CN111865512A

CN111865512A - Hybrid automatic repeat request feedback processing method, device and equipment

Info

Publication number: CN111865512A
Application number: CN202010302294.9A
Authority: CN
Inventors: 司倩倩; 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-04-30
Filing date: 2020-04-16
Publication date: 2020-10-30
Anticipated expiration: 2040-04-16
Also published as: WO2020220998A1; CN111865512B

Abstract

The invention provides a method, a device and equipment for processing hybrid automatic repeat request feedback, and relates to the technical field of communication. The method comprises the following steps: receiving first downlink control information, wherein the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, and the first downlink control information includes first indication information, the first indication information is used for indicating the position of the same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is the physical downlink shared channel scheduled by the first downlink control information; and feeding back first feedback information on the feedback time slot, wherein the first feedback information comprises feedback information of all first physical downlink shared channels scheduled corresponding to the first downlink control information. The scheme of the invention realizes the purpose of avoiding the overlarge DCI overhead in multi-slot scheduling.

Description

Hybrid automatic repeat request feedback processing method, device and equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a device for processing harq feedback.

Background

At present, a new 5G air interface NR supports a PDCCH for physical downlink control channel to schedule PDSCH transmission of a PDSCH, and for carrier aggregation configured for SCS at intervals of different subcarriers, when SCS configured for scheduling carriers is smaller than SCS configured for scheduled carriers, in order to reduce PDCCH overhead on scheduling carriers, it also supports a PDCCH for scheduling different PDSCH transmission in multiple time slots.

However, for the downlink control information DCI scheduled in multiple slots, only the feedback position of one scheduled PDSCH can be indicated, which may cause DCI overhead to be too large.

Disclosure of Invention

The invention aims to provide a method, a device and equipment for processing hybrid automatic repeat request feedback, so as to avoid the overlarge DCI overhead in multi-slot scheduling.

In order to achieve the above object, the present invention provides a method for processing harq feedback, comprising:

receiving first downlink control information, wherein the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, and the first downlink control information includes first indication information, the first indication information is used for indicating the position of the same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is the physical downlink shared channel scheduled by the first downlink control information;

And feeding back first feedback information on the feedback time slot, wherein the first feedback information comprises feedback information of all first physical downlink shared channels scheduled corresponding to the first downlink control information.

Wherein the first indication information comprises a slot offset;

after receiving the first downlink control information, the method further includes:

taking the Kth time slot after the first time slot corresponding to the second physical downlink shared channel as the feedback time slot; the second physical downlink shared channel is the last physical downlink shared channel in the first physical downlink shared channel, or the second physical downlink shared channel is the first physical downlink shared channel on a carrier with the smallest subcarrier spacing among a plurality of carriers, and K is the time slot offset.

Wherein, after receiving the first downlink control information, the method further comprises:

generating first feedback information of M x N x L bits for all physical downlink shared channels scheduled by the first downlink control information;

m, L is a feedback information parameter, N is the number of physical downlink shared channel timeslots which can be maximally scheduled by the first downlink control information, or N is the number of carriers which can be maximally scheduled by the first downlink control information, or N is the number of PDSCH transmissions which can be maximally scheduled by the first downlink control information;

When the user equipment is not configured to use the code block group-based transmission, L ═ 1; when the user equipment is configured to use the transmission based on the code block groups, L is the maximum code block group number of each configured code word;

when the user equipment is configured to use multi-codeword transmission and is not configured to use hybrid automatic repeat request acknowledgement (HARQ-ACK) spatial domain combining, M is 2; when the user equipment is configured to use single codeword transmission or configured to use HARQ-ACK spatial domain combining, M is 1.

Wherein, when N is the number of physical downlink shared channel time slots which can be scheduled by the first downlink control information at maximum, under the condition of cross-carrier scheduling,

μ₁subcarrier spacing allocation for physical downlink shared channelSetting of parameter, mu₂And configuring parameters for the subcarrier spacing of the physical downlink control channel.

Wherein the generating of the first feedback information of M × N × L bits for all the physical downlink shared channels scheduled by the first downlink control information includes:

determining a time slot or carrier sequencing number of a second time slot or a second carrier in a plurality of time slots or a plurality of carriers scheduled by the first downlink control information according to a second time slot or a second carrier in which the first physical downlink shared channel is located;

And determining the position of the second feedback information of the first physical downlink shared channel in the first feedback information according to the time slot or carrier sequencing number.

Wherein, the determining the position of the second feedback information of the first physical downlink shared channel in the first feedback information according to the timeslot or carrier sequence number includes:

if the bit number of the second feedback information is equal to 1, placing the second feedback information at the xth bit position in the first feedback information;

if the bit number of the second feedback information is greater than 1, placing the second feedback information at p consecutive bit positions starting from the y-th bit position in the first feedback information, or placing the second feedback information at p bit positions starting from the x-th bit position and with N as a period in the first feedback information;

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

placing third feedback information on the rest bit positions of the first feedback information; wherein the content of the first and second substances,

The remaining bit positions are bit positions of the first feedback information except for the bit position of the second feedback information; the third feedback information is hybrid automatic repeat request negative information.

When the ue is configured with multi-carrier transmission and the number of physical downlink shared channel slots where the first downlink control information is schedulable at maximum on each carrier of a current multi-carrier is different, before or after receiving the first downlink control information, the method further includes:

receiving second downlink control information, wherein the second downlink control information is used for single-time slot scheduling, multi-time slot scheduling or channel release, and under the condition that the second downlink control information is used for multi-time slot scheduling, the number of physical downlink shared channel time slots with the maximum schedulable capability of the second downlink control information is greater than or less than the number of physical downlink shared channel time slots with the maximum schedulable capability of the first downlink control information;

the feeding back the first feedback information on the feedback slot includes:

feeding back fourth feedback information on the feedback time slot, wherein the fourth feedback information comprises the first feedback information and fifth feedback information, and the fifth feedback information is feedback information corresponding to single-time-slot scheduling, multi-time-slot scheduling and channel release.

Before feeding back fourth feedback information on the feedback time slot, the method further includes:

generating the fourth feedback information;

the fourth feedback information is the cascade connection of a first sub-codebook and a second sub-codebook, the feedback information corresponding to single-time-slot scheduling or channel release is the first sub-codebook, and the feedback information corresponding to multi-time-slot scheduling is the second sub-codebook; or, the fourth feedback information is a concatenation of multiple subcodebooks, and the feedback information belonging to the carrier channels of the same multi-slot scheduling configuration is the same subcodebook.

Wherein the second sub-codebook is M x N when the second downlink control information is used for multi-slot scheduling_maxInformation of L bits;

wherein M, L is the feedback information parameter, N_maxFor the first downlink control information and the second downlinkControlling the number of the physical downlink shared channel time slots with the maximum schedulable in the information; i is the total number of the first downlink control information and the second downlink control information;

When the ue is configured with multiple groups of multi-carrier scheduling and the number of physical downlink shared channels or carriers in the multiple groups of multi-carrier scheduling where the first downlink control information is schedulable at maximum is different, before or after receiving the first downlink control information, the method further includes:

receiving third downlink control information, wherein the third downlink control information is used for single carrier scheduling, multi-carrier scheduling or channel release, and under the condition that the third downlink control information is used for multi-carrier scheduling, the number of physical downlink shared channels or carriers which can be scheduled by the third downlink control information at the maximum is greater than or less than the number of physical downlink shared channels or carriers which can be scheduled by the first downlink control information at the maximum;

the feeding back the first feedback information on the feedback slot includes:

feeding back sixth feedback information on the feedback time slot, wherein the sixth feedback information comprises the first feedback information and seventh feedback information, and the seventh feedback information is feedback information corresponding to single carrier scheduling, multi-carrier scheduling and channel release.

Wherein, before feeding back the sixth feedback information on the feedback timeslot, the method further includes:

generating the sixth feedback information;

the sixth feedback information is the cascade connection of a third sub-codebook and a fourth sub-codebook, the feedback information corresponding to single carrier scheduling or channel release is the third sub-codebook, and the feedback information corresponding to multi-carrier scheduling is the fourth sub-codebook; or the sixth feedback information is the concatenation of a plurality of sub-codebooks, and the feedback information of the carrier channels belonging to the same multi-carrier scheduling configuration is the same sub-codebook.

Wherein the fourth sub-codebook is M '. multidot.N ' when the third downlink control information is used for multi-carrier scheduling '_maxL '. I' bits of information;

wherein M ' and L ' are feedback information parameters, N '_maxThe number of the physical downlink shared channels or carriers which can be scheduled to the maximum in the first downlink control information and the third downlink control information is the number of the physical downlink shared channels or carriers which can be scheduled to the maximum in the first downlink control information and the third downlink control information; i' is a total number of the first downlink control information and the third downlink control information;

when the user equipment is not configured to use the code block group-based transmission, L ═ 1; when the user equipment is configured to use the transmission based on the code block groups, L' is the maximum code block group number of each configured code word;

When the user equipment is configured to use multi-codeword transmission and is not configured to use HARQ-ACK spatial domain combining, M' is 2; when the user equipment is configured to use single codeword transmission or configured to use HARQ-ACK spatial domain combining, M' is 1.

Wherein the first downlink control information and the second downlink control information include:

second indication information and third indication information; wherein the content of the first and second substances,

the second indication information is the total number of the physical downlink control channels transmitting the downlink control information for single-time-slot scheduling, multi-time-slot scheduling or channel release to the current physical downlink control channel detection position and the current carrier, and the third indication information is the total number of the physical downlink control channels transmitting the downlink control information for single-time-slot scheduling, multi-time-slot scheduling or channel release to the current physical downlink control channel detection position.

Wherein the second indication information and the third indication information are counted based on whether multi-slot scheduling is performed; alternatively, the first and second electrodes may be,

the second indication information and the third indication information are counted based on carriers of different multi-slot scheduling configurations.

Sending first downlink control information, wherein the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, and the first downlink control information includes first indication information, the first indication information is used for indicating the position of the same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is the physical downlink shared channel scheduled by the first downlink control information;

and receiving first feedback information fed back on the feedback time slot, wherein the first feedback information comprises feedback information of all first physical downlink shared channels scheduled corresponding to the first downlink control information.

Wherein the first indication information comprises a slot offset;

after the sending the first downlink control information, the method further includes:

Wherein the receiving the first feedback information fed back on the feedback timeslot includes:

receiving first feedback information of M x N x L bits fed back on the feedback time slot;

μ₁configuring parameter mu for subcarrier spacing of physical downlink shared channel ₂And configuring parameters for the subcarrier spacing of the physical downlink control channel.

Wherein, the receiving the first feedback information of M × N × L bits fed back on the feedback timeslot includes:

Wherein, x is the time slot sequence number, y is M X-1, and p is M L.

obtaining the rest bit positions of the first feedback information and placing third feedback information; wherein the content of the first and second substances,

When the ue is configured with multi-carrier transmission and the number of physical downlink shared channel slots where the first downlink control information is schedulable at maximum on each carrier of a current multi-carrier is different, before or after the first downlink control information is sent, the method further includes:

sending second downlink control information, wherein the second downlink control information is used for single-time slot scheduling, multi-time slot scheduling or channel release, and under the condition that the second downlink control information is used for multi-time slot scheduling, the number of physical downlink shared channel time slots with the maximum schedulable capability of the second downlink control information is greater than or less than the number of physical downlink shared channel time slots with the maximum schedulable capability of the first downlink control information;

The receiving the first feedback information fed back on the feedback time slot includes:

and receiving fourth feedback information fed back on the feedback time slot, wherein the fourth feedback information comprises the first feedback information and fifth feedback information, and the fifth feedback information is feedback information corresponding to single-time-slot scheduling, multi-time-slot scheduling and channel release.

wherein M, L is the feedback information parameter, N_maxThe number of the physical downlink shared channel time slots which can be dispatched in the first downlink control information and the second downlink control information is the maximum; i is the total number of the first downlink control information and the second downlink control information;

When the ue is configured with multiple groups of multi-carrier scheduling and the number of physical downlink shared channels or carriers in the multiple groups of multi-carrier scheduling where the first downlink control information is schedulable at maximum is different, before or after the first downlink control information is sent, the method further includes:

sending third downlink control information, wherein the third downlink control information is used for single carrier scheduling, multi-carrier scheduling or channel release, and under the condition that the third downlink control information is used for multi-carrier scheduling, the number of physical downlink shared channels or carriers which can be scheduled by the third downlink control information at the maximum is greater than or less than the number of physical downlink shared channels or carriers which can be scheduled by the first downlink control information at the maximum;

and receiving feedback of sixth feedback information on the feedback time slot, wherein the sixth feedback information comprises the first feedback information and seventh feedback information, and the seventh feedback information is feedback information corresponding to single carrier scheduling, multi-carrier scheduling and channel release.

the second indication information is the total number of the physical downlink control channels for transmitting the downlink control information used for single-time slot scheduling, multi-time slot scheduling or channel release to the current physical downlink control channel detection position and the current carrier, and the third indication information is the total number of the physical downlink control channels for transmitting the downlink control information used for single-time slot scheduling, multi-time slot scheduling or channel release before the current physical downlink control channel detection position.

The second indication information and the third indication information are counted based on carriers with different multi-slot scheduling configurations.

In order to achieve the above object, the present invention provides a user equipment comprising a transceiver, a memory, a processor and a computer program stored on the memory and executable on the processor; the processor is used for reading a program in the memory;

the transceiver is to: receiving first downlink control information, wherein the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, and the first downlink control information includes first indication information, the first indication information is used for indicating the position of the same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is the physical downlink shared channel scheduled by the first downlink control information;

Wherein the first indication information comprises a slot offset;

The processor is further configured to:

Wherein the processor is further configured to:

μ₁configuring parameter mu for subcarrier spacing of physical downlink shared channel₂And configuring parameters for the subcarrier spacing of the physical downlink control channel.

Wherein the processor is further configured to:

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

Wherein the processor is further configured to:

Wherein, when the first downlink control information is used for multi-slot scheduling, and when the ue is configured with multi-carrier transmission and the number of physical downlink shared channel slots where the first downlink control information can be scheduled at maximum on each carrier of a current multi-carrier is different, the transceiver is further configured to:

Wherein the processor is further configured to:

generating the fourth feedback information;

Wherein, when the first downlink control information is used for multi-carrier scheduling, and when the ue is configured with multiple groups of multi-carrier scheduling and the number of physical downlink shared channels or carriers in the multiple groups of multi-carrier scheduling that the first downlink control information can be scheduled at the maximum is different, the transceiver is further configured to:

Wherein the processor is further configured to:

generating the sixth feedback information;

In order to achieve the above object, the present invention provides a network device, comprising a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading a program in the memory;

the transceiver is to: sending first downlink control information, wherein the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, and the first downlink control information includes first indication information, the first indication information is used for indicating the position of the same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is the physical downlink shared channel scheduled by the first downlink control information;

Wherein the first indication information comprises a slot offset;

The processor is further configured to:

Wherein the transceiver is further configured to:

Wherein the processor is further configured to:

Wherein, x is the time slot sequence number, y is M X-1, and p is M L.

Wherein the processor is further configured to:

In order to achieve the above object, the present invention provides a hybrid automatic repeat request feedback processing apparatus, comprising:

a first receiving module, configured to receive first downlink control information, where the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, and the first downlink control information includes first indication information, where the first indication information is used to indicate a position of a same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is a physical downlink shared channel scheduled by the first downlink control information;

A first sending module, configured to feed back first feedback information on the feedback timeslot, where the first feedback information includes feedback information of all first physical downlink shared channels scheduled corresponding to the first downlink control information.

a second sending module, configured to send first downlink control information, where the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, and the first downlink control information includes first indication information, where the first indication information is used to indicate a position of a same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is a physical downlink shared channel scheduled by the first downlink control information;

and a second receiving module, configured to receive first feedback information fed back on the feedback time slot, where the first feedback information includes feedback information of all first physical downlink shared channels scheduled corresponding to the first downlink control information.

In order to achieve the above object, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the hybrid automatic repeat request feedback processing method as applied to the user equipment or implements the steps of the hybrid automatic repeat request feedback processing method as applied to the network equipment.

The technical scheme of the invention at least has the following beneficial effects:

the method of the embodiment of the invention firstly receives first Downlink Control Information (DCI) used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, wherein the first DCI comprises first indication information which indicates the position of the same feedback slot corresponding to all Physical Downlink Shared Channels (PDSCHs) scheduled by the first DCI, and the user equipment can determine a feedback slot through the first indication information and feed back the first feedback information on the feedback slot, namely the feedback information of all PDSCHs scheduled by the first DCI, so that the feedback slot of each first PDSCH scheduled by the first DCI multi-slot scheduling, multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels is not required to be respectively indicated, and the problem of overlarge DCI overhead is avoided.

Drawings

Fig. 1 is a flowchart illustrating a hybrid automatic repeat request feedback processing method according to an embodiment of the present invention;

FIG. 2 shows one of the diagrams of multi-slot scheduling;

fig. 3 shows one of the schematic diagrams of multi-carrier scheduling;

fig. 4 is a second flowchart illustrating a hybrid automatic repeat request feedback processing method according to an embodiment of the present invention;

FIG. 5 is a second schematic diagram of multi-slot scheduling;

FIG. 6 is a second schematic diagram of multi-carrier scheduling;

fig. 7 is a flowchart illustrating a hybrid automatic repeat request feedback processing method according to another embodiment of the present invention;

fig. 8 is a schematic structural diagram of a ue according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, an embodiment of the present invention provides a method for processing feedback of a hybrid automatic repeat request, including:

step 101, receiving first downlink control information, where the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, and the first downlink control information includes first indication information, where the first indication information is used to indicate a position of a same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is a physical downlink shared channel of the first downlink control information;

And step 102, feeding back first feedback information on the feedback time slot, where the first feedback information includes feedback information of all first physical downlink shared channels scheduled corresponding to the first downlink control information.

The method of the embodiment of the present invention is applied to the user equipment, and through the

above steps

101 and 102, first downlink control information DCI for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels is received, wherein, the first DCI comprises first indication information which indicates the position of the same feedback time slot corresponding to all Physical Downlink Shared Channels (PDSCHs) scheduled by the first DCI, the user equipment can determine a feedback time slot by the first indication information and feed back the first feedback information on the feedback time slot, that is, the feedback information of all PDSCHs corresponding to the first DCI scheduling is performed, so that there is no need to separately indicate the feedback time slots of the first PDSCHs for the first DCI multi-slot scheduling, the multi-carrier scheduling, or the scheduling of multiple physical downlink shared channel transmissions, thereby avoiding the problem of excessive DCI overhead.

It should be noted that in this embodiment, the first DCI is carried on a physical downlink control channel PDCCH, and PDSCH on different time slots, PDSCH on different carriers, or multiple PDSCH transmissions are scheduled through the first DCI. Specifically, the feedback information is HARQ feedback information.

As shown in the scheduling diagram of fig. 2, the base station configures the ue to use two carrier aggregation transmission, the SCS of carrier 1 is configured to be 15kHz, and the subcarrier spacing of carrier 2 is configured to be 60 kHz. The base station performs cross-carrier scheduling on the PDSCH transmitted on the carrier 2 through the carrier 1, and the physical uplink control channel PUCCH is transmitted on the carrier 1. The PDCCH transmitted in carrier 1 slot n carries DCI, which is used for multi-slot scheduling, and schedules PDSCH transmission in slot 4n +1 and slot 4n +2 on carrier 2. The PDCCH transmitted in carrier 1 slot n +1 carries DCI for multi-slot scheduling, scheduling PDSCH transmissions in slots 4n +4, 4n +5 and 4n +7 on carrier 2.

As shown in the scheduling diagram of fig. 3, the base station configures the ue to use three carrier aggregation transmission, the SCS of carrier 1 is configured to be 15kHz, the subcarrier spacing of carrier 2 is configured to be 15kHz, and the subcarrier spacing of carrier 3 is configured to be 30 kHz. The base station performs multi-carrier scheduling on the PDSCH transmitted on the carrier 1 or the carrier 2 or the carrier 3 through the carrier 1, and the PUCCH is transmitted on the carrier 1. The PDCCH transmitted in carrier 1 time slot n carries DCI, which is used for multi-carrier scheduling, and schedules PDSCH transmission in time slot n on carrier 1, time slot n on carrier 2, and time slot 2n on carrier 3. It should be noted that, here, because the SCS on the carrier 3 is different from other carriers and the SCS is larger, when the DCI scheduled by multiple carriers is scheduled to be transmitted on the carrier 3, only one time slot on the carrier 3 may be scheduled, or multiple time slots may be scheduled on the carrier 3, for example, the DCI scheduled by multiple carriers in the time slot n of the carrier 1 may schedule the PDSCH transmission in the time slot 2n on the carrier 3 and the time slot 2n +1 in addition to the time slot n on the carrier 1 and the time slot n on the carrier 2.

Optionally, in this embodiment, to explicitly feed back the slot position, the first indication information includes a slot offset;

Assuming that the last PDSCH scheduled by the first DCI corresponds to the time slot n, based on the time slot offset K of the first indication information, the time slot n + K is used as a feedback time slot to feed back HARQ feedback information of all PDSCHs scheduled by the first DCI. Or, the time slot n 'corresponding to the PDSCH on the carrier with the smallest SCS among the multiple carriers scheduled by the first DCI may be used to feed back HARQ feedback information of all PDSCHs scheduled by the first DCI with the time slot n' + K as a feedback time slot based on the time slot offset K of the first indication information.

Here, the first time slot is not the time slot position of the current carrier of the second PDSCH, but corresponds to the time slot position on the carrier carrying the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the first DCI. Continuing with the example of fig. 2, the slot offset set (HARQ feedback timing set) configured by the base station contains two values of K: {1,2}. The user equipment determines that a corresponding feedback time slot is a time slot n +2 according to the time slot offset K indicated by the DCI received in the time slot n being 2 and the last PDSCH scheduled corresponding to the time slot n; and determining that the corresponding feedback time slot is the time slot n +2 according to that the time slot offset K indicated by the DCI received in the time slot n +1 is 1 and the last scheduled PDSCH corresponds to the time slot n + 1.

It should be appreciated that the feedback information in this embodiment preferably uses a dynamic feedback codebook. Therefore, optionally, after step 101, further comprising:

Optionally, when N is the number of physical downlink shared channel slots where the first downlink control information can be scheduled maximally, in case of cross-carrier scheduling,

Here,. mu.₁And mu₂Are pre-configured according to the subcarrier spacing SCS configuration of the carriers.

Taking the DCI received in the time slot n in fig. 2 as an example, since the SCS of the carrier 1 is configured to be 15kHz and the subcarrier spacing of the carrier 2 is configured to be 60kHz, μ can be known according to the pre-configuration₁＝2，μ₂When the value is equal to 0

If the user equipment is not configured to use the code block group CGB based transmission and is configured to be configured with single codeword transmission on both carriers, then M × N × L ═ 1 ═ 4 bit feedback information is generated for the DCI scheduled PDSCH in the time slot N. Similarly, in fig. 2, M × N × L — 1 × 4 × 1 — 4 bits of feedback information are generated for the DCI scheduled PDSCH in slot N + 1. Thus, a total of 8 bits of feedback information is generated.

In this embodiment, since the first feedback information corresponds to all the scheduled physical downlink shared channels, in order to better perform feedback on each PDSCH, optionally, the generating the first feedback information with M × N × L bits for all the physical downlink shared channels scheduled by the first downlink control information, as shown in fig. 4, includes:

step 401, determining a time slot or carrier sequence number of a second time slot or a second carrier in a plurality of time slots or a plurality of carriers scheduled by the first downlink control information according to a second time slot or a second carrier in which the first physical downlink shared channel is located;

Step 402, determining a position of the second feedback information of the first physical downlink shared channel in the first feedback information according to the time slot or carrier sequence number.

Here, the second feedback information is feedback information of one PDSCH scheduled by the first DCI, and the user equipment implements feedback of each PDSCH through a corresponding bit position in the generated M × N × L bits of the first feedback information according to

steps

401 and 402.

For example, as shown in fig. 2, DCI received in a time slot n of a carrier 1 schedules a PDSCH in a time slot 4n +1 on a carrier 2, where the time slot arrangement number is 2; PDSCH in time slot 4n +2 on carrier 2 is scheduled with time slot permutation number 3. And since the feedback information of the DCI schedule received in carrier 1 slot n and the feedback information of the DCI schedule received in carrier 1 slot n +1 will be fed back on the same feedback slot,

in view of the corresponding configuration of the user equipment, step 302 specifically comprises:

Wherein, x is the time slot sequence number, y is M X-1, and p is M L.

Here, for the second feedback information, i.e. the certain ACK feedback information, for only one PDSCH, when the bit number is equal to 1, the second feedback information is placed at the xth bit position in the first feedback information, and if PDSCH transmission is scheduled in N slots and the ath slot where M is 1 and L is 1, the corresponding 1-bit feedback information is placed at the ath bit position in the N-bit feedback information. When the bit number is greater than 1, on one hand, the second feedback information may be placed at p consecutive bit positions starting from the y-th bit position in the first feedback information, for example, if M is 2, L is 1 in N time slots, PDSCH transmission is scheduled on the a-th time slot, the corresponding 2-bit feedback information is placed at the 2a-1 and 2 a-th bit positions in the N-bit feedback information; on the other hand, the second feedback information may be placed at p bit positions starting with the x-th bit position in the first feedback information and N being a period, for example, if M is 2, L is 1 in N slots, PDSCH transmission is scheduled on the a-th slot, then the corresponding 2-bit feedback information is placed at the a-th and a + N-th bit positions in the N-bit feedback information.

Continuing with the example of fig. 2, a total of 8 bits of feedback information are generated, where the second bit corresponds to the PDSCH transmitted in carrier 2 slot 4n +1, the third bit corresponds to the PDSCH transmitted in carrier 2 slot 4n +2, the fifth bit corresponds to the PDSCH transmitted in carrier 2 slot 4n +4, the sixth bit corresponds to the PDSCH transmitted in carrier 2 slot 4n +5, and the eighth bit corresponds to the PDSCH transmitted in carrier 2 slot 4n + 7.

In addition, when the number of PDSCH slots actually scheduled by the multi-slot scheduling DCI is smaller than N, the generated first feedback information of M × N × L bits may not completely correspond to the scheduled PDSCH, and thus, the generating of the first feedback information of M × N × L bits for all the physical downlink shared channels scheduled by the first downlink control information may optionally include:

As such, the ue may generate negative NACK feedback information for a time slot in which the PDSCH is not received, e.g., padding 0 in the remaining bit positions of the first feedback information.

Continuing with the example of fig. 2, if the user equipment correctly demodulates all the PDSCHs, the first feedback information (HARQ-ACK codebook) fed back in the PUCCH resource of slot n +2 is 01101101.

Further, based on the configuration of the user equipment, in this embodiment, optionally, when the user equipment is configured with multi-carrier transmission and the number of physical downlink shared channel slots where the first downlink control information is schedulable at maximum on each carrier of a current multi-carrier is different, before or after step 101, the method further includes:

the feeding back the first feedback information on the feedback slot includes:

According to the above, the ue receives the second DCI before or after receiving the first DCI, where the second DCI is used for single-slot scheduling, multi-slot scheduling, or channel release (i.e., semi-persistent scheduling SPS PDSCH release), and the second DCI is used for multi-slot scheduling, where the number of the maximum schedulable physical downlink shared channel slots of the second DCI is greater than or less than the number of the maximum schedulable physical downlink shared channel slots of the first DCI, so that when feeding back the fourth feedback information for the same feedback slot, the ue includes feedback information (fifth feedback information) corresponding to the single-slot scheduling, multi-slot scheduling, or channel release in addition to the first feedback information. In this way, more efficient feedback can be achieved on the feedback slots.

For example, on the basis of the example of fig. 2, it is assumed that the base station further indicates SPS PDSCH release on carrier 2 (channel release) through one DCI in slot n of carrier 1, and also schedules PDSCH transmission in slot n of carrier 1 through another DCI (single slot scheduling), and the feedback slots of both are also slot n + 2. Then the SPS PDSCH release and feedback information for PDSCH in carrier 1 slot n would also be transmitted in the PUCCH resource of slot n + 2.

Optionally, before feeding back the fourth feedback information on the feedback timeslot, the method further includes:

generating the fourth feedback information;

For the implementation of generating the first feedback information and the fifth feedback information, on one hand, according to the type of DCI, the feedback information corresponding to single-slot scheduling or channel release is used as a first sub-codebook, the feedback information corresponding to multi-slot scheduling is used as a second sub-codebook, and the feedback information is obtained by cascading the first sub-codebook and the second sub-codebook; and on the other hand, feedback information of carrier channels belonging to the same multi-slot scheduling configuration is used as the same subcodebook, and is obtained through the cascade connection of a plurality of obtained subcodebooks, wherein the carriers belonging to the same multi-slot scheduling configuration indicate that the number of the physical downlink shared channel slots with the maximum schedulable capability of the first downlink control information is the same, and the plurality of subcodebooks correspond to the feedback information of the carriers with the number of the physical downlink shared channel slots with the maximum schedulable capability of the different first downlink control information. The cascade may sequence the sub-codebooks according to a preset rule, for example, for the cascade of the first sub-codebook and the second sub-codebook, the first sub-codebook may be placed first and then the second sub-codebook may be placed, or the second sub-codebook may be placed first and then the first sub-codebook may be placed.

Further, optionally, in a case that the second downlink control information is used for multi-slot scheduling, the second sub-codebook is M × N_maxInformation of L bits;

Here, for the case where the second DCI is for multi-slot scheduling, the second sub-codebook is M × N with reference to the generation of the first feedback information_maxL I bits of information.

For example, on the basis of the example in fig. 2, it is assumed that the base station further indicates SPS PDSCH release (channel release) on carrier 2 in time slot n of carrier 1 through one DCI, and also schedules PDSCH transmission in time slot n of carrier 1 through another DCI (single slot scheduling), and the feedback time slots of the two are also time slot n +2, and the following implementation exists in the feedback time slots:

The implementation method comprises the following steps: the carrier 1 indicates that the feedback information corresponding to the DCI released by the SPS PDSCH on the carrier 2 and the PDSCH transmitted in the time slot n is one sub-codebook, and the feedback information corresponding to the PDSCH transmitted in the time slot 4n +1/4n +2/4n +4/4n +5/4n +7 of the carrier 2 is one sub-codebook. Assuming that the ue is configured with single codeword transmission on both carriers, the first sub-codebook includes 2 feedback bits, and the second sub-codebook includes 8 feedback bits, and the determination of the 8 bits (corresponding to the feedback information of the two first DCI schedules in fig. 2) is as described above, which is not described herein again. The cascade order is that the 2-bit feedback information corresponding to the DCI which does not use the multi-slot scheduling is before, and the 10-bit feedback information corresponding to the DCI which uses the multi-slot scheduling is after. Of course, the concatenation order may also be that the feedback information corresponding to the DCI using multi-slot scheduling is before the feedback information corresponding to the DCI not using multi-slot scheduling is after the feedback information corresponding to the DCI using multi-slot scheduling.

And the implementation is as follows: the feedback information corresponding to the PDSCH transmitted in the carrier 1 slot n is a sub-codebook, and the feedback information corresponding to the DCI for the SPS PDSCH release on the carrier 2 indicated by the carrier 1 and the DCI for the PDSCH transmitted in the carrier 2 slot 4n +1/4n +2/4n +4/4n +5/4n +7 is a sub-codebook. The user equipment is configured with single codeword transmission on both carriers, the first sub-codebook only contains 1 feedback bit, the second sub-codebook contains 12 feedback bits, that is, 4-bit feedback information is generated for the PDSCH scheduled by 3 DCI respectively. For DCI indicating SPS PDSCH release on carrier 2, the user equipment may generate repeated bit information based on the demodulation result, for example, the user equipment generates 4-bit ACK when demodulation is correct, or generates 4-bit NACK when demodulation fails, or the user equipment may also generate 1-bit effective feedback information, which supplements NACK in the remaining 3-bit positions. The user equipment concatenates the two sub-codebooks to obtain 13-bit feedback information. The specific cascade order may be cascaded according to the carrier number order, for example, 1-bit feedback information corresponding to carrier 1 is before, and 12-bit feedback information corresponding to carrier 2 is after. Of course, 12-bit feedback information corresponding to carrier 2 may precede 1-bit feedback information corresponding to carrier 1.

The implementation is three: there are 3 DCIs in the same PDCCH detection opportunity in time slot n of carrier 1, which are used to indicate SPS PDSCH release on carrier 2, schedule PDSCH transmission in time slot n of carrier 1, schedule PDSCH transmission on carrier 2, and there are 1 DCI in time slot n +1 of carrier 1, so that 4-bit feedback information is generated for each DCI, and 16-bit feedback information is generated altogether. The first 4 bits of information are feedback information for DCI indicating SPS PDSCH release on carrier 2, and the user equipment may generate repeated bit information based on the demodulation result, or may generate 1-bit effective feedback information to supplement NACK at the remaining 3-bit positions. The 5 th to 8 th bit information are feedback information for PDSCH transmission in the carrier 1 slot n, and similarly, the ue may generate repeated bit information based on the demodulation result, or may generate 1-bit effective feedback information, and supplement NACK at the remaining 3-bit positions. The determination of the last 8 bits of information (corresponding to the feedback information of the two first DCI schedules in fig. 2) is as described above, and is not described herein again.

Generally, in this embodiment, whether the DCI is a multi-slot scheduled DCI may be determined according to a DCI format or a carrier configuration corresponding to DCI scheduling information. Such as: the DCI using multi-slot scheduling is DCI format 1_1 corresponding to a PDSCH transmitted on a carrier configured to use multi-slot scheduling, the DCI not using multi-slot scheduling is DCI format 1_0 and DCI format 1_1 corresponding to a PDSCH transmitted on a carrier not configured to use multi-slot scheduling, and the DCI configured to indicate SPS PDSCH release transmitted on the carrier configured to use multi-slot scheduling and DCI format 1_0 corresponding to a PDSCH transmitted on the carrier configured to use multi-slot scheduling.

Further optionally, the first downlink control information and the second downlink control information include:

For example, on the basis of the example of fig. 2, it is assumed that the base station also indicates SPS PDSCH release on carrier 2 in slot n of carrier 1 through one DCI, and also schedules PDSCH transmission in slot n of carrier 1 through another DCI, and the feedback slots of both are also slot n + 2. In the first implementation of the feedback method, the base station sets the C-DAI (second indication information) and the T-DAI (third indication information) in the DCI corresponding to the two sub-codebooks, that is, counts the C-DAI and the T-DAI in the multi-slot scheduling-based DCI and the DCI which does not use the multi-slot scheduling. In the second implementation of the feedback method, the base station sets the C-DAI and the T-DAI in the DCI of the two carriers, that is, counts the C-DAI and the T-DAI in the DCI of the carrier 1 and the DCI of the carrier 2: the carrier 1 time slot n indicates that C-DAI in DCI released by the SPS PDSCH on the carrier 2 is 1, and T-DAI is 2; C-DAI and T-DAI values in DCI transmitted by PDSCH on a time slot 4n +1 and a time slot 4n +2 on a carrier 1 and a time slot n scheduling carrier 2 are both 2; the C-DAI and T-DAI values in the DCI of carrier 1 time slot n +1 are both 3, and PDSCH transmission in time slot 4n +4, time slot 4n +5 and time slot 4n +7 on carrier 2 is scheduled. In the third implementation of the feedback mode, the base station counts the C-DAI and T-DAI in the DCI of the carrier 1 and the DCI of the carrier 2 jointly: in the DCI indicating the SPS PDSCH release on the carrier 2, the PDSCH transmission in the time slot n of the scheduling carrier 1 and the PDSCH transmission on the scheduling carrier 2, the corresponding C-DAI is 1/2/3 respectively, the T-DAI is 3 respectively, and the C-DAI and the T-DAI contained in the DCI in the time slot n +1 of the carrier 1 are 4 respectively.

Referring to fig. 5, it is described that the feedback information corresponding to the carrier using multi-slot scheduling and the carrier not using multi-slot scheduling is divided into two subcodebooks by the ue, and meanwhile, for the subcodebooks using the carrier using multi-slot scheduling, the ue needs to determine the size of the feedback codebook based on the number of the maximum schedulable PDSCH slots of the DCI because there are multiple carriers using multi-slot scheduling and the maximum schedulable slots are different. At this time, the base station configures the user equipment to use three carrier aggregation transmission, with SCS of carrier 1 configured to 15kHz, subcarrier spacing of carrier 2 configured to 30kHz, and subcarrier spacing of carrier 3 configured to 60 kHz. The base station performs cross-carrier scheduling on PDSCH transmitted on carrier 2 and carrier 3 through carrier 1, PUCCH is transmitted on carrier 1, and a HARQ feedback time sequence set configured by the base station comprises two K values: {1,2}. The base station schedules the PDSCH transmission in carrier 1 time slot n in the first PDCCH detection opportunity in carrier 1, and the corresponding C-DAI is 1. PDSCH transmission of carrier 3 time slots 4n +1 and 4n +2 is also scheduled in the first PDCCH detection opportunity of carrier 1, and the corresponding C-DAI and T-DAI are both 1. PDSCH transmission in carrier 2 time slot 2n +1 is scheduled in the second PDCCH detection opportunity of carrier 1, and the corresponding C-DAI and T-DAI are both 2. And the PDSCH transmission of a carrier 3 time slot 4n +4 is scheduled in the third PDCCH detection opportunity of the carrier 1, and the corresponding C-DAI and T-DAI are both 3. And the PDSCH transmission of a carrier 2 time slot 2n +2 is scheduled in the fourth PDCCH detection opportunity of the carrier 1, and the corresponding C-DAI and T-DAI are both 4. The first sub-codebook only contains feedback information corresponding to the PDSCH transmission of the carrier 1 time slot n, and the second sub-codebook contains feedback information of the PDSCH transmission in the carrier 2 and the carrier 3. Assuming that the ue is configured with single-codeword transmission on 3 carriers, the first sub-codebook contains only 1 feedback bit, and the second sub-codebook contains 16-bit feedback information, where the second sub-codebook is determined based on the last received T-DAI being 4 and the maximum number of multi-slot scheduling for carrier 3 being 4. Feedback information of a PDSCH scheduled by DCI whose first 4 bits are C-DAI ═ 1 in the 16-bit feedback information corresponds to time slots 4n to 4n +3 on carrier 3; feedback information of a PDSCH scheduled by DCI whose bits 5-8 are C-DAI ═ 2 corresponds to time slots 2n to 2n +1 on carrier 2 (the user equipment generates 2-bit feedback information for the two time slots, and supplements NACK at the remaining 2-bit positions); feedback information of a PDSCH scheduled by DCI with bits 9-12 being C-DAI ═ 3 corresponds to time slots 4n +4 to 4n +7 on a carrier 3; feedback information of a PDSCH scheduled by DCI with bits 13-16 of C-DAI ═ 4 corresponds to time slots 2n +2 to 2n +3 on carrier 2 (the user equipment generates 2-bit feedback information for the two time slots, and supplements NACK at the remaining 2-bit position); and the user equipment concatenates the two sub-codebooks to finally generate 17-bit feedback information. Assuming that the user equipment correctly receives all PDSCHs, the feedback bit generated by the user equipment is 10110010010001000.

In addition, in this embodiment, optionally, when the user equipment is configured with multiple sets of multi-carrier scheduling and the number of physical downlink shared channels or carriers in the multiple sets of multi-carrier scheduling that can be scheduled by the first downlink control information at maximum is different, before or after step 101, the method further includes:

the feeding back the first feedback information on the feedback slot includes:

According to the above, the ue receives a third DCI before or after receiving the first DCI, where the third DCI is used for single carrier scheduling, multi-carrier scheduling, or channel release (i.e., semi-persistent scheduling SPSPDSCH release), and when the third DCI is used for multi-carrier scheduling, the number of the maximum schedulable physical downlink shared channels or carriers of the third DCI is greater than or less than the number of the maximum schedulable physical downlink shared channels or carriers of the first DCI, so that when feeding back the sixth feedback information for the same feedback slot, the ue includes feedback information (seventh feedback information) corresponding to single carrier scheduling, multi-carrier scheduling, or channel release in addition to the first feedback information. In this way, more efficient feedback can be achieved on the feedback slots.

For example, on the basis of the example in fig. 3, it is assumed that there is also one carrier 4, the subcarrier spacing is 15kHz, the base station performs single carrier scheduling on the carrier 4, the base station further indicates SPS PDSCH release (channel release) on the carrier 2 through one DCI in the time slot n of the carrier 1, and also schedules PDSCH transmission (single slot scheduling) in the time slot n of the carrier 4 through one DCI of the carrier 4, and the number of the two DCI maximum schedulable PDSCHs is greater than or less than the number of the multi-carrier scheduling DCI maximum schedulable PDSCHs on the carrier 1, or the number of the two DCI maximum schedulable carriers is greater than or less than the number of the multi-carrier scheduling DCI maximum schedulable carriers on the carrier 1. The first feedback information as well as the feedback information for SPS PDSCH release and single carrier scheduling would be transmitted in the PUCCH resources of the feedback slot.

Similar to the first downlink control information and the second downlink control information, in this embodiment, optionally, the third downlink control information may also include: fourth indication information and fifth indication information; wherein the content of the first and second substances,

the fourth indication information is the total number of the physical downlink control channels transmitting the downlink control information used for single carrier scheduling, multi-carrier scheduling or channel release to the current physical downlink control channel detection position and the current carrier, and the fifth indication information is the total number of the physical downlink control channels transmitting the downlink control information used for single carrier scheduling, multi-slot scheduling or channel release to the current physical downlink control channel detection position.

Optionally, in the third downlink control information, the fourth indication information and the fifth indication information are counted based on whether the third downlink control information is multi-carrier scheduling; alternatively, the first and second electrodes may be,

the fourth indication information and the fifth indication information are counted based on carriers of different multi-carrier scheduling configurations.

To complete the feedback of the sixth feedback information, optionally, before feeding back the sixth feedback information on the feedback timeslot, the method further includes:

generating the sixth feedback information;

Here, the generation of the sixth feedback information is similar to the generation of the fourth feedback information, and is not described herein again.

Optionally, in a case that the third downlink control information is used for multi-carrier scheduling, the fourth sub-codebook is M '× N'_maxL '. I' bits of information;

Here, for the case where the third DCI is for multi-carrier scheduling, the fourth sub-codebook is M ' × N ' with reference to the generation of the first feedback information '_maxL '. I' bits of information.

Referring to fig. 6, it is described that the user equipment divides feedback information corresponding to carriers using different numbers of scheduled carriers into two subcodebooks, and for the subcodebooks using carriers scheduled in multiple groups of multiple carriers, the user equipment needs to determine the size of the feedback codebook based on the DCI maximum schedulable carriers or the PDSCH transmission number, because there are multiple groups of carriers scheduled in multiple carriers and the maximum schedulable carriers in the multiple groups of multiple carriers are different. At this time, the base station configures the user equipment to use five carrier aggregation transmission, SCS of carrier 1 and carrier 2 is configured to 15kHz, subcarrier spacing of carrier 3 and carrier 4 is configured to 30kHz, and subcarrier spacing of carrier 5 is configured to 60 kHz. The base station performs multi-carrier scheduling on the PDSCH transmitted on the carrier 1 and the carrier 2 through the carrier 1, so that the carrier 1 and the carrier 2 belong to a carrier group of multi-carrier scheduling, and performs multi-carrier scheduling on the PDSCH transmitted on the carrier 3, the carrier 4 and the carrier 5 through the carrier 3, so that the carrier 3, the carrier 4 and the carrier 5 belong to a carrier group of multi-carrier scheduling, the PUCCH is transmitted on the carrier 1, and an HARQ feedback timing set configured by the base station includes two K values: {1,2}. The base station schedules the PDSCH transmission of carrier 1 time slot n in the first PDCCH detection opportunity of carrier 1, and the corresponding C-DAI and T-DAI are 1. PDSCH transmission in carrier 5 time slot 4n +1 is scheduled in the first PDCCH detection opportunity of carrier 3, and the corresponding C-DAI and T-DAI are both 1. The PDSCH transmission of carrier 3 and carrier 4 slot 2n +1 and the PDSCH transmission of carrier 5 slot 4n +2 are scheduled in the second PDCCH detection opportunity of carrier 3, and the corresponding C-DAI and T-DAI are both 2. And the PDSCH transmission of carrier 3 and carrier 4 time slot 2n +2 and the PDSCH transmission of carrier 5 time slot 4n +4 are scheduled in the third PDCCH detection opportunity of carrier 3, and the corresponding C-DAI and T-DAI are both 3. The first sub-codebook only contains feedback information corresponding to the PDSCH transmission of carrier 1 and carrier 2 time slot n, and the second sub-codebook contains feedback information of PDSCH transmission in carrier 3, carrier 4 and carrier 5. Assuming that the ue is configured with single codeword transmission on 3 carriers, the first sub-codebook contains only 2 feedback bits, and the second sub-codebook contains 9-bit feedback information, where the second sub-codebook is determined based on the last received T-DAI ═ 3 and the number of maximum multi-carrier schedules in this carrier group is 3. Feedback information of a PDSCH scheduled by DCI whose first 3 bits are C-DAI ═ 1 in the 9-bit feedback information corresponds to time slots 2n on carrier 3 and carrier 4 and

time slots

4n or 4n +1 on carrier 5; feedback information of a PDSCH scheduled by DCI with bits 4-6 being C-DAI 2 corresponds to time slots 2n +1 on carrier 3 and carrier 4 and time slots 4n +2 or 4n +3 on carrier 5; feedback information of a PDSCH scheduled by DCI with bits 7-9 being C-DAI ═ 3 corresponds to time slots 2n +2 on the carrier 3 and the carrier 4 and time slots 4n +4 or 4n +5 on the carrier 5; the positions where the PDSCH transmission is not received are padded NACKs, i.e., bit 0. And the user equipment concatenates the two sub-codebooks to finally generate 11-bit feedback information. Assuming that the user equipment correctly receives all PDSCHs, the feedback bit generated by the user equipment is 11001111111. It should be noted that, in this embodiment, the DCI of multi-carrier scheduling may schedule a plurality of carriers at most, but actually, one carrier may be scheduled, or a plurality of carriers may be scheduled, and a carrier group of one multi-carrier scheduling may include only one carrier, or may include a plurality of carriers. When SCS of multiple carriers is different, it may be that one DCI schedules PDSCH transmission in multiple slots on a partial carrier, and it may be considered that feedback bits are determined based on the maximum schedulable number of PDSCH transmissions of one DCI, for example, the second carrier group (comprising carrier 3, carrier 4 and carrier 5) of fig. 5, and the multi-carrier scheduled DCI may schedule PDSCH transmission in two slots on carrier 5, so that the maximum schedulable number of PDSCH transmissions of one multi-carrier scheduled DCI is 4 (comprising one PDSCH transmission on carrier 3, one PDSCH transmission on carrier 4 and two PDSCH transmissions on carrier 5), and then 4 bits of information need to be fed back for one DAI count, in this embodiment, for HARQ-ACK feedback carried by PUCCH in carrier 1 slot n +2, a total of 14 bits of information may be included, where the first sub-codebook includes 2 bits, and the second sub-codebook includes 12 bits, the first 4 bits correspond to DCI with DAI ═ 1, the middle 4 bits correspond to DCI with DAI ═ 2, and the last 4 bits correspond to DCI with DAI ═ 3. In summary, the method of the embodiment of the present invention first receives first downlink control information DCI for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, where the first DCI includes first indication information indicating a position of a same feedback slot corresponding to all PDSCH of the first DCI scheduling, and the user equipment can determine a feedback slot through the first indication information and feed back the first feedback information, that is, the feedback information corresponding to all PDSCH of the first DCI scheduling, on the feedback slot, so that it is not necessary to respectively indicate the feedback slots of the first PDSCH of the first DCI multi-slot scheduling, multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, and the problem of excessive DCI overhead is avoided.

As shown in fig. 7, a method for processing feedback of a hybrid automatic repeat request according to an embodiment of the present invention includes:

step 701, sending first downlink control information, where the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, and the first downlink control information includes first indication information, where the first indication information is used to indicate a position of a same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is a physical downlink shared channel scheduled by the first downlink control information;

step 702, receiving first feedback information fed back on the feedback time slot, where the first feedback information includes feedback information of all first physical downlink shared channels scheduled corresponding to the first downlink control information.

Here, the method of the embodiment of the present invention is applied to a network device, such as a base station, the network device first transmits first downlink control information DCI for multi-slot scheduling or for multi-carrier scheduling or for scheduling multiple physical downlink shared channel transmissions, wherein the first DCI includes first indication information indicating a position of the same feedback slot corresponding to all Physical Downlink Shared Channels (PDSCHs) scheduled by the first DCI, so that the network device can determine a feedback time slot through the first indication information, receive the fed back first feedback information on the feedback time slot, that is, the feedback information of all PDSCHs corresponding to the first DCI scheduling is performed, so that there is no need to separately indicate the feedback time slots of each first PDSCH subjected to multi-slot scheduling, multi-carrier scheduling, or scheduling of multiple physical downlink shared channel transmissions, thereby avoiding the problem of excessive DCI overhead.

Wherein the first indication information comprises a slot offset;

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

It should be noted that, the method is applied to the network device, and performs feedback processing corresponding to the method applied to the user equipment, and an implementation manner of the method applied to the user equipment is applicable to the method, and can also achieve the same technical effect, and details are not described herein again.

As shown in fig. 8, a user equipment according to an embodiment of the present invention includes: a transceiver 810, a memory 820, a processor 800 and a computer program stored on the memory 820 and executable on the processor 800; the processor 800 is used to read programs in the memory;

the transceiver 810 is configured to receive first downlink control information, where the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, and the first downlink control information includes first indication information, where the first indication information is used to indicate a position of a same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is a physical downlink shared channel scheduled by the first downlink control information;

Wherein the first indication information comprises a slot offset;

the processor is further configured to:

Wherein the processor is further configured to:

Wherein the processor is further configured to:

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

Wherein the processor is further configured to:

generating the fourth feedback information;

Wherein the processor is further configured to:

generating the sixth feedback information;

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 800 and memory represented by memory 820. 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 810 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 830 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

The user equipment firstly receives first Downlink Control Information (DCI) used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, wherein the first DCI comprises first indication information, the first indication information indicates the position of the same feedback slot corresponding to all Physical Downlink Shared Channels (PDSCHs) scheduled by the first DCI, the user equipment can determine a feedback slot through the first indication information, and the first feedback information, namely the feedback information corresponding to all PDSCHs scheduled by the first DCI, is fed back on the feedback slot, so that the feedback slot of each first PDSCH transmitted by the first DCI multi-slot scheduling, the multi-carrier scheduling or the scheduling of the plurality of physical downlink shared channels is not required to be respectively indicated, and the problem of overlarge DCI overhead is avoided.

As shown in fig. 9, the network device according to the embodiment of the present invention includes: a transceiver 910, a memory 920, a processor 900 and a computer program stored on the memory 920 and executable on the processor 900; the processor 900 is configured to read a program in a memory;

the transceiver 910 is configured to send first downlink control information, where the first downlink control information is used for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of multiple physical downlink shared channels, and the first downlink control information includes first indication information, where the first indication information is used to indicate a position of a same feedback slot corresponding to all first physical downlink shared channels, and the first physical downlink shared channel is a physical downlink shared channel scheduled by the first downlink control information;

Wherein the first indication information comprises a slot offset;

the processor is further configured to:

Wherein the transceiver is further configured to:

Wherein the processor is further configured to:

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

Wherein the processor is further configured to:

Wherein the second sub-codebook is M x N when the second downlink control information is used for multi-slot scheduling _maxInformation of L bits;

In fig. 9, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 900, and various circuits, represented by memory 920, being 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 910 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 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.

The network equipment firstly sends first Downlink Control Information (DCI) for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, wherein the first DCI comprises first indication information which indicates the position of the same feedback slot corresponding to all Physical Downlink Shared Channels (PDSCHs) scheduled by the first DCI, so that the network equipment can determine a feedback slot through the first indication information, and receive the fed back first feedback information on the feedback slot, namely the feedback information corresponding to all PDSCHs scheduled by the first DCI.

Another embodiment of the present invention provides a harq feedback processing apparatus, including:

Wherein the first indication information comprises a slot offset;

the device further comprises:

the first processing module is used for taking the Kth time slot after the first time slot corresponding to the second physical downlink shared channel as the feedback time slot; the second physical downlink shared channel is the last physical downlink shared channel in the first physical downlink shared channel, or the second physical downlink shared channel is the first physical downlink shared channel on a carrier with the smallest subcarrier spacing among a plurality of carriers, and K is the time slot offset.

Wherein the apparatus further comprises:

a second processing module, configured to generate first feedback information with M × N × L bits for all physical downlink shared channels scheduled by the first downlink control information;

Wherein the second processing module comprises:

a first processing sub-module, configured to determine, according to a second time slot or a second carrier where the first physical downlink shared channel is located, a time slot or a carrier sequence number of the second time slot or the second carrier in the multiple time slots or multiple carriers scheduled by the first downlink control information;

and the second processing submodule is used for determining the position of the second feedback information of the first physical downlink shared channel in the first feedback information according to the time slot or carrier sequencing number.

Wherein the second processing sub-module is further configured to:

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

Wherein the first processing module is further configured to:

When the ue is configured with multi-carrier transmission and the number of physical downlink shared channel slots where the first downlink control information is schedulable at maximum on each carrier of a current multi-carrier is different, the apparatus further includes:

A second downlink control information receiving module, configured to receive second downlink control information, where the second downlink control information is used for single-slot scheduling, multi-slot scheduling, or channel release, and in a case that the second downlink control information is used for multi-slot scheduling, the number of physical downlink shared channel slots where the second downlink control information is maximally schedulable is greater than or less than the number of physical downlink shared channel slots where the first downlink control information is maximally schedulable;

the first sending module is further configured to:

Wherein the apparatus further comprises:

the third processing module is used for generating the fourth feedback information;

When the ue is configured with multiple groups of multi-carrier scheduling and the number of physical downlink shared channels or carriers in the multiple groups of multi-carrier scheduling that can be scheduled by the first downlink control information at maximum is different, the apparatus further includes:

A third downlink control information receiving module, configured to receive third downlink control information, where the third downlink control information is used for single carrier scheduling, multi-carrier scheduling, or channel release, and in a case that the third downlink control information is used for multi-carrier scheduling, the number of physical downlink shared channels or carriers that can be scheduled by the third downlink control information at the maximum is greater than or less than the number of physical downlink shared channels or carriers that can be scheduled by the first downlink control information at the maximum;

the first sending module is further configured to:

Wherein the apparatus further comprises:

a sixth feedback information generating module, configured to generate the sixth feedback information;

The device firstly receives first Downlink Control Information (DCI) for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, wherein the first DCI comprises first indication information which indicates the position of the same feedback slot corresponding to all Physical Downlink Shared Channels (PDSCHs) scheduled by the first DCI, and user equipment can determine a feedback slot through the first indication information and feed back the first feedback information on the feedback slot, namely the feedback information corresponding to all PDSCHs scheduled by the first DCI.

It should be noted that the apparatus is an apparatus to which the above-mentioned hybrid automatic repeat request feedback processing method applied to the user equipment is applied, and an implementation manner of the above-mentioned hybrid automatic repeat request feedback processing method applied to the user equipment is applied to the apparatus, and the same technical effect can be achieved.

Wherein the first indication information comprises a slot offset;

the device further comprises:

a fourth processing module, configured to use a kth time slot after a first time slot corresponding to a second physical downlink shared channel as the feedback time slot; wherein the second physical downlink shared channel is a last physical downlink shared channel in the first physical downlink shared channel, or the second physical downlink shared channel is the first physical downlink shared channel on a carrier with a minimum subcarrier spacing among a plurality of carriers, and K is the slot offset

Wherein the second receiving module is further configured to:

Wherein the second receiving module comprises:

a third processing sub-module, configured to determine, according to a second time slot or a second carrier where the first physical downlink shared channel is located, a time slot or a carrier sequence number of the second time slot or the second carrier in the multiple time slots or multiple carriers scheduled by the first downlink control information;

and the fourth processing submodule is used for determining the position of the second feedback information of the first physical downlink shared channel in the first feedback information according to the time slot or carrier sequencing number.

Wherein the fourth processing submodule is further configured to:

Wherein, x is the time slot sequence number, y is M X-1, and p is M L.

Wherein the second receiving module is further configured to:

a second downlink control information sending module, configured to send second downlink control information, where the second downlink control information is used for single-slot scheduling, multi-slot scheduling, or channel release, and in a case that the second downlink control information is used for multi-slot scheduling, the number of physical downlink shared channel slots where the second downlink control information is maximally schedulable is greater than or less than the number of physical downlink shared channel slots where the first downlink control information is maximally schedulable;

The second receiving module is further configured to:

a third downlink control information sending module, configured to send third downlink control information, where the third downlink control information is used for single carrier scheduling, multi-carrier scheduling, or channel release, and in a case that the third downlink control information is used for multi-carrier scheduling, the number of physical downlink shared channels or carriers that can be scheduled by the third downlink control information at the maximum is greater than or less than the number of physical downlink shared channels or carriers that can be scheduled by the first downlink control information at the maximum;

The second receiving module is further configured to:

The device firstly sends first Downlink Control Information (DCI) for multi-slot scheduling or multi-carrier scheduling or scheduling transmission of a plurality of physical downlink shared channels, wherein the first DCI comprises first indication information which indicates the position of the same feedback slot corresponding to all Physical Downlink Shared Channels (PDSCHs) scheduled by the first DCI, so that network equipment can determine a feedback slot through the first indication information, and receive the fed back first feedback information on the feedback slot, namely the feedback information corresponding to all PDSCHs scheduled by the first DCI.

It should be noted that, the apparatus is an apparatus to which the above-mentioned method for processing hybrid automatic repeat request feedback applied to a network device is applied, and an implementation manner of the method for processing hybrid automatic repeat request feedback applied to a network device is applied to the apparatus, and the same technical effect can be achieved.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the embodiment of the method for processing feedback of a hybrid automatic repeat request applied to a user equipment as described above is implemented, or each process of the embodiment of the method for processing feedback of a hybrid automatic repeat request applied to a network device as described above is implemented, and the same technical effect can be achieved, and details are not repeated here to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a user equipment (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for processing hybrid automatic repeat request feedback, comprising:

2. The method of claim 1, wherein the first indication information comprises a slot offset;

3. The method of claim 1, wherein after receiving the first downlink control information, further comprising:

4. The method of claim 3, wherein when N is the number of physical downlink shared channel slots where the first downlink control information is maximally schedulable,

in the case of cross-carrier scheduling,

5. The method according to claim 3, wherein the generating the first feedback information with M x N x L bits for all physical downlink shared channels scheduled by the first downlink control information comprises:

6. The method according to claim 5, wherein the determining, according to the timeslot or carrier sequence number, a position of the second feedback information of the first physical downlink shared channel in the first feedback information includes:

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

7. The method according to claim 5, wherein the generating the first feedback information with M x N x L bits for all physical downlink shared channels scheduled by the first downlink control information comprises:

8. The method of claim 1, wherein when the first downlink control information is used for multi-slot scheduling, when a ue is configured with multi-carrier transmission and the number of physical downlink shared channel slots where the first downlink control information is schedulable at maximum on each carrier of a current multi-carrier is different, before or after receiving the first downlink control information, further comprising:

the feeding back the first feedback information on the feedback slot includes:

9. The method of claim 8, wherein before feeding back fourth feedback information on the feedback slot, further comprising:

generating the fourth feedback information;

10. The method of claim 9, wherein the second sub-codebook is M x N when the second downlink control information is used for multi-slot scheduling_maxInformation of L bits;

wherein M, L is the feedback information parameter, N_maxIs the first downlink control informationAnd the number of the physical downlink shared channel time slots with the maximum schedulable in the second downlink control information; i is the total number of the first downlink control information and the second downlink control information;

11. The method of claim 1, wherein when the user equipment is configured with multiple groups of multi-carrier scheduling and the number of physical downlink shared channels or carriers in the multiple groups of multi-carrier scheduling where the first downlink control information is schedulable at maximum is different, before or after receiving the first downlink control information, the method further comprises:

the feeding back the first feedback information on the feedback slot includes:

12. The method of claim 11, wherein before feeding back the sixth feedback information on the feedback slot, further comprising:

generating the sixth feedback information;

13. The method of claim 12, wherein the fourth sub-codebook is M ' by N ' if the third downlink control information is used for multi-carrier scheduling '_maxL '. I' bits of information;

14. The method of claim 8, wherein the first downlink control information and the second downlink control information comprise:

15. The method of claim 14,

The second indication information and the third indication information are counted based on whether multi-slot scheduling is performed; alternatively, the first and second electrodes may be,

16. A method for processing hybrid automatic repeat request feedback, comprising:

17. The method of claim 16, wherein the first indication information comprises a slot offset;

18. The method of claim 16, wherein the receiving the first feedback information fed back on the feedback slot comprises:

19. The method according to claim 18, wherein when N is the number of physical downlink shared channel slots where the first downlink control information is maximally schedulable,

in the case of cross-carrier scheduling,

20. The method of claim 18, wherein receiving the first feedback information of M x N x L bits fed back on the feedback slot comprises:

21. The method according to claim 20, wherein the determining, according to the timeslot or carrier sequence number, a position of the second feedback information of the first physical downlink shared channel in the first feedback information includes:

wherein, x is the time slot sequence number, y is M X-1, and p is M L.

22. The method of claim 20, wherein receiving the first feedback information of M x N x L bits fed back on the feedback slot comprises:

23. The method of claim 16, wherein when the ue is configured for multi-carrier transmission and the number of physical downlink shared channel slots where the first downlink control information is schedulable at maximum on each carrier of a current multi-carrier is different when the first downlink control information is used for multi-slot scheduling, before or after the sending of the first downlink control information, further comprises:

24. The method of claim 23, wherein the fourth feedback information is a concatenation of a first sub-codebook and a second sub-codebook, the feedback information corresponding to single-slot scheduling or channel release is the first sub-codebook, and the feedback information corresponding to multi-slot scheduling is the second sub-codebook; or, the fourth feedback information is a concatenation of multiple subcodebooks, and the feedback information belonging to the carrier channels of the same multi-slot scheduling configuration is the same subcodebook.

25. The method of claim 24, wherein the second subcode is used for multi-slot scheduling when the second downlink control information is used for multi-slot schedulingOriginally M x N_maxInformation of L bits;

26. The method of claim 16, wherein when the user equipment is configured with multiple multi-carrier scheduling groups and the number of physical downlink shared channels or carriers in the multiple multi-carrier scheduling groups in which the first downlink control information is schedulable at maximum is different, before or after the first downlink control information is sent, the method further comprises:

27. The method of claim 26, wherein the sixth feedback information is a concatenation of a third sub-codebook and a fourth sub-codebook, the feedback information corresponding to single carrier scheduling or channel release is the third sub-codebook, and the feedback information corresponding to multi-carrier scheduling is the fourth sub-codebook; or the sixth feedback information is the concatenation of a plurality of sub-codebooks, and the feedback information of the carrier channels belonging to the same multi-carrier scheduling configuration is the same sub-codebook.

28. The method of claim 27, wherein the fourth sub-codebook is M '. cndot.n ' when the third downlink control information is used for multi-carrier scheduling '_maxL '. I' bits of information;

29. The method of claim 23, wherein the first downlink control information and the second downlink control information comprise:

30. The method of claim 29,

31. A user equipment comprising a transceiver, a memory, a processor and a computer program stored on the memory and executable on the processor; wherein the processor is configured to read a program in the memory;

32. A network device comprising a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor is configured to read a program in the memory;

33. A harq feedback processing apparatus, comprising:

34. A harq feedback processing apparatus, comprising:

35. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the hybrid automatic repeat request feedback processing method according to one of the claims 1 to 15 or the steps of the hybrid automatic repeat request feedback processing method according to one of the claims 16 to 30.