WO2017041288A1 - Procédé et appareil de retransmission de données - Google Patents

Procédé et appareil de retransmission de données Download PDF

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Publication number
WO2017041288A1
WO2017041288A1 PCT/CN2015/089431 CN2015089431W WO2017041288A1 WO 2017041288 A1 WO2017041288 A1 WO 2017041288A1 CN 2015089431 W CN2015089431 W CN 2015089431W WO 2017041288 A1 WO2017041288 A1 WO 2017041288A1
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WIPO (PCT)
Prior art keywords
data
retransmissions
encoding
hich
receiving end
Prior art date
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PCT/CN2015/089431
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English (en)
Chinese (zh)
Inventor
黄雯雯
赵悦莹
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华为技术有限公司
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Priority to PCT/CN2015/089431 priority Critical patent/WO2017041288A1/fr
Priority to CN201580035079.4A priority patent/CN107078859B/zh
Publication of WO2017041288A1 publication Critical patent/WO2017041288A1/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
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for data retransmission.
  • HARQ Hybrid Automatic Repeat reQuest
  • the so-called soft HARQ means that the transmitting end first determines the number of repetitions of data sent to the receiving end by evaluating the channel quality or path loss, and transmits the data to the receiving end according to the repetition number, and the receiving end feeds back the correct receiving (ACK) to the transmitting end.
  • the target SINR Signal to Interference plus Noise Ratio
  • the information informs the sender of the behavior.
  • a signaling bearer mode which transmits the following content corresponding to different transmission indications by a specified coding mode: ACK (indicating correct reception); NACK1 (indicating repetition) Transmission N*0.5 times); NACK2 (indicating repeated transmission N*1 times); NACK3 (indicating repeated transmission N*2 times), where N is the initial number of transmissions of data.
  • the uplink enhanced hybrid automatic repeat request indication channel is used in the E-HCH (Enhanced Dedicated Channel) hybrid ARQ (Automatic Repeat Request) indicator channel after the number of retransmissions is calculated.
  • the above four cases are encoded by using 2 bits in each slot, that is, the codes corresponding to the above four cases are 11, 00, 01, and 10, respectively, and three slots are used to transmit the same code during transmission. For example, if the number of times corresponding to NACK2 is to be sent, the information sent by the E-HICH is:
  • an embodiment of the present invention provides a method and an apparatus for data retransmission.
  • the technical solution is as follows:
  • the first aspect a method for data retransmission, includes:
  • the determining the number of retransmissions of the data includes:
  • the estimated number of retransmissions is greater than or equal to the number of initial transmissions of the data, determining the number of initial transmissions of the data as the number of retransmissions of the data fed back to the transmitting end;
  • the encoding, by the retransmission of the data includes:
  • Encoding is performed in the encoding rule according to an encoding format corresponding to the number of retransmissions of the data.
  • the second aspect a method for data retransmission, includes:
  • a transmission indication sent by the receiving end of the data transmission where the transmission indication is sent by the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH, and the first three time slots of the E-HICH allow eight types of configuration Encoding format;
  • the number of retransmissions of the data indicated by the receiving end is obtained in the decoded transmission indication, where the number of retransmissions of the data is the data The number of transmissions at the next retransmission;
  • the data is sent to the receiving end according to the number of retransmissions of the data.
  • the obtaining, by the received indication, the retransmission times of the data indicated by the receiving end includes:
  • the third aspect a method for data retransmission, includes:
  • a first receiving module configured to receive data sent by the sending end
  • a first determining module configured to determine a number of retransmissions of the data when detecting that the data is not correctly decoded; wherein, the number of retransmissions of the data is a number of times of sending the data at a next retransmission;
  • a first sending module configured to encode the number of retransmissions of the data, and send the code as the transmission indication to the sending by using the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH
  • the first three time slots of the E-HICH allow eight encoding formats to be configured.
  • the first determining module includes:
  • An estimating unit configured to estimate a number of retransmissions according to the detected signal to interference plus noise ratio
  • a first determining unit configured to determine, if the estimated number of retransmissions is greater than or equal to the number of initial transmissions of the data, a number of retransmissions of the data that is fed back to the transmitting end ;
  • a second determining unit configured to determine the calculated number of retransmissions as the number of retransmissions of the data fed back to the sending end, if the estimated number of retransmissions is less than the number of initial transmissions of the data.
  • the first sending module includes:
  • a third determining unit configured to determine, in a plurality of preset numerical ranges, a range of values to which the initial number of times of the data belongs;
  • a first acquiring unit configured to acquire an encoding rule corresponding to the numerical range
  • a coding unit configured to perform coding in the coding rule according to an encoding format corresponding to the number of retransmissions of the data.
  • a controller for data retransmission comprising:
  • a second receiving module configured to receive a transmission indication sent by the receiving end of the data, where the transmission indication is sent by using the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH, the first three of the E-HICH Time slots allow configuration of eight encoding formats;
  • a second determining module configured to decode the transmission indication, to determine whether the data needs to be retransmitted to the receiving end
  • Obtaining a module if the data needs to be retransmitted to the receiving end, acquiring, in the decoded transmission indication, a number of retransmissions of the data indicated by the receiving end; wherein, the data is retransmitted The number of times is the number of times the data is transmitted at the next retransmission;
  • a second sending module configured to send the data to the receiving end according to the number of retransmissions of the data.
  • the acquiring module includes:
  • a fourth determining unit configured to determine, in a plurality of preset numerical ranges, a range of values to which the initial number of times of the data belongs;
  • a second acquiring unit configured to acquire an encoding rule corresponding to the numerical range
  • a fifth determining unit configured to determine, according to the decoded transmission indication, the number of retransmissions of the data in the encoding rule.
  • a fifth aspect a receiving end device, where the receiving end device comprises: a processor, a receiver, and a transmitter;
  • the processor is configured to determine, when the data is not correctly decoded, the number of retransmissions of the data, where the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission; Encoding the number of retransmissions of the data;
  • the transmitter is configured to send the code as a transmission indication to the sending end by using a first three time slots of an uplink enhanced hybrid automatic repeat request indication channel E-HICH; the first three hours of the E-HICH
  • E-HICH uplink enhanced hybrid automatic repeat request indication channel
  • the processor is further configured to estimate a retransmission frequency according to the detected signal to interference plus noise ratio; if the estimated retransmission number is greater than or equal to the The number of initial transmissions of the data is determined as the number of times of initial transmission of the data as the number of retransmissions of the data fed back to the transmitting end; if the estimated number of retransmissions is less than the number of initial transmissions of the data, The calculated number of retransmissions is determined as the number of retransmissions of the data fed back to the transmitting end.
  • the processor is further configured to use multiple presets
  • the value range of the data is determined by the value range corresponding to the number of times of the initial data transmission; the coding rule corresponding to the value range is obtained; and the coding rule is encoded according to the coding format corresponding to the number of retransmissions of the data.
  • a sender device the controller includes: a processor, a receiver, and a transmitter;
  • the receiver is configured to receive a transmission indication sent by a receiving end of the data, where the transmission indication is sent by using the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH, and the first three of the E-HICH Time slots allow configuration of eight encoding formats;
  • the processor is configured to decode the transmission indication, determine whether the data needs to be retransmitted to the receiving end, and if the data needs to be retransmitted to the receiving end, the transmission indication in the decoding And obtaining, by the receiving end, the number of retransmissions of the data, where the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission;
  • the transmitter is configured to send the data to the receiving end according to the number of retransmissions of the data.
  • the processor is further configured to determine, in a plurality of preset value ranges, a range of values to which the initial number of times of the data belongs; and obtain the range of values Corresponding coding rule; determining, according to the decoded transmission indication, the number of retransmissions of the data in the coding rule.
  • the number of retransmissions of the calculated data is sent to the transmitting end through the first three time slots of the E-HICH, wherein the first three time slots of the E-HICH allow eight types to be configured. Encoding format. Through the first three time slots of the E-HICH, more kinds of feedback content can be returned to the transmitting end, so that more specific retransmission times can be fed back to the transmitting end more accurately, which reduces power consumption and reduces interference.
  • Embodiment 1 is a flowchart of a method for data retransmission provided by Embodiment 1 of the present invention
  • Embodiment 2 is a flowchart of a method for data retransmission provided by Embodiment 2 of the present invention
  • Embodiment 3 is a flowchart of a method for data retransmission provided by Embodiment 3 of the present invention.
  • Embodiment 4 is a schematic structural diagram of an apparatus for data retransmission provided by Embodiment 4 of the present invention.
  • Embodiment 5 is a schematic structural diagram of an apparatus for data retransmission provided by Embodiment 5 of the present invention.
  • FIG. 6 is a schematic structural diagram of a device at a transmitting end according to Embodiment 6 of the present invention.
  • FIG. 7 is a schematic structural diagram of a receiving end device according to Embodiment 7 of the present invention.
  • the embodiment of the invention provides a method for data retransmission, see FIG. 1 .
  • the method includes:
  • the embodiments of the present invention are applicable to the GSM (Global System for Mobile Communication), the UMTS (Universal Mobile Telecommunications System), and the LTE (Long Term Evolution) system. This is not limited.
  • GSM Global System for Mobile Communication
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • the executor of the embodiment of the present invention may be a user equipment or a base station.
  • the transmitting end is a UE
  • the receiving end is a base station; when the transmitting end is a base station, the receiving end is a UE.
  • the number of retransmissions of the calculated data is sent to the transmitting end through the first three time slots of the E-HICH, where the first three time slots of the E-HICH Allows eight encoding formats to be configured.
  • the first three time slots of the E-HICH more kinds of feedback content can be returned to the transmitting end, so that more specific retransmission times can be fed back to the transmitting end more accurately, which reduces power consumption and reduces interference.
  • the embodiment of the invention provides a method for data retransmission, see FIG. 2 .
  • the method includes:
  • the embodiments of the present invention are applicable to the GSM, UMTS, and LTE systems, and are not limited herein.
  • the executor of the embodiment of the present invention may be a user equipment or a base station.
  • the transmitting end is a UE
  • the receiving end is a base station; when the transmitting end is a base station, the receiving end is a UE.
  • the number of retransmissions received by the receiving end is obtained in the first three time slots of the E-HICH, so that the transmitting end obtains more kinds of feedback content by using the first three time slots of the E-HICH, thereby more accurately
  • the data is retransmitted to the receiving end by the number of retransmissions fed back by the receiving end, which reduces power consumption and reduces interference.
  • An embodiment of the present invention provides a method for data retransmission, as shown in FIG. 3.
  • the method includes:
  • the step may be performed by the receiving end when the sending end sends data for the first time; or, the step may be the step performed by the receiving end when the sending end retransmits the data.
  • the number of times the data sent by the sending end in the current stage may be one time, or the data may be repeatedly sent multiple times. If the data is sent for the first time, the number of times the sending end sends the data may be based on the new arrival quality or path loss in advance by the sending end. The method is evaluated in the same manner, and the number of transmissions is sent to the receiving end in advance, and then the transmitting end transmits the data.
  • the transmission indication is also fed back to the sending end, and the sending indication needs to be notified to the sending end that the data is successfully sent.
  • the encoding process of the transmission indication also needs to be obtained by selecting a corresponding encoding format.
  • the encoding format corresponding to the ACK that informs the sending end that the data is successfully sent is set in the first three slots of the E-HICH channel according to a preset encoding format, to indicate that the data is correctly decoded, and the preset encoding is performed.
  • the format can be: all three slots are set to 1, which can be shown in Table 1.
  • the method for selecting a corresponding encoding format may be determining a range of values to which the number of initial transmissions belongs, and determining an encoding rule according to the data range, and determining, in the encoding rule, an encoding format corresponding to an ACK, and selecting an encoding format.
  • the method may also not pre-define the encoding format corresponding to the ACK according to the number of initial transmissions of the data, and directly obtain the encoding format corresponding to the ACK when detecting that the data is correctly decoded.
  • the receiving end can simultaneously calculate the signal to interference plus noise ratio based on the strength of the received useful signal and the strength of the received interference signal (noise and interference).
  • the receiving end estimates a number of retransmissions based on the signal to interference plus noise ratio.
  • the number of retransmissions is not the number of retransmissions that are ultimately fed back to the transmitting end.
  • the manner of estimating the number of retransmissions by the ratio of the signal to the interference plus noise is known in the prior art, and details are not described herein again.
  • the number of retransmissions estimated in this step is recorded as M.
  • the number of initial transmissions of data is determined as the number of retransmissions of data fed back to the transmitting end.
  • the number of initial transmissions of data is recorded as N.
  • the calculated number of retransmissions is determined as the number of retransmissions of data fed back to the transmitting end.
  • an encoding rule is pre-defined in the receiving end. Since 0 or 1 can be set in each time slot of the first three time slots of the E-HICH, a combination of 0 or 1 in the three time slots can exist in eight. A combination of eight encoding formats can be stored in the corresponding encoding rules.
  • the eight encoding formats since three encoding formats can be set in three slots of the E-HICH channel, in the eight encoding formats, two cases are fixedly set to represent the transmission without retransmission and complete retransmission. Indicates, so only the remaining six encoding formats can indicate the number of other retransmissions.
  • the value range of N is very wide, and the corresponding M has a wide range of values. Therefore, a plurality of value ranges of N may be set in advance, and an encoding rule is set according to the value range of each N, and each encoding rule may be set with six other than a transmission indication that does not need to be retransmitted and completely retransmitted. An indication of the number of retransmissions.
  • step 303 can be implemented by the following steps:
  • the information indication in the first three slots of the E-HICH channel may also be as shown in Table 5:
  • the information indication in the first three slots of the E-HICH channel may also be as shown in Table 6:
  • the information indication in the first three slots of the E-HICH channel may also be as shown in Table 7:
  • the data it is detected whether the first three slots of the E-HICH channel are three 1, and if so, the data does not need to be retransmitted; if not three, it is determined that the data needs to be retransmitted.
  • the transmission indication of the ACK may also be obtained by determining a transmission indication corresponding to three of the first three slots of the E-HICH channel by a predefined coding rule.
  • the method for determining the encoding rule may be: determining a value range according to the number of initial transmissions of the data, and determining an encoding rule according to the data range, and determining, in the encoding rule, an encoding format corresponding to the ACK.
  • this step corresponds to the determining manner in step 303, and the setting is also set according to the value range of each N, and an encoding rule can be set, and each of the encoding rules can be set with a transmission indication except that the retransmission and the complete retransmission are not required.
  • the transmission indication is determined in the coding rule corresponding to N by the value in the first three slots of the decoded E-HICH channel.
  • the number of retransmissions of the calculated data is sent to the transmitting end through the first three time slots of the E-HICH, where the first three time slots of the E-HICH Allows eight encoding formats to be configured.
  • the first three time slots of the E-HICH more kinds of feedback content can be returned to the transmitting end, so that more specific retransmission times can be fed back to the transmitting end more accurately, which reduces power consumption and reduces interference.
  • the transmitting end obtains more kinds of feedback contents by using the first three time slots of the E-HICH, thereby enabling more accurate reception.
  • the number of retransmissions of the end feedback performs retransmission of data to the receiving end, which reduces power consumption and reduces interference.
  • An embodiment of the present invention provides a device for data retransmission.
  • the device includes:
  • the first receiving module 401 is configured to receive data sent by the sending end
  • the first determining module 402 is configured to determine, when the data is incorrectly decoded, the number of retransmissions of the data, where the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission;
  • the first sending module 403 is configured to encode the number of retransmissions of the data, and send the code as a transmission indication to the transmitting end by using the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH; E-HICH The first three time slots allow eight encoding formats to be configured.
  • the first determining module 402 includes:
  • An estimating unit configured to estimate a number of retransmissions according to the detected signal to interference plus noise ratio
  • a first determining unit configured to determine, as the estimated number of retransmissions is greater than or equal to the number of initial transmissions of data, the number of times of initial transmission of data as the number of retransmissions of data fed back to the transmitting end;
  • a second determining unit configured to determine the calculated number of retransmissions as the number of retransmissions of data fed back to the transmitting end, if the estimated number of retransmissions is less than the number of initial transmissions of the data.
  • the first sending module 403 includes:
  • a third determining unit configured to determine, in a plurality of preset numerical ranges, a range of values to which the number of initial transmissions of data belongs;
  • a first obtaining unit configured to acquire an encoding rule corresponding to the value range
  • the coding unit is configured to encode in the coding rule according to an encoding format corresponding to the number of times of retransmission of the data.
  • the number of retransmissions of the calculated data is sent to the transmitting end through the first three time slots of the E-HICH, where the first three time slots of the E-HICH Allows eight encoding formats to be configured.
  • the first three time slots of the E-HICH more kinds of feedback content can be returned to the transmitting end, so that more specific retransmission times can be fed back to the transmitting end more accurately, which reduces power consumption and reduces interference.
  • An embodiment of the present invention provides a device for data retransmission.
  • the device includes:
  • the second receiving module 501 is configured to receive a transmission indication sent by the receiving end of the data, where the transmission indication is sent by using the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH, and the E-HICH
  • the first three time slots allow configuration of eight encoding formats
  • the second determining module 502 is configured to decode the transmission indication, and determine whether the data needs to be retransmitted to the receiving end.
  • the obtaining module 503 is configured to: if the data needs to be retransmitted to the receiving end, obtain the number of retransmissions of the data indicated by the receiving end in the decoded transmission indication; wherein the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission ;
  • the second sending module 504 is configured to send data to the receiving end according to the number of retransmissions of the data.
  • the obtaining module 503 includes:
  • a fourth determining unit configured to determine, in a plurality of preset numerical ranges, a range of values to which the initial number of times of data belongs;
  • a second obtaining unit configured to acquire an encoding rule corresponding to the value range
  • a fifth determining unit configured to determine, according to the decoded transmission indication, the number of retransmissions of the data in the encoding rule.
  • the number of retransmissions received by the receiving end is obtained in the first three time slots of the E-HICH, so that the transmitting end obtains more kinds of feedback content by using the first three time slots of the E-HICH, thereby more accurately
  • the data is retransmitted to the receiving end by the number of retransmissions fed back by the receiving end, which reduces power consumption and reduces interference.
  • An embodiment of the present invention provides a receiving end device, as shown in FIG. 6.
  • the receiving device includes: a processor 601, a receiver 602, and a transmitter 603;
  • a receiver configured to receive data sent by the sender
  • a processor configured to determine a number of retransmissions of the data when the detected data is not correctly decoded; wherein, the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission; and the number of retransmissions of the data is encoded;
  • the transmitter is configured to send the code as a transmission indication to the transmitting end by using the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH; the first three time slots of the E-HICH allow eight encoding formats to be configured.
  • the processor is further configured to estimate the number of retransmissions according to the detected signal to interference plus noise ratio; If the estimated number of retransmissions is greater than or equal to the number of initial transmissions of data, the number of initial transmissions of data is determined as the number of retransmissions of data fed back to the transmitting end; if the estimated number of retransmissions is less than the number of initial transmissions of data, The number of retransmissions is determined as the number of retransmissions of data fed back to the sender.
  • the processor is further configured to determine, in a plurality of preset value ranges, a range of values to which the initial number of times of the data belongs; obtain an encoding rule corresponding to the range of values; The encoding is performed according to an encoding format corresponding to the number of retransmissions of the data.
  • the number of retransmissions of the calculated data is sent to the transmitting end through the first three time slots of the E-HICH, where the first three time slots of the E-HICH Allows eight encoding formats to be configured.
  • the first three time slots of the E-HICH more kinds of feedback content can be returned to the transmitting end, so that more specific retransmission times can be fed back to the transmitting end more accurately, which reduces power consumption and reduces interference.
  • An embodiment of the present invention provides a transmitting end device, as shown in FIG. 7.
  • the sender device includes: a processor 701, a receiver 702, and a transmitter 703;
  • the receiver is configured to receive a transmission indication sent by a receiving end of the data, where the transmission indication is sent by using the first three time slots of the uplink enhanced hybrid automatic repeat request indication channel E-HICH, and the first three of the E-HICH Time slots allow configuration of eight encoding formats;
  • the processor is configured to decode the transmission indication, determine whether the data needs to be retransmitted to the receiving end, and if the data needs to be retransmitted to the receiving end, the transmission indication in the decoding And obtaining, by the receiving end, the number of retransmissions of the data, where the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission;
  • the transmitter is configured to send the data to the receiving end according to the number of retransmissions of the data.
  • the processor is further configured to determine, in a plurality of preset value ranges, a range of values to which the initial number of times of the data belongs; and obtain an encoding rule corresponding to the range of values; Transmitting an indication, determining a number of retransmissions of the data in the encoding rule.
  • the number of retransmissions received by the receiving end is obtained in the first three time slots of the E-HICH, so that the transmitting end obtains more kinds of feedback content by using the first three time slots of the E-HICH, and thus can further Accurately retransmitting data to the receiving end through the number of retransmissions fed back by the receiving end, reducing power overhead and reducing interference.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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

Abstract

Des modes de réalisation de la présente invention, qui a trait au domaine technique des communications, concernent un procédé et un appareil de retransmission de données. Le procédé comprend les étapes suivantes : la réception de données transmises par une extrémité de transmission ; lors de la détection du fait que les données ne sont pas décodées correctement, la détermination du nombre de retransmissions des données, le nombre de retransmissions des données étant le nombre de transmissions des données durant la prochaine retransmission ; le codage du nombre de retransmissions des données et la transmission du code en tant qu'indication de transmission à l'extrémité de transmission à l'aide des trois premiers créneaux temporels d'un canal d'indicateur de demande de répétition automatique hybride améliorée (E-HICH) en liaison montante, les trois premiers créneaux temporels du canal E-HICH permettent une configuration de huit formats de codage. Au moyen de la présente invention, plus de types de contenus d'informations en retour peuvent être renvoyés à l'extrémité de transmission à l'aide des trois premiers créneaux temporels du canal E-HICH de sorte qu'un nombre plus spécifique de retransmissions peut être renvoyé précisément à l'extrémité de transmission, réduisant de cette façon la consommation d'énergie et les interférences.
PCT/CN2015/089431 2015-09-11 2015-09-11 Procédé et appareil de retransmission de données WO2017041288A1 (fr)

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PCT/CN2015/089431 WO2017041288A1 (fr) 2015-09-11 2015-09-11 Procédé et appareil de retransmission de données
CN201580035079.4A CN107078859B (zh) 2015-09-11 2015-09-11 一种数据重传的方法及装置

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