WO2017041288A1 - Data retransmission method and apparatus - Google Patents

Abstract

Embodiments of the present application provide a data retransmission method and apparatus, relating to the technical field of communications. The method comprises: receiving data transmitted by a transmit end; when detecting that the data is not decoded correctly, determining the number of retransmissions of the data, wherein the number of retransmissions of the data is the number of transmissions of the data during the next retransmission; encoding the number of retransmissions of the data and transmitting the code as a transmission indication to the transmit end by using the first three timeslots of an uplink enhanced-hybrid automatic repeat request indicator channel (E-HICH), wherein the first three timeslots of the E-HICH allow configuration of eight encoding formats. By means of the present invention, more types of feedback contents can be returned to the transmit end by using the first three timeslots of the E-HICH, so that a more specific number of retransmissions can be accurately fed back to the transmit end, thereby reducing power consumption and interference.

Description

Method and device for data retransmission Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for data retransmission.

Background technique

In order to solve the problem of coverage enhancement of MTC (Machine type communication), a real HARQ (Hybrid Automatic Repeat reQuest) implementation method is proposed. 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. In addition to the failure to correctly receive (NACK) information, the target SINR (Signal to Interference plus Noise Ratio) can be compared to estimate the number of retransmissions of the next HARQ transmission, and then the number of retransmissions. The information informs the sender of the behavior.

At present, in order to carry the ACK/NACK and retransmission times information, a signaling bearer mode is proposed, 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:

01 01 01

The inventors have found that the prior art has at least the following problems:

Due to the problem of the coding format, only four kinds of feedback results can be transmitted, and in the four feedback results, because the step size of the above HARQ mechanism design is large, the number of retransmissions must be more than the number of retransmissions actually needed. As a result, the power overhead is increased and the interference is increased.

Summary of the invention

In order to solve the defects of the prior art, 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:

Receiving data sent by the sender;

Determining the number of retransmissions of the data when the data is not correctly decoded; wherein the number of retransmissions of the data is the number of times the data is transmitted at the next retransmission;

Encoding the number of retransmissions of the data, and transmitting 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 E-HICH The first three time slots allow eight encoding formats to be configured.

In a first possible implementation manner of the first aspect, the determining the number of retransmissions of the data includes:

Estimating the number of retransmissions based on 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 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;

And if the estimated number of retransmissions is less than the number of initial transmissions of the data, determining the calculated number of retransmissions as the number of retransmissions of the data fed back to the transmitting end.

In a second possible implementation manner of the first aspect, the encoding, by the retransmission of the data, includes:

Determining, in a plurality of preset numerical ranges, a range of values to which the number of initial transmissions of the data belongs;

Obtaining an encoding rule corresponding to the range of values;

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:

And 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;

Decoding the transmission indication to determine whether the data needs to be retransmitted to the receiving end;

If the data is to be retransmitted to the receiving end, 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.

In a first possible implementation manner of the second aspect, the obtaining, by the received indication, the retransmission times of the data indicated by the receiving end, includes:

Determining, in a plurality of preset numerical ranges, a range of values to which the number of initial transmissions of the data belongs;

Obtaining an encoding rule corresponding to the range of values;

Determining the number of retransmissions of the data in the encoding rule based on the decoded transmission indication.

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.

In a first possible implementation manner of the third aspect, 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 ;

And 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.

In a second possible implementation manner of the third aspect, 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;

And 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.

The fourth aspect, 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;

And a second sending module, configured to send the data to the receiving end according to the number of retransmissions of the data.

In a first possible implementation manner of the fourth aspect, 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;

And 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 The gap allows configuration of eight encoding formats.

In a first possible implementation manner of the fifth aspect, 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.

In a second possible implementation manner of the fifth aspect, 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 sixth aspect, 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.

In a first possible implementation manner of the sixth aspect, 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 beneficial effects of the technical solutions provided by the embodiments of the present invention are:

When the detected data is not correctly decoded, 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.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative labor, Other drawings can also be obtained from these figures.

1 is a flowchart of a method for data retransmission provided by Embodiment 1 of the present invention;

2 is a flowchart of a method for data retransmission provided by Embodiment 2 of the present invention;

3 is a flowchart of a method for data retransmission provided by Embodiment 3 of the present invention;

4 is a schematic structural diagram of an apparatus for data retransmission provided by Embodiment 4 of the present invention;

5 is a schematic structural diagram of an apparatus for data retransmission provided by Embodiment 5 of the present invention;

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.

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Example 1

The embodiment of the invention provides a method for data retransmission, see FIG. 1 . The method includes:

101: Receive data sent by the sending end;

102: Determine, when the data is not correctly decoded, determine the number of retransmissions of the data; wherein, the number of retransmissions of the data is the number of times the data is sent in the next retransmission;

103: Encode the number of retransmissions of the data, and send the code as a transmission indication to the transmitting end through the first three time slots of the E-HICH; the first three time slots of the E-HICH allow eight encoding formats to be configured.

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.

In addition, the executor of the embodiment of the present invention may be a user equipment or a base station. When 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.

In the embodiment of the present invention, when the detected data is not correctly decoded, 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. 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.

Example 2

The embodiment of the invention provides a method for data retransmission, see FIG. 2 . The method includes:

201: A transmission indication sent by a receiving end of the received data, where the transmission indication is stored in 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 encoding formats to be configured. ;

202: Decoding a transmission indication, determining whether it is required to retransmit data to the receiving end;

203: 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, where the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission;

204: Send data to the receiving end according to the number of retransmissions of the data.

The embodiments of the present invention are applicable to the GSM, UMTS, and LTE systems, and are not limited herein.

In addition, the executor of the embodiment of the present invention may be a user equipment or a base station. When 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.

In the embodiment of the present invention, 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.

Example 3

An embodiment of the present invention provides a method for data retransmission, as shown in FIG. 3. The method includes:

301: Receive data sent by the sending end.

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.

In addition, 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.

Optionally, when the data is correctly decoded, 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.

Slot 0 Slot 1 Slot 2 Transmission indication 1 1 1 ACK

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.

302: Determine, when the data is not correctly decoded, determine the number of retransmissions of the data; wherein the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission.

The manner of verifying whether the data is correctly decoded is a prior art, and details are not described herein again.

Upon receiving the data, 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).

In this step, the manner of calculating the number of retransmissions of data can be implemented by the following steps:

3021: Estimate the number of retransmissions based on the detected signal to interference plus noise ratio.

First, 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.

3022: 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.

Among them, the number of initial transmissions of data is recorded as N.

If M>=N, it is necessary to inform the sender: to perform a complete retransmission, that is, according to the number of initial transmissions N as the number of retransmissions of the next transmission of the data.

3023: If the estimated number of retransmissions is less than the number of initial transmissions of data, the calculated number of retransmissions is determined as the number of retransmissions of data fed back to the transmitting end.

If M < N, it is necessary to inform the sender that retransmission is performed according to the number of times of M, that is, the number of retransmissions M is used as the number of retransmissions of the next transmission of the data.

303: Encode the number of retransmissions of the data, and send the code as a transmission indication to the transmitting end through the first three time slots of the E-HICH; the first three time slots of the E-HICH allow eight encoding formats to be configured.

Wherein, 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.

Optionally, 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.

Therefore, the implementation of step 303 can be implemented by the following steps:

3031: determining, in a plurality of preset numerical ranges, a range of values to which the initial number of times of data belongs;

3032: Obtain an encoding rule corresponding to the value range;

3033: Encoding in the coding rule according to an encoding format corresponding to the number of retransmissions of the data;

3034: Send the code as a transmission indication to the transmitting end through the first three time slots of the E-HICH.

For example, the following table will describe different encoding ranges for different values of N.

When N <= 8, the information indications in the first three slots of the E-HICH channel are as shown in Table 2:

Slot 0 Slot 1 Slot 2 Transmission indication 1 1 1 ACK 0 0 0 NACK, completely retransmitted 0 0 1 NACK, retransmit 1 time 0 1 0 NACK, retransmit 2 times 0 1 1 NACK, retransmitted 3 times 1 0 0 NACK, retransmitted 4 times 1 0 1 NACK, retransmit 5 times 1 1 0 NACK, retransmitted 6 times

Table 2

When 8 < N <= 16, the information indications in the first three slots of the E-HICH channel are as shown in Table 3:

Slot 0 Slot 1 Slot 2 Transmission indication 1 1 1 ACK 0 0 0 NACK, completely retransmitted 0 0 1 NACK, retransmit 2 times 0 1 0 NACK, retransmitted 4 times 0 1 1 NACK, retransmitted 6 times 1 0 0 NACK, retransmitted 8 times 1 0 1 NACK, retransmit 10 times 1 1 0 NACK, retransmit 12 times

table 3

When 16<N<=32, the information indications in the first three slots of the E-HICH channel are as shown in Table 4:

Slot 0 Slot 1 Slot 2 Transmission indication 1 1 1 ACK 0 0 0 NACK, completely retransmitted 0 0 1 NACK, retransmitted 4 times 0 1 0 NACK, retransmitted 8 times 0 1 1 NACK, retransmit 12 times 1 0 0 NACK, retransmitted 16 times 1 0 1 NACK, retransmitted 20 times 1 1 0 NACK, retransmitted 24 times

Table 4

Optionally, when 8<N<=16, the information indication in the first three slots of the E-HICH channel may also be as shown in Table 5:

Slot 0 Slot 1 Slot 2 Transmission indication 1 1 1 ACK 0 0 0 NACK, completely retransmitted 0 0 1 NACK, retransmit 2 times 0 1 0 NACK, retransmitted 3 times 0 1 1 NACK, retransmitted 4 times 1 0 0 NACK, retransmit 5 times

1 0 1 NACK, retransmitted 6 times 1 1 0 NACK, retransmitted 7 times

table 5

Optionally, when N<=8, the information indication in the first three slots of the E-HICH channel may also be as shown in Table 6:

Slot 0 Slot 1 Slot 2 Transmission indication 1 1 1 ACK 0 0 0 NACK, completely retransmitted 0 0 1 NACK, retransmitted 4 times 0 1 0 NACK, retransmitted 6 times 0 1 1 NACK, retransmitted 8 times 1 0 0 NACK, retransmit 10 times 1 0 1 NACK, retransmit 12 times 1 1 0 NACK, retransmit 14 times

Table 6

Optionally, when 16<N<=32, the information indication in the first three slots of the E-HICH channel may also be as shown in Table 7:

Slot 0 Slot 1 Slot 2 Transmission indication 1 1 1 ACK 0 0 0 NACK, completely retransmitted 0 0 1 NACK, retransmitted 8 times 0 1 0 NACK, retransmit 12 times 0 1 1 NACK, retransmitted 16 times 1 0 0 NACK, retransmitted 20 times 1 0 1 NACK, retransmitted 24 times 1 1 0 NACK, retransmitted 28 times

Table 7

304: The transmission indication sent by the receiving end of the data receiving by the transmitting end, the transmission indication is sent through the first three time slots of the E-HICH, and the first three time slots of the E-HICH allow eight encoding formats to be configured.

305: Decode the transmission indication to determine whether data needs to be retransmitted to the receiving end.

Specifically, 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.

In addition, 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.

306: 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, where the number of retransmissions of the data is the number of times the data is transmitted in the next retransmission.

Wherein, 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. An indication of the number of retransmissions other than six.

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.

3061: determining, in a plurality of preset numerical ranges, a range of values to which the initial number of times of data belongs;

3062: Obtain an encoding rule corresponding to the value range;

3063: Determine, according to the decoded transmission indication, the number of retransmissions of the data in the encoding rule.

307: Send data to the receiving end according to the number of retransmissions of the data.

If this retransmission still receives the error, it will still be re-executed according to the above procedure.

In the embodiment of the present invention, when the detected data is not correctly decoded, 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. 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.

In addition, by obtaining the number of retransmissions received by the receiving end in the first three time slots of the E-HICH, 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.

Embodiment 4

An embodiment of the present invention provides a device for data retransmission. Referring to FIG. 4, 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.

Optionally, 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;

And 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.

Optionally, 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.

In the embodiment of the present invention, when the detected data is not correctly decoded, 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. 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 5

An embodiment of the present invention provides a device for data retransmission. Referring to FIG. 5, 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.

Optionally, 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;

And a fifth determining unit, configured to determine, according to the decoded transmission indication, the number of retransmissions of the data in the encoding rule.

In the embodiment of the present invention, 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.

Embodiment 6

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.

Optionally, 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.

Optionally, 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.

In the embodiment of the present invention, when the detected data is not correctly decoded, 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. 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.

Example 7

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.

Optionally, 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.

In the embodiment of the present invention, 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.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims (15)

A method for data retransmission, characterized in that the method comprises: Receiving data sent by the sender; Determining the number of retransmissions of the data when the data is not correctly decoded; wherein the number of retransmissions of the data is the number of times the data is transmitted at the next retransmission; Encoding the number of retransmissions of the data, and transmitting 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 E-HICH The first three time slots allow eight encoding formats to be configured. The method according to claim 1, wherein the determining the number of retransmissions of the data comprises: Estimating the number of retransmissions based on 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 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; And if the estimated number of retransmissions is less than the number of initial transmissions of the data, determining the calculated number of retransmissions as the number of retransmissions of the data fed back to the transmitting end. The method according to claim 1, wherein the encoding the number of retransmissions of the data comprises: Determining, in a plurality of preset numerical ranges, a range of values to which the number of initial transmissions of the data belongs; Obtaining an encoding rule corresponding to the range of values; Encoding is performed in the encoding rule according to an encoding format corresponding to the number of retransmissions of the data. A method for data retransmission, characterized in that the method comprises: And 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; Decoding the transmission indication to determine whether the data needs to be retransmitted to the receiving end; If the data is to be retransmitted to the receiving end, 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 method according to claim 4, wherein the obtaining the number of retransmissions of the data indicated by the receiving end in the decoded transmission indication comprises: Determining, in a plurality of preset numerical ranges, a range of values to which the number of initial transmissions of the data belongs; Obtaining an encoding rule corresponding to the range of values; Determining the number of retransmissions of the data in the encoding rule based on the decoded transmission indication. A device for data retransmission, characterized in that the device comprises: 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 device according to claim 6, wherein the first determining module comprises: 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 ; And 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 device according to claim 7, wherein the first sending module comprises: 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 code a cell corresponding to the number of retransmissions of the data in the coding rule Encoding. A device for data retransmission, characterized in that the device comprises: 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; And a second sending module, configured to send the data to the receiving end according to the number of retransmissions of the data. The device according to claim 9, wherein the obtaining module comprises: 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; And 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 receiving end device, wherein the receiving end device comprises: a processor, a receiver, and a transmitter; The receiver is configured to receive data sent by the sending end; 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 The gap allows configuration of eight encoding formats. The receiving device according to claim 11, wherein The processor is further configured to estimate a 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 the data, the initial transmission of the data The number of times is determined 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, determining the calculated number of retransmissions as feedback to the sending The number of retransmissions of the data at the end. The receiving device according to claim 11, wherein 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 format corresponding to the number of retransmissions of data is encoded. A transmitting device, characterized in that the repeater comprises: 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 transmitting device according to claim 14, wherein 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; and according to the decoded indication of the decoding, The number of retransmissions of the data is determined in the encoding rule.

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