when inserting specific information into one of the uplink packets of the service flow, It is possible to insert specific information into the Nth uplink packet set between the terminal apparatus 100 and the data transmission / reception apparatus 200 (UPF).
  • UPF data transmission / reception apparatus 200
  • the information inserting unit 120 inserts the specific information defining the delivery path of the service flow into the first uplink packet of the uplink packet for the service flow according to the present triggering condition, Packets and no specific information thereafter.
  • the information inserting unit 120 determines (selects) the specific information defining the delivery path of the service flow based on the previously stored information table and policy information, and inserts it into the uplink packet.
  • policy information for selecting specific information based on satisfactory triggering conditions may be held in an information table composed of a plurality of specific information.
  • the policy storage unit 140 may store / retain policy information for selecting specific information based on an information table composed of a plurality of specific information and a triggering condition.
  • the information table and the policy information stored / held in the policy storage unit 140 may be received from the core network, i.e., 5G N / W (e.g., AMF, 3rd Party MEC Server, or Mgmt Server) It can be updated to the latest through the method of requesting / receiving 5G N / W, such as the start time of operation of terminal device 100 (specifically, ULCL Agent), satisfaction of triggering condition, periodic time,
  • 5G N / W e.g., AMF, 3rd Party MEC Server, or Mgmt Server
  • the information table composed of a plurality of specific information includes at least one of service type (eMBB, mMTC, URLLC, etc.) of the delivery route, address information of the device corresponding to the destination of the delivery route, service capacity information of the delivery route, , Or an information table including a plurality of service codes.
  • service type eMBB, mMTC, URLLC, etc.
  • the policy information means a policy defined to determine which particular information (service code) is to be inserted into a certain service flow, taking into account the currently satisfied triggering condition among a plurality of specific information in the information table.
  • the information inserting unit 120 inserts a target service flow to which the UE-based ULCL function is to be applied based on the currently satisfied triggering condition and policy information among the service flows classified by the classifying unit 110 For example, the service flow of the service type URLLC), and selects specific information (service code) to be inserted in the target service flow (for example, the service flow of the service type URLLC) in the information table.
  • the information inserting unit 120 may insert specific information (service code) into the first uplink packet of the target service flow (for example, the service flow of the service type URLLC) after the selection time.
  • specific information service code
  • the information inserting unit 120 selects And will not insert it.
  • the field into which the specific information is inserted in the uplink packet may be a field of a position set between the terminal device 100 and the data transmission / reception device 200 (UPF).
  • the specific information may be inserted into the packet header of the uplink packet, for example, the Option field of the IP header, inserted into the Option field of the TCP header, or inserted into the payload field.
  • the specific information includes at least one of a service type (slice ID) supported in a delivery path, address information of a device corresponding to a destination of a delivery path (hereinafter, destination address information), service capacity information of the delivery path, Quot; service "
  • a service type slice ID
  • destination address information address information of a device corresponding to a destination of a delivery path
  • service capacity information of the delivery path Quot; service "
  • the specific information is preferably information in a form of a small size in units of bits.
  • the specific information can be defined as one service code that defines a service type (slice ID), destination address information, service capacity information of a delivery path, and delay information.
  • the specific information (a) inserted in the uplink packet will be one service code (ULCL Code).
  • the service type e.g., eMBB, mMTC, URLLC, etc.
  • the service capacity information of the delivery path and the delay information are predefined (definition table described later).
  • the specific information can be defined as a service code that defines destination address information, service capacity information of a delivery path, and delay information by a service type (slice ID) and a service type (slice ID).
  • the specific information (b) inserted in the uplink packet will include Slice ID and ULCL Code.
  • the data transmission / reception device 200 preferably defines the destination address information (IP / Port), the service capacity information of the delivery path and the delay information for each service type (slice ID) (Definition table described later).
  • the specific information is a service code that defines service capacity information and delay information of a delivery path by a service type (slice ID), service type (slice ID), destination address information (IP / Port) Can be defined.
  • the specific information (c) inserted into the uplink packet will include the Slice ID, the ULCL Code, and the destination address information (IP / Port).
  • the data transmission / reception device 200 has predefined service capacity information and delay information of the delivery path for each service type (slice ID) and service code combination (definition table described later).
  • the data transmission / reception device 200 can use the destination address information (IP / Port) in the specific information when generating the delivery route.
  • the size of the definition table to be held in the data transmission / reception device 200 can be reduced compared to the first and second embodiments.
  • the transmitting unit 130 transmits the uplink packet to the data node, that is, the data transmitting / receiving device 200 (UPF) of the terminal device 100.
  • the data node that is, the data transmitting / receiving device 200 (UPF) of the terminal device 100.
  • the data transmitting / receiving device 200 checks whether specific information (for example, a service code) defining the delivery path exists in the uplink packet when receiving the uplink packet from the terminal device 100, A route to the local network (e.g., the URLLC network 10) may be generated according to the service code, and the generated delivery path may be set as the service flow path of the uplink packet.
  • specific information for example, a service code
  • the information inserting unit 120 inserts specific information into at least one uplink packet (e.g., the first uplink packet) and transmits the request information requesting deletion of the delivery path to the last uplink packet of the transmitted service flow Can be inserted.
  • the request information is also information in the form of a service code composed of a small size in units of bits, and the field into which the request information is inserted in the uplink packet is also transmitted to the terminal device 100 and the data transmitting / receiving device 200 , UPF).
  • the data transmitting / receiving device 200 It is possible to delete the transmission path to the local network (e.g., URLLC network 10) set as the service flow path of the link packet.
  • the data transmitting and receiving apparatus 200 includes an identifying unit 210, a path setting unit 220, and a transmitting unit 230 .
  • the UPF 200 of the present invention may further include a local interlocking unit 240.
  • identifying unit 210 may be implemented as a ULCL Server for realizing the ULCL of the terminal subject proposed in the present invention .
  • the confirmation unit 210 determines whether specific information for defining a transmission path exists in the uplink packet when the uplink packet is received.
  • the confirmation unit 210 can check whether specific information (e.g., service code) defining a delivery path exists in the uplink packet every time an uplink packet is received from the terminal device 100.
  • specific information e.g., service code
  • the confirmation section 210 confirms that the terminal device 100 (E.g., service code) in the uplink packet of the service flow to which the UTRAN is subject to ULCL.
  • the path setting unit 220 When the confirmation unit 210 confirms the presence of specific information (e.g., service code), the path setting unit 220 generates a delivery path based on the identified specific information (e.g., service code) As a service flow path.
  • specific information e.g., service code
  • the local interworking unit 240 is a functional unit that interworks with at least one local network, and supports at least one transmission path generation that uses a device in each local network as a destination.
  • the UPF 200 of the present invention is configured to transmit a local network (e.g., a second DN 10 (e.g., URLLC network) and a third DN 20 (e.g., : Internal network _UPF), and the local interworking unit 240 provides this connection relationship.
  • a local network e.g., a second DN 10 (e.g., URLLC network) and a third DN 20 (e.g., : Internal network _UPF)
  • the local interworking unit 240 provides this connection relationship.
  • the UPF 200 (especially the local interworking unit 240) is interworked with the N6 I / F defined by the 5G service interface based on the second DN 10 (e.g., the URLLC network)
  • the second DN 10 e.g., the URLLC network
  • Example: Internal network _UPF can be interworked with N9 I / F defined on the basis of 5G service interface.
  • the service type (e.g., eMBB, mMTC, URLLC, etc.) of the delivery path to be generated according to the specific information, the address information of the device corresponding to the destination of the delivery path, The service capacity information of the delivery path, and the definition table in which the delay information is predefined, may be held / stored.
  • the service type e.g., eMBB, mMTC, URLLC, etc.
  • the definition table of the path setting unit 220 can be received from the core network, that is, 5G N / W (e.g. AMF, 3rd Party MEC Server, Mgmt Server) May be updated at the same time when the information table and the policy information are updated.
  • 5G N / W e.g. AMF, 3rd Party MEC Server, Mgmt Server
  • the specific information is defined by a single service code.
  • the definition table includes service type (e.g., eMBB, mMTC, URLLC, etc.) of a delivery path to be generated according to the service code, (IP / Port), service capacity information of the delivery path, and delay information may be predefined information.
  • the UPF 200 includes a service type (Slice ID such as eMBB, mMTC, URLLC, etc.) of a delivery path to be generated according to the service code for each service code (ULCL Code)
  • a definition table in which destination address information (IP / Port), service capacity information of a delivery path, and delay information are predefined can be held.
  • the specific information is defined by a service type (slice ID) and a service code.
  • the definition table includes, for each service type (slice ID) and service code combination, destination address information (IP / Port)
  • the service capacity information and the delay information of the mobile station may be predefined information.
  • the specific information is defined by a service type (slice ID), a service code and destination address information (IP / Port), and the definition table includes a service type (slice ID)
  • the service capacity information and the delay information of the mobile station may be predefined information.
  • the route setting unit 220 sets the information indicated by the identified specific information (e.g., service code) when the confirmation unit 210 confirms the presence of specific information (e.g., service code) in this uplink packet (Eg URLLC), address information (eg 172.16.XXX.YYY) corresponding to the destination device (eg local server for URLLC service), service capacity information of the delivery path (eg 1Gb / s), and delay information (eg, 0.1 ms) from the definition table.
  • specific information e.g., service code
  • path setting unit 220 can generate the delivery path according to the information confirmed from the definition table within the support range of the local linking unit 240, It is possible to generate a transmission path to the local network 10 in accordance with the route.
  • the route setting unit 220 stores the mapping information obtained by mapping the service flow classification information (e.g., 5-tuple) of the current uplink packet and the newly generated transmission route in the route table, For example, a service code) can be set as the service flow path of this uplink packet.
  • the service flow classification information e.g., 5-tuple
  • a service code can be set as the service flow path of this uplink packet.
  • the transmitting unit 230 transmits the uplink packet, which is divided into the service flow that generated the delivery path among the received uplink packets, to the corresponding delivery path.
  • the transmitter 230 identifies service flows based on the information included in the packet header, for example, 5-tuple (Source IP, Destination IP, Source Port, Destination Port, Protocol ID) .
  • the transmitting unit 230 checks whether the uplink packet service flow classification information (5-tuple) exists in the path table for each uplink packet.
  • the service flow path of this uplink packet is preliminarily set to the transmission path to the local network (e.g., the URLLC network 10) , And the uplink packet may or may not include specific information (e.g., a service code).
  • the service flow classification information 5-tuple of the uplink packet does not exist in the route table, it may be the case that the transmission path creation fails or the application subject to the terminal subject ULCL proposed in the present invention is not applied.
  • the transmission unit 230 transmits the uplink packet when the service flow classification information 5-tuple among the received uplink packets exists in the route table to the local network (e.g., URLLC network, 10). ≪ / RTI >
  • the transmitting unit 230 transmits the uplink packet in the case where specific information (e.g., service code) of the received uplink packet exists but the route setting unit 220 fails to generate the delivery route, And can be transmitted to the first DN (e.g., the Internet).
  • specific information e.g., service code
  • the transmitting unit 230 transmits the uplink packet when the service flow classification information (5-tuple) in the received uplink packet does not exist in the route table, to the default data network, that is, ).
  • the data transmitting / receiving device 200 transmits the traffic (uplink packet) to the local network 10 or 20 in the delivery path according to the service code based on the operation of the ULCL Server, To the terminal device 100 based on the service flow path (delivery path) when the response traffic (downlink packet) is received.
  • the path setting unit 220 can delete the transmission path set as the service flow path of the uplink packet.
  • the confirmation unit 210 can confirm not only the specific information defining the delivery path in the uplink packet but also the request information requesting deletion of the delivery path exists in the form of a service code.
  • the terminal 100 inserts and transmits a service code for requesting deletion of a transmission path to the last uplink packet of a service flow subject to application of the terminal subject ULCL proposed by the present invention
  • the service code of the transmission path deletion request may be confirmed in the last uplink packet in which the service flow of the target of UCPL application to the terminal subject ULCL ends.
  • the path setting unit 220 sets up the uplink Deletes the delivery path set to the service flow path of the packet.
  • the path setting unit 220 deletes the transmission path set as the service flow path of the uplink packet, and deletes the mapping information previously stored in the path table.
  • the path setting unit 220 determines whether or not a packet transmission / reception occurs such that a predetermined path maintenance time elapses from a set time of a previously generated path, or a predetermined threshold time elapses, It is also possible to delete the transmission path corresponding to the reception of the control event from the core network.
  • the ULCL function of the terminal subject proposed by the present invention is based on the specific information (e.g., service code) set up between the terminal device 100 and the data transmission / reception device 200 (UPF) (E.g., a service code) defining a delivery path is inserted into a determination (selection) and an uplink packet and transmitted, the data transmission / reception device 200 (UPF) Create routes and steer traffic to the local network.
  • specific information e.g., service code
  • UPF data transmission / reception device 200
  • UPF data transmission / reception device 200
  • the ULCL of the terminal subject proposed by the present invention can steer the delivery path for its own traffic (uplink / downlink packet) on the basis of specific information (for example, service code) from the viewpoint of the terminal.
  • specific information for example, service code
  • the terminal identifier / destination IP address / Prefix, etc. since the ULCL of the terminal subject proposed by the present invention does not depend on information (terminal identifier / destination IP address / Prefix, etc.) provided from the SMF in terms of the UPF, the terminal identifier / destination The overhead of maintaining large amounts of information such as IP address / Prefix, the situation where UPF depends on SMF to wait for necessary information (or command), information such as terminal identifier / destination IP address / Prefix to which UPF is delivered Overheads that need to be managed continuously, increased signaling between the SMF and the UPF, effectively addressing the concerns of existing 5G ULCL functionality.
  • the concern of the conventional 5G ULCL function can be solved by realizing a new technology that can control the propagation path steering for the own traffic from the viewpoint of the terminal, that is, the ULCL of the terminal subject,
  • the effect of efficiently supporting the request / performance of the supporting URLLC service is derived.
  • the terminal device 100 can transmit / receive User Plane traffic to a default data network, i.e., a first DN (e.g., the Internet) through the UPF 200 (S10).
  • a default data network i.e., a first DN (e.g., the Internet)
  • S10 User Plane traffic
  • the terminal device 100 when satisfying the predefined triggering condition (S20), transmits the terminal entity ULCL (5) to the core network 5G N / W (e.g. AMF, 3rd party MEC Server, (E.g., information table and policy information) (S30, S35), and store the information table and policy information (S40).
  • the core network 5G N / W e.g. AMF, 3rd party MEC Server, (E.g., information table and policy information) (S30, S35), and store the information table and policy information (S40).
  • the terminal device 100 inserts specific information (e.g., a ULCL Code) defining a delivery path of a service flow in an uplink packet of a target service flow to which a terminal subject ULCL function is to be applied, (A second DN or a third DN, e.g., a URLLC network) according to specific information in the uplink packet (e.g., ULCL Code)
  • specific information e.g., ULCL Code
  • User Plane traffic can be steered to the local network (S50).
  • the ULCL agent 100 of the present invention can provide information (e.g., an information table and a policy) for the UE-based ULCL function due to various status changes such as a new ULCL code being given to the core network or a new Slice ID being given. Information) update is required (S60), the information table and the policy information can be updated to the latest (S80) through the request and supply to the core network (S70, S75).
  • information e.g., an information table and a policy
  • the terminal device 100 (ULCL Agent) of the present invention preferably stores an information table and policy information (S100).
  • the information table includes at least one of a service type (e.g., eMBB, mMTC, URLLC, etc.) of a delivery path, address information of a device corresponding to a destination of a delivery path, service capacity information of a delivery path, Information, that is, an information table including a plurality of service codes.
  • a service type e.g., eMBB, mMTC, URLLC, etc.
  • Information that is, an information table including a plurality of service codes.
  • the policy information means a policy defined to determine which specific information (service code) is to be inserted into a certain service flow, taking into account the satisfying triggering condition among a plurality of specific information in the information table.
  • the terminal device 100 of the present invention can transmit the information included in the packet header, for example, 5-tuple (Source IP, Destination IP, Source Port, Destination Port, and Protocol ID) (S120).
  • 5-tuple Source IP, Destination IP, Source Port, Destination Port, and Protocol ID
  • S120 Protocol ID
  • the terminal device (100, ULCL Agent) of the present invention can classify the service type (eMBB, mMTC, URLLC, etc.) for the service flow of the uplink packet (S120).
  • the service type eMBB, mMTC, URLLC, etc.
  • the terminal device 100 (ULCL Agent) of the present invention continuously judges whether or not the predefined triggering condition is satisfied (S125).
  • FIG. 8 shows steps S 120 and S 125 after step S 120 for convenience of explanation, the terminal device 100 (ULCL Agent) of the present invention always performs step S 125 to continuously determine whether the triggering condition is satisfied .
  • the triggering condition may be used when a specific service flow requiring a specific information-based delivery path establishment is generated, or when a slice ID of a specific service type requiring a specific information-based delivery path setting is used, If this specific information-based delivery path setting is lowered below a certain value required, or if a specific information-based delivery path is located in a particular area where a route setting is required, or if the traffic usage amount exceeds a certain value requiring delivery path establishment , Or when receiving a control event from the core network, it can be defined as being satisfied.
  • the terminal device 100 (ULCL Agent) of the present invention determines, based on the currently satisfied triggering condition and the policy information, the target service flow to which the terminal- (For example, service code) to be inserted into the target service flow (for example, the service flow of the service type URLLC) from the information table and transmits specific information (for example, service code ) Can be inserted and then transmitted.
  • the target service flow to which the terminal- (For example, service code) to be inserted into the target service flow for example, the service flow of the service type URLLC
  • the terminal device 100 (ULCL Agent) of the present invention activates the ULCL function of the terminal subject, and based on the currently satisfied triggering condition and policy information, (For example, a service flow of the service type URLLC) and confirms that the ULCL function of the terminal subject is the first uplink packet of the target service flow (for example, the service flow of the service type URLLC) after the activation point of the ULCL function of the terminal subject (S130).
  • the terminal device 100 (ULCL Agent) of the present invention is a first uplink packet of a target service flow (for example, a service flow of a service type URLLC) (Yes in S130) (For example, a service code) to be inserted into the uplink packet (S140).
  • a target service flow for example, a service flow of a service type URLLC
  • S140 Service code
  • the terminal device 100 It is confirmed whether it is the last uplink packet of the service flow (S170).
  • the terminal device 100 (ULCL Agent) of the present invention may insert the request information requesting deletion of the delivery route, that is, the service code ).
  • the terminal device 100 of the present invention transmits the uplink packet to the data node, that is, the data transmission / reception device 200 (UPF) of the terminal device 100 (S150).
  • the data node that is, the data transmission / reception device 200 (UPF) of the terminal device 100 (S150).
  • the terminal device 100 (ULCL Agent) of the present invention repeats the step S110 and subsequent steps unless the operation is turned off (S160 No), and determines whether specific information should be selected and inserted every time an uplink packet to be transmitted is generated Will continue to determine and insert.
  • the UPF 200 of the present invention checks whether a ULCL code exists in an uplink packet when receiving an uplink packet (S200) (S210).
  • the UPF 200 of the present invention is a service code that defines a delivery path in the uplink packet (Yes in S215) (Eg URLLC), address information (eg 172.16.XXX.YYY) corresponding to the destination device (eg local server for URLLC service), service capacity information of the delivery path (eg 1Gb / s) and delay information (e.g., 0.1 ms) from the definition table, and determines whether a delivery path according to the thus confirmed information can be generated within the support range of the local interworking unit 240 (S220).
  • Eg URLLC a service code that defines a delivery path in the uplink packet
  • address information eg 172.16.XXX.YYY
  • service capacity information eg 1Gb / s
  • delay information e.g., 0.1 ms
  • the UPF 200 of the present invention can be generated within the support range of the local interworking unit 240 (S220 Yes)
  • a transmission path may be generated and the uplink packet may be transmitted to the corresponding transmission path (S230).
  • the UPF 200 stores the mapping information in which the service flow classification information (e.g., 5-tuple) of this uplink packet and the currently generated transmission route are mapped to the route table,
  • the transmission path generated according to the service code can be set as the service flow path of the uplink packet (S240).
  • the ULCL server 200 can not generate the uplink packet within the supported range of the local interworking unit 240, (E.g., the Internet) (S280).
  • the local interworking unit 240 E.g., the Internet
  • the UPF 200 of the present invention determines whether the service flow classification information 5-tuple of the uplink packet exists in the route table (S260).
  • the UPF 200 of the present invention transmits the uplink packet to the local network For example, a URLLC network, 10 (S270).
  • the local network For example, a URLLC network, 10 (S270).
  • the UPF 200 of the present invention transmits the uplink packet to the default data network : Internet) (S280).
  • the UPF (200, ULCL Server) of the present invention determines whether the service code is a service code requesting deletion of a delivery path (No in S215)
  • the transmission path set as the service flow path of the uplink packet is deleted according to the code, and the mapping information pre-stored in the route table can also be deleted (S290).
  • the UPF (200, ULCL Server) according to the present invention transmits packet transmission / reception in accordance with a predefined policy so that a preset path maintenance time elapses from a set time of a previously generated path, It would also be possible to delete the propagation path that did not occur.
  • the UPF 200 of the present invention repeats the step S200 and subsequent steps until the operation is turned off (S250 No), so that each time an uplink packet is received, specific information confirmation and delivery path generation, uplink packet transmission Lt; / RTI >
  • the method of operating the terminal device according to the embodiment of the present invention and the method of operating the data transmission / reception device can be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium .
  • the computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination.
  • the program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software.
  • Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like.
  • Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like.
  • the hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne une nouvelle technologie capable de commander de façon autonome l'orientation de trajets de propagation pour le trafic d'un utilisateur du point de vue d'un terminal, c'est-à-dire une technologie mettant en œuvre un ULCL d'un terminal sujet de façon à pouvoir résoudre les préoccupations concernant une fonction conventionnelle d'ULCL 5G et à pouvoir prendre en charge de façon efficiente des demandes et la réalisation d'un service d'URLLC pris en charge dans la 5G.
PCT/KR2018/012330 2017-10-25 2018-10-18 Dispositif terminal, dispositif d'émission/réception de données, et procédé d'exploitation de dispositif Ceased WO2019083223A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/758,143 US11778504B2 (en) 2017-10-25 2018-10-18 Terminal device, data transmission/reception device, and operating method of device

Applications Claiming Priority (4)

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KR20170139312 2017-10-25
KR10-2017-0139312 2017-10-25
KR10-2018-0124714 2018-10-18
KR1020180124714A KR102258026B1 (ko) 2017-10-25 2018-10-18 단말장치 및 데이터 송수신장치, 그 장치의 동작 방법

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