CN109218244B - Data transmission method, device, user terminal and computer readable storage medium - Google Patents

Data transmission method, device, user terminal and computer readable storage medium Download PDF

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CN109218244B
CN109218244B CN201710539954.3A CN201710539954A CN109218244B CN 109218244 B CN109218244 B CN 109218244B CN 201710539954 A CN201710539954 A CN 201710539954A CN 109218244 B CN109218244 B CN 109218244B
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stti
information
data transmission
control signaling
downlink control
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CN109218244A (en
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邓云
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2692—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with preamble design, i.e. with negotiation of the synchronisation sequence with transmitter or sequence linked to the algorithm used at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A data transmission method, a data transmission device, a user terminal and a computer readable storage medium are provided. The method comprises the following steps: receiving sTTI configuration information sent by a base station, wherein the sTTI configuration information comprises: length information of an sTTI (transmission time interval) and time interval information applying the sTTI, wherein the length of the sTTI is less than 1 ms; and detecting a downlink control signaling in the corresponding sTTI based on the sTTI configuration information, and transmitting data according to the detected downlink control signaling. By applying the scheme, the obvious increase of processing complexity and power consumption of the UE when the sTTI is applied can be avoided.

Description

Data transmission method, device, user terminal and computer readable storage medium
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method, an apparatus, a user terminal, and a computer-readable storage medium.
Background
In a conventional Long Term Evolution (LTE) system, a base station transmits Downlink Control signaling (DCI) to a User Equipment (UE) by using a Transmission Time Interval (TTI) of a fixed length, and the DCI is used to schedule Downlink data and uplink data. Wherein the length of the TTI is 1 ms.
For a TTI of 1ms length, a UE in a connected state needs to detect DCI12 times in a common search region located in a Physical Downlink Control Channel (PDCCH) region and DCI 32 times in a UE-specific search region in the PDCCH region, and the total number of blind detections reaches 44 times.
To reduce latency, shorter length TTIs will be introduced in LTE systems. In order to distinguish from a TTI of 1ms, an sTTI is used to indicate a TTI of shorter length, sDCI is used to indicate DCI transmitted in sTTI, and sPDCCH is used to indicate PDCCH transmitting sDCI.
After introducing sTTI, taking the length of sTTI2 symbols as an example, for extended Cyclic Prefix (CP), there will be 6 sTTI in one subframe. Within 1ms, the UE needs to blind-detect DCI in a common search region in a PDCCH region and a UE-specific search region in an sPDCCH region in each sTTI, the total number of blind-detections far exceeds 44 times, power consumption of the UE is large, and processing complexity of the UE is increased at the same time.
In view of the above situation, how to avoid the significant increase of processing complexity and power consumption when the UE applies the sTTI becomes a technical problem to be solved urgently.
Disclosure of Invention
The problem to be solved by the present invention is how to avoid significant increase of processing complexity and power consumption of the UE when applying sTTI.
In order to solve the above problem, an embodiment of the present invention provides a data transmission method, where the method includes: receiving sTTI configuration information sent by a base station, wherein the sTTI configuration information comprises: length information of an sTTI (transmission time interval) and time interval information applying the sTTI, wherein the length of the sTTI is less than 1 ms; and detecting a downlink control signaling in the corresponding sTTI based on the sTTI configuration information, and transmitting data according to the detected downlink control signaling.
Optionally, the length information of the sTTI includes at least one of:
uplink sTTI length information; downlink sTTI length information.
Optionally, the time interval information to which the sTTI is applied is received from a radio resource control signaling sent by the base station and a downlink control signaling detected in a corresponding sTTI.
Optionally, the applying the time interval information of the sTTI includes: and the base station schedules the number of the sub-frames or the number of the sTTI at the interval of the user terminal twice continuously.
Optionally, the applying the time interval information of the sTTI includes: and the base station schedules the period information of the user terminal according to the sTTI, and schedules the position indication information of the user terminal according to the sTTI in each period.
Optionally, the scheduling, in each period, the location indication information of the ue by the sTTI includes: and scheduling the identification information of the sub-frame or the time slot of the user terminal in each period by the sTTI.
Optionally, the detecting, based on the sTTI configuration information, a downlink control signaling in a corresponding sTTI includes: and detecting the downlink control signaling on the subframe or the time slot identified in each period based on the sTTI configuration information.
Optionally, the detecting, based on the sTTI configuration information, a downlink control signaling in a corresponding sTTI includes: detecting the downlink control signaling at a first position in each period based on the sTTI configuration information, the first position including: the identified subframe and a first number of subframes, time slots or sTTI behind the identified subframe are continuously preset; or, the identified time slot and the identified time slot are followed by a preset first number of subframes, time slots or sTTI.
Optionally, the sTTI configuration information further includes: and applying the starting indication information of the sTTI scheduling.
Optionally, the method further comprises: and when the downlink control signaling is not detected within a preset time length based on the sTTI configuration information, suspending the sTTI, and reserving the sTTI configuration information.
Optionally, after suspending the sTTI, the method further comprises: and when low-delay data to be transmitted exist, transmitting indication information for recovering sTTI scheduling to the base station, and detecting a downlink control signaling in a corresponding sTTI according to the sTTI configuration information so as to transmit data.
Optionally, after suspending the sTTI, the method further comprises: and when receiving the indication information which is sent by the base station and used for reapplying the sTTI, reapplying the sTTI and carrying out data transmission.
An embodiment of the present invention further provides a data transmission apparatus, where the apparatus includes: a receiving unit, adapted to receive sTTI configuration information sent by a base station, where the sTTI configuration information includes: length information of an sTTI (transmission time interval) and time interval information applying the sTTI, wherein the length of the sTTI is less than 1 ms; a detecting unit, adapted to detect a downlink control signaling in a corresponding sTTI based on the sTTI configuration information; and the data transmission unit is suitable for transmitting data according to the detected downlink control signaling.
Optionally, the length information of the sTTI includes at least one of: uplink sTTI length information; downlink sTTI length information.
Optionally, the receiving unit receives the time interval information to which the sTTI is applied from a radio resource control signaling sent by a base station and a downlink control signaling detected in a corresponding sTTI.
Optionally, the applying the time interval information of the sTTI includes: and the base station schedules the number of the sub-frames or the number of the sTTI at the interval of the user terminal twice continuously.
Optionally, the applying the time interval information of the sTTI includes: and the base station schedules the period information of the user terminal according to the sTTI, and schedules the position indication information of the user terminal according to the sTTI in each period.
Optionally, the scheduling, in each period, the location indication information of the ue by the sTTI includes: and scheduling the identification information of the sub-frame or the time slot of the user terminal in each period by the sTTI.
Optionally, the detecting unit is adapted to detect the downlink control signaling on the subframe or timeslot identified in each period based on the sTTI configuration information.
Optionally, the detecting unit is adapted to detect the downlink control signaling at a first location in each period based on the sTTI configuration information, where the first location includes: the identified subframe and a first number of subframes, time slots or sTTI behind the identified subframe are continuously preset; or, the identified time slot and the identified time slot are followed by a preset first number of subframes, time slots or sTTI.
Optionally, the sTTI configuration information further includes: and applying the starting indication information of the sTTI scheduling.
Optionally, the apparatus further comprises: and the suspension unit is suitable for suspending the sTTI and reserving the sTTI configuration information when the downlink control signaling is not detected in a preset time period based on the sTTI configuration information.
Optionally, the apparatus further comprises: the sending unit is suitable for sending indication information for recovering sTTI scheduling to the base station when low-delay data to be sent exists after the sTTI is suspended; the detecting unit is further adapted to detect the downlink control signaling in the corresponding sTTI according to the sTTI configuration information after the transmitting unit transmits the indication information for recovering the sTTI scheduling to the base station, so as to perform data transmission.
Optionally, the data transmission unit is further adapted to, after suspending the sTTI, reapply the sTTI and perform data transmission when receiving indication information sent by the base station to reapply the sTTI.
Embodiments of the present invention further provide a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method of any one of the above-mentioned steps is performed.
The embodiment of the present invention further provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes any of the steps of the method when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
by adopting the scheme, the sTTI configuration information sent by the base station comprises the time interval information of the application sTTI, so the terminal can detect the downlink control signaling according to the time interval information of the sTTI without continuously detecting the downlink control signaling, thereby avoiding the obvious increase of the processing complexity and the power consumption of the UE when the sTTI is applied.
Drawings
FIG. 1 is a flow chart of a data transmission method in an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention.
Detailed Description
In the LTE system, one radio frame includes 10 subframes and has a length of 10 ms. Each subframe is 1ms in length. Each subframe contains two slots, each slot being 0.5ms in length. For a normal CP, each slot contains 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols. For extended CP, each slot contains 6 OFDM symbols.
For a TTI of 1ms length, a UE in the connected state needs to detect DCI of a common search region located in the PDCCH region 12 times and DCI of a UE-specific search region in the PDCCH region 32 times, for a total number of blind detections of 44 times.
In order to reduce the delay, the LTE system will introduce sTTI with shorter length. After introducing sTTI, taking the length of sTTI2 symbols as an example, for extended Cyclic Prefix (CP), there will be 6 sTTI in one subframe. The UE needs to blind-detect the DCI in the UE-specific search region in the PDCCH region and the sPDCCH region in each sTTI, the total number of blind-detections in 1ms will far exceed 44 times, power consumption of the UE is large, and processing complexity of the UE is increased.
In view of the above problems, embodiments of the present invention provide a data transmission method, in which time interval information of an application sTTI is set in sTTI configuration information sent by a base station, so a terminal can detect a downlink control signaling according to the time interval information of the sTTI without continuously detecting the downlink control signaling, thereby avoiding an obvious increase in processing complexity and power consumption when a UE applies the sTTI.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a data transmission method, where the method specifically includes the following steps:
step 11, receiving sTTI configuration information sent by a base station, where the sTTI configuration information includes: length information of an sTTI and time interval information applying the sTTI, wherein the length of the sTTI is less than 1 ms.
In a specific implementation, the specific length of the sTTI is not limited, for example, the length of the sTTI may be 2 OFDM symbols or 7 OFDM symbols.
In a specific implementation, after the UE accesses the serving cell and establishes the RRC connection, the UE may report capability information of the UE to the base station, for example, the UE may report that the UE supports sTTI scheduling to the base station, and the length of the supported sTTI is 2 symbol lengths. After the base station receives the capability information reported by the UE and the UE establishes a service bearer with a low delay requirement, for example, if a quality of service parameter of a certain data radio bearer of the UE indicates the low delay requirement, the base station may configure sTTI configuration information for the UE.
In a specific implementation, the sTTI configuration information may include: length information of the sTTI and time interval information to which the sTTI is applied.
In an embodiment of the present invention, the length information of the sTTI may be length information of an uplink sTTI, and is used to schedule the UE to perform uplink data transmission according to the length information of the uplink sTTI.
In another embodiment of the present invention, the length information of the sTTI may also be downlink sTTI length information, and is used to schedule the UE to perform downlink data transmission according to the downlink sTTI length information, that is, decode the downlink control signaling on the OFDM symbol corresponding to the downlink sTTI length, and receive the downlink data according to the downlink control signaling.
In another embodiment of the present invention, the length information of the sTTI may further include length information of an uplink sTTI and length information of a downlink sTTI, that is, length information of an sTTI required for uplink data transmission and downlink data transmission is configured for the UE at the same time, that is, the downlink control signaling is decoded on an OFDM symbol corresponding to the length of the downlink sTTI, and uplink data is transmitted according to the downlink control signaling.
In a specific implementation, the length of the uplink sTTI and the length of the downlink sTTI may be the same or different, and are not limited specifically. For example, the uplink sTTI length can be 3 OFDM symbols, but the downlink sTTI length is 2 ODM symbols.
In a specific implementation, the time interval information to which the sTTI is applied may be set by using a variety of methods, and is not limited specifically.
In an embodiment of the present invention, the time interval information of applying the sTTI may include: and the base station schedules the number of the sub-frames or the number of the sTTI at the interval of the UE twice continuously. The number of subframes or the number of sTTI at which the base station schedules the UE twice continuously is not limited, and may be specifically set by a person skilled in the art according to actual needs, for example, the number of subframes or the number of sTTI at an interval is set according to the processing capability of the UE.
In another embodiment of the present invention, the time interval information for applying the sTTI may include: and the base station schedules the period information of the UE according to the sTTI, and schedules the position indication information of the UE according to the sTTI in each period.
In a specific implementation, the base station may configure the period of the sTTI, for example, the base station schedules the UE with a period of 10ms, that is, the UE detects the dci at a corresponding position every 10ms, where the corresponding position may include positions of one or more sTTI in the period, for example, one or more sTTI positions starting from a starting position of the period in the 10ms period, and the UE only needs to detect downlink control signaling in the one or more sTTI positions starting from the starting position of the period.
In an embodiment of the present invention, the location indication information for scheduling the ue in the sTTI in each period may include: and scheduling the identification information of the sub-frame or the time slot of the user terminal by the sTTI in each period, namely the terminal only needs to detect the downlink control signaling in the sub-frame or the time slot corresponding to the sub-frame or the time slot identification in the period.
And step 12, based on the sTTI configuration information, detecting a downlink control signaling in the corresponding sTTI, and performing data transmission according to the detected downlink control signaling.
For example, the base station may set the minimum interval of two consecutive times for scheduling the UE with the sTTI to be 4 subframes, after the base station schedules the UE with the sTTI in subframe 1, the base station may only schedule the UE with the sTTI in the next subframe 5, and schedule the UE with the TTI of 1ms in subframes 2, 3, and 4 or not schedule the UE.
For another example, when the sTTI length is 2 OFDM symbols, there are 6 sTTI in a subframe, and these are sequentially denoted as sTTI 1-sTTI 6. The base station may set the minimum interval of two consecutive times of scheduling in sTTI to be the length of 2 sTTI, and when the base station has already scheduled the UE through the dci in the first sTTI, the UE is not scheduled in sTTI2 and sTTI3, and the UE is scheduled again in sTTI 4. At this time, the UE only needs to detect sDCI at sTTI 4.
In an embodiment of the present invention, the UE may receive the time interval information to which the sTTI is applied only from a Radio Resource Control (RRC) signaling sent by the base station.
In another embodiment of the present invention, the UE may also receive time interval information to which the sTTI is applied from RRC signaling and DCI (i.e., sdir) detected within the corresponding sTTI.
In a specific implementation, since the number of bits that can be transmitted in the sDCI is limited, the base station may configure an index corresponding to a time interval to which the sTTI is applied in the sDCI, and configure a time interval to which the sTTI is applied corresponding to different indexes in RRC signaling. For example, the base station may configure, in the RRC signaling, that the index corresponding to the subframe to which the time interval of the sTTI is applied is 2 is 0, the index corresponding to the subframe to which the time interval of the sTTI is applied is 3 is 1, and meanwhile, in the sdic, one bit is used to indicate that the index corresponding to the time interval to which the sTTI is next applied is 0 (the bit is set to be 0), or the same bit is used to indicate that the index corresponding to the time interval to which the sTTI is applied is 1 (the bit is set to be 1). And the UE searches from RRC signaling based on the index number in the sDCI, so that the time interval of the next UE scheduled by applying the sTTI can be obtained.
In a specific implementation, when the time interval information applying the sTTI includes cycle information that the base station schedules the UE in the sTTI and location indication information that the UE is scheduled in the sTTI in each cycle, the UE may detect the downlink control signaling on a subframe or a timeslot identified in each cycle based on the sTTI configuration information. That is, the UE may detect the sDCI on a determined number of subframes or slots per period.
Taking the period of the sTTI as 10ms as an example, the base station may, in each period indicated by the sTTI configuration information, schedule the subframe of the UE with the sTTI as the first 2 subframes. At this time, for the first 2 subframes, the base station may schedule the UE using sTTI, and the UE needs to blindly detect the sdic. For the other 8 subframes, the base station will only schedule the UE with or without a TTI of length 1 ms.
In a specific implementation, when the time interval information applying the sTTI includes cycle information that the base station schedules the UE with the sTTI and location indication information that the UE is scheduled with the sTTI in each cycle, the UE may detect the downlink control signaling at a first location in each cycle based on the sTTI configuration information.
Wherein the first position may include: the identified subframe and a first number of subframes, time slots or sTTI behind the identified subframe are continuously preset; or, the identified time slot and the identified time slot are followed by a preset first number of subframes, time slots or sTTI.
Taking the cycle of the sTTI as 10ms as an example, the base station indicates, in each cycle, that the timeslot in which the UE is scheduled by the sTTI is the 1 st timeslot by the base station according to the sTTI configuration information. At this time, when the UE knows that the base station uses sTTI scheduling itself in the 1 st slot of the 10ms period, it means that the base station has low-latency data to send, so the UE can continue to detect the sDCI in the next slot (or several slots or several subframes).
In an embodiment of the present invention, in order to better schedule the UE, the sTTI configuration information sent by the base station may further include: and applying the starting indication information of the sTTI scheduling.
In a specific implementation, the start indication information to which the sTTI scheduling is applied may be a trigger signaling to which the sTTI scheduling is applied, or start subframe or timeslot information to which the sTTI scheduling is applied, and is not limited specifically. After receiving the start indication information for applying the sTTI scheduling, the UE may detect the sDCI in the corresponding sTTI according to the sTTI configuration information, and perform data transmission according to the detected sDCI, including receiving downlink data and performing uplink data transmission according to the sDCI indication.
For the UE supporting sTTI scheduling, after receiving the sTTI configuration information sent by the base station, the base station may schedule the UE using sdic, so as to facilitate timely transmission of low-latency data. In the embodiment of the present invention, the low-latency data generally refers to data with a transmission latency of less than 50ms, and the transmission latency refers to a time delay of data transmission between the UE and the core network.
In a specific implementation, the sDCI generally includes resource configuration information for downlink data transmission, such as a modulation and coding format and location information of an allocated physical resource block. And after the UE resolves the sDCI, receiving downlink data or transmitting uplink data according to the resource configuration information contained in the sDCI.
In a specific implementation, after the current low-latency data transmission is completed, there may be no low-latency data transmission for a long time, and if the UE continuously detects the sDCI, the processing complexity and power consumption may be increased.
In an embodiment of the present invention, in order to further reduce processing complexity and power consumption of the UE, when the downlink control signaling is not detected within a preset time period based on the sTTI configuration information, the sTTI is suspended, and the sTTI configuration information is reserved. The preset duration may include a plurality of subframes, or may include a plurality of sTTI. The number of specific subframes or sTTI is not limited. The preset duration may be configured by a base station.
After suspending the sTTI, the data transmission method further includes: and when low-delay data to be transmitted exist, transmitting indication information for recovering sTTI scheduling to the base station, and detecting a downlink control signaling in a corresponding sTTI according to the sTTI configuration information so as to transmit data.
For example, when the UE has uplink low latency data to send, the UE may indicate that the low latency data is sent to the base station through a Buffer Status Report (BSR), and the UE may detect the dci immediately after sending the corresponding BSR, or detect the dci after receiving indication information that the base station reapplies the sTTI.
After suspending the sTTI, if the base station has downlink low-delay data to be transmitted, the base station can send the indication information reapplying the sTTI to the UE through signaling at the moment, and the UE is indicated to recover the sTTI scheduling.
In an embodiment of the present invention, since the transmission of the Medium Access Control (MAC) Control signaling is faster than the RRC signaling and more reliable than the DCI, the base station may notify the UE to resume the sTTI scheduling by using the MAC layer Control signaling. And after the UE receives the data, the UE immediately detects the sDCI so as to receive the low-delay data in time.
As can be seen from the above, in the data transmission method in the embodiment of the present invention, by setting the time interval information of the application sTTI in the sTTI configuration information sent by the base station, the significant increase of the processing complexity and the power consumption of the UE when applying the sTTI can be effectively avoided.
In order to make those skilled in the art better understand and implement the present invention, the following describes the corresponding devices, computer readable media and user terminal of the above data transmission method in detail.
Referring to fig. 2, an embodiment of the present invention provides a data transmission apparatus 20, where the data transmission apparatus 20 may include: a receiving unit 21, a detecting unit 22 and a data transmitting unit 23. Wherein:
the receiving unit 21 is adapted to receive sTTI configuration information sent by a base station, where the sTTI configuration information includes: length information of an sTTI (transmission time interval) and time interval information applying the sTTI, wherein the length of the sTTI is less than 1 ms;
the detecting unit 22 is adapted to detect a downlink control signaling in a corresponding sTTI based on the sTTI configuration information;
the data transmission unit 23 is adapted to perform data transmission according to the detected downlink control signaling.
In an embodiment of the present invention, the length information of the sTTI includes at least one of the following:
uplink sTTI length information;
downlink sTTI length information.
In a specific implementation, the receiving unit 21 may receive the time interval information to which the sTTI is applied from a radio resource control signaling sent by a base station and a downlink control signaling detected in a corresponding sTTI.
In an embodiment of the present invention, the applying the time interval information of the sTTI includes:
and the base station schedules the number of the sub-frames or the number of the sTTI at the interval of the user terminal twice continuously.
In another embodiment of the present invention, the applying the time interval information of the sTTI includes:
and the base station schedules the period information of the user terminal according to the sTTI, and schedules the position indication information of the user terminal according to the sTTI in each period.
In an embodiment of the present invention, the scheduling, in each period, the location indication information of the ue by the sTTI includes: and scheduling the identification information of the sub-frame or the time slot of the user terminal in each period by the sTTI.
In an embodiment of the present invention, the detecting unit 22 is adapted to detect the downlink control signaling on the subframe or timeslot identified in each period based on the sTTI configuration information.
In an embodiment of the present invention, the detecting unit 22 is adapted to detect the downlink control signaling at a first location in each period based on the sTTI configuration information, where the first location includes: the identified subframe and a first number of subframes, time slots or sTTI behind the identified subframe are continuously preset; or, the identified time slot and the identified time slot are followed by a preset first number of subframes, time slots or sTTI.
In a specific implementation, the sTTI configuration information may further include:
and applying the starting indication information of the sTTI scheduling.
In an embodiment of the present invention, referring to fig. 3, the data transmission apparatus 20 may further include:
the suspending unit 31 is adapted to suspend the sTTI and reserve the sTTI configuration information when the downlink control signaling is not detected within a preset time period based on the sTTI configuration information.
In another embodiment of the present invention, referring to fig. 3, the data transmission apparatus 20 may further include: a transmitting unit 32. The sending unit 32 is adapted to send, after suspending the sTTI, indication information for recovering sTTI scheduling to the base station when there is low-delay data to be sent.
The detecting unit 22 is further adapted to detect the downlink control signaling in the corresponding sTTI according to the sTTI configuration information after the sending unit 32 sends the indication information for recovering the sTTI scheduling to the base station, so as to perform data transmission.
In another embodiment of the present invention, the data transmission unit 23 is further adapted to, after suspending the sTTI, reapply the sTTI and perform data transmission when receiving indication information sent by the base station to reapply the sTTI.
Embodiments of the present invention also provide a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the data transmission method in the above embodiments are executed.
In particular implementations, the computer-readable storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
The embodiment of the present invention further provides a user terminal, where the user terminal includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the data transmission method in the foregoing embodiments when executing the computer instructions.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (20)

1. A method of data transmission, comprising:
receiving sTTI configuration information sent by a base station, wherein the sTTI configuration information comprises: the method comprises the steps of obtaining length information of an sTTI (transmission time interval) and time interval information of a user terminal scheduled by applying the sTTI, wherein the length of the sTTI is less than 1 ms; the time interval information of the user terminal is scheduled by applying the sTTI, and is used for detecting a downlink control signaling;
determining more than two STTIs where downlink control signaling is located based on the sTTI configuration information, detecting the downlink control signaling in the determined sTTI, and transmitting data according to the detected downlink control signaling;
wherein, the adjacent STTI where the downlink control signaling is located is discontinuous; the time interval information for scheduling the user terminal by applying the sTTI comprises the following steps: the base station schedules the number of the sub-frames or the number of the sTTI at intervals of the user terminal twice continuously; or, the base station schedules the period information of the user terminal according to the sTTI, and schedules the position indication information of the user terminal according to the sTTI in each period.
2. The data transmission method of claim 1, wherein the length information of the sTTI comprises at least one of:
uplink sTTI length information;
downlink sTTI length information.
3. The data transmission method of claim 1, wherein the scheduling the position indication information of the user terminal in the sTTI per period comprises: and scheduling the identification information of the sub-frame or the time slot of the user terminal in each period by the sTTI.
4. The data transmission method of claim 3, wherein the determining more than two STTIs where downlink control signaling is located based on the sTTI configuration information, and detecting the downlink control signaling in the determined sTTI comprises:
and detecting the downlink control signaling on the subframe or the time slot identified in each period based on the sTTI configuration information.
5. The data transmission method of claim 3, wherein the determining more than two STTIs where downlink control signaling is located based on the sTTI configuration information, and detecting the downlink control signaling in the determined sTTI comprises:
detecting the downlink control signaling at a first position in each period based on the sTTI configuration information, the first position including: the identified subframe and a first number of subframes, time slots or sTTI behind the identified subframe are continuously preset; or, the identified time slot and the identified time slot are followed by a preset first number of subframes, time slots or sTTI.
6. The data transmission method according to any one of claims 1 to 5, wherein the sTTI configuration information further comprises:
and using the sTTI to schedule the starting indication information of the user terminal.
7. The data transmission method according to any one of claims 1 to 5, further comprising:
and when the downlink control signaling is not detected within a preset time length based on the sTTI configuration information, suspending the sTTI, and reserving the sTTI configuration information.
8. The data transmission method of claim 5, further comprising, after suspending the sTTI:
and when low-delay data to be transmitted exist, transmitting indication information for recovering sTTI scheduling to the base station, and detecting a downlink control signaling in a corresponding sTTI according to the sTTI configuration information so as to transmit data.
9. The data transmission method of claim 5, further comprising, after suspending the sTTI:
and when receiving the indication information which is sent by the base station and used for reapplying the sTTI, reapplying the sTTI and carrying out data transmission.
10. A data transmission apparatus, comprising:
a receiving unit, adapted to receive sTTI configuration information sent by a base station, where the sTTI configuration information includes: the method comprises the steps of obtaining length information of an sTTI (transmission time interval) and time interval information of a user terminal scheduled by applying the sTTI, wherein the length of the sTTI is less than 1 ms; the time interval information of the user terminal is scheduled by applying the sTTI, and is used for detecting a downlink control signaling;
a detection unit, adapted to determine more than two STTIs where downlink control signaling is located based on the sTTI configuration information, and detect the downlink control signaling in the determined sTTI;
the data transmission unit is suitable for transmitting data according to the detected downlink control signaling;
wherein, the adjacent STTI where the downlink control signaling is located is discontinuous; the time interval information for scheduling the user terminal by applying the sTTI comprises the following steps: the base station schedules the number of the sub-frames or the number of the sTTI at intervals of the user terminal twice continuously; or, the base station schedules the period information of the user terminal according to the sTTI, and schedules the position indication information of the user terminal according to the sTTI in each period.
11. The data transmission apparatus of claim 10, wherein the length information of the sTTI comprises at least one of:
uplink sTTI length information;
downlink sTTI length information.
12. The data transmission apparatus of claim 10, wherein the position indication information for scheduling the user terminal in the sTTI per period comprises: and scheduling the identification information of the sub-frame or the time slot of the user terminal in each period by the sTTI.
13. The data transmission apparatus of claim 12, wherein the detecting unit is adapted to detect the downlink control signaling on the identified subframe or slot in each period based on the sTTI configuration information.
14. The data transmission apparatus of claim 12, wherein the detecting unit is adapted to detect the downlink control signaling at a first position in each period based on the sTTI configuration information, the first position comprising: the identified subframe and a first number of subframes, time slots or sTTI behind the identified subframe are continuously preset; or, the identified time slot and the identified time slot are followed by a preset first number of subframes, time slots or sTTI.
15. The data transmission apparatus according to any of claims 10 to 14, wherein the sTTI configuration information further comprises:
and using the sTTI to schedule the starting indication information of the user terminal.
16. The data transmission apparatus according to any one of claims 10 to 14, further comprising:
and the suspension unit is suitable for suspending the sTTI and reserving the sTTI configuration information when the downlink control signaling is not detected in a preset time period based on the sTTI configuration information.
17. The data transmission apparatus of claim 16, further comprising:
the sending unit is suitable for sending indication information for recovering sTTI scheduling to the base station when low-delay data to be sent exists after the sTTI is suspended;
the detecting unit is further adapted to detect the downlink control signaling in the corresponding sTTI according to the sTTI configuration information after the transmitting unit transmits the indication information for recovering the sTTI scheduling to the base station, so as to perform data transmission.
18. The data transmission apparatus of claim 16,
and the data transmission unit is also suitable for reapplying the sTTI and carrying out data transmission when receiving the indication information of reapplying the sTTI sent by the base station after suspending the sTTI.
19. A computer readable storage medium having computer instructions stored thereon, wherein the computer instructions when executed perform the steps of the method of any one of claims 1 to 9.
20. A user terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 9.
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112312428A (en) * 2019-08-01 2021-02-02 中兴通讯股份有限公司 Information monitoring method, terminal and base station
WO2021184140A1 (en) * 2020-03-14 2021-09-23 华为技术有限公司 Information processing method and apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105554892A (en) * 2016-01-14 2016-05-04 珠海市魅族科技有限公司 Resource allocation method and device for LTE network and base station
CN106550459A (en) * 2015-09-18 2017-03-29 中兴通讯股份有限公司 A kind of descending control method and device
CN106714325A (en) * 2016-03-15 2017-05-24 北京展讯高科通信技术有限公司 Wireless communication method and device with variable TTI
CN106797248A (en) * 2014-10-21 2017-05-31 Lg电子株式会社 The method and its equipment of data are sent and received in a wireless communication system
CN106793136A (en) * 2016-05-09 2017-05-31 北京展讯高科通信技术有限公司 User equipment and its data transmission method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3372034B1 (en) * 2015-11-03 2020-12-02 Telefonaktiebolaget LM Ericsson (publ) Methods and apparatus for scheduling in uplink
US10182427B2 (en) * 2015-11-06 2019-01-15 Telefonaktiebolaget Lm Ericsson (Publ) Transmitting and receiving downlink grant and downlink data

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106797248A (en) * 2014-10-21 2017-05-31 Lg电子株式会社 The method and its equipment of data are sent and received in a wireless communication system
CN106550459A (en) * 2015-09-18 2017-03-29 中兴通讯股份有限公司 A kind of descending control method and device
CN105554892A (en) * 2016-01-14 2016-05-04 珠海市魅族科技有限公司 Resource allocation method and device for LTE network and base station
CN106714325A (en) * 2016-03-15 2017-05-24 北京展讯高科通信技术有限公司 Wireless communication method and device with variable TTI
CN106793136A (en) * 2016-05-09 2017-05-31 北京展讯高科通信技术有限公司 User equipment and its data transmission method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Shortened TTI and short processing time - Collection of RAN1 agreements sorted per topic;Ericsson;《3GPP,R1-1709861》;20170519;1-17 *

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