WO2019028619A1

WO2019028619A1 - Data scheduling method and device, and computer storage medium

Info

Publication number: WO2019028619A1
Application number: PCT/CN2017/096285
Authority: WO
Inventors: 唐海
Original assignee: Oppo广东移动通信有限公司
Priority date: 2017-08-07
Filing date: 2017-08-07
Publication date: 2019-02-14
Also published as: CN109565811B; CN109565811A

Abstract

Disclosed in the present invention are a data scheduling method and device, and a computer storage medium. The method comprises: a terminal receives a PDCCH sent by a base station; the terminal determines resource indication information on the basis of the PDCCH, wherein the resource indication information has a corresponding relationship with a time domain position of the sTTI for transmitting data; the terminal determines, on the basis of the resource indication information, the time domain position of the sTTI used for transmitting data.

Description

Data scheduling method and device, computer storage medium

Technical field

The invention relates to the technical field of vehicle networking, in particular to a data scheduling method and device in a vehicle networking, and a computer storage medium.

Background technique

In the vehicle networking system, the vehicle-mounted terminal uses a Long Term Evaluation-Vehicle to Vehicle (SL) (Sidelink) transmission technology to transmit data. Different from the traditional LTE system, the communication data is received or transmitted by the base station. The vehicle networking system adopts the terminal-to-terminal direct communication method, so it has higher spectrum efficiency and lower transmission delay.

The Internet of Vehicles technology was standardized in the 3rd Generation Partnership Project (3GPP), and two transmission modes were defined. In the two transmission modes, the content transmitted by the in-vehicle terminal on the side line includes side link control information (SCI, Sidelink Control Information) and data.

A Short Transmission Time Interval (sTTI) is introduced in 3GPP Rel-15. Here, sTTI indicates that user data is transmitted using M orthogonal frequency division multiplexing (OFDM) symbols. Not a complete sub-frame, such as M=4, or M=7.

To be compatible with the sTTI user in the Rel-15 and the user pool in the Rel-14, the user of the Rel-15 needs to send three types of information: normal scheduling assignment information (SA, scheduling assignment), short SA, sTTI data, where SA and short SA are carried in SCI. In this case, if the scheduling information of the base station is scheduled based on the subframe, how the base station allocates resources for the terminal that performs data transmission using the sTTI is a problem to be solved.

Summary of the invention

To solve the above technical problem, an embodiment of the present invention provides a data scheduling method and apparatus, and a computer storage medium.

The data scheduling method provided by the embodiment of the present invention includes:

The terminal receives the PDCCH sent by the base station;

Determining, by the terminal, resource indication information, where the resource indication information has a corresponding relationship with a time domain location of an sTTI for transmitting data;

The terminal determines a time domain location of the sTTI used by the transmission data based on the resource indication information.

A data scheduling method provided by another embodiment of the present invention includes:

The base station allocates a transmission resource to the terminal, and determines resource indication information corresponding to the transmission resource, where the resource indication information has a corresponding relationship with a time domain location of the sTTI used for transmitting data;

The base station sends a PDCCH to the terminal based on the resource indication information, so that the terminal determines a time domain location of the sTTI used by the transmission data based on the PDCCH.

The data scheduling apparatus provided by the embodiment of the invention includes:

a receiving unit, configured to receive a PDCCH sent by the base station;

a first determining unit, configured to determine, according to the PDCCH, resource indication information, where the resource indication information has a corresponding relationship with a time domain location of an sTTI used for transmitting data;

The second determining unit is configured to determine, according to the resource indication information, a time domain location of the sTTI used by the transmission data.

A data scheduling apparatus according to another embodiment of the present invention includes:

a determining unit, configured to allocate a transmission resource to the terminal, and determine resource indication information corresponding to the transmission resource, where the resource indication information has a corresponding relationship with a time domain location of the sTTI used for transmitting data;

And a sending unit, configured to send, according to the resource indication information, a PDCCH to the terminal, so that the terminal determines, according to the PDCCH, a time domain location of the sTTI used by the transmission data.

The computer storage medium provided by the embodiment of the present invention stores computer executable instructions, and when the computer executable instructions are executed, the data scheduling method of the embodiment of the present invention is implemented.

In the technical solution of the embodiment of the present invention, the terminal receives the PDCCH sent by the base station, and the terminal determines the resource indication information based on the PDCCH, where the resource indication information is in a time domain of a short transmission time interval sTTI for transmitting data. The location has a corresponding relationship; the terminal determines a time domain location of the sTTI used for transmitting the data based on the resource indication information. With the technical solution of the embodiment of the present invention, the DCI carried in the PDCCH is used to allocate transmission resources to terminals using sTTI to transmit data, or the PDCCH search space is used to allocate transmission resources to terminals using sTTI to transmit data.

DRAWINGS

1 is a scene diagram of a transmission mode 3 of an in-vehicle terminal according to an embodiment of the present invention;

2 is a scene diagram of a transmission mode 4 of an in-vehicle terminal according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the sTTI occupying one time slot for data transmission according to the embodiment; FIG.

4 is a schematic flowchart 1 of a data scheduling method according to an embodiment of the present invention;

FIG. 5 is a structural diagram of a subframe according to an embodiment of the present invention;

6 is a second schematic flowchart of a data scheduling method according to an embodiment of the present invention;

FIG. 7 is a first schematic structural diagram of a data scheduling apparatus according to an embodiment of the present invention; FIG.

FIG. 8 is a second schematic structural diagram of a data scheduling apparatus according to an embodiment of the present invention; FIG.

FIG. 9 is a structural diagram of a terminal according to an embodiment of the present invention; FIG.

FIG. 10 is a structural diagram of a base station according to an embodiment of the present invention.

Detailed ways

In order to understand the features and technical contents of the embodiments of the present invention in more detail, the following combination The drawings illustrate the implementation of the embodiments of the present invention, and the accompanying drawings are for the purpose of illustration only.

The following is an explanation of key terms related to the embodiments of the present invention:

LTE: Long Term Evaluation, Long Term Evolution

V2V: Vehicle to Vehicle, vehicle to vehicle

V2X: Vehicle to Everything, vehicles to other equipment

D2D: Device to Device, terminal to terminal

SA: Scheduling Assignment, scheduling allocation

DCI: Downlink Control Information, downlink control information

SCI: Sidelink Control Information, sidelink control information

SFBC: Space Frequency Block Code, space frequency block code

STBC: Space Time Block Code, space time block code

CDD: Cyclic Delay Diversity, cyclic delay diversity

DMRS: Demodulation Reference Signal, demodulation reference signal

sTTI: short Transmission Time Interval, short transmission time interval

PDCCH: Physical Downlink Control Channel, downlink control channel

The car networking technology is standardized in 3GPP Rel-14, and two transmission modes are defined, namely: mode 3 and mode 4. among them,

For mode 3: the transmission resource of the in-vehicle terminal is allocated by a base station (such as an evolved Node B (eNB)). As shown in FIG. 1 , the in-vehicle terminal performs data on the side line according to resources allocated by the base station. The base station may allocate a single transmission resource to the terminal, or allocate a semi-static transmission resource to the terminal.

In mode 3, the base station allocates resources for the in-vehicle terminal through the DCI, and if the terminal receives the DCI in the subframe n, the first available sub-frame after n+4 performs data transmission. In Rel-14, the base station allocates V2X transmission resources to the terminal by using DCI format 5A.

For mode 4: the in-vehicle terminal adopts a transmission mode of sensing + reservation. As shown in FIG. 2, the in-vehicle terminal acquires an available transmission resource set in a resource pool by means of interception, and the terminal randomly selects one resource from the transmission resource set to transmit data. Since the service in the car network system has periodic characteristics, the terminal usually adopts a semi-static transmission mode, that is, after the terminal selects one transmission resource, the terminal continuously uses the resource in multiple transmission cycles, thereby reducing resource reselection and The probability of a resource conflict. The terminal carries the information of the next transmission resource in the SCI of the current transmission, so that the other terminal can determine whether the resource is reserved and used by the user by detecting the SCI of the user, so as to reduce the resource conflict.

In the vehicle networking system, the content transmitted by the vehicle terminal on the side line is SCI+ data, wherein the SCI carries control information corresponding to data transmission, such as Modulation and Coding Scheme (MCS), time-frequency. The resource allocation information, the resource reservation information, and the like, the receiving terminal obtains the time-frequency resource location of the data and the reservation information by detecting the SCI, thereby determining which resources are available and which resources are unavailable. If the in-vehicle terminal cannot successfully detect the SCI, the energy on each transmission resource can be measured, and all the transmission resources are sorted according to the energy level, and the resources with low energy are preferentially selected for use.

The sTTI is introduced in Rel-15, and the sTTI indicates that the user's data is transmitted using M OFDM symbols instead of a complete subframe, for example, M=4; M=7. The user of the sTTI of the Rel-15 and the user of the Rel-14 are required to share the resource pool. The Rel-14 user resource detection and selection process cannot be affected. Therefore, the user of the Rel-14 can detect the Rel-15. The user's SCI learns the resource usage of Rel-15, thereby listening and selecting resources. This forces the user of Rel-15 to send a Rel-14-compatible SCI. Here, the Rel-14-compatible SCI in Rel-15 is called a normal SA, and in order to reduce the Rel-15 delay, Rel- The user of 15 also needs to send short control information, here short control information is called short SA (sSA, short SA). The terminal of the Rel-15 can detect the corresponding control information of the data by detecting the sSA, and perform data detection according to this, without waiting for the end of one subframe (ie, 1 ms) to detect the normal SA, so Can reduce the delay. The terminal of the Rel-14 learns the normal SA to detect the resource occupancy of the user of the Rel-15, thereby performing interception and selection. Therefore, users of Rel-15 need to send three kinds of information: normal SA, short SA, sTTI data. FIG. 3 is a schematic diagram of the sTTI occupying one time slot for data transmission according to the embodiment. As shown in FIG. 3, the sTTI occupies one time slot, that is, the sTTI occupies 7 OFDM symbols, and the terminal needs to send three types of information: normal SA, Short SA, sTTI data.

As shown in FIG. 3, the sTTI can occupy the first time slot of the subframe or the second time slot. If the scheduling information of the base station (carrying in the DCI) is scheduled based on the subframe, how does the base station utilize the DCI? Allocating resources for a terminal that uses sTTI to transmit data is a problem that the embodiment of the present invention aims to solve.

FIG. 4 is a schematic flowchart of a data scheduling method according to an embodiment of the present invention. The data scheduling method in this example is applied to a terminal side. As shown in FIG. 4, the data scheduling method includes the following steps:

Step 401: The terminal receives the PDCCH sent by the base station.

In the embodiment of the present invention, the terminal receives the PDCCH sent by the base station, where the terminal may be implemented in various forms. For example, the terminal described in the embodiments of the present invention may include, for example, an in-vehicle device, a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a personal digital assistant (PDA), and a portable media player (PMP). Mobile devices such as navigation devices, wearable devices, smart bracelets, and pedometers. The base station can be implemented in various forms. For example, the base station described in the embodiments of the present invention may include an eNB, and a base station device in a future 5G system.

In the embodiment of the present invention, the PDCCH refers to a downlink control channel that is sent by the base station to the terminal, and carries the DCI in the PDCCH. The DCI includes uplink and downlink resource allocation information, hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat reQuest) information, and power control. Information, etc.

Step 402: The terminal determines resource indication information based on the PDCCH, where the resource indication information has a corresponding relationship with a time domain location of an sTTI used for transmitting data.

In the embodiment of the present invention, the resource indication information can be implemented in the following three manners:

Manner 1: The resource indication information is characterized by N bits in the DCI carried in the PDCCH, where N is a positive integer, where different bit information corresponds to different time domain positions of the sTTI.

Based on the PDCCH, the terminal determines the resource indication information, specifically: the terminal detects the PDCCH, and obtains, according to the detection result, the N bits in the DCI carried in the PDCCH. The information of the N bits is used as the resource indication information.

Manner 2: The resource indication information is characterized by a mask carried by the PDCCH, where different masks correspond to time domain locations of different sTTIs.

Based on the PDCCH, the terminal determines the resource indication information, where the terminal detects the PDCCH, and based on the detection result, obtains a mask carried in the PDCCH, and uses the mask as a Resource indication information.

Here, based on the bit information of the DCI and the bit information of the cyclic redundancy check, a first bit sequence is obtained; and the DCI scrambled code is added based on the first bit sequence, the scrambling code sequence, and the mask sequence. The sequence after scrambling code processing.

Manner 3: The resource indication information is characterized by a search space of the PDCCH, where different search spaces correspond to time domain locations of different sTTIs.

Based on this, the terminal determines the resource indication information based on the PDCCH, where the terminal determines the search space of the PDCCH, and uses the search space of the PDCCH as the resource indication information.

Here, the search space includes: a terminal-specific search space, a common search space, wherein the terminal-specific search space or the common search space can be further divided into a plurality of sub-spaces.

The different search spaces mean:

The terminal-specific search space and the common search space belong to different search spaces; or,

Different subspaces in the terminal-specific search space belong to different search spaces; or

Different subspaces in the common search space belong to different search spaces.

In the foregoing solution of the embodiment of the present invention, the subframe includes M1 time slots, where each time slot represents one sTTI, and correspondingly, the time domain position of the sTTI is represented by a corresponding time slot sequence number, and M1 is a positive integer; Or, the subframe includes M2 sTTIs, and the kth sTTIs in the M2 sTTIs include Lk OFDM symbols, and correspondingly, the time domain positions of the sTTIs are represented by corresponding sTTI numbers, where M2, k, Lk It is a positive integer, 1 ≤ k ≤ M2, and 1 ≤ Lk ≤ 14.

Step 403: The terminal determines, according to the resource indication information, a time domain location of the sTTI used by the transmission data.

The technical solutions of the embodiments of the present invention are further described below in conjunction with specific application scenarios.

Application scenario 1

A specific bit in the DCI is used to describe the resource indication information. Specifically, the N bits in the DCI are used to characterize the location of the sTTI used for transmitting the data, that is, the time domain resource of the sTTI.

For example, N=1, for the slot-based sTTI, the 1-bit information is used in the DCI to indicate whether the DCI is scheduling the first time slot or the second time slot in the subframe, as shown in Table 1 below:

资源指示信息(1比特)Resource indication information (1 bit)	子帧中sTTI的位置The position of the sTTI in the sub-frame
00	第一个时隙 First time slot
11	第二个时隙Second time slot

Table 1

If the resource indication information is 0, it indicates that the location of the sTTI is the first time slot in the subframe, and if the resource indication information is 1, it indicates that the location of the sTTI is the second time slot in the subframe.

For example, N=2, one subframe includes 4 sTTIs (as shown in FIG. 5), and 2-bit information is used in the DCI to indicate which sTTI in the subframe is scheduled by the DCI, as shown in Table 2 below:

资源指示信息(2比特)Resource indication information (2 bits)	子帧中sTTI的位置The position of the sTTI in the sub-frame
0000	sTTI 0sTTI 0

0101	sTTI 1 sTTI 1
1010	sTTI 2 sTTI 2
1111	sTTI 3 sTTI 3

Table 2

If the resource indication information is 00, the location of the sTTI is sTTI 0 in the subframe, and if the resource indication information is 01, the location of the sTTI is sTTI 1 in the subframe, and if the resource indication information is 10, Indicates that the location of the sTTI is sTTI 2 in the subframe. If the resource indication information is 11, it indicates that the location of the sTTI is sTTI 3 in the subframe.

Application scenario 2

The location of the sTTI used for transmitting data is characterized by different masks. Specifically, the DCI information is subjected to Cyclic Redundancy Check (CRC) information, and then the radio network temporary identifier (RNTI, Radio Network Tempory Identity) is used. Sequence scrambling and mask processing by mask sequence to obtain DCI information processed by scrambling and masking. It is indicated by a different mask which sTTI in the subframe is scheduled by the DCI.

For example, based on the slot-based sTTI, the mask shown in Table 3 below is used to indicate that the DCI is scheduling the first time slots in the subframe:

table 3

For example, if a subframe includes 4 sTTIs, the mask shown in Table 4 below can be used to indicate that the DCI is scheduling the first sTTIs in the subframe:

Table 4

It should be noted that the specific mask sequence is not limited in this embodiment, and other mask sequences may be used to distinguish different time slots.

In the above solution, the processing of the DCI information may adopt the following processing:

1) The bit information of the DCI is expressed as: a ₀ , a ₁ , a ₂ , a ₃ , ..., a _A-1 , and the bit information of the CRC check is p ₀ , p ₁ , p ₂ , p ₃ ,. .., p _L-1 , where A represents the bit length of the information and L represents the check bit length. The CRC-added bit sequence (ie, the first bit sequence) is represented as b ₀ , b ₁ , b ₂ , b ₃ , . . . , b _B-1 , where B=A+L, specifically:

k = 0, 1, 2, ..., A-1, b _k = a _k

k=A, A+1, A+2,..., A+L-1, b _k =p _kA

2) scrambling and adding a masking process to the bit sequence after the CRC is added. In this embodiment, the scrambling code sequence is determined by the corresponding RNTI, that is, x _{rnti, 0} , x _{rnti, 1} , ..., x _rnti Determined by ₁₅ , the mask sequence is x _mask , and the sequence after scrambling and masking is c ₀ , c ₁ , c ₂ , c ₃ , ..., c _B-1 , wherein

k = 0, 1, 2, ..., A-1, c _k = b _k

k=A, A+1, A+2,..., A+15, c _k =(b _k +x _rnti,kA +x _mask,kA )mod2

Application scenario three

The location of the sTTI used to transmit the data is characterized by different search spaces of the PDCCH. Here, the search space is divided into a UE-specific search space and a common search space. The base station may indicate that the PDCCH is scheduled to be the sTTI in the subframe by using a manner of transmitting the PDCCH in different search spaces. The terminal may also determine, by using a search space where the PDCCH is located, the PDCCH scheduling is the first of the subframes. sTTI.

For example, the slot-based sTTI may indicate the first sTTI in the scheduling subframe by transmitting the PDCCH in the dedicated search space, and send the PDCCH in the common search space to indicate the second sTTI in the scheduling subframe, as shown in the following table. 5 shows:

	子帧中sTTI的位置The position of the sTTI in the sub-frame
专有搜索空间Proprietary search space	第一个时隙First time slot
公共搜索空间Public search space	第二个时隙Second time slot

table 5

For example, one subframe includes four sTTIs, and the common search space or the terminal-specific search space may be divided into four sub-spaces, wherein the PDCCH transmitted in the k-th sub-space indicates the k-th sTTI in the scheduling subframe, k =1, 2, 3, 4, as shown in Table 6 below:

	子帧中sTTI的位置The position of the sTTI in the sub-frame
子空间0Subspace 0	sTTI 0sTTI 0
子空间1 Subspace 1	sTTI 1 sTTI 1
子空间2 Subspace 2	sTTI 2 sTTI 2
子空间3 Subspace 3	sTTI 3 sTTI 3

Table 6

The foregoing solution of the embodiment of the present invention is described by taking one subframe including two or four sTTIs as an example. Those skilled in the art should understand that other numbers of sTTIs may be included in the subframe.

FIG. 6 is a schematic flowchart of a data scheduling method according to an embodiment of the present invention. The data scheduling method in this example is applied to a base station side. As shown in FIG. 6, the data scheduling method includes the following steps:

Step 601: The base station allocates a transmission resource to the terminal, and determines resource indication information corresponding to the transmission resource, where the resource indication information has a corresponding relationship with a time domain location of the sTTI used for transmitting data.

In the embodiment of the present invention, the base station first allocates transmission resources to the terminal, that is, the base station first determines a time domain location of the sTTI for transmitting data, and then determining resource indication information corresponding to the transmission resource.

In an embodiment, the subframe includes M1 slots, wherein each slot represents one sTTI, and correspondingly, the time domain position of the sTTI is represented by a corresponding slot sequence number, and M1 is a positive integer.

In another embodiment, the subframe includes M2 sTTIs, and the kth sTTI of the M2 sTTIs includes Lk OFDM symbols, and correspondingly, the time domain position of the sTTI is represented by a corresponding sTTI sequence number, where M2, k, Lk are positive integers, 1 ≤ k ≤ M2, and 1 ≤ Lk ≤ 14.

Step 602: The base station sends a PDCCH to the terminal according to the resource indication information, so that the terminal determines, according to the PDCCH, a time domain location of the sTTI used by the transmission data.

Correspondingly, the base station sets the resource indication information by using N bits in the DCI; the base station sends the PDCCH carrying the DCI to the terminal.

Here, based on the bit information of the DCI and the bit information of the cyclic redundancy check, a first bit sequence is obtained; and the DCI scrambled code is added based on the first bit sequence, the scrambling code sequence, and the mask sequence. Masked sequence.

Correspondingly, the base station sets a mask indicating the resource indication information in the PDCCH; the base station sends the PDCCH carrying the mask to the terminal.

Correspondingly, the base station transmits the PDCCH to the terminal in the selected search space.

Here, different search spaces mean:

FIG. 7 is a schematic structural diagram of a data scheduling apparatus according to an embodiment of the present invention. The data scheduling apparatus in this example is applied to a terminal side. As shown in FIG. 7, the apparatus includes:

The receiving unit 701 is configured to receive a PDCCH sent by the base station;

The first determining unit 702 is configured to determine, according to the PDCCH, resource indication information, where the resource indication information has a corresponding relationship with a time domain location of an sTTI used for transmitting data;

The second determining unit 703 is configured to determine, according to the resource indication information, a time domain location of the sTTI used by the transmission data.

In the embodiment of the present invention, the resource indication information is characterized by N bits in the downlink control information DCI carried in the PDCCH, where N is a positive integer, where different bit information corresponds to different sTTIs. Time domain location.

The first determining unit 702 is configured to: detect the PDCCH, and obtain information about the N bits in the DCI carried in the PDCCH based on the detection result, where the N bits are The bit information is used as the resource indication information.

In the embodiment of the present invention, the resource indication information is characterized by a mask carried by the PDCCH, where different masks correspond to time domain locations of different sTTIs.

The first determining unit 702 is specifically configured to: detect the PDCCH, obtain a mask carried in the PDCCH according to the detection result, and use the mask as the resource indication information.

In the embodiment of the present invention, the resource indication information is characterized by a search space of the PDCCH, where different search spaces correspond to time domain locations of different sTTIs.

The first determining unit 702 is specifically configured to: determine a search space of the PDCCH, and use a search space of the PDCCH as the resource indication information.

Here, the different search spaces mean:

Those skilled in the art will appreciate that the implementation functions of the various units in the apparatus shown in FIG. 7 can be understood with reference to the related description of the foregoing methods. The functions of the units in the apparatus shown in Fig. 7 can be realized by a program running on a processor, or can be realized by a specific logic circuit.

FIG. 8 is a schematic structural diagram of a data scheduling apparatus according to an embodiment of the present invention. The data scheduling apparatus in this example is applied to a base station side. As shown in FIG. 8, the apparatus includes:

The determining unit 801 is configured to allocate a transmission resource to the terminal, and determine resource indication information corresponding to the transmission resource, where the resource indication information has a corresponding relationship with a time domain location of the sTTI used for transmitting data;

The sending unit 802 is configured to send a PDCCH to the terminal based on the resource indication information, so that the terminal determines, according to the PDCCH, a time domain location of the sTTI used by the transmission data.

In the embodiment of the present invention, the resource indication information is represented by N bits in the DCI carried in the PDCCH, where N is a positive integer, where different bit information corresponds to different The time domain location of the sTTI.

The apparatus further includes: a processing unit (not shown) configured to set the resource indication information by N bits in the DCI;

The sending unit 802 is specifically configured to: send a PDCCH that carries the DCI to the terminal.

In the embodiment of the present invention, the resource indication information is represented by a mask carried by the PDCCH, where different masks correspond to time domain locations of different sTTIs.

The processing unit is configured to set, in the PDCCH, a mask that represents the resource indication information;

The sending unit 802 is specifically configured to: send a PDCCH carrying the mask to the terminal.

The processing unit is further configured to obtain a first bit sequence based on bit information of the DCI and bit information of a cyclic redundancy check; and obtain the foregoing according to the first bit sequence, the scrambling code sequence, and the mask sequence The DCI is scrambled and masked.

The sending unit 802 is specifically configured to: send the PDCCH to the terminal in the selected search space.

Here, the different search spaces mean:

In the embodiment of the present invention, the subframe includes M1 time slots, where each time slot represents one sTTI, and correspondingly, the time domain position of the sTTI is represented by a corresponding time slot sequence number, and M1 is a positive integer; or, The frame includes M2 sTTIs, and the kth sTTI among the M2 sTTIs Including Lk OFDM symbols, correspondingly, the time domain position of the sTTI is characterized by a corresponding sTTI sequence number, where M2, k, Lk are positive integers, 1≤k≤M2, 1≤Lk≤14.

It will be understood by those skilled in the art that the implementation functions of the units in the apparatus shown in FIG. 8 can be understood by referring to the related description of the foregoing methods. The functions of the units in the apparatus shown in FIG. 8 can be implemented by a program running on a processor, or can be realized by a specific logic circuit.

The embodiment of the present invention further provides a terminal. As shown in FIG. 9, the terminal includes: at least one processor 901, a memory 902, at least one network interface 904, and a user interface 903. The various components in the terminal are coupled together by a bus system 905. It will be appreciated that the bus system 905 is used to implement connection communication between these components. The bus system 905 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 905 in FIG.

The user interface 903 may include a display, a keyboard, a button, or a pointing device, such as a mouse, a trackball, a touchpad, or a touch screen.

It is to be understood that the memory 902 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.

In some implementations, the memory 902 stores elements, executable modules or data structures, or a subset thereof, or their extension set:

Operating system 9021 and application 9022.

In the embodiment of the present invention, the processor 901 is configured to: receive a PDCCH sent by a base station; and determine resource indication information based on the PDCCH, where the resource indication information and a time domain location of an sTTI used for transmitting data have Corresponding relationship; determining a time domain location of the sTTI used for transmitting the data based on the resource indication information.

The embodiment of the present invention further provides a base station. As shown in FIG. 10, the base station includes: at least one processor 1001, a memory 1002, and at least one network interface 1003. The various components in the base station are coupled together by a bus system 1004. It can be understood that the bus system 1004 is used to implement these groups. Connection communication between pieces. In addition to the data bus, bus system 84 includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1004 in FIG.

It is to be understood that the memory 1002 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.

In some implementations, the memory 1002 stores elements, executable modules or data structures, or a subset thereof, or their extension set:

Operating system 10021 and application 10022.

The processor 1001 is configured to allocate a transmission resource to the terminal, and determine resource indication information corresponding to the transmission resource, where the resource indication information has a correspondence relationship with a time domain location of the sTTI used for transmitting data. Transmitting a PDCCH to the terminal based on the resource indication information, so that the terminal determines a time domain location of the sTTI used by the transmission data based on the PDCCH.

Embodiments of the Invention The above apparatus may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present invention further provides a computer storage medium, wherein a computer program is configured, and the computer program is configured to execute a data scheduling method according to an embodiment of the present invention.

Although preferred embodiments of the invention have been disclosed for illustrative purposes, those skilled in the art It will be appreciated that various modifications, additions and substitutions are also possible, and thus the scope of the invention should not be limited to the embodiments described above.

Claims

A data scheduling method, the method comprising:

Receiving, by the terminal, a downlink control channel PDCCH sent by the base station;

Determining, by the terminal, resource indication information, where the resource indication information has a corresponding relationship with a time domain location of a short transmission time interval sTTI for transmitting data;

The terminal determines a time domain location of the sTTI used by the transmission data based on the resource indication information.
The data scheduling method according to claim 1, wherein the resource indication information is characterized by N bits in downlink control information DCI carried in the PDCCH, where N is a positive integer, wherein different The bit position information corresponds to the time domain position of different sTTIs.
The data scheduling method according to claim 2, wherein the determining, by the terminal, the resource indication information based on the PDCCH, includes:

The terminal detects the PDCCH, and obtains information about the N bits in the DCI that is carried in the PDCCH according to the detection result, and uses the information of the N bits as the resource indication information. .
The data scheduling method according to claim 1, wherein the resource indication information is characterized by a mask carried by the PDCCH, wherein different masks correspond to time domain locations of different sTTIs.
The data scheduling method according to claim 4, wherein the determining, by the terminal, the resource indication information based on the PDCCH includes:

The terminal detects the PDCCH, and obtains a mask carried in the PDCCH according to the detection result, and uses the mask as the resource indication information.
The data scheduling method according to claim 1, wherein the PDCCH is adopted The search space to characterize the resource indication information, wherein different search spaces correspond to time domain locations of different sTTIs.
The data scheduling method according to claim 6, wherein the determining, by the terminal, the resource indication information based on the PDCCH includes:

The terminal determines a search space of the PDCCH, and uses a search space of the PDCCH as the resource indication information.
The data scheduling method according to claim 6, wherein said different search spaces are:

The terminal-specific search space and the common search space belong to different search spaces; or,

Different subspaces in the terminal-specific search space belong to different search spaces; or

Different subspaces in the common search space belong to different search spaces.
The data scheduling method according to any one of claims 1 to 8, wherein

The subframe includes M1 slots, where each slot represents one sTTI, and correspondingly, the time domain position of the sTTI is represented by a corresponding slot sequence number, and M1 is a positive integer; or

The subframe includes M2 sTTIs, and the kth sTTIs in the M2 sTTIs include Lk OFDM symbols, and correspondingly, the time domain positions of the sTTIs are represented by corresponding sTTI numbers, where M2, k, Lk are positive Integer, 1 ≤ k ≤ M2, 1 ≤ Lk ≤ 14.
A data scheduling method, the method comprising:

The base station allocates a transmission resource to the terminal, and determines resource indication information corresponding to the transmission resource, where the resource indication information has a corresponding relationship with a time domain location of the sTTI used for transmitting data;

The base station sends a PDCCH to the terminal based on the resource indication information, so that the terminal determines a time domain location of the sTTI used by the transmission data based on the PDCCH.
The data scheduling method according to claim 10, wherein the resource indication information is characterized by N bits in a DCI carried in the PDCCH, where N is a positive integer A number in which different bit positions correspond to different time domain positions of the sTTI.
The data scheduling method according to claim 11, wherein the transmitting, by the base station, the PDCCH to the terminal according to the resource indication information includes:

The base station sets the resource indication information by using N bits in the DCI;

The base station sends a PDCCH carrying the DCI to the terminal.
The data scheduling method according to claim 10, wherein the resource indication information is characterized by a mask carried by the PDCCH, wherein different masks correspond to time domain locations of different sTTIs.
The data scheduling method according to claim 13, wherein the transmitting, by the base station, the PDCCH to the terminal according to the resource indication information includes:

Setting, by the base station, a mask that represents the resource indication information in the PDCCH;

The base station sends a PDCCH carrying the mask to the terminal.
The data scheduling method according to claim 10, wherein the resource indication information is characterized by a search space of the PDCCH, wherein different search spaces correspond to time domain locations of different sTTIs.
The data scheduling method according to claim 15, wherein the transmitting, by the base station, the PDCCH to the terminal according to the resource indication information includes:

The base station transmits the PDCCH to the terminal in a selected search space.
The data scheduling method according to claim 15, wherein said different search spaces are:

The terminal-specific search space and the common search space belong to different search spaces; or,

Different subspaces in the terminal-specific search space belong to different search spaces; or

Different subspaces in the common search space belong to different search spaces.
The data scheduling method according to any one of claims 10 to 17, wherein

The subframe includes M1 slots, wherein each slot represents an sTTI, and correspondingly, The time domain position of the sTTI is represented by a corresponding slot number, and M1 is a positive integer; or

The subframe includes M2 sTTIs, and the kth sTTIs in the M2 sTTIs include Lk OFDM symbols, and correspondingly, the time domain positions of the sTTIs are represented by corresponding sTTI numbers, where M2, k, Lk are positive Integer, 1 ≤ k ≤ M2, 1 ≤ Lk ≤ 14.
A data scheduling device, the device comprising:

a receiving unit, configured to receive a PDCCH sent by the base station;

a first determining unit, configured to determine, according to the PDCCH, resource indication information, where the resource indication information has a corresponding relationship with a time domain location of an sTTI used for transmitting data;

The second determining unit is configured to determine, according to the resource indication information, a time domain location of the sTTI used by the transmission data.
The data scheduling apparatus according to claim 19, wherein said resource indication information is characterized by N bits in a DCI carried in said PDCCH, wherein N is a positive integer, wherein different bit information corresponds to different The time domain location of the sTTI.
The data scheduling apparatus according to claim 19, wherein the resource indication information is characterized by a mask carried by the PDCCH, wherein different masks correspond to time domain locations of different sTTIs.
The data scheduling apparatus according to claim 19, wherein the resource indication information is characterized by a search space of the PDCCH, wherein different search spaces correspond to time domain locations of different sTTIs.
A data scheduling device, the device comprising:

a determining unit, configured to allocate a transmission resource to the terminal, and determine resource indication information corresponding to the transmission resource, where the resource indication information has a corresponding relationship with a time domain location of the sTTI used for transmitting data;

And a sending unit, configured to send, according to the resource indication information, a PDCCH to the terminal, so that the terminal determines, according to the PDCCH, a time domain location of the sTTI used by the transmission data.
The data scheduling apparatus according to claim 23, wherein said resource indication information is characterized by N bits in a DCI carried in said PDCCH, N being a positive integer, wherein different bit information corresponds to different The time domain location of the sTTI.
The data scheduling apparatus according to claim 23, wherein the resource indication information is characterized by a mask carried by the PDCCH, wherein different masks correspond to time domain locations of different sTTIs.
The data scheduling apparatus according to claim 23, wherein the resource indication information is characterized by a search space of the PDCCH, wherein different search spaces correspond to time domain locations of different sTTIs.
A computer storage medium storing computer executable instructions that, when executed, implement the method steps of any one of claims 1 to 18.