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WO2017049977A1 - Procédé, appareil, et système de sélection d'une zone cible, obu, et rsu - Google Patents

Procédé, appareil, et système de sélection d'une zone cible, obu, et 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
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English (en)
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
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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/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/304—Reselection being triggered by specific parameters by measured or perceived connection quality data due to measured or perceived resources with higher communication quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé, un appareil, et un système de sélection d'une zone cible, une unité embarquée (OBU), et une unité du côté de la route (RSU). Le procédé consiste : en ce qu'une OBU ou une RSU sélectionne de préférence, en fonction d'un état de l'OBU, une zone cible prenant en charge l'accès d'un service de communication de véhicule à tout (V2X), l'état comprenant au moins un état entre un état inactif et un état connecté. La présente invention résout le problème de difficulté d'exécution continue d'un service de V2X d'un véhicule pendant le déplacement du véhicule entre une zone de couverture DSRC et une zone de couverture LTE dans l'état de la technique.
PCT/CN2016/087246 2015-09-25 2016-06-27 Procédé, appareil, et système de sélection d'une zone cible, obu, et rsu WO2017049977A1 (fr)

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