CN106686552B - Multicast broadcasting method, device, management entity and base station for automatic driving information - Google Patents

Abstract

The present invention provides a method, device, management entity and base station for automatic driving information multicast broadcasting. The method includes: a vehicle networking broadcast multicast service management entity inside the base station receives the automatic driving vehicle terminal within the coverage area of the base station when an emergency occurs. The first message sent at the time of the event, the first message carries the safety-related information of the emergency event; the Internet of Vehicles broadcast and multicast service management entity sends the first message to all autonomous driving vehicles within the coverage of the base station terminal. In the method, the Internet of Vehicles broadcast and multicast service management entity is added locally by the base station, so that the base station can directly forward the safety-related information sent by the autonomous driving vehicle terminal, without first forwarding it to the core network server and then sending it through the eBM‑SC, which simplifies the data package. The forwarding process reduces the delay.

Description

Multicast broadcasting method, device, management entity and base station for automatic driving information

technical field

The present invention relates to the field of communication technologies, and in particular, to an automatic driving-oriented information multicast broadcasting method, device, management entity and base station.

Background technique

The diffusion of very important safety-related information in autonomous driving technology requires the use of broadcast and multicast technology. Once a vehicle collision or accident warning occurs, such safety information needs to be spread within a specific range at the fastest speed, and the delay usually requires milliseconds. ; The dynamic incremental update data of the high-precision 3D map supporting automatic driving can also be sent to the Internet of Vehicles terminals within a specific range using broadcast multicast technology.

The Long Term Evolution (LTE) system adopts the Evolved Multimedia Broadcast Multicast Service (eMBMS) technology, which can distribute the same content to multiple users, greatly saving valuable spectrum resources. There is no limit to the number of users, and the increase in the number of users will not affect the business experience. Figure 1 shows the logical architecture of eMBMS. The multi-cell/multicast coordination entity (MCE) as a logical entity is performing multi-cell transmission (that is, using a multicast/multicast single frequency network (Multimedia Broadcast Network). In the multicast service Single Frequency Network (MBSFN) transmission mode), it is used to uniformly manage the radio resources of all base stations eNB in the eMBSFN area, including allocating time domain resources and configuring specific radio parameters (such as Modulation and Coding Scheme). , referred to as MCS), etc.) to ensure the synchronization of eMBMS transmission among multiple cells. In deployment, MCE can be part of some functional entities (such as eNB), or it can be an independent entity. The main function of an eMBMS gateway (eMBMS gateway, eMBMS GW for short) is to send/broadcast eMBMS data packets to each eMBMS-bearing eNB, and to complete eMBMS session control signaling interaction with a Mobility Management Entity (MME for short). A broadcast multicast service center (eBM-SC for short) provides functions such as eMBMS service operation, session transmission, security control, content synchronization, and assignment of multicast destination IP addresses.

In the eMBMS session establishment procedure of the LTE system in the prior art, broadcast data is uniformly delivered by the eBM-SC. In the 5G Internet of Vehicles supporting autonomous driving, if the safety-related information generated by the autonomous driving vehicle is first forwarded to the core network service server and then sent through the eBM-SC, the data packet forwarding process is complicated and the delay is large, which cannot meet the requirements of autonomous driving. Required low latency metrics.

In view of this, how to issue safety-related information generated by autonomous vehicles to simplify the data packet forwarding process and reduce delay has become a technical problem that needs to be solved at present.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides an automatic driving-oriented information multicast broadcasting method, device, management entity and base station. The security-related information sent by the terminal does not need to be forwarded to the core network server and then sent by the eBM-SC, which simplifies the data packet forwarding process and reduces the delay.

In a first aspect, the present invention provides an automatic driving-oriented information multicast broadcasting method, including:

The Internet of Vehicles broadcast and multicast service management entity inside the base station receives the first message sent by the autonomous driving vehicle terminal within the coverage of the base station when an emergency event occurs, and the first message carries the safety-related information of the emergency event. ;

The Internet of Vehicles broadcast and multicast service management entity sends the first message to all automatic driving vehicle-mounted terminals within the coverage of the base station.

Optionally, after the IoV broadcast multicast service management entity inside the base station receives the first message sent by the autonomous driving vehicle terminal within the coverage of the base station when an emergency occurs, the method further includes:

The Internet of Vehicles broadcast and multicast service management entity sends the first message to the Internet of Vehicles broadcast and multicast service management entities within other base stations within a preset range, so that the preset range is The Internet of Vehicles broadcast and multicast service management entity in other base stations other than the base station sends the first message to all autonomous driving vehicle terminals within the coverage of the base station to which the Internet of Vehicles broadcast and multicast service management entity belongs.

Optionally, the IoV broadcast multicast service management entity inside the base station receives the first message sent by the autonomous driving vehicle terminal within the coverage of the base station when an emergency occurs, specifically:

The Internet of Vehicles broadcast and multicast service management entity inside the base station receives the radio bearer of the Internet of Vehicles broadcast and multicast service established by the base station and the autopilot vehicle terminal in the coverage area of the base station where an emergency occurs. The first message sent by the autopilot vehicle terminal when an emergency occurs.

In a second aspect, the present invention provides an automatic driving-oriented information multicast broadcasting device, comprising:

The receiving module is used for the Internet of Vehicles broadcast and multicast service management entity inside the base station to receive the first message sent by the autonomous driving vehicle terminal within the coverage of the base station when an emergency event occurs, and the first message carries the emergency event. security-related information that occurs;

The first sending module is used for the Internet of Vehicles broadcast and multicast service management entity to send the first message to all automatic driving vehicle-mounted terminals within the coverage of the base station.

Optionally, the device further includes:

The second sending module is used for the Internet of Vehicles broadcast and multicast service management entity to send the first message to the Internet of Vehicles broadcast and multicast service management entities in other base stations within a preset range, so as to Make the Internet of Vehicles broadcast and multicast service management entities in other base stations except the base station within the preset range send the first message to all the vehicles within the coverage of the base station to which the Internet of Vehicles broadcast and multicast service management entity belongs. Autonomous driving vehicle terminal.

Optionally, the receiving module is specifically used for

The Internet of Vehicles broadcast and multicast service management entity inside the base station receives the radio bearer of the Internet of Vehicles broadcast and multicast service established by the base station and the autopilot vehicle terminal in the coverage area of the base station where an emergency occurs. The first message sent by the autopilot vehicle terminal when an emergency occurs.

In a third aspect, the present invention provides a vehicle networking broadcast multicast service management entity, including: the above-mentioned automatic driving-oriented information multicast broadcast device.

In a fourth aspect, the present invention provides a base station, comprising: the above-mentioned vehicle networking broadcast multicast service management entity.

It can be seen from the above technical solutions that the method, device, management entity and base station for automatic driving information multicast broadcasting of the present invention add the Internet of Vehicles broadcast multicast service management entity locally through the base station eNB, so that the base station can directly forward the information sent by the automatic driving vehicle terminal. Security-related information does not need to be forwarded to the core network server and then delivered by the eBM-SC, which simplifies the data packet forwarding process and reduces the delay.

Description of drawings

1 is a schematic diagram of a logical architecture of an LTE system eMBMS in the prior art;

2 is a schematic flowchart of an automatic driving-oriented information multicast broadcasting method according to an embodiment of the present invention;

3 is a schematic flowchart of an automatic driving-oriented information multicast broadcasting method provided by another embodiment of the present invention;

4 is a schematic structural diagram of an automatic driving-oriented information multicast broadcasting apparatus according to an embodiment of the present invention;

5 is a schematic structural diagram of an automatic driving-oriented information multicast broadcasting apparatus according to another embodiment of the present invention;

6 is a schematic structural diagram of an Internet of Vehicles broadcast and multicast service management entity according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

FIG. 2 shows a schematic flowchart of an automatic driving-oriented information multicast broadcasting method provided by an embodiment of the present invention. As shown in FIG. 2 , the automatic driving-oriented information multicast broadcasting method of this embodiment is as follows.

201. An Internet of Vehicles broadcast and multicast service management entity within a base station receives a first message sent by an autonomous vehicle terminal within the coverage of the base station when an emergency occurs, and the first message carries the safety information of the emergency when the emergency occurs. Related Information;

In a specific application, in the step 201, the Internet of Vehicles broadcast multicast service management entity within the base station uses the Internet of Vehicles broadcast multicast established by the base station and the autonomous driving vehicle terminal within the coverage area of the base station where an emergency occurs. A radio bearer (Radio Bearer, RB for short) is used to receive a first message sent by an autopilot vehicle terminal within the coverage of the base station when an emergency occurs.

202. The Internet of Vehicles broadcast multicast service management entity sends the first message to all autonomous driving vehicle-mounted terminals within the coverage of the base station.

In a specific application, as shown in FIG. 3, after step 201, step 203 may be further included:

203. The Internet of Vehicles broadcast and multicast service management entity sends the first message to the Internet of Vehicles broadcast and multicast service management entities in other base stations except the base station within a preset range, so that the preset The Internet of Vehicles broadcast and multicast service management entity in other base stations within the range except the base station sends the first message to all autonomous driving vehicle terminals within the coverage of the base station to which the Internet of Vehicles broadcast and multicast service management entity belongs.

It should be noted that, through step 203, coordination between the vehicle networking broadcast multicast service management entities between different base stations can be performed to control the safety-related information (ie, the first message) to be propagated within a specific range.

The automatic driving-oriented information multicast broadcasting method in this embodiment uses the base station eNB to locally add a vehicle network broadcast multicast service management entity, so that the base station can directly forward the safety-related information sent by the automatic driving vehicle terminal without first forwarding it to the core network. The server then sends it through the eBM-SC, which simplifies the data packet forwarding process and reduces the delay.

FIG. 4 shows a schematic structural diagram of an automatic driving-oriented information multicast broadcasting apparatus provided by an embodiment of the present invention. As shown in FIG. 4 , the automatic driving-oriented information multicast broadcasting apparatus 1 in this embodiment includes: a receiving module 11 and a first sending module 12;

The receiving module 11 is used for the Internet of Vehicles broadcast and multicast service management entity inside the base station to receive the first message sent by the autonomous driving vehicle terminal within the coverage of the base station when an emergency event occurs, and the first message carries the emergency Security-related information about the incident;

The first sending module 12 is used for the Internet of Vehicles broadcast multicast service management entity to send the first message to all automatic driving vehicle-mounted terminals within the coverage of the base station.

In a specific application, as shown in FIG. 5 , the automatic driving-oriented information multicast broadcasting apparatus 1 in this embodiment may further include: a second sending module 13 ;

The second sending module 13 is used for the Internet of Vehicles broadcast and multicast service management entity to send the first message to the Internet of Vehicles broadcast and multicast service management entities in other base stations within a preset range except the base station, So that the Internet of Vehicles broadcast and multicast service management entities in other base stations except the base station within the preset range send the first message to the network of vehicles broadcast and multicast service management entities within the coverage of the base station to which the Internet of Vehicles broadcast and multicast service management entity belongs. All self-driving car terminals.

It should be noted that, through the second sending module 13, the Internet of Vehicles broadcast and multicast service management entities between different base stations can coordinate to control the transmission of safety-related information (ie, the first message) within a specific range.

In a specific application, the receiving module 11 in this embodiment can be specifically used for

The Internet of Vehicles broadcast and multicast service management entity inside the base station receives the radio bearer of the Internet of Vehicles broadcast and multicast service established by the base station and the autopilot vehicle terminal in the coverage area of the base station where an emergency occurs. The first message sent by the autopilot vehicle terminal when an emergency occurs.

In the automatic driving-oriented information multicast broadcasting device of this embodiment, the Internet of Vehicles broadcast multicast service management entity is added locally through the base station eNB, so that the base station can directly forward the safety-related information sent by the automatic driving vehicle terminal without first forwarding it to the core network. The server then sends it through the eBM-SC, which simplifies the data packet forwarding process and reduces the delay.

FIG. 6 shows a schematic structural diagram of an Internet of Vehicles broadcast and multicast service management entity provided by an embodiment of the present invention. As shown in FIG. 6 , the Internet of Vehicles broadcast and multicast service management entity 2 in this embodiment includes: FIG. 4 Or the automatic driving-oriented information broadcasting and multicasting apparatus 1 described in the embodiment shown in FIG. 5 .

The Internet of Vehicles broadcast and multicast service management entity in this embodiment is added locally within the base station eNB, so that the base station can directly forward the safety-related information sent by the autonomous driving vehicle terminal, without first forwarding it to the core network server and then delivering it through the eBM-SC , which simplifies the data packet forwarding process and reduces the delay.

FIG. 7 shows a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 7 , the base station 3 in this embodiment includes: the Internet of Vehicles broadcast and multicast service management described in the embodiment shown in FIG. 6 Entity 2.

In the base station of this embodiment, an Internet of Vehicles broadcast and multicast service management entity is added locally, so that the base station can directly forward the safety-related information sent by the autonomous driving vehicle terminal without first forwarding it to the core network server and then delivering it through the eBM-SC , which simplifies the data packet forwarding process and reduces the delay.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps including the above method embodiments are executed; and the foregoing storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (6)

1. An information broadcast multicast method oriented to automatic driving is characterized by comprising the following steps:

a vehicle networking broadcast multicast service management entity in a base station receives a first message sent by an automatic driving vehicle-mounted terminal in the coverage area of the base station when an emergency occurs, wherein the first message carries safety related information of the emergency;

the vehicle networking broadcast multicast service management entity sends the first message to all automatic driving vehicle-mounted terminals within the coverage range of the base station;

the method comprises the following steps that a vehicle networking broadcast multicast service management entity in the base station receives a first message sent by an automatic driving vehicle-mounted terminal in the coverage area of the base station when an emergency occurs, and specifically comprises the following steps:

and the vehicle networking broadcast multicast service management entity in the base station receives a first message sent by the automatic driving vehicle-mounted terminal in the coverage area of the base station when an emergency occurs through a vehicle networking broadcast multicast service radio bearer established by the base station and the automatic driving vehicle-mounted terminal in the coverage area of the base station when the emergency occurs.

2. The method of claim 1, wherein after receiving a first message sent by an autonomous vehicle-mounted terminal in a coverage area of the base station when an emergency occurs, the internet of vehicles broadcast multicast service management entity inside the base station further comprises:

and the vehicle networking broadcast multicast service management entity sends the first message to vehicle networking broadcast multicast service management entities in other base stations except the base station within a preset range, so that the vehicle networking broadcast multicast service management entities in other base stations except the base station within the preset range send the first message to all automatic driving vehicle-mounted terminals within the coverage range of the base station to which the vehicle networking broadcast multicast service management entity belongs.

3. An information broadcast multicast apparatus for automatic driving, comprising:

the system comprises a receiving module, a receiving module and a service management module, wherein the receiving module is used for receiving a first message sent by an automatic driving vehicle-mounted terminal within the coverage range of a base station when an emergency occurs by a vehicle networking broadcast multicast service management entity in the base station, and the first message carries safety related information of the emergency;

the first sending module is used for sending the first message to all the automatic driving vehicle-mounted terminals within the coverage range of the base station by the vehicle networking broadcast multicast service management entity;

the receiving module is particularly used for

And the vehicle networking broadcast multicast service management entity in the base station receives a first message sent by the automatic driving vehicle-mounted terminal in the coverage area of the base station when an emergency occurs through a vehicle networking broadcast multicast service radio bearer established by the base station and the automatic driving vehicle-mounted terminal in the coverage area of the base station when the emergency occurs.

4. The apparatus of claim 3, further comprising:

and the second sending module is used for sending the first message to the car networking broadcast multicast service management entities in other base stations except the base station in a preset range by the car networking broadcast multicast service management entity so that the car networking broadcast multicast service management entities in other base stations except the base station in the preset range send the first message to all the automatic driving vehicle-mounted terminals in the coverage range of the base station to which the car networking broadcast multicast service management entity belongs.

5. An internet of vehicles broadcast multicast service management entity, comprising: the autopilot-oriented information broadcast multicast apparatus of any one of claims 3-4.

6. A base station, comprising: the internet of vehicles broadcast multicast service management entity of claim 5.

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