CN111525986A

CN111525986A - Method, device, equipment and storage medium for determining HARQ feedback time sequence

Info

Publication number: CN111525986A
Application number: CN201910103599.4A
Authority: CN
Inventors: 董静; 柯颋; 刘建军; 王启星
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-02-01
Filing date: 2019-02-01
Publication date: 2020-08-11
Anticipated expiration: 2039-02-01
Also published as: CN111525986B

Abstract

The embodiment of the application discloses a method, a device, equipment and a storage medium for determining a HARQ feedback time sequence, wherein the method comprises the following steps: after the terminal successfully listens before sends the LBT, feeding back the confirmation character corresponding to the PDSCH according to the indication of the downlink control information corresponding to the PDSCH; the downlink control information includes a PDSCH-to-HARQ _ feedback timing indicator, where the PDSCH-to-HARQ _ feedback timing indicator indicates an offset value from an acknowledgment character corresponding to the PDSCH to a reference time slot.

Description

Method, device, equipment and storage medium for determining HARQ feedback time sequence

Technical Field

The embodiment of the present application relates to, but is not limited to, a New Radio (NR) technology, and in particular, to a method, an apparatus, a device, and a storage medium for determining a Hybrid Automatic Repeat Request (HARQ) feedback timing.

Background

In NR, in Frequency band (Frequency Range 1, FR1), subcarrier spacing supported by a Physical Uplink Control Channel (PUCCH) is 15KHz, 30KHz, and 60 KHz. Then for larger subcarrier spacings, such as 60KHz, even if K1 takes a Maximum value of 8, the indicated timing relationship is at most 2 milliseconds (ms), much less than the Maximum Channel Occupancy Time (MCOT) window length. That is, in the HARQ-ACK feedback of the New Radio (NR-U) in the Unlicensed band, there is a problem that the number of bits of the indication (PDSCH-to-HARQ _ feedback timing indicator) for characterizing the timing between the Physical Downlink Shared Channel (PDSCH) and the HARQ is insufficient.

Disclosure of Invention

In view of this, embodiments of the present application provide a method and an apparatus, a device, and a storage medium for determining a HARQ feedback timing, so as to solve at least one problem in the related art.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides a method for determining a HARQ feedback time sequence, which comprises the following steps:

after the terminal successfully listens before sends the LBT, feeding back the confirmation character corresponding to the PDSCH according to the indication of the downlink control information corresponding to the PDSCH;

the downlink control information includes a PDSCH-to-HARQ _ feedback timing indicator, where the PDSCH-to-HARQ _ feedback timing indicator indicates an offset value from an acknowledgment character corresponding to the PDSCH to a reference time slot.

after the terminal successfully listens before sends the LBT, the terminal feeds back the confirmation characters corresponding to the partial PDSCH in the MCOT according to the high-level configuration signaling.

the network side equipment utilizes the downlink control information indication corresponding to the PDSCH and is used for feeding back the position of the confirmation character corresponding to the PDSCH;

the network side equipment sends a high-level configuration signaling to the terminal, wherein the high-level configuration signaling is used for indicating the position of a confirmation character corresponding to the PDSCH;

and the high-layer configuration signaling is used for indicating that the acknowledgement character corresponding to the partial PDSCH is fed back in the MCOT.

The embodiment of the application provides a device for determining a HARQ feedback time sequence, which comprises:

a first receiving unit, configured to receive a PDSCH sent by a network side device;

a first feedback unit, configured to feed back, according to an instruction of downlink control information corresponding to a PDSCH, a confirmation character corresponding to the PDSCH after performing listen-before-send LBT success;

a third receiving unit, configured to receive a high-level configuration signaling sent by a network side device;

and the second feedback unit is used for feeding back the confirmation characters corresponding to the partial PDSCH in the MCOT according to the high-level configuration signaling after the successful listen before send LBT.

a first determining unit, configured to determine an offset value from a confirmation character corresponding to the PDSCH to a reference time slot;

an indication unit, configured to utilize downlink control information indication corresponding to the PDSCH, and configured to feed back a position of an acknowledgment character corresponding to the PDSCH;

a second determining unit, configured to determine a position for feeding back a confirmation character corresponding to the PDSCH;

a sending unit, configured to send a high-level configuration signaling to a terminal, where the high-level configuration signaling is used to indicate a position of a confirmation character corresponding to a feedback PDSCH;

An embodiment of the present application provides an apparatus for determining a HARQ feedback timing sequence, which includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor implements the steps in the above method when executing the program.

Embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps in the above method.

In the embodiment of the application, after the successful listen before send LBT is carried out by the terminal, the confirmation character corresponding to the PDSCH is fed back according to the indication of the downlink control information corresponding to the PDSCH; the downlink control information comprises a PDSCH-to-HARQ _ feedback timing indicator, wherein the PDSCH-to-HARQ _ feedback timing indicator represents the offset of an acknowledgement character corresponding to the PDSCH to a reference time slot; in this way, the problem that the number of bits for the indication representing the timing relationship between the PDSCH and the HARQ is insufficient in the HARQ-ACK feedback can be solved.

Drawings

Fig. 1 is a schematic diagram of PDSCH transmission within MCOT in an eLAA scenario;

fig. 2 is a schematic diagram of PDSCH and corresponding HARQ-ACK feedback in the same MCOT in an NR-U scenario;

fig. 3 is a schematic diagram of PDSCH and corresponding HARQ-ACK feedback in different MCOTs in an NR-U scenario;

FIG. 4 is a schematic diagram of a network architecture according to an embodiment of the present application

Fig. 5A is a schematic flow chart illustrating an implementation of a method for determining a HARQ feedback timing sequence according to an embodiment of the present application;

FIG. 5B is a schematic diagram of embodiment two of the present application;

FIG. 5C is a schematic view of embodiment three of the present application;

fig. 6A is a schematic structural diagram illustrating a structure of an apparatus for determining a HARQ feedback timing according to an embodiment of the present application;

fig. 6B is a schematic structural diagram illustrating a structure of an apparatus for determining a HARQ feedback timing according to an embodiment of the present application;

fig. 7 is a hardware entity diagram of an apparatus for determining HARQ feedback timing according to an embodiment of the present application.

Detailed Description

In Enhanced Licensed Assisted Access (eLAA), PUCCH can only transmit in Licensed (Licensed) frequency bands. The transmission of the Physical Downlink Shared Channel (PDSCH) can only be within the MCOT (see fig. 1), and the MCOT window length has different values according to different channel access priorities (table 1).

Generally D denotes downlink, U denotes uplink; in fig. 1, D denotes PDSCH and U denotes PUCCH. When the terminal receives the information carried on the PDSCH, HARQ-ACK needs to be fed back, and the HARQ-ACK is carried on a PUCCH. The MCOT window is 10 milliseconds (ms) long, and as can be seen from fig. 1, the PDSCH transmission can only be within the MCOT. In Table 1The first column indicates the channel access priority p, CW_min,pDenotes the minimum window length, CW, at the current priority p_max,pRepresenting the maximum window length of the MCOT window at the current priority p. For example, when the current priority p is 1, the minimum window length of the MCOT window is 3, and the maximum window length of the MCOT window is 7.

TABLE 1 MCOT window lengths corresponding to different channel access priorities

In an NR-U-based system, a PUCCH supports transmission in an unlicensed frequency band, and needs to comply with a Listen and avoid (LBT) transmission mechanism, so that the PUCCH can be transmitted only after successful channel preemption. LBT is a channel access mechanism, which enables wireless local area networks to effectively share the same spectrum resources. Because the availability of the Channel in the unlicensed frequency band cannot be guaranteed at any time, LBT requires that the Channel be monitored before data transmission, Clear Channel Assessment (CCA) is performed, and data transmission is performed again when the Channel is guaranteed to be idle.

The Third Generation Partnership Project (3 GPP) employs a random backoff LBT for a non-fixed length contention window, i.e., after detecting that a channel is occupied or a maximum transmission time is reached, a transmitting end enters the contention window, and the length of the contention window may be changed.

In an NR system based on an unlicensed band, there are two cases for hybrid automatic Repeat request-ACK (HARQ-ACK) feedback of a PDSCH:

in the first case, the PDSCH and the corresponding HARQ-ACK feedback are in the same MCOT. Referring to fig. 2, an MCOT is shown in fig. 2, where D denotes a PDSCH (e.g., D1, D2, D3, D4, etc.), and U denotes HARQ-ACK corresponding to the PDSCH (e.g., U1, U2, etc.). In fig. 2, HARQ-ACKs corresponding to D1 and D2 are U1, and D1, D2 and U1 are in the same MCOT; HARQ-ACK corresponding to D3 and D4 is U2, and D3, D4 and U5 are also in the same MCOT. In the example shown in fig. 2, two D correspond to one U, and in other embodiments, M D correspond to N U, where M and N are integers.

In the second case, the PDSCH and the corresponding HARQ-ACK feedback are in different MCOTs; referring to fig. 3, two MCOTs are shown in fig. 3, where D denotes a PDSCH (e.g., D1, D2, D3, D4, D5, D6, etc.), and U denotes HARQ-ACK corresponding to the PDSCH (e.g., U1, U2, U3, etc.). Two MCOTs, MCOT1 and MCOT2, are shown in fig. 3, where HARQ-ACK for D1 and D2 is U1, and D1, D2 and U1 are in the same MCOT; HARQ-ACK corresponding to D3 is U2, and D3 and U2 are not in the same MCOT; the HARQ-ACK corresponding to D4 is U3, and D4 and U3 are not in the same MCOT. In the example shown in fig. 3, two D correspond to one U, and there is a case where one D corresponds to one U, so in other embodiments, M D may correspond to N U, where M and N are integers.

For the first case, the maximum value of the timing relationship between PDSCH and HARQ (PDSCH-to-HARQ feedback) may be smaller than the length (ms) of MCOT; for the second case, the PDSCH-to-HARQ feedback timing takes a larger value.

In NR, K1 denotes the PDSCH to PUCCH timing relationship (timing), or is understood to be the timing relationship between HARQ-ACK to the corresponding PDSCH, where the value set of K1:

if the UE is configured to monitor a Physical Downlink Control Channel (PDCCH) of DCI format 1_0, the UE will not be configured to monitor the PDCCH of DCI format 1_1 on the serving cell c, and the value set of K1 is the timing value {1,2,3,4,5,6,7,8} of DCI format 1_ 0;

if the UE is configured to monitor only DCI format 1_0, K1 is set to {1,2,3,4,5,6,7,8 }; if the UE is configured to monitor the DCI format 1_1, taking the value of K1 as a set of higher-layer parameter dl-DataToUL-ACK configuration;

if the UE is configured with the higher layer parameter DL-DataToUL-ACK, the UE will no longer be marked as DCI format 1_0, the slot timing values for transmission of HARQ-ACK information will no longer belong to the intersection of the set of slot timing values {1,2,3,4,5,6,7,8} and the set of slot timing values for the active DL BWP for one corresponding serving cell provided by the higher layer parameter DL-DataToUL-ACK;

if the UE is configured to monitor the DCI format 1_1, and the UE needs to monitor the DCI format 1_0(CSS), the value of K1 of the DCI format 1_0 is an intersection of {1,2,3,4,5,6,7,8} and a configuration set of a higher-layer parameter dl-DataToUL-ACK.

In NR, in Frequency band (Frequency range 1, FR1), the subcarrier spacing supported by PUCCH is 15KHz, 30KHz, and 60 KHz. If the subcarrier spacing is 15KHz, one slot is 1ms, and if the subcarrier spacing is 30KHz, one slot is 0.5 ms; if the subcarrier spacing is 60KHz, one slot is 0.25 ms. For larger subcarrier spacings, such as 60KHz, even if K1 takes a maximum value of 8 (as can be seen from the set of values of K1, K1 takes a maximum value of 8), then the indicated timing relationship is at most 2ms to 0.25ms 8, while as can be seen from table 1, the window length of the MCOT is at least 3ms, i.e., even if K1 takes a maximum value of 8, then the indicated timing relationship is much smaller than the MCOT window length. That is, in the HARQ-ACK feedback of NR-U, there is a problem that the number of bits of the indication (PDSCH-to-HARQ _ feedback timing indicator) for characterizing the timing relationship between the PDSCH and the HARQ is not sufficient. In order to solve the above problem, the embodiment of the present application designs a scheme for effectively indicating PDSCH-to-HARQ _ feedback timing.

The technical solution of the present application is further elaborated below with reference to the drawings and the embodiments.

In this embodiment, a network architecture is provided first, and fig. 4 is a schematic view of a composition structure of the network architecture in the embodiment of the present application, as shown in fig. 4, the network architecture includes two or more terminals 11 to 1N and a network side device 31, where the terminals 11 to 1N and the network side device 31 interact with each other through a network 21. The terminal may be implemented as various types of devices having information processing capabilities, such as a cellular phone, a digital phone, a video phone, a sensing device, and the like.

The embodiment provides a method for determining a HARQ feedback timing, which is applied to a terminal, where functions implemented by the method may be implemented by a processor in the terminal calling a program code, and of course, the program code may be stored in a computer storage medium, and it is apparent that the terminal at least includes the processor and the storage medium.

Fig. 5A is a schematic flow chart illustrating an implementation process of a method for determining a HARQ feedback timing sequence according to an embodiment of the present application, as shown in fig. 5A, the method includes:

step S501, a terminal receives a PDSCH issued by network side equipment;

step S502, after the terminal successfully listens before sends LBT, the terminal feeds back the confirmation character corresponding to the PDSCH according to the indication of the downlink control information corresponding to the PDSCH;

It should be noted that the PDSCH-to-HARQ _ feedback timing indicator and K1 in this embodiment can be understood as having similar meanings, and in the standard, this is K1, which indicates the offset value from the acknowledgment character corresponding to the PDSCH; in the embodiment of the present application, the PDSCH-to-HARQ _ feedback timing indicator and K1 refer to an offset value from an acknowledgment character corresponding to the PDSCH to a reference slot.

In other embodiments, the reference time slot is one of: a time slot in which the PDSCH is located; a certain flexible time slot; and (4) uplink initial time slot.

In other embodiments, the PDCCH is located in a semi-static cell-specific Radio Resource Control (RRC) signaling/terminal Equipment (UE) -specific RRC signaling, or the PDCCH is located in a downlink timeslot indicated by a dynamic SFI.

In other embodiments, the method further comprises: before the terminal performs LBT, receiving a PDCCH issued by network side equipment, wherein the PDCCH is used for indicating the position of the certain flexible time slot or the position of the uplink starting time slot; wherein the position of the flexible time slot or the position of the uplink starting time slot is represented by an offset value between the flexible time slot and the time slot in which the PDCCH is located. Wherein, the PDCCH is further configured to indicate a duration of the flexible timeslot or the uplink starting timeslot.

In other embodiments, the flexible time slot or the uplink start time slot is located within the local MCOT or across the MCOT. And the flexible time slot or the uplink starting time slot is positioned in the local MCOT or is indicated by 1 bit added in DCI across the MCOT.

The embodiment provides a method for determining a HARQ feedback timing sequence, which includes:

step 11, the network side equipment sends a high-level configuration signaling to the terminal, wherein the high-level configuration signaling is used for indicating the position of a confirmation character corresponding to the feedback PDSCH;

wherein the high layer configuration signaling is used for indicating that acknowledgement characters corresponding to the partial PDSCH are fed back in the MCOT. In the implementation, the higher layer configuration signaling includes RRC signaling.

And step 12, after the terminal successfully listens before sends the LBT, feeding back the confirmation characters corresponding to the partial PDSCH in the MCOT according to the high-level configuration signaling.

In other embodiments, the higher layer configuration signaling is used to indicate that acknowledgement characters of a partial PDSCH are fed back on odd uplink timeslots in the MCOT, and acknowledgement characters of other PDSCHs are fed back on even uplink timeslots in the MCOT.

In other embodiments, the feeding back the acknowledgment character corresponding to the partial PDSCH in the MCOT according to the higher layer configuration signaling includes: and according to the high-level configuration signaling, feeding back the confirmation characters of partial PDSCH on the odd uplink time slot in the MCOT, and feeding back the confirmation characters of other PDSCHs on the even uplink time slot in the MCOT.

step 21, the network side device uses the downlink control information indication corresponding to the PDSCH for feeding back the position of the acknowledgment character corresponding to the PDSCH;

Step 22, before the terminal performs LBT, receiving a PDCCH issued by a network side device, where the PDCCH is used to indicate a position of the certain flexible time slot or a position of the uplink starting time slot;

and step 23, after the terminal successfully listens before sends the LBT, feeding back the confirmation character corresponding to the PDSCH according to the indication of the downlink control information corresponding to the PDSCH.

In other embodiments, the method further comprises: and the network side equipment sends a downlink control channel (PDCCH) to the terminal, wherein the PDCCH is used for indicating the position of the certain flexible time slot or the position of the uplink initial time slot. The PDCCH is located in semi-static cell-specific RRC signaling/UE-specific RRC signaling, or the PDCCH is located in a downlink time slot indicated by a dynamic SFI.

In other embodiments, the position of the flexible timeslot or the position of the uplink starting timeslot is represented by an offset value between itself and a timeslot in which the PDCCH is located. Wherein, the PDCCH is further configured to indicate a duration of the flexible timeslot or the uplink starting timeslot.

In this embodiment, the problem of insufficient bit number of the PDSCH-to-HARQ _ feedback timing indicator in the related art is solved by increasing the bit number of the PDSCH-to-HARQ _ feedback timing indicator or by not increasing the bit number of the PDSCH-to-HARQ _ feedback timing indicator, changing the definition of the PDSCH-to-HARQ _ feedback timing indicator field, or limiting the flexibility of HARQ-ACK feedback.

The technical solution of the embodiment of the present application is described below:

scheme (I):

the most straightforward way is to increase the number of bits of PDSCH-to-HARQ feedback timing indicator, which would have passed (earlier) #94 times in Radio Access Network working group 1 (RAN 1).

Scheme (II):

the PDSCH-to-HARQ _ feedback timing indicator field in the downlink grant (DL grant) indicates an offset value from HARQ-ACK to one reference slot (reference slot).

(1) The reference slot may be a time slot in which the PDSCH is located or a flexible time slot (flexislslot) or an uplink starting time slot.

Fig. 5B shows an MCOT, where D denotes a PDSCH (e.g., D1, D2, D3, D4, etc.), and U denotes a HARQ-ACK corresponding to the PDSCH (e.g., U1, U2, etc.). In FIG. 5B, the HARQ-ACK corresponding to D1 is U1; the HARQ-ACK corresponding to D2 is U2.

Before the terminal performs LBT, the terminal receives a PDCCH issued by the network side device, where the position indicated by the PDCCH is the position of an uplink starting time slot U1 (as a reference time slot), the offset between the position of U1 and the position of the PDCCH is 2 time slots, and the number of uplink time slots is also 2.

For D1, the PDSCH-to-HARQ _ feedback timing indicator field in the downlink grant (DL grant) indicates that its HARQ-ACK to U1 offset value is 0; for D2, the PDSCH-to-HARQ _ feedback timing indicator field in the downlink grant (DL grant) indicates that its HARQ-ACK to U1 offset value is 1, and for simplicity, the value indicated by the PDSCH-to-HARQ _ feedback timing indicator field is still denoted by K1.

In the example shown in fig. 5B, the offset between the position of the uplink start slot and the position of the PDCCH is 2, and the number of uplink slots is also 2. In other embodiments, the offset from the starting position of the flexible slot to the PDCCH may be L and/or the number of flexible slots is I, where L and I are integers.

(2) The position of a certain flexible slot or an uplink start slot may be indicated by a PDCCH, and the PDCCH may exist in a semi-static cell-specific RRC signaling (cell-specific RRC signaling)/UE-specific RRC signaling (UE-specific RRC signaling), or a downlink slot indicated by a dynamic SFI.

(3) The position of a certain flexible slot or uplink starting slot is represented by its offset value from the PDCCH, and the PDCCH may also indicate the duration (duration) of the flexible slot or uplink starting slot.

(4) A certain flexible slot or uplink start slot may be located in the MCOT, or may span the MCOT. Specifically, the indication of 1 bit can be added to the DL grant, or the terminal and the base station can agree on a rule, that is, if the PDSCH-to-HARQ-timing satisfies the processing capability of the terminal, the MCOT is present; if not, the MCOT is crossed.

Referring to fig. 5B, an MCOT is shown in fig. 5B, wherein D denotes a PDSCH (e.g., D1, D2, D3, D4, etc.), and U denotes HARQ-ACK corresponding to the PDSCH (e.g., U1, U2, etc.). In fig. 5B, the DCI indicates a PDSCH-to-HARQ _ feedback timing indicator, which is different from that of the related art, i.e., an offset value from HARQ-ACK to a reference slot (reference slot), and the related art indicates a timing relationship between HARQ-ACK and a corresponding PDSCH (which may be indicated by a slot number therebetween). In this example, the HARQ-ACK corresponding to D1 is U1, the HARQ-ACK corresponding to D2 is U2, and D1 and U1 are in the same MCOT; d2 and U2 were also in the same MCOT.

If expressed in the meaning of the related art, i.e., K1 denotes the number of slots between D1 and U1, K1 denotes the number of slots between D2 and U2, assuming that the number of slots between D1 and U1 is 5, then K1 is 5 for D1 and U1; since the number of slots between D2 and U2 is 5, K1 equals 5 for D2 and U2.

If the meaning in the present embodiment is adopted to indicate, for D1 and U1, K1 indicates the timing relationship between U1 and U1 (the position of the uplink start slot), and the timing relationship can be indicated by the number of slots, so K1 is 0; for D2 and U2, K1 indicates the timing relationship between U2 and U1 (the position of the uplink start slot), so K1 is 1.

Scheme (III):

and limiting the flexibility of HARQ-ACK feedback, and configuring signaling by a high layer to enable part of PDSCHs to feed back in odd uplink time slots and other PDSCHs to feed back in even uplink time slots, thereby reducing the bit number indicated by the PDSCH-to-HARQ _ feedback timing indicator.

Referring to fig. 5C, an MCOT is shown in fig. 5C, wherein D denotes a PDSCH (e.g., D1, D2, D3, D4, etc.), and U denotes HARQ-ACK corresponding to the PDSCH (e.g., U1, U2, U3, U4, etc.).

Before LBT is carried out by a terminal, a high-level configuration signaling sent by network side equipment is received, wherein the high-level configuration signaling is used for indicating that part of PDSCHs are fed back in odd-numbered uplink time slots and other PDSCHs are fed back in even-numbered uplink time slots. Wherein, U1 and U3 are odd numbers, U2 and U4 are even numbers, D1 and D3 feed back in odd numbers, and D2 and D4 feed back in even numbers.

Since the uplink slots are grouped, for example, into two or more groups, K1 in fig. 5C has a slightly different meaning from K1 in the foregoing embodiment. Taking two sets as an example, i.e., odd-numbered set uplink timeslots and even-numbered set uplink timeslots, K1 in fig. 5C may indicate the offset value between the positions of HARQ-ACKs to the uplink starting timeslot in different timeslot sets (odd-numbered and even-numbered).

For the odd-numbered group, the position of the uplink starting timeslot is U1, and the offset value from the HARQ-ACK corresponding to D1 to the uplink starting position (U1) is 0, so for D1, K1 is 0; the offset value from the HARQ-ACK corresponding to D3 to the uplink start position (U1) is 1, so for D3, K1 is 1.

For even-numbered groups, the position of the uplink starting timeslot is U2, and the offset value from the HARQ-ACK corresponding to D2 to the uplink starting position (U2) is 0, so for D2, K1 is 0; since the offset value from the HARQ-ACK corresponding to D4 to the uplink start position (U2) is 0, K1 is 1 for D4.

In this example, there may also be a relatively simple expression: that is, all the uplink timeslots are divided into two groups, 0-X indicates odd numbered timeslot groups including U1 and U3, and the location of the uplink starting timeslot is U1. Where 0-0 indicates that the offset of the distance U1 is 0; 0-1 indicates that the offset of the distance U1 is 1, i.e., U3. 1-X denote even numbered slot groups including U2, U4, and the position of the upstream starting slot is U2. Where 1-0 indicates that the offset from U2 is 0 and 1-1 indicates that the offset from U1 is 1, i.e., U4.

In the embodiment of the application, the definition of the PDSCH-to-HARQ _ feedback timing indicator field is changed or the flexibility of HARQ-ACK feedback is limited by increasing the bit number of the PDSCH-to-HARQ _ feedback timing indicator or not increasing the bit number of the PDSCH-to-HARQ _ feedback timing indicator, so that the problem that the bit number of the PDSCH-to-HARQ _ feedback timing indicator in the related art is insufficient is solved.

Based on the foregoing embodiments, an apparatus for determining a HARQ feedback timing sequence is provided in the embodiments of the present application, where each unit included in the apparatus and each module included in each unit may be implemented by a processor in a device for determining a HARQ feedback timing sequence; of course, the implementation can also be realized through a specific logic circuit; in implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.

Fig. 6A is a schematic structural diagram of an apparatus for determining a HARQ feedback timing according to an embodiment of the present application, and as shown in fig. 6A, the apparatus includes a first apparatus 600 and a second apparatus 610, where the first apparatus 600 includes a first receiving unit 601 and a first feedback unit 602, and the second apparatus 610 includes a first determining unit 611 and an indicating unit 612, where:

a first determining unit 611, configured to determine an offset value from a confirmation character corresponding to the PDSCH to a reference time slot;

an indicating unit 612, configured to utilize downlink control information indication corresponding to the PDSCH, and to feed back a position of an acknowledgment character corresponding to the PDSCH;

A first receiving unit 601, configured to receive a PDSCH transmitted by a network side device;

a first feedback unit 602, configured to feed back the acknowledgment character corresponding to the PDSCH according to the indication of the downlink control information corresponding to the PDSCH after performing listen before send LBT.

In other embodiments of the first apparatus, the reference time slot is one of: a time slot in which the PDSCH is located; a certain flexible time slot; and (4) uplink initial time slot.

In other embodiments, the first apparatus further comprises:

a second receiving unit, configured to receive, before performing LBT, a PDCCH issued by a network side device, where the PDCCH is used to indicate a position of the certain flexible time slot or a position of the uplink starting time slot.

In other embodiments of the first apparatus, the PDCCH is located in semi-static cell-specific RRC signaling/UE-specific RRC signaling, or the PDCCH is located in a downlink slot indicated by a dynamic SFI.

Wherein the position of the flexible time slot or the position of the uplink starting time slot is represented by an offset value between the flexible time slot and the time slot in which the PDCCH is located. The PDCCH is further configured to indicate a duration of the flexible timeslot or the uplink start timeslot.

In other embodiments of the first apparatus, the flexible timeslot or the uplink start timeslot is located within the local MCOT or across the MCOT. And the flexible time slot or the uplink starting time slot is positioned in the local MCOT or is indicated by 1 bit added in DCI across the MCOT.

In other embodiments of the second apparatus, the reference time slot is one of: a time slot in which the PDSCH is located; a certain flexible time slot; and (4) uplink initial time slot.

In other embodiments of the second apparatus, the second apparatus further comprises:

and the issuing unit is used for sending an issued PDCCH to the terminal, and the PDCCH is used for indicating the position of the certain flexible time slot or the position of the uplink initial time slot.

In other embodiments of the second apparatus, the PDCCH is located in semi-static cell-specific RRC signaling/UE-specific RRC signaling, or the PDCCH is located in a downlink slot indicated by a dynamic SFI.

In another embodiment of the second apparatus, a position of the certain flexible timeslot or a position of the uplink starting timeslot is represented by an offset value between itself and a timeslot in which the PDCCH is located. Wherein, the PDCCH is further configured to indicate a duration of the flexible timeslot or the uplink starting timeslot.

In other embodiments of the second apparatus, the flexible timeslot or the uplink start timeslot is located within the local MCOT or across the MCOT. And the flexible time slot or the uplink starting time slot is positioned in the local MCOT or is indicated by 1 bit added in DCI across the MCOT.

Fig. 6B is a schematic diagram of a structure of an apparatus for determining a HARQ feedback timing sequence according to an embodiment of the present application, and as shown in fig. 6B, the apparatus includes a first apparatus 620 and a second apparatus 630, where the first apparatus 620 includes a third receiving unit 621 and a second feedback unit 622, and the second apparatus 630 includes a second determining unit 631 and a sending unit 632, where:

a second determining unit 631 configured to determine a position for feeding back a confirmation character corresponding to the PDSCH;

a sending unit 632, configured to send a high-level configuration signaling to the terminal, where the high-level configuration signaling is used to indicate a position of a confirmation character corresponding to the PDSCH being fed back;

A third receiving unit 621, configured to receive a high-level configuration signaling sent by a network side device;

a second feedback unit 622, configured to feed back, in the MCOT, the acknowledgment character corresponding to the partial PDSCH according to the high-level configuration signaling after performing listen before send LBT is successful.

In other embodiments, the second feedback unit is configured to feed back acknowledgement characters of a partial PDSCH on odd uplink timeslots in the MCOT and acknowledgement characters of other PDSCHs on even uplink timeslots in the MCOT according to the high layer configuration signaling.

The above description of the apparatus embodiments, similar to the above description of the method embodiments, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

It should be noted that, in the embodiment of the present application, if the method for determining the HARQ feedback timing is implemented in the form of a software functional module and sold or used as a standalone product, the method may also be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions to enable an apparatus for determining HARQ feedback timing to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.

Correspondingly, an embodiment of the present application provides an apparatus for determining a HARQ feedback timing, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the steps in the above method when executing the program.

Correspondingly, the embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and the computer program realizes the steps of the above method when being executed by a processor.

Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

It should be noted that fig. 7 is a schematic diagram of a hardware entity of an apparatus for determining a HARQ feedback timing in an embodiment of the present application, as shown in fig. 7, the hardware entity of the apparatus 700 includes: a processor 701, a communication interface 702, and a memory 703, wherein

The processor 701 generally controls the overall operation of the device 700.

The communication interface 702 may enable the device to communicate with other terminals or servers over a network.

The Memory 703 is configured to store instructions and applications executable by the processor 701, and may also cache data to be processed or already processed by the processor 701 and modules in the device 700, and may be implemented by a FLASH Memory (FLASH) or a Random Access Memory (RAM).

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

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.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.

Alternatively, the integrated units described above in the present application may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a device to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

The above description is only for the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of determining hybrid automatic repeat request, HARQ, feedback timing, the method comprising:

after the terminal successfully performs listen-before-send monitoring avoidance mechanism LBT, feeding back confirmation characters corresponding to a Physical Downlink Shared Channel (PDSCH) according to an indication of downlink control information corresponding to the PDSCH;

the downlink control information includes an indication PDSCH-to-HARQ _ feedback timing indicator of a timing sequence between a physical downlink shared channel and a hybrid automatic repeat request, where the PDSCH-to-HARQ _ feedback timing indicator indicates an offset value from an acknowledgment character corresponding to the PDSCH to a reference slot.

2. The method of claim 1, wherein the reference time slot is one of:

a time slot in which the PDSCH is located;

a certain flexible time slot;

and (4) uplink initial time slot.

3. The method of claim 2, further comprising:

before the terminal performs the LBT, a physical downlink control channel PDCCH issued by a network side device is received, where the PDCCH is used to indicate a position of the certain flexible time slot or a position of the uplink starting time slot.

4. The method of claim 3, wherein the PDCCH is located in semi-static cell-specific Radio Resource Control (RRC) signaling/terminal User Equipment (UE) -specific RRC signaling, or wherein the PDCCH is located in a downlink time slot indicated by a dynamic SFI.

5. The method of claim 3, wherein the position of the flexible timeslot or the position of the uplink starting timeslot is indicated by an offset value between itself and a timeslot in which the PDCCH is located.

6. The method of claim 5, wherein the PDCCH is further configured to indicate a duration of the flexible time slot or the uplink starting time slot.

7. The method of claim 2, wherein the flexible timeslot or uplink start timeslot is within or across the local Maximum Channel Occupancy Time (MCOT).

8. The method of claim 7, wherein the flexible time slot or uplink starting time slot is located within a local MCOT or indicated across MCOT by 1 bit added in DCI.

9. A method of determining HARQ feedback timing, the method comprising:

10. The method of claim 9, wherein the feeding back the acknowledgement character corresponding to the partial PDSCH in the MCOT according to the higher layer configuration signaling comprises:

and according to the high-level configuration signaling, feeding back the confirmation characters of partial PDSCH on the odd uplink time slot in the MCOT, and feeding back the confirmation characters of other PDSCHs on the even uplink time slot in the MCOT.

11. A method of determining HARQ feedback timing, the method comprising:

12. The method of claim 11, wherein the reference time slot is one of:

a time slot in which the PDSCH is located;

a certain flexible time slot;

and (4) uplink initial time slot.

13. The method of claim 12, further comprising:

and the network side equipment sends a downlink control channel (PDCCH) to the terminal, wherein the PDCCH is used for indicating the position of the certain flexible time slot or the position of the uplink initial time slot.

14. The method of claim 13, wherein the PDCCH is located in a semi-static cell-specific RRC signaling/UE-specific RRC signaling or in a downlink slot indicated by a dynamic SFI.

15. The method of claim 13, wherein a position of the flexible timeslot or a position of the uplink start timeslot is indicated by an offset value between itself and a timeslot in which the PDCCH is located.

16. The method of claim 15, wherein the PDCCH is further configured to indicate a duration of the flexible time slot or the uplink start time slot.

17. The method of claim 12, wherein the flexible time slot or uplink start time slot is located within a local MCOT or across MCOTs.

18. The method of claim 17, wherein the flexible time slot or uplink starting time slot is located within a local MCOT or indicated across MCOTs by 1 bit added in DCI.

19. A method of determining HARQ feedback timing, the method comprising:

20. The method of claim 19, wherein the higher layer configuration signaling is used to indicate that acknowledgement characters of a partial PDSCH are fed back on odd numbered uplink slots in the MCOT and acknowledgement characters of other PDSCHs are fed back on even numbered uplink slots in the MCOT.

21. An apparatus for determining HARQ feedback timing, the apparatus comprising:

22. An apparatus for determining HARQ feedback timing, the apparatus comprising:

23. An apparatus for determining HARQ feedback timing, the apparatus comprising:

24. An apparatus for determining HARQ feedback timing, the apparatus comprising:

25. An apparatus for determining HARQ feedback timing, comprising a memory and a processor, the memory storing a computer program operable on the processor, wherein the processor when executing the program performs the steps in the method of any one of claims 1 to 8, or 9 or 10, or wherein the processor when executing the program performs the steps in the method of any one of claims 11 to 18, or 19 or 20.

26. 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 method of any one of claims 1 to 8, or 9 or 10, or carries out the steps of the method of any one of claims 11 to 18, or 19 or 20.