WO2020138790A2 - Système de dispositif à dispositif au moyen d'une petite cellule 5g et procédé associé - Google Patents

Système de dispositif à dispositif au moyen d'une petite cellule 5g et procédé associé Download PDF

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Publication number
WO2020138790A2
WO2020138790A2 PCT/KR2019/017716 KR2019017716W WO2020138790A2 WO 2020138790 A2 WO2020138790 A2 WO 2020138790A2 KR 2019017716 W KR2019017716 W KR 2019017716W WO 2020138790 A2 WO2020138790 A2 WO 2020138790A2
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WIPO (PCT)
Prior art keywords
small cell
user terminal
control unit
communication control
communication
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Ceased
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PCT/KR2019/017716
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English (en)
Korean (ko)
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WO2020138790A3 (fr
Inventor
전호인
박경현
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Onface Co ltd
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Onface Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/26Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/32Hierarchical cell structures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/12Access point controller devices

Definitions

  • the present invention relates to D-to-D communication using a 5G small cell
  • the user terminal (UE) located in the service area of the small cell uses the 5G communication method as it is, and the terminal to be called is located in the service area of the small cell.
  • a 5G communication network is used by connecting to DAS, and a calling terminal for D to D connection at the user terminal (UE)
  • It relates to a D-to-D system and method using a 5G small cell that provides a D to D connection between any terminal and a terminal located in the same 5G small cell without searching for.
  • Direct (device to device, D to D) communication between terminals means a method in which a terminal directly communicates with another terminal. For example, when D to D communication between the first terminal and the second terminal is performed, the first terminal may generate a message including data to be transmitted to the second terminal, and the generated message to the second terminal Can be sent directly. The second terminal may receive a message including data from the first terminal, and may acquire data included in the received message.
  • D2D (DEVICE-TO-DEVICE) signal transmission method performed by a terminal in the wireless communication system of Korean Patent No. 10-1921989 B1 shown in FIG. 1 as a background technology for D to D communication as described above and the There is a terminal technology using the method.
  • This technique relates to a method for transmitting a device-to-device (D2D) signal performed by a terminal in a wireless communication system and a terminal using the method, wherein the method displays information indicating whether mode 2 operation is allowed in an exceptional state.
  • D2D device-to-device
  • the terminal receives, determining whether or not in the exceptional state, and if it is determined that the exceptional state, the mode 2 operation is performed, the mode 2 operation, the terminal selects a specific resource from the resource pool, and the selected resource It characterized in that the operation to transmit the D2D signal using.
  • D2D discovery between cells in the LTE network of Korean Patent Application Publication No. 10-2018-0036804 A shown in FIG. 2.
  • This technique relates to a method of signaling for proximity service and D2D discovery in an enhanced Node B (eNB), user equipment (UE), and LTE network, where an eNB includes D2D resources configured by one or more neighboring cells.
  • D2D discovery between cells may be supported by transmitting signaling for indicating configuration information for the D2D discovery resource pool to the first user equipment (UE), and the configuration information is between the serving cell of the first UE and one or more neighboring cells. It is characterized by being configured to include a timing offset.
  • This technique relates to a method, apparatus, network node, and computer program product for transmitting D2D synchronization signals, wherein D2D synchronization signals are received from a first network node, and the hop number of D2D synchronization signals is wireless of D2D synchronization signals. It is determined based on resources, and whether to transmit D2D synchronization signals to the second network node is characterized in that it is configured to be determined based on the number of hops.
  • a user terminal (UE) located in a service area of a small cell uses a 5G communication method as it is, and provides a D to D connection when a terminal to be called is located in a service area of a small cell, and the terminal to be called is Provided is a D to D system using a 5G small cell and a method for using a 5G communication network by connecting to a DAS when not located in the service area of the small cell.
  • D to D system and method using the 5G small cell of the present invention D to D connection between any terminal and a terminal located in the same 5G small cell without searching for a calling terminal for D to D access in a user terminal (UE) It is an object to solve the problem of providing a D-to-D system and a method using a 5G small cell that provides.
  • a small cell having at least one small cell AP, and the backhaul network and mobile communication through the small cell APs through a distributed antenna system (DAS)
  • DAS distributed antenna system
  • a control unit is provided, and the D to D communication control unit collects AP information of a user terminal in the small cell and accesses a small cell AP, and receives information of a terminal called from a user terminal (UE) located in the small cell.
  • D to D connection of a user terminal (UE) and a calling terminal is performed, and when the called terminal is not located in a small cell, the user terminal ( UE) is connected to a distributed antenna system (DAS) to provide a D-to-D system using a 5G small cell, characterized in that configured to perform 5G communication as a solution to the problem.
  • DAS distributed antenna system
  • the user terminal (UE) located in the service area of the small cell uses the 5G communication method as it is and the terminal to be called is the service area of the small cell If it is located within, it provides D to D connection, and when the terminal to be called is not located in the service area of the small cell, it connects to DAS to use the 5G communication network, and the user terminal (UE) for D to D connection
  • DAS wireless fidelity
  • UE user terminal
  • 1 is a background technology for the present invention, a D2D (DEVICE-TO-DEVICE) signal transmission method performed by a terminal in a wireless communication system and a configuration of a terminal technology using the method
  • FIG. 2 is a configuration of a signaling technology for D2D discovery between cells in an LTE network as another background technology for the present invention.
  • 3 is a configuration of a method and apparatus for transmitting D2D synchronization signals as another background technique for the present invention.
  • Figure 5 is a connection relationship of small cells in a 5G mobile communication system
  • 6 is a basic configuration of a D-to-D system using the 5G small cell of the present invention.
  • FIG. 7 is a configuration of a small cell AP 100 in a D-to-D system using the 5G small cell of the present invention
  • Figure 8 is the configuration of the D to D communication control unit 200 in the D-to-D system using the 5G small cell of the present invention
  • 9 is a driving method of performing a D to D connection when a user terminal (UE) in a small cell calls another user terminal located in the same small cell.
  • 10 is a driving method of performing an external 5G connection when a user terminal (UE) in a small cell calls another user terminal not located in the same small cell.
  • UE user terminal
  • the present invention a small cell having at least one small cell AP, and the small cell AP through a distributed antenna system (DAS: Distributed Antenna Systems) backhaul (backhaul) network and mobile switching centers (MSC: mobile switching centers)
  • DAS Distributed Antenna Systems
  • backhaul backhaul
  • MSC mobile switching centers
  • D-to-D system using a 5G small cell connected to a macro cell base station or a core network through a D to D communication control unit is provided between the small cell AP and the distributed antenna system, and the D to D communication is performed.
  • control unit collects user terminal and access small cell AP information in the small cell and receives information of a terminal called from a user terminal (UE) located in the small cell, when the called terminal is located in the small cell
  • UE user terminal
  • DAS distributed antenna system
  • 5th generation mobile communication is a next generation wireless network technology including mobile communication, and is a communication using a very high frequency millimeter wave. A clear configuration for this has not been finalized, but 3GPP Release 15 is the most common definition of 5G. Unlike the carrier frequencies of 3G and 4G, millimeter waves used to implement broadband in 5G networks may experience collisions and dispersion when there are obstacles due to straightness. Therefore, millimeter wave (30GHz-300GHz) used in 5G communication can transmit only a short distance due to frequency characteristics. In addition, there is a technical problem of millimeter waves with strong straightness due to the blocking of radio waves by weather or physical terrain features. To overcome this problem, the proposed 5G standard design method uses a small cell in a range of short distance (about 250-300m), and uses a large number of small cells for communication rather than a small number of large cells.
  • FIG. 4 shows the configuration of small cells of a 5G mobile communication system.
  • 5G small cells are classified into femtocells, picocells, microcells, etc., depending on the radius of the cell to be serviced and the number of output and service user equipment (UE).
  • the service area where the millimeter wave can be reached in a straight line can be accessed by a 5G macro cell.
  • Small cells of the 5G mobile communication system public small cells for access services of a plurality of unspecified user terminals (UEs) in public places, small cells for providing data access in buildings or houses can be constructed, ,
  • Each small cell is a small base station and may be configured around an access point (AP) device.
  • AP access point
  • Each small cell may be connected to a 5G macrocell as a wireless backhaul network through a microwave or millimeter wave channel to be connected to a core network, or may be directly connected to a core network through a large-capacity optical channel backhaul.
  • a user terminal may receive a network service through a small cell or directly connected to a 5G macro cell.
  • FIG. 5 shows a connection relationship of small cells in a 5G mobile communication system.
  • Each small cell access point device constituting a small cell in 5G communication is through a backhaul network through a distributed antenna system (DAS) such as massive MIMO. It is connected to a macro cell base station or a core network, and the macro cell base station or core network is connected to each small cell AP through mobile switching centers (MSCs). Therefore, access requests of user terminals (UEs) can be provided with a 5G mobile communication service by being connected to a macro cell base station or a core network via a distributed antenna system-backhaul network-mobile communication switching center.
  • DAS distributed antenna system
  • MCS mobile switching centers
  • the 5G small cell when transmitting or receiving data between user terminals (UEs) located in at least the same cell, through a small cell access point device to a DAS-backhaul network-MSC-macrocell (core network). Since data exchange within the same small cell is performed through the connected path, data traffic and delay speed can be reduced and delay can be reduced by performing direct communication from the DAS through the core network.
  • IoT Internet of Things
  • traffic volume is expected to increase even more explosively.
  • D to D direct (device to device, D to D) communication method.
  • the D to D communication has been discussed from LTE (long term evolution) 4G communication, and a technique in which a user terminal seeks and accesses a terminal to be accessed is common.
  • this conventional method has been practically a barrier to practical use since a user terminal capable of D to D communication must be separately provided, and a communication channel different from the base station or via a base station must be provided for D to D communication.
  • the present invention is to solve the above problems, the user terminal (UE) located in the service area of the small cell uses the 5G communication method as it is, and the terminal to be called is located in the service area of the small cell D to D Provides a connection, and provides a D to D system and method using a 5G small cell to use a 5G communication network by connecting to a DAS when the terminal to be called is not located in the service area of the small cell.
  • D to D system and method using the 5G small cell of the present invention D to D connection between any terminal and a terminal located in the same 5G small cell without searching for a calling terminal for D to D access in a user terminal (UE) Gives
  • FIG. 6 shows the basic configuration of a D-to-D system using the 5G small cell of the present invention.
  • D-to-D system using the 5G small cell of the present invention a small cell having at least one small cell AP (100), and the small cell AP via a distributed antenna system (DAS: Distributed Antenna Systems)
  • DAS Distributed Antenna Systems
  • MSC backhaul network and mobile switching centers
  • D to D communication control unit 200 is provided between antenna systems (DAS), and the D to D communication control unit 200 collects user terminal and access small cell AP information in the small cell, and is located in the small cell.
  • DAS distributed antenna systems
  • D to D connection of the user terminal (UE) and a terminal to be called is performed
  • the called terminal is not located in a small cell, it is characterized in that it is configured to connect the user terminal (UE) to a distributed antenna system (DAS) to perform 5G communication.
  • DAS distributed antenna system
  • Figure 7 shows the configuration of a small cell AP 100 in a D-to-D system using the 5G small cell of the present invention.
  • a main CPU 110 for controlling the small cell AP 100 A UE that classifies and stores the ID of each small cell AP 100 and information (eg, CID: caller ID) of the user terminal (UE) connected to the small cell AP 100 for each small cell AP 100.
  • CID caller ID
  • Data memory 120 A nonvolatile memory 130 in which programs and data for driving the main CPU 110 and IDs of the small cell AP 100 are stored;
  • a UE data processor 150 that detects a signal strength of a user terminal (UE) and detects a data traffic amount;
  • An uplink interface 160 in packet communication with the D to D communication control unit 200 under the control of the main CPU 110;
  • a downlink interface 170 in packet communication with user terminals (UEs) under the control of the main CPU (110);
  • a packet synchronization clock 140 for synchronizing and communicating the uplink packets and downlink packets; It consists of.
  • FIG. 8 shows the configuration of the D to D communication control unit 200 in the D-to-D system using the 5G small cell of the present invention.
  • D to D communication control unit 200 of the present invention D to D communication control unit 200 of the present invention
  • a D to D communication processor 210 driving the D to D communication control unit 200;
  • An AP uplink communication unit 220 connected to the D to D communication processor 210 and receiving uplink packets of small cell APs 100;
  • An AP downlink communication unit 230 connected to the D to D communication processor 210 and providing downlink packets for small cell APs 100;
  • a packet buffer 240 for temporarily storing the uplink packets and downlink packets;
  • An AP ID memory 250 that stores IDs of the small cell APs 100 controlled by the D to D communication control unit 200;
  • a packet clock 260 for synchronizing and communicating the uplink packets and downlink packets with small cell APs 100 and a macro cell and a core network;
  • a packet converter 270 for rearranging uplink packets stored in the packet buffer 240 into downlink packets or converting downlink packets into uplink packets;
  • the D to D communication processor 210 connects the uplink packets and downlink packets to a distributed antenna system (DAS)
  • the D to D communication control unit 200 of the present invention provides uplink packets of the small cell APs 100 to the macro cell and the core network through the DAS interface 280 by the D to D communication processor 210, and the DAS interface. Not only can the downlink packet be provided from the macro cell and the core network through 280, but the uplink packets transmitted from the small cell APs 100 through the AP uplink communication unit 220 are also converted into a packet. It may be converted to a downlink packet through 270) and provided to the small cell APs 100 through the AP downlink communication unit 230.
  • FIG. 9 is a method of driving a D-to-D system using a 5G small cell of the present invention, when a user terminal (UE) in a small cell calls another user terminal located in the same small cell, performing a D to D connection
  • the driving method is shown.
  • the step-by-step description of the driving method is as follows.
  • -S100 transmitting a request signal for calling another user terminal from a user terminal (UE) located in the small cell;
  • the small cell AP to which the user terminal (UE) that originated the request signal is connected transmits (uplink) the ID and other called user terminal data to the D2D communication control unit 200;
  • the D2D communication control unit 200 requesting status information to the small cell AP (100);
  • the small cell AP 100 transmits (uplinks) information of each ID and user terminals in access service to the D2D communication control unit 200, and the D2D communication control unit 200 for each small cell AP 100. Updating and storing information of user terminals in access service in the UE/AP map memory 290;
  • D2D communication control unit 200 the user terminal (UE) to which the other user terminal called according to the information stored in the UE/AP map memory 290 is connected to the destination AP (destination AP) and the user terminal that sent the connection request signal (UE) ) To access the D to D communication by transmitting a connection request signal to the connected small cell AP;
  • -S125 notifying that a D to D connection is established from a small cell AP connected to a user terminal (UE) that has sent a connection request signal:
  • the D2D communication control unit 200 converting uplink packets into downlink packets
  • the D2D communication control unit 200 transmits the converted downlink packets through a small cell AP to which packets between a user terminal (UE) that originated an access request signal and another user terminal called are connected;
  • UE user terminal
  • step S105 the D2D communication control unit 200 repeats from step S105 when there is a request to terminate the D to D service in step S145, and repeats from step S110 if there is no request to end the D to D service.
  • FIG. 10 is a method of driving a D-to-D system using a 5G small cell of the present invention, and performs external 5G connection when a user terminal (UE) in a small cell calls another user terminal not located in the same small cell. It shows the driving method.
  • the step-by-step description of the driving method is as follows.
  • -S200 transmitting a request signal for calling another user terminal from a user terminal (UE) located in the small cell;
  • the small cell AP to which the user terminal (UE) that originated the request signal is connected transmits (uplink) the ID and other called user terminal data to the D2D communication control unit 200;
  • the D2D communication control unit 200 requesting status information for the small cell AP (100);
  • the small cell APs 100 transmit (uplink) each ID and information of the user terminals in the access service to the D2D communication control unit 200, and the D2D communication control unit 200 for each small cell AP 100. Updating and storing information of user terminals in access service in the UE/AP map memory 290;
  • D2D communication control unit 200 the step of connecting the external 5G communication by transmitting an access request signal to the small cell AP connected to the user terminal (UE) that has sent the access request signal;
  • -S230 transmitting uplink packets of a user terminal (UE) that has sent a connection request signal to a connected small cell AP;
  • the packet transmitted to the small cell AP is transmitted through the D2D communication control unit 200 and the DAS;
  • the packet transmitted to the called other user terminal is transmitted from the connected small cell AP to the D2D communication control unit 200 and transmitted to the macro cell or core network through the DAS;
  • -S240 a step of downlinking the packet from another called user terminal from the macro cell or core network to the D2D communication control unit 200;
  • the D2D communication control unit 200 transmits the received downlink packets to the user terminal (UE) through the small cell AP to which the user terminal (UE) that sent the connection request signal is connected;
  • step S240 if a request to terminate the connection to the D2D communication control unit 200 is performed repeatedly from S205, and if there is no request to terminate the connection, it is repeated from step S210.
  • the user terminal (UE) located in the service area of the small cell uses the 5G communication method as it is, and the terminal to be called is within the service area of the small cell
  • the terminal to be called is within the service area of the small cell
  • D to D system and method using the 5G small cell of the present invention D to D connection between any terminal and a terminal located in the same 5G small cell without searching for a calling terminal for D to D access in a user terminal (UE) There is a feature to provide.
  • the present invention can be applied to both D-to-D systems using small cells, and can be used industrially in the field of high-speed communication system technology after 5G.

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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 la communication dispositif à dispositif à l'aide d'une petite cellule 5G. L'invention concerne un système de dispositif à dispositif au moyen d'une petite cellule 5G et un procédé associé, dans lequel un terminal utilisateur (UE) situé dans une zone de desserte d'une petite cellule utilise un procédé de communication 5G tel quel, et fournit une connexion de dispositif à dispositif lorsqu'un terminal à appeler est situé à l'intérieur de la zone de service de la petite cellule, et lorsque le terminal à appeler n'est pas situé dans la zone de desserte de la petite cellule, un réseau de communication 5G est utilisé par connexion au DAS, et le terminal utilisateur (UE) fournit une connexion de dispositif à dispositif entre n'importe quel terminal et un autre terminal situé dans la même petite cellule 5G sans rechercher un terminal appelant pour la connexion de dispositif à dispositif.
PCT/KR2019/017716 2018-12-28 2019-12-13 Système de dispositif à dispositif au moyen d'une petite cellule 5g et procédé associé Ceased WO2020138790A2 (fr)

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KR10-2018-0171437 2018-12-28
KR1020180171437A KR102011666B1 (ko) 2018-12-28 2018-12-28 5G 소형셀을 이용한 D-to-D 시스템 및 그 방법

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