WO2017122976A1 - Method and apparatus for transmitting v2x message - Google Patents

Method and apparatus for transmitting v2x message Download PDF

Info

Publication number: WO2017122976A1
Authority: WO; WIPO (PCT)
Prior art keywords: base station; message; downlink; configuration information; operator
Prior art date: 2016-01-13

Application number

PCT/KR2017/000275

Other languages

English (en)

French (fr)

Inventor

Hong Wang

Lixiang Xu

Xiaowan KE

Original Assignee

Samsung Electronics Co., Ltd.

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2016-01-13

Filing date

2017-01-09

Publication date

2017-07-20

2017-01-09 Application filed by Samsung Electronics Co., Ltd. filed Critical Samsung Electronics Co., Ltd.

2017-07-20 Publication of WO2017122976A1 publication Critical patent/WO2017122976A1/en

Links

Images

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/27—Control channels or signalling for resource management between access points
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]

Definitions

the present disclosure relates to wireless communications technologies, more particularly to a method and an apparatus for transmitting a V2X message.
the 5G or pre-5G communication system is also called a 'Beyond 4G Network' or a 'Post LTE System'.
the 5G communication system is considered to be implemented in higher frequency (mmWave) bands, e.g., 60GHz bands, so as to accomplish higher data rates.
mmWave e.g., 60GHz bands
MIMO massive multiple-input multiple-output
FD-MIMO Full Dimensional MIMO
array antenna an analog beam forming, large scale antenna techniques are discussed in 5G communication systems.
RANs Cloud Radio Access Networks
D2D device-to-device
CoMP Coordinated Multi-Points
FQAM Hybrid FSK and QAM Modulation
SWSC sliding window superposition coding
ACM advanced coding modulation
FBMC filter bank multi carrier
NOMA non-orthogonal multiple access
SCMA sparse code multiple access
the Internet which is a human centered connectivity network where humans generate and consume information
IoT Internet of Things
IoE Internet of Everything
sensing technology “wired/wireless communication and network infrastructure”, “service interface technology”, and “Security technology”
M2M Machine-to-Machine
MTC Machine Type Communication
IoT Internet technology services
IoT may be applied to a variety of fields including smart home, smart building, smart city, smart car or connected cars, smart grid, health care, smart appliances and advanced medical services through convergence and combination between existing Information Technology (IT) and various industrial applications.
IT Information Technology
5G communication systems to IoT networks.
technologies such as a sensor network, Machine Type Communication (MTC), and Machine-to-Machine (M2M) communication may be implemented by beamforming, MIMO, and array antennas.
MTC Machine Type Communication
M2M Machine-to-Machine
Application of a cloud Radio Access Network (RAN) as the above-described Big Data processing technology may also be considered to be as an example of convergence between the 5G technology and the IoT technology.
RAN Radio Access Network
FIG. 1 shows a system structure of System Architecture Evolution (SAE) according to the prior art, in which:
Evolved Universal Terrestrial Radio Access Network (E-UTRAN) 102 is a radio access network, including an eNodeB/NodeB which provides an interface for the UE to access the radio network.
Mobility Management Entity (MME) 103 is responsible for managing mobility context, session context and security information of the UE.
Serving Gateway (SGW) 104 is mainly used for providing a user plane function.
the MME 103 and the SGW 104 may be in a same physical entity.
Packet data network Gateway (PGW) 105 is responsible for charging, legal listening and other functions.
the PGW 105 may also be in the same physical entity with the SGW 104.
PCRF Policy and Charging Rule Function
SGSN Serving GPRS Support Node
UMTS Universal Mobile Telecommunications System
HSS Home Subscriber Server
V2X vehicle to everything
V2X includes Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (V2I) and Vehicle-to-Pedestrian (V2P).
V2V Vehicle-to-Vehicle
V2I Vehicle-to-Infrastructure
V2P Vehicle-to-Pedestrian
the three V2X communication schemes provide intelligent services for drivers via sensing each other.
the transmission facilities such as vehicles, road infrastructure or pedestrian, can collect environment information utilizing information transmitted by another vehicle or a sensor. Through sharing the information, intelligent services can be provided, e.g., collision warning or automatic driving. These intelligent services may be divided into three classes.
the first class relates to road safety, including: 1, when a vehicle finds a danger, e.g., there is an obstacle ahead, the vehicle is able to remind other vehicles in time; 2, the vehicle is able to inform others its driving way to help other vehicles to make more accurate decision; 3, provide warning to others when getting close to an intersection; 4, provide warning to others with leaving highway; 5, provide warning to others for temporary/emergency stop; 6, provide warning for vehicle lane change; 7, accident report; 8, warning provided by a car driver to roadside pedestrians/cyclists.
the second class relates to traffic efficiency, including improvement of traffic fluidity and performing effective measures to solve congestions in real time.
the management department may apply traffic rules flexibly according to some detailed conditions, e.g., adjustable speed limit, variable traffic light periodicity and light sequence, intersection automatic vehicle control, way clearing for ambulance/fire engine/police car.
the third class relates to other applications, e.g., intelligent traffic can provide automatic parking, navigation status and road sign recognition, etc.
intelligent traffic can provide automatic parking, navigation status and road sign recognition, etc.
the V2X is helpful for the implementation of monitoring, speed limit breaking warning, restricted area management, ordering to stop, etc.
the V2X makes the charging for the road toll and parking fees more convenient, which reduces vehicle congestion to some extent and reduce the low-speed rear-end collisions frequently happen at the toll gate.
the E-UTRAN enables the UE (in the present disclosure, for the V2V service, the vehicle may act as the UE, the same applies in the following) to exchange V2V relevant information with other adjacent UEs.
the exchanging of the V2V relevant information needs to meet the authentication and proximity principle of the E-UTRAN.
the proximity principle is configured by the operator.
the UE is able to exchange the V2V relevant information even if it is not in the E-UTRAN serving area.
the UE supporting the V2V application transmits application layer information, e.g., position and attribute of the UE.
the length of the V2V application layer message is variable, so as to be fit for different information contents.
the operator may configure that the V2V message is transmitted periodically.
the V2V messages are mainly broadcast messages.
the V2V message may be directly transmitted to the nearby UEs, or transmitted to other UEs via a Road Side Unit (RSU).
RSU Road Side Unit
the UE in the present disclosure, for the V2I service, the vehicle may act as the UE, the same applies in the following) supporting the V2I application transmits application layer information to the RSU.
the RSU transmits the application layer information to a set of UEs supporting the V2I application or to one UE supporting the V2I application.
the E-UTRAN enables the UE (in the present disclosure, for the V2P service, the vehicle may act as the UE, the same applies in the following) to exchange V2P relevant information with other adjacent UEs.
the exchanging of the V2P relevant information needs to meet the authentication and proximity principle of the E-UTRAN.
the proximity principle is configured by the operator.
the UE is able to exchange the V2P relevant information even if it is not in the E-UTRAN serving area.
the V2P message may be directly transmitted to the nearby UEs or transmitted to other UEs via the RSU.
the V2X communication may be implemented via the application layer protocol PC5 or through the Uu interface.
the V2X message generally relates to public security. Therefore, the V2X message needs to be transmitted to UEs of different operators in the relevant region.
Embodiments of the present disclosure provide a method and an apparatus for transmitting a V2X message.
V2X service data can be transmitted to all relevant UEs, which reduce traffic accidents and improve traffic efficiency.
the technical solution of the present disclosure includes the following.
a method for transmitting a vehicle to everything message including:
a first base station receiving an uplink V2X message transmitted by a user equipment (UE), and transmitting a downlink V2X message which is generated based on the uplink V2X message to UEs within coverage of the first base station;
UE user equipment
the first base station transmitting the downlink V2X message or configuration information for radio resources allocated by the first base station for the downlink V2X message to a second base station of an operator different from an operator that the first base station belongs to, wherein the second base station transmits the downlink V2X message or the configuration information for the radio resources to UEs within coverage of the second base station; wherein the configuration information for the radio resources is used by the UEs within the coverage of the second base station to receive the downlink V2X message on resources indicated by the configuration information.
the first base station transmits the downlink V2X message to the UEs within the coverage of the first base station via a broadcast manner;
the second base station transmits the downlink V2X message to the UEs within the coverage of the second base station via a broadcast manner or a unicast manner.
the downlink V2X message is transmitted to the second base station via an X2 interface or an S1 interface between base stations;
the configuration information for the radio resources is transmitted to the second base station via the X2 interface or the S1 interface between base stations.
the transmitting the downlink V2X message or the configuration information for the radio resources via the X2 interface between the base stations includes: transmitting the downlink V2X message or the configuration information for the radio resources via a control plane or a user plane of the X2 interface.
the transmitting the downlink V2X message or the configuration information for the radio resources via the S1 interface between the base stations includes: the first base station transmitting an eNB configuration transfer message to a core network, wherein the eNB configuration transfer message includes information of the second base station and the downlink V2X message or the configuration information for the radio resources; the core network transmitting the downlink V2X message or the configuration information for the radio resources to the second base station via a Mobility Management Entity (MME) configuration transfer message according to the received eNB configuration transfer message.
MME Mobility Management Entity
the second base station after receiving the configuration information for the radio resources, transmitting the downlink V2X message to the UEs within the coverage of the second base station via a broadcast manner or a unicast manner.
a method for transmitting a vehicle to everything (V2X) message including:
a V2X application layer service module connected with a first base station receiving via the first base station an uplink V2X message transmitted by a UE, and transmitting via the first base station a downlink V2X message which is generated based on the uplink V2X message to UEs within coverage of the first base station;
the V2X application layer service module connected with the first base station transmitting the downlink V2X message to a second base station of an operator different from an operator that the first base station belongs to, wherein the second base station transmits the downlink V2X message to UEs within coverage of the second base station.
the V2X application layer service module transmits the downlink V2X message to the UEs within the coverage of the first base station via the first base station through a broadcast manner or a unicast manner; and/or,
the second base station transmits the downlink V2X message to the UEs within the coverage of the second base station through the broadcast manner or the unicast manner.
the downlink V2X message is transmitted to the second base station via an interface between the V2X application layer service module connected with the first base station and a V2X application layer service module connected with the second base station; or, the downlink V2X message is transmitted to the second base station via an interface between the V2X application layer service module connected with the first base station and the second base station; or, the downlink V2X message is transmitted to the second base station via an interface between an enhanced multimedia broadcast/multicast service (eMBMS) node of the first base station and an eMBMS node of the second base station; or, the downlink V2X message is transmitted to the second base station via an interface between a Multi-cell/multicast Coordination Entity (MCE) for the eMBMS of the first base station and the second base station.
MCE Multi-cell/multicast Coordination Entity
the V2X application layer service module transmitting the generated downlink V2X message to the first base station includes: the V2X application layer service module forwarding the downlink V2X message to the first base station via a Broadcast Multicast Service Center (BMSC), a MBMS gateway (MBMS-GW), a MME and a MCE of the operator that the first base station belongs to;
BMSC Broadcast Multicast Service Center
MBMS-GW MBMS gateway
MME Mobility Management Entity
the transmitting the downlink V2X message via the interface between the eMBMS node for the first base station and the eMBMS node for the second base station includes:
the V2X application layer service module connected with the first base station transmitting the downlink V2X message to the BMSC of the operator of the first base station, the BMSC transmitting the downlink V2X message to the MCE of the operator of the second base station via the MBMS-GW and the MME of the operator of the second base station; or, the V2X application layer service module connected with the first base station transmitting the downlink V2X message to the BMSC of the operator of the first base station, the BMSC forwarding the downlink V2X message to the MCE of the operator of the second base station via the MBMS-GW and the MME of the operator of the first base station, and the MCE is used for forwarding the downlink V2X message to the second base station.
the V2X application layer service module transmitting the generated downlink V2X message to the first base station includes: the V2X application layer service module forwarding the downlink V2X message to the first base station via the BMSC, the MBMS-GW and the MME of the operator of the first base station;
the transmitting the downlink V2X message via the interface between the MCE of the first base station and the second base station includes: the V2X application layer service module connected with the first base station transmitting the downlink V2X message to the BMSC of the operator of the first base station, the BMSC transmitting the downlink V2X message to the MCE of the operator of the first base station via the MBMS-GW and the MME of the operator of the first base station, wherein the MCE forwards the downlink V2X message to the second base station via the interface between the MCE and the second base station established in advance.
a method for transmitting a vehicle to everything (V2X) message including:
a first base station having a V2X capability exchanging configuration information with a base station belongs to an operator different from an operator of the first base station, the configuration information comprises whether a base station has the V2X capability and frequency information for V2X message transmission of the base station;
the first base station transmitting V2X configuration information to UEs within coverage of the first base station, wherein the V2X configuration information includes information about frequency for V2X message transmission of a base station of another operator, the UEs receives the downlink V2X message of the base station of the another operator on the frequency.
the V2X configuration information exchanged between different base stations is transmitted via an X2 interface or an S1 interface between the base stations.
the V2X configuration information further includes information about frequency for the downlink V2X message transmission of the first base station.
a method for receiving a vehicle to everything (V2X) message including:
UE User Equipment
eMBMS enhanced multimedia broadcast multimedia service
the UE determining according to the received V2X configuration information and a local mapping table that the first base station broadcasts the downlink V2X message on the eMBMS bearer identified by a Temporary Mobile Group Identity (TMGI), and receiving the downlink V2X message transmitted via the eMBMS bearer, wherein the mapping table comprises a mapping relationship between the V2X configuration information and the TMGI.
TMGI Temporary Mobile Group Identity
the mapping table includes a mapping relationship between TMGI-1 of the operator of the first base station and TMGI-2 of the operator of the second base station, the mapping table is saved in the second base station; the V2X configuration information includes the TMGI-1 used by the first base station for identifying the eMBMS bearer, and the TMGI-1 is replaced by the second base station during forwarding with the TMGI-2 used by the second base station according to the mapping table.
the mapping table includes a mapping relationship between the TMGI-1 of the operator of the first base station and a V2X service identifier, the V2X configuration information includes the V2X service identifier;
the UE determining that the first base station broadcasts the downlink V2X message on the eMBMS bearer identified by the TMGI-1 according to the received V2X configuration information and the mapping relationship between the V2X service identifier and the TMGI-1.
a method for transmitting a vehicle to everything (V2X) message including:
the preconfigured node is an eMBMS forwarding node of the operator of the first base station for transmitting the V2X message to the second base station;
the preconfigured node replacing according to a local mapping table Temporary Mobile Group Identity (TMGI)-1 used by the first base station for identifying the eMBMS bearer with a TMGI-2 used by the second base station, such that UEs within coverage of the second base station receive the downlink V2X message broadcasted by the second base station;
TMGI Temporary Mobile Group Identity
the mapping table includes a mapping relationship between the TMGI-1 of the operator of the first base station and the TMGI-2 of the operator of the second base station;
a method for transmitting a vehicle to everything (V2X) message including:
a base station receiving an uplink V2X message reported by a user equipment (UE);
the base station broadcasting a downlink V2X message generated based on the uplink V2X message;
the downlink V2X message is broadcasted via an eMBMS bearer identified by a dedicated Temporary Mobile Group Identity (TMGI), the dedicated TMGI is allocated for a V2X service in advance and does not includes an operator identifier, for the same V2X service, different operators use the same dedicated TMGI.
TMGI Temporary Mobile Group Identity
An apparatus for transmitting a vehicle to everything (V2X) message including: an uplink message receiver, a UE transmitter and a base station transmitter;
the uplink message receiver is configured to receive an uplink V2X message transmitted by a UE
the UE transmitter is configured to transmit a downlink V2X message generated based on the uplink V2X message to UEs within coverage of a present base station;
the base station transmitter is configured to transmit the downlink V2X message or configuration information for radio resources allocated by the present base station to the downlink V2X message to a second base station belonging to an operator different from the present base station, wherein the second base station transmits the downlink V2X message or the configuration information for the radio resources to UEs within coverage of the second base station; the configuration information for the radio resources is used by the UEs within the coverage of the second base station for receiving the downlink V2X message on resources indicated by the configuration information.
An apparatus for transmitting a vehicle to everything (V2X) message including: an uplink message receiver, a UE transmitter and a base station transmitter;
the uplink message receiver is configured to receive via a base station connected with the apparatus an uplink V2X message transmitted by a UE within coverage of the base station;
the UE transmitter is configured to transmit via the base station connected with the apparatus a downlink V2X message generated based on the uplink V2X message to UEs within the coverage of the base station;
the base station transmitter is configured to transmit the downlink V2X message to a second base station of another operator, wherein the second base station transmits the downlink V2X message to UEs within coverage of the second base station.
An apparatus for transmitting a vehicle to everything (V2X) message including: a configuration information exchanging unit and a V2X configuration information transmitter;
the configuration information exchanging unit is configured to exchange configuration information with a base station of another operator different from a present base station; wherein the configuration information includes whether a base station has a V2X capability and information about frequency for V2X message transmission of the base station;
the V2X configuration information transmitter is configured to transmit V2X configuration information to UEs within the coverage of the present base station according to the exchanged configuration information, wherein the V2X configuration information includes information about frequency for V2X message transmission of the base station of the another operator, the UEs receives the downlink V2X message of the base station of the another operator on the frequency.
An apparatus for receiving a vehicle to everything (V2X) message including: a configuration information receiver and a V2X receiver;
the configuration information receiver is configured to receive via a second base station V2X configuration information transmitted by a first base station; wherein the first base station broadcasts V2X message via an eMBMS bearer, the second base station belongs to an operator different from the first base station; and
the V2X receiver is configured to determine according to the received V2X configuration information and a local mapping table that the first base station broadcasts the V2X message on the eMBMS bearer identified by a Temporary Mobile Group Identity (TMGI), and receive the downlink V2X message transmitted on the eMBMS bearer, wherein the mapping table includes a mapping relationship between the V2X configuration information and the TMGI.
TMGI Temporary Mobile Group Identity
An apparatus for transmitting a vehicle to everything (V2X) message applicable for an eMBMS forwarding node used for transmitting a V2X message from a first base station to a second base station, the apparatus including: a V2X receiver, a Temporary Mobile Group Identity (TMGI) replacing unit and a V2X transmitter;
V2X vehicle to everything
TMGI Temporary Mobile Group Identity
the V2X receiver is configured to receive a downlink V2X message transmitted from the first base station to the second base station; wherein the first base station broadcasts the downlink V2X message via an eMBMS bearer;
the TMGI replacing unit is configured to replace TMGI-1 used by the first base station for identifying the eMBMS bearer with TMGI-2 used by the second base station according to a mapping table, such that user equipment (UEs) within coverage of the second base station receive the downlink V2X message broadcasted by the second base station; wherein the mapping table includes a mapping relationship between the TMGI-1 of an operator of the first base station and the TMGI-2 of an operator of the second base station; and
the V2X transmitter is configured to transmit the downlink V2X message after the TMGI-1 is replaced.
An apparatus for transmitting a vehicle to everything (V2X) message including: a receiver and a broadcasting unit;
the receiver is configured to receive an uplink V2X message reported by a user equipment (UE);
the broadcasting unit is configured to broadcast a downlink V2X message generated based on the uplink V2X message;
the downlink V2X message is broadcasted via an Enhanced Multimedia Broadcast/Multicast Service (eMBMS) bearer identified by a dedicated Temporary Mobile Group Identity (TMGI), the dedicated TMGI is allocated in advance for a V2X service and does not include an operator identifier, for the same V2X service, different operators use the same dedicated TMGI.
eMBMS Enhanced Multimedia Broadcast/Multicast Service
TMGI Temporary Mobile Group Identity
the first base station or the V2X application layer service module transmits the downlink V2X message or the configuration information for the radio resources allocated for the downlink V2X message to a second base station which belongs to a different operator and has an overlapped or adjacent coverage area with the first base station, such that the second base station can transmit the downlink V2X message or the configuration information for the radio resources to UEs within its coverage. Therefore, all relevant UEs can receive the V2X message. As such, traffic accident may be reduced and traffic efficiency may be improved.
the first base station obtains the V2X capability and frequency information for V2X transmission from a base station of another operator, transmits V2X frequency information of the second base station of another operator which has V2X capability and has an overlapped coverage or an adjacent coverage with the first base station to the UEs within the coverage of the first base station via the V2X configuration information.
the UEs within the coverage of the first base station can not only receive the V2X message transmitted by the first base station, but also receive the V2X message transmitted by the second base station.
traffic accident may be reduced and traffic efficiency may be improved.
FIG. 1 is a schematic diagram illustrating a system architecture of SAE according to the prior art.
FIG. 2 is a flowchart illustrating a first method for transmitting V2X message according to various embodiments of the present disclosure.
FIG. 3 is a flowchart illustrating a second method for transmitting V2X message according to various embodiments of the present disclosure.
FIG. 5 is a schematic diagram illustrating embodiment 2 of the present disclosure.
FIG. 8 is a schematic diagram illustrating embodiments 5 and 6 of the present disclosure.
FIG. 10 is a schematic diagram illustrating embodiment 8 of the present disclosure.
V2X For a V2X service, vehicles communicating with each other may belong to different operators. As described in the background of the present disclosure, the V2X message needs to be sent to UEs of various operators in the relevant region. Therefore, it is necessary to investigate how to provide the V2X service to users of different operators. As to frequency, different operators may share the same frequency band. At this time, vehicles of different operators may operate on the same frequency to communicate with each other. Different operators may also operate on different frequency bands. At this time, UEs transmit data on merely the frequency supported by their respective operators. Since the V2X message is related to security, the V2X message should be received by any relevant UE, no matter which operator the UE belong to.
a vehicle transmits a message (vehicle collision) to the RSU.
the application layer generates a new V2X message which is used for warning other vehicles on the road about the collision.
the present disclosure provides two V2X message transmission methods.
the base station or a V2X application layer service module coupled to the base station transmits a generated downlink V2X message or V2X radio resource configuration information to a base station of another operator, such that UEs of different operators can receive the V2X message.
frequency information of a base station of another operator is provided to the UEs of a local base station, such that the UEs are able to receive not only the V2X message transmitted by the local base station but also the downlink V2X message transmitted by the base station of said another operator.
FIG. 2 is a flowchart illustrating a first V2X message transmitting method according to the present disclosure.
FIG. 2 shows transmission of the V2X message or the V2X radio configuration information between base stations of different operators.
UEs of different operators can receive the V2X message, which helps to reduce traffic accident and improve traffic efficiency.
the transmission of the information may be implemented via an X2 interface or via an S1 interface between base stations, or via an interface between V2X application service modules, or via a newly-defined interface between the V2X application layer service module and the base station, i.e. a new interface is defined between the V2X application layer service module of one operator and the base station of another operator.
the V2X message is transmitted by an eMBMS bearer of operator 1
a node e.g., Broadcast Multicast Service Center (BMSC), MBMS GW or MCE
BMSC Broadcast Multicast Service Center
MCE Mobility Management Entity
the V2X message or the V2X radio configuration information is transmitted via this interface.
step 201 operators exchange configuration information in advance.
Step 201 is optional.
the exchanged configuration information may have various kinds of contents, e.g., whether a base station has V2X capability and/or the frequency allocated by the operator for each base station for transmitting V2X message, etc.
the information may be configured via Operation Administration and Maintenance (OAM), and may be transmitted via the X2 interface or via the S1 interface between the base stations.
OAM Operation Administration and Maintenance
information such as the frequency on which the base station 1 transmits V2X message and whether the base station 1 has the V2X capability may be included in an S1 message transmitted by the base station 1 to the base station 2.
the information such as the frequency on which the base station 2 transmits V2X message and whether the base station 2 has the V2X capability may be included in an S1 message returned by the base station 2 to the base station 1.
a UE transmits an uplink V2X message to the base station 1.
the base station 1 belongs to the operator 1.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road through a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 After receiving the uplink V2X message, the base station 1 transmits the uplink V2X message to a V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or may be an independent 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.
the downlink V2X message is used for providing the traffic condition on the road to other users. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
the V2X application layer service module transmits the downlink V2X message to the base station 1.
the base station 1 configures downlink radio resources, and transmits the downlink V2X message to UEs within the coverage of the base station 1.
the base station 1 transmits the downlink V2X message to the UEs within the coverage of the base station 1 via a broadcast manner.
the broadcast manner may be a multimedia broadcast multicast service single frequency network (MBSFN) manner, or a cell broadcast manner, or broadcasting via a broadcast channel.
MMSFN multimedia broadcast multicast service single frequency network
step 204 the base station 1 or the V2X application layer service module transmits the downlink V2X message or configuration information for the radio resources allocated by the base station 1 for the downlink V2X message to the base station 2.
the base station 1 belongs to operator 1, and the base station 2 belongs to an operator different from the base station 1, e.g. operator 2.
the base station 1 After receiving the uplink V2X message of the UE, 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 transmits the downlink V2X message to the base station 1.
the base station 1 or the V2X application layer service module knows that the base station 1 needs to provide the downlink V2X message to the UEs of the base station 2.
the present disclosure does not restrict that the UEs of which base stations need to be informed, which may be designated in the downlink V2X message or other interface messages according to a practical requirement or may be designated via other manners.
the base station 1 and the base station 2 have an overlapped coverage or adjacent coverage.
the base station 1 or the V2X application layer service module transmits the downlink V2X message to the base station 2.
the message may be transmitted via the following manners:
MCE Multi-Cell/Multicast Coordination Entity
the base station 1 or the V2X application layer service module may also transmit to the base station 2 the configuration information for the radio resources allocated for the downlink V2X message.
the configuration information may be transmitted via the X2 interface or S1 interface between the base stations, or the configuration information may be transmitted to the base station 2 via an eMBMS node (e.g. mobility management entity, MME) of the operator of the base station 1.
MME mobility management entity
the base station 2 transmits the downlink V2X message or the configuration information for the radio resources allocated for the V2X message to UEs within the coverage of the base station 2.
the base station 2 receives the downlink V2X message transmitted by the base station 1 or the V2X application layer service module.
the base station 2 broadcasts the downlink V2X message to the UEs.
the base station 2 receives the configuration information for the radio resources allocated by the base station 1 for the V2X message, and transmits the configuration information for the V2X message to the UEs via a broadcast or unicast manner.
the configuration information for the radio resources indicates the radio resources configured by the base station 1 of operator 1.
the UEs within the coverage of the base station 2 receive the configuration information and can receive the V2X message broadcasted by the base station 1 on corresponding resources at corresponding time. For example, if the base station 1 and the base station 2 operate on the same frequency, the UEs may receive the V2X message broadcasted by the base station 1 on the corresponding resources at the corresponding time.
the UE switches to the frequency of the base station 1 on the time of the V2X broadcast to receive the V2X message; in the case that the UE is able to operate on the two frequencies at the same time, the UE enables the frequency of the base station 1 at the time of the V2X broadcast to receive the V2X message.
FIG. 3 is a flowchart illustrating a second method for transmitting V2X message according to various embodiments of the present disclosure.
FIG. 3 shows an embodiment in which base stations of different operators exchange V2X information and broadcast the nearby V2X information to the UEs. Through this method, UEs of different operators can receive the V2X message, which helps to reduce traffic accident and improve traffic efficiency.
the information exchanging may be implemented via an X2 interface or an S1 interface between base stations, or may be configured via operation maintenance.
step 301 operators exchange configuration information in advance.
the configuration information may include information such as frequency for transmitting V2X message allocated by the operator for each base station, whether the base station has a V2X capability, etc.
the information exchanging may be configured by OAM, and may be implemented via the X2 or S1 interface between base stations.
the base station 1 transmits V2X information of the base station 1 to the base station 2. If the V2X information of the base station 1 is transmitted via the X2 interface, the V2X information may be included in the X2 setup request message. If the V2X information of the base station 1 is transmitted via the S1 interface, the base station 1 may transmit an eNB configuration transfer message containing the V2X information of the base station 1 to the core network, the core network transmits an MME configuration transfer message containing the V2X information of the base station 1 to the base station 2. Or, the V2X information may be configured via OAM.
the base station 2 transmits the V2X information of the base station 2 to the base station 1. If the V2X information of the base station 2 is transmitted via the X2 interface, the V2X information may be included in the X2 setup request message. If the V2X information of the base station 2 is transmitted via the S1 interface, the base station 2 may transmit an eNB configuration transfer message containing the V2X information of the base station 2 to the core network, the core network transmits an MME configuration transfer message containing the V2X information of the base station 2 to the base station 1. Or, the V2X information may be configured via OAM.
step 302 the base station 1 having the V2X capability transmits V2X configuration information to the UEs.
the base station 1 determines that the base station 1 and the base station 2 have an overlapped coverage area or an adjacent area. Therefore, the base station 1 generates V2X configuration information according to the configuration information of the base station 2 and transmits the generated V2X configuration information to the UEs within the coverage of the base station 1.
the V2X configuration information includes at least the frequency on which the base station 2 transmits V2X message. For example, in this embodiment, the base station 1 transmits V2X message on frequency 1, the base station 2 transmits V2X message on frequency 2. Thus, the V2X configuration information includes at least the frequency 2.
the base station 1 may inform the UEs that the base station 1 supports V2X.
the UEs already obtained the frequency 1 of the base station 1 from the existing broadcast information. As such, the UEs know that the V2X message is broadcasted on frequency 1 and frequency 2.
the UEs having corresponding capability may receive the V2X messages transmitted on frequencies 1 and 2 at the same time.
the V2X configuration information may further include the frequency 1.
step 303 the base station 2 having the V2X capability transmits the V2X configuration information to the UEs.
the base station 2 determines that the base station 1 and the base station 2 have an overlapped coverage area. Therefore, the base station 2 generates V2X configuration information according to the configuration information of the base station 1 and transmits the generated V2X configuration information to the UEs within the coverage of the base station 2.
the V2X configuration information includes at least the frequency on which the base station 1 transmits V2X message. For example, in this embodiment, the base station 1 transmits V2X message on frequency 1, the base station 2 transmits V2X message on frequency 2. Thus, the V2X configuration information includes at least the frequency 1.
the base station 2 may inform the UEs that the base station 2 supports V2X.
the UEs already obtained the frequency 2 of the base station 2 from the existing broadcast information. As such, the UEs know that the V2X message is broadcasted on frequency 1 and frequency 2.
the UEs having corresponding capability may receive the V2X messages transmitted on frequencies 1 and 2 at the same time. Certainly, the V2X configuration information may further include the frequency 2.
the first method for transmitting the V2X message may further include two kinds of implementations.
the first implementation manner includes: the base station 1 receives the uplink V2X message transmitted by the UE, and transmits the downlink V2X message which is generated based on the uplink V2X message to UEs within the coverage of the base station 1; the base station 1 transmits the downlink V2X message or configuration information for radio resources allocated by the base station 1 for the downlink V2X message to the base station 2 which belongs to another operator (for example, a base station having an overlapped coverage area with the base station 1 or an adjacent base station), such that the base station 2 transmits the downlink V2X message or the radio resource configuration information to UEs within the coverage of the base station 2.
the radio resource configuration information is used by the UEs within the coverage of the base station 2 for receiving the downlink V2X message on the indicated resources.
the second implementation manner includes: the V2X application layer service module connected with the base station 1 receives the uplink V2X message transmitted by the UE, and transmits via the base station 1 a downlink V2X message which is generated based on the uplink V2X message to the UEs within the coverage of the base station 1; the V2X application layer service module connected with the base station 1 transmits the downlink V2X message to the base station 2 which belongs to another operator (e.g., a base station having an overlapped coverage area with the base station 1 or a base station adjacent to the base station 1), such that the base station 2 transmits the downlink V2X message to the UEs within the coverage of the base station 2.
another operator e.g., a base station having an overlapped coverage area with the base station 1 or a base station adjacent to the base station 1
FIG. 4 shows embodiment 1 of the present disclosure.
FIG. 4 shows the transmission of the V2X message between base stations of different operators. Through this method, UEs of different operators can receive the downlink V2X message, which reduces traffic accident and improves traffic efficiency.
the information transmission may be implemented via the X2 interface between the base stations.
a UE transmits an uplink V2X message to the base station 1.
the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
step 402 the V2X application layer service module transmits the downlink V2X message to the base station 1.
the base station 1 configures downlink radio resources for the downlink V2X message, and transmits the downlink V2X message to the UEs within the coverage of the base station 1.
the base station 1 transmits the downlink V2X message to UEs within the coverage of the base station 1 via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 403 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 403 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 403 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 403 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
the base station 1 forwards the downlink V2X message to the base station 2, wherein the base station 2 belongs to an operator different from the base station 1, e.g., the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
step 405 the base station 2 configures downlink radio resources for the downlink V2X message, and transmits the downlink V2X message to UEs within its coverage.
step 405 may vary with respect to different transmission manners of the downlink V2X message. Reference may be made to step 403 for the details.
FIG. 5 shows embodiment 2 of the present disclosure.
FIG. 5 shows the transmission of V2X message between base stations of different operators. Through this method, UEs of different operators can receive the V2X message, which reduces traffic accident and improves traffic efficiency.
the information transmission may be implemented via the S1 interface between the base stations.
a UE transmits an uplink V2X message to the base station 1.
the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
step 502 the V2X application layer service module transmits the downlink V2X message to the base station 1.
the base station 1 configures downlink radio resources for the downlink V2X message, and transmits the downlink V2X message to the UEs within the coverage of the base station 1.
the base station 1 transmits the downlink V2X message to UEs within the coverage of the base station 1 via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 503 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 503 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 503 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 503 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
step 504 the base station 1 forwards the downlink V2X message to the base station 2, wherein the base station 2 belongs to an operator different from the base station 1, 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 or have adjacent coverage areas.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
the base station 1 receives the uplink V2X message of the user and forwards the message to the V2X application layer service module.
the V2X application layer service module generates the downlink V2X message and transmits the downlink V2X message to the base station 1.
the base station 1 knows that there is the base station 2 of operator 2 within its coverage. Therefore, the base station 1 needs to inform the UEs within the coverage of the base station 2 of the downlink V2X message. There is no X2 interface between the base station 1 and the base station 2.
the base station 1 transmits the downlink V2X message to the base station 2 via an S1 interface.
the base station 1 transmits an eNB configuration transfer message containing information of a destination base station the downlink V2X message to the core network.
the core network transmits an MME configuration transfer message containing the downlink V2X message to the base station 2.
the transmission within the core network may involve two MME nodes. MME1 connected with the base station 1 finds MME2 connected with the base station 2 according to the destination address contained in the message and then transmits the message to the base station 2 via MME2.
step 505 the base station 2 configures downlink radio resources for the downlink V2X message, and transmits the downlink V2X message to UEs within its coverage.
step 505 may vary with respect to different transmission manners of the downlink V2X message. Reference may be made to step 503 for the details.
FIG. 6 shows embodiment 3 of the present disclosure.
FIG. 6 shows the transmission of V2X message between V2X application layer service modules of different operators. Through this method, users of different operators can receive the downlink V2X message, which reduces traffic accident and improves traffic efficiency.
the information transmission may be implemented via an interface between the V2X application layer service modules.
a UE transmits an uplink V2X message to the base station 1, wherein the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
step 602 the V2X application layer service module transmits the downlink V2X message to the base station 1.
step 603 the base station 1 configures downlink radio resources and transmits the downlink V2X message to UEs within its coverage.
the base station 1 transmits the downlink V2X message to UEs within the coverage of the base station 1 via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 603 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 603 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 603 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 603 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
step 604 the V2X application layer service module forwards the downlink V2X message to the V2X application layer service module connected with the base station 2.
the base station 1 and the base station 2 have an overlapped coverage area or have adjacent coverage areas.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
the base station 1 receives the uplink V2X message of the user and forwards the message to the V2X application layer service module.
the V2X application layer service module generates the downlink V2X message.
the V2X application layer service module connected with the base station 1 knows that the message needs to be transmitted to the UEs under base stations 1 and 2.
the V2X application layer service module connected with the base station 1 forwards the downlink V2X message to the V2X application layer service module connected with the base station 2.
each base station has a local V2X application function. Thus, it is possible to transmit the downlink V2X message to the application layer of the base station 2 via the application layer of the base station 1.
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 with the base station 2 transmits the downlink V2X message to the base station 2.
step 606 the base station 2 configures downlink radio resources for the downlink V2X message and transmits the downlink V2X message to UEs within its coverage.
step 606 may vary with respect to different transmission manners of the downlink V2X message. Reference may be made to step 603 for details.
FIG. 7 shows embodiment 4 of the present disclosure.
FIG. 7 shows the transmission of the V2X message between the V2X application layer service modules of different operators.
the information may be transmitted to the MBMS-GW of operator 2 via the BMSC of operator 1, or may be transmitted to the MCE of operator 2 via the MBMS-GW of operator 1.
a UE transmits an uplink V2X message to the base station 1, wherein the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
step 702 the V2X application layer service module transmits the downlink V2X message to the BMSC of the operator of the base station 1.
the BMSC transmits a session start message including the downlink V2X message to the MBMS-GW, the MBMS-GW transmits the session start message to the MCE via the MME.
the transmission path of the message is similar to that of the existing session start message.
step 704 the MCE of the operator of the base station 1 transmits a service start response message to the BMSC via the MME and the MBMS-GW.
Step 704 is transmission procedure of the MBMS session start response message, i.e., the MCE transmits the session start response message to the MME, the MME transmits the session start response message to the MBMS-GW, and the MBMS-GW transmits the session start response message to the BMSC.
the path of the response message is similar to that the existing session start response message.
step 705 the MCE of the operator of the base station 1 transmits the session start message including the downlink V2X message to the base station 1.
step 706 the base station 1 transmits a session start response message to the MCE.
step 707 the base station 1 transmits the downlink V2X message to the UEs.
the base station 1 transmits the downlink V2X message to UEs within its coverage via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 707 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 707 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 707 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 707 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
the BMSC transmits the session start message including the downlink V2X message to the MCE of operator 2 via the MBMS-GW and the MME of operator 2.
the base station 1 and the base station 2 have an overlapped coverage area or are adjacent base stations.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
the MBSC of operator 1 and the MBMS-GW of operator 2 have a connection in advance.
the BMSC of operator 1 transmits the session start message including the downlink V2X message to the MBMS-GW of operator 2.
the MBMS-GW of operator 2 transmits the session start message to the corresponding MME. Then the MME forwards the session start message to the MCE.
the subsequent procedure is similar to existing eMBMS procedure.
the MME of operator 1 transmits the session start message including the downlink V2X message to the MCE of operator 2.
the base station 1 and the base station 2 have an overlapped coverage area or are adjacent base stations.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
Operator 2 configures that the MCE needs to establish an M3 interface with a particular MME of operator 1.
the MCE has established the M3 interface with the MME of operator 1.
the MME After receiving the session start request, the MME knows that the session is used for transmitting downlink V2X message.
the MME transmits the session start message to the MCE of operator 1 or to the MCE of operator 2.
step 709 the MCE of operator 2 transmits a session start response message to the BMSC via the MME and MBMS-GW of operator 1.
Step 709 is a transmission procedure of the MBMS session start response message, i.e., the MCE transmits the session start response message to the MME, the MME transmits the session start response message to the MBMS-GW, and the MBMS-GW transmits the session start response message to the BMSC.
the path of the response message is similar to that of the existing session start response message.
step 710 the MCE of operator 2 transmits the session start message including the downlink V2X message to the base station 2.
step 711 the base station 2 transmits the session start response message to the MCE of operator 2.
step 712 the base station 2 transmits the downlink V2X message to the UEs.
step 712 may vary with respect to different transmission manners of the downlink V2X message. Reference may be made to step 707 for details.
FIG. 8 shows embodiment 5 of the present disclosure.
FIG. 8 shows the transmission of the V2X message between base stations of different operators. Through this method, users of different operators can receive the downlink V2X message, which reduces traffic accident and improves traffic efficiency.
the information may be transmitted to the MCE of operator 1 via the BMSC and MBMS-GW of operator 1, and then transmitted to the base station of operator 2 from the MCE of operator 1.
a UE transmits an uplink V2X message to the base station 1, wherein the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
step 802 the V2X application layer service module transmits the downlink V2X message to the BMSC of the operator of the base station 1.
step 803 the BMSC of the operator of the base station 1 transmits a session start message including the downlink V2X message to the MBMS-GW, the MBMS-GW transmits the session start message to the MCE via the MME.
the transmission path of the message is similar to that of the existing session start message.
step 804 the MCE of the operator of the base station 1 transmits a service start response message to the BMSC via the MME and the MBMS-GW.
Step 804 is transmission procedure of the MBMS session start response message, i.e., the MCE transmits the session start response message to the MME, the MME transmits the session start response message to the MBMS-GW, and the MBMS-GW transmits the session start response message to the BMSC.
the path of the response message is similar to that the existing session start response message.
step 805 the MCE of the operator of the base station 1 transmits the session start message including the downlink V2X message to the base station 1.
step 806 the base station 1 transmits a session start response message to the MCE.
step 807 the base station 1 transmits the downlink V2X message to the UEs.
the base station 1 transmits the downlink V2X message to users within its coverage via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 807 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 807 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 807 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 807 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
step 808 the MCE of the operator of the base station 1 transmits the session start message including the downlink V2X message to the base station 2.
the base station 1 and the base station 2 have an overlapped coverage area or are adjacent base stations.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
the MCE of operator 1 and the base station of operator 2 have a connection in advance.
the base station 2 has established an M2 interface with the MCE.
the MCE has established an M2 interface with the base station operator 1.
the MCE receives the session start request, and knows that the session is used for transmitting downlink V2X message.
the MCE transmits the session start message to the base station of operator 1 or the base station of operator 2.
step 809 the base station 2 transmits the session start response message to the MCE.
step 810 the base station 2 transmits the downlink V2X message to the UEs.
step 810 may vary with respect to different transmission manners of the downlink V2X message. Reference may be made to step 807 for details.
FIG. 8 may also be used for illustrating another implementation method, i.e. embodiment 6.
a broadcast system is especially deployed for the V2X service, e.g. functions such as BMSC, MBMS-GW and MCE may be configured on one physical entity or multiple physical entities, dedicated for transmitting the downlink V2X message. All base stations within a certain area, whichever operator that the base station belongs to, need to establish an M2 interface with the MCE.
Embodiment 6 is described with reference to FIG. 8. It includes the following steps.
a UE transmits an uplink V2X message to the base station 1, wherein the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
the V2X application layer service module transmits the downlink V2X message to the BMSC in the area where it is located.
the BMSC may be an independent entity or may be combined with other physical entities.
the BMSC of the operator of the base station 1 transmits a session start message including the downlink V2X message to the MCE. If the existing transmission path is adopted, the BMSC transmits the session start message to the MBMS-GW.
the MBMS-GW transmits the session start message to the MCE via the MME.
the transmission path of the message is similar to that of the existing session start message. For simplicity, the MBMS-GW may directly transmit the session start message to the MCE, or the BMSC transmits the session start message to the MCE.
step 804 the MCE of the operator of the base station 1 transmits a session start response message to the BMSC via the MME and the MBMS-GW.
Step 804 is a transmission procedure of the MBMS session start response message, i.e., the MCE transmits the session start response message to the MME, the MME transmits the session start response message to the MBMS-GW, and the MBMS-GW transmits the session start response message to the BMSC.
the transmission path of the response message is similar to that of the existing session start response message.
the MCE of the operator of the base station 1 transmits a session start message including the V2X message to the base station 1.
the MCE determines to adopt the MBSFN manner.
the MCE transmits the session start request message to all base stations within the area, including the base station 1 and the base station 2. Or, the MCE may determine to adopt the cell broadcast manner.
the MCE determines in which cells it broadcasts and transmits the session start request message to the corresponding base stations.
the session start request message includes identifiers of a set of cells. According to the identifiers, the MCE transmits the session start request message to the base stations corresponding to the identifiers.
step 806 the base station 1 transmits a session start response message to the MCE.
step 807 the base station 1 transmits the downlink V2X message to the UEs.
the base station 1 transmits the downlink V2X message to users within its coverage via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 807 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 807 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 807 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 807 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
step 808 the MCE of the operator that the base station 1 belongs to transmits the session start message including the downlink V2X message to the base station 2.
the base station 1 and the base station 2 have an overlapped coverage area or are adjacent base stations.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
the 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 session start request and knows that the session is for transmitting the downlink V2X message.
the MCE transmits a session start message to the base station of operator 1 or the base station of operator 2.
the session start request message includes identifiers of a set of cells. According to the identifiers, the MCE transmits the session start request to the base stations corresponding to the identifiers.
step 809 the base station 2 transmits a session start response message to the MCE.
step 810 the base station 2 transmits the downlink V2X message to the UEs.
step 810 may vary with respect to different transmission manners of the downlink V2X message. Reference may be made to step 807 for details.
FIG. 9 shows embodiment 7 of the present disclosure.
FIG. 9 shows the transmission of V2X radio configuration information between base stations of different operators.
users of different operators can receive the downlink V2X message, which reduces traffic accident and improves traffic efficiency.
the information may be transmitted via the X2 interface between the base stations.
a UE transmits an uplink V2X message to the base station 1, wherein the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
step 902 the V2X application layer service module transmits the downlink V2X message to the base station 1.
the base station 1 configures downlink radio resources and transmits the downlink V2X message to all UEs within the coverage of the base station 1.
the base station 1 transmits the downlink V2X message to users within its coverage via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 903 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 903 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 903 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 903 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
the base station 1 transmits V2X radio configuration information to the base station 2.
the base station 1 and the base station 2 belong to different operators, e.g. base station 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 are adjacent base stations.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
the base station 1 receives the uplink V2X message of the user and forwards the uplink V2X message to the V2X application layer service module.
the V2X application layer service module generates a downlink V2X message and transmits the downlink V2X message to the base station 1.
the base station 1 knows that there is a base station 2 of operator 2 within its coverage.
the base station 1 needs to inform the UEs of the base station 2 of the V2X radio configuration information.
the information may be transmitted via the control plane or the user plane of the X2 interface.
step 905 the base station 2 transmits the V2X radio configuration information to the UEs within the coverage of the base station 2.
the base station 2 receives from the base station 1 the configuration information of the radio resources allocated by the base station 1 for the downlink V2X message.
the base station 2 transmits the V2X radio configuration information to the UEs via a broadcast manner or a unicast manner.
the radio resource configuration information defines the radio resources configured by the base station 1 of operator 1.
respective UE of operator 2 may receive the downlink V2X message on the corresponding resources at the corresponding time. For example, if the base station 1 and the base station 2 use the same frequency, the UE may receive the downlink V2X message broadcasted by the base station 1 on the corresponding resources at the corresponding time via a TDD manner.
the UE may switch to the frequency of the base station 1 to receive the downlink V2X message at the time of the V2X broadcast; in the case that the UE has the capability of operating on the two frequencies at the same time, the UE may enable the frequency of the base station 1 to receive the downlink V2X message at the time of the V2X broadcast.
FIG. 10 shows embodiment 8 of the present disclosure.
FIG. 10 shows the transmission of V2X radio configuration information between base stations of different operators. Through this method, users of different operators can receive the V2X message, which reduces traffic accident and improves traffic efficiency.
the information may be transmitted via the S1 interface between the base stations.
a UE transmits an uplink V2X message to the base station 1, wherein the base station 1 belongs to operator 1.
step 201 as shown in FIG. 2 may be executed or not, which is not restricted in the present disclosure.
the UE has the V2X capability.
the UE obtains its position and the traffic condition on the road via a sensor.
the UE transmits the above information to the base station 1 via the uplink V2X message.
the base station 1 receives the uplink V2X message and transmits the message to the V2X application layer service module.
the V2X application layer service module is connected with the base station 1. It may be implemented in the base station 1 or implemented as an independent 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, wherein the downlink V2X message is used for informing other users of the traffic condition on the road. Therefore, the downlink V2X message is generally transmitted via a broadcast manner.
step 1002 the V2X application layer service module transmits the downlink V2X message to the base station 1.
the base station 1 configures downlink radio resources and transmits the downlink V2X message to UEs within the coverage of the base station 1.
the base station 1 transmits the downlink V2X message to users within its coverage via a broadcast manner.
the broadcast manner may include a MBSFN manner, or a cell broadcast manner, or broadcasting via a broadcast channel, or other broadcast manners.
the base station 1 may transmit the downlink V2X message via a unicast manner.
Detailed implementation of step 1003 may vary with different manners for transmitting the downlink V2X message. If the downlink V2X message is transmitted via the MBSFN manner or the cell broadcast manner, step 1003 includes: the base station 1 transmits radio resource configuration information for the MBSFN to the UEs and transmits the downlink V2X message on the resources.
step 1003 includes: the base station 1 directly transmits the downlink V2X message to the UEs via a newly-defined broadcast message. If the downlink V2X message is transmitted via other broadcast manners or the unicast manner, step 1003 may include configuring the radio resources for the broadcast or the unicast and transmitting the downlink V2X message on the configured resources.
step 1004 the base station 1 transmits V2X radio configuration information to the base station 2.
the base station 1 and the base station 2 have an overlapped coverage area or are adjacent base stations.
the base station 1 belongs to operator 1 and the base station 2 belongs to operator 2.
the base station 1 receives the uplink V2X message of the user and forwards the message to the V2X application layer service module.
the V2X application layer service module generates a downlink V2X message and transmits the downlink V2X message to the base station 1.
the base station 1 knows that there is a base station 2 of operator 2 within its coverage.
the base station 1 needs to transmit the V2X radio configuration information to UEs of the base station 2.
the base station 1 and the base station 2 does not have an X2 interface.
the base station 1 transmits the V2X radio configuration information to the base station 2 through the S1 interface.
the base station 1 transmits an eNB configuration transfer message including the information of the destination base station and the V2X radio configuration information to the core network.
the core network transmits an MME configuration transfer message including the V2X radio configuration information to the base station 2.
the transmission within the core network may involve two MME nodes.
the MME1 connected with the base station 1 finds the MME2 connected with the base station 2 according to the destination address in the message. Then MME1 transmits the message to the base station 2 via MME2.
step 1005 the base station 2 transmits the V2X radio configuration information to UEs within the coverage of the base station 2.
the base station 2 receives from the base station 1 the configuration information of the radio resources allocated by the base station 1 for the downlink V2X message.
the base station 2 transmits the V2X radio configuration information to the UEs via a broadcast manner or a unicast manner.
the radio resource configuration information defines the radio resources configured by the base station 1 of operator 1.
respective UE of operator 2 may receive the downlink V2X message on the corresponding resources at the corresponding time. For example, if the base station 1 and the base station 2 use the same frequency, the UE may receive the downlink V2X message broadcasted by the base station 1 on the corresponding resources at the corresponding time via a TDD manner.
the UE may switch to the frequency of the base station 1 to receive the downlink V2X message at the time of the V2X broadcast; in the case that the UE has the capability of operating on the two frequencies at the same time, the UE may enable the frequency of the base station 1 to receive the downlink V2X message at the time of the V2X broadcast.
Embodiments of the present disclosure also provide three apparatuses for transmitting V2X message, respectively for implementing the two implementation manners of the first method and the second method as described in the above embodiments.
the apparatus for transmitting V2X message includes: an uplink message receiver, a UE transmitter and a base station transmitter;
the uplink message receiver is configured to receive an uplink V2X message transmitted by the UE;
the UE transmitter is configured to transmit a downlink V2X message which is generated according to the uplink V2X message or configuration information for radio resources allocated by the present base station for the downlink V2X message to a second base station of an operator different from the operator of the present base station, wherein the second base station transmits the downlink V2X message or the configuration information for the radio resources to UEs within its coverage; wherein the configuration information for the radio resources is used by the UEs within the coverage of the second base station to receive the downlink V2X message on the resources indicated by the configuration information.
the apparatus for transmitting V2X message includes: an uplink information receiver, a UE transmitter and a base station transmitter;
the uplink message receiver is configured to receive from a base station connected with the apparatus an uplink V2X message transmitted by a UE within the coverage of the base station;
the UE transmitter is configured to transmit via the base station connected with the apparatus a downlink V2X message which is generated based on the uplink V2X message to UEs within the coverage of the base station;
the base station transmitter is configured to transmit the downlink V2X message to a second base station of another operator, wherein the second base station transmits the downlink V2X message to UEs within its coverage.
the apparatus for transmitting V2X message includes: a configuration information exchanging unit and a V2X configuration information transmitter;
the configuration information exchanging unit is configured to exchange configuration information with a base station of an operator different from the operator of the present base station, the configuration information includes whether the base station has V2X capability and information about frequency which the base station transmits the V2X message;
the V2X configuration information transmitter is configured to transmit, according to the exchanged configuration information, the V2X configuration information to UEs within its coverage, wherein the V2X configuration information includes the information about frequency for V2X message transmission of a base station of another operator, such that the UEs receives the downlink V2X message of the base station of said another operator on the frequency.
the V2X relevant message can be transmitted via the MBMS manner.
Temporary Mobile Group Identity (TMGI) is used for identifying the MBMS service
the TMGI consists of an operator identifier--PLMN (Public Land Mobile Network) ID and a unique identifier within the operator.
PLMN Public Land Mobile Network
the present disclosure provides three methods.
the base station 1 and the base station 2 belong to different operators.
the downlink V2X message needs to be transmitted to the UEs within the coverage of the base station 1 and the base station 2.
the base station 2 does not directly transmit the downlink V2X message to the UEs within its coverage. Instead, the UEs within 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.
the TMGI may be configured as follows to ensure that the UEs within the coverage of the base station 2 can normally perform the downlink V2X message receiving.
Step 1 negotiation is performed between operators of the base station 1 and the base station 2 to generate a TMGI mapping table.
the base station transmits the mapping table to the UEs and the UEs store the mapping table.
the mapping table may include ⁇ V2X service identifier, TMGI-1, TMGI-2 ⁇ , wherein the V2X service identifier is optional, TMGI-1 is a service identifier of the operator 1 that the base station 1 belongs to, and TMGI-2 is a service identifier of the operator 2 that the base station 2 belongs to.
the downlink V2X messages corresponding to the two identifiers are the same downlink V2X message.
Step 2 the base station 1 broadcasts the downlink V2X message via an eMBMS bearer, and identifies the eMBMS bearer by TMGI-1.
Step 3 the base station 1 transmits the V2X configuration information to the base station 2.
the V2X configuration information may include the TMGI-1 used for the base station 1, the V2X radio resource configuration for the base station 1, and the V2X service identifier.
the TMGI-1, the V2X radio resource configuration for the base station 1 (e.g. the radio resource configuration information in the above embodiments 7 and 8) and the V2X service identifier are optional.
the V2X configuration information may be transmitted via various manners, which is not restricted in the present disclosure. For example, the transmission manner for the radio resource configuration information in the foregoing embodiments 7 and 8 may be utilized.
the base station 2 may adopt the following two manners to process the received V2X configuration information.
a first manner if the V2X configuration information does not include the V2X service identifier, the V2X configuration information should include the TMGI-1 and the base station 2 needs to save the mapping table, such that the base station 2 can replace the TMGI-1 with TMGI-2 according to the mapping table and transmit the TMGI-2 to the UEs.
the second manner if the V2X configuration information includes the V2X service identifier, the V2X configuration information may not include the TMGI-1, and the base station 2 may not save the mapping table and can directly transmit the V2X configuration information to the UEs.
the V2X configuration information does not include the V2X service identifier
the UEs receive the TMGI-2 and know that the TMGI-2 identifies a V2X service to be received by the UEs.
the UEs are able to know that the base station 1 is broadcasting on the eMBMS bearer identified by TMGI-1.
the UE may receive the data in the eMBMS bearer identified by the TMGI-1 via a TDD manner, so as to receive the downlink V2X message transmitted on the eMBMS bearer.
the UEs are able to directly receive on the resources indicated by the configuration information, the processing is not complicated. If the V2X configuration information does not include the radio resource configuration information for the base station 1, the UEs obtain the downlink V2X message on the eMBMS bearer identified by the TMGI-1 through receiving an eMBMS control message and user data transmitted by the base station 1.
the V2X configuration information includes the V2X service identifier.
the UEs receive the V2X service identifier and know according to the mapping relationship between the V2X service identifier and the TMGI-1 in the mapping table that the base station 1 is broadcasting on the eMBMS bearer identified by TMGI-1.
the UEs may receive the data on the eMBMS bearer identified by TMGI-1 from the base station 1 in a TDD manner, so as to receive the downlink V2X message transmitted on the eMBMS bearer.
the V2X configuration information includes the radio resource configuration information for the base station 1, the UEs may directly receive on the resources indicated by the configuration information, the processing is not complicated.
the UEs obtain the downlink V2X message on the eMBMS bearer identified by the TMGI-1 through receiving an eMBMS control message and user data transmitted by the base station 1.
the processing includes:
Step 1 a UE within the coverage of the base station 2 receives via the base station 2 the V2X configuration information transmitted by the base station 1.
the V2X configuration information may include the TMGI-1 identifying the eMBMS bearer of the base station 1 and/or the V2X service identifier. If the V2X configuration information does not include the V2X service identifier, the base station 2 needs to save the mapping table. During the forwarding of the base station 2, the TMGI-1 is replaced by the TMGI-2 used by the base station 2 according to the mapping table.
the base station 2 may not save the mapping table and may directly transmit the V2X configuration information to the UEs.
Step 2 the UE determines, according to the received V2X configuration information and a local mapping table, that the base station 1 is broadcasting a downlink V2X message on the eMBMS bearer identified by the TMGI-1, and receives the downlink V2X message transmitted on the eMBMS bearer.
the mapping table includes the mapping relationship between the V2X configuration information and the TMGI.
the base station 1 and the base station 2 belong to different operators and the downlink V2X message needs to be transmitted to the UEs in the coverage of the base station 1 and the base station 2.
the base station 2 also needs to transmit the downlink V2X message.
a TMGI configuration may be performed according to the following method, so as to ensure that the UEs within the coverage of the base station 2 can receive the downlink V2X message normally.
Step 1 a negotiation is performed between operators of the base station 1 and the base station 2 to generate a TMGI mapping table.
the mapping table is transmitted to a designated node of operator 1 that the base station 1 belongs to and a designated node of operator 2 that the base station 2 belongs to.
the designated node may be a node of the access network or a node of the core network.
the mapping table may be transmitted to the base station 1 and the base station 2, or transmitted to BMSC, MBMS-GW and MCE in the eMBMS architecture.
the mapping table may include ⁇ V2X service identifier, TMGI-1, TMGI-2 ⁇ , wherein the V2X service identifier is optional, TMGI-1 is a service identifier of the operator 1 that the base station 1 belongs to, and TMGI-2 is a service identifier of the operator 2 that the base station 2 belongs to.
the downlink V2X messages corresponding to the two identifiers are the same downlink V2X message.
Step 2 the base station 1 broadcasts a downlink V2X message via an eMBMS bearer, and identifies the eMBMS bearer by TMGI-1.
Step 3 the base station 1 transmits the downlink V2X message to the base station 2.
the node which receives the mapping table replaces the TMGI-1 before forwarding the downlink V2X message.
the base station 1 may transmit the downlink V2X message to the base station 2 via various manners, e.g., the downlink V2X message transmission manners provided in the above embodiments.
the node receiving the mapping table replaces the TMGI identifying the eMBMS bearer for the message. In particular, it replaces the TMGI-1 by the TMGI-2 according to the saved mapping table.
the MBMS-GW of operator 2 receives the session start message transmitted by the BMSC of operator 1
the MBMS-GW replaces the TMGI-1 by the TMGI-2 and then transmits the message to a next node.
the base station 2 of operator 2 receives the session start message transmitted by the MCE of operator 1.
the base station 2 replaces the TMGI-1 by the TMGI-2 and then transmits the message to the next node.
the downlink V2X message can be transmitted to the base station 2, and the eMBMS bearer identifier has been changed to the TMGI-2.
the base station 2 can allocate radio resources for the downlink V2X message and identifies the corresponding eMBMS bearer by the TMGI-2. Since the TMGI has been changed to the TMGI-2 supported by the base station 2, the UEs within the coverage of the base station 2 can receive the downlink V2X message normally.
the processing includes the following.
Step 1 the designated node X of the operator that the base station 1 or the base station 2 belongs to receives a downlink V2X message transmitted from the base station 1 to the base station 2.
the designated node X is an eMBMS forwarding node of the operator of the base station 1 for transmitting the V2X message to the base station 2.
the base station 1 broadcasts the downlink V2X message via an eMBMS bearer.
Step 2 the designated node X replaces the TMGI-1 with which the base station 1 identifies the eMBMS bearer by the TMGI-2 used by the base station 2 according to a local mapping table, such that the UEs within the coverage of the base station 2 receive the downlink V2X message broadcasted by the base station 2.
the mapping table includes a mapping relationship between the TMGI of operator 1 and that of operator 2.
the designated node X may be an eMBMS forwarding node of operator 1 or a forwarding node of operator 2.
the eMBMS forwarding node X replaces the TMGI-1 of the eMBMS bearer of operator 1 by the TMGI-2 used by the base station 2.
Step 3 the designated node X transmits the downlink V2X message to a next node after the replacement.
a dedicated TMGI is allocated for the V2X. This TMGI does not include an operator identifier. For the same V2X service, all operators use the same dedicated TMGI. Thus, the UEs are able to recognize the corresponding downlink V2X message via the identifier of the eMBMS bearer.
the processing includes the following.
Step 1 the base station receives an uplink V2X message reported by the UE.
Step 2 the base station broadcasts a downlink V2X message generated based on the uplink V2X message; wherein the downlink V2X message is broadcasted via an eMBMS bearer identified by the dedicated TMGI.
the dedicated TMGI does not include the operator identifier and is allocated for the V2X in advance. For the same V2X service, all operators use the same dedicated TMGI.
the present disclosure provides corresponding apparatuses.
an apparatus for receiving the V2X message includes: a configuration information receiver and a V2X receiver;
the configuration information receiver is configured to receive, via a second base station, V2X configuration information transmitted by a first base station; wherein the first base station broadcasts a downlink V2X message via an eMBMS bearer, the second base station belongs to an operator different from that of the first base station;
the V2X receiver is configured to determine, according to the received V2X configuration information and a local mapping table, that the first base station is broadcasting a downlink V2X message on the eMBMS bearer identified by a TMGI used by the operator of the first base station, and receive the downlink V2X message transmitted on the eMBMS bearer; wherein the mapping table includes a mapping relationship between the V2X configuration information and the TMGI.
inventions of the present disclosure provide an apparatus for transmitting V2X message, applied in the designated node.
the apparatus includes: a V2X receiver, a TMGI replacing unit and a V2X transmitter;
the V2X receiver is configured to receive a downlink V2X message transmitted by a first base station to a second base station; wherein the first base station broadcasts the downlink V2X message via an eMBMS bearer, the first base station and the second base station belong to different operators;
the TMGI replacing unit is configured to replace a TMGI-1 identifying the eMBMS bearer by the first base station with a TMGI-2 used by the second base station according to a local mapping table, such that UEs within the coverage of the second base station receive the downlink V2X message broadcasted by the second base station; wherein the mapping table includes a mapping relationship between the TMGI-1 of the operator of the first base station and the TMGI-2 of the operator of the second base station; and
the V2X transmitter is configured to transmit the downlink V2X message after the replacement.
embodiments of the present disclosure provide an apparatus for transmitting V2X message, including a receiver and a broadcasting unit;
the receiver is configured to receive an uplink V2X message reported by a UE.
the broadcasting unit is configured to broadcast a downlink V2X message generated according to the uplink V2X message; wherein the downlink V2X message is broadcasted on an eMBMS bearer identified by a dedicated TMGI, the dedicated TMGI is allocated for the V2X in advance and does not include an operator identifier, for the same V2X service, all operators use the same dedicated TMGI.
the controller may be a circuit, an application-specific integrated circuit or at least one processor.

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Mobile Radio Communication Systems (AREA)

PCT/KR2017/000275 2016-01-13 2017-01-09 Method and apparatus for transmitting v2x message WO2017122976A1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CN201610021959.2		2016-01-13
CN201610021959.2A CN106973356B (zh)	2016-01-13	2016-01-13	传输v2x消息的方法和装置

Publications (1)

Publication Number	Publication Date
WO2017122976A1 true WO2017122976A1 (en)	2017-07-20

Family

ID=59311297

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
PCT/KR2017/000275 WO2017122976A1 (en)	2016-01-13	2017-01-09	Method and apparatus for transmitting v2x message

Country Status (2)

Country	Link
CN (1)	CN106973356B (zh)
WO (1)	WO2017122976A1 (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110169160A (zh) *	2017-09-14	2019-08-23	Lg电子株式会社	用于在无线通信***中执行v2x通信的方法及其设备
US10490075B2 (en)	2017-11-27	2019-11-26	Honda Motor Co., Ltd.	System and method for providing road user related data based on vehicle communications
WO2020092345A1 (en) *	2018-11-02	2020-05-07	Intel Corporation	Nr v2x communications using sidelink bandwidth parts
CN111373771A (zh) *	2017-11-15	2020-07-03	诺基亚技术有限公司	车辆消息传递
US11089625B2 (en)	2018-05-25	2021-08-10	Futurewei Technologies, Inc.	Protection for mode-3 V2X UEs in the ITS band
US11147112B2 (en) *	2018-03-09	2021-10-12	Qualcomm Incorporated	EV2X mode 3 operation based on eNB tunneling
US11367356B1 (en)	2020-03-16	2022-06-21	Wells Fargo Bank, N.A.	Autonomous fleet service management
US11682057B1 (en)	2021-01-05	2023-06-20	Wells Fargo Bank, N.A.	Management system to facilitate vehicle-to-everything (V2X) negotiation and payment

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN109996207B (zh) *	2017-12-29	2021-01-29	华为技术有限公司	一种数据发送方法、装置以及计算机程序产品
CN110475225B (zh) *	2018-05-10	2021-05-14	华为技术有限公司	一种发送消息的方法及相关设备
CN111132312B (zh) *	2018-10-30	2022-05-17	大唐移动通信设备有限公司	一种资源分配方法和装置
EP3923606B1 (en) *	2019-02-14	2023-09-13	Guangdong Oppo Mobile Telecommunications Corp., Ltd.	Connection management methods and apparatus
CN110972204B (zh) *	2019-11-27	2023-01-13	达闼机器人股份有限公司	资源配置的方法、装置、存储介质及网络设备和终端
WO2022067467A1 (en) *	2020-09-29	2022-04-07	Qualcomm Incorporated	Preprocessing operations for sensor data

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20120134336A1 (en) *	2009-04-01	2012-05-31	Fujitsu Limited	Mobile station communication device, inter-mobile station communication system, and inter-mobile station communication method
WO2014173429A1 (en) *	2013-04-22	2014-10-30	Telefonaktiebolaget L M Ericsson (Publ)	Cellular network control of channel allocation for vehicle-to-vehicle communication

2016
- 2016-01-13 CN CN201610021959.2A patent/CN106973356B/zh active Active
2017
- 2017-01-09 WO PCT/KR2017/000275 patent/WO2017122976A1/en active Application Filing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20120134336A1 (en) *	2009-04-01	2012-05-31	Fujitsu Limited	Mobile station communication device, inter-mobile station communication system, and inter-mobile station communication method
WO2014173429A1 (en) *	2013-04-22	2014-10-30	Telefonaktiebolaget L M Ericsson (Publ)	Cellular network control of channel allocation for vehicle-to-vehicle communication

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"3GPP; TSGSSA; Study on architecture enhancements to supoort Group Communication System Enablers for LTE(GCSE_LTE) (Release 12", 3GPP TR 23.768, 24 June 2014 (2014-06-24), XP055400688 *
LG ELECTRONICS: "Key issues for V2I", 3GPP SA WG2 MEETING #112 S1-153893, 12 November 2015 (2015-11-12), pages 2 - 153893, XP051035470 *
NGOC-DUY NGUYEN ET AL.: "Service Continuity for eMBMS in LTE/LTE-Advanced Network: Standard Analysis and Supplement", CONSUMER COMMUNICATIONS AND NETWORKING CONFERENCE(CCNC) , 2014 IEEE 11TH, 28 July 2014 (2014-07-28), XP032626126, Retrieved from the Internet <URL:http://www.eurecom.fr/fr/publication/4193/download/cm-publi-41d3.pdf> *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN110169160A (zh) *	2017-09-14	2019-08-23	Lg电子株式会社	用于在无线通信***中执行v2x通信的方法及其设备
CN110169160B (zh) *	2017-09-14	2022-07-29	Lg电子株式会社	用于在无线通信***中执行v2x通信的方法及其设备
CN111373771A (zh) *	2017-11-15	2020-07-03	诺基亚技术有限公司	车辆消息传递
CN111373771B (zh) *	2017-11-15	2023-03-31	诺基亚技术有限公司	车辆消息传递
US10490075B2 (en)	2017-11-27	2019-11-26	Honda Motor Co., Ltd.	System and method for providing road user related data based on vehicle communications
US11147112B2 (en) *	2018-03-09	2021-10-12	Qualcomm Incorporated	EV2X mode 3 operation based on eNB tunneling
US11089625B2 (en)	2018-05-25	2021-08-10	Futurewei Technologies, Inc.	Protection for mode-3 V2X UEs in the ITS band
WO2020092345A1 (en) *	2018-11-02	2020-05-07	Intel Corporation	Nr v2x communications using sidelink bandwidth parts
US11546743B2 (en)	2018-11-02	2023-01-03	Intel Corporation	NR V2X communications using sidelink bandwidth parts
US11367356B1 (en)	2020-03-16	2022-06-21	Wells Fargo Bank, N.A.	Autonomous fleet service management
US11682057B1 (en)	2021-01-05	2023-06-20	Wells Fargo Bank, N.A.	Management system to facilitate vehicle-to-everything (V2X) negotiation and payment

Also Published As

Publication number	Publication date
CN106973356A (zh)	2017-07-21
CN106973356B (zh)	2021-08-24

Legal Events

Date

Code

Title

Description

2017-09-13

121

Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17738605

Country of ref document: EP

Kind code of ref document: A1

2018-07-14

NENP

Non-entry into the national phase

Ref country code: DE

2019-02-06

122

Ep: pct application non-entry in european phase