CN116602029A

CN116602029A - Wireless communication method, terminal device and network device

Info

Publication number: CN116602029A
Application number: CN202180079165.0A
Authority: CN
Inventors: 赵振山; 张世昌
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2023-08-15
Also published as: WO2022205413A1

Abstract

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which comprise the following steps: the terminal equipment receives first DCI, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data; the terminal equipment sends the feedback information of the first DCI, or determines whether the feedback information of the first DCI needs to be sent according to an uplink feedback mode of the multicast data, or determines whether the feedback information of the first DCI needs to be sent according to the first indication information, so that whether the terminal equipment needs to send the feedback information aiming at the first DCI to the network equipment can be determined.

Description

Wireless communication method, terminal device and network device

Technical Field

The embodiment of the application relates to the field of communication, and more particularly relates to a wireless communication method, terminal equipment and network equipment.

Background

In a multimedia broadcast multicast service (Multimedia Broadcast Multicast Service, MBMS) system, a network device may configure a Semi-persistent scheduling (Semi-persistent Scheduling, SPS) transmission resource for a terminal device, which SPS transmission resource is used to transmit multicast data, i.e., the network device transmits the multicast data to a group of terminal devices through the SPS transmission resource. The network device may activate or release the SPS transmission resource through downlink control information (Downlink Control Information, DCI), and when the terminal device receives the DCI for activating or releasing the SPS transmission resource, whether feedback information for the DCI needs to be sent to the network device is a technical problem to be solved in the present application.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, so that whether the terminal equipment needs to send feedback information aiming at DCI for activating or releasing SPS transmission resources to the network equipment or not can be determined.

In a first aspect, a wireless communication method is provided, including: the terminal equipment receives first DCI, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data; the terminal equipment sends feedback information of the first DCI, or determines whether the feedback information of the first DCI needs to be sent according to an uplink feedback mode of the multicast data, or determines whether the feedback information of the first DCI needs to be sent according to first indication information.

In a second aspect, there is provided a wireless communication method comprising: the terminal equipment receives second DCI, wherein the second DCI is used for releasing SPS transmission resources for transmitting multicast data; and the terminal equipment sends feedback information of the second DCI.

In a third aspect, a wireless communication method is provided, including: the network equipment sends first DCI to the terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data; the network equipment sends first indication information to the terminal equipment; the first indication information is used for indicating whether feedback information of the first DCI needs to be sent or not.

In a fourth aspect, there is provided a wireless communication method comprising: the network equipment sends first DCI to the terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data; if a feedback mode of feeding back NACK only and a feedback mode of feeding back ACK/NACK are configured for the multicast data, the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating an uplink feedback mode of the multicast data.

In a fifth aspect, a wireless communication method is provided, including: the network equipment sends second DCI to the terminal equipment, wherein the second DCI is used for releasing SPS transmission resources for transmitting multicast data; if a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK are configured for the second DCI, the network equipment sends fourth indication information to the terminal equipment; the fourth indication information is used for indicating a feedback mode of the second DCI.

A sixth aspect provides a terminal device for performing the methods of the first to second aspects or implementations thereof.

Specifically, the terminal device comprises functional modules for performing the methods of the first to second aspects or implementations thereof described above.

A seventh aspect provides a network device for performing the methods of the third to fifth aspects or implementations thereof.

In particular, the network device comprises functional modules for performing the methods of the third to fifth aspects described above or in various implementations thereof.

In an eighth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect to the second aspect or each implementation manner thereof.

In a ninth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the third aspect to the fifth aspect or each implementation manner thereof.

In a tenth aspect, there is provided an apparatus for implementing the method in any one of the first to fifth aspects or each implementation thereof.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method as in any one of the above first to fifth aspects or implementations thereof.

In an eleventh aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-mentioned first to fifth aspects or implementations thereof.

In a twelfth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the above first to fifth aspects or implementations thereof.

In a thirteenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the above-mentioned first to fifth aspects or implementations thereof.

To sum up, in this embodiment, when the terminal device receives the first DCI for activating the SPS transmission resource, the terminal device sends feedback information of the first DCI, or determines whether the feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data, or determines whether the feedback information of the first DCI needs to be sent according to the first indication information. When the terminal equipment receives second DCI, the second DCI is used for releasing SPS transmission resources for transmitting multicast data; and the terminal equipment sends feedback information of the second DCI.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 2 shows a schematic flow chart of a wireless communication method 200 according to an embodiment of the application;

fig. 3 shows a schematic flow chart of a wireless communication method 300 according to an embodiment of the application;

fig. 4 shows a schematic flow chart of a wireless communication method 400 according to an embodiment of the application;

fig. 5 shows a schematic flow chart diagram of a wireless communication method 500 according to an embodiment of the application;

fig. 6 shows a schematic block diagram of a terminal device 600 according to an embodiment of the application;

fig. 7 shows a schematic block diagram of a terminal device 700 according to an embodiment of the application;

fig. 8 shows a schematic block diagram of a network device 800 according to an embodiment of the application;

fig. 9 shows a schematic block diagram of a network device 900 according to an embodiment of the application;

fig. 10 shows a schematic block diagram of a network device 1000 according to an embodiment of the application;

fig. 11 is a schematic block diagram of a communication device 1100 according to an embodiment of the present application;

FIG. 12 is a schematic block diagram of an apparatus of an embodiment of the present application;

fig. 13 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art to which the application pertains without inventive faculty, are intended to fall within the scope of the application.

The embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio, NR system evolution system, LTE over unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U) system, NR over unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next generation communication system or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, and the like, to which the embodiments of the present application can also be applied.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a Stand Alone (SA) fabric scenario.

The frequency spectrum of the application of the embodiment of the application is not limited. For example, the embodiment of the application can be applied to licensed spectrum and unlicensed spectrum.

An exemplary communication system 100 to which embodiments of the present application may be applied is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and the communication system 100 may alternatively include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, as embodiments of the application are not limited in this regard.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.

It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The embodiments of the present application describe various embodiments in connection with a terminal device and a network device, wherein: a terminal device may also be called a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User device, or the like. The terminal device may be a Station (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, and a next generation communication system, such as a terminal device in an NR network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

The network device may be a device for communicating with the mobile device, the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an Access Point, or a vehicle device, a wearable device, and a network device in NR network or a base station (gNB) or a network device in future evolved PLMN network, etc.

In the embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

MBMS is a service introduced in The third generation partnership project (The 3rd Generation Partnership Project,3GPP) Release 6. MBMS is a technology for transmitting data from one data source to a plurality of terminal devices through a shared network resource, and is capable of effectively utilizing the network resource while providing a multimedia service, realizing broadcasting and multicasting of the multimedia service at a higher rate, e.g., 256 kbps.

Feedback mechanism for MBMS

In order to improve the reliability of MBMS service transmission, a feedback mechanism for MBMS service is introduced, and the specific feedback mechanism includes the following corresponding technical scheme.

Mode 1: and feeding back NACK information or ACK information, wherein each terminal device needing feeding back NACK has independent physical uplink control channel (Physical Uplink Control Channel, PUCCH) resources bearing NACK, and each terminal device needing feeding back ACK has independent PUCCH resources bearing ACK. And the terminal equipment decides to feed back corresponding ACK or NACK according to whether the MBMS data sent by the network equipment is correctly received.

Mode 2: only NACK information is fed back, and all terminal devices or a group of terminal devices share one PUCCH resource carrying NACK. When the terminal equipment correctly receives the MBMS data sent by the network equipment, feedback information, namely ACK information, does not need to be sent; when the terminal device does not correctly receive the MBMS data transmitted by the network device, feedback information, i.e., NACK information, needs to be transmitted.

It should be understood that in the present application, MBMS data is also referred to as multicast data, and will not be described in detail.

Activation and release of SPS transmission resources

The NR system supports the configuration of downlink SPS transmission resources for the terminal equipment and is used for transmitting periodic services to the terminal equipment. Typically, the network device configures SPS transmission resources for the terminal device through radio resource control (Radio Resource Control, RRC) signaling, and then activates or releases the SPS transmission resources through DCI. When the terminal device receives the DCI for activating the SPS transmission resource sent by the network device, the terminal device does not need to send feedback information for the DCI to the network device, but when the terminal device receives the DCI for releasing the SPS transmission resource sent by the network device, the terminal device needs to send feedback information for the DCI to the network device. The reasons are as follows: for activation of SPS transmission resources, after the network device sends DCI for activating SPS transmission resources, downlink data may be sent on the corresponding SPS transmission resources, and the terminal device is expected to send feedback information for the downlink data on the corresponding uplink resources. Therefore, the network device can determine whether the terminal device correctly receives the DCI according to whether feedback information for downlink data sent by the terminal device is received. However, for DCI for releasing SPS transmission resources, the terminal device is required to transmit feedback information for the DCI for the following reasons: for SPS resources, when a network device sends DCI for releasing the SPS resources, the network device usually reschedules the SPS resources, and if a terminal device does not correctly receive the DCI for releasing the SPS resources, the terminal device also detects downlink data on the original SPS resources and performs uplink feedback of the downlink data, thereby resulting in invalid uplink feedback.

In MBMS systems, the network device may also configure SPS transmission resources for the terminal devices, which SPS transmission resources are used to transmit multicast data, i.e. the network device sends the multicast data to a group of terminal devices through the SPS transmission resources. The network device may activate or release the SPS transmission resource through DCI, and when the terminal device receives the DCI for activating or releasing the SPS transmission resource, whether feedback information for the DCI needs to be sent to the network device is a technical problem to be solved in the present application.

The technical scheme of the application will be described in detail as follows:

fig. 2 shows a schematic flow chart of a wireless communication method 200 according to an embodiment of the application, the method comprising the steps of:

s210: the network device sends first DCI to the terminal device, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data.

S220: and the terminal equipment sends the feedback information of the first DCI.

For MBMS services, the network device typically transmits data, which may be referred to as multicast data, to a group of terminal devices by multicast. Wherein the channel carrying the multicast data is referred to as a group common physical downlink shared channel (Group Common PDSCH). The network device may configure the terminal device with SPS transmission resources for activating transmission of the multicast data.

It should be understood that, for the MBMS service, the multicast data is sent to a group of terminal devices, and the group of terminal devices needs to send uplink feedback information for the multicast data, which specifically may adopt two uplink feedback modes:

mode 1: each terminal device feeds back an ACK or NACK.

Mode 2: each terminal device only needs to feed back NACK.

When the uplink feedback mode configured by the network device for multicast data is a feedback mode of feeding back only NACK, the network device generally configures the same uplink feedback resource for a group of terminal devices for feedback of NACK.

For mode 1, each terminal device decides to send ACK or NACK according to whether multicast data is correctly received, the network device allocates independent uplink feedback transmission resources to each terminal device, and the network device can determine which terminal devices do not send uplink feedback information for multicast data according to the received uplink feedback information, so as to indirectly determine whether the terminal device correctly receives the first DCI, that is, if the network device receives the uplink feedback information for multicast data sent by the terminal device, such as ACK or NACK, it indicates that the terminal device receives the first DCI, and if the network device does not receive the uplink feedback information for multicast data, such as ACK or NACK, sent by the terminal device, it indicates that the terminal device does not receive the first DCI.

For mode 2, if the terminal device receives the multicast data correctly, it is not necessary to send the uplink feedback information for the multicast data, and only when the terminal device does not receive the multicast data correctly, it is necessary to send the uplink feedback information for the multicast data, that is, NACK, and the uplink feedback resources of the group of terminal devices are shared or identical, so the network device cannot determine which terminal devices sent the NACK and which terminals did not send the uplink feedback information. The terminals that do not transmit the uplink feedback information may include the following two types:

first category: such terminal devices do not correctly receive the first DCI, and therefore do not receive the multicast data sent by the network device on the SPS resource, and therefore do not send uplink feedback information for the multicast data.

The second category: the terminal equipment receives the first DCI correctly and receives the multicast data sent by the network equipment correctly on SPS resources, so that uplink feedback information for the multicast data is not sent.

Since both the above two types of terminal devices do not send uplink feedback information for multicast data, for a terminal device sending NACK feedback for multicast data, because a shared uplink feedback resource is adopted, the network device cannot distinguish which terminal devices sent NACK, so the network cannot determine whether any terminal device does not correctly receive the first DCI, and therefore, when the network device sends the first DCI, it is expected that each terminal device sends feedback information for the first DCI. Based on this, in this embodiment, each terminal device transmits feedback information of the first DCI.

Optionally, the network device may not configure an uplink feedback manner for the multicast data to the terminal device, or the network device configures the terminal device to not perform uplink feedback for the multicast data, where the terminal device needs to send feedback information of the first DCI.

Optionally, the feedback mode of the first DCI is a feedback mode of feeding back only NACK, or a feedback mode of feeding back ACK/NACK.

Alternatively, the feedback manner for the first DCI may be a feedback manner for feeding back only NACK, because if the network device detects the feedback information NACK for the first DCI, it may be determined that at least one terminal device in the group of terminal devices does not correctly receive the first DCI, and thus the network device may retransmit the first DCI.

Optionally, when the uplink feedback mode configured by the network device for the first DCI is a feedback mode that only feeds back NACK, the network device generally configures the same uplink feedback resource for a group of terminal devices to feed back NACK corresponding to the first DCI. When the uplink feedback mode configured by the network device for the first DCI is a feedback mode for feeding back ACK/NACK, the network device needs to configure uplink feedback resources for the first DCI for each terminal device, and the uplink feedback resources are used for the terminal device to send ACK or NACK feedback information for the first DCI.

Optionally, the feedback mode of the first DCI may be preconfigured information, or the network device may indicate the feedback mode of the first DCI through the third indication information, which is not limited by the present application.

Optionally, the third indication information is carried in a system information block (System Information Block, SIB) signaling, RRC signaling or DCI, but is not limited thereto.

To sum up, in this embodiment, when the terminal device receives the first DCI for activating the SPS transmission resource, the terminal device sends feedback information for the first DCI to the network device.

Fig. 3 shows a schematic flow chart of a wireless communication method 300 according to an embodiment of the application, the method comprising the steps of:

s310: the network device sends first DCI to the terminal device, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data.

S320: and the terminal equipment determines whether feedback information of the first DCI needs to be sent according to an uplink feedback mode of the multicast data.

As described above, there are two uplink feedback modes for multicast data, for the above mode 1, the network device may determine which terminal devices do not transmit uplink feedback information for multicast data according to the received uplink feedback information, so that it may indirectly determine whether the terminal device correctly receives the first DCI, that is, as long as the network device receives the uplink feedback information for multicast data transmitted by the terminal device, such as ACK or NACK, it indicates that the terminal device receives the first DCI, and conversely, if the network device does not receive the uplink feedback information for multicast data transmitted by the terminal device, such as ACK or NACK, it indicates that the terminal device does not receive the first DCI. Therefore, if a feedback mode of feeding back ACK/NACK is configured for the multicast data, the terminal device determines that the feedback information of the first DCI does not need to be sent.

With the above-described mode 2, if the terminal device correctly receives the multicast data, it is not necessary to send the uplink feedback information for the multicast data, and only when the terminal device does not correctly receive the multicast data, it is necessary to send the uplink feedback information for the multicast data, that is, NACK, and the uplink feedback resources of the group of terminal devices are shared or identical, so that the network device cannot determine which terminal devices sent NACK and which terminals did not send the uplink feedback information. Therefore, in this case, the terminal device is required to transmit feedback information of the first DCI.

Optionally, if a feedback mode of feeding back only NACK and a feedback mode of feeding back ACK/NACK are configured for the multicast data at the same time, the terminal device is required to send feedback information of the first DCI. Or if the feedback mode of feeding back only NACK and the feedback mode of feeding back ACK/NACK are configured for the multicast data at the same time, the network equipment can send second indication information to the terminal equipment, wherein the second indication information is used for indicating the uplink feedback mode actually adopted for the multicast data. Correspondingly, if the uplink feedback mode actually adopted for the multicast data is a feedback mode of feeding back only NACK, the terminal equipment determines that the feedback information of the first DCI needs to be sent. If the uplink feedback mode actually adopted for the multicast data is a feedback mode for feeding back the ACK/NACK, the terminal equipment determines that the feedback information of the first DCI does not need to be sent. The reason may be referred to the reason for determining whether the feedback information of the first DCI needs to be transmitted in the case of the above-described modes 1 and 2, and this will not be described in detail in the present application.

Optionally, the second indication information is carried in SIB signaling, RRC signaling or DCI, but is not limited thereto.

Optionally, the third indication information is carried in SIB signaling, RRC signaling or DCI, but is not limited thereto.

To sum up, in this embodiment, when the terminal device receives the first DCI for activating the SPS transmission resource, the terminal device determines whether feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data.

Fig. 4 shows a schematic flow chart of a wireless communication method 400 according to an embodiment of the application, the method comprising the steps of:

s410: the network device sends first DCI to the terminal device, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data.

S420: and the terminal equipment determines whether feedback information of the first DCI needs to be sent according to the first indication information.

The first indication information is used for indicating whether feedback information of the first DCI needs to be sent or not.

Optionally, if the uplink feedback mode actually adopted for the multicast data is a feedback mode of feeding back NACK, the first indication information is used for indicating feedback information of the first DCI to be sent; if the uplink feedback mode actually adopted for the multicast data is a feedback mode for feeding back the ACK/NACK, the first indication information is used for indicating that the feedback information of the first DCI does not need to be sent. That is, the network device may determine whether the terminal device needs to send feedback information of the first DCI according to an uplink feedback manner actually adopted by the multicast data, and indicate the feedback information to the terminal device through the first indication information.

Optionally, if the network device does not configure an uplink feedback manner for the multicast data to the terminal device, or the network device configures the terminal device to not perform uplink feedback for the multicast data, in this case, the first indication information is used to indicate that the terminal device needs to send feedback information of the first DCI.

It should be noted that, regarding how the network device determines whether the terminal device needs to send the feedback information of the first DCI according to the uplink feedback manner actually adopted by the multicast data, reference may be made to the above two embodiments, which is not repeated in the present application.

Optionally, the first indication information is carried in SIB signaling, RRC signaling or DCI, but is not limited thereto.

Alternatively, if the first indication information is carried in the DCI, the DCI is the first DCI, or may be other DCIs, which is not limited in the present application.

To sum up, in this embodiment, when the terminal device receives the first DCI for activating the SPS transmission resource, the terminal device determines whether feedback information of the first DCI needs to be transmitted according to the first indication information.

Fig. 5 shows a schematic flow chart of a wireless communication method 500 according to an embodiment of the application, the method comprising the steps of:

S510: the network device sends second DCI to the terminal device, wherein the second DCI is used for releasing SPS transmission resources for transmitting the multicast data.

S520: and the terminal equipment sends feedback information of the second DCI.

It should be understood that, for the second DCI for releasing SPS transmission resources for transmitting multicast data, the terminal device is required to transmit feedback information for the second DCI for the following reasons: for SPS resources for transmitting multicast data, when the network device sends a second DCI for releasing the SPS resources, the network device typically reschedules the SPS resources, and if the terminal device does not properly receive the second DCI, the terminal device also detects downlink data on the original SPS resources and performs uplink feedback of the downlink data, thereby resulting in invalid uplink feedback.

Optionally, a feedback manner of feeding back NACK is configured for the second DCI. Or, a feedback mode for feeding back ACK/NACK is configured for the second DCI. Or configuring a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK for the second DCI.

Alternatively, the feedback manner for the second DCI may be a feedback manner for feeding back only NACK, because if the network device detects feedback information NACK for the second DCI, it may be determined that at least one terminal device in the group of terminal devices does not correctly receive the second DCI, and thus the network device may retransmit the second DCI.

Optionally, when the uplink feedback mode configured by the network device for the second DCI is a feedback mode that only feeds back NACK, the network device generally configures the same uplink feedback resource for a group of terminal devices to feed back NACK corresponding to the second DCI. When the uplink feedback mode configured by the network device for the second DCI is a feedback mode for feeding back ACK/NACK, the network device needs to configure uplink feedback resources for the second DCI for each terminal device, and the uplink feedback resources are used for the terminal device to send ACK or NACK feedback information for the second DCI.

Optionally, the feedback mode of the second DCI may be preconfigured information, or the network device may indicate the feedback mode of the second DCI through fourth indication information, which is not limited by the present application.

Optionally, the fourth indication information is carried in SIB signaling, RRC signaling or DCI, but is not limited thereto.

Optionally, the network device may send fifth indication information to the terminal device to indicate whether feedback information for the second DCI needs to be sent, for the following reasons: if the network device does not configure the terminal device with an uplink feedback manner for the multicast data, or if the network device configures the terminal device not to perform uplink feedback for the multicast data, in this case, the terminal device only receives the multicast data and does not need to perform uplink feedback, so when the network device releases SPS resources for transmitting the multicast data, it may indicate to the terminal device that feedback information for the second DCI does not need to be sent, and even if the terminal device does not correctly receive the second DCI, the terminal device will not cause invalid uplink feedback.

To sum up, in this embodiment, when the terminal device receives the second DCI for releasing the SPS transmission resource, the terminal device needs to send feedback information of the second DCI.

It should be noted that, the technical solution of the present application is not only suitable for multicast transmission scenes, but also suitable for broadcast transmission scenes, and accordingly, the multicast data related to the present application may be replaced by broadcast data, which is not described herein.

Fig. 6 shows a schematic block diagram of a terminal device 600 according to an embodiment of the application. As shown in fig. 6, the terminal device 600 includes: a communication unit 610 and a processing unit 620. The communication unit 610 is configured to receive first downlink control information DCI, where the first DCI is used to activate a semi-persistent scheduling SPS transmission resource for transmitting multicast data. The communication unit 610 is further configured to send feedback information of the first DCI, or the processing unit 620 is configured to determine whether the feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data, or the processing unit 620 is configured to determine whether the feedback information of the first DCI needs to be sent according to the first indication information.

Optionally, the processing unit 620 is specifically configured to: if a feedback mode of only feeding back NACK is configured for multicast data, determining feedback information of the first DCI to be sent.

Optionally, the processing unit 620 is specifically configured to: if a feedback mode for feeding back the ACK/NACK is configured for the multicast data, determining that the feedback information of the first DCI does not need to be sent.

Optionally, the communication unit 610 is further configured to: if a feedback mode of feeding back NACK only and a feedback mode of feeding back ACK/NACK are configured for the multicast data, second indication information is obtained, and the second indication information is used for indicating an uplink feedback mode of the multicast data.

Optionally, the processing unit 620 is specifically configured to: if the uplink feedback mode of the multicast data is a feedback mode of feeding back only NACK, determining feedback information of the first DCI to be sent.

Optionally, the processing unit 620 is specifically configured to: if the uplink feedback mode of the multicast data is a feedback mode for feeding back the ACK/NACK, determining that the feedback information of the first DCI does not need to be sent.

Optionally, the second indication information is carried in SIB signaling, RRC signaling or DCI.

Optionally, the first indication information is used to indicate whether feedback information of the first DCI needs to be sent.

Optionally, the first indication information is carried in SIB signaling, RRC signaling or DCI.

Optionally, if the first indication information is carried in DCI, the DCI is the first DCI.

Optionally, the communication unit 610 is further configured to: and acquiring third indication information, wherein the third indication information is used for indicating a feedback mode of the first DCI.

Optionally, the third indication information is carried in SIB signaling, RRC signaling or DCI.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 600 according to the embodiment of the present application may correspond to the terminal device in the method embodiment corresponding to fig. 2 to 4, and the above and other operations and/or functions of each unit in the terminal device 600 are respectively for implementing the corresponding flow of the terminal device in the method embodiment corresponding to fig. 2 to 4, which are not described herein for brevity.

Fig. 7 shows a schematic block diagram of a terminal device 700 according to an embodiment of the application. As shown in fig. 7, the terminal device 700 includes: a communication unit 710 for: and receiving second DCI, wherein the second DCI is used for releasing SPS transmission resources for transmitting multicast data and sending feedback information of the second DCI.

Optionally, the communication unit 710 is further configured to: and if a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK are configured for the second DCI, fourth indication information is acquired. The fourth indication information is used for indicating a feedback mode of the second DCI.

Optionally, the fourth indication information is carried in SIB signaling, RRC signaling or DCI.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip.

It should be understood that the terminal device 700 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method corresponding to fig. 5, and the foregoing and other operations and/or functions of each unit in the terminal device 700 are respectively for implementing the corresponding flow of the terminal device in the embodiment of the method corresponding to fig. 5, which is not repeated herein for brevity.

Fig. 8 shows a schematic block diagram of a network device 800 according to an embodiment of the application. As shown in fig. 8, the network device 800 includes: a communication unit 810 for: and sending first DCI to the terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting the multicast data. And sending the first indication information to the terminal equipment. The first indication information is used for indicating whether feedback information of the first DCI needs to be sent or not.

Optionally, the communication unit 810 is further configured to: and sending third indication information to the terminal equipment, wherein the third indication information is used for indicating the feedback mode of the first DCI.

It should be understood that the network device 800 according to the embodiment of the present application may correspond to the network device in the method embodiment corresponding to fig. 4, and the foregoing and other operations and/or functions of each unit in the network device 800 are respectively for implementing the corresponding flow of the network device in the method embodiment corresponding to fig. 4, and are not repeated herein for brevity.

Fig. 9 shows a schematic block diagram of a network device 900 according to an embodiment of the application. As shown in fig. 9, the network device 900 includes: a communication unit 910 for: and sending first DCI to the terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting the multicast data. If a feedback mode of feeding back NACK only and a feedback mode of feeding back ACK/NACK are configured for the multicast data, second indication information is sent to the terminal equipment, and the second indication information is used for indicating an uplink feedback mode of the multicast data.

Optionally, the communication unit 910 is further configured to: and sending third indication information to the terminal equipment, wherein the third indication information is used for indicating the feedback mode of the first DCI.

It should be understood that the network device 900 according to the embodiment of the present application may correspond to the network device in the method embodiment corresponding to fig. 3, and the foregoing and other operations and/or functions of each unit in the network device 900 are respectively for implementing the corresponding flow of the network device in the method embodiment corresponding to fig. 3, and are not repeated herein for brevity.

Fig. 10 shows a schematic block diagram of a network device 1000 according to an embodiment of the application. As shown in fig. 10, the network device 1000 includes: a communication unit 1010 for: and sending second DCI to the terminal equipment, wherein the second DCI is used for releasing SPS transmission resources for transmitting the multicast data. And if a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK are configured for the second DCI, fourth indication information is sent to the terminal equipment. The fourth indication information is used for indicating a feedback mode of the second DCI.

It should be understood that the network device 1000 according to the embodiment of the present application may correspond to the network device in the method embodiment corresponding to fig. 5, and the foregoing and other operations and/or functions of each unit in the network device 1000 are respectively for implementing the corresponding flow of the network device in the method embodiment corresponding to fig. 5, and are not repeated herein for brevity.

Fig. 11 is a schematic block diagram of a communication device 1100 according to an embodiment of the present application. The communication device 1100 shown in fig. 11 comprises a processor 1110, from which the processor 1110 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 11, the communication device 1100 may also include a memory 1120. Wherein the processor 1110 may call and run a computer program from the memory 1120 to implement the methods in embodiments of the present application.

Wherein the memory 1120 may be a separate device from the processor 1110 or may be integrated into the processor 1110.

Optionally, as shown in fig. 11, the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 1130 may include, among other things, a transmitter and a receiver. Transceiver 1130 may further include antennas, the number of which may be one or more.

Optionally, the communication device 1100 may be a network device in the embodiment of the present application, and the communication device 1100 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 1100 may be specifically a terminal device in the embodiment of the present application, and the communication device 1100 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 12 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 1200 shown in fig. 12 includes a processor 1210, and the processor 1210 may call and execute a computer program from memory to implement the method according to the embodiment of the present application.

Optionally, as shown in fig. 12, the apparatus 1200 may further include a memory 1220. Wherein the processor 1210 may call and run computer programs from the memory 1220 to implement the methods of embodiments of the present application.

The memory 1220 may be a separate device from the processor 1210, or may be integrated into the processor 1210.

Optionally, the apparatus 1200 may also include an input interface 1230. Wherein the processor 1210 may control the input interface 1230 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the apparatus 1200 may further include an output interface 1240. Wherein processor 1210 may control the output interface 1240 to communicate with other devices or chips, and in particular may output information or data to other devices or chips.

Optionally, the apparatus may be applied to a network device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the apparatus may be applied to a terminal device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Alternatively, the device according to the embodiment of the present application may be a chip. For example, a system-on-chip or a system-on-chip, etc.

Fig. 13 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application. As shown in fig. 13, the communication system 1300 includes a terminal device 1310 and a network device 1320.

The terminal device 1310 may be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1320 may be used to implement the corresponding functions implemented by the network device or the base station in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device or a base station in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device or the base station in each method of the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device or a base station in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding flows implemented by the network device or the base station in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device or a base station in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device or the base station in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

the method comprises the steps that terminal equipment receives first downlink control information DCI, wherein the first DCI is used for activating semi-persistent scheduling SPS transmission resources for transmitting multicast data;

and the terminal equipment transmits the feedback information of the first DCI, or determines whether the feedback information of the first DCI needs to be transmitted according to the uplink feedback mode of the multicast data, or determines whether the feedback information of the first DCI needs to be transmitted according to the first indication information.
The method of claim 1, wherein the determining, by the terminal device, whether feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data includes:

if a feedback mode of only feeding back NACK is configured for the multicast data, the terminal equipment determines that feedback information of the first DCI needs to be sent.
The method of claim 1, wherein the determining, by the terminal device, whether feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data includes:

if a feedback mode of feeding back the ACK/NACK is configured for the multicast data, the terminal equipment determines that the feedback information of the first DCI does not need to be sent.
The method as recited in claim 1, further comprising:

if a feedback mode of feeding back NACK only and a feedback mode of feeding back ACK/NACK are configured for the multicast data, the terminal equipment acquires second indication information, wherein the second indication information is used for indicating an uplink feedback mode of the multicast data.
The method of claim 4, wherein the determining, by the terminal device, whether feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data includes:

if the uplink feedback mode of the multicast data is a feedback mode of feeding back only NACK, the terminal device determines that feedback information of the first DCI needs to be sent.
The method of claim 4, wherein the determining, by the terminal device, whether feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data includes:

If the uplink feedback mode of the multicast data is a feedback mode for feeding back ACK/NACK, the terminal equipment determines that the feedback information of the first DCI does not need to be sent.
The method according to any of claims 4-6, wherein the second indication information is carried in system information block, SIB, signaling, radio resource control, RRC, signaling or DCI.
The method of claim 1, wherein the first indication information is used to indicate whether feedback information of the first DCI needs to be transmitted.
The method of claim 8, wherein the first indication information is carried in SIB signaling, RRC signaling, or DCI.
The method of claim 9, wherein the DCI is the first DCI if the first indication information is carried in DCI.
The method according to any one of claims 1-10, further comprising:

the terminal equipment acquires third indication information, wherein the third indication information is used for indicating a feedback mode of the first DCI.
The method of claim 11, wherein the third indication information is carried in SIB signaling, RRC signaling or DCI.
The method of any of claims 1-12, wherein the feedback manner of the first DCI is a feedback manner of feeding back only a NACK or a feedback manner of feeding back an ACK/NACK.
A method of wireless communication, comprising:

the terminal equipment receives second DCI, wherein the second DCI is used for releasing SPS transmission resources for transmitting multicast data;

and the terminal equipment sends the feedback information of the second DCI.
The method of claim 14, wherein the step of providing the first information comprises,

configuring a feedback mode for feeding back NACK for the second DCI; or alternatively, the process may be performed,

configuring a feedback mode for feeding back ACK/NACK for the second DCI; or alternatively, the process may be performed,

and configuring a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK aiming at the second DCI.
The method as recited in claim 15, further comprising:

if a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK are configured for the second DCI, the terminal equipment acquires fourth indication information;

the fourth indication information is used for indicating a feedback mode of the second DCI.
The method of claim 16, wherein the fourth indication information is carried in SIB signaling, RRC signaling, or DCI.
A method of wireless communication, comprising:

the network equipment sends first DCI to the terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data;

the network equipment sends first indication information to the terminal equipment;

the first indication information is used for indicating whether feedback information of the first DCI needs to be sent or not.
The method of claim 18, wherein the first indication information is carried in SIB signaling, RRC signaling, or DCI.
The method of claim 19, wherein the DCI is the first DCI if the first indication information is carried in DCI.
The method according to any one of claims 18-20, further comprising:

the network device sends third indication information to the terminal device, wherein the third indication information is used for indicating a feedback mode of the first DCI.
The method of claim 21, wherein the third indication information is carried in SIB signaling, RRC signaling or DCI.
The method of any of claims 18-22, wherein the feedback mode of the first DCI is a feedback mode of feedback only NACK or a feedback mode of feedback ACK/NACK.
A method of wireless communication, comprising:

the network equipment sends first DCI to the terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data;

if a feedback mode of feeding back NACK only and a feedback mode of feeding back ACK/NACK are configured for the multicast data, the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating an uplink feedback mode of the multicast data.
The method of claim 24, wherein the second indication information is carried in SIB signaling, RRC signaling, or DCI.
The method according to claim 24 or 25, further comprising:

the network device sends third indication information to the terminal device, wherein the third indication information is used for indicating a feedback mode of the first DCI.
The method of claim 26, wherein the third indication information is carried in SIB signaling, RRC signaling or DCI.
The method of any one of claims 24-27, wherein the feedback mode of the first DCI is a feedback mode of feedback only NACK or a feedback mode of feedback ACK/NACK.
A method of wireless communication, comprising:

the network equipment sends second DCI to the terminal equipment, wherein the second DCI is used for releasing SPS transmission resources for transmitting multicast data;

if a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK are configured for the second DCI, the network equipment sends fourth indication information to the terminal equipment;

the fourth indication information is used for indicating a feedback mode of the second DCI.
The method of claim 29, wherein the fourth indication information is carried in SIB signaling, RRC signaling, or DCI.
A terminal device, comprising: a communication unit and a processing unit;

the communication unit is used for receiving first DCI, and the first DCI is used for activating semi-persistent scheduling SPS transmission resources for transmitting multicast data;

the communication unit is further configured to send feedback information of the first DCI, or the processing unit is configured to determine whether the feedback information of the first DCI needs to be sent according to an uplink feedback manner of the multicast data, or the processing unit is configured to determine whether the feedback information of the first DCI needs to be sent according to first indication information.
The terminal device according to claim 31, wherein the processing unit is specifically configured to:

and if a feedback mode of only feeding back NACK is configured for the multicast data, determining that feedback information of the first DCI needs to be sent.
The terminal device according to claim 31, wherein the processing unit is specifically configured to:

if a feedback mode for feeding back the ACK/NACK is configured for the multicast data, determining that the feedback information of the first DCI does not need to be sent.
The terminal device of claim 31, wherein the communication unit is further configured to:

if a feedback mode of feeding back NACK only and a feedback mode of feeding back ACK/NACK are configured for the multicast data, second indication information is obtained, wherein the second indication information is used for indicating an uplink feedback mode of the multicast data.
The terminal device according to claim 34, wherein the processing unit is specifically configured to:

if the uplink feedback mode of the multicast data is a feedback mode of feeding back only NACK, determining feedback information of the first DCI to be sent.
The terminal device according to claim 34, wherein the processing unit is specifically configured to:

If the uplink feedback mode of the multicast data is a feedback mode for feeding back ACK/NACK, determining that the feedback information of the first DCI does not need to be sent.
The terminal device according to any of the claims 34-36, wherein the second indication information is carried in SIB signaling, RRC signaling or DCI.
The terminal device of claim 31, wherein the first indication information is used to indicate whether feedback information of the first DCI needs to be sent.
The terminal device of claim 38, wherein the first indication information is carried in SIB signaling, RRC signaling, or DCI.
The terminal device of claim 39, wherein if the first indication information is carried in DCI, the DCI is the first DCI.
The terminal device according to any of the claims 31-40, wherein the communication unit is further adapted to:

and acquiring third indication information, wherein the third indication information is used for indicating a feedback mode of the first DCI.
The terminal device of claim 41, wherein the third indication information is carried in SIB signaling, RRC signaling, or DCI.
The terminal device of any of claims 31-42, wherein the feedback manner of the first DCI is a feedback manner of feeding back only a NACK or a feedback manner of feeding back an ACK/NACK.
A terminal device, comprising: a communication unit configured to:

receiving a second DCI, wherein the second DCI is used for releasing SPS transmission resources for transmitting multicast data;

and sending the feedback information of the second DCI.
The terminal device of claim 44, wherein the wireless communication network comprises,

configuring a feedback mode for feeding back NACK for the second DCI; or alternatively, the process may be performed,

configuring a feedback mode for feeding back ACK/NACK for the second DCI; or alternatively, the process may be performed,

and configuring a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK aiming at the second DCI.
The terminal device of claim 45, wherein the communication unit is further configured to:

if a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK are configured for the second DCI, fourth indication information is obtained;

the fourth indication information is used for indicating a feedback mode of the second DCI.
The terminal device of claim 46, wherein the fourth indication information is carried in SIB signaling, RRC signaling, or DCI.
A network device, comprising: a communication unit configured to:

transmitting first DCI to terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data;

sending first indication information to the terminal equipment;

the first indication information is used for indicating whether feedback information of the first DCI needs to be sent or not.
The network device of claim 48, wherein the first indication information is carried in SIB signaling, RRC signaling, or DCI.
The network device of claim 49, wherein the DCI is the first DCI if the first indication information is carried in DCI.
The network device of any one of claims 48-50, wherein the communication unit is further configured to:

and sending third indication information to the terminal equipment, wherein the third indication information is used for indicating the feedback mode of the first DCI.
The network device of claim 51, wherein the third indication information is carried in SIB signaling, RRC signaling, or DCI.
The network device of any of claims 48-52, wherein the feedback manner of the first DCI is a feedback manner of feedback only NACK or a feedback manner of feedback ACK/NACK.
A network device, comprising: a communication unit configured to:

transmitting first DCI to terminal equipment, wherein the first DCI is used for activating SPS transmission resources for transmitting multicast data;

if a feedback mode of feeding back NACK only and a feedback mode of feeding back ACK/NACK are configured for the multicast data, second indication information is sent to the terminal equipment, wherein the second indication information is used for indicating an uplink feedback mode of the multicast data.
The network device of claim 54, wherein the second indication information is carried in SIB signaling, RRC signaling, or DCI.
The network device of claim 54 or 55, wherein the communication unit is further configured to:

and sending third indication information to the terminal equipment, wherein the third indication information is used for indicating the feedback mode of the first DCI.
The network device of claim 56, wherein the third indication information is carried in SIB signaling, RRC signaling, or DCI.
The network device of any one of claims 54-57, wherein the feedback manner of the first DCI is a feedback manner of feeding back only a NACK or a feedback manner of feeding back an ACK/NACK.
A network device, comprising: a communication unit configured to:

transmitting second DCI to terminal equipment, wherein the second DCI is used for releasing SPS transmission resources for transmitting multicast data;

if a feedback mode for feeding back NACK and a feedback mode for feeding back ACK/NACK are configured for the second DCI, fourth indication information is sent to the terminal equipment;

the fourth indication information is used for indicating a feedback mode of the second DCI.
The network device of claim 59, wherein the fourth indication information is carried in SIB signaling, RRC signaling, or DCI.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 17.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 18 to 30.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 17.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 18 to 30.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 17.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 18 to 30.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 17.
A computer program product comprising computer program instructions which cause a computer to perform the method of any of claims 18 to 30.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 17.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 18 to 30.