WO2017118229A1

WO2017118229A1 - Resource scheduling method, device and system

Info

Publication number: WO2017118229A1
Application number: PCT/CN2016/106422
Authority: WO
Inventors: 王文焕; 卢有雄; 黄双红; 杨瑾
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-01-07
Filing date: 2016-11-18
Publication date: 2017-07-13
Also published as: CN106954272A

Abstract

Disclosed are a resource scheduling method, device and system. The method comprises the following steps: a base station receiving a vehicle-to-X (V2X) semi-persistent scheduling request sent by a V2X user equipment over a predetermined resource (201); and the base station learning the size of a data package requested by the V2X user equipment according to the V2X semi-persistent scheduling request, and scheduling a V2X resource for the V2X user equipment according to the size of the requested data package. By means of the embodiments of the present invention, the low latency required by V2X communication is satisfied.

Description

Resource scheduling method, device and system

Technical field

The embodiment of the invention relates to a Long Term Evolution Vehicle-to-X (LTE-V2X) communication network, and particularly to a resource scheduling method, device and system.

Background technique

Vehicle-to-the-air (V2X, Vehicle-to-X) includes V2V, Vehicle-to-Vehicle, Vehicle-to-Infrastructure/Network (V2I/N, Vehicle-to-Infrastructure/Network), and Vehicle-to-Person (V2P, Vehicle) -to-Pedestrian). V2X communication can be understood as vehicle-to-device (D2D, Device-to-Device) communication. The difference between V2X communication and D2D communication in version 12 (R12, Release 12) is that the moving speed is increased and the user density is increased. The reliability requirements are high, and the conventional D2D communication may not need to consider such demanding requirements. Therefore, the relevant mechanism of D2D communication cannot meet the V2X requirements, and must be optimized according to the characteristics of V2X.

Due to the demanding delay requirement of V2X, the scheduling period is shortened to improve the overhead of the control channel, especially the periodic broadcast service. The size of the V2X data packet changes little. For Mode 1 communication, it is under the base station scheduling. It has better performance and reliability, no resource collision, but the control overhead between the base station (eNB, evolved Node B) and the V2X user equipment is too large, so the semi-constant scheduling (SPS) of Long Term Evolution (LTE) , Semi-Persistent Scheduling) can effectively reduce the control overhead in V2X. Therefore, it is inevitable to study the application and improvement process of SPS in V2X.

The related LTE SPS is designed for a specific service and needs to be activated/released. For the case where the data is cyclically strong and the size of the data packet is basically fixed, the RRC (Radio Resource Control) is configured to the user equipment. (UE, User Equipment), in the case of SPS Enabled, activated by a Physical Downlink Control Channel (PDCCH), and continuously transmits an empty medium access control (MAC, Medium) by transmitting a PDCCH or a UE. Access Control) BSR (Buffer Status Report) to deactivate.

FIG. 1 is a schematic diagram of an SPS request procedure related to LTE. As shown in Figure 1, if the UE does not have uplink data to transmit in LTE, the eNB does not need to allocate uplink resources to the UE. Otherwise, resources are wasted. Therefore, the UE needs to tell the eNB whether it needs to have uplink data transmission. The LTE is provided with an uplink scheduling request (SR, Scheduling Request). The related mechanism is that the UE tells the eNB whether the uplink resource is required by the SR, but does not tell the eNB how much uplink data to transmit, and also needs to report the required number of resources through the BSR. The specific process is: the UE sends an SR, and the request is sent. The eNB configures a Physical Uplink Shared Channel (PUSCH) resource through the PDCCH, and the UE sends a BSR, and the eNB schedules the periodically transmitted resource according to the BSR through the PDCCH.

However, V2X communication requires low latency, requires shortened request delay, and its packet size maintains the same volume according to different requirements and maintains the same packet size when environmental conditions change little. The method of requesting a delay.

Summary of the invention

In order to solve the above technical problem, an embodiment of the present invention provides a resource scheduling method, apparatus, and system, which can meet the requirement of low latency for V2X communication.

In order to achieve the above object, an embodiment of the present invention provides a resource scheduling method, including: receiving, by a base station, a V2X semi-persistent scheduling request (SPS-R, Semi-Persistent Scheduling Request) sent by a V2X user equipment on a predetermined resource; The V2X SPS-R learns the data packet size requested by the V2X user equipment, and schedules the V2X resource for the V2X user equipment according to the requested data packet size.

The embodiment of the present invention further provides a resource scheduling method, including: a V2X user equipment sends a V2X SPS-R to a base station according to a requested data packet size on a predetermined resource; and the V2X user equipment receives the base station according to the V2X SPS- Resource configuration information of the V2X resource scheduled by the R; the V2X user equipment sends the V2X information according to the resource configuration information on the corresponding V2X resource according to a predetermined period.

The embodiment of the invention further provides a resource scheduling apparatus, which is applied to a base station, and includes: a first connection The receiving module is configured to receive the V2X SPS-R sent by the V2X user equipment on the predetermined resource; the scheduling module is configured to learn, according to the V2X SPS-R, the data packet size requested by the V2X user equipment, and according to the requested data The packet size is for the V2X user equipment to schedule V2X resources.

The embodiment of the present invention further provides a resource scheduling apparatus, which is applied to a V2X user equipment, and includes: a first sending module, configured to send a V2X SPS-R to a base station according to a requested data packet size on a predetermined resource; and a second receiving module, And configured to receive resource configuration information of the V2X resource scheduled by the base station according to the V2X SPS-R; and the second sending module is configured to send the V2X information according to the resource configuration information on the corresponding V2X resource according to a predetermined period.

The embodiment of the present invention further provides a resource scheduling system, including: a base station and a V2X user equipment, where the V2X user equipment is configured to send a V2X SPS-R to a base station according to a requested data packet size on a predetermined resource; the base station, And configured to receive the V2X SPS-R sent by the V2X user equipment on a predetermined resource, learn, according to the V2X SPS-R, a data packet size requested by the V2X user equipment, and set the V2X according to the requested data packet size. The user equipment is configured to schedule the V2X resource, and the V2X user equipment is further configured to receive resource configuration information of the V2X resource scheduled by the base station according to the V2X SPS-R, and according to the resource configuration information, according to the predetermined V2X resource. The V2X message is sent periodically.

In addition, an embodiment of the present invention further provides a computer readable storage medium, where computer executable instructions are stored, and when the computer executable instructions are executed, a resource scheduling method on a V2X user equipment side is implemented.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, and when the computer executable instructions are executed, implementing a resource scheduling method on a base station side.

In the embodiment of the present invention, a computer storage medium is further provided, and the computer storage medium may store an execution instruction, where the execution instruction is used to execute the resource scheduling method in the foregoing embodiment.

In the embodiment of the present invention, the V2X user equipment requests the semi-constant scheduling resource through the V2X SPS-R, and the base station learns the data packet size requested by the V2X user equipment according to the V2X SPS-R, and is the V2X user equipment according to the requested data packet size. Scheduling V2X resources, V2X user settings The V2X information is periodically broadcast on the configured V2X resources. As such, the present invention shortens the resource scheduling process, shortens the time for V2X user equipment to apply for resources, satisfies the demanding requirements of V2X communication for delay, and reduces the overhead of base station control signaling.

Moreover, the V2X user equipment can periodically broadcast V2X information to other V2X user equipments on the configured V2X resources until the V2X user equipment terminates the resource request. As such, the present invention can satisfy multiple uses of one scheduling resource, and whether or not to terminate resource usage is determined by the V2X user equipment according to environmental changes.

DRAWINGS

FIG. 1 is a schematic diagram of an SPS request process related to LTE;

2 is a flowchart of a resource scheduling method according to an embodiment of the present invention;

FIG. 3 is another flowchart of a resource scheduling method according to an embodiment of the present invention;

4 is a schematic diagram of a SPS-R request flow of a V2X according to an embodiment of the present invention;

5 is a schematic diagram of a relationship between a V2X control channel and a data channel according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a resource scheduling apparatus according to an embodiment of the present disclosure;

FIG. 7 is another schematic diagram of a resource scheduling apparatus according to an embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

FIG. 2 is a flowchart of a resource scheduling method according to an embodiment of the present invention. As shown in FIG. 2, the resource scheduling method provided in this embodiment includes the following steps:

Step 201: The base station receives a V2X semi-constant scheduling request (SPS-R, Semi-Persistent Scheduling Request) sent by the V2X user equipment on a predetermined resource;

Step 202: The base station learns the data packet size requested by the V2X user equipment according to the V2X SPS-R, and schedules the V2X resource for the V2X user equipment according to the requested data packet size.

Before the step 201, the method further includes: the base station adopts radio resource control (RRC, Radio Resource Control) signaling the predetermined resource.

Optionally, the base station configuring the predetermined resource by using RRC signaling, including:

The base station configures a scheduling request (SR, Scheduling Request) resource by using RRC signaling, where the predetermined resource is an SR resource without feedback of uplink acknowledgement information; or

The base station configures a V2X SPS-R resource dedicated to the V2X SPS-R through RRC signaling.

In an embodiment, the base station configures a physical uplink control channel (PUCCH, Physical Uplink Control CHannel) 1 resource, that is, an SR resource, for transmitting the V2X SPS-R through the sr-PUCCH-ResourceIndex field of the IE:SchedulingRequestConfig; During the downlink signal, the V2X user equipment may feed back the acknowledgment information ACK/NACK in the predetermined uplink subframe. Here, the V2X user equipment may send the V2X SPS-R on the subframe that does not feed back the uplink acknowledgment information ACK/NACK.

In another embodiment, the base station configures to transmit the SPS-R on the PUCCH1 resource related to the V2X SPS-R by adding an IE configuration, that is, the period and location of the SPS-R are configured by the base station through RRC signaling, and the resources are reserved. For resource requests for V2X communication, the base station knows which resources are used by which V2X user equipments for resource requests for V2X communication.

The base station allocates SPS-R parameters through the IE to allocate SPS-R resources to a certain UE, such as adding a spsr PUCCH-ResourceIndex in the scheduling request SchedulingRequestConfig, and preferentially SPS-R when the SPS-R resource conflicts with the SR resources. Resources.

Optionally, step 201 includes:

When the base station detects that the SR energy is higher than the uplink acknowledgment information energy, and the subframe where the SR is located does not feed back the uplink acknowledgment information, the base station learns that the V2X SPS-R sent by the V2X user equipment on the SR resource is received; or,

When the base station detects that the SPS-R energy is higher than the SR energy, the base station learns to receive the V2X SPS-R sent by the V2X user equipment on the V2X SPS-R resource.

Wherein, the base station detects that the SR energy is significantly higher than the ACK/NACK energy, and the subframe is not The ACK/NACK is fed back, and it is considered that the V2X user equipment sends V2X SPS-R or blind detection SR resource information on its SR resources; when the base station detects that the SPS-R energy is significantly higher than the SR energy, the V2X user equipment is considered to be in its SPS. The V2X SPS-R or the blind SPS-R resource information is sent on the -R resource.

Optionally, the base station learns, according to the V2X SPS-R, the data packet size requested by the V2X user equipment, including:

The base station decodes the resource information of the V2X SPS-R, and learns the data packet size requested by the V2X user equipment, where the data packet size requested by the V2X user equipment is modulated on the resource that sends the V2X SPS-R.

Optionally, the data packet size requested by the V2X user equipment is modulated by Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK) to transmit the V2X SPS-R. Resources.

Specifically, the base station detects the resource information of the SPS-R and decodes the resource information of the SPS-R to obtain the size of the request packet carried by the corresponding V2X user equipment, where the requested data packet type is (1 to 2) bits, such as Represents 2 to 4 packet sizes, where the corresponding packet size is pre-configured, and the packet size can be modulated to the configured SR resource or SPS-R by BPSK (two states) or QPSK modulation (four states). Resources.

Optionally, the base station, according to the requested data packet size, scheduling the V2X resource for the V2X user equipment, including: the base station adopts downlink control information according to the data packet size requested by the V2X user equipment (DCI, Downlink Control) The resource configuration information of the Semi-Persistent Scheduling (SPS) of the V2X user equipment is configured.

Optionally, the resource configuration information includes at least one of the following:

Control channel position indication information;

Data channel location indication information;

A fixed offset or offset between the data channel and the control channel.

Optionally, the resource configuration information further includes at least one of the following: scheduling period indication information, and resource size configuration parameter.

Specifically, the base station allocates the semi-constant scheduling resources of the V2X user equipment by using the PDCCH, and may allocate the neighboring V2X user equipments to different time domain subframes according to the road condition.

The semi-constant scheduling resource allocated by the base station divides the data resource allocated to the V2X user equipment into a fixed resource block according to the data resource size type of the V2X, and each fixed resource block includes N subframes and M resource blocks (RB, Resource). In order to ensure that the inter-listening N between the users is an integer and is as small as possible, such as N=1, the M includes the minimum data resource according to the category of the data resource, and the base station configures the resource configuration information of the semi-constant scheduling of the V2X user equipment by using the DCI. The following situations:

(1) when the control channel SA and the data channel are located in different subframes, and the corresponding relationship is not included, the resource configuration information includes at least: control channel location indication information and data channel location indication information;

(2) When the control channel and the data channel are in different subframes, and the time-frequency position is fixed time domain offset or frequency domain offset, the resource configuration information at least includes: control channel position indication information, between the data channel and the control channel Fixed offset, wherein the location of the data channel is obtained by control channel location indication information and a fixed offset from the control channel;

(3) when the control channel and the data channel are located in the same subframe and are adjacent in the frequency domain, the resource configuration information includes at least: control channel location indication information or data channel location indication information;

(4) When the control channel and the data channel are in the same subframe and the frequency domain is discontinuous, the resource configuration information includes at least: control channel position indication information and a frequency domain relative offset between the data channel and the control channel, wherein the relative offset The shift amount refers to the offset in units of data resource blocks, that is, offsets several data resource blocks;

The number of the time domain subframes and the number of the frequency domain resources may be pre-configured according to the type of the occupied resources, and the size of the resource block is indicated by the base station by using the data packet size of the SR resource or the SPS-R resource request or by using the scheduling parameter.

Optionally, the method further includes: when receiving the periodic broadcast termination request sent by the V2X user equipment, the base station terminates periodic resource allocation for the V2X user equipment.

FIG. 3 is another flowchart of a resource scheduling method according to an embodiment of the present invention. As shown in FIG. 3, the resource scheduling method provided in this embodiment includes the following steps:

Step 301: The V2X user equipment sends the V2X SPS-R to the base station on the predetermined resource according to the requested data packet size.

Step 302: The V2X user equipment receives resource configuration information of the V2X resource scheduled by the base station according to the V2X SPS-R.

Step 303: The V2X user equipment sends the V2X information according to the resource configuration information on the corresponding V2X resource according to a predetermined period.

Before the step 301, the method further includes: the V2X user equipment learns the predetermined resource according to the RRC signaling, where the predetermined resource includes the SR resource configured by the base station by using the RRC signaling without feedback of the uplink acknowledgement information or dedicated. V2X SPS-R resources.

Optionally, step 301 includes:

The V2X user equipment sends the V2X SPS-R on the SR resource without the uplink acknowledgement information feedback according to the SR resource configured by the base station, and modulates the requested data packet size on the resource that sends the V2X SPS-R; or

The V2X user equipment sends a V2X SPS-R on the V2X SPS-R resource configured by the base station, and modulates the requested data packet size on the resource that sends the V2X SPS-R.

Optionally, the V2X user equipment modulates the requested data packet size on the resource that sends the V2X SPS-R, including: transmitting the requested data packet size by BPSK or QPSK modulation on the V2X SPS- R's resources.

Optionally, the method further includes: when the operating environment of the V2X user equipment changes, the V2X user equipment sends a periodic broadcast termination request to the base station.

Optionally, the V2X information includes V2X control information and V2X data information.

Optionally, the V2X control information includes at least one of the following: data channel location indication information, scheduling period indication information, and resource size configuration parameters.

The present application is described in detail below by way of specific examples.

Embodiment 1

In this embodiment, the UE performs a V2X resource request by using the SR resource allocated by the base station.

Specifically, referring to FIG. 4, the implementation process of this embodiment is as follows:

(1) The V2X user equipment (UE) learns the physical uplink control channel (PUCCH, Physical Uplink Control CHannel) 1 resource configured by the sr-PUCCH-ResourceIndex field of the IE: SchedulingRequestConfig according to the RRC (Radio Resource Control) signaling. Get the location and period of its resource scheduling request (SR, Scheduling Request).

(2) The UE performs a V2X resource request by using the SR resource that is not fed back with acknowledgment information (ACK/NACK).

Optionally, according to the requested data packet size, if the configuration data packet is two types (190B and 300B), the data packet size is configured as 1 bit (bit), and the data packet is [0, 1], for example, 0 indicates 190B. 1 indicates 300B, and the modulation is adjusted to [+1, -1] by Binary Phase Shift Keying (BPSK), where -1 represents 300B and +1 represents 190B.

Optionally, according to the requested data packet size, if the configuration data packet is four types (150B, 190B, 300B, 400K), the configuration is 2 bits, and the data packets are respectively [00, 10, 11, 01] expressions. By way of example, 00 represents 150B, 10 represents 190B, 11 represents 300B, and 01 represents 400B.

Alternatively, the modulation is [+1, +j, -1, -j] by quadrature phase shift keying (QPSK).

Optionally, according to the requested data packet size, for example, three configuration packets (190B, 300B, 400B) are configured as 2 bits, for example, 00 represents a regular SR request, 10 represents 190B, and 11 represents 300B, and 01 represents 400B, which is a Semi-Persistent Scheduling Request (SPS-R) of V2X. The bit is modulated by QPSK, and each symbol sequence and orthogonal sequence defined by the UE for the SR request is format1/1a/. The 1b format is mapped to the SR resource.

(3) eNB configuration IE: Schruling RequestConfig sr-PUCCH-ResourceIndex field configures SR resources, when the UE does not have ACK/NACK feedback When, its SR resources can be used for V2X resource requests.

The eNB knows which subframes do not transmit SR and ACK/NACK at the same time. If the eNB detects that ACK/NACK and SR are significantly different in the subframe, for example, ACK/NACK and SR allocate different resources, and the SR energy is significantly higher than For ACK/NACK energy, the eNB considers that the UE sends the SR, and then receives the requested packet size, that is, whether the detected data packet is 190B or 300B, or is one of 150B, 190B, 300B, and 400B.

At this time, when the SR requests independently, the same constellation point is used for sending +1. If the demodulation is 1, the SR sent by the V2X user equipment may be a predetermined data packet or only an SR resource request, and then it is first considered to be V2X. The resource request carries the V2X packet information and is scheduled according to the periodic service. The V2X user equipment sends the V2X periodic service or the BSR resource request according to the service requirement in the scheduling resource. If the resource configured by the eNB for the first time is not the BSR information, The service is considered to be a V2X periodic service, and the resource is allocated to the V2X request to end the periodic scheduling. Otherwise, the resource requested by the BSR allocates the requested resource to the V2X for the aperiodic scheduling process.

If the packet pre-configuration contains only 300B, or 10 represents 190B, 11 represents 300B, and 01 represents 400B. If the parsed SR is 00, the base station waits for the BSR resource request, otherwise the V2X user equipment resources are configured according to the parsed packet size period.

(4) The eNB configures the V2X resource according to the detected packet size, and configures the V2X resource information for each V2X user equipment through the downlink control channel according to the V2X service requirement. The content of the V2X resource configuration information includes but is not limited to the following content.

Manner 1: The independent V2X control resource pool and the V2X data resource pool, that is, the control resource and the data resource time division multiplexing (TDM), the resource configuration information includes at least:

Control channel location indication information: may be a control channel index of the V2X control resource pool, or a time domain resource indication and a frequency domain index;

Data channel location indication information: may be a data channel index of a V2X data resource pool, or a time domain resource index and a frequency domain index and a packet type indication;

The relationship between the control channel and the data channel is as shown in FIG. 5(a).

In FIG. 5(a), the dispatching assignment (SA) information of the vehicle is time-divisional and has a corresponding relationship with the data packet transmitted. In FIG. 5(b), the SA information of the vehicle and its transmitted data packet are frequency-divided and have a corresponding relationship. For example, the V2X data packet is typically two types of 190B and 300B. If the Demodulation Reference Signal (DMRS) occupies 4 symbols, the 190B data occupies 16 PRB, and the system frequency bandwidth is 100 RB according to the frequency. The resource number of the configuration 190B is 6 indexes. If the data is occupied by 26 PRBs, the resource sequence number is 3 indexes, that is, different data packets are configured according to different pre-configured subframes, for example, parity partition, sub- Frame 0 only contains 190B data packets, and subframe 1 contains 300B data packets. Here only need to indicate the frequency domain index and time domain index of the data packet, or configure the frequency domain resources according to the minimum resource size, and divide the frequency according to the 190B data packet. The domain resource index is selected to occupy two small resource blocks at a time through a large data block. For example,

resource

0, 1 is occupied by a 300B user, indicating data frequency domain index 0 and data packet type 1, and

resource block

0, 1 is allocated to the user. .

The resource configuration information further includes: scheduling period indication information.

If the scheduling period is consistent with the V2X resource period, there is no scheduling period indication, and the period is a V2X resource scheduling period, and the control resources and data resources are fixedly used in each period;

If the scheduling period is a fixed period, there is no scheduling period indication, and the period of the periodic service of the V2X is pre-configured by the base station, for example, 100 ms;

If there is no fixed period and V2X resource scheduling period, the eNB can configure its repetition period. For example, based on the 100ms period, set the forward or reverse bias parameters, such as 4bit, 1bit indicates forward or reverse, and the remaining 3bit indicators are relative. Periodic sub-frame offset;

Or, the scheduling period is divided into two categories, indicated by 1 bit, 0 means 20 ms, and 1 means 100 ms;

When there is a corresponding control channel SA in the data scheduling period, the control information is sent at the corresponding control channel position. If there is no control channel, the data packet information is only transmitted at the corresponding location.

For example, if the subframe number 0 of the Nth radio frame is allocated to the user 1, and 100 ms is configured according to the scheduling period, the first subframe 0 after 10 radio frames continues to be allocated to the user 1.

Manner 2: The V2X control resource pool and the V2X data resource pool are in the same subframe.

The V2X user equipment can be allocated to different subframes, indicating the location of the frequency domain, the time domain subframe number, and the data packet. Size number.

The relationship between the control channel and the data channel is as shown in FIG. 5(b).

Wherein, when the control channel is adjacent to the frequency domain of the data channel, there may be no location indication of the data channel, an index of the control channel, or a frequency domain start position of the control channel.

Alternatively, the frequency domain resource is configured according to the minimum resource size, and the large data block selects to occupy two small resource blocks at a time, for example,

resource

0, 1 is occupied by one 300B user, only control channel 0, and control channel 1 is occupied by data.

The above two methods have no correspondence between the control channel and the data channel. When there is a one-to-one correspondence between the control channel and the sequence number of the data channel, it indicates that the corresponding control channel can indicate the corresponding data channel without additional overhead.

(5) The V2X user equipment receives the resource configuration information of the base station, and periodically sends the V2X control information and the data information according to the resource indicated by the scheduling.

The control information of the V2X is used to indicate the data information, and is classified into the following cases according to the relative relationship between the V2X control channel and the data channel.

Manner 1: The independent V2X control resource pool and the V2X data resource pool, that is, the control resource and the data resource TDM mode, the control information includes:

An index of the data channel or a subframe indication and a frequency domain index, wherein the subframe indicates an offset that can be N subframes relative to the offset control channel;

Scheduling period: If the scheduling period is consistent with the V2X resource period, there is no scheduling period indication, and the period is V2X resource scheduling period, and each period uses fixed control resources and data resources; if the scheduling period is a fixed period, there is no scheduling period. Instructing, by the base station, the period of the periodic service of the V2X, for example, 100 ms; if there is no fixed period and the V2X resource scheduling period, indicating the relative positional relationship of the retransmission by the scheduling period; or, scheduling the scheduling period There are two types, indicated by 1 bit, 0 means 20ms, and 1 means 100ms.

When there is a corresponding control channel SA in the data scheduling period, the control information is sent at the corresponding control channel position. If there is no control channel, the data packet information is only transmitted at the corresponding location. If there is a control channel between two data packets, the data information is also sent on the latest control channel SA before the next data packet transmission.

When the control channel is adjacent to the frequency domain of the data channel, the control information includes at least: a scheduling period and a resource size configuration parameter.

When the control channel is not adjacent to the frequency domain of the data channel, the control information includes at least: a frequency domain index of the data channel or a frequency domain offset of the control channel, a scheduling period, and a resource size configuration parameter.

(6) When the V2X user equipment environment changes, such as turning and high-speed during operation, the V2X user equipment will need to terminate the periodic transmission of information, then send end-SPS information to the base station, and the base station will release its periodically allocated resources. Can be used for resource scheduling of other user equipment.

Embodiment 2

In this embodiment, the UE performs a V2X resource request by using the SPS-R resource allocated by the base station.

The SPS-R resource is a time division manner with the SR resource, and is configured by the V2X user equipment through the IE. The SPS-R resource period and the resource location are configured by the base station, and the SPS-R can also be configured in the dedicated V2X resource pool.

In order to improve the user reusability of SPS-R resources, for a normal cyclic prefix, there are 7 single-carrier frequency-division multiple access (SC-FDMA) symbols per slot. Each SC-FDMA symbol will occur as a sequence of 12 (corresponding to 12 subcarriers of a resource block (RB)), which is cyclically shifted by a cell-specific frequency domain sequence of length 12. Bit obtained (one RB supports up to 12 cyclic shifts in the frequency domain), three SC-FDMA symbols in one uplink resource are used to transmit DMRS, and the remaining 4 SC-FDMA symbols are used to transmit PUCCH format1/1a/ 1b. In order to increase the number of UEs of the multiplexable PUCCH format1/1a/1b of each RB, in the time domain, the modulation symbol is multiplied by an orthogonal sequence of length 4, wherein An orthogonal sequence is used for the DMRS to perform channel estimation for a particular user equipment. That is to say, for LTE, a maximum of 3*12=36 V2X user equipments are allowed to be multiplexed on the same resource under the normal cyclic prefix, and the PUCCH format 1/1a/1b format is adopted.

Table 1 PUCCH format1/1a/1b for V2X

The V2X user equipment in the link state sends an SPS-R to the base station in the allocated V2X resource pool, and the eNB configures a dedicated SPS-R resource for each V2X user equipment, because the SPS-R resource is dedicated to the V2X user equipment, and is used by the eNB. The allocation is such that the SPS-R resource has a one-to-one correspondence with the V2X user equipment and the eNodeB knows the specific correspondence. The SPS-R resource of the V2X user equipment is configured by the eNodeB in the SPS-sr-PUCCH-ResourceIndex field of the corresponding SchedulingRequestConfig. As long as the interval of the V2X transmission is the same as the scheduling period of the V2X configuration, the configuration resource size is pre-configured or with the resource pool. Related.

Encoding SPS-R and packet size type. If the packet size is two types and configured as 1 bit, BPSK encoding is used. If the packet size is four types and configured as 2 bits, QPSK encoding is used.

Optionally, according to the requested data packet size, for example, the configuration data packet is two types (190B and 300B), and configured by 1 bit, and adjusted by BPSK, -1 represents 190B, and +1 represents 300B.

Optionally, according to the requested data packet size, for example, the configuration data packet is four (150B, 190B, 300B, 400B), configured by 2bit, adjusted by QPSK, 00 represents 150B, 10 represents 190B, and 11 represents 300B, 01. Represents 400B.

Alternatively, the modulation is [+1, +j, -1, -j] by QPSK adjustment.

Optionally, according to the requested data packet size, for example, the configuration data packet is four types (150B, 190B, 300B, 400B), configured by 2bit, 00 is 150B, 10 is 190B, 11 is 300B, and 01 is 400B. For the semi-constant scheduling resource request of V2X, the bit maps each symbol sequence and orthogonal sequence defined by the UE for the SR request to the SPS-R resource in the format1/1a/1b format by QPSK modulation.

The eNB detects the decoded SPS-R resource information, and learns the resource size requested by the V2X user equipment. The V2X resource information is configured for each V2X user equipment of the application resource through the downlink control channel. The content of the V2X resource configuration information includes but is not limited to the following content.

Manner 1: The independent V2X control resource pool and the V2X data resource pool, that is, the control resource and the data resource TDM mode. The configuration parameters include at least:

Control channel location indication information: may be a control channel index of a V2X control resource pool, or a subframe indication and a frequency domain indication;

Data channel location indication information: may be a data channel index of a V2X data resource pool, or a subframe indication and a frequency domain index;

For example, the V2X data packet is typically two types of 190B and 300B. If the DMRS occupies 4 symbols, the 190B data occupies 16 PRB, the frequency is configured from low to high, the system bandwidth is 100 RB, and the 190B resource serial number is 6 indexes. Index), if 300B, the data occupies 26PRB, the resource serial number is 3 indexes (index), or the frequency domain resources are divided according to the minimum resource size granularity, and the large data block selects to occupy two small resource blocks at a time, such as resource 0. 1 is occupied by a 300B user; the type of data packet is indicated in the message.

The data time domain subframe may be offset from the PDCCH by a subframe offset of N subframes or by an offset of N subframes relative to the V2X control channel, such as a fixed offset (this field may be omitted).

If there is no fixed period and pre-configured V2X resource scheduling period, the eNB can configure its repetition period. For example, set the forward or reverse offset parameters based on the 100ms period, for example, 4bit, 1bit indicates forward or reverse. Towards, the remaining 3 bits indicate the frame offset of the relative period, or the repetition period is indicated by 4 bits. As shown in Table 2, of course, the number of bits can be indicated. For example, only 3 bits are used to indicate 20ms, 40ms, 80ms, 100ms, 120ms, 140ms, 180ms, 200ms, or 2ms to indicate 20ms, 50ms, 100ms, 200ms. .

Table 2 Correspondence between information bits and indication period

信息比特(bit)Information bit (bit)	指示周期Indicating cycle	信息bitInformation bit	指示周期Indicating cycle
01110111	20ms20ms	00000000	20ms20ms
01100110	30ms30ms	00010001	30ms30ms
01010101	40ms40ms	00100010	40ms40ms
01000100	50ms50ms	00110011	50ms50ms
00110011	60ms60ms	01000100	60ms60ms
00100010	70ms70ms	01010101	70ms70ms
00010001	80ms80ms	01100110	80ms80ms
00000000	100ms100ms	01110111	90ms90ms
10001000	110ms110ms	10001000	100ms100ms
10011001	120ms120ms	10011001	110ms110ms
10101010	130ms130ms	10101010	120ms120ms
10111011	140ms140ms	10111011	130ms130ms
11001100	150ms150ms	11001100	140ms140ms
11011101	160ms160ms	11011101	150ms150ms

11101110	170ms170ms	11101110	160ms160ms
11111111	180ms180ms	11111111	170ms170ms

Alternatively, the scheduling period is divided into two categories, indicated by 1 bit, 0 for 20 ms, and 1 for 100 ms.

Since the size of the V2X packet is several fixed types, in order to ensure the mutual listening of the V2X user equipment, the V2X users with similar positions can be allocated in different subframes, indicating the location of the frequency domain, the sequence number of the time domain subframe, and the packet size. Serial number.

resource

0, 1 is occupied by one 300B user, the control channel is located on the control channel of resource 0, and control channel 1 is controlled by data. Occupied.

The V2X user equipment receives the resource configuration information of the base station, and periodically sends the V2X control information and the data information according to the resource indicated by the scheduling.

An index or subframe indication and a frequency domain index of the data channel, wherein the subframe indicates an offset that can be N subframes relative to the offset control channel;

Scheduling period: where the scheduling period is consistent with the V2X resource period, there is no scheduling period indication, and the period is V2X resource scheduling period, and each period uses fixed control resources and data resources; if the scheduling period is a fixed period, there is no scheduling period indication. The period of the periodic service of the V2X is pre-configured by the base station, for example, 100 ms; there is no fixed period of the system scheduled and the pre-configured V2X resource scheduling period, and the relative positional relationship of the retransmission is indicated by the scheduling period; or the scheduling period is divided into two categories. , indicated by 1 bit, 0 means 20ms, 1 means 100ms.

When the control channel is not adjacent to the frequency domain of the data channel, the control information includes at least: a scheduling period, a resource size configuration parameter, and a data resource index.

In this case, when the environment of the V2X user equipment changes, such as turning, high speed, etc. during operation, the V2X user equipment will need to terminate the periodic transmission of information, and then send end-SPS information to the base station, and the base station will release its periodic allocation. Resources, which can be used for resource scheduling of other user devices.

Embodiment 3

In this embodiment, the four orthogonal sequences allocated by the LTE to the PUCCH format 1/1a/1b are allocated to the same V2X user equipment, that is, the other user equipments that are allocated to the V2X user equipment are no longer multiplexed by the orthogonal sequence.

In order to improve the number of multiplexed users on the SR resources, the original LTE has 7 SC-FDMA symbols for each slot, and each SC-FDMA symbol will have a sequence of 12 (corresponding to 12 RBs). Subcarriers), which is obtained by cyclically shifting a frequency-specific sequence of a cell length of 12 (one RB supports up to 12 cyclic shifts in the frequency domain), and three SC- of one uplink resource The FDMA symbol is used to transmit the DMRS, and the remaining 4 SC-FDMA symbols are used to transmit the PUCCH format1/1a/1b. In order to improve each The number of UEs of the RB's reusable PUCCH format1/1a/1b. In the time domain, the modulation symbol is multiplied by an orthogonal sequence of length 4, one orthogonal sequence is used for DMRS, so as to be a specific user. Perform channel estimation. That is to say, for LTE, a maximum of 3*12=36 user equipments are allowed to generate PUCCH format1/1a/1b in the same RB under the normal cyclic prefix, and are distinguished from each other by cyclic shift and orthogonal sequence.

In order to enable the V2X user equipment to support different data packet sizes, on the PUCCH resource, the base station only configures the cyclic shift of each symbol for the user equipment, and the four orthogonal sequences are respectively used to indicate the size of the V2X data packet, that is, in the V2X. On the resource, up to 12 user equipments are allowed to be multiplexed on the same RB under the normal cyclic prefix.

FIG. 6 is a schematic diagram of a resource scheduling apparatus according to an embodiment of the present invention. As shown in FIG. 6, the resource scheduling apparatus provided in this embodiment is applied to a base station, and includes: a first receiving module, configured to receive a V2X SPS-R sent by a V2X user equipment on a predetermined resource; and a scheduling module, configured to be The V2X SPS-R learns the data packet size requested by the V2X user equipment, and schedules the V2X resource for the V2X user equipment according to the requested data packet size.

Optionally, the apparatus further includes a configuration module configured to configure the predetermined resource by using RRC signaling.

Optionally, the configuration module is specifically set as:

Configuring SR resources by using RRC signaling, where the predetermined resources are SR resources without feedback of uplink acknowledgement information; or

V2X SPS-R resources dedicated to V2X SPS-R are configured through RRC signaling.

Optionally, the first receiving module is specifically configured to:

When the base station detects that the SR energy is higher than the uplink acknowledgment information energy, and the subframe where the SR is located does not feed back the uplink acknowledgment information, it is notified that the V2X SPS-R sent by the V2X user equipment on the SR resource is received; or

When the base station detects that the SPS-R energy is higher than the SR energy, it is notified that the V2X SPS-R sent by the V2X user equipment on the V2X SPS-R resource is received.

Optionally, the scheduling module is configured to learn, according to the V2X SPS-R, the data packet size requested by the V2X user equipment, where the scheduling module decodes the resource information of the V2X SPS-R, and learns the V2X user equipment. The requested packet size, wherein the packet size requested by the V2X user equipment is modulated on a resource that sends the V2X SPS-R.

Optionally, the data packet size requested by the V2X user equipment is modulated by BPSK or QPSK on the resource that sends the V2X SPS-R.

Optionally, the scheduling module is configured to schedule the V2X resource for the V2X user equipment according to the requested data packet size, where the scheduling module configures the DCI according to the data packet size requested by the V2X user equipment. Resource configuration information of the SPS of the V2X user equipment.

Control channel position indication information;

Data channel location indication information;

A fixed offset or offset between the data channel and the control channel.

Optionally, the scheduling module is further configured to: when receiving the periodic broadcast termination request sent by the V2X user equipment, terminate the periodic resource allocation for the V2X user equipment.

FIG. 7 is another schematic diagram of a resource scheduling apparatus according to an embodiment of the present invention. As shown in FIG. 7, the resource scheduling apparatus provided in this embodiment is applied to a V2X user equipment, and includes: a first sending module, configured to send a V2X SPS-R to a base station according to a requested data packet size on a predetermined resource; a receiving module, configured to receive resource configuration information of the V2X resource scheduled by the base station according to the V2X SPS-R; and a second sending module, configured to send V2X information according to the resource configuration information on a corresponding V2X resource according to a predetermined period .

Optionally, the second receiving module is further configured to learn, according to the radio resource control RRC signaling, the predetermined resource, where the predetermined resource includes a scheduling request SR that is configured by the base station by using RRC signaling without feedback of uplink acknowledgement information. Resources or dedicated V2X SPS-R resources.

Optionally, the first sending module is specifically configured to:

Transmitting the V2X SPS-R on the SR resource without the uplink acknowledgement information feedback according to the SR resource configured by the base station, and modulating the requested data packet size on the resource that sends the V2X SPS-R; or

Transmitting a V2X SPS-R on the V2X SPS-R resource configured by the base station, and modulating the requested data packet size on a resource that sends the V2X SPS-R.

Optionally, the first sending module modulates the requested data packet size on the resource that sends the V2X SPS-R, that is, the first sending module modulates the requested data packet size by BPSK or QPSK. Send the V2X SPS-R resource.

Optionally, the foregoing apparatus further includes: a third sending module, configured to send a periodic broadcast termination request to the base station when the operating environment of the V2X user equipment changes.

The specific processing flow of the above device is the same as that described above, and thus will not be described herein.

In a practical application, the first receiving module and the second receiving module are, for example, a wireless communication unit having a receiving function, and the scheduling module is, for example, a processor, and the first sending module and the second sending module are, for example, a wireless communication unit having a transmitting function. However, the embodiments of the present invention are not limited thereto. The functions of each of the above modules may also be implemented by a processor executing programs and/or instructions stored in a memory.

In addition, the embodiment of the present invention further provides a resource scheduling system, including: a base station and at least one V2X user equipment; the V2X user equipment, configured to send a V2X SPS-R to a base station according to a requested data packet size on a predetermined resource; The base station is configured to receive a V2X SPS-R sent by the V2X user equipment on a predetermined resource, learn, according to the V2X SPS-R, a data packet size requested by the V2X user equipment, and according to the requested data packet size. Scheduling V2X resources for the V2X user equipment; the V2X user equipment is further configured to receive resource configuration information of the V2X resources scheduled by the base station according to the V2X SPS-R, and according to the resources The source configuration information transmits V2X information on a corresponding V2X resource according to a predetermined period.

In summary, the embodiment of the present invention shortens the time for the vehicle to apply for resources, satisfies the demanding requirements of the V2X communication for delay, reduces the control signaling overhead of the base station, and satisfies the multiple use of the primary scheduling resource, and whether Termination of resource usage is determined by the V2X User Equipment based on environmental changes.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S1, the base station receives a V2X semi-constant scheduling request SPS-R sent by the vehicle to the external V2X user equipment on a predetermined resource;

S2. The base station learns the data packet size requested by the V2X user equipment according to the V2X SPS-R, and schedules the V2X resource for the V2X user equipment according to the requested data packet size.

Optionally, the storage medium is further arranged to store program code for performing the following steps:

S1: Before receiving the V2X SPS-R sent by the V2X user equipment on the predetermined resource, the base station

The base station configures a predetermined resource by radio resource control RRC signaling.

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention in essence or the contribution to the related art can be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). ), including a number of instructions to make a terminal device The method described in various embodiments of the present invention is implemented by a mobile phone, a computer, a server, or a network device.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. The present invention is not limited by the above-described embodiments, and the above-described embodiments and the description are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention. And modifications are intended to fall within the scope of the invention as claimed.

Industrial applicability

In the embodiment of the present invention, the V2X user equipment requests the semi-constant scheduling resource through the V2X SPS-R, and the base station learns the data packet size requested by the V2X user equipment according to the V2X SPS-R, and is the V2X user equipment according to the requested data packet size. The V2X user equipment periodically schedules the V2X information on the configured V2X resources. As such, the present invention shortens the resource scheduling process, shortens the time for V2X user equipment to apply for resources, satisfies the demanding requirements of V2X communication for delay, and reduces the overhead of base station control signaling.

Claims

A resource scheduling method includes:

The base station receives a V2X semi-constant scheduling request SPS-R sent by the vehicle to the external V2X user equipment on a predetermined resource;

The base station learns the data packet size requested by the V2X user equipment according to the V2X SPS-R, and schedules the V2X resource for the V2X user equipment according to the requested data packet size.
The method of claim 1, wherein the base station before receiving the V2X SPS-R sent by the V2X user equipment on the predetermined resource further comprises: the base station configuring the predetermined resource by radio resource control RRC signaling.
The method of claim 2, wherein the base station configures the predetermined resource by using RRC signaling, including:

The base station configures a scheduling request SR resource by using RRC signaling, where the predetermined resource is an SR resource without feedback of uplink acknowledgement information; or

The base station configures a V2X SPS-R resource dedicated to the V2X SPS-R through RRC signaling.
The method of claim 3, wherein the receiving, by the base station, the V2X SPS-R sent by the V2X user equipment on the predetermined resource comprises:

When the base station detects that the SR energy is higher than the uplink acknowledgment information energy, and the subframe where the SR is located does not feed back the uplink acknowledgment information, the base station learns that the V2X SPS that is sent by the V2X user equipment on the SR resource is received. R; or,

When the base station detects that the SPS-R energy is higher than the SR energy, the base station learns to receive the V2X SPS-R sent by the V2X user equipment on the V2X SPS-R resource.
The method of claim 1, wherein the base station learns the data packet size requested by the V2X user equipment according to the V2X SPS-R, including:

The base station decodes the resource information of the V2X SPS-R, and learns the data packet size requested by the V2X user equipment, where the data packet size requested by the V2X user equipment is modulated on the resource that sends the V2X SPS-R. .
The method of claim 5 wherein the packet size requested by said V2X user equipment is modulated on a resource transmitting said V2X SPS-R by binary phase shift keying BPSK or quadrature phase shift keying QPSK.
The method of claim 1, wherein the base station schedules V2X resources for the V2X user equipment according to the requested data packet size, including:

The base station configures resource configuration information of the semi-constant scheduling SPS of the V2X user equipment by using the downlink control information DCI according to the data packet size requested by the V2X user equipment.
The method of claim 7, wherein the resource configuration information comprises at least one of the following:

Control channel position indication information;

Data channel location indication information;

A fixed offset or offset between the data channel and the control channel.
The method of claim 8, wherein the resource configuration information further comprises at least one of: scheduling period indication information, resource size configuration parameters.
The method of claim 1, further comprising: the base station terminating periodic resource allocation for the V2X user equipment when receiving the periodic broadcast termination request sent by the V2X user equipment.
A resource scheduling method includes:

The vehicle sends a V2X semi-constant scheduling request SPS-R to the base station on the predetermined resource according to the requested data packet size to the external V2X user equipment;

Receiving, by the V2X user equipment, resource configuration information of the V2X resource scheduled by the base station according to the V2X SPS-R;

The V2X user equipment sends the V2X information according to the resource configuration information on the corresponding V2X resource according to a predetermined period.
The method of claim 11, wherein the V2X user equipment further comprises: the V2X before transmitting the V2X SPS-R to the base station on the predetermined resource according to the requested data packet size. The user equipment learns the predetermined resource according to the radio resource control RRC signaling, where the predetermined resource includes the scheduling request SR resource or the dedicated V2X SPS-R resource that is not configured by the base station by using the RRC signaling.
The method of claim 11, wherein the V2X user equipment transmits the V2X SPS-R to the base station on the predetermined resource according to the requested data packet size, including:

The V2X user equipment sends a V2X SPS-R on the SR resource without the uplink acknowledgement information feedback according to the SR resource configured by the base station, and modulates the requested data packet size on the resource that sends the V2X SPS-R. ;or,

The V2X user equipment sends the V2X SPS-R on a V2X SPS-R resource configured by the base station, and modulates the requested data packet size on a resource that sends the V2X SPS-R.
The method of claim 13 wherein said V2X user equipment modulates said requested data packet size on a resource for transmitting said V2X SPS-R, comprising: passing said requested data packet size through a binary phase shift key Controlled BPSK or quadrature phase shift keying QPSK modulation is on the resource that sends the V2X SPS-R.
The method of claim 11, further comprising: when the operating environment of the V2X user equipment changes, the V2X user equipment sends a periodic broadcast termination request to the base station.
The method of claim 11 wherein said V2X information comprises V2X control information and V2X data information.
The method of claim 16, wherein the V2X control information comprises at least one of: data channel location indication information, scheduling period indication information, and resource size configuration parameters.
A resource scheduling apparatus is applied to a base station, including:

The first receiving module is configured to receive a V2X semi-constant scheduling request SPS-R sent by the vehicle to the external V2X user equipment on a predetermined resource;

a scheduling module, configured to learn, according to the V2X SPS-R, the V2X user equipment request The packet size, and the V2X resource is scheduled for the V2X user equipment according to the requested packet size.
The apparatus of claim 18, further comprising: a configuration module configured to configure the predetermined resource by radio resource control RRC signaling.
The device of claim 19, wherein the configuration module is specifically configured to:

Configuring a scheduling request SR resource by using RRC signaling, where the predetermined resource is an SR resource without feedback of uplink acknowledgement information; or

V2X SPS-R resources dedicated to V2X SPS-R are configured through RRC signaling.
The device of claim 20, wherein the first receiving module is specifically configured to:

When the base station detects that the SR energy is higher than the uplink acknowledgement information energy, and the subframe where the SR is located does not feed back the uplink acknowledgement information, it is notified that the V2X SPS-R sent by the V2X user equipment on the SR resource is received; or ,

When the base station detects that the SPS-R energy is higher than the SR energy, it is notified that the V2X SPS-R sent by the V2X user equipment on the V2X SPS-R resource is received.
The apparatus according to claim 18, wherein the scheduling module is configured to learn the data packet size requested by the V2X user equipment according to the V2X SPS-R, that is, the scheduling module decodes the V2X SPS- The resource information of the R2 is obtained by the resource information requested by the V2X user equipment, where the data packet size requested by the V2X user equipment is modulated on the resource that sends the V2X SPS-R.
The apparatus of claim 18, wherein the scheduling module is configured to schedule the V2X resource for the V2X user equipment according to the requested data packet size, where the scheduling module is requested according to the V2X user equipment. The packet size is configured by the downlink control information DCI to configure resource configuration information of the semi-constant scheduling SPS of the V2X user equipment.
The apparatus according to claim 18, wherein the scheduling module is further configured to: terminate the setting for the V2X user when receiving the periodic broadcast termination request sent by the V2X user equipment Provisioning for periodic resource allocation.
A resource scheduling device is applied to a vehicle to an external V2X user equipment, including:

a first sending module, configured to send a V2X semi-constant scheduling request SPS-R to the base station on a predetermined resource according to the requested data packet size;

a second receiving module, configured to receive resource configuration information of the V2X resource scheduled by the base station according to the V2X SPS-R;

The second sending module is configured to send the V2X information according to the resource configuration information on the corresponding V2X resource according to a predetermined period.
The apparatus according to claim 25, wherein the second receiving module is further configured to learn a predetermined resource according to radio resource control RRC signaling, wherein the predetermined resource includes no uplink that is configured by the base station by using RRC signaling. The scheduling of the acknowledgement feedback requests the SR resource or the dedicated V2X SPS-R resource.
The device of claim 25, wherein the first sending module is specifically configured to:

Transmitting the V2X SPS-R on the SR resource without the uplink acknowledgement information feedback according to the SR resource configured by the base station, and modulating the requested data packet size on the resource that sends the V2X SPS-R; or

Transmitting the V2X SPS-R on the V2X SPS-R resource configured by the base station, and modulating the requested data packet size on a resource that sends the V2X SPS-R.
The apparatus of claim 25, further comprising: a third transmitting module configured to send a periodic broadcast termination request to the base station when a change in an operating environment of the V2X user equipment.
A resource scheduling system, comprising: a base station and a vehicle-to-foreign V2X user equipment; the V2X user equipment, configured to send a V2X semi-constant scheduling request SPS-R to a base station according to a requested data packet size on a predetermined resource; the base station And configured to receive the V2X SPS-R sent by the V2X user equipment on a predetermined resource, and learn the V2X user according to the V2X SPS-R. The V2X resource is scheduled by the device, and the V2X user equipment is scheduled to receive the V2X resource according to the requested data packet size. The V2X user equipment is further configured to receive the V2X resource that is scheduled by the base station according to the V2X SPS-R. The resource configuration information is sent according to the resource configuration information on the corresponding V2X resource according to a predetermined period.