WO2017121287A1

WO2017121287A1 - Method and apparatus for resource scheduling and collision indication

Info

Publication number: WO2017121287A1
Application number: PCT/CN2017/070370
Authority: WO
Inventors: 周海军; 冯媛; 林琳; 房家奕; 李媛媛
Original assignee: 电信科学技术研究院
Priority date: 2016-01-15
Filing date: 2017-01-06
Publication date: 2017-07-20
Also published as: TWI659665B; CN106982469B; TW201728211A; CN106982469A

Abstract

In the method for resource scheduling provided by the embodiments, an SA resource pool and a data resource pool are continuous in the time domain and divided in the frequency domain, and therefore, when an SA needs to be transmitted, an available SA resource is directly selected from the SA resource pool, and an available corresponding data resource after the SA resource is selected and data is transmitted, reducing data transmission delay and better satisfying high delay requirements of certain services.

Description

Method and device for resource scheduling and collision indication

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201610029238.6, filed on Jan.

Technical field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a method and device for resource scheduling and collision indication.

Background technique

At present, there are two main communication methods in the field of wireless communication:

Communication methods and direct communication methods via the network.

1. Communication method via network

The traditional way of communicating via the network is as shown in FIG. 1A, in which the Uu interface is used between the base station and the terminal (UE):

For the communication mode via the network, if the transmitting terminal (UE) wants to transmit data, the data is first sent to the base station through the Uu interface between the terminal and its serving base station, and then the base station sends the data of the receiving end to the outside via the core network device. The server determines whether the data needs to be sent to other terminals by the external server. If necessary, the data is forwarded to the serving base station of the receiving terminal, and the serving base station of the receiving terminal sends the data to the receiving terminal through the Uu interface.

2, direct communication

The way of direct communication is shown in Figure 1B:

Direct communication is implemented between the terminals using D2D (Device to Device) technology.

V2X (Vechile-to-Everything, vehicle and everything) communication is a hot topic in the field of communication. V2X communication mainly includes three aspects:

V2V (Vechile-to-Vechile, car to car): Communication between OBU (On Broad Unit) on the car.

V2I (Vechile-to-Infrastructure, lane network): car and RSU (Road Side Unit, Communication between roadside devices).

V2P (Vechile-to-Pedestrian, car to pedestrian): communication between the car and the pedestrian.

In D2D, the SA is in the same scheduling period as the indicated data, and the SA resource pool is in front of the data resource pool. The SA is used to indicate demodulation-related information such as time-frequency resources and modulation coding levels of data transmitted by the D2D terminal.

The relationship between SA and Data resource pools is shown in Figure 1C.

The current relationship between the SA and the Data resource pool, when the scheduling period is large, the data transmission delay is also relatively large.

For example, the scheduling period is 40 ms, and the SA resource pool is (0-7) + K*40; where K is an integer.

When high-level data arrives in subframe 8, the corresponding SA can only be sent in the subframe (0~7)+40, and the data can only be sent in (8~39)+40 subframes. Businesses with high latency requirements cannot support it.

It is currently impossible to indicate the collision that occurred during D2D transmission.

Summary of the invention

The present disclosure provides a method and a device for resource scheduling, which are used to solve the service problem in the prior art that if the scheduling period is large, the data transmission delay is long, and the delay requirement is not met.

The present disclosure provides a method and apparatus for collision indication for performing a collision indication in a D2D transmission.

In a first aspect, a method for resource scheduling provided by an embodiment of the present disclosure includes:

The V2X transmitting terminal determines the available resources of the SA from the SA resource pool, and determines the data available resources from the data resource pool, wherein the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data corresponding to the SA The available resources are located after the SA available resources;

The V2X transmitting terminal sends the SA through the SA available resources, and sends the data through the data available resources.

In one of the possible embodiments, the V2X sending terminal determines the SA available resources from the SA resource pool, including:

The V2X transmitting terminal determines, from the SA resource pool, a subframe for transmitting the SA for the first time, and a subframe for retransmitting the SA;

The V2X sending terminal sends the SA through the available resources of the SA, including:

The V2X transmitting terminal transmits the SA through the determined subframe for the first transmission, and transmits the SA through the subframe for retransmission.

Optionally, the V2X sending terminal determines, from the SA resource pool, a subframe used for the first transmission, and a subframe used for retransmission, including:

The V2X transmitting terminal determines, from the SA resource pool, an even subframe as a subframe for the first transmission, and determines that the odd subframe is a subframe for retransmission.

Optionally, the V2X transmitting terminal sends the SA by using the determined subframe for determining the first transmission, and sending the SA by using the subframe for retransmission, including:

The V2X transmitting terminal sends the SA through the m(i)th PRB of the even subframe L(i), and sends the SA through the m(i+1)th PRB of the odd subframe L(i+1);

If the maximum time interval between the first transmission and the retransmission is L-1 subframes, and the number of available PRBs in each subframe is M, then:

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

Where x is the number of times the SA is transmitted, M and L are even numbers, m(i) ranges from 0 to M-1, and i ranges from 0 to x-1.

Optionally, the V2X sending terminal determines the SA available resources from the SA resource pool, including:

The V2X transmitting terminal randomly selects at least two subframes from the SA resource pool;

The V2X transmitting terminal separately transmits the SA by each selected subframe.

Optionally, the SA includes some or all of the following information:

Delay indication information indicating a time interval between the first transmission or retransmission of the SA and the first transmission of the corresponding data;

Resource indication information indicating a resource indicated by the SA;

Transmission mode information indicating a subframe resource occupied by the data transmission in the time window;

Data modulation and coding information;

Length indication information indicating the effective interval of the next data;

Means for indicating the timing advance of the transmission clock of the terminal relative to the reception clock;

Used to indicate collision information detected when the V2X transmitting terminal is received as a V2X receiving terminal;

The terminal identifier of the V2X transmitting terminal.

Optionally, the collision information is a number of terminals that collide on the resource indicated by the SA or a terminal identifier of the terminal that collides on the resource indicated by the SA.

Optionally, if the subframe carrying the SA is the same subframe as the subframe carrying the data;

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

Optionally, if the subframe carrying the SA is the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information in the same subframe as the SA;

If the subframe carrying the SA is not the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information of the data corresponding to the SA.

Optionally, before the V2X sending terminal sends the SA through the available resources of the SA, and sends the data through the data available resources, the method further includes:

If the V2X transmitting terminal receives the other SAs as the V2X receiving terminal, and the received power of the other SAs is greater than the set power threshold, or the distance between the V2X transmitting terminal and the V2X terminal that sends the other SAs is less than The distance threshold is determined, and the received other SA is determined to be a conflict determination SA;

After the V2X transmitting terminal does not successfully receive the data corresponding to the conflict determination SA, the V2X transmitting terminal generates collision information for the conflict determination SA.

Optionally, the collision information is the number of terminals that collide on the resource indicated by the SA;

The V2X transmitting terminal sends data by using data available resources, and further includes:

The V2X transmitting terminal sends the terminal identifier of the terminal that collided through the data available resource.

In a second aspect, a method for resource scheduling provided by an embodiment of the present disclosure includes:

The V2X receiving terminal receives the SA through the SA available resources in the SA resource pool;

The V2X determines, by the SA, a time-frequency resource used by the corresponding data, and receives data on the time-frequency resource;

The time-frequency resource used by the corresponding data is located in the data resource pool, and the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data available resources corresponding to the SA are located after the SA available resources. .

In one of the possible embodiments, the V2X receiving terminal receives the SA through the SA available resources in the SA resource pool, including:

The V2X transmitting terminal performs soft combining on the same SA that is received multiple times.

In one possible embodiment, the SA contains some or all of the following information:

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

In a possible implementation, if the subframe carrying the SA is the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information in the same subframe as the SA;

In a possible implementation, after the V2X receiving terminal receives the SA through the SA available resources in the SA resource pool, the method further includes:

If the V2X receiving terminal does not receive the SA corresponding to the data in the same subframe of the SA, according to the received data modulation and coding information in the SA, and the PRB allocation granularity, the bearer of the SA is carried. Sub-frames are blindly tested;

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

In a third aspect, a resource collision indication method provided by an embodiment of the present disclosure, the party The law includes:

The V2X terminal generates collision information after determining that a collision occurs on the resource corresponding to the received SA;

When the V2X terminal needs to send the SA, the collision information is placed in the SA and sent.

In one of the possible embodiments, the collision information is the number of terminals that collide on the resource indicated by the SA or the terminal identifier of the terminal that collides on the resource indicated by the SA.

In one of the possible embodiments, the V2X terminal generates collision information after determining a collision on the resource corresponding to the SA, including:

The V2X determines that the received SA is received, and the received power of the received SA is greater than a set power threshold or the distance between the V2X terminal and the V2X terminal that sends the other SA is less than a distance threshold, and the received SA is the conflict judgment SA;

After the V2X terminal does not successfully receive the data corresponding to the conflict determination SA, the V2X terminal determines that a collision occurs on the resource corresponding to the conflict determination SA, and generates collision information for the conflict determination SA.

In one of the possible embodiments, the collision information is the number of terminals on the resource indicated by the SA;

When the V2X terminal needs to send the SA, the collision information is placed in the SA, and after being sent, the method further includes:

The V2X terminal sends the terminal identifier of the terminal that collided by using the data available resource for transmitting the data corresponding to the SA.

In a fourth aspect, a resource scheduling V2X transmitting terminal provided by the embodiment of the present disclosure includes:

a resource determining module, configured to determine an available resource of the SA from the SA resource pool, and determine a data available resource from the data resource pool, where the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, SA Corresponding data available resources are located after the SA available resources;

The transmission module is configured to send the SA through the SA available resources, and send the data through the data available resources.

In one of the possible embodiments, the resource determining module is specifically configured to:

Determining, from the SA resource pool, a subframe for transmitting the SA for the first time, and a subframe for retransmitting the SA;

The transmission module is specifically configured to:

The SA is transmitted through the determined subframe for the first transmission, and the SA is transmitted through the subframe for retransmission.

The even subframe is determined from the SA resource pool as a subframe for the first transmission, and the odd subframe is determined to be a subframe for retransmission.

In one of the possible embodiments, the transmission module is specifically configured to:

Transmitting SA through the mth (i)th PRB of the even subframe L(i), and transmitting the SA through the mth (i+1)th PRB of the odd subframe L(i+1);

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

Randomly selecting at least two subframes from the SA resource pool;

The transmission module is specifically configured to:

The SA is transmitted separately for each subframe selected.

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

In a feasible embodiment, if the subframe carrying the SA is the same subframe as the subframe carrying the data;

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

In one possible embodiment, the transmission module is further configured to:

Sending the SA through the available resources of the SA, and receiving the other SAs before sending the data through the data available resources, and receiving the received power of the other SAs is greater than a set power threshold or the V2X transmitting terminal and the V2X transmitting the other SAs If the distance between the terminals is less than the distance threshold, the other SAs that are received are determined to be the conflict determination SA. After the data corresponding to the conflict determination SA is not successfully received, the conflict determination SA is generated. Collision information.

The transmission module is further configured to:

The terminal identifier of the terminal that collided is transmitted through the data available resource.

In a fifth aspect, a resource scheduling V2X receiving terminal is provided by the embodiment of the present disclosure, where the V2X receiving terminal includes:

The SA receiving module is configured to receive the SA through the SA available resources in the SA resource pool;

a data receiving module, configured to determine, by using an SA, a time-frequency resource used by the corresponding data, and receive data on the time-frequency resource;

In one of the possible embodiments, the SA receiving module is specifically configured to:

The same SA received multiple times is soft merged.

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

In one of the possible embodiments, the data receiving module is further configured to:

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

In a sixth aspect, a resource collision indication V2X terminal provided by the embodiment of the present disclosure includes:

a generating module, configured to generate collision information after a collision occurs on the resource corresponding to the received SA;

And a sending module, configured to: when the SA needs to be sent, place the collision information in the SA and send the information.

In one of the possible embodiments, the generating module is specifically configured to:

After receiving the SA, and the received power of the received SA is greater than the set power threshold or the distance between the V2X terminal and the V2X terminal transmitting the other SA is less than the distance threshold, determining that the received SA is a collision After determining that the data corresponding to the conflict determination SA is not successfully received, the collision is determined on the resource corresponding to the conflict determination SA, and collision information for the conflict determination SA is generated.

The sending module is further configured to:

The terminal identifier of the terminal that collided is transmitted by the data available resource for transmitting the data corresponding to the SA.

In a seventh aspect, a resource scheduling V2X transmitting terminal provided by the embodiment of the present disclosure includes:

Processor;

a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations;

a transceiver for communicating with various other devices on a transmission medium,

When the processor calls and executes the program and data stored in the memory, the V2X transmitting terminal performs the following processing:

The SA available resources are determined from the SA resource pool, and the data available resources are determined from the data resource pool. The SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data available resources corresponding to the SA are located. After the SA is available for resources;

The SA is sent through the SA available resources, and the data is sent through the data available resources.

In an eighth aspect, a resource scheduling V2X receiving terminal provided by an embodiment of the present disclosure includes:

Processor;

a memory coupled to the processor via a bus interface and for storing the processor The programs and data used in performing the operation;

When the processor calls and executes the program and data stored in the memory, the V2X receiving terminal performs the following processing:

Receiving the SA through the SA available resources in the SA resource pool;

Determining, by the SA, a time-frequency resource used by the corresponding data, and receiving data on the time-frequency resource;

In a ninth aspect, a resource collision indication V2X terminal provided by the embodiment of the present disclosure includes:

Processor;

When the processor calls and executes the program and data stored in the memory, the V2X terminal performs the following processing:

After the collision occurs on the resource corresponding to the received SA, the collision information is generated;

When the SA needs to be sent, the collision information is placed in the SA and transmitted. In the resource scheduling method provided by the embodiment of the present disclosure, since the SA resource pool and the data resource pool are consecutive in the time domain and are divided in the frequency domain, when an SA needs to be sent, the SA is directly selected from the SA resource pool. The available resources are used to select the data available resources to send data after the available resources of the SA, thereby reducing the delay of data transmission, and better satisfying services with high delay requirements.

In the resource collision indication method provided by the embodiment of the present disclosure, after the V2X terminal collides with the resource corresponding to the received SA, the collision information is generated; when the SA needs to be sent, the collision information is placed in the SA, and Send, so as to achieve collision indication in D2D transmission.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will describe the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG. Other drawings can also be obtained from these figures.

1A is a schematic diagram of communication via a network in the background art;

1B is a schematic diagram of direct communication of a terminal in the background art;

1C is a schematic diagram of a relationship between an SA and a data resource pool in the background art;

2A is a schematic diagram of an SA resource pool and a data resource pool according to an embodiment of the present disclosure;

2B is a schematic structural diagram of a system for resource scheduling according to an embodiment of the present disclosure;

3 is a schematic structural diagram of a first V2X transmitting terminal according to an embodiment of the present disclosure;

4 is a schematic structural diagram of a first V2X receiving terminal according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a second V2X transmitting terminal according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a second V2X receiving terminal according to an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart of a first method for resource scheduling according to an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart of a method for second resource scheduling according to an embodiment of the present disclosure;

FIG. 9 is a schematic flowchart of a resource collision indication method according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a first resource collision indication terminal according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of a second resource collision indication terminal according to an embodiment of the present disclosure.

detailed description

The present disclosure will be further described in detail with reference to the accompanying drawings, in which FIG. An embodiment. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

In the following description, a V2X terminal is taken as an example. In the implementation, the V2X terminal includes but is not limited to one of the following terminals:

V2V terminal, V2I terminal and V2P terminal.

In the resource scheduling method provided by the embodiment of the present disclosure, the SA (Scheduling Assignment) resource pool and the data resource pool are consecutive in the time domain, and are in the frequency domain. The upper part is divided. Therefore, when an SA needs to be sent, the SA available resource is directly selected from the SA resource pool, and the corresponding data available resource is used to send data after the available resource of the SA, thereby reducing the delay of data transmission. It can better meet the business with high latency requirements.

The data corresponding to the SA of the present disclosure is the data sent on the time-frequency resource indicated by the SA.

The arrangement of the SA resource pool and the data resource pool of the present disclosure embodiment can be seen in FIG. 2A.

In Figure 2A, the resource 1 in the SA resource pool is the resource carrying the SA1, and the data carrying resource corresponding to the resource of the SA1 is the resource 1 in the data resource pool;

The resource 2 in the SA resource pool is the resource carrying the SA2, and the data carrying resource corresponding to the resource of the SA2 is the resource 2 in the data resource pool.

As can be seen from FIG. 2A, the SA resource pool and the data resource pool are consecutive in the time domain and are divided in the frequency domain; that is, the embodiment of the present disclosure can simultaneously put the SA and the data on different frequencies at the same time. Sending, there is no need to set the scheduling period, so that the SA can be sent at any time when there is a SA to be sent, and the corresponding data transmission time is selected at any time after the SA, so that there is no data to be sent at the end of the SA period, because When the SA is sent, the SA must be sent in the next SA cycle, which increases the delay of the data and shortens the data transmission delay.

As shown in FIG. 2B, the system for resource scheduling in the embodiment of the present disclosure includes:

The V2X sending terminal 10 is configured to determine an available resource of the SA from the SA resource pool, and determine a data available resource from the data resource pool, wherein the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, The data available resources corresponding to the SA are located after the SA available resources; the SA is sent through the SA available resources, and the data is sent through the data available resources.

The V2X receiving terminal 20 is configured to receive the SA through the SA available resources in the SA resource pool, determine the time-frequency resource used by the corresponding data by using the SA, and receive the data on the time-frequency resource.

In the implementation, when the V2X transmitting terminal has a data packet to be sent in the subframe i, the SA available resource is determined from the SA resource pool, and the data available resource is determined from the data resource pool.

Assume that the agreed data is transmitted in Ld subframes, and the data transmission delay is D.

The V2X transmitting terminal may randomly select an integer within D-Ld-2 (here 2 may also be other numbers), and the integer is D1.

The V2X transmitting terminal selects a time-frequency unit for transmitting data in the subframes i+2+D1~i+1+D1+Ld (the time-frequency unit is located in the data resource pool).

Assuming that the first transmission of the data is performed at i+2+D1+D2, the time-frequency unit for transmitting the SA needs to be randomly selected from the subframes i~i+1+D1+D2 (the time-frequency unit is located in the SA resource pool) .

Where D2 is the time interval between the first transmission of data and the starting point of the data time window.

Optionally, the subframe used for transmitting the SA and the subframe used for transmitting data may be the same subframe in a certain probability, for example, the probability is set to 50%, so that interference between the SA and the data may be reduced.

It should be noted that the subframe used for transmitting the SA is the same subframe as the subframe used for transmitting data, and the data transmitted in the same subframe as the SA is data corresponding to the SA different from the SA.

For example, the subframe A for transmitting SA1 is also a subframe for transmitting data 2, in which case the subframe for transmitting the SA is the same subframe as the subframe for transmitting data. However, the data corresponding to SA1 is not data 2. The subframe for transmitting data corresponding to SA1 is located after subframe A, and the subframe for transmitting SA corresponding to data 2 is located before subframe A.

Optionally, the PRB (Physical Resource Block) allocation granularity of the embodiment of the present disclosure is Y PRBs, and Y is a positive integer. If the subframe carrying the SA is the same subframe as the subframe carrying the data, Y may be an integer greater than 1. Increasing the PRB allocation granularity can reduce the complexity of data blind detection and reduce the overhead required for resource indication.

In the implementation process, in order to ensure the success rate of SA transmission, it is generally preferred to send the same SA multiple times. The number of specific transmissions can be set as needed.

Based on this, the V2X transmitting terminal needs to determine the available resources of the SA from the SA resource pool for each SA that is sent, and there are various specific determination manners, which are listed below.

Manner 1: The V2X transmitting terminal determines, from the SA resource pool, a subframe for the first transmission, and a subframe for retransmission.

In this way, the subframes in the SA resource pool are divided into two categories, one for the first transmission of the SA. The subframe, the other type is the subframe used to retransmit the SA.

Correspondingly, the V2X transmitting terminal transmits the SA through the determined subframe for the first transmission, and transmits the SA through the subframe for retransmission.

Here, the subframe for transmitting the SA for the first time is a plurality of subframes, and the subframe for retransmission is a plurality of subframes. The V2X transmitting terminal selects one subframe to transmit an SA from a plurality of subframes for transmitting the SA for the first time; and selects one subframe to transmit the SA from among a plurality of subframes for retransmitting the SA.

Optionally, the subframe used for the first transmission of the SA is an odd subframe, that is, the subframe with the subframe number is an odd number; the subframe used for the retransmission is an even subframe, that is, the subframe with the subframe number is an even number.

Assuming that the V2X transmitting terminal transmits the SA through the m(i)th PRB of the even subframe L(i), transmitting the SA through the m(i+1)th PRB of the odd subframe L(i+1);

If the maximum time interval between the first transmission and the retransmission is L-1 subframes, and the number of available PRBs per subframe is M, then:

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

In the above formula, when x=2, the corresponding SA is transmitted twice, the first transmission is in the even subframe, and the retransmission is performed in the subframe. When x>2, assuming n is the subframe number, the mth transmission is transmitted in a subframe of mod(n, x)=m. Where mod(n,x) is the modulo for x.

It should be noted that m(i) and m(i+1) here are logical subcarrier numbers. In actual physical allocation, as shown in FIG. 2A, the SA resource pool is divided at both ends of the entire V2X available carrier. It is assumed that the V2X carrier bandwidth is Nc subcarriers, and subcarriers 0 to M/2-1 and N-M/2 to Nc-1 are used for transmitting SA. Then, the logical number of these subcarriers is 0 to M-1.

Optionally, if the V2X transmitting terminal receives multiple identical SAs, the same received The SAs are soft merged so that the merge gain can be obtained.

Here's an example:

1. Primary selection or re-election of resources

Before selecting a resource, the V2X sending terminal identifies the usage of the resource according to the received SA;

Specifically, if the V2X transmitting terminal receives the SA indicating that the time-frequency unit y of the subframe x is used by another V2X, and the occupation period is z. Then the time-frequency unit y of the subframe x+s*z is identified as occupied. Until the consecutive X (X is a preset value) times, no SA indicates that the corresponding time-frequency unit is occupied, then the time-frequency unit is placed idle.

Assume that the total number of transmissions of the data is 2, and the initial transmission and retransmission are limited to a time window of one Ld ms.

The V2X transmitting terminal randomly selects an integer within D-Ld-2, the integer is D1, and selects a time-frequency unit for transmitting data in the subframes i+2+D1~i+1+D1+Ld.

For example, the idle subframe is most preferred; the subframe with the highest subframe power is preferred.

Manner 2: In addition to the foregoing mode 1, the V2X transmitting terminal may randomly select at least two subframes from the SA resource pool; and send the SAs respectively by using each of the selected subframes.

Optionally, the V2X transmitting terminal may randomly select, from the Ld subframes, a plurality of time-frequency units that satisfy a repetition degree lower than a threshold as the selected transmission data resource. If the required time-frequency unit is not met, re-select the data transmission window. The data transmission window is reselected at most S times. The repetition degree here is the proportion of the selected time-frequency unit that is simultaneously occupied by other V2X terminals. For example, 10 time-frequency units are selected, and 3 of them are occupied by other V2X terminals, and the selected time-frequency unit has a repetition degree of 0.3.

Assuming that the first transmission of the selected data is performed at i+2+D1+D2, the time-frequency resources required by the SA need to be randomly selected from the subframes i~i+1+D1+D2. It is also possible to select a subframe with the same data as the probability SA to transmit, for example, a probability of 50%.

In implementations, the SA of the embodiments of the present disclosure includes, but is not limited to, some or all of the following information:

Delay indication used to indicate the time interval between the first transmission or retransmission of the SA and the first transmission of the corresponding data Display information

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

Optionally, the delay indication information: occupying 7 bits.

Resource indication information:

The number of bits required at 10 MHz bandwidth is 11 bits;

Indicates the number of PRBs that the V2X system can use.

Transmit mode information, occupying 7 bits (in practice, it can be reduced, for example, 8 subframes, fixed transmission twice, the required number of bits is 3 bits; or it can also indicate that within 128 subframes, fixed transmission twice) means The sub-frame occupied by each transmission within a time window. The number of the subframe is the relative number with the start of the time window being 0. The transmission mode information actually indicates the subframe resources occupied by the data transmission within the time window. This time window is based on the SA retransmission subframe + delay indication.

Modulation and coding scheme: occupy 5 bits.

Next effective interval: occupying 2 bits, the receiving side can know the sending time of the next data in advance, so that it can be prepared in advance (for example, you can set infinity (or invalid value), 100ms, 500ms, 1000ms. If it is infinite (or invalid) Value), the receiving side knows that after the next data reception is completed, the entire data is received, and there is no continuous data to be sent later).

Timing advance: occupy 11 bits.

Collision information: may be any information that can indicate that a collision occurs when the V2X transmitting terminal is received as a V2X receiving terminal, for example, a collision may occur on a resource indicated by the SA information. The number of terminals or the terminal identifier of the terminal on which the resource indicated by the SA collides;

If the number of terminals colliding on the resource indicated by the SA is 3, the collision may occur at most 3 times, so 2 bits can be occupied, and 0, 1, 2 or 3 collision indication information is transmitted in the indication data;

If it is the terminal identifier of the terminal that collides, in general, there are 3 collisions, so 24 bits can be occupied to indicate 3 collision indications. Each collision indication is an 8-bit terminal identifier. If the terminal identifier is 00000000, Indicates that the indication is empty.

The terminal identifier of the V2X transmitting terminal, such as the UEID (terminal identifier): occupies 8 bits.

In an implementation, if only the collision information needs to be notified, the SA of the embodiment of the present disclosure may contain only collision information, and such a design may reduce transmission overhead.

If the collision information includes a plurality of (0 to 3) terminal configurations of the conflicting terminal, only 24 bits are needed at most, and the delay indication, the resource indication, and the transmission mode of the collision are not required to be carried;

If the collision information includes the number of terminals in which the collision occurs, the number of collisions may be sent on the SA, and the ID of the collision is transmitted in the same channel as the data, and the modulation mode and the coding rate of the collision ID are fixed. .

In the transmission, the SA containing the collision information can be transmitted first, and then the data is transmitted. Therefore, it is only necessary to reserve 2 bits in the SA to indicate conflict indication information of several terminals in the corresponding resource.

In order to reduce the interference of the SA data on the service data, the SA transmit power can be reduced when the SA information is sent.

Optionally, when transmitting, the SA may adopt one PRB bearer and QPSK (Quadrature Phase Shift Keying) modulation, and the effective coding rate is 0.28 (38 bits) or 0.34 (49 bits).

Optionally, if the subframe carrying the SA is the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information in the same subframe as the SA.

For example, the subframe A for transmitting SA1 is also a subframe for transmitting data 2, and the data corresponding to SA1 is data 1, and the data modulation and coding information in SA1 is data modulation and coding information of data 2. Not data modulation and coding information for data 1.

The advantage is that if the V2X receiving terminal does not receive the SA corresponding to the data in the same subframe of the SA, the data may be modulated and encoded according to the received SA, and the PRB allocation granularity. Perform blind detection on the subframe carrying the SA.

The above example is used to illustrate that the V2X receiving terminal does not receive the SA corresponding to the data 2, and the V2X receiving terminal can perform blind detection on the subframe carrying the SA1 according to the data modulation and coding information in the SA1 and the PRB allocation granularity. So that data 2 can be obtained.

Optionally, if the subframe carrying the SA is not the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information of the data corresponding to the SA.

For example, if there is no data on the subframe A for transmitting SA1 and the data corresponding to SA1 is data 1, the data modulation and coding information in SA1 is the data modulation and coding information of the data 1.

In the implementation, when the V2X receiving terminal finds a conflict, the ID information of the collision is sent along with the data. That is, the ID information of the collision is independently encoded, but is transmitted on the same physical channel as the data is multiplexed.

The embodiment of the present disclosure can set the power threshold Ps of the SA. The SA is considered to be the collision determination SA only if the SA is correctly decoded and the received power of the SA exceeds the power threshold Ps. For example, in the V2X communication process, the V2X transmitting terminal broadcasts its location information, so the V2X receiving terminal can count the minimum receiving power of the SA within the target communication range; or

The distance threshold of the SA can be set. Only the SA is correctly decoded, and the distance between the V2X terminal that sends the SA and the V2X terminal that receives the SA is less than the distance threshold, and the SA is considered to be the collision determination SA. For example, in the V2X communication process, the V2X terminal receiving the SA can know the distance between itself and the V2X terminal that sends the SA through the location information of the data indicated by the SA. If the distance is less than the distance threshold, the SA is considered to be the conflict determination SA.

If the V2X receiving terminal does not receive the data sent by the same terminal indicated by the conflict determination SA continuously, the conflict information of the terminal is sent.

Specifically, if the V2X sending terminal sends the SA through the available resources of the SA, and the number of passes through Before the data is transmitted by the available resources, the V2X transmitting terminal receives the other SAs as the V2X receiving terminal, and receives the received power of the other SAs that is greater than the set power threshold or the V2X transmitting terminal and the V2X terminal that sends the other SAs. If the distance between the distances is less than the distance threshold, determining that the other SAs received are conflict determination SAs;

For example, the V2X transmitting terminal receives the SA1 in the subframe A as the receiving terminal, and the receiving power of the receiving SA1 is greater than the set power threshold or the distance between the V2X transmitting terminal and the V2X terminal transmitting the other SA is less than the distance threshold. a value, determining that the SA1 is a conflict determination SA;

If the V2X transmitting terminal does not successfully receive the data corresponding to the SA1, the collision information for the SA1 is generated.

The V2X transmitting terminal carries the collision information of the SA1 when the SA is sent next time. The SA carrying the collision information of the SA1 may be sent when the V2X transmitting terminal has data to be transmitted, or may be sent when there is no data to be sent, but only to notify the terminal that collided.

If the collision information is the number of terminals on the resource indicated by the SA;

When the V2X transmitting terminal sends data through the data available resource, the terminal identifier of the terminal that collided is also sent through the data available resource.

For example, the V2X transmitting terminal generates the collision information for the SA1, and sends the SA2 carrying the collision information of the SA1 when the V2X transmitting terminal needs to send the data;

Then, the V2X transmitting terminal may send the terminal identifier of the colliding terminal corresponding to the collision information of the SA1 on the subframe that carries the data corresponding to the SA2.

As shown in FIG. 3, the first V2X transmitting terminal of the embodiment of the present disclosure includes:

The resource determining module 300 is configured to determine an available resource of the SA from the SA resource pool, and determine a data available resource from the data resource pool, where the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, The data available resources corresponding to the SA are located after the available resources of the SA;

The transmitting module 310 is configured to send the SA through the SA available resources, and send the data through the available resources. Send data.

Optionally, the resource determining module 300 is specifically configured to:

The transmission module is specifically configured to:

Optionally, the resource determining module 300 is specifically configured to:

Optionally, the transmission module 310 is specifically configured to:

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

Optionally, the resource determining module 300 is specifically configured to:

Randomly selecting at least two subframes from the SA resource pool;

The transmission module is specifically configured to:

The SA is transmitted separately for each subframe selected.

Optionally, the SA includes some or all of the following information:

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

Optionally, the transmission module 310 is further configured to:

The transmission module 310 is further configured to:

As shown in FIG. 4, the first V2X receiving terminal of the embodiment of the present disclosure includes:

The SA receiving module 400 is configured to receive the SA by using the SA available resources in the SA resource pool;

The data receiving module 410 is configured to determine, by using an SA, a time-frequency resource used by the corresponding data, and receive data on the time-frequency resource;

Optionally, the SA receiving module 400 is specifically configured to:

The same SA received multiple times is soft merged.

Optionally, the SA includes some or all of the following information:

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

Optionally, the data receiving module 410 is further configured to:

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

As shown in FIG. 5, a second V2X transmitting terminal of the embodiment of the present disclosure includes:

The processor 501 is configured to read a program in the memory 504 and perform the following process:

The SA available resources are determined from the SA resource pool, and the data available resources are determined from the data resource pool. The SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data available resources corresponding to the SA are located. The SA is available after the resource is available; the transceiver 502 is utilized to transmit the SA through the SA available resources, and the data is transmitted through the data available resources.

The transceiver 502 is configured to receive and transmit data under the control of the processor 501.

Optionally, the processor 501 is specifically configured to:

The transmission module is specifically configured to:

Optionally, the processor 501 is specifically configured to:

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

Optionally, the processor 501 is specifically configured to:

Randomly selecting at least two subframes from the SA resource pool;

The transmission module is specifically configured to:

The SA is transmitted separately for each subframe selected.

Optionally, the SA includes some or all of the following information:

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

Optionally, the processor 501 is further configured to:

Sending the SA through the available resources of the SA, and receiving the other SAs before sending the data through the data available resources, and receiving the received power of the other SAs is greater than a set power threshold or the V2X transmitting terminal and the V2X transmitting the other SAs If the distance between the terminals is less than the distance threshold, then the connection is determined. The received other SA is a conflict determination SA. After the data corresponding to the conflict determination SA is not successfully received, the collision information for the conflict determination SA is generated.

The processor 501 is further configured to:

In FIG. 5, a bus architecture (represented by bus 500), bus 500 may include any number of interconnected buses and bridges, and bus 500 will include one or more processors and memory 504 represented by general purpose processor 501. The various circuits of the memory are linked together. The bus 500 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 503 provides an interface between bus 500 and transceiver 502. Transceiver 502 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 502 receives external data from other devices. The transceiver 502 is configured to send the processed data of the processor 501 to other devices. Depending on the nature of the computing system, a user interface 505 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 501 is responsible for managing the bus 500 and the usual processing, running a general purpose operating system as described above. The memory 504 can be used to store data used by the processor 501 when performing operations.

Optionally, the processor 501 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).

As shown in FIG. 6, the second V2X receiving terminal of the embodiment of the present disclosure includes:

The processor 601 is configured to read a program in the memory 604 and perform the following process:

Receiving, by the transceiver 602, the SA through the SA available resources in the SA resource pool; determining, by the SA, the time-frequency resource used by the corresponding data, and receiving the data on the time-frequency resource;

The transceiver 602 is configured to receive and transmit data under the control of the processor 601.

Optionally, the processor 601 is specifically configured to:

The same SA received multiple times is soft merged.

Optionally, the SA includes some or all of the following information:

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

Optionally, the processor 601 is further configured to:

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

In FIG. 6, a bus architecture (represented by bus 600), bus 600 may include any number of interconnected buses and bridges, and bus 600 will include one or more processors and memory 604 represented by general purpose processor 601. The various circuits of the memory are linked together. The bus 600 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein. Bus interface 603 provides an interface between bus 600 and transceiver 602. Transceiver 602 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 602 receives external data from other devices. The transceiver 602 is configured to send the processed data of the processor 601 to other devices. Depending on the nature of the computing system, a user interface 605 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 601 is responsible for managing the bus 600 and the usual processing, running a general purpose operating system as described above. The memory 604 can be used to store data used by the processor 601 in performing operations.

Optionally, the processor 601 can be a CPU, an ASIC, an FPGA, or a CPLD.

As shown in FIG. 7, the first method for resource scheduling in the embodiment of the present disclosure includes:

Step 700: The V2X sending terminal determines the available resources of the SA from the SA resource pool, and determines the data available resources from the data resource pool, where the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, SA Corresponding data available resources are located after the SA available resources;

Step 701: The V2X sending terminal sends the SA through the SA available resource, and sends the data through the data available resource.

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

Optionally, the SA includes some or all of the following information:

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

As shown in FIG. 8, the second method for resource scheduling in the embodiment of the present disclosure includes:

Step 800: The V2X receiving terminal receives the SA through the SA available resources in the SA resource pool.

Step 801: The V2X determines, by using an SA, a time-frequency resource used by the corresponding data, and receives data on the time-frequency resource.

Optionally, the V2X receiving terminal receives the SA through the SA available resources in the SA resource pool, including:

Optionally, the SA includes some or all of the following information:

Resource indication information indicating a resource indicated by the SA;

Data modulation and coding information;

The terminal identifier of the V2X transmitting terminal.

Optionally, after the V2X receiving terminal receives the SA through the SA available resources in the SA resource pool, the method further includes:

The PRB allocation granularity is Y PRBs, and Y is a positive integer.

As shown in FIG. 9, the resource collision indication method of the embodiment of the present disclosure includes:

Step 900: The V2X terminal generates collision information after determining that a collision occurs on the resource corresponding to the received SA.

Step 901: When the V2X terminal needs to send the SA, the collision information is placed in the SA and sent.

The collision information of the embodiment of the present disclosure is information for indicating that a collision occurs when the V2X transmitting terminal is received as a V2X receiving terminal.

Collision information: may be any information that can indicate that a collision occurs when the V2X transmitting terminal is received as a V2X receiving terminal, for example, the number of terminals that collide on the resource indicated by the SA information, or the resource indicated by the SA The terminal identifier of the terminal that collided;

The terminal identifier of the V2X transmitting terminal, such as UEID: occupying 8 bits.

If the collision information includes a plurality of (0 to 3) terminal configurations of the conflicting terminal, only 24 bits are required at most, and the delay indication, the resource indication, and the transmission mode are not required to be carried;

If the collision information includes the number of terminals in which the collision occurred, the SA containing the collision information may be When transmitted with data, the modulation scheme and coding rate of the SA are fixed.

Optionally, the V2X receives the SA, and the received power of the received SA is greater than a set power threshold or the distance between the V2X transmitting terminal and the V2X terminal that sends the other SA is less than a distance threshold. Determining that the received SA is a conflict determination SA;

For example, if the V2X terminal receives the SA1 on the subframe A, and the received power of the receiving SA1 is greater than the set power threshold or the distance between the V2X terminal and the V2X terminal that sends the other SA is less than the distance threshold, Determining that the SA1 is a conflict determination SA;

If the V2X terminal does not successfully receive the data corresponding to the SA1, the collision information for the SA1 is generated.

The V2X terminal carries the collision information of the SA1 when the SA is sent next time. The SA carrying the collision information of the SA1 may be sent when the V2X transmitting terminal has data to be transmitted, or may be sent when there is no data to be sent, but only to notify the terminal that collided.

Optionally, if the collision information is the number of terminals that collide on the resource indicated by the SA;

When the V2X terminal needs to send the SA, the collision information is placed in the SA, and after being sent, the V2X terminal sends the terminal of the terminal that collided by using the data available resource for sending the data corresponding to the SA. Logo.

The V2X transmitting terminal may send the touch of the SA1 on the subframe that carries the data corresponding to the SA2. The terminal identifier of the terminal that collided with the collision information.

As shown in FIG. 10, the first resource collision indication terminal of the embodiment of the present disclosure includes:

The generating module 1000 is configured to generate collision information after determining that a collision occurs on the resource corresponding to the received SA;

The sending module 1010 is configured to: when the SA needs to be sent, place the collision information in the SA and send the information.

Optionally, the generating module 1000 is specifically configured to:

The sending module 1010 is further configured to:

As shown in FIG. 11, the second resource collision indication terminal of the embodiment of the present disclosure includes:

The processor 1101 is configured to read a program in the memory 1104 and perform the following process:

After the collision occurs on the resource corresponding to the received SA, collision information is generated; when the SA needs to be transmitted, the collision information is placed in the SA and transmitted by the transceiver 1102.

The transceiver 1102 is configured to receive and transmit data under the control of the processor 1101.

Optionally, the processor 1101 is specifically configured to:

The processor 1101 is further configured to:

In FIG. 11, a bus architecture (represented by bus 1100), bus 1100 can include any number of interconnected buses and bridges, and bus 1100 will include one or more processors and memory 1104 represented by general purpose processor 1101. The various circuits of the memory are linked together. The bus 1100 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein. Bus interface 1103 provides an interface between bus 1100 and transceiver 1102. The transceiver 1102 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 1102 receives external data from other devices. The transceiver 1102 is configured to send the processed data of the processor 1101 to other devices. Depending on the nature of the computing system, a user interface 1105 can also be provided, such as a keypad, display, speaker, microphone, joystick.

The processor 1101 is responsible for managing the bus 1100 and the usual processing, running a general purpose operating system as described above. The memory 1104 can be used to store data used by the processor 1101 when performing operations.

Optionally, the processor 1101 may be a CPU, an ASIC, an FPGA, or a CPLD.

The present application has been described above with reference to block diagrams and/or flowchart illustrations of a method, apparatus (system) and/or computer program product according to embodiments of the present application. It should be understood that it can be implemented by computer program instructions. A block of the block diagrams and/or flowchart illustrations and combinations of blocks of the block diagrams and/or flowchart illustrations. These computer program instructions may be provided to a general purpose computer, a processor of a special purpose computer, and/or other programmable data processing apparatus to produce a machine such that instructions for execution via a computer processor and/or other programmable data processing apparatus are created for A method of implementing the functions/actions specified in the block diagrams and/or flowchart blocks.

Accordingly, the application can also be implemented in hardware and/or software (including firmware, resident software, microcode, etc.). Still further, the application can take the form of a computer program product on a computer usable or computer readable storage medium having computer usable or computer readable program code embodied in a medium for use by an instruction execution system or Used in conjunction with the instruction execution system. In the context of the present application, a computer usable or computer readable medium can be any medium that can contain, store, communicate, communicate, or transport a program for use by an instruction execution system, apparatus or device, or in conjunction with an instruction execution system, Used by the device or device.

It is apparent that those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the disclosure. Thus, the present disclosure is intended to cover such modifications and variations as the modifications and variations of the present invention are intended to be included.

Claims

A method for resource scheduling, the method comprising:

The vehicle and the universal V2X transmitting terminal determine the SA available resources from the scheduling allocation information SA resource pool, and determine the data available resources from the data resource pool, wherein the SA resource pool and the data resource pool are consecutive in the time domain and are performed in the frequency domain. Dividing, the data available resources corresponding to the SA are located after the available resources of the SA;

The V2X transmitting terminal sends the SA through the SA available resources, and sends the data through the data available resources.
The method of claim 1, wherein the V2X transmitting terminal determines the SA available resources from the SA resource pool, including:

The V2X transmitting terminal determines, from the SA resource pool, a subframe for transmitting the SA for the first time, and a subframe for retransmitting the SA;

The V2X sending terminal sends the SA through the available resources of the SA, including:

The V2X transmitting terminal transmits the SA through the determined subframe for the first transmission, and transmits the SA through the subframe for retransmission.
The method of claim 2, wherein the V2X transmitting terminal determines, from the SA resource pool, a subframe for the first transmission, and a subframe for retransmission, including:

The V2X transmitting terminal determines, from the SA resource pool, an even subframe as a subframe for the first transmission, and determines that the odd subframe is a subframe for retransmission.
The method of claim 3, wherein the V2X transmitting terminal transmits the SA by determining the subframe for the first transmission and the SA by the subframe for retransmission, including:

The V2X transmitting terminal transmits the SA through the mth (i)th physical resource block PRB of the even subframe L(i), and transmits the SA through the m(i+1)th PRB of the odd subframe L(i+1) ;

If the maximum time interval between the first transmission and the retransmission is L-1 subframes, and the number of available PRBs in each subframe is M, then:

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

Where x is the number of times the SA is transmitted, M and L are even numbers, and m(i) is in the range of 0 to M-1. The value of i ranges from 0 to x-1.
The method of claim 1, wherein the V2X transmitting terminal determines the SA available resources from the SA resource pool, including:

The V2X transmitting terminal randomly selects at least two subframes from the SA resource pool;

The V2X sending terminal sends the SA through the available resources of the SA, including:

The V2X transmitting terminal separately transmits the SA by each selected subframe.
The method of any one of claims 1 to 5, wherein the SA comprises some or all of the following information:

Delay indication information indicating a time interval between the first transmission or retransmission of the SA and the first transmission of the corresponding data;

Resource indication information indicating a resource indicated by the SA;

Transmission mode information indicating a subframe resource occupied by the data transmission in the time window;

Data modulation and coding information;

Length indication information indicating the effective interval of the next data;

Means for indicating the timing advance of the transmission clock of the terminal relative to the reception clock;

Used to indicate collision information detected when the V2X transmitting terminal is received as a V2X receiving terminal;

The terminal identifier of the V2X transmitting terminal.
The method according to claim 6, wherein the collision information is a number of terminals on which a resource indicated by the SA collides or a terminal identifier of a terminal on which a resource indicated by the SA collides.
The method of claim 6, wherein the subframe carrying the SA is the same subframe as the subframe carrying the data;

The PRB allocation granularity is Y PRBs, and Y is a positive integer.
The method according to claim 8, wherein if the subframe carrying the SA is the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding in the same subframe as the SA. information;

If the subframe carrying the SA is not the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information of the data corresponding to the SA.
The method of claim 6, wherein the V2X transmitting terminal is available through the SA Before the resource sends the SA and sends data through the data available resources, it also includes:

If the V2X transmitting terminal receives the other SAs as the V2X receiving terminal, and the received power of the other SAs is greater than the set power threshold, or the distance between the V2X transmitting terminal and the V2X terminal that sends the other SAs is less than The distance threshold is determined, and the received other SA is determined to be a conflict determination SA;

After the V2X transmitting terminal does not successfully receive the data corresponding to the conflict determination SA, the V2X transmitting terminal generates collision information for the conflict determination SA.
The method of claim 10, wherein the collision information is the number of terminals on the resource indicated by the SA;

The V2X transmitting terminal sends data by using data available resources, and further includes:

The V2X transmitting terminal sends the terminal identifier of the terminal that collided through the data available resource.
A method for resource scheduling, the method comprising:

The V2X receiving terminal receives the SA through the SA available resources in the SA resource pool;

The V2X determines, by the SA, a time-frequency resource used by the corresponding data, and receives data on the time-frequency resource;

The time-frequency resource used by the corresponding data is located in the data resource pool, and the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data available resources corresponding to the SA are located after the SA available resources. .
The method of claim 12, wherein the V2X receiving terminal receives the SA through the SA available resources in the SA resource pool, including:

The V2X transmitting terminal performs soft combining on the same SA that is received multiple times.
The method of claim 12, wherein the SA comprises some or all of the following information:

Delay indication information indicating a time interval between the first transmission or retransmission of the SA and the first transmission of the corresponding data;

Resource indication information indicating a resource indicated by the SA;

Transmission mode information indicating a subframe resource occupied by the data transmission in the time window;

Data modulation and coding information;

Length indication information indicating the effective interval of the next data;

Means for indicating the timing advance of the transmission clock of the terminal relative to the reception clock;

Used to indicate collision information detected when the V2X transmitting terminal is received as a V2X receiving terminal;

The terminal identifier of the V2X transmitting terminal.
The method according to claim 14, wherein if the subframe carrying the SA is the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding in the same subframe as the SA. information;

If the subframe carrying the SA is not the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information of the data corresponding to the SA.
The method of claim 14, wherein after the V2X receiving terminal receives the SA through the SA available resources in the SA resource pool, the method further includes:

If the V2X receiving terminal does not receive the SA corresponding to the data in the same subframe of the SA, according to the received data modulation and coding information in the SA, and the PRB allocation granularity, the bearer of the SA is carried. Sub-frames are blindly tested;

The PRB allocation granularity is Y PRBs, and Y is a positive integer.
A resource collision indication method, the method comprising:

The V2X terminal generates collision information after determining that a collision occurs on the resource corresponding to the received SA;

When the V2X terminal needs to send the SA, the collision information is placed in the SA and sent.
The method according to claim 17, wherein the collision information is a number of terminals on which a resource indicated by the SA collides or a terminal identifier of a terminal on which a resource indicated by the SA collides.
The method of claim 18, wherein the V2X terminal generates collision information after a collision occurs on the resource corresponding to the SA, including:

The V2X determines that the received SA is received, and the received power of the received SA is greater than a set power threshold or the distance between the V2X terminal and the V2X terminal that sends the other SA is less than a distance threshold, and the received SA is the conflict judgment SA;

After the V2X terminal does not successfully receive the data corresponding to the conflict determination SA, the V2X terminal determines that a collision occurs on the resource corresponding to the conflict determination SA, and generates collision information for the conflict determination SA.
The method of claim 19, wherein the collision information is the number of terminals on the resource indicated by the SA;

When the V2X terminal needs to send the SA, the collision information is placed in the SA, and after being sent, the method further includes:

The V2X terminal sends the terminal identifier of the terminal that collided by using the data available resource for transmitting the data corresponding to the SA.
A V2X transmitting terminal for resource scheduling, the V2X transmitting terminal includes:

a resource determining module, configured to determine an available resource of the SA from the SA resource pool, and determine a data available resource from the data resource pool, where the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, SA Corresponding data available resources are located after the SA available resources;

The transmission module is configured to send the SA through the SA available resources, and send the data through the data available resources.
The terminal of claim 21, wherein the resource determining module is specifically configured to:

Determining, from the SA resource pool, a subframe for transmitting the SA for the first time, and a subframe for retransmitting the SA;

The transmission module is specifically configured to:

The SA is transmitted through the determined subframe for the first transmission, and the SA is transmitted through the subframe for retransmission.
The terminal of claim 22, wherein the resource determining module is specifically configured to:

The even subframe is determined from the SA resource pool as a subframe for the first transmission, and the odd subframe is determined to be a subframe for retransmission.
The terminal of claim 23, wherein the transmission module is specifically configured to:

Transmitting SA through the mth (i)th PRB of the even subframe L(i), and transmitting the SA through the mth (i+1)th PRB of the odd subframe L(i+1);

If the maximum time interval between the first transmission and the retransmission is L-1 subframes, and the number of available PRBs in each subframe is M, then:

m(i+1)=(m(i)+M/x)mod(M);

L(i+1)=L(i)+(m(i)*x)mod(L)+1;

Where x is the number of times the SA is transmitted, M and L are even numbers, m(i) ranges from 0 to M-1, and i ranges from 0 to x-1.
The terminal of claim 21, wherein the resource determining module is specifically configured to:

Randomly selecting at least two subframes from the SA resource pool;

The transmission module is specifically configured to:

The SA is transmitted separately for each subframe selected.
The terminal according to any one of claims 21 to 25, wherein the SA contains some or all of the following information:

Delay indication information indicating a time interval between the first transmission or retransmission of the SA and the first transmission of the corresponding data;

Resource indication information indicating a resource indicated by the SA;

Transmission mode information indicating a subframe resource occupied by the data transmission in the time window;

Data modulation and coding information;

Length indication information indicating the effective interval of the next data;

Means for indicating the timing advance of the transmission clock of the terminal relative to the reception clock;

Used to indicate collision information detected when the V2X transmitting terminal is received as a V2X receiving terminal;

The terminal identifier of the V2X transmitting terminal.
The terminal according to claim 26, wherein the collision information is a number of terminals on which a resource indicated by the SA is collided or a terminal identifier of a terminal on which a resource indicated by the SA collides.
The terminal according to claim 26, wherein if the subframe carrying the SA is the same subframe as the subframe carrying the data;

The PRB allocation granularity is Y PRBs, and Y is a positive integer.
The terminal according to claim 28, wherein if the subframe carrying the SA and the subframe carrying the data are the same subframe, the data modulation and coding information is data modulation and coding in the same subframe as the SA. information;

If the subframe carrying the SA is not the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information of the data corresponding to the SA.
The terminal of claim 26, wherein the transmission module is further configured to:

Sending SA through SA available resources, and receiving other SAs before sending data through data available resources, and receiving received power of the other SAs is greater than a set power threshold or V2X If the distance between the transmitting terminal and the V2X terminal that sends the other SA is less than the distance threshold, it is determined that the received other SA is a conflict determination SA; and the data corresponding to the conflict determination SA is not successfully received in the set number of times. After that, collision information for the conflict determination SA is generated.
The terminal according to claim 30, wherein the collision information is the number of terminals on the resource indicated by the SA;

The transmission module is further configured to:

The terminal identifier of the terminal that collided is transmitted through the data available resource.
A V2X receiving terminal for resource scheduling, the V2X receiving terminal includes:

The SA receiving module is configured to receive the SA through the SA available resources in the SA resource pool;

a data receiving module, configured to determine, by using an SA, a time-frequency resource used by the corresponding data, and receive data on the time-frequency resource;

The time-frequency resource used by the corresponding data is located in the data resource pool, and the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data available resources corresponding to the SA are located after the SA available resources. .
The terminal of claim 32, wherein the SA receiving module is specifically configured to:

The same SA received multiple times is soft merged.
The terminal of claim 32, wherein the SA comprises some or all of the following information:

Delay indication information indicating a time interval between the first transmission or retransmission of the SA and the first transmission of the corresponding data;

Resource indication information indicating a resource indicated by the SA;

Transmission mode information indicating a subframe resource occupied by the data transmission in the time window;

Data modulation and coding information;

Length indication information indicating the effective interval of the next data;

Means for indicating the timing advance of the transmission clock of the terminal relative to the reception clock;

Used to indicate collision information detected when the V2X transmitting terminal is received as a V2X receiving terminal;

The terminal identifier of the V2X transmitting terminal.
The terminal according to claim 34, wherein if the number of bearers and bearers carrying the SA is According to the same subframe, the data modulation and coding information is data modulation and coding information in the same subframe as the SA;

If the subframe carrying the SA is not the same subframe as the subframe carrying the data, the data modulation and coding information is data modulation and coding information of the data corresponding to the SA.
The terminal of claim 34, wherein the data receiving module is further configured to:

If the V2X receiving terminal does not receive the SA corresponding to the data in the same subframe of the SA, according to the received data modulation and coding information in the SA, and the PRB allocation granularity, the bearer of the SA is carried. Sub-frames are blindly tested;

The PRB allocation granularity is Y PRBs, and Y is a positive integer.
A resource collision indication V2X terminal, the V2X terminal includes:

a generating module, configured to generate collision information after a collision occurs on the resource corresponding to the received SA;

And a sending module, configured to: when the SA needs to be sent, place the collision information in the SA and send the information.
The terminal according to claim 37, wherein the collision information is a number of terminals on which a resource indicated by the SA is collided or a terminal identifier of a terminal on which a resource indicated by the SA collides.
The terminal of claim 38, wherein the generating module is specifically configured to:

After receiving the SA, and the received power of the received SA is greater than the set power threshold or the distance between the V2X terminal and the V2X terminal transmitting the other SA is less than the distance threshold, determining that the received SA is a collision After determining that the data corresponding to the conflict determination SA is not successfully received, the collision is determined on the resource corresponding to the conflict determination SA, and collision information for the conflict determination SA is generated.
The terminal according to claim 39, wherein the collision information is the number of terminals on the resource indicated by the SA;

The sending module is further configured to:

The terminal identifier of the terminal that collided is transmitted by the data available resource for transmitting the data corresponding to the SA.
A resource scheduling V2X transmitting terminal includes:

Processor;

a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations;

a transceiver for communicating with various other devices on a transmission medium,

When the processor calls and executes the program and data stored in the memory, the V2X transmitting terminal performs the following processing:

The SA available resources are determined from the SA resource pool, and the data available resources are determined from the data resource pool. The SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data available resources corresponding to the SA are located. After the SA is available for resources;

The SA is sent through the SA available resources, and the data is sent through the data available resources.
A resource scheduling V2X receiving terminal includes:

Processor;

a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations;

a transceiver for communicating with various other devices on a transmission medium,

When the processor calls and executes the program and data stored in the memory, the V2X receiving terminal performs the following processing:

Receiving the SA through the SA available resources in the SA resource pool;

Determining, by the SA, a time-frequency resource used by the corresponding data, and receiving data on the time-frequency resource;

The time-frequency resource used by the corresponding data is located in the data resource pool, and the SA resource pool and the data resource pool are consecutive in the time domain, and are divided in the frequency domain, and the data available resources corresponding to the SA are located after the SA available resources. .
A resource collision indication V2X terminal includes:

Processor;

a memory coupled to the processor via a bus interface and configured to store programs and data used by the processor in performing operations;

a transceiver for communicating with various other devices on a transmission medium,

When the processor calls and executes the program and data stored in the memory, the V2X terminal performs the following processing:

After the collision occurs on the resource corresponding to the received SA, the collision information is generated;

When the SA needs to be sent, the collision information is placed in the SA and transmitted.