CN114124315A

CN114124315A - Information feedback method, information receiving method, terminal and network equipment

Info

Publication number: CN114124315A
Application number: CN202010885443.9A
Authority: CN
Inventors: 周雷; 邢艳萍; 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2022-03-01
Anticipated expiration: 2040-08-28
Also published as: WO2022042484A1; CN114124315B

Abstract

The invention provides an information feedback method, an information receiving method, a terminal and network equipment, wherein the method comprises the following steps: a terminal receives a first PDCCH sent by network equipment, wherein the first PDCCH is used for indicating the number of times of repeated transmission of the PDCCH; and the terminal feeds back the HARQ-ACK of the first PDCCH to the network equipment. The invention can improve the demodulation performance of the PDCCH of the terminal.

Description

Information feedback method, information receiving method, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information feedback method, an information receiving method, a terminal, and a network device.

Background

Physical Downlink Control Channel (PDCCH) repetition transmission (PDCCH) is supported in some communication systems (e.g., 5G systems). But currently the PDCCH repetition supported by these communication systems is semi-statically configured. In addition, some special terminals are tailored in terms of capabilities or complexity relative to general-purpose terminals, such as: the Redcap terminal may specifically support the maximum bandwidth clipping (e.g., reducing the bandwidth from 100MHz to 20 MHz), and the number of antennas is reduced (e.g., reducing the number of 4 receiving antennas to 2 or 1 receiving antenna, which may cause the number of PDCCH reptitions performed by the terminal to be inconsistent with the understanding of the network device on the number of PDCCH reptitions, thereby affecting the demodulation performance of the PDCCH of the terminal and further causing the demodulation performance of the PDCCH of the terminal to be lower.

Disclosure of Invention

The embodiment of the invention provides an information feedback method, an information receiving method, a terminal and network equipment, and aims to solve the problem of low demodulation performance of a PDCCH (physical downlink control channel) of the terminal.

The embodiment of the invention provides an information feedback method, which is characterized by comprising the following steps:

a terminal receives a first PDCCH sent by network equipment, wherein the first PDCCH is used for indicating the number of times of repeated transmission of the PDCCH;

the terminal feeds back a Hybrid Automatic Repeat request Acknowledgement (HARQ-ACK) of the first PDCCH to the network device.

Optionally, the first PDCCH includes:

a Cyclic Redundancy Check (CRC) code is a PDCCH scrambled with a new Radio Network Temporary Identifier (RNTI), wherein the new RNTI is a RNTI newly defined for the first PDCCH.

Optionally, the PDCCH repetition transmission times indicated by the first PDCCH are updated PDCCH repetition transmission times.

Optionally, the first PDCCH is transmitted periodically or aperiodically.

Optionally, one HARQ-ACK is fed back for K transmissions of the first PDCCH, where the HARQ-ACK is 1 bit, and K is an integer greater than or equal to 1.

Optionally, the HARQ-ACK uses a dynamic codebook, or the HARQ-ACK uses a semi-static codebook.

Optionally, the HARQ-ACK is transmitted separately, or the HARQ-ACK is transmitted in multiplexing with other HARQ-ACKs.

Optionally, when the HARQ-ACK is multiplexed with other HARQ-ACKs and the HARQ-ACK uses a dynamic codebook: the first PDCCH comprises a downlink allocation index, wherein the downlink allocation index is used for determining the mapping position of the HARQ-ACK in a dynamic codebook, and the downlink allocation index is a counting downlink allocation index C-DAI, or comprises the C-DAI and a total downlink allocation index T-DAI; or

In the case that the HARQ-ACK is multiplexed with other HARQ-ACK transmissions and the HARQ-ACK employs a semi-static codebook: and the feedback codebook for multiplexing transmission is obtained by adding A bits to a semi-static codebook determined based on the other HARQ-ACKs, wherein the A bits are the HARQ-ACKs of the first PDCCH, and A is an integer greater than or equal to 1.

Optionally, a is equal to the number of the first PDCCHs for performing HARQ-ACK feedback on the feedback time domain resources, where the feedback time domain resources are the time domain resources for the multiplexing transmission.

Optionally, the other HARQ-ACKs include:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

Optionally, the feedback time domain resource of the HARQ-ACK is determined according to an offset value, where the offset value is an offset value included in the first PDCCH, or the offset value is a preconfigured offset value.

The embodiment of the invention also provides an information receiving method, which comprises the following steps:

the network equipment sends a first Physical Downlink Control Channel (PDCCH) to a terminal, wherein the first PDCCH is used for indicating the repeated transmission times of the PDCCH;

and the network equipment receives HARQ-ACK (hybrid automatic repeat request-acknowledgement) of the first PDCCH fed back by the terminal.

Optionally, the first PDCCH includes:

and the cyclic redundancy check CRC code adopts a PDCCH scrambled by a new radio network temporary identifier RNTI, wherein the new RNTI is the RNTI newly defined for the first PDCCH.

Optionally, the first PDCCH is transmitted periodically or aperiodically.

Optionally, when the HARQ-ACK is multiplexed with other HARQ-ACKs and the HARQ-ACK uses a dynamic codebook: the first PDCCH comprises a Downlink allocation Index, wherein the Downlink allocation Index is used for determining a mapping position of the HARQ-ACK in a dynamic codebook, and the Downlink allocation Index is a counting Downlink allocation Index (C-DAI), or the Downlink allocation Index comprises the C-DAI and a Total Downlink allocation Index (T-DAI); or

Optionally, the other HARQ-ACKs include:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

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

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:

receiving a first Physical Downlink Control Channel (PDCCH) sent by network equipment, wherein the first PDCCH is used for indicating the repeated transmission times of the PDCCH;

and feeding back hybrid automatic repeat request acknowledgement (HARQ-ACK) of the first PDCCH to the network equipment.

Optionally, the first PDCCH includes:

An embodiment of the present invention further provides a network device, including a memory, a transceiver, and a processor, where:

sending a first Physical Downlink Control Channel (PDCCH) to a terminal, wherein the first PDCCH is used for indicating the repeated transmission times of the PDCCH;

and receiving hybrid automatic repeat request acknowledgement (HARQ-ACK) of the first PDCCH fed back by the terminal.

Optionally, the first PDCCH includes:

An embodiment of the present invention further provides a terminal, including:

a receiving unit, configured to receive a first physical downlink control channel PDCCH sent by a network device, where the first PDCCH is used to indicate PDCCH retransmission times;

a feedback unit, configured to feed back a hybrid automatic repeat request acknowledgement HARQ-ACK of the first PDCCH to the network device.

An embodiment of the present invention further provides a network device, including:

a sending unit, configured to send a first physical downlink control channel PDCCH to a terminal, where the first PDCCH is used to indicate PDCCH retransmission times;

a receiving unit, configured to receive a hybrid automatic repeat request acknowledgement HARQ-ACK of the first PDCCH fed back by the terminal.

An embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute the information feedback method provided in the embodiment of the present invention, or the computer program is configured to enable the processor to execute the information receiving method provided in the embodiment of the present invention.

In the embodiment of the invention, a terminal receives a first PDCCH sent by network equipment, wherein the first PDCCH is used for indicating the number of times of repeated transmission of the PDCCH; and the terminal feeds back the HARQ-ACK of the first PDCCH to the network equipment. Therefore, the network equipment informs the terminal of the PDCCH repeated transmission times and the terminal reports the corresponding HARQ-ACK, so that the terminal and the network equipment understand the PDCCH repeated transmission times consistently, and the demodulation performance of the PDCCH of the terminal is improved.

Drawings

FIG. 1 is a schematic diagram of a network architecture in which the present invention may be implemented;

fig. 2 is a flowchart of an information feedback method according to an embodiment of the present invention;

fig. 3 is a flowchart of an information receiving method according to an embodiment of the present invention;

fig. 4 is a diagram illustrating a first PDCCH configuration according to an embodiment of the present invention;

fig. 5 is a schematic diagram of HARQ-ACK feedback provided in an embodiment of the present invention;

fig. 6 is a diagram illustrating another HARQ-ACK feedback provided by an embodiment of the present invention;

fig. 7 is a diagram illustrating another HARQ-ACK feedback provided by an embodiment of the present invention;

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

fig. 9 is a block diagram of a network device according to an embodiment of the present invention;

fig. 10 is a block diagram of another terminal provided in an embodiment of the present invention;

fig. 11 is a block diagram of another network device according to an embodiment of the present invention.

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.

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B 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.

The term "plurality" in the embodiments of the present invention means two or more, and other terms are similar thereto.

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

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

The technical scheme provided by the embodiment of the invention can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (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), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio system (NR 5, WiMAX) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a network architecture to which the present invention is applicable, and as shown in fig. 1, includes a terminal 11 and a network device 12.

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

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

The network device and the terminal may each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission, and the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

Referring to fig. 2, fig. 2 is a flowchart of an information feedback method according to an embodiment of the present invention, as shown in fig. 2, including the following steps:

step 201, a terminal receives a first PDCCH sent by a network device, wherein the first PDCCH is used for indicating PDCCH repeat transmission (PDCCH repetition) times;

step 202, the terminal feeds back the HARQ-ACK of the first PDCCH to the network equipment.

In the embodiment of the present invention, the first PDCCH may be understood as a PDCCH for indicating the number of PDCCH retransmission times, and of course, the first PDCCH may or may not indicate other information besides the number of PDCCH retransmission times, which is not limited herein. And the other PDCCHs may be referred to as a second PDCCH or a third PDCCH, etc.

In addition, the first PDCCH may be a repeated transmission, for example: the transmission is repeated K times, although this is not limiting, for example: repeated transmissions, such as one transmission, may not be employed.

The HARQ-ACK of the first PDCCH may be an ACK or a NACK, thereby helping the network device to recognize whether the indicated number of repeated transmissions is correctly received by the terminal.

In the embodiment of the invention, the network equipment informs the terminal of the PDCCH repeated transmission times and the terminal reports the corresponding HARQ-ACK, so that the terminal and the network equipment understand the PDCCH repeated transmission times consistently, and the demodulation performance of the PDCCH of the terminal is improved, for example: the terminal can be prevented from performing useless PDCCH detection due to the fact that the PDCCH repeated transmission times understood by the terminal is higher than the PDCCH repeated transmission times understood by the network side equipment, or the terminal can be prevented from missing some PDCCH detections due to the fact that the PDCCH repeated transmission times understood by the terminal is smaller than the PDCCH repeated transmission times understood by the network side equipment.

It should be noted that, in the embodiment of the present invention, the terminal may be a Redcap terminal or a general-purpose terminal.

As an optional implementation manner, the first PDCCH includes:

and the CRC code adopts a PDCCH scrambled by a new RNTI, wherein the new RNTI is a newly defined RNTI for the first PDCCH.

The new RNTI may be referred to as a PDCCH Radio Network Temporary Identity (PR-RNTI) with repeated transmission times, which is not limited, for example: other names are also possible. And the new RNTI may be a terminal-specific RNTI, such as: the network device configures a corresponding new RNTI for each terminal, which is not limited, for example: multiple terminals may share the same new RNTI.

In this embodiment, since the first PDCCH is a PDCCH scrambled by a CRC code using a new RNTI, the terminal can accurately identify which PDCCHs are the first PDCCH, for example: when the terminal detects a PDCCH with CRC scrambling using PR-RNTI, the terminal knows that the PDCCH is used for indicating the number of repeated transmission of the PDCCH.

As an optional implementation manner, the PDCCH indicated by the first PDCCH is repeated for an updated number of PDCCH repeated transmissions.

The updating of the PDCCH retransmission times may be that the network device may update the PDCCH retransmission times according to a channel condition, a terminal service, or a terminal capability.

In this embodiment, since the terminal is notified of the updated PDCCH retransmission times through the first PDCCH, the network device can be supported to update the PDCCH retransmission times in time, so as to further improve the demodulation performance of the PDCCH of the terminal.

As an optional implementation, the first PDCCH is transmitted periodically or aperiodically.

The period may be configured by a higher layer signaling, and the first PDCCH may be transmitted in a specific time domain resource, for example: in a particular listening occasion (MO) in certain time slots.

The aperiodic transmission can be dynamically sent by the network device.

As an optional implementation manner, one HARQ-ACK is fed back for K transmissions of the first PDCCH, where the one HARQ-ACK is 1 bit, and K is an integer greater than or equal to 1.

The K transmissions may be repeated K times by the first PDCCH.

The first PDCCH corresponds to 1-bit HARQ-ACK, which can reduce signaling overhead. For example: if the first PDCCH itself corresponds to K transmissions, the HARQ-ACK feedback information reflects a demodulation result obtained after the K transmissions based on the first PDCCH are combined.

As an optional implementation manner, the HARQ-ACK uses a dynamic codebook, or the HARQ-ACK uses a semi-static codebook.

The dynamic codebook may be a Type 2HARQ-ACK codebook (Type-2 HARQ-ACK codebook), and the semi-static codebook may be a Type 1HARQ-ACK codebook (Type-1 HARQ-ACK codebook).

In addition, the dynamic codebook or the semi-static codebook can be adopted according to the actual situation, so as to improve the flexibility of the HARQ-ACK.

As an optional implementation mode, the HARQ-ACK is transmitted separately, or the HARQ-ACK is transmitted in a multiplexing mode with other HARQ-ACK.

Wherein the other HARQ-ACKs may be one or more HARQ-ACKs whose feedback time domain resource is the same as the feedback time domain resource of the HARQ-ACK of the first PDCCH.

Optionally, the other HARQ-ACKs include:

physical downlink shared channel (HARQ-ACK) of PDSCH scheduled by PDCCH.

For example: when the first PDCCH and the PDSCH scheduled by the PDCCH perform HARQ-ACK feedback (or referred to as AN feedback, a indicates ACK, and N indicates NACK) in the same time slot or sub-time slot, the first PDCCH and the HARQ-ACK of the PDSCHs are multiplexed and transmitted in the time slot or sub-time slot.

In the embodiment, the HARQ-ACK and other HARQ-ACK multiplexing transmission are supported, so that the transmission resource can be saved.

Optionally, when the HARQ-ACK is multiplexed with other HARQ-ACKs and the HARQ-ACK uses a dynamic codebook: the first PDCCH comprises a downlink allocation index, wherein the downlink allocation index is used for determining the mapping position of the HARQ-ACK in a dynamic codebook, and the downlink allocation index is a counting downlink allocation index C-DAI, or the downlink allocation index comprises the C-DAI and a total downlink allocation index T-DAI.

In this embodiment, the mapping position of the HARQ-ACK of the first PDCCH in the dynamic codebook may be determined according to the downlink allocation index of the first PDCCH.

Optionally, when the HARQ-ACK is multiplexed with other HARQ-ACKs and the HARQ-ACK uses a semi-static codebook: and the feedback codebook for multiplexing transmission is obtained by adding A bits to a semi-static codebook determined based on the other HARQ-ACKs, wherein the A bits are the HARQ-ACKs of the first PDCCH, and A is an integer greater than or equal to 1.

The semi-static codebook determined by the other HARQ-ACKs may be a semi-static HARQ-ACK feedback codebook determined according to a protocol definition, and then a bit is added to the codebook to obtain a final feedback codebook.

For example: and if there are HARQ-ACK feedbacks of 2 first PDCCHs in the feedback time domain resource, then a is equal to 2, where the 2 first PDCCHs are different PDCCHs, and if there are HARQ-ACK feedbacks of 1 first PDCCH in the feedback time domain resource, then a is equal to 1.

Further, the number of the first PDCCH for performing HARQ-ACK feedback on the feedback time domain resource may be that the feedback time domain set determined by the feedback time slot resource (e.g., the uplink time slot or the sub-time slot) based on the K1 set includes the number of MOs capable of transmitting the first PDCCH, where K1 may represent a time interval between the PDCCH or the PDSCH and the corresponding HARQ-ACK.

In the embodiment, since A bits can be added to the semi-static codebook determined based on other HARQ-ACK, the complexity of HARQ-ACK multiplexing transmission can be reduced.

As an optional implementation manner, the feedback time domain resource of the HARQ-ACK is determined according to an offset value, where the offset value is an offset value included in the first PDCCH, or the offset value is a preconfigured offset value.

When the offset value is the offset value included in the first PDCCH, the first PDCCH may include a feedback timing indication field, so that a feedback time domain resource, such as a time slot or a sub-time slot, in which the HARQ-ACK transmission of the first PDCCH is located may be determined according to the offset value indicated by the indication field and the time slot in which the first PDCCH is located.

When the offset value is a preconfigured offset value, the first PDCCH itself may not include a feedback timing indication field, so that a feedback time domain resource, such as a time slot or a sub-time slot, in which the HARQ-ACK of the first PDCCH is transmitted may be determined according to the preconfigured offset value and the time slot in which the first PDCCH is transmitted. The preconfigured offset value may be preconfigured by higher layer signaling or agreed by a protocol.

Referring to fig. 3, fig. 3 is a flowchart of an information receiving method according to an embodiment of the present invention, as shown in fig. 3, including the following steps:

301, a network device sends a first PDCCH to a terminal, where the first PDCCH is used to indicate PDCCH retransmission times;

step 302, the network device receives HARQ-ACK of the first PDCCH fed back by the terminal.

Optionally, the first PDCCH includes:

Optionally, the first PDCCH is transmitted periodically or aperiodically.

Optionally, the other HARQ-ACKs include:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

It should be noted that, this embodiment is used as an implementation of a network device corresponding to the embodiment shown in fig. 2, and specific implementation of this embodiment may refer to the relevant description of the embodiment shown in fig. 2, so that, in order to avoid repeated descriptions, this embodiment is not described again, and the same beneficial effects may also be achieved.

The method provided by the embodiments of the present invention is illustrated by two embodiments below:

example 1:

in this embodiment, the HARQ-ACK uses a dynamic HARQ-ACK codebook for feedback, which may specifically be as follows:

the first PDCCH can adopt a new radio network temporary identifier PR-RNT, and when the terminal detects the PDCCH which is subjected to CRC scrambling by PR-RNTI, the terminal knows the PDCCH is the first PDCCH. The network device may allocate one PR-RNTI for each terminal through higher layer signaling or through DCI.

The range of values of PR-RNTI can be shown in the following table 1:

table 1:

the first PDCCH is transmitted periodically with a period configured by higher layer signaling, i.e. only in certain MOs in certain specific frames/slots. For example: the configuration period of the first PDCCH may be as shown in fig. 4, where in fig. 4, the configuration period of the first PDCCH is M frames, and there are 1 or more first PDCCHs every M frames, and (SFN/M) ═ 0 is a starting frame. And RepK denotes the number of PDCCH repeated transmissions in fig. 4.

The HARQ-ACK feedback mechanism of the first PDCCH using the dynamic codebook may be as shown in fig. 5, where the first PDCCH corresponds to K transmissions, and the K repeated transmissions of the first PDCCH correspond to 1-bit HARQ-ACK; when the first PDCCH and the PDSCH with PDCCH scheduling are supported to perform HARQ-ACK feedback in the same time slot/sub-time slot, the first PDCCH at least comprises a C-DAI, and the C-DAI is used for determining the mapping position of the first PDCCH in a dynamic codebook. As shown in fig. 5, the K1 feedback set {1,3} of the dynamic codebook includes a C-DAI corresponding to K1 ═ 3 and a C-DAI corresponding to K1 ═ 1 and a C-DAI of 2 in the feedback set. And the finally determined bit number of the HARQ-ACK feedback is 2, wherein 1 bit corresponds to PDSCH feedback, and 1 bit corresponds to first PDCCH feedback.

In fig. 5, the PDCCHs in the time slot n +2 and the time slot n +3 are K transmissions of the first PDCCH, and a bundle feedback (bundle feedback) is repeated for the first PDCCH, that is, only one HARQ-ACK is fed back.

Further, in the case of multiple carriers, the HARQ-ACK feedback mechanism of the first PDCCH employing the dynamic codebook may be as shown in fig. 6. The first PDCCH corresponds to K transmissions, and the K transmissions of the first PDCCH correspond to 1-bit HARQ-ACK; when the HARQ-ACK feedback is carried out on the first PDCCH and the PDSCH with PDCCH scheduling in the same time slot/sub-time slot, aiming at the condition of multiple carriers, the first PDCCH at least comprises C-DAI (C-DAI + T-DAI in the case of multiple carriers) and is used for determining the mapping position of the first PDCCH in a dynamic codebook. In fig. 6, there are two carriers carrying downlink data, the feedback set of K1 is {1,2,3}, the terminal receives one PDSCH and one first PDCCH on CC1, and only includes one 2-bit C _ DAI on CC2 due to the fixed size of the received fallback dci (fallback dci) and thus there is no T-DAI. The fallback DCI also schedules one PDSCH. The codebook size for feedback is thus 3 bits, where 2 bits correspond to PDSCH feedback and 1 bit corresponds to the first PDCCH feedback.

Example 2:

in this embodiment, an example of feedback is performed by using a static codebook for HARQ-ACK, which may specifically be as follows:

a first PDCCH HARQ-ACK feedback mechanism using a semi-static codebook may be as shown in fig. 7. For a certain UL time slot/sub-time slot, determining a semi-static HARQ-ACK feedback codebook according to protocol convention, then adding HARQ-ACK of a first PDCCH needing HARQ-ACK feedback in the UL time slot/sub-time slot in the determined HARQ-ACK codebook, specifically increasing the number of bits, depending on the number of HARQ-ACK feedback possibly carried out on the first PDCCH in the UL time slot/sub-time slot, namely determining the number of feedback bits needing to be increased by the UL time slot/sub-time slot based on the number of MOs which can transmit the first PDCCH and are contained in a feedback time slot set determined by a K1 set. In fig. 7, the feedback set of K1 is {1,2,3,4}, and in the feedback set of K1, there may be 4 PDSCHs and 1 first PDCCH, so that it can be determined that the feedback codebook is 5 bits, wherein 4 bits are used for HARQ-ACK feedback of PDSCH and 1 bit is used for HARQ-ACK feedback of first PDCCH.

In the embodiment of the invention, the communication mechanism between the network equipment and the terminal aiming at the PDCCH repeated transmission frequency updating mechanism can be more efficient and accurate by introducing the first PDCCH for bearing the indicating information for indicating the PDCCH repeated transmission frequency and carrying out the corresponding HARQ-ACK feedback mechanism by the terminal.

Referring to fig. 8, fig. 8 is a block diagram of a terminal according to an embodiment of the present invention, as shown in fig. 8, including a memory 820, a transceiver 800, and a processor 810:

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

A transceiver 800 for receiving and transmitting data under the control of a processor 810.

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 800 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 any method provided by the embodiment of the invention according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Optionally, the first PDCCH includes:

Optionally, the first PDCCH is transmitted periodically or aperiodically.

Optionally, the other HARQ-ACKs include:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

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

Referring to fig. 9, fig. 9 is a block diagram of a network device according to an embodiment of the present invention, as shown in fig. 9, including a memory 920, a transceiver 900, and a processor 910:

a memory 920 for storing a computer program; a transceiver 900 for transceiving data under the control of the processor 910; a processor 910 configured to read the computer program in the memory 920 and perform the following operations:

A transceiver 900 for receiving and transmitting data under the control of a processor 910.

Wherein in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 910, and various circuits, represented by memory 920, 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 900 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 910 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 910 in performing operations.

The processor 910 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 be a multi-core architecture.

Optionally, the first PDCCH includes:

Optionally, the first PDCCH is transmitted periodically or aperiodically.

Optionally, the other HARQ-ACKs include:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

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

Referring to fig. 10, fig. 10 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 10, the terminal 1000 includes:

a receiving unit 1001, configured to receive a first physical downlink control channel PDCCH sent by a network device, where the first PDCCH is used to indicate PDCCH retransmission times;

a feedback unit 1002, configured to feedback a HARQ-ACK for HARQ-ACK of the first PDCCH to the network device.

Optionally, the first PDCCH includes:

Optionally, the first PDCCH is transmitted periodically or aperiodically.

Optionally, the other HARQ-ACKs include:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

Referring to fig. 11, fig. 11 is a structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 11, the network device 1100 includes:

a sending unit 1101, configured to send a first physical downlink control channel PDCCH to a terminal, where the first PDCCH is used to indicate a PDCCH retransmission number;

a receiving unit 1102, configured to receive a hybrid automatic repeat request acknowledgement HARQ-ACK of the first PDCCH fed back by the terminal.

Optionally, the first PDCCH includes:

Optionally, the first PDCCH is transmitted periodically or aperiodically.

Optionally, the other HARQ-ACKs include:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

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

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

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (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 invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

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

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

Claims

1. An information feedback method, comprising:

a terminal receives a first Physical Downlink Control Channel (PDCCH) sent by network equipment, wherein the first PDCCH is used for indicating the repeated transmission times of the PDCCH;

and the terminal feeds back the hybrid automatic repeat request acknowledgement HARQ-ACK of the first PDCCH to the network equipment.

2. The method of claim 1, wherein the first PDCCH comprises:

3. The method of claim 1, wherein the first PDCCH indicates a PDCCH repetition transmission number that is an updated PDCCH repetition transmission number.

4. The method of claim 1, wherein the first PDCCH is transmitted periodically or aperiodically.

5. The method of claim 1, wherein one HARQ-ACK is fed back for K transmissions of the first PDCCH, the one HARQ-ACK being 1 bit, K being an integer greater than or equal to 1.

6. The method of claim 1, wherein the HARQ-ACK employs a dynamic codebook or the HARQ-ACK employs a semi-static codebook.

7. The method of claim 1, wherein the HARQ-ACK is transmitted separately or the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission.

8. The method of claim 7, wherein, where the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission, and the HARQ-ACK employs a dynamic codebook: the first PDCCH comprises a downlink allocation index, wherein the downlink allocation index is used for determining the mapping position of the HARQ-ACK in a dynamic codebook, and the downlink allocation index is a counting downlink allocation index C-DAI, or comprises the C-DAI and a total downlink allocation index T-DAI; or

9. The method of claim 8, wherein a is equal to a number of first PDCCHs for HARQ-ACK feedback in a feedback time domain resource, the feedback time domain resource being a time domain resource of the multiplexed transmission.

10. The method of claim 8, wherein the other HARQ-ACKs comprise:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

11. The method of claim 1, wherein the feedback time domain resource for the HARQ-ACK is determined according to an offset value, wherein the offset value is an offset value included in the first PDCCH, or wherein the offset value is a pre-configured offset value.

12. An information receiving method, comprising:

13. The method of claim 12, wherein the first PDCCH comprises:

14. The method of claim 12, wherein the first PDCCH indicates a PDCCH retransmission number that is an updated PDCCH retransmission number.

15. The method of claim 12, wherein the first PDCCH is transmitted periodically or aperiodically.

16. The method of claim 12, wherein one HARQ-ACK is fed back for K transmissions of the first PDCCH, the one HARQ-ACK being 1 bit, K being an integer greater than or equal to 1.

17. The method of claim 12, wherein the HARQ-ACK employs a dynamic codebook or the HARQ-ACK employs a semi-static codebook.

18. The method of claim 12, wherein the HARQ-ACK is transmitted separately or the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission.

19. The method of claim 18, wherein, where the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission, and the HARQ-ACK employs a dynamic codebook: the first PDCCH comprises a downlink allocation index, wherein the downlink allocation index is used for determining the mapping position of the HARQ-ACK in a dynamic codebook, and the downlink allocation index is a counting downlink allocation index C-DAI, or comprises the C-DAI and a total downlink allocation index T-DAI; or

20. The method of claim 19, wherein a is equal to a number of first PDCCHs for HARQ-ACK feedback in a feedback time domain resource, the feedback time domain resource being a time domain resource of the multiplexed transmission.

21. The method of claim 19, wherein the other HARQ-ACKs comprise:

HARQ-ACK of a Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH.

22. The method of claim 12, wherein the feedback time domain resource for the HARQ-ACK is determined according to an offset value, wherein the offset value is an offset value included in the first PDCCH, or wherein the offset value is a pre-configured offset value.

23. A terminal comprising a memory, a transceiver, and a processor, wherein:

24. The terminal of claim 23, wherein the first PDCCH comprises:

25. The terminal of claim 23, wherein the first PDCCH indicates a PDCCH retransmission number that is an updated PDCCH retransmission number.

26. The terminal of claim 23, wherein the HARQ-ACK is transmitted separately or the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission.

27. The terminal of claim 26, wherein in the case that the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission, and the HARQ-ACK employs a dynamic codebook: the first PDCCH comprises a downlink allocation index, wherein the downlink allocation index is used for determining the mapping position of the HARQ-ACK in a dynamic codebook, and the downlink allocation index is a counting downlink allocation index C-DAI, or comprises the C-DAI and a total downlink allocation index T-DAI; or

28. A network device comprising a memory, a transceiver, and a processor, wherein:

29. The network device of claim 28, wherein the first PDCCH comprises:

30. The network device of claim 28, wherein the first PDCCH indicates a PDCCH retransmission number that is an updated PDCCH retransmission number.

31. The network device of claim 28, wherein the HARQ-ACK is transmitted separately or the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission.

32. The network device of claim 31, wherein where the HARQ-ACK is multiplexed with other HARQ-ACKs for transmission, and the HARQ-ACK employs a dynamic codebook: the first PDCCH comprises a downlink allocation index, wherein the downlink allocation index is used for determining the mapping position of the HARQ-ACK in a dynamic codebook, and the downlink allocation index is a counting downlink allocation index C-DAI, or comprises the C-DAI and a total downlink allocation index T-DAI; or

33. A terminal, comprising:

34. A network device, comprising:

35. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the information feedback method of any one of claims 1 to 11, or the computer program for causing the processor to execute the information receiving method of any one of claims 12 to 22.