CN112152761A

CN112152761A - Communication method, device and storage medium

Info

Publication number: CN112152761A
Application number: CN201910579265.4A
Authority: CN
Inventors: 胡丹; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-12-29
Anticipated expiration: 2039-06-28
Also published as: WO2020259611A1; CN112152761B

Abstract

The application provides a communication method, a communication device and a storage medium, wherein the method comprises the steps of receiving grouping information from network equipment, and receiving first data from the network equipment; the method comprises the steps of determining a first packet to which first data belongs, and determining whether feedback information needs to be sent to the network equipment according to indication information corresponding to the first packet, wherein the packet information indicates a first identifier included in one or more packets, the packet information further includes indication information corresponding to each packet, and the first packet is one of the one or more packets. After receiving the first data belonging to the packet which does not need to send feedback information to the network equipment, no matter whether the first data is analyzed correctly or not, no feedback information needs to be sent to the network equipment, and therefore the method and the device are beneficial to reducing feedback overhead of a communication system.

Description

Communication method, device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method, an apparatus, and a storage medium.

Background

The International Telecommunications Union (ITU) defines a variety of application scenarios for the fifth generation mobile communication system (5G) and future mobile communication systems, such as: enhanced mobile broadband (eMBB), high-reliability and low-latency communications (URLLC), and massive machine type communications (mtc).

In different application scenarios, a hybrid automatic repeat request (HARQ) feedback mechanism is usually adopted to ensure reliability of data transmission between a network device and a terminal device. The HARQ feedback mechanism can request the network equipment to retransmit when the data transmission fails, so that the reliability of the data transmission can be ensured. In addition, in the HARQ feedback mechanism, the transmitting end retransmits the data when receiving NACK fed back by the receiving end, thereby reducing the overall resource consumption of data transmission. However, when a large number of terminal devices simultaneously transmit feedback information to a network device in a communication system, the communication system overhead is very large. For example, in the third generation partnership project (3)^rdMultimedia Broadcast Multicast Service (MBMS) proposed in generation partnership project, 3GPP), if all terminal devices send feedback information to a network device, system overhead is also very large, and thus, at present, the MBMS does not support the HARQ feedback mechanism.

Disclosure of Invention

The application provides a communication method, a communication device and a storage medium, which are used for reducing feedback overhead of a communication system.

In a first aspect, the present application provides a communication method, which includes receiving packet information from a network device, receiving first data from the network device, determining a first packet to which the first data belongs, and determining whether it is necessary to send feedback information to the network device according to indication information corresponding to the first packet, where the first packet is one of one or more packets, the packet information indicates a first identifier included in the one or more packets, and the packet information further includes indication information corresponding to each packet. It should be understood that the first identity may identify one service, but may also identify a group of services.

The method may be performed by a communication apparatus, which may be a communication device or a communication apparatus capable of supporting the communication device to implement the functions required by the method, such as a system-on-chip. Illustratively, the communication device is a terminal device.

Based on the scheme, by grouping a plurality of services and configuring indication information for each group, the feedback mechanism can be started when some groups need to send feedback information to the network equipment, and the feedback mechanism is not started (or closed) when some services do not need to send feedback information to the network equipment. After receiving the first data in the packet belonging to the unopened feedback mechanism, no matter whether the first data is correctly analyzed or not, no feedback information needs to be sent to the network device, thus being beneficial to reducing the feedback overhead of the communication system. For example, when a service with a high transmission reliability requirement is divided into a packet and an open feedback mechanism is configured for the packet, the high transmission reliability requirement of the service data in the packet can be ensured, if applicable.

The indication information in this application includes, but is not limited to, any of the following six scenarios.

In case 1, the indication information includes a first type of parameter, wherein the first type of parameter is used to indicate feedback or no feedback.

In case 2, the indication information includes a second type of parameter, where the second type of parameter is used to represent a threshold of the feedback decision parameter. When the value of the feedback judgment parameter corresponding to the first data is determined to meet the threshold of the feedback judgment parameter, sending feedback information to the network equipment; or when the value of the feedback judgment parameter corresponding to the first data is determined not to meet the threshold of the feedback judgment parameter, not sending the feedback information to the network equipment. It is understood that satisfaction includes, but is not limited to, greater than, less than, greater than or equal to, less than or equal to, within a certain range, and the like.

Optionally, the feedback decision parameter includes any one or a combination of any more of the following: distance, Reference Signal Receiving Power (RSRP), signal to interference plus noise ratio (SINR). That is, the feedback decision parameter may be a distance, or RSRP, or SINR, or a distance and RSRP, or a distance and SINR, or RSRP and SINR, or a distance, RSRP and SINR. It should be noted that the distance may refer to a geographic distance. It should be noted that, when the feedback decision parameter is a distance, it is determined that the current actual distance (i.e., the value of the feedback decision parameter corresponding to the first data) is fed back within a distance range (threshold of the feedback decision distance), which may be a default; or it may be network device notified (e.g., notified in advance, or sent with the indication information); or may be pre-agreed with the network device or may be protocol predefined. Similarly, determining that the current actual distance is smaller than the threshold of the feedback judgment distance, or is larger than the threshold of the feedback judgment distance, may be a default; or may be network device informed; or may be pre-agreed with the network device or may be protocol predefined. The current value of RSRP (i.e. the value of the feedback decision parameter corresponding to the first data) is less than the threshold of RSRP and is not fed back, or is greater than the threshold of RSRP and is fed back, which may be a default, or is notified in advance by the network device, or is predefined by the protocol. When the feedback decision parameter is the SINR, it is determined that the current SINR value (i.e., the value of the feedback decision parameter corresponding to the first data) is less than the SINR threshold and is not fed back, and the threshold feedback greater than the SINR may be default, or notified in advance by the network device, or predefined by a protocol.

In case 3, the indication information includes a first type of parameter and a second type of parameter, wherein the first type of parameter and the second type of parameter can be referred to in the descriptions of case 1 and case 2 above.

When the indication information is the above situation 3, the indication information corresponding to the first packet may include a first type parameter and a second type parameter, and when it is determined that the first type parameter corresponding to the first packet to which the first data belongs represents feedback and the value of the feedback decision parameter corresponding to the first data meets the threshold of the feedback decision parameter, the feedback information is sent to the network device.

In one possible implementation, the first identifier may be a Temporary Mobile Group Identifier (TMGI), a group-radio network temporary identifier (G-RNTI), a Multicast Control Channel (MCCH), or a single cell multicast control channel (SC-MCCH).

It is to be understood that when a communication device performing the above method is in a Radio Resource Control (RRC) connected state, the first identity may be a G-RNTI; the first identifier may be TMGI, SC-MCCH, or MCCH when the communication apparatus performing the above method is in IDLE (IDLE) state. Specifically, optionally, whether the first identifier is an SC-MCCH or an MCCH may be determined by a transmission mode of the MBMS, for example, when the MBMS is a Multimedia Broadcast Single Frequency Network (MBSFN) transmission mode, the first identifier is the MCCH; when the MBMS is a single cell point-to-multipoint (SC-PTM) transmission mode, the first identifier is an SC-MCCH.

In order to further reduce the feedback overhead of the communication system, when it is determined that feedback information needs to be sent to the network device and it is determined that the feedback information meets a feedback condition, the feedback information is sent to the network device, wherein the feedback condition is as follows: the first data is not properly parsed.

In this application, the feedback information may be HARQ feedback information, or may also be CSI, or may also be HARQ feedback information and CSI. The specific feedback information may be what kind of feedback information is, and may be notified by the network device, or may be pre-agreed by the network device, or may be default, or may be predefined by a protocol.

In a second aspect, the present application provides a communication method, where the method includes configuring indication information for each packet, and sending packet information to a terminal device, where the packet information indicates a first identifier included in one or more packets, and the packet information further includes indication information corresponding to each packet. It should be understood that one or more first identifiers may be included in a packet.

The method may be performed by a communication apparatus, which may be a communication device or a communication apparatus capable of supporting the communication device to implement the functions required by the method, such as a system-on-chip. Illustratively, the communication device is a network device.

Based on the scheme, a plurality of services are grouped, and indication information is configured for each group, so that feedback information needs to be sent by some groups, namely a feedback mechanism is started; some services do not need to send feedback information, i.e. the feedback mechanism is not switched on (or switched off). After the terminal equipment receives the first data in the packet which belongs to the unopened feedback mechanism, no matter whether the first data is correctly analyzed, no feedback information needs to be sent. This helps to reduce the feedback overhead of the communication system (control information other than useful data is referred to as overhead). For example, when a service with a high transmission reliability requirement is divided into a packet and an open feedback mechanism is configured for the packet, the high transmission reliability requirement of the service data in the packet can be ensured, if applicable.

Each packet may be obtained by grouping a plurality of services by the network device, or each packet of completed packets may be directly stored in the network device.

In one possible implementation, the plurality of services may be grouped according to their service characteristics and/or service types. That is, a plurality of services may be grouped according to service characteristics, a plurality of services may be grouped according to service types, or a plurality of services may be grouped according to service types and service characteristics. The service characteristics comprise any one or combination of any more of service reliability requirements, service coverage capacity, service delay requirements, service data volume, service mobility requirements and service priority; the service type comprises any one of an enhanced mobile broadband eMBB, a high-reliability low-latency communication URLLC, a mass machine type communication mMTC, a vehicle networking (V2X) and an Internet of things (IoT).

In one possible implementation, the first identifier is TMGI, G-RNTI, MCCH, or SC-MCCH. It should be appreciated that when the terminal device is in a Radio Resource Control (RRC) connected state, the first identity may be a G-RNTI; when the terminal device is in an IDLE (IDLE) state, the first identifier may be TMGI, SC-MCCH, or MCCH. Specifically, optionally, whether the first identifier is an SC-MCCH or an MCCH may be determined by a transmission mode of the MBMS, for example, when the MBMS is a Multimedia Broadcast Single Frequency Network (MBSFN) transmission mode, the first identifier is the MCCH; when the MBMS is a single cell point-to-multipoint (SC-PTM) transmission mode, the first identifier is an SC-MCCH.

In this application, the indication information may include a first type of parameter, or the indication information includes a second type of parameter, or the indication information includes the first type of parameter and the second type of parameter. Wherein the first type of parameter is used for representing feedback or no feedback; the second type of parameter is used to represent a threshold of the feedback decision parameter, and the threshold of the feedback decision parameter is used to: when the value of the feedback judgment parameter corresponding to the first data is determined to meet the threshold of the feedback judgment parameter, sending feedback information; or when the value of the feedback judgment parameter corresponding to the first data is determined not to meet the threshold of the feedback judgment parameter, the feedback information is not sent.

Or the indication information may further include a preset condition, where the preset condition may be feedback when the feedback is greater than a threshold of SINR, or feedback when the feedback is greater than a threshold of RSRP, or feedback when the feedback falls within a certain distance range (i.e., a threshold of distance), and so on.

In one possible implementation, the feedback decision parameter includes any one or any combination of distance, RSRP, and SINR.

In this application, the feedback information may be HARQ feedback information, or may also be CSI, or may also be HARQ feedback information and CSI. The specific feedback information may be specified and notified to the terminal device, may be pre-agreed with the terminal device, may be default for the terminal device, or may be predefined by a protocol.

In one possible implementation, the grouping information may be sent to the terminal device through higher layer signaling; alternatively, the packet information may be transmitted to the terminal device by a system message.

In a third aspect, the present application provides a communication apparatus having a function of implementing the network device or the terminal device in the above embodiments. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or units corresponding to the above functions.

In one possible implementation, the communication device includes: a processor configured to support the communication apparatus to perform a corresponding function of the network device in the above-illustrated communication method. The communication device may also include a memory, which may be coupled to the processor, that retains program instructions and data necessary for the communication device. Optionally, the communication apparatus further comprises a transceiver for supporting communication between the communication apparatus and a terminal device or the like. The transceiver may be a separate receiver, a separate transmitter, a transceiver with integrated transceiving function, or an interface circuit.

In one possible implementation, the communication means may be a network device or may be a component of a network device, such as a chip or a system of chips or a circuit.

In another possible implementation, the communication device includes: a processor configured to support the communication apparatus to perform respective functions of the terminal device in the above-indicated communication method. The communication device may also include a memory, which may be coupled to the processor, that retains program instructions and data necessary for the communication device. Optionally, the communication apparatus further comprises a transceiver for supporting communication between the communication apparatus and a network device or the like. The transceiver may be a separate receiver, a separate transmitter, a transceiver with integrated transceiving function, or an interface circuit.

In one possible implementation, the communication means may be a terminal device or may be a component of a terminal device, such as a chip or a system of chips or a circuit.

In a fourth aspect, the present application provides a communication device for implementing any one of the above first aspect or the first aspect, or for implementing any one of the above second aspect or the second aspect, including corresponding functional units, respectively for implementing the steps in the above methods. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a possible implementation manner, the structure of the communication device includes a processing unit and a transceiver unit, and these units may perform corresponding functions in the foregoing method example, which is specifically referred to the detailed description in the method example, and are not described herein again.

In a fifth aspect, an embodiment of the present application provides a communication system, which includes a terminal device and a network device. The terminal device may be configured to perform any one of the methods in the first aspect or the first aspect, and the network device may be configured to perform any one of the methods in the second aspect or the second aspect.

In a sixth aspect, the present application provides a chip system comprising a processor. Optionally, a memory may be further included, the memory being configured to store a computer program, and the processor being configured to call up and run the computer program from the memory, so that the apparatus with the system-on-chip installed performs any one of the methods of the first aspect to the second aspect and possible embodiments thereof.

In a seventh aspect, an embodiment of the present application provides a computer storage medium, where instructions are stored, and when the instructions are executed on a computer, the computer is caused to execute the method in the first aspect or any possible implementation manner of the first aspect, or the computer is caused to execute the method in the second aspect or any possible implementation manner of the second aspect.

In an eighth aspect, embodiments of the present application provide a computer program product containing instructions that, when executed on a computer, cause the computer to perform the method of the first aspect or any possible implementation manner of the first aspect, or cause the computer to perform the method of the second aspect or any possible implementation manner of the second aspect.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided in the present application;

FIG. 2 is a schematic diagram of a suitable scenario provided herein;

fig. 3 is a schematic flow chart of a communication method provided in the present application;

fig. 4 is a schematic diagram of a mapping relationship between channels according to the present application;

fig. 5 is a schematic diagram of another mapping relationship between channels provided in the present application;

fig. 6 is a schematic structural diagram of a communication device provided in the present application;

fig. 7 is a schematic structural diagram of a communication device provided in the present application;

fig. 8 is a schematic structural diagram of a terminal device provided in the present application;

fig. 9 is a schematic structural diagram of a network device provided in the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically illustrates an architecture diagram of a communication system provided in the present application, which may include a network device and a terminal device. Fig. 1 illustrates an example including one network device 101 and two terminal devices 102. The network device 101 may communicate with the terminal device 102 in a wireless manner, and mainly utilizes a Uu air interface for transmission. The terminal devices 102 may communicate with each other in a wireless manner, mainly using air interface transmission of a Sidelink (SL), which may also be referred to as device-to-device (D2D), for example, in a V2X communication system, direct communication among V2V, V2P, and V2I is performed through the Sidelink, where the Sidelink is defined for direct communication between the communication device and the communication device, that is, communication between the communication device and the communication device does not need to be forwarded through a network device.

Wherein, 1) the communication between the network device and the terminal device is mainly the transmission of uplink signals and the transmission of downlink signals. For the transmission of downlink signals, a transmitting end is a network device, and a corresponding receiving end is a terminal device. For the transmission of uplink signals, a transmitting end is a terminal device, and a corresponding receiving end is a network device. The communication between the terminal devices is mainly signal transmission of D2D, the sending end is the terminal device, and the corresponding receiving end is also the terminal device. The present application does not limit the transmission direction of the signal.

2) The communication between the network device and the terminal device, and the communication between the terminal device and the terminal device may be performed through a licensed spectrum (licensed spectrum), may also be performed through an unlicensed spectrum (unlicensed spectrum), and may also be performed through both the licensed spectrum and the unlicensed spectrum, for example, the communication between the network device and the terminal device may be performed through both the licensed spectrum and the unlicensed spectrum, and the communication between the terminal device and the terminal device may be performed through both the licensed spectrum and the unlicensed spectrum. The spectrum below 6G, the spectrum above 6G, or both the spectrum below 6G and the spectrum above 6G may be used, and the present application does not limit the spectrum resources used by the network device and the terminal device, and between the terminal device and the terminal device.

3) Terminal equipment, including devices that provide voice and/or data connectivity to a user, may include, for example, handheld devices with wireless connection capability or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a vehicle-to-all (V2X) terminal device, a machine-to-machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a Mobile Station (MS), a remote station (remote station), an access point (access point, AP), a remote terminal (remote), an access terminal (access terminal), a user terminal (user terminal), a Mobile Terminal (MT), a mobile terminal (mobile terminal), a Virtual Reality (VR), an augmented reality (virtual reality), AR) terminal, wireless terminal in industrial control (industrial control), wireless terminal in self driving (self driving), wireless terminal in remote medical (remote medical), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), user agent (user agent), user equipment (user device), or the like. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.

By way of example, and not limitation, in the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable smart device or intelligent wearable equipment etc. is the general term of using wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A 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 realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.

4) Network devices, including, for example, Access Network (AN) devices, also referred to as radio access network devices, are devices for accessing terminal devices into a wireless network. Such as a base station (e.g., an access point), may refer to a device in an access network that communicates with wireless terminal devices over one or more cells over an air interface, and, for example, an access network device in vehicle-to-all (V2X) technology may be a Road Side Unit (RSU). The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The access network device may also coordinate attribute management for the air interface. Illustratively, the access network device may include an evolved Node B (NodeB) or eNB or e-NodeB in an LTE system or an LTE-a (long term evolution-advanced), or may also include a next generation Node B (gNB), a transmission reception Node (TRP) (also referred to as a transceiver Node), a baseband processing Unit (BBU) and a Radio frequency Unit (RRU), a BBU and an Active Antenna Unit (AAU) in a 5th generation NR system, or may also include a centralized Radio Unit (central, and distributed Radio Unit (CU) in a Cloud RAN system, or may also include a distributed Radio network Unit (CU), Wi-Fi) system, or may further include a Radio Network Controller (RNC), a network equipment controller (BSC), a network equipment transceiver station (BTS), a Home network equipment (e.g., Home evolved NodeB, or Home Node B, HNB), or may also include a base station, a small station, a micro station, etc., in a future communication network. The embodiments of the present application are not limited.

Of course, the network device may also include a core network device, a wireless relay device, a backhaul device, and the like, but since the technical solution provided in the embodiment of the present application mainly relates to an access network device, hereinafter, if there is no specific description, the "network device" described hereinafter refers to the access network device.

The various terminal devices and network devices described above may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted. If located on a vehicle (e.g. placed in or mounted in a vehicle), may be considered to be a vehicle terminal device, also referred to as an on-board unit (OBU), for example. The system can also be deployed on the water surface, or can also be deployed on airplanes, balloons and satellites in the air, which is not limited in the application.

In the present application, the communication system may be a global system for mobile communication (GSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a Worldwide Interoperability for Microwave Access (WiMAX) system, a Long Term Evolution (LTE) system, a 5G communication system (e.g., a new radio, NR) system, a communication system in which multiple communication technologies are merged (e.g., a communication system in which LTE technology and NR technology are merged), another communication system, e.g., a Public Land Mobile Network (PLMN) system, or another communication system that may appear in the future, and the present application is not limited.

In the present application, the communication system supports the HARQ feedback mechanism. The HARQ feedback mechanism specifically refers to: if the terminal equipment successfully receives the service data from the network equipment, the terminal equipment can perform HARQ-ACK feedback on an uplink, namely the feedback information sent to the network equipment by the terminal equipment is ACK; if the terminal device does not successfully receive (such as packet loss and decoding failure) the service data from the network device, the terminal device performs HARQ-NACK feedback on the uplink, that is, the feedback information sent to the network device by the terminal device is NACK. When the network device receives NACK fed back by the terminal device and the retransmission number has not reached the maximum retransmission number, the network device may then resend the service data transmitted last time to the terminal device, and the terminal device may combine the service data received again with the service data that has not been successfully received before to improve the reception performance. That is, the HARQ feedback mechanism may request retransmission when transmission fails, which may improve reliability of data transmission.

The HARQ feedback mechanism supports one initial transmission and at least one retransmission. In the initial transmission and the subsequent retransmission of the service data, the specific transmission is based on the content of the service data after the data channel coding. For example, in the LTE system, the data channel adopts Turbo coding, and the content of different codes of the same service data may be indicated by a Redundancy Version (RV) sequence number in the control information. For another example, the data channel of the NR system may use Low Density Parity Check (LDPC) coding, and the NR system supports link adaptation (link adaptation) -based data channel transmission, that is, different coding modulation schemes (including but not limited to a code rate and a modulation order) are selected according to different channel conditions. Due to the difference of the coding characteristics, the LDPC code-based data channel link adaptation mode may be different from the Turbo code-based mode. In the NR system, the content of the same service data after different encoding may be indicated by the redundancy version number in the control information, or may be indicated by other indication information, such as the redundancy version configured by the higher layer parameter. It should be understood that the encoded information of the service data transmitted in the initial transmission and the retransmission may be the same or different.

It should be noted that, a terminal device may support at least one HARQ process, and after a certain traffic data of one HARQ process is successfully received, the memory (e.g., soft buffer) for storing the transmission is emptied to prepare to receive new traffic data using the HARQ process. In one HARQ process, the network device may indicate whether the service data carried at this time is initially transmitted or retransmitted during scheduling. For example, in an LTE system, one HARQ process may carry one or two service data simultaneously, and when carrying two service data, the two service data may adopt different coding modulation schemes. In one transmission, two service data may be newly transmitted, retransmitted or newly transmitted and retransmitted.

The form and number of the network devices and the terminal devices shown in fig. 1 are only for example and do not constitute a limitation to the present application.

Before introducing the method of the present application, based on the communication system architecture introduced in fig. 1, the application scenario involved in the present application is further described to facilitate understanding of the present solution. It should be noted that the system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and as a person having ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Fig. 2 shows an applicable scenario provided by the present application. In this applicable scenario, terminal device 201 may receive traffic data from network device 202, network device 203, and network device 204. The service types or service characteristics of the service data sent by different network devices may be different, and the same network device may also send different types of service data. For example, the network device 202 may transmit the traffic data of the traffic type URLLC traffic to the terminal device 201, the network device 203 may transmit the traffic data of the traffic type IoT traffic to the terminal device 201, and the network device 204 may transmit the traffic data of the traffic type eMBB traffic to the terminal device 201. The URLLC service mainly has ultrahigh reliability (block error rate (BLER) at least reaches 99.999%), low delay (end-to-end delay needs less than 1ms), less transmitted data amount, and burstiness, and is mainly applied to wireless control in industrial manufacturing or production flow, motion control of unmanned vehicles and unmanned airplanes, and haptic interaction applications such as remote repair and remote operation. The IoT service occupies narrow bandwidth, has low power consumption and wide coverage, can be repeatedly transmitted, and can ensure certain reliability. The eMBB service mainly has characteristics of large transmission data volume and high transmission rate, and is mainly applied to ultra high definition video, Augmented Reality (AR), Virtual Reality (VR), and the like. In this scenario, if the terminal device sends feedback information to the network device after receiving the service data, the problem of relatively high overhead of the communication system may be caused.

In view of the above technical problems, the following describes technical solutions provided by embodiments of the present application with reference to the accompanying drawings.

Fig. 3 illustrates an example of a communication method provided in an embodiment of the present application. In the following description, the communication method is applied to the network architecture shown in any one of fig. 1 to 2 as an example. In addition, the method may be performed by two communication apparatuses, for example, a first communication apparatus and a second communication apparatus, where the first communication apparatus may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or the first communication apparatus may be a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and may of course be other communication apparatuses such as a system on chip. The same applies to the second communication apparatus, which may be a network device or a communication apparatus capable of supporting the network device to implement the functions required by the method, or a terminal device or a communication apparatus capable of supporting the terminal device to implement the functions required by the method, and of course, other communication apparatuses such as a system on a chip may also be used. The implementation manners of the first communication device and the second communication device are not limited, for example, the first communication device may be a network device, the second communication device is a terminal device, or the first communication device is a network device, and the second communication device is a communication device capable of supporting the terminal device to implement the functions required by the method, or the first communication device is a terminal device, and the second communication device is a network device, and the like.

For ease of description, in the following, the method is performed by a network device and a terminal device as an example. As shown in fig. 3, the method includes the following steps.

Step 301, the network device configures indication information for each packet.

This step 301 is an optional step.

Each packet in the network device may be obtained by grouping a plurality of services by the network device, or each packet that has completed grouping may be directly stored in the network device, which is not limited in this application.

The network device groups the plurality of services in different ways, as detailed in three exemplary implementations below.

In a first implementation, the network device may group multiple services according to service characteristics. It can also be understood that the traffic divided into one packet has relatively close traffic characteristics. Among them, the service characteristics include but are not limited to: service reliability requirements, service coverage capability, service latency requirements, service data volume, service mobility requirements, or service priority.

It should be noted that, when the network device groups a plurality of services according to the service characteristics, the network device may group the services according to one service characteristic, or group the services according to a combination of a plurality of service characteristics, which is not limited in this application.

The grouping of network devices according to traffic characteristics is described in detail below with reference to specific examples.

Example one, based on traffic coverage capabilities.

The network device may group the plurality of services according to the service coverage capabilities in the service characteristics. For example, the traffic with stronger coverage capability may be classified into one packet, and the traffic with weaker coverage capability may be classified into another packet. Exemplarily, since the coverage of the IoT traffic and the MTC traffic is wide, that is, the IoT traffic and the MTC traffic have strong coverage capability, the IoT traffic and the MTC (such as eMTC or MTC) traffic may be divided into one group, and the rest of the traffic may be divided into another group. For another example, the coverage capability may be divided into three levels, i.e., high, medium, and low, with one level corresponding to one packet.

Example two, based on business reliability requirements.

The network device may group multiple services according to service reliability requirements in the service characteristics. For example, traffic with higher reliability requirements is grouped into one group, and traffic with looser reliability requirements is grouped into another group. Illustratively, traffic with reliability requirements greater than 99.999% (e.g., URLLC traffic) may be grouped into one group, with the remaining traffic (e.g., eMBB traffic and other traffic) being grouped into another group.

Example three, based on service coverage capability and service reliability requirements.

The network device may group multiple services according to a combination of service coverage capabilities and service reliability requirements in the service characteristics. For example, the service with stronger service coverage capability and higher service reliability requirement is divided into one group, and the rest services are divided into another group. For another example, the services with strong service coverage and low service reliability requirements are grouped into one group, and the rest services are grouped into another group. For another example, the services with weak service coverage and high service reliability requirements are grouped into one group, and the rest services are grouped into another group. For another example, the services with weak service coverage and low service reliability requirements are grouped into one group, and the rest services are grouped into another group. That is to say, when grouping is performed according to a combination of multiple services, the network device may determine which service characteristics to combine according to actual requirements, which is not limited in this application.

In the second implementation manner, the network device may group a plurality of services according to the service type. It can also be understood that the services grouped into a packet have the same service type.

In this application, the service types include, but are not limited to: eMBB, URLLC, mMTC, V2X, and IoT. For example, a service whose service type belongs to the eMBB may be classified into one group, and the rest of the services may be classified into another group; or the service with the service type belonging to V2X can be divided into one group, and the rest services can be divided into another group; or the services with the service type of eMBB can be divided into one group, the services with the service type of V2X can be divided into another group, the services with the service type of IoT can be divided into another group, and the rest services can be divided into another group; or one packet for each traffic type, etc.

And the network equipment groups a plurality of services according to the service types and the service characteristics. It can also be understood that the services grouped into a group have the same service type and have similar service characteristics.

Illustratively, the network device may separate traffic of a traffic type belonging to URLLC with a reliability requirement higher than 99.9999% into one packet and traffic of a traffic type belonging to URLLC with a reliability requirement lower than 99.9999% into another packet. It is also understood that there may be differences between traffic characteristics of traffic data belonging to the same traffic type. The network equipment groups a plurality of services according to the service types and the service characteristics, so that the service data divided into one group has more similar characteristics, each group is more precise, and the feedback efficiency is improved.

In the fourth implementation, the network device may also divide a service into one packet. I.e. one service for each packet. In this way, the network device configures indication information for each group, that is, the network device configures indication information for each service. In this way, when there are multiple downlinks for one service, the network device may configure one piece of indication information for the 5 downlinks, and it is not necessary to indicate whether to feed back for each link, so that the efficiency of sending feedback information may be improved more accurately.

The four grouping modes are only examples, and the application does not limit how to group. In addition, the network device selects which implementation manner to group, and may be selected by the network device itself, for example, the network device may select randomly, or the network device may also select according to some factors, for example, in a case that the network device needs to determine that the terminal device receives service data with a certain service characteristic or certain service characteristics, then the network device may select the implementation manner one to group; alternatively, which implementation group is selected as above may also be predefined by the protocol. This is not limited by the present application.

The above-mentioned packets include the first identifier, and the first identifier in each packet is different, and it can also be understood that the packets are embodied in different first identifiers. The first identifier may be a service identifier, and the service identifier may distinguish different services. In one possible implementation, the first identifier may identify a service. In another possible implementation, the first identifier may identify a group of services. As follows to facilitate the understanding of the scheme, it is described by taking an example that one first identifier can identify one service, i.e. different services can be distinguished by different first identifiers. That is, a first identity may identify a service. Illustratively, the first identifier may be TMGI, or G-RNTI, or MCCH, or SC-MCCH. A TMGI is a unique identifier of a service (e.g., a broadcast multicast service), i.e., the TMGI can be used to distinguish between different services; further, the TMGI consists of two fields, PLMN ID and service identification (service ID). One service is configured with one SC-MCCH in a specific cell or one MCCH in an MBSFN area, that is, both SC-MCCH and MCCH can uniquely identify one service. It should be noted that TMGI, SC-MCCH, or MCCH may be used to identify a service when the terminal device is in IDLE (IDLE) state. When the terminal device is in a Radio Resource Control (RRC) connected state, that is, after the terminal device establishes a connection with the network device, the network device may allocate a service identifier, such as G-RNTI, to each service, that is, when the terminal device is in an RRC connected state, the transmitted service may be identified by the G-RNTI; further, the G-RNTI is a scrambling code scrambled by MTCH or SC-MTCH.

Illustratively, taking the example that three first identifiers (i.e. the first identifier 1, the first identifier 2 and the first identifier 3) are included in the group #1 and two first identifiers (i.e. the first identifier 4 and the first identifier 5) are included in the group #2, if the first identifier is the TMGI, the group #1 includes the TMGI-1, the TMGI-2 and the TMGI-3, and the group #2 includes the TMGI-4 and the TMGI-5. Alternatively, the group #1 ═ { TMGI-1, TMGI-2, TMGI-3}, and the group #2 ═ TMGI-4, TMGI-5}, which is merely exemplary, and other possible forms may also be used, for example, for each first identifier, to indicate the group to which each first identifier belongs, which is not limited in the present application. Similarly, if the first identifier is G-RNTI, group #1 is { G-RNTI-1, G-RNTI-2, G-RNTI-3}, group #2 is { G-RNTI-4, G-RNTI-5}, if the first identifier is SC-MCCH, group #1 is { SC-MCCH-1, SC-MCCH-2, SC-MCCH-3}, group #2 is { SC-MCCH-4, SC-MCCH-5}, if the first identifier is MCCH, group #1 is { MCCH-1, MCCH-2, MCCH-3}, and group #2 is { MCCH-4, MCCH-5 }.

For the MBMS service, when the first identifier is the TMGI, 2 bits can be identified because the TMGI is 5 to 8 bits, that is, the minimum is 5 bits⁵32 services; the maximum is 8 bits, and 2 can be identified⁸256 services. That is, the number of packets is related to the bits of the TMGI, and if the bits of the TMGI are 5, the maximum number of packets is 32; if the TMGI has 8 bits, the maximum number of packets is 256.

Based on the above-mentioned packets, the network device may configure indication information for each packet. In this application, the indication information may include, but is not limited to, a combination of one or more of the following illustrated scenarios.

In case 1, the indication information may include a first type parameter indicating feedback or no feedback.

In this case 1, the indication information may be a feedback switch. Specifically, two states may be included: one is on and the other is off. Illustratively, ON may be represented by a high level parameter being ON and OFF by a high level parameter being OFF; or the on is represented by the high-level parameter being set to 1, and the off is represented by the high-level parameter being set to 0; or may be in other forms that can distinguish between on and off, and the specific representation forms of on and off are not limited in this application. When the state of the feedback switch corresponding to one packet #1 is on, it indicates that the terminal device needs to send feedback information to the network device after receiving the data belonging to the service in the packet # 1. Accordingly, when the state of the feedback switch corresponding to one packet #2 is off, it indicates that the terminal device does not need to send feedback information to the network device after receiving the data belonging to the service in the packet # 2. Or the indication information may also be an indication field, and the network device and the terminal device may agree in advance on the specific form of feedback and non-feedback. Or the indication information may be a higher layer parameter, such as RRC signaling.

The network device configures which indication information for which packets, as follows, gives four ways how the network device determines which indication information to configure for which packets.

The first method is as follows: the network device may configure indication information for each packet based on the traffic characteristics of each packet. For example, for a packet with high service reliability requirement, indication information representing feedback may be configured; for packets with low traffic reliability requirements, indication information indicating no feedback may be configured. Taking the indication information as the feedback switch as an example, the network device may set the state of the feedback switch configured for the packet with higher service reliability requirement as on, and set the state of the feedback switch configured for the packet with lower service reliability requirement as off. Or, for the packet with higher service reliability requirement, a more stable technology is adopted during service data transmission, and the transmission reliability can be ensured to a certain extent, so that indication information indicating no feedback can be configured; for the packets with lower service reliability requirements, the bit error rate or the block error rate is about 90%, and the reliability requirements can be met by one-time transmission, so that indication information indicating no feedback can be configured. For another example, for a packet with a high service delay requirement (i.e., a low requirement delay), because the service in the packet has a limited time budget for transmission, if the terminal device fails to receive the first data to be initially transmitted and then sends the feedback information to the network device, the time budget may exceed a preset time, so that the transmission of the feedback information is invalid, and therefore, for such a packet with a low service delay requirement, the network device will usually transmit the first data multiple times. That is, the network device may configure indication information representing no feedback for the packet; for packets with low service delay requirements (i.e., requiring high delay), the network device may configure the indication information indicating feedback, so as to improve the reliability of data transmission. Still taking the indication information as the feedback switch as an example, the network device may set the state of the feedback switch configured for the packet with lower service delay requirement as on, and set the state of the feedback switch configured for the packet with higher service delay requirement as off. For another example, for a packet with a high service reliability requirement and a high service delay requirement, indication information indicating no feedback may be configured, because the service reliability requirement is high, that is, the error rate or the block error rate is required to reach 99.999% or is required to be higher, a more stable technique may be adopted during service data transmission, and the reliability of transmission may be ensured to a certain extent, in this case, feedback may not be needed, and because the service delay requirement is also high, that is, the delay is required to be low, in order to prevent the retransmission time from exceeding the budget time, the retransmission is invalid transmission, and feedback to the network device is not needed. It should be understood that the service delay requirement, the service reliability requirement, etc. of each service data may be determined according to quality of service (QoS).

The second method comprises the following steps: the network device may configure indication information for each packet according to the service type of each packet. For example, the network device may configure the packets with the traffic type belonging to URLLC with indication information indicating feedback, and configure the packets with other traffic types with indication information indicating no feedback.

The third method comprises the following steps: the network device may configure indication information for each packet according to the current communication state (which may also be understood as link resource) of the terminal device and the network device. For example, retransmissions may cause transmission congestion. Based on the communication status, the network device may configure indication information for each packet to indicate no feedback. Particularly, each packet of service is an MBMS service, and since the MBMS service is a service in which a network device transmits first data to a plurality of terminal devices, if the plurality of terminal devices transmit feedback information to the network device at the same time, link resources may be insufficient, thereby causing transmission congestion.

The method is as follows: the network device may configure information for each group according to the occupation of current resources (e.g., time-frequency resources), for example, the current resources are in short supply and there is no resource for transmitting feedback information, and the network device may configure indication information for indicating no feedback for each group. When the packets are for the MBMS service, the network device may close the HARQ feedback mechanism, specifically, may notify the terminal device to close the HARQ feedback mechanism through a higher layer signaling, or may configure indication information for indicating no feedback for each packet.

The above four ways of configuring the indication information for each packet are only examples, and the present application is not limited to configuring the indication information for each packet. In addition, the network device selects which of the above manners to configure the indication information for each group, and may be selected by the network device itself, for example, the network device may select randomly, or the network device may select according to some factors, for example, if the current resource is in short supply, the network device may select the above manner four to configure the indication information for each group; alternatively, the above method may be selected to configure the indication information for each packet, or may be predefined by a protocol. This is not limited by the present application.

In case 2, the indication information may include a second type of parameter, and the second type of parameter is used to represent a threshold of the feedback decision parameter. Wherein, the feedback decision parameter may include any one or a combination of any more of the following: distance, RSRP, SINR. That is, the feedback decision parameter may be a distance, or RSRP, or SINR, or a distance and RSRP, or a distance and SINR, or RSRP and SINR, or a distance, RSRP and SINR. The above listed feedback decision parameters are only examples, and the present application does not limit the content of the feedback decision parameters.

The distance may refer to a geographical distance (geographic distance) between the terminal device and the network device, and the geographical distance represents an absolute distance between the network device and the terminal device. It can be understood that, for the terminal device at the cell center, the distance from the terminal device to the network device is short, and the transmission effect between the network device and the terminal device is considered to be better at this time. For the terminal device at the cell edge, the distance from the network device is long, so that a good transmission effect may not be obtained. That is, when the distance between the network device and the terminal device may be smaller than a certain value, a better transmission effect may be obtained. Therefore, when the distance is a feedback decision parameter, the threshold of the distance may be a specific distance value (hereinafter, may be referred to as a first distance value). Or, if the distance between the terminal device and the network device is too close, for example, the terminal device is under the network device, and the terminal device is in a blind area covered by the network device at this time, even if the terminal device sends feedback information that the data is not successfully received to the network device, the network device may not receive the feedback information; or even if the network device receives the feedback information of the terminal device and retransmits the service data, the terminal device is in a blind area covered by the network device, and therefore the terminal device can not successfully receive the retransmitted service data. That is, if the distance between the network device and the terminal device is short, a good transmission effect cannot be obtained. Therefore, when the distance is a feedback decision parameter, the threshold of the distance may also be a specific distance value (hereinafter may be referred to as a second distance value). Or, because a good transmission effect cannot be obtained when the distance between the terminal device and the network device is too close or too far, it is meaningful for the terminal device to send feedback information to the network device when the distance between the network device and the terminal device is within a certain range. It is also understood that, when the distance is a feedback decision parameter, the threshold of the distance may be a distance range. It should be noted that, when the distance is used as the feedback decision parameter, the threshold of the feedback decision parameter may be a value of a certain distance, or may be a distance range. And when the distance is used as a feedback judgment parameter, the current channel condition does not need to be considered. In addition, the threshold of the distance or the value of a certain distance may be an empirical value, a historical data statistical value, a typical value, or the like, and the value of a certain distance or the corresponding distance range corresponding to the threshold of the feedback decision parameter may make the distance between the terminal device and the network device meet the condition of normal communication.

The RSRP is a related parameter that can represent the strength of a radio signal in a communication system, and refers to an average value of signal power received on all Resource Elements (REs) carrying reference signals within a certain symbol. It can be understood that when the RSRP value is small, it indicates that the radio signal coverage is relatively poor, for example, when the RSRP of the receiving end is-105 dBm, the radio signal coverage is poor, and the service is basically unable to initiate a call. When the RSRP value is small, the terminal device sends feedback information to the network device, and the network device may not receive the feedback information, or even if the network device receives the feedback information of the terminal device and retransmits the service data, the terminal device may still not successfully receive the retransmitted service data due to poor coverage of the wireless signal. That is to say, when the RSRP value is small, the terminal device sends feedback information to the network device, and a good transmission effect cannot be obtained. When the RSRP value is large (e.g., -75dBm), it indicates that the coverage of the radio signal is good, and in this case, the terminal device sends feedback information to the network device, and a good transmission effect may be obtained. Similarly, the RSRP threshold may be an empirical value, a statistical value of historical data, a typical value, or the like, and the RSRP threshold may be within a threshold that enables the terminal device and the network device to be more consistent with normal communication.

The SINR may also be referred to as a signal-to-interference-and-noise ratio, and refers to a ratio of the strength of a useful signal received by a terminal device to the strength of an interference signal (noise and interference). It will be appreciated that a smaller value of SINR may indicate poorer channel conditions, or receiver noise, or a lower level of useful transmission power received by the receiver. Under the condition that the SINR value is small, the terminal device sends feedback information to the network device, and the network device may not receive the feedback information, or even if the network device receives the feedback information of the terminal device and retransmits the service data, because the strength of the useful signal is small, the terminal device may not successfully decode the retransmitted service data even if the terminal device receives the retransmitted service data, and thus may not obtain a good transmission effect. When the SINR value is large (e.g., >20dB), it is said that the strength of the desired signal is relatively good, and in this case, the terminal device may transmit feedback information to the network device, possibly resulting in a good transmission effect. Similarly, the SINR threshold may be an empirical value, a statistical value of historical data, a typical value, or the like, and the SINR threshold may be within a range that enables the terminal device and the network device to communicate with each other more correctly.

It should be noted that, for different groups, thresholds of configured feedback decision parameters may be different or the same, and this is not limited in this application. In addition, the threshold of the feedback decision parameter in the present application may also be preconfigured or predefined by the terminal device. Or may be predefined by a protocol, which is not limited in this application. In addition, the network device selects which of the feedback decision parameters described above, and the network device may select the feedback decision parameter by itself, for example, the network device may select the feedback decision parameter randomly; or it may be a protocol pre-defined network device that selects which of the above feedback decision parameters. This is not limited in this application.

In case 3, the indication information may include a first type parameter and a second type parameter, and detailed descriptions of the first type parameter and the second type parameter may be referred to the descriptions in case 1 and case 2, respectively, and are not described herein again.

In case 4, the indication information may include a preset condition. Illustratively, the feedback is carried out when the current actual distance between the network device and the terminal device falls within a certain distance range, or when the distance between the network device and the terminal device is greater than a certain distance value; or when the distance between the network equipment and the terminal equipment is smaller than a certain distance value, feeding back; or feeding back when the current SINR corresponding to the first data is larger than a certain SINR value; or feeding back when the current RSRP corresponding to the first data is larger than the value of certain RSRP.

In case 5, the indication information may also include the first type parameter and the preset condition. For example, the first type of parameter represents feedback, and the preset condition is that the feedback is performed when the current actual distance between the network device and the terminal device falls within a certain distance range. For another example, the first type of parameter represents feedback, and the preset condition is that the feedback is performed when the current SINR corresponding to the first data is greater than a certain SINR value; for another example, the first type parameter represents feedback, and the preset condition is that the current RSRP corresponding to the first data is fed back when the current RSRP is greater than a certain RSRP value.

Or the indication information may also include parameters of the second type and preset conditions. For example, when the feedback decision parameter is a distance, and the second type parameter is a threshold of the feedback decision distance, the preset condition may be feedback when the feedback decision parameter is greater than the threshold of the feedback decision distance, or feedback when the feedback decision parameter is less than the threshold of the feedback decision distance, or feedback when the feedback decision parameter falls into the threshold of the feedback decision distance. For another example, when the feedback decision parameter is RSRP, the second type of parameter is a threshold of the feedback decision RSRP, and the preset condition may be that the feedback is greater than the threshold of the feedback decision RSRP. For another example, when the feedback decision parameter is SINR, the second type parameter is a threshold of feedback decision SINR, and the preset condition may be that feedback is performed when the preset condition is greater than the threshold of feedback decision SINR.

In case 6, the indication information may also include a first type parameter, a second type parameter, and a preset condition.

Exemplarily, the first type of parameter represents feedback, the feedback decision parameter is a distance, the second type of parameter represents a threshold of the feedback decision distance, and the feedback is performed when the preset condition is that the preset condition is greater than the threshold of the feedback decision parameter distance; or, the first parameter represents feedback, the feedback decision parameter is SINR, the second type parameter represents a threshold of feedback decision SINR, and the preset condition may be feedback when the preset condition is greater than the threshold of feedback decision SINR; or, the first type of parameter represents feedback, the feedback decision parameter is RSRP, the second parameter represents a threshold of the feedback decision RSRP, and the preset condition may be feedback when the preset condition is greater than the threshold of the feedback decision RSRP.

For the first type of parameters, the description of the above case 1 can be referred to, for the second type of parameters, the description of the above case 2 can be referred to, and for the third type of parameters, the description of the above case 3 can be referred to, which is not described herein again.

It should be noted that the indication information in which case the network device selects may be selected by the network device itself, for example, the network device may be selected randomly, or may also be selected according to the basis of grouping; alternatively, the indication information in which case is selected as above may be predefined by the protocol. This is not limited by the present application.

Step 302, the network device sends packet information to the terminal device. Accordingly, the terminal device receives packet information from the network device.

Here, the packet information is used to indicate a first identity included in one or more packets. The first identifier includes, but is not limited to, TMGI, G-RNTI, MCCH, or SC-MCCH as described above. The specific indication form of the packet information may be which first identifier is included in each packet, which is described by taking the first identifier as TMGI as an example, and the indication form of the packet information may be set to { TMGI-1, TMGI-2, TMGI-3}, and set #2 ═ TMGI-4, TMGI-5 }; or the indication form of the grouping information may be a form indicating which grouping each first identifier belongs to, and the indication form of the grouping information is not specifically limited in the present application, such as that TMGI-1 belongs to group #1, TMGI-2 belongs to group #1, TMGI-3 belongs to group #1, TMGI-4 belongs to group #2, and TMGI-5 belongs to group # 2.

Further, the grouping information may further include indication information corresponding to each group. That is, one packet corresponds to one indication information. The indication information may be explicitly indicated or may also be implicitly indicated. For a detailed description of the indication information, reference may be made to the description of the indication information, which is not described herein again.

In this application, the group information indicates the first identifier included in each group and the indication information corresponding to each group may be sent to the terminal device through one signaling, for example, the network device may send to the terminal device through an RRC signaling, where the RRC signaling includes the first identifier included in each group and the indication information corresponding to each group indicated by the group information. Alternatively, the group information may indicate the first identifier included in each group and the indication information corresponding to each group, and may be transmitted to the terminal device through two signaling. For example, the network device may also send to the terminal device through RRC signaling, where one RRC signaling includes the first identifier included in each group indicated by the group information, and another RRC signaling includes the indication information corresponding to each group, and the two RRC signaling do not affect each other. Further, when the two signaling messages are sent to the terminal device, the signaling messages may be sent to the terminal device twice, that is, one signaling message may be sent to the terminal device at a time, or both the two signaling messages may be sent to the terminal device at a time. It will be appreciated that the network device may send the packet information to the end devices in a multicast (also referred to as multicast) format, or may send the packet information to the end devices in a broadcast format.

In one possible implementation, the network device may send the packet information to the terminal device through higher layer signaling. For example, the packet information may be carried in higher layer signaling. Specifically, when the service is a Multimedia Broadcast Multicast Service (MBMS), each packet information may be carried in single cell point-to-multipoint (SC-PTM) configuration information. In this implementation, the higher layer signaling may also be referred to as configuration information.

In another possible implementation manner, the network device may also send the packet information to the terminal device through a system message. For example, the packet information may be carried in a system message. The system message may be a system information block (SIBx), such as SIB13 in MBMS or SIB20 in MBMS.

In yet another possible implementation manner, the network device may further dynamically notify the terminal device of the indication information corresponding to each group through Downlink Control Information (DCI).

Step 303, the network device sends the first data to the terminal device. Accordingly, the terminal device receives the first data from the network device.

Here, the first data may also be referred to as a transport block, service data, or user data, and the first data may be carried in a Physical Multicast Channel (PMCH) or a downlink shared physical channel (PDSCH). The network device may transmit the first data to the plurality of terminal devices in a broadcast manner, or may transmit the first data to the terminal devices in a multicast manner.

Step 304, the terminal device determines a first packet to which the first data belongs, and determines whether to send feedback information to the network device according to the indication information corresponding to the first packet. In one embodiment, the terminal device determines a first packet to which the first data belongs, and determines that feedback information needs to be sent to the network device according to indication information corresponding to the first packet.

Wherein the first packet is one of one or more packets.

In this application, the feedback information may be HARQ feedback information, and the HARQ feedback information includes an Acknowledgement (ACK) or a Negative Acknowledgement (NACK). Alternatively, the feedback information may be Channel State Information (CSI), and the CSI may include Channel Quality Information (CQI), Precoding Matrix Information (PMI), and Rank Information (RI). Alternatively, the feedback information may be HARQ feedback information and CSI. It should be noted that whether the feedback information is HARQ feedback information or CSI or HARQ feedback information and CSI may be specified and notified to the terminal device by the network device, may also be pre-agreed by the network device and the terminal device, or may also be default by the terminal device, or may also be predefined by a protocol, which is not limited in this application. In addition, what the feedback information the network device notifies the terminal device is may be transmitted to the terminal device together with the packet information or may be transmitted to the terminal device through a separate signaling.

In the present application, in conjunction with MBMS, the terminal device may determine the first packet to which the first data belongs in the following manner.

MBMS generally includes two transmission modes, Multimedia Broadcast Single Frequency Network (MBSFN) transmission and single cell point-to-multipoint (SC-PTM) transmission. The following describes the procedure of determining the first packet to which the first data belongs for each of the two transmission modes.

The MBSFN transmission scheme is also called a Single Frequency Network (SFN) transmission scheme. Refers to simultaneous transmission in multiple cells at the same time and on the same frequency. The MBSFN transmission mode can save frequency resources and improve the utilization rate of frequency spectrum. Meanwhile, the diversity effect brought by the multi-cell same-frequency transmission can solve the problems of blind area coverage and the like, and can enhance the reliability of receiving and improve the coverage rate. For the MBSFN transmission mode, the terminal device in this application refers to a terminal device in an MBSFN area. The MBSFN area refers to a group of cells in which MBSFN transmission is achieved through coordination, and the entire MBSFN area may be regarded as one MBSFN cell. It can also be understood that the group of cells implement MBSFN transmission by coordination, use the same air interface resources, and transmit the same MBMS. Or it can also be understood that several cells are configured in advance to form an MBSFN merging area, and multiple network devices in the merging area transmit the MBMS using the same radio resource, that is, send the same service data to all terminal devices in the merging area at the same time.

In the MBSFN transmission scheme, a mapping relationship between channels shown in fig. 4 may be combined to determine a first packet to which first data belongs. Since the MBMS has corresponding channels at both the MAC layer and the physical layer to transmit service data. The logical channels in the MAC layer mainly include a Multicast Control Channel (MCCH) and a Multicast Transport Channel (MTCH). The MCCH is used to transmit control information of the MBMS, and the MTCH is used to transmit service data of the MBMS, such as first data. The logical channels MCCH and MTCH are multiplexed onto a transport channel (MCH). For example, one MTCH and one MCCH may be multiplexed to one MCH media access control protocol data unit (MAC PDU), or only one MTCH may be carried in one MCH MAC PDU. MCH is mapped onto PMCH. After receiving the PMCH carrying the first data from the physical channel, referring to fig. 4, according to a mapping relationship between the PMCH and the MCH, the terminal device may determine the MCH corresponding to the PMCH carrying the first data, and then according to a mapping relationship between the MCH and the MCCH, may determine the MCCH corresponding to the first data.

SC-PTM transmission means that the MBMS broadcasts the first data to specific cells in which at least one terminal equipment must be interested in the broadcasted first data. That is, in the SC-PTM transmission, the terminal device refers to a terminal device interested in the broadcasted first data. The logical channels in the MAC layer mainly include an SC-MCCH and a single cell multicast traffic channel (SC-MTCH). Likewise, the SC-MCCH is used for transmitting control information of the MBMS, and the SC-MTCH is used for transmitting traffic data of the MBMS, such as first data. The logical channels SC-MCCH and SC-MTCH are mapped to a downlink shared channel (DL-SCH), and the DL-SCH is mapped to a PDSCH.

In the SC-PTM transmission mode, when the terminal device receives the PDSCH carrying the first data, referring to fig. 5, the DL-SCH corresponding to the PDSCH carrying the first data is determined according to the mapping relationship between the PDSCH and the DL-SCH, and then the SC-MCCH corresponding to the first data is determined according to the mapping relationship between the DL-SCH and the SC-MCCH. Further, when the terminal device is in an RRC connected state, the network device may configure a G-RNTI for the first data, and when the first identifier is the G-RNTI, the terminal device may determine the G-RNTI corresponding to the first data after receiving the first data, and since the scrambling code for scrambling the SC-MTCH is the G-RNTI, that is, one G-RNTI may identify one service, a packet to which the G-RNTI corresponding to the first data belongs may be determined as the first packet. Furthermore, if the first identifier is a TMGI, the SC-MCCH carries a mapping relationship between the G-RNTI and the TMGI, so that the G-RNTI corresponding to the first data can be determined, the TMGI corresponding to the G-RNTI corresponding to the first data is determined from the mapping relationship between the G-RNTI and the TMGI, and the packet in which the TMGI corresponding to the first data is located is determined as the first packet.

Based on the determined first group and in combination with the introduction of the indication information, a process of determining whether to send feedback information to the network device according to the indication information corresponding to the first group by the terminal device is described in detail below.

Based on the indication information introduced in the above scenario 1, that is, the indication information is a first type parameter, if the terminal device determines that the first type parameter corresponding to the first packet represents feedback, the terminal device sends feedback information to the network device; and if the terminal equipment determines that the first type parameter corresponding to the first grouping indicates no feedback, the terminal equipment does not send feedback information to the network equipment. Specifically, when the first type of parameter is a feedback switch, if the terminal device determines that the state of the feedback switch corresponding to the first packet is on, the terminal device sends feedback information to the network device; and if the terminal equipment determines that the state of the feedback switch corresponding to the first grouping is off, the terminal equipment does not send feedback information to the network equipment.

Based on the indication information introduced in the above case 2, the indication information is a second type of parameter, and the terminal device sends feedback information to the network device when determining that the value of the feedback decision parameter corresponding to the first data meets the threshold of the feedback decision parameter; or the terminal device does not send feedback information to the network device when determining that the value of the feedback decision parameter corresponding to the first data does not satisfy the threshold of the feedback decision parameter. As described below in conjunction with the different feedback decision parameters in case 2 above.

In example a, the feedback decision parameter is a distance, and the threshold of the feedback decision parameter may be referred to as a distance threshold, and for the convenience of understanding of the scheme, the threshold of the distance corresponding to the first packet is referred to as a first distance threshold. The threshold of the first distance may be a range, or may be a certain distance value (e.g., the first distance value or the second distance value), and the above description regarding the distance as the feedback decision parameter is combined, where the threshold of the first distance is taken as the distance range and the certain distance value, respectively, for example.

In one possible implementation, the threshold for the first distance is a distance range. The terminal equipment can determine the current actual distance between the terminal equipment and the network equipment according to the position information of the network equipment and the current position information of the terminal equipment, wherein the current actual distance is the value of the feedback judgment parameter corresponding to the first data; if the current actual distance determined by the terminal equipment is within the distance range, the terminal equipment sends feedback information to the network equipment; and if the current actual distance determined by the terminal equipment is not within the distance range, the terminal equipment does not send feedback information to the network equipment. For example, the threshold of the first distance is [100m-200m ], and if the current actual distance determined by the terminal device is 150m and 150m is within the range of [100m-200m ], the terminal device sends feedback information to the network device; if the terminal device determines that the current actual distance is 300m and 300m is not in the range of 100m-200m, the terminal device does not need to send feedback information to the network device.

In another possible implementation manner, the threshold of the first distance is a first distance value, and when the current actual distance is smaller than the first distance value, the terminal device sends feedback information to the network device. Similarly, the terminal device can determine the current actual distance between the terminal device and the network device according to the position information of the network device and the current position information of the terminal device, and if the current actual distance determined by the terminal device is smaller than the first distance value, the terminal device sends feedback information to the network device; if the current actual distance determined by the terminal equipment is greater than the first distance value, the terminal equipment does not need to send feedback information to the network equipment. For example, the first distance value is 200m, and if the current actual distance determined by the terminal device is 150m, and 150m is smaller than 200m, the terminal device sends feedback information to the network device; if the terminal device determines that the current actual distance is 300m, and 300m is greater than 200m, the terminal device does not need to send feedback information to the network device.

In yet another possible implementation manner, the threshold of the first distance is a second distance value, and when the current actual distance is greater than the second distance value, the terminal device sends the feedback information to the network device. Similarly, the terminal device may determine a current actual distance between the terminal device and the network device according to the position information of the network device and the current position information of the terminal device, and if the current actual distance determined by the terminal device is greater than the second distance value, the terminal device sends feedback information to the network device; and if the current actual distance determined by the terminal equipment is smaller than the second distance value, the terminal equipment does not need to send feedback information to the network equipment. For example, if the second distance value is 100m, and if the current actual distance determined by the terminal device is 150m, 150m is greater than 100m, the terminal device sends feedback information to the network device; if the terminal device determines that the current actual distance is 50m, and 50m is smaller than 200m, the terminal device does not need to send feedback information to the network device.

It should be noted that the terminal device determines that the current actual distance is fed back within the distance range, and the current actual distance is not fed back within the distance range, which may be the default of the terminal device; or the network device may notify the terminal device, for example, the network device notifies the terminal device in advance, or sends the indication information to the terminal device; or the terminal device and the network device may be agreed in advance, or the protocol may be predefined, which is not limited in this application. Similarly, the terminal device determines that the current actual distance is smaller than the first distance value feedback, or larger than the second distance feedback, which may be the default of the terminal device; or the network device notifies the terminal device, may notify in advance, or may send to the terminal device along with the indication information; or the terminal device and the network device may be agreed in advance, or the protocol may be predefined, which is not limited in this application.

In addition, the network device may carry the location information of the network device in the first data; or the network device may send its own location information to the terminal device in advance, for example, after the network device establishes a connection with the terminal device, the network device notifies the terminal device of the location information of the network device; or the terminal device sends a request for acquiring the location information of the network device to the network device when determining that the location information of the network device needs to be acquired, and the network device sends a response to the terminal device, wherein the response includes the location information of the network device. In addition, the terminal equipment can determine the current position of the terminal equipment through a gyroscope, a sensor and the like in the terminal equipment.

Example B, the feedback decision parameter is RSRP, and a threshold of the feedback decision parameter may be referred to as a threshold of RSRP, and a threshold of RSRP corresponding to the first packet may be referred to as a threshold of the first RSRP.

In a possible implementation manner, before receiving the first data, the terminal device may measure a current channel according to a measurement signal (also referred to as a reference signal) to obtain a current RSRP value, where the current RSRP value is a value of a feedback decision parameter corresponding to the first data, and the current RSRP value may reflect a state of the current channel. After the end device receives the first data, if the terminal device determines that the value of the current RSRP is smaller than the threshold of the first RSRP, the terminal device does not send feedback information to the network device; and if the terminal equipment determines that the current RSRP value is greater than or equal to the threshold of the first RSRP, the terminal equipment sends feedback information to the network equipment. For example, if the threshold of the first RSRP is-80 dB, and the terminal device determines that the current RSRP value is-76 dB, the terminal device sends feedback information to the network device; when the terminal equipment determines that the current RSRP value is-106 dB, the terminal equipment does not need to send feedback information to the network equipment. It should be noted that the terminal device determines that the current RSRP value is less than the threshold of the first RSRP and does not feedback, and the threshold feedback that is greater than the first RSRP may be default of the terminal device, may be notified to the terminal device in advance by the network device, or may be predefined by a protocol, which is not limited in this application.

In example C, the feedback decision parameter is SINR, where the threshold of the feedback decision parameter may be referred to as a threshold of SINR, and the threshold of SINR corresponding to the first packet may be referred to as a threshold of the first SINR.

In a possible implementation manner, after receiving the first data, the terminal device may determine a current SINR value according to the first data, that is, the terminal device determines a ratio of power of the first data to interference noise power as the current SINR value, where the current SINR value is a value of a feedback decision parameter corresponding to the first data. If the terminal equipment determines that the current SINR value is smaller than the threshold of the first SINR, the terminal equipment does not send feedback information to the network equipment; and if the terminal equipment determines that the current SINR value is greater than or equal to the threshold of the first SINR, the terminal equipment sends feedback information to the network equipment. For example, the threshold of the first SINR is 0.8, and when the terminal device determines that the current SINR value is 0.9, the terminal device sends feedback information to the network device. When the terminal device determines that the current SINR value is 0.5, the terminal device does not need to send feedback information to the network device. It should be noted that the terminal device determines that the current SINR value is less than the threshold of the first SINR and does not perform feedback, and the threshold feedback greater than the first SINR may be default of the terminal device, may be notified by the network device in advance to the terminal device, or may be predefined in a protocol, which is not limited in this application.

Example D, the feedback decision parameter is a distance and an RSRP, where the threshold of the feedback decision parameter is a combination of a threshold of the distance and a threshold of the RSRP, and similarly, the threshold of the feedback decision parameter corresponding to the first packet may be referred to as a combination of a threshold of the first distance and a threshold of the first RSRP. After the terminal equipment receives the first data, if the current actual distance between the terminal equipment and the network equipment meets the threshold of the first distance and the value of the current RSRP parameter meets the threshold of the first RSRP, the terminal equipment sends feedback information to the network equipment; otherwise, the feedback information is not sent to the network device, and the specific determination process may refer to example a and example B, which is not described herein again.

It should be noted that the terminal device may determine whether the current actual distance meets the threshold of the first distance, and when the current actual distance meets the threshold of the first distance, determine whether the value of the current RSRP meets the threshold of the first RSRP. Or when the current RSRP value is determined to meet the threshold of the first RSRP, determining whether the current actual distance meets the threshold of the first distance, or simultaneously determining whether the current RSRP value of the terminal equipment meets the threshold of the first RSRP and whether the current actual distance meets the threshold of the first distance. If the threshold of the feedback decision parameter is a combination of two or more, the terminal device may randomly select which decision is performed first, or may predetermine a decision order, or may indicate the decision order to the terminal device by the network device, or may determine the decision order by the terminal device according to a certain factor, which is not limited in the present application.

In the present application, the feedback decision parameter may also be a combination of a distance and an SINR, and correspondingly, the threshold of the feedback decision parameter is a combination of a distance threshold and an SINR threshold; or the feedback judgment parameter can be a combination of RSRP and SINR, and correspondingly, the threshold of the feedback judgment parameter is a combination of RSRP threshold and SINR threshold; or the feedback decision parameter may be a combination of distance, RSRP and SINR, and accordingly, the threshold of the feedback decision parameter is a combination of a distance threshold, an RSRP threshold and an SINR threshold. In addition, for various combinations, the sequence of terminal device decision may refer to the description of the above example D, and is not described herein again.

The indication information, i.e. the indication information, described based on the above case 3 is the first type parameter and the second type parameter. When the terminal equipment determines that the first type parameter corresponding to the first group to which the first data belongs represents feedback and the value of the feedback judgment parameter corresponding to the first data meets the threshold of the feedback judgment parameter, the terminal equipment sends feedback information to the network equipment; or the terminal equipment does not need to send feedback information to the network equipment when the first type of parameter corresponding to the first grouping represents feedback and the value of the feedback judgment parameter corresponding to the first data does not meet the threshold of the feedback judgment parameter; or when the terminal equipment determines that the first type parameter corresponding to the first grouping represents no feedback and the value of the feedback judgment parameter corresponding to the first data meets the threshold of the feedback judgment parameter, the terminal equipment does not need to send feedback information to the network equipment; or when the terminal equipment determines that the first type parameter corresponding to the first grouping represents no feedback and the value of the feedback judgment parameter corresponding to the first data does not meet the threshold of the feedback judgment parameter, the terminal equipment does not need to send feedback information to the network equipment; or the terminal device determines that the first type of feedback parameter corresponding to the first packet indicates no feedback, and may not determine the value of the second type of parameter any more. For the determination process based on the case 1, the determination process that the first type of parameter corresponding to the first group represents feedback may be referred to the above description based on the case 2 (for example, example a, example B, and example C), and details thereof are omitted here. It should be noted that the terminal device may determine the first type of parameter first, and then determine the second type of parameter when determining that the first type of parameter represents feedback; or the second type of parameter may be determined first, and the first type of parameter is determined after the second type of parameter is determined to represent feedback.

The indication information introduced based on the above case 4, i.e., the indication information, is a preset condition. If the preset condition is that the current actual distance between the network equipment and the terminal equipment is fed back when the distance falls within a certain distance range, the terminal equipment can determine the current actual distance between the terminal equipment and the network equipment according to the position information of the network equipment and the current position information of the terminal equipment after receiving the first data, and if the current actual distance determined by the terminal equipment is within the distance range in the preset condition, the terminal equipment sends feedback information to the network equipment; otherwise, the terminal device does not need to send feedback information to the network device.

Or the preset condition is that the current SINR corresponding to the first data is greater than a value of a certain SINR, the terminal device determines the current SINR corresponding to the first data after receiving the first data, and if the current SINR corresponding to the first data determined by the terminal device is greater than the value of the certain SINR in the preset condition, the terminal device sends feedback information to the network device; otherwise, the terminal device does not need to send feedback information to the network device.

Or when the preset condition is that the current RSRP corresponding to the first data is greater than the value of certain RSRP, the terminal device can determine the current RSRP corresponding to the first data after receiving the first data, and if the current RSRP corresponding to the first data determined by the terminal device is greater than the value of certain RSRP in the preset condition, the terminal device sends feedback information to the network device; otherwise, the terminal device does not need to send feedback information to the network device.

Based on the above case 5, the indication information includes the first kind of parameters and the preset condition. Taking a preset condition as an example that feedback is given when the current actual distance between the network device and the terminal device falls within a certain distance range, the terminal device determines that the first type of parameter corresponding to the first group of the received first data represents feedback, and further determines whether the current actual distance between the terminal device and the network device falls within the distance range, and if so, feedback is given; if not, no feedback is required. Taking the preset condition as an example that the feedback is performed when the current SINR corresponding to the first data is greater than a value of a certain SINR, the terminal device determines whether the current SINR corresponding to the received first data is greater than the value of the certain SINR in the preset condition when determining that the first type parameter corresponding to the first packet of the received first data represents the feedback, and further determines whether the current SINR corresponding to the received first data is greater than the value of the certain SINR in the preset condition; if not, no feedback is required. Taking the preset condition as an example that the feedback is performed when the current RSRP corresponding to the first data is greater than a value of a certain RSRP, the terminal device determines whether the current RSRP corresponding to the received first data is greater than the value of the certain RSRP in the preset condition after determining that the first type parameter corresponding to the first packet of the received first data represents the feedback, and further determines whether the current RSRP corresponding to the received first data is greater than the value of the certain RSRP in the preset condition; if not, no feedback is required.

Based on the indication information of the above situation 6, if the indication information is that the first type parameter represents feedback, the second type parameter represents a threshold of a feedback decision distance, and the preset condition is that feedback is performed when the indication information is greater than the threshold of the feedback decision parameter distance, after the terminal device receives the first data, the terminal device determines that the first type parameter corresponding to the first packet of the received first data represents feedback, and determines that the current actual distance between the network device and the terminal device is greater than the threshold of the feedback decision parameter distance, and the terminal device sends feedback information to the network device. For determining the current actual distance, reference may be made to the description of example a above, and details are not described here. Or, the indication information is that the first parameter represents feedback, the second type parameter represents a threshold of feedback decision SINR, and the feedback is performed when the preset condition is that the preset condition is greater than the threshold of feedback decision SINR, after the terminal device receives the first data, the terminal device determines that the first type parameter corresponding to the first group of the received first data represents feedback, and when it is determined that the current SINR corresponding to the first data is greater than the threshold of feedback decision SINR, the terminal device sends feedback information to the network device. Or the indication information is that the first type parameter represents feedback, the second parameter represents a threshold of feedback decision RSRP, and the preset condition may be that the feedback is performed when the preset condition is greater than the threshold of feedback decision RSRP, and then after the terminal device receives the first data, the terminal device determines that the first type parameter corresponding to the first packet of the received first data represents feedback, and determines that the current RSRP corresponding to the first data is greater than the threshold of feedback decision RSRP, then the terminal device sends the feedback information to the network device.

In order to further reduce the feedback overhead of the system, the terminal device may send the feedback information to the network device when determining that the feedback information needs to be sent to the network device and determining that the feedback information satisfies the feedback condition, where the feedback condition is that the first data is not correctly analyzed. That is, the terminal device may send the feedback information to the network device when determining that the feedback information needs to be sent to the network device and determining that the feedback information is NACK; if the terminal device determines that the feedback information needs to be sent to the network device but the feedback information is ACK, the terminal device does not need to send the feedback information to the network device. Thus, the network device does not need to know the transmission condition of each first data, for example, when the network device broadcasts the first data, the first data is sent to a plurality of terminal devices, and at this time, the network device only needs to know which first data in the service having the specific service characteristic or belonging to the specific type are not correctly analyzed by the terminal devices, so that the network device retransmits the first data. For non-feedback, the network device may assume that the first data has been correctly received by the terminal device. Therefore, the number of ACK/NACK control information sent to the network equipment by the terminal equipment can be reduced, and the method is favorable for reducing the overhead and the loss of the system on the premise of ensuring effective feedback, thereby realizing more efficient feedback. It should be understood that the incorrect parsing of the first data includes, but is not limited to, a demodulation decoding failure of the first data.

In this application, a network device may configure a common resource for each group, and when determining that feedback information needs to be sent to the network device, a terminal device may send the feedback information on a group common resource corresponding to the group, where the group common resource means that terminal devices in one cell may be divided into multiple groups, each group has a corresponding group common resource, the terminal devices in a group may use the group common resource of the group, and the terminal devices in other groups may not use the group common resource. Alternatively, the network device may allocate a specific resource for sending the feedback information to each terminal device on a common resource, where the common resource refers to a resource that can be used by all terminal devices in the same cell.

In the application, after the network device receives the feedback information from the terminal device, if the received information is determined to be ACK, the terminal device successfully receives the first data, and the network device can continue to transmit the subsequent service data; if the NACK is determined to be received, it indicates that the terminal device has not successfully received the first data, and the network device may retransmit the first data.

As can be seen from steps 301 to 303, by grouping a plurality of services and configuring indication information for each group, it can be achieved that some packets need to send feedback information to the network device, that is, the feedback mechanism is turned on, and some services do not need to send feedback information to the network device, that is, the feedback mechanism is not turned on (or turned off). After the terminal device receives the first data in the packet belonging to the unopened feedback mechanism, no matter whether the first data is correctly analyzed or not, no feedback information needs to be sent to the network device, so that the feedback overhead of the communication system is reduced (the control information except the useful data is called the overhead), and the complexity of the system can also be reduced. Furthermore, a service with high requirement on service transmission reliability can be set into a packet, and a feedback mechanism is configured for the packet, so that the requirement on high reliability of transmission of service data in the packet can be ensured.

Based on the above and the same idea, the present application provides a communication apparatus for executing any one of the schemes on the terminal device side in the above method flow. Fig. 6 schematically illustrates a structure of a communication apparatus provided in the present application. For example, the communication apparatus in this example may be the terminal device 600, and may execute the scheme correspondingly executed by the terminal device in fig. 3. The terminal device 600 may be the terminal device 102 in fig. 1 described above, or may be the terminal device 201 in fig. 2 described above. As shown in fig. 6, the terminal apparatus 600 includes:

the transceiving unit 602 is configured to receive packet information from a network device and receive first data from the network device. The grouping information indicates a first identifier included in one or more groups, and the grouping information further includes indication information corresponding to each group.

The processing unit 601 is configured to determine a first packet to which the first data belongs, and determine whether to send feedback information to the network device according to indication information corresponding to the first packet, where the first packet is one of one or more packets.

In one possible implementation, the indication information includes, but is not limited to, any one of the following three scenarios.

In case 2, the indication information includes a second type of parameter, where the second type of parameter is used to represent a threshold of the feedback decision parameter, and the processing unit 601 is configured to: when the value of the feedback judgment parameter corresponding to the first data is determined to meet the threshold of the feedback judgment parameter, sending feedback information to the network equipment; or, the processing unit 601 does not send feedback information to the network device when determining that the value of the feedback decision parameter corresponding to the first data does not satisfy the threshold of the feedback decision parameter.

In case 3, the indication information includes a first type of parameter and a second type of parameter, where the first type of parameter and the second type of parameter can be referred to the descriptions in case 1 and case 2, and are not described herein again.

When the indication information is the above case 3, the indication information corresponding to the first packet may include a first type parameter and a second type parameter, and the processing unit 601 is further configured to: and when the first class parameter corresponding to the first group to which the first data belongs is determined to represent feedback and the value of the feedback judgment parameter corresponding to the first data meets the threshold of the feedback judgment parameter, sending feedback information to the network equipment.

In one possible implementation, the feedback decision parameter includes any one or a combination of any more of the following: distance, Reference Signal Receiving Power (RSRP), signal to interference plus noise ratio (SINR). That is, the feedback decision parameter may be a distance, or RSRP, or SINR, or a distance and RSRP, or a distance and SINR, or RSRP and SINR, or a distance, RSRP and SINR.

The processing unit 601 is further configured to determine that feedback information needs to be sent to the network device, and send the feedback information to the network device when it is determined that the feedback information meets the feedback condition; wherein, the feedback condition is as follows: the first data is not properly parsed.

It should be understood that the processing unit 601 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver unit 602 may be implemented by a transceiver or a transceiver-related circuit component.

The embodiment of the application also provides a communication device, and the communication device can be terminal equipment or a circuit. The communication apparatus may be used to perform the actions performed by the terminal device in the method embodiment shown in fig. 3 described above.

Based on the above and the same concept, the present application provides a communication apparatus for executing any one of the schemes on the network device side in the above method flow. Fig. 7 schematically illustrates a structure of a communication apparatus provided in the present application. The communication device in this example may be a network device 700, which may execute the scheme correspondingly executed by the network device in fig. 3. The network device 700 may also be the network device 101 in fig. 1, or may also be the network device 202, the network device 203, and the network device 204 in fig. 2. As shown in fig. 7, the network device 700 includes:

a processing unit 701, configured to configure indication information for each packet.

A transceiving unit 702, configured to send packet information to a terminal device, where the packet information indicates a first identifier included in one or more packets, and the packet information further includes indication information corresponding to each packet.

In a possible implementation manner, the processing unit 701 is further configured to group a plurality of services.

The processing unit 701 is specifically configured to group multiple services according to service characteristics and/or service types of the multiple services. That is, the network device may group a plurality of services according to the service characteristics, may group a plurality of services according to the service types, or may group a plurality of services according to the service types and the service characteristics. Optionally, the service characteristics include any one or a combination of any more of service reliability requirements, service coverage capability, service delay requirements, service data volume, service mobility requirements, and service priority; the traffic type includes any one of eMBB, URLLC, mMTC, V2X, IoT.

In one possible implementation, the first identifier is TMGI, G-RNTI, MCCH, or SC-MCCH.

In this application, the indication information may include a first type of parameter, or the indication information includes a second type of parameter, or the indication information includes the first type of parameter and the second type of parameter. Wherein the first type of parameter is used for representing feedback or no feedback; the second type of parameter is used to represent a threshold of the feedback decision parameter, and the threshold of the feedback decision parameter is used to: the terminal equipment sends feedback information to the network equipment when determining that the value of the feedback judgment parameter corresponding to the first data meets the threshold of the feedback judgment parameter; or when the value of the feedback judgment parameter corresponding to the first data is determined not to meet the threshold of the feedback judgment parameter, not sending the feedback information to the network equipment.

A transceiving unit 702, specifically configured to send packet information to a terminal device through a higher layer signaling; or, the grouping information is sent to the terminal device through the system message.

It should be understood that the processing unit 1010 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver unit 1020 may be implemented by a transceiver or a transceiver-related circuit component.

When the communication device is a terminal device, fig. 8 shows a simplified structural diagram of the terminal device. For easy understanding and illustration, in fig. 8, the terminal device is exemplified by a mobile phone. As in fig. 8, terminal device 800 includes a processor, memory, control circuitry, and an antenna. The processor is mainly configured to process the communication protocol and the communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device 800 to execute the method executed by the terminal device 800 in any of the above embodiments. The memory is used primarily for storing software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device 800, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

For ease of illustration, fig. 8 shows only one memory and processor. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in this application.

As an alternative implementation manner, the processor may include a baseband processor and a central processing unit, the baseband processor is mainly used for processing the communication protocol and the communication data, and the central processing unit is mainly used for controlling the whole terminal device 800, executing the software program, and processing the data of the software program. The processor in fig. 8 integrates functions of the baseband processor and the central processing unit, and it should be noted that the baseband processor and the central processing unit may also be independent processors, and are interconnected through technologies such as a bus. It should be noted that the terminal device may include a plurality of baseband processors to adapt to different network systems, the terminal device 800 may include a plurality of central processing units to enhance its processing capability, and various components of the terminal device 800 may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In the present application, the antenna and the control circuit having the transmitting and receiving functions may be regarded as a transmitting and receiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device. As shown in fig. 8, the terminal device includes a transceiving unit 802 and a processing unit 801. The transceiver unit may also be referred to as a transceiver, transceiving means, etc., and the processing unit may also be referred to as a processor, processing board, processing unit, processing means, etc. Alternatively, a device for implementing a receiving function in the transceiving unit may be regarded as a receiving unit, and a device for implementing a sending function in the transceiving unit may be regarded as a sending unit, that is, the transceiving unit includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

Downlink signals (including data and/or control information) transmitted by the network equipment are received on the downlink through the antenna, uplink signals (including data and/or control information) are transmitted to the network equipment or other terminal equipment through the antenna on the uplink, and traffic data and signaling messages are processed in the processor according to the radio access technology (e.g., the access technology of LTE, NR, and other evolved systems) adopted by the radio access network. The processor is further configured to control and manage the actions of the terminal device, and is configured to perform the processing performed by the terminal device in the foregoing embodiment. The processor is also configured to enable the terminal device to perform the method of fig. 8 that relates to the terminal device.

It will be appreciated that fig. 8 only shows a simplified design of the terminal device. In practical applications, the terminal device may include any number of antennas, memories, processors, etc., and all terminal devices that can implement the present application are within the scope of the present application.

It should be understood that the transceiver unit 802 is configured to perform the transmitting operation and the receiving operation on the terminal device side in the method embodiment shown in fig. 3, and the processing unit 801 is configured to perform other operations besides the transceiving operation on the terminal device side in the method embodiment shown in fig. 3.

For example, the transceiving unit 802 is configured to perform transceiving steps on the terminal device side in the embodiment shown in fig. 3, such as step 302 and step 303. A processing unit 801, configured to perform other operations besides the transceiving operation, such as step 304, on the terminal device side in the embodiment shown in fig. 3.

When the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input/output circuit and a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.

When the communication apparatus is a network device, fig. 9 exemplarily shows a schematic structural diagram of a network device provided in the present application, and as shown in fig. 9, the network device 900 includes one or more Remote Radio Units (RRUs) 901 and one or more baseband units (BBUs) 902. The RRU901 may be referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc., which may include at least one antenna 9011 and a radio frequency unit 9012. The RRU901 is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals. The BBU902 portion may be referred to as a processing unit, a processor, etc., and is mainly used for performing baseband processing, such as channel coding, multiplexing, modulation, spreading, etc., and also for controlling network devices, etc. RRU901 and BBU902 may be physically located together; or may be physically separated, i.e., distributed network devices.

In an example, the BBU902 may be formed by one or more boards, and the boards may collectively support a radio access network (e.g., an LTE network) of a single access system, or may respectively support radio access networks of different access systems. The BBU902 also includes a memory 9022 and a processor 9021. The memory 9022 is used to store necessary instructions and data. The processor 9021 is configured to control the network device to perform necessary actions, for example, to control the network device to execute the method performed by the network device in any of the embodiments described above. Memory 9022 and processor 9021 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Or multiple boards may share the same memory and processor. In addition, each single board is provided with necessary circuits.

Uplink signals (including data and the like) transmitted by the communication device are received on the uplink through the antenna 9011, downlink signals (including data and/or control information) are transmitted to the communication device on the downlink through the antenna 9011, and traffic data and signaling messages are processed in the processor 9021 according to radio access technologies adopted by the radio access network (e.g., access technologies of LTE, NR, and other evolved systems). The processor 9021 is further configured to control and manage an action of the network device, and is configured to execute the processing performed by the network device in the foregoing embodiment. Processor 9021 is also configured to support a network device in performing the method performed by the network device of fig. 3.

It will be appreciated that fig. 9 only shows a simplified design of the network device. In practical applications, the network device may include any number of antennas, memories, processors, radio frequency units, RRUs, BBUs, etc., and all network devices that can implement the present application are within the protection scope of the present application.

In this embodiment of the application, taking RRU901 as an example of a transceiver and BBU902 as an example of a processor, processor 9021 in network device 900 may be configured to read a computer instruction in memory 9022 to execute configuration indication information for each packet, where the packet includes a first identifier. The transceiver is used for sending grouping information to the terminal equipment, the grouping information indicates the first identification included by one or more groups, and the grouping information also includes indication information corresponding to each group.

Processor 9021 may also implement any detailed function of the network device in the method embodiment shown in fig. 3, which is not described in detail herein, and reference may be made to the processing step executed by the network device in the method embodiment shown in fig. 3. In one embodiment, the processor may separately implement the methods in the above embodiments, wherein the transceiver unit or the specific transceiver may also be one or more pins of the input and output of the processor.

It should be understood that the processor referred to in the embodiments of the present application may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile 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. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, the memory (storage unit) is integrated in the processor.

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Based on the foregoing and similar concepts, the present application provides a communication system. The communication system may include one or more of the aforementioned terminal devices, and one or more network devices. The terminal device can execute any method on the terminal device side, and the network device can execute any method on the network device side. The possible implementation manners of the network device and the terminal device can be referred to the above description, and are not described herein again.

It should be noted that the terms "first", "second", and the like in the description and claims of the embodiments of the present application and in the drawings described above are used for distinguishing similar objects and not necessarily for describing a particular order or sequence. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a list of steps or elements. A method, system, article, or apparatus is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, system, article, or apparatus.

It is to be understood that, in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware or any combination thereof, and when the implementation is realized by a software program, all or part of the implementation may be realized in the form of a computer program product. The computer program product includes one or more instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The instructions may be stored in or transmitted from one computer storage medium to another, for example, instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. A computer storage medium may be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more available media. The usable medium may be a magnetic medium (e.g., a flexible Disk, a hard Disk, a magnetic tape, a magneto-optical Disk (MO), etc.), an optical medium (e.g., a CD, a DVD, a BD, an HVD, etc.), or a semiconductor medium (e.g., a ROM, an EPROM, an EEPROM, a nonvolatile memory (NAND FLASH), a Solid State Disk (SSD)), etc.

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

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

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

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

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

Claims

1. A method of communication, comprising:

receiving grouping information from a network device, wherein the grouping information indicates a first identifier included in one or more groups, and the grouping information further includes indication information corresponding to each group;

receiving first data from the network device;

and determining a first packet to which the first data belongs, and determining whether feedback information needs to be sent to network equipment according to indication information corresponding to the first packet, wherein the first packet is one of the one or more packets.

2. The method of claim 1, wherein the indication information comprises a first type of parameter and/or a second type of parameter;

the first type of parameter is used for representing feedback or no feedback;

the second type of parameter is used to represent a threshold of a feedback decision parameter, where the threshold of the feedback decision parameter is used to: when the value of the feedback judgment parameter corresponding to the first data is determined to meet the threshold of the feedback judgment parameter, sending the feedback information to the network equipment; or, when it is determined that the value of the feedback decision parameter corresponding to the first data does not satisfy the threshold of the feedback decision parameter, no feedback information is sent to the network device.

3. The method of claim 2, wherein the feedback decision parameter comprises any one or a combination of any more of:

distance, reference signal received power, RSRP, signal to interference plus noise ratio, SINR.

4. The method according to claim 2 or 3, wherein the indication information corresponding to the first packet comprises the first class parameter and the second class parameter;

the method further comprises the following steps:

and when determining that the first class parameter corresponding to the first group to which the first data belongs represents feedback and the value of the feedback judgment parameter corresponding to the first data meets the threshold of the feedback judgment parameter, sending the feedback information to the network equipment.

5. The method according to any of claims 1 to 4, wherein the first identity is a temporary mobile group identity, TMGI, a group radio network temporary identity, G-RNTI, a multicast control channel, MCCH, or a single cell multicast control signal, SC-MCCH.

6. The method of any of claims 1 to 5, further comprising:

determining that the feedback information needs to be sent to the network equipment, and sending the feedback information to the network equipment when the feedback information is determined to meet a feedback condition;

wherein the feedback condition is: the first data is not properly parsed.

7. A method of communication, comprising:

configuring indication information for each group;

and sending grouping information to a terminal device, wherein the grouping information indicates a first identifier included in one or more groups, and the grouping information also includes indication information corresponding to each group.

8. The method of claim 7, wherein the indication information comprises a first type of parameter and/or a second type of parameter;

the first type of parameter is used for representing feedback or no feedback;

the second type of parameter is used to represent a threshold of a feedback decision parameter, where the threshold of the feedback decision parameter is used to: the terminal equipment sends the feedback information when determining that the value of the feedback judgment parameter corresponding to the first data meets the threshold of the feedback judgment parameter; or when the value of the feedback judgment parameter corresponding to the first data is determined not to meet the threshold of the feedback judgment parameter, not sending feedback information.

9. The method of claim 8, wherein the feedback decision parameter comprises any one or a combination of any more of:

10. The method according to any of claims 7 to 9, wherein the first identity is a temporary mobile group identity, TMGI, a group radio network temporary identity, G-RNTI, a multicast control channel, MCCH, or a single cell multicast control signal, SC-MCCH.

11. The method of any of claims 7 to 10, further comprising:

a plurality of services are grouped.

12. A method according to any one of claims 7 to 11, characterized in that the method comprises:

grouping a plurality of services according to service characteristics and/or service types of the services;

the traffic characteristics include any one or a combination of any of the following:

service reliability requirements, service coverage capability, service delay requirements, service data volume, service mobility requirements and service priority;

the service type comprises any one of the following:

the system comprises an enhanced mobile broadband eMBB, a high-reliability low-delay communication URLLC, a mass machine type communication mMTC, an Internet of vehicles V2X and an Internet of things IoT.

13. The method of any of claims 7 to 12, further comprising:

sending the grouping information to the terminal equipment through a high-level signaling; or,

and sending the grouping information to the terminal equipment through a system message.

14. A communications device, comprising a transceiver and a processor:

the transceiver is used for receiving grouping information from a network device and receiving first data from the network device, wherein the grouping information indicates a first identifier included in one or more groups, and the grouping information further includes indication information corresponding to each group;

the processor is configured to determine a first packet to which the first data belongs, and determine whether to send feedback information to a network device according to indication information corresponding to the first packet, where the first packet is one of the one or more packets.

15. The communication apparatus according to claim 14, wherein the indication information comprises a first type of parameter and/or a second type of parameter;

the first type of parameter is used for representing feedback or no feedback;

the second type of parameter is used to represent a threshold of a feedback decision parameter, where the threshold of the feedback decision parameter is used to: the terminal device sends the feedback information to the network device when determining that the value of the feedback judgment parameter corresponding to the first data meets the threshold of the feedback judgment parameter; or, when it is determined that the value of the feedback decision parameter corresponding to the first data does not satisfy the threshold of the feedback decision parameter, no feedback information is sent to the network device.

16. The communications apparatus of claim 15, wherein the feedback decision parameter comprises any one or a combination of any more of:

17. The communication apparatus according to claim 15 or 16, wherein the indication information corresponding to the first packet includes the first class parameter and the second class parameter;

the processor is specifically configured to:

18. The communications apparatus of any of claims 14 to 17, wherein the first identity is a temporary mobile group identity, TMGI, a group radio network temporary identity, G-RNTI, a multicast control channel, MCCH, or a single cell multicast control signal, SC-MCCH.

19. The communications apparatus of any of claims 14 to 18, the processor further configured to:

determining that the feedback information needs to be sent to the network equipment, and sending the feedback information to the network equipment when the feedback information is determined to meet a feedback condition; wherein the feedback condition is: the first data is not properly parsed.

20. A communications apparatus, comprising a processor and a transceiver:

the processor is used for configuring indication information for each group;

the transceiver is configured to send packet information to a terminal device, where the packet information indicates a first identifier included in one or more packets, and the packet information further includes indication information corresponding to each packet.

21. The communication apparatus according to claim 20, wherein the indication information comprises a first type of parameter and/or a second type of parameter;

the first type of parameter is used for representing feedback or no feedback;

22. The communications apparatus of claim 21, wherein the feedback decision parameter comprises any one or a combination of any more of:

23. The communications apparatus of any of claims 20 to 22, wherein the first identity is a temporary mobile group identity, TMGI, a group radio network temporary identity, G-RNTI, a multicast control channel, MCCH, or a single cell multicast control signal, SC-MCCH.

24. The communications apparatus of any of claims 20-23, the processor further configured to: a plurality of services are grouped.

25. The communications apparatus of any of claims 20-24, the processor further configured to:

grouping the plurality of services according to the service characteristics and/or the service types of the plurality of services;

the service type comprises any one of the following:

26. A communication device as claimed in any of claims 20 to 25, wherein the transceiver is configured to:

sending the grouping information to the terminal equipment through a high-level signaling; or sending the grouping information to the terminal equipment through a system message.

27. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 13.