WO2017049978A1

WO2017049978A1 - Method, apparatus, and device for synchronizing location of on-board unit in vehicle to everything

Info

Publication number: WO2017049978A1
Application number: PCT/CN2016/087247
Authority: WO
Inventors: 许辉; 马子江; 卢忱; 王亚英
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-09-25
Filing date: 2016-06-27
Publication date: 2017-03-30
Also published as: CN106559442B; CN106559442A

Abstract

The present invention provides a method, apparatus, and device for synchronizing a location of an on-board unit (OBU) in Vehicle to Everything. The method comprises the following steps: when location information of an OBU changes, a first road side unit (RSU) acquires location information reported by the OBU (S202); the first RSU synchronizes the location information to a second RSU via an interface (S204). The present invention resolves the problem in the related art that a dedicated short range communication (DSRC) RSU and an LTE RSU cannot find by paging OBUs covered by each other, thereby improving management of OBU location information in Vehicle to Everything.

Description

Method, device and device for synchronizing position of vehicle unit in vehicle network

Technical field

The present invention relates to the field of communications, and in particular to a method, device and device for synchronizing the position of an onboard unit in a vehicle network.

Background technique

With the rapid development of economy and society, China's automobile ownership has grown rapidly, and road traffic accidents have occurred frequently. It has become one of the important factors affecting China's public security in recent years. Road traffic safety has become a basic problem affecting social harmony and improving people's livelihood. one. China urgently needs to improve traffic safety from various aspects such as technology, policy and education. Among them, improving vehicle safety design is an important part of it.

The technologies to improve vehicle safety are mainly divided into passive safety technology and active safety technology. Passive safety technology is used to protect people inside and outside the vehicle after accidents. Active safety technology is used to prevent and reduce accidents in vehicles and avoid injuries. Active safety technology is the focus of modern vehicle safety technology development. And trends.

The communication-based collision warning system realizes real-time information interaction between the vehicle, the vehicle and the roadside infrastructure by using advanced wireless communication technology and a new generation of information processing technology, and informs each other of the current state (including the position and speed of the vehicle). Acceleration, driving route) and learned road environment information, collaboratively aware of road hazard conditions, timely providing a variety of collision warning information to prevent road traffic safety accidents, and become a new way for countries to solve road traffic safety problems. .

Vehicle to Everything (V2X) refers to the provision of vehicle information through sensors, vehicle terminals and electronic tags mounted on vehicles. Vehicles and vehicles (V2V) are implemented by various communication technologies. Vehicle to Pedestrian (V2P), Vehicle to Infrastructure (V2I) is interconnected, and information is extracted and shared on the information network platform for effective use. Control and provide integrated services. FIG. 1 is a schematic diagram of sending traffic and scheduling information to a vehicle through a network information platform in the related art.

In recent years, with the development of new mobile communication technologies, the use of LTE technology to solve the research based on vehicle networking communication applications has emerged internationally.

The Road Side Unit (RSU) can receive vehicle requests, ensure that the vehicle accesses the Internet, and has the function of a gateway. In addition, it also has the functions of data calculation, storage, and forwarding.

Vehicle to Road Side Unit (V2R), also known as V2I, the main features of this V2R communication include:

(1) When the RSU broadcasts, the broadcast information is only sent to all vehicles within its coverage:

(2) The single-hop transmission between the RSU and the vehicle prevents the adverse effects of low packet transmission success rate and low network throughput caused by multi-hop:

(3) The RSU can quickly receive detected vehicles, traffic lights and some road condition information, and process, reorder, and hoove the information to the vehicle.

The above three aspects ensure that when the vehicle passes through the RSU, the connection with the RSU ensures that the vehicle can access the Internet reliably or in real time or download data stored by the RSU.

RSU has short-range coverage (hundreds of meters), cheap, easy to deploy and high data access speed (about l0mbps). The research on RSU access in V2R needs to consider the following factors:

1) The vehicles are in high-speed moving state, usually the speed is 60-70m/s, the RSU coverage is 1000m, and the communication link between the car and the RSU is ideally maintained for 13s~16s, so some files cannot be Complete upload/download within one RSU coverage:

2) RSU deployment has no unified management, RSU bandwidth, and limited channel resources, which leads to uneven distribution of RSU and unordered competition behavior of vehicles in order to obtain more bandwidth and channel resources. For example, when there is an overlapping area between multiple RSUs in an urban scenario, if the vehicle accesses the RSU policy improperly, the load between the RSUs will be unbalanced and the network resource utilization will be reduced.

There are currently two types of car networking implementation technologies: Dedicated Short Range Communication (DSRC) and Long Time Evolution (LTE). The DSRC is based on IEEE802.11P and IEEE1609 series standards, 802.11P. Responsible for the physical layer and Medium Access Control (MAC) technology, 1609 is responsible for the upper specification. The LTE-based V2X technology has just begun to be discussed and there are no standards.

At present, 3GPP is also studying the UE access selection problem when LTE and WLAN coexist: the purpose is to offload the EPS of the evolved packet system; there are two WLAN offload schemes in 3GPP: RAN-assisted WLAN interworking and access network discovery Access Network Selection and Traffic Steering Rules (ANDSF), the former belongs to the RAN solution, and the latter belongs to the NAS solution. The base station sends the RAN assistance parameters to the UE through the SystemInformationBlockType17 or the RRCConnectionReconfiguration message, and the UE implements the selection of the access network by using the RAN assistance parameters and the ANDSF.

In the research and practice of the prior art, the following problem is found: in LTE, the network side performs paging according to the TA list of the UE, or in the LTE, the network side can know the location information of the UE, when the OBU is in the LTE When moving between the coverage area and the DSRC coverage area, the LTE Mobility Management Entity (MME)/ The eNB/RSU does not know the location of the OBU and cannot page to the OBU.

In view of the above problems in the related art, there is currently no effective solution.

Summary of the invention

The embodiment of the invention provides a method, a device and a device for synchronizing the position of the on-board unit in the vehicle networking, so as to solve at least the problem that the DSRC RSU and the LTE RSU cannot be mutually paged to the OBU under the RSU coverage in the related art.

According to an aspect of the present invention, a method for synchronizing the position of the on-board unit OBU in the vehicle network is provided, which includes: when the position information is updated by the on-board unit OBU, the first roadside unit RSU acquires the position information reported by the onboard unit OBU; The first RSU synchronizes the location information to the second RSU through the interface.

Optionally, the first RSU and the second RSU each include one of the following: a Long Term Evolution Roadside Unit LTE RSU, and a Dedicated Short Range Communication Roadside Unit DSRC RSU.

Optionally, the manner of the location update includes at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, the OBU by the LTE The RSU covers the movement, periodic location update between the OBUs within the LTE RSU coverage, the OBUs between different BSSs or DSRC RSUs of different ESSs.

Optionally, when the first RSU is the LTE RSU, the acquiring the location information of the onboard unit OBU by the first roadside unit RSU includes: acquiring, by the LTE RSU, the OBU to report to the packet core network EPC network element and/or Or the location information of the application layer network element, and/or the location information directly reported by the OBU, where the location information is a tracking area identifier, or a base station eNB identifier, or a cell identifier, or a user equipment UE. Logo.

Optionally, when the first RSU is the DSRC RSU, the acquiring the location information of the onboard unit OBU by the first roadside unit RSU includes: the DSRC RSU acquiring the EBU reported to the packet core network EPC network element And the location information of the application layer network element, and/or the location information directly received by the OBU, where the location information is an identifier for identifying an RSU where the OBU is located, the OBU The RSU in which it is located is the DSRC RSU.

Optionally, the identifier for identifying the RSU where the OBU is located includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.

Optionally, the method further includes: the first RSU forwarding the received paging message of the second RSU to the OBU according to the location information.

Optionally, the OBU is in an idle state before the location information is reported.

Optionally, the interface is a direct or indirect interface.

According to another aspect of the present invention, a method for synchronizing the position of an on-board unit OBU in a vehicle network is provided, which includes: when the position information is updated, the on-board unit OBU reports the position information to the first roadside unit RSU. The location information is location information that is synchronized by the first roadside unit RSU to the second RSU; the OBU monitors and/or receives a paging message sent by the RSU according to the location information;

According to still another aspect of the embodiments of the present invention, a synchronization device for an on-board unit OBU in a vehicle network is provided, which is applied to a first roadside unit RSU side, and includes: an acquisition module, configured to generate location information update at the onboard unit OBU. And acquiring location information of the onboard unit OBU; and the synchronization module is configured to synchronize the location information to the second RSU through a direct or indirect interface.

Optionally, when the first RSU is the LTE RSU, the acquiring module includes: a first acquiring unit, configured to acquire, by the OBU, the EPC network element and/or the application layer network element reported to the packet core network And the location information, and/or the location information directly reported by the OBU, where the location information is a tracking area identifier, or a base station eNB identifier, or a cell identifier, and a user equipment UE identifier.

Optionally, when the first RSU is the DSRC RSU, the acquiring module includes: a second acquiring unit, configured to obtain the EBU reporting to the packet core network EPC network element and/or the application layer network element The location information, and/or the location information directly received by the OBU, where the location information is an identifier for identifying an RSU where the OBU is located, and the RSU where the OBU is located is the DSRC RSU .

Optionally, the device further includes: a forwarding module, configured to forward the received paging message of the second RSU to the OBU according to the location information.

Optionally, the interface is a direct or indirect interface.

According to still another aspect of the present invention, a synchronization device for the position of an on-board unit OBU in a vehicle network is provided, which is applied to an OBU side of the vehicle-mounted unit, and includes: a reporting module configured to update the location information of the on-board unit OBU The first roadside unit RSU reports the location information, wherein the location information is that the first roadside unit RSU synchronizes the location information with the second RSU; and the processing module is configured to monitor and/or receive the RSU a paging message sent according to the location information;

According to still another aspect of the present invention, a synchronization device for an on-board unit OBU position in a vehicle network is provided, which is applied to a first roadside unit RSU side, and includes: a receiver configured to generate location information update at the onboard unit OBU. Obtaining location information of the onboard unit OBU; the processor is configured to synchronize the location information to the second RSU through a direct or indirect interface.

Optionally, the device further includes: a transmitter, configured to forward the received paging message of the second RSU to the OBU according to the location information.

According to the embodiment of the present invention, when the location information update occurs in the onboard unit OBU, the first roadside unit RSU acquires the location information reported by the onboard unit OBU from the network side entity; the first RSU synchronizes the position to the second RSU through the direct or indirect interface. Information, it can be seen that between different RSUs, when the location information of the OBU changes or just accesses the RSU, its location information is reported, and the location information can be synchronized between different RSUs, thereby solving the related art. The problem that the DSRC RSU and the LTE RSU cannot page each other to the OBU under the RSU coverage improves the management effect of the OBU location information in the Internet of Vehicles.

DRAWINGS

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:

1 is a schematic diagram of sending traffic and scheduling information to a vehicle through a network information platform in the related art;

2 is a flow chart of a method for synchronizing the position of an onboard unit OBU in a vehicle network according to an embodiment of the present invention;

3 is a flow chart of a method for synchronizing the position of an on-board unit OBU in a car network according to an embodiment of the present invention;

4 is a structural block diagram of a synchronization device for an on-board unit OBU position in a vehicle network according to an embodiment of the present invention;

5 is a block diagram 1 of an optional structure of a device for managing the position of an on-board unit OBU in a vehicle network according to an embodiment of the present invention;

6 is a structural block diagram 2 of a device for managing a position of an on-board unit OBU in a vehicle network according to an embodiment of the present invention;

7 is a structural block diagram of a synchronization device for an on-board unit OBU position in a vehicle network according to an embodiment of the present invention;

8 is a flow chart of a method for implementing OBU location management in accordance with an alternative embodiment of the present invention;

Figure 9 is a schematic illustration of a 1 in accordance with an alternate embodiment of the present invention;

Figure 10 is a schematic illustration of an alternative embodiment 2 in accordance with the present invention;

Figure 11 is a schematic illustration of a 3 in accordance with an alternate embodiment of the present invention;

Figure 12 is a schematic illustration of a 5 in accordance with an alternate embodiment of the present invention;

Figure 13 is a schematic illustration of a 6 in accordance with an alternate embodiment of the present invention.

detailed description

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.

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.

In the embodiment, a method for managing the position of the onboard unit OBU in the vehicle networking is provided. FIG. 2 is a flowchart of a method for synchronizing the position of the onboard unit OBU in the vehicle network according to an embodiment of the present invention. The process includes the following steps:

Step S202: When the location information update occurs in the onboard unit OBU, the first roadside unit RSU acquires the location information reported by the onboard unit OBU from the network side entity;

Step S204: The first RSU synchronizes the location information to the second RSU through the interface.

With the step S202 and the step S204 of the embodiment, when the location information update occurs on the onboard unit OBU, the first roadside unit RSU acquires the location information reported by the onboard unit OBU from the network side entity; the first RSU passes through the direct or indirect interface. The second RSU synchronizes the location information. It can be seen that when the location information of the OBU changes or just accesses the RSU, the location information of the OBU is reported between different RSUs, and the location information can be synchronized between different RSUs. The problem that the OCR between the DSRC RSU and the LTE RSU cannot be mutually paged to the RSU coverage is solved in the related art, thereby improving the management effect of the OBU location information in the Internet of Vehicles.

It should be noted that the synchronization location information involved in this embodiment is that the OBU location information stored in the first RSU and the second RSU are consistent.

The first RSU and the second RSU involved in the embodiment include one of the following: a long term evolution roadside unit LTE RSU, and a dedicated short range communication roadside unit DSRC RSU.

The manner of location update involved in this embodiment includes at least one of the following: update of the tracking area of the OBU, movement of the OBU between the LTE RSU and the DSRC RSU, coverage of the OBU by the LTE RSU, and coverage of the LTE RSU, and the OBU Mobile, periodic location updates between DSRC RSUs of different BSSs or different ESSs.

That is to say, the OBU reports location information only when the location is updated. The location update includes: TA update of the OBU, coverage of the LTE RSU to the coverage, movement between the LTE RSU and the DSRC RSU, and DSRC RSU of different BSS or different ESSs. Inter-movement, periodic location update. If the OBU moves from within the RSU coverage to the outside of the coverage, the RSU.OBU is generally notified to be in the idle state at the inner edge of the RSU.

Based on this, in an optional implementation manner of this embodiment, when the first RSU is an LTE RSU, the manner of acquiring the location information of the onboard unit OBU for the first roadside unit RSU involved in this embodiment may be adopted. The LTE RSU obtains the location information of the EPC network element and/or the application layer network element that the OBU reports to the packet core network, and/or receives the location information directly reported by the OBU, where the location information is the tracking area identifier, or the base station. eNB identity, or cell identity, or user equipment UE identity.

That is, when the first RSU is an LTE RSU, the location information involved in this embodiment is, and the network side entity may be a packet core network EPC network element and/or an application layer network element.

In another optional implementation manner of this embodiment, when the first RSU is a DSRC RSU, the manner in which the first roadside unit RSU acquires the location information of the onboard unit OBU may be implemented by: DSRC RSU Obtaining the location information of the EPC network element and/or the application layer network element reported by the OBU, and/or receiving the location information directly reported by the OBU, where the location information is used to identify the identifier of the RSU where the OBU is located, where the OBU is located. The RSU is a DSRC RSU.

The identifier for identifying the RSU where the OBU is located includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.

In addition, in another optional embodiment of this embodiment, the method in this embodiment further involves: the first RSU forwarding the received paging message of the second RSU to the OBU according to the location information.

It should be noted that, before the location information is reported, the OBU involved in this embodiment is in an idle state. In addition, the interface involved in this embodiment is a direct or indirect interface.

3 is a flowchart of a method for synchronizing the position of an on-board unit OBU in a vehicle network according to an embodiment of the present invention. As shown in FIG. 3, the steps of the method include:

Step S302: When the location information is updated, the onboard unit OBU reports the location information to the first roadside unit RSU, wherein the location information is location information that the first roadside unit RSU synchronizes with the second RSU.

Step S304: The OBU monitors and/or receives the paging message sent by the RSU according to the location information.

It should be noted that the first RSU and the second RSU involved in this embodiment all include one of the following: a long-term evolution roadside unit LTE RSU, and a dedicated short-range communication roadside unit DSRC RSU. Based on this, the manner of location update involved in this embodiment includes at least one of the following: an update of the tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, and an OBU coverage by the LTE RSU to the LTE RSU coverage. The OBU moves and periodically updates between different BSSs or DSRC RSUs of different ESSs.

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 of various embodiments of the present invention.

In this embodiment, a device for synchronizing the position of the on-board unit OBU in the vehicle network is also provided, and the device is used to implement the above-mentioned embodiments and preferred embodiments, and the detailed description thereof has been omitted. 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.

4 is a structural block diagram of a synchronization device for a position of an on-vehicle unit OBU in a vehicle network according to an embodiment of the present invention. The device is applied to a side of a first roadside unit RSU. As shown in FIG. 4, the device includes: an acquisition module 42. Obtaining location information of the onboard unit OBU when the location information update occurs in the onboard unit OBU, wherein the location information is that the OBU moves from the coverage of the second RSU to the coverage of the first RSU or the OBU is initially connected When the first RSU is entered, the location information reported to the network side entity; the synchronization module 44 is coupled to the acquisition module 42 and configured to synchronize the location information to the second RSU through the direct or indirect interface.

It should be noted that the first RSU and the second RSU involved in the apparatus embodiment include one of the following: a long term evolution roadside unit LTE RSU, and a dedicated short distance communication roadside unit DSRC RSU.

It should be noted that the manner of the location update includes at least one of the following: an update of the tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, an OBU coverage by the LTE RSU, an LTE RSU coverage, and an OBU in different BSSs. Or movement, periodic location update between DSRC RSUs of different ESSs.

Optionally, when the first RSU is an LTE RSU, the acquiring module is further configured to acquire location information of the OBU from the mobility management entity MME and/or the RSU where the OBU is located, where the location information is a tracking area identifier, or the base station eNB Identification, or cell identity, or user equipment UE identity.

Optionally, when the first RSU is a DSRC RSU, the acquiring module 42 is further configured to obtain location information that is reported by the OBU to the packet core network EPC network element and/or the application layer network element, and/or receive the OBU directly reported. Location information, where the location information is an identifier for identifying the RSU where the OBU is located, and the RSU where the OBU is located is a DSRC RSU. The identifier for identifying the RSU where the OBU is located includes at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.

5 is a block diagram of an optional structure of a device for managing the position of an on-board unit OBU in a vehicle network according to an embodiment of the present invention. As shown in FIG. 5, the device further includes: a forwarding module 52 coupled to the synchronization module 44 and configured to be The received paging message of the second RSU is forwarded to the OBU according to the location information.

The interface involved in this embodiment may be a direct interface or an indirect interface.

6 is a structural block diagram 2 of a device for managing an OCU position of an on-vehicle unit in a vehicle network according to an embodiment of the present invention. The device is applied to an OBU side of an in-vehicle unit. As shown in FIG. 6, the device includes: a reporting module 62, configured to be When the location information of the onboard unit OBU is updated, the location information is reported to the first roadside unit RSU, wherein the location information is that the first roadside unit RSU synchronizes the location information with the second RSU; the processing module 64 is coupled to the reporting module 62. Set to monitor and/or receive paging messages sent by the RSU based on location information.

The first RSU and the second RSU involved in this embodiment each include one of the following: a long term evolution roadside unit LTE RSU, and a dedicated short range communication roadside unit DSRC RSU. Based on this, the manner of location update involved in this embodiment Including at least one of: update of tracking area of OBU, movement of OBU between LTE RSU and DSRC RSU, OBU coverage by LTE RSU to LTE RSU coverage, OBU between different BSS or DSRC RSU of different ESS Mobile, periodic location updates.

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.

7 is a structural block diagram of a synchronization device for an on-board unit OBU position in a vehicle network according to an embodiment of the present invention. The device is applied to a first roadside unit RSU side, and the device includes: a receiver 72 configured to occur in an onboard unit OBU. When the location information is updated, the location information of the onboard unit OBU is obtained; the processor 74 is coupled to the receiver 72 and configured to synchronize the location information to the second RSU through a direct or indirect interface; the transmitter 76 is coupled to the processor 74. The paging message set to receive the received second RSU is forwarded to the OBU according to the location information.

The invention is exemplified below in conjunction with an alternative embodiment of the invention;

The optional embodiment provides a method for implementing OBU location management, including: LTE roadside unit RSU and DSRC RSU acquire OBU location information, and LTE roadside unit RSU and DSRC RSU exchange OBU location information through interface, LTE RSU or The DSRC RSU sends a paging message according to the location of the OBU, and the OBU sends a response message after receiving the paging message within the LTE RSU or DSRC RSU coverage.

FIG. 8 is a flowchart of a method for implementing OBU location management according to an optional embodiment of the present invention. As shown in FIG. 8, the steps of the method include:

In step S801, the OBU reports the location information of the network.

The location information of the OBU is stored in the MME, the RSU that provides the coverage area for the DSRC is referred to as the DSRC RSU, and the RSU that provides the coverage area for the LTE is referred to as the LTE RSU.

The location of the OBU in the LTE (ie, the OBU is under the LTE coverage) generally uses the tracking area TA list; the location of the OBU in the DSRC (ie, the OBU under the DSRC coverage) generally uses the DSRC RSU identifier indication, and the DSRC RSU identifier includes the following At least one of the following: a Service Set Identifier (SSID), a Basic Service Set Identifier (BSSID), and a Homogenous Extended Service Set Identifier (HESSID). The location information of each OBU saved in the MME may be: TA list+SSID list

It should be noted that the location information of the OBU is obtained by the MME after the OBU reports the network, that is, the location information is reported to the network when the OBU is updated or initially attached. The network involved in the optional embodiment may be : RSU and/or MME where the OBU is located.

The UE location information on the MME includes: TA list, SSID/BSSID/HESSID list;

The UE location information on the eNB or the RSU includes: a cell ID, an SSID/BSSID/HESSID list;

Step S802, the RSU acquires location information of the OBU.

The onboard unit OBU is equivalent to the user equipment UE, and the OBU is in an idle state, that is, the OBU resides in the cell, but does not establish an RRC connection with the base station. If the OBU is in the DSRC coverage area, the idle state means that the OBU can only receive the information sent by the RSU and cannot send information to the RSU. If the OBU can receive information sent by the RSU or send information to the RSU, the OBU is not idle. For example, the OBU is connected.

The RSU includes: an LTE RSU and/or a DSRC RSU, where the LTE RSU is an RSU capable base station eNB in LTE.

The LTE RSU obtains the location information of the OBU through the mobility management entity MME. The location information generally refers to the tracking area TA of the OBU. The DSRC RSU obtains the location information of the OBU according to the prior art. For example, when the OBU communicates with the DSRC RSU, the DSRC RSU saves the OBU. The location information of the OBU in the DSRC is generally indicated by the identifier of the DSRC RSU, and the DSRC RSU identifier includes at least one of the following: SSID, BSSID, HESSID.

It should be noted that the location information of the OBU is obtained by the OBU reporting network side, that is, when the OBU is updated or initially attached, the location information is reported to the RSU and/or the MME.

Step S803, the location information of the OBU is exchanged between the RSUs.

There is an interface between the RSUs: an interface between the LTE RSUs (such as the X2 port), an interface between the LTE RSU and the DSRC RSU, and an interface between the DSRC RSUs.

This location information is passed through the interface between the RSUs. There are two cases: 1) the OBU is located in the DSRC coverage, the DSRC RSU sends the OBU location information to the DSRC RSU and/or the LTE RSU with the interface nearby; 2) the OBU is located in the LTE RSU coverage, and the LTE RSU has the DSRC with the interface nearby The RSU and/or LTE RSU sends the location information of the OBU.

It should be noted that the interaction of the OBU location information between the RSUs generally occurs when the OBU is initially attached or updated, including: the OBU initiates attach/TAU in LTE, or the OBU enters DSRC coverage from LTE coverage, or the OBU covers from the DSRC. Entering the LTE coverage, or the OBU reselects the new RSU in the DSRC. When any of the above occurs, the OBU reports the location information to the RSUhe and/or the MME, and the location between the RSUs that received the reported location information. Information exchange.

Step S804, the LTE RSU sends a paging message.

The LTE RSU receives the paging message sent by the MME or the RSU itself needs to send a paging message, such as a system message update or an MT (Mobile Terminated) call.

If the LTE RSU determines that the target OBU is within the LTE RSU coverage area, the LTE RSU sends a paging message within the coverage area; if the LTE RSU determines that the target OBU is not within the LTE RSU coverage area or the target OBU is within the adjacent DSRC RSU coverage, then LTE The RSU first sends a paging message to the DSRC RSU, and the DSRC RSU that receives the paging message sends a paging message in the coverage area.

Step S805, the OBU receives the RSU to send a paging message.

The OBU detects the required paging message, and the required paging message refers to the paging message being associated with the OBU (such as system message update) or the presence of the OBU identifier in the paging message; if the required paging is detected; Message, then OBU enters one Steps to determine whether it is necessary to establish a connection with the RSU and send a paging response message. For example, for the system message update, the OBU does not need to send a paging response message. For the MT paging, the OBU needs to establish a connection and send a paging response message; if the OBU is located After the DSRC is received, and the received paging message is sent by the LTE RSU, the DSRC RSU forwards the received paging response message to the LTE RSU through the interface after receiving the paging response message of the OBU.

The present optional embodiment will be described in detail below in conjunction with the specific embodiments of the present exemplary embodiment;

Example 1

FIG. 9 is a schematic diagram of an optional embodiment of the present invention. As shown in FIG. 9, the application scenario involved in this embodiment is: an interface between an eNB and a DSRC AP, and an IDLE OBU enters a DSRC coverage (leaving LTE coverage). When the OBU reports the information (such as the OBU ID, the original TAI list, the capability, etc.) to the DSRC AP, the DSRC AP notifies the eNB that the eNB updates the location information of the OBU through the MME (eg, adds the SSID/BSSID of the AP in the paging area of the OBU). /HESSID);

When the Idle OBU returns to the LTE coverage, the OBU reports the OBU paging area (such as deleting the SSID/BSSID/HESSID).

Example 2

FIG. 10 is a schematic diagram of a second embodiment of the present invention. As shown in FIG. 10, the application scenario of the present embodiment is: the DSRC AP accesses the EPC through S2a/S2b/S2c, and there is no direct connection between the eNB and the AP. interface. The Idle OBU enters the DSRC coverage and reports the information to the AP. The AP reports the OBU location to the P-GW through the AC/BAS. The P-GW sends the OBU location information to the corresponding MME.

When the Idle OBU returns to the LTE coverage, the OBU reports the OBU paging area (such as deleting the SSID).

Example 3

11 is a schematic diagram of an alternative embodiment of the present invention. As shown in FIG. 11, the application scenario involved in this embodiment is: Idle OBU also performs periodic location update. When moving inside the DSRC, the Idle OBU adopts a cycle. The sex/event triggers a location update and sends the updated location information to the relevant MME covered by the LTE.

Example 4

The connected OBU enters the DSRC coverage and may also become an Idle (such as an LTE port inactive). Location update is also required.

Example 5

FIG. 12 is a schematic diagram of a 5 according to an optional embodiment of the present invention. As shown in FIG. 12, the application scenario involved in this embodiment is: paging in LTE, no paging in DSRC, and in LTE, if If an Idle OBU needs to be queried, the MME searches for the TA list where the OBU is located, and sends a paging message on the TA list. If the OBU is located in the DSRC coverage, consider the following scenario: 1) Scenario 1, an interface exists between the eNB and the DSRC AP. Then, the MME sends a paging message to the eNB (the eNB that connects the DSRC AP), and the eNB forwards the paging message to the AP, and the AP broadcasts the paging message, and the OBU responds after receiving the message. 2) Scenario 2: The DSRC AP accesses the EPC through S2a/S2b/S2c, and there is no direct interface between the eNB and the AP. The MME forwards the paging message to the P-GW, and the P-GW sends the paging message to the AC/BAS->AP through the S2a/b/c interface. The AP broadcasts the paging message, and the OBU responds after receiving the message.

Example 6

FIG. 13 is a schematic diagram of a preferred embodiment of the present invention. As shown in FIG. 13, the application scenario involved in this embodiment is: in the DSRC coverage, if the OBU is inactive, an LTE-like paging opportunity PO mode may be adopted. Monitor the page or put the paging indicator message in the Beacon message.

The invention provides a V2X OBU location management device, comprising:

a first receiver, configured to receive the report information sent by the OBU and receive the OBU location information and/or the paging message sent by the neighboring RSU or the connected EPC;

a first transmitter, configured to send a paging message to the OBU 60 and to send an OBU location information and/or a paging message to the neighboring RSU or the connected EPC;

The first processor is configured to determine to send a paging message and/or OBU location information by means of a local, or an adjacent RSU, or a connected EPC.

The above apparatus is an RSU in LTE and an RSU in DSRC, wherein the RSU in LTE includes: an eNB or a stationary UE.

The optional embodiment further provides a V2X OBU location management device, including:

a second receiver, configured to receive a paging message sent by the RSU,

a second transmitter configured to send location update information and a paging response message to the RSU,

The second processor is configured to determine when to transmit location update information and whether to page the response message.

The foregoing apparatus is an OBU in the LTE or an OBU in the DSRC, where the OBU in the LTE is a UE or a mobile terminal in the E-UTRAN.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

Step S1: The first roadside unit RSU acquires location information of the onboard unit OBU from the network side entity;

Step S2: The first RSU synchronizes the location information to the second RSU through a direct or indirect interface.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Optionally, the specific examples in this embodiment may refer to the examples described in the foregoing embodiment and the optional implementation manner. This embodiment is not described here.

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.

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.

Industrial applicability

Claims

A method for synchronizing an OBU position of an onboard unit in a vehicle network, comprising:

When the location information is updated, the first roadside unit RSU acquires the location information reported by the onboard unit OBU;

The first RSU synchronizes the location information to a second RSU through an interface.
The method of claim 1, wherein the first RSU and the second RSU each comprise one of: a Long Term Evolution Roadside Unit LTE RSU, a Dedicated Short Range Communication Roadside Unit DSRC RSU.
The method of claim 2, wherein the manner of updating the location information comprises at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU And the OBU is covered by the LTE RSU to a mobile, periodic location update of the OBU between different BSSs or DSRC RSUs of different ESSs within the LTE RSU coverage.
The method of claim 2, wherein when the first RSU is the LTE RSU, the acquiring the location information of the onboard unit OBU by the first roadside unit RSU comprises:

Obtaining, by the LTE RSU, the location information reported by the OBU to the packet core network EPC network element and/or the application layer network element, and/or receiving the location information directly reported by the OBU, where the location information To track the area identifier, or the base station identity, or the cell identity, or the user equipment UE identity.
The method of claim 2, wherein when the first RSU is the DSRC RSU, the acquiring the location information of the onboard unit OBU by the first roadside unit RSU comprises:

The DSRC RSU obtains the location information reported by the OBU to the packet core network EPC network element and/or the application layer network element, and/or receives the location information directly reported by the OBU, where the location information For the identifier of the RSU where the OBU is located, the RSU where the OBU is located is the DSRC RSU.
The method according to claim 5, wherein the identifier for identifying the RSU in which the OBU is located comprises at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.
The method of any of claims 1 to 6, wherein the method further comprises:

The first RSU forwards the received paging message of the second RSU to the OBU according to the location information.
The method of claim 1 wherein said OBU is in an idle state prior to reporting said location information.
The method of claim 1 wherein the interface is a direct or indirect interface.
A method for synchronizing an OBU position of an onboard unit in a vehicle network, comprising:

The on-board unit OBU reports the location information to the first roadside unit RSU when the location information is updated, wherein the location information is location information that is synchronized by the first roadside unit RSU to the second RSU;

The OBU monitors and/or receives a paging message sent by the RSU according to the location information.
The method of claim 10, wherein the first RSU and the second RSU each comprise one of: a Long Term Evolution Roadside Unit LTE RSU, a Dedicated Short Range Communication Roadside Unit DSRC RSU.
The method of claim 11, wherein the manner of location update comprises at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, The OBU is covered by the LTE RSU to a mobile, periodic location update between the LTE RSU coverage, the OBU between different BSSs or DSRC RSUs of different ESSs.
A synchronization device for the position of the OBU of the vehicle-mounted unit in the vehicle network is applied to the RSU side of the first roadside unit, including:

Obtaining a module, configured to acquire location information of the onboard unit OBU when the location information update occurs in the onboard unit OBU;

A synchronization module configured to synchronize the location information to the second RSU through a direct or indirect interface.
The apparatus of claim 13, wherein the first RSU and the second RSU each comprise one of: a Long Term Evolution Roadside Unit LTE RSU, a Dedicated Short Range Communication Roadside Unit DSRC RSU.
The apparatus of claim 13, wherein the manner of location update comprises at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, The OBU is covered by the LTE RSU to a mobile, periodic location update between the LTE RSU coverage, the OBU between different BSSs or DSRC RSUs of different ESSs.
The apparatus according to claim 13, wherein when the first RSU is the LTE RSU, the acquiring module comprises:

The first obtaining unit is configured to acquire the location information that is reported by the OBU to the packet core network EPC network element and/or the application layer network element, and/or receive the location information directly reported by the OBU, where The location information is a tracking area identifier, or a base station identifier, or a cell identifier, or a user equipment UE identifier.
The apparatus of claim 13, wherein when the first RSU is the DSRC RSU, the obtaining module comprises:

a second obtaining unit, configured to acquire the location information reported by the OBU to the packet core network EPC network element and/or the application layer network element, and/or receive the location information directly reported by the OBU, where The location information is used to identify the identifier of the RSU where the OBU is located, and the RSU where the OBU is located is the DSRC RSU.
The apparatus according to claim 17, wherein the identifier for identifying the RSU in which the OBU is located comprises at least one of the following: a service set identifier SSID, a basic service set identifier BSSID, and a similar extended service set identifier HESSID.
The device according to any one of claims 13 to 18, wherein the device further comprises:

And a forwarding module, configured to forward the received paging message of the second RSU to the OBU according to the location information.
The apparatus of claim 13, wherein the OBU is in an idle state before the location information is reported.
The apparatus of claim 13 wherein the interface is a direct or indirect interface.
A synchronization device for the position of the OBU of the vehicle-mounted unit in the vehicle network is applied to the OBU side of the vehicle-mounted unit, including:

The reporting module is configured to report the location information to the first roadside unit RSU when the location information update of the onboard unit OBU occurs, wherein the location information is that the first roadside unit RSU synchronizes with the second RSU location information;

And a processing module, configured to monitor and/or receive a paging message sent by the RSU according to the location information.
The apparatus of claim 22, wherein the first RSU and the second RSU each comprise one of: a Long Term Evolution Roadside Unit LTE RSU, a Dedicated Short Range Communication Roadside Unit DSRC RSU.
The apparatus of claim 23, wherein the manner of location update comprises at least one of: an update of a tracking area of the OBU, a movement of the OBU between the LTE RSU and the DSRC RSU, The OBU is covered by the LTE RSU to a mobile, periodic location update between the LTE RSU coverage, the OBU between different BSSs or DSRC RSUs of different ESSs.
A synchronization device for the position of the OBU of the vehicle-mounted unit in the vehicle network is applied to the RSU side of the first roadside unit, including:

a receiver configured to acquire location information of the onboard unit OBU when the location information update of the onboard unit OBU occurs;

A processor configured to synchronize the location information to a second RSU over a direct or indirect interface.
The device of claim 25, wherein the device further comprises:

And a transmitter, configured to forward the received paging message of the second RSU to the OBU according to the location information.