WO2018003954A1 - 通信システム及び通信方法 - Google Patents

通信システム及び通信方法 Download PDF

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Publication number
WO2018003954A1
WO2018003954A1 PCT/JP2017/024061 JP2017024061W WO2018003954A1 WO 2018003954 A1 WO2018003954 A1 WO 2018003954A1 JP 2017024061 W JP2017024061 W JP 2017024061W WO 2018003954 A1 WO2018003954 A1 WO 2018003954A1
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WO
WIPO (PCT)
Prior art keywords
network
gateway
plane
communication system
wireless terminal
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/JP2017/024061
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English (en)
French (fr)
Japanese (ja)
Inventor
大地 舩渡
健太 安川
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.)
Soracom Inc
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Soracom Inc
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 Soracom Inc filed Critical Soracom Inc
Priority to EP23164990.6A priority Critical patent/EP4221444B1/en
Priority to EP17820308.9A priority patent/EP3481134B1/en
Priority to CN201780053415.7A priority patent/CN109716804B/zh
Priority to SG11201900758UA priority patent/SG11201900758UA/en
Priority to CN202210276888.6A priority patent/CN114500608B/zh
Priority to US16/313,792 priority patent/US11197234B2/en
Publication of WO2018003954A1 publication Critical patent/WO2018003954A1/ja
Anticipated expiration legal-status Critical
Priority to US17/513,397 priority patent/US11765644B2/en
Priority to US18/232,479 priority patent/US12143923B2/en
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y10/00—Economic sectors
    • G16Y10/75—Information technology; Communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/20—Communication route or path selection, e.g. power-based or shortest path routing based on geographic position or location
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/12—Mobility data transfer between location registers or mobility servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/24—Interfaces between hierarchically similar devices between backbone network devices

Definitions

  • the present invention relates to a communication system and a communication method.
  • IoT devices networked devices
  • IoT devices connected via cellular networks are exported across national borders.
  • SIM cards contracted with European mobile operators (MNOs) or carriers are located in European factories. It can be inserted into a product and imported into Japan.
  • MNOs European mobile operators
  • the SIM card When this IoT device tries to access a computer network in Japan, the SIM card is assigned an identification number such as IMSI or ICCID, and the information for identifying the European carrier that is the home location is the identification. Since it is associated with the number, the connection start request to the computer network is transferred to the European carrier via a Japanese carrier that is in an interconnection relationship with the European carrier.
  • the wireless terminal 100 with the SIM card contracted with the European carrier 110 is located in the Japanese carrier 120 and starts to access the IP network 130
  • the wireless terminal 100 is connected to a gateway (SGSN in 3G, S-GW in LTE) (hereinafter referred to as “visiting gateway”) installed in the core network of the Japanese carrier 120 through a wireless base station that is an entry point of the Japanese carrier 120.
  • a connection start request including IMSI is transmitted to “Matsumori” (also referred to as “vising carrier gateway”).
  • the visiting gateway When the visiting gateway that has received the connection start request determines that the identification number is associated with the European carrier 110 other than the Japanese carrier 120, the visiting gateway includes information on the SIM card inserted into the European carrier 110 and the wireless terminal 100, etc. Based on the APN (Access Point Name) received from the wireless terminal 100, the DNS is referred to and an IP address corresponding to the APN is acquired.
  • the IP address indicates the gateway (the GGSN in 3G, the P-GW in LTE) (hereinafter also referred to as “home gateway” or “home carrier gateway”) that is the endpoint of the core network of the European carrier 110.
  • the visiting gateway transmits or forwards the connection start request to the home gateway via the C plane of the tunneling protocol such as GTP through the network for providing inter-carrier interconnection such as GRX,
  • a tunnel is formed between the visiting gateway of the Japanese carrier 120 and the home gateway of the European carrier 110.
  • Communication of the wireless terminal 100 is transferred from the Japanese carrier 120 to the European carrier 110 through the tunnel, and transferred from the European carrier 110 to an external IP network or the like.
  • the present invention has been made in view of such problems.
  • the first object of the present invention is to provide an identification number (directly or indirectly) for accessing a first network (for example, a European carrier). )
  • a first network for example, a European carrier
  • a second network for example, a Japanese carrier
  • a second object of the present invention is to provide a wireless terminal storing an identification number for accessing a first network (for example, a European carrier) for providing access to the network via itself. It is to provide a network (for example, a Japanese carrier) or a communication method capable of suppressing delay.
  • a first network for example, a European carrier
  • a network for example, a Japanese carrier
  • a communication method capable of suppressing delay.
  • the first aspect of the present invention provides access to a network via a second network to a wireless terminal in which an identification number for accessing the first network is stored.
  • a receiving unit that receives a connection start request on a C plane from the wireless terminal, and based on the network ID of the second network acquired according to the connection start request,
  • a selection unit that selects a gateway on the U plane to the network connected to the second network, and a transmission unit that transmits a gateway ID of the selected gateway on the U plane toward the second network It is characterized by providing.
  • the acquisition is performed by receiving the network ID of the second network.
  • the third aspect of the present invention is characterized in that, in the second aspect, the network ID is MCC and MNC.
  • the fourth aspect of the present invention is characterized in that, in the second aspect, the network ID is an IP address that is a destination of a U plane included in signaling from the second network.
  • the acquisition is performed with reference to a visited network table stored in the HLR / HSS based on the identification number. .
  • the gateway on the U plane is based on the distance from the network having the network ID based on the network ID. It is selected.
  • the seventh aspect of the present invention is characterized in that, in the sixth aspect, the distance is a distance on a network.
  • the distance is a geographical distance.
  • a ninth aspect of the present invention is the information processing apparatus according to any one of the sixth to eighth aspects, wherein the gateway on the U plane is associated with a network having a plurality of network IDs and network IDs. It is characterized by being selected with reference to a gateway table holding a correspondence with a gateway on the U plane.
  • the gateway on the U plane is selected based on the network ID and the identification number.
  • the gateway on the U plane is selected based on only the identification number.
  • the twelfth aspect of the present invention is characterized in that, in any of the first to eleventh aspects, the gateway on the U-plane is configured by one or a plurality of instances on the cloud.
  • a thirteenth aspect of the present invention is that, in the twelfth aspect, the gateway on the U plane has a function on the C plane when the wireless terminal accesses the network via the second network. It is characterized by not exhibiting.
  • the fourteenth aspect of the present invention is characterized in that, in any one of the first to thirteenth aspects, the fourteenth aspect is configured by one or a plurality of instances on the cloud.
  • a fifteenth aspect of the present invention provides the wireless terminal according to any one of the first to fourteenth aspects, wherein the wireless terminal is provided with access to the network via the second network. It is characterized by not functioning.
  • the first network is a first MNO network
  • the second network is the first network.
  • the second MNO network is different from the MNO.
  • one or a plurality of identification numbers are stored directly or indirectly in the wireless terminal, and the wireless terminal transmits a connection start request.
  • the identification number sometimes used is for accessing the first network.
  • an eighteenth aspect of the present invention is characterized in that, in the sixteenth or seventeenth aspect, the identification number is IMSI.
  • the nineteenth aspect of the present invention is characterized in that, in any of the sixteenth to eighteenth aspects, the first network and the second network are interconnected.
  • the twentieth aspect of the present invention is characterized in that, in any of the sixteenth to nineteenth aspects, the twentieth aspect is connected to the first network via an interconnection system.
  • the transmission unit transmits a tunnel endpoint generation request to the selected gateway on the U plane. It is characterized by that.
  • a communication system for providing access to a network via a visiting gateway to a wireless terminal in which an identification number for accessing a home gateway is stored.
  • a receiving unit that receives a connection start request on the C plane from the wireless terminal, and is connected to the visiting gateway based on the acquired network ID of the visiting gateway according to the connection start request
  • a selection unit that selects a gateway on the U plane to the network, and a transmission unit that transmits a gateway ID of the selected gateway on the U plane to the visiting gateway.
  • a communication method for providing access to a network via a second network to a wireless terminal storing an identification number for accessing the first network Receiving a connection start request on the C plane from the wireless terminal, and connected to the second network based on the acquired network ID of the second network in response to the connection start request Selecting a gateway on the U-plane to the network and transmitting a gateway ID of the selected gateway on the U-plane toward the second network.
  • a communication method for providing access to a network via a second network to a wireless terminal in which an identification number for accessing the first network is stored in a computer includes a step of receiving a connection start request on the C plane from the wireless terminal, and a network of the second network acquired in response to the connection start request Based on the ID, selecting a gateway on the U plane to the network connected to the second network, and directing the gateway ID of the selected gateway on the U plane to the second network And transmitting.
  • a communication with a communication system for providing access to a network via a second network to a wireless terminal in which an identification number for accessing the first network is stored.
  • a second network that performs a connection start request and an APN on the C plane from the wireless terminal, and the communication system indicated by an IP address determined by DNS based on the APN.
  • a transmission unit that transmits the connection start request, and is connected to the second network selected based on a network ID of the second network in response to the connection start request in the communication system.
  • the gateway ID of the gateway on the U plane to the network is received, and the U play indicated by the gateway ID is received. And establishes a communication path between the upper gateway.
  • a communication system for providing access to a network through a second network to a wireless terminal in which an identification number for accessing the first network is stored in a computer.
  • a communication method for performing communication with the wireless terminal wherein the communication method receives a connection start request and an APN on the C plane from the wireless terminal, and is determined by DNS based on the APN.
  • the gateway ID of the gateway on the U plane to the network connected to the second network
  • the gateway on the U plane connected to the visiting gateway is selected, and the communication path between the two is selected.
  • 1 is a diagram illustrating a communication network including a communication system according to an aspect of the present invention. It is a figure which shows the flow of the signal in the communication network in 1 aspect of this invention. It is a figure which shows the detail of the communication system in 1 aspect of this invention.
  • FIG. 2 illustrates a communication network including a communication system according to one embodiment of the present invention.
  • the first network 210 is a European carrier network whose service area is a predetermined region in Europe
  • the second network 220 is a Japanese carrier network whose service area is a predetermined region in Japan. Will be described as an example. It is assumed that the SIM card inserted into the wireless terminal 100 is contracted with a European carrier as in FIG. 1 and holds an identification number for accessing the European carrier.
  • two or more IMSIs can be stored in the SIM card inserted into the wireless terminal 100, and not only stored in the physical SIM card of the wireless terminal 100 but also wirelessly.
  • One or a plurality of IMSIs are stored on a semiconductor chip (also referred to as “eSIM”) incorporated in the terminal 100, software is installed in a secure area in the module of the wireless terminal 100, and 1 or A plurality of IMSIs can be stored, and various modes are conceivable in which the wireless terminal 100 holds the identification number directly or indirectly.
  • SIM semiconductor chip
  • the communication system 200A is connected to the first network 210 directly or via an inter-carrier interconnection network such as GRX.
  • a communication system 200A for providing a wireless communication service to an end user using the wireless communication infrastructure for the first network 210 that is an MNO is a part of the network of a virtual mobile communication operator (MVNO).
  • the wireless terminal 100 that requests access to the network 130 such as an IP network selects the third network 200B for forming a tunnel from the plurality of networks.
  • Such a configuration can be said to be possible only when the same operator attempts to operate the communication system 200A and the third network 200B across borders, and is a new idea that has not been achieved in the past.
  • the communication system 200A is a separate network from the first network 210.
  • the spirit of the present invention is, for example, the communication system 200A as a part of the first network. It is added that even if it is constructed on the same network as the first network, it can be applied.
  • the wireless terminal 100 transmits a connection start request to the second network 220 in order to access the computer network 130 (S301).
  • the second network 220 that has received the connection start request determines whether the carrier associated with the identification number is the second network 220 based on an identification number such as IMSI included in the connection start request. If the second network 220 is not the second network 220, that is, if the second network 220 is a visiting gateway for the wireless terminal 100, the presence / absence of a contract between the first network 110 and the wireless terminal 100 (SIM card inserted into the first network 110) After performing such authentication, an inquiry is made to the DNS that holds the correspondence between the APN and the IP address of the gateway based on the APN received from the wireless terminal 100 (S302). Based on the received APN, the DNS transmits the IP address of the access destination server corresponding to the APN to the second network 220 (S303).
  • DNS can be a part of the communication system 200A, and can also be placed at a location accessible from the communication system 200A or the second network 220.
  • a single IP address does not necessarily correspond to each APN, but a plurality of IP addresses are associated with each other, and when an APN is received, allocation is performed in a round-robin manner, or an identification number such as IMSI is assigned. It is possible to select according to.
  • the network ID identifying the visiting gateway of the second network 220 or the second network 220 such as MCC (mobile country code), MNC (mobile network code), IP address, etc. is received in the DNS, and the network It is also possible to select according to the ID.
  • the second network 220 specified by the network ID or the closest one based on the distance on the network or the geographical distance from the visiting gateway of the second network 220. Is possible. When there are a plurality of ones having the same distance, one of them may be selected at random.
  • connection start request in this specification, “connection start request” to the communication system 200A or the server in the communication system 200A indicated by the IP address corresponding to the APN.
  • connection start request Including a request transmitted by the second network 220 that substantially corresponds to the connection start request received by the second network 220.) or an identification number included in the connection start request, and a second A network ID for identifying the network 220 is transmitted (S304).
  • the ID of the gateway of the second network 220 such as MCC (mobile country code), MNC (mobile network code), and IP address can be used as the network ID.
  • the signaling on the C plane transmitted from the second network 220 includes the IP address of the visiting gateway of the second network 220 or the second network 220 as the destination of the U plane, and this is the network ID. Can be used.
  • the second network 220 further provides auxiliary information for assisting the wireless terminal 100 to select a gateway for establishing a connection or the third network 200B including the gateway in the communication system 200A. You may transmit with respect to 200A.
  • a gateway table that holds a correspondence between a network ID and a gateway on an associated U plane of the network having the network ID is stored, and the wireless terminal 100 is based on the received network ID.
  • the communication system 200A also requests the selected third network 200B or its gateway to generate a tunnel endpoint (TE) ID as necessary. (S305).
  • TE tunnel endpoint
  • the communication system 200A receives the tunnel endpoint ID (TEID) from the third network 200B (S306) and transmits it to the second network 220 together with the gateway ID (S307).
  • the gateway ID is, for example, the IP address of the gateway on the selected U plane.
  • the gateway of the third network 200B has two or more servers that can be connected to the second network 220, any one of them is selected as the gateway ID.
  • the second network 220 forms a tunnel between the visiting gateway of the second network 220 and the gateway of the third network 200B indicated by the gateway ID (S308). .
  • the wireless terminal 100 can perform U-plane tunneling with the gateway of the third network 200B associated with the second network 220, and can shorten the home location, thereby significantly improving the delay. Is done.
  • examples of the access destination network by the wireless terminal 100 include non-IP networks as well as IP networks such as the Internet.
  • the private system when realizing at least a part of the third network 200B on the cloud, the private system includes a different IP network on the same cloud or an IP network on a different cloud, etc.
  • the network 200B and these private systems can be connected by a dedicated line or a virtual dedicated line.
  • FIG. 4 shows details of a server included in the communication system according to one embodiment of the present invention.
  • Each of the one or more servers 400 included in the communication system 200 ⁇ / b> A includes a communication unit 401 such as a communication interface that receives a connection start request on the C plane from the wireless terminal 100, and a second acquired according to the connection start request.
  • a CPU that selects a gateway to the computer network 130 connected to the second network 220 by referring to the gateway table stored in the storage unit 402 such as a memory or a hard disk based on the network ID of the network 220.
  • a server including the processing unit 403 may be used.
  • the communication unit 401 transmits the gateway ID of the selected gateway toward the second network 220. If the communication unit 401 receives the ID of the tunnel endpoint generated by the selected gateway, the communication unit 401 also transmits it to the second network 220.
  • the server is not limited to a physically single server, and may be a plurality of accessible servers, and the storage unit 402 may be a storage device accessible from the server on a computer network.
  • the operation in one or both of the communication unit 401 and the processing unit 403 can be realized by executing one or a plurality of programs for causing the computer to perform the operation.
  • the server 400 can be an instance on a public cloud or a private cloud.
  • cloud refers to a system that can dynamically provision and provide computing resources such as CPU, memory, storage, and network bandwidth according to demand on the network.
  • the cloud can be used by AWS or the like.
  • the communication system 200A provides the wireless terminal 100 with access to the network 130 via the second network 220, and performs the function on the C plane at the start of connection, but does not perform the function on the U plane. can do.
  • the function on the U plane can be performed in the third network 200B having a service area outside or outside the service area of one or both of the first network 210 and the communication system 200A, such as outside the country.
  • the third network 200B is outside the service area or outside the service area of the communication system 200A, it does not necessarily mean outside the country.
  • the third network 200B performs a function on the U plane in providing the wireless terminal 100 with access to the computer network 130 via the second network 220, but does not perform a function on the C plane. be able to.
  • the gateway table that can be held or accessed by the communication system 200A defines a correspondence relationship between a network ID and a gateway or server associated with the network having the network ID or a network including the gateway.
  • the gateway table may be a network having a network ID (that is, the second network 220) or a vicinity of the gateway among the networks scattered in various places or the gateway with respect to the network ID such as an IP address. It defines a correspondence relationship with one or a plurality of located gateways or a network including the gateways (that is, the third network 200B).
  • the “distance” to the gateway can be a distance on the network measured by the delay time. The distance on the network can be calculated by the number of hops, for example. Moreover, it can also be located in the vicinity in order from the shortest geographical distance.
  • a correspondence relationship between one network or a plurality of gateways outside the service area of the network having the network ID (that is, the second network 220) or a network including the network ID may be defined. it can.
  • a plurality of gateways or networks including the same may be associated with one network ID, and it is possible to determine which gateway corresponds to an identification number such as IMSI included in the connection start request. .
  • an identification number such as IMSI included in the connection start request.
  • it can be associated with a gateway that can use a specific service on the U plane or a network including the same, and as an example, only by the identification number, A gateway on the U plane can be selected.
  • the metrics of the processing capabilities of the plurality of U-plane gateways associated with the second network 220 are monitored, and the gateway with the lower processing load is selected. Also good. Examples of metrics to be monitored include CPU load, memory utilization, disk read, disk write, network traffic reception, network traffic transmission, and the like.
  • One or more servers included in each gateway associated with the second network 220 may be an instance on a public cloud or a private cloud. In selecting a gateway on the U plane based on the distance described above, it is also beneficial to finally select a gateway having a lower processing load when there are a plurality of equivalent gateways.
  • the communication system 200A may receive the auxiliary information from the second network 220.
  • the connection destination gateway or the third network 200B including the gateway is selected on the basis of each server, and the distance between the second network 220 and the third network 200B is determined. The shortest combination may be selected. It can also be understood that the IP address of each server is positioned as a network ID, and a plurality of network IDs are received by the communication system 200A.
  • the MCC mobile country code
  • MNC mobile network code
  • the IP address that is the destination of the U plane included in the signaling on the C plane, and the like are exemplified.
  • the visiting network as the visited network of the wireless terminal 100 or the second network 220 including the visiting gateway
  • the HLR / HSS or the subscriber information management database stores a visited network table that holds the visited network in which each wireless terminal exists.
  • the MCC mobile country ID
  • network ID such as MNC (mobile network code)
  • the second network 220 includes one or a plurality of servers.
  • Each server includes a communication unit such as a communication interface, a storage unit such as a memory and a hard disk, and a processing unit such as a CPU.
  • the data transmission and / or reception described above is performed by the communication unit, and necessary processing is performed by the processing unit.
  • the storage unit may be a storage device that can be accessed on the computer network from the server, and the operation in one or both of the communication unit and the processing unit is one or more programs for causing the computer to perform the operation. It can be realized by executing.
  • one or more servers included in the second network 220 can be instances on a public cloud or a private cloud.

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PCT/JP2017/024061 2016-07-01 2017-06-29 通信システム及び通信方法 Ceased WO2018003954A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP23164990.6A EP4221444B1 (en) 2016-07-01 2017-06-29 SECOND NETWORK, COMMUNICATION METHOD AND PROGRAM
EP17820308.9A EP3481134B1 (en) 2016-07-01 2017-06-29 Communication system, communication method and program
CN201780053415.7A CN109716804B (zh) 2016-07-01 2017-06-29 通信系统及通信方法
SG11201900758UA SG11201900758UA (en) 2016-07-01 2017-06-29 Communication system and communication method
CN202210276888.6A CN114500608B (zh) 2016-07-01 2017-06-29 通信系统及通信方法
US16/313,792 US11197234B2 (en) 2016-07-01 2017-06-29 Communication system and communication method
US17/513,397 US11765644B2 (en) 2016-07-01 2021-10-28 Communication system and communication method
US18/232,479 US12143923B2 (en) 2016-07-01 2023-08-10 Communication system and communication method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016131597A JP6719996B2 (ja) 2016-07-01 2016-07-01 通信システム及び通信方法
JP2016-131597 2016-07-01

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US16/313,792 A-371-Of-International US11197234B2 (en) 2016-07-01 2017-06-29 Communication system and communication method
US17/513,397 Continuation US11765644B2 (en) 2016-07-01 2021-10-28 Communication system and communication method

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US (3) US11197234B2 (enExample)
EP (2) EP3481134B1 (enExample)
JP (1) JP6719996B2 (enExample)
CN (2) CN109716804B (enExample)
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US20200389837A1 (en) 2020-12-10
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US11197234B2 (en) 2021-12-07
US11765644B2 (en) 2023-09-19
CN114500608B (zh) 2024-01-02
EP3481134A4 (en) 2020-02-26
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