WO2016070790A1 - Harq acknowledgement information feedback method and device - Google Patents

Abstract

Disclosed are an HARQ acknowledgement information feedback method and device. According to embodiments of the present application, a network device determines HARQ acknowledgement information of an uplink data channel that needs to be fed back to a terminal; and the network device sends DCI to the terminal, the DCI carrying the HARQ acknowledgement information of the uplink data channel. In the embodiments of the present application, a new DCI format is defined, so that the DCI is enabled to carry the HARQ acknowledgement information, so as to feed back the HARQ acknowledgement information.

Description

Method and device for feeding back HARQ confirmation information

The present application claims priority to Chinese Patent Application No. 201410637897.9, entitled "Responsive Method and Apparatus for HARQ Confirmation Information", filed on November 06, 2014, the entire contents of which are hereby incorporated by reference. In this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and apparatus for feeding back Hybrid Automatic Repeat Request (HARQ) acknowledgement information.

Background technique

Downlink Control Information (DCI) is used to transmit scheduling information and uplink power control information of downlink and uplink data transmissions. DCI is divided into different formats (DCI Format) depending on the purpose and content of the information. A DCI can be carried by a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH).

The Long Term Evolution (LTE) system adopts the HARQ mechanism such as synchronous multi-process stop, and the retransmission must occur at a predefined time. The LTE system supports synchronous non-adaptive HARQ retransmission and synchronous adaptive HARQ retransmission. In the prior art, a Physical Hybrid ARQ Indicator Channel (PHICH) is used to carry HARQ response (ACK/NACK) information for an uplink shared channel (UL-SCH) data packet. Since the ACK/NACK information is represented by 1-bit signaling, the information length is very short, and the transmission performance of the ACK/NACK is ensured by means of repetition coding, low-order modulation (such as BPSK), orthogonal extension, scrambling, and time-frequency diversity mapping.

With the rise of the Internet of Things, support for Machine Type Communication (MTC) in LTE systems has received increasing attention. A physical layer enhancement project for MTC was established in 3GPP Release 13. In order to reduce the cost of the MTC UE (User's Equipment, user equipment, ie, the terminal), a new type of UE is defined, and both uplink and downlink support only 1.4 MHz radio frequency bandwidth.

Since the PHICH carrying the HARQ response information for the uplink shared channel data packet is transmitted at the full bandwidth, the UE supporting only the 1.4 MHz radio frequency bandwidth cannot receive the PHICH. Currently, there is no HARQ acknowledgement information for the MTC UE supporting only the 1.4 MHz radio frequency bandwidth. Feedback program.

Summary of the invention

The present application provides a feedback method and apparatus for hybrid automatic repeat request HARQ confirmation information, which is used to implement feedback of HARQ confirmation information.

The embodiment of the present application provides a feedback method for hybrid automatic repeat request HARQ confirmation information, including:

The network device determines HARQ acknowledgement information of the uplink data channel that needs to be fed back to the terminal;

The network device sends downlink control information DCI to the terminal, where the DCI carries HARQ acknowledgement information of the uplink data channel.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, the DCI carrying the HARQ acknowledgment information is scrambled using a radio network temporary identifier RNTI dedicated to the HARQ acknowledgment information feedback.

Preferably, the network device further includes a process of encoding the HARQ confirmation information carried in the DCI before the DCI is sent to the terminal, where the coding process includes:

Adding a cyclic redundancy check CRC code to the HARQ acknowledgement information, and scrambling the RNTI dedicated to the HARQ acknowledgement information feedback with the CRC code to obtain scrambled HARQ acknowledgement information;

Convolutional coding of the scrambled HARQ confirmation information;

Rate matching the convolutionally encoded HARQ acknowledgment information.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the bit has a corresponding relationship with the PRB allocated to the terminal, or the bit in the bit sequence has a corresponding relationship with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol; the subband refers to the system a set of physical resource blocks PRB within the bandwidth;

And when the network device sends the DCI, determining, according to the correspondence, a location of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band Quantity

When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the N bits:

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, and the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is DMRS cyclic shift possible The total number of values;

When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×D bits:

or,

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×M bits, where N is the number of PRBs in one subband;

When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×M bits:

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of DMRS cyclic shift;

When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×D×M bits:

or,

or,

or,

or,

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×D×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

Another method for feeding back the hybrid automatic repeat request HARQ confirmation information provided by the embodiment of the present application includes:

Receiving, by the terminal, downlink control information DCI sent by the network device;

The terminal acquires HARQ confirmation information of an uplink data channel carried in the DCI.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, in the process of acquiring the HARQ acknowledgment information of the uplink data channel carried in the DCI, the terminal uses the RNTI dedicated to the HARQ acknowledgment information feedback to descramble the HARQ acknowledgment information carried in the DCI.

Preferably, the terminal acquires HARQ confirmation information of the uplink data channel carried in the DCI, including:

Determining, by the terminal, the rate-matched HARQ acknowledgment information;

Decoding, by the terminal, the de-rate matched HARQ acknowledgement information;

The terminal descrambles the decoded HARQ acknowledgement information using an RNTI dedicated to the HARQ acknowledgment information feedback.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the bit has a corresponding relationship with the PRB allocated to the terminal, or the bit in the bit sequence has a corresponding relationship with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol; the subband refers to the system a set of physical resource blocks PRB within the bandwidth;

And when the terminal receives the DCI, determining, according to the correspondence, a position of a bit corresponding to the HARQ confirmation information of the terminal in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band Quantity

When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N bits:

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, and the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is DMRS cyclic shift possible The total number of values;

When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×D bits:

or,

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×M bits, where N is the number of PRBs in one subband;

When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×M bits:

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of DMRS cyclic shift;

When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×D×M bits:

or,

or,

or,

or,

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×D×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

A base station provided by an embodiment of the present application includes:

a processing module, configured to determine HARQ confirmation information of an uplink data channel that needs to be fed back to the terminal;

And a sending module, configured to send downlink control information DCI to the terminal, where the DCI carries HARQ acknowledgement information of the uplink data channel.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, the DCI carrying the HARQ acknowledgment information uses an RNTI dedicated to the HARQ acknowledgment information feedback. Perform scrambling.

Preferably, the processing module is further configured to: add a cyclic redundancy check CRC code to the HARQ acknowledgement information, and use an RNTI dedicated to the HARQ acknowledgement information feedback before transmitting the DCI to the terminal. The CRC code is scrambled to obtain the scrambled HARQ acknowledgment information; the scrambled HARQ acknowledgment information is convolutionally encoded; and the convolutionally encoded HARQ acknowledgment information is rate matched.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the bit has a corresponding relationship with the PRB allocated to the terminal, or the bit in the bit sequence has a corresponding relationship with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol; the subband refers to the system a physical resource block PRB set in the bandwidth; the processing module is specifically configured to: determine, according to the correspondence, a location of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band The processing module is specifically configured to: determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N bits:

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is the demodulation reference symbol. The total number of possible values of the cyclic shift DMRS cyclic shift; the processing module is specifically configured to: determine, according to the following formula, a position of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the N×D bits:

or,

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, one of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×M bits, and N is the number of PRBs in one subband; the processing module Specifically, the location of the bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×M bits is determined according to the following formula:

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of the DMRS cyclic shift; the processing module is specifically configured to: determine, according to the following formula, a position of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the N×D×M bits:

or,

or,

or,

or,

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×D×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

A terminal provided by an embodiment of the present application includes:

a receiving module, configured to receive downlink control information DCI sent by the network device;

The processing module is configured to obtain HARQ confirmation information of an uplink data channel carried in the DCI.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, in the process of acquiring the HARQ acknowledgment information of the uplink data channel carried in the DCI, the processing module uses the RNTI dedicated to the HARQ acknowledgment information feedback to descramble the HARQ acknowledgment information carried in the DCI. .

Preferably, the processing module is further configured to: perform de-rate matching on the received data to obtain a de-rate-matched HARQ acknowledgment information; decode the de-rate matched HARQ acknowledgment information; and use the HARQ-specific acknowledgment information; The RNTI confirming the information feedback descrambles the decoded HARQ acknowledgement information.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the bit has a corresponding relationship with the PRB allocated to the terminal, or the bit in the bit sequence has a corresponding relationship with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol; the subband refers to the system Within bandwidth a physical resource block PRB set; the processing module is specifically configured to: determine, according to the correspondence, a position of a bit corresponding to the HARQ confirmation information of the terminal in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band The processing module is specifically configured to: determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N bits:

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, and the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is DMRS cyclic shift possible The processing module is specifically configured to: determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×D bits:

or,

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, one of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×M bits, and N is the number of PRBs in one subband; the processing module Specifically, the location of the bit corresponding to the HARQ confirmation information of the terminal in the N×M bits is determined according to the following formula:

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of the DMRS cyclic shift; the processing module is specifically configured to: determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×D×M bits:

or,

or,

or,

or,

or,

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×D×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

In the embodiment of the present application, the network device determines the HARQ acknowledgment information of the uplink data channel that needs to be fed back to the terminal; the network device sends the DCI to the terminal, where the DCI carries the HARQ acknowledgment information of the uplink data channel. In the embodiment of the present application, a new DCI format is defined, and the HARQ confirmation information is carried in the DCI, thereby implementing feedback of the HARQ confirmation information.

DRAWINGS

1 is a schematic flowchart of a method for feeding back HARQ confirmation information according to Embodiment 1 of the present application;

2 is a schematic diagram of a coding process of HARQ confirmation information in an embodiment of the present application;

3 is a schematic flowchart of a method for feeding back HARQ confirmation information according to Embodiment 2 of the present application;

4 is a schematic diagram of resource allocation according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a base station according to Embodiment 3 of the present application;

FIG. 6 is a schematic diagram of a terminal according to Embodiment 4 of the present application;

FIG. 7 is a schematic diagram of a base station according to Embodiment 5 of the present application;

FIG. 8 is a schematic diagram of a terminal according to Embodiment 6 of the present application.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

FIG. 1 is a schematic flowchart of a method for feeding back HARQ confirmation information according to Embodiment 1 of the present application, which includes the following steps 101 to 102:

Step 101: The network device determines HARQ confirmation information of an uplink data channel that needs to be fed back to the terminal.

Step 102: The network device sends a DCI to the terminal, where the DCI carries the uplink data channel. HARQ confirmation information.

The DCI described in the foregoing process is the DCI newly defined in the embodiment of the present application, and the DCI is used to carry the feedback HARQ acknowledgement information (including HARQ ACK and/or HARQ NACK).

Optionally, one or more HARQ confirmation information may be carried in the DCI. If the DCI carries multiple HARQ acknowledgment information, the multiple HARQ acknowledgment information may belong to one terminal or multiple terminals.

Preferably, one of the DCIs may carry HARQ acknowledgment information of an uplink data channel in one or more subbands, where the subband refers to a physical resource block (PRB) set within a system bandwidth. The HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bits in the bit sequence have a correspondence relationship with the PRB allocated to the terminal, or the bits in the bit sequence are allocated to the terminal There is a correspondence between the PRB and the Demodulation Reference Signal (DMRS) cyclic shift. In step 102, when the network device sends the DCI, the location of the bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the bit sequence may be determined according to the correspondence.

The following takes the three scenarios as an example to describe the location of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the HARQ acknowledgment information bit sequence.

scene one:

A HARI acknowledgment information carrying an uplink data channel in a sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is the number of PRBs in one sub-band.

When the network device sends the DCI, determine, according to the following formula (1), a position of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the N bits:

………………………………Formula 1)

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Scene 2:

A HARI acknowledgment information carrying an uplink data channel in a sub-band, the HARQ acknowledgment information carried in the sub-band is N×D bits, N is the number of PRBs in one sub-band, and D is the total number of possible DMRS cyclic shift values. .

When the network device sends the DCI, determine, according to the following formula (2-1) or formula (2-2), a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×D bits. :

..............................Formula (2-1)

..............................Formula (2-2)

Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Scene 3:

One of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands carries the HARQ acknowledgment information as N×M bits, where N is the number of PRBs in one subband.

When the network device sends the DCI, determine, according to the following formula (3-1) or formula (3-2), a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×M bits. :

....................................Formula (3-1)

..............................Formula (3-2)

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.

Scene 4:

One of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×D×M bits, N is the number of PRBs in one subband, and D is DMRS cyclic shift possible The total number of values;

When the network device sends the DCI, according to the following formula (4-1) or formula (4-2) or formula (4-3) or formula (4-4) or formula (4-5) or formula (4) -6) determining the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N×D×M bits:

....................................Formula (4-1)

..............................Formula (4-2)

....................................Formula (4-3)

..............................Formula (4-4)

....................................Formula (4-5)

..............................Formula (4-6)

Where i is the position index of the HARQ acknowledgment information of the terminal in the N×D×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.

Considering that one DCI can carry HARQ acknowledgment information belonging to multiple terminals, in order to ensure that the multiple terminals can receive their own HARQ acknowledgment information, the HARQ acknowledgment information carried in the DCI can use feedback specific to the HARQ acknowledgment information. The Radio Network Temporary Identifier (RNTI) is scrambled. The RNTI may be pre-configured by the network side or pre-agreed so that the multiple terminals can use the RNTI to descramble the received DCI or HARQ acknowledgement information.

Before the network device sends the DCI to the terminal, the method further includes the process of encoding the HARQ confirmation information carried in the DCI. In the embodiment of the present application, the process of encoding may include:

Adding a Cyclical Redundancy Check (CRC) code to the HARQ confirmation information, and The RNTI dedicated to the HARQ acknowledgment information feedback is scrambled with the CRC code to obtain the scrambled HARQ acknowledgment information; then, the scrambled HARQ acknowledgment information is convolutionally encoded; after convolutional coding The HARQ acknowledges the information for rate matching.

FIG. 2 shows an encoding process for HARQ acknowledgment information carried in the DCI. A DCI carries multiple HARQ acknowledgment information, and each HARQ acknowledgment information is represented by 1 bit, and can be expressed, for example, as a bit sequence a ₀ , a ₁ , . . . , a _A-1 , where A is the number of HARQ acknowledgment information. Adding a CRC code by concatenating the A HARQ acknowledgment information, and scrambling the RNTI dedicated to the HARQ acknowledgment information feedback to obtain a scrambled HARQ acknowledgment information bit sequence c ₀ , c ₁ , ..., c _K-1 , where K is the length of the bit sequence obtained after adding the CRC code; convolutionally encoding c ₀ , c ₁ , ..., c _K-1 to obtain a convolutionally encoded HARQ acknowledgment information bit sequence d ₀ ⁽ⁱ⁾ , d ₁ ⁽ⁱ⁾ , ..., d _D-1 ⁽ⁱ⁾ , where D is the length of the bit sequence obtained after convolutional coding; then for d ₀ ⁽ⁱ⁾ , d ₁ ⁽ⁱ⁾ , ..., d _D-1 ⁽ⁱ⁾ Rate matching is performed to obtain bit sequences e ₀ , e ₁ , ..., e _E-1 , where E is the length of the bit sequence obtained after rate matching.

If one of the DCIs feeds back multiple HARQ acknowledgment information of one terminal, after adding the CRC, the RNTI dedicated to the terminal and the CRC may be used for scrambling.

Preferably, the DCI is transmitted in a common search space. For example, the DCI may be transmitted through a physical downlink control channel, and the physical downlink control channel may be transmitted in a data area, and the physical downlink control channel may support a common search space.

The DCI in the embodiment of the present application can be transmitted through a physical downlink channel.

In an application scenario, since the uplink and downlink of the low-cost MTC UE in the LTE system only support the 1.4 MHz radio frequency bandwidth, when the UE accesses the system with the system bandwidth greater than 1.4 MHz, the original PDCCH and PHICH channels continue to The control region sends, the MTC UE cannot receive the PDCCH and the PHICH, where the PHICH is used to carry the HARQ acknowledgement information, and the PDCCH is used to carry the DCI. Therefore, the physical downlink control channel needs to be sent in the data area to carry information carried by the PDCCH and the PHICH of the control region, and the physical downlink control channel may be referred to as an M-PDCCH. The M-PDCCH and the EPDCCH and the Physical Downlink Shared Channel (PDSCH) multiplex the data region by frequency division. In this case, the DCI for carrying the HARQ acknowledgment information in the embodiment of the present application may be sent by using the M-PDCCH.

In the embodiment of the present application, the network device determines the HARQ acknowledgment information of the uplink data channel that needs to be fed back to the terminal; the network device sends the DCI to the terminal, where the DCI carries the HARQ acknowledgment information of the uplink data channel. In the embodiment of the present application, a new DCI format is defined, and the HARQ confirmation information is carried in the DCI, thereby implementing feedback of the HARQ confirmation information.

FIG. 3 is a schematic flowchart of a method for feeding back HARQ confirmation information according to Embodiment 2 of the present application, including:

Step 301: The terminal receives downlink control information DCI sent by the network device.

Step 302: The terminal acquires HARQ confirmation information of an uplink data channel carried in the DCI.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, the terminal performs de-rate matching on the received data to obtain a HARQ confirmation after de-rate matching. Information; decoding the rate-matched HARQ acknowledgment information; descrambling the decoded HARQ acknowledgment information.

Preferably, one of the DCIs may carry HARQ acknowledgment information of an uplink data channel within one or more subbands, where the subband refers to a set of physical resource blocks PRB within a system bandwidth. The HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bits in the bit sequence have a correspondence relationship with the PRB allocated to the terminal, or the bits in the bit sequence are allocated to the terminal The PRB and the demodulation reference symbol cyclic shift DMRS cyclic shift have a corresponding relationship;

When the terminal receives the DCI, the terminal may determine a position of the bit corresponding to the HARQ confirmation information of the terminal in the bit sequence according to the correspondence.

The following describes the location of the bit corresponding to the HARQ acknowledgment information of the terminal in the HARQ acknowledgment information bit sequence.

scene one:

A DCI acknowledgment information carrying an uplink data channel in a sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is the number of PRBs in one sub-band.

When the terminal receives the DCI, the terminal determines the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the above formula (1).

For example, N=6, that is, one MTC subband contains 6 PRBs, and 6 PRBs in one MTC subband are numbered 0, 1, ..., 5 in the frequency domain from low to high; DCC0 carries MTC The HARQ acknowledgment information of the uplink data channel in the subband 0, and the HARQ acknowledgment information of the uplink data channel in the MTC subband 1 is carried in the DCI1; as shown in FIG. 4, the terminal UE1 is assigned the PRB#1 in the MTC subband 0. UE2 is assigned PRB#4 in MTC subband 1, and UE2 hops within the subframe.

According to formula (1), when UE1 receives the DCI0, it determines that the bit corresponding to the HARQ acknowledgment information is a1 of DCI0 according to the assigned PRB# ₁ ; when UE2 receives the DCI1, it determines according to the assigned PRB#4. The bit corresponding to the HARQ acknowledgment information is a ₄ of DCI1.

Scene 2:

A HARI acknowledgment information carrying an uplink data channel in a sub-band, the HARQ acknowledgment information carried in the sub-band is N×D bits, N is the number of PRBs in one sub-band, and D is the total number of possible DMRS cyclic shift values. ;

When the terminal receives the DCI, determine, according to the above formula (2-1) or formula (2-2), the position of the bit corresponding to the HARQ confirmation information of the terminal in the N×D bits.

For example, N=6, that is, one PRB contains 6 PRBs, and 6 PRBs in one subband are numbered 0, 1, ..., 5 in the frequency domain from low to high; DCI0 carries subband 0. HARQ acknowledgment information of the uplink data channel in the DCI1, the HARQ acknowledgment information of the uplink data channel in the subband 1 is carried in the DCI1; the UE1 is assigned the PRB#1 in the subband 0, and the UE2 is assigned the PRB# in the subband 1. 4; and the possible values of DMRS cyclic shift are 0, 1, 2, 3. The DMRS cyclic shift indicated in the DCI scheduling information allocated by UE1 is 2, then n _DMRS = 2; the resource of UE2 is pre-allocated, and if there is no corresponding scheduling DCI, then n _DMRS =0.

(2-1), UE1 receives the DCI0 time, and n _DMRS 1 according to the assigned PRB # = 2 HARQ acknowledgment information corresponding to the determined bits a ₆ DCI0 according to the formula; upon receiving the DCI1 UE2, according to the The assigned PRB #4 and n _DMRS =0 determine that the bit corresponding to the HARQ acknowledgment information is a ₁₆ of DCI1.

According to the formula (2-2), when receiving the DCI0, the UE1 determines that the bit corresponding to the HARQ acknowledgment information is a _{13 of} the DCI0 according to the PRB#1 and n _DMRS =2 to which the UE1 is allocated; when the UE2 receives the DCI1, The bit corresponding to the HARQ confirmation information is determined to be a ₄ of the DCI 1 according to the PRB #4 and n _DMRS =0 assigned thereto.

Scene 3:

One of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×M bits, and N is the number of PRBs in one subband;

When the terminal receives the DCI, determine, according to the above formula (3-1) or formula (3-2), the position of the bit corresponding to the HARQ confirmation information of the terminal in the N×M bits.

For example, N=6, that is, one PRB contains 6 PRBs, and 6 PRBs in one subband are numbered 0, 1, ..., 5 in the frequency domain from low to high; a sub-band carries a sub-band 0 and HARQ acknowledgment information of the uplink data channel in subband 1; UE1 is assigned PRB#1 in subband 0, and UE2 is assigned PRB#4 in subband 1

According to the formula (3-1), when receiving the DCI UE1,. 1 determines HARQ acknowledgment information bits corresponding to a ₁ in the DCI according to their assigned subbands 0 PRB #; upon receiving the DCI UE2, according to The PRB #4 in the subband 1 to which it is allocated determines that the bit corresponding to the HARQ acknowledgment information is a ₁₀ in the DCI.

According to the formula (3-2), when receiving the DCI UE1,. 1 determines HARQ acknowledgment information corresponding to the bits in the DCI according to a ₂ assigned to subbands 0 PRB #; upon receiving the DCI UE2, according to The PRB #4 in the subband 1 to which it is assigned determines that the bit corresponding to the HARQ acknowledgment information is a ₉ in the DCI.

Scene 4:

One of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×D×M bits, N is the number of PRBs in one subband, and D is DMRS cyclic shift possible The total number of values;

When the network device sends the DCI, according to the above formula (4-1) or formula (4-2) or formula (4-3) or formula (4-4) or formula (4-5) or formula (4) -6) determining the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N x D x M bits.

For example, N=6, that is, one PRB contains 6 PRBs, and 6 PRBs in one subband are numbered 0, 1, ..., 5 in the frequency domain from low to high; a sub-band carries a sub-band 0 and HARQ acknowledgment information of the uplink data channel in subband 1; UE1 is assigned PRB#1 in subband 0, and UE2 is assigned PRB#4 in subband 1. And the possible values of DMRS cyclic shift are 0, 1, 2, 3. The DMRS cyclic shift indicated in the DCI scheduling information allocated by UE1 is 2, then n _DMRS = 2; the resource of UE2 is pre-allocated, and if there is no corresponding scheduling DCI, then n _DMRS =0.

According to the formula (4-1), when the UE1 receives the DCI, based on their assigned subbands 0 to 1 and n _DMRS PRB # = 2 HARQ acknowledgment information corresponding to the determined bits in the DCI a _6; UE2 receives In the case of DCI, the bit corresponding to the HARQ acknowledgment information is determined to be a ₄₀ in the DCI according to the PRB #4 in the subband 1 to which it is allocated.

Other methods for determining the bits corresponding to the HARQ acknowledgment information will not be described again.

In the embodiment of the present application, the decoding process of the terminal corresponds to the coding process on the network side, and details are not described herein again.

Preferably, the DCI is transmitted in a common search space. For example, the DCI may be transmitted through a physical downlink control channel, and the physical downlink control channel may be transmitted in a data area, and the physical downlink control channel may support a common search space.

The embodiment of the present application receives the downlink control information DCI sent by the network device by using the terminal, and acquires the HARQ acknowledgement information of the uplink data channel carried in the DCI. In the embodiment of the present application, a new DCI format is defined, and the HARQ confirmation information is carried in the DCI, thereby implementing feedback of the HARQ confirmation information.

For the foregoing method flow, the embodiment of the present application further provides a base station and a terminal. The specific content of the base station and the terminal may be implemented by referring to the foregoing method, and details are not described herein again.

FIG. 5 is a schematic diagram of a base station according to Embodiment 3 of the present application, where the base station includes:

The processing module 501 is configured to determine HARQ confirmation information of an uplink data channel that needs to be fed back to the terminal;

The sending module 502 is configured to send downlink control information DCI to the terminal, where the DCI carries HARQ acknowledgement information of the uplink data channel.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, the DCI carrying the HARQ acknowledgment information is scrambled using an RNTI dedicated to the HARQ acknowledgment information feedback.

Preferably, the processing module 501 is further configured to: add a cyclic redundancy check CRC code to the HARQ acknowledgement information, and use an RNTI dedicated to the HARQ acknowledgement information feedback before transmitting the DCI to the terminal. The CRC code is scrambled to obtain the scrambled HARQ acknowledgment information; the scrambled HARQ acknowledgment information is convolutionally encoded; and the convolutionally encoded HARQ acknowledgment information is rate matched.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the bit has a corresponding relationship with the PRB allocated to the terminal, or the bit in the bit sequence has a corresponding relationship with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol; the subband refers to the system a physical resource block PRB set in the bandwidth; the processing module 501 is specifically configured to: determine, according to the correspondence, a position of a bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band The processing module 501 is specifically configured to: determine, according to formula (1) above, HARQ that needs to be fed back to the terminal. The position of the bit corresponding to the information is confirmed in the N bits.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is the demodulation reference symbol. The total number of possible values of the cyclic shift DMRS cyclic shift; the processing module 501 is specifically configured to: determine, according to the above formula (2-1) or formula (2-2), a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal. The position in the N x D bits.

Preferably, one of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×M bits, and N is the number of PRBs in one subband; the processing module The 501 is specifically configured to: determine, according to the foregoing formula (3-1) or the formula (3-2), a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×M bits.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of the DMRS cyclic shift; the processing module 501 is specifically configured to: according to the above formula (4-1) or formula (4-2) or formula (4-3) or formula (4-4) or formula ( 4-5) or Equation (4-6) determines the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N x D x M bits.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

FIG. 6 is a schematic diagram of a terminal according to Embodiment 4 of the present application, where the terminal includes:

The receiving module 601 is configured to receive downlink control information DCI sent by the network device;

The processing module 602 is configured to obtain HARQ acknowledgement information of the uplink data channel carried in the DCI.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, the processing module 602, in the process of acquiring the HARQ acknowledgment information of the uplink data channel carried in the DCI, uses the RNTI dedicated to the HARQ acknowledgment information feedback to perform the HARQ acknowledgment information carried in the DCI. De-scrambling.

Preferably, the processing module 602 is further configured to perform de-rate matching on the received data to obtain the de-rate matched HARQ acknowledgment information, and decode the de-rate matched HARQ acknowledgment information; The RNTI of the HARQ acknowledgment information feedback descrambles the decoded HARQ acknowledgment information.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the bit has a corresponding relationship with the PRB allocated to the terminal, or the bit in the bit sequence has a corresponding relationship with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol; the subband refers to the system a physical resource block PRB set in the bandwidth; the processing module 602 is specifically configured to: determine the terminal according to the correspondence The HARQ acknowledgment information corresponds to the position of the bit in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band The processing module 602 is specifically configured to: determine, according to the foregoing formula (1), a position of a bit corresponding to the HARQ confirmation information of the terminal in the N bits.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, and the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is DMRS cyclic shift possible The processing module 602 is specifically configured to: determine, according to the foregoing formula (2-1) or formula (2-2), a bit corresponding to the HARQ confirmation information of the terminal in the N×D bits. position.

Preferably, one of the DCIs carrying the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×M bits, and N is the number of PRBs in one subband; the processing module The 602 is specifically configured to: determine, according to the foregoing formula (3-1) or the formula (3-2), a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×M bits.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of the DMRS cyclic shift; the processing module 602 is specifically configured to: according to the above formula (4-1) or formula (4-2) or formula (4-3) or formula (4-4) or formula ( 4-5) or Equation (4-6) determines the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N x D x M bits.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

FIG. 7 is a schematic diagram of a base station according to Embodiment 5 of the present application, where the base station includes:

The processor 701 is configured to read a program in the memory 703, and perform the following process: determining HARQ confirmation information of an uplink data channel that needs to be fed back to the terminal; and transmitting, by the transceiver 702, downlink control information DCI to the terminal, where the DCI is Carrying HARQ confirmation information of the uplink data channel;

The transceiver 702 is configured to receive and transmit data under the control of the processor 701.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, the DCI carrying the HARQ acknowledgment information is scrambled using an RNTI dedicated to the HARQ acknowledgment information feedback.

Preferably, the processor 701 is further configured to: add a cyclic redundancy check CRC code to the HARQ acknowledgement information, and use an RNTI dedicated to the HARQ acknowledgement information feedback before transmitting the DCI to the terminal. The CRC code is scrambled to obtain the scrambled HARQ acknowledgment information; the scrambled HARQ acknowledgment information is convolutionally encoded; and the convolutionally encoded HARQ acknowledgment information is rate matched.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the network has a corresponding relationship with the PRB allocated to the terminal; the sub-band refers to a continuous physical resource block PRB subset within the system bandwidth; the processor 701 is specifically configured to: according to the terminal allocated The PRB determines the location of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band The processor 701 is specifically configured to: determine, according to the above formula (1), a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N bits.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is the demodulation reference symbol. The total number of possible values of the cyclic shift DMRS cyclic shift; the processor 701 is specifically configured to: determine, according to the above formula (2-1) or formula (2-2), a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal. The position in the N x D bits.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×M bits, and N is the number of PRBs in one subband; the processor The 701 is specifically configured to: determine, according to the foregoing formula (3-1) or the formula (3-2), a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N bits.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of the DMRS cyclic shift; the processor 701 is specifically configured to: according to the above formula (4-1) or formula (4-2) or formula (4-3) or formula (4-4) or formula ( 4-5) or Equation (4-6) determines the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N x D x M bits.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

Here, in FIG. 7, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 701 and various circuits of memory represented by memory 703. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 702 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.

The processor 701 is responsible for managing the bus architecture and the usual processing, and the memory 703 can store the processor 701 for execution. The data used during the operation.

FIG. 8 is a schematic diagram of a terminal according to Embodiment 6 of the present application, where the terminal includes:

The processor 801 is configured to read the program in the memory 803, and execute the following process: receiving the downlink control information DCI sent by the network device by using the transceiver 802, and acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI;

The transceiver 802 is configured to receive and transmit data under the control of the processor 801.

Preferably, the DCI carries one or more HARQ confirmation information.

Preferably, the processor 801, in the process of acquiring the HARQ acknowledgment information of the uplink data channel carried in the DCI, uses the RNTI dedicated to the HARQ acknowledgment information feedback to perform the HARQ acknowledgment information carried in the DCI. De-scrambling.

Preferably, the processor 801 is further configured to perform de-rate matching on the received data to obtain a de-rate matched HARQ acknowledgment information, and decode the de-rate matched HARQ acknowledgment information; The RNTI of the HARQ acknowledgment information feedback descrambles the decoded HARQ acknowledgment information.

Preferably, one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and the HARQ acknowledgment information of the uplink data channel in the one or more subbands is a bit sequence, the bit sequence The bit in the network has a corresponding relationship with the PRB allocated to the terminal; the sub-band refers to a continuous physical resource block PRB subset within the system bandwidth; the processor 801 is specifically configured to: according to the terminal allocated The PRB determines the location of the bit corresponding to the HARQ acknowledgment information of the terminal in the bit sequence.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, the HARQ acknowledgment information carried is N bits, one bit corresponds to HARQ acknowledgment information of one PRB, and N is PRB in one sub-band The processor 801 is specifically configured to: determine, according to the above formula (1), a position of a bit corresponding to the HARQ confirmation information of the terminal in the N bits.

Preferably, one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, and the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one sub-band, and D is DMRS cyclic shift possible The processor 801 is specifically configured to: determine, according to the above formula (2-1) or formula (2-2), a bit corresponding to the HARQ confirmation information of the terminal in the N×D bits. position.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, the HARQ acknowledgment information carried is N×M bits, and N is the number of PRBs in one subband; the processor The 801 is specifically configured to: determine, according to the foregoing formula (3-1) or the formula (3-2), a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×M bits.

Preferably, one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, where N is the number of PRBs in one subband, and D is The total number of possible values of the DMRS cyclic shift; the processor 801 is specifically configured to: according to the above formula (4-1) or formula (4-2) or formula (4-3) or formula (4-4) or formula ( 4-5) or formula (4-6) determines the HARQ that needs to be fed back to the terminal The position of the bit corresponding to the acknowledgment information in the N × D × M bits.

Preferably, the DCI is transmitted in a common search space.

Preferably, the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

Here, in FIG. 8, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 801 and various circuits of memory represented by memory 803. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 802 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 804 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 can store data used by the processor 801 in performing operations.

It can be seen from the above that the embodiment of the present application determines the HARQ acknowledgment information of the uplink data channel that needs to be fed back to the terminal by using the network device; the network device sends the DCI to the terminal, where the DCI carries the HARQ acknowledgement of the uplink data channel. information. In the embodiment of the present application, a new DCI format is defined, and the HARQ confirmation information is carried in the DCI, thereby implementing feedback of the HARQ confirmation information.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, or a computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims (44)

1. A feedback method for hybrid automatic repeat request HARQ confirmation information, comprising:

   The network device determines HARQ acknowledgement information of the uplink data channel that needs to be fed back to the terminal;

   The network device sends downlink control information DCI to the terminal, where the DCI carries HARQ acknowledgement information of the uplink data channel.
2. The method of claim 1 wherein the DCI carries one or more HARQ acknowledgment information.
3. The method of claim 1, wherein the DCI carrying the HARQ acknowledgment information is scrambled using a radio network temporary identity RNTI dedicated to the HARQ acknowledgment information feedback.
4. The method of claim 1, wherein the network device further includes a process of encoding the HARQ confirmation information carried in the DCI before the DCI is sent to the terminal, where the encoding process includes:

   Adding a cyclic redundancy check CRC code to the HARQ acknowledgement information, and scrambling the RNTI dedicated to the HARQ acknowledgement information feedback with the CRC code to obtain scrambled HARQ acknowledgement information;

   Convolutional coding of the scrambled HARQ confirmation information;

   Rate matching the convolutionally encoded HARQ acknowledgment information.
5. The method according to claim 1, wherein one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and HARQ acknowledgment information of an uplink data channel in the one or more subbands For a bit sequence, the bits in the bit sequence have a correspondence with the PRB allocated to the terminal, or the bits in the bit sequence have a correspondence with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol. The subband refers to a set of physical resource blocks PRB within the system bandwidth;

   And when the network device sends the DCI, determining, according to the correspondence, a location of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the bit sequence.
6. The method according to claim 5, wherein a DCI acknowledgment information of an uplink data channel in a sub-band is carried in a DCI, and the HARQ acknowledgment information carried is N bits, and one bit corresponds to HARQ acknowledgment information of one PRB. , N is the number of PRBs in a subband;

   When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the N bits:

   

   Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

   

   The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
7. The method according to claim 5, wherein a DCI acknowledgment information of an uplink data channel in a subband is carried in a DCI, and the HARQ acknowledgment information carried is N×D bits, and N is in a subband. The number of PRBs, D is the total number of possible values of DMRS cyclic shift;

   When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×D bits:

   

   or,

   

   Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

   

   The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
8. The method according to claim 5, wherein one of the DCIs carries HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×M bits, and N is a subband. The number of PRBs in the;

   When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×M bits:

   

   or,

   

   Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

   

   The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
9. The method according to claim 5, wherein one of the DCIs carries HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, and N is one. The number of PRBs in the subband, and D is the total number of possible values of the DMRS cyclic shift;

   When the network device sends the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information that needs to be fed back to the terminal in the N×D×M bits:

   

   or,

   

   or,

   

   or,

   

   or,

   

   or,

   

   Where i is the position index of the HARQ acknowledgment information of the terminal in the N×D×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

   

   The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
10. The method according to any one of claims 1 to 9, wherein the DCI is in a public search space transmission.
11. The method according to claim 10, wherein the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
12. A feedback method for hybrid automatic repeat request HARQ confirmation information, comprising:

    Receiving, by the terminal, downlink control information DCI sent by the network device;

    The terminal acquires HARQ confirmation information of an uplink data channel carried in the DCI.
13. The method of claim 12 wherein said DCI carries one or more HARQ acknowledgment information.
14. The method according to claim 12, wherein in the process of acquiring the HARQ acknowledgment information of the uplink data channel carried in the DCI, the RNTI dedicated to the HARQ acknowledgment information feedback is used in the DCI. The HARQ confirmation information carried is descrambled.
15. The method according to claim 12, wherein the acquiring, by the terminal, the HARQ confirmation information of the uplink data channel carried in the DCI comprises:

    Determining, by the terminal, the rate-matched HARQ acknowledgment information;

    Decoding, by the terminal, the de-rate matched HARQ acknowledgement information;

    The terminal descrambles the decoded HARQ acknowledgement information using an RNTI dedicated to the HARQ acknowledgment information feedback.
16. The method according to claim 12, wherein one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and HARQ acknowledgment information of an uplink data channel in the one or more subbands For a bit sequence, the bits in the bit sequence have a correspondence with the PRB allocated to the terminal, or the bits in the bit sequence have a correspondence with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol. The subband refers to a set of physical resource blocks PRB within the system bandwidth;

    And when the terminal receives the DCI, determining, according to the correspondence, a position of a bit corresponding to the HARQ confirmation information of the terminal in the bit sequence.
17. The method according to claim 16, wherein a DCI acknowledgment information of an uplink data channel in a subband is carried in a DCI, and the HARQ acknowledgment information carried is N bits, and one bit corresponds to HARQ acknowledgment information of one PRB. , N is the number of PRBs in a subband;

    When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N bits:

    

    Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
18. The method of claim 16 wherein a DCI carries uplink data within a subband The HARQ acknowledgment information of the channel, the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;

    When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×D bits:

    

    or,

    

    Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
19. The method according to claim 16, wherein one of the DCIs carries HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×M bits, and N is a subband. The number of PRBs in the;

    When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×M bits:

    

    or,

    

    Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
20. The method according to claim 16, wherein one of the DCIs carries HARQ acknowledgment information of an uplink data channel in M subbands, and the HARQ acknowledgment information carried is N×D×M bits, and N is one. The number of PRBs in the subband, and D is the total number of possible values of the DMRS cyclic shift;

    When the terminal receives the DCI, determine, according to the following formula, a position of a bit corresponding to the HARQ confirmation information of the terminal in the N×D×M bits:

    

    or,

    

    or,

    

    or,

    

    or,

    

    or,

    

    Where i is the position index of the HARQ acknowledgment information of the terminal in the N×D×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
21. The method according to any one of claims 12 to 20, wherein the DCI is in a common search space Internal transfer.
22. The method according to claim 21, wherein the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
23. A base station, comprising:

    a processing module, configured to determine HARQ confirmation information of an uplink data channel that needs to be fed back to the terminal;

    And a sending module, configured to send downlink control information DCI to the terminal, where the DCI carries HARQ acknowledgement information of the uplink data channel.
24. The base station according to claim 23, wherein the DCI carries one or more HARQ acknowledgement information.
25. The base station according to claim 23, wherein the DCI carrying the HARQ acknowledgment information is scrambled using an RNTI dedicated to the HARQ acknowledgment information feedback.
26. The base station according to claim 23, wherein the processing module is further configured to:

    Before transmitting the DCI to the terminal, adding a cyclic redundancy check CRC code to the HARQ acknowledgement information, and scrambling the RNTI dedicated to the HARQ acknowledgement information feedback with the CRC code to obtain scrambled HARQ confirmation information;

    Convolutional coding of the scrambled HARQ confirmation information;

    Rate matching the convolutionally encoded HARQ acknowledgment information.
27. The base station according to claim 23, wherein one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and HARQ acknowledgment information of an uplink data channel in the one or more subbands For a bit sequence, the bits in the bit sequence have a correspondence with the PRB allocated to the terminal, or the bits in the bit sequence have a correspondence with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol. The subband refers to a set of physical resource blocks PRB within the system bandwidth;

    The processing module is specifically configured to:

    Determining, according to the correspondence, a position of a bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the bit sequence.
28. The base station according to claim 27, wherein one DCI carries HARQ acknowledgment information of an uplink data channel in one sub-band, and the HARQ acknowledgment information carried by the DCI is N bits, and one bit corresponds to HARQ acknowledgment information of one PRB. , N is the number of PRBs in a subband; the processing module is specifically used to:

    Determining the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N bits according to the following formula:

    

    Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
29. The base station according to claim 27, wherein one DCI carries HARQ acknowledgment information of an uplink data channel in one sub-band, and the HARQ acknowledgment information carried is N×D bits, and N is in a sub-band. The number of PRBs, D is the total number of possible values of the demodulation reference symbol cyclic shift DMRS cyclic shift; the processing module is specifically used to:

    Determining the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N×D bits according to the following formula:

    

    or,

    

    Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
30. The base station according to claim 27, wherein one of the DCIs carries HARQ acknowledgment information of an uplink data channel in M subbands, and the HARQ acknowledgment information carried is N×M bits, and N is a subband. The number of PRBs in the process; the processing module is specifically used to:

    Determining the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N×M bits according to the following formula:

    

    or,

    

    Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
31. The base station according to claim 27, wherein one of the DCIs carries HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, and N is one. The number of PRBs in the subband, D is the total number of possible values of the DMRS cyclic shift; the processing module is specifically used to:

    Determining the position of the bit corresponding to the HARQ acknowledgment information that needs to be fed back to the terminal in the N×D×M bits according to the following formula:

    

    or,

    

    or,

    

    or,

    

    or,

    

    or,

    

    Where i is the position index of the HARQ acknowledgment information of the terminal in the N bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1.

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
32. The base station according to any one of claims 23 to 31, wherein the DCI is transmitted in a common search space.
33. The base station according to claim 32, wherein the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
34. A terminal, comprising:

    a receiving module, configured to receive downlink control information DCI sent by the network device;

    The processing module is configured to obtain HARQ confirmation information of an uplink data channel carried in the DCI.
35. The terminal according to claim 34, wherein the DCI carries one or more HARQ acknowledgement information.
36. The terminal according to claim 34, wherein in the process of acquiring the HARQ acknowledgment information of the uplink data channel carried in the DCI, the processing module uses the RNTI dedicated to the HARQ acknowledgment information feedback to the DCI. The HARQ confirmation information carried in is descrambled.
37. The terminal according to claim 34, wherein the processing module is further configured to:

    De-rate matching the received data to obtain the rate-matched HARQ acknowledgment information; decoding the de-rate matched HARQ acknowledgment information; using the RNTI dedicated to the HARQ acknowledgment information feedback to decode the HARQ acknowledgment information Perform descrambling.
38. The terminal according to claim 34, wherein one of the DCIs carries HARQ acknowledgment information of an uplink data channel in one or more subbands, and HARQ acknowledgment information of an uplink data channel in the one or more subbands For a bit sequence, the bits in the bit sequence have a correspondence with the PRB allocated to the terminal, or the bits in the bit sequence have a correspondence with the PRB allocated to the terminal and the cyclically shifted DMRS cyclic shift of the demodulation reference symbol. The subband refers to a set of physical resource blocks PRB within the system bandwidth;

    The processing module is specifically configured to: determine, according to the correspondence, a position of a bit corresponding to the HARQ confirmation information of the terminal in the bit sequence.
39. The terminal according to claim 38, wherein one DCI carries the HARQ acknowledgment information of the uplink data channel in one sub-band, and the HARQ acknowledgment information carried by the DCI is N bits, and one bit corresponds to one HARB acknowledgment information of the PRB. , N is the number of PRBs in a subband; the processing module is specifically used to:

    Determining, by the following formula, a position of a bit corresponding to the HARQ acknowledgment information of the terminal in the N bits:

    

    Where i represents the location index of the HARQ acknowledgment information of the terminal in the N bits.

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
40. The terminal according to claim 38, wherein one DCI carries uplink data in one sub-band The HARQ acknowledgment information of the channel, the HARQ acknowledgment information carried is N×D bits, N is the number of PRBs in one subband, and D is the total number of possible DMRS cyclic shift values; the processing module is specifically configured to:

    Determining the position of the bit corresponding to the HARQ acknowledgment information of the terminal in the N×D bits according to the following formula:

    

    or,

    

    Where i represents the location index of the HARQ acknowledgment information of the terminal in the N×D bits,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
41. The terminal according to claim 38, wherein one of the DCIs carries the HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×M bits, and N is a subband. The number of PRBs in the process; the processing module is specifically used to:

    Determining, by the following formula, a position of a bit corresponding to the HARQ acknowledgment information of the terminal in the N×M bits:

    

    or,

    

    Where i is the position index of the HARQ acknowledgment information of the terminal in the N×M bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1.
42. The terminal according to claim 38, wherein one of the DCIs carries HARQ acknowledgment information of the uplink data channel in the M subbands, and the HARQ acknowledgment information carried is N×D×M bits, and N is one. The number of PRBs in the subband, D is the total number of possible values of the DMRS cyclic shift; the processing module is specifically used to:

    Determining the position of the bit corresponding to the HARQ confirmation information of the terminal in the N×D×M bits according to the following formula:

    

    or,

    

    or,

    

    or,

    

    or,

    

    or,

    

    Where i is the position index of the HARQ acknowledgment information of the terminal in the N bits, and m is a subband number, and the value ranges from 0, 1, ..., M-1,

    

    The number of the PRB assigned to the terminal, in the range of 0, 1, ..., N-1, n _DMRS is the number of the DMRS cyclic shift, which ranges from 0, 1, ..., D-1.
43. The terminal according to any one of claims 34 to 42, wherein the DCI is transmitted in a common search space.
44. The terminal according to claim 43, wherein the DCI is transmitted through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.

Images