WO2017049976A1 - 车联网业务的发送方法及装置、资源配置方法及装置 - Google Patents
车联网业务的发送方法及装置、资源配置方法及装置 Download PDFInfo
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- WO2017049976A1 WO2017049976A1 PCT/CN2016/087245 CN2016087245W WO2017049976A1 WO 2017049976 A1 WO2017049976 A1 WO 2017049976A1 CN 2016087245 W CN2016087245 W CN 2016087245W WO 2017049976 A1 WO2017049976 A1 WO 2017049976A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
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- 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]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
Definitions
- the present invention relates to the field of communications, and in particular to a method and device for transmitting a car network service, and a resource configuration method and device.
- the technologies to improve vehicle safety are mainly divided into passive safety technology and active safety technology.
- Passive safety technology is used to protect people inside and outside the vehicle after accidents.
- Active safety technology is used to prevent and reduce accidents in vehicles and avoid injuries.
- Active safety technology is the focus of modern vehicle safety technology development. And trends.
- the communication-based collision warning system realizes real-time information interaction between the vehicle, the vehicle and the roadside infrastructure by using advanced wireless communication technology and a new generation of information processing technology, and informs each other of the current state (including the position and speed of the vehicle). Acceleration, driving route) and learned road environment information, collaboratively aware of road hazard conditions, timely providing a variety of collision warning information to prevent road traffic safety accidents, and become a new way for countries to solve road traffic safety problems. .
- V2X Vehicle to Everything
- V2X Vehicle to Everything
- V2V Vehicles and vehicles
- V2V Vehicle to Pedestrian
- V2I Vehicle to Infrastructure
- FIG. 1 is a schematic diagram of sending traffic and scheduling information to a vehicle through a network information platform in the related art.
- LTE Long Time Evolution
- the Road Side Unit can receive vehicle requests and ensure that the vehicle has access to the Internet with a gateway function. In addition, it also has the functions of data calculation, storage and forwarding.
- V2R vehicle to road side unit
- V2I vehicle to road side unit
- the RSU can quickly receive detected vehicles, traffic lights and some road condition information, and process, reorder, and select the information before sending it to the vehicle.
- connection with the RSU ensures that the vehicle can access the Internet reliably or in real time or download data stored by the RSU.
- the D2D communication includes the UE being located in the LTE coverage or the LTE out-of-coverage scenario, and the D2D includes the discovery and communication.
- the UE participating in the D2D may schedule resources through the base station eNB or select a resource to send data in the resource pool.
- the D2D communication data is transmitted 4 times, that is, the same data is sent 4 times, and the Incremental Redundancy (IR) is used.
- the receiving UE combines 4 times of data to obtain reliability.
- the D2D communication includes a resource scheduling SA and a service data transmission, where the resource scheduling indicates resource configuration of the service data, and the resource scheduling is fixedly sent twice.
- the D2D discovery or communication adopts the LTE Physical Uplink Shared Channel (PUSCH) resource, and adopts a Single-Arrival Frequent-Division Multiple Access (SC-FDMA) method.
- PUSCH Physical Uplink Shared Channel
- SC-FDMA Single-Arrival Frequent-Division Multiple Access
- D2D technology is used for low-speed, small-scale UE scenarios, so resource scheduling information and service data are sent separately, scheduling information is sent twice, and communication data is sent 4 times;
- LTE V2X for high-speed, large-scale UE scenarios, D2D technology in the related art is difficult to meet its requirements.
- the embodiment of the invention provides a method and a device for transmitting a networked service, a resource configuration method and a device, and at least solves the problem that the D2D technology in the related art can only separately send resource scheduling information and service data points.
- a method for transmitting a car network service including: a first onboard unit OBU acquiring a transmission resource for transmitting a car network V2X service, wherein the sending resource includes: transmitting a V2X service
- the V2X service data and the resources required for the scheduling information, the scheduling information is used to indicate information required for resource scheduling of the V2X service data; the first OBU is sent to the second OBU on the sending resource.
- the scheduling information and the V2X service data; wherein the scheduling information and the V2X service data are frequency domain multiplexed in a same subframe in a transmission resource, where the scheduling information indicates the same and/or different subframes Perform resource configuration on the V2X service data.
- the sending, by the first onboard unit OBU, the sending resource for sending the car network V2X service includes: sending, by the first OBU, the RSU Used to request the hair a request message for sending a resource; the first OBU receives resource configuration information of the sending resource that is sent by the RSU in response to the request message; or a first sending resource that is configured by the first OBU from the RSU
- the sending resource is obtained in the pool; wherein the sending resource indicates the scheduling information and the resources required for the V2X service data, and the number of times the scheduling information and the V2X service data are sent in one resource period.
- the scheduling information and the V2X service data sent by the first OBU are detected by the second OBU according to the pre-configured receiving resource pool. And receiving, wherein, after receiving the scheduling information and the V2X service data sent by the first OBU, the second OBU merges the received V2X services multiple times according to a predefined rule.
- the first onboard unit OBU acquiring the transmission resource for sending the Internet of Things V2X service includes: the first OBU is pre-configured in the Selecting the transmission resource from a second transmission resource pool for storing the transmission resource in the OBU; wherein the transmission resource indicates the scheduling information and resources required by the V2X service data, and the scheduling Information and the number of times the V2X service data is sent in one resource period.
- the scheduling information and the V2X service data sent by the first OBU are detected by the second OBU according to the pre-configured receiving resource pool. And receiving, wherein, after receiving the scheduling information and the V2X service data sent by the first OBU, the second OBU merges the received V2X services multiple times according to a predefined rule.
- the sending resource further includes at least one of the following: the number of times of sending the V2X service, the resource period, and the scheduling period of the semi-persistent scheduling SPS.
- the resource of the scheduling information includes: a time-frequency resource of the scheduling information
- the resource of the V2X service data includes: a time-frequency resource of the V2X service data, and an MCS of the V2X service data.
- the scheduling information includes: a time-frequency location of the V2X service, an MCS of the V2X service data, and an identifier of the second OBU;
- the V2X service data includes at least one of: a vehicle-to-vehicle V2V Business, vehicle-to-infrastructure V2I service, vehicle-to-pedestrian V2P service or vehicle-to-network V2N service.
- the method further includes: before the scheduling information is the dynamic scheduling information, before the first OBU sends the scheduling information and the V2X service data to the second OBU on the sending resource, the method further includes: When the V2X service occupies only one subframe, the first OBU configures the scheduling information in a subframe in which the V2X service data is located; or, when the V2X service occupies multiple subframes, The first OBU configures the scheduling information in the first or multiple subframes of the V2X service data.
- the sending, by the first OBU, the scheduling information and the V2X service data to the second OBU on the sending resource includes: The first OBU indicates, in a first scheduling period of the scheduling information of the SPS, that the scheduling information of the SPS and the V2X service data are sent to the second OBU; and after the first scheduling period, according to the first scheduling period The transmission resource indicated in the first scheduling period sends V2X service data.
- a resource configuration method for a vehicle networking service including: a roadside unit RSU configuring a transmission resource pool of a vehicle networking V2X service and resource configuration information of a receiving resource pool;
- the onboard unit OBU configures the resource configuration information.
- the RSU configuring the resource configuration information to the onboard unit OBU includes: the RSU receiving a request message sent by the OBU for requesting the sending resource; The RSU sends resource configuration information of the transmission resource in response to the request message to the OBU.
- the sending resource includes: a resource required to send V2X service data and scheduling information in the V2X service, where the scheduling information is used to indicate information required for resource scheduling of the V2X service data.
- the sending resource indicates the scheduling information and the resources required by the V2X service data, and the scheduling information and the number of times the V2X service data is sent in one resource period.
- a device for transmitting a car network service which is applied to an OCU side of a first onboard unit, and includes: an obtaining module configured to acquire a transmission resource for transmitting a V2X service of the car network, wherein
- the transmission resource includes: a resource required for transmitting V2X service data and scheduling information in the V2X service, where the scheduling information is used to indicate information required for resource scheduling of the V2X service data; Transmitting the scheduling information and the V2X service data to the second OBU on the sending resource, where the scheduling information and the V2X service data are frequency domain multiplexed in the same subframe in the sending resource, where
- the scheduling information indicates resource configuration of the V2X service data in the same and/or different subframes.
- the acquiring module when the first OBU is in the coverage of the roadside unit RSU, includes: a first sending unit, configured to send a request message for requesting the sending resource to the RSU; a receiving unit, configured to receive resource configuration information of the sending resource that is sent by the RSU in response to the request message; or, an acquiring unit, configured to obtain the first sending resource pool that is pre-configured by the RSU Transmitting a resource; wherein the sending resource indicates the scheduling information and the resources required for the V2X service data, and the number of times the scheduling information and the V2X service data are sent in one resource period.
- the scheduling information and service data sent by the first OBU are detected by the second OBU in a receiving resource pool configured according to the RSU.
- the second OBU merges the received V2X services multiple times according to a predefined rule.
- the acquiring module includes: a selecting unit, configured to be configured from a second pre-configured in the OBU for storing the sending resource Selecting the sending resource in the resource pool; wherein the sending resource indicates the scheduling information and the resource required by the V2X service data, and the scheduling information and the number of times the V2X service data is sent in one resource period .
- the scheduling information and the V2X service data sent by the first OBU are performed by the second OBU according to the preconfigured receiving resource pool.
- the second OBU is based on the pre- The defined rules combine multiple received V2X services.
- the sending resource further includes at least one of the following: the number of times of sending the V2X service, the resource period, and the scheduling period of the semi-persistent scheduling SPS.
- the resource of the scheduling information includes: a time-frequency resource of the scheduling information
- the resource of the V2X service data includes: a time-frequency resource of the V2X service data, and an MCS of the V2X service data.
- the scheduling information includes: a time-frequency location of the V2X service, an MCS of the V2X service data, and an identifier of the second OBU;
- the V2X service data includes at least one of: a vehicle-to-vehicle V2V Business, vehicle-to-infrastructure V2I service, vehicle-to-pedestrian V2P service or vehicle-to-network V2N service.
- the device before the scheduling information is the dynamic scheduling information, before the first OBU sends the scheduling information and the V2X service data to the second OBU on the sending resource, the device further includes: a first configuration module, configured to: when the V2X service occupies only one subframe, configure the scheduling information in a subframe in which the V2X service data is located; or, the second configuration module is configured to be in the When the V2X service occupies multiple subframes, the scheduling information is configured in the first or multiple subframes of the V2X service data.
- a first configuration module configured to: when the V2X service occupies only one subframe, configure the scheduling information in a subframe in which the V2X service data is located; or, the second configuration module is configured to be in the When the V2X service occupies multiple subframes, the scheduling information is configured in the first or multiple subframes of the V2X service data.
- the first sending module includes: an indicating unit, configured to indicate to the first scheduling period of the scheduling information of the SPS
- the second OBU sends the scheduling information of the SPS and the V2X service data
- the second sending unit is configured to send, according to the sending resource indicated in the first scheduling period, after the first scheduling period.
- V2X business data when the scheduling information is semi-persistent scheduling SPS type scheduling information, the first sending module includes: an indicating unit, configured to indicate to the first scheduling period of the scheduling information of the SPS
- the second OBU sends the scheduling information of the SPS and the V2X service data, and the second sending unit is configured to send, according to the sending resource indicated in the first scheduling period, after the first scheduling period.
- a resource configuration apparatus for a vehicle networking service which is applied to a roadside unit RSU side, and includes: a third configuration module, configured to configure a transmission resource pool and receive of a vehicle network V2X service.
- the resource configuration information of the resource pool; the fourth configuration module is configured to configure the resource configuration information to the onboard unit OBU.
- the fourth configuration module includes: a second receiving unit, configured to receive a request message sent by the OBU for requesting the sending resource; and a third sending unit, configured to send, to the OBU, the response Resource configuration information of the transmission resource of the request message.
- the sending resource includes: a resource required to send V2X service data and scheduling information in the V2X service, where the scheduling information is used to indicate information required for resource scheduling of the V2X service data.
- the sending resource indicates the scheduling information and the resources required by the V2X service data, and the scheduling information and the number of times the V2X service data is sent in one resource period.
- the first onboard unit OBU is used to acquire the transmission resource for transmitting the V2X service of the vehicle network
- the transmission resource includes: the resource required for transmitting the V2X service data and the scheduling information in the V2X service, and the scheduling information is used for The information required for the resource scheduling of the V2X service data is instructed, and the scheduling information and the V2X service data are sent to the second OBU on the sending resource by the first OBU, that is, the scheduling information and the V2X service data can be simultaneously sent through the obtained sending resource.
- FIG. 1 is a schematic diagram of sending traffic and scheduling information to a vehicle through a network information platform in the related art
- FIG. 2 is a schematic diagram of device-to-device D2D communication in the related art 3GPP;
- FIG. 3 is a flowchart of a method for transmitting car network service data according to an embodiment of the present invention
- FIG. 4 is a flowchart of a resource configuration method of a vehicle networking service according to an embodiment of the present invention
- FIG. 5 is a structural block diagram of a device for transmitting a car network service according to an embodiment of the present invention.
- FIG. 6 is a structural block diagram of a resource configuration apparatus for a vehicle networking service according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram of V2X scheduling information according to an alternative embodiment of the present invention.
- FIG. 8 is a schematic diagram of SPS scheduling according to an alternative embodiment of the present invention.
- FIG. 9 is a flow chart of a method in accordance with an alternative embodiment of the present invention.
- FIG. 10 is a flow chart of a method according to an alternative embodiment 2 of the present invention.
- Figure 11 is a flow chart of a method according to an alternative embodiment of the present invention.
- Figure 12 is a flow chart of a method in accordance with an alternative embodiment of the present invention.
- FIG. 13 is a structural block diagram of an apparatus for transmitting a V2X service according to an alternative embodiment 5 of the present invention.
- FIG. 14 is a structural block diagram of an apparatus for transmitting a V2X service according to an alternative embodiment of the present invention.
- FIG. 3 is a flowchart of a method for transmitting car network service data according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
- Step S302 The first onboard unit OBU acquires a transmission resource for transmitting the vehicle network V2X service, where the transmission resource includes: a resource required for transmitting V2X service data and scheduling information in the V2X service, and the scheduling information is used to indicate the pair. Information required for resource scheduling by V2X service data;
- Step S304 The first OBU sends scheduling information and V2X service data to the second OBU on the sending resource.
- the scheduling information and the V2X service data are frequency domain multiplexed in the same subframe in the sending resource, and the scheduling information indicates that resource configuration is performed on the V2X service data in the same and/or different subframes.
- the first onboard unit OBU is used to acquire the transmission resource for transmitting the vehicle network V2X service, and the transmission resource includes: required for transmitting the V2X service data and scheduling information in the V2X service.
- the resource, the scheduling information is used to indicate the information required for the resource scheduling of the V2X service data, and the first OBU sends the scheduling information and the V2X service data to the second OBU on the sending resource, which can be obtained by using the embodiment.
- the transmission resource simultaneously transmits the scheduling information and the V2X service data, and solves the problem that the D2D technology in the related art can only separately transmit the resource scheduling information and the V2X service data, and fills in the gap of the related technology.
- the first onboard unit OBU involved in step S302 in the embodiment is used to send the vehicle network V2X.
- the way the service sends resources can be implemented as follows:
- Step S11 The first OBU sends a request message for requesting to send a resource to the RSU.
- Step S12 The first OBU receives resource configuration information of the sending resource that the RSU sends in response to the request message.
- the first OBU obtains the sending resource from the first sending resource pool pre-configured by the RSU, where the resource indicating the scheduling information and the V2X service data is sent, and the scheduling information and the V2X service data are in one resource period. The number of transmissions.
- the number of transmissions may be determined according to the vehicle density, the channel quality of the PC5 interface, the operator policy, and the like. Generally, it is 1-4 times, that is, 0-3 retransmissions, and retransmission uses incremental redundancy, that is, each retransmission is different from the first transmission. If the vehicle density is low and the PC5 quality is poor, select a larger number of times.
- the scheduling information and the service data sent by the first OBU are received by the second OBU after being detected according to the receiving resource pool configured by the RSU.
- the second OBU merges the received V2X services multiple times according to the predefined rules.
- the pre-defined rule is: the first OBU sends the V2X scheduling information and the service data in an incremental redundancy manner, where the incremental redundancy transmission version is sent in the order of 0, 2, 3, 1 if the second OBU is If the decoding is successful, the subsequent retransmission version does not need to be continued. If the first failure occurs, the subsequent version and the first version are merged until the decoding is successful.
- the first OBU involved in step S302 of this embodiment acquires the sending for sending the vehicle network V2X service.
- the manner of the resource may be implemented by the first OBU from the second sending resource pre-configured in the OBU for storing the sending resource.
- the sending resource is selected in the source pool; wherein the sending resource indicates the scheduling information and the resources required for the V2X service data, and the scheduling information and the number of times the V2X service data is sent in one resource period.
- the scheduling information and the service data sent by the first OBU are received by the second element OBU after being detected according to the receiving resource pool configured by the RSU.
- the second OBU merges the received V2X services multiple times according to the predefined rules.
- the transmission resource involved in this embodiment may further include at least one of the following: the number of transmissions of the V2X service, the resource period, and the scheduling period of the semi-persistent scheduling SPS.
- the resource of the scheduling information may include: a time-frequency resource of the scheduling information;
- the resource of the V2X service data includes: a time-frequency resource of the V2X service data, and an MCS of the V2X service data.
- the resource period uses different period values according to different V2X service requirements.
- the scheduling information may include: a time-frequency location of the V2X service, an MCS of the V2X service data, and an identifier of the second OBU;
- the V2X service data includes at least one of the following: a vehicle-to-vehicle V2V service, a vehicle-to-infrastructure V2I service, and a vehicle. To pedestrian V2P business or vehicle to network V2N business.
- the method in this embodiment further Can include:
- Step S21 When the V2X service occupies only one subframe, the first OBU configures scheduling information in a subframe in which each V2X service data is located; or
- Step S22 When the V2X service occupies multiple subframes, the first OBU configures scheduling information in the first or multiple subframes of the V2X service data.
- the manner in which the first OBU involved in the step S204 in the embodiment sends the scheduling information and the V2X service data to the second OBU on the sending resource may be as follows: Implementation: the first OBU instructs to send SPS scheduling information and V2X service data to the second OBU in the first scheduling period of the SPS scheduling information; and after the first scheduling period, according to the indication in the first scheduling period
- the sending resource sends V2X business data.
- FIG. 4 is a flowchart of a resource configuration method for a car networking service according to an embodiment of the present invention. As shown in FIG. 4, the steps of the method include:
- Step S402 The roadside unit RSU configures resource configuration information of the sending resource pool and the receiving resource pool of the vehicle network V2X service;
- Step S404 The RSU configures resource configuration information to the onboard unit OBU.
- the manner in which the RSU allocates resource configuration information to the onboard unit OBU when the OBU involved in the step S304 in the embodiment is in the RSU coverage manner can be implemented as follows:
- Step S31 The RSU receives a request message for requesting to send a resource sent by the first OBU.
- Step S32 The RSU sends resource configuration information of the transmission resource in response to the request message to the first OBU.
- the transmission resources involved in the embodiment include: resources required for transmitting V2X service data and scheduling information in the V2X service, and the scheduling information is used to indicate information required for resource scheduling of the V2X service data.
- the sending resource indicates the scheduling information and the resources required for the V2X service data, and the number of times the scheduling information and the V2X service data are sent in one resource period.
- the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
- the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.
- a device for transmitting the service data of the car network is further provided, and the device is used to implement the above-mentioned embodiments and the preferred embodiments, and details are not described herein.
- the term "module” may implement a combination of software and/or hardware of a predetermined function.
- the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
- FIG. 5 is a structural block diagram of a device for transmitting a car network service according to an embodiment of the present invention.
- the device is applied to the OBU side of the first onboard unit.
- the device includes: an obtaining module 52 configured to acquire for sending The transmission resource of the vehicle network V2X service, where the transmission resource includes: a resource required for transmitting V2X service data and scheduling information in the V2X service, and the scheduling information is used to indicate information required for resource scheduling of the V2X service data;
- the module 54 is coupled to the acquisition module 52 and configured to send scheduling information and V2X service data to the second OBU on the sending resource.
- the scheduling information and the V2X service data are frequency domain multiplexed in the same subframe in the sending resource.
- the scheduling information indicates resource configuration for V2X traffic data in the same and/or different subframes.
- the acquiring module 42 includes: a first sending unit, configured to send a request message for requesting to send a resource to the RSU; and the first receiving unit is configured to Receiving resource configuration information of the sending resource that is sent by the RSU in response to the request message; or, the acquiring unit is configured to acquire the sending resource from the first sending resource pool pre-configured by the RSU; where the sending resource indicates the scheduling information and the V2X service data required The resources, as well as the number of times the scheduling information and V2X service data are sent in one resource period.
- the scheduling information and the service data sent by the first OBU are received by the second OBU after detecting the receiving resource pool configured according to the RSU, where After receiving the scheduling information and the V2X service data sent by the first OBU, the second OBU merges the received V2X services multiple times according to the predefined rules.
- the acquiring module 42 includes: a selecting unit, configured to select a sending resource from a second resource pool pre-configured in the OBU for storing the sending resource.
- sending funds The source indicates the scheduling information and the resources required for the V2X service data, and the number of times the scheduling information and the V2X service data are transmitted in one resource period.
- the scheduling information and the V2X service data sent by the first OBU are received by the second OBU after being detected according to the RSU pre-configured receiving resource pool, where After receiving the scheduling information and the service data sent by the first OBU, the second OBU merges the received V2X services multiple times according to the predefined rules.
- the transmission resource involved in this embodiment may further include at least one of the following: the number of transmissions of the V2X service, the resource period, and the scheduling period of the semi-persistent scheduling SPS.
- the resource of the scheduling information may further include: a time-frequency resource of the scheduling information; the resource of the V2X service data includes: a time-frequency resource of the V2X service data, and an MCS of the V2X service data. And the scheduling information may further include: a time-frequency location of the V2X service, an MCS of the V2X service data, and an identifier of the second OBU; and the V2X service data includes at least one of the following: a vehicle-to-vehicle V2V service, a vehicle-to-infrastructure V2I service, Vehicle to pedestrian V2P service or vehicle to network V2N service.
- the device before the scheduling information is the dynamic scheduling information, before the first OBU sends the scheduling information and the V2X service data to the second OBU on the sending resource, the device further includes: a first configuration module, configured to occupy only the V2X service.
- the scheduling information is configured in the subframe in which each V2X service data is located; or the second configuration module is configured to be in the first or multiple subframes of the V2X service data when the V2X service occupies multiple subframes.
- Configure scheduling information is configured to be used to be in the first or multiple subframes of the V2X service data when the V2X service occupies multiple subframes.
- the first sending module includes: an indicating unit, configured to indicate that the SPS is sent to the second OBU in the first scheduling period of the scheduling information of the SPS. Scheduling information and V2X service data; the second sending unit is configured to send V2X service data according to the sending resource indicated in the first scheduling period after the first scheduling period.
- FIG. 6 is a structural block diagram of a resource configuration apparatus for a vehicle networking service according to an embodiment of the present invention.
- the apparatus is applied to a roadside unit RSU side.
- the apparatus includes: a third configuration module 62 configured to be configured to be configured for
- the fourth configuration module 64 is coupled to the third configuration module 62 and configured to allocate resource configuration information to the onboard unit OBU.
- the resource configuration information of the transmission resource of the car network V2X service is sent.
- the fourth configuration module 62 includes: a second receiving unit, configured to receive a request message sent by the OBU for requesting to send a resource; and a third sending unit, coupled to the second receiving unit, configured to send to the OBU Resource configuration information in response to a transmission resource of the request message.
- the transmission resource involved in the embodiment may include: a resource required for transmitting V2X service data and scheduling information in the V2X service, where the scheduling information is used to indicate information required for resource scheduling of the V2X service data; wherein the sending The resource indicates the scheduling information and the resources required for the V2X service data, and the number of times the scheduling information and the V2X service data are transmitted in one resource period.
- each of the above modules may be implemented by software or hardware.
- the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
- the present invention provides a method for transmitting a car network service, comprising: an On-Board Unit (OBU) requesting a base station to allocate or selecting a transmission resource of a vehicle to a V2X service in a resource pool. Sending V2X scheduling information to the OBU to the requesting base station; the OBU transmitting resource scheduling information of the V2X service in a specific position of the subframe in which the resource is transmitted, where the resource scheduling information indicates resources occupied by V2X service data in the same and/or different subframes; the base station indicates V2X The number of times the scheduling information and/or service data is sent.
- OBU On-Board Unit
- the steps of the method of the alternative embodiment include:
- Step S301 The OBU prepares to send the V2X service, and the OBU obtains the transmission resource of the V2X service.
- the V2X service to be sent by the OBU includes a Cooperative Awareness Message (CAM) or a Decentralized Environmental Notification Message (DENM); the OBU has two ways to obtain the V2X service transmission resources: Scheduling or autonomous selection, the scheduling means that the OBU sends a request to the base station eNB, and the base station allocates resources for the OBU.
- the autonomous selection means that the OBU randomly selects the required resources from the allocated or pre-configured resource pools of the base station.
- the transmission resource includes: a resource for scheduling information and a V2X service resource, where the scheduling information resource adopts a fixed allocation manner; the specific resource allocation process is: the base station eNB sends the DCI format 5 in the physical downlink control channel PDCCH/evolved physical downlink control channel ePDCCH.
- the scheduling information resource may also adopt a static allocation mode in a subframe: that is, carrying a V2X service
- the fixed frequency domain position in the first subframe transmits the V2X scheduling information, or the eNB indicates the subframe in which the V2X scheduling information is located in the DCI-5, and also transmits the V2X scheduling information in the fixed frequency domain position of the subframe.
- Fixed allocation means that the V2X scheduling information is located at a fixed position: the time domain fills a TTI, the frequency domain location is fixed, and the frequency domain location such as CQI/DMRS/ACK/NACK is removed, and the size is fixed (RB start, duration, etc. fixed). The content is not enough to be filled with 0.
- FIG. 7 is a schematic diagram of V2X scheduling information according to an alternative embodiment of the present invention.
- the Demodulation Reference Signal is used to combat the Doppler shift effect in the V2X high-speed driving environment.
- the following improvements are made: 1)
- the existing LTE PUSCH uses time domain multiplexing to transmit one subframe and two DMRS. In this alternative embodiment, the number of transmissions may be increased to 3-4 times; 2) frequency domain multiplexing (frequency domain occupies one subcarrier), DMRS time domain occupies one subframe, and one subframe is sent once or twice. .
- the OBU detection (using a specific RNTI detection) reads the content of the DCI-5, and sets the content of the V2X scheduling information according to the content of the DCI-5.
- FIG. 8 is a schematic diagram of SPS scheduling according to an alternative embodiment of the present invention, as shown in FIG.
- the V2X scheduling information sent by the OBU and the V2X service are multiplexed in one subframe or the V2X scheduling information simultaneously indicates scheduling of other V2X service subframes.
- the V2X service scheduling information includes at least: a time-frequency position, a modulation and coding scheme MCS, and a target OBU. Identification ID.
- the eNB may select either a dynamic scheduling or a semi-persistent scheduling (SPS).
- SPS is used for the CAM data according to the service requirement, and the dynamic scheduling is adopted for the DEMN service.
- the eNB needs to pass the radio resource control (Radio Resource). Control, referred to as RRC) signaling indicates the period of the SPS, and indicates the SPS activation/release in the DCI5.
- RRC radio resource control
- the SPS activation/release flag is set in the V2X scheduling information. It is known that when the SPS is activated, in the SPS cycle, the V2X service is scheduled on the same resource.
- V2X scheduling information is sent in the first SPS cycle and the V2X scheduling information is not required to be sent in the subsequent SPS cycle, when the SPS is released/deactivated.
- the fixed location in each V2X service subframe has corresponding V2X scheduling information.
- the sending OBU autonomously selects the sending resource in the resource pool configured by the preset or the eNB, the sending OBU sets the content of the V2X scheduling information according to the selected resource.
- the resource pool does not allocate scheduling information resources, and the resources are fixed.
- the OBU selects service resources from the resource pool: including 1) resource pools of different priorities 2) the same resource pool, using probability selection.
- the probability selection means that the eNB sends the probability parameter Pt through RRC signaling, the OBU selects a random number Pc(0-1), and if Pc ⁇ Pt, the OBU randomly selects one resource in the resource pool for the V2X service, otherwise the OBU continues to select Random number Pc and repeat the above process until resources can be selected.
- scheduling information is sent only in the first subframe, the scheduling information indicates resource configuration in the current subframe and the remaining subframes, or the eNB indicates the time-frequency location of the V2X scheduling information, in the scheduling information. Indicates a plurality of V2X service resource configurations in a subframe and a subframe allocated to the V2X.
- the scheduling information and V2X services sent by the OBU are sent on the PC5 air interface or Uu air interface.
- the OBU service scheduling is used for the OBU to be located in the coverage area of the eNB.
- the OBU autonomously selects the resource to be used in the coverage of the eNB or the coverage area.
- the resource pool is configured by the eNB.
- the resource pool is pre-configured in the OBU. local.
- the V2X service in this alternative embodiment includes at least one of the following: V2V, V2I, V2P, V2N.
- Step S302 The base station indicates the number of times of sending the V2X service.
- the base station indicates the number of repeated transmissions of the V2X service through RRC signaling, such as signaling through system broadcast messages, RRC connection reconfiguration, and the like.
- the number of retransmissions is 0-3 times, that is, 1-4 times.
- the retransmission here refers to Incremental Redundancy (IR) retransmission, that is, for the same original information, the data sent each time is not completely the same, and is sent according to the fixed IR version, that is, according to version 0.
- IR Incremental Redundancy
- the eNB may also specify the number of retransmissions, such as 0-1 times. In general, for CAM or periodic V2X information, the number of reselections in one cycle can be: 0-1 times, and for DEMn or event-triggered V2X information, the number of reselections is generally 0-3 times.
- the eNB specifies the mode of reselection, that is, the resource configuration of the retransmitted data. If there is retransmission, the transmitting OBU may indicate the retransmission mode information in the V2X scheduling information, or the eNB indicates by the system broadcast message.
- the sending OBU autonomously selects the sending resource in the resource pool configured by the preset or the eNB, the number of times the V2X service is sent is specified in the resource pool.
- the V2X transmission uses the uplink channel PUSCH transmission, and the PUSCH HARQ adopts the synchronous non-adaptive mode, that is, the retransmission occurs at a fixed interval position relative to the initial transmission time, and the receiver knows the retransmission position, in order to reduce the uplink signaling load,
- the non-adaptive mode that is, the retransmission and the initial transmission use the same resource block RB, MCS, power and other parameters.
- Step S303 The receiving OBU detects a subframe in which V2X scheduling information and/or V2X service may exist.
- a target identifier such as a target group identifier
- the OBU is in RRC_Connected or RRC_Idle mode. It should be noted that the resource pool includes a sending resource pool and a receiving resource pool.
- the OBU involved in the alternative embodiment is equivalent to the user equipment UE, and the base station eNB can serve as the RSU.
- the optional embodiment is applicable to the V2I service.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- the present embodiment is a flowchart for transmitting a V2X service to an OBU autonomously selected resource in a base station coverage.
- FIG. 9 is a flowchart of a method according to an alternative embodiment of the present invention. As shown in FIG. 9, the steps of the embodiment include:
- Step S901 the base station allocates a resource pool
- the base station notifies the allocated resource pool by using a system broadcast message or a dedicated RRC message, where the resource pool includes at least one of the following resources: scheduling information time-frequency resource, service data time-frequency resource, V2X scheduling information, and/or number of service retransmissions, and sending Probability, scheduling information MCS, service MCS, SPS scheduling period.
- the time domain location of the scheduling information may be indicated in the resource pool.
- the resource pool may also include one or more resources, and the multiple resource pools may respectively correspond to different priority V2X services, and different resource pools may not overlap.
- the resource pool types include: a sending resource pool and a receiving resource pool.
- the sending resource pool may be a subset of the receiving resource pool, that is, the receiving resource pool includes a sending resource pool.
- Step S902 the base station instructs the OBU to independently select a resource
- the base station instructs the OBU to independently select a resource by using a system broadcast message or a dedicated RRC message.
- Step S903 the OBU selects a resource
- the OBU selects resources in the corresponding sending resource pool according to the service attribute.
- Step S904 the OBU sends the V2X scheduling information and the V2X service.
- the OBU sets the content of the V2X scheduling information, where the scheduling information includes at least one of the following: a V2X service time-frequency location, a V2X service MCS, and a target OBU identifier; and, if the SPS scheduling is used, the scheduling information may further include: SPS activation/deactivation flag.
- the scheduling information and the service are sent in the same subframe or different subframes. If they are sent in different subframes, the scheduling information is also Includes: Subframe configuration for V2X services.
- the OBU sends the V2X scheduling information and the service one or more times according to the indication of the base station. If the OBU sends the message multiple times, the retransmission mode includes: the retransmitted IR version, the retransmission resource, and the like, and the parameters of the mode are all specified by the eNB.
- the sent scheduling information further includes: a retransmission mode parameter.
- step S905 the target OBU receives the V2X service.
- the target OBU detects the receiving resource pool, or after receiving the scheduling information, the target OBU detects the corresponding subframe according to the scheduling information indication, or the target OBU detects the corresponding subframe according to the system broadcast message indication of the base station.
- the target OBU detects the required scheduling information, it continues to receive the corresponding V2X service.
- the required scheduling information is that the target OBU determines whether it belongs to the target OBU identifier in the scheduling information, and if so, the required scheduling information, where the target OBU identifier can be the target OBU group identifier or the target OBU ID.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- FIG. 10 is a flowchart of a method according to an alternative embodiment of the present invention. As shown in FIG. 10, the steps of the method in this embodiment include:
- step S1001 the V2X resource pool is pre-allocated.
- the pre-allocation is stored in the OBU local area, such as an OBU memory card, when the OBU is in the coverage of the base station; the pre-allocation is generally performed by the base station or the network management system.
- the resource pool includes: a sending resource pool and a receiving resource pool. The sending resource pool is used for transmitting the V2X service outside the coverage of the base station, and the receiving resource pool is used for the OBU to monitor the V2X service outside the coverage of the base station.
- the specific resource pool content is similar to that involved in step S801 in the first embodiment.
- step S1002 the OBU selects a resource.
- step S1003 the OBU sends V2X scheduling information and service data.
- the step S1003 is the same as the step S904, and details are not described herein again.
- step S1004 the target OBU receives the V2X service.
- the step S1004 is the same as the step S905, and details are not described herein again.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- FIG. 11 is a flowchart of the method according to the third embodiment of the present invention. As shown in FIG. 11, the steps of the method in this embodiment include:
- step S1101 the OBU requests the base station to allocate V2X resources.
- the OBU has V2X information to be sent, and the OBU sends indication information to the base station through RRC signaling, where the indication information is used to request the base station to allocate resources.
- step S1102 the base station allocates V2X communication resources.
- the base station allocates V2X scheduling information resources and V2X service resources.
- step S1103 the base station sends scheduling information.
- the base station sends the scheduling information by using the DCI format 5 on the PDCCH, and masks the CRC of the PDCCH by using a dedicated RNTI.
- the base station indicates the time domain location of the scheduling information by using a broadcast message or dedicated RRC signaling before transmitting the scheduling information.
- Step S1104 The OBU detects the scheduling information sent by the receiving base station.
- the OBU detects the CRC of the PDCCH by using the dedicated RNTI in the time domain location of the scheduling information. If the detection succeeds, the scheduling information is required, and the OBU reads the scheduling information in the DCI-5.
- step S1105 the OBU sends V2X scheduling information and services.
- the step S1105 is similar to the step S904.
- the V2X scheduling information is dynamic scheduling information, that is, the subframe in which each V2X service is located may exist, and the first subframe that is initially sent in the V2X service must have a scheduling.
- step S1106 the target OBU receives the V2X service.
- the step S1106 is similar to the step S905. It should be noted that because the dynamic scheduling is adopted, the target OBU needs to detect each subframe in which V2X service or scheduling information may exist.
- Embodiment 4 is a diagrammatic representation of Embodiment 4:
- FIG. 12 is a flowchart of a method according to an alternative embodiment of the present invention. As shown in FIG. 12, the steps of the method in this embodiment include:
- step S1201 the OBU requests the base station to allocate resources.
- step S1202 the base station allocates resources and notifies the OBU.
- the base station sends an SPS scheduling period through RRC signaling, and the base station sends an SPS activation indication and SPS resource configuration information through the DCI-5.
- step S1203 the OBU determines whether the SPS scheduling is activated. If yes, the process goes to step S1204, otherwise to step S1205.
- the OBU determines whether to activate the SPS according to the SPS scheduling information in the DCI-5 information sent by the base station, and the specific bit can be used in the DCI-5 to indicate the SPS activation.
- step S1204 the OBU uses the SPS to send V2X scheduling information and service data.
- the SPS is activated.
- the OBU sends the V2X scheduling information and the V2X service according to the indication of the DCI-5 in the first SPS period, and sends the V2X service to the same resource for the same service in the subsequent SPS period, and does not send the scheduling information.
- the OBU performs retransmission according to the indication of the base station. Going to step S1206, the flow ends.
- Step S1205 The target OBU receives the V2X service.
- the OBU detects that the SPS is deactivated, and uses the dynamic scheduling to send V2X scheduling information and services.
- step S1206 the OBU dynamically sends the V2X scheduling information and services.
- FIG. 13 is a structural block diagram of an apparatus for transmitting a V2X service according to an alternative embodiment 5 of the present invention. As shown in FIG. 13, the method includes:
- the first receiver 1302 is configured to receive V2X service request information sent by the OBU;
- the first transmitter 1304 is configured to send scheduling information and a service resource configuration message to the OBU 60, and is further configured to indicate to the OBU the number of V2X service transmissions, and activate/deactivate the SPS scheduling.
- the first processor 1306 is configured to determine a scheduling resource according to the V2X service request of the OBU, further set to select a V2X transmission frequency, when to activate/deactivate the SPS scheduling, and to scramble the DCI-5 CRC by using a specific RNTI.
- the device may be a base station including LTE or a stationary UE with RSU capability.
- FIG. 14 is a structural block diagram of an apparatus for transmitting a V2X service according to an alternative embodiment of the present invention. As shown in FIG. 14, the method includes:
- the second receiver 1402 is configured to receive the resource V2X configuration information sent by the base station, and further configured to receive the V2X scheduling information and the service data sent by the OBU;
- the second transmitter 1404 is configured to send a V2X service request to the base station, and is further configured to send V2X scheduling information and service data.
- the second processor 1406 is configured to select V2X resources and detect V2X scheduling.
- the apparatus may be an OBU in the LTE or an OBU in the DSRC, where the OBU in the LTE is a UE or a mobile terminal in the E-UTRAN.
- Embodiments of the present invention also provide a storage medium.
- the foregoing storage medium may be configured to store program code for performing the following steps:
- Step S1 The first onboard unit OBU acquires a transmission resource for transmitting the vehicle network V2X service;
- the sending resource includes: a resource required for sending the V2X service and a resource required for sending the scheduling information, where the scheduling information is used to indicate information required for resource scheduling of the V2X service;
- Step S2 The first OBU sends the scheduling information and the V2X service to the second OBU on the sending resource.
- the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
- ROM Read-Only Memory
- RAM Random Access Memory
- a mobile hard disk e.g., a hard disk
- magnetic memory e.g., a hard disk
- modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the first onboard unit OBU is used to acquire the transmission resource for transmitting the V2X service of the vehicle network
- the transmission resource includes: the resource required for transmitting the V2X service data and the scheduling information in the V2X service, and the scheduling information is used for The information required for the resource scheduling of the V2X service data is instructed, and the scheduling information and the V2X service data are sent to the second OBU on the sending resource by the first OBU, that is, the scheduling information and the V2X service data can be simultaneously sent through the obtained sending resource.
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Abstract
本发明提供了一种车联网业务的发送方法及装置、资源配置方法及装置,其中,车联网业务的发送方法包括:第一车载单元OBU获取用于发送车联网V2X业务的发送资源,其中,发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对V2X业务数据进行资源调度所需要的信息;第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据;其中,调度信息和V2X业务数据在发送资源中相同的子帧进行频域复用,调度信息指示在相同和/或不同子帧中对V2X业务数据进行资源配置。通过本发明,解决了相关技术中的D2D技术只能分开发送资源调度信息和V2X业务数据的问题,填补了相关技术的空白。
Description
本发明涉及通信领域,具体而言,涉及一种车联网业务的发送方法及装置、资源配置方法及装置。
随着经济社会高速发展,中国汽车保有量迅速增长,道路交通事故频繁发生,已成为近年来影响我国公众安全感的重要因素之一,道路交通安全问题已经成为影响社会和谐和改善民生的基本问题之一。中国迫切需要从技术、政策、教育等各方面改善交通安全,其中提升车辆安全设计是其中的重要组成部分。
提升车辆安全的技术主要分为被动安全技术和主动安全技术。被动安全技术用于在事故发生后,对车内、车外人员及物品的保护;主动安全技术用于防止和减少车辆发生事故,避免人员受到伤害;主动安全技术是现代车辆安全技术发展的重点和趋势。
基于通信的碰撞预警***,通过利用先进的无线通信技术和新一代信息处理技术,实现车与车、车与路侧基础设施间的实时信息交互,告知彼此目前的状态(包括车辆的位置、速度、加速度、行驶路径)及获知的道路环境信息,协作感知道路危险状况,及时提供多种碰撞预警信息,防止道路交通安全事故的发生,成为当前各国试图解决道路交通安全问题的一种新的思路。
车联网(Vehicle to Everything,简称为V2X):是指通过装载在车辆上的传感器、车载终端及电子标签提供车辆信息,采用各种通信技术实现车辆与车辆(Vehicle to Vehicle,简称为V2V)、车辆与人(Vehicle to Pedestrian,简称为V2P)、车与基础设施(Vehicle to Infrastructure,简称为V2I)互连互通,并在信息网络平台上对信息进行提取、共享等有效利用,对车辆进行有效的管控和提供综合服务。图1为相关技术中通过网络信息平台向车辆发送交通、调度信息的示意图。
近年来随着新的移动通信技术的发展,国际上出现了使用(Long Time Evolution,简称为LTE)技术来解决基于车联网通信应用的研究。
路边通信单元(Road Side Unit,简称为RSU)可以接收车辆请求,保证车辆接入Internet有网关的功能;此外,它也拥有数据运算、存储、转发的功能。
车辆与路边单元的通信(Vehicle to Road Side Unit,简称为V2R),也可称为V2I。V2R通信时的主要特点包括:
(1)RSU广播时,广播信息只发送给它覆盖范围内的所有车辆:
(2)RSU和车辆之间是单跳传输,防止多跳带来的包传递成功率低、网络吞吐量低等不利影响:
(3)RSU可以快速的接收探测到经过的车辆、红绿灯和一些路况信息,并把这些信息进行处理、重新排序、选择之后再发给车辆。
上述三个方面保证车辆经过RSU时,通过与RSU建立连接保证车辆可以可靠、实时的接入Internet或者下载RSU存储的数据。
图2是相关技术3GPP中设备到设备D2D通信的示意图,如图2所示,设备到设备(Device to Device,简称为D2D)的用户面数据直接通过UE之间的空口PC5进行发送,不需要通过演进分组核心网(Evolved Packet Core,简称为EPC),D2D的控制面信令通过EPC。D2D通信包括UE位于LTE覆盖内或LTE覆盖外场景,D2D包括发现和通信,参加D2D的UE可以通过基站eNB调度资源或者在资源池中选择资源发送数据。D2D通信数据固定发送4次,即相同的数据发4次,采用增量冗余(Incremental Redundancy,简称为IR),接收UE将4次数据合并获得可靠性。
D2D通信包括资源调度SA和业务数据发送,其中,资源调度指示业务数据的资源配置,资源调度固定发送两次。D2D发现或通信采用LTE物理上行共享信道(Physical Uplink Shared Channel,简称为PUSCH)资源,采用单载波频分多址(Single-arrier Frequentcy-Division Multiple Access,简称为SC-FDMA)方式。
在对相关D2D技术的研究和实践过程中,存在如下问题:D2D技术用于低速、少量UE的场景,因此资源调度信息和业务数据分开发送,调度信息发送2次,通信数据发送4次;在LTE V2X中,对于高速、大量UE的场景,相关技术中的D2D技术难以满足其要求。
针对相关技术中的上述问题,目前尚未存在有效的解决方案。
发明内容
本发明实施例提供了一种车联网业务的发送方法及装置、资源配置方法及装置,以至少解决相关技术中的D2D技术只能分开发送资源调度信息和业务数据分的问题。
根据本发明实施例的一个方面,提供了一种车联网业务的发送方法,包括:第一车载单元OBU获取用于发送车联网V2X业务的发送资源,其中,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息;所述第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据;其中,所述调度信息和所述V2X业务数据在发送资源中相同的子帧进行频域复用,所述调度信息指示在相同和/或不同子帧中对所述V2X业务数据进行资源配置。
可选地,在所述第一OBU在路边单元RSU覆盖范围内时,所述第一车载单元OBU获取用于发送车联网V2X业务的发送资源包括:所述第一OBU向所述RSU发送用于请求所述发
送资源的请求消息;所述第一OBU接收所述RSU响应于所述请求消息发送的所述发送资源的资源配置信息;或,所述第一OBU从所述RSU预配置的第一发送资源池中获取所述发送资源;其中,所述发送资源指示所述调度信息和V2X业务数据所需的资源,以及所述调度信息和V2X业务数据在一个资源周期内的发送次数。
可选地,在所述第一OBU在路边单元RSU覆盖范围内时,所述第一OBU发送的调度信息和V2X业务数据由所述第二OBU在根据预配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和V2X业务数据后,所述第二OBU根据预定义的规则合并多次接收的V2X业务。
可选地,在所述第一OBU在路边单元RSU覆盖范围外时,所述第一车载单元OBU获取用于发送车联网V2X业务的发送资源包括:所述第一OBU从预配置在所述OBU中的用于存储所述发送资源的第二发送资源池中选择所述发送资源;其中,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
可选地,在所述第一OBU在路边单元RSU覆盖范围外时,所述第一OBU发送的调度信息和V2X业务数据由所述第二OBU在根据预配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和V2X业务数据后,所述第二OBU根据预定义的规则合并多次接收的V2X业务。
可选地,所述发送资源还包括以下至少之一:所述V2X业务的发送次数、资源周期、半持续调度SPS的调度周期。
可选地,所述调度信息的资源包括:所述调度信息的时频资源;所述V2X业务数据的资源包括:所述V2X业务数据的时频资源、所述V2X业务数据的MCS。
可选地,所述调度信息包括:所述V2X业务的时频位置,所述V2X业务数据的MCS和所述第二OBU的标识;所述V2X业务数据包括以下至少之一:车辆到车辆V2V业务、车辆到基础设施V2I业务、车辆到行人V2P业务或车辆到网络V2N业务。
可选地,在所述调度信息为动态调度信息时,在所述第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据之前,所述方法还包括:在所述V2X业务只占用一个子帧时,所述第一OBU在每个所述V2X业务数据所在的子帧中配置所述调度信息;或,在所述V2X业务占用多个子帧时,所述第一OBU在所述V2X业务数据的首个或多个子帧中配置所述调度信息。
可选地,在所述调度信息为半持续调度SPS类型的调度信息时,所述第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据包括:所述第一OBU在所述SPS的调度信息的第一个调度周期中指示向所述第二OBU发送所述SPS的调度信息和所述V2X业务数据;并在所述第一个调度周期之后,按照所述第一个调度周期中所指示的发送资源发送V2X业务数据。
根据本发明实施例的另一个方面,提供了一种车联网业务的资源配置方法,包括:路边单元RSU配置车联网V2X业务的发送资源池和接收资源池的资源配置信息;所述RSU向车载单元OBU配置所述资源配置信息。
可选地,所述OBU在所述RSU覆盖范围内时,所述RSU向车载单元OBU配置所述资源配置信息包括:所述RSU接收OBU发送的用于请求所述发送资源的请求消息;所述RSU向所述OBU发送响应于所述请求消息的所述发送资源的资源配置信息。
可选地,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息。
可选地,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
根据本发明实施例的再一个方面,提供了一种车联网业务的发送装置,应用于第一车载单元OBU侧,包括:获取模块,设置为获取用于发送车联网V2X业务的发送资源,其中,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息;第一发送模块,设置为在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据;其中,所述调度信息和所述V2X业务数据在发送资源中相同的子帧进行频域复用,所述调度信息指示在相同和/或不同子帧中对所述V2X业务数据进行资源配置。
可选地,在所述第一OBU在路边单元RSU覆盖范围内时,所述获取模块包括:第一发送单元,设置为向所述RSU发送用于请求所述发送资源的请求消息;第一接收单元,设置为接收所述RSU响应于所述请求消息发送的所述发送资源的资源配置信息;或,获取单元,设置为从所述RSU预配置的第一发送资源池中获取所述发送资源;其中,所述发送资源指示所述调度信息和V2X业务数据所需的资源,以及所述调度信息和V2X业务数据在一个资源周期内的发送次数。
可选地,在所述第一OBU在路边单元RSU覆盖范围内时,所述第一OBU发送的调度信息和业务数据由所述第二OBU在根据所述RSU配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和V2X业务数据后,所述第二OBU根据预定义的规则合并多次接收的V2X业务。
可选地,在所述第一OBU在路边单元RSU覆盖范围外时,所述获取模块包括:选择单元,设置为从预配置在所述OBU中的用于存储所述发送资源的第二资源池中选择所述发送资源;其中,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
可选地,在所述第一车载单元OBU在路边单元RSU覆盖范围外时,所述第一OBU发送的调度信息和V2X业务数据由所述第二OBU在根据预配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和业务数据后,所述第二OBU根据预
定义的规则合并多次接收的V2X业务。
可选地,所述发送资源还包括以下至少之一:所述V2X业务的发送次数、资源周期、半持续调度SPS的调度周期。
可选地,所述调度信息的资源包括:所述调度信息的时频资源;所述V2X业务数据的资源包括:所述V2X业务数据的时频资源、所述V2X业务数据的MCS。
可选地,所述调度信息包括:所述V2X业务的时频位置,所述V2X业务数据的MCS和所述第二OBU的标识;所述V2X业务数据包括以下至少之一:车辆到车辆V2V业务、车辆到基础设施V2I业务、车辆到行人V2P业务或车辆到网络V2N业务。
可选地,在所述调度信息为动态调度信息时,在所述第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据之前,所述装置还包括:第一配置模块,设置为在所述V2X业务只占用一个子帧时,在每个所述V2X业务数据所在的子帧中配置所述调度信息;或,第二配置模块,设置为在所述V2X业务占用多个子帧时,在所述V2X业务数据的首个或多个子帧中配置所述调度信息。
可选地,在所述调度信息为半持续调度SPS类型的调度信息时,所述第一发送模块包括:指示单元,设置为在所述SPS的调度信息的第一个调度周期中指示向所述第二OBU发送所述SPS的调度信息和所述V2X业务数据;第二发送单元,设置为在所述第一个调度周期之后,按照所述第一个调度周期中所指示的发送资源发送V2X业务数据。
根据本发明实施例的再一个方面,提供了一种车联网业务的资源配置装置,应用于路边单元RSU侧,包括:第三配置模块,设置为配置车联网V2X业务的发送资源池和接收资源池的资源配置信息;第四配置模块,设置为向车载单元OBU配置所述资源配置信息。
可选地,所述第四配置模块包括:第二接收单元,设置为接收OBU发送的用于请求所述发送资源的请求消息;第三发送单元,设置为向所述OBU发送响应于所述请求消息的所述发送资源的资源配置信息。
可选地,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息。
可选地,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
通过本发明实施例,采用第一车载单元OBU获取用于发送车联网V2X业务的发送资源,而该发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对V2X业务数据进行资源调度所需要的信息,进而在第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据,即可以通过获取到的发送资源同时发送调度信息和V2X业务数据,解决了相关技术中的D2D技术只能分开发送资源调度信息和V2X业务数据的问题,填补了相关技术的空白。
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1为相关技术中通过网络信息平台向车辆发送交通、调度信息的示意图;
图2是相关技术3GPP中设备到设备D2D通信的示意图;
图3是根据本发明实施例的车联网业务数据的发送方法的流程图;
图4是根据本发明实施例的车联网业务的资源配置方法的流程图;
图5是根据本发明实施例的车联网业务的发送装置的结构框图;
图6是根据本发明实施例的车联网业务的资源配置装置结构框图;
图7是根据本发明可选实施例的V2X调度信息示意图;
图8是根据本发明可选实施例的SPS调度示意图;
图9是根据本发明可选实施例一方法的流程图;
图10是根据本发明可选实施例二方法的流程图;
图11是根据本发明可选实施例三方法的流程图;
图12是根据本发明可选实施例四方法的流程图;
图13是本发明可选实施例五的发送V2X业务的装置结构框图;
图14是根据本发明可选实施例的发送V2X业务的装置的结构框图。
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是,本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。
在本实施例中提供了一种车联网业务数据的发送方法,图3是根据本发明实施例的车联网业务数据的发送方法的流程图,如图3所示,该流程包括如下步骤:
步骤S302:第一车载单元OBU获取用于发送车联网V2X业务的发送资源,其中,发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对
V2X业务数据进行资源调度所需要的信息;;
步骤S304:第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据;
其中,调度信息和V2X业务数据在发送资源中相同的子帧进行频域复用,调度信息指示在相同和/或不同子帧中对V2X业务数据进行资源配置。
通过本发明实施例的步骤S302和步骤S304,采用第一车载单元OBU获取用于发送车联网V2X业务的发送资源,而该发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对V2X业务数据进行资源调度所需要的信息,进而在第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据,可见,通过本实施例可以通过获取到的发送资源同时发送调度信息和V2X业务数据,解决了相关技术中的D2D技术只能分开发送资源调度信息和V2X业务数据的问题,填补了相关技术的空白。
在本实施例的一个可选实施方式中,在该第一OBU在路边单元RSU覆盖范围内时,对于本实施例中步骤S302中涉及到的第一车载单元OBU获取用于发送车联网V2X业务的发送资源的方式,可以通过如下方式来实现:
方式一:
步骤S11:第一OBU向RSU发送用于请求发送资源的请求消息;
步骤S12:第一OBU接收RSU响应于请求消息发送的发送资源的资源配置信息;
方式二:第一OBU从RSU预配置的第一发送资源池中获取发送资源;其中,发送资源指示调度信息和V2X业务数据所需的资源,以及调度信息和V2X业务数据在一个资源周期内的发送次数。
需要说明的是,该发送次数可根据车辆密度,PC5接口的信道质量,运营商策略等确定。一般为1-4次,即0-3次重传,重传采用增量冗余,即每次重传和首次传输不同。如果车辆密度低、PC5质量差则选择较多次数。
基于上述可选实施方式中,在第一OBU在路边单元RSU覆盖范围内时,该第一OBU发送的调度信息和业务数据由第二OBU在根据RSU配置的接收资源池进行检测之后再接收,其中,在多次收到第一OBU发送的调度信息和V2X业务数据后,第二OBU根据预定义的规则合并多次接收的V2X业务。
其中,该预定义规则为:第一OBU按照增量冗余的方式发送V2X调度信息和业务数据,其中增量冗余的发送版本按照0,2,3,1顺序发送,如果第二OBU第一次解码成功则不需要继续接收后续的重发版本,如果第一次失败,则将后续版本和第一次版本进行合并,直到解码成功。
在本实施例的另一个可选实施方式中,在第一OBU在路边单元RSU覆盖范围外时,对于本实施例步骤S302中涉及到的第一OBU获取用于发送车联网V2X业务的发送资源的方式,可以通过如下方式来实现:第一OBU从预配置在OBU中的用于存储发送资源的第二发送资
源池中选择发送资源;其中,发送资源指示调度信息和V2X业务数据所需的资源,以及调度信息和V2X业务数据在一个资源周期内的发送次数。
基于上述可选实施方式中,在第一OBU在路边单元RSU覆盖范围外时,第一OBU发送的调度信息和业务数据由第二元OBU在根据RSU配置的接收资源池进行检测之后再接收,其中,在多次收到第一OBU发送的调度信息和V2X业务数据后,第二OBU根据预定义的规则合并多次接收的V2X业务。
对于本实施例中涉及到的发送资源还可以包括以下至少之一:V2X业务的发送次数、资源周期、半持续调度SPS的调度周期。以及,该调度信息的资源可以包括:调度信息的时频资源;V2X业务数据的资源包括:V2X业务数据的时频资源、V2X业务数据的MCS。
其中,该资源周期根据不同的V2X业务需求采用不同的周期数值。
此外,该调度信息可以包括:V2X业务的时频位置,V2X业务数据的MCS和第二OBU的标识;V2X业务数据包括以下至少之一:车辆到车辆V2V业务、车辆到基础设施V2I业务、车辆到行人V2P业务或车辆到网络V2N业务。
而在本实施实例的再一个可选实施方式中,在调度信息为动态调度信息时,在第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据之前,本实施例的方法还可以包括:
步骤S21:在V2X业务只占用一个子帧时,第一OBU在每个V2X业务数据所在的子帧中配置调度信息;或,
步骤S22:在V2X业务占用多个子帧时,第一OBU在V2X业务数据的首个或多个子帧中配置调度信息。
而在调度信息为半持续调度SPS类型的调度信息时,对于本实施例步骤S204中涉及到的第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据的方式可以通过如下方式来实现:第一OBU在SPS的调度信息的第一个调度周期中指示向第二OBU发送SPS的调度信息和V2X业务数据;并在第一个调度周期之后,按照第一个调度周期中所指示的发送资源发送V2X业务数据。
图4是根据本发明实施例的车联网业务的资源配置方法的流程图,如图4所示,该方法的步骤包括:
步骤S402:路边单元RSU配置车联网V2X业务的发送资源池和接收资源池的资源配置信息;
步骤S404:RSU向车载单元OBU配置资源配置信息。
对于本实施例中步骤S304中涉及到的OBU在RSU覆盖范围内时,RSU向车载单元OBU配置资源配置信息的方式,可以通过如下方式来实现:
方式一:OBU在RSU覆盖范围内时,该方法的步骤包括:
步骤S31:RSU接收第一OBU发送的用于请求发送资源的请求消息;
步骤S32:RSU向第一OBU发送响应于请求消息的发送资源的资源配置信息。
对于本实施例中涉及到的发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对V2X业务数据进行资源调度所需要的信息。其中,该发送资源指示调度信息和V2X业务数据所需的资源,以及调度信息和V2X业务数据在一个资源周期内的发送次数。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端设备(可以是手机,计算机,服务器,或者网络设备等)执行本发明各个实施例的方法。
在本实施例中还提供了一种车联网业务数据的发送装置,该装置用于实现上述实施例及优选实施方式,已经进行过说明的不再赘述。如以下所使用的,术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现,但是硬件,或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本发明实施例的车联网业务的发送装置的结构框图,该装置应用于第一车载单元OBU侧,如图5所示,该装置包括:获取模块52,设置为获取用于发送车联网V2X业务的发送资源,其中,发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对V2X业务数据进行资源调度所需要的信息;第一发送模块54,与获取模块52耦合连接,设置为在发送资源上向第二OBU发送调度信息和V2X业务数据;其中,调度信息和V2X业务数据在发送资源中相同的子帧进行频域复用,调度信息指示在相同和/或不同子帧中对V2X业务数据进行资源配置。
可选地,在第一OBU在路边单元RSU覆盖范围内时,该获取模块42包括:第一发送单元,设置为向RSU发送用于请求发送资源的请求消息;第一接收单元,设置为接收RSU响应于请求消息发送的发送资源的资源配置信息;或,获取单元,设置为从RSU预配置的第一发送资源池中获取发送资源;其中,发送资源指示调度信息和V2X业务数据所需的资源,以及调度信息和V2X业务数据在一个资源周期内的发送次数。
基于上述在第一OBU在路边单元RSU覆盖范围内时,该第一OBU发送的调度信息和业务数据由第二元OBU在根据RSU配置的接收资源池进行检测之后再接收,其中,在多次收到第一OBU发送的调度信息和V2X业务数据后,第二OBU根据预定义的规则合并多次接收的V2X业务。
可选地,在第一OBU在路边单元RSU覆盖范围外时,该获取模块42包括:选择单元,设置为从预配置在OBU中的用于存储发送资源的第二资源池中选择发送资源;其中,发送资
源指示调度信息和V2X业务数据所需的资源,以及调度信息和V2X业务数据在一个资源周期内的发送次数。
基于上述在第一OBU在路边单元RSU覆盖范围外时,第一OBU发送的调度信息和V2X业务数据由第二OBU在根据RSU预配置的接收资源池进行检测之后再接收,其中,在多次收到第一OBU发送的调度信息和业务数据后,第二OBU根据预定义的规则合并多次接收的V2X业务。
需要说明的是,本实施例中涉及到的发送资源还可以包括以下至少之一:V2X业务的发送次数、资源周期、半持续调度SPS的调度周期。
而该调度信息的资源还可以包括:调度信息的时频资源;V2X业务数据的资源包括:V2X业务数据的时频资源、V2X业务数据的MCS。以及,该调度信息还可以包括:V2X业务的时频位置,V2X业务数据的MCS和第二OBU的标识;V2X业务数据包括以下至少之一:车辆到车辆V2V业务、车辆到基础设施V2I业务、车辆到行人V2P业务或车辆到网络V2N业务。
可选地,在调度信息为动态调度信息时,在第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据之前,装置还包括:第一配置模块,设置为在V2X业务只占用一个子帧时,在每个V2X业务数据所在的子帧中配置调度信息;或,第二配置模块,设置为在V2X业务占用多个子帧时,在V2X业务数据的首个或多个子帧中配置调度信息。
可选地,在调度信息为半持续调度SPS类型的调度信息时,该第一发送模块包括:指示单元,设置为在SPS的调度信息的第一个调度周期中指示向第二OBU发送SPS的调度信息和V2X业务数据;第二发送单元,设置为在第一个调度周期之后,按照第一个调度周期中所指示的发送资源发送V2X业务数据。
图6是根据本发明实施例的车联网业务的资源配置装置结构框图,该装置应用于路边单元RSU侧,如图6所示,该装置包括:第三配置模块62,设置为配置用于发送车联网V2X业务的发送资源的资源配置信息,第四配置模块64,与第三配置模块62耦合连接,设置为向车载单元OBU配置资源配置信息。
可选地,该第四配置模块62包括:第二接收单元,设置为接收OBU发送的用于请求发送资源的请求消息;第三发送单元,与第二接收单元耦合连接,设置为向OBU发送响应于请求消息的发送资源的资源配置信息。
对于本实施例中涉及到的发送资源可以包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对V2X业务数据进行资源调度所需要的信息;其中,该发送资源指示调度信息和V2X业务数据所需的资源,以及调度信息和V2X业务数据在一个资源周期内的发送次数。
需要说明的是,上述各个模块是可以通过软件或硬件来实现的,对于后者,可以通过以下方式实现,但不限于此:上述模块均位于同一处理器中;或者,上述模块分别位于多个处理器中。
下面结合本发明的可选实施例对本发明进行举例说明;
本本可选实施例提供了一种车联网业务发送的方法,包括:车载单元(On-Board Unit,简称为OBU)请求基站分配或者在资源池中选择车到到车V2X业务的发送资源,收到请求的基站向OBU发送V2X调度信息;OBU在发送资源的子帧特定位置发送V2X业务的资源调度信息,资源调度信息指示相同和/或不同子帧中V2X业务数据占用的资源;基站指示V2X调度信息和/或业务数据的发送次数。
为达到上述目的,本可选实施例方法的步骤包括:
步骤S301:OBU准备发送V2X业务,OBU获取V2X业务的发送资源;
其中,OBU准备发送的V2X业务包括周期性业务(Cooperative Awareness Message,简称为CAM)或事件触发的业务(Decentralized Environmental Notification Message,简称为DENM);该OBU有两种方式获取V2X业务的发送资源:调度或者自主选择,调度是指OBU向基站eNB发送请求,基站为OBU分配资源,自主选择是指OBU从基站已分配的或预配置的资源池中随机选择所需的资源。
发送资源包括:调度信息的资源和V2X业务资源,其中,该调度信息资源采用固定分配方式;具体资源分配过程为:基站eNB通过物理下行控制信道PDCCH/演进物理下行控制信道ePDCCH中的DCI format5发送V2X业务的资源配置,包括但不限于:时-频位置,调制与编码策略(Modulation and Coding Scheme,简称为MCS);该调度信息资源还可以采用子帧中静态分配方式:即在承载V2X业务的第一个子帧中固定的频域位置发送V2X调度信息,或者eNB在DCI-5中指示V2X调度信息所在的子帧、同样在上述子帧固定频域位置发送V2X调度信息。固定分配是指V2X调度信息位于固定位置:时域占满一个TTI,频域位置固定,除去CQI/DMRS/ACK/NACK等的频域位置,大小固定(RB起始,持续长度等固定),内容不够用0填充,图7是根据本发明可选实施例的V2X调度信息示意图。
解调参考信号(Demodulation Reference Signal,简称为DMRS)为了对抗V2X高速行车环境下的多普勒频移影响,采用以下改进:1)现有LTE PUSCH采用时域复用一个子帧发送2次DMRS,在本可选实施例中可增加发送次数到3-4次;2)频域复用(频域占一个子载波),DMRS时域占满一个子帧,一个子帧发送一次或两次。
OBU检测(采用特定RNTI检测)读取DCI-5的内容,并根据DCI-5的内容设置V2X调度信息的内容,图8是根据本发明可选实施例的SPS调度示意图,如图8所示,OBU发送的V2X调度信息与V2X业务复用在一个子帧中或者V2X调度信息同时指示其他V2X业务子帧的调度,V2X业务调度信息至少包括:时-频位置、调制编码方案MCS、目标OBU标识ID。
eNB可以选择动态调度或半持续调度(Semi Persistence Scheduling,简称为SPS),如根据业务需求,对CAM数据采用SPS,对DENM业务采用动态调度;如果采用SPS,eNB需要通过无线资源控制(Radio Resource Control,简称为RRC)信令指示SPS的周期,同时在DCI5中指示SPS激活/释放,OBU读取DCI-5后,在V2X调度信息中设置SPS激活/释放标
识,当SPS激活,在SPS周期中,V2X业务在相同的资源上调度,此时在第一个SPS周期中发送V2X调度信息而在后续SPS周期不需要发送V2X调度信息,当SPS释放/去激活;V2X采用动态调度;对于动态调度,每个V2X子帧可采用不同的资源配置,此时每个V2X业务子帧中的固定位置都有相应的V2X调度信息。
如果发送OBU在预设或eNB配置的资源池中自主选择发送资源,则发送OBU根据选择的资源设置V2X调度信息的内容。对于OBU自主选择:1)资源池不分配调度信息资源,该资源固定。2)OBU从资源池选择业务资源:包括1)不同优先级的资源池2)相同的资源池,采用概率选择。概率选择是指:eNB通过RRC信令发送概率参数Pt,OBU选择一个随机数Pc(0-1),如果Pc<Pt则OBU在资源池中随机选择一个资源用于V2X业务,否则OBU继续选择随机数Pc并重复上述过程直到可以选择资源。
如果一条V2X信息占用多个子帧,只在第一个子帧发送调度信息,该调度信息指示本子帧和剩余子帧中的资源配置,或者eNB指示V2X调度信息的时频位置,在调度信息中指示多个分配给V2X的子帧及子帧中的V2X业务资源配置。
OBU发送的调度信息和V2X业务在PC5空口或Uu空口发送。
OBU业务调度用于OBU位于eNB覆盖范围内,OBU自主选择资源可用于eNB覆盖范围内或覆盖范围外,对于eNB覆盖范围内,资源池由eNB配置,对于覆盖范围外,资源池预配置在OBU本地。
本可选实施例中的V2X业务包括以下至少一种:V2V,V2I,V2P,V2N.
步骤S302:基站指示V2X业务的发送次数。
其中,基站通过RRC信令指示V2X业务的重复发送次数,如通过***广播消息、RRC连接重配置等信令。重传次数为:0-3次,即发送1-4次。注意此处的重传是指增量冗余(Incremental Redundancy,简称为IR)重传,即针对相同的原始信息,每次发送的数据不完全相同,按照固定的IR版本发送,即按照版本0,2,3,1的顺序发送,接收方根据IR顺序将不同的IR版本合并,从而提高V2X业务的可靠性。对于V2X调度信息,eNB也可以指定重传次数,如0-1次。一般来说,对于CAM或周期性V2X信息,一个周期内重选次数可为:0-1次,而对于DENM或事件触发V2X信息,重选次数一般为0-3次。eNB指定重选的模式,即重传数据的资源配置,如果有重传,则发送OBU可在V2X调度信息中指示重传模式信息,或者eNB通过***广播消息指示。
如果发送OBU在预设或eNB配置的资源池中自主选择发送资源,则在资源池中指定V2X业务的发送次数。
V2X发送采用上行信道PUSCH发送,PUSCH的HARQ采用同步非自适应方式,即重传发生在相对于初始发送时刻的固定间隔位置,接收方已知重传的位置,为了减少上行信令负载,采用非自适应方式,即重传和初始传输采用相同的资源块RB、MCS、功率等参数。
步骤S303:接收方OBU检测可能存在V2X调度信息和/或V2X业务的子帧;
其中,根据eNB指示的接收资源池,在接收资源池中检测,或者已收到的V2X调度信息中指示的子帧;在V2X调度信息中包括目标标识,如目标组标识,接收OBU判断自身是否属于目标标识,如果是则接收所需的V2X业务,否则继续检测。
OBU为RRC_Connected或RRC_Idle模式。需要指出的是:资源池包括发送资源池和接收资源池。
此外,本可选实施例中涉及到的OBU相当于用户设备UE,基站eNB可作为RSU,当静止UE作为RSU时,本可选实施例适用于V2I业务。
下面结合本可选实施例的具体实施例和附图进行详细的说明;
实施例一:
本实施例是针对基站覆盖内OBU自主选择资源发送V2X业务的场景;图9是根据本发明可选实施例一方法的流程图,如图9所示,该实施例的步骤包括:
步骤S901,基站分配资源池;
其中,基站通过***广播消息或专用RRC消息通知分配的资源池,资源池包括以下至少一种资源:调度信息时频资源,业务数据时频资源,V2X调度信息和/或业务重发次数,发送概率,调度信息MCS,业务MCS,SPS调度周期。
考虑到调度信息一般在子帧中固定频域位置发送,则在资源池中可指示调度信息的时域位置。
此外,该资源池也可以包括一个或多个,对于多个资源池可分别对应不同优先级的V2X业务,不同资源池之间不能重叠,资源池的类型包括:发送资源池和接收资源池,该发送资源池可以是接收资源池的子集,即接收资源池包括发送资源池。
步骤S902,基站指示OBU自主选择资源;
其中,基站通过***广播消息或专用RRC消息指示OBU自主选择资源。
步骤S903,OBU选择资源;
其中,OBU根据业务属性在相应的发送资源池中选择资源。
步骤S904,OBU发送V2X调度信息和V2X业务。
其中,OBU设置V2X调度信息的内容,其中,调度信息包括以下至少一种:V2X业务时频位置,V2X业务MCS,目标OBU标识;此外,如果采用SPS调度,在该调度信息中可以还包括:SPS激活/去激活标识。
调度信息和业务在相同子帧或不同子帧中发送,如果在不同子帧发送,在调度信息中还
包括:V2X业务的子帧配置。
OBU根据基站指示发送V2X调度信息和业务一次或多次,如果多次发送,则重发的模式包括:重发的IR版本,重发资源等参数,该模式的参数都由eNB指定,在初始发送的调度信息中进一步包括:重发模式参数。
步骤S905,目标OBU接收V2X业务。
其中,目标OBU检测接收资源池,或者目标OBU收到调度信息后,根据调度信息指示检测相应子帧,或者目标OBU根据基站的***广播消息指示检测相应的子帧。
如果目标OBU检测到所需的调度信息,则继续接收相应的V2X业务。所需的调度信息是指目标OBU判断是否属于调度信息中的目标OBU标识,如果是,则为所需调度信息,其中目标OBU标识可为目标OBU组标识或目标OBU ID。
实施例二:
本实施例是针对RSU覆盖外OBU发送V2X业务的场景;图10是根据本发明可选实施例二方法的流程图,如图10所示,该实施例方法的步骤包括:
步骤S1001,预分配V2X资源池。
其中,预分配在OBU处于基站覆盖内时或OBU出厂时存储在OBU本地,如OBU存储卡中;预分配一般由基站或网管完成。资源池包括:发送资源池和接收资源池。其中发送资源池用于在基站覆盖外发送V2X业务,接收资源池用于OBU在基站覆盖外监听V2X业务。
具体的资源池内容与实施例一中步骤S801中涉及到的类似。
步骤S1002,OBU选择资源。
步骤S1003,OBU发送V2X调度信息和业务数据。
其中,本步骤S1003与步骤S904相同,在此不再赘述。
步骤S1004,目标OBU接收V2X业务。
其中,本步骤S1004与步骤S905相同,在此不再赘述。
实施例三:
本实施例是针对RSU覆盖内OBU采用动态调度发送V2X业务的场景;图11是根据本发明可选实施例三方法的流程图,如图11所示,本实施例方法的步骤包括:
步骤S1101,OBU请求基站分配V2X资源。
其中,OBU有V2X信息需要发送,OBU通过RRC信令向基站发送指示信息,指示信息用于请求基站分配资源。
步骤S1102,基站分配V2X通信资源。
其中,基站分配V2X调度信息资源和V2X业务资源。
步骤S1103,基站发送调度信息。
其中,基站通过PDCCH上的DCI format5发送调度信息,并采用专用的RNTI对PDCCH的CRC进行掩码操作。
其中,基站在发送调度信息之前,通过广播消息或专用RRC信令指示调度信息的时域位置。
步骤S1104,OBU检测接收基站发送的调度信息。
其中,OBU在调度信息的时域位置用专用RNTI检测PDCCH的CRC,如果检测成功,则为所需的调度信息,OBU读取DCI-5中的调度信息。
步骤S1105,OBU发送V2X调度信息和业务。
其中,本步骤S1105与步骤S904类似,区别是这里的V2X调度信息为动态调度信息,即在每个V2X业务所在的子帧都可能存在,在V2X业务初始发送的第一个子帧必须存在调度信息,如果一个V2X业务占用多个子帧,则可以只在首个子帧中发送调度信息并在调度信息中指示后续子帧的配置,或者根据调度信息重发配置信息,在后续子帧重发调度信息。
步骤S1106,目标OBU接收V2X业务。
其中,本步骤S1106与步骤S905类似,需要指出的是:因为采用动态调度,因此目标OBU需要检测每个可能存在V2X业务或调度信息的子帧。
实施例四:
本实施例是针对RSU覆盖内采用半持续调度发送V2X业务的场景;图12是根据本发明可选实施例四方法的流程图,如图12所示,本实施例方法的步骤包括:
步骤S1201,OBU请求基站分配资源。
步骤S1202,基站分配资源并通知OBU。
其中,基站通过RRC信令发送SPS调度周期,基站通过DCI-5发送SPS激活指示和SPS资源配置信息。
步骤S1203,OBU判断SPS调度是否激活,如果是,转向步骤S1204,否则转向步骤S1205。
其中,OBU根据基站发送的DCI-5信息中SPS调度信息判断是否激活SPS,DCI-5中可采用特定的比特指示SPS激活。
步骤S1204,OBU采用SPS发送V2X调度信息和业务数据。
其中,SPS激活,OBU在第一个SPS周期中根据DCI-5的指示发送V2X调度信息和V2X业务,并在后续SPS周期,针对相同业务在相同资源发送V2X业务,不发送调度信息。
其中,OBU根据基站指示进行重发。转向步骤S1206,流程结束。
步骤S1205,目标OBU接收V2X业务;
其中,OBU检测到SPS去激活,则采用动态调度发送V2X调度信息和业务。
步骤S1206,OBU动态发送V2X调度信息和业务。
实施例五
图13是本发明可选实施例五的发送V2X业务的装置结构框图,如图13所示,包括:
第一接收器1302,设置为接收OBU发送的V2X业务请求信息;
第一发送器1304,设置为向OBU60发送调度信息和业务资源配置消息,还设置为向OBU指示V2X业务发送次数,激活/去激活SPS调度;
第一处理器1306,设置为根据OBU的V2X业务请求,确定调度资源,还设置为选择V2X发送次数,何时激活/去激活SPS调度,采用特定RNTI对DCI-5的CRC进行加扰。
其中,该装置可以是包括LTE中的基站或具有RSU能力的静止UE。
实施例六
图14是根据本发明可选实施例的发送V2X业务的装置的结构框图,如图14所示,包括:
第二接收器1402,设置为接收基站发送的资源V2X配置信息,还设置为接收OBU发送的V2X调度信息和业务数据;
第二发送器1404,设置为向基站发送V2X业务请求,还设置为发送V2X调度信息和业务数据;
第二处理器1406,设置为选择V2X资源,以及检测V2X调度。
其中,该装置可以是包括LTE中的OBU或DSRC中的OBU,其中LTE中的OBU为E-UTRAN中的UE或移动终端。
本发明的实施例还提供了一种存储介质。可选地,在本实施例中,上述存储介质可以被设置为存储用于执行以下步骤的程序代码:
步骤S1:第一车载单元OBU获取用于发送车联网V2X业务的发送资源;
其中,发送资源包括:发送V2X业务所需要的资源和发送调度信息所需要的资源,调度信息用于指示对V2X业务进行资源调度所需要的信息;
步骤S2:第一OBU在发送资源上向第二OBU发送调度信息和V2X业务。
可选地,在本实施例中,上述存储介质可以包括但不限于:U盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地,本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例,本实施例在此不再赘述。
显然,本领域的技术人员应该明白,上述的本发明的各模块或各步骤可以用通用的计算装置来实现,它们可以集中在单个的计算装置上,或者分布在多个计算装置所组成的网络上,可选地,它们可以用计算装置可执行的程序代码来实现,从而,可以将它们存储在存储装置中由计算装置来执行,并且在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤,或者将它们分别制作成各个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样,本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
通过本发明实施例,采用第一车载单元OBU获取用于发送车联网V2X业务的发送资源,而该发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,调度信息用于指示对V2X业务数据进行资源调度所需要的信息,进而在第一OBU在发送资源上向第二OBU发送调度信息和V2X业务数据,即可以通过获取到的发送资源同时发送调度信息和V2X业务数据,解决了相关技术中的D2D技术只能分开发送资源调度信息和V2X业务数据的问题,填补了相关技术的空白。
Claims (28)
- 一种车联网业务的发送方法,包括:第一车载单元OBU获取用于发送车联网V2X业务的发送资源,其中,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息;所述第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据;其中,所述调度信息和所述V2X业务数据在发送资源中相同的子帧进行频域复用,所述调度信息指示在相同和/或不同子帧中对所述V2X业务数据进行资源配置。
- 根据权利要求1所述的方法,其中,在所述第一OBU在路边单元RSU覆盖范围内时,所述第一车载单元OBU获取用于发送车联网V2X业务的发送资源包括:所述第一OBU向所述RSU发送用于请求所述发送资源的请求消息;所述第一OBU接收所述RSU响应于所述请求消息发送的所述发送资源的资源配置信息;或,所述第一OBU从所述RSU预配置的第一发送资源池中获取所述发送资源;其中,所述发送资源指示所述调度信息和V2X业务数据所需的资源,以及所述调度信息和V2X业务数据在一个资源周期内的发送次数。
- 根据权利要求2所述的方法,其中,在所述第一OBU在路边单元RSU覆盖范围内时,所述第一OBU发送的调度信息和V2X业务数据由所述第二OBU在根据预配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和V2X业务数据后,所述第二OBU根据预定义的规则合并多次接收的V2X业务。
- 根据权利要求1所述的方法,其中,在所述第一OBU在路边单元RSU覆盖范围外时,所述第一车载单元OBU获取用于发送车联网V2X业务的发送资源包括:所述第一OBU从预配置在所述OBU中的用于存储所述发送资源的第二发送资源池中选择所述发送资源;其中,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
- 根据权利要求4所述的方法,其中,在所述第一OBU在路边单元RSU覆盖范围外时,所述第一OBU发送的调度信息和V2X业务数据由所述第二OBU在根据预配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和V2X业务数据后,所述第二OBU根据预定义的规则合并多次接收的V2X业务。
- 根据权利要求2或4所述的方法,其中,所述发送资源还包括以下至少之一:所述V2X业务的发送次数、资源周期、半持续调度SPS的调度周期。
- 根据权利要求6所述的方法,其中,所述调度信息的资源包括:所述调度信息的时频资 源;所述V2X业务数据的资源包括:所述V2X业务数据的时频资源、所述V2X业务数据的MCS。
- 根据权利要求7所述的方法,其中,所述调度信息包括:所述V2X业务的时频位置,所述V2X业务数据的MCS和所述第二OBU的标识;所述V2X业务数据包括以下至少之一:车辆到车辆V2V业务、车辆到基础设施V2I业务、车辆到行人V2P业务或车辆到网络V2N业务。
- 根据权利要求1所述的方法,其中,在所述调度信息为动态调度信息时,在所述第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据之前,所述方法还包括:在所述V2X业务只占用一个子帧时,所述第一OBU在每个所述V2X业务数据所在的子帧中配置所述调度信息;或,在所述V2X业务占用多个子帧时,所述第一OBU在所述V2X业务数据的首个或多个子帧中配置所述调度信息。
- 根据权利要求6所述的方法,其中,在所述调度信息为半持续调度SPS类型的调度信息时,所述第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据包括:所述第一OBU在所述SPS的调度信息的第一个调度周期中指示向所述第二OBU发送所述SPS的调度信息和所述V2X业务数据;并在所述第一个调度周期之后,按照所述第一个调度周期中所指示的发送资源发送V2X业务数据。
- 一种车联网业务的资源配置方法,包括:路边单元RSU配置车联网V2X业务的发送资源池和接收资源池的资源配置信息;所述RSU向车载单元OBU配置所述资源配置信息。
- 根据权利要求11所述的方法,其中,所述OBU在所述RSU覆盖范围内时,所述RSU向车载单元OBU配置所述资源配置信息包括:所述RSU接收OBU发送的用于请求所述发送资源的请求消息;所述RSU向所述OBU发送响应于所述请求消息的所述发送资源的资源配置信息。
- 根据权利要求12所述的方法,其中,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息。
- 根据权利要求13所述的方法,其中,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
- 一种车联网业务的发送装置,应用于第一车载单元OBU侧,包括:获取模块,设置为获取用于发送车联网V2X业务的发送资源,其中,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息;第一发送模块,设置为在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据;其中,所述调度信息和所述V2X业务数据在发送资源中相同的子帧进行频域复用,所述调度信息指示在相同和/或不同子帧中对所述V2X业务数据进行资源配置。
- 根据权利要求15所述的装置,其中,在所述第一OBU在路边单元RSU覆盖范围内时,所述获取模块包括:第一发送单元,设置为向所述RSU发送用于请求所述发送资源的请求消息;第一接收单元,设置为接收所述RSU响应于所述请求消息发送的所述发送资源的资源配置信息;或,获取单元,设置为从所述RSU预配置的第一发送资源池中获取所述发送资源;其中,所述发送资源指示所述调度信息和V2X业务数据所需的资源,以及所述调度信息和V2X业务数据在一个资源周期内的发送次数。
- 根据权利要求16所述的装置,其中,在所述第一OBU在路边单元RSU覆盖范围内时,所述第一OBU发送的调度信息和业务数据由所述第二OBU在根据所述RSU配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和V2X业务数据后,所述第二OBU根据预定义的规则合并多次接收的V2X业务。
- 根据权利要求15所述的装置,其中,在第一OBU在路边单元RSU覆盖范围外时,所述获取模块包括:选择单元,设置为从预配置在所述OBU中的用于存储所述发送资源的第二资源池中选择所述发送资源;其中,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
- 根据权利要求18所述的装置,其中,在所述第一车载单元OBU在路边单元RSU覆盖范围外时,所述第一OBU发送的调度信息和V2X业务数据由所述第二OBU在根据预配置的接收资源池进行检测之后再接收,其中,在多次收到所述第一OBU发送的调度信息和业务数据后,所述第二OBU根据预定义的规则合并多次接收的V2X业务。
- 根据权利要求16或18所述的装置,其中,所述发送资源还包括以下至少之一:所述V2X业务的发送次数、资源周期、半持续调度SPS的调度周期。
- 根据权利要求20所述的装置,其中,所述调度信息的资源包括:所述调度信息的时频资源;所述V2X业务数据的资源包括:所述V2X业务数据的时频资源、所述V2X业务数据的MCS。
- 根据权利要求21所述的装置,其中,所述调度信息包括:所述V2X业务的时频位置,所述V2X业务数据的MCS和所述第二OBU的标识;所述V2X业务数据包括以下至少之一:车辆到车辆V2V业务、车辆到基础设施V2I业务、车辆到行人V2P业务或车辆到网络V2N业务。
- 根据权利要求15所述的装置,其中,在所述调度信息为动态调度信息时,在第一OBU在所述发送资源上向第二OBU发送所述调度信息和所述V2X业务数据之前,所述装置还包括:第一配置模块,设置为在所述V2X业务只占用一个子帧时,在每个所述V2X业务数据所在的子帧中配置所述调度信息;或,第二配置模块,设置为在所述V2X业务占用多个子帧时,在所述V2X业务数据的首个或多个子帧中配置所述调度信息。
- 根据权利要求20所述的装置,其中,在所述调度信息为半持续调度SPS类型的调度信息时,所述第一发送模块包括:指示单元,设置为在所述SPS的调度信息的第一个调度周期中指示向所述第二OBU发送所述SPS的调度信息和所述V2X业务数据;第二发送单元,设置为在所述第一个调度周期之后,按照所述第一个调度周期中所指示的发送资源发送V2X业务数据。
- 一种车联网业务的资源配置装置,应用于路边单元RSU侧,包括:第三配置模块,设置为配置车联网V2X业务的发送资源池和接收资源池的资源配置信息;第四配置模块,设置为向车载单元OBU配置所述资源配置信息。
- 根据权利要求25所述的装置,其中,所述第四配置模块包括:第二接收单元,设置为接收OBU发送的用于请求所述发送资源的请求消息;第三发送单元,设置为向所述OBU发送响应于所述请求消息的所述发送资源的资源配置信息。
- 根据权利要求26所述的装置,其中,所述发送资源包括:发送V2X业务中的V2X业务数据和调度信息所需要的资源,所述调度信息用于指示对所述V2X业务数据进行资源调度所需要的信息。
- 根据权利要求27所述的装置,其中,所述发送资源指示所述调度信息和所述V2X业务数据所需的资源,以及所述调度信息和所述V2X业务数据在一个资源周期内的发送次数。
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US10701726B2 (en) | 2020-06-30 |
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