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WO2017049977A1 - Method, apparatus, and system for selecting target area, obu, and rsu - Google Patents

Method, apparatus, and system for selecting target area, obu, and rsu Download PDF

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Publication number
WO2017049977A1
WO2017049977A1 PCT/CN2016/087246 CN2016087246W WO2017049977A1 WO 2017049977 A1 WO2017049977 A1 WO 2017049977A1 CN 2016087246 W CN2016087246 W CN 2016087246W WO 2017049977 A1 WO2017049977 A1 WO 2017049977A1
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WO
WIPO (PCT)
Prior art keywords
obu
rsu
dsrc
service
target area
Prior art date
Application number
PCT/CN2016/087246
Other languages
French (fr)
Chinese (zh)
Inventor
许辉
马子江
卢忱
谢玉堂
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017049977A1 publication Critical patent/WO2017049977A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/30Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/304Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for selecting a target area, an OBU, and an RSU.
  • V2X Vehicle to Everything
  • DSRC Dedicated Short Range Communication
  • LTE Long Time Evolution
  • 802.11P is responsible for the physical layer
  • MAC Medium Access Control
  • 1609 is responsible for the upper layer specification.
  • LTE-based V2X technology has just begun to be discussed and there are no standards.
  • the embodiment of the invention provides a method, a device and a system for selecting a target area of an onboard unit OBU, so as to at least solve the problem that the vehicle network service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area in the related art. problem.
  • a method for selecting a target area of an onboard unit OBU including: an onboard unit OBU or a roadside unit RSU preferentially selecting a target area for supporting a vehicle network V2X service access according to a state of the OBU
  • the state includes at least one of the following: an idle state, a connected state.
  • the target area supporting the access to the Internet service is selected according to the state of the OBU according to one of the following preset policies: when the OBU is in an idle state, the OBU is sent according to the received roadside unit RSU.
  • the mobility management parameter meets the first preset condition
  • the first area supporting the Internet of Vehicles service is selected as the target area; when the OBU is in the connected state, the RSU satisfies the information according to the received information reported by the OBU.
  • the second preset condition the second area supporting the Internet of Vehicles service is selected as the target area.
  • the mobility management parameter includes at least one of: a reference signal received power RSRP threshold, a reference signal received quality RSRQ threshold, a frequency priority, a cell reselection threshold, a dedicated short-range communication DSRC channel utilization, a dedicated short distance Communication backhaul route DSRC backhaul uplink/downlink rate, DSRC beacon received signal strength indication RSSI, DSRC identification.
  • the RSRP threshold and the RSRQ threshold are used for measurement of an LTE coverage cell; the frequency priority and the cell reselection threshold are used for long term evolution LTE inter-cell reselection; the DSRC channel utilization, The DSRC backhaul uplink/downlink rate and the DSRC beacon received signal strength indication RSSI are used for signal quality measurement of the DSRC coverage area; wherein the DSRC identifier includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, similar extended service set identifier HESSID.
  • the information reported by the OBU includes at least one of: an Internet of Vehicles V2X service identifier that the OBU is receiving or interested in receiving, an capability of the OBU, a measurement report, where the measurement report is The RSU determines if a basis for selection is required.
  • the capabilities of the OBU include at least one of: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, and LTE and DSRC simultaneous reception capabilities.
  • the idle state of the OBU means that the OBU only allows receiving information sent by the RSU and does not allow to send information to the RSU, where the connection state of the OBU means that the OBU allows to receive the RSU to send.
  • the information also allows information to be sent to the RSU.
  • the target area is an LTE coverage area or a DSRC coverage area.
  • the OBU performs information interaction between the source RSU and the target RSU, where the information of the interaction includes at least one of the following: the V2X service identifier information received by the OBU or is of interest, and the OBU receiving or sensing
  • the V2X service configuration information, the OBU motion parameter, and the V2X service resource pool configuration are received by the interest;
  • the OBU motion parameter includes at least one of the following: an OBU motion direction, an OBU position, an OBU motion speed, and an OBU acceleration.
  • the method further includes: the OBU or the RSU according to a frequency priority An area having a high frequency priority is preferentially selected as the target area.
  • a device for selecting a target area of an on-board unit OBU which is applied to an on-board unit OBU or a roadside unit RSU, and includes: a first selection module, configured to preferentially according to a state of the OBU Selecting a target area supporting the access of the Internet of Vehicles V2X service, wherein the status includes at least one of the following: an idle state, a connected state.
  • the selecting module selects, according to one of the following preset policies, a target area that supports access to the Internet service according to the state of the OBU: the selecting module is configured to: when the OBU is in an idle state, When the OBU meets the first preset condition according to the received mobility management parameter sent by the roadside unit RSU, the OBU selects a first area supporting the Internet service as the target area; and the selection module is configured to be connected in the OBU. And when the RSU meets the second preset condition according to the received information reported by the OBU, selecting a second area supporting the Internet of Vehicle service as the target area.
  • the mobility management parameter includes at least one of: a reference signal received power RSRP threshold, a reference signal received quality RSRQ threshold, a frequency priority, a cell reselection threshold, a dedicated short-range communication DSRC channel utilization, and a DSRC backhaul / Downstream rate, DSRC beacon received signal strength indication RSSI, DSRC identification.
  • the RSRP threshold and the RSRQ threshold are used for measurement of an LTE coverage cell; the frequency priority and the cell reselection threshold are used for long term evolution LTE inter-cell reselection;
  • the DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon received signal strength indication RSSI are used for signal quality measurement of the DSRC coverage area;
  • the DSRC identifier 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 information reported by the OBU includes at least one of: an Internet of Vehicles V2X service identifier that the OBU is receiving or interested in receiving, an capability of the OBU, a measurement report, where the measurement report is The RSU determines if a basis for selection is required.
  • the capabilities of the OBU include at least one of: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, and LTE and DSRC simultaneous reception capabilities.
  • the idle state of the OBU means that the OBU only allows receiving information sent by the RSU and does not allow to send information to the RSU, where the connection state of the OBU means that the OBU allows to receive the RSU to send.
  • the information also allows information to be sent to the RSU.
  • the target area is an LTE coverage area or a DSRC coverage area.
  • the OBU performs information interaction between the source RSU and the target RSU, where the information of the interaction includes at least one of the following: the V2X service identifier information received by the OBU or is of interest, and the OBU receiving or sensing
  • the V2X service configuration information, the OBU motion parameter, and the V2X service resource pool configuration are received by the interest;
  • the OBU motion parameter includes at least one of the following: an OBU motion direction, an OBU position, an OBU motion speed, and an OBU acceleration.
  • the apparatus further includes: a second selection module, configured to be based on the frequency priority An area having a high frequency priority is preferentially selected as the target area.
  • a selection system for a target area of an onboard unit OBU including: a roadside unit RSU and an onboard unit OBU, wherein the roadside unit RSU acquires a state of the onboard unit OBU, wherein the state
  • the method includes: an idle state, a connected state; when the OBU is in an idle state, the OBU selects a first region supporting the car networking service according to the first preset condition that the mobile management parameter sent by the received roadside unit RSU meets the first preset condition
  • the RSU selects the second area supporting the Internet of Vehicle service as the target area when the received information reported by the OBU satisfies the second preset condition.
  • a roadside unit RSU including: a first processor, configured to preferentially select a target area supporting the vehicle networking V2X service access according to a state of the onboard unit OBU, where The state includes at least one of the following: an idle state, a connected state.
  • the RSU further includes: a first receiver, configured to receive the information reported by the OBU; the first processor, further configured to: the information reported by the OBU meets a second preset condition, and When the OBU is in a connected state, The second area supporting the car networking service is selected as the target area.
  • an onboard unit OBU including: a second processor, preferentially selecting a target area supporting the access of the vehicle network V2X service according to a state of the onboard unit OBU, wherein the status includes At least one of the following: idle state, connected state.
  • the OBU further includes: a second receiver configured to receive a mobility management parameter sent by the roadside unit RSU; the second processor further configured to meet the second preset condition in the mobility management parameter And when the OBU is in an idle state, selecting a first area supporting the Internet of Vehicles service as the target area.
  • the on-board unit OBU or the roadside unit RSU preferentially selects the target area supporting the access of the vehicle networking service according to the state of the OBU, so that the target area supporting the access of the vehicle networking service can be selected according to different states of the OBU.
  • the method solves the problem that the vehicle networking service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area in the related art, and improves the efficiency of the on-board unit OBU vehicle networking service execution.
  • FIG. 1 is a flowchart of a method of selecting a target area of an onboard unit OBU according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of a device for selecting a target area of an on-board unit OBU according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram of a selection system of a target area of an onboard unit OBU according to an embodiment of the present invention
  • FIG. 4 is a flow diagram of a method of implementing V2X traffic continuity in accordance with an alternate embodiment of the present invention
  • FIG. 5 is a schematic diagram of implementing V2X service continuity when a target cell has only DSRC coverage according to an alternative embodiment of the present invention
  • FIG. 6 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an alternative embodiment of the present invention
  • FIG. 7 is a schematic diagram of implementing V2X service continuity when a target cell has only LTE coverage according to an alternative embodiment of the present invention
  • FIG. 8 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an alternative embodiment of the present invention
  • FIG. 9 is a schematic diagram of implementing V2X service continuity when a DSRC AP is located in an LTE coverage according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of realizing V2X service continuity when switching between DSRCs according to the present embodiment
  • FIG. 11 is a schematic diagram of implementing V2X service continuity when switching between LTEs according to an alternative embodiment of the present invention.
  • FIG. 12 is a block diagram showing the structure of an apparatus for V2X service continuity according to an embodiment of the present invention.
  • FIG. 13 is a block diagram showing the structure of a V2X service continuity apparatus in accordance with an alternative embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for selecting a target area of an on-board unit OBU according to an embodiment of the present invention. As shown in FIG. 1, the flow includes the following steps. :
  • Step S102 The onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the access of the vehicle network V2X service according to the state of the OBU, wherein the state includes at least one of the following: an idle state and a connected state;
  • the onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the access of the vehicle network service according to the state of the OBU, so that the target area supporting the access of the vehicle network service can be selected according to different states of the OBU.
  • the problem that the vehicle networking service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area is solved, and the efficiency of the on-board unit OBU vehicle networking service execution is improved.
  • the target area supporting the access of the car network service may be selected according to one of the following preset policies according to the state of the OBU:
  • Manner 1 When the OBU is in the idle state, the OBU selects the first area supporting the Internet service as the target area when the mobility management parameter sent by the OBU according to the received roadside unit RSU satisfies the first preset condition;
  • the foregoing first preset condition may be that the Uu interface signal quality meets the cell reselection requirement, or the DSRC air interface signal quality meets the cell reselection requirement; and the second The preset condition is that the Uu port measurement report satisfies the handover requirement, or the DSRC air interface measurement report satisfies the handover requirement.
  • the mobility management parameters involved in this embodiment include at least one of: reference signal received power RSRP threshold, reference signal received quality RSRQ threshold, frequency priority, cell reselection threshold, dedicated short-range communication DSRC channel utilization, DSRC Backhaul uplink/downlink rate, DSRC beacon received signal strength indication RSSI, DSRC identification.
  • the RSRP threshold and the RSRQ threshold are used for measurement of the LTE coverage cell; the frequency priority and the cell reselection threshold are used for long-term evolution LTE inter-cell reselection; the DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon reception signal
  • the strength indicator RSSI is used for signal quality measurement of the DSRC coverage area; wherein the DSRC identifier 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 information reported by the OBU in this embodiment includes at least one of the following: the Internet of Vehicles V2X service identifier, the capability of the OBU, and the measurement report that the OBU is receiving or interested in receiving, wherein the measurement report is determined by the RSU to be performed.
  • the capabilities of the OBU include at least one of the following: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities.
  • the idle state of the OBU in this embodiment means that the OBU only allows receiving information sent by the RSU and does not allow information to be sent to the RSU.
  • the connected state of the OBU means that the OBU allows both receiving information sent by the RSU and allowing the RSU to be sent to the RSU. send Message.
  • the target area is an LTE coverage area or a DSRC coverage area.
  • the OBU performs information interaction between the source RSU and the target RSU, wherein the interaction
  • the information includes at least one of the following: the V2X service identification information received by the OBU or interested in receiving, the V2X service configuration information received by the OBU or interested in receiving, the OBU motion parameter, and the V2X service resource pool configuration; and the OBU motion parameter includes at least one of the following: OBU motion direction, OBU position, OBU motion speed, OBU acceleration.
  • the method further includes: the OBU or the RSU preferentially selecting the area with the highest frequency priority according to the frequency priority region.
  • 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 described in various embodiments of the present invention.
  • a device for selecting a target area of the on-board unit OBU is further 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.
  • the apparatus includes: a first selection module 22 configured to be an on-board unit OBU or a roadside unit RSU according to an OBU.
  • the status preference is to select the target area that supports the access of the vehicle network V2X service.
  • the first selecting module 22 is further configured to select, according to the status of the OBU, a target area that supports the access of the networked service according to one of the following preset policies:
  • the selection module is configured to select, when the OBU is in the idle state, the first region that supports the car networking service is selected as the target region by the OBU according to the first preset condition that the mobile management parameter sent by the received roadside unit RSU meets the first preset condition;
  • the selection module is configured to select the second area supporting the car networking service as the target area when the RSU satisfies the second preset condition according to the information reported by the received OBU when the OBU is in the connected state.
  • the mobility management parameter includes at least one of: reference signal received power RSRP threshold, reference signal received quality RSRQ threshold, frequency priority, cell reselection threshold, dedicated short-range communication DSRC channel utilization, DSRC backhaul uplink/downlink rate, DSRC
  • the beacon received signal strength indicates the RSSI and DSRC flags.
  • the RSRP threshold and the RSRQ threshold are used for measurement of the LTE coverage cell; the frequency priority and the cell reselection threshold are used for long-term evolution LTE inter-cell reselection; the DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon reception signal
  • the strength indicator RSSI is used for signal quality measurement of the DSRC coverage area; wherein the DSRC identifier 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 information reported by the OBU includes at least one of the following: an Internetworking V2X service identifier, an OBU capability, and a measurement report that the OBU is receiving or interested in receiving, wherein the measurement report is a basis for the RSU to determine whether a selection is needed.
  • the capabilities of the OBU include: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities.
  • the idle state of the OBU involved in this embodiment means that the OBU only allows receiving information sent by the RSU and does not allow information to be sent to the RSU.
  • the connected state of the OBU means that the OBU allows both receiving information sent by the RSU and sending information to the RSU.
  • the target area is an LTE coverage area or a DSRC coverage area.
  • the OBU performs information interaction between the source RSU and the target RSU, wherein the interaction
  • the information includes at least one of the following: the V2X service identification information received by the OBU or interested in receiving, the V2X service configuration information received by the OBU or interested in receiving, the OBU motion parameter, and the V2X service resource pool configuration; and the OBU motion parameter includes at least one of the following: OBU motion direction, OBU position, OBU motion speed, OBU acceleration.
  • the apparatus further includes: a second selection module, configured to preferentially select the frequency priority according to the frequency priority The area with the highest level is the target area.
  • the system includes: a roadside unit RSU32 and an onboard unit OBU34, which acquires an onboard unit OBU.
  • the state wherein the state includes: an idle state, a connected state; when the OBU is in an idle state, the OBU 34 selects the first to support the car network service according to the first preset condition when the mobile management parameter sent by the received roadside unit RSU satisfies the first preset condition
  • the area is the target area.
  • the RSU 32 selects the second area supporting the Internet of Vehicle service as the target area when the second preset condition is met according to the information reported by the received OBU.
  • 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.
  • the present optional embodiment provides a method for implementing V2X service continuity, the method comprising: transmitting cell reselection parameters, L-RSU, for an idle state Idle onboard unit OBU, an LTE roadside unit L-RSU and/or a DSRC RSU And D-RSU There is an interface between the Idle OBU and the target area supporting the V2X service for cell reselection according to the parameters sent by the RSU.
  • the OBU reports information to the L-RSU and/or the D-RSU, L-RSU and/or
  • the D-RSU preferentially selects a target area supporting the V2X service according to the OBU report information to perform handover.
  • FIG. 4 is a flowchart of a method for implementing V2X service continuity according to an optional embodiment of the present invention. As shown in FIG. 4, the steps of the method include:
  • step S201 it is determined whether the OBU is in an idle state. If yes, the process goes to step S202, otherwise, the process goes to step S204.
  • the onboard unit OBU may be the user equipment UE, and the idle state is RRC-Idle, that is, the OBU resides in the cell, but does not establish an RRC connection with the base station.
  • the OBU determines whether it is idle according to its own state.
  • 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 in an idle state, such as the OBU being connected.
  • Step S202 the RSU sends an OBU mobility management parameter.
  • the roadside unit RSU may be: an RSU in LTE or an RSU in a DSRC; the RSU in the LTE includes: a base station eNB and a stationary UE.
  • the mobile relationship parameter may be sent by using a system broadcast message or a dedicated RRC message; the system broadcast message may be an SIB message adding a corresponding field or an SIB message newly added for the V2X;
  • the mobility management parameter includes one or more of the following parameters: reference signal received power RSRP threshold, reference signal received quality RSRQ threshold, frequency priority, cell reselection threshold, DSRC channel utilization, DSRC backhaul uplink/downlink rate, DSRC letter The received signal strength indicator RSSI, and the DSRC identifier; wherein: the RSRP threshold and the RSRQ threshold are used for measurement of the LTE coverage cell, the frequency priority and the cell reselection threshold are used for LTE inter-cell reselection, the DSRC channel utilization, and the DSRC backhaul / downlink rate and DSRC beacon received signal strength indication RSSI is used for signal quality measurement of the DSRC coverage area, and the DSRC identifier includes at least one of the following: service set identifier (SSID) basic service set identifier (Basic SSID, Abbreviated as BSSID) and similar extended service set identifier (homogenous extended SSID, referred to as);
  • SSID service set
  • the source cell RSU may notify the target RSU in advance of the above information, and the target RSU refers to the RSU determined by the source RSU according to the moving characteristics of the OBU.
  • the source RSU may send the V2X resource configuration in the local cell to the target RSU through the interface, and the target RSU estimates the time when the OBU reaches the local cell, and allocates resources for the OBU, and reduces the interaction time of the OBU and the target cell RSU, that is, reduces the V2X service.
  • the interrupt time the target RSU allocates the same resources to the OBU as possible to the source RSU, and the source RSU notifies the OBU of the resource configuration of the target RSU.
  • the source RSU can indicate to the OBU through an information field whether the resource configuration of the target RSU is the same: if they are the same, then After the OBU enters the target cell, the V2X communication is directly performed without requesting resources or reading the resource configuration information.
  • the target RSU If the target RSU cannot allocate the same resource to the OBU, the target RSU sends the resource configuration information to the source RSU, and the source RSU will receive the information.
  • the resource configuration information is notified to the OBU, and the OBU is based on The received resource configuration information continues V2X communication in the target cell.
  • the information exchange process between the source RSU and the target RSU includes a cell reselection and a handover process, that is, the OBU is in an idle state or a connected state.
  • the OBU can use the autonomously selected resources, that is, select the required resources in the resource pool.
  • the same resource pool configuration needs to be adopted within the adjacent RSU coverage as much as possible, and the OBU is guaranteed to be in the source.
  • the resources used in the RSU are not occupied in the target RSU. If the RSU allocates a resource pool, the RSUs ensure the consistency of resource allocation in the neighboring cell resources through interaction. If other methods allocate resource pools, a certain method is adopted. Such as OAM) to ensure the consistency of resource allocation in neighboring cells. If the consistency is not guaranteed, the source RSU obtains the resource configuration of the target RSU and notifies the OBU through the interaction between the RSUs.
  • step S203 the OBU receives the parameters and performs cell reselection.
  • the OBU receives the parameters and performs cell reselection according to the parameters.
  • the OBU preferentially selects the cell that provides the V2X service for reselection, that is, the OBU sets the frequency of providing the required V2X service as the priority.
  • the cell includes: an LTE coverage cell or a DSRC coverage cell.
  • Step S204 the OBU reports the information to the RSU.
  • the information reported by the OBU to the RSU includes at least one of the following: a V2X service identifier being received or interested in receiving, an OBU capability, and a measurement report; wherein: the OBU capability includes at least one of the following: carrier aggregation CA capability, MBMS capability, and DSRC capability. Dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities; measurement reports are used by the RSU to determine if the OBU needs to be handed over.
  • the report is implemented by RRC signaling or other signaling.
  • the reporting condition is any of the following: the OBU periodically reports, the event triggers the report, or the RSU requests the OBU to report.
  • step S205 the RSU switches the OBU to the target cell.
  • the RSU selects the target cell according to the OBU report information and the handover algorithm, and the target cell may be an LTE coverage cell or a DSRC coverage cell, where the DSRC cell may be identified by any one of the following: SSID, BSSID, HESSID.
  • the RSU preferentially selects a cell that can provide the V2X service received or received by the OBU as the target cell for handover.
  • the embodiment further provides a roadside unit RSU, comprising: a first processor, configured to preferentially select a target area supporting the access of the vehicle network V2X service according to a state of the onboard unit OBU, wherein the state comprises at least one of the following: Idle state, connected state.
  • the first receiver is configured to receive the information reported by the OBU.
  • the first processor is further configured to: when the information reported by the OBU meets the second preset condition, and the OBU is in the connected state, select the second area that supports the Internet service. target area.
  • the embodiment provides an onboard unit OBU, including: a second processor, preferentially selecting a target area supporting the access of the vehicle network V2X service according to the state of the onboard unit OBU, wherein the status includes at least one of the following: an idle state, a connection state.
  • the second receiver is configured to receive the mobility management parameter sent by the roadside unit RSU; the second processor is further configured to: when the mobility management parameter meets the second preset condition, and the OBU is in an idle state, select to support the networked service
  • the first area serves as the target area.
  • the application scenario of this embodiment is: LTE->DRSC; wherein the application scenario can be subdivided into two sub-scenarios: (1) the target cell has only DSRC coverage; and (2) the target cell has DSRC and LTE coverage.
  • FIG. 5 is a schematic diagram of implementing V2X service continuity when a target cell has only DSRC coverage according to an alternative embodiment of the present invention. Based on the schematic diagram, the steps of the method in the first embodiment include:
  • Step S301 RRC-Idle OBU cell reselect cell reselection
  • the idle state OBU obtains a cell reselection parameter according to a broadcast message or an RRC dedicated signaling in the source LTE cell, such as a priority, an R criterion parameter, etc., when the idle state OBU moves out of the LTE cell, and reselects to the target DSRC according to the foregoing parameter.
  • a cell reselection parameter such as a broadcast message or an RRC dedicated signaling in the source LTE cell, such as a priority, an R criterion parameter, etc.
  • the cell reselection of the idle state OBU is completely controlled by the OBU itself.
  • the only reference is the reselection parameter provided by the source LTE cell.
  • the user of the OBU can manually select the cell without considering the reselection parameter, that is, the user manually selects the highest priority.
  • the OBU still needs to reselect to the DSRC cell. If the OBU supports the CS service, the CS service can be used. Residing in a non-DSRC cell.
  • OBU capabilities or OBU levels:
  • V2X capable UE+Normal Service (is it present: V2X capable UE only?);
  • the UE judges according to its own capabilities;
  • Step S302 RRC-Connected OBU handover
  • the source LTE base station is responsible for switching the OBU to the target cell.
  • the UE needs to report its OBU capability to the eNB to enable communication between the source LTE base station and the DSRC AP in order to implement handover to the DSRC target cell:
  • Manner 1 The direct interface between the LTE eNB and the AP is implemented through a process similar to the X2 handover.
  • Mode 2 The AP is connected to the P-GW (trusted non-3GPP access) or the AP is connected to the P-GW (untrusted non-3GPP access), and the handover is implemented through NAS signaling interaction;
  • Mode 3 Only application layer interconnection (such as AP and eNB access to the same traffic service center), and switching through application layer interaction.
  • application layer interconnection such as AP and eNB access to the same traffic service center
  • the content of the interaction between the LTE eNB and the AP includes at least: whether V2X is supported.
  • FIG. 6 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an alternative embodiment of the present invention. Based on the schematic diagram, the steps of the method in this embodiment include:
  • Step S401 RRC-Idle OBU cell reselect cell reselection
  • the cell reselection priority list sent by the network side includes the cell identifier of the LTE in addition to the DSRC cell identifier (SSID), and the two may have the same priority or the LTE cell priority is higher (the source base station according to the target cell load and signal)
  • the quality is determined by the following conditions:
  • the OBU in the idle state is divided into the following cases according to its own capabilities:
  • the OBU supports only a single radio access, that is, the OBU can only support LTE or WLAN access. If the LTE priority is high, the OBU reselects to the LTE cell. If the priorities are the same, the OBU reselects according to the predefined rules. To a cell with good signal quality;
  • the OBU supports simultaneous multiple radio accesses, and the OBU can receive signaling and data through both the LTE cell and the DSRC cell.
  • Step S402 RRC-Connected OBU handover
  • the source LTE base station is responsible for switching the OBU to the target cell.
  • the source eNB selects the target cell, which is generally based on the following principles:
  • the purpose of the handover is that the eNB allows the UE to enter the new cell to continue the V2X service.
  • the eNB considers that the V2X service priority of the OBU is higher than that of the Normal service. That is to say, if the new cell must support V2X, even if it gives up the Normal business.
  • the OBU only supports 5.9G V2X
  • the eNB switches the UE to the target cell.
  • the core invention point is to ensure the V2X service of the OBU, even if it abandons the normal service.
  • the OBU only supports a single radio access, and the source eNB prefers the LTE cell as the target cell if the target LTE is small.
  • the load of the zone is too large/signal quality is poor, and the source eNB can select the DSRC cell as the target cell;
  • the OBU supports multiple radio accesses at the same time.
  • the source eNB prefers the LTE cell as the target cell, and indicates that the OBU: the target area has DSRC coverage. After the OBU is switched to the target LTE cell, the OBU can access the DSRC according to predefined criteria and needs.
  • the cell or the source eNB selects the DSRC cell as the target cell, and indicates the OBU: the target area has LTE coverage. After the OBU switches to the target DSRC cell, the OBU can access the LTE cell according to the predefined criteria and its own needs.
  • Manner 1 The direct interface between the LTE eNB and the AP is implemented through a process similar to the X2 handover.
  • Mode 2 The AP is connected to the P-GW (trusted non-3GPP access) or the AP is connected to the P-GW (untrusted non-3GPP access), and the handover is implemented through NAS signaling interaction;
  • Mode 3 Application layer interconnection only (such as AP and eNB to the same traffic service center), and switching is implemented through application layer interaction.
  • the application scenario in this embodiment is DRSC->LTE, where the application scenario also includes two sub-scenarios: (1) the target cell has only LTE coverage; and (2) the target cell has DSRC and LTE coverage.
  • FIG. 7 is a schematic diagram of implementing V2X service continuity when the target cell has only LTE coverage according to an optional embodiment of the present invention. Based on the schematic diagram, the steps of the method in this embodiment include:
  • Step S501 idle OBU cell reselect
  • the criterion for the reselection of the idle state OBU cell in the DSRC cell is unclear. If the reselection is similar to the LTE cell reselection, the cell reselection is implemented by using the method in 3.1.1-1); otherwise, the rule is performed according to the DSRC rule, for example, the OBU. After leaving the DSRC coverage to enter the LTE coverage, the OBU detects the LTE cell, and supports V2X (indicated in the broadcast message), the OBU cell selects to the LTE cell.
  • the cell reselection of the idle state OBU is completely controlled by the OBU itself.
  • the only reference is the reselection parameter provided by the source LTE cell.
  • the user of the OBU can manually select the cell without considering the reselection parameter, that is, the user has the highest priority.
  • Step S502 Connected state OBU handover
  • the DSRC AP is responsible for switching the OBU to the target cell.
  • the source LTE base station and the DSRC AP may be required to communicate with each other: mode 1 is a direct interface between the LTE eNB and the AP, and is implemented by a process similar to X2 handover; mode 2 is an AP connection to the P.
  • Mode 3 is an application layer only interconnection (such as an AP and an eNB to the same traffic service center), and the switching is implemented through application layer interaction.
  • the content of the interaction between the LTE eNB and the AP includes at least: whether V2X is supported;
  • the handover cannot be implemented, and the OBU disconnects from the AP and enters the LTE cell, and the cell selects the LTE cell.
  • FIG. 8 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an optional embodiment of the present invention.
  • Step S601 idle state OBU cell reselect
  • the idle state OBU cell reselection criterion in the DSRC cell is unclear. If it is similar to the LTE cell reselection, the cell reselection is implemented by the method in 3.1.2-1); otherwise, it needs to be performed according to the DSRC rule, for example, the OBU leaves the DSRC.
  • the coverage enters the LTE/DSRC coverage, the OBU detects the LTE/DSRC cell, and supports V2X (indicated in the broadcast message).
  • the OBU in the idle state is classified into the following cases according to its own capabilities:
  • the OBU supports only a single radio access, that is, the OBU can only support LTE or WLAN access, and the OBU is preferentially reselected to the LTE cell, or the OBU reselects the cell with good signal quality according to a predefined rule;
  • the OBU supports simultaneous multiple radio accesses, and the OBU can receive signaling and data through both the LTE cell and the DSRC cell.
  • Step S602 Connected state OBU handover
  • the DSRC AP is responsible for switching the OBU to the target cell.
  • the AP selects the target cell, which is generally based on the following principles:
  • the OBU only supports a single radio access, and the AP prefers the LTE cell as the target cell. If the target LTE cell has excessive load/signal quality, the source AP may select the DSRC cell as the target cell.
  • the OBU supports multiple radio accesses at the same time.
  • the source AP prefers the LTE cell as the target cell, and indicates that the OBU: the target area has DSRC coverage. After the OBU is switched to the target LTE cell, the OBU can access the DSRC according to predefined criteria and needs.
  • the cell or the source AP selects the DSRC cell as the target cell, and indicates the OBU: the target area has LTE coverage. After the OBU is switched to the target DSRC cell, the OBU can access the LTE cell according to the predefined criteria and its own needs.
  • the source LTE base station and the AP of the DSRC can communicate: directly/via the gateway P-GW/interact through the application layer.
  • the OBU disconnects from the AP and enters the hybrid cell.
  • the OBU selects the LTE/DSRC/LTE+DSRC cell according to its own capabilities, measurement results, and predefined rules. .
  • Step S603 The DSRC AP is located in the LTE coverage.
  • FIG. 9 is a schematic diagram of implementing V2X service continuity when a DSRC AP is located in an LTE coverage according to an embodiment of the present invention.
  • an LTE eNB may switch an OBU to a DSRC in order to offload a V2X service to a DSRC.
  • the OBU reselects to the DSRC AP.
  • the OBU within the DSRC AP coverage moves out of the AP, and can also switch or reselect the cell to LTE.
  • the OBU located in the DSRC because it is also in the coverage of LTE, for the OBU of the dual receiver.
  • LTE control signaling such as SIB
  • data can also upload signaling/data to the eNB.
  • the OBU does not receive and receive within the DSRC.
  • signaling/data the signaling/data of LTE can be sent and received, and the requirements of settings such as LTE DRX/measurement interval need to be considered.
  • FIG. 10 is a schematic diagram of implementing V2X service continuity when switching between DSRCs according to the embodiment.
  • the service continuity related parameters are transmitted through the foregoing interface, and cell reselection or handover is performed, and the V2X is guaranteed.
  • the source cell RSU may notify the target RSU in advance of the above information, and the target RSU refers to the RSU determined by the source RSU according to the moving characteristics of the OBU.
  • the source RSU may send the V2X resource configuration in the local cell to the target RSU through the interface, and the target RSU estimates the time when the OBU reaches the local cell, and allocates resources for the OBU, and reduces the interaction time of the OBU and the target cell RSU, that is, reduces the V2X service.
  • the target RSU allocates the same resources to the OBU as possible to the source RSU, and the source RSU notifies the OBU of the resource configuration of the target RSU.
  • the source RSU can indicate to the OBU through an information field whether the resource configuration of the target RSU is the same: if they are the same, then After the OBU enters the target cell, the V2X communication is directly performed without requesting resources or reading the resource configuration information. If the target RSU cannot allocate the same resource to the OBU, the target RSU sends the resource configuration information to the source RSU, and the source RSU will receive the information.
  • the resource configuration information notifies the OBU that the OBU continues V2X communication in the target cell according to the received resource configuration information.
  • the application scenario of this embodiment is: LTE ⁇ ->LTE;
  • FIG. 11 is a schematic diagram of implementing V2X service continuity when switching between LTEs according to an alternative embodiment of the present invention.
  • the service continuity solution in the existing LTE is used to ensure V2X service continuity, and for idle state.
  • OBU The OBU will provide the frequency of the V2X service as the cell reselection frequency with the highest priority.
  • OBU The RSU preferentially selects the cell that provides the V2X service required by the OBU as the target cell for handover.
  • the source cell RSU may notify the target RSU in advance of the above information, and the target RSU refers to the RSU determined by the source RSU according to the moving characteristics of the OBU.
  • the source RSU may send the V2X resource configuration in the local cell to the target RSU through the interface, and the target RSU estimates the time when the OBU reaches the local cell, and allocates resources for the OBU, and reduces the interaction time of the OBU and the target cell RSU, that is, reduces the V2X service.
  • the target RSU allocates the same resources to the OBU as possible to the source RSU, and the source RSU notifies the OBU of the resource configuration of the target RSU.
  • the source RSU can indicate to the OBU through an information field whether the resource configuration of the target RSU is the same: if they are the same, then After the OBU enters the target cell, it does not need to request resources or read resource configuration information, but directly proceeds to V2X. If the target RSU cannot allocate the same resource to the OBU, the target RSU sends the resource configuration information to the source RSU, and the source RSU notifies the OBU of the received resource configuration information, and the OBU continues the V2X in the target cell according to the received resource configuration information. Communication.
  • the OBU can select resources on its own, that is, select the required resources in the resource pool. To ensure service continuity, you need to use the same resource pool configuration in the adjacent RSU coverage as much as possible, and ensure that the OBU is in the source RSU.
  • the resources used in the target RSU are not occupied. If the RSU allocates a resource pool, the RSUs ensure the consistency of resource allocation in the neighboring cells through interaction. If other methods allocate resource pools, a certain method is adopted. OAM) ensures the consistency of resource allocation in neighboring cells. If the consistency is not guaranteed, the source RSU obtains the resource configuration of the target RSU and notifies the OBU through the interaction between the RSUs;
  • FIG. 12 is a structural block diagram of an apparatus for V2X service continuity according to an embodiment of the present invention. As shown in FIG. 12, the apparatus includes:
  • the third receiver 1202 is configured to receive the report information sent by the OBU and receive the information of the neighboring RSU through the inter-RSU interface or the EPC interface or the application layer interface.
  • the first transmitter 1204 is configured to send, to the OBU, a V2 mobility management parameter, a local cell and/or a neighboring cell V2X resource configuration parameter;
  • the third processor 1206 is configured to perform a switching operation on the OBU.
  • the foregoing apparatus includes: an LTE RSU and a DSRC RSU, where the LTE RSU includes: a base station eNB or a stationary UE in the E-UTRAN;
  • FIG. 13 is a structural block diagram of a V2X service continuity apparatus according to an alternative embodiment of the present invention. As shown in FIG. 13, the apparatus includes:
  • a fourth receiver 1302 configured to receive a mobility management parameter and a V2X resource configuration parameter sent by the RSU, and a handover message that receives the RSU;
  • the first transmitter 1304 is configured to report information to the RSU.
  • the fourth processor 1306 is configured to perform measurement and cell reselection operations.
  • the above apparatus is included as an LTE OBU and a DSRC OBU, where the LTE RSU includes: a user equipment UE or a mobile terminal in the E-UTRAN.
  • LTE-RSU and DSRC-RSU are used for information interaction.
  • the OBU is configured to receive the cell reselection parameter and the V2X resource configuration parameter sent by the LTE-RSU and the DSRC-RSU, perform cell reselection according to the received cell reselection parameter, and send a report message to the LTE-RSU and the DSRC-RSU.
  • 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:
  • the onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the access of the vehicle network V2X service according to the state of the OBU.
  • 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 on-board unit OBU or the roadside unit RSU preferentially selects the target area supporting the access of the vehicle networking service according to the state of the OBU, so that the target area supporting the access of the vehicle networking service can be selected according to different states of the OBU.
  • the method solves the problem that the vehicle networking service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area in the related art, and improves the efficiency of the on-board unit OBU vehicle networking service execution.

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Abstract

The present invention provides a method, apparatus, and system for selecting a target area, an on-board unit (OBU), and a road side unit (RSU). The method comprises: an OBU or an RSU preferentially selects, according to a state of the OBU, a target area supporting access of a Vehicle to Everything (V2X) service, wherein the state comprises at least one of an idle state and a connected state. The present invention resolves the problem of difficulty in continuous execution of a V2X service of a vehicle during movement of the vehicle between a DSRC coverage area and an LTE coverage area in the related art.

Description

目标区域的选择方法、装置及系统、OBU、RSUTarget area selection method, device and system, OBU, RSU 技术领域Technical field
本发明涉及通信领域,具体而言,涉及一种目标区域的选择方法、装置及系统、OBU、RSU。The present invention relates to the field of communications, and in particular, to a method, an apparatus, and a system for selecting a target area, an OBU, and an RSU.
背景技术Background technique
目前有两种车联网(Vehicle to Everything,简称为V2X)实现技术:专用短距离通信(Dedicated Short Range Communication,简称为DSRC)和长期演进(Long Time Evolution,简称为LTE),其中DSRC基于IEEE802.11P和IEEE1609系列标准,802.11P负责物理层和媒体接入控制(Medium Access Control,简称为MAC)技术,1609负责上层规范。基于LTE的V2X技术刚开始讨论,还没有标准。At present, there are two technologies for implementing Vehicle to Everything (V2X): Dedicated Short Range Communication (DSRC) and Long Time Evolution (LTE), where DSRC is based on IEEE802. 11P and IEEE1609 series standards, 802.11P is responsible for the physical layer and Medium Access Control (MAC) technology, 1609 is responsible for the upper layer specification. The LTE-based V2X technology has just begun to be discussed and there are no standards.
在对相关技术中车联网的研究和实践过程中,发明人发现存在以下问题:由于DSRC和LTE V2X混合部署场景,车辆在DSRC覆盖区域和LTE覆盖区域间移动时,该车辆的车联网业务难以连续执行。In the research and practice of vehicle networking in related technologies, the inventors found that there are the following problems: due to the mixed deployment scenario of DSRC and LTE V2X, when the vehicle moves between the DSRC coverage area and the LTE coverage area, the vehicle network service of the vehicle is difficult. Continuous execution.
针对相关技术中的上述问题,目前尚未存在有效的解决方案。In view of the above problems in the related art, there is currently no effective solution.
发明内容Summary of the invention
本发明实施例提供了一种车载单元OBU目标区域的选择方法、装置及系统,以至少解决相关技术中车辆在DSRC覆盖区域和LTE覆盖区域间移动时,该车辆的车联网业务难以连续执行的问题。The embodiment of the invention provides a method, a device and a system for selecting a target area of an onboard unit OBU, so as to at least solve the problem that the vehicle network service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area in the related art. problem.
根据本发明实施例的一个方面,提供了一种车载单元OBU目标区域的选择方法,包括:车载单元OBU或路边单元RSU依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。According to an aspect of the embodiments of the present invention, a method for selecting a target area of an onboard unit OBU is provided, including: an onboard unit OBU or a roadside unit RSU preferentially selecting a target area for supporting a vehicle network V2X service access according to a state of the OBU The state includes at least one of the following: an idle state, a connected state.
可选地,依据所述OBU的状态按照以下之一预设策略选择支持车联网业务接入的目标区域:在所述OBU为空闲态时,所述OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为所述目标区域;在所述OBU为连接态时,所述RSU根据接收到的所述OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为所述目标区域。Optionally, the target area supporting the access to the Internet service is selected according to the state of the OBU according to one of the following preset policies: when the OBU is in an idle state, the OBU is sent according to the received roadside unit RSU. When the mobility management parameter meets the first preset condition, the first area supporting the Internet of Vehicles service is selected as the target area; when the OBU is in the connected state, the RSU satisfies the information according to the received information reported by the OBU. In the second preset condition, the second area supporting the Internet of Vehicles service is selected as the target area.
可选地,所述移动管理参数包括以下至少之一:参考信号接收功率RSRP门限、参考信号接收质量RSRQ门限、频率优先级、小区重选门限、专用短距离通信DSRC信道利用率、专用短距离通信回传路线DSRC backhaul上/下行速率、DSRC信标接收信号强度指示RSSI、DSRC标识。 Optionally, the mobility management parameter includes at least one of: a reference signal received power RSRP threshold, a reference signal received quality RSRQ threshold, a frequency priority, a cell reselection threshold, a dedicated short-range communication DSRC channel utilization, a dedicated short distance Communication backhaul route DSRC backhaul uplink/downlink rate, DSRC beacon received signal strength indication RSSI, DSRC identification.
可选地,所述RSRP门限和所述RSRQ门限用于LTE覆盖小区的测量;所述频率优先级和所述小区重选门限用于长期演进LTE小区间重选;所述DSRC信道利用率、所述DSRC backhaul上/下行速率和所述DSRC信标接收信号强度指示RSSI用于DSRC覆盖区域的信号质量测量;其中,所述DSRC标识包括以下至少一种:服务集标识SSID、基本服务集标识BSSID、同类扩展服务集标识HESSID。Optionally, the RSRP threshold and the RSRQ threshold are used for measurement of an LTE coverage cell; the frequency priority and the cell reselection threshold are used for long term evolution LTE inter-cell reselection; the DSRC channel utilization, The DSRC backhaul uplink/downlink rate and the DSRC beacon received signal strength indication RSSI are used for signal quality measurement of the DSRC coverage area; wherein the DSRC identifier includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, similar extended service set identifier HESSID.
可选地,所述OBU上报的信息包括以下至少之一:所述OBU正在接收或感兴趣接收的车联网V2X业务标识、所述OBU的能力、测量报告,其中,所述测量报告为所述RSU判断是否需要进行选择的依据。Optionally, the information reported by the OBU includes at least one of: an Internet of Vehicles V2X service identifier that the OBU is receiving or interested in receiving, an capability of the OBU, a measurement report, where the measurement report is The RSU determines if a basis for selection is required.
可选地,所述OBU的能力包括以下至少之一:载波聚合CA能力、多媒体广播多播MBMS能力、DSRC能力、双连接DC能力、LTE和DSRC同时接收的能力。Optionally, the capabilities of the OBU include at least one of: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, and LTE and DSRC simultaneous reception capabilities.
可选地,所述OBU的空闲态是指所述OBU仅允许接收RSU发送的信息而不允许向所述RSU发送信息,所述OBU的连接态是指所述OBU既允许接收所述RSU发送的信息也允许向所述RSU发送信息。Optionally, the idle state of the OBU means that the OBU only allows receiving information sent by the RSU and does not allow to send information to the RSU, where the connection state of the OBU means that the OBU allows to receive the RSU to send. The information also allows information to be sent to the RSU.
可选地,所述目标区域为LTE覆盖区域或DSRC覆盖区域。Optionally, the target area is an LTE coverage area or a DSRC coverage area.
可选地,所述OBU在所属的源RSU和目标RSU之间进行信息交互,其中,所述交互的信息包括以下至少之一:OBU接收或感兴趣接收的V2X业务标识信息,OBU接收或感兴趣接收的V2X业务配置信息、OBU运动参数、V2X业务资源池配置;所述OBU运动参数包括以下至少之一:OBU运动方向、OBU位置、OBU运动速度、OBU加速度。Optionally, the OBU performs information interaction between the source RSU and the target RSU, where the information of the interaction includes at least one of the following: the V2X service identifier information received by the OBU or is of interest, and the OBU receiving or sensing The V2X service configuration information, the OBU motion parameter, and the V2X service resource pool configuration are received by the interest; the OBU motion parameter includes at least one of the following: an OBU motion direction, an OBU position, an OBU motion speed, and an OBU acceleration.
可选地,在车载单元OBU或路边单元RSU依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域之后,所述方法还包括:所述OBU或所述RSU依据频率优先级优先选择频率优先级高的区域作为所述目标区域。Optionally, after the onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the Internet of Vehicles V2X service access according to the state of the OBU, the method further includes: the OBU or the RSU according to a frequency priority An area having a high frequency priority is preferentially selected as the target area.
根据本发明实施例的另一个方面,提供了一种车载单元OBU目标区域的选择装置,应用于车载单元OBU或路边单元RSU,包括:第一选择模块,设置为依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。According to another aspect of the present invention, a device for selecting a target area of an on-board unit OBU is provided, which is applied to an on-board unit OBU or a roadside unit RSU, and includes: a first selection module, configured to preferentially according to a state of the OBU Selecting a target area supporting the access of the Internet of Vehicles V2X service, wherein the status includes at least one of the following: an idle state, a connected state.
可选地,所述选择模块依据所述OBU的状态按照以下之一预设策略选择支持车联网业务接入的目标区域:所述选择模块,设置为在所述OBU为空闲态时,所述OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为所述目标区域;所述选择模块,设置为在所述OBU为连接态时,所述RSU根据接收到的所述OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为所述目标区域。Optionally, the selecting module selects, according to one of the following preset policies, a target area that supports access to the Internet service according to the state of the OBU: the selecting module is configured to: when the OBU is in an idle state, When the OBU meets the first preset condition according to the received mobility management parameter sent by the roadside unit RSU, the OBU selects a first area supporting the Internet service as the target area; and the selection module is configured to be connected in the OBU. And when the RSU meets the second preset condition according to the received information reported by the OBU, selecting a second area supporting the Internet of Vehicle service as the target area.
可选地,所述移动管理参数包括以下至少之一:参考信号接收功率RSRP门限、参考信号接收质量RSRQ门限、频率优先级、小区重选门限、专用短距离通信DSRC信道利用率、DSRC backhaul上/下行速率、DSRC信标接收信号强度指示RSSI、DSRC标识。 Optionally, the mobility management parameter includes at least one of: a reference signal received power RSRP threshold, a reference signal received quality RSRQ threshold, a frequency priority, a cell reselection threshold, a dedicated short-range communication DSRC channel utilization, and a DSRC backhaul / Downstream rate, DSRC beacon received signal strength indication RSSI, DSRC identification.
可选地,所述RSRP门限和所述RSRQ门限用于LTE覆盖小区的测量;所述频率优先级和所述小区重选门限用于长期演进LTE小区间重选;Optionally, the RSRP threshold and the RSRQ threshold are used for measurement of an LTE coverage cell; the frequency priority and the cell reselection threshold are used for long term evolution LTE inter-cell reselection;
所述DSRC信道利用率、所述DSRC backhaul上/下行速率和所述DSRC信标接收信号强度指示RSSI用于DSRC覆盖区域的信号质量测量;The DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon received signal strength indication RSSI are used for signal quality measurement of the DSRC coverage area;
其中,所述DSRC标识包括以下至少一种:服务集标识SSID、基本服务集标识BSSID、同类扩展服务集标识HESSID。The DSRC identifier 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.
可选地,所述OBU上报的信息包括以下至少之一:所述OBU正在接收或感兴趣接收的车联网V2X业务标识、所述OBU的能力、测量报告,其中,所述测量报告为所述RSU判断是否需要进行选择的依据。Optionally, the information reported by the OBU includes at least one of: an Internet of Vehicles V2X service identifier that the OBU is receiving or interested in receiving, an capability of the OBU, a measurement report, where the measurement report is The RSU determines if a basis for selection is required.
可选地,所述OBU的能力包括以下至少之一:载波聚合CA能力、多媒体广播多播MBMS能力、DSRC能力、双连接DC能力、LTE和DSRC同时接收的能力。Optionally, the capabilities of the OBU include at least one of: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, and LTE and DSRC simultaneous reception capabilities.
可选地,所述OBU的空闲态是指所述OBU仅允许接收RSU发送的信息而不允许向所述RSU发送信息,所述OBU的连接态是指所述OBU既允许接收所述RSU发送的信息也允许向所述RSU发送信息。Optionally, the idle state of the OBU means that the OBU only allows receiving information sent by the RSU and does not allow to send information to the RSU, where the connection state of the OBU means that the OBU allows to receive the RSU to send. The information also allows information to be sent to the RSU.
可选地,所述目标区域为LTE覆盖区域或DSRC覆盖区域。Optionally, the target area is an LTE coverage area or a DSRC coverage area.
可选地,所述OBU在所属的源RSU和目标RSU之间进行信息交互,其中,所述交互的信息包括以下至少之一:OBU接收或感兴趣接收的V2X业务标识信息,OBU接收或感兴趣接收的V2X业务配置信息、OBU运动参数、V2X业务资源池配置;所述OBU运动参数包括以下至少之一:OBU运动方向、OBU位置、OBU运动速度、OBU加速度。Optionally, the OBU performs information interaction between the source RSU and the target RSU, where the information of the interaction includes at least one of the following: the V2X service identifier information received by the OBU or is of interest, and the OBU receiving or sensing The V2X service configuration information, the OBU motion parameter, and the V2X service resource pool configuration are received by the interest; the OBU motion parameter includes at least one of the following: an OBU motion direction, an OBU position, an OBU motion speed, and an OBU acceleration.
可选地,在车载单元OBU或路边单元RSU依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域之后,所述装置还包括:第二选择模块,设置为依据频率优先级优先选择频率优先级高的区域作为所述目标区域。Optionally, after the onboard unit OBU or the roadside unit RSU preferentially selects the target area supporting the Internet of Vehicles V2X service access according to the state of the OBU, the apparatus further includes: a second selection module, configured to be based on the frequency priority An area having a high frequency priority is preferentially selected as the target area.
根据本发明实施例的再一个方面,提供了一种车载单元OBU目标区域的选择系统,包括:路边单元RSU和车载单元OBU,路边单元RSU获取车载单元OBU的状态,其中,所述状态包括:空闲态、连接态;在所述OBU为空闲态时,所述OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为所述目标区域;在所述OBU为连接态时,所述RSU根据接收到的所述OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为所述目标区域。According to still another aspect of the embodiments of the present invention, a selection system for a target area of an onboard unit OBU is provided, including: a roadside unit RSU and an onboard unit OBU, wherein the roadside unit RSU acquires a state of the onboard unit OBU, wherein the state The method includes: an idle state, a connected state; when the OBU is in an idle state, the OBU selects a first region supporting the car networking service according to the first preset condition that the mobile management parameter sent by the received roadside unit RSU meets the first preset condition As the target area, when the OBU is in the connected state, the RSU selects the second area supporting the Internet of Vehicle service as the target area when the received information reported by the OBU satisfies the second preset condition. .
根据本发明实施例的又一个方面,提供了一种路边单元RSU,包括:第一处理器,设置为依据车载单元OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。According to still another aspect of the embodiments of the present invention, a roadside unit RSU is provided, including: a first processor, configured to preferentially select a target area supporting the vehicle networking V2X service access according to a state of the onboard unit OBU, where The state includes at least one of the following: an idle state, a connected state.
可选地,所述RSU还包括:第一接收器,设置为接收所述OBU上报的信息;所述第一处理器,还设置为在所述OBU上报的信息满足第二预设条件,且所述OBU为连接态时,选 择支持车联网业务的第二区域作为所述目标区域。Optionally, the RSU further includes: a first receiver, configured to receive the information reported by the OBU; the first processor, further configured to: the information reported by the OBU meets a second preset condition, and When the OBU is in a connected state, The second area supporting the car networking service is selected as the target area.
根据本发明实施例的再一个方面,提供了一种车载单元OBU,包括:第二处理器,依据车载单元OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。According to still another aspect of the embodiments of the present invention, an onboard unit OBU is provided, including: a second processor, preferentially selecting a target area supporting the access of the vehicle network V2X service according to a state of the onboard unit OBU, wherein the status includes At least one of the following: idle state, connected state.
可选地,所述OBU还包括:第二接收器,设置为接收路边单元RSU发送的移动管理参数;所述第二处理器,还设置为在所述移动管理参数满足第二预设条件,且所述OBU为空闲态时,选择支持车联网业务的第一区域作为所述目标区域。Optionally, the OBU further includes: a second receiver configured to receive a mobility management parameter sent by the roadside unit RSU; the second processor further configured to meet the second preset condition in the mobility management parameter And when the OBU is in an idle state, selecting a first area supporting the Internet of Vehicles service as the target area.
通过本发明实施例,采用车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网业务接入的目标区域,从而可以根据OBU的不同状态,选择支持车联网业务接入的目标区域的方式,解决了相关技术中车辆在DSRC覆盖区域和LTE覆盖区域间移动时,该车辆的车联网业务难以连续执行的问题,提高了车载单元OBU车联网业务执行的效率。According to the embodiment of the present invention, the on-board unit OBU or the roadside unit RSU preferentially selects the target area supporting the access of the vehicle networking service according to the state of the OBU, so that the target area supporting the access of the vehicle networking service can be selected according to different states of the OBU. The method solves the problem that the vehicle networking service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area in the related art, and improves the efficiency of the on-board unit OBU vehicle networking service execution.
附图说明DRAWINGS
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:
图1是根据本发明实施例的车载单元OBU目标区域的选择方法的流程图;1 is a flowchart of a method of selecting a target area of an onboard unit OBU according to an embodiment of the present invention;
图2是根据本发明实施例的车载单元OBU目标区域的选择装置的结构框图;2 is a structural block diagram of a device for selecting a target area of an on-board unit OBU according to an embodiment of the present invention;
图3是根据本发明实施例的车载单元OBU目标区域的选择系统的结构框图;3 is a structural block diagram of a selection system of a target area of an onboard unit OBU according to an embodiment of the present invention;
图4是根据本发明可选实施例的实现V2X业务连续性的方法的流程图;4 is a flow diagram of a method of implementing V2X traffic continuity in accordance with an alternate embodiment of the present invention;
图5是根据本发明可选实施例在目标小区只有DSRC覆盖时实现V2X业务连续性的示意图;5 is a schematic diagram of implementing V2X service continuity when a target cell has only DSRC coverage according to an alternative embodiment of the present invention;
图6是根据本发明可选实施例的在目标小区有DSRC和LTE覆盖时实现V2X业务连续性的示意图;6 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an alternative embodiment of the present invention;
图7是根据本发明可选实施例的在目标小区只有LTE覆盖时实现V2X业务连续性的示意图;7 is a schematic diagram of implementing V2X service continuity when a target cell has only LTE coverage according to an alternative embodiment of the present invention;
图8是根据本发明可选实施例的在目标小区有DSRC和LTE覆盖时实现V2X业务连续性的示意图;8 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an alternative embodiment of the present invention;
图9是根据本发明实施例的当DSRC AP位于LTE覆盖内时实现V2X业务连续性的示意图;9 is a schematic diagram of implementing V2X service continuity when a DSRC AP is located in an LTE coverage according to an embodiment of the present invention;
图10是根据本实施例的DSRC之间的切换时实现V2X业务连续性的示意图;FIG. 10 is a schematic diagram of realizing V2X service continuity when switching between DSRCs according to the present embodiment; FIG.
图11是根据本发明可选实施例的LTE之间切换时实现V2X业务连续性的示意图; 11 is a schematic diagram of implementing V2X service continuity when switching between LTEs according to an alternative embodiment of the present invention;
图12是根据本发明实施例的V2X业务连续性的装置结构框图;12 is a block diagram showing the structure of an apparatus for V2X service continuity according to an embodiment of the present invention;
图13是根据本发明可选实施例的V2X业务连续性装置的结构框图。13 is a block diagram showing the structure of a V2X service continuity apparatus in accordance with an alternative embodiment of the present invention.
具体实施方式detailed description
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
需要说明的是,本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.
在本实施例中提供了一种车载单元OBU目标区域的选择方法,图1是根据本发明实施例的车载单元OBU目标区域的选择方法的流程图,如图1所示,该流程包括如下步骤:In this embodiment, a method for selecting a target area of an on-board unit OBU is provided. FIG. 1 is a flowchart of a method for selecting a target area of an on-board unit OBU according to an embodiment of the present invention. As shown in FIG. 1, the flow includes the following steps. :
步骤S102:车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,状态包括以下至少之一:空闲态、连接态;Step S102: The onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the access of the vehicle network V2X service according to the state of the OBU, wherein the state includes at least one of the following: an idle state and a connected state;
通过本实施例的步骤S102,车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网业务接入的目标区域,从而可以根据OBU的不同状态,选择支持车联网业务接入的目标区域,解决了相关技术中车辆在DSRC覆盖区域和LTE覆盖区域间移动时,该车辆的车联网业务难以连续执行的问题,提高了车载单元OBU车联网业务执行的效率。Through the step S102 of the embodiment, the onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the access of the vehicle network service according to the state of the OBU, so that the target area supporting the access of the vehicle network service can be selected according to different states of the OBU. The problem that the vehicle networking service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area is solved, and the efficiency of the on-board unit OBU vehicle networking service execution is improved.
对于本实施例中涉及到的步骤S102,可以依据OBU的状态按照以下之一预设策略选择支持车联网业务接入的目标区域:For the step S102 involved in the embodiment, the target area supporting the access of the car network service may be selected according to one of the following preset policies according to the state of the OBU:
方式一:在OBU为空闲态时,由OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为目标区域;Manner 1: When the OBU is in the idle state, the OBU selects the first area supporting the Internet service as the target area when the mobility management parameter sent by the OBU according to the received roadside unit RSU satisfies the first preset condition;
方式二:在OBU为连接态时,由RSU根据接收到的OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为目标区域。Manner 2: When the OBU is in the connected state, when the RSU satisfies the second preset condition according to the information reported by the received OBU, the second area supporting the Internet of Vehicle service is selected as the target area.
其中,需要说明的是,上述涉及到的第一预设条件在本实施例中可选的为Uu口信号质量满足小区重选要求,或DSRC空口信号质量满足小区重选要求;而该第二预设条件可选的为Uu口测量报告满足切换要求,或DSRC空口测量报告满足切换要求。It should be noted that, in the foregoing, the foregoing first preset condition may be that the Uu interface signal quality meets the cell reselection requirement, or the DSRC air interface signal quality meets the cell reselection requirement; and the second The preset condition is that the Uu port measurement report satisfies the handover requirement, or the DSRC air interface measurement report satisfies the handover requirement.
对于本实施例中涉及到的移动管理参数包括以下至少之一:参考信号接收功率RSRP门限、参考信号接收质量RSRQ门限、频率优先级、小区重选门限、专用短距离通信DSRC信道利用率、DSRC backhaul上/下行速率、DSRC信标接收信号强度指示RSSI、DSRC标识。其中,RSRP门限和RSRQ门限用于LTE覆盖小区的测量;频率优先级和小区重选门限用于长期演进LTE小区间重选;DSRC信道利用率、DSRC backhaul上/下行速率和DSRC信标接收信号强度指示RSSI用于DSRC覆盖区域的信号质量测量;其中,DSRC标识包括以下至少一种:服务集标识SSID、基本服务集标识BSSID、同类扩展服务集标识HESSID。 The mobility management parameters involved in this embodiment include at least one of: reference signal received power RSRP threshold, reference signal received quality RSRQ threshold, frequency priority, cell reselection threshold, dedicated short-range communication DSRC channel utilization, DSRC Backhaul uplink/downlink rate, DSRC beacon received signal strength indication RSSI, DSRC identification. The RSRP threshold and the RSRQ threshold are used for measurement of the LTE coverage cell; the frequency priority and the cell reselection threshold are used for long-term evolution LTE inter-cell reselection; the DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon reception signal The strength indicator RSSI is used for signal quality measurement of the DSRC coverage area; wherein the DSRC identifier 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.
而对于本实施例中涉及到的OBU上报的信息包括以下至少之一:OBU正在接收或感兴趣接收的车联网V2X业务标识、OBU的能力、测量报告,其中,测量报告为RSU判断是否需要进行选择的依据。该OBU的能力包括以下至少之一:载波聚合CA能力、多媒体广播多播MBMS能力、DSRC能力、双连接DC能力、LTE和DSRC同时接收的能力。The information reported by the OBU in this embodiment includes at least one of the following: the Internet of Vehicles V2X service identifier, the capability of the OBU, and the measurement report that the OBU is receiving or interested in receiving, wherein the measurement report is determined by the RSU to be performed. The basis for the selection. The capabilities of the OBU include at least one of the following: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities.
需要说明的是,本实施例中的OBU的空闲态是指OBU仅允许接收RSU发送的信息而不允许向RSU发送信息,OBU的连接态是指OBU既允许接收RSU发送的信息也允许向RSU发送信息。此外,目标区域为LTE覆盖区域或DSRC覆盖区域。It should be noted that the idle state of the OBU in this embodiment means that the OBU only allows receiving information sent by the RSU and does not allow information to be sent to the RSU. The connected state of the OBU means that the OBU allows both receiving information sent by the RSU and allowing the RSU to be sent to the RSU. send Message. In addition, the target area is an LTE coverage area or a DSRC coverage area.
而在车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网V2X业务接入的目标区域的过程中,该OBU在所属的源RSU和目标RSU之间进行信息交互,其中,交互的信息包括以下至少之一:OBU接收或感兴趣接收的V2X业务标识信息,OBU接收或感兴趣接收的V2X业务配置信息、OBU运动参数、V2X业务资源池配置;OBU运动参数包括以下至少之一:OBU运动方向、OBU位置、OBU运动速度、OBU加速度。In the process of the vehicle unit OBU or the roadside unit RSU preferentially selecting the target area supporting the access of the vehicle network V2X service according to the state of the OBU, the OBU performs information interaction between the source RSU and the target RSU, wherein the interaction The information includes at least one of the following: the V2X service identification information received by the OBU or interested in receiving, the V2X service configuration information received by the OBU or interested in receiving, the OBU motion parameter, and the V2X service resource pool configuration; and the OBU motion parameter includes at least one of the following: OBU motion direction, OBU position, OBU motion speed, OBU acceleration.
此外,在车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网V2X业务接入的目标区域之后,方法还包括:OBU或RSU依据频率优先级优先选择频率优先级高的区域作为目标区域。In addition, after the on-board unit OBU or the roadside unit RSU preferentially selects the target area supporting the access of the vehicle network V2X service according to the state of the OBU, the method further includes: the OBU or the RSU preferentially selecting the area with the highest frequency priority according to the frequency priority region.
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,或者网络设备等)执行本发明各个实施例所述的方法。Through the description of the above embodiments, those skilled in the art can clearly understand that 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. Based on such understanding, 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 described in various embodiments of the present invention.
在本实施例中还提供了一种车载单元OBU目标区域的选择装置,该装置用于实现上述实施例及优选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。In this embodiment, a device for selecting a target area of the on-board unit OBU is further provided, and the device is used to implement the above-mentioned embodiments and preferred embodiments, and the detailed description thereof has been omitted. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although 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.
图2是根据本发明实施例的车载单元OBU目标区域的选择装置的结构框图,如图2所示,该装置包括:第一选择模块22,设置为车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网V2X业务接入的目标区域。2 is a structural block diagram of a device for selecting a target area of an on-board unit OBU according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes: a first selection module 22 configured to be an on-board unit OBU or a roadside unit RSU according to an OBU. The status preference is to select the target area that supports the access of the vehicle network V2X service.
可选地,第一选择模块22,还设置为依据OBU的状态按照以下之一预设策略选择支持车联网业务接入的目标区域:Optionally, the first selecting module 22 is further configured to select, according to the status of the OBU, a target area that supports the access of the networked service according to one of the following preset policies:
方式一:选择模块设置为在OBU为空闲态时,由OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为目标区域;Manner 1: The selection module is configured to select, when the OBU is in the idle state, the first region that supports the car networking service is selected as the target region by the OBU according to the first preset condition that the mobile management parameter sent by the received roadside unit RSU meets the first preset condition;
方式二:选择模块设置为在OBU为连接态时,由RSU根据接收到的OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为目标区域。 Manner 2: The selection module is configured to select the second area supporting the car networking service as the target area when the RSU satisfies the second preset condition according to the information reported by the received OBU when the OBU is in the connected state.
该移动管理参数包括以下至少之一:参考信号接收功率RSRP门限、参考信号接收质量RSRQ门限、频率优先级、小区重选门限、专用短距离通信DSRC信道利用率、DSRC backhaul上/下行速率、DSRC信标接收信号强度指示RSSI、DSRC标识。其中,RSRP门限和RSRQ门限用于LTE覆盖小区的测量;频率优先级和小区重选门限用于长期演进LTE小区间重选;DSRC信道利用率、DSRC backhaul上/下行速率和DSRC信标接收信号强度指示RSSI用于DSRC覆盖区域的信号质量测量;其中,DSRC标识包括以下至少一种:服务集标识SSID、基本服务集标识BSSID、同类扩展服务集标识HESSID。The mobility management parameter includes at least one of: reference signal received power RSRP threshold, reference signal received quality RSRQ threshold, frequency priority, cell reselection threshold, dedicated short-range communication DSRC channel utilization, DSRC backhaul uplink/downlink rate, DSRC The beacon received signal strength indicates the RSSI and DSRC flags. The RSRP threshold and the RSRQ threshold are used for measurement of the LTE coverage cell; the frequency priority and the cell reselection threshold are used for long-term evolution LTE inter-cell reselection; the DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon reception signal The strength indicator RSSI is used for signal quality measurement of the DSRC coverage area; wherein the DSRC identifier 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.
其中,该OBU上报的信息包括以下至少之一:OBU正在接收或感兴趣接收的车联网V2X业务标识、OBU的能力、测量报告,其中,测量报告为RSU判断是否需要进行选择的依据。该OBU的能力包括:载波聚合CA能力、多媒体广播多播MBMS能力、DSRC能力、双连接DC能力、LTE和DSRC同时接收的能力。The information reported by the OBU includes at least one of the following: an Internetworking V2X service identifier, an OBU capability, and a measurement report that the OBU is receiving or interested in receiving, wherein the measurement report is a basis for the RSU to determine whether a selection is needed. The capabilities of the OBU include: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities.
在本实施例中涉及到的OBU的空闲态是指OBU仅允许接收RSU发送的信息而不允许向RSU发送信息,OBU的连接态是指OBU既允许接收RSU发送的信息也允许向RSU发送信息。此外,目标区域为LTE覆盖区域或DSRC覆盖区域。The idle state of the OBU involved in this embodiment means that the OBU only allows receiving information sent by the RSU and does not allow information to be sent to the RSU. The connected state of the OBU means that the OBU allows both receiving information sent by the RSU and sending information to the RSU. . In addition, the target area is an LTE coverage area or a DSRC coverage area.
而在车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网V2X业务接入的目标区域的过程中,该OBU在所属的源RSU和目标RSU之间进行信息交互,其中,交互的信息包括以下至少之一:OBU接收或感兴趣接收的V2X业务标识信息,OBU接收或感兴趣接收的V2X业务配置信息、OBU运动参数、V2X业务资源池配置;OBU运动参数包括以下至少之一:OBU运动方向、OBU位置、OBU运动速度、OBU加速度。In the process of the vehicle unit OBU or the roadside unit RSU preferentially selecting the target area supporting the access of the vehicle network V2X service according to the state of the OBU, the OBU performs information interaction between the source RSU and the target RSU, wherein the interaction The information includes at least one of the following: the V2X service identification information received by the OBU or interested in receiving, the V2X service configuration information received by the OBU or interested in receiving, the OBU motion parameter, and the V2X service resource pool configuration; and the OBU motion parameter includes at least one of the following: OBU motion direction, OBU position, OBU motion speed, OBU acceleration.
可选地,在车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网V2X业务接入的目标区域之后,装置还包括:第二选择模块,设置为依据频率优先级优先选择频率优先级高的区域作为目标区域。Optionally, after the onboard unit OBU or the roadside unit RSU preferentially selects the target area supporting the Internet of Vehicles V2X service access according to the state of the OBU, the apparatus further includes: a second selection module, configured to preferentially select the frequency priority according to the frequency priority The area with the highest level is the target area.
图3是根据本发明实施例的车载单元OBU目标区域的选择系统的结构框图,如图3所示,该系统包括:路边单元RSU32和车载单元OBU34,该路边单元RSU获取车载单元OBU的状态,其中,状态包括:空闲态、连接态;在OBU为空闲态时,OBU34根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为目标区域;在OBU为连接态时,RSU32根据接收到的OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为目标区域。3 is a structural block diagram of a selection system of a target area of an on-board unit OBU according to an embodiment of the present invention. As shown in FIG. 3, the system includes: a roadside unit RSU32 and an onboard unit OBU34, which acquires an onboard unit OBU. The state, wherein the state includes: an idle state, a connected state; when the OBU is in an idle state, the OBU 34 selects the first to support the car network service according to the first preset condition when the mobile management parameter sent by the received roadside unit RSU satisfies the first preset condition The area is the target area. When the OBU is in the connected state, the RSU 32 selects the second area supporting the Internet of Vehicle service as the target area when the second preset condition is met according to the information reported by the received OBU.
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下方式实现,但不限于此:上述模块均位于同一处理器中;或者,上述模块分别位于多个处理器中。It should be noted that each of the above modules may be implemented by software or hardware. For the latter, 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.
下面结合本发明的可选实施例对本发明进行举例说明;The invention is exemplified below in conjunction with an alternative embodiment of the invention;
本可选实施例提供了一种实现V2X业务连续性的方法,该方法包括:对于空闲态Idle车载单元OBU,LTE路边单元L-RSU和/或DSRC RSU发送小区重选参数,L-RSU和D-RSU 之间有接口,Idle OBU根据RSU发送的参数优先选择支持V2X业务的目标区域进行小区重选;对于连接态OBU,OBU向L-RSU和/或D-RSU上报信息,L-RSU和/或D-RSU根据OBU上报信息优先选择支持V2X业务的目标区域进行切换。The present optional embodiment provides a method for implementing V2X service continuity, the method comprising: transmitting cell reselection parameters, L-RSU, for an idle state Idle onboard unit OBU, an LTE roadside unit L-RSU and/or a DSRC RSU And D-RSU There is an interface between the Idle OBU and the target area supporting the V2X service for cell reselection according to the parameters sent by the RSU. For the connected OBU, the OBU reports information to the L-RSU and/or the D-RSU, L-RSU and/or The D-RSU preferentially selects a target area supporting the V2X service according to the OBU report information to perform handover.
图4是根据本发明可选实施例的实现V2X业务连续性的方法的流程图,如图4所示,该方法的步骤包括:4 is a flowchart of a method for implementing V2X service continuity according to an optional embodiment of the present invention. As shown in FIG. 4, the steps of the method include:
步骤S201,判断OBU是否为空闲态,如果是,转向步骤S202,否则,转向步骤S204。In step S201, it is determined whether the OBU is in an idle state. If yes, the process goes to step S202, otherwise, the process goes to step S204.
其中,该车载单元OBU在本可选实施例中可以是用户设备UE,空闲态为RRC-Idle,即OBU驻留在小区,但没有和基站建立RRC连接。OBU根据自身状态确定是否为空闲态。In this alternative embodiment, the onboard unit OBU may be the user equipment UE, and the idle state is RRC-Idle, that is, the OBU resides in the cell, but does not establish an RRC connection with the base station. The OBU determines whether it is idle according to its own state.
需要指出的是,如果OBU在DSRC覆盖区域内,则空闲态是指OBU只能接收RSU发送的信息而不能向RSU发送信息,如果OBU既可以接收RSU发送的信息也可以向RSU发送信息,则OBU不是空闲态,如OBU为连接态。It should be noted that 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 in an idle state, such as the OBU being connected.
步骤S202,RSU发送OBU移动管理参数;Step S202, the RSU sends an OBU mobility management parameter.
其中,该路边单元RSU可以是:LTE中的RSU或DSRC中RSU;该LTE中的RSU包括:基站eNB和静止UE.The roadside unit RSU may be: an RSU in LTE or an RSU in a DSRC; the RSU in the LTE includes: a base station eNB and a stationary UE.
而该移动关系参数可以通过系统广播消息或专用RRC消息发送;系统广播消息可以是SIB消息增加相应字段或者专为V2X新增的SIB消息;The mobile relationship parameter may be sent by using a system broadcast message or a dedicated RRC message; the system broadcast message may be an SIB message adding a corresponding field or an SIB message newly added for the V2X;
该移动管理参数包括以下一种或多种参数:参考信号接收功率RSRP门限、参考信号接收质量RSRQ门限、频率优先级、小区重选门限、DSRC信道利用率、DSRC backhaul上/下行速率、DSRC信标接收信号强度指示RSSI、,DSRC标识;其中:RSRP门限和RSRQ门限用于LTE覆盖小区的测量,频率优先级和小区重选门限用于LTE小区间重选,DSRC信道利用率、DSRC backhaul上/下行速率和DSRC信标接收信号强度指示RSSI用于DSRC覆盖区域的信号质量测量,DSRC标识包括以下至少一种:服务集标识(service set ID,简称为SSID)基本服务集标识(Basic SSID,简称为BSSID)和同类扩展服务集标识(homogenous extended SSID,简称为);The mobility management parameter includes one or more of the following parameters: reference signal received power RSRP threshold, reference signal received quality RSRQ threshold, frequency priority, cell reselection threshold, DSRC channel utilization, DSRC backhaul uplink/downlink rate, DSRC letter The received signal strength indicator RSSI, and the DSRC identifier; wherein: the RSRP threshold and the RSRQ threshold are used for measurement of the LTE coverage cell, the frequency priority and the cell reselection threshold are used for LTE inter-cell reselection, the DSRC channel utilization, and the DSRC backhaul / downlink rate and DSRC beacon received signal strength indication RSSI is used for signal quality measurement of the DSRC coverage area, and the DSRC identifier includes at least one of the following: service set identifier (SSID) basic service set identifier (Basic SSID, Abbreviated as BSSID) and similar extended service set identifier (homogenous extended SSID, referred to as);
LTE-RSU和DSRC-RSU之间存在接口,上述相关移动管理参数可通过L-RSU和D-RSU之间的接口传递。考虑到OBU移动的规律性,如在高速路上车辆方向、速度等一般变化不大,源小区RSU可以将上述信息事先通知目标RSU,目标RSU是指源RSU根据OBU的移动特征确定的RSU,进一步源RSU可以将本小区内的V2X资源配置通过接口发送给目标RSU,目标RSU估计OBU到达本小区的时间,并为OBU分配资源,考虑到减少OBU和目标小区RSU的交互时间,即降低V2X业务的中断时间,目标RSU尽可能与源RSU为OBU分配相同的资源,源RSU通知OBU目标RSU的资源配置,源RSU可通过一信息字段向OBU指示目标RSU的资源配置是否相同:如果相同,则OBU进入目标小区后不用请求资源或读取资源配置信息,而直接继续进行V2X通信,如果目标RSU不能为OBU分配相同的资源,则目标RSU向源RSU发送资源配置信息,源RSU将收到的资源配置信息通知OBU,OBU根据 收到的资源配置信息在目标小区继续进行V2X通信。There is an interface between the LTE-RSU and the DSRC-RSU, and the above related mobility management parameters can be transmitted through the interface between the L-RSU and the D-RSU. Considering the regularity of the OBU movement, such as the general change of the direction and speed of the vehicle on the highway, the source cell RSU may notify the target RSU in advance of the above information, and the target RSU refers to the RSU determined by the source RSU according to the moving characteristics of the OBU. The source RSU may send the V2X resource configuration in the local cell to the target RSU through the interface, and the target RSU estimates the time when the OBU reaches the local cell, and allocates resources for the OBU, and reduces the interaction time of the OBU and the target cell RSU, that is, reduces the V2X service. The interrupt time, the target RSU allocates the same resources to the OBU as possible to the source RSU, and the source RSU notifies the OBU of the resource configuration of the target RSU. The source RSU can indicate to the OBU through an information field whether the resource configuration of the target RSU is the same: if they are the same, then After the OBU enters the target cell, the V2X communication is directly performed without requesting resources or reading the resource configuration information. If the target RSU cannot allocate the same resource to the OBU, the target RSU sends the resource configuration information to the source RSU, and the source RSU will receive the information. The resource configuration information is notified to the OBU, and the OBU is based on The received resource configuration information continues V2X communication in the target cell.
需要指出的是:上述源RSU和目标RSU之间信息的交互过程包括小区重选和切换流程,即OBU为空闲态或连接态。It should be noted that the information exchange process between the source RSU and the target RSU includes a cell reselection and a handover process, that is, the OBU is in an idle state or a connected state.
另外,在V2X中,OBU可以采用自主选择资源,即在资源池中选择所需资源,为了保证业务连续性,需要尽可能在相邻RSU覆盖内采用相同的资源池配置,且保证OBU在源RSU内使用的资源在目标RSU内不被占用,如果是RSU分配资源池,则RSU之间通过交互保证相邻小区资源池分配的一致性,如果是其他方法分配资源池,则采取一定方法(如OAM)保证相邻小区资源池分配的一致性。如果不能保证一致,则通过RSU间的交互,源RSU获取目标RSU的资源配置并通知OBU。In addition, in the V2X, the OBU can use the autonomously selected resources, that is, select the required resources in the resource pool. To ensure service continuity, the same resource pool configuration needs to be adopted within the adjacent RSU coverage as much as possible, and the OBU is guaranteed to be in the source. The resources used in the RSU are not occupied in the target RSU. If the RSU allocates a resource pool, the RSUs ensure the consistency of resource allocation in the neighboring cell resources through interaction. If other methods allocate resource pools, a certain method is adopted. Such as OAM) to ensure the consistency of resource allocation in neighboring cells. If the consistency is not guaranteed, the source RSU obtains the resource configuration of the target RSU and notifies the OBU through the interaction between the RSUs.
步骤S203,OBU接收参数并进行小区重选。In step S203, the OBU receives the parameters and performs cell reselection.
其中,OBU接收参数,并根据参数进行小区重选,在满足小区重选准则的前提下,OBU优先选择提供V2X业务的小区进行重选,即OBU将提供所需V2X业务的频率设为优先级最高的小区重选频率。小区包括:LTE覆盖小区或DSRC覆盖小区。The OBU receives the parameters and performs cell reselection according to the parameters. On the premise that the cell reselection criterion is met, the OBU preferentially selects the cell that provides the V2X service for reselection, that is, the OBU sets the frequency of providing the required V2X service as the priority. The highest cell reselection frequency. The cell includes: an LTE coverage cell or a DSRC coverage cell.
步骤S204,OBU向RSU上报信息;Step S204, the OBU reports the information to the RSU.
其中,OBU向RSU上报信息包括以下至少一种:正在接收或感兴趣接收的V2X业务标识,OBU能力,测量报告;其中:OBU能力包括以下至少一种:载波聚合CA能力,MBMS能力,DSRC能力,双连接DC能力,LTE和DSRC同时接收的能力;测量报告用于RSU判断OBU是否需要进行切换。The information reported by the OBU to the RSU includes at least one of the following: a V2X service identifier being received or interested in receiving, an OBU capability, and a measurement report; wherein: the OBU capability includes at least one of the following: carrier aggregation CA capability, MBMS capability, and DSRC capability. Dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities; measurement reports are used by the RSU to determine if the OBU needs to be handed over.
上报通过RRC信令或其它信令实现;上报条件为以下任意一种:OBU周期性上报,事件触发上报,或RSU请求OBU上报。The report is implemented by RRC signaling or other signaling. The reporting condition is any of the following: the OBU periodically reports, the event triggers the report, or the RSU requests the OBU to report.
步骤S205,RSU将OBU切换到目标小区。In step S205, the RSU switches the OBU to the target cell.
其中,RSU根据OBU上报信息和切换算法,选择目标小区,目标小区可以是LTE覆盖小区或DSRC覆盖小区,其中DSRC小区可通过以下任意一种进行标识:SSID,BSSID,HESSID.The RSU selects the target cell according to the OBU report information and the handover algorithm, and the target cell may be an LTE coverage cell or a DSRC coverage cell, where the DSRC cell may be identified by any one of the following: SSID, BSSID, HESSID.
RSU在满足切换准则的前提下,优先选择能够提供OBU接收或感兴趣接收的V2X业务的小区作为目标小区进行切换。On the premise that the handover criterion is met, the RSU preferentially selects a cell that can provide the V2X service received or received by the OBU as the target cell for handover.
本实施例还提供了一种路边单元RSU,包括:第一处理器,设置为依据车载单元OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,状态包括以下至少之一:空闲态、连接态。第一接收器,设置为接收OBU上报的信息;第一处理器,还设置为在OBU上报的信息满足第二预设条件,且OBU为连接态时,选择支持车联网业务的第二区域作为目标区域。The embodiment further provides a roadside unit RSU, comprising: a first processor, configured to preferentially select a target area supporting the access of the vehicle network V2X service according to a state of the onboard unit OBU, wherein the state comprises at least one of the following: Idle state, connected state. The first receiver is configured to receive the information reported by the OBU. The first processor is further configured to: when the information reported by the OBU meets the second preset condition, and the OBU is in the connected state, select the second area that supports the Internet service. target area.
本实施例提供了一种车载单元OBU,包括:第二处理器,依据车载单元OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,状态包括以下至少之一:空闲态、连接 态。第二接收器,设置为接收路边单元RSU发送的移动管理参数;第二处理器,还设置为在移动管理参数满足第二预设条件,且OBU为空闲态时,选择支持车联网业务的第一区域作为目标区域。The embodiment provides an onboard unit OBU, including: a second processor, preferentially selecting a target area supporting the access of the vehicle network V2X service according to the state of the onboard unit OBU, wherein the status includes at least one of the following: an idle state, a connection state. The second receiver is configured to receive the mobility management parameter sent by the roadside unit RSU; the second processor is further configured to: when the mobility management parameter meets the second preset condition, and the OBU is in an idle state, select to support the networked service The first area serves as the target area.
下面结合具体实施例对本发明可选实施例进行详细的说明;The optional embodiments of the present invention are described in detail below in conjunction with specific embodiments;
实施例1Example 1
本实施例的应用场景为:LTE->DRSC;其中,本应用场景中可细分为2个子场景:(1)目标小区只有DSRC覆盖;(2)目标小区有DSRC和LTE覆盖。The application scenario of this embodiment is: LTE->DRSC; wherein the application scenario can be subdivided into two sub-scenarios: (1) the target cell has only DSRC coverage; and (2) the target cell has DSRC and LTE coverage.
图5是根据本发明可选实施例在目标小区只有DSRC覆盖时实现V2X业务连续性的示意图,基于示意图5本实施例1方法的步骤包括:FIG. 5 is a schematic diagram of implementing V2X service continuity when a target cell has only DSRC coverage according to an alternative embodiment of the present invention. Based on the schematic diagram, the steps of the method in the first embodiment include:
步骤S301:RRC-Idle OBU cell reselect小区重选;Step S301: RRC-Idle OBU cell reselect cell reselection;
其中,空闲态OBU根据源LTE小区中的广播消息或RRC专用信令获取小区重选参数:如优先级、R准则参数等,当空闲态OBU移动出LTE小区,根据上述参数重选到目标DSRC小区,这里的重点是:LTE需要将目标DSRC小区标识设为较高优先级,或者通过R准则参数的设定使OBU可以重选到DSRC小区。The idle state OBU obtains a cell reselection parameter according to a broadcast message or an RRC dedicated signaling in the source LTE cell, such as a priority, an R criterion parameter, etc., when the idle state OBU moves out of the LTE cell, and reselects to the target DSRC according to the foregoing parameter. In the cell, the key point here is that LTE needs to set the target DSRC cell identifier to a higher priority, or the OBU can be reselected to the DSRC cell by setting the R criterion parameter.
空闲态OBU的小区重选完全由OBU自己控制唯一的参考是源LTE小区提供的重选参数,OBU的用户可以手动选择小区而不考虑重选参数,即用户手动选择的优先级最高。The cell reselection of the idle state OBU is completely controlled by the OBU itself. The only reference is the reselection parameter provided by the source LTE cell. The user of the OBU can manually select the cell without considering the reselection parameter, that is, the user manually selects the highest priority.
另外,这里还包括另外的子场景:如目标小区有不支持V2X业务的E-UTRAN/UTRAN/GREAN覆盖,此时OBU仍需重选到DSRC小区,如果OBU支持CS业务,则可以将CS业务驻留在非DSRC小区。In addition, there is another sub-scenario: if the target cell has E-UTRAN/UTRAN/GREAN coverage that does not support V2X services, the OBU still needs to reselect to the DSRC cell. If the OBU supports the CS service, the CS service can be used. Residing in a non-DSRC cell.
定义OBU能力,或者OBU分级别:Define OBU capabilities, or OBU levels:
Category 1:Normal old UE+V2X应用层;Category 1: Normal old UE+V2X application layer;
Category 2:V2X capable UE+Normal Service(是否存在:V2X capable UE only?);Category 2: V2X capable UE+Normal Service (is it present: V2X capable UE only?);
Category 2.1:5.9G LTE V2X+5.9G DSRC)(是否存在:不支持2.6G);Category 2.1: 5.9G LTE V2X+5.9G DSRC) (whether it exists: 2.6G is not supported);
Category 2.2:5.9G LTE V2X only(是否存在:不支持2.6G?是否存在:仅支持5.9G DSRC only?);Category 2.2: 5.9G LTE V2X only (Does it exist: Does it support 2.6G? Does it exist: only supports 5.9G DSRC only?);
Category 2.3:2.6G LTE V2X only(是否存在:不支持5.9G DSRC?);Category 2.3: 2.6G LTE V2X only (Does it exist: Does not support 5.9G DSRC?);
Category 2.4 2.6G LTE V2X+5.9G DSRC;Category 2.4 2.6G LTE V2X+5.9G DSRC;
Category 2.5 2.6G LTE V2X+5.9G LTE V2X;Category 2.5 2.6G LTE V2X+5.9G LTE V2X;
Category 2.6 2.6G LTE V2X+5.9G LTE V2X+5.9G DSRC;Category 2.6 2.6G LTE V2X+5.9G LTE V2X+5.9G DSRC;
为了区分是否支持V2X业务,LTE小区可在系统广播消息中指示:是否支持V2X业务。 ==>New SIB。UE根据自身能力判断;In order to distinguish whether the V2X service is supported, the LTE cell may indicate in the system broadcast message whether the V2X service is supported. ==>New SIB. The UE judges according to its own capabilities;
步骤S302:RRC-Connected OBU handover切换;Step S302: RRC-Connected OBU handover;
其中,对于连接态OBU,由源LTE基站负责将OBU切换到目标小区。UE需要上报其OBU能力给eNB为了实现切换到DSRC目标小区,需要源LTE基站和DSRC的AP之间可以通信:For the connected state OBU, the source LTE base station is responsible for switching the OBU to the target cell. The UE needs to report its OBU capability to the eNB to enable communication between the source LTE base station and the DSRC AP in order to implement handover to the DSRC target cell:
方式1:LTE eNB和AP之间有直接接口,则通过类似X2切换的过程实现;Manner 1: The direct interface between the LTE eNB and the AP is implemented through a process similar to the X2 handover.
方式2:AP连接到P-GW(trusted non-3GPP access)或AP通过ePDG连接到P-GW(untrusted non-3GPP access),则通过NAS信令交互实现切换;Mode 2: The AP is connected to the P-GW (trusted non-3GPP access) or the AP is connected to the P-GW (untrusted non-3GPP access), and the handover is implemented through NAS signaling interaction;
方式3:仅应用层互联(如AP和eNB接入到相同的交通业务中心),通过应用层交互实现切换。Mode 3: Only application layer interconnection (such as AP and eNB access to the same traffic service center), and switching through application layer interaction.
LTE eNB和AP之间的交互的内容至少包括:是否支持V2X。The content of the interaction between the LTE eNB and the AP includes at least: whether V2X is supported.
图6是根据本发明可选实施例的在目标小区有DSRC和LTE覆盖时实现V2X业务连续性的示意图,基于该示意图6本实施例方法的步骤包括:FIG. 6 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an alternative embodiment of the present invention. Based on the schematic diagram, the steps of the method in this embodiment include:
步骤S401:RRC-Idle OBU cell reselect小区重选;Step S401: RRC-Idle OBU cell reselect cell reselection;
其中,网络侧发送的小区重选优先级列表中除了DSRC小区标识(SSID)还包括LTE的小区标识,二者可以具有相同优先级或LTE小区优先级更高(源基站根据目标小区负载、信号质量等确定),空闲态的OBU根据自身能力分为以下情况:The cell reselection priority list sent by the network side includes the cell identifier of the LTE in addition to the DSRC cell identifier (SSID), and the two may have the same priority or the LTE cell priority is higher (the source base station according to the target cell load and signal) The quality is determined by the following conditions: The OBU in the idle state is divided into the following cases according to its own capabilities:
(a)OBU只支持单个无线接入,即OBU只能支持LTE或WLAN的接入,如果LTE优先级高,则OBU重选到LTE小区,如果优先级相同,则OBU根据预定义规则重选到信号质量好的小区;(a) The OBU supports only a single radio access, that is, the OBU can only support LTE or WLAN access. If the LTE priority is high, the OBU reselects to the LTE cell. If the priorities are the same, the OBU reselects according to the predefined rules. To a cell with good signal quality;
(b)OBU支持同时多个无线接入,则OBU可同时通过LTE小区和DSRC小区接收信令和数据。(b) The OBU supports simultaneous multiple radio accesses, and the OBU can receive signaling and data through both the LTE cell and the DSRC cell.
步骤S402:RRC-Connected OBU handover切换;Step S402: RRC-Connected OBU handover;
其中,对于连接态OBU,由源LTE基站负责将OBU切换到目标小区。根据OBU的能力和目标小区负载、信号质量等,源eNB选择目标小区,一般基于以下原则:For the connected state OBU, the source LTE base station is responsible for switching the OBU to the target cell. According to the capabilities of the OBU and the target cell load, signal quality, etc., the source eNB selects the target cell, which is generally based on the following principles:
切换的目的是:eNB让该UE进入new cell继续V2X业务。此时,eNB认为该OBU的V2X业务优先级高于Normal业务。就是说,如果new cell必须支持V2X,哪怕放弃Normal业务。比如:OBU仅支持5.9G V2X时候,有两个candidate cell,一个是Non-V2X LTE cell,另一个是DSRC,则Target cell=DSRC;The purpose of the handover is that the eNB allows the UE to enter the new cell to continue the V2X service. At this time, the eNB considers that the V2X service priority of the OBU is higher than that of the Normal service. That is to say, if the new cell must support V2X, even if it gives up the Normal business. For example, when the OBU only supports 5.9G V2X, there are two candidate cells, one is Non-V2X LTE cell, and the other is DSRC, then Target cell=DSRC;
eNB将UE切换到目标cell,核心发明点是:保证OBU的V2X业务,哪怕放弃普通业务。The eNB switches the UE to the target cell. The core invention point is to ensure the V2X service of the OBU, even if it abandons the normal service.
(a)OBU只支持单个无线接入,源eNB优选LTE小区作为目标小区,如果目标LTE小 区的负载过大/信号质量差,源eNB可选择DSRC小区作为目标小区;(a) The OBU only supports a single radio access, and the source eNB prefers the LTE cell as the target cell if the target LTE is small. The load of the zone is too large/signal quality is poor, and the source eNB can select the DSRC cell as the target cell;
(b)OBU支持同时多个无线接入,源eNB优选LTE小区作为目标小区,同时指示OBU:目标区域有DSRC覆盖,OBU切换到目标LTE小区后可根据预定义准则和自身需要接入到DSRC小区;或者源eNB选择DSRC小区作为目标小区,同时指示OBU:目标区域有LTE覆盖,OBU切换到目标DSRC小区后可根据预定义准则和自身需要接入到LTE小区。(b) The OBU supports multiple radio accesses at the same time. The source eNB prefers the LTE cell as the target cell, and indicates that the OBU: the target area has DSRC coverage. After the OBU is switched to the target LTE cell, the OBU can access the DSRC according to predefined criteria and needs. The cell or the source eNB selects the DSRC cell as the target cell, and indicates the OBU: the target area has LTE coverage. After the OBU switches to the target DSRC cell, the OBU can access the LTE cell according to the predefined criteria and its own needs.
为了实现切换到DSRC目标小区,需要源LTE基站和DSRC的AP之间可以通信:In order to implement handover to the DSRC target cell, communication between the source LTE base station and the DSRC AP is required:
方式1:LTE eNB和AP之间有直接接口,则通过类似X2切换的过程实现;Manner 1: The direct interface between the LTE eNB and the AP is implemented through a process similar to the X2 handover.
方式2:AP连接到P-GW(trusted non-3GPP access)或AP通过ePDG连接到P-GW(untrusted non-3GPP access),则通过NAS信令交互实现切换;Mode 2: The AP is connected to the P-GW (trusted non-3GPP access) or the AP is connected to the P-GW (untrusted non-3GPP access), and the handover is implemented through NAS signaling interaction;
方式3:仅应用层互联(如AP和eNB到相同的交通业务中心),通过应用层交互实现切换。Mode 3: Application layer interconnection only (such as AP and eNB to the same traffic service center), and switching is implemented through application layer interaction.
实施例2Example 2
本实施例中的应用场景为DRSC->LTE,其中,该应用场景也包括两个子场景:(1)目标小区只有LTE覆盖;(2)目标小区有DSRC和LTE覆盖。The application scenario in this embodiment is DRSC->LTE, where the application scenario also includes two sub-scenarios: (1) the target cell has only LTE coverage; and (2) the target cell has DSRC and LTE coverage.
图7是根据本发明可选实施例的在目标小区只有LTE覆盖时实现V2X业务连续性的示意图,基于该示意图7本实施例方法的步骤包括:FIG. 7 is a schematic diagram of implementing V2X service continuity when the target cell has only LTE coverage according to an optional embodiment of the present invention. Based on the schematic diagram, the steps of the method in this embodiment include:
步骤S501:空闲OBU cell reselect;Step S501: idle OBU cell reselect;
其中,DSRC小区中的空闲态OBU小区重选准则不清楚,如果和LTE小区重选类似,则采用3.1.1-1)中的方法实现小区重选;否则需要根据DSRC的规则进行,例如OBU离开DSRC覆盖进入LTE覆盖,OBU检测到LTE小区,且支持V2X(广播消息中指示),则OBU小区选择到LTE小区。The criterion for the reselection of the idle state OBU cell in the DSRC cell is unclear. If the reselection is similar to the LTE cell reselection, the cell reselection is implemented by using the method in 3.1.1-1); otherwise, the rule is performed according to the DSRC rule, for example, the OBU. After leaving the DSRC coverage to enter the LTE coverage, the OBU detects the LTE cell, and supports V2X (indicated in the broadcast message), the OBU cell selects to the LTE cell.
空闲态OBU的小区重选完全由OBU自己控制,唯一的参考是源LTE小区提供的重选参数,OBU的用户可以手动选择小区而不考虑重选参数,即用户的优先级最高。The cell reselection of the idle state OBU is completely controlled by the OBU itself. The only reference is the reselection parameter provided by the source LTE cell. The user of the OBU can manually select the cell without considering the reselection parameter, that is, the user has the highest priority.
另外,这里还包括另外的子场景:如目标小区有不支持V2X业务的E-UTRAN/UTRAN/GREAN覆盖,为了区别支持V2X的小区,支持V2X业务的小区系统广播消息中需要显式指示:“支持V2X”。In addition, there are also additional sub-scenarios: if the target cell has E-UTRAN/UTRAN/GREAN coverage that does not support V2X services, in order to distinguish between cells supporting V2X, the cell system broadcast message supporting V2X service needs to be explicitly indicated: Support for V2X".
步骤S502:连接态OBU handover;Step S502: Connected state OBU handover;
其中,对于连接态OBU,由DSRC AP负责将OBU切换到目标小区。为了实现切换到LTE目标小区,需要源LTE基站和DSRC的AP之间可以通信:方式1是LTE eNB和AP之间有直接接口,则通过类似X2切换的过程实现;方式2是AP连接到P-GW(trusted non-3GPP access)或AP通过ePDG连接到P-GW(untrusted non-3GPP access),则通过NAS信令交互实现切换; 方式3是仅应用层互联(如AP和eNB到相同的交通业务中心),通过应用层交互实现切换。LTE eNB和AP之间交互的内容至少包括:是否支持V2X;For the connected state OBU, the DSRC AP is responsible for switching the OBU to the target cell. In order to implement the handover to the LTE target cell, the source LTE base station and the DSRC AP may be required to communicate with each other: mode 1 is a direct interface between the LTE eNB and the AP, and is implemented by a process similar to X2 handover; mode 2 is an AP connection to the P. - GW (trusted non-3GPP access) or AP is connected to the P-GW (untrusted non-3GPP access) through ePDG, and the handover is implemented through NAS signaling interaction; Mode 3 is an application layer only interconnection (such as an AP and an eNB to the same traffic service center), and the switching is implemented through application layer interaction. The content of the interaction between the LTE eNB and the AP includes at least: whether V2X is supported;
如果DSRC AP和LTE eNB之间没有接口,则无法实现切换,OBU与AP断开连接进入LTE小区,小区选择到LTE小区。If there is no interface between the DSRC AP and the LTE eNB, the handover cannot be implemented, and the OBU disconnects from the AP and enters the LTE cell, and the cell selects the LTE cell.
图8是根据本发明可选实施例的在目标小区有DSRC和LTE覆盖时实现V2X业务连续性的示意图,基于该示意图8本实施例的方法步骤包括:FIG. 8 is a schematic diagram of implementing V2X service continuity when a target cell has DSRC and LTE coverage according to an optional embodiment of the present invention.
步骤S601:空闲态OBU cell reselect;Step S601: idle state OBU cell reselect;
DSRC小区中的空闲态OBU小区重选准则不清楚,如果和LTE小区重选类似,则采用3.1.2-1)中的方法实现小区重选;否则需要根据DSRC的规则进行,例如OBU离开DSRC覆盖进入LTE/DSRC覆盖,OBU检测到LTE/DSRC小区,且支持V2X(广播消息中指示),空闲态的OBU根据自身能力分为以下情况:The idle state OBU cell reselection criterion in the DSRC cell is unclear. If it is similar to the LTE cell reselection, the cell reselection is implemented by the method in 3.1.2-1); otherwise, it needs to be performed according to the DSRC rule, for example, the OBU leaves the DSRC. The coverage enters the LTE/DSRC coverage, the OBU detects the LTE/DSRC cell, and supports V2X (indicated in the broadcast message). The OBU in the idle state is classified into the following cases according to its own capabilities:
(a)OBU只支持单个无线接入,即OBU只能支持LTE或WLAN的接入,则OBU优先重选到LTE小区,或者OBU根据预定义规则重选到信号质量好的小区;(a) The OBU supports only a single radio access, that is, the OBU can only support LTE or WLAN access, and the OBU is preferentially reselected to the LTE cell, or the OBU reselects the cell with good signal quality according to a predefined rule;
(b)OBU支持同时多个无线接入,则OBU可同时通过LTE小区和DSRC小区接收信令和数据。(b) The OBU supports simultaneous multiple radio accesses, and the OBU can receive signaling and data through both the LTE cell and the DSRC cell.
步骤S602:连接态OBU handover;Step S602: Connected state OBU handover;
对于连接态OBU,由DSRC AP负责将OBU切换到目标小区。根据OBU的能力和目标小区负载、信号质量等,AP选择目标小区,一般基于以下原则:For the connected OBU, the DSRC AP is responsible for switching the OBU to the target cell. According to the capabilities of the OBU and the target cell load, signal quality, etc., the AP selects the target cell, which is generally based on the following principles:
(a)OBU只支持单个无线接入,AP优选LTE小区作为目标小区,如果目标LTE小区的负载过大/信号质量差,源AP可选择DSRC小区作为目标小区;(a) The OBU only supports a single radio access, and the AP prefers the LTE cell as the target cell. If the target LTE cell has excessive load/signal quality, the source AP may select the DSRC cell as the target cell.
(b)OBU支持同时多个无线接入,源AP优选LTE小区作为目标小区,同时指示OBU:目标区域有DSRC覆盖,OBU切换到目标LTE小区后可根据预定义准则和自身需要接入到DSRC小区;或者源AP选择DSRC小区作为目标小区,同时指示OBU:目标区域有LTE覆盖,OBU切换到目标DSRC小区后可根据预定义准则和自身需要接入到LTE小区。(b) The OBU supports multiple radio accesses at the same time. The source AP prefers the LTE cell as the target cell, and indicates that the OBU: the target area has DSRC coverage. After the OBU is switched to the target LTE cell, the OBU can access the DSRC according to predefined criteria and needs. The cell or the source AP selects the DSRC cell as the target cell, and indicates the OBU: the target area has LTE coverage. After the OBU is switched to the target DSRC cell, the OBU can access the LTE cell according to the predefined criteria and its own needs.
为了实现切换到DSRC目标小区,需要源LTE基站和DSRC的AP之间可以通信:直接/通过网关P-GW/通过应用层交互。In order to implement handover to the DSRC target cell, it is required that the source LTE base station and the AP of the DSRC can communicate: directly/via the gateway P-GW/interact through the application layer.
如果DSRC AP和LTE eNB之间无法通信,则无法实现切换,OBU与AP断开连接进入混合小区,OBU根据自身能力、测量结果和预定义规则,OBU小区选择到LTE/DSRC/LTE+DSRC小区。If the DSRC AP and the LTE eNB cannot communicate with each other, the switch cannot be implemented. The OBU disconnects from the AP and enters the hybrid cell. The OBU selects the LTE/DSRC/LTE+DSRC cell according to its own capabilities, measurement results, and predefined rules. .
步骤S603:DSRC AP位于LTE覆盖内;Step S603: The DSRC AP is located in the LTE coverage.
其中,图9是根据本发明实施例的当DSRC AP位于LTE覆盖内时实现V2X业务连续性的示意图,如图9所示,LTE eNB为了offload V2X业务到DSRC,可以切换OBU到DSRC, 或者OBU重选到DSRC AP.同样,DSRC AP覆盖内的OBU移动出AP,也可以切换或小区重选到LTE.位于DSRC内的OBU,因为同时也在LTE的覆盖,对于双接收机的OBU可以接收LTE的控制信令(如SIB)或数据,同时也可以上传信令/数据到eNB,需要注意的是:如果OBU是半双工模式(如D2D终端),则OBU在DSRC内部没有收发信令/数据时,可以收发LTE的信令/数据,同时需要考虑LTE DRX/测量间隔等设置的要求。9 is a schematic diagram of implementing V2X service continuity when a DSRC AP is located in an LTE coverage according to an embodiment of the present invention. As shown in FIG. 9, an LTE eNB may switch an OBU to a DSRC in order to offload a V2X service to a DSRC. Or the OBU reselects to the DSRC AP. Similarly, the OBU within the DSRC AP coverage moves out of the AP, and can also switch or reselect the cell to LTE. The OBU located in the DSRC, because it is also in the coverage of LTE, for the OBU of the dual receiver. It can receive LTE control signaling (such as SIB) or data, and can also upload signaling/data to the eNB. Note that if the OBU is in half-duplex mode (such as D2D terminal), the OBU does not receive and receive within the DSRC. When signaling/data, the signaling/data of LTE can be sent and received, and the requirements of settings such as LTE DRX/measurement interval need to be considered.
实施例3Example 3
图10是根据本实施例的DSRC之间的切换时实现V2X业务连续性的示意图,如图10所示,通过上述接口传递业务连续性相关参数,并进行小区重选或切换,报了保证V2X业务连续性,对于空闲态OBU:OBU将提供V2X业务的频率作为优先级最高的小区重选频率;对于连接态OBU:RSU优先选择提供OBU所需V2X业务的小区作为目标小区进行切换。FIG. 10 is a schematic diagram of implementing V2X service continuity when switching between DSRCs according to the embodiment. As shown in FIG. 10, the service continuity related parameters are transmitted through the foregoing interface, and cell reselection or handover is performed, and the V2X is guaranteed. Service continuity, for the idle state OBU: the frequency at which the OBU provides the V2X service is taken as the cell reselection frequency with the highest priority; for the connected state OBU: the RSU preferentially selects the cell that provides the V2X service required by the OBU as the target cell for handover.
DSRC-RSU之间存在接口,上述相关参数可通过D-RSU之间的接口传递。考虑到OBU移动的规律性,如在高速路上车辆方向、速度等一般变化不大,源小区RSU可以将上述信息事先通知目标RSU,目标RSU是指源RSU根据OBU的移动特征确定的RSU,进一步源RSU可以将本小区内的V2X资源配置通过接口发送给目标RSU,目标RSU估计OBU到达本小区的时间,并为OBU分配资源,考虑到减少OBU和目标小区RSU的交互时间,即降低V2X业务的中断时间,目标RSU尽可能与源RSU为OBU分配相同的资源,源RSU通知OBU目标RSU的资源配置,源RSU可通过一信息字段向OBU指示目标RSU的资源配置是否相同:如果相同,则OBU进入目标小区后不用请求资源或读取资源配置信息,而直接继续进行V2X通信,如果目标RSU不能为OBU分配相同的资源,则目标RSU向源RSU发送资源配置信息,源RSU将收到的资源配置信息通知OBU,OBU根据收到的资源配置信息在目标小区继续进行V2X通信。There is an interface between the DSRC-RSUs, and the above related parameters can be transmitted through the interface between the D-RSUs. Considering the regularity of the OBU movement, such as the general change of the direction and speed of the vehicle on the highway, the source cell RSU may notify the target RSU in advance of the above information, and the target RSU refers to the RSU determined by the source RSU according to the moving characteristics of the OBU. The source RSU may send the V2X resource configuration in the local cell to the target RSU through the interface, and the target RSU estimates the time when the OBU reaches the local cell, and allocates resources for the OBU, and reduces the interaction time of the OBU and the target cell RSU, that is, reduces the V2X service. The interrupt time, the target RSU allocates the same resources to the OBU as possible to the source RSU, and the source RSU notifies the OBU of the resource configuration of the target RSU. The source RSU can indicate to the OBU through an information field whether the resource configuration of the target RSU is the same: if they are the same, then After the OBU enters the target cell, the V2X communication is directly performed without requesting resources or reading the resource configuration information. If the target RSU cannot allocate the same resource to the OBU, the target RSU sends the resource configuration information to the source RSU, and the source RSU will receive the information. The resource configuration information notifies the OBU that the OBU continues V2X communication in the target cell according to the received resource configuration information.
实施例4Example 4
本实施例的应用场景为:LTE<->LTE;The application scenario of this embodiment is: LTE<->LTE;
图11是根据本发明可选实施例的LTE之间切换时实现V2X业务连续性的示意图,如图11所示,采用现有LTE中业务连续性方案解决,保证V2X业务连续性,对于空闲态OBU:OBU将提供V2X业务的频率作为优先级最高的小区重选频率;对于连接态OBU:RSU优先选择提供OBU所需V2X业务的小区作为目标小区进行切换。FIG. 11 is a schematic diagram of implementing V2X service continuity when switching between LTEs according to an alternative embodiment of the present invention. As shown in FIG. 11, the service continuity solution in the existing LTE is used to ensure V2X service continuity, and for idle state. OBU: The OBU will provide the frequency of the V2X service as the cell reselection frequency with the highest priority. For the connected state OBU: The RSU preferentially selects the cell that provides the V2X service required by the OBU as the target cell for handover.
LTE-RSU之间存在接口,上述相关参数可通过L-RSU之间的接口传递。考虑到OBU移动的规律性,如在高速路上车辆方向、速度等一般变化不大,源小区RSU可以将上述信息事先通知目标RSU,目标RSU是指源RSU根据OBU的移动特征确定的RSU,进一步源RSU可以将本小区内的V2X资源配置通过接口发送给目标RSU,目标RSU估计OBU到达本小区的时间,并为OBU分配资源,考虑到减少OBU和目标小区RSU的交互时间,即降低V2X业务的中断时间,目标RSU尽可能与源RSU为OBU分配相同的资源,源RSU通知OBU目标RSU的资源配置,源RSU可通过一信息字段向OBU指示目标RSU的资源配置是否相同:如果相同,则OBU进入目标小区后不用请求资源或读取资源配置信息,而直接继续进行V2X 通信,如果目标RSU不能为OBU分配相同的资源,则目标RSU向源RSU发送资源配置信息,源RSU将收到的资源配置信息通知OBU,OBU根据收到的资源配置信息在目标小区继续进行V2X通信。There is an interface between the LTE-RSUs, and the above related parameters can be transmitted through the interface between the L-RSUs. Considering the regularity of the OBU movement, such as the general change of the direction and speed of the vehicle on the highway, the source cell RSU may notify the target RSU in advance of the above information, and the target RSU refers to the RSU determined by the source RSU according to the moving characteristics of the OBU. The source RSU may send the V2X resource configuration in the local cell to the target RSU through the interface, and the target RSU estimates the time when the OBU reaches the local cell, and allocates resources for the OBU, and reduces the interaction time of the OBU and the target cell RSU, that is, reduces the V2X service. The interrupt time, the target RSU allocates the same resources to the OBU as possible to the source RSU, and the source RSU notifies the OBU of the resource configuration of the target RSU. The source RSU can indicate to the OBU through an information field whether the resource configuration of the target RSU is the same: if they are the same, then After the OBU enters the target cell, it does not need to request resources or read resource configuration information, but directly proceeds to V2X. If the target RSU cannot allocate the same resource to the OBU, the target RSU sends the resource configuration information to the source RSU, and the source RSU notifies the OBU of the received resource configuration information, and the OBU continues the V2X in the target cell according to the received resource configuration information. Communication.
在LTE V2X中,OBU可以采用自主选择资源,即在资源池中选择所需资源,为了保证业务连续性,需要尽可能在相邻RSU覆盖内采用相同的资源池配置,且保证OBU在源RSU内使用的资源在目标RSU内不被占用,如果是RSU分配资源池,则RSU之间通过交互保证相邻小区资源池分配的一致性,如果是其他方法分配资源池,则采取一定方法(如OAM)保证相邻小区资源池分配的一致性。如果不能保证一致,则通过RSU间的交互,源RSU获取目标RSU的资源配置并通知OBU;In LTE V2X, the OBU can select resources on its own, that is, select the required resources in the resource pool. To ensure service continuity, you need to use the same resource pool configuration in the adjacent RSU coverage as much as possible, and ensure that the OBU is in the source RSU. The resources used in the target RSU are not occupied. If the RSU allocates a resource pool, the RSUs ensure the consistency of resource allocation in the neighboring cells through interaction. If other methods allocate resource pools, a certain method is adopted. OAM) ensures the consistency of resource allocation in neighboring cells. If the consistency is not guaranteed, the source RSU obtains the resource configuration of the target RSU and notifies the OBU through the interaction between the RSUs;
图12是根据本发明实施例的V2X业务连续性的装置结构框图,如图12所示,该装置包括:FIG. 12 is a structural block diagram of an apparatus for V2X service continuity according to an embodiment of the present invention. As shown in FIG. 12, the apparatus includes:
第三接收器1202,设置为接收OBU发送的上报信息以及通过RSU间接口或EPC接口或应用层接口接收相邻RSU的信息;The third receiver 1202 is configured to receive the report information sent by the OBU and receive the information of the neighboring RSU through the inter-RSU interface or the EPC interface or the application layer interface.
第一发送器1204,设置为向OBU发送V2移动管理参数,本小区和/或邻小区V2X资源配置参数;The first transmitter 1204 is configured to send, to the OBU, a V2 mobility management parameter, a local cell and/or a neighboring cell V2X resource configuration parameter;
第三处理器1206,设置为对OBU进行切换操作。The third processor 1206 is configured to perform a switching operation on the OBU.
上述装置包括:为LTE RSU和DSRC RSU,其中LTE RSU包括:E-UTRAN中的基站eNB或静止UE;The foregoing apparatus includes: an LTE RSU and a DSRC RSU, where the LTE RSU includes: a base station eNB or a stationary UE in the E-UTRAN;
图13是根据本发明可选实施例的V2X业务连续性装置的结构框图,如图13所示,该装置包括:FIG. 13 is a structural block diagram of a V2X service continuity apparatus according to an alternative embodiment of the present invention. As shown in FIG. 13, the apparatus includes:
第四接收器1302,设置为接收RSU发送的移动管理参数和V2X资源配置参数以及接收RSU的切换消息;a fourth receiver 1302, configured to receive a mobility management parameter and a V2X resource configuration parameter sent by the RSU, and a handover message that receives the RSU;
第一发送器1304,设置为向RSU上报信息;The first transmitter 1304 is configured to report information to the RSU.
第四处理器1306,设置为测量以及小区重选操作。The fourth processor 1306 is configured to perform measurement and cell reselection operations.
上述装置包括为LTE OBU和DSRC OBU,其中LTE RSU包括:E-UTRAN中的用户设备UE或移动终端。The above apparatus is included as an LTE OBU and a DSRC OBU, where the LTE RSU includes: a user equipment UE or a mobile terminal in the E-UTRAN.
其中,LTE-RSU和DSRC-RSU用于;进行信息交互。Among them, LTE-RSU and DSRC-RSU are used for information interaction.
OBU设置为接收LTE-RSU和DSRC-RSU发送的小区重选参数和V2X资源配置参数,根据收到的小区重选参数进行小区重选,向LTE-RSU和DSRC-RSU发送上报消息。The OBU is configured to receive the cell reselection parameter and the V2X resource configuration parameter sent by the LTE-RSU and the DSRC-RSU, perform cell reselection according to the received cell reselection parameter, and send a report message to the LTE-RSU and the DSRC-RSU.
本发明的实施例还提供了一种存储介质。可选地,在本实施例中,上述存储介质可以被设置为存储用于执行以下步骤的程序代码: Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:
S1:车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网V2X业务接入的目标区域。S1: The onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the access of the vehicle network V2X service according to the state of the OBU.
可选地,本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例,本实施例在此不再赘述。For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.
显然,本领域的技术人员应该明白,上述的本发明的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本发明不限制于任何特定的硬件和软件结合。It will be apparent to those skilled in the art that the various 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. Thus, the invention is not limited to any specific combination of hardware and software.
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
工业实用性Industrial applicability
通过本发明实施例,采用车载单元OBU或路边单元RSU依据OBU的状态优先选择支持车联网业务接入的目标区域,从而可以根据OBU的不同状态,选择支持车联网业务接入的目标区域的方式,解决了相关技术中车辆在DSRC覆盖区域和LTE覆盖区域间移动时,该车辆的车联网业务难以连续执行的问题,提高了车载单元OBU车联网业务执行的效率。 According to the embodiment of the present invention, the on-board unit OBU or the roadside unit RSU preferentially selects the target area supporting the access of the vehicle networking service according to the state of the OBU, so that the target area supporting the access of the vehicle networking service can be selected according to different states of the OBU. The method solves the problem that the vehicle networking service of the vehicle is difficult to be continuously executed when the vehicle moves between the DSRC coverage area and the LTE coverage area in the related art, and improves the efficiency of the on-board unit OBU vehicle networking service execution.

Claims (25)

  1. 一种车载单元OBU目标区域的选择方法,包括:A method for selecting an OBU target area of an onboard unit includes:
    车载单元OBU或路边单元RSU依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。The onboard unit OBU or the roadside unit RSU preferentially selects a target area supporting the access of the vehicle network V2X service according to the state of the OBU, wherein the status includes at least one of the following: an idle state and a connected state.
  2. 根据权利要求1所述的方法,其中,依据所述OBU的状态按照以下之一预设策略选择支持车联网业务接入的目标区域:The method according to claim 1, wherein the target area supporting the access of the Internet of Vehicles service is selected according to one of the following preset policies according to the state of the OBU:
    在所述OBU为空闲态时,所述OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为所述目标区域;When the OBU is in an idle state, the OBU selects a first area supporting the Internet of Vehicle service as the target area when the mobile management parameter sent by the received roadside unit RSU satisfies the first preset condition;
    在所述OBU为连接态时,所述RSU根据接收到的所述OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为所述目标区域。When the OBU is in the connected state, the RSU selects the second area supporting the Internet of Vehicle service as the target area when the received information reported by the OBU satisfies the second preset condition.
  3. 根据权利要求2所述的方法,其中,所述移动管理参数包括以下至少之一:参考信号接收功率RSRP门限、参考信号接收质量RSRQ门限、频率优先级、小区重选门限、专用短距离通信DSRC信道利用率、专用短距离通信回传路线DSRC backhaul上/下行速率、DSRC信标接收信号强度指示RSSI、DSRC标识。The method according to claim 2, wherein the mobility management parameter comprises at least one of: a reference signal received power RSRP threshold, a reference signal received quality RSRQ threshold, a frequency priority, a cell reselection threshold, a dedicated short range communication DSRC Channel utilization, dedicated short-range communication backhaul route DSRC backhaul uplink/downlink rate, DSRC beacon received signal strength indication RSSI, DSRC identification.
  4. 根据权利要求3所述的方法,其中,The method of claim 3, wherein
    所述RSRP门限和所述RSRQ门限用于LTE覆盖小区的测量;The RSRP threshold and the RSRQ threshold are used for measurement of an LTE coverage cell;
    所述频率优先级和所述小区重选门限用于长期演进LTE小区间重选;The frequency priority and the cell reselection threshold are used for long term evolution LTE inter-cell reselection;
    所述DSRC信道利用率、所述DSRC backhaul上/下行速率和所述DSRC信标接收信号强度指示RSSI用于DSRC覆盖区域的信号质量测量;The DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon received signal strength indication RSSI are used for signal quality measurement of the DSRC coverage area;
    其中,所述DSRC标识包括以下至少一种:服务集标识SSID、基本服务集标识BSSID、同类扩展服务集标识HESSID。The DSRC identifier 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.
  5. 根据权利要求2所述的方法,其中,所述OBU上报的信息包括以下至少之一:所述OBU正在接收或感兴趣接收的车联网V2X业务标识、所述OBU的能力、测量报告,其中,所述测量报告为所述RSU判断是否需要进行选择的依据。The method of claim 2, wherein the information reported by the OBU comprises at least one of: an Internet of Vehicles V2X service identifier that the OBU is receiving or interested in receiving, an capability of the OBU, a measurement report, where The measurement report is a basis for the RSU to determine whether a selection is needed.
  6. 根据权利要求5所述的方法,其中,所述OBU的能力包括以下至少之一:载波聚合CA能力、多媒体广播多播MBMS能力、DSRC能力、双连接DC能力、LTE和DSRC同时接收的能力。The method of claim 5, wherein the capabilities of the OBU comprise at least one of: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities.
  7. 根据权利要求1所述的方法,其中,所述OBU的空闲态是指所述OBU仅允许接收RSU发送的信息而不允许向所述RSU发送信息,所述OBU的连接态是指所述OBU既允许接收所述RSU发送的信息也允许向所述RSU发送信息。The method according to claim 1, wherein the idle state of the OBU means that the OBU only allows receiving information transmitted by the RSU and does not allow information to be sent to the RSU, and the connected state of the OBU refers to the OBU Both receiving information sent by the RSU and sending information to the RSU are allowed.
  8. 根据权利要求1至7任一项所述的方法,其中,所述目标区域为LTE覆盖区域或DSRC覆盖区域。 The method according to any one of claims 1 to 7, wherein the target area is an LTE coverage area or a DSRC coverage area.
  9. 根据权利要求2所述的方法,其中,所述OBU在所属的源RSU和目标RSU之间进行信息交互,其中,所述交互的信息包括以下至少之一:OBU接收或感兴趣接收的V2X业务标识信息,OBU接收或感兴趣接收的V2X业务配置信息、OBU运动参数、V2X业务资源池配置;所述OBU运动参数包括以下至少之一:OBU运动方向、OBU位置、OBU运动速度、OBU加速度。The method according to claim 2, wherein the OBU performs information interaction between the associated source RSU and the target RSU, wherein the information of the interaction includes at least one of the following: the V2X service received or received by the OBU. The identification information, the V2X service configuration information received by the OBU or the receiver, the OBU motion parameter, and the V2X service resource pool configuration; the OBU motion parameter includes at least one of the following: an OBU motion direction, an OBU position, an OBU motion speed, and an OBU acceleration.
  10. 根据权利要求1所述的方法,其中,在车载单元OBU或路边单元RSU依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域之后,所述方法还包括:The method according to claim 1, wherein after the on-board unit OBU or the roadside unit RSU preferentially selects a target area supporting the vehicle network V2X service access according to the state of the OBU, the method further includes:
    所述OBU或所述RSU依据频率优先级优先选择频率优先级高的区域作为所述目标区域。The OBU or the RSU preferentially selects an area with a high frequency priority as the target area according to a frequency priority.
  11. 一种车载单元OBU目标区域的选择装置,应用于车载单元OBU或路边单元RSU,包括:A device for selecting a target area of an on-board unit OBU, which is applied to an on-board unit OBU or a roadside unit RSU, comprising:
    第一选择模块,设置为依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。The first selection module is configured to preferentially select a target area supporting the access of the vehicle network V2X service according to the state of the OBU, wherein the status includes at least one of the following: an idle state, a connected state.
  12. 根据权利要求11所述的装置,其中,所述选择模块依据所述OBU的状态按照以下之一预设策略选择支持车联网业务接入的目标区域:The apparatus according to claim 11, wherein the selection module selects a target area supporting the access to the Internet of Vehicle service according to one of the following preset policies according to the status of the OBU:
    所述选择模块,设置为在所述OBU为空闲态时,所述OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为所述目标区域;The selection module is configured to: when the OBU is in an idle state, the OBU selects a first area supporting the Internet service according to the first preset condition when the mobile management parameter sent by the received roadside unit RSU meets the first preset condition The target area;
    所述选择模块,设置为在所述OBU为连接态时,所述RSU根据接收到的所述OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为所述目标区域。The selection module is configured to: when the OBU is in a connected state, the RSU selects a second area supporting the Internet service as the target according to the received information that the OBU reports the information to meet the second preset condition. region.
  13. 根据权利要求12所述的装置,其中,所述移动管理参数包括以下至少之一:参考信号接收功率RSRP门限、参考信号接收质量RSRQ门限、频率优先级、小区重选门限、专用短距离通信DSRC信道利用率、DSRC backhaul上/下行速率、DSRC信标接收信号强度指示RSSI、DSRC标识。The apparatus according to claim 12, wherein the mobility management parameter comprises at least one of: a reference signal received power RSRP threshold, a reference signal received quality RSRQ threshold, a frequency priority, a cell reselection threshold, a dedicated short range communication DSRC Channel utilization, DSRC backhaul uplink/downlink rate, DSRC beacon received signal strength indication RSSI, DSRC identification.
  14. 根据权利要求13所述的装置,其中,The device according to claim 13, wherein
    所述RSRP门限和所述RSRQ门限用于LTE覆盖小区的测量;The RSRP threshold and the RSRQ threshold are used for measurement of an LTE coverage cell;
    所述频率优先级和所述小区重选门限用于长期演进LTE小区间重选;The frequency priority and the cell reselection threshold are used for long term evolution LTE inter-cell reselection;
    所述DSRC信道利用率、所述DSRC backhaul上/下行速率和所述DSRC信标接收信号强度指示RSSI用于DSRC覆盖区域的信号质量测量;The DSRC channel utilization, the DSRC backhaul uplink/downlink rate, and the DSRC beacon received signal strength indication RSSI are used for signal quality measurement of the DSRC coverage area;
    其中,所述DSRC标识包括以下至少一种:服务集标识SSID、基本服务集标识BSSID、同类扩展服务集标识HESSID。The DSRC identifier 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.
  15. 根据权利要求12所述的装置,其中,所述OBU上报的信息包括以下至少之一:所述OBU正在接收或感兴趣接收的车联网V2X业务标识、所述OBU的能力、测量报告,其中, 所述测量报告为所述RSU判断是否需要进行选择的依据。The device according to claim 12, wherein the information reported by the OBU comprises at least one of: an Internet of Vehicles V2X service identifier that the OBU is receiving or interested in receiving, an capability of the OBU, a measurement report, where The measurement report is a basis for the RSU to determine whether a selection is needed.
  16. 根据权利要求15所述的装置,其中,所述OBU的能力包括以下至少之一:载波聚合CA能力、多媒体广播多播MBMS能力、DSRC能力、双连接DC能力、LTE和DSRC同时接收的能力。The apparatus of claim 15, wherein the capabilities of the OBU comprise at least one of: carrier aggregation CA capability, multimedia broadcast multicast MBMS capability, DSRC capability, dual connectivity DC capability, LTE and DSRC simultaneous reception capabilities.
  17. 根据权利要求11所述的装置,其中,所述OBU的空闲态是指所述OBU仅允许接收RSU发送的信息而不允许向所述RSU发送信息,所述OBU的连接态是指所述OBU既允许接收所述RSU发送的信息也允许向所述RSU发送信息。The apparatus according to claim 11, wherein the idle state of the OBU means that the OBU only allows receiving information transmitted by the RSU and does not allow information to be sent to the RSU, and the connected state of the OBU refers to the OBU Both receiving information sent by the RSU and sending information to the RSU are allowed.
  18. 根据权利要求11至17任一项所述的装置,其中,所述目标区域为LTE覆盖区域或DSRC覆盖区域。The apparatus according to any one of claims 11 to 17, wherein the target area is an LTE coverage area or a DSRC coverage area.
  19. 根据权利要求12所述的装置,其中,所述OBU在所属的源RSU和目标RSU之间进行信息交互,其中,所述交互的信息包括以下至少之一:OBU接收或感兴趣接收的V2X业务标识信息,OBU接收或感兴趣接收的V2X业务配置信息、OBU运动参数、V2X业务资源池配置;所述OBU运动参数包括以下至少之一:OBU运动方向、OBU位置、OBU运动速度、OBU加速度。The apparatus according to claim 12, wherein the OBU performs information interaction between the associated source RSU and the target RSU, wherein the information of the interaction includes at least one of the following: the O2 receives or is interested in receiving the V2X service. The identification information, the V2X service configuration information received by the OBU or the receiver, the OBU motion parameter, and the V2X service resource pool configuration; the OBU motion parameter includes at least one of the following: an OBU motion direction, an OBU position, an OBU motion speed, and an OBU acceleration.
  20. 根据权利要求11所述的装置,其中,在车载单元OBU或路边单元RSU依据所述OBU的状态优先选择支持车联网V2X业务接入的目标区域之后,所述装置还包括:The apparatus according to claim 11, wherein after the on-board unit OBU or the roadside unit RSU preferentially selects a target area supporting the Internet of Vehicles V2X service access according to the state of the OBU, the apparatus further includes:
    第二选择模块,设置为依据频率优先级优先选择频率优先级高的区域作为所述目标区域。The second selection module is configured to preferentially select an area with a high frequency priority as the target area according to the frequency priority.
  21. 一种车载单元OBU目标区域的选择系统,包括:路边单元RSU和车载单元OBU,A selection system for an on-board unit OBU target area, comprising: a roadside unit RSU and an onboard unit OBU,
    路边单元RSU获取车载单元OBU的状态,其中,所述状态包括:空闲态、连接态;The roadside unit RSU acquires the state of the onboard unit OBU, wherein the state includes: an idle state, a connected state;
    在所述OBU为空闲态时,所述OBU根据接收到的路边单元RSU发送的移动管理参数满足第一预设条件时,选择支持车联网业务的第一区域作为所述目标区域;When the OBU is in an idle state, the OBU selects a first area supporting the Internet of Vehicle service as the target area when the mobile management parameter sent by the received roadside unit RSU satisfies the first preset condition;
    在所述OBU为连接态时,所述RSU根据接收到的所述OBU上报的信息满足第二预设条件时,选择支持车联网业务的第二区域作为所述目标区域。When the OBU is in the connected state, the RSU selects the second area supporting the Internet of Vehicle service as the target area when the received information reported by the OBU satisfies the second preset condition.
  22. 一种路边单元RSU,包括:A roadside unit RSU comprising:
    第一处理器,设置为依据车载单元OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。The first processor is configured to preferentially select a target area supporting the access of the vehicle network V2X service according to a state of the onboard unit OBU, wherein the status includes at least one of the following: an idle state and a connected state.
  23. 根据权利要求22所述的RSU,其中,所述RSU还包括:The RSU of claim 22, wherein the RSU further comprises:
    第一接收器,设置为接收所述OBU上报的信息;a first receiver, configured to receive information reported by the OBU;
    所述第一处理器,还设置为在所述OBU上报的信息满足第二预设条件,且所述OBU为连接态时,选择支持车联网业务的第二区域作为所述目标区域。 The first processor is further configured to: when the information reported by the OBU satisfies a second preset condition, and the OBU is in a connected state, select a second area supporting the Internet of Vehicle service as the target area.
  24. 一种车载单元OBU,包括:An onboard unit OBU, comprising:
    第二处理器,依据车载单元OBU的状态优先选择支持车联网V2X业务接入的目标区域,其中,所述状态包括以下至少之一:空闲态、连接态。The second processor preferentially selects a target area supporting the access of the vehicle network V2X service according to the state of the onboard unit OBU, wherein the status includes at least one of the following: an idle state and a connected state.
  25. 根据权利要求24所述的OBU,其中,所述OBU还包括:The OBU of claim 24, wherein the OBU further comprises:
    第二接收器,设置为接收路边单元RSU发送的移动管理参数;a second receiver configured to receive a mobility management parameter sent by the roadside unit RSU;
    所述第二处理器,还设置为在所述移动管理参数满足第二预设条件,且所述OBU为空闲态时,选择支持车联网业务的第一区域作为所述目标区域。 The second processor is further configured to: when the mobility management parameter meets a second preset condition, and the OBU is in an idle state, select a first area supporting the car networking service as the target area.
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