WO2021092732A1

WO2021092732A1 - Harq-ack transmission method and apparatus, and communication device

Info

Publication number: WO2021092732A1
Application number: PCT/CN2019/117239
Authority: WO
Inventors: 李明菊
Original assignee: 北京小米移动软件有限公司
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2021-05-20
Also published as: CN113115592A; CN113115592B

Abstract

Disclosed are an HARQ transmission method and apparatus, and a communication device. The HARQ-ACK transmission method is applied to a user equipment (UE), and comprises: receiving first DCI for scheduling a PDSCH resource on an unlicensed channel, wherein the first DCI includes an information domain of a time domain offset K1; and when the information domain of K1 included in the first DCI carries a first value, and second DCI that carries a second value is not received within N time slots after the PDSCH resource, sending an HARQ-ACK in the Nth time slot after the PDSCH resource and/or a time slot after the Nth time slot, wherein N is a positive integer; the second value is different from the first value; and the HARQ-ACK is feedback information of downlink data transmitted by means of the PDSCH resource scheduled by the first DCI.

Description

HARQ-ACK transmission method and device, communication equipment

Technical field

The embodiments of the present disclosure relate to the field of wireless communication but are not limited to the field of wireless communication, and in particular, to a hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat request acknowledgement, HARQ-ACK) transmission method and device, and communication equipment.

Background technique

On the unlicensed channel of the New Radio (NR) of the 5th Generation (5th Generation, 5G), when the base station schedules Physical Downlink Shared Channel (PDSCH) resources (configured as PDSCH communication resources), The data that needs to be transmitted for the PDSCH resource indicates the corresponding HARQ-ACK transmission resource.

In the 5G NR unlicensed channel (NR-Unlicense, NR-U), the DCI for scheduling PDSCH resources introduces a non-numeric time domain offset (K1) information field. And when the K1 information field is used to carry a non-numeric time-domain offset, it is determined that the User Equipment (UE) temporarily does not feed back the HARQ-ACK of the PDSCH scheduled by the current DCI. After the subsequent terminal receives the DCI, the The K1 information field carries a time-domain offset of a normal value and then feeds back the HARQ-ACK for the PDSCH that has not yet fed back the HARQ-ACK.

Summary of the invention

The embodiments of the present application disclose a HARQ transmission method and device, and communication equipment.

The first aspect of the embodiments of the present application provides a HARQ-ACK transmission method for hybrid automatic repeat request response, which is characterized in that it is applied to a UE and includes:

Receiving first downlink control information (Downlink Control Information, DCI) for scheduling PDSCH resources on an unlicensed channel; the first DCI includes a time domain offset (K1) information field;

When the K1 information field included in the first DCI carries the first value, and the second DCI carrying the second value is not received in N time slots after the PDSCH resource, the HARQ-ACK is sent in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value is different from the first value ; The HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.

The second aspect of the embodiments of the present application provides a HARQ-ACK transmission method, which is applied in a base station, and includes:

Issue the first DCI for scheduling PDSCH resources on an unlicensed channel; the feature is that the first DCI includes a K1 information field;

When the K1 information field included in the first DCI carries the first value, and the second DCI carrying the second value is not issued in the N time slots after the PDSCH resource, the HARQ-ACK is received in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value is different from the first value ; The HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.

The third aspect of the embodiments of the present application provides a HARQ-ACK transmission device, which is applied to a UE, and includes:

The first receiving module is configured to receive a first DCI for scheduling PDSCH resources on an unlicensed channel; the first DCI is characterized in that the first DCI includes a K1 information field;

The first sending module is configured to, when the K1 information field included in the first DCI carries the first value, and the second value is not received in N time slots after the PDSCH resource In the second DCI, HARQ-ACK is sent in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value Different from the first value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.

A fourth aspect of the embodiments of the present application provides a HARQ-ACK transmission device, which is characterized in that it includes:

The second sending module is configured to deliver the first downlink control information DCI for scheduling PDSCH resources on the unlicensed channel; it is characterized in that the first DCI includes a K1 information field;

The second receiving module is configured to, when the K1 information field included in the first DCI carries the first value, and does not deliver the second value in the N time slots after the PDSCH resource In the second DCI, HARQ-ACK is received in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value Different from the first value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.

A fifth aspect of the embodiments of the present application provides a communication device, including:

antenna,

Memory

The processor is respectively connected to the antenna and the memory, and is configured to control the transmission and reception of wireless signals of the antenna by executing computer-executable instructions stored on the memory, and can implement the aforementioned first aspect or The HARQ-ACK transmission method provided by the second aspect.

In the technical solution provided by the embodiments of the present application, when the K1 information field of the first DCI for scheduling PDSCH resources carries the first value, if the K1 information field carries the second value for the received K1 information field in N time slots after the PDSCH resource The second DCI of the PDSCH resource, the UE will send HARQ-ACK in the Nth time slot and/or the time slot after the Nth time slot after the PDSCH resource, so that when the base station does not schedule PUCCH resources for sending HARQ-ACK, The UE uses the corresponding PUCCH resource to report the HARQ-ACK by itself. On the one hand, the base station can receive HARQ-ACK in time. On the other hand, when the control information load in the cell is heavy in some cases, the base station can receive HARQ-ACK based on this method to implement resource scheduling for HARQ-ACK transmission. Reduce the overhead of scheduling signaling.

Description of the drawings

FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the disclosure;

2 is a schematic flowchart of a HARQ-ACK transmission method provided by an embodiment of the disclosure;

FIG. 3 is a schematic flowchart of a HARQ-ACK transmission method provided by an embodiment of the disclosure;

4 is a schematic flowchart of a HARQ-ACK transmission method provided by an embodiment of the disclosure;

FIG. 5 is a schematic flowchart of a HARQ-ACK transmission method provided by an embodiment of the disclosure;

FIG. 6 is a schematic structural diagram of a HARQ-ACK transmission device provided by an embodiment of the disclosure;

FIG. 7 is a schematic structural diagram of a HARQ-ACK transmission device provided by an embodiment of the disclosure;

FIG. 8 is a schematic structural diagram of a UE provided by an embodiment of the disclosure;

FIG. 9 is a schematic structural diagram of a base station provided by an embodiment of the disclosure.

Detailed ways

The exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the embodiments of the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present disclosure. The singular forms of "a", "" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and/or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "when" or "in response to determination".

Please refer to FIG. 1, which shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure. As shown in FIG. 1, the wireless communication system is a communication system based on cellular mobile communication technology. The wireless communication system may include several UEs 11 and several base stations 12.

Wherein, UE11 may be a device that provides voice and/or data connectivity to the user. The UE11 can communicate with one or more core networks via the Radio Access Network (RAN). The UE11 can be an Internet of Things UE, such as sensor devices, mobile phones (or “cellular” phones), and Internet of Things. The computer of the UE, for example, may be a fixed, portable, pocket-sized, handheld, built-in computer or vehicle-mounted device. For example, station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote UE ( remote terminal), access UE (access terminal), user equipment (user terminal), user agent (user agent), user equipment (user device), or user UE (user equipment, UE). Alternatively, UE11 may also be a device of an unmanned aerial vehicle. Alternatively, the UE 11 may also be a vehicle-mounted device, for example, it may be a trip computer with a wireless communication function, or a wireless communication device with an external trip computer. Alternatively, the UE 11 may also be a roadside device, for example, it may be a street lamp, signal lamp, or other roadside device with a wireless communication function.

The base station 12 may be a network side device in a wireless communication system. The wireless communication system may be a 5G system, also known as a new radio (NR) system or a 5G NR system. Or, the wireless communication system may be a system supporting New Radio-Unlicense (NR-U). Or the wireless communication system may also be the next-generation system of the 5G system. Among them, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network).

Wherein, the base station 12 may be a base station (gNB) adopting a centralized and distributed architecture in the 5G system. When the base station 12 adopts a centralized and distributed architecture, it usually includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Medium Access Control, MAC) layer protocol stack; distribution; The unit is provided with a physical (Physical, PHY) layer protocol stack, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12.

A wireless connection can be established between the base station 12 and the UE 11 through a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard. For example, the wireless air interface is a new air interface; or, the wireless air interface can also be a next-generation mobile based on 5G. The wireless air interface of the communication network technology standard.

In some embodiments, an E2E (End to End, end-to-end) connection may also be established between UE11. In some embodiments, the above-mentioned wireless communication system may further include a network management device 13.

Several base stations 12 are connected to the network management device 13 respectively. The network management device 13 may be a core network device in a wireless communication system. For example, the network management device 13 may be a mobility management entity (Mobility Management Entity) in an Evolved Packet Core (EPC) network. MME). Alternatively, the network management device may also be other core network devices, such as Serving GateWay (SGW), Public Data Network GateWay (PGW), Policy and Charging Rules function unit (Policy and Charging Rules). Function, PCRF) or Home Subscriber Server (HSS), etc. The implementation form of the network management device 13 is not limited in the embodiment of the present disclosure.

As shown in FIG. 2, an embodiment of the present application provides a HARQ-ACK transmission method, which is applied to a UE and includes:

S110: Receive a first DCI for scheduling PDSCH resources on an unlicensed channel, where the first DCI includes a K1 information field;

S120: When the K1 information field included in the first DCI carries the first value, and the second DCI carrying the second value is not received in N time slots after the PDSCH resource, HARQ-ACK is sent in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value is different from the first value. Value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.

In the embodiments of the present application, the UE may be various types of UEs, for example, a common mobile terminal and a machine type communication (Machine Type Communication, MTC) terminal. Common mobile terminals may include: mobile phones, tablet computers, or wearable devices. MTC terminals include, but are not limited to, Internet of Things (IoT) devices. The IoT device includes, but is not limited to, smart water meters and/or smart electricity meters.

The UE receives the first DCI for scheduling PDSCH resources on the unlicensed channel. The first DCI will indicate PDSCH resources. In this way, the UE can receive the downlink data sent by the base station on the corresponding PDSCH resource according to the first DCI. The first DCI is one of the DCIs sent by the base station at the physical layer. The PDSCH resource is a communication resource configured for the PDSCH to transmit downlink data.

The first DCI includes a K1 information field, and the values carried in the K1 information field can be divided into two types, one is the first value, and the other is the second value. Here, the number of the first value and the second value may be one or more. For example, the first value may be one of the values that can be carried in the K1 information field. For example, the K1 information field includes 3 binary bits, and the value carried by the K1 information field ranges from 0 to 7. At this time, the first value can be any one from 0 to 7. For example, the first value may be 0, and the second value may be any one of 1 to 7.

If the first value is 1, the other values of the KI information field are all the second values, which can make the second value have a larger value range, so that the base station schedules PUCCH resources to upload HARQ- based on the K1 information field. Scheduling flexibility during ACK is maintained to be maximized.

If the K1 information field carries the first value, the first value indicates that the transmission of HARQ-ACK is not triggered. The HARQ-ACK may be HARQ-ACK sent based on a one-shot HARQ-ACK feedback mechanism. The one-time HARQ-ACK feedback mechanism here is: a HARQ-ACK sending mechanism that sends all the HARQ-ACKs of all HARQ processes at one time. Of course, in the embodiment of the present application, the HARQ-ACK reported by the UE may also be a feedback mode of a non-one-time HARQ-ACK feedback mechanism, for example, only the HARQ-ACK of the HARQ process corresponding to the downlink data that has been currently transmitted is reported.

If the K1 information field carries the second value, it means that HARQ-ACK transmission is triggered.

After receiving the first DCI, the UE will monitor the second DCI in N time slots after the PDSCH resource indicated by the first DCI. Here, the second DCI and the first DCI are both DCI issued by the base station, and the difference is: the first DCI and the second DCI are DCI issued by the base station at different times. If the base station does not receive the second DCI carrying the second value in the K1 information field, but the UE still needs to send HARQ-ACK to trigger the base station to retransmit data when the downlink data reception fails. In the embodiment of the present application, HARQ-ACK will be sent in the Nth time slot and/or the time slot after the Nth time slot after the PDSCH resource, so that the HARQ-ACK is sent without the base station scheduling through signaling. When the PUCCH resource of the ACK is used, the UE uses the corresponding PUCCH resource to report the HARQ-ACK by itself. On the one hand, the base station can receive HARQ-ACK in time. On the other hand, if the control information load in the cell is heavy in some cases, the base station can receive HARQ-ACK based on this method, and send it as the K1 information field. After having the first DCI with the first value, there is no need to issue a DCI to specifically trigger HARQ-ACK feedback, thereby realizing resource scheduling for HARQ-ACK transmission and reducing scheduling signaling overhead.

The sending HARQ-ACK in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot may include at least one of the following:

Sending the HARQ-ACK in the Nth time slot after the PDSCH resource;

Sending the HARQ-ACK in the time slot after the Nth time slot after the PDSCH resource;

Sending the HARQ-ACK in the Nth time slot after the PDSCH resource and the time slot after the Nth time slot;

Wherein, the HARQ-ACK is feedback information of downlink data sent by the PDSCH resource of the first DCI.

Sending the HARQ-ACK in the Nth time slot and/or the time slot after the Nth time slot after using the PDSCH resources may include: after the Nth time slot and/or the Nth time slot The HARQ-ACK is sent one or more times in the time slot.

Specifically, the HARQ-ACK is sent by using the PUCCH resource of the Nth time slot and/or the time slot after the Nth time slot after the PDSCH resource.

PUCCH resources are communication resources allocated to PUCCH to transmit various data.

One or more PUCCH resource sets are configured in a time slot, and the UE can select one or more PUCCH resource sets from the Nth time slot after the PDSCH resource and/or the PUCCH resource set on the time slot after the Nth time slot. The HARQ-ACK is sent by two PUCCH resources. For example, in some embodiments, the method further includes: according to the PRI included in the first DCI, in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot Determine the PUCCH resource for sending the HARQ-ACK.

The PRI will carry the identification (ID) of the PUCCH resource. When it is determined that the HARQ-in the Nth time slot after the PDSCH resource and/or one or more time slots after the Nth time slot is determined to have the HARQ- In the ACK transmission opportunity, each time slot can be configured with multiple PUCCH resources. The PUCCH resource ID carried by the PRI, and the PUCCH resource ID indicates which PUCCH resource on the corresponding time slot is used to send the HARQ-ACK.

In this way, even if the K1 information field in the first DCI carries the first value, the PRI information field contained in the first DCI is still a valid information field and can be used to indicate PUCCH resources, reducing the amount of information in the PRI information field in the first DCI. Contains waste of bits.

In some embodiments, the method further includes:

When receiving the second DCI with the second value in the K1 information field in the N time slots after the PDSCH resource, it is based on the K1 information field contained in the second DCI and the physical uplink control channel resource indicator (PUCCH Resource Indicator, PRI). ) Information field to determine the PUCCH resource for sending HARQ-ACK;

Sending the HARQ-ACK on the determined PUCCH resource.

In this way, the base station can determine whether to schedule the PUCCH resource carrying HARQ-ACK through the second DCI carrying the second value in the K1 information field according to the urgency of receiving HARQ-ACK and/or the amount of downlink scheduling signaling. Or the UE and the base station respectively determine the PUCCH resource for receiving HARQ-ACK according to the foregoing method.

In some embodiments, as shown in FIG. 3, the S120 may include step S121; the S121 may include: sending the said PDSCH resource in M time slots starting from the Nth time slot after the PDSCH resource HARQ-ACK; wherein, the M is a positive integer.

The M can be any positive integer. When M is equal to 1, the UE only sends HARQ-ACK on the Nth time slot after the PDSCH resource. If M is equal to 2, the UE can only send the HARQ-ACK on the Nth time slot after the PDSCH resource. HARQ-ACK is sent in the first 2 time slots of the time slot.

The value of M can be any positive integer, and specifically can be 2, 3, or 4, etc.

When M is greater than or equal to 2, the UE has multiple opportunities to transmit HARQ-ACK, reducing the HARQ caused when the UE does not occupy an unlicensed spectrum channel on only one transmission opportunity based on Listen Before Talk (LBT) -The phenomenon that ACK cannot be sent improves the probability of successful HARQ-ACK transmission.

In some embodiments, the M timeslots may be consecutive M timeslots; at this time, the timeslots that the UE may select for sending the HARQ-ACK include: the Nth timeslot after the PDSCH resource to The N+M-1th time slot. Using continuous M time slots can make HARQ-ACK feedback to the base station possible quickly.

In other embodiments, the M time slots are distributed at intervals. This interval may be a periodic interval. That is, the M time slots may be: M time slots distributed periodically. At this time, the time slots that the UE can select for sending HARQ-ACK include: the Mth time slot and the N+S*m-1th time slot after the PDSCH resource. S is a periodically spaced interval time slot. M is a positive integer less than or equal to M. The M time slots are distributed at intervals, so that the M time slots are discretized in the time domain, and the wireless environment at different time points is different, which can improve the success probability of the UE occupying the channel of the unlicensed spectrum based on the LBT.

In some embodiments, as shown in FIG. 3, the method further includes:

S100: Receive high-level signaling, where the high-level signaling includes indication information indicating the N and/or the M.

The high-level signaling here may be any signaling above the physical layer, for example, radio resource control (Radio Resource Control, RRC) signaling.

N and M are configured in high-level signaling. In this way, the base station can issue N and/or M to enable the UE to maintain consistency with the base station's determination of PUCCH resources when selecting PUCCH resources for sending HARQ-ACK.

. In some embodiments, the high-layer signaling may be high-layer signaling sent before the first DCI. In this way, it can be ensured that the UE accurately selects the PUCCH resource for sending HARQ-ACK in the time slot in the Nth time slot and/or the time slot after the Nth time slot, and avoids high-level signaling from sending high-level signaling in the Nth time slot. As a result, the UE misses the time slot for sending HARQ-ACK due to lack of selection parameters such as N and/or M, ensuring that the UE can successfully select the time slot for sending HARQ-ACK.

In some embodiments, the higher layer signaling may also include the aforementioned periodic interval S.

In some other embodiments, the aforementioned N, M, and S may all be determined separately according to a selection strategy known to both the base station and the UE. The selection strategy may be to write a communication protocol, or to broadcast based on Main System Information (MSI). There are many ways to determine any one of the aforementioned N, M, and S, which will not be listed here.

In some embodiments, the Nth time slot is located after an end symbol, where the end symbol is: a symbol corresponding to the end of demodulation of downlink data sent by the PDSCH resource.

When the UE receives the downlink data sent by the PDSCH resource, it needs a certain period of time to demodulate the downlink data.

For example, the UE needs one or more symbols to demodulate the downlink data. The time slot after one or more symbols after the PDSCH resource can be set as the Nth time slot.

Setting the Nth time slot after the end symbol can reduce the HARQ-ACK transmission error or transmission omission caused by the PUCCH resource for sending the HARQ-ACK before the downlink data is demodulated.

As shown in FIG. 4, this embodiment provides a HARQ-ACK transmission method, which is applied to a base station and includes:

S210: Issue a first DCI for scheduling PDSCH resources on an unlicensed channel; wherein, the first DCI includes a K1 information field;

S220: When the K1 information field included in the first DCI carries the first value, and the second DCI carrying the second value is not issued in N time slots after the PDSCH resource, HARQ-ACK is received in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value is different from the first value Value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.

In the embodiment of this application, the base station and the UE use the same method to determine the PUCCH resource of the HARQ-ACK for the UE to send the downlink data without sending the second DCI with the second value in the K1 information field, and then the corresponding Receiving the HARQ-ACK on the PUCCH resource of. In this way, the signaling overhead and load of the PUCCH resource for scheduling and transmitting HARQ-ACK by the base station are reduced.

In some embodiments, as shown in FIG. 5, the S220 may include S221; the S221 may include:

Receive the HARQ-ACK in M time slots starting from the Nth time slot after the PDSCH resource; wherein, the M is a positive integer.

The UE may send HARQ-ACK one or more times in M time slots starting from the Nth time slot. The UE needs to monitor the channel before sending HARQ-ACK information. If the channel is busy, the UE cannot send HARQ-ACK information. Therefore, if M time slots are configured, the UE will have the opportunity to send HARQ-ACK multiple times to ensure that the base station successfully receives the HARQ-ACK corresponding to the UE.

In some embodiments, the M time slots may be consecutive M time slots; or, the M time slots may be: M time slots distributed periodically.

For example, as shown in Figure 5, the method further includes:

S200 may include: issuing high-layer signaling, where the high-layer signaling includes indication information indicating the N and/or the M.

In some embodiments, the Nth time slot is located after the end symbol, where the end symbol is: the symbol corresponding to the end of the demodulation of the downlink data sent by the PDSCH resource, which can prevent the UE from not completing the downlink data The demodulation of the selected PUCCH resource for transmitting HARQ-ACK has started.

As shown in FIG. 6, this embodiment provides a hybrid automatic repeat request response HARQ-ACK transmission device, which is applied to user equipment UE, and includes:

The first receiving module 610 is configured to receive first downlink control information DCI for scheduling physical downlink shared channel PDSCH resources on an unlicensed channel; it is characterized in that the first DCI includes a time domain offset K1 information field;

The first sending module 620 is configured to, when the time domain offset information field included in the first DCI carries the first value, and the information carrying the PDSCH resource is not received in N time slots after the PDSCH resource When the second DCI of the second value is used, HARQ-ACK is sent in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, so The second value is different from the first value.

In some embodiments, the method further includes:

According to the PRI included in the first DCI, the PUCCH resource for receiving the HARQ-ACK is determined in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot.

The PRI will carry the identification (ID) of the PUCCH resource. When it is determined that the HARQ-in the Nth time slot after the PDSCH resource and/or one or more time slots after the Nth time slot is determined to have the HARQ- In the ACK transmission opportunity, each time slot can be configured with multiple PUCCH resources. The PUCCH resource ID carried by the PRI indicates which PUCCH resource on the corresponding time slot is used to send the HARQ-ACK. In this way, the base station and the UE may determine to transmit and receive the HARQ-ACK on the same PUCCH resource based on the first DCI and the method of determining the time slot.

In some embodiments, the first receiving module 610 and the first sending module 620 may both be program modules; the program modules can realize the functions of the above-mentioned modules after being executed by the processor.

In some embodiments, the first receiving module 610 and the first sending module 620 may both be a combination of software and hardware; the combination of software and hardware includes, but is not limited to: a field programmable array or a complex programmable array.

In some embodiments, the first receiving module 610 and the first sending module 620 may both be pure hardware modules; the pure hardware modules include but are not limited to application specific integrated circuits.

In some embodiments, the first sending module 620 is configured to send HARQ-ACK in M time slots starting from the Nth time slot after the PDSCH resource; the M is a positive integer.

In some embodiments, the first receiving module 610 is further configured to receive high-level signaling, where the high-level signaling carries the N and/or the M.

In some embodiments, the device further includes:

The first determining module is configured to determine to send the HARQ in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot according to the PRI included in the first DCI -PUCCH resource of ACK.

As shown in FIG. 7, this embodiment provides a hybrid automatic repeat request response HARQ-ACK transmission device, which is applied in a base station, and includes:

The second sending module 710 is configured to issue the first downlink control information DCI for scheduling physical downlink shared channel PDSCH resources on the unlicensed channel; it is characterized in that the first DCI includes a time domain offset information field;

The second receiving module 720 is configured to, when the time domain offset information field included in the first DCI carries the first value, and does not send the data in the N time slots after the PDSCH resource When the second DCI of the second value is used, HARQ-ACK is received in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, so The second value is different from the first value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.

In some embodiments, the second receiving module 720 and the second sending module 710 may both be program modules; the program modules can realize the functions of the above-mentioned modules after being executed by the processor.

In some embodiments, the second receiving module 720 and the second sending module 710 may both be a combination of software and hardware; the combination of software and hardware includes, but is not limited to: a field programmable array or a complex programmable array.

In some embodiments, the second receiving module 720 and the second sending module 710 may both be pure hardware modules; the pure hardware modules include but are not limited to application specific integrated circuits.

In some embodiments, the second receiving module 720 is configured to receive the HARQ-ACK in M time slots starting from the Nth time slot after the PDSCH resource;

The M is a positive integer.

The second sending module 710 is also used to deliver high-level signaling, where the high-level signaling carries the N and/or the M.

In some embodiments, the device further includes:

The second determining module is configured to determine to receive the HARQ in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot according to the PRI included in the first DCI -PUCCH resource of ACK.

Two specific examples are provided below in conjunction with any of the foregoing embodiments:

Example 1:

When the K1 information field in the DCI for scheduling PDSCH resources is non-numeric, it is normal if the UE still does not receive the scheduled PDSCH resource and contains the K1 information field within N time slots after the time slot to which the PDSCH resource belongs. With a numerical value of DCI, the UE will try to send the HARQ-ACK corresponding to the non-value K1 PDSCH on the last Nth time slot of the PDSCH resource.

Its PUCCH resource ID is indicated by the DCI indicating a non-value K1. In order to reduce the situation that the UE cannot send HARQ-ACK due to the unsuccessful LBT, the UE can also try one or more time slots after the Nth time slot and the Nth time slot, corresponding to the same PUCCH in different time slots The HARQ-ACK is sent multiple times on the resource.

The Nth time slot and one or more time slots after the Nth time slot may be consecutive M time slots, or may be periodically spaced M time slots. When the UE succeeds in a certain transmission or the M transmission opportunities are over, the UE will stop sending HARQ-ACK of the downlink data of the PDSCH resource corresponding to the non-numerical K1 information field.

The above values of N and M are configured by the base station high-level signaling. The Nth time slot is after the end symbol that needs to ensure that the demodulation can be completed within the period after the PDSCH resource is guaranteed to ensure that the demodulation of the downlink data sent by the PDSCH resource is completed.

Example 2:

On the basis of example 1, the method provided in this example, if the UE cannot send HARQ-ACK due to unsuccessful LBT, the UE can try the Nth time slot and the following time slots, corresponding to the same in different time slots The HARQ-ACK is sent multiple times on the PUCCH resource, so that the UE has the opportunity to transmit the HARQ-ACK multiple times, which increases the probability of successful HARQ-ACK transmission.

In the above-mentioned improved solution, the different time slots may be consecutive M time slots or periodically spaced M time slots. The advantage of using consecutive M time slots is that HARQ-ACCK can be transmitted in the shortest possible time. The advantage of using periodically spaced M time slots is: there is a certain interval between different transmission opportunities, so the interference in the surrounding wireless environment will be different, which can increase the probability of LBT success, and HARQ can be transmitted only after the success of LBT -ACK. An example value, M=4.

The embodiments of the present disclosure provide a communication device, which includes:

antenna;

Memory

The processor is respectively connected to the antenna and the memory, and is used to control the wireless signal transmission and reception of the antenna by executing computer executable instructions stored on the memory, and implement the HARQ-ACK transmission method provided by any of the foregoing technical solutions For example, at least one of the methods shown in FIGS. 2 to 5 is executed.

The embodiments of the present disclosure provide a computer non-transitory storage medium, wherein the computer non-transitory storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the HARQ- provided by any of the foregoing technical solutions can be implemented. The ACK transmission method, for example, executes at least one of the methods shown in FIGS. 2 to 5.

Fig. 8 shows a UE according to an exemplary embodiment. The UE may specifically be a mobile phone, a computer, a digital broadcasting UE, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

8, UE 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and Communication component 816.

The processing component 802 generally controls the overall operations of the UE 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the foregoing method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations in the UE 800. Examples of these data include instructions for any application or method operating on the UE800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable and Programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

The power component 806 provides power for various components of the UE 800. The power component 806 may include a power management system, one or more power supplies, and other components associated with the generation, management, and distribution of power for the UE 800.

The multimedia component 808 includes a screen that provides an output interface between the UE 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor can not only sense the boundary of the touch or slide action, but also detect the duration and pressure related to the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When UE800 is in an operating mode, such as shooting mode or video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the UE 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio signals. The received audio signal may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module. The peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.

The sensor component 814 includes one or more sensors for providing UE800 with various aspects of status assessment. For example, the sensor component 814 can detect the on/off status of the UE800 and the relative positioning of components, such as the display and keypad of the UE800. The sensor component 814 can also detect the position change of the UE800 or a component of the UE800. Presence or absence, UE800 orientation or acceleration/deceleration and UE800 temperature changes. The sensor component 814 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact. The sensor component 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate wired or wireless communication between the UE 800 and other devices. UE 800 can access a wireless network based on communication standards, such as Wi-Fi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, UE800 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gates Array (FPGA), controller, microcontroller, microprocessor or other electronic components are implemented to implement the above methods.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, for example, the memory 804 including instructions, and the foregoing instructions may be executed by the processor 820 of the UE 800 to complete the foregoing method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and so on.

Figure 9 is a schematic diagram of a base station. 9, the base station 900 includes a processing component 922, which further includes one or more processors, and a memory resource represented by a memory 932, for storing instructions executable by the processing component 922, such as application programs. The application program stored in the memory 932 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 922 is configured to execute instructions to execute the PDCCH monitoring method shown in FIG. 4 and/or FIG. 5.

The base station 900 may also include a power supply component 926 configured to perform power management of the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to the network, and an input output (I/O) interface 958. The base station 900 can operate based on an operating system stored in the storage 932, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, Free BSDTM or the like.

Those skilled in the art will easily think of other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptive changes of this application. These variations, uses, or adaptive changes follow the general principles of this application and include common knowledge or customary technical means in the technical field that are not disclosed in this application. . The description and embodiments are only regarded as exemplary, and the true scope and spirit of the application are pointed out by the following claims.

It should be understood that the present application is not limited to the precise structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the application is only limited by the appended claims.

Claims

A method for hybrid automatic repeat request response HARQ-ACK transmission, which is characterized in that it is applied to user equipment UE and includes:

Receiving first downlink control information DCI for scheduling physical downlink shared channel PDSCH resources on an unlicensed channel; wherein the first DCI includes a time domain offset information field;

When the time domain offset information field included in the first DCI carries the first value, and the second DCI carrying the second value is not received in N time slots after the PDSCH resource , Sending HARQ-ACK in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value is different from the The first value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.
The method according to claim 1, wherein the sending HARQ-ACK in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot comprises:

Send the HARQ-ACK in M time slots starting from the Nth time slot after the PDSCH resource; the M is a positive integer.
The method of claim 2, wherein:

The M time slots may be consecutive M time slots;

or,

The M time slots may be: M time slots distributed periodically.
The method according to claim 2 or 3, wherein the method further comprises:

Receiving high-layer signaling, characterized in that the high-layer signaling includes indication information indicating the N and/or the M.
The method according to any one of claims 1 to 3, wherein the Nth time slot is located after an end symbol, wherein the end symbol is: the end of the demodulation of the downlink data sent by the PDSCH resource Corresponding symbol.
The method according to any one of claims 1 to 3, wherein the method further comprises:

According to the physical downlink control channel PUCCH resource indication information field included in the first DCI, it is determined to send the HARQ in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot. -PUCCH resource of ACK.
A hybrid automatic repeat request response HARQ-ACK transmission method is characterized in that it is applied to a base station and includes:

Issuing the first downlink control information DCI for scheduling physical downlink shared channel PDSCH resources on an unlicensed channel; wherein the first DCI includes a time domain offset information field;

When the time domain offset information field included in the first DCI carries the first value, and the second DCI carrying the second value is not issued in N time slots after the PDSCH resource , Receiving HARQ-ACK in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value is different from the The first value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.
The method according to claim 7, wherein the receiving HARQ-ACK in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot comprises:

Receive the HARQ-ACK in M time slots starting from the Nth time slot after the PDSCH resource; the M is a positive integer.
The method according to claim 8, wherein:

The M time slots may be consecutive M time slots;

or,

The M time slots may be: M time slots distributed periodically.
The method according to any one of claims 7 to 9, wherein the method further comprises:

Sending high-layer signaling, characterized in that the high-layer signaling includes indication information indicating the N and/or the M.
The method according to any one of claims 7 to 9, wherein the Nth time slot is located after an end symbol, wherein the end symbol is: the downlink data sent by the PDSCH resource is demodulated until the end Corresponding symbol.
The method according to any one of claims 7 to 9, wherein the method further comprises:

According to the physical downlink control channel PUCCH resource indication information field included in the first DCI, it is determined to receive the HARQ in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot -PUCCH resource of ACK.
A hybrid automatic repeat request response HARQ-ACK transmission device is characterized in that it is applied to user equipment UE and includes:

The first receiving module is configured to receive first downlink control information DCI for scheduling physical downlink shared channel PDSCH resources on an unlicensed channel; wherein the first DCI includes a time domain offset K1 information field;

The first sending module is configured to, when the time domain offset information field included in the first DCI carries the first value, and the first value is not received in N time slots after the PDSCH resource When the second DCI takes two values, HARQ-ACK is sent in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and The second value is different from the first value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.
The apparatus according to claim 13, wherein the first sending module is configured to send the HARQ-ACK in M time slots starting from the Nth time slot after the PDSCH resource ; It is characterized in that the M is a positive integer.
The device of claim 14, wherein:

The M time slots may be consecutive M time slots;

or,

The M time slots may be: M time slots distributed periodically.
The apparatus according to any one of claims 13 to 15, wherein the Nth time slot is located after an end symbol, wherein the end symbol is: the end of the demodulation of the downlink data sent by the PDSCH resource Corresponding symbol.
The device according to any one of claims 13 to 15, wherein the device further comprises:

The first determining module is configured to, according to the physical downlink control channel PUCCH resource indication information field included in the first DCI, in the Nth time slot after the PDSCH resource and/or after the Nth time slot The PUCCH resource for transmitting the HARQ-ACK is determined on the time slot.
A hybrid automatic repeat request response HARQ-ACK transmission device is characterized in that it is applied to a base station and includes:

The second sending module is configured to deliver the first downlink control information DCI for scheduling physical downlink shared channel PDSCH resources on the unlicensed channel; the first DCI is characterized in that the first DCI includes a time domain offset information field;

The second receiving module is configured to, when the K1 information field included in the first DCI carries the first value, and does not deliver the second value in the N time slots after the PDSCH resource In the second DCI, HARQ-ACK is received in the Nth time slot after the PDSCH resource and/or the time slot after the Nth time slot, where N is a positive integer, and the second value Different from the first value; the HARQ-ACK is feedback information of downlink data transmitted by the PDSCH resource scheduled by the first DCI.
The apparatus according to claim 18, wherein the second receiving module is configured to receive the HARQ- ACK; characterized in that the M is a positive integer.
The device according to claim 18 or 19, wherein the device further comprises:

The second determining module is configured to, according to the physical downlink control channel PUCCH resource indication information field included in the first DCI, in the Nth time slot after the PDSCH resource and/or after the Nth time slot The PUCCH resource for receiving the HARQ-ACK is determined on the time slot.
A communication device, characterized in that it comprises:

antenna,

Memory

The processor is respectively connected to the antenna and the memory, and is configured to control the transmission and reception of wireless signals of the antenna by executing computer-executable instructions stored on the memory, and can implement the foregoing claims 1 to The method provided by any one of 6 or 7 to 12.