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WO2018027588A1 - Procédé de transmission de données et appareil de communication - Google Patents

Procédé de transmission de données et appareil de communication Download PDF

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Publication number
WO2018027588A1
WO2018027588A1 PCT/CN2016/094233 CN2016094233W WO2018027588A1 WO 2018027588 A1 WO2018027588 A1 WO 2018027588A1 CN 2016094233 W CN2016094233 W CN 2016094233W WO 2018027588 A1 WO2018027588 A1 WO 2018027588A1
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WIPO (PCT)
Prior art keywords
data
retransmission
scheduling time
minimum scheduling
time units
Prior art date
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PCT/CN2016/094233
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English (en)
Chinese (zh)
Inventor
张长
周国华
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2016/094233 priority Critical patent/WO2018027588A1/fr
Priority to CN201680088061.5A priority patent/CN109565368B/zh
Publication of WO2018027588A1 publication Critical patent/WO2018027588A1/fr
Anticipated expiration legal-status Critical
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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

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.
  • the uplink data and the downlink data in the long term evolution (LTE) system are respectively carried by a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH).
  • PUSCH physical uplink shared channel
  • PDSCH physical downlink shared channel
  • AMC adaptive modulation and coding
  • HARQ hybrid automatic repeat request
  • the AMC is a process of determining a modulation and coding scheme (MCS) of data transmission according to channel state information (CSI), wherein the CSI is estimated based on reference signals (RS) measurements.
  • MCS modulation and coding scheme
  • the base station For uplink communication, the base station first estimates the uplink CSI according to the RS measurement sent by the user equipment (UE), then determines the MCS of the uplink data communication according to the CSI, and finally notifies the UE by using the downlink control channel; and for the downlink communication, the base station first sends the uplink communication.
  • the RS is used by the UE to estimate the downlink CSI and report the downlink CSI to the base station.
  • the base station determines the MCS of the downlink data communication according to the obtained CSI.
  • the PUSCH and PDSCH of the current LTE system generally affect the selection of the MCS by controlling the initial block error rate (IBLER) target value (for example, 10%).
  • HARQ is a technology that combines forward error correction (FEC) and automatic repeat request (ARQ).
  • FEC forward error correction
  • ARQ automatic repeat request
  • the second communication device can correct part of the error data through FEC technology, for errors that cannot be corrected.
  • the data packet the second communication device requests the first communication device to retransmit the data of the original transport block (TB).
  • TB transport block
  • the performance requirements of the service include three dimensions: transmission rate, transmission delay, and transmission reliability.
  • the existing broadband system design is more about how to improve the transmission rate and transmission reliability.
  • HARQ is a technology to effectively improve the transmission rate under the premise of ensuring transmission reliability, but the introduction of HARQ is sacrificed to some extent.
  • the transmission delay For services with higher transmission rate requirements, transmission delay requirements, and transmission reliability requirements, such as real-time video services, the existing HARQ mechanism cannot meet the requirements of these three aspects at the same time.
  • Embodiments of the present invention provide a data transmission method and a communication device to achieve a relative balance between a transmission rate, a transmission delay, and a transmission reliability.
  • a data transmission method comprising: transmitting, at a m consecutive minimum scheduling time unit, initial transmission data of a first data by a first process, where the m is a positive integer; receiving Negative acknowledgement information (NACK) of the first data and retransmission resource indication, wherein the retransmission resource indication includes information indicating n, and n is used to determine a minimum required to transmit retransmission data of the first data a number of scheduling time units, where n is a positive integer; determining retransmission data of the first data according to a redundancy version (RV) and n; transmitting, by the first process, retransmission of the determined first data data.
  • NACK Negative acknowledgement information
  • RV redundancy version
  • the above data transmission method improves the rate of data transmission by using the HARQ transmission mechanism by retransmission on demand, thereby achieving a relative balance between transmission rate, transmission delay and transmission reliability.
  • the data transmission method is applicable to data transmission of downlink data transmission, uplink data transmission, or device to device (D2D).
  • D2D device to device
  • the method in downlink data transmission, the method It can be performed by the base station; in uplink data transmission or D2D data transmission, the method can be performed by the terminal.
  • the retransmission data of the first data is sent by the first process by: transmitting retransmission data of the first data according to n minimum scheduling time units.
  • the retransmission data of the first data is transmitted by the first process on the n consecutive minimum scheduling time units; and the set of m consecutive data of the retransmission data of the first data is transmitted.
  • the second data is sent by the second process on the mn consecutive minimum scheduling time units in the minimum scheduling time unit, where the second process is an adjacent process of the first process, where n ⁇ m.
  • information indicative of at least one of n and RV may be transmitted such that the receiving end may know the information of n and/or RV, thereby increasing the robustness of the system.
  • the retransmission data of the first data is transmitted by the first process on the k consecutive minimum scheduling time units, and the set of m consecutive data of the retransmission data of the first data is transmitted.
  • the second data is sent by the second process on the mk consecutive minimum scheduling time units in the minimum scheduling time unit, where the second process is an adjacent process of the first process, k ⁇ m.
  • the information indicating k can be sent so that the receiving end can know the information of k, thereby increasing the robustness of the system.
  • the above several design schemes can be applied to the data transmission scenario using the synchronous HARQ mechanism.
  • the retransmission resources saved in one process are shared with the initial data of other processes or the data is retransmitted. Therefore, the time domain resources can be fully utilized to transmit useful data, which is beneficial to improve the reachability rate and avoid conflicts between different packets and feedback.
  • asynchronous HARQ while transmitting the initial data of the first data or transmitting the retransmission data of the first data, or transmitting the initial data of the first data or transmitting the retransmission of the first data before the data, information indicating the process number of the first process may be sent, so that the receiving end can learn the process information and increase the robustness of the system.
  • At least one of m and RV may also be sent to the receiving end.
  • m is variable in order to increase the coding gain in a narrowband scene.
  • information such as m, n, k, RV, and process number can be passed through control information.
  • the predetermined rule may be, for example, preferentially saving the first process.
  • the retransmission resource is shared with the HARQ process with the newly transmitted data and is preferentially shared to the prior process; optionally, if the adjacent process of the first process is retransmitted, according to the retransmission needs of the adjacent process, The process of using more resources is used as a retransmission of the first process itself if the adjacent process does not need the remaining retransmission resources of the first process.
  • the remaining retransmission resources of the first process may be arranged in the m where the remaining retransmission resources are located.
  • the preceding one of the consecutive minimum scheduling time units, when the second process is the subsequent process of the first process, the remaining retransmission resources of the first process may be arranged in the m consecutive minimum of the remaining retransmission resources. Scheduled later in the time unit.
  • the resource information used by the second process may be further notified to the second communication device, thereby making the system more robust.
  • the second aspect further provides a data transmission method, including: receiving initial data of the first data, where the initial data of the first data is in m consecutive Data transmitted by the first process on the minimum scheduling time unit, wherein the m is a positive integer; the NACK and the retransmission resource indication of the first data are sent, wherein the retransmission resource indication includes an indication n Information, n for determining the number of minimum scheduling time units required to transmit the retransmission data of the first data; receiving retransmission data of the first data, wherein the retransmission data of the first data is passed The first process sends and is determined according to the redundancy version and n.
  • the above data transmission method improves the rate of data transmission by using the HARQ transmission mechanism by retransmission on demand, thereby achieving a relative balance between transmission rate, transmission delay and transmission reliability.
  • the data transmission method is applicable to data transmission of downlink data transmission, uplink data transmission, or device to device (D2D).
  • the method in uplink data transmission, the method can be performed by a base station; in downlink data transmission or D2D data transmission, the method can be performed by a terminal.
  • the indication information of n may be, for example, an index value for indicating n, or may be the value of n itself.
  • the NACK feedback is performed through the existing ACK/NACK signal format, and the retransmission resource indication is carried by the control information, such as the downlink control information or the uplink control information; or, the existing ACK/NACK may also be used.
  • the signal format is extended based on the existing ACK/NACK signal to carry the retransmission resource indication.
  • n can be determined based on the characteristics of the received signal.
  • information indicative of at least one of n and RV is received.
  • retransmission data of the first data transmitted by the first process is received on k consecutive minimum scheduling time units; and the set of m of retransmitted data of the first data is transmitted Receiving, by the mk consecutive minimum scheduling time units in the consecutive minimum scheduling time units, the second data sent by the second process, where the second process is an adjacent process of the first process, k ⁇ m, the k is obtained based on the n-transform.
  • information indicating k can also be received.
  • the retransmission resources saved in one process are shared with the initial data of other processes or the data is retransmitted, so that the time domain resources can be fully utilized to transmit the useful data. It is beneficial to improve the reachability rate and avoid conflicts between different packets and feedback.
  • asynchronous HARQ while receiving the initial data of the first data or receiving the retransmission data of the first data, or receiving the initial data of the first data or receiving the retransmission of the first data Before the data, information indicating the process number of the first process may be received, so that the receiving end can learn the process information and increase the robustness of the system.
  • an embodiment of the present invention provides a communication device having the functions in the method for implementing the above first aspect.
  • the above functions can be implemented by hardware or by executing corresponding software through hardware.
  • the above hardware or software includes one or more modules corresponding to the above functions.
  • the communication device may include a processor and a transceiver in its structure.
  • an embodiment of the present invention further provides a communication device having the functions in the method for implementing the foregoing second aspect.
  • the above functions can be implemented by hardware or by executing corresponding software through hardware.
  • the above hardware or software includes one or more modules corresponding to the above functions.
  • the communication device may include a receiver and a transmitter in its structure.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions used in the communication device of the third aspect, which includes a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the communication device of the fourth aspect, which includes a program designed to perform the above aspects.
  • FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of data transmission by using a HARQ transmission mechanism according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic timing diagram of a HARQ process according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of timing of a HARQ process according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of timing of a HARQ process according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a communication apparatus according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a wireless communication system to which the technical solution of the embodiment of the present invention is applicable.
  • the communication system in the communication system as described in FIG. 1, includes at least one base station and a plurality of terminals.
  • the communication system can be applied to long term evolution (LTE) and future-oriented communication technologies and the like. As long as the communication system faces a problem similar to that mentioned in the background of the present application, the technical solution provided by the embodiment of the present invention is applicable.
  • the system architecture and the service scenario described in the embodiments of the present invention are for the purpose of more clearly illustrating the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the communication system in the embodiment of the present invention may be, for example, LTE or 5G.
  • the base station mentioned in the embodiment of the present invention is a device deployed in a radio access network to provide a wireless communication function for a terminal.
  • the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the name of a device having a base station function may be different, for example, in an LTE system, referred to as an evolved Node B (eNB or eNodeB).
  • eNB evolved Node B
  • eNodeB evolved Node B
  • the above-mentioned devices for providing wireless communication functions to terminals are collectively referred to as base stations.
  • the terminals involved in the embodiments of the present invention may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem.
  • the terminal may also be referred to as a mobile station (MS), user equipment, terminal equipment, and may also include a subscriber unit (uniscriber uni t), a cellular phone (cellular phone), and a smart device.
  • Smart phone wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem (modem), handheld, laptop computer, cordless phone ( Cordless phone) or wireless local loop (WLL) station, machine type communication (MTC) terminal, and the like.
  • PDA personal digital assistant
  • modem modem
  • WLL wireless local loop
  • MTC machine type communication
  • the flow of data transmission using the HARQ transmission mechanism is as shown in FIG. 2.
  • the information bit sequence is subjected to channel coding to generate a coded bit sequence, and the coded bit sequence is stored in the HARQ buffer;
  • the transmission time is obtained according to a redundancy version (RV), and the coded bit sequence line rate matching is obtained from the HARQ buffer to obtain a physical channel bit sequence;
  • the physical channel bit sequence is modulated to generate a physical channel symbol sequence; and the physical channel symbol sequence is obtained.
  • the resource mapping is performed and mapped to the corresponding time-frequency resource for transmission.
  • an embodiment of the present invention provides a data transmission method, which can be applied to a scenario in which a data transmission is performed by using a HARQ transmission mechanism.
  • the method may include:
  • the first communications device sends the first data of the first data by using the first process on the m consecutive minimum scheduling time units.
  • the minimum scheduling time unit can be understood as the smallest unit that implements scheduling in the time domain, and can be, for example, a transmission time interval (TTI).
  • the first communication device sends data through the HARQ process.
  • the initial data of the first data is sent by m consecutive minimum scheduling time units, where m is a positive integer, for example, may be 4.
  • m may be a preset value, and the specific value of m is not limited in the embodiment of the present invention.
  • the HARQ process number is 0-2
  • the minimum scheduling time unit is numbered from 1, and the minimum scheduling time unit indicated by the hatching indicates data transmission.
  • the data is retransmitted.
  • the first process is the HARQ process 0.
  • the minimum scheduled time unit numbered 1-4 is the initial data of the first data.
  • 4 or FIG. 5 can be regarded as data transmission using a synchronous HARQ mechanism (hereinafter referred to as synchronous HARQ), and FIG. 6 can be regarded as data transmission using an asynchronous HARQ mechanism (hereinafter referred to as asynchronous HARQ).
  • synchronous HARQ synchronous HARQ
  • asynchronous HARQ asynchronous HARQ mechanism
  • the initial data of the first data can be controlled by the RV, according to the RV Obtaining the initial data of the first data in the HARQ buffer of the first process for rate matching, obtaining a physical channel bit sequence, modulating the physical channel bit sequence into a physical channel symbol sequence, and then mapping the physical channel symbol sequence to the m minimum
  • the time-frequency resource corresponding to the scheduling time unit is sent out.
  • the second communication device receives the initial data of the first data and performs decoding, and sends a NACK and a retransmission resource indication.
  • the second communication device performs decoding after receiving the initial transmission data of the first data, generates a positive acknowledgment information ACK if the decoding is successful, and generates a negative acknowledgment information NACK if the decoding fails.
  • the above ACK or NACK is collectively referred to as reception confirmation information.
  • the embodiment of the present invention mainly solves how to retransmit in the case of decoding failure. Therefore, after decoding, the second communication device feeds back NACK to the first communication device.
  • the second communication device may further feed back a retransmission resource indication, where the retransmission resource indication includes indication information of n, where n is used to determine a minimum scheduling time required to transmit the retransmission data of the first data.
  • the number of cells where n can be any integer greater than 0, for example, n can be equal to m, can be less than m, or can be greater than m.
  • the indication information of n may be in various forms, for example, may be an index value for indicating n, or may be an n value itself, as long as the first communication device can be made aware of n.
  • the NACK and the retransmission resource indication can be sent by one message or by different messages, for example, NACK feedback through an existing ACK/NACK signal format, through control information, such as downlink control information or uplink control.
  • the information carries the retransmission resource indication; or may be extended based on the existing ACK/NACK signal format, so that the existing ACK/NACK signal can carry the retransmission resource indication.
  • the embodiment of the present invention does not limit the specific message transmission and reception confirmation information and the retransmission resource indication.
  • the second communication device can also feed back NACK and retransmit resource indications in the same manner for retransmitting data.
  • Receiving, by the second communication device, the NACK fed back after decoding the first data of the first data and the second communication device receiving the retransmission of the first data The NACK that is fed back after the data is decoded may be collectively referred to as the NACK of the first data, and the second communication device receives the retransmission resource indication fed back after the initial data of the first data is decoded, and the second communication device receives the first data.
  • the retransmission resource indication fed back after the retransmission data is decoded may be collectively referred to as the retransmission resource indication of the first data.
  • the second communication device can determine n according to different factors or requirements, for example, can determine n according to the characteristics of the received signal, and the characteristics of the received signal can include the log likelihood ratio of the decoder output.
  • the (LLR) distribution, or the difference between the CQI at the time of scheduling and the CQI of the received actual channel, is not limited in this embodiment of the present invention.
  • the first communications device determines retransmission data of the first data according to RV and n.
  • the first communication device retransmits the first data when receiving the NACK sent by the second communication device.
  • the retransmitted data can be determined based at least on RV and n. It can be understood that the first communication device can directly use n to determine the retransmission data of the first data, or can obtain k based on the n transform, and finally use k to determine the retransmission data of the first data.
  • the first communication device may be converted from n to k based on different factors, for example, according to the available resources of the cell, the number of user equipments participating in the scheduling in the cell, the historical retransmission correct rate, and the first data service type. At least one derives k from the n-transformation, wherein the historical one-time retransmission correct rate may be a ratio of a retransmission success in a previous period of time. For example, if the available resources in the cell are relatively rich, then more time resources than those indicated by n can be configured for retransmission, that is, an offset can be added on the basis of n to obtain k, thereby improving data transmission reliability. Sex, or if the history has a low retransmission rate, you can configure more time resources than n to retransmit.
  • the first communication device determines the retransmission data of the first data according to RV and n (or k), for example, as follows: RV and n (or k) are used as input of rate matching, and the actual retransmitted data symbols are generated and mapped to the retransmission Transfer in the resource. It is to be understood that, in some cases, in addition to RV and n (or k), other reference factors are used as input for rate matching, which is not limited by the embodiment of the present invention.
  • the first communications device sends the retransmitted data of the first data by using the first process.
  • the first communication device After determining the retransmission data of the first data in S303, the first communication device transmits the retransmission data of the first data to the second communication device by using the first process.
  • the manner in which the first communications apparatus transmits the retransmitted data of the first data by using the first process is different:
  • the above mentioned mn or mL 1 consecutive minimum scheduling time units can be regarded as the remaining retransmission resources of the first process.
  • the second process described above is an adjacent process of the first process.
  • the so-called adjacent processes are adjacent in time series.
  • the mL 1 consecutive minimum scheduling time unit in the m consecutive minimum scheduling time units of the G 1 group may be used for the initial transmission of the second data or for the retransmission of the second data.
  • the HARQ process 2 uses the first 2 of the set of 4 consecutive minimum scheduling time units that transmit the retransmission data of the first data.
  • the minimum scheduling time unit that is, the minimum scheduling time unit numbered 13 and 14, and the HARQ process 0 uses the last two minimum scheduling time units, that is, the minimum scheduling time units numbered 13 and 14.
  • Data is mapped to 7 minimum scheduling time units according to the timing of the first process, and 2 sets of 4 consecutive minimum scheduling time units, and the remaining 1 of the 2 consecutive minimum scheduling time units of the 2nd group
  • the minimum scheduling time unit can be used by the HARQ process 1.
  • the HARQ process 1 uses the last minimum scheduling time unit of the first process, that is, the minimum scheduling time unit numbered 28, and HARQ Process 0 uses the first three minimum scheduling time units, the minimum scheduling time unit numbered 25-27.
  • the sending, by the first process, the retransmission data of the first data may further include: the first communications device notifying at least one of the n and the RV to the second communications device, that is, the sending may indicate that n The information of at least one of the RV and the RV is given to the second communication device, thereby making the system more robust.
  • the first communication device notifying the second communication device of the at least one of the n and the RV may be performed simultaneously with transmitting the retransmission data of the first data, or may be performed before transmitting the retransmission data of the first data.
  • the first communication device transmits the retransmission data of the first data according to the k minimum scheduling time units.
  • transmitting the retransmission data of the first data according to the k minimum scheduling time units includes: transmitting retransmission data of the first data by using the first process on the k consecutive minimum scheduling time units And transmitting, by the second process, the second data on the set of m consecutive s consecutive minimum scheduling time units of the retransmitted data transmitting the first data; or, when k>m,
  • the foregoing process is also an adjacent process of the first process.
  • the first communication device transmits the retransmission data of the first data according to the k minimum scheduling time units and the process of transmitting the retransmission data of the first data according to the n minimum scheduling time units.
  • the second process may be a prior process of the first process or a subsequent process of the first process. Further, in order to ensure continuity in timing, when the second process is a prior process of the first process, the second process may be The remaining retransmission resources of the first process are arranged in front of the m consecutive minimum scheduling time units in which the remaining retransmission resources are located, as shown in FIG. 4, when the second process is the subsequent process of the first process, The remaining retransmission resources of the first process may be arranged after the m consecutive minimum scheduling time units in which the remaining retransmission resources are located, as shown in FIG. 5.
  • the sending, by the first process, the retransmission data of the first data by using the first process may further include: sending information indicating the k to the second communication device.
  • the first communication device may further send information indicating the RV to the second communication device.
  • the first communication device sends a finger
  • the information indicating k and/or RV may be performed to the second communication device simultaneously with the retransmission data of the first data, or may be performed before the retransmission data of the first data is transmitted.
  • the retransmission resources (remaining retransmission resources) saved in one process are shared with the initial data of other processes or retransmitted data, so that the HARQ process can be fully utilized.
  • Time domain resources transmit useful data, which is beneficial to improve the reachability rate and avoid conflicts between different packets and feedback.
  • the second communication device may decode the data of a set of m consecutive minimum scheduling time units or may wait for n or k consecutive minimums.
  • the data of the scheduling time unit is collected and re-decoded, which is not limited by the embodiment of the present invention.
  • the predetermined rule may be, for example, a retransmission resource that preferentially saves the first process. It is shared with the HARQ process with the newly transmitted data and is preferentially shared to the prior process; optionally, if the adjacent processes of the first process are all retransmitted data, more resources are needed according to the retransmission needs of the adjacent processes. The process is used, if the neighboring process does not need the remaining retransmission resources of the first process, it is used as a retransmission of the first process itself.
  • HARQ process 0 For example, suppose there are three processes, namely, HARQ process 0-2, the first process is HARQ process 1, HARQ process 0 and HARQ process 2 are adjacent processes of HARQ process 1, and if HARQ process 2 is new data, HARQ process 0 In order to retransmit the data, the retransmission resources saved by the HARQ process 1 are used by the HARQ process 2.
  • the retransmission resources saved by the HARQ process 1 are used by the HARQ process 0, if The HARQ processes 0 and 2 are both retransmitted data, and the HARQ process 2 retransmission needs to be greater than m consecutive minimum scheduling time units, and the retransmission resources saved by the HARQ process 1 are used by the HARQ process 2, if the HARQ processes 0 and 2 The data is retransmitted, but if the HARQ process 0 and 2 retransmission do not need to be greater than m consecutive minimum scheduling time units, the retransmission resources saved by the HARQ process 1 are left to continue to retransmit themselves.
  • the determined process of retransmitting the resource saved by using the first process is the second process. If the second process uses the retransmission resource saved by the first process to perform data transmission, the resource information used by the second process may be further notified to the second communication device, thereby making the system more robust.
  • sending the initial data of the first data or retransmitting the data by using the first process may further include: sending information indicating a process number of the first process to the second communication device, where the present invention is The embodiment does not limit the manner in which the first communication device sends the process number information. It can be understood that, for the asynchronous HARQ, the retransmission data of the first data is sent by the first process, corresponding to the case that the first communication device does not perform the conversion of the n, and the method further includes: transmitting at least one of the n and the RV.
  • the first communication device transmitting at least one of the n and the RV to the second communication device may be performed simultaneously with the retransmission data of the first data, or may be retransmitting the first data.
  • the data is performed before; corresponding to the case where the first communication device converts n to k, sending the retransmission data of the first data by using the first process may further include: transmitting at least one of k and RV, similar And transmitting, by the first communication device, at least one of k and RV to the second communication device may be performed simultaneously with transmitting the retransmission data of the first data, or before transmitting the retransmission data of the first data.
  • the first communication device sends the initial data of the first data by using the first process on the m consecutive minimum scheduling time units, whether for synchronous HARQ or asynchronous HARQ. It may also include transmitting at least one of m, RV to the second communication device. Similarly, the first communication device transmitting at least one of m and RV to the second communication device may be performed simultaneously with the initial transmission of the first data, or before transmitting the initial data of the first data. get on.
  • m is variable.
  • information such as m, n, k, RV, and process number can be transmitted through control information.
  • timing diagram of the HARQ process shown in FIG. 4-6 is described by taking three processes as an example, and the data transmission method under other processes is similar to the embodiment of the present invention.
  • the second communication device receives the retransmission data that the first communication device sends the first data by using the first process.
  • the second communication device After the first communication device transmits the retransmission data of the first data through the first process in the manner described in S304, the second communication device performs reception and decoding, and transmits the reception confirmation information and the retransmission resource indication.
  • the data transmission method provided by the embodiment of the present invention improves the rate of data transmission by using the HARQ transmission mechanism by retransmission on demand, thereby achieving a relative balance between the transmission rate, the transmission delay, and the transmission reliability.
  • the first communication device and the second communication device in the embodiments of the present invention may be any device of the transmitting end and a device of the receiving end that perform data transmission in a wireless manner.
  • the first communication device and the second communication device may be any device having a wireless transceiving function, including but not limited to: a base station, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and a terminal, etc. It can communicate with one or more core networks via a radio access network (RAN), or can communicate directly with other terminals.
  • RAN radio access network
  • the data transmission method provided by the embodiment of the present invention can be applied to downlink data transmission, and can also be applied to uplink data transmission, and can also be applied to device to device (D2D) data transmission.
  • D2D device to device
  • the first communication device may be a base station, and the corresponding second communication device may be a terminal.
  • the first communication device may be a terminal, and the corresponding second communication device may be a base station.
  • the first communication device is the first terminal, and the corresponding second communication device is the second terminal.
  • the embodiment of the present invention does not limit the application scenario.
  • each network element such as a terminal, a base station, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • Those skilled in the art will readily recognize the present invention in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. It can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • FIG. 7 is a schematic structural diagram of a possible communication apparatus according to an embodiment of the present invention.
  • the communication device can implement the functions of the first communication device in the above embodiment of the data transmission method, and thus can also realize the beneficial effects of the above data transmission method.
  • the communication device includes a processor 701 and a transceiver 702.
  • the transceiver 702 is configured to send, by using a first process, initial transmission data of the first data, and receive negative confirmation information of the first data, on the m consecutive minimum scheduling time units.
  • the retransmission resource indication includes information indicating n, and n is used to determine a number of minimum scheduling time units required to transmit retransmission data of the first data, where m and n Is a positive integer;
  • the processor 701 is configured to determine retransmission data of the first data according to a redundancy version (RV) and n; and the transceiver 702 is further configured to send, by the first process, retransmission of the first data determined by the processor 701. data.
  • RV redundancy version
  • the manner in which the processor 701 determines the retransmission data of the first data according to the redundancy version (RV) and n may refer to a corresponding description in the method embodiment.
  • the transceiver 702 may be specifically configured to send retransmission data of the first data by using the first process according to a corresponding manner described in the method embodiment.
  • the transceiver 702 can also be configured to transmit information indicative of at least one of n and RV; or, the transceiver 702 can be configured to transmit information indicative of k; or the transceiver 702 can be further configured to transmit a process indicative of the first process Number information.
  • the manner in which the transceiver sends the information indicating the m, n, RV, k and the process number can be referred to the related description in the method embodiment.
  • the communication device improves the adoption of HARQ transmission by retransmitting on demand.
  • the mechanism performs the rate of data transmission, so that the relative balance between transmission rate, transmission delay and transmission reliability can be achieved.
  • the retransmission resources (remaining retransmission resources) saved in one process are shared with the initial data of other processes or retransmitted data, so that the time domain resources can be fully utilized to transmit useful data, which is beneficial to improve the reachability. Rate and avoid conflicts between different packets and retransmissions.
  • Figure 7 only shows one design of the communication device.
  • the communication device can include any number of processors and transceivers, and all communication devices that can implement embodiments of the present invention are within the scope of the present invention.
  • FIG. 8 is a schematic structural diagram of another communication apparatus according to an embodiment of the present invention.
  • the communication device realizes the functions of the first communication device in the above-described embodiment of the data transmission method, and thus can also realize the advantageous effects of the above data transmission method.
  • the communication device includes a processing unit 801 and a transceiver unit 802.
  • the processing unit 801 implements corresponding functions in the processor 701
  • the transceiver unit 802 implements corresponding functions in the transceiver 702.
  • the communication device of the embodiment shown in FIG. 7 and FIG. 8 above may be a UE, a base station, or another device that uses HARQ technology for data communication.
  • FIG. 9 is a schematic structural diagram of a possible communication apparatus according to an embodiment of the present invention.
  • the communication device can implement the functions of the second communication device in the embodiment of the data transmission method described above, and thus can also achieve the beneficial effects of the above data transmission method.
  • the communication device includes a receiver 901 and a transmitter 902.
  • the receiver 901 is configured to receive initial data of the first data, where the initial data of the first data is data sent by the first process on the m consecutive minimum scheduling time units, where the m Is a positive integer;
  • the transmitter 902 is configured to send a NACK and a retransmission resource indication of the first data, where the retransmission resource indication includes information indicating n, and n is used to determine a retransmission data required to transmit the first data.
  • the receiver 901 is further configured to receive retransmission data of the first data, where the retransmission data of the first data is sent by the first process and determined according to a redundancy version and n.
  • receiver 901 For a specific implementation of the receiver 901, refer to the related description in the method embodiment.
  • the communication device may further comprise a processor for determining n, for example, n may be determined according to characteristics of the received signal.
  • the communication device improves the rate of data transmission by using the HARQ transmission mechanism by retransmission on demand, thereby achieving a relative balance between the transmission rate, the transmission delay, and the transmission reliability. Further, the retransmission resources (remaining retransmission resources) saved in one process are shared with the initial data of other processes or retransmitted data, so that the time domain resources can be fully utilized to transmit useful data, which is beneficial to improve the reachability. Rate and avoid conflicts between different packets and retransmissions.
  • Figure 9 only shows one design of the communication device.
  • the communication device can include any number of transmitters, receivers, and processors, and all communication devices that can implement embodiments of the present invention are within the scope of the present invention.
  • FIG. 10 is a schematic structural diagram of another communication apparatus according to an embodiment of the present invention.
  • the communication device realizes the functions of the second communication device in the above embodiment of the data transmission method, and thus can also realize the advantageous effects of the above data transmission method.
  • the communication device includes a receiving unit 1001 and a transmitting unit 1002.
  • the receiving unit 1001 implements the corresponding function in the receiver 901, and the sending unit 1002 implements the corresponding function in the transmitter 902.
  • the communication device of the embodiment shown in FIG. 9 and FIG. 10 above may be a UE, a base station, or another device that uses HARQ technology for data communication.
  • FIG. 11 shows a possible structural diagram of a base station involved in the foregoing embodiment.
  • the base station shown includes a transceiver 1102 and a controller/processor 1104.
  • the transceiver 1102 can be configured to support sending and receiving information between the base station and the terminal in the foregoing embodiment, and supporting the terminal. Radio communication with other terminals.
  • the controller/processor 1104 can be used to perform various functions for communicating with a terminal or other network device.
  • On the uplink the uplink signal from the terminal is received via the antenna, coordinated by the transceiver 1102, and further processed by the controller/processor 1104 to recover the service data and signaling information transmitted by the terminal.
  • traffic data and signaling messages are processed by controller/processor 1104 and mediated by transceiver 1102 to generate downlink signals for transmission to the terminal via the antenna.
  • the transceiver 1102 is also operative to perform a data transmission method as described in the above embodiments, for example, the transceiver includes a transmitter and a receiver.
  • the transceiver In the scenario of downlink data transmission, the transceiver is configured to perform the functions of the first data transmission device in the embodiment corresponding to Figures 3-6.
  • the transceiver In the scenario of uplink data transmission, the transceiver is configured to perform the functions of the second data transmission device in the corresponding embodiment of Figures 3-6.
  • the controller/processor 1104 can also be used to perform the processes involved in the base station of Figures 3-6 and/or other processes for the techniques described herein.
  • the base station can also include a memory 1106 that can be used to store program codes and data for the base station.
  • the base station may further include a communication unit 1108 for supporting the base station to communicate with other network entities. It will be appreciated that Figure 11 only shows a simplified design of the base station. In practical applications, the base station may include any number of transceivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present invention are within the scope of the present invention.
  • Fig. 12 shows a simplified schematic diagram of one possible design structure of the terminal involved in the above embodiment.
  • the terminal includes a transceiver 1204, a controller/processor 1206, and may also include a memory 1208 and a modem processor 1202.
  • Transceiver 1204 conditions (e.g., analog conversion, filtering, amplifying, upconverting, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments.
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Transceiver 1204 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • the encoder 1212 receives the traffic data and signaling messages to be transmitted on the uplink, and the service data and signaling messages. Processing (eg, formatting, encoding, and interleaving).
  • Modulator 1214 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 1218 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 1212 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the terminal.
  • Encoder 1212, modulator 1214, demodulator 1218, and decoder 1216 may be implemented by a composite modem processor 1202. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems).
  • the controller/processor 1206 controls and manages the actions of the terminal for performing the processing performed by the terminal in the above embodiment.
  • transceiver 1204 includes a transmitter and a receiver.
  • the transmitter and receiver are configured to perform the functions of the second data transmission device in the corresponding embodiment of Figures 2-6.
  • the transmitter and receiver are configured to perform the functions of the first data transmission device in the corresponding embodiment of Figures 3-6.
  • the terminal at the transmitting end is configured to perform the function of the first data transmission device in the corresponding embodiment of FIG. 3 to FIG. 6, and the terminal at the receiving end is configured to execute the corresponding embodiment in FIG. 3 to FIG.
  • the function of the second data transmission device can also be used to perform the processes involved in the terminal of FIGS. 2-6 and/or other processes for the techniques described herein.
  • Memory 1208 is for storing program code and data for the terminal.
  • the controller/processor for performing the base station, UE, base station or control node in the above embodiments may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and a field. Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the data transmission method and the communication device provided by the foregoing embodiments of the present invention can be applied to any scenario with data transmission, and is not limited to having a higher transmission rate requirement and transmission.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage well known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the terminal.
  • the processor and the storage medium can also exist as discrete components in the terminal.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif qui permettent de transmettre des données. Le procédé consiste, sur un nombre m des plus petites unités de temps de distribution consécutives, à envoyer les données de transmission initiales des premières données par l'intermédiaire d'un premier processus, et à déterminer les données de retransmission desdites premières données conformément à une version de redondance (RV) et une ressource de retransmission; à envoyer les données de retransmission déterminées des premières données par l'intermédiaire du premier processus, de façon à obtenir un équilibre entre la vitesse de transmission, le retard du temps de transmission et la fiabilité de la transmission.
PCT/CN2016/094233 2016-08-09 2016-08-09 Procédé de transmission de données et appareil de communication Ceased WO2018027588A1 (fr)

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CN201680088061.5A CN109565368B (zh) 2016-08-09 2016-08-09 数据传输方法和通信装置

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090249158A1 (en) * 2008-01-03 2009-10-01 Lg Electronics Inc. Method for packet retransmission employing feedback information
CN101790194A (zh) * 2009-01-22 2010-07-28 中兴通讯股份有限公司 用于上行中继链路的混合自动重传请求方法、装置及系统
CN102098152A (zh) * 2010-12-30 2011-06-15 电子科技大学 载波聚合下harq的跨载波重传方法
CN103384187A (zh) * 2012-05-04 2013-11-06 中国电信股份有限公司 Tti绑定的上行传输方法、系统与移动终端
CN103427964A (zh) * 2012-05-25 2013-12-04 中兴通讯股份有限公司 一种数据传输方法、设备及系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008041824A2 (fr) * 2006-10-02 2008-04-10 Lg Electronics Inc. Procédé de retransmission de données dans un système multi-porteuse
CN101286825A (zh) * 2007-04-11 2008-10-15 松下电器产业株式会社 实现基于可靠性的混合自动重传的方法、发送端和系统
KR101467764B1 (ko) * 2008-01-03 2014-12-03 엘지전자 주식회사 피드백 정보에 따른 패킷 재전송 방법
EP2077646A1 (fr) * 2008-01-05 2009-07-08 Panasonic Corporation Signalisation de canal de contrôle utilisant des points pour indiquer le mode de programmation
JP2009182780A (ja) * 2008-01-31 2009-08-13 Nec Corp 再送プロセスのデータ処理方法およびそれを用いた通信装置
CN101605024B (zh) * 2008-06-12 2013-01-16 中兴通讯股份有限公司 混合自动重传请求方法
US20130343273A1 (en) * 2012-06-26 2013-12-26 Qualcomm Incorporated Enhanced tti bundling with flexible harq merging
US9621310B2 (en) * 2013-12-23 2017-04-11 Apple Inc. TTI bundling for downlink communication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090249158A1 (en) * 2008-01-03 2009-10-01 Lg Electronics Inc. Method for packet retransmission employing feedback information
CN101790194A (zh) * 2009-01-22 2010-07-28 中兴通讯股份有限公司 用于上行中继链路的混合自动重传请求方法、装置及系统
CN102098152A (zh) * 2010-12-30 2011-06-15 电子科技大学 载波聚合下harq的跨载波重传方法
CN103384187A (zh) * 2012-05-04 2013-11-06 中国电信股份有限公司 Tti绑定的上行传输方法、系统与移动终端
CN103427964A (zh) * 2012-05-25 2013-12-04 中兴通讯股份有限公司 一种数据传输方法、设备及系统

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