CN111262670B

CN111262670B - Hybrid automatic repeat acknowledgement feedback information transmission method and terminal equipment

Info

Publication number: CN111262670B
Application number: CN201910028854.3A
Authority: CN
Inventors: 李娜; 潘学明; 姜蕾
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2023-02-03
Anticipated expiration: 2039-01-11
Also published as: CN111262670A

Abstract

The embodiment of the invention provides a method for transmitting HARQ-ACK feedback information and terminal equipment, relates to the technical field of communication, and is used for solving the problem that in a communication system operating in an unauthorized frequency band, an uplink channel is possibly detected to be in an occupied state in a specified time period, so that the uplink channel cannot be transmitted. The method comprises the following steps: receiving first indication information; when the first indication information indicates that the first HARQ-ACK feedback information is sent in a first time unit and an uplink channel is in an occupied state in the first time unit, or the first indication information indicates that the first HARQ-ACK feedback information is sent in a pending time unit and the first HARQ-ACK feedback information is not sent, the first HARQ-ACK feedback information is sent in a second time unit; the second time unit is located after the first time unit and has corresponding uplink transmission resources, and the uplink channel is in an idle state in the second time unit.

Description

Hybrid automatic repeat acknowledgement feedback information transmission method and terminal equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a terminal device for transmitting harq feedback information.

Background

In the fifth generation (5G) communication system, the terminal device needs to perform Hybrid Automatic Repeat reQuest (HARQ-ACK) feedback on a Physical Downlink Shared Channel (PDSCH) sent by the network side device or a Physical Downlink Control Channel (PDCCH) releasing a Semi-Persistent Scheduling PDSCH (SPS PDSCH).

In general, a terminal device receives a PDSCH in a time slot n, and then feeds back HARQ-ACK feedback information in the time slot n1+ k1, where a value of k1 is indicated by a PDSCH-to-HARQ-timing-indicator field in DCI. Meanwhile, the network side equipment receives HARQ-ACK feedback information sent by the terminal equipment in a corresponding time domain, and if the network side equipment does not receive the HARQ-ACK feedback information sent by the terminal equipment in the corresponding time domain, the terminal equipment is considered not to receive the PDDCH for scheduling the PDSCH sent by the terminal equipment, and then the PDSCH is triggered to be retransmitted. However, when the communication system operates in the unlicensed frequency band, before transmitting the uplink information, the terminal device needs to implement a Listen Before Talk (LBT) manner to evaluate a Clear Channel (CCA)/extended Channel Clear assessment (eCCA), and only when it is determined that the uplink Channel is idle, the uplink information can be transmitted, but since the unlicensed frequency band is shared by multiple technologies or multiple transmission nodes, the contention-based access manner causes uncertainty that the uplink Channel is idle, the uplink Channel may not be available at a time specified by the network-side device, and the terminal device cannot transmit corresponding HARQ-ACK feedback information, thereby causing the network-side device to retransmit PDSCH, and affecting the downlink throughput of the communication system.

Disclosure of Invention

The embodiment of the invention provides a method for transmitting HARQ-ACK feedback information and terminal equipment, which are used for solving the problem that the terminal equipment can not transmit the HARQ-ACK feedback information because the terminal equipment detects that an uplink channel is in an occupied state in a specified time interval in a communication system operating in an unauthorized frequency band.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a method for transmitting HARQ-ACK feedback information, which is applied to a terminal device, and the method includes:

receiving first indication information from a network side device, wherein the first indication information indicates that the terminal device sends first HARQ-ACK feedback information in a first time unit, or the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit;

when the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a first time unit and detects that an uplink channel is in an occupied state in the first time unit, or the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a pending time unit and the first HARQ-ACK feedback information is not sent, sending the first HARQ-ACK feedback information in a second time unit;

wherein the second time unit is located after the first time unit, the second time unit has corresponding uplink transmission resources, and the uplink channel is in an idle state in the second time unit.

In a second aspect, an embodiment of the present invention provides a method for transmitting HARQ-ACK feedback information, which is applied to a terminal device, and the method includes:

receiving at least two pieces of indication information from network side equipment; each piece of the at least two pieces of indication information indicates that the terminal equipment sends HARQ-ACK feedback information in a target time unit, each piece of the at least two pieces of indication information indicates a channel access mode, and the channel access modes indicated by the at least two pieces of indication information include at least two types;

adopting the channel access mode with the highest priority in the at least two channel access modes to carry out channel access;

or;

and performing channel access by adopting the channel access mode which indicates the time at the last in the at least two channel access modes.

In a third aspect, an embodiment of the present invention provides a terminal device, including:

a receiving unit, configured to receive first indication information from a network side device, where the first indication information indicates that the terminal device sends first HARQ-ACK feedback information in a first time unit, or the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit;

a sending unit, configured to send the first HARQ-ACK feedback information in a second time unit when the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in a first time unit and detects that an uplink channel is in an occupied state in the first time unit, or when the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit and the first HARQ-ACK feedback information is not sent;

In a fourth aspect, an embodiment of the present invention provides a terminal device, including:

a receiving unit, configured to receive at least two pieces of indication information from a network-side device; each piece of the at least two pieces of indication information indicates that the terminal equipment sends HARQ-ACK feedback information in a target time unit, each piece of the at least two pieces of indication information indicates a channel access mode, and the channel access modes indicated by the at least two pieces of indication information include at least two types;

and the detection unit is used for performing channel access by adopting a channel access mode with the highest priority in the at least two channel access modes, or performing channel access by adopting a channel access mode indicating that the time is at the last in the at least two channel access modes.

In a fifth aspect, an embodiment of the present invention provides a terminal device, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the HARQ-ACK feedback information transmission method of the first or second aspect.

In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the HARQ-ACK feedback information transmission method according to the first aspect.

The method for transmitting the HARQ-ACK feedback information comprises the steps that first indication information is received from network side equipment, wherein the first indication information indicates the terminal equipment to send the first HARQ-ACK feedback information in a first time unit, or the first indication information indicates the terminal equipment to send the first HARQ-ACK feedback information in an undetermined time unit; when the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a first time unit and detects that an uplink channel is in an occupied state in the first time unit, or the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a pending time unit and the first HARQ-ACK feedback information is not sent, sending the first HARQ-ACK feedback information in a second time unit; wherein the second time unit is located after the first time unit, the second time unit has corresponding uplink transmission resources, and the uplink channel is in an idle state in the second time unit. That is, in the embodiment of the present invention, the first HARQ-ACK feedback information may be pushed back to a second time unit after the first time unit to be sent when the uplink channel indicates that the first time unit for sending the first HARQ-ACK feedback information is in an occupied state in the first indication information, or the first HARQ-ACK feedback information may be sent in the second time unit when the first indication information does not indicate the time unit for explicitly sending the first HARQ-ACK feedback information and the first HARQ-ACK feedback information is not sent. According to the embodiment of the invention, under the condition that the uplink channel indicates that the first time unit for sending the first HARQ-ACK feedback information is in the occupied state in the first indication information, the first HARQ-ACK feedback information is pushed back to the second time unit after the first time unit for sending, so that the problem that the terminal equipment cannot send the HARQ-ACK feedback information due to the fact that the uplink channel is detected to be in the occupied state in the specified time period in a communication system running in an unauthorized frequency band can be solved, and the downlink throughput of the communication system is prevented from being influenced.

Drawings

Fig. 1 is an architecture diagram of a multi-TRP communication system according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a step of a method for transmitting HARQ-ACK feedback information according to an embodiment of the present invention;

fig. 3 is one of scene diagrams of a HARQ-ACK feedback information transmission method according to an embodiment of the present invention;

fig. 4 is a second scenario of a HARQ-ACK feedback information transmission method according to an embodiment of the present invention;

fig. 5 is a third scene schematic diagram of a HARQ-ACK feedback information transmission method according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a second step of a method for transmitting HARQ-ACK feedback information according to an embodiment of the present invention;

fig. 7 is a fourth scenario diagram illustrating a HARQ-ACK feedback information transmission method according to an embodiment of the present invention;

fig. 8 is a fifth scenario diagram illustrating a HARQ-ACK feedback information transmission method according to an embodiment of the present invention;

fig. 9 is a third flowchart illustrating a procedure of a method for transmitting HARQ-ACK feedback information according to an embodiment of the present invention;

fig. 10 is a sixth scenario diagram illustrating a HARQ-ACK feedback information transmission method according to an embodiment of the present invention;

fig. 11 is one of schematic structural diagrams of a terminal device according to an embodiment of the present invention;

fig. 12 is a second schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 13 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

The terms "first" and "second," and the like, in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first and second half presentation operations, etc. are for distinguishing different presentation operations, rather than for describing a particular order of presentation operations.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion. Further, in the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specified.

When a communication system operates in an unlicensed frequency band, before transmitting uplink information, a terminal device needs to implement Clear Channel Assessment (CCA)/extended Channel Clear assessment (eCCA) in a Listen Before Talk (LBT) manner, and only when it is determined that an uplink Channel is idle, the uplink information can be transmitted, but because the unlicensed frequency band is shared by multiple technologies or multiple transmission nodes, the contention-based access manner causes uncertainty that the uplink Channel is idle, and at a time specified by a network-side device, the uplink Channel may be unavailable, and the terminal device cannot transmit corresponding HARQ-feedback ACK information, thereby causing the network-side device to retransmit a PDSCH, and affecting downlink throughput of the communication system.

In order to solve the problem, embodiments of the present invention provide a method and a terminal device for transmitting HARQ-ACK feedback information. The HARQ-ACK feedback information transmission method comprises the steps that first indication information is received from network side equipment, wherein the first indication information indicates that the terminal equipment sends first HARQ-ACK feedback information in a first time unit, or the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in an undetermined time unit; when the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a first time unit and detects that an uplink channel is in an occupied state in the first time unit, or the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a pending time unit and the first HARQ-ACK feedback information is not sent, sending the first HARQ-ACK feedback information in a second time unit; wherein the second time unit is located after the first time unit, the second time unit has corresponding uplink transmission resources, and the uplink channel is in an idle state in the second time unit. That is, in the embodiment of the present invention, the first HARQ-ACK feedback information may be pushed to a second time unit after the first time unit to be sent when the uplink channel indicates that the first time unit for sending the first HARQ-ACK feedback information is in an occupied state in the first indication information, or the first HARQ-ACK feedback information may be sent in the second time unit when the first indication information does not indicate a time unit for explicitly sending the first HARQ-ACK feedback information and the first HARQ-ACK feedback information is not sent. According to the embodiment of the invention, under the condition that the uplink channel is in the occupied state in the first time unit which is indicated by the first indication information and used for sending the first HARQ-ACK feedback information, the first HARQ-ACK feedback information is pushed back to the second time unit which is behind the first time unit to be sent, so that the problem that the HARQ-ACK feedback information cannot be sent due to the fact that the terminal equipment detects that the uplink channel is in the occupied state in the specified time period in a communication system which runs in an unauthorized frequency band can be solved, and therefore the downlink throughput of the communication system is prevented from being influenced.

Fig. 1 shows a schematic diagram of a possible structure of a communication system according to an embodiment of the present invention. As shown in fig. 1, a communication system according to an embodiment of the present invention operates in an unlicensed frequency band, and includes: a terminal device 11 and a network side device 12. The terminal device 11 and the network-side device 12 may send information to each other, and the network-side device 12 needs to Listen Before Talk (LBT) to perform channel access before sending downlink information to the terminal device 11, so that the LBT can preempt the downlink channel when detecting that the downlink channel is in an idle state, and thus send the downlink information to the terminal device 11, and cannot send the downlink information to the terminal device 11 when detecting that the downlink channel is in an occupied state. Similarly, the terminal device 11 needs to perform LBT for channel access before sending the uplink information to the network-side device 12, and can preempt the uplink channel only when the LBT detects that the uplink channel is in the idle state, so as to send the uplink information to the network-side device 12, and cannot send the uplink information to the network-side device 12 when the LBT detects that the uplink channel is in the occupied state.

The terminal device in the communication system according to the embodiment of the present invention may be a wireless terminal device, and the wireless terminal device may be a device providing voice and/or other service data connectivity to a user, a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN network, or the like. Wireless Terminal devices, which may be Terminal devices such as Mobile phones (or "cellular" phones) and computers with Terminal devices, such as portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile devices, exchange languages and/or data with the Radio Access Network, and Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), etc., may also be Mobile devices, UE terminals, access terminals, wireless Communication devices, terminal units, terminal stations, mobile stations (Mobile stations), remote terminals (Remote stations), remote Terminal stations (Remote agents), subscriber stations (subscribers), etc. As an example, in the embodiment of the present invention, fig. 1 illustrates that the terminal is a mobile phone.

The Network side device may also be referred to as a Radio Access Network (RAN) device, and is a device for accessing a terminal to a wireless Network, and includes but is not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Base Station (e.g., home evolved Node B, or Home Node B, HNB), a BaseBand Unit (BBU), a Wireless Fidelity (WIFI) Access Point (AP), or transmission Point, TP), a Wireless Controller in a Cloud Radio Access Network (CRAN) scenario, a Base Station (gNB) in a 5G communication system, or a Network side device in a future evolved Network, etc.

Further, the LBT performed by the terminal device 11 or the network side device 12 may specifically be: the terminal device 11 or the network side device 12 performs a Clear Channel Assessment (CCA)/extended Channel assessment (eCCA) to listen to the Channel, that is, performs Energy Detection (ED), when the Energy is lower than a certain threshold, the Channel is determined to be in an idle state, and when the Energy is higher than the threshold, the Channel is determined to be in an occupied state.

The first embodiment,

The embodiment of the invention provides a HARQ-ACK feedback information transmission method, which applies terminal equipment. Specifically, referring to fig. 2, the HARQ-ACK feedback information transmission method includes:

step 201, the terminal device receives first indication information from the network side device.

Wherein the first indication information indicates the terminal device to send first HARQ-ACK feedback information in a first time unit.

Specifically, the time unit in the embodiment of the present invention may specifically be a slot (slot), a sub-slot (sub-slot), a half-slot (half-slot), a Mini-slot (Mini-slot), a symbol (symbols), and the like, which is not limited in the embodiment of the present invention.

Before the first time unit sends the first HARQ-ACK feedback information, the terminal device first needs to perform an LBT access channel, and if the LBT detects that the uplink channel is in an idle state, the first HARQ-ACK feedback information is sent in the first time unit, and if the LBT detects that the uplink channel is in an occupied state, the following step 202 is executed.

Step 202, the terminal device sends the first HARQ-ACK feedback information in the second time unit when detecting that the uplink channel is in the occupied state in the first time unit.

Wherein the second time unit is located after the first time unit, the second time unit has a corresponding uplink transmission resource, and the uplink channel is in an idle state in the second time unit.

That is, when the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in the first time unit, but the LBT detects that the uplink channel is in the occupied state in the first time unit, the LBT defers sending the first HARQ-ACK feedback information and feeds back the first HARQ-ACK feedback information on the subsequent uplink transmission resources.

The HARQ-ACK feedback information transmission method provided by the embodiment of the invention comprises the steps of firstly receiving first indication information from network side equipment, wherein the first indication information indicates the terminal equipment to send the first HARQ-ACK feedback information in a first time unit; under the condition that the uplink channel is detected to be in an occupied state in the first time unit, sending the first HARQ-ACK feedback information in a second time unit; wherein the second time unit is located after the first time unit, the second time unit has corresponding uplink transmission resources, and the uplink channel is in an idle state in the second time unit. That is, in the embodiment of the present invention, when the uplink channel indicates that the first time unit for sending the first HARQ-ACK feedback information is in the occupied state in the first indication information, the first HARQ-ACK feedback information may be pushed back to the second time unit after the first time unit for sending. According to the embodiment of the invention, under the condition that the uplink channel indicates that the first time unit for sending the first HARQ-ACK feedback information is in the occupied state in the first indication information, the first HARQ-ACK feedback information is pushed back to the second time unit after the first time unit for sending, so that the problem that the terminal equipment cannot send the HARQ-ACK feedback information due to the fact that the uplink channel is detected to be in the occupied state in the specified time period in a communication system running in an unauthorized frequency band can be solved, and the downlink throughput of the communication system is prevented from being influenced.

Optionally, the second time unit is a time unit corresponding to a first target uplink transmission resource after the first time unit;

the target uplink transmission resource is an uplink transmission resource of the uplink channel in an idle state in a corresponding time unit.

Specifically, in this embodiment of the present invention, the determining process of the second time unit may be: first uplink transmission resources after a first time unit are determined, then whether a time unit corresponding to the first uplink transmission resources of an uplink channel is in an occupied state is determined, if the time unit corresponding to the first uplink transmission resources of the uplink channel is in an idle state, the time unit corresponding to the first uplink transmission resources is determined as a second time unit, if the time unit corresponding to the first uplink transmission resources of the uplink channel is in a non-idle state, next uplink transmission resources after the first uplink transmission resources are determined, then whether the time unit corresponding to the next uplink transmission resources of the uplink channel is in an occupied state is determined, if the time unit corresponding to the uplink transmission resources of the uplink channel is in an idle state, the time unit corresponding to the uplink transmission resources of the uplink channel is determined as the second time unit, and if the time unit corresponding to the uplink transmission resources of the uplink channel is in an idle state, the process is continuously repeated until the second time unit is determined.

Or, first, determining a first uplink transmission resource after the first time unit, which meets a time requirement for multiplexing different HARQ-ACK feedback information by the UE, that is, the first uplink transmission resource needs to have a certain time interval with a time interval between the first time units (for example, a start/end symbol of the first time unit to a start symbol of the first uplink transmission resource), then determining whether a time unit corresponding to the first uplink transmission resource of the uplink channel is in an occupied state, if the time unit corresponding to the first uplink transmission resource of the uplink channel is in an idle state, determining a next uplink transmission resource after the first uplink transmission resource, then determining whether the time unit corresponding to the next uplink transmission resource of the uplink channel is in an occupied state, if the time unit corresponding to the first uplink transmission resource of the uplink channel is in a non-idle state, determining the time unit corresponding to the next uplink transmission resource of the uplink channel as the second time unit, and if the time unit corresponding to the uplink transmission resource of the uplink channel is in a non-idle state, continuing to determine the second time unit repeatedly.

Still further, the HARQ-ACK feedback information sending and sending provided by the embodiment of the present invention further includes:

under the condition that the second time unit is located behind the target time, stopping sending the first HARQ-ACK feedback information;

wherein the target time is a time satisfying a condition for terminating the transmission of the first HARQ-ACK feedback information.

Specifically, the condition for terminating the sending of the first HARQ-ACK feedback information may be HARQ-ACK feedback timeout. For example, it may be that HARQ-ACK is limited to be fed back within a certain time after the PDSCH ends a symbol/slot, and if the time limit is exceeded, the feedback is considered to be overtime, and the HARQ-ACK information is not fed back any more.

Further optionally, the sending the first HARQ-ACK feedback information in the step 202 in a second time unit includes:

sending the first HARQ-ACK feedback information through the uplink transmission resource corresponding to the second time unit;

the Uplink transmission resource corresponding to the second time unit may be a Physical Uplink Control CHannel (PUCCH) resource or a Physical Uplink Shared CHannel (PUSCH) resource, where the Uplink transmission resource corresponding to the second time unit may be a PUCCH or PUSCH resource indicated or scheduled by Downlink Control Information (DCI).

Namely, in the embodiment of the present invention, the HARQ-ACK feedback information may be sent through PUCCH resources or PUSCH resources.

Illustratively, the above embodiments are described in detail below by taking the example that the HARQ-ACK feedback information in the above embodiments is HARQ-ACK feedback information for a PDSCH transmitted by a network side device to a terminal device.

As shown in fig. 3, a network side device sends PDSCH1 to a terminal device in slot n1, and instructs the terminal device to send PUCCH1 in slot n1+ k1-1 to transmit HARQ-ACK feedback information of PDSCH1, the terminal device first needs to perform LBT before sending PUCCH1, and if the terminal device detects that an uplink channel is in an occupied state, PUCCH1 cannot be sent in slot n1+ k 1-1. In addition, the network side device also sends the PDSCH2 to the terminal device in slot n2, and instructs the terminal device to send HARQ-ACK feedback information of the PDSCH2 in slot n2+ k1-2 after slot n1+ k1-1, according to the instruction of the network side device, the terminal device will have uplink transmission resources (PUCCH resources) for transmitting the HARQ-ACK feedback information of the PDSCH2 in slot n2+ k1-2, so the terminal device determines the PUCCH resources (PUCCH 2 resources) according to the total bit number of the fed-back HARQ-ACK feedback information and the PUCCH resource indicator field (PRI) in the PDCCH2, and tries to send the HARQ-ACK feedback information of the PDSCH1 and the HARQ-ACK feedback information of the PDSCH2 through the PUCCH2 resources. The terminal equipment firstly needs to carry out LBT before sending PUCCH2, and if the terminal equipment detects that an uplink channel is in an idle state, the terminal equipment sends HARQ-ACK feedback information of PDSCH1 and HARQ-ACK feedback information of PDSCH2 on PUCCH 2.

It should be noted that, the method for determining the PUCCH by the terminal device according to the total bit number of the fed-back HARQ-ACK feedback information and the PUCCH resource indication field in PDCCH2 may be the same as in the prior art, for example, a resource set where the PUCCH is located is determined by the HARQ-ACK bit number, and then resources are determined in a certain determined resource set by the PRI. And are not limited herein.

Further, referring to fig. 4, in the embodiment shown in fig. 3, if the LBT detects that the uplink channel is still in an occupied state before the terminal device sends PUCCH2, and the network side device also sends PDSCH3 to the terminal device in slot n3, and instructs the terminal device to send HARQ-ACK feedback information of PDSCH3 in slot n3+ k1-3 after slot n2+ k1-2, according to the instruction of the network side device, the terminal device will have uplink transmission resources for transmitting HARQ-ACK feedback information of PDSCH2 in slot n2+ k1-2, so that the terminal device determines PUCCH resources (PUCCH 3) according to the total number of bits of the fed-back HARQ-ACK feedback information and PRI in PDCCH3, and tries to send HARQ-ACK feedback information of PDSCH1, HARQ-ACK feedback information of PDSCH2, and HARQ-ACK feedback information of PDSCH3 through PUCCH3 resources. Similarly, the terminal device needs to perform LBT before sending PUCCH3, and if the terminal device detects that the uplink channel is in an idle state, the terminal device sends HARQ-ACK feedback information of PDSCH3 and all HARQ-ACK feedback information that has not been sent since the LBT detected that the channel is busy (including HARQ-ACK feedback information of PDSCH1 and HARQ-ACK feedback information of PDSCH 2) in slot n3+ k 1-3. That is, the HARQ-ACK feedback information of PDSCH1, the HARQ-ACK feedback information of PDSCH2 and the HARQ-ACK feedback information of PDSCH3 are transmitted in slot n3+ k 1-3.

For example, referring to fig. 5, a network side device sends PDSCH1 to a terminal device at slot n1, and instructs the terminal device to send PUCCH1 at slot n1+ k1 to transmit HARQ-ACK feedback information of PDSCH1, the terminal device first needs to perform LBT before sending PUCCH1, and the terminal device cannot send PUCCH1 at slot n1+ k1 because it detects that an uplink channel is in an occupied state. In addition, the network side device also sends PDCCH2 to the terminal device in slot n2, and schedules the terminal device to send PUSCH in slot n2+ k2 after slot n1+ k1, and according to the instruction of the network side device, the terminal device will have uplink transmission resources (PUSCH resources) in slot n2+ k1, so the terminal device tries to multiplex the HARQ-ACK feedback information of PDSCH1 on the PUSCH resources for transmission. Similarly, the terminal device needs to perform LBT first before sending the PUSCH, and if the terminal device detects that the uplink channel is in an idle state, the terminal device multiplexes the HARQ-ACK feedback information of the PDSCH1 on the PUSCH resource to send.

On the basis of the above embodiment, if the LBT detects that the uplink channel is still in an occupied state before the terminal device sends PUCCH3, HARQ-ACK feedback information sent on the transmission resource and all HARQ-ACK feedback information that is not sent since the LBT detects that the channel is busy are transmitted through the next uplink transmission resource until the HARQ-ACK feedback information of all processes or the HARQ-ACK feedback information that is not fed back successfully meets the termination condition.

Further, in the foregoing embodiment, there is also a case where the LBT of the terminal device detects that the channel is in an idle state and sends a certain HARQ-ACK feedback information, but the network side device does not receive the HARQ-ACK feedback information, in this case, the network side device considers that the LBT detects that the channel is in an occupied state before the terminal device sends the HARQ-ACK feedback information, the HARQ-ACK feedback information is not sent yet and is sent on the subsequent uplink transmission resource, but the terminal device has sent the HARQ-ACK feedback information, so the terminal device does not send the HARQ-ACK feedback information again through the subsequent uplink transmission resource, and therefore, the bit (bit) number of the HARQ-ACK feedback information sent later may be disagreedly understood between the network side device and the terminal device, and the network side device needs to blindly detect the HARQ-ACK feedback information sent by the terminal device. For example: the method comprises the steps that a network side device sends PDSCH1 to a terminal device in slot n1, and instructs the terminal device to send PUCCH1 in slot n1+ k1-1 so as to transmit HARQ-ACK feedback information of the PDSCH1, the terminal device detects that an uplink channel is in an idle state before sending the PUCCH1, and therefore the PUCCH1 is sent in slot n1+ k1-1, but the network side device does not receive the PUCCH1 sent by the terminal device, at the moment, the network side device considers that the terminal device detects that the uplink channel is in an occupied state before sending the PUCCH1, the HARQ-ACK feedback information of the PDSCH1 is not sent yet and is sent through a subsequent uplink transmission resource, and the terminal device sends the HARQ-ACK feedback information of the PDSCH1 already, so that the HARQ-ACK feedback information of the PDSCH1 is not sent through the subsequent uplink transmission resource any more. In this case, when the terminal device transmits HARQ-ACK feedback information of PDSCH2 through PUCCH2 resources, the terminal device only transmits HARQ-ACK feedback information of PDSCH2, but the network side device considers that the terminal device also transmits HARQ-ACK feedback information of PDSCH1, so that the network side device and the terminal device may have inconsistent understanding of the bits of the transmitted HARQ-ACK feedback information, and may cause inconsistent understanding of the PUCCH resources for transmitting HARQ-ACK information, and the network side device needs to blindly detect the HARQ-ACK feedback information transmitted by the terminal device on different PUCCH resources.

In order to avoid inconsistency between the network side device and the terminal device in understanding the bit number of the transmitted HARQ-ACK feedback information and blind detection of the network side device, the terminal device only adopts one of the following two HARQ-ACK feedback information transmission schemes to transmit the HARQ-ACK feedback information:

scheme I,

The terminal equipment transmits the HARQ-ACK feedback information which indicates the transmission in the time unit only in one time unit.

For example: HARQ-ACK feedback information for PDSCH2 is sent only in slot n2+ k1-2.

Scheme II,

And the terminal equipment transmits the HARQ-ACK feedback information of all the processes configured for the terminal equipment in a time unit.

For example: and sending the HARQ-ACK feedback information of the PDSCH1, the HARQ-ACK feedback information of the PDSCH2 and the HARQ-ACK feedback information of other processes in slot n2+ k1-2.

That is, step 202 (transmitting the first HARQ-ACK feedback information in the second time unit) includes: and sending HARQ-ACK feedback information of all processes configured for the terminal equipment through the uplink transmission resource corresponding to the second time unit.

And the uplink transmission resource corresponding to the second time unit is a PUCCH resource or a PUSCH resource.

In the above embodiment, because the terminal device transmits the HARQ-ACK feedback information indicating that the terminal device transmits the HARQ-ACK feedback information in the time unit only in the uplink transmission resource corresponding to the time unit, or transmits the HARQ-ACK feedback information of all processes configured for the terminal device in the uplink transmission resource corresponding to the time unit, only two transmission schemes exist, so that the busy detection of the network side device can be reduced.

Specifically, in the above embodiment, sending HARQ-ACK feedback information of all processes configured for the terminal device through the uplink transmission resource corresponding to the second time unit may specifically include the following two implementation manners.

The first implementation mode,

And sending effective HARQ-ACK feedback information of the first process and the second process, and determining the HARQ-ACK feedback information by the terminal equipment in a mode of filling preset information for other processes configured for the terminal equipment.

That is, optionally, before step 202 (sending HARQ-ACK feedback information of all processes configured for the terminal device through the uplink transmission resource corresponding to the second time unit), the sending method for HARQ-ACK feedback information according to the embodiment of the present invention further includes:

setting HARQ-ACK feedback information of each process in the target process set as preset information, such as NACK;

the target process set includes each process except a first process and a second process in all processes configured for the terminal device, where the first process is a process corresponding to the first HARQ-ACK feedback information, and the second process is a process indicating that the terminal device performs HARQ-ACK feedback information transmission in the second time unit.

The second implementation mode,

And the terminal equipment sends the effective HARQ-ACK feedback information of each process in all the processes configured for the terminal equipment through the uplink transmission resource corresponding to the second time unit.

Since the terminal device needs to send the effective HARQ-ACK feedback information of each of all processes configured for the terminal device, the terminal device needs to store the HARQ-ACK feedback information that is decoded and output recently by each process configured for the terminal device.

Further optionally, in a case that the uplink transmission resource corresponding to the second time unit is a PUSCH resource, the method further includes:

sending second indication information through the PUSCH resource corresponding to the second time unit;

the second indication information is used to indicate that the HARQ-ACK feedback information sent through the PUSCH resource corresponding to the second time unit includes the second HARQ-ACK feedback information (including a case that the second HARQ-ACK feedback information is 0, that is, there is no second HARQ-ACK feedback information), or the second indication information is used to indicate that the HARQ-ACK feedback information sent through the PUSCH resource corresponding to the second time unit includes HARQ-ACK feedback information of all processes configured for the terminal device.

That is, when the uplink transmission resource for transmitting the first HARQ-ACK feedback information is a PUSCH resource, the PUSCH resource further transmits second indication information, so that the network side device learns, according to the second indication information, whether the HARQ-ACK feedback information transmitted through the PUSCH resource corresponding to the second time unit includes only the second HARQ-ACK feedback information or includes HARQ-ACK feedback information of all processes configured for the terminal device.

In the foregoing embodiment, the second indication information further indicates that the terminal device only uses the second scheme to transmit HARQ-ACK feedback information, so that the network side device can directly know, through the second indication information, that HARQ-ACK feedback information of all processes configured for the terminal device is sent in the second time unit, thereby avoiding the network side device from performing blind detection.

Optionally, the number of bits occupied by the second indication information is 1.

Exemplarily, when a bit occupied by the second indication information is a bearer 1, it is determined that the corresponding time unit sends HARQ-ACK feedback information of all processes configured for the terminal device, and when a bit occupied by the second indication information is a bearer 0, it is determined that the corresponding time unit sends the second HARQ-ACK feedback information; or when the bit occupied by the second indication information is a bearer 0, determining that the corresponding time unit sends the HARQ-ACK feedback information of all processes configured for the terminal device, and when the bit occupied by the second indication information is a bearer 1, determining that the corresponding time unit only sends the HARQ-ACK feedback information indicating that the time unit sends.

Further optionally, the second indication information may be transmitted in a puncturing (puncturing) or rate matching (rate matching) manner. In order for the network side device to correctly receive the indication information, the indication information needs to be transmitted at a predefined location.

Example II,

The embodiment of the invention provides a HARQ-ACK feedback information transmission method, which applies terminal equipment. Specifically, referring to fig. 6, the HARQ-ACK feedback information transmission method includes:

step 601, the terminal device receives first indication information from the network side device.

Wherein the first indication information indicates that the terminal device sends first HARQ-ACK feedback information in a pending time unit (to be determined).

That is, the first indication information does not explicitly indicate the time unit for sending the first HARQ-ACK feedback information and the uplink transmission resource, but indicates the time unit for sending the first HARQ-ACK feedback information and the uplink transmission resource pending (the timing and resource for the correcting PDSCH wire defined).

Step 602, the terminal device sends the first HARQ-ACK feedback information in a second time unit under the condition that the first HARQ-ACK feedback information is not sent.

Wherein the second time unit has corresponding uplink transmission resources, and the uplink channel is in an idle state in the second time unit, and the first HARQ-ACK feedback information may also be called pending HARQ-ACK.

The HARQ-ACK feedback information transmission method provided by the embodiment of the invention comprises the steps of firstly receiving first indication information from network side equipment, wherein the first indication information indicates the terminal equipment to send the first HARQ-ACK feedback information in an undetermined time unit; transmitting the first HARQ-ACK feedback information in a second time unit under the condition that the first HARQ-ACK feedback information is not transmitted; wherein the second time unit has corresponding uplink transmission resources, and the uplink channel is in an idle state within the second time unit. That is, in the embodiment of the present invention, the first HARQ-ACK feedback information may be sent in the second time unit when the network side device does not explicitly indicate the time unit and the uplink transmission resource for sending the first HARQ-ACK feedback information, so that the embodiment of the present invention provides an implementation manner for sending the HARQ-ACK feedback information when the time unit and the uplink transmission resource for sending the HARQ-ACK feedback information are not explicitly indicated.

The following describes the above embodiments in detail by taking the example that the feedback information in the above embodiments is HARQ-ACK feedback information for PDSCH transmitted by the network side device to the terminal device.

As shown in fig. 7, the network side device sends PDSCH1 to the terminal device in slot n1, where Downlink Control Information (DCI) corresponding to PDSCH1 is DCI1, a PDSCH-to-HARQ-timing indicator field in DCI1 indicates time and resource pending (to determined) of HARQ-ACK feedback of PDSCH1 of the terminal device, after slot n1, the network side device sends PDSCH2 to the terminal device in slot n2, where Downlink Control Information (DCI) corresponding to PDSCH1 is DCI2, and a PDSCH-to-HARQ-timing indicator field in DCI2 indicates time when HARQ-ACK feedback Information of PDSCH2 is sent by the terminal device as n2+ k1-2. According to the indication of the base station, the terminal equipment has uplink transmission resources for transmitting the HARQ-ACK feedback information of the PDSCH2 in slot n2+ k1-2, so the terminal equipment determines PUCCH resources (PUCCH 2 resources) according to the total bit number of the fed-back HARQ-ACK feedback information and PUCCH resources PRI in the PDCCH2, and tries to send the HARQ-ACK feedback information of the PDSCH1 and the HARQ-ACK feedback information of the PDSCH2 through the PUCCH2 resources, or tries to send the HARQ-ACK feedback information of all processes configured by the terminal including the HARQ-ACK feedback information of the PDSCH1 and the HARQ-ACK of the PDSCH 2.

Similarly, the terminal device needs to perform LBT before sending, and if the terminal device detects that the uplink channel is in an idle state, the terminal device sends HARQ-ACK feedback information of PDSCH1 and HARQ-ACK feedback information of PDSCH2 on PUCCH2, and if the terminal device detects that the uplink channel is in an occupied state, the terminal device attempts to send through the next uplink transmission resource.

The terminal equipment firstly needs to perform LBT before sending the HARQ-ACK feedback of the PDSCH2, and if the terminal equipment detects that an uplink channel is in an idle state, the terminal equipment sends the HARQ-ACK feedback information of the PDSCH2 and the HARQ-ACK feedback information of the PDSCH1 without specific sending time and sending resources in n2+ k1-2.

the target uplink transmission resource is an uplink transmission resource of which the uplink channel is in an idle state in a corresponding time unit.

Optionally, when the second time unit is located after the target time, the sending of the first HARQ-ACK feedback information is terminated;

Optionally, the sending the first HARQ-ACK feedback information in the second time unit includes:

and the uplink transmission resource corresponding to the second time unit is a Physical Uplink Control Channel (PUCCH) resource or a Physical Uplink Shared Channel (PUSCH) resource.

sending HARQ-ACK feedback information of all processes configured for the terminal equipment through uplink transmission resources corresponding to the second time unit;

Optionally, before sending HARQ-ACK feedback information of all processes configured for the terminal device through the uplink transmission resource corresponding to the second time unit, the method further includes:

Optionally, in a case that the uplink transmission resource corresponding to the second time unit is a PUSCH resource, the method further includes:

and the second indication information is used for indicating that the HARQ-ACK feedback information of all processes configured for the terminal equipment is sent through the PUSCH resource corresponding to the second time unit.

Optionally, the sending HARQ-ACK feedback information of all processes configured for the terminal device through the uplink transmission resource corresponding to the second time unit includes:

and sending the effective HARQ-ACK feedback information of each process in all the processes configured for the terminal equipment through the uplink transmission resource corresponding to the second time unit.

Note that, when the uplink transmission resource corresponding to the second time unit is a PUSCH resource, the HARQ-ACK feedback information indicating that the transmission is performed in the second time unit may be 0 (shown in fig. 5). That is, the network side device does not indicate to transmit HARQ-ACK feedback information in the time unit, and only has a PUSCH resource scheduling indication. In addition, when the uplink transmission resource corresponding to the two time elements is a PUSCH resource (PUSCH resource shown in fig. 8), the HARQ-ACK feedback information transmitted in the second time element may be other than 0. That is, the network side device instructs to transmit the HARQ-ACK feedback information at the second time unit. At this time, the terminal device feeds back the first HARQ-ACK feedback information and the second HARQ-ACK feedback information on one PUCCH resource, the network side device schedules the PUSCH resource again in the time unit, and the PUCCH resource (PUCCH 2 resource) fed back the HARQ-ACK overlaps with the PUCCH resource scheduled by the network side device in the time unit in the time domain, so the terminal multiplexes the HARQ-ACK feedback information sent by the PUCCH2 resource onto the PUSCH resource for transmission.

For the explanation, the specific implementation and the beneficial effects of the embodiments, reference may be made to the first example, and repeated descriptions are omitted here to avoid redundancy.

Example III,

The embodiment of the invention provides a HARQ-ACK feedback information transmission method, which applies terminal equipment. Specifically, referring to fig. 9, the HARQ-ACK feedback information transmission method includes:

step 901, the terminal device receives at least two pieces of indication information from the network side device.

Each piece of the at least two pieces of indication information indicates that the terminal device performs HARQ-ACK feedback information transmission in a target time unit, each piece of the at least two pieces of indication information indicates a channel access mode, and the channel access modes indicated by the at least two pieces of indication information include at least two.

In the above embodiment, the at least two channel access manners indicated by the indication information include at least two, which means that the channel access manners indicated by the at least two indication information include two or more in total.

After the above step 901, the terminal device may perform any one of the following

steps

902 and 903.

Step 902, the terminal device performs channel access by using a channel access mode with the highest priority among the at least two channel access modes.

Specifically, the at least two channel access manners in the above embodiment may be: includes at least two channel access categories (channel access categories), which may also be: including at least one or more channel access categories (channel access categories), and including at least two channel access priority classes (channel access priority classes) for the channel access categories.

For example: the at least two channel access modes may include: type 1LBT (category 1 LBT) and type 2LBT (category 2 LBT).

For another example: the at least two channel access modes may include: type 4LBT (category 1 LBT) of low priority level and type 4LBT (category 4 LBT) of high priority level.

For another example: the at least two channel access modes may include: type 1LBT (category 1 LBT), type 2LBT (category 2 LBT), type 4LBT of low priority level (category 1 LBT), and type 4LBT of high priority level (category 4 LBT).

Step 903, the terminal device performs channel access by using a channel access mode indicating that the time is at the last of the at least two channel access modes.

The HARQ-ACK feedback information transmission method provided by the embodiment of the invention comprises the steps of firstly receiving at least two pieces of indication information from network side equipment; the at least two pieces of indication information indicate the terminal device to transmit at least two pieces of HARQ-ACK feedback information in a target time unit, and the channel access modes indicated by the at least two pieces of indication information include at least two, and then the channel access mode with the highest priority among the at least two channel access modes is adopted for channel access or the channel access mode indicating that the time is the last among the at least two channel access modes is adopted for channel access.

It should be noted that, among the at least two channel access types or channel access priority levels, the channel access type or channel access priority level with the highest priority respectively corresponds to the lowest channel access type (the lower channel access category) or the lowest channel access priority level value (the lower channel access priority class).

The above embodiments will be described in detail below by taking an example in which the feedback information in the above embodiments is HARQ-ACK feedback information for a PDSCH transmitted by a network side device to a terminal device.

As shown in fig. 10, the network side device sends PDSCH1 to the terminal device in slot n1, and instructs the terminal device to send Physical Uplink Control CHannel1 (PUCCH 1) in slot n1+ k1 to transmit HARQ-ACK feedback information of PDSCH1, because PUCCH1 sent in n1+ k1 is outside shared CHannel Occupancy Time (Share COT) of the network side device, in order to meet the requirement of the rule (regulation), the network side device simultaneously instructs the terminal device to perform type 4LBT (category 4 LBT) before PUCCH1 is transmitted. And before slot n1+ k1, the network side device seizes the channel again, and sends PDSCH2 to the terminal device at slot n + m, and also instructs the terminal device to feed back HARQ-ACK feedback information at slot n1+ k 1. Since PUCCH2 transmitted in n1+ k1 is within the shared COT of the network side device, according to the requirement of the rule, the network side device may instruct the terminal device to perform type 1LBT (category 1 LBT) or type 2LBT (category 2 LBT) before transmitting PUCCH2, if the network side device instructs the terminal device to perform category 1LBT or category2LBT before PUCCH2 transmitted in n1+ k1, the terminal device needs to feedback HARQ-ACK information of PDSCH1 and PDSCH2 on one PUCCH resource (i.e. PUCCH2 resource, which may be the same as PUCCH1 resource), and the terminal device is respectively instructed to perform category 4LBT, category 1LBT/category 2LBT when feeding back HARQ-ACK, and the terminal device performs t using the LBT type with higher priority in the indicated LBT types, i.e. category 1LBT/category 2LBT; or the terminal equipment adopts the last indicated LBT type (category 1LBT/category 2 LBT) in the indicated LBT types to carry out LBT.

Further optionally, the HARQ-ACK sending method provided in the embodiment of the present invention further includes:

and under the condition that the indication information with the indication time at the last in the at least two channel access modes comprises at least two indication information, adopting the indication information with the maximum corresponding serving cell index in the indication information with the indication time at the last.

That is, when there are a plurality of indication information indicating the last time, the corresponding serving cells are sorted from small to large, and channel access is performed in the channel access mode indicated by the obtained last indication information.

Example four,

Some embodiments of the present invention may perform division of functional modules on a terminal device or the like according to the above method examples. For example, the functional blocks may be divided for the respective functions, or two or more functions may be integrated into one block. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in some embodiments of the present invention, the division of the modules is schematic, and is only one division of logic functions, and there may be another division in actual implementation.

In the case of an integrated unit, fig. 11 shows a schematic diagram of a possible structure of the terminal device 1100 involved in the above embodiment, where the terminal device 1100 includes:

a receiving unit 1101, configured to receive first indication information from a network side device, where the first indication information indicates that the terminal device sends first HARQ-ACK feedback information in a first time unit, or the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit;

a sending unit 1102, configured to send the first HARQ-ACK feedback information in a second time unit when the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in a first time unit and detects that an uplink channel is in an occupied state in the first time unit, or when the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit and the first HARQ-ACK feedback information is not sent;

Optionally, the sending unit 1102 is further configured to terminate sending the first HARQ-ACK feedback information when the second time unit is located after the target time;

Optionally, the sending unit 1102 is specifically configured to send the first HARQ-ACK feedback information through the uplink transmission resource corresponding to the second time unit;

Optionally, the sending unit 1102 is specifically configured to send HARQ-ACK feedback information of all processes configured for the terminal device through the uplink transmission resource corresponding to the second time unit;

Optionally, as shown in fig. 11, the terminal device 1100 further includes: a processing unit 1103;

the processing unit 1103 is configured to set, before the sending unit sends, through the uplink transmission resource corresponding to the second time unit, HARQ-ACK feedback information of all processes configured for the terminal device, HARQ-ACK feedback information of each process in a target process set as preset information;

Optionally, in a case that the uplink transmission resource corresponding to the second time unit is a PUSCH resource, the sending unit 1102 is further configured to send second indication information through the PUSCH resource corresponding to the second time unit;

Optionally, the sending unit 1102 is specifically configured to send, through the uplink transmission resource corresponding to the second time unit, the effective HARQ-ACK feedback information of each of all processes configured for the terminal device.

The terminal device provided by the embodiment of the invention firstly receives first indication information from a network side device, wherein the first indication information indicates that the terminal device sends first HARQ-ACK feedback information in a first time unit, or the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit; when the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a first time unit and detects that an uplink channel is in an occupied state in the first time unit, or the first indication information indicates that the terminal equipment sends the first HARQ-ACK feedback information in a pending time unit and the first HARQ-ACK feedback information is not sent, sending the first HARQ-ACK feedback information in a second time unit; wherein the second time unit is located after the first time unit, the second time unit has corresponding uplink transmission resources, and the uplink channel is in an idle state in the second time unit. That is, in the embodiment of the present invention, the first HARQ-ACK feedback information may be pushed to a second time unit after the first time unit to be sent when the uplink channel indicates that the first time unit for sending the first HARQ-ACK feedback information is in an occupied state in the first indication information, or the first HARQ-ACK feedback information may be sent in the second time unit when the first indication information indicates a time unit in which the first HARQ-ACK feedback information is not explicitly sent and the first HARQ-ACK feedback information is not sent. According to the embodiment of the invention, under the condition that the uplink channel indicates that the first time unit for sending the first HARQ-ACK feedback information is in the occupied state in the first indication information, the first HARQ-ACK feedback information is pushed back to the second time unit after the first time unit for sending, so that the problem that the terminal equipment cannot send the HARQ-ACK feedback information due to the fact that the uplink channel is detected to be in the occupied state in the specified time period in a communication system running in an unauthorized frequency band can be solved, and the downlink throughput of the communication system is prevented from being influenced.

In the case of an integrated unit, fig. 12 shows a schematic diagram of a possible structure of the terminal device 1200 involved in the above embodiment, where the terminal device 1200 includes:

a receiving unit 1201, configured to receive at least two pieces of indication information from a network side device; each piece of the at least two pieces of indication information indicates that the terminal equipment sends HARQ-ACK feedback information in a target time unit, each piece of the at least two pieces of indication information indicates a channel access mode, and the channel access modes indicated by the at least two pieces of indication information include at least two types;

a detecting unit 1202, configured to perform channel access by using a channel access mode with a highest priority among the at least two channel access modes, or perform channel access by using a channel access mode indicating that time is at the last among the at least two channel access modes.

Optionally, the detecting unit 1202 is further configured to, when the indication information indicating that the indication time is located at the last in the at least two channel access manners includes at least two, adopt the indication information indicating that the corresponding serving cell index is the largest in the indication information indicating that the indication time is located at the last.

The terminal device provided by the embodiment of the invention firstly receives at least two pieces of indication information from the network side device; the at least two pieces of indication information indicate the terminal device to transmit at least two pieces of HARQ-ACK feedback information in a target time unit, and the channel access manners indicated by the at least two pieces of indication information include at least two, and then the channel access manner with the highest priority among the at least two channel access manners or the channel access manner indicated last in the at least two channel access types or channel access priority levels is used for channel access.

Fig. 13 is a schematic diagram of a hardware structure of a terminal device for implementing the above embodiment of the present invention, where the terminal device 1300 includes but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 13 does not constitute a limitation of the terminal device, and that the terminal device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 101 is configured to receive first indication information from a network side device, where the first indication information indicates that the terminal device sends first HARQ-ACK feedback information in a first time unit, or the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit;

the radio frequency unit 101 further sends the first HARQ-ACK feedback information in a second time unit when the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in a first time unit and detects that an uplink channel is in an occupied state in the first time unit, or the first indication information indicates that the terminal device sends the first HARQ-ACK feedback information in an undetermined time unit and the first HARQ-ACK feedback information is not sent;

Or;

the radio frequency unit 101 is configured to receive at least two pieces of indication information from a network side device; each piece of the at least two pieces of indication information indicates that the terminal equipment sends HARQ-ACK feedback information in a target time unit, each piece of the at least two pieces of indication information indicates a channel access mode, and the channel access modes indicated by the at least two pieces of indication information include at least two types;

the processor 110 is configured to perform channel access by using a channel access mode with a highest priority in the at least two channel access modes, or perform channel access by using a channel access mode indicating that time is at the last in the at least two channel access modes.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals during a message transmission or call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 110; in addition, uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.

The terminal device provides wireless broadband internet access to the user through the network module 102, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the terminal device (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive an audio or video signal. The input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the Graphics processor 1041 processes image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode.

The terminal device also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or the backlight when the terminal device is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 1071 (e.g., operations by a user on or near touch panel 1071 using a finger, stylus, or any suitable object or attachment). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Specifically, the other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 13, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the terminal device, and is not limited herein.

The interface unit 108 is an interface for connecting an external device to the terminal apparatus. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus or may be used to transmit data between the terminal apparatus and the external device.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the terminal device, connects various parts of the entire terminal device by using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the terminal device. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The terminal device may further include a power supply 111 (such as a battery) for supplying power to each component, and preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the terminal device includes some functional modules that are not shown, and are not described herein again.

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 computer program implements each process in the HARQ-ACK feedback information transmission method, and can achieve the same technical effect, and in order to avoid repetition, the computer program is not described herein again.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the HARQ-ACK feedback information transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the computer program is not described herein again. The computer readable storage medium is ROM, RAM, magnetic disk or 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 a … …" does not exclude the presence of another identical element 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 (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network-side 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.

Claims

1. A method for transmitting hybrid automatic repeat acknowledgement (HARQ-ACK) feedback information is applied to a terminal device, and comprises the following steps:

performing channel access by adopting a channel access mode with the highest priority in the at least two channel access modes;

or;

performing channel access by adopting a channel access mode indicated by the indication information with the indication time at the last in the at least two channel access modes;

and under the condition that the channel access is carried out according to the channel access mode indicated by the indication information and the channel access is successful, the terminal equipment sends HARQ-ACK feedback information in the target time unit.

2. The method of claim 1, further comprising:

and under the condition that the indication information with the indication time at the last in the at least two channel access modes comprises at least two indication information, adopting the indication information with the largest corresponding service cell index in the indication information with the at least two indication times at the last.

3. A terminal device, comprising:

a receiving unit, configured to receive at least two pieces of indication information from a network side device; each piece of the at least two pieces of indication information indicates that the terminal equipment sends HARQ-ACK feedback information in a target time unit, each piece of the at least two pieces of indication information indicates a channel access mode, and the channel access modes indicated by the at least two pieces of indication information include at least two types;

a detecting unit, configured to perform channel access in a channel access mode with a highest priority in the at least two channel access modes, or perform channel access in a channel access mode indicating that time is at the last in the at least two channel access modes;

and a sending unit, configured to send HARQ-ACK feedback information in the target time unit when channel access is performed according to the channel access method indicated by the indication information and the channel access is successful.

4. The terminal device of claim 3,

the detecting unit is further configured to, when the indication information indicating that the indication time is located at the last in the at least two channel access manners includes at least two, adopt the indication information indicating that the corresponding serving cell index is the largest in the indication information indicating that the indication time is located at the last.

5. A terminal device, comprising: processor, memory and computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the HARQ-ACK feedback information transmission method according to any of the claims 1 to 2.

6. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the HARQ-ACK feedback information transmission method according to any of the claims 1 to 2.