WO2018084178A1 - Dispositif serveur et procédé de communication - Google Patents

Dispositif serveur et procédé de communication Download PDF

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Publication number
WO2018084178A1
WO2018084178A1 PCT/JP2017/039537 JP2017039537W WO2018084178A1 WO 2018084178 A1 WO2018084178 A1 WO 2018084178A1 JP 2017039537 W JP2017039537 W JP 2017039537W WO 2018084178 A1 WO2018084178 A1 WO 2018084178A1
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WIPO (PCT)
Prior art keywords
communication
terminal
cost
information
server
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PCT/JP2017/039537
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English (en)
Japanese (ja)
Inventor
辰徳 小原
真平 安川
聡 永田
理一 工藤
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株式会社Ｎｔｔドコモ
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Priority to JP2018549037A priority Critical patent/JP7086851B2/ja
Publication of WO2018084178A1 publication Critical patent/WO2018084178A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to a server device and a communication method.
  • V2X Vehicle-to-everything
  • ITS Intelligent Transport Systems
  • V2X communication includes vehicle-to-vehicle communication (V2V communication), vehicles and infrastructure such as roadside units (Road Side Unit) installed in traffic lights or signs, or cellular networks. Communication (V2I communication / V2N communication), communication between a vehicle and a pedestrian (Pedestrian) (V2P communication), and the like.
  • V2V communication vehicle-to-vehicle communication
  • vehicles and infrastructure such as roadside units (Road Side Unit) installed in traffic lights or signs, or cellular networks.
  • Communication V2I communication / V2N communication
  • V2P communication communication between a vehicle and a pedestrian (Pedestrian) (V2P communication), and the like.
  • V2X communication introduction of a new communication method is being studied.
  • a wireless LAN such as IEEE802.11p
  • a cellular network such as LTE (Long Terminology Evolution), or 5G (5th generation Genuine mobile communication system) can be cited.
  • LTE Long Terminology Evolution
  • 5G 5th generation Genuine mobile communication system
  • V2X communication In the future, for the realization of V2X communication, collection of environmental information indicating the road environment will become more active, and the traffic of sensor information (that is, uplink (UL) data) from vehicles will increase dramatically. Is assumed. Similarly, in V2X communication, it is assumed that the capacity of download information (ie, downlink (DL) data) such as in-car entertainment information or advanced map information will increase.
  • download information ie, downlink (DL) data
  • V2X communication it is required to perform DL data communication to a terminal (sometimes called a UE (User (Equipment)) at a lower cost.
  • a terminal sometimes called a UE (User (Equipment)
  • One aspect of the present invention is to provide a server device and a communication method capable of performing DL data communication to a terminal at lower cost in V2X communication.
  • the communication cost is less than a first threshold based on a communication cost in a communication area where at least one terminal can communicate and a position of the at least one terminal.
  • a determination unit that determines a first terminal that receives downlink data in one communication area; and a communication unit that transmits downlink data in the first communication area to the first terminal.
  • DL data communication to a terminal can be performed at a lower cost.
  • V2X communication Unlike normal data communication, the traffic downloaded by a terminal in V2X communication is requested with a priority on reducing communication cost (sometimes called "bit cost” or simply “cost") rather than improving communication quality. Is done.
  • the download information in V2X communication also includes information that is relatively urgent and does not require download with low delay.
  • Communication cost is an index indicating how much communication unit price can be used in the terminal.
  • the communication cost is at least one of the unit price used for communication per unit time, the amount of resources occupied in communication, and the frequency utilization efficiency per transmission (MCS (Modulation Coding Scheme) or scheduling policy). It may be calculated based on this.
  • MCS Modulation Coding Scheme
  • the parameters used for calculating the communication cost are not limited to these, and may be parameters related to the communication fee charged to the terminal.
  • the present inventors examined a communication method capable of performing DL data transmission to a terminal at lower cost in V2X communication.
  • the communication cost depends on the operation cost of the base station. Further, the operation cost of the base station is determined according to the communication area in which the terminal can communicate and the peak communication amount in time. That is, as the communication amount at the peak time increases, the operation cost of the base station increases, and as a result, the communication cost increases.
  • the inventors of the present invention focused on this point and reached the present invention. Specifically, in a communication area (coverage) in which the terminal can communicate, an area where the communication cost is low or a transmission time (timing) where the communication cost is low is specified, and the communication cost is low for the terminal. It came to receive DL data by area or transmission time.
  • V2X communication it is not always necessary to uniquely determine a terminal that receives download information.
  • An ITS system using V2X communication may be transmitted to an area (communication) corresponding to an area or transmission time where the communication cost is low.
  • FIG. 1 shows a configuration example of a communication system according to the present embodiment.
  • the communication system shown in FIG. 1 includes at least an ITS server (server device) 100, a core network node (core NW node) 200, a base station (sometimes called an eNB) 300, and a terminal 400.
  • the core NW node 200, the base station 300, and the terminal 400 configure, for example, a cellular network (for example, a 5G system).
  • the ITS server 100 is an application server that provides an ITS service using V2X communication.
  • the ITS server 100 collects environmental information regarding the road environment in the communication area covered by the base station 300 from the terminal 400 mounted on each of the plurality of vehicles, and based on the collected environmental information, automatic driving or Performs ITS service processing such as traffic accident prevention.
  • the ITS server 100 transmits download information (DL data) regarding the ITS service to the terminal 400.
  • the download information includes information common to each terminal 400 such as map information.
  • the ITS server 100 also includes information indicating communication costs in each communication area of the base station 300 (hereinafter referred to as “cost information”) and information indicating the position of the terminal 400 (hereinafter referred to as “position information”). ) To determine a terminal 400 that performs communication requiring a low cost in the communication area and transmission time required for DL data communication (hereinafter referred to as “low cost communication”). Then, the ITS server 100 transmits DL data to the determined terminal 400 in a communication area and communication time in which low-cost communication is possible.
  • cost information information indicating communication costs in each communication area of the base station 300
  • position information information indicating the position of the terminal 400
  • the ITS server 100 acquires information indicating the wireless quality of the terminal 400 (hereinafter referred to as “quality information”), and the terminal 400 whose wireless quality is equal to or higher than a predetermined threshold (the terminal 400 having good wireless quality). ) DL data may be transmitted.
  • the ITS server 100 may acquire cost information from the core NW node 200, or may hold cost information set in advance according to the communication area or transmission time.
  • the communication cost may be associated with, for example, a combination of a communication area in which the terminal 400 can communicate and a transmission time in the communication area. In the cost information, any one of the communication area and the transmission time may be associated with the communication cost.
  • the cost information may be generated in the core NW node 200 or may be generated in the ITS server 100. When generating cost information in the ITS server 100, the ITS server 100 acquires parameters (position information of the terminal 400, charging information, etc.) necessary for generating the cost information from the core NW node 200.
  • the core NW node 200 accommodates at least one radio access network (base station 300).
  • the core NW node 200 includes, for example, a location registration server 201 (for example, MME (Mobility Management Entity)) that registers the location of the terminal 400 within the communication area of the base station 300, and a billing server 202 that manages billing of each terminal 400.
  • a gateway (GW) 203 connected to an external system (for example, the ITS server 100).
  • the billing server 202 manages cost information in the communication area of each base station 300 in addition to processing for managing billing of each terminal 400, for example.
  • the accounting server 202 associates the location of the terminal 400 registered in the location registration server 201 with the accounting information of the terminal 400 at the location, so that communication is performed at what communication cost in each communication area. Is managed as cost information.
  • the base station 300 communicates by connecting to the terminal 400 or the core NW node 200 existing in the communication area covered by the own station. In addition, the base station 300 allocates DL resources to DL data from the ITS server 100 to the terminal 400, and transmits DL data using the DL resources.
  • the terminal 400 for example, uploads UL data (environment information) indicating the result of sensing performed by a sensor installed in the vehicle to the ITS server 100 via the base station 300 and the core NW node 200. Further, the terminal 400 receives DL data (download information such as map information) from the ITS server 100.
  • UL data environment information
  • DL data download information such as map information
  • the terminal 400 may support both low-cost communication such as V2X communication and communication that does not require low cost such as normal data communication (hereinafter referred to as “normal cost communication”).
  • each communication may be distinguished by a “cost class” in which communication (low cost communication and normal cost communication) is classified according to a required communication cost.
  • the cost class may be distinguished according to QCI (Quality Service Class Identifier).
  • a plurality of logical connections are performed between the terminal 400 and the core NW node 200, and cost classes are distinguished for each logical connection. May be.
  • a lower layer physical (PHY) layer, MAC, etc.
  • an upper layer application layer, IP (Internet protocol) layer, etc.
  • Downlink transmission packet is passed to (Medium Access Control) layer.
  • the base station 300 may transmit a packet by distinguishing low-cost communication and normal-cost communication in packet units or logical channel units in the lower layer.
  • the base station 300 does not output a downlink transmission packet from the upper layer to the lower layer when the predetermined condition is not satisfied. By this processing, communication that is unintentionally expensive can be avoided.
  • FIG. 2 is a diagram illustrating a configuration example of the ITS server 100 according to the present embodiment.
  • the ITS server 100 illustrated in FIG. 2 employs a configuration including a cost information acquisition unit 101, a terminal information acquisition unit 102, a determination unit 103, and a communication unit 104.
  • Cost information acquisition unit 101 acquires cost information indicating the communication cost in each communication area of base station 300 from core NW node 200 via communication unit 104. Specifically, the cost information acquisition unit 101 transmits signaling for inquiring cost information to the core NW node 200 via the communication unit 104. Then, the cost information acquisition unit 101 outputs the cost information acquired by the inquiry to the determination unit 103.
  • the ITS server 100 may hold cost information in advance. In this case, the ITS server 100 does not require processing for acquiring cost information from the core NW node 200 (that is, the cost information acquisition unit 101).
  • the terminal information acquisition unit 102 acquires terminal information including position information indicating the position of the terminal 400 and quality information indicating radio quality in the terminal 400 from the core NW node 200 via the communication unit 104.
  • the terminal information acquisition unit 102 may acquire the terminal information by transmitting signaling for querying the terminal information to the core NW node 200 or the terminal 400 via the communication unit 104.
  • the terminal information transmitted from the terminal 200 or the terminal 400 at a predetermined timing or periodically may be acquired. Then, the terminal information acquisition unit 102 outputs the acquired terminal information to the determination unit 103.
  • the determination unit 103 Based on the cost information input from the cost information acquisition unit 101 and the terminal information (position information, quality information) input from the terminal information acquisition unit 102, the determination unit 103 receives the DL data, and The communication area and the transmission time for transmitting DL data to the terminal 400 that is the transmission destination of the DL data are determined.
  • the determination unit 103 identifies the communication area and the transmission time of the communication cost classified as low among the communication costs included in the cost information (for example, the communication area and the transmission time whose communication cost is less than a predetermined threshold). To do. Then, the determination unit 103 determines a terminal 400 that receives DL data in a communication area and transmission time in which low-cost communication is possible (that is, a terminal 400 that can perform low-cost communication in the downlink).
  • the determination unit 103 determines whether or not the wireless quality indicated in the quality information is equal to or higher than a threshold (whether or not the wireless quality is good) for the terminal 400 capable of low-cost communication. Then, the determination unit 103 determines a terminal 400 having good radio quality and capable of low-cost communication as a DL data transmission destination terminal.
  • the determining unit 103 outputs a DL data transmission instruction to the communication unit 104 for the terminal 400 determined as the DL data transmission destination.
  • the communication unit 104 transmits DL data to the target terminal 400 in accordance with a transmission instruction output from the determination unit 103.
  • the ITS server 100 determines the terminal 400 capable of low-cost communication for the communication area and transmission time with low communication cost.
  • the present invention is not limited to this processing, and for example, the ITS server 100 may determine the terminal 400 capable of low-cost communication for either one of the communication area and the transmission time.
  • the ITS server 100 may specify the base station 300 having a transmission time capable of low-cost communication, and determine the terminal 400 capable of communication at the transmission time in the specified base station 300.
  • FIG. 3 is a diagram illustrating a configuration example of the terminal 400 according to the present embodiment.
  • a terminal 400 illustrated in FIG. 3 employs a configuration including a position information generation unit 401, a radio quality measurement unit 402, and a communication unit 403.
  • the position information generation unit 401 generates position information indicating the position of the own device.
  • the position information generation unit 401 may measure the position of its own device by GPS (Global Positioning System) or the like, and generate position information indicating a positioning result.
  • the position information generating unit 401 may use information indicating the area where the device is located (for example, a cell ID, TA (Tracking Area), TA area list, etc.) as the position information.
  • the position information generation unit 401 may acquire information indicating the travel position (or planned travel position) of the vehicle from the car navigation system of the vehicle on which the terminal 400 is mounted, and use the information as the position information.
  • the position information generation unit 401 outputs the position information to the communication unit 403.
  • the wireless quality measuring unit 402 measures the wireless quality between the own device and the base station 300 to which the own device is connected. Examples of radio quality include received power, RSSI (Received Signal Strength Indicator), RSRP (Reference Signal Received Power), SINR (Signal Signal Interference and Noise Ratio), RSRQ (Reference Signal Received Quality), and the like.
  • the radio quality measuring unit 402 outputs quality information indicating the measured radio quality to the communication unit 403.
  • the communication unit 403 transmits the position information input from the position information generation unit 401, the quality information input from the wireless quality measurement unit 402, or UL data to the base station 300. In addition, the communication unit 403 receives DL data transmitted from the ITS server 100 via the base station 300.
  • the terminal in (i) the cost information and terminal information acquisition method performed by the ITS server 100, (ii) the DL data transmission control method performed by the ITS server 100, and (iii) the cost information used by the ITS server 100
  • the relationship between 400 positions and communication costs will be described in detail.
  • FIG. 4 is a diagram illustrating an operation example of the communication system when the ITS server 100 acquires cost information.
  • the ITS server 100 transmits signaling for inquiring cost information to the core NW node 200 (for example, the billing server 202).
  • the core NW node 200 when the core NW node 200 receives signaling for inquiring cost information from the ITS server 100, the core NW node 200 transmits the held cost information to the ITS server 100.
  • the ITS server 100 may hold
  • FIG. 5 is a diagram illustrating an operation example of the communication system when the ITS server 100 acquires terminal information.
  • terminal 400 reports position information (for example, a location area or a positioning result) indicating the position of terminal 400 to core NW node 200.
  • position information for example, a location area or a positioning result
  • quality information indicating the radio quality in terminal 400 to core NW node 200.
  • core NW node 200 transmits terminal information including location information and quality information of terminal 400 reported in ST201 and ST202 to ITS server 100.
  • the terminal 400 may report the position information and the quality information to the core NW node 200 in ST201 and ST202, for example, when receiving the signaling for inquiring the position information or the quality information from the ITS server 100.
  • terminal 400 may report position information and quality information to core NW node 200 in ST201 and ST202 at a predetermined timing or periodically, independently of the operation of ITS server 100.
  • the terminal 400 that is required to be low in cost (the terminal 400 that is the target of cost reduction) is compared with the terminal 400 that is not the target of cost reduction, for example, the positional information (for example, the area within the area)
  • the quality information may be reported to the core NW node 200 in a narrow area or with high frequency.
  • the ITS server 100 can acquire more accurate position information or quality information of the terminal 400.
  • the cost reduction target terminal 400 reports the position information or the quality information at a high frequency
  • the ITS server 100 can acquire the position information or the quality information reflecting the current state of the terminal 400, and the DL data The accuracy of transmission control can be improved.
  • the core NW node 200 may transmit the terminal information to the ITS server 100 each time the position information of the terminal 400 is registered in the position registration server 201, and the terminal of the terminal 400 that is a target of low-cost communication. Information may be periodically transmitted to the ITS server 100.
  • the ITS server 100 may inquire in the order of terminal information and cost information, or may inquire both cost information and terminal information at the same time.
  • the terminal 400 When transmitting DL data from the ITS server 100, the terminal 400 is in a state of being connected (accessed) to the base station 300 (Connected state) and in a state of not being connected to the base station 300 (Idle state). It is assumed that there is a certain case.
  • 6A and 6B are diagrams illustrating an example of DL data transmission control when the terminal 400 is in the Connected state.
  • the ITS server 100 can perform low-cost communication based on cost information and terminal information (position information and quality information) acquired as shown in FIG. 4 or FIG. It is determined whether there is a terminal 400 serving as a DL data transmission destination in the area (position determination).
  • the cost information when the communication cost is associated with the combination of the communication area and the transmission time in the communication area, the ITS server 100 determines whether the DL data is in the combination of the communication area and the transmission time capable of low-cost communication. It may be determined whether or not there is a terminal 400 serving as a transmission destination.
  • the ITS server 100 determines whether or not the wireless quality of the terminal 400 is good based on the quality information (quality determination).
  • the ITS server 100 can perform low-cost communication to the terminal 400 in ST302.
  • DL data is transmitted in a proper communication area or transmission time.
  • the ITS server 100 when there is no terminal 400 capable of low-cost communication (determination result: NO), the ITS server 100 does not perform DL data transmission processing. For example, the ITS server 100 holds DL data for a certain period (waits for transmission). Note that the ITS server 100 may transmit the DL data in the same manner as in FIG. 6A when it is determined that the terminal 400 is capable of low-cost communication while holding the DL data (waiting for transmission).
  • the terminal 400 discards the DL data (packet) when a certain period of time has elapsed after holding the DL data (for example, when the timer expires) or when it is determined to discard the DL data (ST303).
  • the ITS server 100 can perform communication at a low cost based on the cost information, the position information of the terminal 400, and the quality information, or the transmission time (communication area or transmission time where the communication cost is less than the threshold).
  • the terminal 400 which becomes the transmission destination of DL data is determined. By this processing, the terminal 400 can receive DL data with low cost and good radio quality.
  • the ITS server 100 predicts a position where the terminal 400 will move in the future, for example, and a terminal that is a transmission destination of DL data in a communication area where low-cost communication is possible based on the position of the destination of the terminal 400 400 may be determined. For example, the ITS server 100 may predict the future position of the terminal 400 using the travel plan in the car navigation system of the vehicle on which the terminal 400 is mounted as the position information. If there is a terminal 400 that is a DL data transmission destination in a communication area where low-cost communication is possible, the ITS server 100 may secure (reserve) a DL data reception opportunity for the terminal 400. . With this process, the ITS server 100 can more flexibly perform DL data transmission control using low-cost communication using not only the current position of the terminal 400 but also a position where the terminal 400 will move in the future.
  • the ITS server 100 can transmit DL data only to the terminal 400 that exists in the communication area where low-cost communication is possible, and the communication cost of each terminal 400 can be reduced.
  • a downlink (DL) reception process may be a trigger.
  • the following method can be cited as a condition for transitioning to the Connected state by a DL reception trigger.
  • the terminal 400 transitions from the Idle state to the Connected state according to the following conditions.
  • a base station that transmits Paging (hereinafter referred to as a Paging transmission base station) is selected based on the communication cost in addition to the location registration area of the terminal 400.
  • the base station 300 having an area with a low communication cost (for example, the minimum communication cost) is selected from the base stations 300 that can be connected to the terminal 400.
  • the Paging transmission base station transmits the Paging to the terminal 400.
  • the terminal 400 transitions from the Idle state to the Connected state with the reception of Paging as a trigger.
  • examples of the method for determining the base station 300 that transmits Paging to the terminal 400 as the Paging transmission base station include the following methods (1) and (2).
  • FIG. 7 is a diagram illustrating a method for determining a Paging transmission base station in the determination method (1).
  • the ITS server 100 transmits an upper layer (for example, IP layer) packet to the core NW node 200.
  • the header of this packet includes cost information regarding communication costs in the plurality of base stations 300.
  • the core NW node 200 confirms the packet header from the ITS server 100 and identifies cost information (for example, cost class) of a plurality of base stations 300 connectable to the terminal 400.
  • cost information for example, cost class
  • the core NW node 200 selects a Paging transmission base station from the plurality of base stations 300 based on the cost information. For example, the core NW node 200 may select a base station 300 whose cost class satisfies a predetermined condition (communication cost is less than a predetermined threshold) as a Paging transmission base station.
  • a predetermined condition communication cost is less than a predetermined threshold
  • the core NW node 200 instructs the base station 300 selected as the paging transmission base station to transmit paging to the terminal 400.
  • base station 300 Paging transmission base station
  • Paging transmission base station transmits Paging to terminal 400.
  • the terminal 400 transitions from the Idle state to the Connected state.
  • FIG. 8 is a diagram illustrating a method for determining a Paging transmission base station in the determination method (2).
  • the ITS server 100 transmits a packet to the core NW node 200.
  • core NW node 200 selects a Paging transmission base station (candidate) from among a plurality of base stations 300 based on, for example, the location registration area of transmission destination terminal 400 of the packet received from ITS server 100. .
  • the core NW node 200 instructs the base station 300 selected as the paging transmission base station to transmit paging to the terminal 400.
  • base station 300 that has received the Paging transmission instruction transmits Paging to terminal 400 based on, for example, the cost class for each logical connection (for example, bearer or PDN connection) or QCI (QoS Class Identifier). It is determined whether or not. For example, the base station 300 may determine to transmit the paging to the terminal 400 when its own cost class satisfies a predetermined condition (communication cost is less than a predetermined threshold).
  • a predetermined condition communication cost is less than a predetermined threshold.
  • base station 300 transmits Paging to terminal 400.
  • the terminal 400 transitions from the Idle state to the Connected state.
  • base station 300 requests core NW node 200 to reselect a Paging transmission base station (candidate).
  • the core NW node 200 reselects the Paging transmission base station, for example, in the same manner as ST502.
  • the core NW node 200 or the base station 300 selects the Paging transmission base station based on the cost class.
  • the terminal 400 can receive DL data from the ITS server 100 at low cost through the base station 300 having an area with low communication cost after transitioning to the Connected state.
  • the billing server 202 in the core NW node 200 associates the position (communication area) where the terminal 400 communicates with the communication cost (communication charge, etc.) of the terminal 400 at the position. Further, billing server 202 may further associate the time when terminal 400 communicates with the communication cost of terminal 400 at that time.
  • the accounting server 202 acquires the location information of the terminal 400 by the following method.
  • the location registration server 201 notifies the billing server 202 of the location registration area of the terminal 400.
  • the location registration server 201 may notify the billing server 202 of the location registration area when the location registration area of the terminal 400 is updated or periodically.
  • the charging server 202 acquires the position of the terminal 400 measured by the terminal 400 or the position of the terminal 400 measured by a positioning server (not shown).
  • the billing server 202 may acquire the position information of the terminal 400 from the terminal 400 or the positioning server at the timing when the position of the terminal 400 is updated or periodically.
  • the billing server 202 determines the communication cost required for the DL data communication by the terminal 400, the location where the terminal 400 receives the DL data (that is, the communication area of the base station 300), or the terminal 400 receives the DL data. It can be managed as cost information in association with the received time.
  • the ITS server 100 acquires the cost information from the billing server 202, thereby identifying the area where each base station 300 can perform low-cost communication and the time during which low-cost communication is possible. For example, when the location of the terminal 400 is changed or when the terminal 400 communicates and is charged, the billing server 202 sets the communication cost, communication area (position of the terminal 400), and communication time managed as cost information. By updating, the accuracy of cost information can be improved.
  • the charging server 202 is not limited to the case of associating the actual communication cost itself when associating the communication cost with the location where the terminal 400 received the DL data.
  • the accounting server 202 reports the predicted position of the movement route of the terminal 400 as a position where the terminal 400 communicates.
  • the charging server 202 may associate a value obtained by adding a predetermined value (penalty) to the actual communication cost with the predicted position. .
  • the communication cost associated with the predicted position becomes higher than the actual communication cost, so the reliability of the predicted position is lowered, and the ITS server 100 is an area where low-cost communication is possible for the predicted position. It becomes difficult to be judged.
  • the ITS server 100 can perform communication at low cost based on the communication cost in the communication area in which at least one terminal 400 can communicate and the position of the terminal 400 (communication cost is a threshold value).
  • Terminal 400 (DL data transmission destination) that receives DL data is determined in the communication area or time), and DL data is transmitted to the determined terminal 400 in a communication area or time in which low-cost communication is possible.
  • each terminal 400 can receive DL data in a communication area or time with a lower communication cost.
  • each functional block may be realized by one device physically and / or logically coupled, and two or more devices physically and / or logically separated may be directly and / or indirectly. (For example, wired and / or wireless) and may be realized by these plural devices.
  • the server device, each device in the core NW node, the base station (wireless base station), and the terminal (user terminal) according to the embodiment of the present invention are used as computers that perform the processing of the communication method of the present invention. May function.
  • FIG. 9 is a diagram illustrating an example of a hardware configuration of the server device, each device in the core NW node, the base station, and the terminal according to the embodiment of the present invention.
  • the server apparatus 100, the core NW node 200, the base station 300, and the terminal 400 described above physically include a processor 1001, a memory 1002, a storage 1003, a communication apparatus 1004, an input apparatus 1005, an output apparatus 1006, a bus 1007, and the like. It may be configured as a computer device.
  • the term “apparatus” can be read as a circuit, a device, a unit, or the like.
  • the hardware configuration of the server device 100, the core NW node 200, the base station 300, and the terminal 400 may be configured to include one or more of the devices illustrated in the figure, or may not include some devices. It may be configured.
  • Each function in the server apparatus 100, the core NW node 200, the base station 300, and the terminal 400 is performed by causing the processor 1001 to perform calculation by reading predetermined software (program) on hardware such as the processor 1001 and the memory 1002. This is realized by controlling communication by the communication device 1004 or reading and / or writing of data in the memory 1002 and the storage 1003.
  • the processor 1001 controls the entire computer by operating an operating system, for example.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the cost information acquisition unit 101, the terminal information acquisition unit 102, the determination unit 103, the position information generation unit 401, the wireless quality measurement unit 402, and the like described above may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), software module, or data from the storage 1003 and / or the communication device 1004 to the memory 1002, and executes various processes according to these.
  • a program program that causes a computer to execute at least a part of the operations described in the above embodiments is used.
  • the determination unit 103 of the server device 100 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and may be realized similarly for other functional blocks.
  • the above-described various processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001.
  • the processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunication line.
  • the memory 1002 is a computer-readable recording medium, and includes, for example, at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. May be.
  • 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, and the like that can be executed to implement the wireless communication method according to the embodiment of the present invention.
  • the storage 1003 is a computer-readable recording medium such as 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). (Registered trademark) disk, smart card, flash memory (for example, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
  • the storage 1003 may be referred to as an auxiliary storage device.
  • the storage medium described above may be, for example, a database, server, or other suitable medium including the memory 1002 and / or the storage 1003.
  • the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like.
  • a network device for example, the above-described communication units 104 and 403 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, etc.) that accepts 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 have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured with a single bus or may be configured with different buses between apparatuses.
  • the server apparatus 100, the core NW node 200, the base station 300, and the terminal 400 include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and an FPGA (FPGA).
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA FPGA
  • Hardware Field Programmable Gate Array
  • the processor 1001 may be implemented by at least one of these hardware.
  • information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) 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 message, an RRC connection reconfiguration message, or the like.
  • Each aspect / embodiment described herein includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, 5G + (5G plus), 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-WideBand), Bluetooth (registered trademark), other appropriate systems, and / or next-generation systems extended based on them may be applied.
  • the specific operation assumed to be performed by the base station in this specification may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal may be performed by the base station and / or other network nodes other than the base station (e.g., It is obvious that this can be performed by MME (Mobility Management Entity) or S-GW (Serving Gateway).
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Information, signals, and the like can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.
  • Input / output information and the like may be stored in a specific location (for example, a memory) or may be managed by a management table. Input / output information and the like can be overwritten, updated, or additionally written. The output information or the like may be deleted. The input information or the like may be transmitted to another device.
  • the determination may be performed by a value represented by 1 bit (0 or 1), may be performed by a true / false value (Boolean: true or false), or may be performed by comparing numerical values (for example, a predetermined value) Comparison with the value).
  • software, instructions, etc. may be transmitted / received via a transmission medium.
  • software may use websites, servers, or other devices using wired technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave.
  • wired technology such as coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave.
  • DSL digital subscriber line
  • wireless technology such as infrared, wireless and microwave.
  • Information, signal Information, signals, etc. described herein may be represented using any of a variety of different technologies.
  • data, commands, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these May be represented by a combination of
  • the channel and / or symbol may be a signal.
  • the signal may be a message.
  • the component carrier (CC) may be called a carrier frequency, a cell, or the like.
  • radio resource may be indicated by an index.
  • a base station may accommodate one or more (eg, three) cells (also referred to as sectors). When the base station accommodates multiple cells, the entire coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (eg, indoor small base station RRH: Remote Radio Head) can also provide communication services.
  • the term “cell” or “sector” refers to part or all of the coverage area of a base station and / or base station subsystem that provides communication services in this coverage. Further, the terms “base station”, “eNB”, “cell”, and “sector” may be used interchangeably herein.
  • a base station may also be referred to in terms such as a fixed station, NodeB, eNodeB (eNB), access point, femtocell, small cell, and the like.
  • the terminal is a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal by those skilled in the art , Wireless terminal, remote terminal, handset, user agent, mobile client, client, UE (User Equipment), or some other appropriate terminology.
  • determining may encompass a wide variety of actions. “Judgment” and “determination” are, for example, judgment, calculation, calculation, processing, derivation, investigating, looking up (eg, table , Searching in a database or another data structure), considering ascertaining as “determining”, “deciding”, and the like.
  • determination and “determination” include receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (accessing) (e.g., accessing data in a memory) may be considered as “determined” or "determined”.
  • determination and “decision” means that “resolving”, “selecting”, “choosing”, “establishing”, and “comparing” are regarded as “determining” and “deciding”. May be included. In other words, “determination” and “determination” may include considering some operation as “determination” and “determination”.
  • connection means any direct or indirect connection or coupling between two or more elements and It can include the presence of one or more intermediate elements between two “connected” or “coupled” elements.
  • the coupling or connection between the elements may be physical, logical, or a combination thereof.
  • the two elements are radio frequency by using one or more wires, cables and / or printed electrical connections, and as some non-limiting and non-inclusive examples
  • electromagnetic energy such as electromagnetic energy having a wavelength in the region, microwave region, and light (both visible and invisible) region, it can be considered to be “connected” or “coupled” to each other.
  • the phrase “based on” does not mean “based only on”, unless expressly specified otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using designations such as “first”, “second”, etc. as used herein does not generally limit the amount or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, a reference to the first and second elements does not mean that only two elements can be employed there, or that in some way the first element must precede the second element.
  • notification of predetermined information is not limited to explicitly performed, but is performed implicitly (for example, notification of the predetermined information is not performed). Also good.
  • One embodiment of the present invention is useful for a mobile communication system.

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

Abstract

Sur la base d'un coût de communication dans une zone de communication dans laquelle au moins un terminal est capable de communiquer, et sur la base de la position du ou des terminaux, ce dispositif serveur détermine un premier terminal qui doit être amené à recevoir des données de liaison descendante dans une première zone de communication ayant un coût de communication qui est inférieur à un seuil, et transmet les données de liaison descendante au premier terminal dans la première zone de communication.
PCT/JP2017/039537 2016-11-01 2017-11-01 Dispositif serveur et procédé de communication WO2018084178A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009188883A (ja) * 2008-02-08 2009-08-20 Toyota Motor Corp 車両用通信装置、通信システム、通信制御方法
JP2010032418A (ja) * 2008-07-30 2010-02-12 Denso Corp 車両ナビゲーション装置及び携帯電話機を用いた経路探索システム
EP2658211A1 (fr) * 2012-04-25 2013-10-30 Hitachi Ltd. Procédé et appareil de gestion de téléchargement de données vers un dispositif mobile d'utilisateur qui se déplace le long d'un itinéraire de voyage
JP2015008399A (ja) * 2013-06-25 2015-01-15 日本電気株式会社 情報配信システム、通信端末、配信装置、データ受信方法、データ配信方法及びプログラム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5430235B2 (ja) 2008-07-23 2014-02-26 三菱電機株式会社 情報処理装置及びプログラム
US8909472B2 (en) 2010-12-22 2014-12-09 Telefonaktiebolaget L M Ericsson (Publ) Rate discount forecasts for wireless user terminals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009188883A (ja) * 2008-02-08 2009-08-20 Toyota Motor Corp 車両用通信装置、通信システム、通信制御方法
JP2010032418A (ja) * 2008-07-30 2010-02-12 Denso Corp 車両ナビゲーション装置及び携帯電話機を用いた経路探索システム
EP2658211A1 (fr) * 2012-04-25 2013-10-30 Hitachi Ltd. Procédé et appareil de gestion de téléchargement de données vers un dispositif mobile d'utilisateur qui se déplace le long d'un itinéraire de voyage
JP2015008399A (ja) * 2013-06-25 2015-01-15 日本電気株式会社 情報配信システム、通信端末、配信装置、データ受信方法、データ配信方法及びプログラム

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