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WO2017049978A1 - Procédé, appareil et dispositif de synchronisation d'emplacement d'unité embarquée en communication véhicule à infrastructure routière - Google Patents

Procédé, appareil et dispositif de synchronisation d'emplacement d'unité embarquée en communication véhicule à infrastructure routière Download PDF

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Publication number
WO2017049978A1
WO2017049978A1 PCT/CN2016/087247 CN2016087247W WO2017049978A1 WO 2017049978 A1 WO2017049978 A1 WO 2017049978A1 CN 2016087247 W CN2016087247 W CN 2016087247W WO 2017049978 A1 WO2017049978 A1 WO 2017049978A1
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WIPO (PCT)
Prior art keywords
rsu
obu
location information
lte
dsrc
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Ceased
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PCT/CN2016/087247
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English (en)
Chinese (zh)
Inventor
许辉
马子江
卢忱
王亚英
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ZTE Corp
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ZTE Corp
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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]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • 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
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • 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
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention relates to the field of communications, and in particular to a method, device and device for synchronizing the position of an onboard unit in a vehicle network.
  • the technologies to improve vehicle safety are mainly divided into passive safety technology and active safety technology.
  • Passive safety technology is used to protect people inside and outside the vehicle after accidents.
  • Active safety technology is used to prevent and reduce accidents in vehicles and avoid injuries.
  • Active safety technology is the focus of modern vehicle safety technology development. And trends.
  • the communication-based collision warning system realizes real-time information interaction between the vehicle, the vehicle and the roadside infrastructure by using advanced wireless communication technology and a new generation of information processing technology, and informs each other of the current state (including the position and speed of the vehicle). Acceleration, driving route) and learned road environment information, collaboratively aware of road hazard conditions, timely providing a variety of collision warning information to prevent road traffic safety accidents, and become a new way for countries to solve road traffic safety problems. .
  • V2X Vehicle to Everything
  • V2X Vehicle to Everything
  • V2V Vehicles and vehicles
  • V2V Vehicle to Pedestrian
  • V2I Vehicle to Infrastructure
  • FIG. 1 is a schematic diagram of sending traffic and scheduling information to a vehicle through a network information platform in the related art.
  • the Road Side Unit can receive vehicle requests, ensure that the vehicle accesses the Internet, and has the function of a gateway. In addition, it also has the functions of data calculation, storage, and forwarding.
  • V2R Vehicle to Road Side Unit
  • V2I Vehicle to Road Side Unit
  • the RSU can quickly receive detected vehicles, traffic lights and some road condition information, and process, reorder, and hoove the information to the vehicle.
  • connection with the RSU ensures that the vehicle can access the Internet reliably or in real time or download data stored by the RSU.
  • RSU has short-range coverage (hundreds of meters), cheap, easy to deploy and high data access speed (about l0mbps).
  • the research on RSU access in V2R needs to consider the following factors:
  • the vehicles are in high-speed moving state, usually the speed is 60-70m/s, the RSU coverage is 1000m, and the communication link between the car and the RSU is ideally maintained for 13s ⁇ 16s, so some files cannot be Complete upload/download within one RSU coverage:
  • RSU deployment has no unified management, RSU bandwidth, and limited channel resources, which leads to uneven distribution of RSU and unordered competition behavior of vehicles in order to obtain more bandwidth and channel resources. For example, when there is an overlapping area between multiple RSUs in an urban scenario, if the vehicle accesses the RSU policy improperly, the load between the RSUs will be unbalanced and the network resource utilization will be reduced.
  • DSRC Dedicated Short Range Communication
  • LTE Long Time Evolution
  • 802.11P 802.11P
  • MAC Medium Access Control
  • 1609 1609 is responsible for the upper specification.
  • LTE-based V2X technology has just begun to be discussed and there are no standards.
  • 3GPP is also studying the UE access selection problem when LTE and WLAN coexist: the purpose is to offload the EPS of the evolved packet system; there are two WLAN offload schemes in 3GPP: RAN-assisted WLAN interworking and access network discovery Access Network Selection and Traffic Steering Rules (ANDSF), the former belongs to the RAN solution, and the latter belongs to the NAS solution.
  • the base station sends the RAN assistance parameters to the UE through the SystemInformationBlockType17 or the RRCConnectionReconfiguration message, and the UE implements the selection of the access network by using the RAN assistance parameters and the ANDSF.
  • the network side performs paging according to the TA list of the UE, or in the LTE, the network side can know the location information of the UE, when the OBU is in the LTE When moving between the coverage area and the DSRC coverage area, the LTE Mobility Management Entity (MME)/ The eNB/RSU does not know the location of the OBU and cannot page to the OBU.
  • MME Mobility Management Entity
  • the embodiment of the invention provides a method, a device and a device for synchronizing the position of the on-board unit in the vehicle networking, so as to solve at least the problem that the DSRC RSU and the LTE RSU cannot be mutually paged to the OBU under the RSU coverage in the related art.
  • a method for synchronizing the position of the on-board unit OBU in the vehicle network includes: when the position information is updated by the on-board unit OBU, the first roadside unit RSU acquires the position information reported by the onboard unit OBU; The first RSU synchronizes the location information to the second RSU through the interface.
  • the first RSU and the second RSU each include one of the following: a Long Term Evolution Roadside Unit LTE RSU, and a Dedicated Short Range Communication Roadside Unit DSRC RSU.
  • the manner of the location update includes at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, the OBU by the LTE
  • the RSU covers the movement, periodic location update between the OBUs within the LTE RSU coverage, the OBUs between different BSSs or DSRC RSUs of different ESSs.
  • the acquiring the location information of the onboard unit OBU by the first roadside unit RSU includes: acquiring, by the LTE RSU, the OBU to report to the packet core network EPC network element and/or Or the location information of the application layer network element, and/or the location information directly reported by the OBU, where the location information is a tracking area identifier, or a base station eNB identifier, or a cell identifier, or a user equipment UE. logo.
  • the acquiring the location information of the onboard unit OBU by the first roadside unit RSU includes: the DSRC RSU acquiring the EBU reported to the packet core network EPC network element And the location information of the application layer network element, and/or the location information directly received by the OBU, where the location information is an identifier for identifying an RSU where the OBU is located, the OBU The RSU in which it is located is the DSRC RSU.
  • the identifier for identifying the RSU where the OBU is located includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.
  • the method further includes: the first RSU forwarding the received paging message of the second RSU to the OBU according to the location information.
  • the OBU is in an idle state before the location information is reported.
  • the interface is a direct or indirect interface.
  • a method for synchronizing the position of an on-board unit OBU in a vehicle network includes: when the position information is updated, the on-board unit OBU reports the position information to the first roadside unit RSU.
  • the location information is location information that is synchronized by the first roadside unit RSU to the second RSU; the OBU monitors and/or receives a paging message sent by the RSU according to the location information;
  • the first RSU and the second RSU each include one of the following: a Long Term Evolution Roadside Unit LTE RSU, and a Dedicated Short Range Communication Roadside Unit DSRC RSU.
  • the manner of the location update includes at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, the OBU by the LTE
  • the RSU covers the movement, periodic location update between the OBUs within the LTE RSU coverage, the OBUs between different BSSs or DSRC RSUs of different ESSs.
  • a synchronization device for an on-board unit OBU in a vehicle network which is applied to a first roadside unit RSU side, and includes: an acquisition module, configured to generate location information update at the onboard unit OBU. And acquiring location information of the onboard unit OBU; and the synchronization module is configured to synchronize the location information to the second RSU through a direct or indirect interface.
  • the first RSU and the second RSU each include one of the following: a Long Term Evolution Roadside Unit LTE RSU, and a Dedicated Short Range Communication Roadside Unit DSRC RSU.
  • the manner of the location update includes at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, the OBU by the LTE
  • the RSU covers the movement, periodic location update between the OBUs within the LTE RSU coverage, the OBUs between different BSSs or DSRC RSUs of different ESSs.
  • the acquiring module includes: a first acquiring unit, configured to acquire, by the OBU, the EPC network element and/or the application layer network element reported to the packet core network And the location information, and/or the location information directly reported by the OBU, where the location information is a tracking area identifier, or a base station eNB identifier, or a cell identifier, and a user equipment UE identifier.
  • the acquiring module includes: a second acquiring unit, configured to obtain the EBU reporting to the packet core network EPC network element and/or the application layer network element The location information, and/or the location information directly received by the OBU, where the location information is an identifier for identifying an RSU where the OBU is located, and the RSU where the OBU is located is the DSRC RSU .
  • the identifier for identifying the RSU where the OBU is located includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.
  • the device further includes: a forwarding module, configured to forward the received paging message of the second RSU to the OBU according to the location information.
  • a forwarding module configured to forward the received paging message of the second RSU to the OBU according to the location information.
  • the OBU is in an idle state before the location information is reported.
  • the interface is a direct or indirect interface.
  • a synchronization device for the position of an on-board unit OBU in a vehicle network which is applied to an OBU side of the vehicle-mounted unit, and includes: a reporting module configured to update the location information of the on-board unit OBU
  • the first roadside unit RSU reports the location information, wherein the location information is that the first roadside unit RSU synchronizes the location information with the second RSU; and the processing module is configured to monitor and/or receive the RSU a paging message sent according to the location information;
  • the first RSU and the second RSU each include one of the following: a Long Term Evolution Roadside Unit LTE RSU, and a Dedicated Short Range Communication Roadside Unit DSRC RSU.
  • the manner of the location update includes at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, the OBU by the LTE
  • the RSU covers the movement, periodic location update between the OBUs within the LTE RSU coverage, the OBUs between different BSSs or DSRC RSUs of different ESSs.
  • a synchronization device for an on-board unit OBU position in a vehicle network which is applied to a first roadside unit RSU side, and includes: a receiver configured to generate location information update at the onboard unit OBU. Obtaining location information of the onboard unit OBU; the processor is configured to synchronize the location information to the second RSU through a direct or indirect interface.
  • the device further includes: a transmitter, configured to forward the received paging message of the second RSU to the OBU according to the location information.
  • a transmitter configured to forward the received paging message of the second RSU to the OBU according to the location information.
  • the first roadside unit RSU acquires the location information reported by the onboard unit OBU from the network side entity; the first RSU synchronizes the position to the second RSU through the direct or indirect interface.
  • Information it can be seen that between different RSUs, when the location information of the OBU changes or just accesses the RSU, its location information is reported, and the location information can be synchronized between different RSUs, thereby solving the related art.
  • the problem that the DSRC RSU and the LTE RSU cannot page each other to the OBU under the RSU coverage improves the management effect of the OBU location information in the Internet of Vehicles.
  • FIG. 1 is a schematic diagram of sending traffic and scheduling information to a vehicle through a network information platform in the related art
  • FIG. 2 is a flow chart of a method for synchronizing the position of an onboard unit OBU in a vehicle network according to an embodiment of the present invention
  • FIG. 3 is a flow chart of a method for synchronizing the position of an on-board unit OBU in a car network according to an embodiment of the present invention
  • FIG. 4 is a structural block diagram of a synchronization device for an on-board unit OBU position in a vehicle network according to an embodiment of the present invention
  • FIG. 5 is a block diagram 1 of an optional structure of a device for managing the position of an on-board unit OBU in a vehicle network according to an embodiment of the present invention
  • FIG. 6 is a structural block diagram 2 of a device for managing a position of an on-board unit OBU in a vehicle network according to an embodiment of the present invention
  • FIG. 7 is a structural block diagram of a synchronization device for an on-board unit OBU position in a vehicle network according to an embodiment of the present invention.
  • FIG. 8 is a flow chart of a method for implementing OBU location management in accordance with an alternative embodiment of the present invention.
  • Figure 9 is a schematic illustration of a 1 in accordance with an alternate embodiment of the present invention.
  • FIG. 10 is a schematic illustration of an alternative embodiment 2 in accordance with the present invention.
  • Figure 11 is a schematic illustration of a 3 in accordance with an alternate embodiment of the present invention.
  • Figure 12 is a schematic illustration of a 5 in accordance with an alternate embodiment of the present invention.
  • Figure 13 is a schematic illustration of a 6 in accordance with an alternate embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for synchronizing the position of the onboard unit OBU in the vehicle network according to an embodiment of the present invention. The process includes the following steps:
  • Step S202 When the location information update occurs in the onboard unit OBU, the first roadside unit RSU acquires the location information reported by the onboard unit OBU from the network side entity;
  • Step S204 The first RSU synchronizes the location information to the second RSU through the interface.
  • the first roadside unit RSU acquires the location information reported by the onboard unit OBU from the network side entity; the first RSU passes through the direct or indirect interface.
  • the second RSU synchronizes the location information. It can be seen that when the location information of the OBU changes or just accesses the RSU, the location information of the OBU is reported between different RSUs, and the location information can be synchronized between different RSUs.
  • the problem that the OCR between the DSRC RSU and the LTE RSU cannot be mutually paged to the RSU coverage is solved in the related art, thereby improving the management effect of the OBU location information in the Internet of Vehicles.
  • the synchronization location information involved in this embodiment is that the OBU location information stored in the first RSU and the second RSU are consistent.
  • the first RSU and the second RSU involved in the embodiment include one of the following: a long term evolution roadside unit LTE RSU, and a dedicated short range communication roadside unit DSRC RSU.
  • the manner of location update involved in this embodiment includes at least one of the following: update of the tracking area of the OBU, movement of the OBU between the LTE RSU and the DSRC RSU, coverage of the OBU by the LTE RSU, and coverage of the LTE RSU, and the OBU Mobile, periodic location updates between DSRC RSUs of different BSSs or different ESSs.
  • the OBU reports location information only when the location is updated.
  • the location update includes: TA update of the OBU, coverage of the LTE RSU to the coverage, movement between the LTE RSU and the DSRC RSU, and DSRC RSU of different BSS or different ESSs. Inter-movement, periodic location update. If the OBU moves from within the RSU coverage to the outside of the coverage, the RSU.OBU is generally notified to be in the idle state at the inner edge of the RSU.
  • the manner of acquiring the location information of the onboard unit OBU for the first roadside unit RSU involved in this embodiment may be adopted.
  • the LTE RSU obtains the location information of the EPC network element and/or the application layer network element that the OBU reports to the packet core network, and/or receives the location information directly reported by the OBU, where the location information is the tracking area identifier, or the base station. eNB identity, or cell identity, or user equipment UE identity.
  • the location information involved in this embodiment is, and the network side entity may be a packet core network EPC network element and/or an application layer network element.
  • the manner in which the first roadside unit RSU acquires the location information of the onboard unit OBU may be implemented by: DSRC RSU Obtaining the location information of the EPC network element and/or the application layer network element reported by the OBU, and/or receiving the location information directly reported by the OBU, where the location information is used to identify the identifier of the RSU where the OBU is located, where the OBU is located.
  • the RSU is a DSRC RSU.
  • the identifier for identifying the RSU where the OBU is located includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.
  • the method in this embodiment further involves: the first RSU forwarding the received paging message of the second RSU to the OBU according to the location information.
  • the OBU involved in this embodiment is in an idle state.
  • the interface involved in this embodiment is a direct or indirect interface.
  • FIG. 3 is a flowchart of a method for synchronizing the position of an on-board unit OBU in a vehicle network according to an embodiment of the present invention. As shown in FIG. 3, the steps of the method include:
  • Step S302 When the location information is updated, the onboard unit OBU reports the location information to the first roadside unit RSU, wherein the location information is location information that the first roadside unit RSU synchronizes with the second RSU.
  • Step S304 The OBU monitors and/or receives the paging message sent by the RSU according to the location information.
  • the first RSU and the second RSU involved in this embodiment all include one of the following: a long-term evolution roadside unit LTE RSU, and a dedicated short-range communication roadside unit DSRC RSU.
  • the manner of location update involved in this embodiment includes at least one of the following: an update of the tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, and an OBU coverage by the LTE RSU to the LTE RSU coverage.
  • the OBU moves and periodically updates between different BSSs or DSRC RSUs of different ESSs.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.
  • a device for synchronizing the position of the on-board unit OBU in the vehicle network is also provided, and the device is used to implement the above-mentioned embodiments and preferred embodiments, and the detailed description thereof has been omitted.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 4 is a structural block diagram of a synchronization device for a position of an on-vehicle unit OBU in a vehicle network according to an embodiment of the present invention.
  • the device is applied to a side of a first roadside unit RSU.
  • the device includes: an acquisition module 42.
  • the synchronization module 44 is coupled to the acquisition module 42 and configured to synchronize the location information to the second RSU through the direct or indirect interface.
  • first RSU and the second RSU involved in the apparatus embodiment include one of the following: a long term evolution roadside unit LTE RSU, and a dedicated short distance communication roadside unit DSRC RSU.
  • the manner of the location update includes at least one of the following: an update of the tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, an OBU coverage by the LTE RSU, an LTE RSU coverage, and an OBU in different BSSs. Or movement, periodic location update between DSRC RSUs of different ESSs.
  • the acquiring module is further configured to acquire location information of the OBU from the mobility management entity MME and/or the RSU where the OBU is located, where the location information is a tracking area identifier, or the base station eNB Identification, or cell identity, or user equipment UE identity.
  • the acquiring module 42 is further configured to obtain location information that is reported by the OBU to the packet core network EPC network element and/or the application layer network element, and/or receive the OBU directly reported.
  • Location information where the location information is an identifier for identifying the RSU where the OBU is located, and the RSU where the OBU is located is a DSRC RSU.
  • the identifier for identifying the RSU where the OBU is located includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.
  • the device further includes: a forwarding module 52 coupled to the synchronization module 44 and configured to be The received paging message of the second RSU is forwarded to the OBU according to the location information.
  • the interface involved in this embodiment may be a direct interface or an indirect interface.
  • FIG. 6 is a structural block diagram 2 of a device for managing an OCU position of an on-vehicle unit in a vehicle network according to an embodiment of the present invention.
  • the device is applied to an OBU side of an in-vehicle unit.
  • the device includes: a reporting module 62, configured to be When the location information of the onboard unit OBU is updated, the location information is reported to the first roadside unit RSU, wherein the location information is that the first roadside unit RSU synchronizes the location information with the second RSU; the processing module 64 is coupled to the reporting module 62. Set to monitor and/or receive paging messages sent by the RSU based on location information.
  • the first RSU and the second RSU involved in this embodiment each include one of the following: a long term evolution roadside unit LTE RSU, and a dedicated short range communication roadside unit DSRC RSU.
  • the manner of location update involved in this embodiment Including at least one of: update of tracking area of OBU, movement of OBU between LTE RSU and DSRC RSU, OBU coverage by LTE RSU to LTE RSU coverage, OBU between different BSS or DSRC RSU of different ESS Mobile, periodic location updates.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • FIG. 7 is a structural block diagram of a synchronization device for an on-board unit OBU position in a vehicle network according to an embodiment of the present invention.
  • the device is applied to a first roadside unit RSU side, and the device includes: a receiver 72 configured to occur in an onboard unit OBU.
  • the processor 74 is coupled to the receiver 72 and configured to synchronize the location information to the second RSU through a direct or indirect interface;
  • the transmitter 76 is coupled to the processor 74.
  • the paging message set to receive the received second RSU is forwarded to the OBU according to the location information.
  • the optional embodiment provides a method for implementing OBU location management, including: LTE roadside unit RSU and DSRC RSU acquire OBU location information, and LTE roadside unit RSU and DSRC RSU exchange OBU location information through interface, LTE RSU or The DSRC RSU sends a paging message according to the location of the OBU, and the OBU sends a response message after receiving the paging message within the LTE RSU or DSRC RSU coverage.
  • FIG. 8 is a flowchart of a method for implementing OBU location management according to an optional embodiment of the present invention. As shown in FIG. 8, the steps of the method include:
  • step S801 the OBU reports the location information of the network.
  • the location information of the OBU is stored in the MME, the RSU that provides the coverage area for the DSRC is referred to as the DSRC RSU, and the RSU that provides the coverage area for the LTE is referred to as the LTE RSU.
  • the location of the OBU in the LTE (ie, the OBU is under the LTE coverage) generally uses the tracking area TA list; the location of the OBU in the DSRC (ie, the OBU under the DSRC coverage) generally uses the DSRC RSU identifier indication, and the DSRC RSU identifier includes the following At least one of the following: a Service Set Identifier (SSID), a Basic Service Set Identifier (BSSID), and a Homogenous Extended Service Set Identifier (HESSID).
  • SSID Service Set Identifier
  • BSSID Basic Service Set Identifier
  • HESSID Homogenous Extended Service Set Identifier
  • the location information of each OBU saved in the MME may be: TA list+SSID list
  • the location information of the OBU is obtained by the MME after the OBU reports the network, that is, the location information is reported to the network when the OBU is updated or initially attached.
  • the network involved in the optional embodiment may be : RSU and/or MME where the OBU is located.
  • the UE location information on the MME includes: TA list, SSID/BSSID/HESSID list;
  • the UE location information on the eNB or the RSU includes: a cell ID, an SSID/BSSID/HESSID list;
  • Step S802 the RSU acquires location information of the OBU.
  • the onboard unit OBU is equivalent to the user equipment UE, and the OBU is in an idle state, that is, the OBU resides in the cell, but does not establish an RRC connection with the base station. If the OBU is in the DSRC coverage area, the idle state means that the OBU can only receive the information sent by the RSU and cannot send information to the RSU. If the OBU can receive information sent by the RSU or send information to the RSU, the OBU is not idle. For example, the OBU is connected.
  • the RSU includes: an LTE RSU and/or a DSRC RSU, where the LTE RSU is an RSU capable base station eNB in LTE.
  • the LTE RSU obtains the location information of the OBU through the mobility management entity MME.
  • the location information generally refers to the tracking area TA of the OBU.
  • the DSRC RSU obtains the location information of the OBU according to the prior art. For example, when the OBU communicates with the DSRC RSU, the DSRC RSU saves the OBU.
  • the location information of the OBU in the DSRC is generally indicated by the identifier of the DSRC RSU, and the DSRC RSU identifier includes at least one of the following: SSID, BSSID, HESSID.
  • the location information of the OBU is obtained by the OBU reporting network side, that is, when the OBU is updated or initially attached, the location information is reported to the RSU and/or the MME.
  • Step S803 the location information of the OBU is exchanged between the RSUs.
  • an interface between the RSUs an interface between the LTE RSUs (such as the X2 port), an interface between the LTE RSU and the DSRC RSU, and an interface between the DSRC RSUs.
  • This location information is passed through the interface between the RSUs. There are two cases: 1) the OBU is located in the DSRC coverage, the DSRC RSU sends the OBU location information to the DSRC RSU and/or the LTE RSU with the interface nearby; 2) the OBU is located in the LTE RSU coverage, and the LTE RSU has the DSRC with the interface nearby The RSU and/or LTE RSU sends the location information of the OBU.
  • the interaction of the OBU location information between the RSUs generally occurs when the OBU is initially attached or updated, including: the OBU initiates attach/TAU in LTE, or the OBU enters DSRC coverage from LTE coverage, or the OBU covers from the DSRC. Entering the LTE coverage, or the OBU reselects the new RSU in the DSRC.
  • the OBU reports the location information to the RSUhe and/or the MME, and the location between the RSUs that received the reported location information. Information exchange.
  • Step S804 the LTE RSU sends a paging message.
  • the LTE RSU receives the paging message sent by the MME or the RSU itself needs to send a paging message, such as a system message update or an MT (Mobile Terminated) call.
  • a paging message such as a system message update or an MT (Mobile Terminated) call.
  • the LTE RSU determines that the target OBU is within the LTE RSU coverage area, the LTE RSU sends a paging message within the coverage area; if the LTE RSU determines that the target OBU is not within the LTE RSU coverage area or the target OBU is within the adjacent DSRC RSU coverage, then LTE The RSU first sends a paging message to the DSRC RSU, and the DSRC RSU that receives the paging message sends a paging message in the coverage area.
  • Step S805 the OBU receives the RSU to send a paging message.
  • the OBU detects the required paging message, and the required paging message refers to the paging message being associated with the OBU (such as system message update) or the presence of the OBU identifier in the paging message; if the required paging is detected; Message, then OBU enters one Steps to determine whether it is necessary to establish a connection with the RSU and send a paging response message. For example, for the system message update, the OBU does not need to send a paging response message.
  • the OBU For the MT paging, the OBU needs to establish a connection and send a paging response message; if the OBU is located After the DSRC is received, and the received paging message is sent by the LTE RSU, the DSRC RSU forwards the received paging response message to the LTE RSU through the interface after receiving the paging response message of the OBU.
  • FIG. 9 is a schematic diagram of an optional embodiment of the present invention.
  • the application scenario involved in this embodiment is: an interface between an eNB and a DSRC AP, and an IDLE OBU enters a DSRC coverage (leaving LTE coverage).
  • the OBU reports the information (such as the OBU ID, the original TAI list, the capability, etc.) to the DSRC AP
  • the DSRC AP notifies the eNB that the eNB updates the location information of the OBU through the MME (eg, adds the SSID/BSSID of the AP in the paging area of the OBU).
  • the MME eg, adds the SSID/BSSID of the AP in the paging area of the OBU.
  • HESSID the Home SBC address
  • the OBU When the Idle OBU returns to the LTE coverage, the OBU reports the OBU paging area (such as deleting the SSID/BSSID/HESSID).
  • FIG. 10 is a schematic diagram of a second embodiment of the present invention.
  • the application scenario of the present embodiment is: the DSRC AP accesses the EPC through S2a/S2b/S2c, and there is no direct connection between the eNB and the AP. interface.
  • the Idle OBU enters the DSRC coverage and reports the information to the AP.
  • the AP reports the OBU location to the P-GW through the AC/BAS.
  • the P-GW sends the OBU location information to the corresponding MME.
  • the OBU When the Idle OBU returns to the LTE coverage, the OBU reports the OBU paging area (such as deleting the SSID).
  • Idle OBU also performs periodic location update.
  • the Idle OBU adopts a cycle.
  • the sex/event triggers a location update and sends the updated location information to the relevant MME covered by the LTE.
  • the connected OBU enters the DSRC coverage and may also become an Idle (such as an LTE port inactive). Location update is also required.
  • FIG. 12 is a schematic diagram of a 5 according to an optional embodiment of the present invention.
  • the application scenario involved in this embodiment is: paging in LTE, no paging in DSRC, and in LTE, if If an Idle OBU needs to be queried, the MME searches for the TA list where the OBU is located, and sends a paging message on the TA list. If the OBU is located in the DSRC coverage, consider the following scenario: 1) Scenario 1, an interface exists between the eNB and the DSRC AP.
  • the MME sends a paging message to the eNB (the eNB that connects the DSRC AP), and the eNB forwards the paging message to the AP, and the AP broadcasts the paging message, and the OBU responds after receiving the message.
  • Scenario 2 The DSRC AP accesses the EPC through S2a/S2b/S2c, and there is no direct interface between the eNB and the AP.
  • the MME forwards the paging message to the P-GW, and the P-GW sends the paging message to the AC/BAS->AP through the S2a/b/c interface.
  • the AP broadcasts the paging message, and the OBU responds after receiving the message.
  • FIG. 13 is a schematic diagram of a preferred embodiment of the present invention.
  • the application scenario involved in this embodiment is: in the DSRC coverage, if the OBU is inactive, an LTE-like paging opportunity PO mode may be adopted. Monitor the page or put the paging indicator message in the Beacon message.
  • the invention provides a V2X OBU location management device, comprising:
  • a first receiver configured to receive the report information sent by the OBU and receive the OBU location information and/or the paging message sent by the neighboring RSU or the connected EPC;
  • a first transmitter configured to send a paging message to the OBU 60 and to send an OBU location information and/or a paging message to the neighboring RSU or the connected EPC;
  • the first processor is configured to determine to send a paging message and/or OBU location information by means of a local, or an adjacent RSU, or a connected EPC.
  • the above apparatus is an RSU in LTE and an RSU in DSRC, wherein the RSU in LTE includes: an eNB or a stationary UE.
  • the optional embodiment further provides a V2X OBU location management device, including:
  • a second receiver configured to receive a paging message sent by the RSU
  • a second transmitter configured to send location update information and a paging response message to the RSU
  • the second processor is configured to determine when to transmit location update information and whether to page the response message.
  • the foregoing apparatus is an OBU in the LTE or an OBU in the DSRC, where the OBU in the LTE is a UE or a mobile terminal in the E-UTRAN.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • Step S1 The first roadside unit RSU acquires location information of the onboard unit OBU from the network side entity;
  • Step S2 The first RSU synchronizes the location information to the second RSU through a direct or indirect interface.
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the first roadside unit RSU acquires the location information reported by the onboard unit OBU from the network side entity; the first RSU synchronizes the position to the second RSU through the direct or indirect interface.
  • Information it can be seen that between different RSUs, when the location information of the OBU changes or just accesses the RSU, its location information is reported, and the location information can be synchronized between different RSUs, thereby solving the related art.
  • the problem that the DSRC RSU and the LTE RSU cannot page each other to the OBU under the RSU coverage improves the management effect of the OBU location information in the Internet of Vehicles.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
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Abstract

La présente invention concerne un procédé, un appareil et un dispositif permettant de synchroniser un emplacement d'une unité embarquée (OBU) en communication véhicule à infrastructure routière. Le procédé comprend les étapes suivantes : lorsque des informations d'emplacement d'une OBU changent, une première unité de bord de route (RSU) acquiert des informations d'emplacement rapportées par l'OBU (S202) ; la première RSU synchronise les informations d'emplacement avec une seconde RSU par l'intermédiaire d'une interface (S204). La présente invention résout le problème de l'état de la technique selon lequel une RSU de communication de courte portée dédiée (DSRC) et une RSU de technologie LTE ne peuvent pas se trouver par recherche des OBU couvertes par l'une et l'autre, ce qui permet d'améliorer la gestion d'informations d'OBU en communication véhicule à infrastructure routière.
PCT/CN2016/087247 2015-09-25 2016-06-27 Procédé, appareil et dispositif de synchronisation d'emplacement d'unité embarquée en communication véhicule à infrastructure routière Ceased WO2017049978A1 (fr)

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