CN105634689B - A kind of feedback method and device of HARQ confirmation message - Google Patents

A kind of feedback method and device of HARQ confirmation message Download PDF

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Publication number
CN105634689B
CN105634689B CN201410637897.9A CN201410637897A CN105634689B CN 105634689 B CN105634689 B CN 105634689B CN 201410637897 A CN201410637897 A CN 201410637897A CN 105634689 B CN105634689 B CN 105634689B
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acknowledgement information
harq acknowledgement
terminal
dci
bits
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CN105634689A (en
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邢艳萍
沈祖康
潘学明
徐伟杰
高雪娟
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems

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

Abstract

The embodiment of the invention discloses the feedback methods and device of a kind of HARQ confirmation message.The embodiment of the present invention determines the HARQ confirmation message for needing the uplink data channels fed back to terminal by the network equipment；The network equipment sends DCI to the terminal, and the HARQ confirmation message of the uplink data channels is carried in the DCI.In embodiments of the present invention, a kind of new DCI format is defined, the carrying HARQ confirmation message in the DCI is realized, to realize the feedback of HARQ confirmation message.

Description

HARQ acknowledgement information feedback method and device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for feeding back HARQ (Hybrid Automatic repeat request) acknowledgment information.
Background
DCI (Downlink Control Information) is used to transmit scheduling Information and uplink power Control Information for Downlink and uplink data transmission. Depending on the application and the information content, DCI is divided into different formats (DCI formats). One piece of DCI may be carried by a PDCCH (Physical Downlink Control Channel) or an EPDCCH (Enhanced Physical Downlink Control Channel).
An uplink of an LTE (Long Term Evolution) system adopts a synchronous multi-process stop-wait HARQ mechanism, and retransmission must occur at a predefined time. The LTE system supports synchronous non-adaptive HARQ retransmissions and synchronous adaptive HARQ retransmissions. In the prior art, a PHICH (Physical Hybrid ARQ Indicator Channel) is used to carry HARQ acknowledgement (ACK/NACK) information for an uplink shared Channel (UL-SCH) packet. Because the ACK/NACK information is represented by 1bit signaling, the information length is very short, and the transmission performance of the ACK/NACK is ensured by adopting modes of repeated coding, low-order modulation (BPSK), orthogonal extension, scrambling, time-frequency diversity mapping and the like.
With the rise of the internet of things, the support of Machine Type Communication (MTC) in the LTE system is receiving more and more attention. Physical layer enhancements for MTC are being claimed in 3GPP Release 13. In order to reduce the cost of MTC UEs (User's Equipment, i.e. terminals), a UE type is newly defined, and both uplink and downlink only support 1.4MHz radio frequency bandwidth.
Since the PHICH carrying the HARQ response information for the uplink shared channel data packet is transmitted in the full bandwidth, the UE supporting only the 1.4MHz radio frequency bandwidth cannot receive the PHICH, and at present, there is no feedback scheme for the HARQ acknowledgement information for the MTC UE supporting only the 1.4MHz radio frequency bandwidth.
Disclosure of Invention
The invention provides a feedback method and a feedback device for hybrid automatic repeat request (HARQ) acknowledgement information, which are used for realizing the feedback of the HARQ acknowledgement information.
The embodiment of the invention provides a feedback method of hybrid automatic repeat request (HARQ) acknowledgement information, which comprises the following steps:
the network equipment determines HARQ acknowledgement information of an uplink data channel needing to be fed back to the terminal;
and the network equipment sends downlink control information DCI to the terminal, wherein the DCI carries the HARQ acknowledgement information of the uplink data channel.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, the DCI carrying the HARQ acknowledgement information is scrambled using a radio network temporary identity RNTI dedicated for the HARQ acknowledgement information feedback.
Preferably, before the network device sends the DCI to the terminal, the network device further includes a process of encoding HARQ acknowledgement information carried in the DCI, where the encoding process includes:
adding a Cyclic Redundancy Check (CRC) code to the HARQ acknowledgement information, and scrambling by using the special RNTI (radio network temporary identifier) fed back by the HARQ acknowledgement information and the CRC code to obtain scrambled HARQ acknowledgement information;
carrying out convolutional coding on the scrambled HARQ acknowledgement information;
and carrying out rate matching on the HARQ confirmation information after convolutional coding.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and a bit in the bit sequence corresponds to a PRB allocated to a terminal, or a bit in the bit sequence corresponds to a PRB allocated to the terminal and a demodulation reference symbol (DMRS) cyclic shift; the sub-band refers to a Physical Resource Block (PRB) set in a system bandwidth;
and when the network equipment sends the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the bit sequence according to the corresponding relation.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
when the network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the HARQ acknowledgement information is nxd 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 network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the N × D bits according to the following formula:
or,
wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
when the network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the nxm bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm 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 network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the nxdxm bits according to the following formula:
or,
or,
or,
or,
or,
wherein i represents the position index of the HARQ acknowledgement information of the terminal in the N bits, M is the subband number with the value range of 0, 1, …, M-1,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
Another method for feeding back HARQ acknowledgement information according to an embodiment of the present invention includes:
a terminal receives downlink control information DCI sent by network equipment;
and the terminal acquires the HARQ acknowledgement information of the uplink data channel carried in the DCI.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, in the process of acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI, the terminal descrambles the HARQ acknowledgement information carried in the DCI using the RNTI dedicated to the HARQ acknowledgement information feedback.
Preferably, the obtaining, by the terminal, HARQ acknowledgement information of an uplink data channel carried in the DCI includes:
the terminal performs rate de-matching on the received data to obtain HARQ acknowledgement information after rate de-matching;
the terminal decodes the HARQ acknowledgement information after rate de-matching;
and the terminal descrambles the decoded HARQ confirmation information by using the RNTI special for the HARQ confirmation information feedback.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and a bit in the bit sequence corresponds to a PRB allocated to a terminal, or a bit in the bit sequence corresponds to a PRB allocated to the terminal and a demodulation reference symbol (DMRS) cyclic shift; the sub-band refers to a Physical Resource Block (PRB) set in a system bandwidth;
and when the terminal receives the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the bit sequence according to the corresponding relation.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
when the terminal receives the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the HARQ acknowledgement information is nxd 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, determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by D bits according to the following formula:
or,wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
when the terminal receives the DCI, determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the N × M bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,to be allocated toAnd the value range of the PRB number of the terminal is 0, 1, … and N-1.
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm 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, determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the NxDxM bits according to the following formula:
or,
or,
or,
or,
or,
wherein i represents the position index of the HARQ acknowledgement information of the terminal in the N bits, M is the subband number with the value range of 0, 1, …, M-1,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
The base station provided by the embodiment of the invention comprises:
the processing module is used for determining HARQ acknowledgement information of an uplink data channel which needs to be fed back to the terminal;
and the sending module is used for sending downlink control information DCI to the terminal, wherein the DCI carries the HARQ acknowledgement information of the uplink data channel.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, the DCI carrying the HARQ acknowledgement information is scrambled using an RNTI dedicated to the HARQ acknowledgement information feedback.
Preferably, the processing module is further configured to:
before DCI is sent to the terminal, adding a Cyclic Redundancy Check (CRC) code to the HARQ acknowledgement information, and scrambling by using an RNTI (radio network temporary identifier) special for the HARQ acknowledgement information feedback and the CRC code to obtain scrambled HARQ acknowledgement information;
carrying out convolutional coding on the scrambled HARQ acknowledgement information;
and carrying out rate matching on the HARQ confirmation information after convolutional coding.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and a bit in the bit sequence corresponds to a PRB allocated to a terminal, or a bit in the bit sequence corresponds to a PRB allocated to the terminal and a demodulation reference symbol (DMRS) cyclic shift; the sub-band refers to a Physical Resource Block (PRB) set in a system bandwidth;
the processing module is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the bit sequence according to the corresponding relation.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total possible value of demodulation reference symbol cyclic shift dmrscyclicshift;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the NxD bits according to the following formula:
or,
wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the NxM bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number,the value ranges from 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the NxDxM bits according to the following formula:
or,
or,
or,
or,
or,
whereinI represents the position index of the HARQ acknowledgement information of the terminal in the N bits, M is the subband number with a value range of 0, 1, …, M-1,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
The embodiment of the invention provides a terminal, which comprises:
a receiving module, configured to receive DCI sent by a network device;
and the processing module is used for acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, in the process of acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI, the terminal descrambles the HARQ acknowledgement information carried in the DCI using the RNTI dedicated to the HARQ acknowledgement information feedback.
Preferably, the processing module is further configured to:
the terminal performs rate de-matching on the received data to obtain HARQ acknowledgement information after rate de-matching;
the terminal decodes the HARQ acknowledgement information after rate de-matching;
and the terminal descrambles the decoded HARQ confirmation information by using the RNTI special for the HARQ confirmation information feedback.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and a bit in the bit sequence corresponds to a PRB allocated to a terminal, or a bit in the bit sequence corresponds to a PRB allocated to the terminal and a demodulation reference symbol (DMRS) cyclic shift; the sub-band refers to a Physical Resource Block (PRB) set in a system bandwidth;
the processing module is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the bit sequence according to the corresponding relation.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by D bits according to the following formula:
or,
wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by M bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processing module is specifically configured to:
determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the NxDxM bits according to the following formula:
or,
or,
or,
or,
or,
wherein i represents the position index of the HARQ acknowledgement information of the terminal in the N bits, M is the subband number with the value range of 0, 1, …, M-1,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
The embodiment of the invention determines the HARQ acknowledgement information of the uplink data channel needing to be fed back to the terminal through network equipment; and the network equipment sends DCI to the terminal, wherein the DCI carries the HARQ acknowledgement information of the uplink data channel. In the embodiment of the invention, a new DCI format is defined, and HARQ acknowledgement information is carried in the DCI, so that the feedback of the HARQ acknowledgement information is realized.
Drawings
Fig. 1 is a flowchart illustrating a method for feeding back HARQ acknowledgement information according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an encoding process of HARQ acknowledgement information according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for feeding back HARQ acknowledgement information according to a second embodiment of the present invention;
FIG. 4 is a diagram illustrating resource allocation according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a base station according to a third embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal according to a fourth embodiment of the present invention;
fig. 7 is a schematic diagram of a base station according to a fifth embodiment of the present invention;
fig. 8 is a schematic diagram of a terminal according to a sixth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart illustrating a feedback method of HARQ acknowledgement information according to an embodiment of the present invention, including the following steps 101 to 102:
step 101, a network device determines HARQ acknowledgement information of an uplink data channel to be fed back to a terminal;
and 102, the network equipment sends DCI to the terminal, wherein the DCI carries the HARQ acknowledgement information of the uplink data channel.
The DCI described in the above-mentioned flow is the DCI newly defined in the embodiment of the present invention, and the DCI is used to carry the HARQ acknowledgement information (including HARQ ACK and/or HARQ NACK) for feedback.
Optionally, the DCI may carry one or more HARQ acknowledgement information. If the DCI carries multiple HARQ acknowledgement messages, the multiple HARQ acknowledgement messages may belong to one terminal or multiple terminals.
Preferably, one DCI may carry HARQ acknowledgement information of an uplink data channel in one or more subbands, where a subband refers to one physical resource block PRB set in a system bandwidth. And the HARQ confirmation information of the uplink data channel in one or more sub-bands is a bit sequence, and the bits in the bit sequence have a corresponding relation with the PRB allocated to the terminal, or the bits in the bit sequence have a corresponding relation with the PRB allocated to the terminal and the demodulation reference symbol cyclic shift DMRS cyclic shift. In step 102, when the network device sends the DCI, the position of the bit corresponding to the HARQ acknowledgement information that needs to be fed back to the terminal in the bit sequence may be determined according to the correspondence.
In the following, three scenarios are taken as examples, and the positions of bits corresponding to HARQ acknowledgement information that needs to be fed back to the terminal and is determined by the network device in the HARQ acknowledgement information bit sequence are described.
Scene one:
one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one sub-band, the carried HARQ acknowledgement information is N bits, one bit corresponds to the HARQ acknowledgement information of one PRB, and N is the number of PRBs in one sub-band.
When the network device sends the DCI, determining, according to the following formula (1), a position of a bit corresponding to HARQ acknowledgement information that needs to be fed back to the terminal in the N bits:
… … … … … … … … … … … … formula (1)
Wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Scene two:
one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS (demodulation reference signal) cyclic shift.
When the network device sends the DCI, determining, according to the following formula (2-1) or formula (2-2), a position of a bit corresponding to HARQ acknowledgement information that needs to be fed back to the terminal in the N × D bits:
… … … … … … … … … … formula (2-1)
… … … … … … … … … … formula (2-2)
Wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Scene three:
one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, the carried HARQ acknowledgement information is N multiplied by M bits, and N is the number of PRBs in one subband.
When the network device sends the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N × M bits according to the following formula (3-1) or formula (3-2):
… … … … … … … … … … … … formula (3-1)
… … … … … … … … … … … … formula (3-2)
Wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
Scene four:
one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, the carried HARQ acknowledgement information is N multiplied by D multiplied by M bits, N is the number of PRBs in one subband, and D is the total possible value of DMRS cyclic shift;
when the network device sends the DCI, determining a position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the nxd × M bits 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):
… … … … … … … … … … … … formula (4-1)
… … … … … … … … … … … … formula (4-2)
… … … … … … … … … … … … formula (4-3)
… … … … … … … … … … … … formula (4-4)
… … … … … … … … … … … … formula (4-5)
… … … … … … … … … … … … formula (4-6)
Wherein i represents the position index of the HARQ acknowledgement information of the terminal in the N bits, M is the subband number with the value range of 0, 1, …, M-1,and the value range of the PRB allocated to the terminal is 0, 1, …, N-1, the value range of the nDMRS is the number of the DMRS cyclic shift, and the value range of the nDMRS cyclic shift is 0, 1, … and D-1.
Considering that HARQ acknowledgement information belonging to a plurality of terminals may be carried in one DCI, in order to ensure that the plurality of terminals can receive HARQ acknowledgement information belonging to themselves, the HARQ acknowledgement information carried in the DCI may be scrambled using an RNTI dedicated to the HARQ acknowledgement information feedback. The RNTI may be pre-configured or pre-agreed by the network side, so that the terminals can descramble the received DCI or HARQ acknowledgement information by using the RNTI.
The network device also includes a process of encoding the HARQ acknowledgement information carried in the DCI before sending the DCI to the terminal. In this embodiment of the present invention, the encoding process may include:
adding a Cyclic Redundancy Check (CRC) code to the HARQ acknowledgement information, and scrambling by using a Radio Network Temporary Identifier (RNTI) special for the HARQ acknowledgement information feedback and the CRC code to obtain scrambled HARQ acknowledgement information; then, carrying out convolutional coding on the scrambled HARQ acknowledgement information; and carrying out rate matching on the HARQ confirmation information after convolutional coding.
Fig. 2 shows an encoding process for HARQ acknowledgement information carried in the DCI. One DCI carries a plurality of HARQ acknowledgement messages, each HARQ acknowledgement message is represented by 1bit, and may be represented as a bit sequence a0，a1，…，aA-1Wherein A is the number of the HARQ acknowledgement information; cascading the A HARQ acknowledgement information, adding CRC codes, scrambling by using RNTI special for the HARQ acknowledgement information feedback and the CRC to obtain a scrambled HARQ acknowledgement information bit sequence c0，c1，…，cK-1(ii) a To c0，c1，…，cK-1Carrying out convolutional coding to obtain HARQ acknowledgement information bit sequence d after convolutional coding0 (i)，d1 (i)，…，dK-1 (i)(ii) a Then to d0 (i)，d1 (i)，…，dK-1 (i)Carrying out rate matching to obtain a bit sequence e0，e1，…，eE-1。
If one DCI feeds back multiple HARQ-ACK messages for one terminal, scrambling may be performed using RNTI and CRC dedicated to the terminal after adding CRC.
Preferably, the DCI is transmitted within a common search space. For example, the DCI may be transmitted through a physical downlink control channel, the physical downlink control channel is transmitted in a data region, and the physical downlink control channel may support a common search space.
The DCI in the embodiment of the present invention may be sent through a physical downlink channel.
In an application scenario, because both uplink and Downlink of a low-cost MTC (Machine Type Communication) UE in an LTE system only support a 1.4MHz radio frequency bandwidth, when the UE accesses a system with a bandwidth greater than 1.4MHz, an original PDCCH (Physical Downlink Control Channel) and PHICH Channel continue to be transmitted in a Control region, the mtcc cannot receive the PDCCH and PHICH, where the PHICH is used to carry HARQ acknowledgement information and the PDCCH is used to carry DCI. Therefore, a physical downlink control channel, which may be referred to as an M-PDCCH, needs to be transmitted in the data region to carry information carried by the PDCCH and PHICH of the control region. The M-PDCCH, an Enhanced Physical Downlink Control Channel (Enhanced Physical Downlink Control Channel) and a PDSCH multiplex a data region in a frequency division manner. In this case, DCI for carrying HARQ acknowledgement information in the embodiment of the present invention may be transmitted through the M-PDCCH.
The embodiment of the invention determines the HARQ acknowledgement information of the uplink data channel needing to be fed back to the terminal through network equipment; and the network equipment sends DCI to the terminal, wherein the DCI carries the HARQ acknowledgement information of the uplink data channel. In the embodiment of the invention, a new DCI format is defined, and HARQ acknowledgement information is carried in the DCI, so that the feedback of the HARQ acknowledgement information is realized.
Fig. 3 is a flowchart illustrating a method for feeding back HARQ acknowledgement information according to a second embodiment of the present invention, including:
step 301, a terminal receives downlink control information DCI sent by a network device;
step 302, the terminal acquires HARQ acknowledgement information of an uplink data channel carried in the DCI.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, the terminal performs rate de-matching on the received data to obtain HARQ acknowledgement information after rate de-matching;
decoding the HARQ confirmation information after rate de-matching;
and descrambling the decoded HARQ confirmation information.
Preferably, one DCI may carry HARQ acknowledgement information of an uplink data channel in one or more subbands, where a subband refers to one physical resource block PRB set in a system bandwidth. The HARQ acknowledgement information of the uplink data channel in one or more sub-bands is a bit sequence, and the bits in the bit sequence have a corresponding relation with PRBs allocated to the terminal, or the bits in the bit sequence have a corresponding relation with the PRBs allocated to the terminal and a demodulation reference symbol (DMRS) cyclic shift; the sub-band refers to a Physical Resource Block (PRB) set in a system bandwidth;
when the terminal receives the DCI, the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the bit sequence may be determined according to the correspondence.
In the following, three scenarios are taken as examples, and the position of the bit corresponding to the HARQ acknowledgement information of the terminal determined by the terminal in the HARQ acknowledgement information bit sequence is described.
Scene one:
one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one subband, the carried HARQ acknowledgement information is N bits, one bit corresponds to the HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband.
And when the terminal receives the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the formula (1).
For example, N is 6, that is, 6 PRBs are included in one MTC sub-band, and the 6 PRBs in one MTC sub-band are numbered as 0, 1, …, 5 in the order from low to high in the frequency domain; the DCI0 carries HARQ acknowledgement information of an uplink data channel in an MTC sub-band 0, and the DCI1 carries HARQ acknowledgement information of an uplink data channel in an MTC sub-band 1; as shown in fig. 4, terminal UE1 is allocated PRB #1 in MTC sub-band 0, UE2 is allocated PRB #4 in MTC sub-band 1, and UE2 hops within a subframe.
According to the formula (1), when the UE1 receives the DCI0, it determines that the bits corresponding to the HARQ acknowledgement information are a of the DCI0 according to the allocated PRB #11(ii) a When the UE2 receives the DCI1, it is determined that the bits corresponding to the HARQ acknowledgement information are a of the DCI1 according to the allocated PRB #44。
Scene two:
one DCI carries HARQ acknowledgement information of an uplink data channel in one sub-band, wherein the carried HARQ acknowledgement information is N multiplied by D bits, N is the number of PRBs in one sub-band, and D is the total possible value of DMRS cyclic shift;
and when the terminal receives the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by D bits according to the formula (2-1) or the formula (2-2).
For example, N is 6, that is, one subband includes 6 PRBs, and the 6 PRBs in one subband are numbered 0, 1, …, 5 in the order from the lower to the higher in the frequency domain; the DCI0 carries the HARQ acknowledgement information of the uplink data channel in the sub-band 0, and the DCI1 carries the HARQ acknowledgement information of the uplink data channel in the sub-band 1; UE1 is allocated PRB #1 in subband 0, UE2 is allocated PRB #4 in subband 1; and the possible values of the DMRS cyclic shift are 0, 1, 2 and 3. The DMRS cyclic shift indicated in the DCI scheduling information allocated by the UE1 is 2, and then nDMRS is 2; the resource of the UE2 is pre-allocated, and if there is no corresponding scheduling DCI, nDMRS is 0.
According to the formula (2-1), when the UE1 receives the DCI0, it is determined that the bit corresponding to the HARQ acknowledgement information is a of the DCI0 according to the allocated PRB #1 and nDMRS # 26(ii) a When the UE2 receives the DCI1, it determines that the bit corresponding to the HARQ acknowledgement information is a of the DCI1 according to the allocated PRB #4 and nDMRS ═ 016。
According to the formula (2-2),when the UE1 receives the DCI0, it determines that the bit corresponding to the HARQ acknowledgement information is a of the DCI0 according to the allocated PRB #1 and nDMRS 213(ii) a When the UE2 receives the DCI1, it determines that the bit corresponding to the HARQ acknowledgement information is a of the DCI1 according to the allocated PRB #4 and nDMRS ═ 04。
Scene three:
one DCI carries HARQ acknowledgement information of an uplink data channel in M sub-bands, wherein the carried HARQ acknowledgement information is N multiplied by M bits, and N is the number of PRBs in one sub-band;
and when the terminal receives the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by M bits according to the formula (3-1) or the formula (3-2).
For example, N is 6, that is, one subband includes 6 PRBs, and the 6 PRBs in one subband are numbered 0, 1, …, 5 in the order from the lower to the higher in the frequency domain; one DCI carries HARQ acknowledgement information of an uplink data channel in a sub-band 0 and a sub-band 1; UE1 is allocated PRB #1 in subband 0, UE2 is allocated PRB #4 in subband 1,
according to the formula (3-1), when the UE1 receives the DCI, it determines that the bit corresponding to the HARQ acknowledgement information is a in the DCI according to the PRB #1 in the subband 0 to which the UE is allocated1(ii) a When the UE2 receives the DCI, it determines, according to the PRB #4 in the sub-band 1 allocated to the UE, that the bit corresponding to the HARQ acknowledgement information is a in the DCI10。
According to the formula (3-2), when the UE1 receives the DCI, it determines that the bit corresponding to the HARQ acknowledgement information is a in the DCI according to the PRB #1 in the subband 0 to which the UE is allocated2(ii) a When the UE2 receives the DCI, it determines, according to the PRB #4 in the sub-band 1 allocated to the UE, that the bit corresponding to the HARQ acknowledgement information is a in the DCI9。
Scene four:
one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, the carried HARQ acknowledgement information is N multiplied by D multiplied by M bits, N is the number of PRBs in one subband, and D is the total possible value of DMRS cyclic shift;
and when the network equipment sends the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by D multiplied by M bits according to the formula (4-1) or the formula (4-2) or the formula (4-3) or the formula (4-4) or the formula (4-5) or the formula (4-6).
For example, N is 6, that is, one subband includes 6 PRBs, and the 6 PRBs in one subband are numbered 0, 1, …, 5 in the order from the lower to the higher in the frequency domain; one DCI carries HARQ acknowledgement information of an uplink data channel in a sub-band 0 and a sub-band 1; UE1 is allocated PRB #1 in subband 0 and UE2 is allocated PRB #4 in subband 1. And the possible values of the DMRS cyclic shift are 0, 1, 2 and 3. The DMRS cyclic shift indicated in the DCI scheduling information allocated by the UE1 is 2, and then nDMRS is 2; the resource of the UE2 is pre-allocated, and if there is no corresponding scheduling DCI, nDMRS is 0.
According to the formula (4-1), when the UE1 receives the DCI, it determines that the bit corresponding to the HARQ acknowledgement information is a in the DCI according to the PRB #1 and nDMRS ═ 2 in the subband 0 to which the UE is allocated6(ii) a When the UE2 receives the DCI, it determines, according to the PRB #4 in the sub-band 1 allocated to the UE, that the bit corresponding to the HARQ acknowledgement information is a in the DCI40。
The method for determining the bits corresponding to the HARQ acknowledgement information by other formulas is not described in detail.
In the embodiment of the present invention, the decoding process of the terminal corresponds to the encoding process of the network side, and details are not described here.
Preferably, the DCI is transmitted within a common search space. For example, the DCI may be transmitted through a physical downlink control channel, the physical downlink control channel is transmitted in a data region, and the physical downlink control channel may support a common search space.
The embodiment of the invention receives downlink control information DCI sent by network equipment through a terminal, and obtains HARQ acknowledgement information of an uplink data channel carried in the DCI. In the embodiment of the invention, a new DCI format is defined, and HARQ acknowledgement information is carried in the DCI, so that the feedback of the HARQ acknowledgement information is realized.
For the above method flow, embodiments of the present invention further provide a base station and a terminal, and specific contents of the base station and the terminal may be implemented with reference to the above method, which is not described herein again.
Fig. 5 is a schematic diagram of a base station according to a third embodiment of the present invention, where the base station includes:
a processing module 501, configured to determine HARQ acknowledgement information of an uplink data channel that needs to be fed back to a terminal;
a sending module 502, 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 acknowledgement messages.
Preferably, the DCI carrying the HARQ acknowledgement information is scrambled using an RNTI dedicated to the HARQ acknowledgement information feedback.
Preferably, the processing module 501 is further configured to:
before DCI is sent to the terminal, adding a Cyclic Redundancy Check (CRC) code to the HARQ acknowledgement information, and scrambling by using an RNTI (radio network temporary identifier) special for the HARQ acknowledgement information feedback and the CRC code to obtain scrambled HARQ acknowledgement information;
carrying out convolutional coding on the scrambled HARQ acknowledgement information;
and carrying out rate matching on the HARQ confirmation information after convolutional coding.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and a bit in the bit sequence corresponds to a PRB allocated to a terminal, or a bit in the bit sequence corresponds to a PRB allocated to the terminal and a demodulation reference symbol (DMRS) cyclic shift; the sub-band refers to a Physical Resource Block (PRB) set in a system bandwidth;
the processing module 501 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the bit sequence according to the corresponding relation.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processing module 501 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N bits according to the formula (1).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total possible value of demodulation reference symbol cyclic shift dmrscyclicshift;
the processing module 501 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by D bits according to the formula (2-1) or the formula (2-2).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processing module 501 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by M bits according to the formula (3-1) or the formula (3-2).
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processing module 501 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by D multiplied by M bits according to the formula (4-1) or the formula (4-2) or the formula (4-3) or the formula (4-4) or the formula (4-5) or the formula (4-6).
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent 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 a fourth embodiment of the present invention, where the terminal includes:
a receiving module 601, configured to receive downlink control information DCI sent by a network device;
a processing module 602, configured to acquire HARQ acknowledgement information of an uplink data channel carried in the DCI.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, the processing module 602 descrambles the HARQ acknowledgement information carried in the DCI by using an RNTI dedicated to the HARQ acknowledgement information feedback in the process of acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI.
Preferably, the processing module 602 is further configured to:
the terminal performs rate de-matching on the received data to obtain HARQ acknowledgement information after rate de-matching;
the terminal decodes the HARQ acknowledgement information after rate de-matching;
and the terminal descrambles the decoded HARQ confirmation information by using the RNTI special for the HARQ confirmation information feedback.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and a bit in the bit sequence corresponds to a PRB allocated to a terminal, or a bit in the bit sequence corresponds to a PRB allocated to the terminal and a demodulation reference symbol (DMRS) cyclic shift; the sub-band refers to a Physical Resource Block (PRB) set in a system bandwidth;
the processing module 602 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the bit sequence according to the corresponding relation.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processing module 602 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the formula (1).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processing module 602 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by D bits according to the formula (2-1) or the formula (2-2).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processing module 602 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by M bits according to the formula (3-1) or the formula (3-2).
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processing module 602 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by D multiplied by M bits according to the formula (4-1) or the formula (4-2) or the formula (4-3) or the formula (4-4) or the formula (4-5) or the formula (4-6).
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent 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 a fifth embodiment of the present invention, where the base station includes:
the processor 701 is configured to read the program in the memory 703 and execute the following processes: determining HARQ acknowledgement information of an uplink data channel needing to be fed back to a terminal; sending downlink control information DCI to the terminal through a transceiver 702, wherein the DCI carries HARQ acknowledgement information of the uplink data channel;
a transceiver 702 for receiving and transmitting data under the control of the processor 701.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, the DCI carrying the HARQ acknowledgement information is scrambled using an RNTI dedicated to the HARQ acknowledgement information feedback.
Preferably, the processor 701 is further configured to:
before DCI is sent to the terminal, adding a Cyclic Redundancy Check (CRC) code to the HARQ acknowledgement information, and scrambling by using an RNTI (radio network temporary identifier) special for the HARQ acknowledgement information feedback and the CRC code to obtain scrambled HARQ acknowledgement information;
carrying out convolutional coding on the scrambled HARQ acknowledgement information;
and carrying out rate matching on the HARQ confirmation information after convolutional coding.
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and bits in the bit sequence have a corresponding relationship with PRBs allocated to a terminal; the sub-band refers to a continuous physical resource block PRB subset in the system bandwidth;
the processor 701 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the bit sequence according to the PRB allocated to the terminal.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processor 701 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N bits according to the formula (1).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total possible value of demodulation reference symbol cyclic shift dmrscyclicshift;
the processor 701 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by D bits according to the formula (2-1) or the formula (2-2).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processor 701 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N bits according to the formula (3-1) or the formula (3-2).
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processor 701 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by D multiplied by M bits according to the formula (4-1) or the formula (4-2) or the formula (4-3) or the formula (4-4) or the formula (4-5) or the formula (4-6).
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
Where in fig. 7 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 701 and various circuits of memory represented by memory 703 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 702 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium.
The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.
Fig. 8 is a schematic diagram of a terminal according to a sixth embodiment of the present invention, where the terminal includes:
a processor 801 for reading the program in the memory 803, and executing the following processes: receiving downlink control information DCI transmitted by a network device through a transceiver 802; acquiring HARQ acknowledgement information of an uplink data channel carried in the DCI;
a transceiver 802 for receiving and transmitting data under the control of the processor 801.
Preferably, the DCI carries one or more HARQ acknowledgement messages.
Preferably, the processor 801 descrambles the HARQ acknowledgement information carried in the DCI by using an RNTI dedicated to the HARQ acknowledgement information feedback in the process of acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI.
Preferably, the processor 801 is further configured to:
the terminal performs rate de-matching on the received data to obtain HARQ acknowledgement information after rate de-matching;
the terminal decodes the HARQ acknowledgement information after rate de-matching;
and the terminal descrambles the decoded HARQ confirmation information by using the RNTI special for the HARQ confirmation information feedback.
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one or more subbands, where the HARQ acknowledgement information of the uplink data channel in the one or more subbands is a bit sequence, and bits in the bit sequence have a corresponding relationship with PRBs allocated to a terminal; the sub-band refers to a continuous physical resource block PRB subset in the system bandwidth;
the processor 801 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the bit sequence according to the PRB allocated to the terminal.
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processor 801 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the formula (1).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, where the HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processor 801 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by D bits according to the formula (2-1) or the formula (2-2).
Preferably, one DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processor 801 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by M bits according to the formula (3-1) or the formula (3-2).
Preferably, one piece of DCI carries HARQ acknowledgement information of an uplink data channel in M subbands, where the carried HARQ acknowledgement information is nxdxm bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processor 801 is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N multiplied by D multiplied by M bits according to the formula (4-1) or the formula (4-2) or the formula (4-3) or the formula (4-4) or the formula (4-5) or the formula (4-6).
Preferably, the DCI is transmitted within a common search space.
Preferably, the DCI is sent through a physical downlink control channel, and the physical downlink control channel is transmitted in a data region.
Where in FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 803, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.
From the above, it can be seen that: the embodiment of the invention determines the HARQ acknowledgement information of the uplink data channel needing to be fed back to the terminal through network equipment; and the network equipment sends DCI to the terminal, wherein the DCI carries the HARQ acknowledgement information of the uplink data channel. In the embodiment of the invention, a new DCI format is defined, and HARQ acknowledgement information is carried in the DCI, so that the feedback of the HARQ acknowledgement information is realized.
It should be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may 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, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (44)

1. A feedback method for HARQ acknowledgement information comprises the following steps:
the network equipment determines HARQ acknowledgement information of an uplink data channel needing to be fed back to the terminal;
the network equipment sends downlink control information DCI to the terminal, wherein the DCI carries HARQ acknowledgement information of the uplink data channel; one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one or more sub-bands, wherein the HARQ acknowledgement information of the uplink data channel in the one or more sub-bands is a bit sequence, and bits in the bit sequence have a corresponding relation with PRBs (physical resource blocks) allocated to a terminal or have a corresponding relation with bits in the bit sequence, the PRBs allocated to the terminal and DMRS (demodulation reference symbol) cyclic shift; the subband refers to one physical resource block, PRB, set within the system bandwidth.
2. The method of claim 1, wherein one or more HARQ acknowledgement information is carried in the DCI.
3. The method of claim 1, wherein the DCI carrying HARQ acknowledgement information is scrambled using a Radio Network Temporary Identity (RNTI) dedicated for the HARQ acknowledgement information feedback.
4. The method of claim 1, wherein before the network device sends the DCI to the terminal, the network device further comprises a process of encoding HARQ acknowledgement information carried in the DCI, and the encoding process comprises:
adding a Cyclic Redundancy Check (CRC) code to the HARQ acknowledgement information, and scrambling by using the special RNTI (radio network temporary identifier) fed back by the HARQ acknowledgement information and the CRC code to obtain scrambled HARQ acknowledgement information;
carrying out convolutional coding on the scrambled HARQ acknowledgement information;
and carrying out rate matching on the HARQ confirmation information after convolutional coding.
5. The method of claim 1, wherein when the network device sends the DCI, the network device determines, according to the correspondence, a position of a bit corresponding to HARQ acknowledgement information that needs to be fed back to the terminal in the bit sequence.
6. The method of claim 5, wherein one DCI carries HARQ acknowledgement information of an uplink data channel within one subband, the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
when the network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
7. The method of claim 5, wherein one DCI carries HARQ acknowledgement information of an uplink data channel within one sub-band, the HARQ acknowledgement information is NxD bits, N is the number of PRBs within one sub-band, and D is the total number of possible values for DMRS cyclic shift;
when the network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the N × D bits according to the following formula:
or,
wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,for PR assigned to the terminalThe number of B is in the range of 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
8. The method of claim 5, wherein one DCI carries HARQ acknowledgement information of an uplink data channel within M subbands, where the HARQ acknowledgement information is N × M bits, and N is the number of PRBs in one subband;
when the network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the nxm bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
9. The method of claim 5, wherein one of the DCIs carries HARQ acknowledgement information for an uplink data channel within M subbands, the carried HARQ acknowledgement information is NxDxM bits, N is the number of PRBs in one subband, and D is the total number of possible values for DMRS cyclic shift;
when the network device sends the DCI, determining the position of a bit corresponding to HARQ acknowledgement information to be fed back to the terminal in the nxdxm bits according to the following formula:
or,
or,
or,
or,
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxDxM bits, M is a subband number with a value range of 0, 1, …, M-1,the value range of PRB number allocated to the terminal is 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
10. The method of any of claims 1 to 9, wherein the DCI is transmitted within a common search space.
11. The method of claim 10, wherein the DCI is transmitted through a physical downlink control channel transmitted in a data region.
12. A feedback method for HARQ acknowledgement information comprises the following steps:
a terminal receives downlink control information DCI sent by network equipment;
the terminal acquires HARQ acknowledgement information of an uplink data channel carried in the DCI;
one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one or more sub-bands, wherein the HARQ acknowledgement information of the uplink data channel in the one or more sub-bands is a bit sequence, and a corresponding relation exists between bits in the bit sequence and PRBs allocated to a terminal, or a corresponding relation exists between bits in the bit sequence and cyclic shifts of the PRBs allocated to the terminal and a demodulation reference symbol (DMRS); the subband refers to one physical resource block, PRB, set within the system bandwidth.
13. The method of claim 12, wherein one or more HARQ acknowledgement information is carried in the DCI.
14. The method of claim 12, wherein in the process of acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI, the terminal descrambles the HARQ acknowledgement information carried in the DCI using an RNTI dedicated to the HARQ acknowledgement information feedback.
15. The method of claim 12, wherein the acquiring, by the terminal, HARQ acknowledgement information of an uplink data channel carried in the DCI comprises:
the terminal performs rate de-matching on the received data to obtain HARQ acknowledgement information after rate de-matching;
the terminal decodes the HARQ acknowledgement information after rate de-matching;
and the terminal descrambles the decoded HARQ confirmation information by using the RNTI special for the HARQ confirmation information feedback.
16. The method of claim 12, wherein when the terminal receives the DCI, a position of a bit corresponding to HARQ acknowledgement information of the terminal in the bit sequence is determined according to the correspondence.
17. The method of claim 16, wherein one DCI carries HARQ acknowledgement information of an uplink data channel within one subband, the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
when the terminal receives the DCI, determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
18. The method of claim 16, wherein one DCI carries HARQ acknowledgement information for an uplink data channel in one subband, the HARQ acknowledgement information being nxd bits, N being the number of PRBs in one subband, and D being the total number of possible values for DMRS cyclic shift;
when the terminal receives the DCI, determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by D bits according to the following formula:
or,wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,the value range of PRB number allocated to the terminal is 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
19. The method of claim 16, wherein one DCI carries HARQ acknowledgement information for an uplink data channel within M subbands, where the HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
when the terminal receives the DCI, determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the N × M bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
20. The method of claim 16, wherein one DCI carries HARQ acknowledgement information for an uplink data channel within M subbands, where the HARQ acknowledgement information is nxd × M bits, N is the number of PRBs in one subband, and D is the total number of possible values for DMRS cyclic shift;
when the terminal receives the DCI, determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the NxDxM bits according to the following formula:
or,
or,
or,
or,
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxDxM bits, M is a subband number with a value range of 0, 1, …, M-1,the value range of PRB number allocated to the terminal is 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
21. The method of any of claims 12 to 20, wherein the DCI is transmitted within a common search space.
22. The method of claim 21, wherein the DCI is transmitted through a physical downlink control channel transmitted in a data region.
23. A base station, comprising:
the processing module is used for determining HARQ acknowledgement information of an uplink data channel which needs to be fed back to the terminal;
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; one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one or more sub-bands, wherein the HARQ acknowledgement information of the uplink data channel in the one or more sub-bands is a bit sequence, and bits in the bit sequence have a corresponding relation with PRBs (physical resource blocks) allocated to a terminal or have a corresponding relation with bits in the bit sequence, the PRBs allocated to the terminal and DMRS (demodulation reference symbol) cyclic shift; the subband refers to one physical resource block, PRB, set within the system bandwidth.
24. The base station of claim 23, wherein the DCI carries one or more HARQ acknowledgement information.
25. The base station of claim 23, wherein the DCI carrying the HARQ acknowledgement information is scrambled using an RNTI dedicated to the HARQ acknowledgement information feedback.
26. The base station of claim 23, wherein the processing module is further configured to:
before DCI is sent to the terminal, adding a Cyclic Redundancy Check (CRC) code to the HARQ acknowledgement information, and scrambling by using an RNTI (radio network temporary identifier) special for the HARQ acknowledgement information feedback and the CRC code to obtain scrambled HARQ acknowledgement information;
carrying out convolutional coding on the scrambled HARQ acknowledgement information;
and carrying out rate matching on the HARQ confirmation information after convolutional coding.
27. The base station of claim 23, wherein the processing module is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the bit sequence according to the corresponding relation.
28. The base station of claim 27, wherein one DCI carries HARQ acknowledgement information of an uplink data channel within one subband, the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
29. The base station of claim 27, wherein one DCI carries HARQ acknowledgement information for an uplink data channel within one subband, the HARQ acknowledgement information being nxd bits, N being the number of PRBs within one subband, and D being the total number of possible values for DMRS cyclic shift;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the NxD bits according to the following formula:
or,
wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,the value range of PRB number allocated to the terminal is 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
30. The base station of claim 27, wherein one DCI carries HARQ acknowledgement information for an uplink data channel within M subbands, where the HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the NxM bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
31. The base station of claim 27, wherein one of the DCIs carries HARQ acknowledgement information for an uplink data channel within M subbands, where the HARQ acknowledgement information is nxdxm bits, N is the number of PRBs in one subband, and D is the total number of possible values for DMRS cyclic shift;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information needing to be fed back to the terminal in the NxDxM bits according to the following formula:
or,
or,
or,
or,
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxDxM bits, M is a subband number with a value range of 0, 1, …, M-1,the value range of PRB number allocated to the terminal is 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
32. The base station of any of claims 23 to 31, wherein the DCI is transmitted within a common search space.
33. The base station of claim 32, wherein the DCI is transmitted via a physical downlink control channel transmitted in a data region.
34. A terminal, comprising:
a receiving module, configured to receive DCI sent by a network device;
a processing module, configured to acquire HARQ acknowledgement information of an uplink data channel carried in the DCI;
one piece of DCI carries HARQ acknowledgement information of an uplink data channel in one or more sub-bands, wherein the HARQ acknowledgement information of the uplink data channel in the one or more sub-bands is a bit sequence, and a corresponding relation exists between bits in the bit sequence and PRBs allocated to a terminal, or a corresponding relation exists between bits in the bit sequence and cyclic shifts of the PRBs allocated to the terminal and a demodulation reference symbol (DMRS); the subband refers to one physical resource block, PRB, set within the system bandwidth.
35. The terminal of claim 34, wherein the DCI carries one or more HARQ acknowledgement information.
36. The terminal of claim 34, wherein in the process of acquiring the HARQ acknowledgement information of the uplink data channel carried in the DCI, the terminal descrambles the HARQ acknowledgement information carried in the DCI using an RNTI dedicated to the HARQ acknowledgement information feedback.
37. The terminal of claim 34, wherein the processing module is further configured to:
the terminal performs rate de-matching on the received data to obtain HARQ acknowledgement information after rate de-matching;
the terminal decodes the HARQ acknowledgement information after rate de-matching;
and the terminal descrambles the decoded HARQ confirmation information by using the RNTI special for the HARQ confirmation information feedback.
38. The terminal of claim 34, wherein the processing module is specifically configured to:
and determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the bit sequence according to the corresponding relation.
39. The terminal of claim 38, wherein one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, the carried HARQ acknowledgement information is N bits, one bit corresponds to HARQ acknowledgement information of one PRB, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N bits according to the following formula:
wherein i represents a position index of HARQ acknowledgement information of the terminal in the N bits,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
40. The terminal of claim 38, wherein one DCI carries HARQ acknowledgement information of an uplink data channel in one subband, the HARQ acknowledgement information is nxd bits, N is the number of PRBs in one subband, and D is the total number of possible values of DMRS cyclic shift;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by D bits according to the following formula:
or,
wherein i denotes a position index of HARQ acknowledgement information of the terminal in the NxD bits,the value range of PRB number allocated to the terminal is 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
41. The terminal of claim 38, wherein one DCI carries HARQ acknowledgement information of an uplink data channel within M subbands, where the HARQ acknowledgement information is nxm bits, and N is the number of PRBs in one subband;
the processing module is specifically configured to:
determining the position of the bit corresponding to the HARQ acknowledgement information of the terminal in the N multiplied by M bits according to the following formula:
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxM bits, M is a subband number with a value range of 0, 1, …, M-1,and the value range of the PRB number allocated to the terminal is 0, 1, … and N-1.
42. The terminal of claim 38, wherein one DCI carries HARQ acknowledgement information for an uplink data channel within M subbands, where the HARQ acknowledgement information is nxd × M bits, N is the number of PRBs in one subband, and D is the total number of possible values for DMRS cyclic shift;
the processing module is specifically configured to:
determining the position of the bits corresponding to the HARQ acknowledgement information of the terminal in the NxDxM bits according to the following formula:
or,
or,
or,
or,
or,
wherein i represents a position index of the HARQ acknowledgement information of the terminal in the NxDxM bits, M is a subband number with a value range of 0, 1, …, M-1,the value range of PRB number allocated to the terminal is 0, 1, …, N-1, NDMRSThe value range of the number of the DMRS cyclic shift is 0, 1, … and D-1.
43. The terminal of any of claims 34 to 42, wherein the DCI is transmitted within a common search space.
44. The terminal of claim 43, wherein the DCI is transmitted through a Physical Downlink Control Channel (PDCCH), and the PDCCH is transmitted in a data region.
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