CN109565811B

CN109565811B - Data scheduling method and device and computer storage medium

Info

Publication number: CN109565811B
Application number: CN201780047644.8A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-08-07
Filing date: 2017-08-07
Publication date: 2021-03-12
Anticipated expiration: 2037-08-07
Also published as: CN109565811A; WO2019028619A1

Abstract

The embodiment of the application discloses a data scheduling method and device and a computer storage medium, wherein the method comprises the following steps: a terminal receives a PDCCH sent by a base station; the terminal determines resource indication information based on the PDCCH, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI used for transmitting data; and the terminal determines the time domain position of the sTTI adopted by the transmission data based on the resource indication information.

Description

Data scheduling method and device and computer storage medium

Technical Field

The application relates to the technical field of Internet of vehicles, in particular to a data scheduling method and device in the Internet of vehicles and a computer storage medium.

Background

In the Vehicle networking system, the Vehicle-mounted terminal transmits data by adopting a Long Term evolution-Vehicle to Vehicle (LTE-V2V, Long Term evolution-Vehicle to Vehicle) based Sidelink (SL, Sidelink) transmission technology. Different from a mode that communication data are received or sent through a base station in a traditional LTE system, the vehicle networking system adopts a mode of direct terminal-to-terminal communication, so that the vehicle networking system has higher spectral efficiency and lower transmission time delay.

The technology of vehicle networking is standardized in the third Generation Partnership Project (3 GPP) Rel-14, defining two modes of transmission. In both transmission modes, the content transmitted by the in-vehicle terminal on the Sidelink includes Sidelink Control Information (SCI) and data.

In 3GPP Rel-15, a short Transmission Time Interval (sTTI) is introduced, where sTTI indicates that data of a user is transmitted using M Orthogonal Frequency Division Multiplexing (OFDM) symbols, instead of a complete subframe, for example, M is 4 or M is 7.

In order to be compatible with the resource pool shared by the users using the sTTI in Rel-15 and the users in Rel-14, the users in Rel-15 need to send three kinds of information, which are: normal Scheduling Assignment information (SA), short SA, sTTI data, wherein SCI is carried in SA and short SA. In this case, if the scheduling information of the base station is scheduled based on the subframe, how the base station allocates resources to the terminal using the sTTI for data transmission is a problem to be solved.

Disclosure of Invention

In order to solve the foregoing technical problem, embodiments of the present application provide a data scheduling method and apparatus, and a computer storage medium.

The data scheduling method provided by the embodiment of the application comprises the following steps:

a terminal receives a PDCCH sent by a base station;

the terminal determines resource indication information based on the PDCCH, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI used for transmitting data;

and the terminal determines the time domain position of the sTTI adopted by the transmission data based on the resource indication information.

A data scheduling method provided in another embodiment of the present application includes:

a base station allocates transmission resources for a terminal and determines resource indication information corresponding to the transmission resources, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI (transmission time interval time) for transmitting data;

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

The data scheduling device provided by the embodiment of the application comprises:

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

a first determining unit, configured to determine resource indication information based on the PDCCH, where the resource indication information has a corresponding relationship with a time domain position of an sTTI used for data transmission;

a second determining unit, configured to determine, based on the resource indication information, a time domain position of an sTTI used for transmitting data.

Another embodiment of the present application provides a data scheduling apparatus, including:

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

and a sending unit, configured to send a PDCCH to a terminal based on the resource indication information, so that the terminal determines, based on the PDCCH, a time domain position of an sTTI used for data transmission.

The computer storage medium provided by the embodiment of the present application stores computer executable instructions, and the computer executable instructions, when executed, implement the data scheduling method of the embodiment of the present application.

In the technical scheme of the embodiment of the application, a terminal receives a PDCCH sent by a base station; the terminal determines resource indication information based on the PDCCH, wherein the resource indication information has a corresponding relation with a time domain position of a short transmission time interval (sTTI) for transmitting data; and the terminal determines the time domain position of the sTTI adopted by the transmission data based on the resource indication information. By adopting the technical scheme of the embodiment of the application, the transmission resource is allocated to the terminal adopting the sTTI by using the DCI loaded in the PDCCH, or the transmission resource is allocated to the terminal adopting the sTTI by using the search space of the PDCCH.

Drawings

Fig. 1 is a scene diagram of a transmission mode 3 of a vehicle-mounted terminal according to an embodiment of the present application;

fig. 2 is a scene diagram of a transmission mode 4 of the in-vehicle terminal according to the embodiment of the present application;

fig. 3 is a schematic diagram of an sTTI occupying one timeslot for data transmission according to an embodiment of the present application;

fig. 4 is a first flowchart illustrating a data scheduling method according to an embodiment of the present application;

FIG. 5 is a diagram of a subframe structure according to an embodiment of the present application;

fig. 6 is a second flowchart illustrating a data scheduling method according to an embodiment of the present application;

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

fig. 8 is a schematic structural diagram of a data scheduling apparatus according to an embodiment of the present application;

fig. 9 is a structural diagram of a terminal according to an embodiment of the present application;

fig. 10 is a structural diagram of a base station according to an embodiment of the present application.

Detailed Description

So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

The following is an explanation of key terms relevant to the embodiments of the present application:

LTE: long Term evolution, Long Term evolution

V2V: vehicle to Vehicle

V2X: vehicle to other devices

D2D: device to Device, terminal to terminal

And SA: scheduling Assignment, Scheduling Assignment

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

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, respectively: mode 3 and mode 4. Wherein the content of the first and second substances,

for mode 3: the transmission resource of the vehicle-mounted terminal is allocated by a base station (e.g., an evolved node B (eNB), and as shown in fig. 1, the vehicle-mounted terminal transmits data on a sidelink according to the resource allocated by the base station; the base station may allocate resources for single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

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

For mode 4: the vehicle-mounted terminal adopts a transmission mode of interception (sending) + reservation (reservation). As shown in fig. 2, the vehicle-mounted terminal acquires an available transmission resource set in a resource pool by means of interception, and the terminal randomly selects a resource from the transmission resource set to perform data transmission. Because the service in the car networking system has a periodic characteristic, the terminal generally adopts a semi-static transmission mode, that is, after the terminal selects one transmission resource, the resource is continuously used in a plurality of transmission cycles, so that the probability of resource reselection and resource conflict is reduced. The terminal can carry the information of the reserved secondary transmission resource in the SCI transmitted this time, so that other terminals can judge whether the resource is reserved and used by the user by detecting the SCI of the user, and the purpose of reducing resource conflict is achieved.

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

In Rel-15, sTTI is introduced, where sTTI indicates that data of a user is transmitted using M OFDM symbols instead of one complete subframe, e.g., M ═ 4; and M is 7. And the users requiring the sTTI of Rel-15 and the users of Rel-14 share the resource pool, which cannot have great influence on the process of resource interception and selection of the Rel-14 users, so the users requiring the Rel-14 can detect the SCI of the Rel-15 users, know the resource occupation condition of the Rel-15, and thus perform resource interception and selection. This forces the users of Rel-15 to send the SCI compatible with Rel-14, where the SCI compatible with Rel-14 in Rel-15 is called normal SA, and for the purpose of reducing the Rel-15 latency, the users of Rel-15 also need to send short control information, where the short control information is called short SA (SAs). The terminal of Rel-15 can obtain the control information corresponding to the data through detection sSA, and accordingly, the data detection is performed without waiting until a subframe (i.e. 1ms) is finished to detect the normal SA, so that the time delay can be reduced. And the terminal of Rel-14 acquires the resource occupation condition of the user of Rel-15 by detecting the normal SA, thereby carrying out interception and selection. Therefore, the user of Rel-15 needs to send three kinds of information: normal SA, short SA, sTTI data. Fig. 3 is a schematic diagram of the sTTI of this embodiment occupying one slot for data transmission, and as shown in fig. 3, the sTTI occupies one slot, that is, the sTTI occupies 7 OFDM symbols, and a terminal needs to send three types of information: normal SA, short SA, sTTI data.

As shown in fig. 3, sTTI may occupy the first time slot of a subframe, or may occupy the second time slot, and if the scheduling information (carried in DCI) of the base station is scheduled based on the subframe, how the base station allocates resources to the terminal that uses the sTTI to transmit data using DCI is a problem that the embodiment of the present application aims to solve.

Fig. 4 is a first flowchart of a data scheduling method according to an embodiment of the present application, where 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: and the terminal receives the PDCCH sent by the base station.

In the embodiment of the present application, the terminal receives the PDCCH transmitted by the base station, and here, the terminal may be implemented in various forms. For example, the terminal described in the embodiments of the present application may include a mobile terminal such as an in-vehicle device, a mobile phone, a tablet computer, a notebook computer, a palm computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like. A base station may be implemented in various forms. For example, the base station described in the embodiments of the present application may include an eNB, and a base station device in a future 5G system.

In this embodiment, the PDCCH is a downlink control channel sent by the base station to the terminal, and the PDCCH carries DCI, where the DCI includes uplink and downlink resource allocation information, Hybrid Automatic Repeat reQuest (HARQ) information, power control information, and the like.

Step 402: the terminal determines resource indication information based on the PDCCH, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI used for transmitting data.

In the embodiment of the present application, the resource indication information may be implemented in the following three ways:

the first method is as follows: the resource indication information is characterized by N bits in DCI carried in the PDCCH, wherein N is a positive integer, and different bit information corresponds to different time domain positions of the sTTI.

Based on this, the terminal determines resource indication information based on the PDCCH, specifically: the terminal detects the PDCCH, obtains the N bits of information in the DCI loaded in the PDCCH based on a detection result, and takes the N bits of information as the resource indication information.

The second method comprises the following steps: and representing the resource indication information by using masks carried by the PDCCH, wherein different masks correspond to different time domain positions of the sTTI.

Based on this, the terminal determines resource indication information based on the PDCCH, specifically: and the terminal detects the PDCCH, obtains a mask carried in the PDCCH based on a detection result, and takes the mask as the resource indication information.

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

The third method comprises the following steps: and characterizing the resource indication information by a search space of the PDCCH, wherein different search spaces correspond to different time domain positions of the sTTI.

Based on this, the terminal determines resource indication information based on the PDCCH, specifically: and the terminal determines the search space of the PDCCH and takes 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 may in turn be divided into a plurality of subspaces.

The different search spaces refer to:

the terminal-specific search space and the common search space belong to different search spaces; alternatively, the first and second electrodes may be,

different subspaces in the terminal-specific search space belong to different search spaces; alternatively, the first and second electrodes may be,

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

In the above scheme of the embodiment of the present application, a subframe includes M1 time slots, where each time slot represents one sTTI, and accordingly, a time domain position of the sTTI is represented by a corresponding time slot number, and M1 is a positive integer; or the subframe includes M2 sTTI, where the kth sTTI of the M2 sTTI includes Lk OFDM symbols, and accordingly, the time domain position of the sTTI is characterized by a corresponding sTTI sequence number, where M2, k, and Lk are positive integers, k is greater than or equal to 1 and less than or equal to M2, and Lk is greater than or equal to 1 and less than or equal to 14.

Step 403: and the terminal determines the time domain position of the sTTI adopted by the transmission data based on the resource indication information.

The technical solution of the embodiment of the present application is further described below with reference to specific application scenarios.

Application scenario one

Specific bits in the DCI are used to describe the resource indication information, and specifically, the position of the sTTI used for transmitting data, that is, the time domain resource of the sTTI, is characterized by N bits in the DCI.

For example, for slot-based sTTI, 1 bit of information is used in DCI to indicate whether the DCI schedules the first slot or the second slot in a subframe, as shown in table 1 below:

TABLE 1

If the resource indication information is 0, the position of the sTTI is indicated as a first time slot in the subframe, and if the resource indication information is 1, the position of the sTTI is indicated as a second time slot in the subframe.

For example, N is 2, one subframe includes 4 sTTI (as shown in fig. 5), and 2 bits of information are used in DCI to indicate which sTTI in the subframe the DCI is scheduled, as shown in table 2 below:

resource indicator information (2 bit)	Position of sTTI in subframe
		00	sTTI 0
01	sTTI 1
		10	sTTI 2
11	sTTI 3

TABLE 2

If the resource indication information is 00, the position of the sTTI is sTTI 0 in the subframe, if the resource indication information is 01, the position of the sTTI is sTTI 1 in the subframe, if the resource indication information is 10, the position of the sTTI is sTTI 2 in the subframe, and if the resource indication information is 11, the position of the sTTI is sTTI 3 in the subframe.

Application scenario two

The position of the sTTI adopted by the transmission data is represented by different masks, specifically, after Cyclic Redundancy Check (CRC) information is added to the DCI information, the DCI information is scrambled by using a Radio Network Temporary Identity (RNTI) sequence and is subjected to mask processing by using the mask sequence, so that the DCI information subjected to scrambling and mask processing is obtained. Which sTTI in a subframe the DCI schedules is indicated by different masks.

For example: based on the sTTI of the slot, the mask shown in table 3 below is used to indicate that the DCI schedules the next slot in the subframe:

TABLE 3

For example: if a subframe includes 4 sTTI, it can be indicated by the mask as shown in table 4 below that the DCI schedules the several sTTI in the subframe:

TABLE 4

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

In the above scheme, the DCI information may be processed by the following processing procedures:

1) the bit information of the DCI is represented as: a is₀,a₁,a₂,a₃,...,a_A-1CRC-checked bit information of p₀,p₁,p₂,p₃,...,p_L-1Where a denotes the bit length of the information and L denotes the check bit length. The CRC-added bit sequence (i.e., the first bit sequence) is denoted as b₀,b₁,b₂,b₃,...,b_B-1Wherein B ═ a + L, specifically:

when k is 0,1,2, …, A-1, b_k＝a_k

When k is a, a +1, a +2,.., a + L-1, b_k＝p_k-A

2) Scrambling and masking the bit sequence after CRC addition, in this embodiment, the scrambling sequence is composed of corresponding RNTI (radio network temporary identifier), that is, x_rnti,0,x_rnti,1,...,x_rnti,15Determined, the mask sequence is x_maskThe sequence after scrambling and masking is c₀,c₁,c₂,c₃,...,c_B-1Wherein, in the step (A),

when k is 0,1,2, …, A-1, c_k＝b_k

k is a, a +1, a +2, a +15, c_k＝(b_k+x_rnti,k-A+x_mask,k-A)mod2

Application scenario three

The position of the sTTI adopted for transmitting data is characterized by different search spaces of the PDCCH. Here, the search space is divided into a terminal-specific search space (UE-specific search space) and a Common search space (Common search space). The base station can indicate that the PDCCH schedules the several sTTI in the subframe by using the mode of transmitting the PDCCH in different search spaces. The terminal may also determine that the PDCCH schedules the sTTI of the subframe according to the search space in which the PDCCH is located.

For example: the slot-based sTTI may indicate a first sTTI in a scheduled subframe by transmitting PDCCH in a dedicated search space and a second sTTI in a scheduled subframe by transmitting PDCCH in a common search space, as shown in table 5 below:

	position of sTTI in subframe
		Proprietary search spaces	First time slot
Common search spaces	Second time slot

TABLE 5

For example: one subframe includes four sTTI, and a common search space or a terminal-specific search space may be divided into four subspaces, where a PDCCH transmitted in a k-th subspace indicates a k-th sTTI in a scheduling subframe, and k is 1,2, 3, and 4, as shown in table 6 below:

	position of sTTI in subframe
		Subspace
0	sTTI 0
		Subspace 1	sTTI 1
Subspace 2	sTTI 2
		Subspace 3	sTTI 3

TABLE 6

The above-mentioned scheme of the embodiment of the present application is described by taking an example that one subframe includes 2 or 4 sTTI, and those skilled in the art should understand that the subframe may also include other numbers of sTTI.

Fig. 6 is a flowchart illustrating a second data scheduling method according to an embodiment of the present application, where the data scheduling method in this example is applied to a base station side, and as shown in fig. 6, the data scheduling method includes the following steps:

step 601: the base station allocates transmission resources for the terminal and determines resource indication information corresponding to the transmission resources, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI used for transmitting data.

In the embodiment of the present application, a base station first allocates a transmission resource to a terminal, that is, the base station first determines a time domain position of an sTTI used for transmitting data, and then determines resource indication information corresponding to the transmission resource.

In one embodiment, a subframe includes M1 slots, where each slot represents an sTTI, and accordingly, a time domain position of the sTTI is represented by a corresponding slot index, and M1 is a positive integer.

In another embodiment, the subframe includes M2 sTTI, the kth sTTI in the M2 sTTI includes Lk OFDM symbols, and accordingly, the time domain position of the sTTI is characterized by the corresponding sTTI sequence number, wherein M2, k, and Lk are positive integers, 1 ≦ k ≦ M2, and 1 ≦ Lk ≦ 14.

Step 602: and the base station sends a PDCCH to the terminal based on the resource indication information, so that the terminal determines the time domain position of the sTTI adopted by the transmission data based on the PDCCH.

Correspondingly, the base station sets the resource indication information through N bits in the DCI; and the base station sends the PDCCH bearing the DCI to the terminal.

The second method comprises the following steps: the resource indication information is characterized by masks carried by the PDCCH, wherein different masks correspond to different time domain positions of the sTTI.

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

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

The third method comprises the following steps: the resource indication information is characterized by a search space of the PDCCH, wherein different search spaces correspond to different time domain positions of the sTTI.

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

Here, the different search spaces refer to:

Fig. 7 is a schematic structural diagram of a data scheduling apparatus according to an embodiment of the present application, where the data scheduling apparatus in this example is applied to a terminal side, as shown in fig. 7, the apparatus includes:

a receiving unit 701, configured to receive a PDCCH sent by a base station;

a first determining unit 702 configured to determine resource indication information based on the PDCCH, where the resource indication information has a corresponding relationship with a time domain position of an sTTI used for data transmission;

a second determining unit 703 is configured to determine, based on the resource indication information, a time domain position of an sTTI used for transmitting data.

In this embodiment of the present application, the resource indication information is represented by N bits in downlink control information DCI carried in the PDCCH, where N is a positive integer, and different bit information corresponds to different time domain positions of an sTTI.

The first determining unit 702 is specifically configured to: and detecting the PDCCH, obtaining the N bits of information in the DCI carried in the PDCCH based on a detection result, and taking the N bits of information as the resource indication information.

In this embodiment of the present application, the resource indication information is represented by a mask carried by the PDCCH, where different masks correspond to different time domain positions of the sTTI.

The first determining unit 702 is specifically configured to: and detecting the PDCCH, obtaining a mask carried in the PDCCH based on a detection result, and taking the mask as the resource indication information.

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

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

Here, the different search spaces refer to:

Those skilled in the art will appreciate that the functions performed by the various elements of the apparatus shown in fig. 7 may be understood by reference to the associated description of the foregoing methods. The functions of the units in the apparatus shown in fig. 7 may be implemented by a program running on a processor, or may be implemented by specific logic circuits.

Fig. 8 is a schematic structural diagram of a data scheduling apparatus according to an embodiment of the present application, where the data scheduling apparatus in this example is applied to a base station side, and as shown in fig. 8, the apparatus includes:

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

a sending unit 802, configured to send a PDCCH to a terminal based on the resource indication information, so that the terminal determines, based on the PDCCH, a time domain position of an sTTI used for data transmission.

In this embodiment of the application, the resource indication information is characterized by N bits in DCI carried in the PDCCH, where N is a positive integer, and different bit information corresponds to different time domain positions of the sTTI.

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

the sending unit 802 is specifically configured to: and sending the PDCCH bearing the DCI to the terminal.

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

the sending unit 802 is specifically configured to: and sending the PDCCH carrying the mask to the terminal.

The processing unit is further configured to obtain a first bit sequence based on the bit information of the DCI and the bit information of the cyclic redundancy check; and obtaining a sequence of the DCI after scrambling and mask processing based on the first bit sequence, the scrambling sequence and the mask sequence.

In this embodiment of the present application, the resource indication information is characterized by a search space of the PDCCH, where different search spaces correspond to different time domain positions of the sTTI.

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

Here, the different search spaces refer to:

In the embodiment of the application, a subframe comprises M1 slots, wherein each slot represents an sTTI, and accordingly, 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 sTTI, where the kth sTTI of the M2 sTTI includes Lk OFDM symbols, and accordingly, the time domain position of the sTTI is characterized by a corresponding sTTI sequence number, where M2, k, and Lk are positive integers, k is greater than or equal to 1 and less than or equal to M2, and Lk is greater than or equal to 1 and less than or equal to 14.

Those skilled in the art will appreciate that the functions performed by the various elements of the apparatus shown in fig. 8 may be understood by reference to the preceding description of the method. The functions of the units in the apparatus shown in fig. 8 may be implemented by a program running on a processor, or may be implemented by specific logic circuits.

An embodiment of the present application further provides a terminal, as shown in fig. 9, where the terminal includes: at least one processor 901, 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 is understood that the bus system 905 is used to enable communications among the components. The bus system 905 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 9 as bus system 905.

The user interface 903 may include, among other things, a display, a keyboard, buttons, or a pointing device, such as a mouse, trackball (trackball), touch pad, or touch screen.

It will be appreciated that the memory 902 in the subject embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory.

In some embodiments, memory 902 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

an operating system 9021 and application programs 9022.

In this embodiment, the processor 901 is configured to: receiving a PDCCH sent by a base station; determining resource indication information based on the PDCCH, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI used for transmitting data; and determining the time domain position of the sTTI adopted by the transmission data based on the resource indication information.

An embodiment of the present application further provides a base station, as shown in fig. 10, where the base station includes: at least one processor 1001, memory 1002, at least one network interface 1003. The various components in the base station are coupled together by a bus system 1004. It is understood that the bus system 1004 is used to enable communications among the components. The bus system 84 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for the sake of clarity the various busses are labeled in fig. 10 as the bus system 1004.

It is to be appreciated that the memory 1002 in the subject embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory.

In some embodiments, memory 1002 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:

an operating system 10021 and applications 10022.

Wherein the processor 1001 is configured to: allocating transmission resources for a terminal, and determining resource indication information corresponding to the transmission resources, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI (transmission time interval) for transmitting data; and sending a PDCCH to the terminal based on the resource indication information so that the terminal determines the time domain position of the sTTI adopted by the transmission data based on the PDCCH.

The above-mentioned device of the embodiment of the present application, if implemented in the form of a software functional module and sold or used as a standalone product, may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or portions thereof contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.

Correspondingly, the embodiment of the present application further provides a computer storage medium, in which a computer program is stored, and the computer program is used for executing the data scheduling method of the embodiment of the present application.

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

Claims

1. A method of data scheduling, the method comprising:

a terminal receives a downlink control channel PDCCH sent by a base station;

the terminal determines resource indication information based on the PDCCH, wherein the resource indication information has a corresponding relation with a time domain position of a short transmission time interval (sTTI) for transmitting data; the resource indication information is characterized by a search space of the PDCCH; different search spaces correspond to different time domain positions of the sTTI;

2. The data scheduling method of claim 1, wherein the terminal determines resource indication information based on the PDCCH, comprising:

and the terminal determines the search space of the PDCCH and takes the search space of the PDCCH as the resource indication information.

3. The data scheduling method of claim 1, wherein the different search spaces refer to:

4. The data scheduling method of any one of claims 1 to 3,

the subframe comprises M1 time slots, wherein each time slot represents an sTTI, correspondingly, the time domain position of the sTTI is represented by a corresponding time slot sequence number, and M1 is a positive integer; alternatively, the first and second electrodes may be,

the subframe comprises M2 sTTI, the kth sTTI in the M2 sTTI comprises Lk OFDM symbols, and correspondingly, the time domain position of the sTTI is characterized by the corresponding sTTI sequence number, wherein M2, k and Lk are positive integers, k is more than or equal to 1 and less than or equal to M2, and Lk is more than or equal to 1 and less than or equal to 14.

5. A method of data scheduling, the method comprising:

a base station allocates transmission resources for a terminal and determines resource indication information corresponding to the transmission resources, wherein the resource indication information has a corresponding relation with a time domain position of an sTTI (transmission time interval time) for transmitting data; the resource indication information is characterized by a search space of a PDCCH; different search spaces correspond to different time domain positions of the sTTI;

6. The data scheduling method of claim 5, wherein the base station transmits the PDCCH to the terminal based on the resource indication information, comprising:

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

7. The data scheduling method of claim 5, wherein the different search spaces refer to:

8. The data scheduling method of any one of claims 5 to 7,

9. An apparatus for data scheduling, the apparatus comprising:

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

a first determining unit, configured to determine resource indication information based on the PDCCH, where the resource indication information has a corresponding relationship with a time domain position of an sTTI used for data transmission; the resource indication information is characterized by a search space of the PDCCH; different search spaces correspond to different time domain positions of the sTTI;

10. An apparatus for data scheduling, the apparatus comprising:

a determining unit, configured to allocate transmission resources for a terminal, and determine resource indication information corresponding to the transmission resources, where the resource indication information has a corresponding relationship with a time domain position of an sTTI used for data transmission; the resource indication information is characterized by a search space of a PDCCH; different search spaces correspond to different time domain positions of the sTTI;

11. A computer storage medium storing computer-executable instructions that, when executed, implement the method steps of any of claims 1 to 8.