CN113767583A

CN113767583A - Unauthorized frequency band feedback information transmission method, device and storage medium

Info

Publication number: CN113767583A
Application number: CN202080000736.2A
Authority: CN
Inventors: 董贤东
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-12-07
Anticipated expiration: 2040-04-07
Also published as: CN113767583B; WO2021203246A1

Abstract

The disclosure relates to an unlicensed frequency band feedback information transmission method, an unlicensed frequency band feedback information transmission device and a storage medium. The method for transmitting the feedback information of the unauthorized frequency band is applied to a terminal and comprises the following steps: determining hybrid automatic repeat request response information HARQ-ACK information of a first physical downlink shared channel; and in response to that the physical uplink control channel resource which feeds back the hybrid automatic repeat request response information of the first physical downlink shared channel and the physical uplink control channel resource which feeds back the one-time hybrid automatic repeat request response feedback information of one or more second physical downlink shared channels are in the same time domain resource unit, sending the hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit. The method and the device realize that the hybrid automatic repeat request response information of the first physical downlink shared channel is sent in the time domain resource unit which is scheduled to carry out the one-time hybrid automatic repeat request response feedback information.

Description

Unauthorized frequency band feedback information transmission method, device and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting unauthorized frequency band feedback information, and a storage medium.

Background

In New Radio (NR) technology, a Hybrid automatic repeat request (HARQ) feedback retransmission mechanism is supported.

In the standard discussion and design of NR-Unlicensed spectrum (NR-U), for feedback of hybrid automatic repeat request Acknowledgement (HARQ-ACK) information, an enhanced dynamic HARQ-ACK (HARQ-ACK feedback) feedback mode and a one-shot HARQ-ACK (HARQ-ACK feedback) feedback mode are mainly used. In the related art, if the terminal is scheduled to perform one-shot HARQ-ACK feedback and enhanced dynamic HARQ-ACK feedback in the same time slot, the terminal will only feed back the one-shot HARQ-ACK codebook and not feed back the enhanced dynamic HARQ-ACK codebook.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a method, an apparatus, and a storage medium for transmitting feedback information of an unlicensed frequency band.

According to a first aspect of the embodiments of the present disclosure, there is provided a method for transmitting feedback information of an unlicensed frequency band, which is applied to a terminal, and includes: determining hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of a first physical downlink shared channel; and in response to that the physical uplink control channel resource which feeds back the hybrid automatic repeat request response information of the first physical downlink shared channel and the physical uplink control channel resource which feeds back the one-time hybrid automatic repeat request response information of one or more second physical downlink shared channels are in the same time domain resource unit, sending the hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit.

In one embodiment, the sending hybrid automatic repeat request acknowledgement information of the first physical downlink shared channel in the time domain resource unit includes: and sending hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit by using the enhanced dynamic feedback codebook in the physical uplink control channel resource indicated by the downlink control information.

In another embodiment, the method for transmitting the feedback information of the unlicensed frequency band according to the embodiment of the present disclosure further includes: and sending the one-time HARQ-ACK information of the one or more second physical downlink shared channels in the time domain resource unit.

In another embodiment, the priority of the harq feedback information of the first pdcch is higher than the priority of the harq feedback information of the one or more second pdcchs.

In yet another embodiment, a time difference between an ending time of the first pdcch and a starting time of a pdcch carrying the one-time harq feedback information codebook is smaller than a first duration.

In another embodiment, the first duration is a minimum duration agreed by a protocol for demodulating a physical downlink shared channel and generating harq response information.

In yet another embodiment, the time domain resource unit includes a slot or a subslot.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for transmitting feedback information of an unlicensed frequency band, which is applied to a network device, and includes:

sending a first physical downlink shared channel; and in response to that the physical uplink control channel resource which feeds back the hybrid automatic repeat request response information of the first physical downlink shared channel and the physical uplink control channel resource which feeds back the one-time hybrid automatic repeat request response feedback information of one or more second physical downlink shared channels are in the same time domain resource unit, receiving the hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit.

In one embodiment, receiving harq response information of the first pdcch in the time domain resource unit includes: and receiving hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit by using the enhanced dynamic feedback codebook in the physical uplink control channel resource indicated by the downlink control information.

In another embodiment, the method for transmitting the feedback information of the unlicensed frequency band further includes: and receiving the one-time HARQ-ACK information of the one or more second physical downlink shared channels in the time domain resource unit.

In another embodiment, the terminal receives the end time of the first physical downlink shared channel, and the time difference between the end time of the first physical downlink shared channel and the start time of the physical uplink control channel carrying the one-time hybrid automatic repeat request response feedback information codebook is smaller than the first duration.

According to a third aspect of the embodiments of the present disclosure, there is provided an apparatus for transmitting feedback information of an unlicensed frequency band, which is applied to a terminal, and includes: a determining unit configured to determine hybrid automatic repeat request acknowledgement (HARQ-ACK) information of a first physical downlink shared channel; a sending unit, configured to send hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit in response to that physical uplink control channel resources feeding back hybrid automatic repeat request response information of the first physical downlink shared channel and physical uplink control channel resources feeding back one-time hybrid automatic repeat request response feedback information of one or more second physical downlink shared channels are in the same time domain resource unit.

In one embodiment, the sending unit sends the harq response information of the first pdcch in the time domain resource unit using an enhanced dynamic feedback codebook on the physical uplink control channel resource indicated by the downlink control information.

In another embodiment, the sending unit is further configured to send the one-time HARQ-ACK information of the one or more second physical downlink shared channels in the time domain resource unit.

According to a fourth aspect of the embodiments of the present disclosure, there is provided an apparatus for transmitting feedback information of an unlicensed frequency band, which is applied to a network device, and includes: a transmitting unit configured to transmit a first physical downlink shared channel; a receiving unit, configured to receive, in a time domain resource unit, harq response information of the first pdcch in response to that a physical uplink control channel resource for feeding back harq response information of the first pdcch and a physical uplink control channel resource for feeding back one-time harq response feedback information of one or more second pdcchs are in the same time domain resource unit.

In one embodiment, the receiving unit receives harq response information of the first pdcch in the time domain resource unit using an enhanced dynamic feedback codebook for the pdcch resource indicated by the pdcch information.

In another embodiment, the receiving unit is further configured to: and receiving the one-time HARQ-ACK information of the one or more second physical downlink shared channels in the time domain resource unit.

According to a fifth aspect of the embodiments of the present disclosure, there is provided an apparatus for transmitting feedback information of an unlicensed frequency band, including:

a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the method for transmitting the unlicensed frequency band feedback information according to the first aspect or any implementation manner of the first aspect is implemented.

According to a sixth aspect of the embodiments of the present disclosure, there is provided an apparatus for transmitting feedback information of an unlicensed frequency band, including:

a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to: the second aspect or the unlicensed frequency band feedback information transmission method according to any one of the embodiments of the second aspect is implemented.

According to a seventh aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, where instructions in the storage medium, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the first aspect or the unlicensed frequency band feedback information transmission method described in any one of the implementation manners of the first aspect.

According to an eighth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, where instructions in the storage medium, when executed by a processor of a network device, enable the network device to implement the unlicensed frequency band feedback information transmission method according to any one of the second aspect or the second aspect.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the hybrid automatic repeat request response information of the first physical downlink shared channel and the one-time hybrid automatic repeat request response feedback information of one or more second physical downlink shared channels are in the same time domain resource unit, the hybrid automatic repeat request response information of the first physical downlink shared channel is sent, and the hybrid automatic repeat request response information of the first physical downlink shared channel is sent in the time domain resource unit for scheduling the one-time hybrid automatic repeat request response feedback information.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a diagram illustrating a communication system architecture in accordance with an exemplary embodiment.

Fig. 2 is a diagram illustrating One-shot HARQ-ACK codebook transmission according to an example embodiment.

Fig. 3 is a flowchart illustrating a method of transmitting feedback information in an NR-U according to an exemplary embodiment.

Fig. 4 shows a schematic diagram of feeding back one-slot HARQ-ACK codebook and enhanced dynamic HARQ-ACK codebook in the same slot in an exemplary embodiment of the present disclosure.

Fig. 5 is a flowchart illustrating a method of transmitting feedback information in an NR-U according to an exemplary embodiment.

Fig. 6 is a block diagram illustrating an NR-U feedback information transmitting apparatus according to an exemplary embodiment.

Fig. 7 is a block diagram illustrating an NR-U feedback information transmitting apparatus according to an exemplary embodiment.

Fig. 8 is a block diagram illustrating an apparatus for NR-U feedback information transmission according to an example embodiment.

Fig. 9 is a block diagram illustrating an apparatus for NR-U feedback information transmission according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The feedback method provided by the embodiment of the present disclosure can be applied to the wireless communication system shown in fig. 1. Referring to fig. 1, the wireless communication system includes a terminal and a network device. The terminal is connected with the network equipment through wireless resources and transmits and receives data.

It is understood that the wireless communication system shown in fig. 1 is only a schematic illustration, and other network devices, such as a core network device, a wireless relay device, a wireless backhaul device, etc., may also be included in the wireless communication system, which is not shown in fig. 1. The number of network devices and the number of terminals included in the wireless communication system are not limited in the embodiments of the present disclosure.

It is further understood that the wireless communication system of the embodiments of the present disclosure is a network providing wireless communication functions. Wireless communication systems may employ different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single Carrier FDMA (SC-FDMA), Carrier Sense Multiple Access with Collision Avoidance (Carrier Sense Multiple Access). Networks can be classified into 2G (english: generation) networks, 3G networks, 4G networks or future evolution networks, such as 5G networks, according to factors such as capacity, rate and delay of different networks, and the 5G networks can also be referred to as New Radio Networks (NR). For ease of description, this disclosure will sometimes simply refer to a wireless communication network as a network.

Further, the network devices referred to in this disclosure may also be referred to as radio access network devices. The radio access network device may be: a base station, an evolved node B (enb), a home base station, an Access Point (AP), a wireless relay node, a wireless backhaul node, a Transmission Point (TP), a Transmission and Reception Point (TRP) in a wireless fidelity (WIFI) system, and the like, and may also be a gNB in an NR system, or may also be a component or a part of a device constituting the base station. When a vehicle networking (V2X) communication system, the network device may also be a vehicle-mounted device. It should be understood that, in the embodiments of the present disclosure, the specific technology and the specific device form adopted by the network device are not limited.

Further, the Terminal referred to in this disclosure may also be referred to as a Terminal device, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like, and is a device that provides voice and/or data connectivity to a User, for example, the Terminal may be a handheld device having a wireless connection function, a vehicle-mounted device, and the like. Currently, some examples of terminals are: a smart Phone (Mobile Phone), a Pocket Computer (PPC), a palm top Computer, a Personal Digital Assistant (PDA), a notebook Computer, a tablet Computer, a wearable device, or a vehicle-mounted device, etc. Furthermore, when being a communication system of the internet of vehicles (V2X), the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technologies and the specific device forms adopted by the terminal.

In fig. 1, a terminal communicates with a network device, and a process of sending data to the network device by the terminal may be referred to as uplink transmission. The process of sending data to the terminal by the network device may be referred to as downlink transmission. In the uplink transmission and downlink transmission processes of the terminal and the network equipment, the HARQ feedback technology is adopted to ensure the reliability of transmission.

In the standard discussion and design of R16NR-U, 2 feedback modes are designed and passed for the feedback of HARQ-ACK information. One is an enhanced dynamic HARQ-ACK feedback method, which is basically the same as dynamic HARQ-ACK codebook (dynamic HARQ-ACK codebook) feedback of NR Release 15. Downlink Control Information (DCI) for scheduling a Physical Downlink Shared Channel (PDSCH) specifies a Physical Uplink Control Channel (PUCCH) resource for carrying HARQ-ACK information of the PDSCH through a PUCCH Resource Indicator (PRI)/K1/Transmit Power Control (TPC) field. K1 represents the slot number of the interval between the slot where the PDSCH is located and the slot where the corresponding HARQ-ACK information is located. 1bit in the DCI is used for indicating the group number of the PDSCH scheduled by the DCI, and the HARQ-ACK of the PDSCH of different groups correspond to different HARQ-ACK codebooks. The DCI scheduled PDSCH includes 2 groups of PDSCH. The enhanced dynamic HARQ-ACK feedback approach may specify PUCCH resources for one or more scheduled PDSCHs without generating additional information transmission overhead (overhead), and is therefore suitable for a situation where a single PDSCH needs to be fed back quickly in time.

The other is a one-slot HARQ-ACK feedback mode. The one-time HARQ-ACK feedback is a semi-static feedback mode, and the terminal needs to feed back HARQ-ACK information of all configured HARQ processes (including actually scheduled HARQ processes and non-scheduled HARQ processes) at one time. For example, if the network device configures 16 HARQ processes for the terminal, if the terminal is triggered to feed back one-shot HARQ-ACK information, the terminal needs to feed back HARQ-ACK information of all 16 processes. If there is an HARQ process that is not scheduled, the terminal will feed back HARQ-ACK information corresponding to the last time the process was used, or a default value (e.g., non-acknowledgement (NACK)). Wherein, the network device may configure to feed back HARQ-ACK information corresponding to the last time of being used, or feed back a default value. For a terminal configured with a one-slot HARQ-ACK feedback mode, a 1-bit information field in DCI (downlink control information) sent to a terminal scheduling PDSCH (physical downlink shared channel) is used for judging whether to trigger one-slot HARQ-ACK feedback.

The corresponding PDSCH contained in the One-shot HARQ-ACK codebook is all unrefed PDSCHs before a certain duration T (the shortest time for PDSCH demodulation and HARQ-ACK preparation, defined in 3gpp TS 38.214) before the PUCCH channel carrying the One-shot HARQ-ACK codebook. As shown in fig. 2. Assume that under certain configuration conditions, T ═ 4.5 symbols. The PUCCH channel carrying the One-shot HARQ-ACK codebook is on symbol 2/3 of slot 2(slot 2). Then the PDSCH not fed back with HARQ-ACK before the T duration of symbol 2, for example, PDSCH1/2/3 in the figure, feeds back HARQ-ACK information in the one-shot codebook. The One-shot HARQ-ACK feedback method is suitable for the case of collectively feeding back a plurality of PDSCHs (less than or equal to the total number of HARQ processes) because all HARQ processes need to be fed back at One time, otherwise, a large information overhead occurs.

In 5G NR, a terminal concurrently supports a high Reliable Low Latency Communications (URLLC) service type and an enhanced Mobile bandwidth Broadband (eMBB) service type. URLLC traffic is a type of traffic that requires high reliability and low latency. The eMBB service does not require as high reliability and low latency, but requires a large data transmission rate.

For URLLC service, it is desirable to transmit its HARQ-ACK information as fast as possible, and reduce the time delay from PDSCH to HARQ-ACK feedback, so as to reduce the overall data transmission time delay. For the eMBB service, the HARQ-ACK feedback does not strictly require low time delay, and HARQ-ACK information of a plurality of PDSCHs in the front and at the back of the time domain can be transmitted together in a centralized mode to improve the resource utilization efficiency.

For the same terminal, it is a common scenario that there are URLLC service and eMBB service at the same time. In order to support flexible multiplexing of two services, the HARQ-ACK codebook is divided into 2 different priorities, and a codebook with a high priority can obtain preferential transmission. For example, when two PUCCH channels carrying different priority HARQ-ACK information are overlapped in time domain, the HARQ-ACK information with high priority is transmitted, and the HARQ-ACK information with low priority is discarded. In the current upcoming R17 standard discussion, we will investigate how to deploy URLLC services on unlicensed spectrum. When the URLLC service is deployed on the unlicensed frequency band, in order to support flexible multiplexing with the eMBB service, 2 HARQ-ACK codebooks of different priorities should be supported as well.

However, there is an agreement in the NR-U protocol, if the terminal is scheduled to perform one-shot HARQ-ACK feedback and enhanced dynamic HARQ-ACK feedback in the same slot, the terminal will only feed back the one-shot HARQ-ACK codebook and not feed back the enhanced dynamic HARQ-ACK codebook. If the URLLC service is transmitted on the unlicensed frequency band, how to perform HARQ-ACK feedback on the PDSCH of the URLLC service that is bursty after triggering the one-shot HARQ-ACK codebook is a problem to be solved.

The embodiment of the disclosure provides a method for transmitting feedback information in an NR-U, when a terminal receives a PDSCH of which the priority of HARQ-ACK is indicated to be high priority, and the HARQ-ACK feedback PUCCH resources of the PDSCH and one-shot HARQ-ACK of other PDSCHs are in the same time domain resource unit, the HARQ-ACK information of the PDSCH is transmitted in the time domain resource unit, so that the HARQ-ACK information priority of the PDSCH is distinguished in the same time domain resource unit, and the HARQ-ACK information is transmitted.

For convenience of description, the PDSCH in which the HARQ-ACK information priority is designated as the high priority is referred to as a first PDSCH. And the PDSCH corresponding to the one-shot HARQ-ACK codebook is called a second PDSCH.

Fig. 3 is a flowchart illustrating a feedback information transmission method in an NR-U according to an exemplary embodiment, where the feedback information transmission method is used in a terminal, as shown in fig. 3, and includes the following steps.

In step S11, HARQ-ACK information for the first PDSCH is determined.

In step S12, in response to that the PUCCH resource feeding back the HARQ-ACK information of the first PDSCH and the PUCCH resource feeding back one-shot HARQ-ACK of one or more second PDSCHs are in the same time domain resource unit, the HARQ-ACK information of the first PDSCH is sent in the time domain resource unit.

In the embodiment of the present disclosure, the first PDSCH may be a dynamically scheduled PDSCH, or may be a Semi-Persistent Scheduling (SPS PDSCH).

Furthermore, in the embodiment of the present disclosure, the priority of the HARQ-ACK information of the first PDSCH is higher than the priority of the one-shot HARQ-ACK information of the second PDSCH. Wherein, the HARQ-ACK information of the first PDSCH may be indicated as high priority in the embodiments of the present disclosure. And the HARQ-ACK information of the first PDSCH is indicated to be in high priority, and the PUCCH resource which feeds back the HARQ-ACK information of the first PDSCH and the PUCCH resource which feeds back one-slot HARQ-ACK of one or more second PDSCHs are in the same time domain resource unit, and then the HARQ-ACK information of the first PDSCH is sent in the time domain resource unit which schedules the PUCCH resource of one-slot HARQ-ACK of one or more second PDSCHs.

Wherein, for the dynamically scheduled first PDSCH, the priority of the HARQ-ACK information of the first PDSCH can be indicated by the DCI. For example, for the enhanced dynamic HARQ-ACK feedback scheme, 1bit in the DCI is reused to indicate a PDSCH group number (PDSCH group ID), and priority information of the HARQ-ACK codebook is added in addition to the corresponding PDSCH group number. For example, when the PDSCH group ID is 1, it indicates that its corresponding HARQ-ACK has high priority. When the PDSCH group ID is 0, it indicates that its corresponding HARQ-ACK is of low priority. A new information field bit may also be used to prioritize the HARQ-ACK codebook corresponding to the PDSCH scheduled by the DCI.

For the semi-statically scheduled first PDSCH, the priority of HARQ-ACK information of the first PDSCH may be configured in configuration information of a (Radio Resource Control, RRC) layer.

In the embodiment of the present disclosure, when the first PDSCH is scheduled, PUCCH resources for feeding back HARQ-ACK information of the first PDSCH are usually indicated. Wherein, for the dynamically scheduled first PDSCH, PUCCH resources for feeding back HARQ-ACK information of the first PDSCH can be indicated by DCI. For example, PUCCH resources for feeding back HARQ-ACK information of the first PDSCH may be indicated by DCI indicating priority of HARQ-ACK information of the first PDSCH. For the semi-statically scheduled first PDSCH, PUCCH resources for feeding back HARQ-ACK information of the first PDSCH may be configured by configuration information of the RRC layer and indicated by the activation DCI. Wherein, activating DCI may be understood as DCI for activating a semi-static scheduling PDSCH.

In one mode in the embodiment of the present disclosure, when the HARQ-ACK information of the first PDSCH is sent, the HARQ-ACK information of the first PDSCH is sent on the PUCCH resource indicated by the DCI.

For a terminal operating in an NR-U, a network device may configure a feedback mode supporting enhanced dynamic HARQ-ACK for the terminal and configure a feedback mode supporting one-shot HARQ-ACK. If the PUCCH resource feeding back the HARQ-ACK information of the first PDSCH and the PUCCH resource feeding back one-shot HARQ-ACK of one or more second PDSCHs are in the same time domain resource unit, the terminal sends the HARQ-ACK information of the first PDSCH in the time domain resource unit. For example, the enhanced dynamic feedback codebook is used to transmit the HARQ-ACK information of the first PDSCH on the PUCCH resource indicated by the DCI.

It can be understood that, in the embodiment of the present disclosure, it is not limited that an enhanced dynamic feedback manner is necessarily used for the feedback manner of the HARQ-ACK information of the first PDSCH, and a one-slot HARQ-ACK manner may also be used.

The time domain resource unit referred to above in this embodiment of the present disclosure may be a slot, or may be a sub slot (subslot). In the embodiment of the present disclosure, a slot is taken as an example to be described below, it may be understood that the slot may also be a subslot in the example, and details are not repeated in the embodiment of the present disclosure.

In the disclosed embodiments, the first PDSCH corresponds to low latency traffic and the second PDSCH corresponds to high latency traffic. The low delay traffic and the high delay traffic are relative, that is, the requirement of the traffic corresponding to the first PDSCH for delay is higher than that of the traffic corresponding to the first PDSCH. For example: the service corresponding to the first PDSCH is URLLC service, and the service corresponding to the second PDSCH is eMBB service. Of course, this is merely an example, and the embodiments of the present disclosure do not limit the types of services.

In the embodiment of the disclosure, the priority of the HARQ-ACK information of the first PDSCH is higher than that of the second PDSCHHARQ-ACK information. For example: the service corresponding to the first PDSCH is URLLC service, and the service corresponding to the second PDSCH is eMBB service; of course, this is merely an example, and the embodiments of the present disclosure do not limit the types of services.

In the embodiment of the disclosure, in the unlicensed frequency band, the terminal may determine HARQ-ACK feedback information of the first PDSCH and determine HARQ-ACK feedback information of the second PDSCH. It can be appreciated that determining the HARQ-ACK feedback information for the first PDSCH and determining the HARQ-ACK feedback information for the second PDSCH are not limited in order. And the terminal sends the one-slot HARQ-ACK information of the one or more second PDSCHs and the HARQ-ACK information of the first PDSCH in a time domain resource unit of PUCCH resources for scheduling the one-slot HARQ-ACK of the one or more second PDSCHs.

In an example of the present disclosure, in an unlicensed frequency band, for a situation that one-shot HARQ-ACK feedback and enhanced dynamic HARQ-ACK feedback are triggered in a same slot. If the terminal is configured with the enhanced dynamic HARQ-ACK feedback and the one-slot HARQ-ACK feedback, it may be understood that, for the following case, the PUCCH resource for feeding back the HARQ-ACK information of the first PDSCH and the PUCCH resource for feeding back the one-slot HARQ-ACK of the one or more second PDSCHs are in the same time domain resource unit, and the terminal sends the HARQ-ACK information of the first PDSCH in the time domain resource unit. After the terminal is triggered to perform one-shot HARQ-ACK feedback on one or more second PDSCHs in one slot, the terminal receives a PDSCH (first PDSCH); wherein the priority of the HARQ-ACK of the first PDSCH is high priority, or the requirement of the first PDSCH on time delay is higher, or the priority is based on the setting of the first PDSCH and the second PDSCH in the standard; and the HARQ-ACK feedback PUCCH resources of the first PDSCH are also in the same slot, but the HARQ-ACK information of the first PDSCH cannot be carried in the one-slot HARQ-ACK codebook, and the terminal feeds back the HARQ-ACK information of the first PDSCH on the indicated PUCCH resources by using the enhanced dynamic HARQ-ACK codebook.

In the embodiment of the present disclosure, the HARQ-ACK information of the first PDSCH cannot be carried in the one-slot HARQ-ACK codebook, which may be understood as that a time difference between the end time of the first PDSCH and the start time of the PUCCH carrying the one-slot HARQ-ACK codebook is smaller than the first duration. In all embodiments of the present disclosure, the first time period is protocol-specified; or the first time length is determined by the UE and reported to the network equipment; or, the first duration is determined by the network device and sent to the terminal; or the first duration is determined by negotiation between the network equipment and the terminal; or the first duration is determined by the terminal and the network equipment through negotiation. In all embodiments of the present disclosure, the first time length is greater than or equal to a minimum time length for demodulating the PDSCH and generating HARQ-ACK information.

Fig. 4 shows a schematic diagram of feeding back one-slot HARQ-ACK codebook and enhanced dynamic HARQ-ACK codebook in the same slot in an exemplary embodiment of the present disclosure. Referring to fig. 4, the terminal triggers one-shot HARQ-ACK feedback of PDSCH1, PDSCH2 and PDSCH3 on PUCCH1 of slot2 in the scheduling DCI of PDSCH 3. However, the terminal receives PDSCH4 again later, and HARQ-ACK priority transmission of PDSCH4 (the priority of HARQ-ACK of PDSCH4 is high, or the requirement of PDSCH4 for latency is higher, or based on the setting of PDSCH4 and PDSCH1, PDSCH2, PDSCH3 in the standard), PUCCH resources carrying HARQ-ACK is indicated on PUCCH2 of slot 2. Since the PDSCH4 cannot satisfy the limitation of a specific duration T (illustrated in the figure, T ═ 4.5 symbols are taken as an example), that is, the terminal cannot carry the HARQ-ACK feedback information of the PDSCH4 into the one-shot HARQ-ACK codebook of the PUCCH1, but the HARQ-ACK priority of the PDSCH4 is indicated to be high, that is, the terminal needs to perform HARQ-ACK feedback on the PDSCH4 as soon as possible. By applying the feedback information transmission method provided by the embodiment of the disclosure, the terminal carries the HARQ-ACK information of the PDSCH4 on the PUCCH2 of slot2 and feeds the HARQ-ACK information back to the network equipment on the enhanced dynamic HARQ-ACK codebook.

In the embodiment of the disclosure, the first PDSCH is scheduled and sent by the network device to the terminal, and the terminal carries HARQ-ACK information of the first PDSCH on the enhanced dynamic HARQ-ACK codebook and feeds the information back to the network device. And the network equipment receives HARQ-ACK information of the first PDSCH fed back by the terminal.

Fig. 5 is a flowchart illustrating a method for transmitting feedback information in an NR-U according to an exemplary embodiment, where the method for transmitting feedback information is used in a network device, as shown in fig. 5, and includes the following steps.

In step S21, the first PDSCH is transmitted.

It is understood that the network device in the embodiment of the present disclosure may also transmit the second PDSCH. In all embodiments of the present disclosure, there is no restriction on the order between transmitting the first PDSCH and transmitting the second PDSCH; namely: the transmitting of the first PDSCH may be before the transmitting of the second PDSCH, may be after the transmitting of the first PDSCH, or may be simultaneously with the transmitting of the second PDSCH.

In step S22, in response to that the PUCCH resource feeding back the HARQ-ACK information of the first PDSCH and the PUCCH resource feeding back one-shot HARQ-ACK of one or more second PDSCHs are in the same time domain resource unit, the HARQ-ACK information of the first PDSCH is received in the time domain resource unit.

In the disclosed embodiment, the network device receives HARQ-ACK information of the first PDSCH on the indicated PUCCH resources using an enhanced dynamic HARQ-ACK codebook.

And the time difference between the ending time of the first PDSCH and the starting time of a PUCCH carrying a one-shot HARQ-ACK codebook is smaller than a first duration. In all embodiments of the present disclosure, the first time period is protocol-specified; or the first time length is determined by the UE and reported to the network equipment; or, the first duration is determined by the network equipment and sent to the UE; or the first duration is determined by negotiation between the base station and the UE; or the first duration is determined by negotiation between the UE and the network equipment. In all embodiments of the present disclosure, the first time length is greater than or equal to a minimum time length for demodulating the PDSCH and generating HARQ-ACK information.

In the embodiment of the present disclosure, the first PDSCH corresponds to a low latency service, and the second PDSCH corresponds to a high latency service. The low delay traffic and the high delay traffic are relative, that is, the requirement of the traffic corresponding to the first PDSCH for delay is higher than that of the traffic corresponding to the first PDSCH. For example: the service corresponding to the first PDSCH is URLLC service, and the service corresponding to the second PDSCH is eMBB service.

In the embodiment of the disclosure, the priority of the HARQ-ACK information of the first PDSCH is higher than that of the second PDSCHHARQ-ACK information. For example: the service corresponding to the first PDSCH is URLLC service, and the service corresponding to the second PDSCH is eMBB service.

It can be understood that the NR-U feedback information transmission method provided by the embodiment of the present disclosure may be applied to a process of interaction between a terminal and a network device. For the process of interactively implementing feedback information transmission on NR-U by a terminal and a network device, reference may be made to the related description of the above embodiments, and details are not described herein again.

Based on the same conception, the embodiment of the disclosure also provides an NR-U feedback information transmission device.

It is to be understood that the NR-U feedback information transmitting apparatus provided by the embodiments of the present disclosure includes hardware structures and/or software modules corresponding to the respective functions for implementing the functions described above. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Fig. 6 is a block diagram illustrating an NR-U feedback information transmitting apparatus according to an exemplary embodiment. Referring to fig. 6, the NR-U feedback information transmission apparatus 100 is applied to a terminal, and includes a determination unit 101 and a transmission unit 102.

A determining unit 101 configured to determine HARQ-ACK feedback information of the first PDSCH.

A sending unit 102, configured to send the HARQ-ACK information of the first PDSCH in the time domain resource unit in response to that the PUCCH resource feeding the HARQ-ACK information of the first PDSCH and the PUCCH resource feeding the one-shot HARQ-ACK feedback information of the one or more second PDSCHs are in the same time domain resource unit.

In one embodiment, transmitting section 102 transmits HARQ-ACK information of the first PDSCH on the PUCCH resource indicated by the DCI using the enhanced dynamic feedback codebook.

In another embodiment, the sending unit 102 is further configured to send the one-time HARQ-ACK information of the one or more second physical downlink shared channels in a time domain resource unit of a PUCCH resource for feeding back one-time HARQ-ACK feedback information of the one or more second PDSCHs.

In another embodiment, the priority of the HARQ-ACK information of the first PDSCH is higher than the priority of the one-shot HARQ-ACK feedback information of the one or more second PDSCHs.

In another embodiment, the time difference between the ending time of the first PDSCH and the starting time of the PUCCH carrying the one-shot HARQ-ACK feedback information codebook is smaller than the first duration.

In yet another embodiment, the first time period is protocol-specified; or the first time length is determined by the terminal and reported to the network equipment; or, the first duration is determined by the network device and sent to the terminal; or the first duration is determined by negotiation between the base station and the UE; or the first duration is determined by the terminal and the network equipment through negotiation. In all embodiments of the present disclosure, the first time length is greater than or equal to a minimum time length for demodulating the PDSCH and generating HARQ-ACK information.

In yet another embodiment, the time domain resource unit includes a time slot or a sub-time slot.

Fig. 7 is a block diagram illustrating an NR-U feedback information transmitting apparatus according to an exemplary embodiment. Referring to fig. 7, the NR-U feedback information transmitting apparatus 200 is applied to a network device, and includes a transmitting unit 201 and a receiving unit 202.

A transmitting unit 201 configured to transmit the first PDSCH.

A receiving unit 202, configured to receive the HARQ-ACK information of the first PDSCH in a time domain resource unit in response to that the PUCCH resource feeding the HARQ-ACK information of the first PDSCH and the PUCCH resource feeding the one-shot HARQ-ACK feedback information of the one or more second PDSCHs are in the same time domain resource unit.

In one embodiment, receiving unit 202 receives HARQ-ACK information of the first PDSCH on the PUCCH resource indicated by the downlink control information using the enhanced dynamic feedback codebook.

In another embodiment, the receiving unit 202 is further configured to: and receiving the one-time HARQ-ACK information of the one or more second physical downlink shared channels in the same time domain resource unit by using the PUCCH resources feeding back the one-time HARQ-ACK feedback information of the one or more second PDSCHs.

In yet another embodiment, the first time period is protocol-specified; or the first time length is determined by the UE and reported to the network equipment; or, the first duration is determined by the network equipment and sent to the UE; or the first duration is determined by negotiation between the base station and the UE; or the first duration is determined by negotiation between the UE and the network equipment. In all embodiments of the present disclosure, the first time length is greater than or equal to a minimum time length for demodulating the PDSCH and generating HARQ-ACK information.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 8 is a block diagram illustrating an apparatus 300 for NR-U feedback information transmission according to an example embodiment. For example, the apparatus 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 8, the apparatus 300 may include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input/output (I/O) interface 312, a sensor component 314, and a communication component 316.

The processing component 302 generally controls overall operation of the device 300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 302 may include one or more processors 320 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 302 can include one or more modules that facilitate interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.

The memory 304 is configured to store various types of data to support operations at the device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 304 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power components 306 provide power to the various components of device 300. The power components 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 300.

The multimedia component 308 includes a screen that provides an output interface between the device 300 and a 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 300 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 310 is configured to output and/or input audio signals. For example, audio component 310 includes a Microphone (MIC) configured to receive external audio signals when apparatus 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 304 or transmitted via the communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

The I/O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 314 includes one or more sensors for providing various aspects of status assessment for the device 300. For example, sensor assembly 314 may detect an open/closed state of device 300, the relative positioning of components, such as a display and keypad of apparatus 300, the change in position of apparatus 300 or a component of apparatus 300, the presence or absence of user contact with apparatus 300, the orientation or acceleration/deceleration of apparatus 300, and the change in temperature of apparatus 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 316 is configured to facilitate wired or wireless communication between the apparatus 300 and other devices. The device 300 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 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 316 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may 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, the apparatus 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 304 comprising instructions, executable by the processor 320 of the apparatus 300 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Fig. 9 is a block diagram illustrating an apparatus 400 for NR-U feedback information transmission according to an example embodiment. For example, the apparatus 400 may be provided as a network device, such as a base station or the like. Referring to fig. 9, apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources, represented by memory 432, for storing instructions, such as applications, that are executable by processing component 422. The application programs stored in memory 432 may include one or more modules that each correspond to a set of instructions. Further, the processing component 422 is configured to execute instructions to perform the above-described methods.

The apparatus 400 may also include a power component 426 configured to perform power management of the apparatus 400, a wired or wireless network interface 450 configured to connect the apparatus 400 to a network, and an input output (I/O) interface 458. The apparatus 400 may operate based on an operating system stored in the memory 432, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 432 comprising instructions, executable by the processing component 422 of the apparatus 400 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A method for transmitting feedback information of an unlicensed frequency band is applied to a terminal and comprises the following steps:

determining hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of a first physical downlink shared channel;

and in response to that the physical uplink control channel resource which feeds back the hybrid automatic repeat request response information of the first physical downlink shared channel and the physical uplink control channel resource which feeds back the one-time hybrid automatic repeat request response information of one or more second physical downlink shared channels are in the same time domain resource unit, sending the hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit.
The method according to claim 1, wherein the sending hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit includes:

and sending hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit by using the enhanced dynamic feedback codebook in the physical uplink control channel resource indicated by the downlink control information.
The method of claim 1, further comprising:

and sending the one-time HARQ-ACK information of the one or more second physical downlink shared channels in the time domain resource unit.
The method according to any one of claims 1 to 3, wherein the hybrid automatic repeat request response information of the first physical downlink shared channel has a higher priority than the one-time hybrid automatic repeat request response feedback information of the one or more second physical downlink shared channels.
The method according to any of claims 1 to 3, wherein a time difference between an ending time of the first physical downlink shared channel and a starting time of a physical uplink control channel carrying the AMR-ACK feedback information codebook is smaller than a first duration.
The method as claimed in claim 5, wherein the first duration is a minimum duration for demodulating a physical downlink shared channel and generating a harq response message according to a protocol agreement.
The method according to claim 1, wherein the time domain resource unit includes a timeslot slot or a sub-timeslot.
A method for transmitting feedback information of an unlicensed frequency band is applied to a network device, and comprises the following steps:

sending a first physical downlink shared channel;

and in response to that the physical uplink control channel resource which feeds back the hybrid automatic repeat request response information of the first physical downlink shared channel and the physical uplink control channel resource which feeds back the one-time hybrid automatic repeat request response feedback information of one or more second physical downlink shared channels are in the same time domain resource unit, receiving the hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit.
The method according to claim 8, wherein receiving harq response information of the first pdcch comprises:

and receiving hybrid automatic repeat request response information of the first physical downlink shared channel in the time domain resource unit by using the enhanced dynamic feedback codebook in the physical uplink control channel resource indicated by the downlink control information.
The method of claim 8, further comprising:

and receiving the one-time HARQ-ACK information of the one or more second physical downlink shared channels in the time domain resource unit.
The method according to any one of claims 8 to 10, wherein the priority of the harq feedback information of the first pdcch is higher than the priority of the harq feedback information of the one or more second pdcchs.
The method according to any of claims 8 to 10, wherein a time difference between an ending time of the first physical downlink shared channel and a starting time of a physical uplink control channel carrying the h-arq-ack-feedback information codebook is smaller than a first duration.
The method as claimed in claim 12, wherein the first duration is a minimum duration for demodulating a physical downlink shared channel and generating harq response information in accordance with a protocol agreement.
The method of claim 13, wherein the time domain resource unit comprises a timeslot slot or a sub-timeslot.
An unauthorized frequency band feedback information transmission device, applied to a terminal, includes:

a determining unit configured to determine hybrid automatic repeat request acknowledgement (HARQ-ACK) information of a first physical downlink shared channel;

a sending unit, configured to send, in response to that a physical uplink control channel resource for feeding back hybrid automatic repeat request response information of the first physical downlink shared channel and a physical uplink control channel resource for feeding back one-time hybrid automatic repeat request response feedback information of one or more second physical downlink shared channels are in the same time domain resource unit, hybrid automatic repeat request response information of the first physical downlink shared channel in the sending unit.
An apparatus for transmitting feedback information in an unlicensed frequency band, applied to a network device, includes:

a transmitting unit configured to transmit a first physical downlink shared channel;

a receiving unit, configured to receive, in a time domain resource unit, harq response information of the first pdcch in response to that a physical uplink control channel resource for feeding back harq response information of the first pdcch and a physical uplink control channel resource for feeding back one-time harq response feedback information of one or more second pdcchs are in the same time domain resource unit.
An apparatus for transmitting feedback information in an unlicensed frequency band, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: the method of any one of claims 1 to 7 is performed.
An apparatus for transmitting feedback information in an unlicensed frequency band, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: the method of any one of claims 8 to 14 is performed.
A non-transitory computer-readable storage medium having instructions stored thereon, which, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the unlicensed band feedback information transmission method of any one of claims 1 to 7.
A non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of a network device, enable the network device to perform the unlicensed band feedback information transmission method of any one of claims 8 to 14.