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WO2019078212A1 - Procédé de commande de communication et procédé de changement de cible de connexion - Google Patents

Procédé de commande de communication et procédé de changement de cible de connexion Download PDF

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Publication number
WO2019078212A1
WO2019078212A1 PCT/JP2018/038529 JP2018038529W WO2019078212A1 WO 2019078212 A1 WO2019078212 A1 WO 2019078212A1 JP 2018038529 W JP2018038529 W JP 2018038529W WO 2019078212 A1 WO2019078212 A1 WO 2019078212A1
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WIPO (PCT)
Prior art keywords
slice
communication terminal
information
communication
accessible
Prior art date
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Ceased
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PCT/JP2018/038529
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English (en)
Japanese (ja)
Inventor
拓也 下城
マラ レディ サマ
スリサクル タコルスリ
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NTT Docomo Inc
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NTT Docomo Inc
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Publication of WO2019078212A1 publication Critical patent/WO2019078212A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface

Definitions

  • the present invention relates to a communication control method and a connection destination changing method.
  • Non-Patent Document 1 discloses a specific method for connecting a UE to a slice.
  • Non-Patent Document 1 can not meet, for example, the need to change the slice to be accessed by the UE according to the position of the UE.
  • the present invention has been made in view of the above, and it is an object of the present invention to provide a communication control method and a connection destination changing method capable of changing a slice accessed by a communication terminal according to the position of the communication terminal.
  • a communication control method is a communication control method by a communication control device that controls access of a communication terminal to a slice that is a virtual network generated on a network infrastructure, The communication at the position based on the information on the current position of the communication terminal acquired at the position information acquiring step of acquiring information on the current position of the communication terminal requesting the communication connection to the slice, and the position information acquiring step at the position information acquiring step A slice information creation step of creating information related to a slice accessible to a terminal, and slice information transmission of transmitting information pertaining to a slice accessible to the communication terminal created in the slice information creation step to the communication terminal And step.
  • the information on the slice accessible to the communication terminal at the position is created based on the information on the current position of the communication terminal, and is transmitted to the communication terminal. Therefore, when the position of the communication terminal is changed, it is possible to provide information related to slices that can be accessed by the communication terminal according to the position of the communication terminal. Therefore, it is possible to change the slice accessed by the communication terminal according to the position of the communication terminal.
  • a connection destination changing method is a connection destination changing method by a communication terminal that accesses a slice that is a virtual network generated on a network infrastructure, wherein the communication terminal performs communication control Access to a specific slice based on information related to an accessible slice at the current position transmitted from the device, and using the movement of the own terminal as a trigger to determine whether it is necessary to change the slice to be accessed A necessity determination step, and a connection destination change processing step for performing processing related to changing the slice to be accessed when it is determined in the connection destination change necessity determination step that change of the slice to be accessed is required; Have.
  • the communication terminal uses the movement of the own terminal as a trigger to determine whether it is necessary to change the slice to be accessed based on the information related to the slice accessible at the current position. Based on the processing for changing the slice to be accessed is performed. As described above, the communication terminal recognizes that the information related to the accessible slice is the information corresponding to the position of the communication terminal, and determines whether to change the slice to be accessed as the own terminal moves. The slice to be accessed is changed as necessary. Therefore, it is possible to change the slice accessed by the communication terminal according to the position of the communication terminal.
  • a communication control method and a connection destination changing method capable of changing a slice accessed by a communication terminal according to the position of the communication terminal.
  • the communication system 1 is a system included in a 5G (5th Generation, 5th generation mobile communication system) network system. That is, the communication system 1 is a mobile communication network, and is a system for providing a network service by data communication to a UE (User Equipment: user terminal) 50 which is a communication terminal used by a user.
  • the network service refers to a service using network resources such as communication service (exclusive line service etc.) and application service (moving image distribution, service using a sensor device such as an embedded device).
  • the communication system 1 also includes a plurality of slices.
  • a slice is a virtualized network or service network that virtually separates the resources of links and nodes of network devices, combines the separated resources, and is logically generated on the network infrastructure. is there. Slices separate resources and do not interfere with each other.
  • FIG. 1 shows three slices NS # 1 to NS # 3, the number of slices is not limited to this.
  • the communication system 1 includes eNBs 10A and 10B (eNodeB), AMF 20 (Access and Mobility Management Function: communication control device), UDM 30 (Unified Data Management), NSSF 35 (Network Slice Selection Function), and SMF 40. (Session Management Function).
  • UE60 is implement
  • two eNBs are shown as “eNB1” and “eNB2”.
  • the eNBs 10A and 10B are base station apparatuses for the UE 50 to perform communication connection by wireless communication. Each of the eNBs 10A and 10B is included in an RAN (Regional Area Network) which is an access network used when the UE 50 performs communication connection.
  • the areas covered by the eNBs 10A and 10B are set. Specifically, the eNB 10A covers an area (TA: Tracking Area) specified by TAI # 1 (Tracking Area Identity), and the eNB 10A covers the area specified by TAI # 2.
  • TAI # 1 may be set as area TAI # 1
  • the area specified by TAI # 2 may be set as area TAI # 2.
  • the UE 50 can perform data communication using the communication system 1 by updating with the eNB of the area corresponding to the position of the UE. It is assumed that the area TAI # 1 and the area TAI # 2 are included in the same position registration area (RA: Registration Area). When the area TAI # 1 and the area TAI # 2 are included in the same position registration area, when moving between the areas described above, the UE 50 may move without updating the position registration or the like. it can.
  • RA Registration Area
  • the AMF 20 is a slice connection server that performs communication connection control between the slice and the UE 50.
  • the AMF 20 has a function as a communication control device in the communication system 1 described in the present embodiment.
  • the AMF 20 transmits, to the UE 50, information for the UE 50 to access a slice.
  • requirement from UE50 is also performed. These will be described later.
  • the UDM 30 has a function of managing, in a database, subscriber information including contract information of a communication terminal including the UE 50, authentication information, communication service information, terminal type information, and location information. Further, when the UE 50 performs communication connection to the slice, the UDM 30 transmits, to the AMF 20, information (Subscribed S-NSSAI) for specifying the slice to which the UE 50 should perform communication connection based on the subscriber information and the like related to the UE 50. Do. This process will be described later.
  • the NSSF 35 has a slice management function.
  • the NSSF 35 is a function of managing information such as the topology of each slice, nodes constituting each slice, and the management range of the AMF 20 with a database.
  • the SMF 40 has a function of managing a session related to the UE 50. Furthermore, the SMF 40 has a function of managing slices. Although FIG. 1 shows a state in which the SMF 40 manages the slices NS # 1 to # 3, a plurality of SMFs 40 may be provided.
  • Each of NS # 1 to # 3 indicates a slice.
  • the network service is provided to the UE 50 by assigning the service to a slice which is a virtualization network.
  • Network slice control technology based on slice selection technology using DCN (Dedicated Core Network) and virtualization technology such as NFV (Network Function Virtualisation) / SDN (Software Defined Network) for creation and management of slices for each service Can be realized using DCN (Dedicated Core Network) and virtualization technology such as NFV (Network Function Virtualisation) / SDN (Software Defined Network) for creation and management of slices for each service Can be realized using DCN (Dedicated Core Network) and virtualization technology such as NFV (Network Function Virtualisation) / SDN (Software Defined Network) for creation and management of slices for each service Can be realized using DCN (Dedicated Core Network) and virtualization technology such as NFV (Network Function Virtualisation) / SDN (Software Defined Network) for creation and management of slices for each service Can be realized using DCN (Dedicated Core Network) and virtualization technology such as NFV (Network Function Virtualisation) / SDN (Software Defined Network) for creation and management of slices for each service Can be realized using DCN (Dedicated Core Network) and
  • the slice control architecture utilizing NFV and SDN consists of a physical / virtual resource layer that composes a network such as a physical server and transport switch, and a network slice that has the necessary function set for providing services on physical / virtual resources.
  • the configuration includes a virtual network layer to be configured, and a service instance layer that is the highest layer and manages service instances provided to end users.
  • the physical / virtual resource layer is managed by, for example, a virtualized infrastructure manager (VIN) including an SDN-C (SDN controller).
  • VIN virtualized infrastructure manager
  • SDN-C SDN controller
  • the virtual network layer is managed by, for example, VNFM (Virtual Network Function Manager) and NFVO (NFV Orchestrator) for each network slice.
  • requirements of service instances in the service instance layer are monitored and guaranteed by an OSS / BSS (Operation Support System / Business Support System).
  • Physical / virtual resource layer allocation is performed by slicing of the network by SDN-C and slicing of server resources by VIM, and a function set is arranged on the allocated resource slices by VNGFM and NFVO.
  • the OSS / BSS monitors the network slice created in this way. As a result, slices corresponding to the service are created and managed.
  • the slices NS # 2 and # 3 are set as slices corresponding to the area TAI # 1 and the area TAI # 2, respectively. Therefore, when using the service provided by the slices NS # 2 and # 3, the UE 50 needs to change the slice to be connected (accessed) in accordance with the position (or the service area). This point will be described later.
  • NSSAI Network Slice Selection Assistance information
  • S-NSSAI is composed of multiple S-NSSAI. That is, NSSAI is a set of multiple S-NSSAI. Examples of each S-NSSAI include "service type”, “slice type” and “slice differentiator”. S-NSSAI includes SD (Slice Differentiator) and SST (Slice / Service type).
  • the UE 50 receives NSSAI (or S-NSSAI) from the network side at the time of registration request. Then, the UE 50 requests access to the slice (establishment of a communication path necessary for access) using the NSSAI.
  • the eNB 10 that has received the NSSAI from the UE 50 selects a common CP (Control Plane) according to the NSSAI.
  • the AMF 20 receives the NSSAI from the UE 50 via the eNB 10, and selects a slice to which the UE 50 is to access based on the received NSSAI.
  • NSSAI and S-NSSAI are used as information for identifying a slice to which the UE 50 accesses.
  • NSSAI and S-NSSAI are appropriately treated in the same line. That is, in the present embodiment, NSSAI and S-NSSAI may be read appropriately.
  • the AMF 20 requests the UDM 30 to issue an NSSAI corresponding to the service based on the request from the UE 50. Then, after S-NSSAI (Subscribed S-NSSAI) corresponding to the request is paid out to the AMF 20 in the UDM 30, a slice corresponding to the S-NSSAI is selected in the NSSF 35. As a result, the slice to which the UE 50 accesses is identified, and processing related to access to the slice is performed. In the above-described conventional slice selection, changing the slice to be accessed by the UE 50 according to the position of the UE 50 is not considered.
  • S-NSSAI Subscribed S-NSSAI
  • the conventional method can not meet the need to change the slice to be accessed according to the position of the UE 50. For example, with respect to UEs 50 in a specific facility, even if there is a request to access a slice different from UEs 50 located in other areas, the above-mentioned conventional method can not cope.
  • the communication system 1 it is possible to solve the above technical problems. That is, it is possible to change the slice to be accessed according to the position of the UE 50.
  • the AMF 20 is characterized in that, when the UE 50 performs location registration, the AMF 20 transmits, to the UE 50, an NSSAI (Allowed NSSAI) according to a location (a serving area) where the UE 50 exists. Therefore, the UE 50 can access a slice corresponding to the position of the UE 50 based on the NSSAI transmitted from the AMF 20.
  • NSSAI Unowed NSSAI
  • the AMF 20 transmits, to the UE 50, NSSAI according to a plurality of types of positions. Specifically, AMF 20 transmits Allowed NSSAI # 1 corresponding to area TAI # 1 and Allowed NSSAI # 2 corresponding to area TAI # 2 to UE 50 at one time. Then, when moving from area TAI # 1 to area TAI # 2, the UE 50 determines, based on the NSSAI transmitted from the AMF 20, whether it is necessary to change the slice to be accessed, and based on the result. Perform processing related to changing the slice to be accessed. By having such a configuration, in the communication system 1, slice access and its change can be performed according to the position of the UE 50.
  • the AMF 20 and the UE 50 for realizing the above functions will be described with reference to FIGS. 2 and 3.
  • the AMF 20 includes a communication unit 21, a transmission information creation unit 22, and an area correspondence information holding unit 23.
  • the communication unit 21 has a function of transmitting and receiving information with another device or the like.
  • the communication unit 21 transmits and receives, for example, information related to the NSSAI with the UE 50. Moreover, information is transmitted / received between the UDM 30, the NSSF 35, and the SMF 40, and a process related to access to the slice of the UE 50 is performed.
  • the transmission information creation unit 22 has a function of determining information related to access to a slice to be transmitted to the UE 50.
  • the information related to access to a slice transmitted from the AMF 20 to the UE 50 is information related to NSSAI used when the UE 50 accesses a slice.
  • the transmission information creation unit 22 of the AMF 20 refers to the information held in the area correspondence information holding unit 23 based on the Subscribed S-NSSAI provided from the UDM 30 and the position where the UE 50 exists. , And the function of creating an NSSAI (Allowed NSSAI) to be transmitted from the AMF 20 to the UE 50.
  • the area correspondence information holding unit 23 holds information on correspondence between the Subscribed S-NSSAI transmitted from the UDM 30 and the S-NSSAI used for each area.
  • An example of information held in the area correspondence information holding unit 23 is shown in FIG.
  • two examples (#A, #B) are shown as Subscribed S-NSSAI, and S-NSSAI used for each area is shown in association with them.
  • Subscribed S-NSSAI # A uses the same S-NSSAI (S-NSSAI # 1) regardless of the area (area specified by TAI).
  • S-Subscribed S-NSSAI # B differs in S-NSSAI used for each area, and uses S-NSSAI # 2 in area TAI # 1 and S-NSSAI # 3 in area TAI # 2. It is indicated to use. As described above, whether to use different S-NSSAIs differs depending on the area depending on Subscribed S-NSSAI.
  • the area correspondence information holding unit 23 holds these pieces of information. Further, based on the information held in the area correspondence information holding unit 23, the transmission information creation unit 22 identifies the slice to be accessed by the UE 50 for each area, and determines the NSSAI to be transmitted to the UE 50. .
  • the slice NS # 1 can be used in any area.
  • slice NS # 2 corresponds to area TAI # 1, and does not correspond to area TAI # 2. Therefore, the slice accessed by the UE 50 needs to be changed from NS # 2 to NS # 3.
  • the S-NSSAI pertaining to slice NS # 1 is S-NSSAI # 1
  • the S-NSSAI pertaining to slice NS # 2 is S-NSSAI # 2
  • the S-NSSAI pertaining to slice NS # 3 is S-NSSAI # Suppose that it is 3.
  • S-NSSAI used by the UE 50 in TAI # 1 is S-NSSAI # 1 and S-NSSAI # 2.
  • S-NSSAI which UE50 uses in TAI # 2 turns into S-NSSAI # 1 and S-NSSAI # 3. Therefore, the transmission information creation unit 22 creates the Allowed NSSAI for each area so as to include these pieces of information.
  • FIG. 4B shows an example of Allowed NSSAI # 1 that can be used in area TAI # 1, and Allowed NSSAI # 2 that can be used in area TAI # 2.
  • Allowed NSSAI # 1 used in area TAI # 1 includes information related to S-NSSAI # 1 and S-NSSAI # 2.
  • Allowed NSSAI # 2 used in area TAI # 2 includes information related to S-NSSAI # 1 and S-NSSAI # 3.
  • the transmission information creation unit 22 creates, for each area (in this embodiment, for each area identified by the TAI), information identifying an available slice in which the UE 50 exists. Then, the information (Allowed NSSAI) related to the two areas created as described above is transmitted by the communication unit 21 to the UE 50.
  • the information on allowed slices may be three or more. Avoiding a new process of acquiring NSSAI from AMF 20 each time UE 50 moves to a different area by providing multiple pieces of information (Allowed NSSAI) relating to accessible slices for each area to UE 50 To prevent an increase in the amount of communication. Therefore, three or more pieces of information (Allowed NSSAI) for each area related to the access slice to be provided to the UE 50 may be provided, and the number thereof is appropriately changed.
  • UE50 when UE50 performs location registration, since UE50 communicates with AMF20, transmission of NSSAI with respect to UE50 can be performed as a part of a location registration process. Therefore, when transmitting a plurality of pieces of information for each area related to a slice to be accessed to UE 50, if the plurality of pieces of information related to the areas included in the same location registration area (RA: Registration Area) are transmitted, the above communication The effect of preventing the increase of the amount is high.
  • RA Registration Area
  • the UE 50 includes a connection destination change necessity determination unit 51, a connection processing unit 52, and a connection information holding unit 53.
  • the connection destination change necessity determination unit 51 determines whether it is necessary to change the slice to be accessed based on the information (Allowed NSSAI) for each area related to the slice to be connected (accessed) transmitted from the AMF 20 Have. For example, when the UE 50 is accessing only the slice NS # 1 (see FIG. 1), the situation where the slice NS # 1 is being accessed even if the area TAI # 1 is moved to the area TAI # 2 is There is no need to change it. On the other hand, when the UE 50 is also accessing the slice NS # 2, the access change from the slice NS # 2 to the slice NS # 3 is changed in response to the movement from the area TAI # 1 to the area TAI # 2. It is necessary to request to AMF 20 of the side.
  • connection destination change necessity determination unit 51 sends an AMF 20 to the AMF 20 based on the information (Allowed NSSAI) for each area related to the slice to be accessed held in the connection information storage unit 53 described later and the area where the own terminal exists. To determine whether it is necessary to change the access to the slice.
  • the connection processing unit 52 has a function of performing processing relating to the change of the slice to be accessed, etc., when the change of the slice to be accessed is required based on the determination result in the connection destination change necessity determination unit 51. In addition, it has a function of performing processing related to slice access (processing related to establishing a new communication path) when newly registering a position.
  • the connection information holding unit 53 has a function of holding information (Allowed NSSAI) for each area related to the slice to be transmitted, which is transmitted from the AMF 20. As described above, the AMF 20 also transmits information corresponding to an area different from the area where the UE 50 currently exists. Therefore, the connection information holding unit 53 holds the information, and when the UE 50 moves to another area, the information corresponding to the area is used.
  • a process related to transmission of information (Allowed NSSAI) for each area related to a slice accessed from the AMF 20 to the UE 50 when the UE 50 performs location registration will be described with reference to FIG. 5.
  • the UE 50 transmits a location registration request to the AMF via a regional area network (RAN) (Registration Request: S01).
  • the UE 50 requests the provision of an NSSAI for accessing a slice, together with information identifying the own terminal (Requested NSSAI).
  • the communication unit 21 of the AMF 20 transfers it to the UDM 30, and requests transmission of Subscribed S-NSSAI (UE subscription Request: S02).
  • the UDM 30 transmits Subscribed S-NSSAI as information related to a slice accessed by the UE 50 based on a request from the AMF 20 (UE subscription Response: S03).
  • an authentication process and the like relating to the location registration of the UE 50 are performed between the UE 50, the AMF 20, and the UDM 30 (Authentication and Authorization: S04).
  • the position of the UE 50 is determined based on the Subscribed S-NSSAI transmitted from the UDM 30 in the transmission information creation unit 22 and the information related to the S-NSSAI for each area held in the area correspondence information holding unit 23.
  • the information (Allowed NSSAI) for each area related to the slice to which the UE 50 accesses in the area to be and its neighboring area is created (S05: slice information creation step). The method of creating this Allowed NSSAI is as described above.
  • the Allowed NSSAI generated is transmitted from the communication unit 21 of the AMF 20 to the UE 50, and a notification indicating that the position registration has been completed is performed (Registration Accept: S06: slice information transmission step).
  • the Allowed NSSAI # 1 used in the area TAI # 1 and the Allowed NSSAI # 2 used in the area TAI # 2 are transmitted from the AMF 20 to the UE 50 to the UE 50.
  • the connection information holding unit 53 holds the acquired information. Thereby, creation of Allowed NSSAI for every area according to the position of UE50 by AMF20 and transmission to UE50 are completed.
  • a connection request for the slice is transmitted to the AMF 20 using the Allowed NSSAI corresponding to the area in which the own terminal is located. This enables the UE 50 to access the slice specified by Allowed NSSAI. Although the UE 50 receives a plurality of Allowed NSSAI, these pieces of information are held in the connection information holding unit 53 of the UE 50.
  • the UE 50 is located in the area TAI # 1 shown in FIG. 1 and secures a communication path (PDU session) with the slice NS # 1 and the slice NS # 2.
  • the UE 50 establishes a communication path with the slice NS # 1 via the RAN (PDU session with NS # 1: S11), and between the slice NS # 2 and the slice NS # 2 And a communication path is provided (PDU session with NS # 2: S12).
  • the UE 50 has moved from the area TAI # 1 to the area TAI # 2 (S13).
  • the movement of the UE 50 can be detected at the UE 50, for example, by a change in radio wave intensity in communication with the base station eNB.
  • the connection destination change necessity determination unit 51 of the UE 50 relates to the slice connection change accompanying the area change. It is determined whether transmission of a request is necessary (S14: Connection destination change necessity determination step).
  • connection destination change necessity determination unit 51 of the information stored in the connection information storage unit 53, Allowed NSSAI of the area before movement (here, area TAI # 1) and the area after movement
  • the Allowed NSSAI of the area TAI # 2 is compared with the Available NSSAI to check whether there is a change in the S-NSSAI included in the Allowed NSSAI.
  • comparing Allowed NSSAI # 1 with Allowed NSSAI # 2 S-NSSAI # 2 corresponding to slice NS # 2 is changed to S-NSSAI # 3 corresponding to slice NS # 3. It will be. Therefore, the connection destination change necessity determination unit 51 determines that the slice needs to be changed.
  • connection processing unit 52 performs processing related to slice change. Specifically, a request for establishment of a communication channel to slice NS # 3 and a request for release of a communication channel with slice NS # 2 are transmitted from UE 50 to AMF 20 (PDU session Request with NS # 3 (S -NSSAI # 3) And Release PDU session Request with NS # 2: S15: Connection destination change processing step). The AMF 20 performs processing for releasing the communication path with the slice NS # 2 based on the request from the UE 50 (Release PDU session Request / Response: S16).
  • the AMF 20 also performs processing related to establishing a communication path with the slice NS # 3 based on a request from the UE 50 (PDU session Establish Request / Response: S17). Note that the order of the processes (S16, S17) related to the opening and establishment of the communication path can be changed. Thereafter, the AMF 20 notifies the UE 50 that the establishment of the communication path to the slice NS # 3 has been completed (PDU session Accept with NS # 3: S18: Connection destination change processing step). As a result, the UE 50 continues to maintain the communication path (PDU session with NS # 1: S11 ') established with the slice NS # 1 via the RAN and newly with the slice NS # 3. A communication path is established between them (PDU session with NS # 3: S19). As a result, in the area TAI # 2, the UE 50 can use the same service as the slice NS # 2 access by accessing the slice NS # 3.
  • FIG. 6 shows the case where the UE 50 has moved from the area TAI # 1 to the area TAI # 2 for which the Allowed NSSAI has already been acquired, depending on the movement destination of the UE 50, it can be used in the movement destination area There are cases where the UE 50 does not hold the Allowed NSSAI. In that case, the UE 50 requests the AMF 20 to transmit NSSAI, as in the process shown in FIG. Thereby, the UE 50 can acquire NSSAI (Allowed NSSAI), and access to the slice becomes possible.
  • NSSAI Allowed NSSAI
  • the communication control method is the communication control method by the communication control apparatus that controls the access of the communication terminal to the slice which is a virtual network generated on the network infrastructure, and the communication connection to the slice is Based on the information on the position information acquisition step of acquiring information on the current position of the requesting communication terminal, and the information on the current position of the communication terminal acquired in the position information acquisition step, on the slice accessible to the communication terminal at the position It has a slice information creation step of creating information, and a slice information transmission step of sending information related to a slice accessible by the communication terminal created in the slice information creation step to the communication terminal.
  • the information on the slice accessible to the communication terminal at the position is created based on the information on the current position of the communication terminal, and is transmitted to the communication terminal. Therefore, when the position of the communication terminal is changed, it is possible to provide information related to slices that can be accessed by the communication terminal according to the position of the communication terminal. Therefore, it is possible to change the slice accessed by the communication terminal according to the position of the communication terminal.
  • the information related to the current position of the communication terminal is information for specifying the area where the communication terminal is located, and in the slice information creation step, according to the area where the communication terminal is located, a slice accessible to the communication terminal It can be an aspect of creating such information.
  • the information related to the current position of the communication terminal is the information specifying the area where the communication terminal is located, and the information related to the slice accessible to the communication terminal is created according to the area where the communication terminal is located
  • the core network side including the communication control device it becomes possible to perform management related to the slice to which the communication terminal accesses for each service area, and the communication terminal in a state where the increase of the data amount is suppressed to some extent. It is possible to change the slice to be accessed by the communication terminal according to the position of.
  • the slice information creation step information on a slice accessible to the communication terminal at the current position of the communication terminal, information on a slice accessible to the communication terminal at the movement destination when the communication terminal moves from the current position
  • the slice information transmission step information on a slice accessible to the communication terminal at the current position of the communication terminal and information on a slice accessible to the communication terminal at the movement destination are transmitted to the communication terminal Can be used.
  • information on a slice to which the communication terminal can access at the current position of the communication terminal and information on a slice to which the communication terminal can access at the movement destination when the communication terminal moves from the current position Information related to slices that can be accessed by the communication terminal, which is performed between the communication terminal and the communication control device as the communication terminal moves, by creating a mode by the communication control device and transmitting to the communication terminal Communication related to transmission and reception of Also, on the communication terminal side, it is possible to perform processing related to slice change without performing communication for newly acquiring information on a slice accessible to the communication terminal from the communication control apparatus.
  • connection destination changing method is a connection destination changing method by a communication terminal that accesses a slice that is a virtual network generated on a network infrastructure, and the communication terminal is transmitted from the communication control apparatus It is necessary to access a specific slice based on the information related to the slice that can be accessed at the current position, and using the movement of the own terminal as a trigger to determine whether or not the slice to be accessed needs changing. And a connection destination change processing step of performing processing related to changing the slice to be accessed when it is determined in the connection destination change necessity determination step that change of the slice to be accessed is necessary.
  • the communication terminal uses the movement of the own terminal as a trigger to determine whether it is necessary to change the slice to be accessed based on the information related to the slice accessible at the current position. Based on the processing for changing the slice to be accessed is performed. As described above, the communication terminal recognizes that the information related to the accessible slice is the information corresponding to the position of the communication terminal, and determines whether to change the slice to be accessed as the own terminal moves. The slice to be accessed is changed as necessary. Therefore, it is possible to change the slice accessed by the communication terminal according to the position of the communication terminal.
  • the information related to the slice accessible at the current position is the information created corresponding to the area where the communication terminal is located, and the connection destination change necessity determination step changes the area where the own terminal is located It can be an aspect started with the
  • the information related to the current position of the communication terminal is the information for specifying the area where the communication terminal is located, and the communication terminal determines the necessity of the connection destination change triggered by the change of the area.
  • the communication terminal determines the necessity of the connection destination change triggered by the change of the area.
  • the communication terminal holds information related to a slice that can be accessed by the communication terminal at the current position of the communication terminal, which is transmitted from the communication control device, and information related to a slice that can be accessed by the communication terminal at the movement destination.
  • access is made by comparing information on a slice accessible to the communication terminal at the current position of the communication terminal with information on a slice accessible to the communication terminal at the movement destination. If it is determined in the connection destination change necessity determination step that the slice to be accessed needs to be changed, it is determined in the connection destination change processing step at the current position of the communication terminal.
  • Information related to slices accessible to the communication terminal, and slices accessible to the communication terminal at the movement destination It can be a mode for performing a process related to the change of the slice to be accessed by using the information, the difference.
  • information on a slice to which the communication terminal can access at the current position of the communication terminal and information on a slice to which the communication terminal can access at the movement destination when the communication terminal moves from the current position
  • the communication terminal and communication control are performed along with the movement of the communication terminal by holding the communication terminal in the connection destination change processing step and performing processing related to changing the slice to be accessed using the difference between the information. It is possible to reduce communication related to transmission and reception of information related to slices that can be accessed by a communication terminal performed with a device. Also, on the communication terminal side, it is possible to perform processing related to slice change without performing communication for newly acquiring information on a slice accessible to the communication terminal from the communication control apparatus.
  • the present invention is not limited to the above-mentioned embodiment.
  • the AMF 20 and the other devices may be realized by combining a plurality of devices.
  • Information relating to accessible slices is information that indicates which position is usable information, and is associated with each Allowed NSSAI. Therefore, the information specifying the usable position (area) may be associated with Allowed NSSAI, and the size and size of the area can be changed as appropriate.
  • each functional block is not particularly limited. That is, each functional block may be realized by one physically and / or logically coupled device, or directly and / or indirectly two or more physically and / or logically separated devices. It may be connected by (for example, wired and / or wireless) and realized by the plurality of devices.
  • the AMF 20 as a communication control apparatus and the UE 50 as a communication terminal in one embodiment of the present invention may function as a computer that performs the processing described in the above embodiment.
  • FIG. 7 is a diagram showing an example of the hardware configuration of the AMF 20 and the UE 50 according to an embodiment of the present invention.
  • the above-described AMF 20 and UE 50 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007 and the like.
  • the term “device” can be read as a circuit, a device, a unit, or the like.
  • the hardware configuration of the AMF 20 and the UE 50 may be configured to include one or more of the devices illustrated in the figure, or may be configured without including some devices.
  • Each function in the AMF 20 and the UE 50 causes the processor 1001 to perform an operation by reading predetermined software (program) on hardware such as the processor 1001, the memory 1002, and the communication by the communication device 1004, the memory 1002, and the storage 1003. This is realized by controlling the reading and / or writing of data in
  • the processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.
  • CPU Central Processing Unit
  • the communication unit 21 of the AMF 20 described above may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module or data from the storage 1003 and / or the communication device 1004 to the memory 1002, and executes various processing according to these.
  • a program a program that causes a computer to execute at least a part of the operations described in the above embodiments is used.
  • the transmission information creation unit 22 or the like of the AMF 20 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, or may be realized similarly for other functional blocks.
  • the various processes described above have been described to be executed by one processor 1001, but may be executed simultaneously or sequentially by two or more processors 1001.
  • the processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the memory 1002 is a computer readable recording medium, and includes, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). It may be done.
  • the memory 1002 may be called a register, a cache, a main memory (main storage device) or the like.
  • the memory 1002 can store a program (program code), a software module, etc. that can be executed to implement the method according to one embodiment of the present invention.
  • the storage 1003 is a computer readable recording medium, and for example, an optical disc such as a CD-ROM (Compact Disc ROM), a hard disc drive, a flexible disc, a magneto-optical disc (eg, a compact disc, a digital versatile disc, a Blu-ray A (registered trademark) disk, a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like may be used.
  • the storage 1003 may be called an auxiliary storage device.
  • the above-mentioned storage medium may be, for example, a database including the memory 1002 and / or the storage 1003, a server or any other suitable medium.
  • the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication unit 21 of the AMF 20 described above may be realized by the communication device 1004.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside.
  • the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • bus 1007 for communicating information.
  • the bus 1007 may be configured by a single bus or may be configured by different buses among the devices.
  • the AMF 20 and the UE 50 respectively include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). It may be configured to include, and part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented in at least one of these hardware.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • notification of information is not limited to the aspects / embodiments described herein, and may be performed in other manners.
  • notification of information may be physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
  • Each aspect / embodiment described in the present specification is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA (Registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-Wide Band),
  • the present invention may be applied to a system utilizing Bluetooth (registered trademark), other appropriate systems, and / or an advanced next-generation system based on these.
  • the specific operation that is supposed to be performed by the base station in this specification may be performed by its upper node in some cases.
  • the various operations performed for communication with the terminals may be the base station and / or other network nodes other than the base station (eg, It is clear that it may be performed by MME or S-GW etc but not limited to these).
  • MME Mobility Management Entity
  • S-GW Serving Mobility Management Entity
  • Information and the like may be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input and output may be performed via a plurality of network nodes.
  • the input / output information or the like may be stored in a specific place (for example, a memory) or may be managed by a management table. Information to be input or output may be overwritten, updated or added. The output information etc. may be deleted. The input information or the like may be transmitted to another device.
  • the determination may be performed by a value (0 or 1) represented by one bit, may be performed by a boolean value (Boolean: true or false), or may be compared with a numerical value (for example, a predetermined value). Comparison with the value).
  • notification of predetermined information is not limited to what is explicitly performed, but is performed by implicit (for example, not notifying of the predetermined information) It is also good.
  • Software may be called software, firmware, middleware, microcode, hardware description language, or any other name, and may be instructions, instruction sets, codes, code segments, program codes, programs, subprograms, software modules. Should be interpreted broadly to mean applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc.
  • software, instructions, etc. may be sent and received via a transmission medium.
  • software may use a wireline technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or a website, server or other using wireless technology such as infrared, radio and microwave When transmitted from a remote source, these wired and / or wireless technologies are included within the definition of transmission medium.
  • wireline technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or a website, server or other using wireless technology such as infrared, radio and microwave
  • data, instructions, commands, information, signals, bits, symbols, chips etc may be voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any of these May be represented by a combination of
  • the channels and / or symbols may be signals.
  • the signal may be a message.
  • the component carrier (CC) may be called a carrier frequency, a cell or the like.
  • system and "network” as used herein are used interchangeably.
  • radio resources may be indexed.
  • a base station can accommodate one or more (e.g., three) cells (also called sectors). If the base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small base station RRH for indoor use: Remote Communication service can also be provided by Radio Head.
  • the terms “cell” or “sector” refer to a part or all of the coverage area of a base station and / or a base station subsystem serving communication services in this coverage.
  • base station “eNB”, “cell” and “sector” may be used interchangeably herein.
  • a base station may also be called in terms of a fixed station (Node station), NodeB, eNodeB (eNB), access point (access point), femtocell, small cell, and so on.
  • the mobile station may be a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, by those skilled in the art. It may also be called a terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.
  • determining may encompass a wide variety of operations.
  • “Judgment”, “decision” are, for example, judging, calculating, calculating, processing, processing, deriving, investigating, looking up (for example, a table) (Searching in a database or another data structure), ascertaining may be regarded as “decision”, “decision”, etc.
  • “determination” and “determination” are receiving (e.g. receiving information), transmitting (e.g. transmitting information), input (input), output (output), access (accessing) (for example, accessing data in a memory) may be regarded as “judged” or “decided”.
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements that are “connected” or “coupled”.
  • the coupling or connection between elements may be physical, logical or a combination thereof.
  • the two elements are by using one or more wires, cables and / or printed electrical connections, and radio frequency as some non-limiting and non-exclusive examples. It can be considered “connected” or “coupled” to one another by using electromagnetic energy such as electromagnetic energy having wavelengths in the region, microwave region and light (both visible and invisible) regions.
  • the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to an element using the designation "first,” “second,” etc. as used herein does not generally limit the quantity or order of those elements. These designations may be used herein as a convenient way of distinguishing between two or more elements. Thus, reference to the first and second elements does not mean that only two elements can be taken there, or that in any way the first element must precede the second element.
  • each device described above may be replaced with a “unit”, a “circuit”, a “device” or the like.

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

Abstract

L'invention concerne un procédé de commande de communication qui est exécuté par un dispositif de commande de communication qui commande l'accès par un terminal de communication à une tranche qui est un réseau virtuel qui est produit sur une infrastructure de réseau. Le procédé de commande de communication comprend : une étape d'acquisition d'informations d'emplacement permettant d'acquérir des informations concernant l'emplacement actuel d'un terminal de communication qui demande une connexion de communication à une tranche ; une étape de création d'informations de tranche permettant de créer, en fonction des informations acquises dans l'étape d'acquisition d'informations d'emplacement concernant l'emplacement actuel du terminal de communication, des informations concernant des tranches auxquelles le terminal de communication peut accéder audit emplacement ; et une étape de transmission d'informations de tranche permettant de transmettre au terminal de communication les informations créées dans l'étape de création d'informations de tranche concernant les tranches auxquelles le terminal de communication peut accéder.
PCT/JP2018/038529 2017-10-16 2018-10-16 Procédé de commande de communication et procédé de changement de cible de connexion Ceased WO2019078212A1 (fr)

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JP2017200403A JP2021016014A (ja) 2017-10-16 2017-10-16 通信制御方法及び接続先変更方法

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CN115967997A (zh) * 2021-10-11 2023-04-14 中国移动通信有限公司研究院 信息处理方法、装置、设备及可读存储介质
EP4461003A4 (fr) * 2022-01-05 2025-11-19 Nokia Technologies Oy Procédé et appareil de segmentation de réseau

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