WO2017128543A1

WO2017128543A1 - Resource scheduling method and apparatus for vehicle communication, and terminal and base station

Info

Publication number: WO2017128543A1
Application number: PCT/CN2016/080826
Authority: WO
Inventors: 郑倩; 雷艺学; 张云飞
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2016-01-29
Filing date: 2016-04-29
Publication date: 2017-08-03
Also published as: CN105681439A

Abstract

Provided are a resource scheduling method and resource scheduling apparatus for vehicle communication, and a terminal and a base station. The resource scheduling method for vehicle communication comprises: acquiring a configuration parameter, allocated by a base station, for performing semi-static scheduling on a secondary link; according to the configuration parameter, determining a time-frequency resource for periodically transmitting a vehicle communication message; and based on the time-frequency resource, periodically transmitting the vehicle communication message. According to the technical solution of the present invention, when a terminal performs a V2V service, a base station can configure a time-frequency resource for the terminal by using a semi-static scheduling mechanism, and the overheads of a PDCCH can thus be reduced, so that more resources are used by the base station for scheduling other terminals, thereby improving the resource utilization efficiency.

Description

Resource scheduling method, device, terminal and base station for vehicle communication

The present application claims priority to Chinese Patent Application No. 201610064326.X, entitled "Resource Scheduling Method, Apparatus, Terminal and Base Station for Vehicle Communication", which is filed on January 29, 2016. The entire contents are incorporated herein by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a resource scheduling method for vehicle communication, a resource scheduling device for vehicle communication, a terminal, and a base station.

Background technique

V2X (Vehicle to X, vehicle-to-target communication) is a project approved by 3GPP RAN#68, and mainly studies vehicle data transmission scheme based on 3GPP communication protocol. V2X includes V2V (Vehicle to Vehicle), V2P (Vehicle to Pedestrian), V2I (Vehicle to Infrastructure), and so on. In principle, V2V communication can realize V2V message transmission through Uu interface (interface between user equipment and base station), PC5 interface (interface between user equipment and user equipment) or Uu interface and PC5 interface. Wherein, the scheme for implementing V2V message transmission through the PC5 interface is as shown in FIG. 1. The source vehicle 102 (ie, the V2V message transmitting end) passes through the sublink (Sidelink, SL) to the target vehicle (such as the vehicle 104 shown in FIG. 1). The vehicle 106 and the vehicle 108) send a V2V message.

Currently, the D2D (Device to Device) resource allocation method includes two modes, a scheduling mode and a resource pool mode. In the scheduling mode, resources of D2D communication are allocated by a base station (eNB). However, the current resource allocation method based on the eNB scheduling mode of the Rel-13D2D is a dynamic scheduling mechanism, that is, the SL grant is re-issued for the UE (User Equipment) in each TTI (Transmission Time Interval). Indicates the allocated time-frequency resource.

In theory, the current dynamic scheduling mechanism does not apply to all V2V service classes. type. As shown in Table 1, some V2V services are periodic broadcast messages with small data packets and basically the same size, or periodic broadcast messages triggered by events. If dynamic scheduling mechanisms are adopted, the PDCCH will be added. The overhead of the Physical Downlink Control Channel (physical downlink control channel) may lead to a problem of low resource utilization efficiency.

Table 1

Therefore, how to reduce the overhead of vehicle communication to the PDCCH to avoid using a dynamic scheduling mechanism to lead to low resource utilization efficiency has become a technical problem to be solved.

Summary of the invention

The present invention is based on at least one of the above technical problems, and proposes a new resource scheduling scheme for vehicle communication, so that when the terminal performs V2V service, the base station can adopt a semi-static scheduling mechanism to configure time-frequency resources to the terminal. In addition, the overhead of the PDCCH can be reduced, so that the base station uses more resources for scheduling other terminals, thereby improving resource utilization efficiency.

In view of this, according to the first aspect of the present invention, a resource scheduling method for vehicle communication is provided, which includes: acquiring a configuration parameter allocated by a base station for semi-persistent scheduling on a secondary link; according to the configuration parameter, Determining a time-frequency resource for periodically transmitting a vehicle communication message; periodically transmitting the vehicle communication message based on the time-frequency resource.

In this technical solution, the terminal acquires configuration parameters for semi-persistent scheduling on the secondary link allocated by the base station, to determine time-frequency resources for periodically transmitting the vehicle communication message according to the configuration parameter, and periodically according to the determined time-frequency resource. Transmitting vehicle communication messages so that the terminal is performing V2V During the service, the base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for the base station. Scheduling other terminals improves resource utilization efficiency and solves the problem of low resource utilization efficiency caused by the use of semi-static scheduling mechanisms in related technologies.

In the foregoing technical solution, the step of acquiring the configuration parameters of the semi-persistent scheduling on the secondary link that are allocated by the base station, specifically includes:

Receiving, by the base station, configuration parameters allocated according to message characteristics of a vehicle communication service performed by the terminal; or

And transmitting, to the base station, a configuration request of a semi-persistent scheduling, and receiving, by the base station, a configuration parameter allocated by a message feature of the vehicle communication service performed by the terminal included in the configuration request.

In this technical solution, on the one hand, the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station to trigger the base station to allocate configuration parameters to the terminal. .

The message characteristics of the vehicle communication service include: whether the vehicle communication message is a periodic message, a type of the vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.

In any of the above technical solutions, preferably, the method further includes:

Receiving the configuration parameter re-allocated by the base station; or sending a semi-persistently scheduled reconfiguration request to the base station, and receiving the configuration parameter that the base station re-allocates to the terminal according to the reconfiguration request;

And determining, according to the configuration parameter re-allocated by the base station, time-frequency resources for periodically transmitting the vehicle communication message, and periodically transmitting the vehicle communication message based on the re-determined time-frequency resource.

In this technical solution, on the one hand, if the base station needs to adjust the configuration parameters allocated to the terminal, the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed) to trigger the base station to re-allocate configuration parameters to the terminal.

In any one of the foregoing technical solutions, the step of determining a time-frequency resource for periodically transmitting a vehicle communication message according to the configuration parameter, specifically includes:

Monitoring the physical downlink control information sent by the base station, and demodulating the time-frequency resource according to an RNTI (Radio Network Temporary Identity) of the sub-link communication performed by the terminal included in the configuration parameter;

Determining a usage period of a time-frequency resource for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.

Specifically, the terminal can monitor the physical downlink control information sent by the base station by monitoring the PDCCH or the e-PDCCH (Enhanced PDCCH, enhanced physical downlink control channel).

Stopping using the time-frequency resource to transmit the vehicle communication message when the duration of the vehicle communication message reaches a predetermined length of time; or

And stopping receiving the vehicle communication message by using the time-frequency resource when receiving the indication information of the time-frequency resource sent by the base station.

In this technical solution, on the one hand, when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and the base station also determines that the predetermined duration is reached according to the duration of the vehicle communication message. The time-frequency resource can be released. On the other hand, the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.

According to a second aspect of the present invention, a resource scheduling method for vehicle communication is further provided, comprising: allocating a configuration parameter for semi-persistent scheduling on a secondary link to a terminal; and transmitting the configuration parameter to the terminal Transmitting, to the terminal, physical downlink control information, so that the terminal determines a time-frequency resource for periodically transmitting a vehicle communication message based on the configuration parameter and the physical downlink control information.

In the technical solution, the base station allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal, so that the terminal determines the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, so that when the terminal performs the V2V service, The base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for scheduling other. The terminal improves the resource utilization efficiency and solves the problem that the semi-static scheduling mechanism in the related technology leads to low resource utilization efficiency.

In the foregoing technical solution, preferably, the step of allocating, to the terminal, configuration parameters for performing semi-persistent scheduling on the secondary link, specifically includes:

Assigning the configuration parameter to the terminal according to a message feature of the vehicle communication service performed by the terminal; or

Receiving a semi-persistent scheduling configuration request sent by the terminal, and allocating the configuration parameter to the terminal according to a message feature of the vehicle communication service performed by the terminal included in the configuration request.

In this technical solution, on the one hand, the base station can actively allocate configuration parameters to the terminal according to the previously known message characteristics; on the other hand, the terminal can also send a semi-persistent scheduling configuration request to the base station, when the base station receives the configuration request. Assign configuration parameters to the terminal.

Relocating the configuration parameter to the terminal when the configuration parameter allocated to the terminal needs to be adjusted, and transmitting the re-allocated configuration parameter to the terminal; or

Receiving a semi-persistent scheduling reconfiguration request sent by the terminal, re-allocating the configuration parameter allocated to the terminal according to the reconfiguration request, and sending the re-allocated configuration parameter to the terminal.

In this technical solution, on the one hand, if the base station needs to adjust the configuration parameters allocated to the terminal, the re-allocated configuration parameters may be actively sent to the terminal; on the other hand, the terminal may also send a reconfiguration request to the base station (for example, the terminal performs The message characteristics of the V2V service are changed. The base station re-assigns the configuration parameters to the terminal when receiving the reconfiguration request.

In any of the foregoing technical solutions, before the step of allocating the configuration parameters for semi-persistent scheduling on the secondary link to the terminal, the method further includes:

Determining whether to permit the terminal to use a semi-static scheduling mechanism on the secondary link according to the message characteristics of the vehicle communication service performed by the terminal;

If it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link, the step of assigning the configuration parameters to the terminal for semi-persistent scheduling on the secondary link is performed.

In this technical solution, by determining whether to permit the terminal to use semi-persistent scheduling on the secondary link The mechanism can accurately determine the terminal capable of semi-persistent scheduling. Specifically, if the message characteristic of the vehicle communication service performed by the terminal indicates that the vehicle communication message is not a periodic message, it is determined that the terminal is not allowed to use the semi-static scheduling mechanism on the secondary link; and if the terminal performs the vehicle communication service message The feature indicates that the vehicle communication message is a periodic message and the size of the message is below a certain threshold, then it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link.

Release the time-frequency resource when the duration of the vehicle communication message reaches a predetermined length of time; or

Sending, to the terminal, indication information for releasing the time-frequency resource, and releasing the time-frequency resource, where the indication information is used to indicate that the terminal stops using the time-frequency resource to transmit the vehicle communication message.

In this technical solution, on the one hand, when determining that the duration of the vehicle communication message reaches a predetermined duration, the terminal may stop using the time-frequency resource allocated by the base station, and at this time, the base station determines that the predetermined duration is reached according to the duration of the vehicle communication message, and may The time-frequency resource is released. On the other hand, the base station can actively determine whether the time-frequency resource allocated to the terminal needs to be released. If the time-frequency resource allocated to the terminal needs to be released, the corresponding indication information is sent to the terminal.

According to a third aspect of the present invention, a resource scheduling apparatus for vehicle communication is further provided, comprising: an obtaining unit, configured to acquire configuration parameters allocated by a base station for semi-persistent scheduling on a secondary link; And determining, according to the configuration parameter, a time-frequency resource for periodically transmitting a vehicle communication message; and a transmitting unit, configured to periodically transmit the vehicle communication message based on the time-frequency resource.

In this technical solution, the terminal acquires configuration parameters for semi-persistent scheduling on the secondary link allocated by the base station, to determine time-frequency resources for periodically transmitting the vehicle communication message according to the configuration parameter, and periodically according to the determined time-frequency resource. The vehicle communication message is transmitted so that the terminal can perform the V2V service, and the base station can configure the time-frequency resource to the terminal by using a semi-persistent scheduling mechanism, thereby achieving the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead on the PDCCH. In order to enable the base station to use more resources for scheduling other terminals, the resource utilization efficiency is improved, and the problem that the resource utilization efficiency is low due to the semi-static scheduling mechanism in the related art is solved.

In the above technical solution, preferably, the acquiring unit includes:

a first receiving unit, configured to receive a configuration parameter that is allocated by the base station according to a message feature of a vehicle communication service performed by the terminal; or

And a first interaction unit, configured to send a semi-persistent scheduling configuration request to the base station, and receive a configuration parameter that is allocated by the base station according to a message feature of the vehicle communication service performed by the terminal included in the configuration request.

In any one of the foregoing technical solutions, the method further includes: a second receiving unit, configured to receive the configuration parameter that is re-allocated by the base station; or a second interaction unit, configured to send a semi-persistent scheduling to the base station Reconfiguring the request, and receiving the configuration parameter that the base station re-allocates to the terminal according to the reconfiguration request;

The determining unit is further configured to: re-determine a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station;

The transmitting unit is further configured to periodically transmit the vehicle communication message based on a time-frequency resource that is determined by the determining unit.

In any of the above technical solutions, preferably, the determining unit is specifically configured to:

Monitoring the physical downlink control information sent by the base station, and demodulating the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;

Specifically, the terminal may monitor the PDCCH or the e-PDCCH to monitor the sending by the base station. Physical downlink control information.

In any of the above technical solutions, preferably, the transmission unit is further configured to:

According to a fourth aspect of the present invention, a resource scheduling apparatus for vehicle communication is further provided, comprising: an allocating unit, configured to allocate, to a terminal, configuration parameters for semi-persistent scheduling on a secondary link; and a sending unit, configured to: And sending the configuration parameter to the terminal, and configured to send physical downlink control information to the terminal, so that the terminal determines, according to the configuration parameter and the physical downlink control information, that the vehicle communication message is periodically transmitted. Time-frequency resources.

In the above technical solution, preferably, the allocating unit is specifically configured to:

In this technical solution, on the one hand, the base station can take the initiative according to the message features that have been known in advance. The terminal allocates configuration parameters to the terminal. On the other hand, the terminal may also send a semi-persistent scheduling configuration request to the base station, and the base station allocates configuration parameters to the terminal when receiving the configuration request.

In any of the above technical solutions, preferably, the allocating unit is further configured to:

a determining unit, configured to determine, according to a message feature of the vehicle communication service performed by the terminal, whether to permit the terminal to use a semi-static scheduling mechanism on the secondary link before the allocation unit allocates the configuration parameter to the terminal ;

The allocating unit is specifically configured to perform an operation of allocating the configuration parameter to the terminal when the determining unit determines that the terminal is permitted to use the semi-static scheduling mechanism on the secondary link.

In this technical solution, by determining whether the terminal is permitted to use the semi-persistent scheduling mechanism on the secondary link, the terminal capable of semi-persistent scheduling can be accurately determined. Specifically, if the message characteristic of the vehicle communication service performed by the terminal indicates that the vehicle communication message is not a periodic message, it is determined that the terminal is not allowed to use the semi-static scheduling mechanism on the secondary link; and if the terminal performs the vehicle communication service message The feature indicates that the vehicle communication message is a periodic message and the size of the message is below a certain threshold, then it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link.

a resource release unit, configured to: when the duration of the vehicle communication message reaches a predetermined duration, Release the time-frequency resource; or

a processing unit, configured to send, to the terminal, indication information for releasing the time-frequency resource, and release the time-frequency resource, where the indication information is used to instruct the terminal to stop using the time-frequency resource to transmit the vehicle communication Message.

According to a fifth aspect of the present invention, there is also provided a terminal comprising a communication bus, an input device, an output device, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the input device, the output device, the memory, and the processor;

The input device is configured to acquire, by the base station, configuration parameters that are semi-statically scheduled on the secondary link;

The output device is configured to transmit a vehicle communication message;

The program stores a set of program codes, and the terminal calls the program code stored in the memory to perform the following operations:

The input device acquires configuration parameters allocated by the base station for semi-persistent scheduling on the secondary link;

Determining, by the processor, a time-frequency resource for periodically transmitting a vehicle communication message according to the configuration parameter;

The output device periodically transmits the vehicle communication message based on the time-frequency resource.

Optionally, the step of acquiring, by the input device, the configuration parameter that is configured by the base station to perform semi-persistent scheduling on the secondary link, specifically includes:

The input device receives configuration parameters allocated by the base station according to message characteristics of a vehicle communication service performed by the terminal; or

The output device sends a semi-persistent scheduling configuration request to the base station, and the input device receives a configuration parameter that is allocated by the base station according to a message feature of a vehicle communication service performed by a terminal included in the configuration request.

Optionally, the message characteristics of the vehicle communication service include:

Whether the vehicle communication message is a periodic message, a type of vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.

Optionally, the input device receives the configuration parameter re-allocated by the base station; or the output device sends a semi-persistent scheduling reconfiguration request to the base station, where the input device receives the base station according to the weight Configuring the configuration parameter that is requested to be re-allocated to the terminal;

The processor re-determining a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station, and the output device periodically transmits the time-frequency resource based on the re-determined time-frequency resource Vehicle communication message.

Optionally, the determining, by the processor, the step of periodically transmitting the time-frequency resource of the vehicle communication message according to the configuration parameter, specifically:

The processor monitors the physical downlink control information sent by the base station, and demodulates the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;

The processor determines a usage period of a time-frequency resource for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.

Optionally, it also includes:

The output device stops transmitting the vehicle communication message using the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration; or

When the input device receives the indication information of the time-frequency resource that is sent by the base station, the output device stops transmitting the vehicle communication message by using the time-frequency resource.

According to a sixth aspect of the present invention, a base station is further provided, comprising a communication bus, an input device, an output device, a memory, and a processor, wherein:

The output device is configured to send configuration parameters and a physical downlink control message to the terminal;

The program stores a set of program codes, and the base station calls program code stored in the memory to perform the following operations:

The processor allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal;

The output device sends the configuration parameter to the terminal;

The output device sends physical downlink control information to the terminal, so that the terminal determines a time-frequency resource for periodically transmitting a vehicle communication message based on the configuration parameter and the physical downlink control information.

Optionally, the step of the processor assigning, to the terminal, the semi-persistent scheduling configuration parameter on the secondary link, specifically includes:

The processor assigns the configuration parameter to the terminal according to a known message feature of the vehicle communication service performed by the terminal; or

The input device receives a semi-persistent scheduling configuration request sent by the terminal, and the processor allocates the configuration parameter to the terminal according to a message feature of a vehicle communication service performed by the terminal included in the configuration request.

Optionally, the processor re-allocates the configuration parameter to the terminal when the configuration parameter allocated to the terminal needs to be adjusted, and the output device sends the re-allocated configuration parameter to the Terminal; or

Receiving, by the input device, a semi-persistent scheduling reconfiguration request sent by the terminal, the processor re-allocating the configuration parameter allocated to the terminal according to the reconfiguration request, and the output device reassigns the Configuration parameters are sent to the terminal.

Optionally, the processor performs the following operations before the step of allocating the configuration parameters to the terminal for semi-persistent scheduling on the secondary link:

Determining, according to a message feature of the vehicle communication service performed by the terminal, whether the terminal is permitted to use a semi-static scheduling mechanism on the secondary link;

If it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link, the processor performs the step of assigning to the terminal configuration parameters for semi-persistent scheduling on the secondary link.

Optionally, the processor releases the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration; or

The output device sends the indication information for releasing the time-frequency resource to the terminal, the processor releases the time-frequency resource, and the indication information is used to indicate that the terminal stops using the time-frequency resource to transmit the Vehicle communication message.

Through the foregoing technical solution, when the terminal performs the V2V service, the base station can adopt a semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, thereby reducing the PDCCH overhead. In order to enable the base station to use more resources for scheduling other terminals, the resource utilization efficiency is improved.

DRAWINGS

FIG. 1 is a schematic diagram showing V2V message transmission through a PC5 interface;

2 shows a schematic flow chart of a resource scheduling method for vehicle communication in accordance with one embodiment of the present invention;

3 shows a schematic block diagram of a resource scheduling device for vehicle communication in accordance with one embodiment of the present invention;

Figure 4 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention;

FIG. 5 shows a schematic flow chart of a resource scheduling method for vehicle communication according to another embodiment of the present invention; FIG.

6 shows a schematic block diagram of a resource scheduling apparatus for vehicle communication in accordance with another embodiment of the present invention;

Figure 7 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention;

FIG. 8 is a flowchart showing a process of an initialization phase of a semi-static scheduling mechanism according to an embodiment of the present invention; FIG.

FIG. 9 is a flowchart showing a process of an activation phase of a semi-static scheduling mechanism according to an embodiment of the present invention; FIG.

FIG. 10 is a flowchart showing a process of a failure phase of a semi-static scheduling mechanism according to an embodiment of the present invention; FIG.

FIG. 11 is a flow chart showing the overall processing flow of a semi-persistent scheduling mechanism according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the invention, but the invention may be practiced in other embodiments than described herein. The scope of protection is not limited by the specific embodiments disclosed below.

2 shows a schematic flow diagram of a resource scheduling method for vehicle communication in accordance with one embodiment of the present invention.

As shown in FIG. 2, a resource scheduling method for vehicle communication according to an embodiment of the present invention includes:

Step 202: Acquire a configuration parameter that is allocated by the base station to perform semi-persistent scheduling on the secondary link.

Step 204: Determine, according to the configuration parameter, a time-frequency resource for periodically transmitting a vehicle communication message.

Step 206: Periodically transmit the vehicle communication message based on the time-frequency resource.

FIG. 3 illustrates a resource scheduling device for vehicle communication in accordance with one embodiment of the present invention. Schematic block diagram.

As shown in FIG. 3, a resource scheduling apparatus 300 for vehicle communication according to an embodiment of the present invention includes an obtaining unit 302, a determining unit 304, and a transmitting unit 306.

The obtaining unit 302 is configured to acquire a configuration parameter that is configured by the base station to perform semi-persistent scheduling on the secondary link, and the determining unit 304 is configured to determine, according to the configuration parameter, a time-frequency resource for periodically transmitting the vehicle communication message. The transmitting unit 306 is configured to periodically transmit the vehicle communication message based on the time-frequency resource.

In the above technical solution, preferably, the obtaining unit 302 includes:

a first receiving unit 3022, configured to receive, by the base station, a configuration parameter that is allocated according to a message feature of a vehicle communication service performed by the terminal; or

The first interaction unit 3024 is configured to send a semi-persistent scheduling configuration request to the base station, and receive a configuration parameter that is allocated by the base station according to a message feature of the vehicle communication service performed by the terminal included in the configuration request.

In any one of the foregoing technical solutions, the method further includes: a second receiving unit 308, configured to receive the configuration parameter that is re-allocated by the base station; or a second interaction unit 310, configured to send a semi-static to the base station Scheduling a reconfiguration request and receiving the base station according to the reconfiguration Requiring to re-allocate the configuration parameters to the terminal;

The determining unit 304 is further configured to: re-determine a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station;

The transmitting unit 306 is further configured to periodically transmit the vehicle communication message based on a time-frequency resource that is determined by the determining unit 304.

In any of the above technical solutions, preferably, the determining unit 304 is specifically configured to:

Specifically, the terminal may monitor the physical downlink control information sent by the base station by monitoring the PDCCH or the e-PDCCH.

In any of the above technical solutions, preferably, the transmission unit 306 is further configured to:

Figure 4 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention. As shown in FIG. 4, a terminal 400 according to an embodiment of the present invention includes a communication bus 402, an input device 403, an output device 404, a memory 405, and a processor 401, wherein:

The communication bus 402 is configured to implement connection communication between the input device 403, the output device 404, the memory 405, and the processor 401;

The input device 403 is configured to acquire a configuration parameter that is configured by the base station to perform semi-persistent scheduling on the secondary link.

The output device 404 is configured to transmit a vehicle communication message;

The memory 405 stores a set of program codes, and the terminal calls the program code stored in the memory 405 for performing the following operations:

The input device 403 acquires configuration parameters allocated by the base station for semi-persistent scheduling on the secondary link;

The processor 401 determines, according to the configuration parameter, a time-frequency resource for periodically transmitting a vehicle communication message;

The output device 404 periodically transmits the vehicle communication message based on the time-frequency resource.

Optionally, the input device 403 is configured to acquire, by the base station, a configuration parameter that performs semi-persistent scheduling on the secondary link, and specifically includes:

The input device 403 receives configuration parameters allocated by the base station according to message characteristics of a vehicle communication service performed by the terminal; or

The output device 404 sends a semi-persistent scheduling configuration request to the base station, and the input device 403 receives a configuration parameter allocated by the base station according to a message feature of a vehicle communication service performed by a terminal included in the configuration request.

Optionally, the input device 403 receives the configuration parameter re-allocated by the base station; or the output device 404 sends a semi-persistent scheduled reconfiguration request to the base station, where the input device 403 receives the base station according to the The configuration parameter that the reconfiguration request re-allocates to the terminal;

The processor 401 re-determines a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station, and the output device 404 is based on re- The determined time-frequency resource periodically transmits the vehicle communication message.

Optionally, the step of determining, by the processor 401, the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, specifically includes:

The processor 401 monitors the physical downlink control information sent by the base station, and demodulates the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;

The processor 401 determines a usage period of a time-frequency resource used for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.

Optionally, the output device 404 stops using the time-frequency resource to transmit the vehicle communication message when the duration of the vehicle communication message reaches a predetermined duration; or

When the input device 403 receives the indication information of the time-frequency resource that is sent by the base station, the output device 404 stops transmitting the vehicle communication message by using the time-frequency resource.

FIG. 5 shows a schematic flow chart of a resource scheduling method for vehicle communication in accordance with another embodiment of the present invention.

As shown in FIG. 5, a resource scheduling method for vehicle communication according to another embodiment of the present invention includes:

Step 502: Assign a configuration parameter to the terminal for semi-persistent scheduling on the secondary link.

Step 504: Send the configuration parameter to the terminal.

Step 506: Send physical downlink control information to the terminal, so that the terminal determines, according to the configuration parameter and the physical downlink control information, a time-frequency resource for periodically transmitting a vehicle communication message.

In the above technical solution, preferably, the terminal is allocated to perform semi-persistent scheduling on the secondary link. The steps of the configuration parameters include:

In this technical solution, by determining whether the terminal is permitted to use the semi-persistent scheduling mechanism on the secondary link, the terminal capable of semi-persistent scheduling can be accurately determined. Specifically, such as a terminal The message feature of the performed vehicle communication service indicates that the vehicle communication message is not a periodic message, and then determines that the terminal is not permitted to use the semi-static scheduling mechanism on the secondary link; and if the message characteristics of the vehicle communication service performed by the terminal indicate that the vehicle communication message is A periodic message and the size of the message is below a certain threshold determines that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link.

6 shows a schematic block diagram of a resource scheduling device for vehicle communication in accordance with another embodiment of the present invention.

As shown in FIG. 6, a resource scheduling apparatus 600 for vehicle communication according to another embodiment of the present invention includes an allocating unit 602 and a transmitting unit 604.

The allocating unit 602 is configured to allocate, to the terminal, configuration parameters for semi-persistent scheduling on the secondary link, and the sending unit 604 is configured to send the configuration parameter to the terminal, and send the physical downlink to the terminal. Controlling information to cause the terminal to determine a time-frequency resource for periodically transmitting a vehicle communication message based on the configuration parameter and the physical downlink control information.

In the technical solution, the base station allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal, so that the terminal determines the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, so that when the terminal performs the V2V service, The base station can use the semi-persistent scheduling mechanism to configure the time-frequency resource to the terminal, and achieve the purpose of “one-time allocation and multiple-use”, thereby reducing the overhead of the PDCCH, so that the base station uses more resources for scheduling other. The terminal improves the resource utilization efficiency and solves the resource utilization effect caused by the semi-static scheduling mechanism in the related technology. The problem is lower.

In the above technical solution, preferably, the allocating unit 602 is specifically configured to:

In any of the above technical solutions, preferably, the allocating unit 602 is further configured to:

The determining unit 606 is configured to determine, according to the message feature of the vehicle communication service performed by the terminal, whether the terminal is permitted to use the semi-static on the secondary link before the allocating unit 602 allocates the configuration parameter to the terminal Scheduling mechanism;

The allocating unit 602 is specifically configured to perform an operation of allocating the configuration parameter to the terminal when the determining unit 606 determines that the terminal is permitted to use the semi-static scheduling mechanism on the secondary link.

a resource release unit 608, configured to release the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration; or

The processing unit 610 is configured to send, to the terminal, indication information for releasing the time-frequency resource, and release the time-frequency resource, where the indication information is used to instruct the terminal to stop using the time-frequency resource to transmit the vehicle. Communication message.

Figure 7 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention. As shown in FIG. 7, a base station 700 according to an embodiment of the present invention includes a communication bus 702, an input device 703, an output device 704, a memory 705, and a processor 701, where:

The communication bus 702 is configured to implement connection communication between the input device 703, the output device 704, the memory 705, and the processor 701;

The output device 704 is configured to send configuration parameters and a physical downlink control message to the terminal;

The memory 705 stores a set of program codes, and the base station calls the program code stored in the memory 705 for performing the following operations:

The processor 701 allocates, to the terminal, configuration parameters for semi-persistent scheduling on the secondary link;

The output device 704 sends the configuration parameter to the terminal;

The output device 704 sends physical downlink control information to the terminal, so that the terminal determines, based on the configuration parameter and the physical downlink control information, that the vehicle communication is periodically transmitted. The time-frequency resource of the message.

Optionally, the step of the processor 701 assigning, to the terminal, the semi-persistent scheduling configuration parameter on the secondary link, specifically includes:

The processor 701 allocates the configuration parameter to the terminal according to the learned message feature of the vehicle communication service performed by the terminal; or

The input device 703 receives the configuration request of the semi-persistent scheduling sent by the terminal, and the processor 701 allocates the configuration parameter to the terminal according to the message feature of the vehicle communication service performed by the terminal included in the configuration request.

Optionally, the processor 701 re-allocates the configuration parameter to the terminal when the configuration parameter allocated to the terminal needs to be adjusted, and the output device 704 sends the re-allocated configuration parameter to The terminal; or

The input device 703 receives a semi-persistent scheduling reconfiguration request sent by the terminal, and the processor 701 re-allocates the configuration parameter allocated to the terminal according to the reconfiguration request, and the output device 704 re-allocates the configuration parameter. The configuration parameters are sent to the terminal.

Optionally, the processor 701 further performs the following operations before the step of allocating the configuration parameters to the terminal for semi-persistent scheduling on the secondary link:

The processor 701 determines, according to the message feature of the vehicle communication service performed by the terminal, whether to permit the terminal to use a semi-static scheduling mechanism on the secondary link;

If it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link, the processor 701 performs the step of assigning to the terminal configuration parameters for semi-persistent scheduling on the secondary link.

Optionally, the processor 701 releases the time-frequency resource when the duration of the vehicle communication message reaches a predetermined duration; or

The output device 704 sends the indication information for releasing the time-frequency resource to the terminal, the processor 701 releases the time-frequency resource, and the indication information is used to indicate that the terminal stops using the time-frequency resource transmission. The vehicle communication message.

In summary, since the resource allocation method of the Rel-13D2D scheduling mode is only a dynamic scheduling mechanism, the implementation standard of the semi-static scheduling mechanism has not been introduced and defined, and the message that the semi-static resource scheduling mechanism is introduced into some V2V services is considered. There is a large potential gain in transmission. Therefore, the present invention proposes to introduce a semi-static resource in a resource allocation method based on an eNB scheduling mode. The source scheduling mechanism is such that the semi-persistent scheduling resource is “allocated, used multiple times”, which can reduce the overhead of the corresponding PDCCH, so as to use more resources for scheduling additional UEs, thereby facilitating the network capacity. And the invention develops related implementation signaling and procedures on the basis of discussing the behavior of the UE end and the eNB end. The following details are explained:

For convenience of explanation, the semi-persistent scheduling mechanism is hereinafter referred to as the SPS (Semi-Persistent Scheduling) mechanism. And in order to distinguish from the existing semi-static scheduling mechanism of uplink (uplink) and downlink (Downlink) resource allocation, the following semi-static scheduling mechanism for D2D sublink (Sidelink) resource allocation is simply referred to as SL SPS. mechanism.

The technical solution of the present invention is mainly divided into three major stages:

First, the initialization phase:

During this phase, the UE acquires relevant configuration parameters of the SL SPS. The initialization of the SL SPS configuration of the UE may be triggered by the UE to report the request, or may be directly sent by the eNB.

1. If the UE's SL SPS configuration initialization is triggered by the UE's active reporting request, the UE needs to report its own SL SPS configuration request through RRC (Radio Resource Control) signaling. The RRC signaling includes the message characteristics of the V2V service performed by the UE, such as whether it is a periodic message, a V2V message content type, a transmission frequency f of the V2V message, a size s of the V2V message, a duration t of the V2V message, and the like.

2. If the SL SPS configuration parameter of the UE is directly sent by the eNB, the UE does not need to report the eNB to the eNB through the explicit signaling, and the eNB directly sends the relevant configuration parameters of the SL SPS of the UE. Of course, the eNB can perform this operation on the premise that the eNB already knows that the UE currently uses the dynamic scheduling mechanism and the message characteristics of the V2V service performed by the UE.

3. Whether the UE actively reports the request to trigger the configuration initialization of the SL SPS or the eNB directly delivers the configuration parameters of the SL SPS, the eNB needs to perform the admission control before sending the configuration parameters of the SL SPS.

The eNB performs the admission control, in particular, the eNB jointly determines whether the UE is suitable for using the SL SPS scheduling based on one or more message features of the V2V service performed by the UE, and whether the available time-frequency resources are used for the SL SPS scheduling. For example, if the V2V service performed by the UE sends an aperiodic message, the UE is not allowed to use the semi-persistent scheduling mechanism; if the UE performs a periodic message and the size s of the message is below a certain threshold, and the available time frequency is available Resources for SL When the SPS is scheduled, the UE is allowed to use a semi-persistent scheduling mechanism. If the result of the admission control is that the UE is allowed to use the semi-persistent scheduling mechanism, the eNB sends the SL SPS configuration parameter to the UE by using the RRC signaling, where the RRC signaling includes the SPS configuration parameter of the V2V service performed by the UE, for example, the SL SPS period. T, the UE performs the unique identification SPS SL-RNTI of the SL SPS.

4. In particular, the SL SPS can also be reconfigured. The reason for triggering SL SPS reconfiguration may come from the UE side or from the eNB side. For example, after the UE performs the V2V service for a period of time, certain message characteristics (sending frequency, message size, etc.) are changed, and the eNB needs to change the time-frequency resource location using the SL SPS, and the like.

The process of the initialization phase can be as shown in Figure 8:

For mode one, include:

Step 802: The UE/source vehicle sends an SL SPS configuration/reconfiguration request to the eNB through RRC signaling.

In step 804, the eNB performs SL SPS admission control.

In step 806, the eNB sends the configuration/reconfiguration parameters of the SL SPS to the UE/source vehicle through RRC signaling.

For mode two, include:

In step 808, the eNB performs SL SPS admission control.

In step 810, the eNB sends the configuration/reconfiguration parameters of the SL SPS to the UE/source vehicle through RRC signaling.

Second, the activation phase

In this phase, the UE starts periodic V2V message transmission according to the acquired SPS configuration parameters. specifically:

1. The UE listens to its own PDCCH/e-PDCCH, and demodulates the location of available time-frequency resources (ie, SPS SL grant) by the eNB for its assigned SPS SL-RNTI.

2. The UE sends a V2V message at the demodulated time-frequency resource location.

3. Thereafter, the UE starts to periodically use the time-frequency resource to transmit the V2V message based on the SL SPS period T.

The process of the activation phase can be as shown in Figure 9, including:

In step 902, the eNB allocates an SPS SL grant to the UE/source vehicle.

In step 904, the UE/source vehicle monitors the PDCCH/e-PDCCH, and demodulates the location of the available time-frequency resources based on the SPS SL-RNIT.

Step 906: The UE/source vehicle performs periodic V2V message transmission with the UE/target vehicle based on the location of the demodulated time-frequency resource.

Third, the failure phase

During this phase, the SL SPS configuration of the UE is released, and the UE stops the periodic V2V message transmission. The SL SPS configuration of the UE can be invalidated in the following two ways:

Method 1: The UE judges itself. Specifically, when the duration t of the V2V message arrives, the UE stops using the time-frequency resources demodulated by the SPS SL-RNTI. In this manner, because the eNB acquires the duration t of the V2V message of the UE during the initialization phase, the UE does not have to notify the eNB again, and the eNB releases the time-frequency resources for the SL SPS while the time is reached.

Manner 2: The eNB explicitly notifies the UE. Specifically, the eNB may issue an instruction of the release SL SPS configuration through RRC signaling, which may terminate the transmission of the V2V message in advance.

The process of the failure phase can be as shown in Figure 10:

For mode one, include:

Step 1002, when the duration t of the V2V message arrives, the UE/source vehicle terminates the V2V;

In step 1004, the eNB releases the time-frequency resources allocated to the UE/source vehicle.

For mode two, include:

Step 1006: Before the duration t of the V2V message arrives, the eNB sends a SL SPS configuration release instruction to the UE/source vehicle through RRC signaling.

At step 1008, the UE/source vehicle terminates the V2V.

The overall processing flow of the above three stages is shown in Figure 11, including:

Step 1102: The UE/source vehicle sends an SL SPS configuration/reconfiguration request to the eNB through RRC signaling. The step is that the UE/source vehicle reports the request to the eNB to trigger the eNB to perform the configuration. If the eNB actively sends the configuration parameters of the SL SPS to the UE, the step is not performed.

In step 1104, the eNB performs SL SPS admission control.

In step 1106, the eNB sends the configuration/reconfiguration parameters of the SL SPS to the UE/source vehicle through RRC signaling.

In step 1108, the eNB allocates an SPS SL grant to the UE/source vehicle.

In step 1110, the UE/source vehicle monitors the PDCCH/e-PDCCH, and demodulates the location of the available time-frequency resources based on the SPS SL-RNIT.

Step 1112: The UE/source vehicle performs periodic V2V message transmission with the UE/target vehicle based on the location of the demodulated time-frequency resource.

Step 1114: The eNB sends a SL SPS configuration release instruction to the UE/source vehicle through RRC signaling. This step is a step in which the eNB sends a SL SPS configuration release command to the UE/source vehicle, that is, before the duration t of the V2V message arrives, the eNB sends a SL SPS configuration release command to the UE/source vehicle, if the duration of the V2V message is t Upon arrival, the eNB does not need to transmit to the UE/source vehicle.

At step 1116, the UE/source vehicle terminates the V2V.

The above technical solution of the present invention introduces a semi-static resource scheduling mechanism into a V2V message transmission based on PC5/D2D, and is suitable for a periodic V2V service with a small data packet and a substantially constant size, which is beneficial to improving the capacity of the vehicle network.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. The present invention proposes a new resource scheduling scheme for vehicle communication, so that when the terminal performs V2V service, the base station can adopt a semi-persistent scheduling mechanism to configure the terminal. The time-frequency resource can further reduce the overhead of the PDCCH, so that the base station uses more resources for scheduling other terminals, thereby improving resource utilization efficiency.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A resource scheduling method for vehicle communication, comprising:

Acquiring configuration parameters allocated by the base station for semi-persistent scheduling on the secondary link;

Determining a time-frequency resource for periodically transmitting a vehicle communication message according to the configuration parameter;

The vehicle communication message is transmitted periodically based on the time-frequency resource.
The resource scheduling method for vehicle communication according to claim 1, wherein the step of acquiring a configuration parameter of the semi-static scheduling on the secondary link that is allocated by the base station, specifically includes:

Receiving, by the base station, configuration parameters allocated according to message characteristics of a vehicle communication service performed by the terminal; or

And transmitting, to the base station, a configuration request of a semi-persistent scheduling, and receiving, by the base station, a configuration parameter allocated by a message feature of the vehicle communication service performed by the terminal included in the configuration request.
The resource scheduling method for vehicle communication according to claim 2, wherein the message characteristics of the vehicle communication service comprise:

Whether the vehicle communication message is a periodic message, a type of vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
The resource scheduling method for vehicle communication according to claim 1, further comprising:

Receiving the configuration parameter re-allocated by the base station; or sending a semi-persistently scheduled reconfiguration request to the base station, and receiving the configuration parameter that the base station re-allocates to the terminal according to the reconfiguration request;

And determining, according to the configuration parameter re-allocated by the base station, time-frequency resources for periodically transmitting the vehicle communication message, and periodically transmitting the vehicle communication message based on the re-determined time-frequency resource.
The resource scheduling method for vehicle communication according to claim 1, wherein the step of determining a time-frequency resource for periodically transmitting a vehicle communication message according to the configuration parameter comprises:

Monitoring the physical downlink control information sent by the base station, and demodulating the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;

Determining a usage period of a time-frequency resource for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.
The resource scheduling method for vehicle communication according to any one of claims 1 to 5, further comprising:

Stopping using the time-frequency resource to transmit the vehicle communication message when the duration of the vehicle communication message reaches a predetermined length of time; or

And stopping receiving the vehicle communication message by using the time-frequency resource when receiving the indication information of the time-frequency resource sent by the base station.
A resource scheduling method for vehicle communication, comprising:

Allocating configuration parameters for semi-persistent scheduling on the secondary link to the terminal;

Sending the configuration parameter to the terminal;

And transmitting physical downlink control information to the terminal, so that the terminal determines, according to the configuration parameter and the physical downlink control information, a time-frequency resource for periodically transmitting a vehicle communication message.
The resource scheduling method for vehicle communication according to claim 7, wherein the step of assigning, to the terminal, configuration parameters for semi-persistent scheduling on the secondary link, specifically includes:

Assigning the configuration parameter to the terminal according to a message feature of the vehicle communication service performed by the terminal; or

Receiving a semi-persistent scheduling configuration request sent by the terminal, and allocating the configuration parameter to the terminal according to a message feature of the vehicle communication service performed by the terminal included in the configuration request.
The resource scheduling method for vehicle communication according to claim 7, further comprising:

Relocating the configuration parameter to the terminal when the configuration parameter allocated to the terminal needs to be adjusted, and transmitting the re-allocated configuration parameter to the terminal; or

Receiving a semi-persistent scheduling reconfiguration request sent by the terminal, re-allocating the configuration parameter allocated to the terminal according to the reconfiguration request, and sending the re-allocated configuration parameter to the terminal.
The resource scheduling method for vehicle communication according to claim 7, wherein before the step of assigning the configuration parameter to the terminal for semi-persistent scheduling on the secondary link, the method further includes:

Determining whether to permit the terminal to use a semi-static scheduling mechanism on the secondary link according to the message characteristics of the vehicle communication service performed by the terminal;

If it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link, the step of assigning the configuration parameters to the terminal for semi-persistent scheduling on the secondary link is performed.
The resource scheduling method for vehicle communication according to any one of claims 7 to 10, further comprising:

Release the time-frequency resource when the duration of the vehicle communication message reaches a predetermined length of time; or

Sending, to the terminal, indication information for releasing the time-frequency resource, and releasing the time-frequency resource, where the indication information is used to indicate that the terminal stops using the time-frequency resource to transmit the vehicle communication message.
A resource scheduling device for vehicle communication, comprising:

An obtaining unit, configured to acquire, by the base station, configuration parameters that are semi-statically scheduled on the secondary link;

a determining unit, configured to determine, according to the configuration parameter, a time-frequency resource for periodically transmitting a vehicle communication message;

And a transmitting unit, configured to periodically transmit the vehicle communication message based on the time-frequency resource.
The resource scheduling apparatus for vehicle communication according to claim 12, wherein the obtaining unit comprises:

a first receiving unit, configured to receive a configuration parameter that is allocated by the base station according to a message feature of a vehicle communication service performed by the terminal; or

And a first interaction unit, configured to send a semi-persistent scheduling configuration request to the base station, and receive a configuration parameter that is allocated by the base station according to a message feature of the vehicle communication service performed by the terminal included in the configuration request.
The resource scheduling apparatus for vehicle communication according to claim 13, wherein the message characteristics of the vehicle communication service comprise:

Whether the vehicle communication message is a periodic message, a type of vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
A resource scheduling apparatus for vehicle communication according to claim 12, characterized in that The method further includes: a second receiving unit, configured to receive the configuration parameter that is re-allocated by the base station; or a second interaction unit, configured to send a semi-persistently scheduled reconfiguration request to the base station, and receive the base station Reconfiguring the configuration parameter allocated to the terminal according to the reconfiguration request;

The determining unit is further configured to: re-determine a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station;

The transmitting unit is further configured to periodically transmit the vehicle communication message based on a time-frequency resource that is determined by the determining unit.
The resource scheduling apparatus for vehicle communication according to claim 12, wherein the determining unit is specifically configured to:

Monitoring the physical downlink control information sent by the base station, and demodulating the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;

Determining a usage period of a time-frequency resource for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.
The resource scheduling apparatus for vehicle communication according to any one of claims 12 to 16, wherein the transmission unit is further configured to:

Stopping using the time-frequency resource to transmit the vehicle communication message when the duration of the vehicle communication message reaches a predetermined length of time; or

And stopping receiving the vehicle communication message by using the time-frequency resource when receiving the indication information of the time-frequency resource sent by the base station.
A resource scheduling device for vehicle communication, comprising:

An allocation unit, configured to allocate, to the terminal, configuration parameters for semi-persistent scheduling on the secondary link;

a sending unit, configured to send the configuration parameter to the terminal, and configured to send physical downlink control information to the terminal, so that the terminal determines, for periodicity, based on the configuration parameter and the physical downlink control information Time-frequency resources for transmitting vehicle communication messages.
The resource scheduling apparatus for vehicle communication according to claim 18, wherein the allocating unit is specifically configured to:

Assigning the configuration parameter to the terminal according to a message feature of the vehicle communication service performed by the terminal; or

Receiving a semi-persistent scheduling configuration request sent by the terminal, according to the configuration request packet The message feature of the vehicle communication service performed by the terminal includes assigning the configuration parameter to the terminal.
The resource scheduling apparatus for vehicle communication according to claim 18, wherein the allocating unit is further configured to:

Relocating the configuration parameter to the terminal when the configuration parameter allocated to the terminal needs to be adjusted, and transmitting the re-allocated configuration parameter to the terminal; or

Receiving a semi-persistent scheduling reconfiguration request sent by the terminal, re-allocating the configuration parameter allocated to the terminal according to the reconfiguration request, and sending the re-allocated configuration parameter to the terminal.
The resource scheduling apparatus for vehicle communication according to claim 18, further comprising:

a determining unit, configured to determine, according to a message feature of the vehicle communication service performed by the terminal, whether to permit the terminal to use a semi-static scheduling mechanism on the secondary link before the allocation unit allocates the configuration parameter to the terminal ;

The allocating unit is specifically configured to perform an operation of allocating the configuration parameter to the terminal when the determining unit determines that the terminal is permitted to use the semi-static scheduling mechanism on the secondary link.
The resource scheduling apparatus for vehicle communication according to any one of claims 18 to 21, further comprising:

a resource release unit, configured to release the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration; or

a processing unit, configured to send, to the terminal, indication information for releasing the time-frequency resource, and release the time-frequency resource, where the indication information is used to instruct the terminal to stop using the time-frequency resource to transmit the vehicle communication Message.
A terminal, comprising: a communication bus, an input device, an output device, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the input device, the output device, the memory, and the processor;

The input device is configured to acquire, by the base station, configuration parameters that are semi-statically scheduled on the secondary link;

The output device is configured to transmit a vehicle communication message;

The program stores a set of program codes, and the terminal calls the program code stored in the memory to perform the following operations:

The input device acquires configuration parameters allocated by the base station for semi-persistent scheduling on the secondary link;

Determining, by the processor, a time-frequency resource for periodically transmitting a vehicle communication message according to the configuration parameter;

The output device periodically transmits the vehicle communication message based on the time-frequency resource.
The terminal according to claim 23, wherein the step of acquiring, by the input device, the configuration parameter that is configured by the base station to perform semi-persistent scheduling on the secondary link, specifically includes:

The input device receives configuration parameters allocated by the base station according to message characteristics of a vehicle communication service performed by the terminal; or

The output device sends a semi-persistent scheduling configuration request to the base station, and the input device receives a configuration parameter that is allocated by the base station according to a message feature of a vehicle communication service performed by a terminal included in the configuration request.
The terminal according to claim 24, wherein the message characteristics of the vehicle communication service comprise:

Whether the vehicle communication message is a periodic message, a type of vehicle communication message, a transmission frequency of the vehicle communication message, a data size of the vehicle communication message, and a duration of the vehicle communication message.
The terminal according to claim 23, wherein said input means receives said configuration parameter re-allocated by said base station; or said output means transmits a semi-statically scheduled reconfiguration request to said base station, said input Receiving, by the device, the configuration parameter that is re-allocated to the terminal by the base station according to the reconfiguration request;

The processor re-determining a time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter re-allocated by the base station, and the output device periodically transmits the time-frequency resource based on the re-determined time-frequency resource Vehicle communication message.
The terminal according to claim 23, wherein the determining, by the processor, the time-frequency resource for periodically transmitting the vehicle communication message according to the configuration parameter, specifically includes:

The processor monitors the physical downlink control information sent by the base station, and demodulates the time-frequency resource according to the RNTI for performing sub-link communication by the terminal included in the configuration parameter;

The processor determines a usage period of a time-frequency resource for transmitting the vehicle communication message according to a semi-persistent scheduling period allocated to the terminal included in the configuration parameter.
The terminal according to any one of claims 23 to 27, wherein the output means stops transmitting the vehicle communication message using the time-frequency resource when a duration of the vehicle communication message reaches a predetermined length of time ;or

When the input device receives the indication information of the time-frequency resource that is sent by the base station, the output device stops transmitting the vehicle communication message by using the time-frequency resource.
A base station, comprising: a communication bus, an input device, an output device, a memory, and a processor, wherein:

The communication bus is configured to implement connection communication between the input device, the output device, the memory, and the processor;

The output device is configured to send configuration parameters and a physical downlink control message to the terminal;

The program stores a set of program codes, and the base station calls program code stored in the memory to perform the following operations:

The processor allocates configuration parameters for semi-persistent scheduling on the secondary link to the terminal;

The output device sends the configuration parameter to the terminal;

The output device sends physical downlink control information to the terminal, so that the terminal determines a time-frequency resource for periodically transmitting a vehicle communication message based on the configuration parameter and the physical downlink control information.
The base station according to claim 29, wherein the step of the processor assigning, to the terminal, configuration parameters for semi-persistent scheduling on the secondary link, specifically includes:

The processor assigns the configuration parameter to the terminal according to a known message feature of the vehicle communication service performed by the terminal; or

The input device receives a semi-persistent scheduling configuration request sent by the terminal, and the processor allocates the configuration parameter to the terminal according to a message feature of a vehicle communication service performed by the terminal included in the configuration request.
The base station according to claim 29, wherein said processor reassigns said configuration parameter to said terminal when said configuration parameter assigned to said terminal needs to be adjusted, said output device reassigning The configuration parameters are sent to the terminal; or

Receiving, by the input device, a semi-persistent scheduling reconfiguration request sent by the terminal, the processor re-allocating the configuration parameter allocated to the terminal according to the reconfiguration request, and the output device reassigns the Configuration parameters are sent to the terminal.
The base station according to claim 29, wherein said processor further performs the following operations before said step of assigning to said terminal a configuration parameter for semi-persistent scheduling on the secondary link:

Determining, according to a message feature of the vehicle communication service performed by the terminal, whether the terminal is permitted to use a semi-static scheduling mechanism on the secondary link;

If it is determined that the terminal is permitted to use a semi-persistent scheduling mechanism on the secondary link, the processor performs the step of assigning to the terminal configuration parameters for semi-persistent scheduling on the secondary link.
The base station according to any one of claims 29 to 32, wherein the processor releases the time-frequency resource when a duration of the vehicle communication message reaches a predetermined duration; or

The output device sends the indication information for releasing the time-frequency resource to the terminal, the processor releases the time-frequency resource, and the indication information is used to indicate that the terminal stops using the time-frequency resource to transmit the Vehicle communication message.