CN115189812A

CN115189812A - HARQ feedback and beam indication method, network side equipment and terminal

Info

Publication number: CN115189812A
Application number: CN202110560672.8A
Authority: CN
Inventors: 李辉; 骆亚娟; 高秋彬; 陈润华
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-04-06
Filing date: 2021-05-21
Publication date: 2022-10-14
Anticipated expiration: 2041-05-21
Also published as: CN115189812B

Abstract

The application discloses a HARQ feedback and beam indication method, a network side device and a terminal, relating to the technical field of communication, wherein the method comprises the following steps: the network side equipment sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Information (DCI) to the terminal, wherein the DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) and indicating beam information of the PDSCH; the network side equipment receives HARQ feedback information sent by the terminal; and the network side equipment determines the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information. According to the scheme, under the condition that the terminal feedback is NACK, the network side equipment determines that the NACK information is used for indicating that DCI is not decoded correctly or PDSCH is not decoded correctly according to the HARQ feedback information sent by the terminal.

Description

HARQ feedback and beam indication method, network side equipment and terminal

Technical Field

The present application relates to the field of communications technologies, and in particular, to a HARQ feedback and beam indication method, a network side device, and a terminal.

Background

A conventional Hybrid automatic repeat request (HARQ) mechanism is that a base station issues a Physical Downlink Control Channel (PDCCH) for carrying Downlink Control Information (DCI), where the DCI includes Information of a Physical Downlink Shared Channel (PDSCH) scheduled later. And the terminal demodulates the PDCCH bearing the DCI, receives and demodulates the scheduled PDSCH according to the information indicated in the DCI, and feeds back HARQ-ACK information of the PDSCH on the time-frequency resource indicated by the DCI according to a demodulation result.

In Rel-17, a Transmission Configuration Indicator (TCI) of uplink and downlink association and a TCI of uplink and downlink independence are introduced and corresponding indication is performed by using downlink control information format 1/2. In this case, if the existing HARQ-ACK mechanism for DCI format1_1/1 _2is adopted, when the terminal feeds back a Negative Acknowledgement (NACK), the system cannot distinguish whether this NACK information is due to DCI indicating TCI not decoded correctly or PDSCH not decoded correctly.

Disclosure of Invention

The application aims to provide a HARQ feedback and beam indication method, a network side device and a terminal, so that the problem that in the prior art, the network side device cannot distinguish whether NACK information sent by the terminal is due to DCI incorrect decoding or PDSCH incorrect decoding is solved.

In order to achieve the above object, the present application provides a HARQ feedback, including:

the method comprises the steps that network side equipment sends a Physical Downlink Control Channel (PDCCH) for bearing Downlink Control Information (DCI) to a terminal, wherein the DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) and indicating beam information of the PDSCH;

the network side equipment receives HARQ feedback information sent by the terminal;

and the network side equipment determines the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information.

Wherein the HARQ feedback information comprises a first information field and a second information field; wherein the first information domain carries HARQ feedback of the PDSCH, and the second information domain carries HARQ feedback of the DCI;

the network side equipment determines the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information, and the method comprises the following steps:

the network side equipment determines the HARQ feedback of the PDSCH according to the first information domain;

and the network side equipment determines the HARQ feedback of the DCI according to the second information domain.

Wherein the HARQ feedback information comprises a third information field and a fourth information field;

wherein, the third information domain carries indication information indicating whether the terminal feeds back the HARQ of the DCI;

the fourth information domain carries HARQ feedback of the PDSCH under the condition that the indication information indicates that the terminal does not feed back the HARQ of the DCI; or, in a case that the indication information indicates that the terminal feeds back the HARQ of the DCI, the fourth information field carries the HARQ feedback of the PDSCH and the HARQ feedback of the DCI;

under the condition that the indication information indicates that the terminal does not feed back the HARQ of the DCI, the network side equipment determines the HARQ feedback of the PDSCH scheduled by the DCI according to the HARQ feedback information, and the method comprises the following steps:

the network side equipment determines the HARQ feedback of the PDSCH according to the third information domain and the fourth information domain;

under the condition that the indication information indicates the terminal to feed back the HARQ of the DCI, the determining, by the network side device, the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information includes:

and the network side equipment determines the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the third information domain and the fourth information domain.

Wherein the HARQ feedback information comprises a fifth information field and a sixth information field;

the fifth information domain bears the number of HARQ feedbacks of the DCI, and the sixth information domain bears the HARQ feedbacks of the PDSCH and the DCI;

and the network side equipment determines the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the fifth information domain and the sixth information domain.

Wherein the HARQ feedback information comprises a seventh information field and an eighth information field;

the seventh information field carries HARQ feedback of the PDSCH, or the seventh information field carries HARQ feedback of the DCI, and the eighth information field is a null or invalid value;

under the condition that the seventh information domain bears the HARQ feedback of the PDSCH and the eighth information domain is a null or invalid value, the network side equipment determines the HARQ feedback of the PDSCH according to the seventh information domain;

or, when the seventh information field carries the HARQ feedback of the DCI, and the eighth information field is a null or invalid value, the network side device determines the HARQ feedback of the DCI according to the seventh information field.

Wherein the overhead of the second information field is determined by the first information field.

Wherein the HARQ feedback of the DCI is determined by HARQ feedback of the PDSCH.

Wherein, in case that the DCI is used for scheduling a PDSCH and beam information indicating the PDSCH, the DCI satisfies a first condition, the first condition including at least one of:

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

The first scrambling ID is transmission configuration indication-radio network temporary identity (TCI-RNTI);

the first resource includes: a predefined set of control resources and a predefined search space.

The embodiment of the present application further provides a beam indicating method, including:

the network side equipment sends a PDCCH bearing DCI to the terminal;

wherein the DCI is used for scheduling a PDSCH and indicating beam information of the PDSCH on a condition that the DCI satisfies a first condition, the first condition including at least one of:

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

The embodiment of the present application further provides a HARQ feedback method, including:

a terminal receives a PDCCH (physical Downlink control channel) carrying DCI (downlink control information) sent by network side equipment, wherein the DCI is used for scheduling a PDSCH (physical Downlink shared channel) and indicating beam information of the PDSCH;

and the terminal sends HARQ feedback information to the network side equipment, wherein the HARQ feedback information is used for indicating the HARQ feedback of the PDSCH and/or the HARQ feedback of the DCI.

Wherein the HARQ feedback information comprises a first information field and a second information field; wherein the first information domain carries HARQ feedback of the PDSCH, and the second information domain carries HARQ feedback of the DCI.

wherein, the third information field carries indication information indicating whether the terminal feeds back the HARQ of the DCI;

the fourth information domain carries HARQ feedback of the PDSCH under the condition that the indication information indicates that the terminal does not feed back the HARQ of the DCI; or, the fourth information field carries HARQ feedback of the PDSCH and HARQ feedback of the DCI when the indication information indicates that the terminal feeds back HARQ of the DCI.

and the fifth information domain bears the number of HARQ feedbacks of the DCI, and the sixth information domain bears the HARQ feedbacks of the PDSCH and the DCI.

the seventh information field bears the HARQ feedback of the PDSCH, or the seventh information field bears the HARQ feedback of the DCI, and the eighth information field is a null or invalid value.

Before the terminal sends HARQ feedback information to the network side device, the method further includes:

determining the content of HARQ feedback of the PDSCH carried by the first information domain;

and determining the content of the HARQ feedback of the DCI carried by the second information domain according to the content of the HARQ feedback of the PDSCH.

and determining the number of the HARQ feedbacks of the DCI carried by the second information domain according to the content of the HARQ feedbacks of the PDSCH.

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

Wherein the method further comprises:

the terminal determines target beam information according to the HARQ feedback of the DCI and a predefined rule;

and under the condition that the terminal receives other DCI without beam information, the terminal transmits the PDSCH or the physical uplink shared channel PUSCH scheduled by the other DCI according to the target beam information.

Wherein, the terminal determines the target beam information according to the HARQ feedback of the DCI and the predefined rule, including:

and the terminal determines the beam information indicated by one DCI in the DCIs with the HARQ feedback of ACK as the target beam information according to the predefined rule.

The embodiment of the present application further provides a beam indication method, including:

a terminal receives a PDCCH of DCI sent by network side equipment;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

An embodiment of the present application further provides a network side device, which includes a memory, a transceiver, and 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 performing the following:

sending a Physical Downlink Control Channel (PDCCH) for bearing Downlink Control Information (DCI) to a terminal, wherein the DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) and indicating beam information of the PDSCH;

receiving HARQ feedback information sent by the terminal;

and determining HARQ feedback of the PDSCH scheduled by the DCI and/or HARQ feedback of the DCI according to the HARQ feedback information.

the processor is further configured to read the computer program in the memory and perform the following:

determining HARQ feedback of the PDSCH according to the first information domain;

and determining the HARQ feedback of the DCI according to the second information domain.

the fourth information field carries HARQ feedback of the PDSCH under the condition that the indication information indicates that the terminal does not feed back the HARQ of the DCI; or, in a case that the indication information indicates that the terminal feeds back the HARQ of the DCI, the fourth information field carries the HARQ feedback of the PDSCH and the HARQ feedback of the DCI;

in a case where the indication information indicates that the terminal does not feed back HARQ of the DCI, the processor is further configured to read the computer program in the memory and perform the following operations:

in a case where the indication information indicates that the terminal feeds back HARQ of DCI, the processor is further configured to read the computer program in the memory and perform the following operations:

the processor is further configured to read the computer program in the memory and perform the following operations:

the seventh information field bears the HARQ feedback of the PDSCH, or the seventh information field bears the HARQ feedback of the DCI, and the eighth information field is a null or invalid value;

determining the HARQ feedback of the PDSCH according to the seventh information domain under the condition that the seventh information domain bears the HARQ feedback of the PDSCH and the eighth information domain is a null or invalid value;

or, determining the HARQ feedback of the DCI according to the seventh information field when the seventh information field carries the HARQ feedback of the DCI and the eighth information field is a null or invalid value.

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

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:

the network side equipment sends a PDCCH bearing DCI to the terminal;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

An embodiment of the present application further provides a terminal, including a memory, a transceiver, and a processor:

receiving a PDCCH (physical downlink control channel) carrying DCI (downlink control information) sent by network side equipment, wherein the DCI is used for scheduling a PDSCH (physical downlink shared channel) and indicating beam information of the PDSCH;

and sending HARQ feedback information to the network side equipment so that the network side equipment can determine the HARQ feedback of the PDSCH and/or the HARQ feedback of the DCI according to the HARQ feedback information.

the fourth information field carries HARQ feedback of the PDSCH under the condition that the indication information indicates that the terminal does not feed back the HARQ of the DCI; or, the fourth information field carries HARQ feedback of the PDSCH and HARQ feedback of the DCI when the indication information indicates that the terminal feeds back HARQ of the DCI.

the seventh information field carries HARQ feedback of the PDSCH, or the seventh information field carries HARQ feedback of the DCI, and the eighth information field is a null or invalid value.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

Wherein the processor is further configured to read the computer program in the memory and perform the following:

Wherein, in a case that the DCI is used for scheduling a PDSCH and beam information indicating the PDSCH, the DCI satisfies a first condition, the first condition including at least one of:

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

determining target beam information according to the HARQ feedback of the DCI and a predefined rule;

and under the condition of receiving other DCI without beam information, transmitting the PDSCH or the Physical Uplink Shared Channel (PUSCH) scheduled by the other DCI according to the target beam information.

and determining the beam information indicated by one DCI in the DCIs with the HARQ feedback of ACK as the target beam information according to the predefined rule.

receiving a PDCCH of DCI sent by network side equipment;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

The embodiment of the present application further provides a HARQ feedback apparatus, including:

a sending unit, configured to send a physical downlink control channel PDCCH carrying downlink control information DCI to a terminal, where the DCI is used to schedule a physical downlink shared channel PDSCH and indicate beam information of the PDSCH;

a receiving unit, configured to receive HARQ feedback information sent by the terminal;

a determining unit, configured to determine, according to the HARQ feedback information, HARQ feedback of the DCI scheduled PDSCH and/or HARQ feedback of the DCI.

The embodiment of the present application further provides a beam indicating device, including:

a sending unit, configured to send a PDCCH carrying DCI to a terminal;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

a receiving unit, configured to receive a PDCCH carrying DCI sent by a network side device, where the DCI is used to schedule a PDSCH and indicate beam information of the PDSCH;

a sending unit, configured to send HARQ feedback information to the network side device, so that the network side device determines HARQ feedback of the PDSCH and/or HARQ feedback of the DCI according to the HARQ feedback information.

a receiving unit, configured to receive a PDCCH of DCI sent by a network side device;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

An embodiment of the present application also provides a processor-readable storage medium storing a computer program for causing a processor to execute the feedback method of the HAQR as described above; alternatively, the computer program is for causing the processor to perform the beam indicating method as described above.

The technical scheme of the invention at least has the following beneficial effects:

in the embodiment of the application, firstly, network side equipment sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Information (DCI) to a terminal, wherein the DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) and indicating beam information of the PDSCH; secondly, the network side equipment receives HARQ feedback information sent by the terminal; and finally, the network side equipment determines the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information. In this way, the network side device is enabled to determine whether the NACK is due to the incorrect decoding of DCI or the incorrect decoding of PDSCH in case that the HARQ feedback information transmitted by the terminal indicates NACK.

Drawings

Fig. 1 shows a block diagram of a wireless communication system;

fig. 2 is a schematic diagram illustrating a step of a HARQ feedback method according to an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a network side device instructing a terminal to schedule a PDSCH according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating one of the steps of a beam indicating method according to an embodiment of the present application;

fig. 5 illustrates a second step of the HARQ feedback method according to the embodiment of the present application;

fig. 6 is a second schematic diagram illustrating steps of a beam indicating method according to an embodiment of the present application;

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

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

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

fig. 10 is a schematic structural diagram of a beam indicating apparatus according to an embodiment of the present application;

fig. 11 is a second schematic structural diagram of a HARQ feedback device according to the embodiment of the present application;

fig. 12 is a second schematic structural diagram of a beam indicating apparatus according to an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

In the embodiment of the present invention, the term "and/or" describes an association relationship of an associated object, and indicates that three relationships may exist, for example, a and/or B, and may indicate: 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 a part of the embodiments of the present application, and not all of the 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, the applicable system may be a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple access (8, code Division Multiple access,8 CDMA) General Packet Radio Service (GPRS) system, a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), an internet access (8, microwave access) system, a Radio access (max) system, a Radio access (NR) system, etc. (8, ne 5, 8, NR). 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.

The terminal referred to in the embodiments of the present application may refer to 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 terminals may be different, for example, in a 5G system, the terminal 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 "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 (Core Net8 ok, CN) via a Radio Access Network (RAN), and may exchange languages and/or data with the Radio Access network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local loop (8 Local loop) stations, and Personal Digital Assistants (PDAs). 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 station), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which is not limited in this embodiment.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present invention are applicable. The wireless communication system includes a terminal apparatus 11 and a network-side apparatus 12. The terminal device 11 may also be referred to as a terminal or a User Equipment (UE). It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side device 12 may be a base station or a core network, and it should be noted that in this embodiment, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

As shown in fig. 2, an embodiment of the present application provides a method for HARQ feedback, where the method includes: step 201: the method comprises the steps that network side equipment sends a Physical Downlink Control Channel (PDCCH) for bearing Downlink Control Information (DCI) to a terminal, wherein the DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) and indicating beam information of the PDSCH;

as shown in fig. 3, in this step, the network side device may send a PDCCH carrying DCI in the nth Time slot, and notify the terminal to schedule the PDSCH in the (n + 1) th Time slot through a Time domain resource allocation (Time domain resource assignment) in the DCI. The network side equipment indicates the terminal to receive the beam used by the PDSCH through the TCI domain of the DCI, and meanwhile, the network side equipment transmits the time slot in which the HARQ-ACK is positioned and the used PUCCH resources through the PUCCH resource indication domain and the PDSCH-to-HARQ feedback timing indicator (PDSCH-to-HARQ _ feedback timing indicator) terminal. The value range of the PDSCH-to-HARQ _ feedback timing indicator is determined by the base station through a parameter dl-DataToUL-ACK configured by Radio Resource Control (RRC).

Step 202: the network side equipment receives HARQ feedback information sent by the terminal;

similarly, as shown in fig. 3 again, the network side device may instruct the terminal to transmit the HARQ feedback information in the (n + 5) th slot.

Step 203: and the network side equipment determines the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information.

In this step, the network side device may determine the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the content indicated by each information field of the predefined HARQ feedback information.

In the feedback method of the HARQ of the embodiment of the present application, first, a network side device sends a physical downlink control channel PDCCH carrying DCI to a terminal, where the DCI is used to schedule a physical downlink shared channel PDSCH and indicate beam information of the PDSCH; secondly, the network side equipment receives HARQ feedback information sent by the terminal; and finally, the network side equipment determines the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information. In this way, the network side device is enabled to determine whether the NACK is due to the incorrect decoding of DCI or the incorrect decoding of PDSCH in case that the HARQ feedback information transmitted by the terminal indicates NACK.

Here, it should be noted that, in the above embodiment, the HARQ feedback mode may adopt a part1+ part2 mode, so as to implement HARQ feedback on PDSCH and/or HARQ feedback on DCI; namely: the HARQ feedback information includes two parts, part1 and part2. That is to say, through the information indicated by the part1 and the part2 of the HARQ feedback information, the network side device can determine the HARQ feedback of the DCI and the HARQ feedback of the PDSCH, so that the problem that the network side device cannot determine whether the DCI is decoded incorrectly or the PDSCH is decoded incorrectly due to the fact that only the HARQ information of the PDSCH is fed back in the HARQ feedback mechanism in the prior art is solved.

As an optional implementation manner, the HARQ feedback information includes a first information field and a second information field; wherein the first information field carries HARQ feedback of the PDSCH, and the second information field carries HARQ feedback of the DCI;

in this implementation manner, in step 103, the determining, by the network side device according to the HARQ feedback information, HARQ feedback of the DCI scheduled PDSCH and/or HARQ feedback of the DCI includes:

As also shown in fig. 3, the terminal receives and demodulates the PDCCH in the nth slot, and receives and demodulates the scheduled PDSCH in the (n + 1) th slot according to the demodulated DCI information. The demodulation results include the following two cases:

the first condition is as follows:

and the terminal judges that the Cyclic Redundancy Check (CRC) check of the PDSCH fails and feeds back the HARQ-ACK through the PUCCH resource appointed by the network side equipment at the (n + 5) th time slot. The HARQ/ACK information fed back by the terminal includes two parts, i.e., a first information field and a second information field (the first information field may be part1 as described above, and the second information field may be part2 as described above). If the content of the first information domain is NACK, the network side equipment determines that the transmission of the PDSCH fails; if the content of the second information field is ACK, informing the network side equipment that the DCI is demodulated correctly; and the base station retransmits the PDSCH at the subsequent time according to the instruction of the terminal. If the content of the first information domain is NACK, the network side equipment determines that the transmission of the PDSCH fails; and if the content of the second information field is also NACK, informing the network side equipment that the DCI is not decoded correctly.

Case two:

the terminal judges that the CRC check of the PDSCH is successful, and the terminal may only feed back that the content of the first information field is ACK, and at this time, the content of the second information field is null or an invalid value.

Here, it should be noted that, in order to ensure the reliability of NACK/ACK determined by the network side device, the network side device may perform acknowledgement by repeatedly transmitting a PDCCH.

As another optional implementation, the HARQ feedback information includes a third information field and a fourth information field; alternatively, the third information field may be part1 as described above, and the fourth information field may be part2 as described above.

in a case that the indication information indicates that the terminal does not feed back the HARQ of the DCI, step 103, the network side device determines, according to the HARQ feedback information, HARQ feedback of the DCI-scheduled PDSCH, including:

taking the example shown in fig. 3 as an example, the terminal receives and demodulates the PDCCH in the nth slot, and receives and demodulates the scheduled PDSCH in the (n + 1) th slot according to the demodulated DCI information. If the terminal judges that the CRC check of the PDSCH fails and feeds back HARQ-ACK through the PUCCH resources appointed by the network side equipment at the n +5 th time slot, the terminal only feeds back the HARQ feedback of the PDSCH according to the indication of the network side or the predefined configuration, and the network side equipment retransmits the PDSCH at the subsequent time according to the indication of the terminal. And the fourth information field of the HARQ feedback information indicates the HARQ feedback of the PDSCH, and the third information field of the HARQ feedback information indicates the HARQ which does not feed back the DCI. In this way, when the network side device receives the HARQ feedback information, the network side device may determine, according to the indication in the third information field, the HARQ that does not include DCI in the HARQ feedback information, and thus, the network side device may determine the HARQ feedback of the PDSCH according to the indication in the fourth information field.

In the case that the indication information indicates the terminal to feed back the HARQ of the DCI, step 103, the determining, by the network side device according to the HARQ feedback information, the HARQ feedback of the DCI-scheduled PDSCH and/or the HARQ feedback of the DCI includes:

Similarly, as mentioned above, when the network side device receives the HARQ feedback information, the network side device determines that the HARQ feedback information includes an indication of HARQ for DCI according to the indication of the third information field, and thus, the network side device determines HARQ feedback for PDSCH and HARQ feedback for DCI according to the indication of the fourth information field.

As still another optional implementation, the HARQ feedback information includes a fifth information field and a sixth information field; alternatively, the fifth information field may be part1 as described above, and the sixth information field may be part2 as described above.

that is to say, the fifth information field is used to carry the number of HARQ feedbacks of DCI in the HARQ feedback information, and thus, the network side device may determine, in the sixth information field, the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the number of HARQ feedbacks of DCI carried in the fifth information field.

In this implementation manner, in step 103, the determining, by the network side device according to the HARQ feedback information, HARQ feedback of the DCI-scheduled PDSCH and/or HARQ feedback of the DCI includes:

That is to say, when receiving the HARQ feedback information, the network side device first determines the number of HARQ of DCI in the HARQ feedback information according to the part1 of the HARQ feedback information; secondly, determining the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the part2 part of the HARQ feedback information respectively.

As a further optional implementation manner, the HARQ feedback information includes a seventh information field and an eighth information field; optionally, the seventh information field is part1 as described above, and the eighth information field is part2 as described above.

The seventh information field carries HARQ feedback of the PDSCH, or the seventh information field carries HARQ feedback of the DCI, and the eighth information field is a null or invalid value; the eighth information field is a null or invalid value;

that is to say, the HARQ feedback information still includes two parts, namely part1 and part2, if the network side indicates that the terminal only feeds back HARQ of the PDSCH, then in the HARQ feedback information sent by the terminal, the HARQ feedback of the PDSCH is carried in part1, and part2 is an empty or invalid value; if the network side indicates that the terminal only feeds back the HARQ of the DCI, the HARQ feedback of the DCI is carried in part1 in the HARQ feedback information sent by the terminal, and part2 is a null or invalid value.

In this case, the determining, by the network side device according to the HARQ feedback information, HARQ feedback of the DCI scheduled PDSCH and/or HARQ feedback of the DCI includes:

that is, when the network side device determines that part1 of the HARQ feedback information carries the HARQ feedback of the PDSCH, and part2 is a null or invalid value, and when the network side device receives the HARQ feedback information sent by the terminal, the network side device determines the HARQ feedback of the PDSCH according to the information carried by part 1;

or, when the seventh information field carries the HARQ feedback of the DCI and the eighth information field is a null or invalid value, the network side device determines the HARQ feedback of the DCI according to the seventh information field;

that is, when the network side device determines that part1 of the HARQ feedback information carries the HARQ feedback of the DCI, and part2 is an empty or invalid value, and when the network side device receives the HARQ feedback information sent by the terminal, the network side device determines the HARQ feedback of the DCI according to the information carried by part 1. Thus, the feedback of the HARQ of the DCI in a fixed mode is realized, and the network side equipment can determine the HARQ feedback of the DCI according to the received HARQ feedback information.

As a specific example, the network side device issues a PDCCH in the nth slot, on which 5 pieces of DCI are carried: DCI1, DCI2, DCI3, DCI4, DCI5. And informing the terminal to schedule the PDSCHs 1 and PDSCH2 in the (n + 1) th time slot. And scheduling PDSCH3, PDSCH4 and PDSCH5 in the (n + 2) th time slot. And the terminal receives and demodulates the PDCCH in the nth time slot to obtain DCI3, DCI4 and DCI5. DCI1 and DCI2 are not obtained. The terminal performs HARQ feedback NACK, NACK, ACK, ACK and ACK for the demodulation of the 5 DCIs.

Here, it should be noted that, in the case that the HARQ feedback information includes two parts, namely, a first information field and a second information field, the overhead of the second information field is determined by the first information field.

The overhead of the second information field may be the number of HARQ feedbacks of DCI carried by the second information field.

Here, it should be further noted that, in the case that the HARQ feedback information includes two parts, namely, a first information field and a second information field, the HARQ feedback of the DCI is determined by the HARQ feedback of the PDSCH.

Wherein the determining of the HARQ feedback of the DCI by the HARQ feedback of the PDSCH may be: the content of the HARQ feedback of the DCI is determined by the content of the HARQ feedback of the PDSCH.

As a specific example, the network side device issues a PDCCH in the nth slot, on which 5 pieces of DCI are carried: DCI1, DCI2, DCI3, DCI4, DCI5. And informing the terminal to schedule the PDSCHs 1 and PDSCH2 in the (n + 1) th time slot. And scheduling PDSCH3, PDSCH4 and PDSCH5 in the (n + 2) th time slot. The terminal receives and demodulates the PDCCH in the nth time slot to obtain DCI2, DCI3, DCI4 and DCI5, but not DCI1; and the terminal receives and demodulates the PDSCH2 scheduled at the (n + 1) th time slot and the PDSCH3, the PDSCH4 and the PDSCH5 scheduled at the (n + 2) th time slot according to the demodulated DCI. The terminal judges that the CRC check of the PDSCH3 fails and the CRC checks of the PDSCH4 and the PDSCH5 pass. When the terminal performs HARQ feedback, the number of NACK fed back in part1 is 2. One NACK and one ACK are fed back in part2. The demodulation error of DCI1 and the demodulation accuracy of DCI3 are respectively corresponded.

Here, it should be noted that, in a case where the DCI is used to schedule the PDSCH and beam information indicating the PDSCH, the DCI satisfies a first condition, where the first condition includes at least one of:

the format of the DCI is a first DCI format; wherein, the first DCI format may be a newly defined new DCI format, and when the DCI format is the new DCI format, it is determined that the DCI is used for beam indication;

the scrambling ID of the DCI is a first scrambling ID; namely: the DCI scrambled by the first scrambling ID is used for beam indication;

the resource occupied by the DCI is a first resource; namely: DCI in a PDCCH carried on a first resource is used for beam indication;

a target indication field of the DCI is a first value; such as: a reserved bit of a certain field is used in DCI, e.g., "000" indicates that this DCI format is used for beam indication.

The values of at least two indication domains of the DCI are preset values; for example, a special bit combination of some fields is used in DCI to indicate that the DCI format is used for beam indication.

Table 1 below is a specific example of indicating DCI for beam indication by a target indication field of DCI:

TABLE 1

The base station issues a PDCCH carrying downlink DCI, which is indicated to the terminal for beam indication using the special of the two fields as in table 1 above. And the terminal receives and demodulates the PDCCH, reads the beam indication information according to the indication of the base station, and transmits/receives subsequent uplink/downlink channels/signals by using the beam indicated by the beam indication information.

In this optional implementation manner, when it is determined that the DCI satisfies at least one of the above first conditions, the DCI is determined to be used for beam indication, so that the beam indication of the DCI is distinguished from other schedules, and the problem that the existing DCI format1_1/1 \/2 format cannot distinguish between DCI used for beam indication or data scheduling is solved.

It should be noted that the first scrambling ID is a Transmission Configuration Indicator-Radio network temporary Identity (TCI-RNTI).

That is, by defining a new RNTI, such as: TCI-RNTI indicating that DCI CRC scrambled by TCI-RNTI is DCI for beam indication. The TCI-RNTI is configured by a Media Access Control Element (MAC CE) of the network device, and the configuration is similar to that of the C-RNTI in section 6.1.3.2 in TS 38.321.

As a specific example, the network side device issues a PDCCH carrying DCI, where CRC check of the carried DCI is scrambled by TCI-RNTI. Indicating the terminal this DCI is used for beam indication. And the terminal receives and demodulates the PDCCH, and the DCI is successfully verified and descrambled by using the TCI-RNTI configured by the network side equipment. The DCI judged by the terminal is used for beam indication and transmits/receives subsequent uplink/downlink channels/signals according to the beam indication information in the DCI.

Here, it should be further noted that the first resource includes: a predefined set of control resources and a predefined search space.

That is, as a specific example, DCI predefined in PDCCH carried on control resource set CORESET1 and Search space set2 is used to indicate a beam. In the nth time slot, the network side device sends a PDCCH on core set1 and Search space set2, and carries DCI for beam indication. And the terminal demodulates the PDCCH on the corresponding time-frequency resource according to the system predefining to obtain the DCI. And the terminal judges that the DCI is used for beam indication according to system predefinition, and transmits/receives subsequent uplink/downlink channels/signals according to the beam indication in the DCI.

On one hand, the HARQ feedback information is set as part1 and part2, so that the HARQ feedback information can include HARQ feedback of PDSCH and HARQ feedback of DCI, and the network side device can determine, according to the HARQ feedback information, whether the PDSCH decoding fails or NACK caused by DCI decoding failure; the HARQ feedback information may also include only the HARQ feedback of DCI, or only the HARQ feedback of PDSCH; thus, the content and the overhead of the HARQ feedback of the DCI can be determined according to the HARQ feedback of the PDSCH, namely: determining whether to feed back the HARQ of the DCI according to the HARQ feedback of the PDSCH; the fixed HARQ for feeding back DCI can be realized; on the other hand, when the DCI satisfies the first condition, the DCI is used for beam indication, so that the beam indication and the data scheduling of the DCI are distinguished.

As shown in fig. 4, an embodiment of the present application further provides a beam indication method, where the method includes:

step 401: the network side equipment sends a PDCCH bearing DCI to the terminal;

the format of the DCI is a first DCI format; wherein, the first DCI format may be a newly defined new DCI format, and when the DCI format is the new DCI format, it is determined that the DCI is used for the beam indication;

a target indication field of the DCI is a first value; such as: reserved bits of a certain field are used in DCI, for example, "000" indicates that this DCI format is used for beam indication.

Table 2 below is a specific example of indicating DCI for beam indication by a target indication field of DCI:

TABLE 2

The base station issues a PDCCH carrying downlink DCI, which is indicated to the terminal for beam indication using the special of the two fields as in table 2 above. And the terminal receives and demodulates the PDCCH, reads the beam indication information according to the indication of the base station, and transmits/receives subsequent uplink/downlink channels/signals by using the beam indicated by the beam indication information.

In the embodiment of the present application, when it is determined that the DCI satisfies at least one of the above first conditions, the DCI is determined to be used for beam indication, so that the beam indication of the DCI is distinguished from other schedules, and the problem that the existing DCI format1_1/1 \/2 format cannot distinguish the DCI used for beam indication or data scheduling is solved.

As an optional implementation manner, the first scrambling ID is a transmission configuration indication-radio network temporary identity TCI-RNTI.

That is, by defining a new RNTI, such as: TCI-RNTI, which indicates that DCI scrambled by CRC through TCI-RNTI is DCI used for beam indication. The TCI-RNTI is configured by a Media Access Control Element (MAC CE) of the network device, and the configuration is similar to that of the C-RNTI in section 6.1.3.2 in TS 38.321.

As an optional implementation, the first resource includes: a predefined set of control resources and a predefined search space.

That is, as a specific example, DCI predefined in PDCCH carried on control resource set CORESET1 and Search space set2 is used to indicate a beam. In the nth time slot, the network side device sends a PDCCH on core set1 and Search space set2, and carries DCI for beam indication. And the terminal demodulates the PDCCH on the corresponding time-frequency resource according to the system predefining to obtain the DCI. The terminal judges that the DCI is used for beam indication according to system predefinition, and the terminal transmits/receives subsequent uplink/downlink channels/signals according to the beam indication in the DCI.

According to the beam indication method in the embodiment of the application, under the condition that the DCI is determined to meet at least one of the first conditions, the DCI is determined to be used for beam indication, the beam indication of the DCI is distinguished from other scheduling, and the problem that the existing DCI format1_1/1 \/2 format cannot distinguish the DCI used for beam indication or data scheduling is solved.

As shown in fig. 5, an embodiment of the present application further provides a feedback method of HARQ, where the method includes:

step 501: a terminal receives a PDCCH (physical downlink control channel) carrying DCI (downlink control information) sent by network side equipment, wherein the DCI is used for scheduling a PDSCH (physical downlink shared channel) and indicating beam information of the PDSCH;

step 502: and the terminal sends HARQ feedback information to the network side equipment, wherein the HARQ feedback information is used for indicating the HARQ feedback of the PDSCH and/or the HARQ feedback of the DCI.

According to the feedback method of the HARQ of the embodiment of the application, firstly, a terminal receives a PDCCH which is used for bearing DCI and sent by network side equipment, wherein the DCI is used for scheduling a PDSCH and indicating beam information of the PDSCH; secondly, the terminal sends HARQ feedback information to the network side equipment, wherein the HARQ feedback information is used for indicating the HARQ feedback of the PDSCH and/or the HARQ feedback of the DCI. In this way, the network side device can determine whether the NACK is caused by incorrect decoding of DCI or PDSCH according to the HARQ feedback information indication NACK transmitted by the terminal.

As an optional implementation manner, the HARQ feedback information includes a first information field and a second information field; wherein the first information field carries HARQ feedback of the PDSCH, and the second information field carries HARQ feedback of the DCI.

Taking fig. 3 as an example, the network side device may send a PDCCH carrying DCI in the nth Time slot, and notify the terminal to schedule the PDSCH in the (n + 1) th Time slot through Time domain resource assignment in the DCI. And the network side equipment indicates the terminal to receive the beam used by the PDSCH through the TCI domain of the DCI, and simultaneously indicates the time slot in which the terminal sends the HARQ-ACK and the used PUCCH resource through the PUCCH resource indication domain and the PDSCH-to-HARQ _ feedback timing indicator. The value range of the PDSCH-to-HARQ _ feedback timing indicator is determined by the base station through a parameter dl-DataToUL-ACK configured by Radio Resource Control (RRC).

And the terminal receives and demodulates the PDCCH in the nth time slot, and receives and demodulates the scheduled PDSCH in the (n + 1) th time slot according to the demodulated DCI information. And the terminal judges that the Cyclic Redundancy Check (CRC) of the PDSCH fails and feeds back HARQ-ACK through PUCCH resources appointed by the network side equipment at the (n + 5) th time slot. The HARQ/ACK information fed back by the terminal includes two parts, i.e., a first information field and a second information field (the first information field may be part1 as described above, and the second information field may be part2 as described above). If the Part1 is NACK, the network side device is notified that the transmission of PDSCH fails, and if the Part2 is ACK, the network side device is notified that the DCI is correctly demodulated. The network side equipment retransmits the PDSCH at the subsequent time according to the instruction of the terminal, or the terminal judges that the CRC of the PDSCH succeeds, the terminal only feeds back that the content of part1 is ACK, and at the moment, the content of part2 is a null or invalid value.

the fourth information field carries HARQ feedback of the PDSCH under the condition that the indication information indicates that the terminal does not feed back the HARQ of the DCI; or, in a case that the indication information indicates that the terminal feeds back the HARQ of the DCI, the fourth information field carries the HARQ feedback of the PDSCH and the HARQ feedback of the DCI.

Taking the example shown in fig. 3 as an example, the terminal receives and demodulates the PDCCH at the nth time slot, and receives and demodulates the scheduled PDSCH at the (n + 1) th time slot according to the demodulated DCI information. If the terminal judges that the CRC check of the PDSCH fails and feeds back HARQ-ACK through the PUCCH resource appointed by the network side equipment at the (n + 5) th time slot, the terminal only feeds back the HARQ for the PDSCH according to the indication of the network side or the predefined configuration, and the network side equipment retransmits the PDSCH at the subsequent time according to the indication of the terminal. And the fourth information field of the HARQ feedback information indicates the HARQ feedback of the PDSCH, and the third information field of the HARQ feedback information indicates the HARQ which does not feed back the DCI. In this way, when the network side device receives the HARQ feedback information, the network side device may determine, according to the indication in the third information field, the HARQ that does not include DCI in the HARQ feedback information, and thus, the network side device may determine the HARQ feedback of the PDSCH according to the indication in the fourth information field.

That is to say, the fifth information field is used to carry the number of HARQ feedback of DCI in the HARQ feedback information, and thus, the network side device may determine, in the sixth information field, the HARQ feedback of PDSCH and the HARQ feedback of DCI according to the number of HARQ feedback of DCI carried in the fifth information field.

That is to say, the HARQ feedback information still includes two parts, part1 and part2, and if the network side instructs the terminal to feed back only the HARQ of the PDSCH, the HARQ feedback of the PDSCH is carried in part1, and part2 is an empty or invalid value in the HARQ feedback information sent by the terminal.

Further, as an optional implementation manner, in step 502, before the terminal sends HARQ feedback information to the network side device, the method further includes:

Further, as an optional implementation manner, before the step 502 sends HARQ feedback information to the network side device, the method further includes:

As a specific example, the network side device issues a PDCCH in the nth slot, on which 5 pieces of DCI are carried: DCI1, DCI2, DCI3, DCI4, DCI5. And informing the terminal to schedule PDSCH1 and PDSCH2 in the (n + 1) th time slot. And scheduling PDSCH3, PDSCH4 and PDSCH5 in the (n + 2) th time slot. The terminal receives and demodulates the PDCCH in the nth time slot to obtain DCI2, DCI3, DCI4 and DCI5, but does not obtain DCI1; and the terminal receives and demodulates the PDSCH2 scheduled at the (n + 1) th time slot and the PDSCH3, the PDSCH4 and the PDSCH5 scheduled at the (n + 2) th time slot according to the demodulated DCI. And the terminal judges that the CRC check of the PDSCH3 fails and the CRC checks of the PDSCH4 and the PDSCH5 pass. When the terminal performs HARQ feedback, the number of NACK fed back in part1 is 2. One NACK and one ACK are fed back in part2. The demodulation error of DCI1 and the demodulation accuracy of DCI3 are respectively corresponded.

Here, it should be noted that, in a case where the DCI is used to schedule the PDSCH and indicate beam information of the PDSCH, the DCI satisfies a first condition, where the first condition includes at least one of:

And the values of at least two indication domains of the DCI are preset values. For example, a special bit combination of some fields is used in DCI to indicate that the DCI format is used for beam indication.

As a specific example, the base station issues a PDCCH carrying downlink DCI, wherein the terminal is instructed to use the DCI for beam indication using the special of the two fields in table 1 as described above. And the terminal receives and demodulates the PDCCH, reads the beam indication information according to the indication of the base station, and transmits/receives subsequent uplink/downlink channels/signals by using the beam indicated by the beam indication information.

As an optional implementation manner, the first scrambling ID is a transmission configuration indicator-radio network temporary identity, TCI-RNTI.

That is, by defining a new RNTI, such as: TCI-RNTI indicating that DCI CRC scrambled by TCI-RNTI is DCI for beam indication. Wherein, the Media Access Control Element (MAC CE) of the network side device configures the TCI-

RNTI, the configuration of which is similar to that of C-RNTI in section 6.1.3.2 in TS 38.321.

As a specific example, the network side device issues a PDCCH carrying DCI, where CRC check of the carried DCI is scrambled by TCI-RNTI. The terminal is instructed that this DCI is used for beam indication. And the terminal receives and demodulates the PDCCH, and the DCI is successfully verified and descrambled by using the TCI-RNTI configured by the network side equipment. The DCI judged by the terminal is used for beam indication and transmits/receives subsequent uplink/downlink channels/signals according to the beam indication information in the DCI.

Further, as an optional implementation manner, the method further includes:

and under the condition that the terminal receives other DCIs which do not comprise beam information, the terminal transmits PDSCH or Physical Uplink Control Channel (PUCCH) scheduled by the other DCIs according to the target beam information.

Specifically, the determining, by the terminal, target beam information according to the HARQ feedback of the DCI and the predefined rule includes:

and the terminal determines the beam information indicated by one DCI in the DCIs with the HARQ feedbacks as ACK as the target beam information according to the predefined rule.

As a specific example, the network side device issues a PDCCH in the nth slot, on which three DCI are carried: DCI1, DCI2, DCI3; these DCIs may be used to indicate a reception/transmission beam of a subsequent PDSCH or PUSCH channel. The terminal receives and demodulates the PDCCH in the nth time slot to obtain DCI1 and DCI3, but does not obtain DCI2. Therefore, HARQ feedback performed by the terminal for demodulation of these DCIs is: ACK, NACK, ACK; and the terminal determines that the beam indicated by the network side equipment is the beam indicated by the DCI according to a predefined rule, and then the terminal receives/transmits the subsequent PDSCH or PUSCH by using the beam indicated by the DCI 3.

As shown in fig. 6, an embodiment of the present application further provides a beam indication method, where the method includes:

step 601: a terminal receives a PDCCH of DCI sent by network side equipment;

In the embodiment of the application, when the DCI is determined to meet at least one of the first conditions, the DCI is determined to be used for beam indication, so that the beam indication of the DCI is distinguished from other schedules, and the problem that the existing DCI format1_1/1 \/2 format cannot distinguish the DCI used for the beam indication or the data schedule is solved.

As an optional implementation manner, the first scrambling ID is a transmission configuration indication-radio network temporary identity TCI-RNTI;

As shown in fig. 7, an embodiment of the present application further provides a network-side device, which includes a memory 720, a transceiver 710, a processor 700:

a memory 720 for storing a computer program; a transceiver 710 for transceiving data under the control of the processor 700; a processor 700 for reading the computer program in the memory 720 and performing the following operations:

sending a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Information (DCI) to a terminal, wherein the DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) and indicating beam information of the PDSCH;

receiving HARQ feedback information sent by the terminal;

and determining the HARQ feedback of the PDSCH scheduled by the DCI and/or the HARQ feedback of the DCI according to the HARQ feedback information.

As an optional embodiment, the HARQ feedback information includes a first information field and a second information field; wherein the first information domain carries HARQ feedback of the PDSCH, and the second information domain carries HARQ feedback of the DCI;

the processor 700 is further configured to read the computer program in the memory 720 and perform the following operations:

As an optional embodiment, the HARQ feedback information includes a third information field and a fourth information field;

in case the indication information indicates that the terminal does not feed back HARQ of the DCI, the processor 700 is further configured to read the computer program in the memory and perform the following operations:

determining HARQ feedback of the PDSCH according to the third information domain and the fourth information domain;

in case the indication information indicates that the terminal feeds back HARQ of DCI, the processor 700 is further configured to read the computer program in the memory 720 and perform the following operations:

and determining the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the third information domain and the fourth information domain.

As an optional embodiment, the HARQ feedback information includes a fifth information field and a sixth information field;

and determining the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the fifth information field and the sixth information field.

As an optional embodiment, the HARQ feedback information includes a seventh information field and an eighth information field;

or, under the condition that the seventh information domain bears the HARQ feedback of the DCI, and the eighth information domain is a null or invalid value, determining the HARQ feedback of the DCI according to the seventh information domain.

As an alternative embodiment, the overhead of the second information field is determined by the first information field.

As an optional embodiment, the HARQ feedback of the DCI is determined by HARQ feedback of the PDSCH.

As an optional embodiment, in a case that the DCI is used to schedule a PDSCH and beam information indicating the PDSCH, the DCI satisfies a first condition, where the first condition includes at least one of:

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

As an optional embodiment, the first scrambling ID is a transmission configuration indicator-radio network temporary identity, TCI-RNTI;

Wherein in fig. 7 the bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented by processor 710, and various circuits, represented by memory 720, being linked together. The bus architecture 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 700 may be a number 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 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 710 in performing operations.

The processor 710 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.

In the embodiment of the application, one of the HARQ feedback information is set as part1 and part2, so that the HARQ feedback information may include HARQ feedback of PDSCH and HARQ feedback of DCI, and the network side device can determine, according to the HARQ feedback information, whether the PDSCH decoding fails or NACK caused by DCI decoding fails; the HARQ feedback information may also include only the HARQ feedback of DCI, or only the HARQ feedback of PDSCH; thus, the content and the overhead of the HARQ feedback of the DCI can be determined according to the HARQ feedback of the PDSCH, namely: determining whether to feed back the HARQ of the DCI according to the HARQ feedback of the PDSCH; the fixed HARQ of the feedback DCI can be realized; and under the condition that the DCI meets the first condition, the DCI is used for beam indication, so that the beam indication and the data scheduling of the DCI are distinguished.

The HARQ feedback method and the network side device are based on the same application concept, and because the principles of the method and the network side device for solving the problem are similar, the network side device and the method can be implemented by referring to each other, and repeated parts are not described again.

The embodiment of the present application further provides a network side device, which includes a memory, a transceiver, and a processor:

receiving HARQ feedback information sent by the terminal;

The architecture of the network side device of the present embodiment is the same as the architecture of the network side device of the previous embodiment, and reference may be made to fig. 7 for the architecture of the network side device of the present embodiment.

In the network side device of the embodiment of the present application, when it is determined that the DCI satisfies at least one of the first conditions, the DCI is determined to be used for beam indication, so that the beam indication of the DCI is distinguished from other schedules, and a problem that an existing DCI format1_1/1 \/2 format cannot distinguish DCI for beam indication or data scheduling is solved.

The beam indicating method and the network side device are based on the same application concept, and because the principles of solving the problems of the method and the network side device are similar, the implementation of the terminal and the method can be mutually referred, and repeated parts are not repeated.

As shown in fig. 8, an embodiment of the present application further provides a terminal, which includes a memory 820, a transceiver 810, a processor 800:

a memory 820 for storing a computer program; a transceiver 810 for transceiving data under the control of the processor; a processor 800 for reading the computer program in the memory 820 and performing the following operations:

As an optional embodiment, the HARQ feedback information includes a first information field and a second information field; wherein the first information domain carries HARQ feedback of the PDSCH, and the second information domain carries HARQ feedback of the DCI.

As an alternative embodiment, the processor 810 is further configured to read the computer program in the memory 820 and perform the following operations:

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

As an optional embodiment, the first scrambling ID is a transmission configuration indication-radio network temporary identity, TCI-RNTI;

As a specific embodiment, the processor 810 is further configured to read the computer program in the memory 820 and perform the following operations:

Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 810, and various circuits, represented by memory 820, being linked together. The bus architecture 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 800 may be a number 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 830 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 600 in performing operations.

Alternatively, the processor 810 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 have a multi-core architecture.

The processor is used for executing the method provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

In the embodiment of the application, firstly, a terminal receives a PDCCH carrying DCI sent by a network side device, where the DCI is used to schedule a PDSCH and indicate beam information of the PDSCH; secondly, the terminal sends HARQ feedback information to the network side equipment, wherein the HARQ feedback information is used for indicating the HARQ feedback of the PDSCH and/or the HARQ feedback of the DCI. In this way, the network side device can determine whether the NACK is caused by incorrect decoding of DCI or PDSCH according to the HARQ feedback information indication NACK transmitted by the terminal.

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

receiving a PDCCH of DCI sent by network side equipment;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

The architecture of the network side device of the present embodiment is the same as that of the network side device of the previous embodiment, and reference may be made to fig. 7 for the architecture of the network side device of the present embodiment.

As shown in fig. 9, an embodiment of the present application further provides a feedback apparatus for HARQ, including:

a sending unit 901, configured to send a physical downlink control channel PDCCH carrying downlink control information DCI to a terminal, where the DCI is used to schedule a physical downlink shared channel PDSCH and indicate beam information of the PDSCH;

a receiving unit 902, configured to receive HARQ feedback information sent by the terminal;

a determining unit 903, configured to determine, according to the HARQ feedback information, HARQ feedback of the DCI scheduled PDSCH and/or HARQ feedback of the DCI.

the determining unit 903 is specifically configured to:

the determining unit 903 is specifically configured to: under the condition that the indication information indicates that the terminal does not feed back the HARQ of the DCI, determining the HARQ feedback of the PDSCH according to the third information domain and the fourth information domain;

the determining unit 903 is further specifically configured to: and under the condition that the indication information indicates the terminal to feed back the HARQ of the DCI, determining the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the third information domain and the fourth information domain.

the determining unit 903 is specifically configured to: and determining the HARQ feedback of the PDSCH and the HARQ feedback of the DCI according to the fifth information domain and the sixth information domain.

the determining unit 903 is specifically configured to: determining the HARQ feedback of the PDSCH according to the seventh information domain under the condition that the seventh information domain bears the HARQ feedback of the PDSCH and the eighth information domain is a null or invalid value; or, determining the HARQ feedback of the DCI according to the seventh information field when the seventh information field carries the HARQ feedback of the DCI and the eighth information field is a null or invalid value.

Wherein the HARQ feedback of the DCI is determined by the HARQ feedback of the PDSCH.

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

The first scrambling ID is transmission configuration indication-radio network temporary identity (TCI-RNTI).

Wherein the first resource comprises: a predefined set of control resources and a predefined search space.

In this embodiment, first, the sending unit 901 sends a physical downlink control channel PDCCH carrying downlink control information DCI to the terminal, where the DCI is used to schedule a physical downlink shared channel PDSCH and indicate beam information of the PDSCH; secondly, the receiving unit 902 receives HARQ feedback information sent by the terminal; finally, determining unit 903 determines HARQ feedback of PDSCH scheduled by DCI and/or HARQ feedback of DCI according to the HARQ feedback information. In this way, the HARQ feedback apparatus can determine whether the NACK is due to the incorrect decoding of DCI or the incorrect decoding of PDSCH, when the HARQ feedback information transmitted by the terminal indicates NACK.

As shown in fig. 10, an embodiment of the present application further provides a beam indicating apparatus, including:

a transmitting unit 1001 configured to transmit a PDCCH carrying DCI to a terminal;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

As shown in fig. 11, an embodiment of the present application further provides a feedback apparatus for HARQ, including:

a receiving unit 1101, configured to receive a PDCCH carrying DCI transmitted by a network side device, where the DCI is used to schedule a PDSCH and indicate beam information of the PDSCH;

a sending unit 1102, configured to send HARQ feedback information to the network side device, so that the network side device determines HARQ feedback of the PDSCH and/or HARQ feedback of the DCI according to the HARQ feedback information.

Wherein the apparatus further comprises:

a first determining unit, configured to determine content of HARQ feedback of the PDSCH carried in the first information domain;

a second determining unit, configured to determine, according to the content of the HARQ feedback of the PDSCH, the content of the HARQ feedback of the DCI carried in the second information field.

Wherein the apparatus further comprises:

a third determining unit, configured to determine content of HARQ feedback of the PDSCH carried in the first information domain;

a fourth determining unit, configured to determine, according to the content of the HARQ feedback of the PDSCH, the number of HARQ feedbacks of the DCI carried in the second information field.

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

Wherein the apparatus further comprises:

a fifth determining unit, configured to determine target beam information according to the HARQ feedback of the DCI and a predefined rule;

and a transmission unit, configured to transmit, when receiving another DCI not including the beam information, the PDSCH or the PUSCH scheduled by the other DCI according to the target beam information.

The fifth determining unit is specifically configured to determine, according to the predefined rule, that beam information indicated by one DCI in DCIs with HARQ feedback of ACK is the target beam information.

In this embodiment of the present application, first, a receiving unit 1101 receives a PDCCH carrying DCI sent by a network side device, where the DCI is used to schedule a PDSCH and indicate beam information of the PDSCH; secondly, the sending unit 1102 sends HARQ feedback information to the network side device, where the HARQ feedback information is used to indicate HARQ feedback of the PDSCH and/or HARQ feedback of the DCI. In this way, the network side device can determine whether the NACK is caused by incorrect decoding of DCI or PDSCH according to the HARQ feedback information indication NACK transmitted by the terminal.

As shown in fig. 12, an embodiment of the present application further provides a beam indicating apparatus, including:

a receiving unit 1201, configured to receive a PDCCH of DCI transmitted by a network device;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

It should be noted that the apparatus provided in the embodiment of the present application 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.

It should be noted that, in the embodiment of the present application, the division of the unit is schematic, and is only one logic function division, and when the actual implementation is realized, another division manner may be provided. 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.

An embodiment of the present application further provides a processor-readable storage medium, which stores a computer program for causing the processor to execute the method described above. The processor-readable storage medium may 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.

Claims

1. A feedback method of hybrid automatic repeat request (HARQ), comprising:

the network side equipment sends a Physical Downlink Control Channel (PDCCH) carrying Downlink Control Information (DCI) to the terminal, wherein the DCI is used for scheduling a Physical Downlink Shared Channel (PDSCH) and indicating beam information of the PDSCH;

2. The method of claim 1, wherein the HARQ feedback information comprises a first information field and a second information field; wherein the first information domain carries HARQ feedback of the PDSCH, and the second information domain carries HARQ feedback of the DCI;

3. The method of claim 1, wherein the HARQ feedback information comprises a third information field and a fourth information field;

4. The method of claim 1, wherein the HARQ feedback information comprises a fifth information field and a sixth information field;

5. The method of claim 1, wherein the HARQ feedback information comprises a seventh information field and an eighth information field;

the network side equipment determines the HARQ feedback of the PDSCH according to the seventh information domain under the condition that the seventh information domain bears the HARQ feedback of the PDSCH and the eighth information domain is a null or invalid value;

or, when the seventh information field carries the HARQ feedback of the DCI and the eighth information field is a null or invalid value, the network side device determines the HARQ feedback of the DCI according to the seventh information field.

6. The method of claim 2, wherein the overhead of the second information field is determined by the first information field.

7. The method of claim 2, wherein HARQ feedback for the DCI is determined by HARQ feedback for the PDSCH.

8. The method of claim 1, wherein if the DCI is used for scheduling a PDSCH and beam information indicating the PDSCH, the DCI satisfies a first condition comprising at least one of:

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

9. The method of claim 8, wherein the first scrambling ID is a transmission configuration indication-radio network temporary identity (TCI-RNTI);

10. A method for beam indication, comprising:

the network side equipment sends a PDCCH bearing DCI to the terminal;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

11. The method of claim 10, wherein the first scrambling ID is a transmission configuration indication-radio network temporary identity (TCI-RNTI);

12. A feedback method of HARQ is characterized by comprising the following steps:

13. The method of claim 12, wherein the HARQ feedback information comprises a first information field and a second information field; wherein the first information field carries HARQ feedback of the PDSCH, and the second information field carries HARQ feedback of the DCI.

14. The method of claim 12, wherein the HARQ feedback information comprises a third information field and a fourth information field;

15. The method of claim 12, wherein the HARQ feedback information comprises a fifth information field and a sixth information field;

16. The method of claim 12, wherein the HARQ feedback information comprises a seventh information field and an eighth information field;

17. The method of claim 13, wherein before the terminal sends HARQ feedback information to the network side device, the method further comprises:

18. The method of claim 13, wherein before the terminal sends HARQ feedback information to the network side device, the method further comprises:

19. The method of claim 12, wherein in a case that the DCI is used for scheduling a PDSCH and beam information indicating the PDSCH, the DCI satisfies a first condition, the first condition comprising at least one of:

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

20. The method of claim 19, wherein the first scrambling ID is a transmission configuration indication-radio network temporary identity (TCI-RNT);

21. The method of claim 12, further comprising:

22. The method of claim 21, wherein the terminal determines the target beam information according to the HARQ feedback of the DCI and a predefined rule, comprising:

23. A method for beam indication, comprising:

a terminal receives a PDCCH of DCI sent by network side equipment;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

24. The method of claim 23, wherein the first scrambling ID is a transmission configuration indication-radio network temporary identity (TCI-RNTI);

25. A network-side device, comprising a memory, a transceiver, a processor:

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 HARQ feedback information sent by the terminal;

26. A network-side device, comprising a memory, a transceiver, a processor:

the network side equipment sends a PDCCH bearing DCI to the terminal;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

27. A terminal, comprising a memory, a transceiver, a processor:

28. A terminal, comprising a memory, a transceiver, a processor:

receiving a PDCCH of DCI sent by network side equipment;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

29. A feedback apparatus of HARQ, comprising:

a determining unit, configured to determine, according to the HARQ feedback information, HARQ feedback of the DCI-scheduled PDSCH and/or HARQ feedback of the DCI.

30. A beam pointing apparatus, comprising:

a sending unit, configured to send a PDCCH carrying DCI to a terminal;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

31. A feedback apparatus for HARQ, comprising:

32. A beam pointing apparatus, comprising:

a receiving unit, configured to receive a PDCCH of DCI transmitted by a network side device;

the format of the DCI is a first DCI format;

the scrambling ID of the DCI is a first scrambling ID;

the resource occupied by the DCI is a first resource;

a target indication field of the DCI is a first value;

and the values of at least two indication domains of the DCI are preset values.

33. 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 9; or the computer program is operative to cause the processor to perform the method of any of claims 10 to 11; or, the computer program is for causing the processor to perform the method of any one of claims 12 to 22; alternatively, the computer program is for causing the processor to perform the method of any of claims 23 to 24.