HARQ Feedback Method, Terminal, and Base Station for Multicast and / or Broadcast Services

Abstract

The present disclosure discloses a hybrid automatic repeat request (HARQ) feedback method for a multicast and / or broadcast service, a terminal, and a base station, in which the method includes: a terminal receives first indication information transmitted from a network, the first indication information being used to indicate at least one of a physical downlink control channel (PDCCH) detection operation, a transmission mode of the multicast and / or broadcast service, and a physical downlink shared channel (PDSCH) reception operation; and the terminal determines a physical uplink control channel (PUCCH) resource used for performing HARQ feedback for the PDSCH according to the first indication information.

Description

Technical Field

[0001] (Cross - reference to Related Applications) This disclosure is filed based on a Chinese patent application with an application number of 202110220076.5 and a filing date of February 26, 2021, claims the priority based on the Chinese patent application, and all the contents of the Chinese patent application are incorporated into this disclosure by reference.

[0002] This disclosure relates to the field of mobile communication technologies, and in particular, to a hybrid automatic repeat request (HARQ) feedback method for multicast and / or broadcast services, a terminal, and a base station.

Background Art

[0003] There are two wireless transmission modes in the multicast and / or broadcast technology of the NR (New Radio) system. For one of the wireless transmission modes, it is the Point to Multiple Point (PTM) mode, which adopts a scheme similar to Single Cell (SC)-PTM in the Long Time Evolution (LTE) system. The network side uses a common radio network temporary identifier (RNTI), such as Group-RNTI (G-RNTI), and performs Cyclic Redundancy Check (CRC) scrambling on the Physical Downlink Control Channel (PDCCH) to schedule the Physical Downlink Shared Channel (PDSCH) on which the corresponding multicast and / or broadcast service is carried, that is, the base station transmits only one PDSCH resource to multiple terminals. For the other wireless transmission mode, it is the Point to Point (PTP) mode. The network side schedules the terminal-specific PDSCH using the terminal-specific PDCCH. Such a transmission method is similar to the transmission method of the conventional unicast service, that is, the base station transmits multiple PDSCH resources to multiple terminals. At the same time, in NR multicast and / or broadcast, by introducing the Hybrid Automatic Repeat reQuest (HARQ) mechanism, the network side realizes retransmission based on the received Negative Acknowledgment (NACK) information, improving the reliability of the service.

[0004] Considering a scenario where there are a large number of terminals receiving the same multicast and / or broadcast service in the NR system, if each terminal individually feeds back an Acknowledgment (ACK) / NACK, the Physical Uplink Control Channel (Physical The overhead of the Uplink Control Channel (PUCCH) increases, and the complexity of PUCCH detection by the base station also increases. Therefore, when the number of terminals is large, it is more suitable to use a HARQ feedback scheme with only negative acknowledgment (NACK-only). That is, when the terminal does not correctly receive the PDSCH, it feeds back a NACK, and the PUCCH resources of the NACKs fed back by multiple terminals are the same. The base station only needs to detect whether there is a NACK fed back by the terminal to determine whether to retransmit the PDSCH of the multicast and / or broadcast service. However, the NR multicast and / or broadcast technology supports the PTP and PTM transmission modes. In order to improve the performance and reliability of the multicast and / or broadcast service, how to indicate the above transmission mode between the terminal and the base station becomes a technical problem that needs to be solved urgently.

Summary of the Invention

Problems to be Solved by the Invention

[0005] To solve the problems related to the related art, at least one embodiment of the present disclosure provides a HARQ feedback method, a terminal, and a network device for multicast and / or broadcast services.

Means for Solving the Problems

[0006] In one aspect of the present disclosure, at least one embodiment provides a HARQ feedback method for multicast and / or broadcast services, the method comprising: The terminal receives first indication information transmitted from the network, where the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation. The terminal includes determining a PUCCH resource used for performing HARQ feedback on the PDSCH based on the first indication information.

[0007] Also, according to at least one embodiment of the present disclosure, the PDCCH detection operation includes detecting a terminal-specific PDCCH, detecting a common PDCCH, or detecting both a common PDCCH and a terminal-specific PDCCH.

[0008] Also, according to at least one embodiment of the present disclosure, the common PDCCH is used for scheduling a multicast and / or broadcast service, and / or the terminal-specific PDCCH is used for scheduling a multicast and / or broadcast service.

[0009] Also, according to at least one embodiment of the present disclosure, the transmission mode of the multicast and / or broadcast service includes at least one of a PTP mode and a PTM mode. Also, according to at least one embodiment of the present disclosure, the PDSCH reception operation includes receiving a PDSCH scheduled by a terminal-specific PDCCH, receiving a PDSCH scheduled by a common PDCCH, or receiving a PDSCH scheduled by both a terminal-specific PDCCH and a common PDCCH.

[0010] Also, according to at least one embodiment of the present disclosure, the PDSCH is used for carrying a multicast and / or broadcast service.

[0011] Also, according to at least one embodiment of the present disclosure, the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource, The first PUCCH resource is a PUCCH resource related to a common PDCCH or a PUCCH resource indicated by a common PDCCH, and the second PUCCH resource is a PUCCH resource related to a UE-specific PDCCH or a PUCCH resource indicated by a UE-specific PDCCH.

[0012] Also, according to at least one embodiment of the present disclosure, the method further includes The UE receives configuration information of a first PUCCH resource transmitted from the network, where the first PUCCH resource is used for the UE to feedback HARQ information for a first PDSCH, the first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and the first PUCCH resource is a PUCCH shared by at least one UE, The UE receives configuration information of a second PUCCH resource transmitted from the network, where the second PUCCH resource is used for the UE to feedback HARQ information for a second PDSCH, the second PDSCH is a PDSCH scheduled by a UE-specific PDCCH or a PDSCH transmitted through a PTP mode, and the second PUCCH resource is a UE-specific PUCCH.

[0013] Also, according to at least one embodiment of the present disclosure, the method further includes When the first indication information indicates at least one of detecting a common PDCCH, a PTM mode, and receiving a PDSCH scheduled by a common PDCCH, The UE transmits a first 1 deWhen not successful in receiving the first data packet, including feedback of HARQ information for the first data packet on the first PUCCH resource. 1 de Including feedback of HARQ information for the first data packet on the first PUCCH resource.

[0014] Also, according to at least one embodiment of the present disclosure, the method further includes When the first indication information indicates at least one of detecting a terminal-specific PDCCH, PTP mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH, The terminal feeds back HARQ information for the first data packet transmitted via a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through the PTP mode on the second PUCCH. 2 de Including feedback of HARQ information for the first data packet on the second PUCCH.

[0015] Also, according to at least one embodiment of the present disclosure, the method further includes When the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, PTP mode and PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, The terminal receives the first data packet transmitted via a PDSCH scheduled by the common PDCCH or a PDSCH transmitted through the PTM mode. When not successful in receiving the first data packet, and when not successful in receiving the same first data packet transmitted via a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through the PTP mode, 3 de When not successful in receiving the first data packet, including feedback of HARQ information for the first data packet on the second PUCCH. 3 de When not successful in receiving the first data packet, 3 de Including feedback of HARQ information for the first data packet on the second PUCCH.

[0016] Also, according to at least one embodiment of the present disclosure, the method further includes The terminal determines to feedback HARQ information for the 3 de -th data packet on the second PUCCH based on a predefined first feedback policy or second indication information transmitted from the network.

[0017] Also, according to at least one embodiment of the present disclosure, the method further includes when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH when the terminal has successfully received the 4 de -th data packet transmitted via the PDSCH scheduled by the common PDCCH or the PDSCH transmitted through the PTM mode, and / or when the terminal has successfully received the same 4 de -th data packet transmitted via the PDSCH scheduled by the terminal-specific PDCCH or the PDSCH transmitted through the PTP mode, the method includes 4 de feedbacking HARQ information for the

[0018] -th data packet on the second PUCCH. Also, according to at least one embodiment of the present disclosure, the method further includes 4 de determining to feedback HARQ information for the

[0019] -th data packet on the second PUCCH based on a predefined second feedback policy or third indication information transmitted from the network. The base station is to transmit first indication information to the terminal, and the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation. The base station includes determining a PUCCH resource used for the terminal to perform HARQ feedback on the PDSCH based on the first indication information, and detecting HARQ feedback information transmitted from the terminal using the determined PUCCH resource.

[0020] Also, according to at least one embodiment of the present disclosure, the PDCCH detection operation includes detecting a terminal-specific PDCCH, detecting a common PDCCH, including any one of detecting a common PDCCH and a terminal-specific PDCCH.

[0021] Also, according to at least one embodiment of the present disclosure, the transmission mode of the multicast and / or broadcast service includes including at least one of a PTP mode and a PTM mode.

[0022] Also, according to at least one embodiment of the present disclosure, the PDSCH reception operation includes receiving a PDSCH scheduled by a terminal-specific PDCCH, receiving a PDSCH scheduled by a common PDCCH, including any one of receiving a PDSCH scheduled by a terminal-specific PDCCH and a common PDCCH.

[0023] Also, according to at least one embodiment of the present disclosure, the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource. The first PUCCH resource is a PUCCH resource related to a common PDCCH or a PUCCH resource indicated by the common PDCCH, and the second PUCCH resource is a PUCCH resource related to a UE-specific PDCCH or a PUCCH resource indicated by the UE-specific PDCCH.

[0024] Also, according to at least one embodiment of the present disclosure, the method further includes the base station transmitting configuration information of a first PUCCH resource to the terminal, where the first PUCCH resource is used for the terminal to feedback HARQ information for a first PDSCH, the first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and the first PUCCH resource is a PUCCH shared by at least one terminal; and the base station transmitting configuration information of a second PUCCH resource to the terminal, where the second PUCCH resource is used for the terminal to feedback HARQ information for a second PDSCH, the second PDSCH is a PDSCH scheduled by a UE-specific PDCCH or a PDSCH transmitted through a PTP mode, and the second PUCCH resource is a UE-specific PUCCH.

[0025] Also, according to at least one embodiment of the present disclosure, when the base station determines a PUCCH resource used for the terminal to perform HARQ feedback for a PDSCH based on the first indication information and detects HARQ feedback information transmitted from the terminal using the determined PUCCH resource, when the first indication information indicates at least one of detecting a common PDCCH, a PTM mode, and receiving a PDSCH scheduled by the common PDCCH, the base station uses the first PUCCH resource for the 1 deincluding detecting HARQ information of the terminal for a first data packet, where the first 1 de data packet is a data packet that the terminal has not successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode.

[0026] Also, according to at least one embodiment of the present disclosure, the base station determines a PUCCH resource used by the terminal to perform HARQ feedback for a PDSCH based on the first indication information, and detecting HARQ feedback information transmitted from the terminal on the determined PUCCH resource is when the first indication information indicates at least one of detecting a terminal-specific PDCCH, a PTP mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH, the base station includes detecting HARQ information of the terminal for a first data packet on the second PUCCH resource, where the first 2 de data packet is a first data packet transmitted via a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through a PTP mode. 2 de the first 2 de data packet is a first data packet transmitted via a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through a PTP mode.

[0027] Also, according to at least one embodiment of the present disclosure, the base station determines a PUCCH resource used by the terminal to perform HARQ feedback for a PDSCH based on the first indication information, and detecting HARQ feedback information transmitted from the terminal on the determined PUCCH resource is when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the base station includes detecting HARQ information of the terminal for a first data packet on the second PUCCH resource, where the first 3 dedetecting HARQ information of the terminal for the data packet, where the first 3 de data packet is the same data packet that the terminal has not successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and a PDSCH scheduled by a terminal-specific PDCCH or transmitted through a PTP mode.

[0028] Also, according to at least one embodiment of the present disclosure, the method further includes the base station determining to detect, on the second PUCCH, HARQ information for the first 3 de data packet based on a predefined first feedback policy, or the base station transmitting second indication information to the terminal to instruct the terminal to feedback, on the second PUCCH, HARQ information for the first 3 de data packet.

[0029] Also, according to at least one embodiment of the present disclosure, the base station determines, based on the first indication information, a PUCCH resource used by the terminal to perform HARQ feedback for a PDSCH, and detecting HARQ feedback information transmitted from the terminal on the determined PUCCH resource when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by a terminal-specific PDCCH and a common PDCCH the base station detecting, on the second PUCCH resource, HARQ information of the terminal for the first 4 de data packet, where the first 4 deThe data packet is a data packet that the terminal has successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and / or the same data packet that the terminal has successfully received via a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through a PTP mode.

[0030] Moreover, according to at least one embodiment of the present disclosure, the method further The base station determines to detect HARQ information for the data packet on the second PUCCH based on a predefined second feedback policy. 4 de for the data packet, Alternatively, the base station includes transmitting third indication information to the terminal so as to instruct the terminal to feedback HARQ information for the data packet on the second PUCCH. 4 de for the data packet on the second PUCCH.

[0031] In another aspect of the present disclosure, at least one embodiment provides a terminal, which includes a transceiver and a processor, wherein The transceiver is configured to receive first indication information transmitted from a network, and the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation. The processor is configured to determine a PUCCH resource used for performing HARQ feedback on the PDSCH based on the first indication information.

[0032] In another aspect of the present disclosure, at least one embodiment provides a terminal, which includes a processor, a memory, and a program stored in the memory and executable by the processor. When the program is executed by the processor, the steps of the above method are realized. In another aspect of the present disclosure, at least one embodiment provides a base station, the base station including a receiver and a processor, wherein, the transceiver is configured to transmit first indication information to a terminal, and the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation, the processor is configured to determine a PUCCH resource used by the terminal to perform HARQ feedback on a PDSCH based on the first indication information, and to detect HARQ feedback information transmitted from the terminal using the determined PUCCH resource.

[0033] In another aspect of the present disclosure, at least one embodiment provides a base station, the base station including a processor, a memory, and a program stored in the memory and executable by the processor, and when the program is executed by the processor, the steps of the above method are realized.

[0034] In another aspect of the present disclosure, at least one embodiment provides a computer-readable storage medium, in which a program is stored, and when the program is executed by a processor, the steps of the above method are realized.

Advantages of the Invention

[0035] Compared with related technologies, according to the HARQ feedback method, terminal, and base station of the embodiments of the present disclosure for multicast and / or broadcast services, the indication of the transmission mode of the multicast and / or broadcast service can be realized, and the transmission performance and reliability can be improved. Further, in the present disclosure, the terminal can be instructed to feedback HARQ information using a PUCCH resource related to the terminal-specific PDCCH or a PUCCH resource indicated by the terminal-specific PDCCH, whereby the base station can 3 deIt is possible to determine specifically which terminal has not succeeded in receiving the data packet, and further, the data packet can be retransmitted to the terminal using the unicast method to save transmission resource overhead. 3 de

Brief Description of the Drawings

[0036]

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Modes for Carrying Out the Invention

[0037] By reading the following detailed description of the selectable embodiments, various other advantages and benefits will become apparent to those skilled in the art. The drawings are only intended to show the selectable embodiments and should not be regarded as a limitation to the present disclosure. Also, in the drawings, the same reference numerals are used to indicate the same components.

[0038] ​Exemplary embodiments of the present disclosure will be described in more detail below with reference to the drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided so that the present disclosure can be understood more clearly and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0039] Terms such as "first", "second", etc. in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way are mutually interchangeable where appropriate so that the embodiments of the present disclosure described herein can be implemented in an order other than, for example, those illustrated or described herein. Further, the terms "comprising" and "including", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to the explicitly listed steps or units, and may include those not explicitly listed, or other steps or units inherent to these processes, methods, products or apparatuses. "And / or" in the specification and claims means at least one of the connected objects.

[0040] The technology described in this specification can be applied to various communication systems, not limited to new air interface (NR: New Radio) systems and long term evolution (LTE: Long Time Evolution) / LTE-Advanced (LTE-A) systems, but also including code division multiple access (CDMA: Code Division Multiple Access) systems, time division multiple access (TDMA: Time Division Multiple Access), frequency division multiple access (FDMA: Frequency Division Multiple Access), orthogonal frequency division multiple access (OFDMA: Orthogonal Frequency Division Multiple Access), single-carrier frequency-division multiple access (SC-FDMA: Single-carrier Frequency-Division Multiple Access) and other systems. The terms "system" and "network" are always used interchangeably. CDMA systems can implement wireless technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA: Universal Terrestrial Radio Access). UTRA includes wideband CDMA (WCDMA (registered trademark): Wideband Code Division Multiple Access) and other CDMA variants. TDMA systems can implement wireless technologies such as the Global System of Mobile communication (GSM: Global System of Mobile communication). OFDMA systems can implement wireless technologies such as Ultra Mobile BroadBand (UMB: UltraMoBile BroadBand), Evolution-UTRA (E-UTRA: Evolution-UTRA), IEEE802.21 (Wi-Fi), IEEE802.16 (WiMAX), IEEE802.20, Flash-OFDM. UTRA and E-UTRA are Universal Mobile Telecommunications System (UMTS: Universal It is part of the (Mobile Telecommunications System). LTE and more advanced LTE (such as LTE-A) are new versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in the documents of the organization "3rd Generation Partnership Project" (3GPP (registered trademark): 3rd Generation Partnership Project). CDMA2000 and UMB are described in the documents of the organization "3rd Generation Partnership Project 2" (3GPP (registered trademark) 2). The technology described in this specification may be used in the above-mentioned systems and radio technologies, and may also be used in other systems and radio technologies. However, the following description explains the NR system for illustrative purposes, and the NR terms are used in many of the following descriptions, but these technologies may also be applicable to applications other than NR system applications.

[0041] The following description provides examples and does not limit the scope, applicability, or configuration described in the claims. The functions and arrangements of the elements discussed can be changed without departing from the spirit and scope of the present disclosure. In various examples, various regulations or components can be appropriately omitted, substituted, or added. For example, the described method may be executed in a different order from that described, and various steps may be added, omitted, or combined. Also, features described with reference to some examples can be combined in other examples.

[0042] Referring to FIG. 1, FIG. 1 is a block diagram showing a wireless communication system applicable to an embodiment of the present disclosure. The wireless communication system includes a terminal 11 and a network device 12. Here, the terminal 11 may also be referred to as a user terminal or a user equipment (UE). The terminal 11 may be a terminal-side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile Internet device (MID), a wearable device, or an in-vehicle device. Note that, in the embodiments of the present disclosure, the specific type of the terminal 11 is not limited. The network device 12 may be a base station and / or a core network element. Here, the base station may be a base station of a version after 5G (for example, gNB, 5G NR NB, etc.) or a base station in another communication system (for example, eNB, WLAN access point, or other access points, etc.). Here, the base station may be called a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service Set: ESS, a Node B, an evolved Node B (eNB), a home Node B, an evolved home Node B, a WLAN access point, a WiFi node, or other appropriate terms in the field. If the same technical effect can be achieved, the base station is not limited to a specific technical term. In the embodiments of the present disclosure, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0043] The base station can communicate with terminal 11 under the control of a base station controller. In various examples, the base station controller may be part of the core network or the base station. Some base stations can communicate control information or user data with the core network via a backhaul. In some examples, some of these base stations can communicate with each other directly or indirectly via a backhaul link. The backhaul link may be a wired or wireless communication link. The wireless communication system can support operation on multiple carriers (waveform signals with different frequencies). A multi-carrier transmitter can simultaneously transmit a modulated signal on the multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various wireless technologies. Each modulated signal is transmitted on various carriers and can carry control information (e.g., reference signals, control channels, etc.), overhead information, data, etc.

[0044] The base station can perform wireless communication with terminal 11 via one or more access point antennas. Each base station can provide communication coverage for a corresponding coverage area. The coverage area of an access point may be divided into sectors that constitute only a part of the coverage area. The wireless communication system may include different types of base stations (e.g., macro base stations, micro base stations, or pico base stations). The base station can also utilize various wireless technologies such as, for example, cellular or WLAN wireless access technologies. The base station may be associated with the same or different access networks or operator arrangements. The coverage areas of various base stations (including the coverage areas of base stations of the same or different types, coverage areas using the same or different wireless technologies, or coverage areas belonging to the same or different access networks) can overlap.

[0045] In a wireless communication system, a communication link may include an uplink for carrying uplink (UL) transmission (e.g., from terminal 11 to network device 12), or a downlink for carrying downlink (DL) transmission (e.g., from network device 12 to terminal 11). UL transmission may also be referred to as reverse link transmission, and DL transmission may also be referred to as forward link transmission. Downlink transmission may be performed by a licensed band, an unlicensed band, or both. Similarly, uplink transmission may be performed by a licensed band, an unlicensed band, or both.

[0046] As described in the background art, NR multicast and / or broadcast technologies support PTP and PTM transmission modes. To improve the reception performance of PDSCH, a scheme may be introduced in which a terminal receives PDSCH of multicast and / or broadcast services via both PTP and PTM transmission modes simultaneously, thereby improving the demodulation performance of PDSCH by means of an information merging method. The base station needs to clearly inform the terminal whether the terminal uses only one of the PTP or PTM transmission modes or uses both modes simultaneously. At the same time, considering that the HARQ feedback modes of PTM and PTP are different. For example, PTM is a HARQ feedback mechanism based on NACK-only, while PTP is a HARQ feedback mechanism based on ACK / NACK. When the terminal uses PTP and PTM modes simultaneously, it is necessary to determine whether the HARQ feedback resource of the terminal is the feedback resource configured in the PTM mode or the feedback resource configured in the PTP mode. For example, in the NACK-only HARQ feedback mechanism, since the PUCCH resources of the feedback NACKs of multiple terminals are the same, the base station cannot distinguish which terminal is feeding back NACK, and it is necessary to retransmit PDSCH when NACK is detected.

[0047] To solve at least one of the above problems, embodiments of the present disclosure provide a HARQ feedback method for multicast and / or broadcast services that can improve the transmission performance and reliability of multicast and / or broadcast services.

[0048] As shown in FIG. 2, when the HARQ feedback method for multicast and / or broadcast services according to an embodiment of the present disclosure is applied to the terminal side, it includes steps 21 to 22.

[0049] In step 21, the terminal receives first indication information transmitted from the network, and the first indication information is used to indicate at least one of 1) PDCCH detection operation, 2) transmission mode of multicast and / or broadcast services, and 3) PDSCH reception operation.

[0050] Here, the first indication information is specifically at least one of downlink control information (DCI), upper layer signaling (for example, radio resource control (RRC) signaling), etc. Considering whether the terminal supports only the PTP transmission mode, only the PTM transmission mode, or both the PTP and PTM transmission modes simultaneously, the PDCCH detection operation may specifically include any one of operations A) to C).

[0051] A) Detect the terminal-specific PDCCH. Here, the terminal-specific PDCCH is used to schedule multicast and / or broadcast services.

[0052] B) Detect the common PDCCH. Here, the common PDCCH is used to schedule multicast and / or broadcast services.

[0053] C) Detect the common PDCCH and the terminal-specific PDCCH. Here, the common PDCCH is used to schedule multicast and / or broadcast services, and / or the terminal-specific PDCCH is used to schedule multicast and / or broadcast services.

[0054] The common PDCCH is one in which the RNTI for scrambling the CRC of the PDCCH is shared by at least one terminal. For example, it is a PDCCH that scrambles the CRC using the G-RNTI.

[0055] The terminal-specific PDCCH is one in which the RNTI for scrambling the CRC of the PDCCH is unique to one terminal. For example, it is a PDCCH that scrambles the CRC using the C-RNTI.

[0056] Specifically, the transmission mode of the multicast and / or broadcast service includes at least one of the PTP mode and the PTM mode. That is, the transmission mode of the multicast and / or broadcast service may be one or both of the PTP mode and the PTM mode.

[0057] Specifically, the PDSCH reception operation is a) Receiving the PDSCH scheduled by the terminal-specific PDCCH; b) Receiving the PDSCH scheduled by the common PDCCH; c) Receiving the PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, including any one of them.

[0058] Here, the PDSCHs scheduled by the terminal-specific PDCCH and the common PDCCH are both used to carry multicast and / or broadcast services.

[0059] In step 22, the terminal determines a PUCCH resource used for performing HARQ feedback on the PDSCH based on the first indication information.

[0060] In an embodiment of the present disclosure, the PUCCH resource specifically includes a first PUCCH resource and / or a second PUCCH resource. The first PUCCH resource is a PUCCH resource related to a common PDCCH or a PUCCH resource indicated by a common PDCCH, and the second PUCCH resource is a PUCCH resource related to a terminal-specific PDCCH or a PUCCH resource indicated by a terminal-specific PDCCH.

[0061] By the above method, an embodiment of the present disclosure can instruct the terminal to perform data transmission using at least one of the PTP and PTM transmission modes by instructing at least one of the PDCCH detection operation, the transmission mode of the multicast and / or broadcast service, and the PDSCH reception operation on the terminal through the first indication information. For example, when the PTP and PTM transmission modes are used simultaneously, the transmission performance and reliability of the multicast and / or broadcast service can be improved by means of information merging.

[0062] In the above method, the terminal may further receive setting information of the first PUCCH resource transmitted from the network. Here, the first PUCCH resource is used for the terminal to feedback HARQ information on the first PDSCH, and the first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through the PTM mode.

[0063] Among them, in one embodiment, the first PUCCH resource is a PUCCH shared by at least one terminal and is used for transmitting NACK information when the terminal adopts a NACK-only HARQ feedback scheme.

[0064] Similarly, the terminal may further receive configuration information of a second PUCCH resource transmitted from the network. Here, the second PUCCH resource is used for the terminal to feedback HARQ information for the second PDSCH, and the second PDSCH is a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through the PTP mode, and the second PUCCH resource is a terminal-specific PUCCH.

[0065] In an embodiment of the present disclosure, when the first indication information indicates at least one of detecting a common PDCCH, the PTM mode, and receiving a PDSCH scheduled by the common PDCCH, the terminal transmits the first 1 de - When the data packet is not successfully received via a PDSCH scheduled by the common PDCCH or a PDSCH transmitted through the PTM mode, the HARQ information for the first 1 de - data packet is fed back on the first PUCCH resource. For example, the terminal may adopt a NACK-only HARQ feedback scheme, that is, when the terminal does not accurately receive the first 1 de - data packet, a negative acknowledgment (NACK) is fed back, and the NACK information for the first 1 de - data packet is fed back on the first PUCCH resource.

[0066] In an embodiment of the present disclosure, when the first indication information indicates at least one of detecting a terminal-specific PDCCH, the PTP mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH, the terminal transmits the HARQ information for the first 2 de - data packet via a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through the PTP mode and feeds it back on the second PUCCH. For example, the terminal feeds back the first 2 deACK or NACK information for a data packet can be fed back.

[0067] In an embodiment of the present disclosure, when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the terminal transmits, via a PDSCH scheduled by the common PDCCH or a PDSCH transmitted through the PTM mode, the first 3 de data packet when not successfully receiving it, and the same first 3 de data packet when not successfully receiving it via a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through the PTP mode, the first 3 de HARQ information for the data packet is fed back on the second PUCCH. For example, when the terminal does not accurately receive the first 3 de data packet via two PDSCHs, it feeds back a NACK, and the NACK information for the first 3 de data packet can be fed back on the second PUCCH resource. In this way, the terminal can feed back the NACK information for the first 3 de data packet on the second PUCCH resource, thereby realizing retransmission for the terminal without affecting other terminals that have accurately received the first 3 de data packet. Considering that the first PUCCH is a PUCCH shared by multiple terminals, if one terminal feeds back NACK information on the first PUCCH resource, the base station has to retransmit in the PTM mode for all terminals. Thus, the first 3 deA terminal that has accurately received a data packet needs to receive the PDCCH and PDSCH, which results in unnecessary energy consumption overhead. However, since the second PUCCH is a PUCCH resource related to the terminal-specific PDCCH or a PUCCH resource indicated by the terminal-specific PDCCH, after receiving NACK information on the second PUCCH, the base station 3 de can determine specifically which terminal has not successfully received the data packet, and further, by using the unicast method, the 3 de data packet can be retransmitted to the terminal to save transmission resource overhead, and the resource utilization efficiency of the retransmission can also be improved. The 3 de repeated reception by other terminals that have accurately received the data packet will not occur again.

[0068] In an embodiment of the present disclosure, regarding the policy of feeding back HARQ information for the data packet on the second PUCCH, it is pre-determined and may be set on the network side and the terminal side, or may be indicated by the network to the terminal through second indication information. That is, the terminal can determine to feed back the HARQ information for the data packet on the second PUCCH based on a pre-defined feedback policy or second indication information transmitted from the network. 3 de 3 de

[0069] In an embodiment of the present disclosure, when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, the PTP mode and the PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the terminal transmits the data packet transmitted through the PDSCH scheduled by the common PDCCH or the PDSCH transmitted through the PTM mode 4 de ​​When successfully receiving a first packet and / or via a PDSCH transmitted through a PDSCH or PTP mode scheduled by the terminal-specific PDCCH, the same first 4 de When successfully receiving the first packet, the first 4 de HARQ information for the first packet is fed back on the second PUCCH. For example, when the terminal has at least one successful reception of the first packet on two PDSCHs, the terminal can feedback information ACK on the second PUCCH. The above two PDSCHs are respectively 1) a PDSCH scheduled by the common PDCCH or a PDSCH transmitted through a PTM mode, and 2) a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through a PTP mode. 4 de Similarly, the terminal can determine to feedback HARQ information for the first packet on the second PUCCH based on a predefined second feedback policy or third indication information transmitted from the network.

[0070] As shown in FIG. 3, when the HARQ feedback method for multicast and / or broadcast services according to an embodiment of the present disclosure is applied to the base station side, it includes steps 31 to 32. 4 de In step 31, the base station transmits first indication information to the terminal, and the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of multicast and / or broadcast services, and a PDSCH reception operation.

[0071] As shown in FIG. 3, when the HARQ feedback method for multicast and / or broadcast services according to an embodiment of the present disclosure is applied to the base station side, it includes steps 31 to 32. In step 31, the base station transmits first indication information to the terminal, and the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of multicast and / or broadcast services, and a PDSCH reception operation.

[0072] Here, the first indication information may specifically be at least one of DCI, upper layer signaling (e.g., RRC signaling), etc. The PDCCH detection operation includes any one of detecting a terminal-specific PDCCH, detecting a common PDCCH, and detecting both a common PDCCH and a terminal-specific PDCCH.

[0073] The transmission mode of the multicast and / or broadcast service includes at least one of the PTP mode and the PTM mode.

[0074] The PDSCH reception operation includes any one of receiving a PDSCH scheduled by a terminal-specific PDCCH, receiving a PDSCH scheduled by a common PDCCH, and receiving a PDSCH scheduled by both a terminal-specific PDCCH and a common PDCCH.

[0075] In step 32, the base station determines a PUCCH resource used for the terminal to perform HARQ feedback for the PDSCH based on the first indication information, and detects HARQ feedback information transmitted from the terminal using the determined PUCCH resource.

[0076] Here, the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource. Here, the first PUCCH resource is a PUCCH resource related to a common PDCCH or a PUCCH resource indicated by a common PDCCH, and the second PUCCH resource is a PUCCH resource related to a terminal-specific PDCCH or a PUCCH resource indicated by a terminal-specific PDCCH.

[0077] Through the above method, embodiments of the present disclosure can improve the transmission performance and reliability of multicast and / or broadcast services by setting, through the first indication information, whether the terminal operates in only one of the PTP and PTM modes or operates in both modes simultaneously. For example, when the PTP and PTM transmission modes are used simultaneously, the transmission performance and reliability of multicast and / or broadcast services can be improved by means of information merging.

[0078] In embodiments of the present disclosure, the base station can further transmit the configuration information of the first PUCCH resource to the terminal. The first PUCCH resource is used for the terminal to feedback HARQ information for the first PDSCH. The first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through the PTM mode. The first PUCCH resource is a PUCCH shared by at least one terminal.

[0079] In addition, the base station can further transmit the configuration information of the second PUCCH resource to the terminal. The second PUCCH resource is used for the terminal to feedback HARQ information for the second PDSCH. The second PDSCH is a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through the PTP mode. The second PUCCH resource is a terminal-specific PUCCH.

[0080] Specifically, in step 32 above, it may include at least one of the following 1) to 4).

[0081] 1) When the first indication information indicates at least one of detecting a common PDCCH, the PTM mode, and receiving a PDSCH scheduled by the common PDCCH, the base station can detect the HARQ information of the terminal for the first data packet on the first PUCCH resource. 1 de The first 1 deThe first packet is a data packet that the terminal has not successfully received via the PDSCH scheduled by the common PDCCH or the PDSCH transmitted through the PTM mode.

[0082] For example, the terminal can adopt a NACK-only HARQ feedback scheme, that is, when the terminal has not accurately received the first 1 de packet, it feeds back a NACK, and can feed back NACK information for the first 1 de packet on the first PUCCH resource. The base station detects the NACK information of the terminal for the first 1 de packet on the first PUCCH resource. When detecting the NACK information, the base station retransmits the first 1 de packet in the PTM mode.

[0083] 2) When the first indication information indicates at least one of detecting a terminal-specific PDCCH, the PTP mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH, the base station can detect the HARQ information of the terminal for the first 2 de packet on the second PUCCH resource, and the first 2 de packet is the first 2 de packet transmitted via the PDSCH scheduled by the terminal-specific PDCCH or the PDSCH transmitted through the PTP mode.

[0084] For example, the terminal can feed back ACK or NACK information for the first 2 de packet on the second PUCCH. The base station determines whether the terminal has successfully received the first 2 de packet based on the detected ACK or NACK information. For example, when detecting NACK information, it is determined that the terminal has not successfully received the first 2 de packet. In this case, the base station retransmits the first 2 de- The data packet can be retransmitted to the terminal. When ACK information is detected, the terminal is the 2 de - It is determined that the data packet has been successfully received. In this case, the 2 de - There is no need to retransmit the data packet.

[0085] 3) When the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, that is, when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, two transmission modes (PTP mode and PTM mode), and two reception operations (receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH), the base station detects the HARQ information of the terminal for the 3 de - data packet on the second PUCCH resource, and the 3 de - data packet is the same data packet that the terminal has not successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through a PTP mode.

[0086] For example, when the terminal has not accurately received the 3 de - data packet on two PDSCHs, it feeds back NACK information for the 3 de - data packet on the second PUCCH resource. Since the second PUCCH is a PUCCH resource related to the terminal-specific PDCCH or a PUCCH resource indicated by the terminal-specific PDCCH, when the base station receives NACK information on the second PUCCH, it can determine the target terminal that has not successfully received the 3 de - data packet, and further uses the PTP method to 3 de- The data packet can be resent to the target terminal to save transmission resource overhead. In contrast, when the terminal feedbacks NACK information on the first PUCCH resource, since the first PUCCH resource is shared by multiple terminals, the base station cannot confirm which terminal is the one that feedbacks the NACK, and for all terminals, the 3 de - data packet can only be resent in the PTM mode, thereby 3 de - causing repeated reception of PDCCH and PDSCH by the terminal that has successfully received the data packet, and further resulting in energy consumption overhead and resource waste.

[0087] Also, the base station determines to detect HARQ information for the data packet on the second PUCCH based on a predefined first feedback policy, or the base station can send second indication information to the terminal to instruct the terminal to feedback HARQ information for the data packet on the second PUCCH. 3 de - data packet 3 de - on the second PUCCH.

[0088] 4) When the first indication information instructs at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the base station detects the HARQ information of the terminal for the data packet on the second PUCCH resource, and the data packet is a data packet that the terminal has successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and / or the same data packet that the terminal has successfully received via a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through a PTP mode. That is, the 4 de - data packet 4 de - is the same data packet as the one that the terminal has successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and / or the same data packet that the terminal has successfully received via a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through a PTP mode. That is, the 4 deThe data packet is a data packet that the terminal has successfully received at least once through two PDSCHs. The two PDSCHs are, respectively, 1) the PDSCH scheduled by the common PDCCH or the PDSCH transmitted through the PTM mode, and 2) the PDSCH scheduled by the terminal-specific PDCCH or the PDSCH transmitted through the PTP mode.

[0089] Further, the base station can further determine to detect HARQ information for the data packet on the second PUCCH based on a predefined second feedback policy, or the base station can transmit third indication information to the terminal to instruct the terminal to feedback HARQ information for the data packet on the second PUCCH. 4 de data packet on the second 4 de PUCCH. As can be seen from the above, in the method of the embodiments of the present disclosure, the base station instructs the terminal to perform multicast and / or broadcast service transmission in such a way that the terminal uses one or both of PTP and PTM. Also, when the terminal is operating simultaneously in PTP and PTM modes and has not accurately received a certain data packet, the terminal does not need to feedback NACK information on the first PUCCH resource, but needs to feedback NACK information on the second PUCCH resource. Thereby, the base station can determine, through the second PUCCH resource, which terminal has not accurately received the data packet, and can retransmit using the PTP mode without affecting the operations of other terminals. Otherwise, when the base station receives NACK information on the first PUCCH resource, the base station cannot determine the number of terminals that feedback NACK information, does not know which terminal is feedbacking NACK, and the base station can only retransmit the data packet to all terminals. In fact, it is possible that only one terminal has not accurately received the data packet. Therefore, this not only wastes network resources but also brings unnecessary PDCCH detection and PDSCH reception overhead to other terminals.

[0090] The above has described various methods of the embodiments of the present disclosure. The following further provides an apparatus for implementing the above method.

[0091] Referring to FIG. 4, an embodiment of the present disclosure provides a terminal, which includes a receiving module 41 and a determining module 42.

[0092] The receiving module 41 is configured to receive first indication information transmitted from the network, and the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of multicast and / or broadcast services, and a PDSCH reception operation.

[0093] The decision module 42 is configured to determine a PUCCH resource used for performing HARQ feedback on the PDSCH based on the first indication information.

[0094] In one embodiment, the PDCCH detection operation includes detecting a terminal-specific PDCCH, detecting a common PDCCH, or detecting both a common PDCCH and a terminal-specific PDCCH.

[0095] In one embodiment, the common PDCCH is used for scheduling a multicast and / or broadcast service, and / or the terminal-specific PDCCH is used for scheduling a multicast and / or broadcast service.

[0096] In one embodiment, the transmission mode of the multicast and / or broadcast service includes at least one of a PTP mode and a PTM mode.

[0097] In one embodiment, the PDSCH reception operation includes receiving a PDSCH scheduled by a terminal-specific PDCCH, receiving a PDSCH scheduled by a common PDCCH, or receiving a PDSCH scheduled by both a terminal-specific PDCCH and a common PDCCH.

[0098] In one embodiment, the PDSCH is used for carrying a multicast and / or broadcast service.

[0099] In one embodiment, the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource. The first PUCCH resource is a PUCCH resource related to a common PDCCH or a PUCCH resource indicated by a common PDCCH. The second PUCCH resource is a PUCCH resource related to a UE-specific PDCCH or a PUCCH resource indicated by a UE-specific PDCCH.

[0100] In one embodiment, the receiving module further receives configuration information of a first PUCCH resource transmitted from a network, where the first PUCCH resource is used for a UE to feedback HARQ information for a first PDSCH, the first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and the first PUCCH resource is a PUCCH shared by at least one UE, receives configuration information of a second PUCCH resource transmitted from a network, where the second PUCCH resource is used for a UE to feedback HARQ information for a second PDSCH, the second PDSCH is a PDSCH scheduled by a UE-specific PDCCH or a PDSCH transmitted through a PTP mode, and the second PUCCH resource is a UE-specific PUCCH, and is configured to perform the above.

[0101] In one embodiment, the UE further includes a first processing module, The first processing module When the first indication information indicates at least one of detecting a common PDCCH, a PTM mode, and receiving a PDSCH scheduled by a common PDCCH, when the UE fails to successfully receive a first 1 de data packet transmitted via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, the first 1 deconfigured to feedback HARQ information for a data packet on the first PUCCH resource.

[0102] In one embodiment, the terminal further includes a second processing module, The second processing module when the first indication information indicates at least one of detecting a terminal-specific PDCCH, a PTP mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH, the HARQ information for a data packet is fed back on the second PUCCH by the terminal through a PDSCH transmitted through the PDSCH scheduled by the terminal-specific PDCCH or the PTP mode. 2 de configured to feedback HARQ information for a data packet on the second PUCCH.

[0103] In one embodiment, the terminal further includes a third processing module, The third processing module when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the terminal is transmitted through a PDSCH transmitted through the PDSCH scheduled by the common PDCCH or the PTM mode when the terminal has not successfully received the data packet, and the same data packet transmitted through the PDSCH scheduled by the terminal-specific PDCCH or the PTP mode. 3 de when the terminal has not successfully received the data packet, and the same data packet transmitted through the PDSCH scheduled by the terminal-specific PDCCH or the PTP mode. 3 de when the terminal has not successfully received the data packet, the 3 de configured to feedback HARQ information for a data packet on the second PUCCH.

[0104] In one embodiment, the terminal further includes a first feedback mode determination module, The first feedback mode determination module is configured to determine to feedback HARQ information for the data packet on the second PUCCH based on a predefined first feedback policy or second indication information transmitted from the network. 3 de It is configured to feedback HARQ information for the data packet on the second PUCCH.

[0105] In one embodiment, the terminal further includes a fourth processing module. The fourth processing module When the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, PTP mode and PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, when the terminal successfully receives the data packet transmitted via the PDSCH scheduled by the common PDCCH or the PDSCH transmitted through the PTM mode, and / or when the terminal successfully receives the same data packet transmitted via the PDSCH scheduled by the terminal-specific PDCCH or the PDSCH transmitted through the PTP mode, 4 de It is configured to feedback HARQ information for the data packet on the second PUCCH. 4 de It is configured to feedback HARQ information for the data packet on the second PUCCH. 4 de It is configured to feedback HARQ information for the data packet on the second PUCCH.

[0106] In one embodiment, the terminal further includes a second feedback mode determination module. The second feedback mode determination module is configured to determine to feedback HARQ information for the data packet on the second PUCCH based on a predefined second feedback policy or third indication information transmitted from the network. 4 de It is configured to feedback HARQ information for the data packet on the second PUCCH.

[0107] Note that the device in this embodiment is a device corresponding to the method shown in FIG. 3 above, and all the implementation forms in the above embodiments are applicable to the implementation form of this device, and the same technical effects can be achieved. The device according to the embodiment of the present disclosure can implement all the method steps implemented by the embodiment of the above method, and the same technical effects can be achieved. The same parts and beneficial effects as those in the method embodiment of this embodiment will not be described in detail here.

[0108] Referring to FIG. 5, it is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. The terminal includes a processor 501, a transceiver 502, a memory 503, a user interface 504, and a bus interface.

[0109] In an embodiment of the present disclosure, the terminal further includes a program stored on the memory 503 and executable by the processor 501.

[0110] When the processor 501 executes the program, it is to receive first indication information transmitted from a network, where the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation, and to determine a PUCCH resource used for performing HARQ feedback on a PDSCH based on the first indication information.

[0111] In one embodiment, the PDCCH detection operation includes detecting a terminal-specific PDCCH, detecting a common PDCCH, or detecting both a common PDCCH and a terminal-specific PDCCH.

[0112] In one embodiment, the common PDCCH is used to schedule a multicast and / or broadcast service. and / or The PDCCH specific to the terminal is used to schedule multicast and / or broadcast services.

[0113] In one embodiment, the transmission mode of the multicast and / or broadcast service is including at least one of the PTP mode and the PTM mode.

[0114] In one embodiment, the PDSCH receiving operation is receiving a PDSCH scheduled by the PDCCH specific to the terminal, receiving a PDSCH scheduled by the common PDCCH, including any one of receiving a PDSCH scheduled by the PDCCH specific to the terminal and the common PDCCH.

[0115] In one embodiment, the PDSCH is used to carry multicast and / or broadcast services.

[0116] In one embodiment, the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource, the first PUCCH resource is a PUCCH resource related to the common PDCCH or a PUCCH resource indicated by the common PDCCH, and the second PUCCH resource is a PUCCH resource related to the PDCCH specific to the terminal or a PUCCH resource indicated by the PDCCH specific to the terminal.

[0117] In one embodiment, when the processor executes the program, it further Receiving configuration information of a first PUCCH resource transmitted from a network, where the first PUCCH resource is used for a terminal to feedback HARQ information for a first PDSCH, the first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and the first PUCCH resource is a PUCCH shared by at least one terminal, and Receiving configuration information of a second PUCCH resource transmitted from a network, where the second PUCCH resource is used for a terminal to feedback HARQ information for a second PDSCH, the second PDSCH is a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through a PTP mode, and the second PUCCH resource is a terminal-specific PUCCH, is realized.

[0118] In one embodiment, when the processor executes the program, further, When the first indication information indicates at least one of detecting a common PDCCH, a PTM mode, and receiving a PDSCH scheduled by a common PDCCH, feedback HARQ information for the first data packet on the first PUCCH resource when not successfully receiving the first data packet transmitted through the PDSCH scheduled by a common PDCCH or the PDSCH transmitted through a PTM mode. 1 de When not successfully receiving the first 1 de data packet, feedback HARQ information for the first data packet on the first PUCCH resource is realized.

[0119] In one embodiment, when the processor executes the program, further, When the first indication information indicates at least one of detecting a terminal-specific PDCCH, a PTP mode, and receiving a PDSCH scheduled by a terminal-specific PDCCH, the first data packet transmitted through the PDSCH scheduled by a terminal-specific PDCCH or the PDSCH transmitted through a PTP mode.2 de Realize that HARQ information for a data packet is fed back on the second PUCCH.

[0120] In one embodiment, when the processor executes the program, it further When the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, PTP mode and PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the first data packet transmitted via the PDSCH scheduled by the common PDCCH or the PDSCH transmitted through the PTM mode 3 de When not successfully receiving the same first data packet transmitted via the PDSCH scheduled by the terminal-specific PDCCH or the PDSCH transmitted through the PTP mode, and 3 de When not successfully receiving the first data packet, realize that HARQ information for the first data packet is fed back on the second PUCCH. 3 de Realize that HARQ information for a data packet is fed back on the second PUCCH.

[0121] In one embodiment, when the processor executes the program, it further Based on a predefined first feedback policy or second indication information transmitted from the network, determine to feed back HARQ information for the first data packet on the second PUCCH. 3 de Realize that HARQ information for a data packet is fed back on the second PUCCH.

[0122] In one embodiment, when the processor executes the program, it further When the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, PTP mode and PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the first data packet transmitted via the PDSCH scheduled by the common PDCCH or the PDSCH transmitted through the PTM mode4 de When successfully receiving the data packet and / or the same first transmitted via the PDSCH transmitted through the PDSCH scheduled by the terminal-specific PDCCH or in the PTP mode 4 de When successfully receiving the data packet, the first 4 de Realize feedback of HARQ information for the data packet on the second PUCCH.

[0123] In one embodiment, when the processor executes the program, further Based on a predefined second feedback policy or third indication information transmitted from the network, determine to feedback the HARQ information for the first 4 de data packet on the second PUCCH.

[0124] In the embodiments of the present disclosure, when the computer program is executed by the processor 501, it can be understood that each process of the method embodiment shown in FIG. 2 above can be realized and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0125] In FIG. 5, the bus architecture can include any number of interconnected buses and bridges. Specifically, one or more processors represented by processor 501 and various circuits of the memory represented by memory 503 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and will not be further described herein. The bus interface provides an interface. The transceiver 502 can be a plurality of elements including a transmitter and a receiver that provide a unit for communicating with various other devices via a transmission medium. For different user devices, the user interface 504 can be an interface that can be externally and internally connected to the required devices, and the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, etc.

[0126] The processor 501 is responsible for the management of the bus architecture and general processing, and the memory 503 can store data used by the processor 501 when performing operations.

[0127] It should be noted that the device in this embodiment is a device corresponding to the method shown in FIG. 2 above, and all the implementation manners in the above embodiments are applicable to the embodiment of this device, and the same technical effects can also be achieved. In this device, the transceiver 502 and the memory 503, and the transceiver 502 and the processor 501 may all be communicatively connected via a bus interface. The function of the processor 501 may also be realized by the transceiver 502, and the function of the transceiver 502 may also be realized by the processor 501. It should be noted that the above device according to the embodiment of the present disclosure can realize all the method steps realized by the embodiment of the above method, and the same technical effects can be achieved. For the same parts and beneficial effects as those in the method embodiment of this embodiment, they will not be described in detail here.

[0128] In some embodiments of the present disclosure, there is further provided a computer-readable storage medium storing a program, which when executed by a processor, receives first indication information transmitted from a network, where the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation; and determines a PUCCH resource used for performing HARQ feedback on a PDSCH based on the first indication information.

[0129] When the program is executed by a processor, all embodiments in the HARQ feedback method for a multicast and / or broadcast service applied to the terminal side can be implemented, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0130] An embodiment of the present disclosure provides a network-side device shown in FIG. 6, and the network-side device includes a transmission module 61 and a processing module 62.

[0131] The transmission module 61 is configured to transmit first indication information to a terminal, where the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation.

[0132] The processing module 62 is configured to determine a PUCCH resource used for the terminal to perform HARQ feedback on a PDSCH based on the first indication information, and detect HARQ feedback information transmitted from the terminal using the determined PUCCH resource.

[0133] In one embodiment, the PDCCH detection operation includes detecting a terminal-specific PDCCH; detecting a common PDCCH; including any one of detecting a common PDCCH and a terminal-specific PDCCH.

[0134] In one embodiment, the transmission mode of the multicast and / or broadcast service includes at least one of a PTP mode and a PTM mode.

[0135] In one embodiment, the PDSCH receiving operation includes any one of receiving a PDSCH scheduled by a terminal-specific PDCCH, receiving a PDSCH scheduled by a common PDCCH, and receiving a PDSCH scheduled by a terminal-specific PDCCH and a common PDCCH.

[0136] In one embodiment, the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource. The first PUCCH resource is a PUCCH resource related to a common PDCCH or a PUCCH resource indicated by a common PDCCH. The second PUCCH resource is a PUCCH resource related to a terminal-specific PDCCH or a PUCCH resource indicated by a terminal-specific PDCCH.

[0137] In one embodiment, the transmission module further transmits setting information of a first PUCCH resource to the terminal. The first PUCCH resource is used for the terminal to feedback HARQ information for a first PDSCH. The first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode. The first PUCCH resource is a PUCCH shared by at least one terminal. Transmitting configuration information of the second PUCCH resource to the terminal, where the second PUCCH resource is used for the terminal to feedback HARQ information for the second PDSCH, and the second PDSCH is a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through the PTP mode, and the second PUCCH resource is a terminal-specific PUCCH, and is configured to achieve the above.

[0138] In one embodiment, the processing module further When the first indication information indicates at least one of detecting a common PDCCH, the PTM mode, and receiving a PDSCH scheduled by the common PDCCH, the HARQ information of the terminal for the first 1 de data packet is configured to be detected by the first PUCCH resource. The first 1 de data packet is a data packet that the terminal has not successfully received via a PDSCH scheduled by the common PDCCH or a PDSCH transmitted through the PTM mode.

[0139] In one embodiment, the processing module further When the first indication information indicates at least one of detecting a terminal-specific PDCCH, the PTP mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH, the HARQ information of the terminal for the first 2 de data packet is configured to be detected by the second PUCCH resource. The first 2 de data packet is the first 2 de data packet transmitted via a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through the PTP mode.

[0140] In one embodiment, the processing module further When the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, PTP mode and PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the HARQ information of the terminal for the 3 de -th data packet is configured to be detected on the second PUCCH resource, the 3 de -th data packet is the same data packet that the terminal has not successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and a PDSCH scheduled by the terminal-specific PDCCH or transmitted through a PTP mode.

[0141] In one embodiment, the base station further includes a first determination module, the first determination module is configured to determine to detect the HARQ information of the terminal for the 3 de -th data packet on the second PUCCH based on a predefined first feedback policy, or to transmit second indication information to the terminal to instruct the terminal to feedback the HARQ information of the terminal for the 3 de -th data packet on the second PUCCH.

[0142] In one embodiment, the processing module further when the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, PTP mode and PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the base station is configured to detect the HARQ information of the terminal for the 4 de -th data packet on the second PUCCH resource, the 4 deThe data packet is a data packet that the terminal has successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and / or the same data packet that the terminal has successfully received via a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through a PTP mode.

[0143] In one embodiment, the base station further includes a first determination module. The first determination module is configured to determine to detect HARQ information for the data packet on the second PUCCH based on a predefined second feedback policy, or to transmit third indication information to the terminal to instruct the terminal to feedback HARQ information for the data packet on the second PUCCH. 4 de The data packet 4 de The data packet

[0144] It should be noted that the device in this embodiment is a device corresponding to the method shown in FIG. 3 above. All the implementation forms in the above embodiments are applicable to the implementation form of this device, and the same technical effects can be achieved. The above device according to the embodiment of the present disclosure can implement all the method steps implemented by the embodiment of the above method, and the same technical effects can be achieved. For the same parts and beneficial effects as those in the embodiment of the method in this embodiment, they will not be described in detail here.

[0145] Referring to FIG. 7, an embodiment of the present disclosure provides a structural schematic diagram of a network-side device (i.e., a base station). The network-side device includes a processor 701, a transceiver 702, a memory 703, and a bus interface.

[0146] In an embodiment of the present disclosure, the network-side device further includes a program stored in the memory 703 and executable by the processor 701. When the program is executed by the processor 701, To transmit first indication information to a terminal, where the first indication information is used to indicate at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation. Based on the first indication information, determine a PUCCH resource used for the terminal to perform HARQ feedback on the PDSCH, and detect HARQ feedback information transmitted from the terminal using the determined PUCCH resource.

[0147] In one embodiment, The PDCCH detection operation includes Detecting a terminal-specific PDCCH, Detecting a common PDCCH, Detecting either a common PDCCH or a terminal-specific PDCCH.

[0148] In one embodiment, the transmission mode of the multicast and / or broadcast service includes At least one of a PTP mode and a PTM mode.

[0149] In one embodiment, the PDSCH reception operation includes Receiving a PDSCH scheduled by a terminal-specific PDCCH, Receiving a PDSCH scheduled by a common PDCCH, Receiving a PDSCH scheduled by either a terminal-specific PDCCH or a common PDCCH.

[0150] In one embodiment, the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource. The first PUCCH resource is a PUCCH resource related to a common PDCCH or a PUCCH resource indicated by the common PDCCH. The second PUCCH resource is a PUCCH resource related to a UE-specific PDCCH or a PUCCH resource indicated by the UE-specific PDCCH.

[0151] In one embodiment, when executing the program, the processor further transmits configuration information of the first PUCCH resource to the UE. The first PUCCH resource is used for the UE to feedback HARQ information for the first PDSCH. The first PDSCH is a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through the PTM mode. The first PUCCH resource is a PUCCH shared by at least one UE, and transmits configuration information of the second PUCCH resource to the UE. The second PUCCH resource is used for the UE to feedback HARQ information for the second PDSCH. The second PDSCH is a PDSCH scheduled by a UE-specific PDCCH or a PDSCH transmitted through the PTP mode. The second PUCCH resource is a UE-specific PUCCH, thereby realizing the above functions.

[0152] In one embodiment, when executing the program, the processor further when the first indication information indicates at least one of detecting a common PDCCH, the PTM mode, and receiving a PDSCH scheduled by the common PDCCH, detecting HARQ information of the UE for the first 1 de data packet on the first PUCCH resource, where the first 1 deThe - data packet is a data packet that the terminal has not successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode.

[0153] In one embodiment, when executing the program, the processor further If the first indication information indicates at least one of detecting a terminal-specific PDCCH, a PTP mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH, then at the second PUCCH resource, the 2 de detecting the HARQ information of the terminal for the - data packet, where the 2 de - data packet is a - data packet transmitted via a PDSCH scheduled by a terminal-specific PDCCH or a PDSCH transmitted through a PTP mode. 2 de This is achieved.

[0154] In one embodiment, when executing the program, the processor further If the first indication information indicates at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, then at the second PUCCH resource, the 3 de detecting the HARQ information of the terminal for the - data packet, where the 3 de - data packet is the same data packet that the terminal has not successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through a PTP mode.

[0155] In one embodiment, when executing the program, the processor further Based on a predefined first feedback policy, it is determined to detect HARQ information for the second packet in the second PUCCH. 3 de Or, second indication information is transmitted to the terminal so as to instruct the terminal to feedback HARQ information for the second packet in the second PUCCH, thereby realizing this. In one embodiment, when the processor executes the program, further, 3 de when the first indication information instructs at least one of detecting a common PDCCH and a terminal-specific PDCCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal-specific PDCCH and the common PDCCH, the HARQ information of the terminal for the second packet is detected in the second PUCCH resource, where the second packet is a data packet that the terminal has successfully received via a PDSCH scheduled by a common PDCCH or a PDSCH transmitted through a PTM mode, and / or the same data packet that the terminal has successfully received via a PDSCH scheduled by the terminal-specific PDCCH or a PDSCH transmitted through a PTP mode, thereby realizing this.

[0156] In one embodiment, when the processor executes the program, further, Based on a predefined second feedback policy, it is determined to detect HARQ information for the second packet in the second PUCCH. 4 de Or, third indication information is transmitted to the terminal so as to instruct the terminal to feedback HARQ information for the second packet in the second PUCCH, thereby realizing this. 4 de

[0157] 4 de 4 de

[0158] ​​​​​​In an embodiment of the present disclosure, it can be understood that when the computer program is executed by the processor 701, each process of the method embodiment shown in FIG. 4 above can be realized, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0159] In FIG. 7, the bus architecture can include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 701 and various circuits of the memory represented by the memory 703 are linked together. The bus architecture can also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and will not be further described herein. The bus interface provides an interface. The transceiver 702 can be a plurality of elements including a transmitter and a receiver that provide a unit for communicating with various other devices over a transmission medium.

[0160] The processor 701 is responsible for the management of the bus architecture and general processing, and the memory 703 can store data used by the processor 701 when performing operations.

[0161] It should be noted that the network-side device in this embodiment is a device corresponding to the method shown in FIG. 4 above. All the implementation methods in the above embodiments are applicable to the embodiment of the network-side device, and the same technical effect can also be achieved. In this device, the transceiver 702 and the memory 703, and the transceiver 702 and the processor 701 may all be communicatively connected through the bus interface. The function of the processor 701 may also be realized by the transceiver 702, and the function of the transceiver 702 may also be realized by the processor 701. It should be noted that the above device according to the embodiment of the present disclosure can realize all the method steps realized by the embodiment of the above method, and the same technical effect can be achieved. For the same parts and beneficial effects as those in the method embodiment of this embodiment, they will not be described in detail here.

[0162] In some embodiments of the present disclosure, there is further provided a computer-readable storage medium storing a program, and when the program is executed by a processor, transmitting first indication information to a terminal, where the first indication information is used to instruct at least one of a PDCCH detection operation, a transmission mode of a multicast and / or broadcast service, and a PDSCH reception operation; determining a PUCCH resource used for the terminal to perform HARQ feedback on a PDSCH based on the first indication information, and detecting HARQ feedback information transmitted from the terminal using the determined PUCCH resource, are realized.

[0163] When the program is executed by a processor, all embodiments in the HARQ feedback method for a multicast and / or broadcast service applied to the base station side can be realized, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0164] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed in this specification can be realized by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software is determined by the specific application of the technical solution and design constraints. Those skilled in the art can use different methods to realize the functions described for each specific application, but such realization should not be regarded as exceeding the scope of the present disclosure.

[0165] Those skilled in the art can clearly understand that for the sake of convenience and brevity of description, the specific operation processes of the systems, apparatuses, and units described above can refer to the corresponding processes in the embodiments of the foregoing methods, and will not be repeated here.

[0166] In the embodiments provided by the present disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the division of the units is only a logical functional division, and there may be other division modes when actually implemented. For example, a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not executed. Also, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

[0167] The unit described as a separation member may or may not be physically separated. The member shown as a unit may or may not be a physical unit, that is, it may be located at one place or distributed among a plurality of network units. Some or all of the units therein can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0168] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may physically exist alone, or two or more units may be integrated into one unit.

[0169] When the above-mentioned function is realized in the form of a software function unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present disclosure may essentially or the part that contributes to the prior art or the part of the technical solution may be realized in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or some of the steps of the methods described in each embodiment of the present disclosure. The aforementioned storage medium includes various media that can store program codes such as USB flash disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0170] The above description is only specific embodiments of the present disclosure. The protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily conceive of changes or replacements within the technical scope disclosed in the present disclosure, and all these changes or replacements should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should follow the protection scope of the claims.

Claims

1. A hybrid automatic repeat request (HARQ) feedback method for multicast and / or broadcast services, comprising: A terminal receives first indication information transmitted from a network, wherein the first indication information is used to indicate a transmission mode of the multicast and / or broadcast service; The terminal determines a physical uplink control channel (PUCCH) resource used for performing HARQ feedback on a physical downlink shared channel (PDSCH) based on the first indication information; The transmission mode of the multicast and / or broadcast service includes: At least one of a point-to-point (PTP) mode and a point-to-multipoint (PTM) mode; The PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource; The first PUCCH resource is a PUCCH resource related to a common physical downlink control channel (PDCCH) or a PUCCH resource indicated by the common PDCCH, and the second PUCCH resource is a PUCCH resource related to a terminal-specific PDCCH or a PUCCH resource indicated by the terminal-specific PDCCH. A hybrid automatic repeat request (HARQ) feedback method for multicast and / or broadcast services.

2. The first indication information is further used to indicate a physical downlink control channel (PDCCH) detection operation, The PDCCH detection operation includes: Detecting a terminal-specific PDCCH; Detecting a common PDCCH; Detecting either a common PDCCH or a terminal-specific PDCCH. The method according to claim 1.

3. The first indication information is further used to indicate a physical downlink shared channel (PDSCH) reception operation, The PDSCH reception operation includes: Receiving a PDSCH scheduled by a terminal-specific PDCCH; Receiving a PDSCH scheduled by a common PDCCH; Receiving a PDSCH scheduled by both a terminal-specific PDCCH and a common PDCCH. The method according to claim 1.

4. The method further includes:

5.

6. The method further includes: The terminal is to receive configuration information of a first PUCCH resource transmitted from the network, where the first PUCCH resource is used for the terminal to feedback HARQ information for a first PDSCH, the first PDSCH is a PDSCH scheduled by a common PDCCCH or a PDSCH transmitted through a PTM mode, and the first PUCCH resource is a PUCCH shared by at least one terminal, and the terminal is to receive configuration information of a second PUCCH resource transmitted from the network, where the second PUCCH resource is used for the terminal to feedback HARQ information for a second PDSCH, the second PDSCH is a PDSCH scheduled by a terminal-specific PDCCCH or a PDSCH transmitted through a PTP mode, and the second PUCCH resource is a terminal-specific PUCCH, including The method according to claim 1.

5. The method further includes when the first indication information indicates at least one of detecting a common PDCCCH, a PTM mode, and receiving a PDSCH scheduled by a common PDCCCH when the terminal fails to successfully receive a first data packet transmitted via a PDSCH scheduled by a common PDCCCH or a PDSCH transmitted through a PTM mode, feedbacking HARQ information for the first data packet on the first PUCCH resource The method according to claim 1.

6. The method further includes when the first indication information indicates at least one of detecting a terminal-specific PDCCCH, a PTP mode, and receiving a PDSCH scheduled by a terminal-specific PDCCCH when the terminal fails to successfully receive a first data packet transmitted via a PDSCH scheduled by a common PDCCCH or a PDSCH transmitted through a PTM mode, feedbacking HARQ information for the first data packet on the first PUCCH resource The method according to claim 1.

7. The method further includes When the first indication information indicates at least one of detecting a common PD - CCH and a terminal - specific PD - CCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal - specific PD - CCH and the common PD - CCH When the terminal fails to receive a third data packet transmitted via a PDSCH scheduled by the common PD - CCH or a PDSCH transmitted through the PTM mode, and also fails to receive the same third data packet transmitted via a PDSCH scheduled by the terminal - specific PD - CCH or a PDSCH transmitted through the PTP mode, the terminal includes feeding back HARQ information for the third data packet on the second PUCCH The method according to claim 1

8. The method further includes The terminal includes determining to feed back HARQ information for the third data packet on the second PUCCH based on a predefined first feedback policy or second indication information transmitted from the network The method according to claim 7

9. The method further includes When the first indication information indicates at least one of detecting a common PD - CCH and a terminal - specific PD - CCH, a PTP mode and a PTM mode, and receiving a PDSCH scheduled by the terminal - specific PD - CCH and the common PD - CCH When the terminal successfully receives a fourth data packet transmitted via a PDSCH scheduled by the common PD - CCH or a PDSCH transmitted through the PTM mode, and / or successfully receives the same fourth data packet transmitted via a PDSCH scheduled by the terminal - specific PD - CCH or a PDSCH transmitted through the PTP mode, the terminal includes feeding back HARQ information for the fourth data packet on the second PUCCH The method according to claim 1

10. The method further includes Determining to feed back HARQ information for the fourth data packet on the second PUCCH based on a predefined second feedback policy or third indication information transmitted from the network The method according to claim 9.

11. A HARQ feedback method for multicast and / or broadcast services, wherein the base station transmits first indication information to the terminal, and the first indication information is used to indicate a transmission mode of the multicast and / or broadcast service; the base station determines a PUCCH resource used by the terminal to perform HARQ feedback on the PDSCH based on the first indication information, and detects HARQ feedback information transmitted from the terminal using the determined PUCCH resource; the transmission mode of the multicast and / or broadcast service includes at least one of a PTP mode and a PTM mode; the PUCCH resource includes a first PUCCH resource and / or a second PUCCH resource; the first PUCCH resource is a PUCCH resource related to a common PDCCCH or a PUCCH resource indicated by the common PDCCCH, and the second PUCCH resource is a PUCCH resource related to a terminal-specific PDCCCH or a PUCCH resource indicated by the terminal-specific PDCCCH. A HARQ feedback method for multicast and / or broadcast services.

12. A terminal, including a processor, a memory, and a program stored in the memory and executable by the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 1 to 10 are realized.

13. A base station, including a processor, a memory, and a program stored in the memory and executable by the processor, wherein when the program is executed by the processor, the steps of the method according to claim 11 are realized.

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