CN113055133B

CN113055133B - Hybrid automatic repeat request HARQ response method, device, equipment and medium

Info

Publication number: CN113055133B
Application number: CN202110267624.XA
Authority: CN
Inventors: 辜开丽; 王欢
Original assignee: Chenxin Technology Co ltd
Current assignee: Chenxin Technology Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2022-10-14
Anticipated expiration: 2041-03-11
Also published as: CN113055133A

Abstract

The embodiment of the invention discloses a hybrid automatic repeat request (HARQ) response method, a device, equipment and a medium. The method comprises the following steps: generating at least one HARQ response message according to the receiving result of the data frame sent by the sender; generating a target HARQ frame according to each HARQ response message, and at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence; and sending the target HARQ frame to a sender to indicate the sender to detect the signal of the time slot position corresponding to the effective cyclic shift value according to the signal of the time slot position corresponding to the reserved cyclic shift value in the target HARQ frame. The embodiment of the invention can improve the accuracy of HARQ feedback signal detection and simultaneously avoid increasing the channel estimation complexity of the HARQ system node.

Description

Hybrid automatic repeat request HARQ response method, device, equipment and medium

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a hybrid automatic repeat request (HARQ) response method, a device, equipment and a storage medium.

Background

MESH (wireless MESH network) is a new type of wireless network that is completely different from the conventional wireless network. The method is a technology for dynamically establishing new links to connect other nodes, has the advantages of self-organizing, self-repairing, multi-hop cascade, node self-management and the like, and can greatly reduce the network deployment cost and complexity. Any node in the network may act as both an access point and a router, each of which may send and receive signals, and each of which may be in direct communication with one or more peer nodes. In the wireless MESH network, the problem of guaranteeing the reliability of data transmission generated in the multi-hop process of communication needs to be considered. The reliable transmission of the multi-hop link can be guaranteed by using an HARQ (Hybrid Automatic Repeat Request) mechanism and an ARQ (Automatic Repeat Request) function proposed in a system architecture of 3GPP (3 rd Generation Partnership Project).

The HARQ mechanism is a technique that combines FEC (Forward Error Correction) and ARQ methods. FEC adds redundant information to enable the receiving end to correct some errors, thereby reducing the number of retransmissions. For the error that cannot be corrected by FEC, the receiving end requests the transmitting end to retransmit data through an ARQ mechanism. The receiving end uses an error detection code, usually a Cyclic Redundancy Check (CRC) Check, to detect whether the received data packet is erroneous. If there is no error, the receiving end will send an ACK (Acknowledgement) to the sending end, and after receiving the ACK, the sending end will send the next data packet. If the data packet is wrong, the receiving end discards the data packet and sends a Negative-acknowledgement (NACK) to the sending end, and the sending end retransmits the same data after receiving the NACK.

However, a specific network topology in the system may cause inconsistency of a motion state of each node, inconsistency of time, power, and frequency offset of data of other neighboring nodes received by each node, and in an HARQ mechanism, it may cause that a current receiving node may not correctly resolve ACK/NACK of each neighboring node, increase complexity and accuracy of channel estimation of a detection node, and have a very high requirement on terminal data processing capability.

Disclosure of Invention

Embodiments of the present invention provide a method, an apparatus, a device, and a medium for HARQ response, so as to improve accuracy of HARQ feedback signal detection and avoid increasing channel estimation complexity of HARQ system nodes.

In a first aspect, an embodiment of the present invention provides a hybrid automatic repeat request HARQ response method, including:

generating at least one HARQ response message according to the receiving result of the data frame sent by the sender, wherein each HARQ response message is used for synchronous feedback in the same HARQ frame;

generating a target HARQ frame according to each HARQ response message, and at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence;

the number of the effective cyclic shift value is consistent with that of the HARQ response information, the time slot position corresponding to the effective cyclic shift value in the target HARQ frame is filled with a modulation signal determined by the HARQ response information, the target base sequence and the effective cyclic shift value, and the time slot position corresponding to the reserved cyclic shift value is vacant;

and sending the target HARQ frame to a sender to indicate the sender to detect the signal of the time slot position corresponding to the effective cyclic shift value according to the signal of the time slot position corresponding to the reserved cyclic shift value in the target HARQ frame.

In a second aspect, an embodiment of the present invention provides a hybrid automatic repeat request HARQ response method, including:

continuously transmitting at least one data frame to a receiver, and receiving a target HARQ frame fed back by the receiver; the target HARQ frame comprises HARQ response information fed back to each data frame by a receiver;

acquiring at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to a target base sequence appointed by the receiver;

and detecting the signal of the time slot position corresponding to the effective cyclic shift value by using the signal of the time slot position corresponding to the reserved cyclic shift value of the preset target base sequence in the target HARQ frame.

In a third aspect, an embodiment of the present invention further provides a hybrid automatic repeat request HARQ response apparatus, including:

a response information generating module, configured to generate at least one HARQ response information according to a reception result of a data frame sent by a sender, where each HARQ response information is used for performing synchronous feedback in the same HARQ frame;

a target HARQ frame generation module, configured to generate a target HARQ frame according to each HARQ response information, and at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence;

and the target HARQ frame sending module is used for sending the target HARQ frame to the sender so as to indicate the sender to detect the signal of the time slot position corresponding to the effective cyclic shift value according to the signal of the time slot position corresponding to the reserved cyclic shift value in the target HARQ frame.

In a fourth aspect, an embodiment of the present invention further provides a hybrid automatic repeat request HARQ response apparatus, including:

a target HARQ frame receiving module, configured to continuously send at least one data frame to a receiver, and receive a target HARQ frame fed back by the receiver; the target HARQ frame comprises HARQ response information fed back to each data frame by a receiver;

a cyclic shift value obtaining module, configured to obtain at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to a target base sequence, where the valid cyclic shift value and the reserved cyclic shift value are agreed by the receiver;

and the signal detection module is used for detecting the signal of the time slot position corresponding to the effective cyclic shift value by using the signal of the time slot position corresponding to the reserved cyclic shift value of the preset target base sequence in the target HARQ frame.

In a fifth aspect, an embodiment of the present invention further provides a computer device, where the computer device includes:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement a hybrid automatic repeat request, HARQ, response method as provided by any embodiment of the invention.

In a sixth aspect, an embodiment of the present invention further provides a computer storage medium, on which a computer program is stored, where the program is executed by a processor to implement the HARQ response method provided in any embodiment of the present invention.

The embodiment of the invention generates HARQ response information according to the receiving result of the data frame, generates a target HARQ frame according to the HARQ response information, a predetermined target base sequence and an effective cyclic shift value predetermined by the data frame sender, and is used for feeding back the receiving result to the sender so as to enable the sender to detect the target HARQ frame according to the predetermined reserved cyclic shift value, and can determine the detection threshold value at the optimal position to accurately obtain the fed-back receiving result, thereby reducing the influence of the power difference between feedback signals sent by different nodes on the detection performance, improving the detection accuracy of the HARQ feedback signals and avoiding increasing the channel estimation complexity of the HARQ system nodes.

Drawings

Fig. 1 is a flowchart of a hybrid automatic repeat request HARQ response method according to an embodiment of the present invention.

Fig. 2 is a schematic time domain format diagram of a target HARQ frame according to an embodiment of the present invention.

Fig. 3 is a flowchart of a HARQ response method according to a second embodiment of the present invention.

Fig. 4 is a flowchart illustrating a method for generating a baseband HARQ frame according to a second embodiment of the present invention.

Fig. 5 is a flowchart illustrating a method for generating a target HARQ frame according to a second embodiment of the present invention.

Fig. 6 is a flowchart of a HARQ response method according to a third embodiment of the present invention.

Fig. 7 is a schematic diagram of a detection domain of a target HARQ frame according to a third embodiment of the present invention.

Fig. 8 is a flowchart of a hybrid automatic repeat request HARQ response method according to a fourth embodiment of the present invention.

Fig. 9 is a flowchart illustrating a target HARQ frame detection method according to a fourth embodiment of the present invention.

Fig. 10 is a flowchart illustrating a further target HARQ frame detection method according to a fourth embodiment of the present invention.

Fig. 11 is a schematic flow chart of a virtual inspection filtering method according to a fourth embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a HARQ response apparatus according to a fifth embodiment of the present invention.

Fig. 13 is a schematic structural diagram of a HARQ response apparatus according to a sixth embodiment of the present invention.

Fig. 14 is a schematic structural diagram of a computer device according to a fourth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, subprograms, and the like.

Example one

Fig. 1 is a flowchart of a hybrid automatic repeat request HARQ response method according to an embodiment of the present invention, where this embodiment is applicable to generating and sending an HARQ frame according to a reception result of a data frame, so that a data frame sender knows the reception result of the data frame, and this method may be executed by a hybrid automatic repeat request HARQ response apparatus according to an embodiment of the present invention, where the apparatus may be implemented by software and/or hardware, and may generally be integrated in a computer device, such as a data frame receiver. Accordingly, as shown in fig. 1, the method comprises the following operations:

s110, generating at least one HARQ response message according to a reception result of the data frame sent by the sender.

Wherein, each HARQ response information is used for synchronous feedback in the same HARQ frame.

Specifically, the sender may be a terminal in an HARQ system that sends a communication signal to a receiver that performs the method, and the HARQ system may be a communication system having an HARQ mechanism. The data frame may be data in units of a frame in a communication signal transmitted by a transmitting side. The reception result may include reception success or reception failure. The HARQ response information may be information determined according to a reception result of the data frame, and may characterize a reception success or a reception failure of the data frame. The HARQ frame may be data generated in units of frames according to the HARQ response information, and is used to feed back to the sender, so that the sender obtains a reception result of the receiver node for the corresponding data frame.

Accordingly, in the HARQ system, the sender may send a data frame to the receiver, and the receiver may detect a reception result of the data frame within an agreed time for receiving the data frame. If the receiver detects that the data frame is not received or the decoding of the data frame is wrong, the receiving result of the data frame can be the receiving failure; if the data frame is detected to be received and decoded successfully, the result of receiving the data frame may be that the data frame is received successfully.

Further, the receiving side may generate HARQ response information according to a reception result of the data frame. According to the HARQ mechanism, the HARQ response information generated by the receiver may be ACK information, and the encoded value may be, for example, 1, which represents successful reception, according to the result of receiving the data frame that the reception is successful; according to the reception result of the data frame being reception failure, the HARQ response information generated by the receiving side may be NACK information, and the coding value may be, for example, 0, which indicates reception failure. Optionally, the sender may send at least one data frame in sequence, and the receiver may obtain a reception result of each data frame within the reception time corresponding to the data frame, and generate an HARQ response message in real time according to the reception result. The number of HARQ response messages synchronously fed back in the same HARQ frame may be preset.

Exemplarily, ACK/NACK information of at most 3 bits is supported in the same HARQ frame, that is, the number of HARQ response information fed back synchronously is 3, after the sender sends the 0 th frame data frame, the receiver detects reception failure within the 0 th frame reception time, and generates NACK information; then after the sender sends the 1 st frame data frame, the receiver detects that the receiving is successful within the 1 st frame receiving time, and generates ACK information; after the sender sends the 2 nd frame data frame, the receiver detects the receiving failure in the 2 nd frame receiving time, and generates NACK information, and the three HARQ response information can be fed back to the sender in the same HARQ frame; after the sender continues to send the frame 3, the frame 4 and the frame 5 in sequence, the receiver sequentially generates three corresponding HARQ response messages, and then the three corresponding HARQ response messages can be fed back to the sender in the next HARQ frame. By analogy, the receiver can feed back the reception results of all data frames to the sender through the HARQ frame.

And S120, generating a target HARQ frame according to each HARQ response message, at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence.

The number of the effective cyclic shift value is consistent with that of the HARQ response information, the time slot position corresponding to the effective cyclic shift value in the target HARQ frame is filled with a modulation signal determined by the HARQ response information, the target base sequence and the effective cyclic shift value, and the time slot position corresponding to the reserved cyclic shift value is vacant.

Specifically, the target base sequence may be a sequence for generating a baseband signal. The target base sequence can be cyclically shifted by adopting different cyclic shift values to generate different new sequences, and the generated new sequences can also be used for generating baseband signals. The effective cyclic shift value may be a cyclic shift value adopted when the target base sequence generates the effective sequence through cyclic shift, and the effective sequence may generate a baseband signal for carrying HARQ response information. The reserved cyclic shift value may be a cyclic shift value employed when the target base sequence generates a reserved sequence through cyclic shift, the reserved sequence not being used to generate a signal. The target HARQ frame may be frame format data having a preset time domain format, and include slot positions corresponding to each effective cyclic shift value and each reserved cyclic shift value, respectively, where a modulation signal in the slot position corresponding to each effective cyclic shift value may carry HARQ response information, and the target HARQ frame may be used to be sent to a data frame sender to feed back at least one HARQ response information carried by the data frame sender.

Correspondingly, because the preset target base sequence has a fixed length, the available cyclic shift value can be determined according to the cyclic shift step length adopted by the system, and the same number of effective cyclic shift values can be determined in the available cyclic shift values according to the number of the HARQ response information which can be carried in the same HARQ frame, so that the remaining available cyclic shift values are determined as the reserved cyclic shift values. Alternatively, the target base sequence may be a ZC (Zadoff-Chu) sequence, which belongs to a constant-envelope zero-correlation sequence and has good cross-correlation and auto-correlation characteristics.

Further, the data frame receiver may sequentially perform cyclic shift on a preset target base sequence by using each available cyclic shift value, and may generate an effective sequence when the adopted cyclic shift value is an effective cyclic shift value, so that a baseband signal may be generated by using the effective sequence, and the baseband signal is modulated according to the corresponding HARQ response information to obtain a modulated signal; when the adopted cyclic shift value is a reserved cyclic shift value, the signal is not generated by adopting the generated reserved sequence. When the target HARQ frame is generated, the modulation signals are respectively filled in the slot positions corresponding to the corresponding effective cyclic shift values, and then the slot positions corresponding to the reserved cyclic shift values are left empty, which may only include noise signals. The time slot positions in the target HARQ frame are arranged in the target HARQ frame according to the time domain sequence, and all signals filled in the time slot positions are synchronously sent to the data frame sender, so that the data frame sender can sequentially read the signals in the time slot positions.

For example, the available cyclic shift values may include 0, 1, 2, 3 and 4, where 0, 1 and 3 are determined as valid cyclic shift values, 2 and 4 are determined as reserved cyclic shift values, and then the cyclic shift value 0 is used to perform cyclic shift on the target base sequence to obtain a sequence ZC ₀ Generating a baseband signal and modulating the baseband signal by using the HARQ response information NACK information corresponding to the 0 th frame data frameTo obtain a corresponding modulation signal a ₀ The coding value is 0; performing cyclic shift on the target base sequence by adopting a cyclic shift value 1 to obtain a sequence ZC ₁ Generating a baseband signal, and modulating the baseband signal by using the HARQ response information ACK information corresponding to the 1 st frame data frame to obtain a corresponding modulated signal a ₁ The code value is 1; performing cyclic shift on the target base sequence by adopting a cyclic shift value 2 to obtain a sequence ZC ₂ At this time, no signal is generated; performing cyclic shift on the target base sequence by adopting a cyclic shift value 3 to obtain a sequence ZC ₃ Generating a baseband signal, and modulating the baseband signal by using the HARQ response information NACK information corresponding to the 2 nd frame data frame to obtain a corresponding modulation signal a ₂ The coding value is 0; performing cyclic shift on the target base sequence by adopting a cyclic shift value 4 to obtain a sequence ZC ₂ At this time, no signal is generated. The modulation signal a is converted into a ₀ 、a ₁ And a ₂ The slot positions corresponding to the effective

cyclic shift values

0, 1 and 3 are respectively filled, the slot positions corresponding to the reserved cyclic shift values 2 and 4 are empty due to no signal generation, and may only include noise signals, the slot positions sequentially arranged in the time domain of one generated target HARQ frame sequentially correspond to the

cyclic shift values

0, 1, 2, 3 and 4, information carried by the target HARQ frame sequentially is NACK information, noise, ACK information, noise and NACK information in the time domain, and the corresponding code value may be 00100.

Optionally, fig. 2 is a schematic time domain format diagram of a target HARQ frame according to an embodiment of the present invention. As shown in fig. 2, the target HARQ frame may include a CP (Cyclic Prefix) and a preamble sequence, wherein the time length of the Cyclic Prefix is T _CP The length of the leader sequence is T _SEQ . M Resource Blocks (RB) resources can be mapped on a frequency domain, m is a positive integer, and the position of the frequency domain is fixed on the nth _harq One RB position, n _harq The number of the positive integers is not more than m, and optionally, the positive integers can be fixed on the center RB, so that the up-down sampling flow of receiving and sending is simplified. Subcarrier spacing of Δ f _ACK T can be 1.25kHz, 2.5kHz, 5kHz and 7.5kHz _SEQ Length n (1/delta)f _ACK ) And n is a positive integer. T is _CP Length and guard interval length T _GAP The design can be made according to the practical application scenario, for example, the distance between the support nodes is 14km, and the selectable Δ f _ACK Taking the signal at 1.25kHz _SEQ Is 2476Ts _CP 3168Ts is taken, and a guard interval T is adopted _GAP With a length of 2976Ts, the total length is 1 subframe length of 1ms.

S130, sending the target HARQ frame to the sender to indicate the sender to detect the signal of the time slot position corresponding to the effective cyclic shift value according to the signal of the time slot position corresponding to the reserved cyclic shift value in the target HARQ frame.

Accordingly, one target HARQ frame may be transmitted to the transmitting side at one frame time. The sender can determine the time slot positions corresponding to the cyclic shift values in the target HARQ frame respectively, and obtain the signals at the time slot positions, so that the receiving result of the data frame represented by the modulation signals in the time slot positions corresponding to the effective cyclic shift values is obtained. Optionally, the sender may further calculate the noise floor power according to the noise signal in the timeslot position corresponding to each reserved cyclic shift value, thereby determining a threshold value for detecting the modulation signal of the target HARQ frame, and determining the coding value and the HARQ response information corresponding to each modulation signal according to the threshold value.

Exemplarily, a sender calculates power values of noise signals in time slot positions corresponding to reserved cyclic shift values 2 and 4 as detection threshold values, obtains the power values of modulation signals when detecting the modulation signals in the time slot positions corresponding to effective

cyclic shift values

0, 1 and 3, if the power values of the modulation signals are greater than the detection threshold values, the corresponding code values are 1, and harq response information is ACK information; if the power value of the modulation signal is not larger than the detection threshold value, the corresponding code value is 0, and the HARQ response information is NACK information.

The embodiment of the invention provides a hybrid automatic repeat request (HARQ) response method, which comprises the steps of generating HARQ response information according to a receiving result of a data frame, generating a target HARQ frame according to the HARQ response information, a predetermined target base sequence and an effective cyclic shift value predetermined by a data frame sender, feeding back the receiving result to the sender so as to enable the sender to detect the target HARQ frame according to a predetermined reserved cyclic shift value, determining a detection threshold value at an optimal position to accurately obtain the fed back receiving result, reducing the influence of power difference between feedback signals sent by different nodes on detection performance, improving the detection accuracy of the HARQ feedback signals and avoiding increasing the channel estimation complexity of HARQ system nodes.

Example two

Fig. 3 is a flowchart of a hybrid automatic repeat request HARQ response method according to a second embodiment of the present invention. The embodiments of the present invention are embodied on the basis of the above embodiments, and in the embodiments of the present invention, specific optional implementations of determining the valid cyclic shift value and the reserved cyclic shift value are given.

As shown in fig. 3, the method of the embodiment of the present invention specifically includes:

s210, determining an available cyclic shift value according to the preset sequence length of the target base sequence and the preset cyclic shift step length.

The sequence length may be a length parameter of a target base sequence, and the cyclic shift step size may be a step size parameter determined in the system when the target base sequence is cyclically shifted. The available cyclic shift value may be a cyclic shift value that may be employed when the target base sequence is cyclically shifted according to a cyclic shift step size.

Optionally, the sequence length of the target base sequence may be divided by a preset cyclic shift step size to obtain a result, and the result is rounded to obtain the number of available cyclic shift values, so as to determine the available cyclic shift values. Illustratively, if the sequence length N of the target base sequence _ZC To 839, a preset cyclic shift step size N _CS At 119, dividing the two values by a whole number of 7, then the available cyclic shift values can be obtained as 0, 1, 2, 3, 4, 5, and 6.

And S220, determining at least one effective cyclic shift value in the available cyclic shift values according to the single transmission total amount of the HARQ response information, and determining the available cyclic shift values except the effective cyclic shift values as reserved cyclic shift values.

The total single transmission amount may be the number of HARQ response information that can be carried at most in one HARQ frame.

Accordingly, the remaining available cyclic shift values, which may be selected from the available cyclic shift values as the valid cyclic shift values by the same number as the total number of single transmissions, may be reserved cyclic shift values, and each valid cyclic shift value may correspond to one HARQ response information.

Exemplary, in the above-mentioned sequence length N of the target base sequence _ZC 839, a preset cyclic shift step size N _CS In the example of 119, the available cyclic shift values include 0, 1, 2, 3, 4, 5 and 6, and if the total number of supported single transmissions is 3 bits, that is, 3 HARQ response information are carried, any three of the available cyclic shift values, for example, 2, 4 and 6, may be determined as valid cyclic shift values, and the remaining 0, 1, 3 and 5 may be determined as reserved cyclic shift values.

S230, generating at least one HARQ response message according to a reception result of the data frame transmitted by the sender.

S240, generating a target HARQ frame according to each HARQ response information, and at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence.

In an optional embodiment of the present invention, generating the target HARQ frame according to each HARQ response information, and at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to the preset target base sequence may include: performing cyclic shift processing on the target base sequence by using each effective cyclic shift value respectively to obtain cyclic shift sequences corresponding to each effective cyclic shift value respectively; carrying out frame format processing on the cyclic shift sequence to obtain a baseband HARQ frame; and modulating the baseband HARQ frame by using each HARQ response message to obtain the target HARQ frame.

The cyclic shift sequence may be a new sequence obtained by cyclically shifting the target base sequence. The base band HARQ frame may be frame format data filled with a base band signal in at least one slot position, has the same format as the target HARQ frame, and may be used to generate the target HARQ frame through modulation of HARQ response information. The frame format process may be an operation of generating a corresponding baseband HARQ frame according to at least one cyclic shift sequence, and each cyclic shift sequence may generate a baseband signal in one slot position of the baseband HARQ frame. The modulation process may be an operation of modulating a baseband signal in a slot position of a baseband HARQ frame according to HARQ response information, and the baseband signal in one slot position may be modulated according to each HARQ response information, respectively.

Correspondingly, each cyclic shift sequence corresponds to an effective cyclic shift value, and then after the frame format processing, the slot positions corresponding to each effective cyclic shift value in the obtained baseband HARQ frame are filled with baseband signals generated by the corresponding cyclic shift sequence, and the slot positions corresponding to the reserved cyclic shift values are left vacant. When the receiving end detects the receiving result of the data frame, the generated HARQ response information can modulate the baseband signal in the corresponding slot position, and finally the baseband signal in the slot position corresponding to each effective cyclic shift value of the baseband HARQ frame is modulated into a modulation signal carrying the HARQ response information, so as to obtain the target HARQ frame.

Optionally, when the ZC sequence is used as the target base sequence, cyclic shift processing may be performed on the ZC sequence according to the following formula:

wherein n is more than or equal to 0 _i ≤N _ZC -1，n _i ＝(n+ν _i ·N _CS )modN _ZC ，v _i For cyclic shift values, n _i To an initial shift value, N _ZC For sequence length, sequence lengths that can be supported include, but are not limited to 139, 571, 839, and 1151 _CS For the cyclic shift step, it may be set according to the supported dynamic time offset and the number of HARQ response information supported and carried by the target HARQ frame, where u is a physical root sequence number.

Exemplarily, fig. 4 is a flowchart illustrating a method for generating a baseband HARQ frame according to an embodiment of the present invention. As shown in fig. 4, the selected target sequence is a ZC sequence, the ZC sequence is subjected to cyclic shift processing according to the determined effective cyclic shift values v0, v1, and v2, and then the three obtained cyclic shift sequences are subjected to frame format processing, for example, the frame format processing may include DFT (Discrete Fourier Transform), resource mapping, FFT (Fast Fourier Transform), CP injection, and a process of passing through a sampling rate matching filter, frequency offset, and power adjustment, and the obtained time domain signal S (t) is a baseband HARQ frame.

The foregoing embodiment provides a method for generating a target HARQ frame from a target base sequence, where a baseband HARQ frame is obtained by performing frame format processing on cyclic shift sequences corresponding to all valid cyclic shift values, and then modulation is performed according to obtained HARQ response information, so as to implement feedback of an acceptance result of at least one data frame by using the target HARQ frame.

In an optional embodiment of the present invention, generating the target HARQ frame according to each HARQ response information, and at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to the preset target base sequence may include: acquiring a local baseband HARQ frame of a cyclic shift sequence corresponding to each prestored effective cyclic shift value; modulating the matched local baseband HARQ frame by using each HARQ response message to obtain a local modulation HARQ frame; and performing time domain superposition on the local modulation HARQ frame to obtain the target HARQ frame.

Each local baseband HARQ frame may be obtained by performing frame format processing on each cyclic shift sequence, and has the same time domain format as the target HARQ frame, and a baseband signal generated by the corresponding cyclic shift sequence is filled in a corresponding slot position. The local modulation HARQ frame may be obtained by modulating a baseband signal in a slot position of the local baseband HARQ frame according to the HARQ response information.

Correspondingly, in the local baseband HARQ frame obtained by performing frame format processing on the cyclic shift sequence, the slot position corresponding to the cyclic shift value of the cyclic shift sequence is filled with the baseband signal generated by the cyclic shift sequence, and other slot positions may be left blank. And modulating the local baseband HARQ frame according to the corresponding HARQ information, and then modulating a baseband signal in the time slot position of the local baseband HARQ frame into a modulation signal to generate a local modulation HARQ frame. Therefore, in each local modulation HARQ frame, a modulation signal is filled in a slot position corresponding to an effective cyclic shift value, and slot positions corresponding to reserved cyclic shift values are all vacant. And performing time domain superposition on the local modulation HARQ frame, wherein signals in corresponding time slot positions can be superposed, and then in the finally generated target HARQ frame, the signals in the time slot positions corresponding to the effective cyclic shift value are modulation signals in the time slot positions corresponding to the corresponding local modulation HARQ signals, and the time slot positions corresponding to the reserved cyclic shift value are vacant.

Exemplarily, fig. 5 is a flowchart illustrating a method for generating a target HARQ frame according to an embodiment of the present invention. As shown in fig. 4, the selected target sequence is a ZC sequence, and after cyclic shift processing is performed on the ZC sequence by using effective cyclic shift values v0, v1, and v2, frame format processing is performed on the obtained three cyclic shift sequences, for example, the frame format processing may include DFT, resource mapping, FFT, CP injection, a process of sampling rate matching filter, frequency offset, and power adjustment, and the obtained time domain signals S0 (t), S1 (t), and S2 (t) are local baseband HARQ frames. And sequentially generating HARQ response information which is BIT0, BIT1 and BIT2 according to the receiving results of the three data frames, respectively modulating the local baseband HARQ frames S0 (t), S1 (t) and S2 (t), performing time domain superposition on the obtained local modulation HARQ frames, and finally generating a target HARQ frame S (t).

Optionally, a local baseband HARQ frame of the cyclic shift sequence corresponding to each effective cyclic shift value may be generated in advance and stored, and when a target HARQ frame needs to be generated actually, the corresponding local baseband HARQ frame may be directly obtained according to each HARQ response information and modulated and superimposed. Further optionally, after each local baseband HARQ frame is generated, all target HARQ frames possibly obtained through modulation are generated in advance and stored, and then the matched target HARQ frame is selected according to the actually obtained HARQ response information to be transmitted. For example, for a target HARQ frame carrying three HARQ response information, if the coding values of ACK information and NACK information are 1 and 0, respectively, the target HARQ frames that can be generated and stored in advance may be 7 target HARQ frames with coding values of 001, 010, 100, 110, 101, 011, and 111 corresponding to the effective cyclic shift value, respectively.

The above embodiment provides a method for generating a target HARQ frame from a target base sequence, which includes performing frame format processing on cyclic shift sequences corresponding to all valid cyclic shift values to obtain a local baseband HARQ frame, performing pre-storage, and performing modulation and superposition according to actually obtained HARQ response information, so as to implement feedback of an acceptance result of at least one data frame by using the target HARQ frame, and meanwhile, simplify a processing process of an originating end of the target HARQ frame, and improve feedback efficiency of the acceptance result of the data frame.

And S250, sending the target HARQ frame to the sender to indicate the sender to detect the signal of the time slot position corresponding to the effective cyclic shift value according to the signal of the time slot position corresponding to the reserved cyclic shift value in the target HARQ frame.

The embodiment of the invention provides a hybrid automatic repeat request (HARQ) response method, which comprises the steps of generating HARQ response information according to a receiving result of a data frame, generating a target HARQ frame according to the HARQ response information, a predetermined target base sequence and an effective cyclic shift value predetermined by a data frame sender, feeding back the receiving result to the sender so as to enable the sender to detect the target HARQ frame according to a predetermined reserved cyclic shift value, determining a detection threshold value at an optimal position to accurately obtain the fed-back receiving result, reducing the influence of power difference between feedback signals sent by different nodes on detection performance, improving the detection accuracy of the HARQ feedback signals and avoiding increasing the channel estimation complexity of nodes of an HARQ system.

EXAMPLE III

Fig. 6 is a flowchart of a hybrid automatic repeat request HARQ response method according to a third embodiment of the present invention, where this embodiment is applicable to receive and detect a HARQ frame generated according to a reception result of a data frame, so as to obtain a situation of the reception result of the data frame, and this method may be executed by a hybrid automatic repeat request HARQ response apparatus according to the third embodiment of the present invention, where the apparatus may be implemented by software and/or hardware, and may be generally integrated in a computer device, such as a data frame sender. Accordingly, as shown in fig. 6, the method includes the following operations:

s310, continuously sending at least one data frame to a receiver, and receiving a target HARQ frame fed back by the receiver.

And the target HARQ frame comprises HARQ response information fed back to each data frame by a receiver.

Specifically, the data frame may be data in units of a frame in a communication signal transmitted to the receiving side. The target HARQ frame may be frame format data having a preset time domain format, and includes at least one slot position, and the modulation signal in the slot position may carry HARQ response information. The HARQ response information may be information determined by the receiving side according to a reception result of the data frame, and may characterize that the receiving side has succeeded or failed in receiving the data frame.

Correspondingly, in the HARQ system, the sender may send the data frame to the receiver within an agreed time for sending the data frame, and the receiver may generate a target HARQ frame and feed back the target HARQ frame to the data frame sender after acquiring a preset number of reception results for the data frame and generating HARQ response information according to the reception results.

S320, acquiring at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to the target base sequence appointed by the receiver.

Wherein the target base sequence may be a sequence for generating a baseband signal. The target base sequence can be cyclically shifted by adopting different cyclic shift values to generate different new sequences, and the generated new sequences can also be used for generating baseband signals. The effective cyclic shift value may be a cyclic shift value adopted when the target base sequence generates the effective sequence through cyclic shift, and the effective sequence may generate a baseband signal for carrying HARQ response information. The reserved cyclic shift value may be a cyclic shift value employed when the target base sequence generates a reserved sequence through cyclic shift, the reserved sequence not being used to generate a signal.

Correspondingly, the sender and the receiver of the data frame which are communicated with each other in the same system can agree on the effective cyclic shift value and the reserved cyclic shift value adopted by the system. The receiver can sequentially adopt each available cyclic shift value to perform cyclic shift on a preset target base sequence, and can generate an effective sequence when the adopted cyclic shift value is an effective cyclic shift value, so that a baseband signal can be generated by adopting the effective sequence, and the baseband signal is modulated according to corresponding HARQ response information to obtain a modulated signal; when the adopted cyclic shift value is a reserved cyclic shift value, the generated reserved sequence is not adopted to generate a signal. The target HARQ frame may be generated by the receiver filling the modulation signals in the slot positions corresponding to the corresponding effective cyclic shift values, respectively, and leaving the slot positions corresponding to the reserved cyclic shift values empty, and optionally, only the noise signal may be included in the slot positions corresponding to the reserved cyclic shift values. The time slot positions in the target HARQ frame are arranged in the target HARQ frame according to the time domain sequence, and all signals filled in the time slot positions are synchronously sent to the data frame sender, so that the data frame sender can sequentially read the signals in the time slot positions.

Further, the sender may determine, according to the agreed effective cyclic shift value and the reserved cyclic shift value, a time slot position corresponding to each cyclic shift value in the target HARQ frame, so as to determine a time slot position corresponding to each effective cyclic shift value and a time slot position corresponding to each reserved cyclic shift value.

S330, detecting the signal of the time slot position corresponding to the effective cyclic shift value by using the signal of the time slot position corresponding to the reserved cyclic shift value of the preset target base sequence in the target HARQ frame.

Correspondingly, the sender can detect a noise signal at a time slot position corresponding to each reserved cyclic shift value, calculate the power of the noise signal as the noise intensity of the system, detect a modulation signal at a time slot position corresponding to each effective cyclic shift value, calculate the power of the modulation signal, and determine the coding value of the modulation signal according to the magnitude relation between the power of the modulation signal and the power of the noise signal, optionally, if the power of the modulation signal is greater than the power of the noise signal, the coding value can be determined to be 1; if the modulation signal power is less than the noise signal power, the code value may be determined to be 0. The coded value corresponding to the HARQ response information may be agreed in advance with the receiver, the HARQ response information corresponding to each modulation signal may be determined according to the coded value, the HARQ response information corresponding to the coded value 1 may be ACK information to indicate successful reception, and the HARQ response information corresponding to the coded value 0 may be NACK information to indicate failed reception.

Fig. 7 is a schematic diagram of a detection domain of a target HARQ frame according to an embodiment of the present invention, where a noise reserved domain may be a timeslot position corresponding to each reserved cyclic shift value, and a transmitter may detect a noise signal therein to determine a noise power; the signal domain may be a time slot position corresponding to each effective cyclic shift value, and the sender may detect the modulation signal therein to obtain the power of the modulation signal, determine the coding value of the modulation signal according to the magnitude relationship between the power of the modulation signal and the power of the noise signal, and determine the HARQ response information and the reception result corresponding to each modulation signal according to the coding value.

The embodiment of the invention provides a hybrid automatic repeat request (HARQ) response method, which detects a target HARQ frame according to an effective cyclic shift value and a reserved cyclic shift value which are pre-agreed with a data frame receiver, can determine a detection threshold value at an optimal position to accurately obtain a feedback receiving result, reduces the influence of the power difference between feedback signals sent by different nodes on the detection performance, improves the detection accuracy of the HARQ feedback signals, and avoids increasing the channel estimation complexity of the HARQ system nodes.

Example four

Fig. 8 is a flowchart of a hybrid automatic repeat request HARQ response method according to a fourth embodiment of the present invention. In the embodiment of the present invention, a specific optional implementation manner is provided for detecting a signal of a slot position corresponding to an effective cyclic shift value by using a signal of a slot position corresponding to a reserved cyclic shift value of a preset target base sequence in a target HARQ frame.

As shown in fig. 8, the method of the embodiment of the present invention specifically includes:

s410, continuously sending at least one data frame to a receiver, and receiving a target HARQ frame fed back by the receiver.

And S420, acquiring at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to the target base sequence appointed by the receiver.

And S430, detecting the signal of the time slot position corresponding to the effective cyclic shift value by using the signal of the time slot position corresponding to the reserved cyclic shift value of the preset target base sequence in the target HARQ frame.

In an optional implementation manner of the embodiment of the present invention, S430 may specifically include:

and S431, determining a detection threshold value corresponding to the target HARQ frame according to a signal of a time slot position corresponding to a reserved cyclic shift value of a preset target base sequence in the target HARQ frame.

The detection threshold may be a power value of a signal in the slot position when the slot position of the target HARQ frame is empty, and may be used to determine a code value of a modulation signal in the slot position corresponding to the effective cyclic shift value.

Correspondingly, the receiver can determine the slot position corresponding to the reserved cyclic shift value in the target HARQ frame according to the agreed reserved cyclic shift value. Since the time slot position corresponding to the reserved cyclic shift value is vacant, no signal or only a noise signal is included in the type of time slot position, and the power value of the signal in the type of time slot position when the time slot position is vacant can be determined as the detection threshold value according to the power value of the signal in the type of time slot position. The detection threshold value may be used to determine a code value of the modulated signal in a slot position corresponding to the effective cyclic shift value.

In an optional implementation manner of the embodiment of the present invention, before determining, according to a signal of a slot position corresponding to a reserved cyclic shift value of a preset target base sequence in a target HARQ frame, a detection threshold corresponding to the target HARQ frame, the method further includes: the target HARQ frame is sequentially subjected to CP removal processing, FFT, frequency domain conjugate multiplication and IFFT (Inverse Fast Fourier Transform) with the local sequence.

Wherein, the CP removing process may be an operation of removing the CP in the target HARQ frame.

Accordingly, after the target HARQ frame with the preset format needs to be processed as described above, the sender may detect a signal in the slot position of the target HARQ frame and detect the power value of the signal.

Optionally, because the time when each HARQ frame sent by different receivers arrives at the sender may deviate, an advance window setting may be added during the CP removal process, so as to ensure that the signal power peak in the target HARQ frame after the CP removal process does not move out of the detection window. Illustratively, if CP is N in length corresponding to a 1.28M sample rate _CP The number of advance window points is N _adv The length of the CP data actually removed is N _CP -N _adv . Wherein, N _adv The design can be performed according to the maximum time-frequency offset actually supported by the system, and it is ensured that the peak position cannot move out of the current detection window due to the time offset and the frequency offset, for example, the current system needs to support the maximum time offset Δ t of ± 240Ts, the sampling rate corresponding to 1.28M is Δ τ = ± 10, and the peak offset due to the time offset is within Δ τ. The current system needs to support the maximum frequency deviation delta f of [ -5000Hz,5000Hz]The subcarrier spacing of ACK is 1.25kHz if the physical root sequence is selectedIf it is 1, then d _u =1, then the peak offset due to the maximum frequency offset is Δ τ' = ± 4d _u Inner, then N _adv Selecting N required to satisfy _adv > (| Δ τ' | + | Δ τ |), and N _adv ＜N _CP ，N _adv ＜N′ _CS - (Δ τ' + Δ τ), wherein

In the embodiment, the advance window setting is added, so that the signal power peak in the target HARQ frame can not move out of the detection window, the power detection result deviation caused by the fact that the peak position moves out of the current detection window due to time offset and frequency offset is avoided, and the accuracy of the detection result is ensured.

S432, respectively obtaining detection power values of the signals at the time slot positions corresponding to the effective cyclic shift values, and respectively comparing the detection power values with the detection threshold values.

The detected power value may be a power value of the detected signal at the slot position corresponding to each effective cyclic shift value.

Correspondingly, the receiver can determine the slot position corresponding to the effective cyclic shift value in the target HARQ frame according to the agreed effective cyclic shift value, thereby detecting the power value of the modulation signal therein. When the detection threshold value is the timeslot position of the target HARQ frame is empty, and the power value of the signal therein, it may be determined whether the power of the modulation signal is greater than the power of the system noise signal by comparing the detection power value of the modulation signal with the detection threshold value, so as to determine the coding value of the modulation signal.

S433, for the signal in the first slot position whose detection power value is greater than the detection threshold value, determining HARQ response information corresponding to the signal in the first slot position as positive acknowledgement information.

The first slot position may be any slot position filled with the modulation signal whose detection power value is greater than the detection threshold value in the target HARQ frame. The positive acknowledgement information may be information that indicates successful reception in the HARQ response information, and may be ACK information, for example.

Accordingly, a coded value corresponding to HARQ response information may be agreed in advance with the receiver, and positive acknowledgement information corresponds to a coded value of 1. When the receiving side successfully receives the data frame and generates that the HARQ response information is positive acknowledgement information, the receiving side may modulate the power of the corresponding baseband signal according to the code value 1 of the positive acknowledgement information, and if the receiving side determines that the power of the modulated signal is greater than the power of the system noise signal, the receiving side may determine that the code value corresponding to the modulated signal is 1, thereby determining that the corresponding HARQ response information is positive acknowledgement information.

S434, for the signal at the second time slot position whose detection power value is less than or equal to the detection threshold value, determining HARQ response information corresponding to the signal at the second time slot position as negative acknowledgement information.

The second slot position may be any slot position in which the modulation signal with the detection power value smaller than the detection threshold value is filled in the target HARQ frame. The negative acknowledgement information may be information for indicating reception failure in the HARQ response information, and may be NACK information, for example.

Accordingly, a coded value corresponding to HARQ response information may be agreed in advance with the receiver, and negative acknowledgement information corresponds to a coded value of 0. When the receiving side generates the HARQ response information as the negative acknowledgement information according to the reception failure of the data frame, the receiving side may modulate the power of the corresponding baseband signal according to the coding value 0 of the negative acknowledgement information, and if the receiving side determines that the power of the modulated signal is smaller than the power of the system noise signal, the receiving side may determine that only the noise signal is included in the corresponding slot position, and the coding value corresponding to the modulated signal is 0, thereby determining that the corresponding HARQ response information is the negative acknowledgement information.

In an optional implementation manner of the embodiment of the present invention, before detecting, by using a signal of a slot position corresponding to a reserved cyclic shift value of a preset target base sequence in a target HARQ frame, a signal of a slot position corresponding to an effective cyclic shift value, the method further includes: and carrying out frequency correction on the target HARQ frame.

Accordingly, in the case where the target HARQ frame is mapped at a non-central position, for example, the nth position where the frequency domain position is fixed _harq At one RB position, n _harq If the value is 0, frequency correction is needed, and the signal is moved to the central frequency point.

In an optional implementation manner of the embodiment of the present invention, before detecting, by using a signal of a slot position corresponding to a reserved cyclic shift value of a preset target base sequence in a target HARQ frame, a signal of a slot position corresponding to an effective cyclic shift value, the method further includes: and performing downsampling filtering on the target HARQ frame.

Accordingly, when the bandwidth of the target HARQ frame is much smaller than the system bandwidth of the receiving side, downsampling processing is required, which reduces the processing complexity and improves the processing efficiency. Illustratively, if the system bandwidth of the receiving side is 20M, the subcarrier spacing Δ f _ACK 1.25kHz, sequence length N of the target base sequence _ZC 839, the down-sampling filtered sampling rate can be designed to be 1.28M and the bandwidth to be 0.96M.

Exemplarily, fig. 9 and fig. 10 are schematic flowcharts of a target HARQ frame detection method according to an embodiment of the present invention. As shown in fig. 9, the receiving side system may receive and detect the target HARQ frame by using multiple antennas, including performing CP removal processing, FFT, conjugate multiplication with a local sequence frequency domain, and IFFT on the target HARQ frame received by each antenna, calculating power of the target HARQ frame, determining noise power according to signal power in a time slot position corresponding to the determined reserved effective cyclic shift value, performing noise preprocessing and combining on detection results corresponding to each antenna, including obtaining a difference power value obtained by subtracting the corresponding noise power from the power of each target HARQ frame, outputting a sum P of the difference power values in all antennas, and a sum TH of the noise powers, and determining the sum TH of the noise powers as a detection threshold. Alternatively, the sum P of the output difference power values may be represented by the following formula:

where r is the number of antennas, coefficient C _i Can be based on Noise power Noise in each antenna _i The calculation is made according to the following formula:

the sum of the output noise powers, i.e., the detection threshold TH, can be expressed by the following equation:

TH＝Coff _th ×min(Noise ₀ ,Noise ₁ ,…,Noise _r )

wherein, coff _th Is a detection threshold constant.

As shown in fig. 10, when detecting the target HARQ frame, the initial detection number ack _ detect _ num is 0, and the signal in the slot position corresponding to the effective cyclic shift value is detected based on the obtained power as a threshold. If the detection result exceeds the threshold, judging that the positive confirmation information is detected currently, wherein the positive confirmation information is ACK information, adding 1 to the detection number ACK _ detect _ num, and respectively recording the detected cyclic shift value V, the detected power P and the corresponding receiver node identification ID in a set V _suc 、P _suc And ID _suc Otherwise, the information is judged to be negative confirmation information and is NACK information.

Optionally, fig. 10 further includes performing false detection filtering when the detection number exceeds the maximum detection number. The maximum detection number may be the maximum HARQ response information supported by the same HARQ frame, and when the detection number exceeds the maximum detection number, it may be determined that the currently detected positive acknowledgement information includes negative acknowledgement information that is erroneously determined as positive acknowledgement information, or includes positive acknowledgement information fed back by at least two receivers, that is, a false detection occurs, where the false detection filtering may be an operation for excluding the false detection.

Correspondingly, the false detection filtering may determine whether the false detection occurs according to the receiver node identifier and the power difference value corresponding to the two pieces of positive acknowledgement information that are detected adjacently. Exemplarily, fig. 11 is a schematic flow chart of a virtual inspection filtering method according to an embodiment of the present invention. Specifically, the target HARQ frames fed back by different receivers can be distinguished according to the receiver node identifiers, and if the receiver node identifiers corresponding to two pieces of adjacently detected positive acknowledgement information are different, it is determined that the two pieces of positive acknowledgement information are fed back by different receivers, and a false detection occurs. Further, the power of the positive acknowledgement information fed back by the same receiver does not differ too much, otherwise, it can be determined that a false detection condition that the negative acknowledgement information is misjudged as the positive acknowledgement information exists, or the positive acknowledgement information fed back by different receivers is determined as the false detection condition fed back by the same receiver. Therefore, whether the power difference value of the two pieces of positive confirmation information exceeds a preset threshold value or not can be judged, if yes, the virtual detection is determined to occur, and the positive confirmation information with lower power can be screened out as a virtual detection result; if the false detection result does not exceed the preset threshold value, the false detection is determined not to occur, and if the false detection result does not occur, the currently detected positive confirmation result can be reported. The preset threshold may be a maximum power difference that may occur between the preset positive acknowledgement messages fed back by the same receiver.

The embodiment of the invention provides a hybrid automatic repeat request (HARQ) response method, which detects a target HARQ frame according to an effective cyclic shift value and a reserved cyclic shift value agreed in advance with a data frame receiver, can determine a detection threshold value at an optimal position to accurately obtain a feedback receiving result, reduces the influence of power difference between feedback signals sent by different nodes on detection performance, improves the detection accuracy of the HARQ feedback signals, and avoids increasing the channel estimation complexity of HARQ system nodes.

EXAMPLE five

Fig. 12 is a schematic structural diagram of a HARQ response apparatus according to a fifth embodiment of the present invention, and as shown in fig. 12, the apparatus includes: a response information generation module 510, a target HARQ frame generation module 520, and a target HARQ frame transmission module 530.

The response information generating module 510 is configured to generate at least one HARQ response information according to a reception result of a data frame sent by a sender, where each HARQ response information is used for performing synchronous feedback in the same HARQ frame.

A target HARQ frame generating module 520, configured to generate a target HARQ frame according to each HARQ response information, and at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence.

A target HARQ frame sending module 530, configured to send a target HARQ frame to the sender, so as to instruct the sender to detect, according to the signal of the timeslot position corresponding to the reserved cyclic shift value in the target HARQ frame, the signal of the timeslot position corresponding to the effective cyclic shift value.

In an optional implementation manner of the embodiment of the present invention, the apparatus may further include: the available cyclic shift value determining module is used for determining an available cyclic shift value according to the sequence length of a preset target base sequence and a preset cyclic shift step length; and the cyclic shift value selection module is used for determining at least one effective cyclic shift value in the available cyclic shift values according to the total single-transmission amount of the HARQ response information, and determining the available cyclic shift values except the effective cyclic shift value as reserved cyclic shift values.

In an optional implementation manner of the embodiment of the present invention, the target HARQ frame generation module 520 may be specifically configured to: performing cyclic shift processing on the target base sequence by using each effective cyclic shift value to obtain cyclic shift sequences corresponding to each effective cyclic shift value; performing frame format processing on the cyclic shift sequence to obtain a baseband HARQ frame; and modulating the baseband HARQ frame by using each HARQ response message to obtain the target HARQ frame.

In an optional implementation manner of the embodiment of the present invention, the target HARQ frame generating module 520 may specifically be configured to: obtaining a local baseband HARQ frame of a cyclic shift sequence corresponding to each prestored effective cyclic shift value; wherein, each local baseband HARQ frame is obtained by respectively carrying out frame format processing on each cyclic shift sequence; modulating the matched local baseband HARQ frame by using each HARQ response message to obtain a local modulation HARQ frame; and performing time domain superposition on the local modulation HARQ frame to obtain the target HARQ frame.

The device can execute the hybrid automatic repeat request HARQ response method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the hybrid automatic repeat request HARQ response method.

The embodiment of the invention provides a hybrid automatic repeat request (HARQ) response device, which generates HARQ response information according to a receiving result of a data frame, generates a target HARQ frame according to the HARQ response information, a predetermined target base sequence and an effective cyclic shift value predetermined by a data frame sender, and is used for feeding back the receiving result to the sender so as to enable the sender to detect the target HARQ frame according to a predetermined reserved cyclic shift value, can determine a detection threshold value at an optimal position to accurately obtain the fed-back receiving result, reduces the influence of power difference between feedback signals sent by different nodes on detection performance, improves the detection accuracy of the HARQ feedback signals, and avoids increasing the channel estimation complexity of HARQ system nodes.

EXAMPLE six

Fig. 13 is a schematic structural diagram of a HARQ response apparatus according to a sixth embodiment of the present invention, and as shown in fig. 13, the apparatus includes: a target HARQ frame receiving module 610, a cyclic shift value acquiring module 620 and a signal detecting module 630.

The target HARQ frame receiving module 610 is configured to continuously send at least one data frame to a receiver, and receive a target HARQ frame fed back by the receiver; the target HARQ frame comprises HARQ response information fed back to each data frame by a receiver.

A cyclic shift value obtaining module 620, configured to obtain at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to the target base sequence, where the valid cyclic shift value and the reserved cyclic shift value are agreed by the receiver.

A signal detecting module 630, configured to detect a signal of a slot position corresponding to an effective cyclic shift value by using a signal of a slot position corresponding to a reserved cyclic shift value of a preset target base sequence in a target HARQ frame.

In an optional implementation manner of the embodiment of the present invention, the signal detection module 630 may be specifically configured to: determining a detection threshold value corresponding to a target HARQ frame according to a signal of a time slot position corresponding to a reserved cyclic shift value of a preset target base sequence in the target HARQ frame; respectively acquiring detection power values of signals of time slot positions corresponding to the effective cyclic shift values, and respectively comparing the detection power values with the detection threshold values; for the signal of the first time slot position with the detection power value larger than the detection threshold value, determining the HARQ response information corresponding to the signal of the first time slot position as positive confirmation information; and for the signal at the second time slot position with the detection power value smaller than or equal to the detection threshold value, determining the HARQ response information corresponding to the signal at the second time slot position as negative acknowledgement information.

The embodiment of the invention provides a hybrid automatic repeat request (HARQ) response device, which detects a target HARQ frame according to an effective cyclic shift value and a reserved cyclic shift value agreed in advance with a data frame receiver, can determine a detection threshold value at an optimal position to accurately obtain a feedback receiving result, reduces the influence of power difference between feedback signals sent by different nodes on detection performance, improves the detection accuracy of the HARQ feedback signals, and avoids increasing the channel estimation complexity of HARQ system nodes.

EXAMPLE seven

Fig. 14 is a schematic structural diagram of a computer device according to a seventh embodiment of the present invention. FIG. 14 illustrates a block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention. The computer device 12 shown in FIG. 14 is only one example and should not be taken as limiting the scope of use and functionality of embodiments of the invention.

As shown in FIG. 14, computer device 12 is in the form of a general purpose computing device. The components of computer device 12 may include, but are not limited to: one or more processors 16, a memory 28, and a bus 18 that connects the various system components (including the memory 28 and the processors 16).

Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, industry Standard Architecture (ISA) bus, micro-channel architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Computer device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.

The memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. Computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 14, and commonly referred to as a "hard drive"). Although not shown in FIG. 14, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.

Computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with computer device 12, and/or with any devices (e.g., network card, modem, etc.) that enable computer device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Also, computer device 12 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with the other modules of computer device 12 via bus 18. It should be appreciated that although not shown in FIG. 14, other hardware and/or software modules may be used in conjunction with computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

The processor 16 executes various functional applications and data processing by running programs stored in the memory 28, so as to implement the HARQ response method according to the embodiment of the present invention: generating at least one HARQ response message according to the receiving result of the data frame sent by the sender, wherein each HARQ response message is used for synchronous feedback in the same HARQ frame; generating a target HARQ frame according to each HARQ response message, and at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence; the number of the effective cyclic shift value is consistent with that of the HARQ response information, the time slot position corresponding to the effective cyclic shift value in the target HARQ frame is filled with a modulation signal determined by the HARQ response information, the target base sequence and the effective cyclic shift value, and the time slot position corresponding to the reserved cyclic shift value is vacant; and sending the target HARQ frame to a sender to indicate the sender to detect the signal of the time slot position corresponding to the effective cyclic shift value according to the signal of the time slot position corresponding to the reserved cyclic shift value in the target HARQ frame.

Or, continuously sending at least one data frame to a receiver, and receiving a target HARQ frame fed back by the receiver; the target HARQ frame comprises HARQ response information fed back to each data frame by a receiver; acquiring at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to a target base sequence appointed by the receiver; and detecting the signal of the time slot position corresponding to the effective cyclic shift value by using the signal of the time slot position corresponding to the reserved cyclic shift value of the preset target base sequence in the target HARQ frame.

Example eight

An eighth embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a hybrid automatic repeat request HARQ response method provided in the embodiment of the present invention: generating at least one HARQ response message according to the receiving result of the data frame sent by the sender, wherein each HARQ response message is used for synchronous feedback in the same HARQ frame; generating a target HARQ frame according to each HARQ response message, and at least one effective cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence; the number of the effective cyclic shift value is consistent with that of the HARQ response information, the time slot position corresponding to the effective cyclic shift value in the target HARQ frame is filled with a modulation signal determined by the HARQ response information, the target base sequence and the effective cyclic shift value, and the time slot position corresponding to the reserved cyclic shift value is vacant; and sending the target HARQ frame to a sender to indicate the sender to detect the signal of the time slot position corresponding to the effective cyclic shift value according to the signal of the time slot position corresponding to the reserved cyclic shift value in the target HARQ frame.

Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or computer device. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A hybrid automatic repeat request (HARQ) response method is characterized by comprising the following steps:

the number of the effective cyclic shift values is the same as that of the HARQ response information, the slot position corresponding to the effective cyclic shift value in the target HARQ frame is filled with a modulation signal jointly determined by the HARQ response information, the target base sequence and the effective cyclic shift value, and the slot position corresponding to the reserved cyclic shift value is vacant; the effective cyclic shift value is a cyclic shift value adopted when the target base sequence generates an effective sequence through cyclic shift, and the effective sequence generates a baseband signal for bearing HARQ response information; the reserved cyclic shift value is a cyclic shift value adopted when the target base sequence generates a reserved sequence through cyclic shift, and the reserved sequence is not used for generating signals; the target HARQ frame is frame format data with a preset time domain format, and comprises time slot positions corresponding to each effective cyclic shift value and each reserved cyclic shift value respectively, and modulation signals in the time slot positions corresponding to each effective cyclic shift value bear HARQ response information; the target HARQ frame is used for being sent to a data frame sender so as to feed back at least one piece of HARQ response information carried by the HARQ frame;

2. The method of claim 1, before generating at least one HARQ response message according to a reception result of a data frame transmitted from a transmitting side, further comprising:

determining an available cyclic shift value according to the sequence length of a preset target base sequence and a preset cyclic shift step length;

and determining at least one valid cyclic shift value among the available cyclic shift values according to the total single transmission amount of the HARQ response information, and determining the available cyclic shift values except the valid cyclic shift values as reserved cyclic shift values.

3. The method of claim 1, wherein generating a target HARQ frame according to each HARQ response message and at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence comprises:

performing cyclic shift processing on the target base sequence by using each effective cyclic shift value to obtain cyclic shift sequences corresponding to each effective cyclic shift value;

carrying out frame format processing on the cyclic shift sequence to obtain a baseband HARQ frame;

and modulating the baseband HARQ frame by using each HARQ response message to obtain the target HARQ frame.

4. The method as claimed in claim 1, wherein generating the target HARQ frame according to each HARQ response information, and at least one valid cyclic shift value and at least one reserved cyclic shift value corresponding to a preset target base sequence comprises:

acquiring a local baseband HARQ frame of a cyclic shift sequence corresponding to each prestored effective cyclic shift value;

wherein, each local baseband HARQ frame is obtained by respectively carrying out frame format processing on each cyclic shift sequence;

modulating the matched local baseband HARQ frame by using each HARQ response message to obtain a local modulation HARQ frame;

and performing time domain superposition on the local modulation HARQ frame to obtain the target HARQ frame.

5. A hybrid automatic repeat request (HARQ) response method, comprising:

continuously sending at least one data frame to a receiver, and receiving a target HARQ frame fed back by the receiver; the target HARQ frame comprises HARQ response information fed back to each data frame by a receiver;

detecting a signal of a time slot position corresponding to an effective cyclic shift value by using a signal of a time slot position corresponding to a reserved cyclic shift value of a preset target base sequence in a target HARQ frame;

the number of the effective cyclic shift values is the same as that of the HARQ response information, the time slot position corresponding to the effective cyclic shift value in the target HARQ frame is filled with a modulation signal determined by the HARQ response information, the target base sequence and the effective cyclic shift value, and the time slot position corresponding to the reserved cyclic shift value is vacant; the effective cyclic shift value is a cyclic shift value adopted when the target base sequence generates an effective sequence through cyclic shift, and the effective sequence generates a baseband signal for bearing HARQ response information; the reserved cyclic shift value is a cyclic shift value adopted when the target base sequence generates a reserved sequence through cyclic shift, and the reserved sequence is not used for generating a signal; the target HARQ frame is frame format data with a preset time domain format, and comprises time slot positions corresponding to each effective cyclic shift value and each reserved cyclic shift value respectively, and modulation signals in the time slot positions corresponding to each effective cyclic shift value bear HARQ response information; the target HARQ frame is used for being sent to a data frame sender so as to feed back at least one piece of HARQ response information carried.

6. The method as claimed in claim 5, wherein detecting the signal of the slot position corresponding to the valid cyclic shift value using the signal of the slot position corresponding to the reserved cyclic shift value of the preset target base sequence in the target HARQ frame comprises:

determining a detection threshold value corresponding to a target HARQ frame according to a signal of a time slot position corresponding to a reserved cyclic shift value of a preset target base sequence in the target HARQ frame;

respectively acquiring detection power values of signals of time slot positions corresponding to the effective cyclic shift values, and respectively comparing the detection power values with the detection threshold values;

for the signal of the first time slot position with the detection power value larger than the detection threshold value, determining the HARQ response information corresponding to the signal of the first time slot position as positive confirmation information;

and for the signal at the second time slot position with the detection power value smaller than or equal to the detection threshold value, determining the HARQ response information corresponding to the signal at the second time slot position as negative acknowledgement information.

7. A hybrid automatic repeat request (HARQ) response apparatus, comprising:

a target HARQ frame generation module, configured to generate a target HARQ frame according to each HARQ response information, and at least one valid cyclic shift value and at least one reserved cyclic shift value that correspond to a preset target base sequence;

8. A hybrid automatic repeat request (HARQ) response apparatus, comprising:

the signal detection module is used for detecting the signal of the time slot position corresponding to the effective cyclic shift value by using the signal of the time slot position corresponding to the reserved cyclic shift value of the preset target base sequence in the target HARQ frame;

the number of the effective cyclic shift values is the same as that of the HARQ response information, the time slot position corresponding to the effective cyclic shift value in the target HARQ frame is filled with a modulation signal determined by the HARQ response information, the target base sequence and the effective cyclic shift value, and the time slot position corresponding to the reserved cyclic shift value is vacant; the effective cyclic shift value is a cyclic shift value adopted when the target base sequence generates an effective sequence through cyclic shift, and the effective sequence generates a baseband signal for bearing HARQ response information; the reserved cyclic shift value is a cyclic shift value adopted when the target base sequence generates a reserved sequence through cyclic shift, and the reserved sequence is not used for generating signals; the target HARQ frame is frame format data with a preset time domain format, and comprises time slot positions corresponding to each effective cyclic shift value and each reserved cyclic shift value respectively, and modulation signals in the time slot positions corresponding to each effective cyclic shift value bear HARQ response information; the target HARQ frame is used for being sent to a data frame sender so as to feed back at least one piece of HARQ response information carried.

9. A computer device, characterized in that the computer device comprises:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the hybrid automatic repeat request, HARQ, response method of any of claims 1-4 or 5-6.

10. A computer storage medium having a computer program stored thereon, which program, when being executed by a processor, is adapted to carry out the hybrid automatic repeat request, HARQ, response method according to any of the claims 1-4 or 5-6.