WO2018130146A1 - Procédé de transmission de données et dispositif de transmission de données - Google Patents

Procédé de transmission de données et dispositif de transmission de données Download PDF

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Publication number
WO2018130146A1
WO2018130146A1 PCT/CN2018/071940 CN2018071940W WO2018130146A1 WO 2018130146 A1 WO2018130146 A1 WO 2018130146A1 CN 2018071940 W CN2018071940 W CN 2018071940W WO 2018130146 A1 WO2018130146 A1 WO 2018130146A1
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WO
WIPO (PCT)
Prior art keywords
data
sending
window
transmission
uplink
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PCT/CN2018/071940
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English (en)
Chinese (zh)
Inventor
王莹莹
孙军帅
黄学艳
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
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Publication of WO2018130146A1 publication Critical patent/WO2018130146A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/187—Details of sliding window management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1657—Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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

Definitions

  • the present disclosure relates to the field of mobile communications technologies, and in particular, to a data transmission method and a data transmission device.
  • the data transmission delay mainly includes the protocol stack processing delay and the air interface delay.
  • the air interface delay is mainly the delay caused by the possible air interface hybrid automatic repeat request (HARQ) retransmission.
  • HARQ hybrid automatic repeat request
  • the air interface delay consists of three parts:
  • BSR buffer status report
  • the delay caused by HARQ and the delay between uplink resource allocation and uplink data transmission are fixed, and occupy a certain proportion in the overall transmission delay.
  • the HARQ feedback corresponding to the downlink data and the time interval between the uplink data and the corresponding HARQ feedback are usually fixed.
  • Table 1 below shows the feedback timing relationship of the time division duplex (TDD) downlink HARQ.
  • TDD time division duplex
  • Table 2 gives an example of the timing relationship of TDD uplink data and corresponding HARQ feedback in an LTE system. It can be seen that the time interval of uplink data and HARQ feedback is fixed regardless of the frame structure configuration.
  • the uplink or the downlink is usually a fixed HARQ feedback time
  • all terminals need to be processed according to the timing relationship.
  • the technical problem to be solved by the embodiments of the present disclosure is to provide a data transmission method and a data transmission apparatus for changing a fixed timing relationship of data transmission, and providing technical support for reducing data delay.
  • the data transmission method provided by the embodiment of the present disclosure includes:
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • a first receiving unit configured to receive first data, and record a first sending time of the first data
  • a first determining unit configured to determine, according to the first sending time, a length of a preset sending window, and a maximum delay between the second data and the first data, a first sending window of the second data
  • a first sending unit configured to send the second data in the first sending window
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • a sending unit configured to send the first data, and record a first sending time of the first data
  • a first determining unit configured to determine, according to the first sending time, a length of a preset sending window, and a maximum delay between the second data and the first data, a first sending window of the second data
  • a first receiving unit configured to receive the second data in the first sending window
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • a data transmission apparatus includes a processor, a transceiver, and a memory;
  • the processor is configured to read a program in the memory and perform the following process:
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • First uplink data corresponding to an uplink grant information
  • the transceiver is configured to receive and transmit data
  • the memory is used to store data used by the processor to perform operations.
  • a data transmission apparatus includes a processor, a transceiver, and a memory;
  • the processor is configured to read a program in the memory and perform the following process:
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • First uplink data corresponding to an uplink grant information
  • the transceiver is configured to receive and transmit data
  • the memory is used to store data used by the processor to perform operations.
  • a non-transitory computer readable storage medium stores computer readable instructions executable by a processor, when the computer readable instructions are executed by a processor, the processor performs the following operating:
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • a non-transitory computer readable storage medium stores computer readable instructions executable by a processor, when the computer readable instructions are executed by a processor, the processor performs the following operating:
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • the data transmission method and the data transmission apparatus provided by the embodiments of the present disclosure reduce the air interface delay from shortening the HARQ feedback time and reducing the uplink grant to the uplink data transmission interval.
  • the embodiment of the present disclosure can flexibly select the feedback time of the HARQ and the transmission time of the uplink MAC PDU according to the processing capability of the terminal and the base station, so as to reduce the low latency and high reliability.
  • Technical support for data latency of the business may also perform fast scheduling or fast feedback for low-latency and high-reliability services according to requirements, and may not open fast scheduling or fast feedback functions for common services, so as to achieve backward compatibility with common services.
  • FIG. 1 is a schematic flowchart diagram of a data transmission method according to some embodiments of the present disclosure
  • FIG. 2 is a schematic flowchart diagram of another data transmission method according to some embodiments of the present disclosure.
  • FIG. 3 is a schematic diagram of a transmission window of downlink HARQ feedback in some embodiments of the present disclosure
  • FIG. 4 is a schematic diagram of a transmission window of uplink HARQ feedback in some embodiments of the present disclosure
  • FIG. 5 is a schematic diagram of a transmission window of uplink data in some embodiments of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another data transmission apparatus according to some embodiments of the present disclosure.
  • system and “network” are used interchangeably herein.
  • the term “and/or” herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone.
  • the character "/" in this article generally indicates that the contextual object is an "or” relationship.
  • B corresponding to A means that B is associated with A, and B can be determined from A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the form of the base station is not limited, and may be a Macro Base Station, a Pico Base Station, a Node B (a name of a 3G mobile base station), an enhanced base station (eNB), and a home.
  • Enhanced base station Femto eNB or Home eNode B or Home eNB or HeNB
  • relay station access point
  • RRU Remote Radio Unit
  • RRH Remote Radio Head
  • 5G mobile communication Network side nodes in the system such as a central unit (CU, Central Unit) and a distributed unit (DU, distributed unit).
  • the terminal may be a mobile phone (or mobile phone), or other device capable of transmitting or receiving wireless signals, including user equipment (UE), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop Computers, cordless phones, wireless local loop (WLL) stations, CPE (Customer Premise Equipment) capable of converting mobile signals into WiFi signals, mobile smart hotspots, smart home appliances, or other non-human operations can spontaneously Equipment for communication in a mobile communication network, etc.
  • UE user equipment
  • PDA personal digital assistant
  • WLL wireless local loop
  • CPE Customer Premise Equipment
  • the mobile communication system in the related art is usually a fixed HARQ feedback time whether it is uplink or downlink, and there is also a fixed time interval between the uplink grant and the uplink data transmission.
  • the timing relationship of the related art limits the delay of the air interface.
  • the HARQ feedback needs to wait for the same time regardless of the service.
  • the embodiments of the present disclosure propose a new data transmission method for low-latency and high-reliability services from the aspects of shortening the HARQ feedback delay and reducing the time interval between the uplink grant and the uplink scheduling, and reducing the data delay.
  • a data transmission method provided by some embodiments of the present disclosure may be applied to a base station side or a terminal side, including:
  • Step 11 Receive first data, and record a first sending time of the first data.
  • the first data may be service data, and may also be uplink authorization information.
  • time may be represented by the location of the time domain transmission resource that transmitted the data.
  • the first transmission time of the first data may be represented by the location of the time domain transmission resource (such as the subframe of the LTE system, the OFDM symbol) where the first data is located.
  • the time domain transmission resource such as the subframe of the LTE system, the OFDM symbol
  • different communication systems may adopt different time domains of different specifications. Transfer resources.
  • time can also be expressed in other ways, such as system time.
  • Step 12 Determine a first sending window of the second data according to the first sending time, the length of the preset sending window, and the maximum delay between the second data and the first data.
  • the second data is feedback information of the first service data, that is, HARQ feedback information, such as ACK/NACK information indicating success or failure of data reception.
  • HARQ feedback information such as ACK/NACK information indicating success or failure of data reception.
  • the second data is the first uplink data corresponding to the first uplink authorization information.
  • the base station side and the terminal side preset a maximum delay between the first data and the second data, and preset a length of the transmission window, thereby determining a specific transmission window. position.
  • the lower boundary of the first sending window of the second data may be determined according to the formula K+NL
  • the upper boundary of the first sending window of the second data is determined according to the formula K+N, where K represents the first The transmission time, N represents the maximum delay between the second data and the first data, and L represents the length of the transmission window.
  • the base station may dynamically configure the maximum delay between the first data and the second data by means of signaling messages, such as sending MAC layer signaling or RRC signaling, and pre-setting The length of the send window.
  • the base station may carry, in the first uplink grant information, parameters such as a length of the sending window and a maximum delay between the second data and the first data.
  • Step 13 Send the second data in the first sending window.
  • some embodiments of the present disclosure change the fixed timing relationship of the HARQ feedback in the communication system of the related art, or change the fixed timing relationship between the uplink grant and the uplink transmission, whereby the base station device or the terminal device can according to itself Processing capability, sending second data at the appropriate time in the transmission window, providing technical support for reducing data latency.
  • the second data may be immediately transmitted or transmitted in the first half of the transmission window.
  • some embodiments of the present disclosure may decide whether to perform the transmission scheme shown in FIG. 1 by the form of a function switch. For example, after the foregoing step 11, some embodiments of the present disclosure may further determine whether the first service corresponding to the first data is configured with a low delay transmission function: if yes, enter the steps 12-13 to pass the first The sending window sends the second data; otherwise, the first sending time corresponding to the first sending time is determined according to the preset fixed feedback timing relationship, and the second data is sent when the first sending time arrives.
  • the first sending time and the sending of the second data may be determined according to a similar implementation manner of the related art, and details are not described herein again.
  • the second data is the feedback information of the first service data.
  • the feedback information of the first data may be sent multiple times in the first transmission window.
  • the feedback information of the first data may be carried on a pre-configured transmission resource in the first transmission window.
  • the transmission resource here may be a time-frequency domain resource configured by the base station through the signaling message.
  • the feedback information of the first data may include ACK/NACK information indicating success or failure of reception of currently fed back data, and also includes The indication information of the currently fed back data, for example, the ACK/NACK information indicating the current data is the first data.
  • the foregoing indication information may be the HARQ process ID corresponding to the currently fed back data, and may also be identified by the sending sequence corresponding to the currently fed back data.
  • the second data is the first uplink data corresponding to the first uplink authorization information.
  • the first uplink grant information may include the uplink grant resource, the modulation and coding policy (MCS) number, the transmit power control (TPC) parameter, and the like, and may include the uplink HARQ process ID and the redundancy. Version (RV) information.
  • the base station may further carry, in the first uplink authorization information, parameters such as a length of the sending window and a maximum delay between the second data and the first data, for determining the sending window in step 12.
  • the first uplink data When the first uplink data is sent in the foregoing step 13, the first uplink data may be sent in the first sending window, and the uplink HARQ process ID may be sent explicitly or implicitly.
  • the explicit transmission means that the uplink HARQ process number is directly carried in the packet of the first uplink data that is sent in the first transmission window.
  • the implicit transmission means that the uplink HARQ process number is not directly carried in the first uplink data packet, but the uplink HARQ process ID is indicated by other means. For example, different demodulation reference signals may be preset.
  • the number of occupied symbols corresponds to different HARQ processes, and when the first uplink data is sent, the NDMRS corresponding to the uplink HARQ process ID is sent, so that when receiving, the base station can demodulate the MAC PDU according to the physical layer. Determine the corresponding HARQ process ID.
  • some embodiments of the present disclosure further provide a data transmission method for receiving the second data sent in the foregoing step 13.
  • the flow of the method is as shown in FIG. 2 .
  • the data transmission method includes:
  • Step 21 Send the first data, and record the first sending time of the first data.
  • Step 22 Determine a first sending window of the second data according to the first sending time, the length of the preset sending window, and the maximum delay between the second data and the first data.
  • the second data is feedback information of the first service data; when the first data is the first uplink authorization information, the second data is The first uplink data corresponding to the uplink grant information.
  • Determining the first transmission window may include: determining a lower boundary of the first transmission window of the second data according to the formula K+NL, and determining an upper boundary of the first transmission window of the second data according to the formula K+N, Where K represents the first transmission time, N represents the maximum delay between the second data and the first data, and L represents the length of the transmission window.
  • the base station may carry the length of the sending window and the maximum delay between the second data and the first data in the first uplink grant information.
  • the terminal parses the length of the sending window and the maximum delay parameter according to the first uplink grant information, and further according to the first sending time, the length of the preset sending window, and A maximum delay between the second data and the first data, and a first transmission window of the second data is calculated.
  • Step 23 Receive the second data in the first sending window.
  • some embodiments of the present disclosure implement receiving the second data sent by the communication peer end in the first sending window, and implementing data receiving processing.
  • the feedback information of the first data is further received on the pre-configured transmission resource in the first transmission window.
  • the feedback information of the first data specifically includes: indication information indicating current feedback data; ACK/NACK information indicating success or failure of reception of current feedback data.
  • the indication information used to indicate the current feedback data may be a HARQ process ID corresponding to the current feedback data; or a transmission order identifier corresponding to the current feedback data.
  • the first uplink grant information includes a transmission resource with an uplink grant, an uplink HARQ process ID, and redundancy version information; in the foregoing step 23, further receiving the display And determining, by the uplink or the uplink, the uplink HARQ process ID, and determining the uplink grant corresponding to the uplink HARQ process ID, and parsing the first uplink data according to the uplink resource and the parameter of the uplink grant.
  • some embodiments of the present disclosure may further add a determining step after step 21 to determine whether to adopt the receiving scheme shown in FIG. 2. For example, after the foregoing step 21, some embodiments of the present disclosure may further determine whether the first service corresponding to the first data is configured with a low delay transmission function: if yes, enter the steps 22-23 to pass the first The receiving window receives the second data; otherwise, determining the first sending time corresponding to the first sending time according to the preset fixed feedback timing relationship, and receiving the second data when the first sending time arrives.
  • the first sending time and the receiving of the second data may be determined according to a similar implementation manner of the related art, and details are not described herein again.
  • Some embodiments of the present disclosure can shorten the delay of certain services (such as low-latency and high-reliability services) by using a HARQ feedback mechanism based on a transmission window.
  • a HARQ feedback mechanism based on a transmission window.
  • the following describes an LTE system as an example.
  • the frame position is used to characterize.
  • the network side and the terminal side may preset an upper limit N DL of the interval between the subframe M DL and the downlink subframe K DL corresponding to the HARQ feedback (That is, the maximum delay between the second data and the first data) and the transmission window length L DL of the HARQ feedback.
  • the preset parameters may be configured in advance at the base station and the terminal, or may be configured by the base station in advance through signaling messages.
  • the base station can receive the HARQ feedback information in the above transmission window.
  • the network side and the terminal side may preset an upper limit N UL of the interval between the subframe M UL and the subframe K UL corresponding to the HARQ feedback (ie, maximum delay between a first data and the second data) and a transmission window length L UL HARQ feedback.
  • the preset parameters may be configured in advance at the base station and the terminal, or may be configured by the base station in advance through signaling messages.
  • the terminal may receive the HARQ feedback information in the above transmission window.
  • the above scheme extends the fixed HARQ feedback time to a time window of HARQ feedback. If the terminal or base station has faster processing capability, the terminal/base station may be allowed to transmit HARQ feedback in advance within the HARQ feedback time window.
  • the above scheme gives the time window range of the HARQ feedback time, and the specific HARQ feedback time is not determined.
  • the present scheme makes the air interface transmission time HARQ feedback time point of different services of different users flexible.
  • the terminal and the base station can report the HARQ feedback result as soon as possible according to the processing capability of the terminal, and feedback the HARQ information in time to reduce the data delay.
  • the reliability of the transmission of the feedback information needs to be improved, for example, using the HARQ feedback information to repeat in the transmission window multiple times. Send by sending method.
  • the transmission mechanism of the HARQ feedback can be increased.
  • a fixed transmission resource may be configured in advance in the transmission window of the HARQ feedback to carry the HARQ feedback information.
  • the configuration of the specific transmission resource can be implemented by MAC layer signaling or RRC signaling.
  • some embodiments of the present disclosure may increase data corresponding to the HARQ feedback in the feedback content.
  • the correspondence between the HARQ feedback and the data can be marked in multiple ways: one is to identify by the HARQ process ID, and the other is to identify the HARQ information that needs to be fed back in the order in which the corresponding data is sent. The sequential identification of the secondary feedback data.
  • the above two marking methods are merely illustrative, and the disclosure is not limited thereto.
  • the time interval between uplink resource allocation and uplink data transmission is usually fixed.
  • the uplink grant information received by the subframe n corresponds to the uplink data on the air interface subframe n+k, and the interval between the uplink grant and the uplink data is a fixed interval.
  • some embodiments of the present disclosure provides a data transfer method, assuming that the uplink grant in subframe K DCI information received, the predetermined uplink data transmission sub-frame among sub-frame K DCI
  • the upper limit of the interval N UL that is, the maximum delay between the second data and the first data
  • the length L DCI of the transmission window of the uplink data then, as shown in FIG. 5, the time of the transmission window of the uplink data can be calculated.
  • the base station may configure a length of the uplink data transmission window for the terminal when transmitting the uplink authorization information.
  • the length of the sending window and the maximum delay between the second data and the first data may be carried in the uplink authorization information. And other parameters.
  • the terminal may extract the foregoing parameters from the uplink grant information, and further determine the sending window to perform uplink data transmission.
  • the foregoing solution changes the uplink data to the non-fixed timing transmission, and becomes the uplink asynchronous HARQ.
  • the uplink HARQ process ID and the redundancy version (RV) information may be added to the uplink authorization information sent by the base station.
  • the terminal explicitly or implicitly indicates the uplink HARQ process ID in the sent uplink data. In this way, when receiving the uplink data, the base station first determines whether there is uplink data, and if so, parses the uplink transmission resource and parameters carried in the uplink grant information corresponding to the HARQ process ID.
  • Some embodiments of the present disclosure further increase the configuration of fast HARQ feedback and fast uplink scheduling functions, as different services have different requirements for delay. Only the above functions are enabled, and some embodiments of the present disclosure perform the fast HARQ feedback processing and the fast uplink data scheduling processing according to the foregoing process of FIG. 1 or FIG. 2; if the foregoing functions are not enabled, the implementation may be implemented according to the prior art implementation manner. HARQ feedback or uplink data scheduling processing with fixed timing relationships. With this feature configuration, backward compatibility with existing solutions can be achieved.
  • a data transmission apparatus provided by some embodiments of the present disclosure includes:
  • a first receiving unit 61 configured to receive first data, and record a first sending time of the first data
  • the first determining unit 62 is configured to determine a first sending window of the second data according to the first sending time, a length of the preset sending window, and a maximum delay between the second data and the first data;
  • a first sending unit 63 configured to send the second data in the first sending window
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • the data transmission device may be configured on the base station side, where the first data is the first service data (specifically, the uplink service data of the first service), and the second data is the first service data. Feedback information.
  • the data transmission device may be configured on the terminal side.
  • the first data is the first service data (specifically, the downlink service data of the first service)
  • the second data is the feedback of the first service data.
  • the first data is the first uplink authorization information
  • the second data is the first uplink data corresponding to the first uplink authorization information.
  • the first determining unit is specifically configured to determine a lower boundary of the first sending window of the second data according to the formula K+NL, and determine the first sending window of the second data according to the formula K+N a boundary, where K represents the first transmission time, N represents the maximum delay between the second data and the first data, and L represents the length of the transmission window.
  • the first sending unit is further configured to: in the first sending window, send the feedback information of the first data multiple times, and The feedback information of the first data is carried on a pre-configured transmission resource in the first transmission window.
  • the feedback information of the first data may include: indication information indicating current feedback data; ACK/NACK information indicating success or failure of reception of current feedback data, and the like.
  • the indication information for indicating the current feedback data may include: a HARQ process ID corresponding to the current feedback data; or a transmission sequence identifier corresponding to the currently fed back data.
  • the first uplink authorization information includes an uplink authorized transmission resource, an uplink HARQ process ID, and redundancy version information; the first sending unit is further used. Transmitting the first uplink data in the first sending window, and explicitly or implicitly sending the uplink HARQ process ID.
  • the above data transmission device further includes:
  • a determining unit configured to: after the first receiving unit receives the first data, and records the first sending time of the first data, determining whether the first service corresponding to the first data is configured with a low delay transmission function: if yes, Then triggering the first determining unit, otherwise triggering the second determining unit;
  • a second determining unit configured to determine, according to a preset fixed feedback timing relationship, a first sending time corresponding to the first sending time
  • a second sending unit configured to send the second data when the first sending time arrives.
  • some embodiments of the present disclosure further provide another data transmission apparatus, including:
  • the sending unit 71 is configured to send the first data, and record the first sending time of the first data.
  • the first determining unit 72 is configured to determine a first sending window of the second data according to the first sending time, a length of the preset sending window, and a maximum delay between the second data and the first data;
  • the first receiving unit 73 is configured to receive the second data in the first sending window.
  • the second data is feedback information of the first service data when the first data is the first service data, and the second data is the first data when the first data is the first uplink authorization information.
  • the first uplink data corresponding to the uplink grant information.
  • the data transmission device may be configured on the base station side, where the first data is the first service data (specifically, the uplink service data of the first service), and the second data is the first service data.
  • the first data is the first uplink authorization information
  • the second data is the first uplink data corresponding to the first uplink authorization information.
  • the data transmission device may be configured on the terminal side.
  • the first data is the first service data (specifically, the downlink service data of the first service)
  • the second data is the feedback of the first service data. information.
  • the first determining unit is specifically configured to determine a lower boundary of the first sending window of the second data according to the formula K+NL, and determine the first sending window of the second data according to the formula K+N a boundary, where K represents the first transmission time, N represents the maximum delay between the second data and the first data, and L represents the length of the transmission window.
  • the first receiving unit 73 when the first data is the first service data, the first receiving unit 73 further receives the first data on a pre-configured transmission resource in the first sending window.
  • Feedback information specifically includes: indication information indicating current feedback data; ACK/NACK information indicating success or failure of reception of current feedback data.
  • the indication information used to indicate the current feedback data may be a HARQ process ID corresponding to the current feedback data; or a transmission order identifier corresponding to the current feedback data.
  • the first uplink grant information includes a transmission resource with an uplink grant, an uplink HARQ process ID, and redundancy version information; the first receiving unit 73 further receives The uplink HARQ process ID is explicitly or implicitly transmitted, and the uplink grant corresponding to the uplink HARQ process ID is determined, and the first uplink data is parsed according to the uplink resource and the parameter of the uplink grant.
  • the above data transmission device may further include the following units:
  • a determining unit configured to: after the first sending time of the first data is sent by the sending unit, determining whether the first service corresponding to the first data is configured with a low delay transmission function: if yes, triggering a first determining unit, otherwise triggering the second determining unit;
  • a second determining unit configured to determine, according to a preset fixed feedback timing relationship, a first sending time corresponding to the first sending time
  • a second sending unit configured to receive the second data when the first sending time arrives.
  • the data transmission method and the data transmission apparatus can reduce the air interface delay from shortening the HARQ feedback time and reducing the uplink grant to the uplink data transmission interval.
  • the embodiment of the present disclosure can flexibly select the feedback time of the HARQ and the sending time of the uplink MAC PDU according to the processing capability of the terminal and the base station, so as to reduce the low latency and high reliability.
  • Technical support for data latency of the business may also perform fast scheduling or fast feedback for low-latency and high-reliability services according to requirements, and may not open fast scheduling or fast feedback functions for common services, so as to achieve backward compatibility with common services.

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

Abstract

La présente invention concerne un procédé de transmission de données et un dispositif de transmission de données. Le procédé de transmission de données consiste à : recevoir des premières données et enregistrer un premier temps de transmission des premières données ; déterminer une première fenêtre de transmission de secondes données en fonction du premier temps de transmission, une longueur prédéfinie d'une fenêtre de transmission, et un retard temporel maximal entre des secondes données et les premières données ; et envoyer les secondes données à l'intérieur de la première fenêtre de transmission, les secondes données étant des informations de rétroaction des premières données de service dans le cas où les premières données sont des premières données de service, et les secondes données étant des premières données de liaison montante correspondant aux premières informations d'autorisation de liaison montante si les premières données sont des premières informations d'autorisation de liaison montante.
PCT/CN2018/071940 2017-01-13 2018-01-09 Procédé de transmission de données et dispositif de transmission de données WO2018130146A1 (fr)

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