WO2017046978A1 - 基地局装置、無線端末、及びこれらの方法 - Google Patents
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- WO2017046978A1 WO2017046978A1 PCT/JP2016/002979 JP2016002979W WO2017046978A1 WO 2017046978 A1 WO2017046978 A1 WO 2017046978A1 JP 2016002979 W JP2016002979 W JP 2016002979W WO 2017046978 A1 WO2017046978 A1 WO 2017046978A1
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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
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
- H04W36/083—Reselecting an access point wherein at least one of the access points is a moving node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/38—Reselection control by fixed network equipment
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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
- H04W4/50—Service provisioning or reconfiguring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
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- 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
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
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- 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
- H04W88/08—Access point devices
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- 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
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- This disclosure relates to wireless communication systems, and in particular to V2X services.
- Non-Patent Document 1 describes use cases and potential requirements for Long Term Evolution (LTE) -based Vehicle-to-Everything (V2X) services.
- V2X means vehicle-related communications (vehicular communications), and includes vehicle-to-vehicle (V2V) communications, vehicle-to-infrastructure (V2I) communications, and vehicle-to-pedestrian (V2P) communications.
- V2V communication or V2V service is a communication or service between User Equipments (UEs) installed in a vehicle and using V2V application.
- UEs User Equipments
- V2I communication or V2I service means communication or service between UE and Road ⁇ Side Unit (RSU) that both use V2I application.
- RSU Road ⁇ Side Unit
- V2I communication includes Infrastructures-to-Vehicle (I2V) communication.
- UE here contains not only vehicle UE but UE of a pedestrian.
- the RSU is an entity installed on the roadside, and supports V2I services including transmission and reception with the vehicle UE using the V2I application.
- the RSU is implemented in a base station such as LTE (that is, Evolved Node B (eNB)) or a stationary UE (stationary UE).
- eNB Evolved Node B
- V2P communication or V2P service means communication or service between a vehicle UE and a pedestrian UE that both use V2I application.
- V2P communication may be performed via RSU and may be referred to as V2I2P communication or P2I2V communication.
- Non-Patent Document 1 describes a configuration in which the vehicle and the RSU both implement Prose-enabled UE and the vehicle and the RSU perform Proximity-based services (Prose) communication in Section 5.6 V2I Emergency Stop Use Case .
- ProSe communication is an example of device-to-device (D2D) communication, and includes direct communication between two or more adjacent ProSe-enabled UEs.
- the vehicle A transmits a message indicating an event such as an emergency stop (emergency stop) to the service RSU.
- the service RSU receives the message from the vehicle A and relays the message to surrounding vehicles. All vehicles located within the transmission range of the service RSU can receive the message.
- RSU ⁇ ⁇ C detects that an accident has occurred in the area managed by itself and detects the occurrence of the accident in a remote server (Traffic Notify Safety Server (TSS) or Intelligent Transport Systems (ITS) server) and start sending the information into the area.
- TSS Traffic Notify Safety Server
- ITS Intelligent Transport Systems
- the server informs RSUs near RSU C that an accident has occurred in an area managed by RSU C.
- Nearby RSUs begin sending V2X messages indicating that an accident occurred within the area indicated by RSU C.
- Non-Patent Document 1 does not show a specific procedure for starting the V2X service. That is, the procedure for provisioning for the V2X service to the UE using the V2X service such as the vehicle UE, the pedestrian UE, or the RSU having the UE function is not clear.
- One of the objects to be achieved by the embodiments disclosed herein is an apparatus, a method, and a program that contribute to realizing a procedure for provisioning for a V2X service to a wireless terminal that uses the V2X service. Is to provide. It should be noted that this object is only one of a plurality of objects that the embodiments disclosed herein intend to achieve. Other objects or problems and novel features will become apparent from the description of the present specification or the accompanying drawings.
- the base station apparatus includes at least one radio transceiver and at least one processor.
- the at least one processor transmits V2X support information indicating that a vehicle-to-everything (V2X) service is supported by a serving network including the base station device via the at least one radio transceiver,
- V2X vehicle-to-everything
- the V2X setting is transmitted to the first wireless terminal in response to the reception of the V2X terminal information transmitted from the first wireless terminal that has received the V2X support information.
- the method in the base station apparatus includes (a) transmitting V2X support information indicating that a vehicle-to-everything (V2X) service is supported by a serving network including the base station apparatus; And (b) transmitting V2X settings to the first wireless terminal in response to receiving the V2X terminal information transmitted from the first wireless terminal that has received the V2X support information.
- V2X vehicle-to-everything
- the wireless terminal includes at least one wireless transceiver and at least one processor.
- the at least one processor receives V2X support information from the serving network via the at least one radio transceiver indicating that vehicle-to-everything (V2X) service is supported by the serving network, and the V2X support V2X terminal information indicating that the V2X service is interested in response to reception of information is transmitted to the serving network, and V2X settings transmitted from the serving network in response to transmission of the V2X terminal information are received.
- the V2X communication is performed according to the V2X setting.
- a method in a wireless terminal includes: (a) receiving V2X support information from the serving network indicating that a vehicle-to-everything (V2X) service is supported by the serving network; (b) In response to receiving the V2X support information, transmitting V2X terminal information indicating an interest in the V2X service to the serving network, and (c) from the serving network in response to transmitting the V2X terminal information. Receiving a transmitted V2X setting and performing V2X communication according to the V2X setting.
- V2X vehicle-to-everything
- the cellular communication network includes one or more base stations and a control entity.
- the one or more base stations are configured to transmit V2X support information indicating that a vehicle-to-everything (V2X) service is supported by the cellular communication network.
- V2X vehicle-to-everything
- the control entity changes a V2X configuration via the one or more base stations. It is configured to transmit to a wireless terminal.
- a method in a cellular communication network includes: (a) transmitting V2X support information from a base station indicating that a Vehicle-to-Everything (V2X) service is supported by the cellular communication network; b) In response to receiving the V2X terminal information transmitted from the first wireless terminal that has received the V2X support information via the one or more base stations, the V2X setting is set to the one or more base stations. Transmitting from the control entity to the first wireless terminal via.
- V2X Vehicle-to-Everything
- the program includes a group of instructions (software code) for causing the computer to perform the method according to the second or fourth aspect described above when read by the computer.
- EPS Evolved Packet System
- SAE System Architecture Evolution
- 3GPP UMTS 3GPP2 CDMA2000 systems (1xRTT, HRPD (High Rate Packet Data)
- GSM registered trademark
- GPRS General packet radio service
- WiMAX WiMAX
- FIG. 1 shows a configuration example of a wireless communication system according to some embodiments including the first embodiment.
- Radio terminals (UE) 100 to 102 are mounted on a vehicle.
- Vehicles UE100 to 102 may be mounted in an in-vehicle processing unit (for example, a car navigation system).
- the vehicle UEs 100 to 102 execute the V2I application to support the V2I service.
- UEs 100-102 may support other V2X services, namely V2V service or V2P service or both.
- RSUs 120 and 121 are installed on the roadside. In the example of FIG. 1, the RSU 120 is installed near the intersection 110.
- the RSUs 120 and 121 are not limited, but each may implement Prose-enabled UE, and may perform ProSe communication with the vehicle UEs 100 to 102 in order to provide the V2I service.
- the RSUs 120 and 121 may operate as ProSe UE-to-Network Relay (i.e.,. Relay UE).
- ProSe UE-to-Network Relay mainly relays traffic (downlink and uplink) between a UE out of coverage (remote UE) and the network.
- the RSUs 120 and 121 communicate with a base station (eNB) 130 in the cellular communication network via a wireless connection, and further communicate with a server 140 (e.g., a ITS server or TSS) via the eNB 130.
- eNB base station
- server 140 e.g., a ITS server
- Proximity-based services defined in 3GPP Release 12 is an example of D2D communication.
- the D2D communication includes at least one of direct communication (Direct Communication) and direct discovery (Direct Discovery).
- Direct Communication direct communication
- Direct Discovery direct discovery
- a radio link between UEs used for direct communication or direct discovery is called a PC5 interface or a side link. Therefore, ProSe can be said to be a general term for communication (or service) using at least Sidelink.
- the side link may be used for communication between the RSU 120 and the UE 100 or 101 operating as a UE or a Relay UE, and communication between two or more UEs.
- the side link transmission uses the same frame structure as the Long Term Evolution (LTE) frame structure defined for the uplink and downlink, and a subset of uplink resources in the frequency and time domain. Is used.
- the UE performs side link transmission using single carrier frequency division multiplexing (Single Carrier Frequency Division Multiple Access (SC-FDMA)) similar to the uplink.
- SC-FDMA Single Carrier Frequency Division Multiple Access
- the server 140 communicates with the UEs 100 to 102 and the RSUs 120 and 121 that support the V2X service. More specifically, the server 140 communicates with a V2X application executed in each of the UEs 100 to 102 and the RSUs 120 and 121 at an application layer (application level) via a cellular communication network including the base station 130.
- the reference point between the UE 100-102 and the server 140 may depend on the user plane of the cellular communication network, and the signaling and data between the UE 100-102 and the server 140 are on the user plane. May be transferred.
- the reference point between RSUs 120 and 121 and server 140 may depend on the user plane of the cellular communication network.
- the server 140 may be an ITS server or a TSS. For example, in response to receiving report information indicating the occurrence of some accident from the RSU 120, the server 140 notifies the RSUs (eg, RSU 121) near the RSU 120 that the accident has occurred in the area managed by the RSU 120. May be.
- the RSUs eg, RSU 121
- the UEs 100-102 may communicate with the V2X controller 150 via the base station 130 (and core network) to utilize the V2X service provided by the cellular communication network.
- RSUs 120 and 121 operating as UEs may also communicate with V2X controller 150 via base station 130 (and core network).
- the V2X controller 150 provides a logical function used for operations related to a cellular communication network (i.e., “Public Land Mobile Mobile Network (PLMN)) necessary for the V2X service.
- PLMN Public Land Mobile Mobile Network
- the V2X controller 150 may perform authentication or authorization of the UEs 100 to 102 for the V2X service.
- the V2X controller 150 may authenticate or authorize the RSUs 120 and 121 that operate as the UE.
- the V2X controller 150 may be referred to as a V2X function entity.
- the reference point or interface between the UEs 100-102 (and RSUs 120 and 121) and the server 140 may depend on the user plane of the cellular communication network, and the UEs 100-102 (and RSUs 120 and 121) and the server Signaling and data to and from 140 may be transferred on the user plane.
- FIG. 2 shows another configuration example of the wireless communication system according to some embodiments including the first embodiment.
- each of the RSUs 220 and 221 operates as a base station (eNB).
- eNB base station
- the server 140 may be co-located in the same site together with the eNB 130 or the RSU 220 or 221 operating as the eNB.
- a server is called a Mobile Edge Computing (MEC) server.
- MEC Mobile Edge Computing
- the server 140 is located at a remote site geographically distant from the site of the eNB 130 (or RSU 220 or 221), and one or more entities (eg, Mobility Management Entity, Packet Data) in the cellular communication network.
- You may communicate with eNB130 via Network-Gateway (P-GW) and Serving-Gateway (S-GW).
- P-GW Network-Gateway
- S-GW Serving-Gateway
- FIG. 3 is a diagram illustrating an example of architecture / deployments of a wireless communication system according to some embodiments including the first embodiment.
- RSUs 120 and 121 have a UE function in one implementation
- RSU 220 has an eNB function in another implementation. That is, in some implementations, a UE (e.g., UE 100) supporting a V2X service can communicate with the server 140 via a path 361 passing through the RSU 120 and the eNB 130 operating as a UE. Additionally or alternatively, in some implementations, the UE (eg, UE 100) communicates directly with the eNB 130 and communicates with the server 140 without going through the RSU 120, as shown by path 362 in FIG.
- a UE e.g., UE 100
- UE eg, UE 100
- RSU 220 operating as an eNB
- server 140 communicates with server 140 via RSU 220.
- the communication 351 between the RSU 120 operating as the UE and the eNB 130 may use a dedicated carrier frequency band f1 reserved for the V2X service.
- the communication 351 may use a shared frequency band (Shared frequency band, Shared spectrum) f2 that is not licensed by any operator or is shared by a plurality of operators. Communication using such a shared frequency is also called Licensed Shared Access (LSA).
- the communication 351 may use the carrier frequency band f3 licensed by the operator of the cellular communication network.
- the communication 352 between the UE 100 and the RSU (UE) 120, the communication 353 between the UE 100 and the eNB 130, and the communication 354 between the UE 100 and the RSU 220 operating as the eNB are also the above-described frequency bands f1 and f2. , And f3 may be used. Further, communication (not shown) between UEs may use any of the frequency bands f1, f2, and f3 described above.
- FIG. 4 is a sequence diagram illustrating a process 400 that is an example of a provisioning procedure.
- the network 410 includes at least the eNB 130 in the configuration example of FIG. 1, and includes the RSU 220 that operates as at least the eNB in the configuration example of FIG. 2.
- the network 410 may further include a V2X controller 150.
- the network 410 transmits V2X support information (V2X Support Information) indicating that the V2X service is supported by the serving network (cellular communication network) including the eNB 130.
- V2X support information is transmitted by the eNB 130 or the RSU 220 operating as the eNB. Further, the V2X support information may be transmitted by an RSU that operates as a UE. In this case, the RSU may broadcast part or all of the V2X support information received from the eNB 130, or may perform groupcast.
- V2X support information includes: (a) availability of V2X service, (b) carrier frequency band used for V2X service, (c) measurement configuration of carrier frequency band used for V2X service (measurement ⁇ configuration), (d) It may indicate at least one of the types of supported V2X services (eg, 2V2V, V2I, V2P) and (e) the transmission power allowed to the wireless terminal for the V2X service. Note that (a) the availability of the V2X service may be implied by transmitting the V2X support information.
- a network identifier e.g., PLMN identity list
- area identifier e.g., V2X area list
- the V2X support information may indicate a radio resource pool used for autonomous resource selection (autonomous resource selection) for V2X service by each UE.
- the radio resource pool is based on one or more V2X service types (eg, V2V, V2I, V2P) included in the V2X service, each R2 V2X operation mode (eg, relay mode, direct mode) operating as a UE,
- a radio resource pool may be included for each V2X service area, for each UE device type (eg, RSU, Vehicle, Pedestrian), or for each preset category (eg, speed, (moving) travel direction, lane).
- the radio resource pool may be set for each carrier frequency band where the V2X service is performed.
- the V2X support information may include synchronization settings for V2X.
- the eNB 130 or RSU (eNB) 220 broadcasts V2X support information in the cell provided by the eNB 130 or RSU (eNB) 220 so that at least a plurality of UEs in the idle state (eg, RRC_IDLE) can receive the V2X support information. May be.
- the eNB 130 or RSU (eNB) 220 may transmit V2X support information on a broadcast control channel (Broadcast Control Channel (BCCH)) carrying System Information Block (SIB).
- BCCH Broadcast Control Channel
- SIB System Information Block
- the eNB 130 or the RSU (eNB) 220 includes a first carrier frequency band (eg, frequency band f3 licensed by a cellular operator) used for cellular communication and a second carrier frequency band (eg, V2X support information may be transmitted in both of the individual frequency bands f1) for V2X.
- a first carrier frequency band eg, frequency band f3 licensed by a cellular operator
- a second carrier frequency band eg, V2X support information may be transmitted in both of the individual frequency bands f1 for V2X.
- information transmitted in one frequency band eg, frequency band f3 licensed to the cellular operator
- the UE 100 may use V2X support information transmitted in the individual frequency band f1 for V2X.
- the RSU (UE) 120 may receive the V2X support information transmitted from the eNB 130 and broadcast or group cast the V2X support information (at least a part thereof) in the individual frequency band f1 for the V2X service. , It may be transferred (relayed) to the UE 100.
- UE100 may use the setting (e.g., the radio
- step 402 of FIG. 4 in response to receiving the V2X support information, the UE 100 or the RSU 120 transmits V2X terminal information indicating that the user is interested in the V2X service, that is, V2X UE information (V2X UE information) to the network 410. .
- the V2X UE information includes (a) that the UE 100 or RSU 120 is interested in the V2X service, (b) that the UE 100 or RSU 120 wants to use the V2X service, and (c) that the UE 100 or RSU 120 supports for the V2X service. (D) the frequency band that the UE 100 or RSU 120 can use for the V2X service, (e) the V2X service type that the UE 100 or RSU 120 is interested in (eg, V2V, V2I, V2P), and (f ) At least one of UE 100 or RSU 120 device type (eg, RSU, Vehicle, Pedestrian) may be indicated.
- the frequency band that the UE 100 or RSU 120 can use for the V2X service e
- the V2X service type that the UE 100 or RSU 120 is interested in eg, V2V, V2I, V2P
- At least one of UE 100 or RSU 120 device type eg, RSU, Vehicle, Pedest
- the V2X UE information may include an RSU indication.
- the RSU indication indicates whether or not the transmission source UE is an RSU.
- the RSU indication may include the type of RSU.
- the type of RSU may indicate the type of road where the RSU is installed (e.g., uphill lane, down lane, underpass, overpass, above ground, underground, general road, or expressway).
- the RSU indication may be transmitted from the Mobility Management Entity (MME) to the eNB (i.e., eNB 130 or RSU (eNB) 220) using an E-RAB SETUP REQUEST message or INITIAL CONTEXT SETUP REQUEST message.
- MME Mobility Management Entity
- the V2X UE information may be transmitted in a procedure for establishing a control connection (e.g., “Radio” Resource “Control” (RRC) “Connection”) with the eNB 130 or the RSU (eNB) 220.
- the UE 100 or the RSU 120 may transmit V2X UE information using RRC Connection Setup Complete message or UE capability Signaling in the RRC connection establishment procedure.
- RSU (UE) 120 transmits V2X UE information (eg, RSU display)
- eNB 130 indicates an S1AP INITIAL UE UE MESSAGE message or E-RAB SETUP RESPONSE message indicating that the message relates to RSU.
- Information eg, RSU Indicator
- RSU Indicator may be transmitted to the MME.
- the network 410 (eg, eNB 130, RSU 220, or V2X controller 150) transmits a V2X configuration (V2X Configuration) to the UE 100 or RSU 120 in response to reception of V2X UE information from the UE 100 or RSU 120.
- V2X configuration may be transmitted using an RRC Connection Reconfiguration message.
- the generation of the V2X setting based on the V2X UE information transmitted from the UE 100 or the RSU 120 may be performed by the RSU 220 operating as the eNB 130 or the eNB, or may be performed by the V2X controller 150.
- UE100 or RSU120 receives the V2X setting transmitted from the network 410, and performs V2X communication according to the V2X setting.
- the V2X configuration is any one of the individual carrier frequency band f1 reserved for the V2X service, the shared frequency band f2 for LSA, and the carrier frequency band f3 licensed to the operator of the cellular communication network. May be sent. Further, the V2X setting may be transmitted from the RSU 120. For example, the RSU (UE) 120 may receive the V2X setting transmitted from the eNB 130, and may group-cast the V2X setting (at least a part thereof) in the individual frequency band f1 for the V2X service, or transfer it to the UE 100. (Relay) may be used.
- the V2X setting may indicate a measurement setting of the carrier frequency band used for the V2X service.
- the V2X configuration may include a radio resource configuration for the V2X service.
- the radio resource setting may include one or both of a data radio bearer (DRB) setting and a signaling radio bearer (SRB) setting.
- the DRB configuration may include at least one of the elements listed below: -Physical Multicast Channel (PMCH) settings for Multimedia Broadcast / Multicast Service (MBMS); ⁇ Setting of Physical Downlink Shared Channel (PDSCH) for Single Cell Point to Multi-point (SC-PTM); • Logical Channel ID (LCID); and • E-UTRAN Radio Access Bearer (E-RAB) identity.
- PMCH Physical Multicast Channel
- PDSCH Physical Downlink Shared Channel
- SC-PTM Logical Channel ID
- E-RAB E-UTRAN Radio Access Bearer
- the V2X configuration may indicate a radio resource pool used for spontaneous resource selection for the V2X service by the UE 100 or the RSU 120.
- the V2X configuration may indicate allocation of dedicated radio resources for the V2X service for the UE 100 or the RSU 120.
- the network 410 responds to receiving from the RSU 120 V2X2UE information including an RSU indication that the source UE is an RSU, and a V2X setting indicating an allocation of radio resources reserved for the RSU May be sent to the RSU 120.
- the network 410 is reserved for the RSU in response to receiving the notification indicating that the target UE is the RSU from the higher-level device (eg, MME) of the network 410 to the lower-level device (eg, eNB).
- the V2X setting indicating the assigned radio resource may be transmitted to the RSU 120.
- the network 410 can distinguish the RSU 120 operating as a UE from the normal UE 100, and operates as a UE with a radio resource (eg, frequency) different from the radio resource (eg, frequency) allocated to the normal UE 100. Can be assigned to the RSU 120.
- a radio resource eg, frequency
- the network 410 may transmit an RSU configuration (RSU configuration) indicating how the RSU 120 should operate as an RSU to the RSU 120.
- the RSU setting may be transmitted in an RRC Connection Reconfiguration message.
- the RSU configuration may include at least a part of the V2X configuration.
- the RSU configuration is configured so that the RSU 120 should send a V2X report message to the network (eg, ⁇ eNB) as a Relay UE or the network (eg, eNB) in response to the RSU 120 receiving a V2V message as a V2X UE. Whether to send a V2X report message may be indicated to RSU 120 either implicitly or explicitly.
- the RSU 120 may determine whether or not the RSU setting includes radio resource setting information (e.g. Radio Resource Configuration) necessary to operate as a Relay UE. For example, if the radio resource setting information is included, the RSU 120 may operate as a Relay UE, and if the radio resource setting information is not included, the RSU 120 may operate as a V2V UE. Further, when explicitly indicated, the RSU setting may indicate an RSU operation mode. The operation mode may be, for example, Relay UE mode, V2V UE mode, or the like.
- radio resource setting information e.g. Radio Resource Configuration
- V2X SA may be defined in any of the individual carrier frequency band f1 reserved for V2X service, the shared frequency band f2 for LSA, and the carrier frequency band f3 licensed to the operator of the cellular communication network.
- the cell may be defined in the frequency band f3, and V2X SA may be defined in the frequency band f1 or f2.
- V2X SA may be defined independently of the cell or may be defined in association with the cell.
- V2X SA there may be multiple V2X SAs within a single cell, or there may be one V2X ⁇ SA that spans multiple cells (that is, at least partially covers each of the multiple cells). May be.
- one V2X SA may be defined by one cell or a combination of a plurality of cells.
- the UE may continue without interrupting the V2X service, or the cell reselection or handover is being performed. Will be interrupted, but may resume as soon as this is complete.
- V2X SA can be considered as a “Valid area” of V2X settings.
- V2X SA information (eg, V2X SA Index (ID)) may be transmitted as one of the information elements (IE) included in the V2X configuration, or transmitted in a message or signaling different from the V2X configuration. Also good.
- the eNB 130 or the RSU (eNB) 220 may transmit the V2X setting in the frequency band f3, and V2X2SA information may be included in the V2X setting.
- the RSU (UE) 120 may further transmit V2X2SA information in the frequency band f1 or f2.
- the RSU (UE) 120 may broadcast or group cast the V2X SA information, or may forward (relay) the information to the UE 100.
- provisioning necessary for the UE 100 or the RSU 120 operating as the UE to start the V2X service can be performed.
- the UE 100 may perform a handover from a source cell provided by the eNB 130S to a target cell provided by the eNB 130T.
- the UE 100 may perform a handover from the source cell provided by the RSU (eNB) 220 to the target cell provided by the RSU (eNB) 221.
- FIG. 5 is a sequence diagram showing a process 500 that is an example of a handover procedure according to the present embodiment.
- UE100 is connected to source eNB130S (or RSU220), and is performing V2X service (V2X communication).
- V2X communication V2X communication
- UE100 transmits a measurement report to source eNB130S (or RSU220). The measurement report is transmitted when the measurement value by the UE 100 matches a predetermined handover event condition.
- the source eNB 130S determines the handover of the UE 100 based on the measurement report, and sends a handover request including a V2X indication (V2X indication) to the target eNB 130T (or RSU 221).
- V2X indication V2X indication
- the V2X display indicates that the UE 100 is interested in the V2X service, is permitted to use the V2X service, has been authenticated for the V2X service, and has been approved for the V2X service. At least one is shown.
- the target eNB 130T (or RSU 221) sends a handover response (Handover Request ACK) indicating acceptance of the handover to the source eNB 130S (or RSU 220).
- the handover response includes the V2X setting related to the target cell provided by the target eNB 130T (or RSU 221).
- the source eNB 130S (or RSU 220) transmits a handover command (RRC Connection Reconfiguration message) including V2X settings related to the target cell in order to instruct the UE 100 to perform handover to the target cell.
- the V2X configuration may include V2X service provided in the target cell, or V2X service area information (e.g., V2X SA Index (ID)) included (or included) in the target cell.
- V2X SA Index ID
- step 506 the UE 100 switches to the target eNB 130T (or RSU 221) in response to reception of the handover command (RRC Connection Reconfiguration message). That is, the UE 100 performs a random access procedure to the target eNB 130T (or RSU 221) to establish synchronization with the target cell, and sends a handover confirmation (Handover Confirm) message (RRC Connection Reconfiguration Complete message) to the target eNB 130T (or RSU 221). Send.
- RRC Connection Reconfiguration message a handover confirmation (Handover Confirm) message
- step 507 the UE 100 transmits V2X UE information to the target eNB 130T (or RSU 221).
- the V2X50UE information of the UE 100 may be sent from the source eNB 130S (or RSU 220) to the target eNB 130T (or RSU 221) in Step 503. In this case, transmission of V2X UE information in step 507 may be omitted.
- step 508 the UE 100 performs V2X service (V2X communication) in the target cell provided by the target eNB 130T (or RSU 221).
- V2X service V2X communication
- the source eNB 130S (or RSU 220) is configured to send the V2X indication (V2X indication) related to the UE 100 to the target eNB 130T (or RSU 221) in the handover preparation procedure (ie, step 503).
- the target eNB 130T (or RSU 221) accepts the handover request including the V2X indication (V2X indication)
- the target eNB 130T sends the V2X setting of the target cell to the source eNB 130S (or RSU 220) in the handover preparation procedure (ie, step 504). It is configured as follows. Therefore, according to the handover procedure according to the present embodiment, the UE 100 can continue the V2X service even after the handover.
- the UE 100 may continue the V2X service even during the handover. For example, when the same V2X service is provided in the target cell (or eNB 130T) and the source cell (or eNB 130S) for handover, or when the target cell and the source cell are included in the same V2X service area (V2X SA), the UE 100 V2X service may be continued.
- V2X SA V2X service area
- FIG. 6 shows a first example of message transfer.
- the RSU (UE) 120 generates V2X report information 670 based on the notification 660 in response to receiving the notification 660 from the vehicle UE 100, and the generated V2X report information 670. Is sent to the server 140 via the eNB 130.
- the RSU (UE) 120 may analyze (or detect) the content of the notification 660 in the application layer and generate V2X report information 670 including the content of the notification 660.
- the RSU (UE) 120 may transmit the V2X report information 670 when the content of the notification 660 satisfies a predetermined condition (for example, when the content of the notification 660 relates to a predetermined category, group, or service). .
- the RSU (UE) 120 may use the layer 2 header (eg, Medium Access Control (MAC) header) used for sending the notification 660 to indicate the content type (eg, category, group, or Service) and V2X report information 670 may be transmitted when a predetermined content type is detected.
- layer 2 header eg, Medium Access Control (MAC) header
- MAC Medium Access Control
- the notification 660 may be, for example, a message regarding an emergency stop (emergency stop) or an accident of the vehicle on which the UE 100 is mounted, a message regarding the driving state of the vehicle, or a surrounding road condition (eg, traffic jam, weather, accident, obstacle on the road) ), But is not limited thereto.
- the UE 100 may include a V2V message received from another vehicle (UE) via V2V communication or a message derived from the V2V message in the notification 660.
- the notification 660 may be a V2V message transmitted from the UE 100 to another (unspecified) UE, and the RSU (UE) 120 may receive the V2V message as the notification 660.
- the notification 660 may be an individual message (eg, Uu UL) from the UE 100 to the RSU (UE) 120, and the RSU (UE) 120 may receive the individual message as the notification 660. .
- the RSU (UE) 120 may autonomously generate the V2X report information 670 without depending on the reception of the notification 660 from the vehicle UE100.
- the RSU (UE) 120 monitors the road conditions (eg, traffic jam, weather, accidents, obstacles on the road) in the management area using sensors such as cameras and meteorometers, and V2X based on the monitoring results. Report information 670 may be generated.
- the RSU (UE) 120 may transmit the V2X report information 670 to the server 140 on the user plane (U-plane). In this case, the eNB 130 may simply (transparently) transfer the V2X report information 670. Alternatively, in some implementations, the RSU (UE) 120 may transmit the V2X report information 670 on the control plane (C-plane). In this case, in response to reception of the V2X report information 6700 from the RSU (UE) 120, the eNB 130 generates a V2X report message (V2X report message) including the V2X report information 670, and generates the generated V2X report message. It may be transmitted to the server 140. The eNB 130 may transmit the V2X report message on the control plane (C-plane) or the user plane (U-plane).
- V2X report message V2X report message
- the server 140 In response to receiving the V2X report information 670 from the RSU (UE) 120, the server 140 generates a V2X control message 680 based on the V2X report information 670.
- the V2X control message 680 may include, for example, a warning regarding road conditions (e.g., occurrence of dredging accident or traffic jam), or detour guidance.
- the server 140 transmits the V2X control message 680 so that a plurality of vehicles UE including the vehicle UEs 100 to 102 can receive the V2X control message 680. In the example of FIG.
- the V2X control message 680 is transmitted from the server 140 to the RSUs (UE) 120 and 121 via the eNB 130, and is transmitted to the vehicle UEs 100 to 102 by each RSU (UE).
- Each RSU may transmit the V2X control message 680 to each UE by unicast, or may transmit the V2X control message 680 to a plurality of UEs by groupcast, multicast, or broadcast.
- the group cast referred to here is, for example, communication in which the receiving side (eg, UE) determines whether or not the information is to be received by a predetermined filtering process, and when the information is to be received, the information is restored. May be.
- the predetermined filtering may include, for example, the UE restoring the group identifier inserted in the layer 2 header and determining whether it is a group identifier to be received.
- the group identifier may be set in advance on the reception side (e.g., UE) or may be notified from the transmission side (e.g., eNB, application server). Further, the group identifier may be information indicating a predetermined group (e.g., UE group) or V2X SA Index (ID).
- the second example shown in FIG. 7 shows a delivery route of the V2X control message 680 that is different from the delivery route shown in FIG.
- the V2X control message 680 is transmitted directly from the eNB 130 to the vehicles UE 100 to 102 without passing through the RSU (UE) 120 and 121.
- the eNB 130 may broadcast / multicast the V2X control message 680 so that a plurality of UEs located in a cell provided by the eNB 130 can be received.
- the eNB 130 may transmit the V2X control message 680 on the user plane (U-plane). Specifically, the eNB 130 may transmit the V2X control message 680 using a broadcast bearer, a multicast bearer, or a point-to-multipoint (PTM) bearer.
- the V2X control message 680 may be transmitted on a data radio bearer for carrying MBMS data, that is, MBMS Radio Bearer (MRB) or Point-to-Multipoint (PTM) Radio Bearer.
- MRB MBMS Radio Bearer
- PTM Point-to-Multipoint Radio Bearer
- the eNB 130 may transmit the V2X control message 680 on the control plane (C-plane).
- the eNB 130 may transmit a V2X control message 680 on a broadcast control channel (Broadcast Control Channel (BCCH)) carrying a System Information Block (SIB).
- BCCH Broadcast Control Channel
- SIB System Information Block
- PWS Public Warning System
- EPS Evolved Packet System
- 3GPP is an Earthquake Tsunami Warning System (ETWS) used in Japan, Commercial Alert System (CMAS) used in North America, Korean Public Alert System (KPAS) used in South Korea, and EU used in European countries.
- -ALERT is standardized.
- warning messages are transmitted in SIB 10 and SIB 11.
- the V2X control message 680 may be transmitted from the server 140 to the eNB 130 via the MME.
- the V2X control message may be transmitted by a WRITE-REPLACE WARNING REQUEST message.
- FIG. 8 shows a third example of message transfer.
- the RSUs 120 and 121 operate as ProSe UE-to-Network Relay (i.e., Relay UE).
- the RSUs 120 and 121 that operate as ProSe-UE-to-Network (Relay (Relay UE) are transmitted without terminating the application layer of the vehicle UE100 (ProSe Remote UE). Therefore, in the example of FIG. 8, the RSU 100 transfers the V2X report information 870 of the application layer received from the vehicle UE 100 to the eNB 130. That is, the V2X report information 870 from the vehicle UE 100 is relayed by the RSU 120 and the eNB 130 as the Relay UE, and finally reaches the server 140.
- the server 140 In response to receiving the V2X report information 870, the server 140 generates a V2X control message 880 and transmits it to a plurality of UEs 100 to 102.
- the V2X control message 880 may be transmitted to the plurality of UEs 100 to 102 via the eNB 130 and the RSU 120 or 121.
- the V2X control message 880 may be transmitted directly from the eNB 130 to the plurality of UEs 100 to 102 without passing through the RSUs 10 and 121.
- FIG. 9 shows a fourth example of message transfer.
- each of the RSUs 220 and 221 operates as a base station (eNB).
- the RSU (eNB) 220 In response to receiving the notification 960 from the vehicle UE 100, the RSU (eNB) 220 generates V2X report information 970 based on the notification 960, and sends the generated V2X report information 970 to the server 140.
- the notification 960 may be an individual message (e.g., Uu UL) from the UE 100 to the RSU (eNB) or a V2V message.
- the RSU (eNB) 220 may transmit the V2X report information 970 on the control plane (C-plane) or the user plane (U-plane).
- the server 140 In response to receiving the V2X report information 970 from the RSU (eNB) 220, the server 140 generates a V2X control message 980 based on the V2X report information 970. Similar to the examples of FIGS. 6 and 7, the server 140 transmits the V2X control message 980 so that a plurality of vehicles UE including the vehicle UEs 100 to 102 can receive the V2X control message 980.
- the V2X control message 980 is transmitted from the server 140 to the RSU (eNB) 220 and 221 and is transmitted to the vehicle UEs 100 to 102 by each RSU (eNB).
- RSU (eNB) 220 and 221 may transmit the V2X control message 980 on the U-plane or on the C-plane, similarly to the eNB 130 shown in FIG.
- FIGS. 6 to 9 show examples in which V2X control messages 680, 880, and 980 are received by a plurality of vehicle UEs 100 to 102.
- V2X control messages 680, 880, and 980 may be received by a pedestrian (pedestrian UE).
- different V2X control messages for the vehicle UE and the pedestrian UE may be transmitted in different transmission forms (e.g., U-plane, C-plane).
- any of the three routes 361, 362, and 363 shown in FIG. 3 may be used for transferring a message from the vehicle UE 100 to the server 140.
- any of the three routes 361, 362, and 363 shown in FIG. 3 may be used for message transfer from the server 140 to the vehicle UE 100.
- the eNB 130 transmits the V2X report information 670 to the inter-base station interface (eg, X2 interface). ) May be forwarded to RSU (eNB) 220 via. Further, the eNB 130 may transfer the V2X control message 680 to the RSU (eNB) 220 via the inter-base station interface (e.g., X2 interface).
- the inter-base station interface e.g., X2 interface
- FIG. 10 is a block diagram illustrating a configuration example of the eNB 130.
- the RSU 220 operating as an eNB may also have a configuration similar to the configuration of FIG.
- the eNB 130 includes an RF transceiver 1001, a network interface 1003, a processor 1004, and a memory 1005.
- the RF transceiver 1001 performs analog RF signal processing to communicate with UEs.
- the RF transceiver 1001 may include multiple transceivers.
- RF transceiver 1001 is coupled to antenna 1002 and processor 1004.
- the RF transceiver 1001 receives modulation symbol data (or OFDM symbol data) from the processor 1004, generates a transmission RF signal, and supplies the transmission RF signal to the antenna 1002. Further, the RF transceiver 1001 generates a baseband received signal based on the received RF signal received by the antenna 1002, and supplies this to the processor 1004.
- the network interface 1003 is used to communicate with network nodes (e.g., other eNBs, Mobility Management Entity (MME), Serving Gateway (S-GW), and TSS or ITS server).
- the network interface 1003 may include, for example, a network interface card (NIC) compliant with IEEE 802.3 series.
- the processor 1004 performs data plane processing including digital baseband signal processing for wireless communication and control plane processing.
- the digital baseband signal processing by the processor 1004 may include signal processing of a PDCP layer, an RLC layer, a MAC layer, and a PHY layer.
- the signal processing by the processor 1004 may include GTP-U / UDP / IP layer signal processing at the X2-U interface and the S1-U interface.
- the control plane processing by the processor 1004 may include processing of the X2AP protocol, the S1-MME protocol, and the RRC protocol.
- the processor 1004 may include a plurality of processors.
- the processor 1004 includes a modem processor (eg, DSP) that performs digital baseband signal processing, a processor that performs signal processing of the GTP-U / UDP / IP layer in the X2-U interface and the S1-U interface (eg, DSP) and a protocol stack processor (eg, CPU or MPU) that performs control plane processing may be included.
- DSP modem processor
- a processor that performs signal processing of the GTP-U / UDP / IP layer in the X2-U interface and the S1-U interface eg, DSP
- a protocol stack processor eg, CPU or MPU
- the memory 1005 is configured by a combination of a volatile memory and a nonvolatile memory.
- the memory 1005 may include a plurality of physically independent memory devices.
- the volatile memory is, for example, Static Random Access Memory (SRAM), Dynamic RAM (DRAM), or a combination thereof.
- the non-volatile memory is a mask Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, hard disk drive, or any combination thereof.
- Memory 1005 may include storage located remotely from processor 1004. In this case, the processor 1004 may access the memory 1005 via the network interface 1003 or an I / O interface not shown.
- the memory 1005 may store a software module (computer program) including an instruction group and data for performing processing by the eNB 130 described in the plurality of embodiments described above.
- the processor 1004 may be configured to perform the processing of the eNB 130 described in the above-described embodiment by reading the software module from the memory 1005 and executing the software module.
- FIG. 11 is a block diagram illustrating a configuration example of the RSU 120 that operates as a UE (or a Relay UE).
- the UEs 101 to 102 may also have a configuration similar to the configuration in FIG.
- Radio-frequency (RF) transceiver 1101 performs analog RF signal processing to communicate with eNB 130. Analog RF signal processing performed by the RF transceiver 1101 includes frequency up-conversion, frequency down-conversion, and amplification.
- RF transceiver 1101 is coupled with antenna 1102 and baseband processor 1103. That is, the RF transceiver 1101 receives modulation symbol data (or OFDM symbol data) from the baseband processor 1103, generates a transmission RF signal, and supplies the transmission RF signal to the antenna 1102. Further, the RF transceiver 1101 generates a baseband received signal based on the received RF signal received by the antenna 1102 and supplies this to the baseband processor 1103.
- modulation symbol data or OFDM symbol data
- the baseband processor 1103 performs digital baseband signal processing (data plane processing) and control plane processing for wireless communication.
- Digital baseband signal processing consists of (a) data compression / decompression, (b) data segmentation / concatenation, (c) ⁇ transmission format (transmission frame) generation / decomposition, and (d) transmission path encoding / decoding.
- E modulation (symbol mapping) / demodulation
- IFFT Inverse Fast Fourier Transform
- control plane processing includes layer 1 (eg, transmission power control), layer 2 (eg, radio resource management, hybrid automatic repeat request (HARQ) processing), and layer 3 (eg, attach, mobility, and call management). Communication management).
- the digital baseband signal processing by the baseband processor 1103 includes signal processing of Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, MAC layer, and PHY layer. But you can. Further, the control plane processing by the baseband processor 1103 may include Non-Access Stratum (NAS) protocol, RRC protocol, and MAC ⁇ CE processing.
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Stratum
- PHY Packet Data Convergence Protocol
- the control plane processing by the baseband processor 1103 may include Non-Access Stratum (NAS) protocol, RRC protocol, and MAC ⁇ CE processing.
- NAS Non-Access Stratum
- the baseband processor 1103 includes a modem processor (eg, Digital Signal Processor (DSP)) that performs digital baseband signal processing and a protocol stack processor (eg, Central Processing Unit (CPU) that performs control plane processing, or Micro Processing Unit. (MPU)).
- DSP Digital Signal Processor
- protocol stack processor eg, Central Processing Unit (CPU) that performs control plane processing, or Micro Processing Unit. (MPU)
- CPU Central Processing Unit
- MPU Micro Processing Unit.
- a protocol stack processor that performs control plane processing may be shared with an application processor 1104 described later.
- the application processor 1104 is also called a CPU, MPU, microprocessor, or processor core.
- the application processor 1104 may include a plurality of processors (a plurality of processor cores).
- the application processor 1104 is a system software program (Operating System (OS)) read from the memory 1106 or a memory (not shown) and various application programs (for example, a call application, a web browser, a mailer, a camera operation application, music playback)
- OS Operating System
- various application programs for example, a call application, a web browser, a mailer, a camera operation application, music playback.
- the baseband processor 1103 and the application processor 1104 may be integrated on a single chip, as indicated by the dashed line (1105) in FIG.
- the baseband processor 1103 and the application processor 1104 may be implemented as one System on Chip (SoC) device 1105.
- SoC System on Chip
- An SoC device is sometimes called a system Large Scale Integration (LSI) or chipset.
- the memory 1106 is a volatile memory, a nonvolatile memory, or a combination thereof.
- the memory 1106 may include a plurality of physically independent memory devices.
- the volatile memory is, for example, Static Random Access Memory (SRAM), Dynamic RAM (DRAM), or a combination thereof.
- the non-volatile memory is a mask Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, hard disk drive, or any combination thereof.
- the memory 1106 may include an external memory device accessible from the baseband processor 1103, the application processor 1104, and the SoC 1105.
- Memory 1106 may include an embedded memory device integrated within baseband processor 1103, application processor 1104, or SoC 1105.
- the memory 1106 may include a memory in a Universal Integrated Circuit Card (UICC).
- UICC Universal Integrated Circuit Card
- the memory 1106 may store a software module (computer program) including an instruction group and data for performing processing by the RSU 120 described in the plurality of embodiments described above.
- the baseband processor 1103 or the application processor 1104 may be configured to perform the processing of the RSU 120 described in the above embodiments by reading the software module from the memory 1106 and executing it.
- FIG. 12 is a block diagram illustrating a configuration example of the server 140.
- the V2X controller 150 may also have a configuration similar to the configuration in FIG.
- the server 140 includes a network interface 1201, a processor 1202, and a memory 1203.
- the network interface 1201 is used to communicate with a network node (e.g., eNodeB 130, MME, P-GW).
- the network interface 1201 may include, for example, a network interface card (NIC) compliant with IEEE 802.3 series.
- NIC network interface card
- the processor 1202 reads out and executes software (computer program) from the memory 1203, thereby performing the processing of the server 140 described using the sequence diagram and the flowchart in the above-described embodiment.
- the processor 1202 may be, for example, a microprocessor, MPU, or CPU.
- the processor 1202 may include a plurality of processors.
- the memory 1203 is configured by a combination of a volatile memory and a nonvolatile memory.
- Memory 1203 may include storage located remotely from processor 1202. In this case, the processor 1202 may access the memory 1203 via an I / O interface not shown.
- the memory 1203 is used for storing software module groups.
- the processor 1202 can perform the processing of the server 140 described in the above-described embodiment by reading these software module groups from the memory 1203 and executing them.
- each of the processors included in the UEs 100 to 102, the RSUs 120 and 320, the eNB 130, the server 140, and the V2X controller 150 in the above-described embodiment is the algorithm described with reference to the drawings.
- One or a plurality of programs including a group of instructions for causing a computer to execute the above are executed.
- the program can be stored and supplied to a computer using various types of non-transitory computer readable media.
- Non-transitory computer readable media include various types of tangible storage media (tangible storage medium).
- non-transitory computer-readable media are magnetic recording media (eg flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg magneto-optical discs), Compact Disc Read Only Memory (CD-ROM), CD-ROM R, CD-R / W, semiconductor memory (for example, mask ROM, Programmable ROM (PROM), Erasable PROM (EPROM), flash ROM, Random Access Memory (RAM)).
- the program may also be supplied to the computer by various types of temporary computer-readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves.
- the temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
- each of the RSUs 120 and 121 may operate to periodically send a keep-alive message or a heartbeat message to the eNB 130 or the server 140.
- the eNB 130 or the server 140 fails to receive a keep-alive or heartbeat message from a certain RSU, the eNB 130 or the server 140 may detect the occurrence of the failure of the RSU.
- the above-described embodiment has mainly described LTE / LTE-Advanced and its improvements. However, the above-described embodiments may be applied to other wireless communication networks or systems.
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Abstract
Description
図1は、第1の実施形態を含むいくつかの実施形態に係る無線通信システムの構成例を示している。無線端末(UE)100~102は、車両に搭載される。車両UE100~102は、車載処理ユニット(例えば、カーナビゲーションシステム)内に実装されてもよい。車両UE100~102は、V2IサービスをサポートするためにV2I アプリケーションを実行する。UE100~102は、他のV2Xサービス、つまりV2Vサービス若しくはV2Pサービス又はこれら両方をサポートしてもよい。
・Multimedia Broadcast/Multicast Service(MBMS)のためのPhysical Multicast Channel(PMCH)の設定;
・Single Cell Point to Multi-point(SC-PTM)のためのPhysical Downlink Shared Channel(PDSCH)の設定;
・Logical Channel ID(LCID);及び
・E-UTRAN Radio Access Bearer(E-RAB) identity。
本実施形態では、V2XサービスをサポートするUEのハンドオーバの具体例が説明される。図1に示された例において、UE100は、eNB130Sによって提供されるソースセルからeNB130Tによって提供されるターゲットセルへのハンドオーバを行ってもよい。同様に、図2に示された例において、UE100は、RSU(eNB)220によって提供されるソースセルからRSU(eNB)221によって提供されるターゲットセルへのハンドオーバを行ってもよい。
本実施形態では、V2Xに関するメッセージ転送のいくつかの具体例が説明される。図6は、メッセージ転送の第1の例を示している。図6の例では、RSU(UE)120は、車両UE100からの通知660の受信に応答して、通知660に基づくV2X報告情報(V2X report information)670を生成し、生成されたV2X報告情報670をeNB130を介してサーバ140に送る。
図1に示された構成において、RSU120及び121の各々は、eNB130又はサーバ140に周期的にキープアライブ(keep-alive)メッセージ又はハートビート(heartbeat)メッセージを送信するよう動作してもよい。eNB130又はサーバ140は、あるRSUからのキープアライブ又はハートビートメッセージの受信に失敗した場合に、当該RSUの故障発生を検出してもよい。
120、121 RSU
130 eNB
140 サーバ
150 V2Xコントローラ
220、221 RSU
1001 RFトランシーバ
1004 プロセッサ
1101 RFトランシーバ
1103 ベースバンドプロセッサ
1104 アプリケーションプロセッサ
1202 プロセッサ
1203 メモリ
Claims (27)
- セルラー通信ネットワークで使用される基地局装置であって、
少なくとも1つの無線トランシーバと、
前記基地局装置を含むサービングネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を前記少なくとも1つの無線トランシーバを介して送信し、前記V2Xサポート情報を受信した第1の無線端末から送信されたV2X端末情報の受信に応答してV2X設定を前記第1の無線端末に送信するよう構成された少なくとも1つのプロセッサと、
を備える、基地局装置。 - 前記少なくとも1つのプロセッサは、前記基地局装置によって提供されるセル内において前記第1の無線端末を含む複数の無線端末が前記V2Xサポート情報を受信できるように前記V2Xサポート情報をブロードキャストするよう構成されている、
請求項1に記載の基地局装置。 - 前記少なくとも1つのプロセッサは、セルラー通信に使用される第1の搬送波周波数帯域と前記V2Xサービスに使用される第2の搬送波周波数帯域の両方で前記V2Xサポート情報を送信するよう構成されている、
請求項1又は2に記載の基地局装置。 - 前記V2Xサポート情報は、(a)前記V2Xサービスが利用できること、(b)前記V2Xサービスに使用される搬送波周波数帯域、(c)前記V2Xサービスに使用される前記搬送波周波数帯域の測定設定、(d)サポートされるV2Xサービスのタイプ、及び(e)前記V2Xサービスのために無線端末に許可される送信パワー、のうち少なくとも1つを示す、
請求項1~3のいずれか1項に記載の基地局装置。 - 前記V2Xサポート情報は、前記第1の無線端末を含む複数の無線端末の各々による前記V2Xサービスのための自発的なリソース選択に使用される無線リソースプールを示す、
請求項1~4のいずれか1項に記載の基地局装置。 - 前記無線リソースプールは、前記V2Xサービスに含まれる1又は複数のV2Xサービスのタイプ毎、無線端末のV2X動作モード毎、V2Xサービスエリア毎、無線端末のデバイス・タイプ毎、又は事前設定されたカテゴリ毎の無線リソースプールを含む、
請求項5に記載の基地局装置。 - 前記V2X端末情報は、(a)前記第1の無線端末が前記V2Xサービスに関心があること、(b)前記第1の無線端末が前記V2Xサービスの利用を希望すること、(c)前記第1の無線端末が前記V2Xサービスのためにサポートしている周波数帯域、(d)前記第1の無線端末が前記V2Xサービスのために使用できる周波数帯域、(e)前記第1の無線端末が関心のあるV2Xサービス・タイプ、及び(f)前記第1の無線端末のデバイス・タイプ、のうち少なくとも1つを示す、
請求項1~6のいずれか1項に記載の基地局装置。 - 前記V2X端末情報は、前記第1の無線端末がRoad Side Unit(RSU)であるか否かを示す、
請求項1~7のいずれか1項に記載の基地局装置。 - 前記少なくとも1つのプロセッサは、前記第1の無線端末がRSUである場合に、RSUのために確保された無線リソースの割り当てを示す前記V2X設定を前記第1の無線端末に送信するよう構成されている、
請求項8に記載の基地局装置。 - 前記V2X設定は、前記第1の無線端末による前記V2Xサービスのための自発的なリソース選択に使用される無線リソースプールを示す、
請求項1~9のいずれか1項に記載の基地局装置。 - 前記V2X設定は、前記第1の無線端末に対する前記V2Xサービスのための個別無線リソースの割り当てを示す、
請求項1~9のいずれか1項に記載の基地局装置。 - 前記基地局装置は、前記V2XサービスをサポートするRoad Side Unit(RSU)として動作する、
請求項1~11のいずれか1項に記載の基地局装置。 - 前記少なくとも1つのプロセッサは、前記第1の無線端末に関するハンドオーバ要求をターゲット基地局に送信するよう構成され、
前記ハンドオーバ要求は、前記第1の無線端末が前記V2Xサービスに関心があること、前記V2Xサービスの利用を許可されていること、前記V2Xサービスのために認証済みであること、又は前記V2Xサービスのために承認済みであること、のうち少なくとも1つを示す、
請求項1~12のいずれか1項に記載の基地局装置。 - 前記少なくとも1つのプロセッサは、前記ハンドオーバ要求の送信に応答して、ターゲットセルのV2X設定を示すハンドオーバ応答を前記ターゲット基地局から受信するよう構成されている、
請求項13に記載の基地局装置。 - セルラー通信ネットワークで使用される基地局装置における方法であって、
前記基地局装置を含むサービングネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を送信すること、及び
前記V2Xサポート情報を受信した第1の無線端末から送信されたV2X端末情報の受信に応答してV2X設定を前記第1の無線端末に送信すること、
を備える、方法。 - セルラー通信ネットワークで使用される基地局装置における方法をコンピュータに行わせるためのプログラムを格納した非一時的なコンピュータ可読媒体であって、
前記方法は、
前記基地局装置を含むサービングネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を送信すること、及び
前記V2Xサポート情報を受信した第1の無線端末から送信されたV2X端末情報の受信に応答してV2X設定を前記第1の無線端末に送信すること、
を備える、
非一時的なコンピュータ可読媒体。 - 少なくとも1つの無線トランシーバと、
サービングネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を前記サービングネットワークから前記少なくとも1つの無線トランシーバを介して受信し、前記V2Xサポート情報の受信に応答して前記V2Xサービスに関心があることを示すV2X端末情報を前記サービングネットワークに送信し、前記V2X端末情報の送信に応答して前記サービングネットワークから送信されるV2X設定を受信し、前記V2X設定に従ってV2X通信を行うよう構成された少なくとも1つのプロセッサと、
を備える、無線端末。 - 前記少なくとも1つのプロセッサは、セルラー通信に使用される第1の搬送波周波数帯域と前記V2Xサービスに使用される第2の搬送波周波数帯域の両方で前記V2Xサポート情報を受信するよう構成されている、
請求項17に記載の無線端末。 - 前記V2X端末情報は、(a)前記無線端末が前記V2Xサービスに関心があること、(b)前記無線端末が前記V2Xサービスの利用を希望すること、(c)前記無線端末が前記V2Xサービスのためにサポートしている周波数帯域、(d)前記無線端末が前記V2Xサービスのために使用できる周波数帯域、(e)前記無線端末が関心のあるV2Xサービス・タイプ、及び(f)前記無線端末のデバイス・タイプ、のうち少なくとも1つを示す、
請求項17又は18に記載の無線端末。 - 前記V2X端末情報は、前記無線端末がRoad Side Unit(RSU)であるか否かを示す、
請求項17~19のいずれか1項に記載の無線端末。 - 前記少なくとも1つのプロセッサは、前記無線端末がRSUであることを示す前記V2X端末情報の送信に応答して、RSUのために確保された無線リソースの割り当てを示す前記V2X設定を受信するよう構成されている、
請求項20に記載の無線端末。 - 前記V2X設定は、前記無線端末による前記V2Xサービスのための自発的なリソース選択に使用される無線リソースプールを示す、
請求項17~21のいずれか1項に記載の無線端末。 - 前記V2X設定は、前記無線端末に対する前記V2Xサービスのための個別無線リソースの割り当てを示す、
請求項17~22のいずれか1項に記載の無線端末。 - 無線端末における方法であって、
サービングネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を前記サービングネットワークから受信すること、
前記V2Xサポート情報の受信に応答して前記V2Xサービスに関心があることを示すV2X端末情報を前記サービングネットワークに送信すること、及び
前記V2X端末情報の送信に応答して前記サービングネットワークから送信されるV2X設定を受信し、前記V2X設定に従ってV2X通信を行うこと、
を備える、方法。 - 無線端末における方法をコンピュータに行わせるためのプログラムを格納した非一時的なコンピュータ可読媒体であって、
前記方法は、
サービングネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を前記サービングネットワークから受信すること、
前記V2Xサポート情報の受信に応答して前記V2Xサービスに関心があることを示すV2X端末情報を前記サービングネットワークに送信すること、及び
前記V2X端末情報の送信に応答して前記サービングネットワークから送信されるV2X設定を受信し、前記V2X設定に従ってV2X通信を行うこと、
を備える、
非一時的なコンピュータ可読媒体。 - セルラー通信ネットワークであって、
前記セルラー通信ネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を送信するよう構成された1つ以上の基地局と、
前記V2Xサポート情報を受信した第1の無線端末から送信されたV2X端末情報を受信したことに応答して、V2X設定を前記1つ以上の基地局を介して前記第1の無線端末に送信するよう構成された制御エンティティと、
を備えるセルラー通信ネットワーク。 - セルラー通信ネットワークにおける方法であって、
前記セルラー通信ネットワークによってVehicle-to-Everything(V2X)サービスがサポートされていることを示すV2Xサポート情報を基地局から送信すること、
前記V2Xサポート情報を受信した第1の無線端末から送信されたV2X端末情報を前記1つ以上の基地局を介して受信したことに応答して、V2X設定を前記1つ以上の基地局を介して前記第1の無線端末に制御エンティティから送信すること、
を備える方法。
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| JP2024002810A (ja) * | 2022-06-24 | 2024-01-11 | 株式会社ヨコオ | 信号処理デバイス |
| WO2023248765A1 (ja) * | 2022-06-24 | 2023-12-28 | 株式会社ヨコオ | 信号処理デバイス |
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