CN106973356B

CN106973356B - Method and device for transmitting V2X message

Info

Publication number: CN106973356B
Application number: CN201610021959.2A
Authority: CN
Inventors: 王弘; 许丽香; 柯小婉
Original assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Priority date: 2016-01-13
Filing date: 2016-01-13
Publication date: 2021-08-24
Anticipated expiration: 2036-01-13
Also published as: WO2017122976A1; CN106973356A

Abstract

The application discloses a method for transmitting V2X message, comprising: a first base station receives an uplink V2X message sent by User Equipment (UE), and sends a downlink V2X message generated according to the uplink V2X message to the UE within the coverage of the first base station; the first base station sends the downlink V2X message or the radio resource configuration information allocated to the downlink V2X message to the second base station under another operator, so that the second base station sends the downlink V2X message or the radio resource configuration information to the UEs in its coverage, and the radio resource configuration information is used for the UEs in the coverage of the second base station to receive the downlink V2X message on the resource indicated by the information. By applying the method and the device, users of different operators can receive the V2X message.

Description

Method and device for transmitting V2X message

Technical Field

The present invention relates to wireless communication technologies, and in particular, to a method and an apparatus for transmitting a V2X message.

Background

Modern mobile communications are increasingly tending to provide users with high-rate transmission multimedia services, as shown in fig. 1, which is a system architecture diagram of System Architecture Evolution (SAE). Wherein:

a User Equipment (UE)101 is a terminal device for receiving data. An evolved universal terrestrial radio access network (E-UTRAN)102 is a radio access network that includes macro base stations (eNodeB/NodeB) that provide access to a radio network interface for UEs. A Mobility Management Entity (MME)103 is responsible for managing mobility context, session context and security information of the UE. Serving Gateway (SGW)104 mainly provides the functions of the user plane, and MME 103 and SGW 104 may be in the same physical entity. A packet data network gateway (PGW)105 is responsible for charging, lawful interception, etc., and may also be in the same physical entity as the SGW 104. A Policy and Charging Rules Function (PCRF)106 provides quality of service (QoS) policy and charging criteria. The general packet radio service support node (SGSN)108 is a network node device in the Universal Mobile Telecommunications System (UMTS) that provides routing for the transmission of data. The Home Subscriber Server (HSS)109 is the home subsystem of the UE and is responsible for protecting user information including the current location of the user equipment, the address of the serving node, user security information, the packet data context of the user equipment, etc.

With the rapid development of vehicles, the problem of road safety is increasingly highlighted. In the face of frequent traffic accidents, the space for reducing road traffic accidents by adopting traditional methods such as traffic infrastructure improvement, traffic safety education enhancement and the like is more and more limited; therefore, the information communication technology is used to enhance the judgment of people on the surrounding environment of the vehicle through the communication between the vehicle and between the vehicle and roadside facilities, and when the occurrence of a road danger condition is detected, a timely early warning is provided for a driver and other vehicles to avoid traffic collision. The technology is called V2X, namely, communication from a vehicle to any equipment is a key technology of a future intelligent transportation system, and loss caused by traffic accidents can be effectively reduced through the V2X technology.

V2X includes Vehicle-to-Vehicle communication (V2V), Vehicle-to-Infrastructure communication (V2I), and Vehicle-to-person communication (V2P). The three V2X communication mechanisms provide intelligent services to the driver by sensing each other. These transmission facilities, such as vehicles, roadside devices or pedestrians, can collect information of their own nearby environment using information transmitted from other vehicles or sensors, and provide more intelligent services such as collision warning or automatic driving by sharing the information. These intelligent services can be divided into three categories:

one is related to road safety, which includes: when the vehicle finds that danger is near, for example, an obstacle exists in front of the vehicle, other vehicles can be reminded in time; secondly, the vehicle can inform other vehicles of the traveling direction of the vehicle so as to help drivers of the other vehicles to make more accurate judgment; thirdly, when approaching the intersection, reminding other vehicles; fourthly, when the vehicle leaves the highway, the vehicle is prompted to other vehicles; fifthly, early warning of temporary/sudden stop; reminding when the vehicle changes the line; seventhly, reporting the accident; and eighthly, reminding the roadside pedestrians/cyclists by the automobile driver.

And secondly, the traffic efficiency is related, wherein the traffic efficiency can be helped to dredge traffic flow, and effective measures can be taken on congestion in real time. The management department can flexibly implement traffic regulations according to specific conditions, such as: adjustable speed limit, variable signal light cycle and light flash sequence, intersection automotive flow control, ambulance/fire truck/police car drive-in.

Third, other applications, such as intelligent transportation, may provide for automatic parking, navigational status, landmark recognition, and the like. For law enforcement such as police, V2X facilitates monitoring, speed warning, restricted area management, implementation of parking commands, etc. Through the mode of electronic payment, V2X makes the collection of toll/parking fee more swift convenient, alleviates the congestion of traffic flow to a certain extent, reduces the low-speed rear-end collision accident that often takes place near the toll station.

For V2V service, the E-UTRAN enables the UE (here, for V2V service, the vehicle can be regarded as UE, the same shall apply hereinafter) to interact with other neighboring UEs for V2V related information, and the information related to V2V interaction needs to satisfy the authentication and proximity principles of the E-UTRAN. The proximity principle is configured by an operator, and the UE can also interact with V2V related information when not in the E-UTRAN service area. The UE supporting the V2V application transmits application layer information, such as its location, attributes, etc. The length of V2V application layer messages is variable to accommodate different information content, and the operator can configure V2V messages to be sent in a periodic fashion. The message of V2V is mainly a broadcast message. The message of V2V may be sent directly to neighboring UEs or sent to other UEs through a Road Side Unit (RSU).

The V2I service is a UE supporting V2I application (here, for V2I service, the vehicle may be regarded as a UE, the same applies hereinafter) sending application layer information to the RSU, which sends the application layer information to a group or one UE supporting V2I application.

For V2P service, the E-UTRAN allows the UE (here, for V2P service, the vehicle may act as a UE, the same applies hereinafter) to interact with other nearby UEs for V2P-related information. The information related to the interactive V2P needs to satisfy the authentication and proximity principles of E-UTRAN. The proximity principle is configured by an operator, and the UE can also interact with V2P related information when not in the E-UTRAN service area. The message of V2P may be sent directly to a neighboring UE or to other UEs through a roadside device RSU.

Communication of V2X may be through the application layer protocol PC5 or through the Uu interface. The V2X message is generally related to public safety, and thus, it is necessary to inform UEs of different operators within a corresponding area of the V2X message.

Disclosure of Invention

The invention provides a method and a device for transmitting a V2X message. By the invention, the data of the V2X service can be sent to all related UE, thereby reducing the occurrence of traffic accidents and improving the traffic efficiency.

In order to achieve the purpose, the following scheme is adopted in the application:

a method of transmitting a vehicle-to-arbitrary device communication V2X message, comprising:

a first base station receives an uplink V2X message sent by User Equipment (UE), and sends a downlink V2X message generated according to the uplink V2X message to the UE within the coverage of the first base station;

the first base station sends the downlink V2X message or the radio resource configuration information allocated by the first base station to the downlink V2X message to a second base station under an operator other than the operator where the first base station is located, so that the second base station sends the downlink V2X message or the radio resource configuration information to UEs in its coverage area; wherein the radio resource configuration information is used for the UE in the coverage area of the second base station to receive the downlink V2X message on the resource indicated by the information.

Preferably, the first base station sends the downlink V2X message to UEs in its coverage area in a broadcast manner or a unicast manner; and/or the presence of a gas in the gas,

and when the second base station sends the downlink V2X message to the UE in the coverage area of the second base station, the second base station adopts a broadcast mode or a unicast mode.

Preferably, when the downlink V2X message is sent to the other base stations, the message is transmitted through an X2 interface or an S1 interface between the base stations; and/or the presence of a gas in the gas,

and transmitting the radio resource configuration information to the second base station through an X2 interface or an S1 interface between the base stations.

Preferably, the sending the downlink V2X message or the radio resource configuration information through the X2 interface between the base stations includes: transmitting the downlink V2X message or the radio resource configuration information through a control plane or a user plane of X2.

Preferably, the sending the downlink V2X message or the radio resource configuration information through the S1 interface between the base stations includes: the first base station sends an eNB configuration transmission message to a core network, the eNB configuration transmission message comprises information of the second base station and the downlink V2X message or the radio resource configuration information, and the core network carries the downlink V2X message or the radio resource configuration information in a Mobile Management Entity (MME) configuration transmission message according to the received eNB configuration transmission message and sends the message to the second base station.

Preferably, after receiving the radio resource configuration information, the second base station sends the downlink V2X message to the UE in the coverage area of the second base station in a broadcast or unicast manner.

a V2X application layer service module connected with a first base station receives an uplink V2X message sent by User Equipment (UE) through the first base station, and sends a downlink V2X message generated according to the uplink V2X message to the UE within the coverage of the first base station through the first base station;

and the V2X application layer service module connected to the first base station sends the downlink V2X message to a second base station under an operator other than the operator where the first base station is located, so that the second base station sends the downlink V2X message to UEs in the coverage area of the second base station.

Preferably, the V2X application layer service module sends the downlink V2X message to UEs in its coverage area by using a broadcast manner or a unicast manner through the first base station; and/or the presence of a gas in the gas,

Preferably, when the downlink V2X message is sent to the second base station, the transmission is performed through an interface between a V2X application layer service module connected to the first base station and a V2X application layer service module connected to the second base station, or the transmission is performed through an interface between a V2X application layer service module connected to the first base station and the second base station, or the transmission is performed through an interface between a node of an enhanced multimedia broadcast multicast service eMBMS where the first base station is located and an eMBMS node where the second base station is located, or the transmission is performed through an interface between an eMBMS control node MCE where the first base station is located and the second base station.

Preferably, the way for the V2X application layer service module to send the generated downlink V2X message to the first base station includes: the V2X application layer service module forwards the downlink V2X message to the first base station through an eMBMS service control center (BMSC) of an operator where the first base station is located, a multimedia broadcast multicast service gateway (MBMS-GW), an MME and a MCE;

transmitting the downlink V2X message through an interface between a node of an eMBMS in which the first base station is located and an eMBMS node in which the second base station is located includes:

the V2X application layer service module connected to the first base station sends the downlink V2X message to the BMSC of the operator where the first base station is located, and forwards the message to the MCE of the operator where the second base station is located through the MBMS-GW and MME of the operator where the second base station is located, or the V2X application layer service module connected to the first base station sends the downlink V2X message to the BMSC of the operator where the first base station is located, and forwards the message to the MCE of the operator where the second base station is located through the MBMS-GW and MME of the operator where the first base station is located, so that the MCE sends the downlink V2X message to the second base station.

Preferably, the way for the V2X application layer service module to send the generated downlink V2X message to the first base station includes: the V2X application layer service module forwards the downlink V2X message to the first base station through the BMSC, the MBMS-GW, the MME and the MCE of the operator where the first base station is located;

transmitting the downlink V2X message through an interface between the MCE where the first base station is located and the second base station includes: and the V2X application layer service module connected with the first base station sends the downlink V2X message to the BMSC of the operator where the first base station is located, and forwards the message to the MCE of the operator where the second base station is located through the MBMS-GW and the MME of the operator where the second base station is located, so that the MCE sends the downlink V2X message to the second base station through an interface between the MCE and the second base station in advance.

a first base station supporting V2X capability interacts configuration information with base stations of other operators except the operator where the first base station is located, wherein the configuration information comprises whether the base station supports V2X capability and frequency information of V2X message transmission of the base station;

the first base station sends the V2X configuration information to the UE in its coverage area according to the interacted configuration information, where the V2X configuration information includes frequency information of V2X messages transmitted by base stations of other operators, and is used for the UE to receive downlink V2X messages of the base stations of the other operators on the frequency.

Preferably, the V2X information interacted between different base stations is transmitted through an X2 interface or an S1 interface between the base stations.

Preferably, the V2X configuration information further includes frequency information of V2X message transmitted by the first base station.

A method of receiving a vehicle-to-any device communication V2X message, comprising:

the method comprises the steps that User Equipment (UE) within the coverage range of a second base station receives configuration information of V2X sent by a first base station through the second base station; the first base station is a base station for bearing and broadcasting a downlink V2X message through an enhanced multimedia broadcast multicast service (eMBMS), and the second base station and the first base station are different in operator;

and the UE determines that the first base station broadcasts the downlink V2X message on an eMBMS bearer identified by a Terminal Mobile Group Identifier (TMGI) used by an operator where the first base station is located according to the received configuration information of the V2X and a local mapping table, and receives the downlink V2X message transmitted on the eMBMS bearer, wherein the mapping table comprises the mapping relationship between the configuration information of the V2X and the TMGI.

Preferably, the mapping table includes a mapping relationship between the TMGIs of two different operators where the second base station and the first base station are located, the mapping table is stored in the second base station, and the configuration information of V2X includes the TMGI1 that the first base station identifies the eMBMS bearer; the TMGI1 is replaced with the TMGI2 used by the second base station according to the mapping table when forwarding in the second base station.

Preferably, the mapping table includes a mapping relationship between the TMGI of the operator where the first base station is located and the service identifier of V2X, and the configuration information of V2X includes the service identifier of V2X;

and the UE determines that the first base station broadcasts the downlink V2X message on the eMBMS bearer identified by the TMGI1 according to the received configuration information of the V2X and the mapping relation between the service identification of the V2X and the TMGI1 in the mapping table.

a setting node of an operator where the first base station or the second base station is located receives a downlink V2X message transmitted from the first base station to the second base station; the first base station is a base station which broadcasts the downlink V2X message through an eMBMS bearer, and the set node is an eMBMS forwarding node which transmits a V2X message to the second base station by an operator where the first base station is located;

the setting node replaces the TMGI1 carried by the eMBMS identified by the first base station by the TMGI2 used by the second base station according to a local mapping table, and is used for the UE within the coverage range of the second base station to receive the downlink V2X message broadcast by the second base station; the mapping table comprises a mapping relation between Terminal Mobile Group Identifications (TMGI) of two different operators where the first base station and the second base station are located;

and the set node sends out the downlink V2X message after replacing the TMGI.

A method of transmitting a vehicle-to-arbitrary device communication V2X, comprising:

a base station receives an uplink V2X message reported by UE;

the base station broadcasts a downlink V2X message generated according to the uplink V2X message;

the downlink V2X message is broadcasted through an enhanced multimedia broadcast multicast service eMBMS bearer identified by a dedicated terminal mobile group identity TMGI, the dedicated TMGI is a TMGI which is pre-allocated for V2X and does not include an operator identity, and for the same V2X service, all operators use the same dedicated TMGI.

An apparatus for transmitting a vehicle-to-any device communication V2X message, comprising: an uplink message receiving unit, a User Equipment (UE) sending unit and a base station sending unit;

the uplink message receiving unit is configured to receive an uplink V2X message sent by a user equipment UE;

the UE sending unit is used for sending the downlink V2X message generated according to the uplink V2X message to the UE within the coverage range of the base station;

the base station sending unit is configured to send the downlink V2X message or the radio resource configuration information allocated by the base station for the downlink V2X message to a second base station in an operator other than the operator where the base station is located, where the second base station is configured to send the downlink V2X message or the radio resource configuration information to UEs in a coverage area of the second base station; wherein the radio resource configuration information is used for the UE in the coverage area of the second base station to receive the downlink V2X message on the resource indicated by the information.

An apparatus for transmitting a vehicle-to-any device communication V2X message, the apparatus comprising: an uplink message receiving unit, a User Equipment (UE) sending unit and a base station sending unit;

the uplink message receiving unit is configured to receive, through a base station connected to the uplink message receiving unit, an uplink V2X message sent by a user equipment UE within a coverage area of the base station;

the UE sending unit is used for sending the downlink V2X message generated according to the uplink V2X message to the UE within the coverage range of the base station through the base station connected with the UE sending unit;

the base station sending unit is configured to send the downlink V2X message to a second base station under another operator, and is configured to send the downlink V2X message to the UE in the coverage area of the second base station.

An apparatus for transmitting a V2X message, the apparatus comprising: a configuration information interaction unit and a V2X configuration information sending unit;

the configuration information interaction unit is used for interacting configuration information with base stations of other operators except the operator where the base station is located, wherein the configuration information comprises the capability of whether the base station supports V2X and frequency information of V2X message transmission of the base station;

the V2X configuration information sending unit is configured to send V2X configuration information to user equipment UE in a coverage area of the UE according to the interacted configuration information, where the V2X configuration information includes frequency information of V2X messages transmitted by base stations of other operators, and is used for the UE to receive downlink V2X messages of the base stations of the other operators on the frequency.

A receiving apparatus of a vehicle-to-arbitrary device communication V2X message, comprising: a configuration information receiving unit and a V2X receiving unit;

the configuration information receiving unit is used for receiving the configuration information of V2X sent by the first base station through the second base station; the first base station is a base station for bearing and broadcasting a downlink V2X message through an enhanced multimedia broadcast multicast service (eMBMS), and the second base station and the first base station are different in operator;

the V2X receiving unit is configured to determine, according to the received configuration information of the V2X and a local mapping table, that the first base station broadcasts the downlink V2X message on an eMBMS bearer identified by a Terminal Mobile Group Identity (TMGI) used by an operator where the first base station is located, and receives the downlink V2X message transmitted on the eMBMS bearer; wherein the mapping table includes a mapping relationship between the configuration information of the V2X and the TMGI.

An apparatus for transporting vehicle-to-any device communication V2X messages, the apparatus located at an enhanced multimedia broadcast multicast service eMBMS forwarding node where a first base station transmits a V2X message to a second base station, the apparatus comprising: a V2X receiving unit, a Terminal Mobile Group Identification (TMGI) converting unit and a V2X transmitting unit;

the V2X receiving unit, configured to receive a downlink V2X message transmitted by the first base station to the second base station; wherein the first base station is a base station broadcasting the downlink V2X message through an eMBMS bearer;

the TMGI conversion unit is configured to replace, according to a local mapping table, the TMGI1, which is identified by the first base station and carried by the eMBMS, with the TMGI2 used by the second base station, so that the UE in the coverage area of the second base station receives a downlink V2X message broadcast by the second base station; the mapping table comprises a mapping relation between Terminal Mobile Group Identifications (TMGI) of two different operators where the first base station and the second base station are located;

and the V2X sending unit is configured to send the downlink V2X message after the TMGI is replaced.

An apparatus for transmitting a vehicle-to-arbitrary device communication V2X, comprising: a receiving unit and a broadcasting unit;

the receiving unit is configured to receive an uplink V2X message reported by the UE;

the broadcasting unit is used for broadcasting a downlink V2X message generated according to the uplink V2X message;

As can be seen from the foregoing technical solutions, in the present application, after acquiring the downlink V2X message, the first base station or the V2X application layer service module sends the downlink V2X message or the radio resource configuration information allocated to the downlink V2X message to the second base station in the same coverage area or an adjacent coverage area to the first base station in other operators, so that the second base station can send the downlink V2X message or the radio resource configuration information to the UEs in its coverage area, so that all relevant UEs can receive the V2X message, thereby reducing the occurrence of traffic accidents and providing traffic efficiency. Or after configuration information is exchanged among the operators, the V2X capability of a base station of another operator and the frequency information of the transmission V2X are acquired, and the first base station carries the frequency information of the V2X of the second base station supporting the V2X capability under another operator having the same coverage area as the first base station or an adjacent coverage area with the first base station in the V2X configuration information and sends the frequency information to the UE in the coverage area of the first base station, so that the UE in the coverage area of the first base station can receive not only the V2X message sent by the first base station but also the V2X message sent by the second base station, thereby reducing the occurrence of traffic accidents and providing traffic efficiency.

Drawings

FIG. 1 is a diagram of a conventional SAE system architecture;

fig. 2 is a schematic basic flow chart of a first V2X message transmission method in the present application;

fig. 3 is a schematic basic flow chart of a second V2X message transmission method in the present application;

FIG. 4 is a schematic diagram of a first embodiment of the present application;

FIG. 5 is a schematic diagram of a second embodiment of the present application;

FIG. 6 is a schematic diagram of a third embodiment of the present application;

FIG. 7 is a schematic view of a fourth embodiment of the present application;

FIG. 8 is a schematic diagram of a fifth embodiment and a sixth embodiment of the present application;

FIG. 9 is a schematic illustration of a seventh embodiment of the invention;

FIG. 10 is a schematic diagram of an eighth embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical means and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.

For V2X service, communicating vehicles may belong to different operators. As described in the background, the V2X message needs to be notified to UEs of different operators in the corresponding area. To achieve this, it is necessary to study how to provide V2X services to users of different operators. In terms of frequency, different operators may share a frequency, where vehicles of different operators may communicate on the same frequency. Different operators may have different frequency ranges, where the UE only transmits data on frequencies supported by its own operator. The message of V2X, because of security concerns, needs to be received by all relevant UEs, regardless of the operator to which the UE belongs. For example, a vehicle collision occurs on the road, the vehicle sends the message (vehicle collision) to the RSU, and the application layer generates a new V2X message that sends the situation of this collision to the other vehicles on the road. On this way, there are UEs belonging to different operators, which should all be able to receive the V2X message sent by the application layer.

In order to realize that the UE of different operators can receive the V2X message, the application provides two transmission methods of the V2X message, in the first method, a base station or a V2X application layer service module connected with the base station sends the generated downlink V2X message or the wireless resource configuration information of the V2X to the base stations of other operators, so that users of different operators can receive the V2X message; in the second method, the UE is sent the frequency information of the base station of another operator, so that the UE can receive not only the V2X message sent by the own base station, but also the downlink V2X message sent by the base station of another operator.

Fig. 2 is a basic flowchart of a first V2X message transmission method according to the present application. Fig. 2 illustrates that base stations belonging to different operators interact with V2X messages or wireless configuration information of V2X, and by the method, users of different operators can receive V2X messages, thereby reducing traffic accidents and improving traffic efficiency. The information interaction can be through an X2 interface between base stations, or through an S1 interface, or through an interface between V2X application layer service modules, or a newly defined interface between a V2X application layer service module and a base station, that is, a new interface is defined between a V2X application layer service module of one operator and a base station of another operator. According to the transmission mode of V2X, there may be other interfaces, for example, V2X may transmit via eMBMS bearer of operator 1, and one node of eMBMS (e.g., BMSC, MBMS GW, or MCE) and one node of another operator (e.g., MBMS GW, MCE, or base station) have an interface through which V2X messages or V2X radio configuration information are transmitted.

Step 201: and the operators exchange configuration information in advance.

Step 201 is an optional step. The configuration information of the interaction can be various, such as whether the base station has the capability of V2X and/or the frequency allocated by the operator for each base station to transmit V2X messages. This information exchange may be transmitted through OAM configuration, or through an X2 interface between base stations, or through an S1 interface.

If the transmission is carried out through the X2 interface, the X2 interface establishment request message sent by the base station 1 to the base station 2 contains the frequency of V2X message transmission of the base station 1, the capability of whether the base station 1 supports V2X and other information. The X2 interface setup response message sent by the bs 2 to the bs 1 includes information such as the frequency of V2X message transmission by the bs 2, and whether the bs 2 supports V2X capability.

If the information is transmitted through the S1 interface, the information of the frequency of V2X message transmitted by the base station 1, the capability of V2X supported by the base station 1 and the like is contained in the S1 message transmitted by the base station 1 to the base station 2. The S1 message sent by bs 2 to bs 1 includes information such as the frequency of V2X message transmission by bs 2, and whether bs 2 supports V2X capability.

Step 202: the UE sends an uplink V2X message to base station 1.

Wherein the base station 1 belongs to an operator 1.

The UE supports the V2X capability, the UE obtains the position of the UE and the traffic condition of the road through a sensor, and the UE sends the information to the base station 1 through an uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode. The V2X application layer service module sends a downlink V2X message to the base station.

Step 203: the base station 1 configures downlink wireless resources and sends a downlink V2X message to users within the range of the base station 1.

Base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single-cell broadcasting mode or a broadcasting mode through a broadcasting channel.

Step 204: the base station 1 or the V2X application layer service module sends the downlink V2X message or the radio resource configuration information allocated by the base station 1 for the V2X message to the base station 2.

Wherein the base station 1 belongs to an operator 1 and the base station 2 and the base station 1 belong to different operators, e.g. to operator 2.

The base station 1 receives the uplink V2X message of the user, the base station 1 forwards the message to the V2X application layer service module, the V2X application layer service module generates the downlink V2X message, and the downlink V2X message is sent to the base station 1. According to the configuration information interacted in step 201, the base station 1 or the V2X application layer service module knows that the base station 1 needs to notify the downlink V2X message to the users below the base station 2, and specifically needs to notify the users below the base station, which is not specifically limited in the present application, and may be specified in the downlink V2X message or other interface messages according to actual needs, or may be specified in other manners. For example, base station 1 has base station 2 of operator 2 under its coverage area, and base station 1 and base station 2 have overlapping coverage areas or adjacent areas). The base station 1 or the V2X application layer service module sends the downlink V2X message to the base station 2, and the message is sent in the following ways:

transmitting through an X2 interface;

transmitting through an S1 interface;

transmitting through an interface between V2X application layer service modules connected with a base station;

transmitting through an interface between a V2X application layer service module connected with the base station and the base station;

through an interface between a node of the eMBMS in which the base station 1 is located and an eMBMS node in which the base station 2 is located;

through the interface between the MCE where the base station 1 is located and the base station 2;

these modes are described in detail in the following examples.

Alternatively, the base station 1 or the V2X application layer service module may also send the radio resource configuration information allocated for the downlink V2X message to the base station 2, where the sending of the information may be performed through an X2 interface or an S1 interface between the base stations, or may also be sent to the base station 2 through an eMBMS node (e.g., MME) of the operator where the base station 1 is located.

Step 205: the base station 2 sends downlink V2X message to the UE or the base station 1 sends the wireless resource configuration information allocated for the V2X message to the UE in the coverage area.

The base station 2 receives the downlink V2X message sent by the base station 1 or the V2X application layer service module, and the base station 2 sends the downlink V2X message to the UE by broadcasting.

Or the base station 2 receives the radio resource configuration information which is transmitted by the base station 1 and allocated by the base station 1 for the V2X message, and the base station 2 transmits the radio resource configuration information of the V2X to the UE in a broadcasting or unicast mode. The radio resource configuration information is a radio resource configured by the base station 1 of the operator 1. After receiving the configuration, the UE in the coverage of the base station 2 may listen to the V2X message broadcast by the base station 1 at the corresponding time and resource, for example, if the

base stations

1 and 2 use the same frequency, the UE listens to the V2X message broadcast by the base station 1 at the corresponding time and resource in a TDD manner, if the

base stations

1 and 2 use different frequencies, the UE has no capability of receiving two frequencies simultaneously, and the UE switches to the frequency of the base station 1 to listen to the V2X message at the time of V2X broadcast. If the UE has the ability to receive both frequencies simultaneously, the UE turns on the frequency of base station 1 to listen to the V2X message at the time of the V2X broadcast.

Fig. 3 is a basic flowchart of a second V2X message transmission method according to the present application. This fig. 3 depicts base station interaction V2X information belonging to different operators and broadcasting information of nearby V2X to UEs. By the method, users of different operators can receive the V2X message, traffic accidents are reduced, and traffic efficiency is improved. The interaction of information may be configured through an X2 interface between base stations, or through an S1 interface, or through operation and maintenance.

Step 301: and the operators exchange configuration information in advance.

The configuration information may include the frequency allocated by the operator for each base station to transmit the V2X message, whether the base station has the capability of V2X, and the like. This information exchange may be transmitted through OAM configuration, or through an X2 interface between base stations, or through an S1 interface.

For example, base station 1 sends base station 1's V2X information to base station 2. When the V2X information of the base station 1 is transmitted through the X2 interface, it can be carried in the X2 establishment request message; when the V2X information of the base station 1 is transmitted through the S1 interface, the base station 1 may send an eNB configuration transmission message to the core network, where the message carries the V2X information of the base station 1, and the core network sends an MME configuration transmission message to the base station 2, where the message carries the V2X information of the base station 1. Or through OAM configuration.

Base station 2 sends the V2X information for base station 2 to base station 1. When the V2X information of the base station 2 is transmitted through the X2 interface, it may be carried in the X2 setup response message; when the V2X information of the base station 2 is transmitted through the S1 interface, the base station 2 may send an eNB configuration transmission message to the core network, where the message carries the V2X information of the base station 2, and the core network sends an MME configuration transmission message to the base station 1, where the message carries the V2X information of the base station 2. Or through OAM configuration.

Step 302: the base station 1 supporting the V2X capability transmits the V2X configuration information to the UE.

According to the configuration information in step 301, the base station 1 determines that the base station 2 has an overlapping coverage area or an adjacent area with itself, so that V2X configuration information is formed according to the configuration information of the base station 2 and sent to the UE within the coverage area. Wherein, the V2X configuration information at least includes the frequency used by the base station 2 to transmit the V2X message. For example, in this embodiment, bs 1 transmits V2X message on frequency 1, bs 2 transmits V2X message on frequency 2, and the configuration information of V2X at least contains frequency 2, and bs 1 informs the UE that bs 1 supports V2X, and the UE has obtained bs 1 frequency as frequency 1 from the existing broadcast information, so that the UE knows that V2X message is broadcast on frequency 1 and frequency 2. A capable UE may receive the V2X message sent on frequency 1 and frequency 2 simultaneously. Of course, the configuration information at V2X may also directly contain frequency 1.

Step 303: the base station 2 supporting the V2X capability transmits the V2X configuration information to the UE.

According to the configuration information in step 301, the base station 2 determines that the base station 1 has an overlapping coverage area with itself, so that V2X configuration information is formed according to the configuration information of the base station 1 and sent to the UEs within the coverage area. Wherein, the V2X configuration information at least includes the frequency used by the bs 1 to transmit the V2X message. For example, in this embodiment, the bs 1 transmits the V2X message on frequency 1, the bs 2 transmits the V2X message on frequency 2, and the configuration information of V2X at least contains frequency 1, and the bs 2 informs the UE that the bs 2 supports V2X, and the UE has obtained the frequency of bs 2 as frequency 2 from the existing broadcast information, so that the UE knows that the V2X message is broadcast on frequency 1 and frequency 2. A capable UE may receive the V2X message sent on frequency 1 and frequency 2 simultaneously. Of course, the configuration information at V2X may also directly contain frequency 2.

The following describes a specific implementation of the first method for transmitting V2X messages by eight embodiments. In the first method for transmitting V2X messages, two specific implementations can be adopted.

Specifically, the first implementation manner includes: the base station 1 receives an uplink V2X message sent by the UE, and sends a downlink V2X message generated according to the uplink V2X message to the UE within the coverage of the base station 1; the base station 1 sends the downlink V2X message or the radio resource configuration information allocated by the base station 1 for the downlink V2X message to the base station 2 under another operator (for example, a base station having the same coverage area as or adjacent to the base station 1), so that the base station 2 sends the downlink V2X message or the radio resource configuration information to the UEs within its coverage area. Wherein, the radio resource configuration information is used for the UE in the coverage area of the base station 2 to receive the downlink V2X message on the resource indicated by the information.

The second implementation mode comprises the following steps: a V2X application layer service module connected with the base station 1 receives an uplink V2X message sent by user equipment UE through the base station 1, and sends a downlink V2X message generated according to the uplink V2X message to the UE within the coverage of the base station 1 through the base station 1; the V2X application layer service module connected to the base station 1 sends a downlink V2X message to the base station 2 under another operator (for example, a base station having the same coverage area as or adjacent to the base station 1), so that the base station 2 sends a downlink V2X message or radio resource configuration information to UEs within its coverage area.

The following first, second, seventh and eighth embodiments describe the information interaction processing procedure in the first implementation, and the third to sixth embodiments describe the information interaction processing procedure in the second implementation.

Fig. 4 is a first embodiment of the present application. Fig. 4 illustrates the processing of the base station interactive V2X messages belonging to different operators, by which users of different operators can receive downlink V2X messages, reducing traffic accidents, and improving traffic efficiency. The information exchange can be through an X2 interface between base stations.

Step 401: the UE sends an uplink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 401, step 201 in fig. 2 may be executed, or step 201 may not be executed. The processing of step 201 is not described in detail here.

In step 401, the UE supports the V2X capability, obtains its own location and the traffic conditions of the road through the sensor, and sends these information to the base station 1 through the uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode.

Step 402: the V2X application layer service module sends a downlink V2X message to base station 1.

Step 403: the base station 1 configures downlink radio resources for the downlink V2X message, and then sends a downlink V2X message to users within the range of the base station.

Typically, the base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single cell broadcasting mode, a broadcasting mode through a broadcasting channel, or other broadcasting modes. Alternatively, the base station 1 may also transmit the downlink V2X message in a unicast manner. The step 403 includes different procedures according to the method of sending the downstream V2X message. If the MBSFN mode or the single cell broadcast mode is used, step 403 includes that the base station 1 sends the MBSFN radio resource configuration information to the UE, and then sends the downlink V2X message on the resource. If the downlink V2X message is broadcast via the broadcast channel, the step 403 includes the base station 1 directly sending the downlink V2X message to the UE via a newly defined broadcast message. If the other broadcast or unicast mode is used, the step 403 includes configuring the radio resource used by broadcast or unicast, and then sending the downstream V2X message on the resource.

Step 404: base station 1 forwards the downlink V2X message to base station 2. The base station 2 and the base station 1 belong to different operators, e.g. the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.

The base station 1 and the base station 2 have an overlapped coverage area or an adjacent area, the base station 1 belongs to an operator 1, the base station 2 belongs to an operator 2, the base station 1 receives an uplink V2X message of a user, the base station 1 forwards the message to a V2X application layer service module, the V2X application layer service module generates a downlink V2X message, and the downlink V2X message is sent to the base station 1. According to the information configured in step 201, the base station 1 knows that there is base station 2 of operator 2 under the coverage area, and the base station 1 needs to notify the user under the base station 2 of the downlink V2X message. The X2 interface is established between the base station 1 and the base station 2, and the base station 1 sends a downlink V2X message to the base station 2. The message may be sent over the control plane of X2 or over the user plane.

Step 405: the base station 2 configures downlink radio resources for the downlink V2X, and then sends a downlink V2X message to users within the range of the base station.

Likewise, the step 405 includes different procedures depending on the method of sending the downstream V2X message. Reference may be made specifically to the method of step 403.

Thus, the embodiment is finished.

Fig. 5 is a second embodiment of the present application. Fig. 5 illustrates the interaction of V2X messages by the base station belonging to different operators, by which the users of different operators can receive the V2X messages, reducing traffic accidents and improving traffic efficiency. The information interaction may be through an S1 interface between base stations.

Step 501: the UE sends an uplink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 501, step 201 in fig. 2 may be executed, or step 201 may not be executed. The processing of step 201 is not described in detail here.

In step 501, the UE supports the V2X capability, obtains its own location and road traffic conditions through a sensor, and sends these information to the base station 1 through an uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode.

Step 502: the V2X application layer service module sends a downlink V2X message to base station 1.

Step 503: the base station 1 configures downlink radio resources for the downlink V2X message, and then sends a downlink V2X message to users within the range of the base station.

Typically, the base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single cell broadcasting mode, a broadcasting mode through a broadcasting channel, or other broadcasting modes. Alternatively, the base station 1 may also send the downlink V2X message to the user in a unicast manner. 503, the steps include different procedures depending on the method of sending the downstream V2X message. If the MBSFN mode or the single cell broadcast mode is used, step 503 includes that the base station 1 sends the MBSFN radio resource configuration information to the UE, and then sends data on the resource. If the downlink V2X message is broadcast via the broadcast channel, step 503 involves the base station 1 directly sending the downlink V2X message to the UE via a newly defined broadcast message. If via other broadcast or unicast, step 503 comprises configuring the radio resource used by broadcast or unicast, and then sending the downstream V2X message on the resource.

Step 504: base station 1 forwards the downlink V2X message to base station 2. The base station 2 and the base station 1 belong to different operators, e.g. the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.

The base station 1 and the base station 2 have an overlapped coverage area or an adjacent area, the base station 1 belongs to an operator 1, the base station 2 belongs to an operator 2, the base station 1 receives an uplink V2X message of a user, the base station 1 forwards the message to a V2X application layer service module, the V2X application layer service module generates a downlink V2X message, and the downlink V2X message is sent to the base station 1. Based on the information configured in step 201, the base station 1 knows that there is base station 2 of operator 2 under the coverage area, and the base station 1 needs to notify the user under the base station 2 of the message of V2X. There is no X2 interface between base station 1 and base station 2, and base station 1 sends downlink V2X message to base station 2 through S1 interface. The base station 1 sends an eNB configuration transmission message to a core network, the message carries information of a target base station and a downlink V2X message, the core network sends an MME configuration transmission message to the base station 2, and the message carries a downlink V2X message. The transport between core networks may include two MME nodes, the MME1 connected to base station 1 finds the MME2 connected to base station 2 by the destination address in the message, and then the MME1 sends the message to base station 2 through the MME 2.

Step 505: the base station 2 configures downlink radio resources for the downlink V2X message, and then sends a downlink V2X message to users within range of the base station.

Similarly, the step 505 includes different procedures depending on the method of sending the downstream V2X message. Reference may be made specifically to the method of step 503.

So far, the second embodiment is ended.

Fig. 6 is a third embodiment of the present application. Fig. 6 describes the processing of V2X application layer service module interactive V2X messages belonging to different operators, by which users of different operators can receive downlink V2X messages, reducing traffic accidents, and improving traffic efficiency. The interaction of information may be through an interface between V2X application layer service modules.

Step 601: the UE sends an uplink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 601, step 201 in fig. 2 may be executed, or step 201 may not be executed. The processing of step 201 is not described in detail here.

In step 601, the UE supports the V2X capability, obtains its own location and the traffic conditions of the road through the sensor, and sends these information to the base station 1 through the uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode.

Step 602: the V2X application layer service module sends a downlink V2X message to base station 1.

Step 603: base station 1 configures downlink radio resources and then sends a downlink V2X message to users within range of the base station.

Typically, the base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single cell broadcasting mode, a broadcasting mode through a broadcasting channel, or other broadcasting modes. Alternatively, the base station 1 may also send the V2X message to the user in a unicast manner. 603, the steps include different procedures depending on the method of sending the downstream V2X message. If the MBSFN mode or the single cell broadcast mode is used, step 603 includes that the base station 1 sends the MBSFN radio resource configuration information to the UE, and then sends data on the resource. If the downlink V2X message is broadcast via the broadcast channel, the step of 603 includes the base station 1 directly sending the downlink V2X message to the UE via a newly defined broadcast message. If via other broadcast or unicast, 603 includes configuring the radio resource used by broadcast or unicast, and then sending the downstream V2X message on the resource.

Step 604: the V2X application layer service module forwards downstream V2X messages to the V2X application layer service module connected to base station 2.

The base station 1 and the base station 2 have an overlapped coverage area or an adjacent area, the base station 1 belongs to an operator 1, the base station 2 belongs to an operator 2, the base station 1 receives an uplink V2X message of a user, the base station 1 forwards the message to a V2X application layer service module, the V2X application layer service module generates a downlink V2X message, according to the information configured in step 201, the V2X application layer service module connected with the base station 1 knows that the message needs to be sent to UEs under the base station 1 and the base station 2, and the V2X application layer service module connected with the base station 1 forwards a downlink V2X message to the V2X application layer service module connected with the base station 2. Assuming that each base station has a local V2X application function, the downlink V2X message can be directly sent to the application layer of base station 2 through the application layer of base station 1.

In the above processing, how the V2X application layer service module knows the UE that needs to send the downlink V2X message to the base station 1 and the base station 2 according to the information configured in step 201, which is not limited in the present application. For example, the V2X application layer service module may obtain the information configured in step 201 from the base station 1, so as to know the corresponding information.

Step 605: the V2X application layer service module connected to base station 2 sends a downlink V2X message to base station 2.

Step 606: the base station 2 configures downlink radio resources for the downlink V2X message, and then sends a downlink V2X message to users within range of the base station.

Similarly, the step 606 includes different procedures depending on the method of sending the downstream V2X message. Reference may be made specifically to the method of step 603.

Thus, the third example ends.

Fig. 7 is a fourth embodiment of the present application. Fig. 7 illustrates the processing of V2X application layer service module interactive V2X messages belonging to different operators, by which users of different operators can receive downlink V2X messages, reducing traffic accidents, and improving traffic efficiency. The information interaction may be sent to the MBMS-GW of operator 2 via the BMSC of operator 1, or to the MCE of operator 2 via the MBMS-GW of operator 1.

Step 701: the UE sends an uplink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 701, step 201 in fig. 2 may be executed, or step 201 may not be executed. The processing of step 201 is not described in detail here.

In step 701, the UE supports the V2X capability, obtains its own location and the traffic conditions of the road through the sensor, and sends these information to the base station 1 through the uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode.

Step 702: the V2X application layer service module sends a downlink V2X message to the BMSC of the operator where the base station 1 is located.

Step 703: the BMSC sends a service start message carrying a downlink V2X message to the MBMS-GW, and the MBMS-GW sends the service start message to the MCE through the MME. The message is sent along the same path as the current traffic start message.

Step 704: the MCE of the operator where the base station 1 is located sends the service start response message to the BMSC through the MME and the MBMS-GW.

Step 704 is a procedure for transmitting an MBMS service start response message. Namely MCE sends a service start response message MME, MME sends a service start response message to MBMS-GW, and MBMS-GW sends a service start response message to BMSC. The path of the response message is the same as the path of the current traffic start response.

Step 705: the MCE of the operator where the base station 1 is located sends the service start message carrying the downlink V2X message to the base station 1.

Step 706: the base station 1 transmits a service initiation response message to the MCE.

Step 707: base station 1 sends a downlink V2X message to the UE.

Typically, the base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single cell broadcasting mode, a broadcasting mode through a broadcasting channel, or other broadcasting modes. Alternatively, the base station 1 may also send the downlink V2X message to the UE in a unicast manner. The step 707 includes different procedures according to the method of sending the downstream V2X message. If the MBSFN mode or the single-cell broadcast mode is adopted, step 707 includes that the base station 1 sends the MBSFN radio resource configuration information to the UE, and then sends data on the resource. If the downlink V2X message is broadcast over the broadcast channel, step 707 includes the base station 1 directly sending the downlink V2X message to the UE over a newly defined broadcast message. If the other broadcast or unicast mode is used, the step 707 includes configuring the radio resource used by broadcast or unicast, and then sending the downstream V2X message on the resource.

Step 708: the BMSC sends a service start message carrying the downlink V2X message to the MBMS-GW of operator 2.

The base station 1 and the base station 2 have an overlapping coverage area or are adjacent base stations, the base station 1 belongs to an operator 1, the base station 2 belongs to an operator 2, a BMSC of the operator 1 is connected with an MBMS-GW of the operator in advance, and the BMSC of the operator 1 sends a service start message carrying a downlink V2X message to the MBMS-GW of the operator 2. The MBMS-GW of operator 2 sends a service start to the corresponding MME, and then the MME forwards a service start message to the MCE, and the subsequent process is similar to that of the current EMBMS.

Or step 708: the MME of operator 1 sends a service start message carrying the downlink V2X message to the MCE of operator 2.

The base station 1 and the base station 2 have an overlapping coverage area or are adjacent base stations, the base station 1 belongs to an operator 1, the base station 2 belongs to an operator 2, and the operator 2 configures an M3 interface which needs to be established with a certain MME of the operator 1 by the MCE. Before step 708, the MCE has established an M3 interface with the MME of operator 1. The MME receives the service start request, knows that the service is for transmitting the downlink V2X message, and sends the service start to the MCE of operator 1 or the MCE of operator 2.

Step 709: the MCE of operator 2 sends a service start response message to the BMSC through the MME and MBMS-GW of operator 1.

Step 709 is a procedure of transmitting the MBMS service start response message. Namely MCE sends a service start response message MME, MME sends a service start response message to MBMS-GW, and MBMS-GW sends a service start response message to BMSC. The path of the response message is the same as the path of the current traffic start response.

Step 710: the MCE of the operator 2 sends a service start message carrying the downlink V2X message to the base station 2.

Step 711: the base station 2 sends a service initiation response message to the MCE of the operator 2.

Step 712: base station 2 sends a downlink V2X message to the UE.

Similarly, the step 712 includes different procedures depending on the method of sending the downstream V2X message. Reference may be made specifically to the method of step 707.

Thus, the fourth embodiment is completed.

Fig. 8 shows a fifth embodiment of the present invention. Fig. 8 illustrates the processing of the base station interactive V2X messages belonging to different operators, by which users of different operators can receive downlink V2X messages, reducing traffic accidents, and improving traffic efficiency. The information interaction may be sent to the MBMS-GW, MCE of operator 1 via the BMSC of operator 1, and then the MCE of operator 1 is sent to the base station of operator 2.

Step 801: the UE sends an uplink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 801, step 201 in fig. 2 may be executed, or may not be executed. The processing of step 201 is not described in detail here.

In step 801, the UE supports the V2X capability, obtains its own location and road traffic conditions through a sensor, and sends these information to the base station 1 through an uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode.

Step 802: the V2X application layer service module sends a downlink V2X message to the BMSC of the operator where the base station 1 is located.

Step 803: the BMSC of the operator where the base station 1 is located sends a service start message carrying a downlink V2X message to the MBMS-GW, and the MBMS-GW sends the service start message to the MCE through the MME. The message is sent along the same path as the current traffic start message.

Step 804: the MCE of the operator where the base station 1 is located sends the service start response message to the BMSC through the MME and the MBMS-GW.

Step 804 is a transmission procedure of the MBMS service start response message. Namely MCE sends a service start response message MME, MME sends a service start response message to MBMS-GW, and MBMS-GW sends a service start response message to BMSC. The path of the response message is the same as the path of the current traffic start response.

Step 805: the MCE of the operator where the base station 1 is located sends a service start message carrying the downlink V2X message to the base station 1.

Step 806: the base station 1 transmits a service initiation response message to the MCE.

Step 807: base station 1 sends a downlink V2X message to the UE.

Typically, the base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single cell broadcasting mode, a broadcasting mode through a broadcasting channel, or other broadcasting modes. Alternatively, the base station 1 may also send the downlink V2X message to the UE in a unicast manner. The step 807 includes different procedures depending on the method of sending the downstream V2X message. If the MBSFN mode or the single cell broadcast mode is used, step 807 includes that the base station 1 transmits the MBSFN radio resource configuration information to the UE, and then transmits data on the resource. If the downlink V2X message is broadcast over the broadcast channel, the step of 807 includes the base station 1 directly transmitting the downlink V2X message to the UE over a newly defined broadcast message. If the other broadcast or unicast mode is used, the step 707 includes configuring the radio resource used by broadcast or unicast, and then sending the downstream V2X message on the resource.

Step 808: the MCE of the operator where the base station 1 is located sends a service start message carrying the downlink V2X message to the base station 2.

The base station 1 and the base station 2 have an overlapping coverage area or an adjacent area, the base station 1 belongs to the operator 1, the base station 2 belongs to the operator 2, and the MCE of the operator 1 and the base station of the operator 2 are connected in advance. Base station 2 has established an M2 interface with the MCE. The MCE has established an M2 interface with the base station of operator 1. The MCE receives the service start request, knows that the service is for transmitting the downlink V2X message, and sends the service start to the base station of operator 1 or the base station of operator 2.

Step 809: the base station 2 transmits a service initiation response message to the MCE.

Step 810: base station 2 sends a downlink V2X message to the UE.

Similarly, the step 810 includes different procedures depending on the method of sending the downstream V2X message. Reference may be made specifically to the method of step 807.

So far, example five ends.

Fig. 8 may also describe another method of implementation, embodiment six. A dedicated set of broadcast systems is deployed for V2X. For example, the functions of BMSC, MBMS-GW, MCE, etc. are deployed on one physical entity or multiple physical entities, and this function is dedicated to transmitting downlink V2X messages. All base stations in a certain area, no matter which operator they belong to, need to establish an M2 interface with the MCE. Fig. 8 is used to describe embodiment six, including the following steps:

step 801: the UE sends an uplink and downlink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 801, step 201 in fig. 2 may be executed, or step 201 may not be executed. The processing of step 201 is not described in detail here.

Step 802: the V2X application layer service module sends downstream V2X messages to the BMSCs in the area. The BMSC may be a separate entity or implemented with other physical entities.

Step 803: the BMSC of the operator where the base station 1 is located sends a service start message carrying the downlink V2X message to the MCE. If the current transmission path is adopted, the BMSC sends a service start message to the MBMS-GW, and the MBMS-GW sends the service start message to the MCE through the MME. The message is sent along the same path as the current traffic start message. For simplicity, the MBMS-GW may send the service start message directly to the MCE, or the BMSC may send the service start message to the MCE.

Step 805: the MCE of the operator of the base station 1 sends the service start message carrying the V2X message to the base station 1. The MCE decides to adopt the MBSFN mode, and the MCE sends a service start request message to all base stations within the range, including the base station 1 and the base station 2. Or the MCE determines to adopt a single-cell broadcast mode, and the MCE determines in which cells to broadcast, the MCE sends a service start request message to the corresponding base station, the service start request message includes the identifiers of a group of cells, and the MCE sends the service start to the base station corresponding to the cell identifier according to the cell identifier.

Step 807: base station 1 sends a downlink V2X message to the UE.

The base station 1 and the base station 2 have an overlapping coverage area or an adjacent area, the base station 1 belongs to the operator 1, the base station 2 belongs to the operator 2, and the MCE of the operator 1 and the base station of the operator 2 are connected in advance. Base station 2 has established an M2 interface with the MCE. The MCE has established an M2 interface with the base station of operator 1. The MCE receives the service start request, knows that the service is for transmitting the downlink V2X message, and sends the service start to the base station of operator 1 or the base station of operator 2. Or the service start request message contains the identifications of a group of cells, and the MCE sends the service start to the base station corresponding to the cell identification according to the cell identification.

Step 810: base station 2 sends a downlink V2X message to the UE.

Thus, example six ends.

Fig. 9 is a seventh embodiment of the present invention.

Fig. 9 illustrates the processing of the wireless configuration information of the base station interactive V2X belonging to different operators, by which users of different operators can receive downlink V2X messages, reducing traffic accidents, and improving traffic efficiency. The information exchange can be through an X2 interface between base stations.

Step 901: the UE sends an uplink and downlink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 901, step 201 in fig. 2 may be executed, or step 201 may not be executed. The processing of step 201 is not described in detail here.

In step 901, the UE supports the V2X capability, obtains its own location and the traffic conditions of the road through the sensor, and sends these information to the base station 1 through the uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode.

Step 902: the V2X application layer service module sends a downlink V2X message to base station 1.

Step 903: base station 1 configures downlink radio resources and then sends a downlink V2X message to users within range of the base station.

Typically, the base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single cell broadcasting mode, a broadcasting mode through a broadcasting channel, or other broadcasting modes. Alternatively, the base station 1 may also send the downlink V2X message to the user in a unicast manner. The step 903 is different according to the method for sending the downstream V2X message, and comprises different processes. If the MBSFN mode or the single cell broadcast mode is used, 903 step includes that the base station 1 sends the MBSFN radio resource configuration information to the UE, and then sends data on the resource. If the downlink V2X message is broadcast over the broadcast channel, the step 903 involves the base station 1 directly sending the downlink V2X message to the UE over a newly defined broadcast message. If the other broadcast or unicast mode is used, the step 903 includes configuring the radio resource used by broadcast or unicast, and then sending the downlink V2X message on the resource.

Step 904: base station 1 transmits the radio configuration information of V2X, base station 2. The base station 2 and the base station 1 belong to different operators, e.g. the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.

The base station 1 and the base station 2 have an overlapped coverage area or an adjacent area, the base station 1 belongs to an operator 1, the base station 2 belongs to an operator 2, the base station 1 receives an uplink V2X message of a user, the base station 1 forwards the message to a V2X application layer service module, the V2X application layer service module generates a downlink V2X message, and the downlink V2X message is sent to the base station 1. Based on the information configured in step 201, the base station 1 knows that there is base station 2 of operator 2 under the coverage area, and the base station 1 needs to notify the user under the base station 2 of the wireless configuration information of V2X. The X2 interface is established between the base station 1 and the base station 2, and the base station 1 sends the wireless configuration information of V2X to the base station 2. The message may be sent over the control plane of X2 or over the user plane.

Step 905: the base station 2 configures and transmits the radio configuration information of V2X to the users in the coverage area of the base station 2.

The base station 2 receives the radio resource configuration information which is transmitted by the base station 1 and allocated by the base station 1 for the downlink V2X message, and the base station 2 transmits the radio resource configuration information of V2X to the UE in a broadcast or unicast mode. The radio resource configuration information is a radio resource configured by the base station 1 of the operator 1. After receiving the configuration, the UE below the base station 2 may listen to the downlink V2X message broadcast by the base station 1 at the corresponding time and resource, for example, if the base station 1 and the base station 2 use the same frequency, the UE listens to the downlink V2X message broadcast by the base station 1 at the corresponding time and resource in a TDD manner, if the base station 1 and the base station 2 use different frequencies, the UE has no capability of receiving two frequencies simultaneously, and the UE switches to the frequency of the base station 1 to listen to the downlink V2X message at the time of V2X broadcast. If the UE has the ability to receive both frequencies simultaneously, the UE turns on the frequency of base station 1 to listen to the downlink V2X message at the time of the V2X broadcast.

So far, example seven ends.

Fig. 10 shows an eighth embodiment of the present invention. Fig. 10 illustrates the processing of the wireless configuration information of the base station interactive V2X belonging to different operators, by which users of different operators can receive downlink V2X messages, reducing traffic accidents, and improving traffic efficiency. The information interaction may be through an S1 interface between base stations.

Step 1001: the UE sends an uplink V2X message to base station 1. The base station 1 belongs to an operator 1.

Before step 1001, step 201 in fig. 2 may be executed, or step 201 may not be executed. The processing of step 201 is not described in detail here.

In step 1001, the UE supports the V2X capability, obtains its own location and road traffic conditions through a sensor, and sends these information to the base station 1 through an uplink V2X message. The base station 1 receives the uplink V2X message and sends the message to the V2X application layer service module. The V2X application layer service module is connected to the base station 1, and may be implemented on the base station 1 or may be a separate entity. The base station 1 forwards the uplink V2X message to the V2X application layer service module, the V2X application layer service module processes the uplink V2X message and generates a downlink V2X message, and the downlink V2X message is used to notify the traffic condition of the road to other users, so the downlink V2X message generally adopts a broadcast mode.

Step 1002: the V2X application layer service module sends a downlink V2X message to base station 1.

Step 1003: the base station 1 configures downlink wireless resources, and then sends a downlink V2X message to users within the coverage of the base station 1.

Typically, the base station 1 broadcasts a downlink V2X message to users within range of the base station. The broadcasting mode can be an MBSFN mode, a single cell broadcasting mode, a broadcasting mode through a broadcasting channel, or other broadcasting modes. Alternatively, the base station 1 may also send the V2X message to the user in a unicast manner. The step 1003 includes different procedures according to the method of sending the downstream V2X message. If the MBSFN mode or the single cell broadcast mode is used, the step 1003 includes that the base station 1 transmits the MBSFN radio resource configuration information to the UE, and then transmits data on the resource. If the downlink V2X message is broadcast via the broadcast channel, the step of 1003 includes the base station 1 directly transmitting the downlink V2X message to the UE via a newly defined broadcast message. If the other broadcast or unicast mode is used, the step 1003 includes configuring the radio resource used by broadcast or unicast, and then sending the downstream V2X message on the resource.

Step 1004: base station 1 transmits the radio configuration information of V2X to base station 2. The base station 2 and the base station 1 belong to different operators, e.g. the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.

The base station 1 and the base station 2 have an overlapping coverage area or an adjacent area, the base station 1 belongs to an operator 1, the base station 2 belongs to an operator 2, the base station 1 receives a downlink V2X message of a user, the base station 1 forwards the message to a V2X application layer service module, the V2X application layer service module generates a downlink V2X message, and the downlink V2X message is sent to the base station 1. Based on the configuration information, the base station 1 knows that there is base station 2 of operator 2 under the coverage area, and the base station 1 needs to notify the user under the base station 2 of the radio configuration information of V2X. There is no X2 interface between the base station 1 and the base station 2, and the base station 1 sends the wireless configuration information of V2X to the base station 2 through the S1 interface. The base station 1 sends an eNB configuration transmission message to the core network, the message carries information of a target base station and wireless configuration information of V2X, and the core network sends an MME configuration transmission message to the base station 2, the message carries the wireless configuration information of V2X. The transport between core networks may include two MME nodes, the MME1 connected to base station 1 finds the MME2 connected to base station 2 by the destination address in the message, and then the MME1 sends the message to base station 2 through the MME 2.

Step 1005: the base station 2 transmits the radio configuration information of V2X to the users in the coverage area of the base station 2.

So far, example eight ends.

The foregoing is a specific implementation of the V2X message transmission method in this application. The application also provides three devices for transmitting the V2X message, which can be respectively used for implementing two specific implementation manners of the first method and the second method.

Corresponding to the first implementation manner in the first method, the apparatus for transmitting the V2X message includes: the device comprises an uplink message receiving unit, a User Equipment (UE) sending unit and a base station sending unit.

The uplink message receiving unit is configured to receive an uplink V2X message sent by the user equipment UE; a UE sending unit, configured to send a downlink V2X message generated according to the uplink V2X message to the UE within the coverage of the base station; a base station sending unit, configured to send the downlink V2X message or the radio resource configuration information allocated by the base station for the downlink V2X message to a second base station in an operator other than the operator where the base station is located, where the second base station is configured to send the downlink V2X message or the radio resource configuration information to the UE in the coverage area of the second base station; wherein the radio resource configuration information is used for the UE in the coverage area of the second base station to receive the downlink V2X message on the resource indicated by the information.

Corresponding to the second implementation manner in the first method, the apparatus for transmitting the V2X message includes: the device comprises an uplink message receiving unit, a User Equipment (UE) sending unit and a base station sending unit.

The uplink message receiving unit is configured to receive, through a base station connected to the uplink message receiving unit, an uplink V2X message sent by the user equipment UE within the coverage area of the base station. And the UE sending unit is used for sending the downlink V2X message generated according to the uplink V2X message to the UE within the coverage range of the base station through the base station connected with the UE. And the base station sending unit is used for sending the downlink V2X message to a second base station under other operators, and the second base station is used for sending the downlink V2X message to the UE in the coverage area of the second base station.

Corresponding to the second method, the transmission device for transmitting the V2X message includes: a configuration information exchange unit and a V2X configuration information sending unit.

The configuration information interaction unit is used for interacting configuration information with base stations of other operators except the operator where the base station is located, wherein the configuration information comprises the capability of whether the base station supports V2X and frequency information of V2X message transmission of the base station. A V2X configuration information sending unit, configured to send the V2X configuration information to the UE in its coverage area according to the interactive configuration information, where the V2X configuration information includes frequency information of V2X message transmitted by the base station of another operator, and is used for the UE to receive the downlink V2X message of the base station of another operator on the frequency.

There is also a problem to be solved in order to support the transmission of V2X traffic between base stations of different operators. The V2X related message may be carried and transmitted by way of MBMS, however, in the current MBMS message, it is TMGI that is used to identify MBMS service identifier, and TMGI is composed of operator identifier PLMN ID plus an operator-wide unique identifier. It can be seen that if the same downlink V2X message is broadcast under different operators, the TMGIs used by different operators are different according to the current definition of the TMGI, and confusion may occur for the UE to receive. To solve the above problem, it is necessary to study how to configure the TMGI between different operators.

Three methods are provided in the present application.

The method comprises the following steps:

in the method, the base station 1 and the base station 2 belong to different operators respectively, and the downlink V2X message needs to be sent to the UEs within the coverage of the base station 1 and the base station 2. Wherein, the base station 2 does not directly send the downlink V2X message to the UEs in its coverage, but the UEs in the coverage of the base station 2 receive the downlink V2X message on the resources allocated by the base station 1 for the downlink V2X message. Based on the above scenario, the following method is adopted to perform TMGI setting, so as to ensure that the UE within the coverage area of the base station 2 normally performs downlink V2X message reception.

The method comprises the following steps: base station 1 and base station 2 coordinate between the operators in which they are located, creating a mapping table between TMGIs.

The base station sends to and stores in the UE a mapping table, which may contain the identity of the V2X service, TMGI-1, TMGI-2. The identifier of the V2X service is optional, TMGI1 is a service identifier used by the operator 1 where the base station is located, TMGI2 is a service identifier used by the operator 2 where the base station 2 is located, and the downlink V2X messages corresponding to the two identifiers are the same message.

Step two: base station 1 broadcasts a downlink V2X message over the eMBMS bearer, which is identified by TMGI 1.

Step three: base station 1 sends configuration information of V2X to base station 2.

The configuration information of V2X may include TMGI1 used at base station 1, radio resource configuration used at base station 1 by V2X, and service identifier of V2X. Among them, the radio resource configuration (e.g. the radio resource configuration information in the foregoing embodiments seven and eight) used by the TMGI1, V2X on the base station 1 and the service identity of V2X are optional. The configuration information of the specific V2X may be transmitted in various feasible manners, which are not limited herein, for example, the configuration information of the radio resource may be transmitted in the manners of the seventh and eighth embodiments described above.

The base station 2 has two processing modes for the received configuration information of V2X: firstly, when the configuration information of V2X does not include the service identifier of V2X, the TMGI1 needs to be included, and the base station 2 needs to store the mapping table, so that the TMGI1 can be replaced by the TMGI2 according to the mapping table, and then the TMGI is sent to the UE. Secondly, when the configuration information of V2X includes the service identifier of V2X, the configuration information of V2X may not include TMGI1, and the base station 2 may not store the mapping table, and directly sends the configuration information of V2X to the UE.

Corresponding to the first processing mode of the base station 2, the configuration information of the V2X does not include the service identifier of the V2X, the UE receives the TMGI2, and the UE knows that the TMGI2 is the V2X service that the UE needs to receive, according to the stored mapping relationship, the UE can know that the base station 1 is broadcasting on the eMBMS channel identified by the TMGI1, and the UE can listen to the data on the eMBMS bearer identified by the TMGI1 by using the TDD mode to the base station 1, so as to receive the downlink V2X message sent on the eMBMS bearer. If the configuration information of V2X includes the radio resource configuration information of base station 1, the UE can directly receive the radio resource configuration information on the resource indicated by the configuration information, and the processing is simple; if the configuration information of the V2X does not include the radio resource configuration information under the base station 1, the UE receives the control message and the user data of the eMBMS sent by the base station 1 to obtain the downlink V2X message on the eMBMS bearer identified by the TMGI 1.

Corresponding to the second processing mode of the base station 2, the configuration information of the V2X includes the service identifier of the V2X, the UE receives the service identifier of the V2X, according to the mapping relationship between the service identifier of the V2X and the TMGI1 in the stored mapping relationship, the UE can know that the base station 1 is broadcasting on the eMBMS channel identified by the TMGI1, and the UE can listen to the data on the eMBMS bearer identified by the TMGI1 by using the TDD mode to the base station 1, so as to receive the downlink V2X message sent on the eMBMS bearer. If the configuration information of V2X includes the radio resource configuration information of base station 1, the UE can directly receive the radio resource configuration information on the resource indicated by the configuration information, and the processing is simple; if the configuration information of the V2X does not include the radio resource configuration information under the base station 1, the UE receives the control message and the user data of the eMBMS sent by the base station 1 to obtain the downlink V2X message on the eMBMS bearer identified by the TMGI 1.

The above scheme is described from the coordination perspective among a plurality of nodes, and the processing for the UE includes:

step one, UE in the coverage of a base station 2 receives configuration information of V2X sent by the base station 1 through the base station 2;

the configuration information of V2X may include service identifiers of TMGI1 and/or V2X that the base station 1 identifies the eMBMS bearer; when the configuration information of V2X does not include the service identifier of V2X, the base station 2 needs to store a mapping table, and the TMGI1 is replaced with the TMGI2 used by the base station 2 according to the mapping table when being forwarded in the base station 2;

when the configuration information of V2X includes the service identifier of V2X, the base station 2 may directly forward the configuration information of V2X to the UE without storing a mapping table.

And step two, the UE determines that the base station 1 broadcasts a downlink V2X message on the eMBMS bearer identified by the TMGI1 according to the received configuration information of the V2X and a local mapping table, and receives a downlink V2X message transmitted on the eMBMS bearer.

The mapping table includes a mapping relationship between the configuration information of V2X and the TMGI.

The second method comprises the following steps:

similar to the first method, the base station 1 and the base station 2 belong to different operators, and the downlink V2X message needs to be sent to the UEs in the coverage area of the base station 1 and the base station 2. In this method, the base station 2 also needs to send a downlink V2X message. Based on the above scenario, the following method is adopted to perform TMGI setting, so as to ensure that the UE within the coverage area of the base station 2 normally performs downlink V2X message reception.

The mapping table is sent to the setting nodes of the operator 1 in which the base station 1 is located and the operator 2 in which the base station 2 is located. The setting node may be a node of an access network, or a node of a core network, for example, to

base stations

1 and 2, or to a BMSC, MBMS-GW, MCE in an eMBMS architecture. The mapping table may contain the identification of the V2X service, TMGI-1, TMGI-2. The identifier of the V2X service is optional, TMGI-1 is a service identifier used by operator 1, TMGI-2 is a service identifier used by operator 2, and the downlink V2X messages corresponding to the two identifiers are the same message.

Step three: the base station 1 sends the downlink V2X message to the base station 2, and the node receiving the mapping table performs TMGI conversion when forwarding the downlink V2X message.

The method for the base station 1 to send the downlink V2X message to the base station 2 may adopt various feasible manners, such as the transmission manner of the downlink V2X message given in the above embodiment. During the transmission of the downlink V2X message, when the node receiving the mapping table forwards the downlink V2X message, it converts the bearer identifier TMGI of the eMBMS that carries the message, specifically, according to the stored mapping table, replaces TMGI1 with TMGI 2. For example, by adopting the step 708 in the embodiment 7, the MBMS-GW of the operator 2 receives the service start message sent by the BMSC belonging to the operator 1, and the MBMS-GW replaces the TMGI1 with the TMGI2, and then continues to send to the following nodes. If the method of embodiment 8 is adopted, the base station 2 of the operator 2 receives the service start message sent by the MCE belonging to the operator 1, and the base station 2 replaces the TMGI1 with the TMGI2 and then continues to send to the following nodes.

In this way, a downlink V2X message may be sent to base station 2 whose eMBMS bearer identity has also been replaced with TMGI 2. The base station 2 may allocate radio resources for the downlink V2X message and identify the corresponding eMBMS bearer with TMGI 2. Since the TMGI is already the TMGI2 supported by the base station 2, UEs within the coverage of the base station 2 can successfully receive the downlink V2X message.

The second method is described from the coordination angle among a plurality of nodes, and for the set node for performing TMGI conversion, the processing includes:

step one, a setting node X of an operator where a base station 1 or a base station 2 is located receives a downlink V2X message transmitted from the base station 1 to the base station 2;

wherein, the node X is set as an eMBMS forwarding node in the transmission of the V2X message from the operator of the base station 1 to the base station 2. Base station 1 broadcasts a downlink V2X message over the eMBMS bearer.

And step two, the setting node X replaces the TMGI1 carried by the eMBMS identified by the base station 1 with the TMGI2 used by the base station 2 according to the local mapping table, so that the UE in the coverage of the base station 2 receives the downlink V2X message broadcast by the base station 2.

The mapping table includes a mapping relationship between TMGIs of the operator 1 and the operator 2, and the setting node X may be an eMBMS forwarding node of the operator 1 or a forwarding node of the operator 2. After receiving the downlink V2X message to be forwarded, the eMBMS forwarding node X replaces the TMGI loaded by the eMBMS of the operator 1 with the TMGI2 used by the base station 2 according to the mapping table;

step three, the setting node X sends the converted downlink V2X message to the subsequent node.

The third method comprises the following steps:

V2X is assigned a dedicated TMGI that does not contain the operator's identity. All operators use the same dedicated TMGI for the same V2X service. In this way, the UE can identify the corresponding downstream V2X message through the bearer identity of the eMBMS.

For a base station broadcasting a downlink V2X message, the processing includes:

step one, a base station receives an uplink V2X message reported by UE;

step two, the base station broadcasts a downlink V2X message generated according to the uplink V2X message; the downlink V2X message is broadcast through an eMBMS bearer identified by a dedicated TMGI, the dedicated TMGI is a TMGI that is pre-assigned for V2X and does not include an operator identifier, and all operators use the same dedicated TMGI for the same V2X service.

Corresponding to the three related methods for setting the TMGI, the application provides corresponding devices.

Corresponding to the first method, the device for receiving the V2X message provided by the present application includes: a configuration information receiving unit and a V2X receiving unit.

The configuration information receiving unit is used for receiving the configuration information of the V2X sent by the first base station through the second base station; the first base station is a base station for bearing and broadcasting a downlink V2X message through an enhanced multimedia broadcast multicast service (eMBMS), and the second base station is different from an operator where the first base station is located;

a V2X receiving unit, configured to determine, according to the received configuration information of V2X and a local mapping table, that the first base station broadcasts a downlink V2X message on an eMBMS bearer identified by a TMGI used by an operator where the first base station is located, and receive a downlink V2X message transmitted on the eMBMS bearer; the mapping table includes a mapping relationship between the configuration information of V2X and the TMGI.

Corresponding to the processing method of the setting node in the second method, the present application provides an apparatus for transmitting a V2X message, where the apparatus is located at the setting node, and specifically includes: a V2X receiving unit, a TMGI converting unit and a V2X transmitting unit.

The V2X receiving unit is configured to receive a downlink V2X message transmitted from a first base station to a second base station; the first base station is a base station for broadcasting a downlink V2X message through an eMBMS bearer, and the operators of the first base station and the second base station are different;

the TMGI conversion unit is used for replacing the TMGI1 borne by the first base station identity eMBMS with the TMGI2 used by the second base station according to a local mapping table, and is used for receiving the downlink V2X message broadcast by the second base station by the UE within the coverage range of the second base station; the mapping table comprises a mapping relation between TMGI of two operators where the first base station and the second base station are located;

and a V2X sending unit, configured to send the downlink V2X message after replacing the TMGI.

Corresponding to the processing mode of the base station in the third method, the application provides a transmission device of a V2X message, which includes: a receiving unit and a broadcasting unit.

The receiving unit is used for receiving an uplink V2X message reported by the UE;

a broadcasting unit for broadcasting a downstream V2X message generated according to the upstream V2X message; the downstream V2X message is broadcast over an eMBMS bearer identified by a dedicated TMGI, which is a TMGI pre-assigned for V2X that does not include an operator identification, and all operators use the same dedicated TMGI for the same V2X service.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A method of transmitting a vehicle-to-any device communication V2X message, comprising:

the first base station sends the radio resource configuration information allocated by the first base station for the downlink V2X message to a second base station under an operator other than the operator where the first base station is located, so that the second base station sends the radio resource configuration information to the UE in the coverage area of the second base station; wherein the radio resource configuration information is used for the UE in the coverage area of the second base station to receive the downlink V2X message on the resource indicated by the information.

2. The method of claim 1, wherein the first base station sends the downlink V2X message to UEs in its coverage area in a broadcast manner or a unicast manner.

3. The method of claim 1, wherein the radio resource configuration information is transmitted through an X2 interface or an S1 interface between base stations when being transmitted to the second base station.

4. The method of claim 3, wherein the sending the radio resource configuration information through an X2 interface between base stations comprises: the radio resource configuration information is transmitted through a control plane or a user plane of X2.

5. The method of claim 3, wherein the sending the radio resource configuration information through an S1 interface between base stations comprises: the first base station sends an eNB configuration transmission message to a core network, the eNB configuration transmission message comprises information of the second base station and the radio resource configuration information, and the core network carries the radio resource configuration information in a Mobile Management Entity (MME) configuration transmission message according to the received eNB configuration transmission message and sends the radio resource configuration information to the second base station.

6. The method of claim 1, wherein the second base station sends the radio resource configuration information to the UEs in the coverage area of the second base station in a broadcast or unicast manner after receiving the radio resource configuration information.

7. A method of transmitting a vehicle-to-any device communication V2X message, comprising:

8. The method of claim 7, wherein the V2X information exchanged between different base stations is transmitted through an X2 interface or an S1 interface between base stations.

9. The method of claim 7, wherein the V2X configuration information further includes frequency information of V2X messages transmitted by the first base station.

10. A method of receiving a vehicle-to-any device communication V2X message, comprising:

11. The method of claim 10, wherein the mapping table comprises a mapping relationship between TMGIs of two different operators where the second base station and the first base station are located, wherein the mapping table is stored in the second base station, and wherein the configuration information of V2X comprises TMGIs 1 that the first base station identifies the eMBMS bearer; the TMGI1 is replaced with the TMGI2 used by the second base station according to the mapping table when forwarding in the second base station.

12. The method according to claim 10, wherein the mapping table includes a mapping relationship between a TMGI of an operator where the first base station is located and a service identifier of V2X, and the configuration information of V2X includes a service identifier of V2X;

13. A method of transmitting a vehicle-to-any device communication V2X message, comprising:

and the set node sends out the downlink V2X message after replacing the TMGI.

14. An apparatus for transmitting a vehicle-to-any device communication V2X message, the apparatus comprising: an uplink message receiving unit, a User Equipment (UE) sending unit and a base station sending unit;

the base station sending unit is configured to send the radio resource configuration information allocated by the base station for the downlink V2X message to a second base station under an operator other than the operator where the base station is located, and configured to send the radio resource configuration information to the UE in the coverage area of the second base station; wherein the radio resource configuration information is used for the UE in the coverage area of the second base station to receive the downlink V2X message on the resource indicated by the information.

15. An apparatus for transmitting a V2X message, the apparatus comprising: a configuration information interaction unit and a V2X configuration information sending unit;

16. An apparatus for receiving a vehicle-to-any device communication V2X message, comprising: a configuration information receiving unit and a V2X receiving unit;

17. An apparatus for transporting vehicle-to-any device communication V2X messages, the apparatus located at an enhanced multimedia broadcast multicast service eMBMS forwarding node where a first base station transmits a V2X message to a second base station, the apparatus comprising: a V2X receiving unit, a Terminal Mobile Group Identification (TMGI) converting unit and a V2X transmitting unit;