CN115941124A

CN115941124A - HARQ-ACK feedback method and device

Info

Publication number: CN115941124A
Application number: CN202111162780.6A
Authority: CN
Inventors: 司倩倩; 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-07

Abstract

The embodiment of the application provides a HARQ-ACK feedback method and device. For the satellite internet system, before the terminal equipment obtains the exclusive configuration information of whether each HARQ process configuration starts HARQ-ACK feedback, the scheme of only carrying out HARQ-ACK feedback on a specific HARQ process and carrying out HARQ-ACK feedback on activated DCI ensure that important transmission information is understood consistently between a base station and the terminal equipment, thereby smoothly establishing transmission, simplifying the realization of a terminal and simultaneously ensuring the transmission performance of the system. On the other hand, the base station and the terminal equipment can understand the activated behavior of the SPS PDSCH transmission consistently, so that resource waste is avoided, and the transmission efficiency is improved.

Description

HARQ-ACK feedback method and device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a HARQ-ACK feedback method and apparatus.

Background

In the satellite internet system, a conservative modulation coding mode is adopted, so that the data transmission reliability is high, HARQ-ACK feedback is not required to be carried out on all Physical Downlink Shared Channel (PDSCH) transmissions, and at present, hybrid Automatic Repeat request-acknowledgement (HARQ-ACK) information is only supported to be fed back to two HARQ processes to the maximum extent.

The base station configures Terminal Equipment (UE) to start HARQ-ACK feedback for which HARQ processes through dedicated high-level signaling. When the terminal device has not received the dedicated higher layer configuration information, it is not clear how to perform HARQ-ACK feedback at present.

Disclosure of Invention

Aiming at the problems in the prior art, the embodiment of the application provides a HARQ-ACK feedback method and device.

In a first aspect, an embodiment of the present application provides a HARQ-ACK feedback method, which is applied to a terminal device, and includes:

before obtaining the exclusive configuration information whether to start HARQ-ACK feedback of hybrid automatic repeat request confirmation or not in each HARQ process configuration, HARQ-ACK feedback is carried out based on a preset mode.

Optionally, the performing HARQ-ACK feedback based on the predetermined manner includes any one of:

performing HARQ-ACK feedback on all HARQ processes; or

Performing HARQ-ACK feedback on all HARQ processes; or

And carrying out HARQ-ACK feedback on the HARQ processes meeting the preset conditions.

Optionally, the performing HARQ-ACK feedback on the HARQ process meeting the preset condition includes any one or more of the following:

carrying out HARQ-ACK feedback on the N HARQ processes with the minimum number; or

Carrying out HARQ-ACK feedback on the N HARQ processes with the largest numbers; or

Carrying out HARQ-ACK feedback on the HARQ process with the HARQ process number being a preset value;

wherein N is a natural number.

Optionally, the preset value is all 0 or all 1.

Optionally, the method further comprises:

for the HARQ process determined as starting HARQ-ACK feedback, after the feedback HARQ-ACK is transmitted to the PDSCH of the latest physical downlink shared channel of the HARQ process, receiving scheduling information of the PDSCH corresponding to the HARQ process; or

For the HARQ process determined as not starting HARQ-ACK feedback, receiving scheduling information of a PDSCH corresponding to the HARQ process after T time after the latest PDSCH transmission of the HARQ process; wherein T is a processing time corresponding to the PDSCH.

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

receiving activated downlink control information DCI corresponding to a semi-persistent scheduling (SPS) PDSCH;

and carrying out HARQ-ACK feedback on the activated DCI.

Optionally, the performing HARQ-ACK feedback on the activated DCI includes:

under the condition that HARQ process corresponding to SPS PDSCH does not start HARQ-ACK feedback, HARQ-ACK feedback is carried out on activated downlink control information DCI corresponding to SPS PDSCH; or

And under the condition that the HARQ process corresponding to the SPS PDSCH starts HARQ-ACK feedback, performing HARQ-ACK feedback on the DCI (downlink control information) corresponding to the SPS PDSCH without performing HARQ-ACK feedback, and performing HARQ-ACK feedback on the PDSCH scheduled by the DCI corresponding to the SPS PDSCH.

Optionally, the method further comprises any one or more of:

determining a time slot in which HARQ-ACK feedback is positioned based on the end position of the PDCCH bearing the activated DCI and the HARQ-ACK feedback time sequence; or

Determining the time slot in which HARQ-ACK feedback is positioned based on the ending position of the time slot in which the PDCCH bearing the activated DCI is positioned and the HARQ-ACK feedback time sequence; or

HARQ-ACK feedback of activated DCI corresponding to the SPS PDSCH and HARQ-ACK feedback corresponding to the dynamic PDSCH are transmitted on different physical uplink control channels PUCCH; or

And feeding back HARQ-ACK information corresponding to the activated DCI after a preset number of symbols after the last symbol of the PDCCH for carrying the activated DCI corresponding to the SPS PDSCH.

Optionally, the performing HARQ-ACK feedback on the activated DCI includes:

and under the condition that HARQ-ACK feedback is started in an HARQ process corresponding to the SPS PDSCH, carrying out HARQ-ACK feedback on the PDSCH which is scheduled by the activated DCI corresponding to the SPS PDSCH, and carrying out HARQ-ACK feedback on the activated downlink control information DCI corresponding to the SPS PDSCH.

Optionally, the method further comprises:

and HARQ-ACK feedback information corresponding to the activated DCI and HARQ-ACK feedback information corresponding to the PDSCH which is activated by the DCI scheduling are transmitted on the same PUCCH resource.

Optionally, the method further comprises any one or more of:

determining a time slot where HARQ-ACK feedback is located based on the end position of the PDSCH carrying the activated DCI scheduling and the HARQ-ACK feedback time sequence; or

Determining the time slot in which HARQ-ACK feedback is positioned based on the ending position of the time slot in which the PDSCH for bearing the activated DCI scheduling is positioned and the HARQ-ACK feedback time sequence; or

The HARQ-ACK feedback information for activating the DCI is positioned before the feedback information of the corresponding PDSCH; or

The HARQ-ACK feedback information activating the DCI is located after the feedback information corresponding to the PDSCH.

Optionally, the method further comprises:

under the condition that SPS PDSCH corresponds to a plurality of HARQ processes, HARQ process starting HARQ-ACK feedback of the SPS PDSCH is determined based on HARQ process starting HARQ-ACK feedback of a specific HARQ process corresponding to the SPS PDSCH; or the HARQ process non-opening HARQ-ACK feedback of the SPS PDSCH is determined based on the HARQ process non-opening HARQ-ACK feedback corresponding to the SPS PDSCH.

Optionally, the method further comprises:

and performing HARQ-ACK feedback on the activation DCI based on PUCCH resource indication domain information in the activation DCI or on PUCCH resources determined to be used by the high-layer configuration information.

Optionally, the performing HARQ-ACK feedback on the activated downlink control information DCI corresponding to the SPS PDSCH includes:

and feeding back ACK to the activation DCI when the activation DCI corresponding to the SPS PDSCH is detected.

In a third aspect, an embodiment of the present application provides a HARQ-ACK feedback method, applied to a network device, including:

receiving HARQ-ACK feedback information sent by terminal equipment; the HARQ-ACK feedback information is sent by the terminal equipment based on a preset mode before the terminal equipment obtains exclusive configuration information of whether each hybrid automatic repeat request HARQ process configuration starts HARQ-ACK feedback.

Optionally, the predetermined manner includes any one of:

performing HARQ-ACK feedback on all HARQ processes; or

Performing HARQ-ACK feedback on all HARQ processes; or

Optionally, the preset condition includes any one or more of the following:

numbering the N HARQ processes with the minimum number; or

Numbering the N HARQ processes with the largest number; or

The HARQ process number is a preset value;

wherein N is a natural number.

Optionally, the preset value is all 0 or all 1.

In a fourth aspect, an embodiment of the present application provides a HARQ-ACK feedback method, applied to a network device, including:

sending activated downlink control information DCI corresponding to the semi-persistent scheduling SPS PDSCH to the terminal equipment;

and receiving HARQ-ACK feedback of the terminal equipment to the activated DCI.

Optionally, the receiving HARQ-ACK feedback performed on the activated DCI by the terminal device includes:

under the condition that HARQ process corresponding to SPS PDSCH does not start HARQ-ACK feedback, receiving HARQ-ACK feedback of the terminal equipment to activated downlink control information DCI corresponding to SPS PDSCH; or

And receiving HARQ-ACK feedback of the PDSCH which activates DCI scheduling and corresponds to the SPS PDSCH by the terminal equipment under the condition that the HARQ process corresponding to the SPS PDSCH starts the HARQ-ACK feedback.

under the condition that HARQ-ACK feedback is started in an HARQ process corresponding to an SPS PDSCH, receiving HARQ-ACK feedback of the terminal equipment to the PDSCH which activates DCI scheduling and corresponding to the SPS PDSCH, and receiving HARQ-ACK feedback of the terminal equipment to the DCI corresponding to the SPS PDSCH.

Optionally, the method further comprises:

In a fifth aspect, an embodiment of the present application further provides a terminal device, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the HARQ-ACK feedback method according to the first or second aspect as described above.

In a sixth aspect, an embodiment of the present application further provides a network device, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the HARQ-ACK feedback method according to the third or fourth aspect.

In a seventh aspect, an embodiment of the present application further provides a HARQ-ACK feedback apparatus, applied to a terminal device, including:

the first processing module is used for carrying out HARQ-ACK feedback based on a predetermined mode before exclusive configuration information of whether hybrid automatic repeat request HARQ process configuration starts HARQ-ACK feedback or not is obtained.

In an eighth aspect, an embodiment of the present application further provides a HARQ-ACK feedback apparatus, applied to a terminal device, including:

a first receiving module, configured to receive DCI (downlink control information) for activating a corresponding SPS PDSCH;

and the feedback module is used for carrying out HARQ-ACK feedback on the activated DCI.

In a ninth aspect, an embodiment of the present application further provides an HARQ-ACK feedback apparatus, applied to a network device, including:

the second processing module is used for receiving HARQ-ACK feedback information sent by the terminal equipment; the HARQ-ACK feedback information is sent based on a predetermined mode before the terminal equipment obtains exclusive configuration information of whether each hybrid automatic repeat request HARQ process configuration starts hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback.

In a tenth aspect, an embodiment of the present application further provides an HARQ-ACK feedback apparatus, applied to a network device, including:

a sending module, configured to send activated downlink control information DCI corresponding to a semi-persistent scheduling SPS PDSCH to a terminal device;

and the second receiving module is used for receiving HARQ-ACK feedback of the terminal equipment to the activated DCI.

In an eleventh aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program, which is configured to cause the processor to execute the HARQ-ACK feedback method according to the first aspect, or the HARQ-ACK feedback method according to the second aspect, or the HARQ-ACK feedback method according to the third aspect, or the HARQ-ACK feedback method according to the fourth aspect.

According to the HARQ-ACK feedback method and device provided by the embodiment of the application, before the terminal equipment obtains the exclusive configuration information of whether each HARQ process is configured with the HARQ-ACK feedback, the scheme of performing HARQ-ACK feedback only on a specific HARQ process and performing HARQ-ACK feedback on activated DCI are ensured, the understanding of important transmission information between a base station and the terminal equipment is ensured to be consistent, so that transmission is smoothly established, the terminal implementation is simplified, and meanwhile, the transmission performance of a system is ensured. On the other hand, the base station and the terminal equipment can understand the activated behavior of the SPS PDSCH transmission consistently, so that resource waste is avoided, and the transmission efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic flow chart of a HARQ-ACK feedback method according to an embodiment of the present application;

fig. 2 is a second schematic flowchart of a HARQ-ACK feedback method according to an embodiment of the present application;

fig. 3 is a third schematic flowchart of a HARQ-ACK feedback method according to an embodiment of the present application;

fig. 4 is a fourth schematic flowchart of a HARQ-ACK feedback method according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 6 is a second schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 8 is a second schematic structural diagram of a network device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a HARQ-ACK feedback apparatus according to an embodiment of the present application;

fig. 10 is a second schematic structural diagram of a HARQ-ACK feedback apparatus according to an embodiment of the present application;

fig. 11 is a third schematic structural diagram of a HARQ-ACK feedback device according to an embodiment of the present application;

fig. 12 is a fourth schematic structural diagram of a HARQ-ACK feedback device according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, 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.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, suitable systems may be global system for mobile communications (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) systems, long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, long term evolution (long term evolution) systems, LTE-a systems, universal mobile systems (universal mobile telecommunications systems, UMTS), universal internet Access (world interoperability for microwave Access (WiMAX) systems, new Radio interface (NR) systems, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5 GS), and the like.

A terminal device (e.g., UE) referred to in the embodiments of the present application may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange languages and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for serving a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames and Internet Protocol (IP) packets with one another as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communications network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may also be a network device (NodeB) in a Wide-band Code Division Multiple Access (WCDMA), may also be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), may also be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico) and the like, and the present application is not limited in this embodiment. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

A conservative modulation coding mode is adopted in the satellite Internet system, so that the reliability of data transmission is high, HARQ-ACK feedback does not need to be carried out on all PDSCH transmission, and HARQ-ACK information is only fed back to two HARQ processes at most. And the base station configures the terminal to start HARQ-ACK feedback for the HARQ processes through dedicated high-level signaling. When the terminal has not received the dedicated higher layer configuration information, it is not clear how to perform HARQ-ACK feedback at present.

In an NR communication system, HARQ-ACK feedback is required for PDSCH transmission corresponding to all HARQ processes, and a semi-static codebook and dynamic codebook scheme is supported in NR. When the terminal equipment is configured to use the semi-static HARQ-ACK codebook, determining a candidate position of PDSCH transmission according to semi-static configuration information such as HARQ-ACK feedback time sequence (K1), semi-static time slot structure (if configured) and PDSCH candidate time domain resource allocation information, and generating the HARQ-ACK codebook based on the received PDSCH transmission in the PDSCH transmission candidate position. And when the terminal equipment is configured to use the dynamic HARQ-ACK codebook, determining the bit sequence and the Total bit number of the fed-back HARQ-ACK codebook based on the counting DAI (C-DAI) indicated by the downlink DCI and the Total DAI (T-DAI). For SPS PDSCH transmission, the terminal device performs HARQ-ACK feedback for all SPS PDSCH transmissions. And before the terminal equipment does not obtain the exclusive codebook configuration information, the terminal equipment only feeds back 1-bit HARQ-ACK information. That is, before the terminal device obtains the dedicated codebook configuration information, the base station cannot schedule multiple PDSCHs to feed back on the same PUCCH resource.

In the satellite internet system, a base station configures whether HARQ-ACK feedback is started or not for each HARQ process, and two HARQ processes can be configured to start the HARQ-ACK feedback at most, so that the HARQ-ACK codebook only needs to support 2 bits at most and corresponds to the HARQ process for starting the HARQ feedback, and two HARQ-ACK codebooks in NR do not need to be supported. Before the terminal equipment obtains the exclusive configuration information of whether each HARQ process configuration starts HARQ-ACK feedback, no clear scheme exists for how to carry out HARQ-ACK feedback. If no HARQ-ACK information is fed back, the terminal equipment also feeds back the HARQ-ACK for the Msg4 and some more important exclusive RRC configuration information during initial access, and the consistency of understanding between the base station and the terminal equipment cannot be ensured, so that smooth transmission may not be performed. If the feedback is consistent with the NR, only 1-bit information is fed back, it may happen that multiple HARQ processes need to feed back 1-bit information in different time slots, and the terminal device does not support more than 2 HARQ processes to perform HARQ-ACK feedback, so how to perform HARQ-ACK feedback before dedicated configuration information is not obtained needs to be considered.

Further, for Semi-Persistent Scheduling (SPS PDSCH) transmission, if the HARQ process corresponding to the activated SPS PDSCH does not start HARQ-ACK feedback, the base station cannot know whether the terminal device correctly receives activation information, and the base station periodically transmits the SPS PDSCH after transmitting the SPS PDSCH activation signaling, but the terminal device does not subsequently receive the SPS PDSCH due to not receiving the activation signaling, which causes resource waste and reduces transmission efficiency.

For SPS PDSCH transmission, if the corresponding HARQ process is feedback-enabled, the terminal device may perform feedback on the HARQ process corresponding to the SPS PDSCH transmission, and if the corresponding HARQ process is not feedback-enabled, the terminal device may not perform feedback on the HARQ process corresponding to the SPS PDSCH transmission. Before the terminal equipment obtains the configuration information of whether to start the HARQ-ACK feedback for each HARQ process, it is not known which HARQ processes are started to perform the HARQ-ACK feedback, and therefore how to perform the HARQ-ACK feedback is not clear.

All SPS PDSCHs are fed back in the NR system, and the base station may determine whether the terminal device correctly receives the activation signaling of the SPS PDSCHs based on the feedback information of the terminal. However, for SPS PDSCH transmission in the satellite internet system, if the corresponding HARQ process is not feedback-enabled, there is no way to solve the problem that the base station and the terminal device may not understand consistently whether the SPS PDSCH is activated.

Fig. 1 is a schematic flow diagram of a HARQ-ACK feedback method provided in an embodiment of the present application, and as shown in fig. 1, the method may be applied to a terminal device UE, and the method at least includes the following steps:

step 100, before obtaining the dedicated configuration information of whether to start HARQ-ACK feedback of hybrid automatic repeat request acknowledgement (HARQ-ACK) or not in each HARQ process configuration, performing HARQ-ACK feedback based on a predetermined mode.

Specifically, the dedicated configuration information is suitable for configuring whether the UE starts HARQ-ACK feedback corresponding to the HARQ process, and after the UE receives the dedicated configuration information, the UE may perform HARQ-ACK feedback operation corresponding to each HARQ process based on an indication of the dedicated configuration information, but under the condition that the UE does not obtain the dedicated configuration information indicating whether each HARQ process configures the HARQ-ACK feedback, the UE does not know how to perform HARQ-ACK feedback.

Further, before the terminal device obtains the dedicated configuration information of whether to start HARQ-ACK feedback in each HARQ process configuration, HARQ-ACK feedback is performed according to a predetermined method, where the predetermined method includes any one of the following cases:

performing HARQ-ACK feedback on all HARQ processes;

Specifically, the predetermined manner may be defined based on actual needs, and the following manners are provided and described in the embodiments of the present application.

One predetermined way is: no HARQ-ACK feedback is performed for all HARQ processes. It can be understood that HARQ-ACK feedback is not performed for any HARQ process until the UE obtains dedicated configuration information for configuring whether to turn on HARQ-ACK feedback for each HARQ process.

Another predetermined manner is: and performing HARQ-ACK feedback on all HARQ processes. It can be understood that HARQ-ACK feedback is performed for any HARQ process before the UE obtains dedicated configuration information for configuring whether HARQ-ACK feedback is turned on for each HARQ process. For the predetermined mode, in order to avoid the UE performing HARQ-ACK feedback for the number of HARQ processes that exceeds the UE capability support for performing HARQ-ACK feedback, before the UE obtains the dedicated configuration information indicating whether each HARQ process configuration starts HARQ-ACK feedback, the base station needs to avoid scheduling the number of HARQ processes that exceed the UE capability support for feeding back HARQ-ACK when performing scheduling.

Yet another predetermined manner is: and carrying out HARQ-ACK feedback on the HARQ processes meeting the preset conditions. It can be understood that HARQ-ACK feedback is only performed for a specific HARQ process before the UE obtains dedicated configuration information whether each HARQ process configures HARQ-ACK feedback to be turned on.

Further, performing HARQ-ACK feedback on HARQ processes meeting preset conditions, including any one or more of the following:

carrying out HARQ-ACK feedback on the N HARQ processes with the minimum number;

carrying out HARQ-ACK feedback on the N HARQ processes with the largest numbers;

wherein, N is a natural number, and the preset value is all 0 or all 1.

For example, the UE may perform HARQ-ACK feedback only for the least numbered 1 (N = 1) or 2 (N = 2) processes; or only performing HARQ-ACK feedback on the 1 or 2 processes with the largest number.

For another example, if the HARQ process number indicated by the scheduling information is all '0', performing HARQ-ACK feedback; when the indicated HARQ process number is not all '0', HARQ-ACK feedback is not performed.

For example, if the scheduling information is DCI format 1_0, HARQ-ACK feedback is performed only when the indicated HARQ process number is '0000'; when the indicated HARQ process number is not '0000', HARQ-ACK feedback is not performed.

If the scheduling information is DCI format 1_1, performing HARQ-ACK feedback only when the indicated HARQ process number is '00000'; when the indicated HARQ process number is not '00000', HARQ-ACK feedback is not performed.

For another example, if the HARQ process number indicated by the scheduling information is all '1', performing HARQ-ACK feedback; when the indicated HARQ process number is not all '1', HARQ-ACK feedback is not performed.

If the scheduling information is DCI format 1_0, performing HARQ-ACK feedback only when the indicated HARQ process number is '1111'; when the indicated HARQ process number is not '1111', not performing HARQ-ACK feedback;

if the scheduling information is DCI format 1_1, performing HARQ-ACK feedback only when the indicated HARQ process number is '11111'; when the indicated HARQ process number is not '11111', HARQ-ACK feedback is not performed.

On the basis of the above embodiment, the HARQ-ACK feedback method may further include the following steps:

and for the HARQ process determined to start HARQ-ACK feedback, after the feedback HARQ-ACK is transmitted to the PDSCH of the latest physical downlink shared channel of the HARQ process, receiving and scheduling information of the PDSCH corresponding to the HARQ process. That is, for the HARQ process determined to start HARQ-ACK feedback based on the above method, the base station needs to retransmit the scheduling information for scheduling the process to transmit PDSCH after feeding back HARQ-ACK for the latest PDSCH transmission of the process.

Alternatively, the method may further include:

for the HARQ process determined as not starting HARQ-ACK feedback, receiving scheduling information of a PDSCH corresponding to the HARQ process after T time after the latest PDSCH transmission of the HARQ process; wherein T is a processing time corresponding to the PDSCH. That is, for the HARQ process determined as not having HARQ-ACK feedback turned on based on the above method, the base station needs to retransmit the scheduling information for scheduling the process to transmit the PDSCH after T time after the latest PDSCH transmission for the process, where T is the processing time corresponding to the PDSCH.

Fig. 2 is a second schematic flow chart of a HARQ-ACK feedback method provided in an embodiment of the present application, and as shown in fig. 2, the method may be applied to a network device, for example, a base station, and the method at least includes the following steps:

step 200, receiving HARQ-ACK feedback information sent by UE;

the HARQ-ACK feedback information is sent by the terminal equipment based on a preset mode before the terminal equipment obtains exclusive configuration information of whether each hybrid automatic repeat request HARQ process configuration starts HARQ-ACK feedback.

In the embodiments of the present application, before the UE obtains the dedicated configuration information indicating whether to start HARQ-ACK feedback configured for each HARQ process, how to perform HARQ-ACK feedback for each HARQ process is provided, specifically, before the dedicated configuration information indicating whether to start HARQ-ACK feedback configured for each HARQ process is sent to the UE, HARQ-ACK feedback information sent by the UE is received according to a predetermined manner. The predetermined manner may be predefined in a standard. And the base station receives the HARQ-ACK feedback information sent by the UE, and the understanding consistency of the base station and the terminal equipment for important transmission information is ensured.

Optionally, the predetermined manner includes any one of:

performing HARQ-ACK feedback on all HARQ processes;

Optionally, the preset condition includes any one or more of the following:

numbering the N HARQ processes with the minimum number;

numbering the N HARQ processes with the largest number;

the HARQ process number is a preset value;

wherein, N is a natural number, and the preset value is all 0 or all 1.

For the content related to the predetermined mode, the preset condition, and the like provided in the embodiment of the present application, reference may be made to the above method embodiment, and details are not described herein again.

The technical solutions of the embodiments of the present application are further described below by specific examples.

Example one: before the terminal equipment obtains the exclusive configuration information of whether each HARQ process configuration starts HARQ-ACK feedback, HARQ-ACK feedback is only carried out on the HARQ processes of which the HARQ process number indication domain is all '0'.

Case 1: a network device (for example, a base station) schedules a PDSCH transmission scrambled by a C-RNTI through DCI format 1_0, and the HARQ process number indication field contained in DCI format 1 _u0 is '0000', and then the terminal device performs HARQ-ACK feedback on the PDSCH transmission; the base station needs to schedule the next PDSCH transmission of the process after receiving the corresponding HARQ-ACK feedback information.

Case 2: the base station schedules a PDSCH transmission scrambled by C-RNTI through DCI format 1_1, and the HARQ process number indication field contained in the DCI format 1_1 is '00000', and the terminal equipment performs HARQ-ACK feedback on the PDSCH transmission; the base station needs to schedule the next PDSCH transmission of the process after receiving the corresponding HARQ-ACK feedback information.

Case 3: the base station schedules a PDSCH transmission scrambled by the C-RNTI through a DCI format 1_0, and the HARQ process number indication field contained in the DCI format 1 _0is '0110', and the terminal equipment does not perform HARQ-ACK feedback; the base station needs to send the scheduling information for scheduling the process to transmit the PDSCH again after T time after sending the PDSCH transmission, where T is the processing time corresponding to the PDSCH.

Case 4: the base station schedules a PDSCH transmission scrambled by C-RNTI through DCI format 1_1, and the HARQ process number indication field contained in the DCI format 1_1 is '00011', so that the terminal equipment does not perform HARQ-ACK feedback; the base station needs to send the scheduling information for scheduling the process to transmit the PDSCH again after T time after sending the PDSCH transmission, where T is the processing time corresponding to the PDSCH.

Example two: before the terminal equipment obtains the exclusive configuration information of whether each HARQ process configuration starts HARQ-ACK feedback, HARQ-ACK feedback is only carried out on HARQ processes of which the HARQ process number indication domain is all '1'.

Case 1: the base station schedules a PDSCH transmission scrambled by C-RNTI through DCI format 1_0, and the HARQ process number indication domain contained in the DCI format 1_0 is '1111', and the terminal equipment performs HARQ-ACK feedback on the PDSCH transmission; the base station needs to schedule the next PDSCH transmission of the process after receiving the corresponding HARQ-ACK feedback information.

Case 2: the base station schedules a PDSCH transmission scrambled by C-RNTI through DCI format 1_1, and the HARQ process number indication field contained in the DCI format 1_1 is '11111', and the terminal equipment carries out HARQ-ACK feedback on the PDSCH transmission; the base station needs to schedule the next PDSCH transmission of the process after receiving the corresponding HARQ-ACK feedback information.

Case 3: the base station schedules a PDSCH transmission scrambled by the C-RNTI through a DCI format 1_0, and the HARQ process number indication field contained in the DCI format 1 _0is '0000', so that the terminal equipment does not perform HARQ-ACK feedback; the base station needs to send the scheduling information for scheduling the process to transmit the PDSCH again after T time after sending the PDSCH transmission, wherein T is the processing time corresponding to the PDSCH;

case 4: the base station schedules a PDSCH transmission scrambled by C-RNTI through DCI format 1_1, and the HARQ process number indication field contained in the DCI format 1_1 is '00000', so that the terminal equipment does not perform HARQ-ACK feedback; the base station needs to send the scheduling information for scheduling the process to transmit the PDSCH again after T time after sending the PDSCH transmission, where T is the processing time corresponding to the PDSCH.

The embodiment of the application provides a scheme for carrying out HARQ-ACK feedback only on a specific HARQ process before terminal equipment obtains exclusive configuration information whether each HARQ process is configured with HARQ-ACK feedback, so that the understanding of important transmission information between a base station and the terminal equipment is consistent, transmission is smoothly established, and the transmission performance of the system is ensured while the realization of a terminal is simplified. On the other hand, the base station and the terminal equipment can understand the activated behavior of the SPS PDSCH transmission consistently, so that resource waste is avoided, and the transmission efficiency is improved.

Fig. 3 is a third schematic flow chart of a HARQ-ACK feedback method provided in the embodiment of the present application, and as shown in fig. 3, the method may be applied to a terminal device UE, and the method at least includes the following steps:

step 300, receiving activated downlink control information DCI corresponding to the semi-persistent scheduling SPS PDSCH;

and 310, performing HARQ-ACK feedback on the activated DCI.

Specifically, the UE receives an activation DCI corresponding to a semi-persistent scheduling SPS PDSCH transmitted by a network device, for example, a base station, and then performs HARQ-ACK feedback for the activation DCI corresponding to the SPS PDSCH.

Optionally, performing HARQ-ACK feedback on the activation DCI by the UE may include:

And under the condition that the HARQ process corresponding to the SPS PDSCH starts HARQ-ACK feedback, not performing HARQ-ACK feedback on the DCI (downlink control information) corresponding to the SPS PDSCH, but performing HARQ-ACK feedback on the PDSCH scheduled by the DCI corresponding to the SPS PDSCH.

Whether HARQ-ACK feedback is started for the HARQ process corresponding to the SPS PDSCH is determined based on exclusive configuration information. Before the UE obtains the dedicated configuration information of whether the HARQ process is started to perform HARQ-ACK feedback, whether the HARQ process corresponding to the SPS PDSCH is started to perform HARQ-ACK feedback can be determined based on a preset mode. If the HARQ process corresponding to the SPS PDSCH does not start HARQ-ACK, the UE does not need to perform HARQ-ACK feedback on the SPS PDSCH; and if the HARQ process corresponding to the SPS PDSCH is started to be HARQ-ACK, the UE needs to perform HARQ-ACK feedback on the SPS PDSCH.

Specifically, if the HARQ process corresponding to the SPS PDSCH is not started to perform HARQ-ACK feedback, performing HARQ-ACK feedback on activated DCI corresponding to the SPS PDSCH; and if the HARQ process corresponding to the SPS PDSCH is started to perform HARQ-ACK feedback, performing HARQ-ACK feedback on the PDSCH which is corresponding to the SPS PDSCH and is scheduled by the activated DCI, and not performing HARQ-ACK feedback on the activated DCI. And if the HARQ process corresponding to the SPS PDSCH is started to perform HARQ-ACK feedback, the terminal performs HARQ-ACK feedback on the PDSCH which is scheduled by the activated DCI and does not perform HARQ-ACK feedback on the activated DCI, and then the base station can determine whether the terminal receives the activated DCI or not through the HARQ-ACK feedback corresponding to the PDSCH which is scheduled by the activated DCI and can also ensure whether the base station and the terminal are activated and understand consistently on the SPS PDSCH transmission.

Further, the method embodiments may further include any one or more of:

the UE determines a time slot where HARQ-ACK feedback is located based on the end position of the PDCCH bearing the activated DCI and the HARQ-ACK feedback time sequence; or

The UE determines the time slot in which HARQ-ACK feedback is positioned based on the end position of the time slot in which the PDCCH bearing the activated DCI is positioned and the HARQ-ACK feedback time sequence; or

And the HARQ-ACK feedback of the activated DCI corresponding to the SPS PDSCH and the HARQ-ACK feedback corresponding to the dynamic PDSCH are transmitted on different physical uplink control channels PUCCH. That is, HARQ-ACK feedback of activated DCI corresponding to SPS PDSCH cannot be transmitted on the same PUCCH as HARQ-ACK feedback corresponding to PDSCH to avoid impact on HARQ-ACK codebook determination. Or

And after a preset number (for example, N) of symbols after the last symbol of the PDCCH carrying the activation DCI corresponding to the SPS PDSCH, feeding back HARQ-ACK information corresponding to the activation DCI. And when the subcarrier interval of the PDCCH and the PUCCH carrying the HARQ-ACK is 120kHz, the N value is 25. Because HARQ-ACK feedback is carried out on the activated DCI, the interval between the last symbol of the PDCCH for activating the DCI and the first symbol of the PUCCH for bearing the HARQ-ACK needs to be ensured to be larger than the processing time for the terminal to analyze the activated DCI and prepare the HARQ-ACK transmission.

Optionally, the HARQ-ACK feedback of the UE on the activation DCI may include:

Further, in this embodiment, HARQ-ACK feedback information corresponding to the DCI activation and HARQ-ACK feedback information corresponding to the PDSCH of DCI scheduling activation are transmitted on the same PUCCH resource. That is, if the HARQ process corresponding to the SPS PDSCH is enabled with HARQ-ACK feedback, the HARQ-ACK feedback information corresponding to the activated DCI and the HARQ-ACK feedback corresponding to the PDSCH scheduled by the activated DCI are transmitted on the same PUCCH resource.

Further, if the HARQ process corresponding to the SPS PDSCH does not start HARQ-ACK feedback, HARQ-ACK feedback is not performed on the PDSCH corresponding to the SPS PDSCH which is scheduled by the activated DCI, and HARQ-ACK feedback is performed only on the activated downlink control information DCI corresponding to the SPS PDSCH.

Further, method embodiments may also include any one or more of:

and the UE determines the time slot of HARQ-ACK feedback based on the ending position of the PDSCH for bearing the activated DCI scheduling and the HARQ-ACK feedback time sequence. Or

And the UE determines the time slot where the HARQ-ACK feedback is positioned based on the ending position of the time slot where the PDSCH for bearing and activating the DCI scheduling is positioned and the HARQ-ACK feedback time sequence. Or

The HARQ-ACK feedback information for activating DCI precedes the feedback information for the corresponding PDSCH. Or

On the basis of the above embodiments, the method further includes:

under the condition that SPS PDSCH corresponds to a plurality of HARQ processes, HARQ process starting HARQ-ACK feedback of the SPS PDSCH is determined based on HARQ process starting HARQ-ACK feedback of a specific HARQ process corresponding to the SPS PDSCH; or the HARQ process non-opening HARQ-ACK feedback of the SPS PDSCH is determined based on the HARQ process non-opening HARQ-ACK feedback corresponding to the SPS PDSCH. That is, if SPS PDSCH corresponds to multiple HARQ processes, HARQ process corresponding to SPS PDSCH is not enabled for HARQ-ACK feedback, which means that HARQ process corresponding to SPS PDSCH configuration is not enabled for HARQ-ACK feedback for a specific HARQ process (e.g., HARQ process corresponding to the first PDSCH transmission that activates DCI scheduling); the HARQ process corresponding to the SPS PDSCH is turned on HARQ-ACK feedback, which means that the specific HARQ process corresponding to the SPS PDSCH configuration (e.g., the HARQ process corresponding to the first PDSCH transmission activating DCI scheduling) is turned on HARQ-ACK feedback.

Specifically, under the condition that an SPS PDSCH corresponds to a plurality of HARQ processes and HARQ-ACK feedback is not started in a specific HARQ process corresponding to the SPS PDSCH, HARQ-ACK feedback is carried out on activated DCI corresponding to the SPS PDSCH; or

Under the condition that an SPS PDSCH corresponds to a plurality of HARQ processes and a specific HARQ process corresponding to the SPS PDSCH starts HARQ-ACK feedback, performing HARQ-ACK feedback on a PDSCH which is corresponding to the SPS PDSCH and is scheduled by activated DCI, and not performing HARQ-ACK feedback on the activated DCI; or

Under the condition that an SPS PDSCH corresponds to a plurality of HARQ processes and a specific HARQ process corresponding to the SPS PDSCH starts HARQ-ACK feedback, performing HARQ-ACK feedback on the PDSCH corresponding to the SPS PDSCH and activating DCI scheduling, and performing HARQ-ACK feedback on the DCI corresponding to the SPS PDSCH.

Further, when the UE detects the activated DCI corresponding to the SPS PDSCH, feeding back ACK to the UE; and when the UE does not detect the activated DCI corresponding to the SPS PDSCH, not carrying out HARQ-ACK feedback.

Optionally, the embodiment may further include:

and performing HARQ-ACK feedback on the activated DCI based on PUCCH resource indication domain information in the activated DCI or on PUCCH resources determined to be used by the high-layer configuration information. That is, when HARQ-ACK feedback is performed on the activated DCI corresponding to the SPS PDSCH, the PUCCH resource to be used is determined based on the PUCCH resource indication field information in the activated DCI or based on the higher layer configuration information.

Fig. 4 is a fourth schematic flow chart of a HARQ-ACK feedback method provided in an embodiment of the present application, and as shown in fig. 4, the method may be applied to a network device such as a base station, and the method at least includes the following steps:

step 400, sending activated downlink control information DCI corresponding to the SPS PDSCH to the terminal equipment;

and step 410, receiving HARQ-ACK feedback of the terminal equipment to the activated DCI.

Specifically, the base station transmits activation DCI corresponding to the semi-persistent scheduling SPS PDSCH to the UE to activate the corresponding PDSCH. And after receiving the activation DCI, the UE performs HARQ-ACK feedback aiming at the activation DCI corresponding to the SPS PDSCH, and the base station receives the HARQ-ACK feedback sent by the UE.

And receiving the HARQ-ACK feedback of the PDSCH which activates DCI scheduling and corresponds to the SPS PDSCH by the terminal equipment under the condition that the HARQ process corresponding to the SPS PDSCH starts the HARQ-ACK feedback.

Specifically, if the HARQ process corresponding to the SPS PDSCH is not started to perform HARQ-ACK feedback, performing HARQ-ACK feedback on activated DCI corresponding to the SPS PDSCH; and if the HARQ process corresponding to the SPS PDSCH is started to perform HARQ-ACK feedback, performing HARQ-ACK feedback on the PDSCH corresponding to the SPS PDSCH and activating DCI scheduling, and not performing HARQ-ACK feedback on the activating DCI.

Optionally, the receiving HARQ-ACK feedback performed on the activated DCI by the terminal device may include:

under the condition that HARQ process corresponding to SPS PDSCH starts HARQ-ACK feedback, HARQ-ACK feedback of the PDSCH which activates DCI scheduling corresponding to SPS PDSCH and HARQ-ACK feedback of the DCI corresponding to SPS PDSCH by the terminal equipment are received.

On the basis of the above embodiments, under the condition that an SPS PDSCH corresponds to a plurality of HARQ processes, HARQ-ACK feedback for starting an HARQ-ACK by the HARQ process of the SPS PDSCH is determined based on HARQ-ACK feedback for starting a specific HARQ process corresponding to the SPS PDSCH; or the HARQ process non-opening HARQ-ACK feedback of the SPS PDSCH is determined based on the HARQ process non-opening HARQ-ACK feedback corresponding to the SPS PDSCH. That is, if SPS PDSCH corresponds to multiple HARQ processes, HARQ process corresponding to SPS PDSCH is not turned on HARQ-ACK feedback, which means that HARQ process corresponding to SPS PDSCH configuration is not turned on HARQ-ACK feedback for a specific HARQ process (e.g., HARQ process corresponding to the first PDSCH transmission that activates DCI scheduling).

The technical solutions of the embodiments of the present application are further described below by using several specific examples.

Example three: assuming that the terminal device is configured with a subcarrier spacing of 120kHz, the periodicity of the SPS PDSCH is 10ms, and the SPS PDSCH transmission corresponds to one HARQ process.

Case 1: HARQ process corresponding to SPS PDSCH is not started to perform HARQ-ACK feedback, and only activated DCI corresponding to SPS PDSCH is subjected to HARQ-ACK feedback.

If the base station sends activation DCI of SPS PDSCH in the time slot n and schedules the first PDSCH transmission in the time slot n +1, when the terminal equipment detects the activation DCI in the time slot n, if the DCI indicates that the value of K1 is 5, ACK is fed back to the activation DCI in the time slot n + 6; when the terminal device does not detect the active DCI in slot n, no information is fed back.

The base station cannot indicate that HARQ-ACK feedback for other dynamic PDSCHs is transmitted in slot n + 6.

The base station should indicate that the time interval between the PDCCH and the PUCCH corresponding to the DCI and the corresponding HARQ-ACK feedback information are activated is greater than the time length of 25 OFDM symbols.

Case 2: HARQ-ACK feedback is started for the HARQ process corresponding to the SPS PDSCH, HARQ-ACK feedback is not carried out for activated DCI corresponding to the SPS PDSCH, and feedback is carried out for the PDSCH which is scheduled by the activated DCI.

If the base station sends the activation DCI of the SPS PDSCH in the time slot n and schedules the first PDSCH transmission in the time slot n +1, when the terminal equipment detects the activation DCI in the time slot n, if the DCI indicates that the value of K1 is 5, the PDSCH for activating the DCI for the first scheduling is fed back in the time slot n +7, if the terminal equipment correctly demodulates the PDSCH, ACK is fed back, and if the PDSCH is not correctly demodulated, NACK is fed back; when the terminal device does not detect the active DCI in slot n, no information is fed back.

Case 3: and starting HARQ-ACK feedback on the HARQ process corresponding to the SPS PDSCH, and feeding back activated DCI corresponding to the SPS PDSCH and PDSCH scheduled by the activated DCI.

If the base station sends activation DCI of SPS PDSCH in a time slot n and schedules the first PDSCH transmission in the time slot n +1, when the terminal equipment detects the activation DCI in the time slot n, if the DCI indicates that a K1 value is 5, the activation DCI and the PDSCH scheduled for the first time are fed back in the time slot n +7, if the terminal equipment receives the activation DCI, 2-bit information is fed back, the first bit corresponds to feedback information ACK of the activation DCI, the second bit corresponds to a demodulation result of the PDSCH, if the terminal equipment correctly demodulates the PDSCH, ACK is fed back, and if the SPS PDSCH is not correctly demodulated, NACK is fed back; when the terminal device does not detect the active DCI in slot n, no information is fed back.

Example four: assuming that the terminal device is configured with 120kHz subcarrier spacing, the SPS PDSCH transmission has a period of 5ms, and corresponds to two HARQ processes, HARQ process #0 and HARQ process #1. The specific process is an HARQ process corresponding to the first PDSCH for activating DCI scheduling, i.e., HARQ process #0.

Case 1: HARQ process #0 is not started for HARQ-ACK feedback, HARQ process #1 is started or not started for HARQ feedback; and performing HARQ-ACK feedback on the activated DCI corresponding to the SPS PDSCH.

If the base station sends the activation DCI of the SPS PDSCH in the time slot n and schedules the PDSCH for the first time transmission in the time slot n +1, when the terminal equipment detects the activation DCI in the time slot n, if the DCI indicates that the value of K1 is 5, ACK is fed back to the activation DCI in the time slot n + 6; when the terminal device does not detect the active DCI in slot n, no information is fed back.

The base station should indicate that the time interval between PDCCH and PUCCH corresponding to activating DCI and corresponding HARQ-ACK feedback information is greater than the time length of 25 OFDM symbols.

Case 2: HARQ process #0 is started to perform HARQ-ACK feedback, HARQ process #1 is started or is not started to perform HARQ feedback, HARQ-ACK feedback is not performed on activated DCI corresponding to SPS PDSCH, and feedback is performed on PDSCH which is scheduled by the activated DCI.

If the base station sends the activation DCI of the SPS PDSCH in the time slot n and schedules the first PDSCH transmission in the time slot n +1, when the terminal equipment detects the activation DCI in the time slot n, if the DCI indicates that the value of K1 is 5, the SPS PDSCH is fed back in the time slot n +7, if the terminal equipment correctly demodulates the SPS PDSCH, ACK is fed back, and if the SPS PDSCH is not correctly demodulated, NACK is fed back; when the terminal device does not detect the active DCI in slot n, no information is fed back.

Case 3: HARQ process #0 is started to carry out HARQ-ACK feedback, HARQ process #1 is started or is not started to carry out HARQ feedback, and activated DCI corresponding to SPS PDSCH and PDSCH scheduled by the activated DCI are fed back.

If the base station sends activation DCI of SPS PDSCH in a time slot n and schedules the first PDSCH transmission in a time slot n +1, when the terminal equipment detects the activation DCI in the time slot n, if the DCI indicates that a K1 value is 5, the activation DCI and the PDSCH scheduled for the first time are fed back in the time slot n +7, if the terminal equipment receives the activation DCI, 2-bit information is fed back, the first bit corresponds to feedback information ACK of the activation DCI, the second bit corresponds to a demodulation result of the PDSCH, if the terminal equipment correctly demodulates the SPS PDSCH, ACK is fed back, and if the SPS PDSCH is not correctly demodulated, NACK is fed back; when the terminal device does not detect the active DCI in slot n, no information is fed back.

The embodiment of the application provides a scheme for carrying out HARQ-ACK feedback on activated DCI for a satellite Internet system, so that the understanding of important transmission information between a base station and terminal equipment is consistent, transmission is smoothly established, and the transmission performance of the system is ensured while the realization of a terminal is simplified. On the other hand, the base station and the terminal equipment can understand the activated behavior of the SPS PDSCH transmission consistently, so that resource waste is avoided, and the transmission efficiency is improved.

Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure, and as shown in fig. 5, the terminal device UE500 includes a memory 502, a transceiver 503 and a processor 501; the processor 501 and the memory 502 may be physically separated from each other.

A memory 502 for storing a computer program; a transceiver 503 for transceiving data under the control of the processor 501.

In particular, the transceiver 503 is used to receive and transmit data under the control of the processor 501.

Wherein in fig. 5, bus interface 504 may comprise any number of interconnected buses and bridges, with one or more processors represented by processor 501 and various circuits of memory represented by memory 502 being linked together. The bus interface 504 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 503 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, optical fiber cables, and the like. The user interface 505 may also be an interface capable of interfacing with a desired device for different end devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 501 is responsible for managing the bus architecture and general processing, and the memory 502 may store data used by the processor 501 in performing operations.

Alternatively, the processor 501 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

The processor 501 is used for executing any of the methods provided by the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 502, for example:

performing HARQ-ACK feedback on all HARQ processes;

carrying out HARQ-ACK feedback on the N HARQ processes with the minimum number;

wherein N is a natural number.

Optionally, the preset value is all 0 or all 1.

Optionally, the operations further comprise:

for the HARQ process determined as starting HARQ-ACK feedback, after the feedback HARQ-ACK is transmitted to the PDSCH of the latest physical downlink shared channel of the HARQ process, receiving and scheduling information of the PDSCH corresponding to the HARQ process; or

Fig. 6 is a second schematic structural diagram of a terminal device according to an embodiment of the present invention, as shown in fig. 6, the terminal device UE600 includes a memory 602, a transceiver 603, and a processor 601; wherein, the processor 601 and the memory 602 may also be arranged physically separately.

A memory 602 for storing a computer program; a transceiver 603 for transceiving data under the control of the processor 601.

In particular, the transceiver 603 is used to receive and transmit data under the control of the processor 601.

In FIG. 6, among other things, the bus interface 604 may include any number of interconnected buses and bridges, with one or more processors represented by the processor 601 and various circuits of memory represented by the memory 602 being linked together. The bus interface 604 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 603 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. The user interface 605 may also be an interface capable of interfacing with a desired device for different end devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations.

Alternatively, the processor 601 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

The processor 601 is used for executing any of the methods provided by the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 602, for example:

and carrying out HARQ-ACK feedback on the activated DCI.

Optionally, the performing HARQ-ACK feedback on the activated DCI includes:

And under the condition that the HARQ process corresponding to the SPS PDSCH starts HARQ-ACK feedback, not performing HARQ-ACK feedback on the DCI (downlink control information) corresponding to the SPS PDSCH, and performing HARQ-ACK feedback on the PDSCH scheduled by the DCI corresponding to the SPS PDSCH.

Optionally, the operations further comprise any one or more of:

determining a time slot in which HARQ-ACK feedback is positioned based on the end position of the PDCCH bearing the activated DCI and the HARQ-ACK feedback time sequence;

determining the time slot in which HARQ-ACK feedback is positioned based on the ending position of the time slot in which the PDCCH bearing the activated DCI is positioned and the HARQ-ACK feedback time sequence;

HARQ-ACK feedback of the activated DCI corresponding to the SPS PDSCH and HARQ-ACK feedback corresponding to the dynamic PDSCH are transmitted on different physical uplink control channels PUCCH;

Optionally, the performing HARQ-ACK feedback on the activated DCI includes:

and under the condition that HARQ process corresponding to the SPS PDSCH starts HARQ-ACK feedback, performing HARQ-ACK feedback on the PDSCH which activates DCI scheduling corresponding to the SPS PDSCH, and performing HARQ-ACK feedback on activated downlink control information DCI corresponding to the SPS PDSCH.

Optionally, the operations further comprise:

and HARQ-ACK feedback information corresponding to the DCI and HARQ-ACK feedback information corresponding to the PDSCH for activating DCI scheduling are transmitted on the same PUCCH resource.

Optionally, the operations further comprise any one or more of:

determining a time slot where HARQ-ACK feedback is located based on the end position of the PDSCH carrying the activated DCI scheduling and the HARQ-ACK feedback time sequence;

determining the time slot in which HARQ-ACK feedback is positioned based on the ending position of the time slot in which the PDSCH for bearing the activated DCI scheduling is positioned and the HARQ-ACK feedback time sequence;

HARQ-ACK feedback information for activating the DCI is positioned before feedback information corresponding to the PDSCH;

HARQ-ACK feedback information for activating DCI is located after feedback information for a corresponding PDSCH.

Optionally, the operations further comprise:

and performing HARQ-ACK feedback on the activated DCI based on PUCCH resource indication domain information in the activated DCI or on PUCCH resources determined to be used by the high-layer configuration information.

According to the terminal equipment provided by the embodiment of the application, for a satellite internet system, before the terminal equipment obtains the exclusive configuration information of whether each HARQ process is configured with the HARQ-ACK feedback, the HARQ-ACK feedback is only carried out on the specific HARQ process, so that the understanding of important transmission information between a base station and the terminal equipment is consistent, the transmission is smoothly established, the terminal implementation is simplified, and meanwhile, the transmission performance of the system is ensured. On the other hand, the base station and the terminal equipment can understand the activated behavior of the SPS PDSCH transmission consistently, so that resource waste is avoided, and the transmission efficiency is improved.

Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application, and as shown in fig. 7, the network device 700 includes a memory 702, a transceiver 703, and a processor 701: wherein, the processor 701 and the memory 702 may also be arranged physically separately.

A memory 702 for storing a computer program; a transceiver 703 for transceiving data under the control of the processor 701.

In particular, in FIG. 7, among other things, the bus interface 704 may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by the processor 701, and memory, represented by the memory 702, being linked together. The bus interface 704 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 703 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, optical fiber cables, and the like. The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations.

The processor 701 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

The processor 701 is configured to invoke a computer program stored in the memory 702 to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions, for example:

Optionally, the predetermined manner includes any one of:

performing HARQ-ACK feedback on all HARQ processes;

and carrying out HARQ-ACK feedback on the HARQ process meeting the preset condition.

Optionally, the preset condition includes any one or more of the following:

numbering the N HARQ processes with the minimum number;

numbering the N HARQ processes with the largest number;

the HARQ process number is a preset value;

wherein N is a natural number.

Optionally, the preset value is all 0 or all 1.

Fig. 8 is a second schematic structural diagram of a network device according to an embodiment of the present invention, as shown in fig. 8, the network device 800 includes a memory 802, a transceiver 803, a processor 801: wherein the processor 801 and the memory 802 may also be physically separated.

A memory 802 for storing a computer program; a transceiver 803 for transceiving data under the control of the processor 801.

In particular, the bus interface 804 may include any number of interconnected buses and bridges, with various circuits of one or more processors represented by the processor 801 and memory represented by the memory 802 being linked together, among others, in FIG. 8. The bus interface 804 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 803 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 802 may store data used by the processor 801 in performing operations.

The processor 801 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

The processor 801 is configured to call the computer program stored in the memory 802 to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions, for example:

and receiving HARQ-ACK feedback of the terminal equipment to the activated DCI.

Optionally, the operations further comprise:

The network device provided by the embodiment of the application has the advantages that for a satellite internet system, the scheme of HARQ-ACK feedback on activated DCI ensures that important transmission information between a base station and terminal equipment is understood consistently, so that transmission is established smoothly, and the transmission performance of the system is ensured while the terminal implementation is simplified. On the other hand, the base station and the terminal equipment can understand the activated behavior of the SPS PDSCH transmission consistently, so that resource waste is avoided, and the transmission efficiency is improved.

It should be noted that, the terminal device and the network device provided in the embodiments of the present invention can implement all the method steps implemented by the foregoing method embodiments, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in this embodiment are not repeated herein.

Fig. 9 is a schematic structural diagram of a HARQ-ACK feedback apparatus provided in an embodiment of the present application, and as shown in fig. 9, the apparatus may be applied to a terminal device UE, and includes:

a first processing module 901, configured to perform HARQ-ACK feedback based on a predetermined manner before obtaining dedicated configuration information of whether to start HARQ-ACK feedback for each HARQ process configuration.

Fig. 10 is a second schematic structural diagram of a HARQ-ACK feedback apparatus provided in the embodiment of the present application, and as shown in fig. 10, the apparatus may be applied to a terminal device UE, and includes:

a first receiving module 1001, configured to receive DCI (downlink control information) activated corresponding to a SPS PDSCH;

a feedback module 1002, configured to perform HARQ-ACK feedback on the activated DCI.

Fig. 11 is a third schematic structural diagram of a HARQ-ACK feedback apparatus provided in the embodiment of the present application, and as shown in fig. 11, the apparatus may be applied to a network device, such as a gNB, and includes:

a second processing module 1101, configured to receive HARQ-ACK feedback information sent by a terminal device; the HARQ-ACK feedback information is sent by the terminal equipment based on a preset mode before the terminal equipment obtains exclusive configuration information of whether each hybrid automatic repeat request HARQ process configuration starts HARQ-ACK feedback.

Fig. 12 is a fourth schematic structural diagram of a HARQ-ACK feedback apparatus according to an embodiment of the present application, and as shown in fig. 12, the apparatus may be applied to a network device, such as a gNB, and includes:

a sending module 1201, configured to send activated downlink control information DCI corresponding to a semi-persistent scheduling SPS PDSCH to a terminal device;

a second receiving module 1202, configured to receive HARQ-ACK feedback of the terminal device on the activated DCI.

The method and the device provided by the embodiments of the application are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

On the other hand, the embodiment of the present application further provides a processor-readable storage medium, where a computer program is stored, and the computer program is configured to cause the processor to execute the HARQ-ACK feedback method provided in each of the embodiments above.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A HARQ-ACK feedback method is applied to terminal equipment and is characterized by comprising the following steps:

2. The HARQ-ACK feedback method according to claim 1, wherein the HARQ-ACK feedback based on the predetermined manner includes any one of:

performing HARQ-ACK feedback on all HARQ processes; or

Performing HARQ-ACK feedback on all HARQ processes; or

3. The HARQ-ACK feedback method according to claim 2, wherein the performing HARQ-ACK feedback on HARQ processes meeting the preset condition includes any one or more of the following:

Carrying out HARQ-ACK feedback on the HARQ process with the HARQ process number as a preset value;

wherein N is a natural number.

4. The HARQ-ACK feedback method of claim 3, wherein the preset value is all 0 s or all 1 s.

5. The HARQ-ACK feedback method according to any of claims 1 to 4, characterized in that the method further comprises:

for the HARQ process determined to start HARQ-ACK feedback, after the feedback HARQ-ACK is transmitted to the PDSCH of the latest physical downlink shared channel of the HARQ process, receiving and scheduling information of the PDSCH corresponding to the HARQ process; or

6. A HARQ-ACK feedback method is applied to terminal equipment and is characterized by comprising the following steps:

and carrying out HARQ-ACK feedback on the activated DCI.

7. The HARQ-ACK feedback method according to claim 6, wherein the HARQ-ACK feedback for the active DCI comprises:

8. The HARQ-ACK feedback method according to claim 7, wherein the method further comprises any one or more of:

Determining a time slot where HARQ-ACK feedback is located based on the ending position of the time slot where the PDCCH bearing the activated DCI is located and the HARQ-ACK feedback time sequence; or

And feeding back HARQ-ACK information corresponding to the activation DCI after a preset number of symbols after the last symbol of the PDCCH carrying the activation DCI corresponding to the SPS PDSCH.

9. The HARQ-ACK feedback method according to claim 6, wherein the HARQ-ACK feedback for the active DCI comprises:

10. The HARQ-ACK feedback method of claim 9, wherein the method further comprises:

11. The HARQ-ACK feedback method according to claim 9, characterized in that the method further comprises any one or more of:

HARQ-ACK feedback information for activating the DCI is positioned before feedback information corresponding to the PDSCH; or

12. The HARQ-ACK feedback method according to claim 6, 7 or 9, characterized in that the method further comprises:

13. The HARQ-ACK feedback method according to claim 7 or 9, characterized in that the method further comprises:

14. The HARQ-ACK feedback method according to claim 7 or 9, wherein the performing HARQ-ACK feedback on the DCI for the activated downlink control information corresponding to the SPS PDSCH includes:

15. A HARQ-ACK feedback method is applied to network equipment and is characterized by comprising the following steps:

16. The HARQ-ACK feedback method according to claim 15, wherein the predetermined manner includes any one of:

performing HARQ-ACK feedback on all HARQ processes; or

Performing HARQ-ACK feedback on all HARQ processes; or

17. The HARQ-ACK feedback method according to claim 16, wherein the preset conditions include any one or more of:

numbering the N HARQ processes with the minimum number; or

Numbering the N HARQ processes with the largest number; or

The HARQ process number is a preset value;

wherein N is a natural number.

18. The HARQ-ACK feedback method of claim 17, wherein the preset value is all 0 s or all 1 s.

19. A HARQ-ACK feedback method is applied to network equipment and is characterized by comprising the following steps:

and receiving HARQ-ACK feedback of the terminal equipment to the activated DCI.

20. The HARQ-ACK feedback method according to claim 19, wherein the receiving HARQ-ACK feedback for the active DCI by the terminal device includes:

21. The HARQ-ACK feedback method according to claim 19, wherein the receiving HARQ-ACK feedback for the active DCI by the terminal device includes:

22. The HARQ-ACK feedback method according to claim 20 or 21, characterized in that the method further comprises:

under the condition that SPS PDSCH corresponds to a plurality of HARQ processes, HARQ process starting HARQ-ACK feedback of the SPS PDSCH is determined based on HARQ-ACK feedback started by a specific HARQ process corresponding to the SPS PDSCH; or the HARQ process non-opening HARQ-ACK feedback of the SPS PDSCH is determined based on the HARQ process non-opening HARQ-ACK feedback corresponding to the SPS PDSCH.

23. A terminal device comprising a memory, a transceiver, a processor; the method is characterized in that:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

24. The terminal device of claim 23, wherein the HARQ-ACK feedback based on the predetermined manner comprises any of:

performing HARQ-ACK feedback on all HARQ processes; or

Performing HARQ-ACK feedback on all HARQ processes; or

25. The terminal device of claim 24, wherein the HARQ-ACK feedback for HARQ processes meeting preset conditions includes any one or more of the following:

wherein N is a natural number.

26. The terminal device of claim 25, wherein the preset value is all 0's or all 1's.

27. The terminal device of any of claims 23 to 26, wherein the operations further comprise:

28. A terminal device comprising a memory, a transceiver, a processor; the method is characterized in that:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving activated Downlink Control Information (DCI) corresponding to a semi-persistent scheduling (SPS) PDSCH;

and carrying out HARQ-ACK feedback on the activated DCI.

29. The terminal device of claim 28, wherein the HARQ-ACK feedback for the active DCI comprises:

30. The terminal device of claim 29, wherein the operations further comprise any one or more of:

31. The terminal device of claim 28, wherein the HARQ-ACK feedback for the active DCI comprises:

32. The terminal device of claim 31, wherein the operations further comprise:

33. The terminal device of claim 31, wherein the operations further comprise any one or more of:

determining a time slot where HARQ-ACK feedback is located based on the ending position of the PDSCH for bearing the activated DCI scheduling and the HARQ-ACK feedback time sequence; or

34. The terminal device of claim 28, 29 or 31, wherein the operations further comprise:

35. The terminal device of claim 29 or 31, wherein the operations further comprise:

36. The terminal device according to claim 29 or 31, wherein the performing HARQ-ACK feedback on the DCI for the activated downlink control information corresponding to the SPS PDSCH comprises:

37. A network device comprising a memory, a transceiver, a processor; the method is characterized in that:

receiving HARQ-ACK feedback information sent by terminal equipment; the HARQ-ACK feedback information is sent based on a predetermined mode before the terminal equipment obtains exclusive configuration information of whether each hybrid automatic repeat request HARQ process configuration starts hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback.

38. The network device of claim 37, wherein the predetermined manner comprises any of:

performing HARQ-ACK feedback on all HARQ processes; or

Performing HARQ-ACK feedback on all HARQ processes; or

39. The network device of claim 38, wherein the preset condition comprises any one or more of the following:

the N HARQ processes with the minimum number are numbered; or

Numbering the N HARQ processes with the largest number; or

The HARQ process number is a preset value;

wherein N is a natural number.

40. The network device of claim 39, wherein the predetermined value is all 0's or all 1's.

41. A network device comprising a memory, a transceiver, a processor; the method is characterized in that:

and receiving HARQ-ACK feedback of the terminal equipment to the activated DCI.

42. The network device of claim 41, wherein the receiving HARQ-ACK feedback from the terminal device for the active DCI comprises:

43. The network device of claim 41, wherein the receiving HARQ-ACK feedback from the terminal device for the active DCI comprises:

44. The network device of claim 42 or 43, wherein the operations further comprise:

45. A HARQ-ACK feedback device is applied to a terminal device, and is characterized by comprising:

the first processing module is used for carrying out HARQ-ACK feedback based on a preset mode before exclusive configuration information of whether HARQ-ACK feedback is started or not is obtained in each HARQ process configuration.

46. A HARQ-ACK feedback device is applied to a terminal device, and is characterized by comprising:

47. An HARQ-ACK feedback device applied to a network device, comprising:

the second processing module is used for receiving HARQ-ACK feedback information sent by the terminal equipment; the HARQ-ACK feedback information is sent by the terminal equipment based on a preset mode before the terminal equipment obtains exclusive configuration information of whether each hybrid automatic repeat request HARQ process configuration starts HARQ-ACK feedback.

48. A HARQ-ACK feedback device applied to a network device is characterized by comprising:

and a second receiving module, configured to receive HARQ-ACK feedback performed on the activated DCI by the terminal device.

49. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 5, or to perform the method of any one of claims 6 to 15, or to perform the method of any one of claims 15 to 18, or to perform the method of any one of claims 19 to 22.