Feedback method and device, terminal, network equipment and storage medium

Abstract

The invention discloses a feedback method and device, a terminal, network equipment and a storage medium, and the method comprises the steps that the terminal receives first information sent by a network side; wherein the first information is used for indicating whether the terminal needs to carry terminal information in feedback information sent by using a first feedback resource; the terminal information comprises at least one of the following information: information representing a terminal type; characterizing the information of the terminal in the designated area; characterizing that the terminal receives information for setting bearing data; and representing that the terminal receives the information of the set service data.

Description

Technical Field

[0001] The present application relates to the field of wireless technology, and in particular to a feedback method, apparatus, terminal, network equipment and storage medium. Background Art

[0002] A micro-domain network is composed of an access control node (AP) and a large number of terminals, which need to work closely together to achieve a certain function. In the related art, in a micro-domain communication scenario, the network side determines whether to retransmit data based on the feedback from the terminal, which may result in excessive transmission overhead. Summary of the invention

[0003] To solve related technical problems, the embodiments of the present application provide a feedback method, apparatus, terminal, network device and storage medium.

[0004] The technical solution of the embodiment of the present application is implemented as follows:

[0005] The embodiment of the present application provides a feedback method, which is applied to a terminal, including:

[0006] Receive the first information sent by the network side; wherein,

[0007] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0008] Information representing the terminal type;

[0009] Information indicating that the terminal is located in a specified area;

[0010] Information indicating that the terminal receives and sets bearer data;

[0011] Information indicating that the terminal receives set service data.

[0012] Among them, in the above scheme, the second information sent by the network side is received; wherein,

[0013] The second information is used to indicate the transmission resources of the first physical downlink shared channel (PDSCH, Physical Downlink Shared Channel) and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0014] In the above solution, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or,

[0015] When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

[0016] In the above scheme, when the first PDSCH corresponds to a first feedback resource, the terminal uses a feedback mode of only hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat reQuest) negative feedback (HARQ-NACKonly) to feedback the reception status of the first PDSCH; and / or,

[0017] In the case that the first PDSCH corresponds to at least two first feedback resources, the terminal uses a HARQ positive feedback or negative feedback (HARQ-ACK / NACK) feedback mode or a HARQ-NACK only feedback mode to feed back the reception status of the first PDSCH.

[0018] In the above scheme, the method further comprises:

[0019] Receive the third information sent by the network side; wherein,

[0020] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0021] In the above scheme, the method further comprises:

[0022] Receive the fourth information sent by the network side; wherein,

[0023] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0024] The embodiment of the present application also provides a feedback method, which is applied to a network device, including:

[0025] Sending first information to a terminal; wherein,

[0026] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0027] Information representing the terminal type;

[0028] Information indicating that the terminal is located in a specified area;

[0029] Information indicating that the terminal receives and sets bearer data;

[0030] Information indicating that the terminal receives set service data.

[0031] Wherein, in the above scheme, the method further comprises:

[0032] Sending second information to the terminal; wherein,

[0033] The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0034] In the above solution, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or,

[0035] When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

[0036] In the above scheme, the method further comprises:

[0037] Sending third information to the terminal; wherein,

[0038] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0039] In the above scheme, the method further comprises:

[0040] When the network side uses unicast mode to transmit data and the feedback information sent by the terminal includes NACK, determining whether to retransmit the data based on the terminal information carried in the feedback information; and / or,

[0041] When the network side uses a groupcast mode or a multicast mode to transmit data and the feedback information sent by the terminal includes NACK, whether to retransmit the data is determined based on the terminal information carried in the feedback information and / or the number of NACKs in the feedback information.

[0042] In the above solution, determining whether to retransmit data based on the number of NACKs in the feedback information includes:

[0043] When the number of NACKs in the feedback information is greater than or equal to a set threshold, retransmitting the data;

[0044] When the number of NACKs in the feedback information is less than the set threshold, data retransmission is not performed.

[0045] In the above scheme, when the network side uses groupcast mode or multicast mode to transmit data, and the first PDSCH corresponds to at least two first feedback resources, data is retransmitted to the terminal or terminal group that erroneously receives data among the terminals or terminal groups corresponding to the at least two first feedback resources.

[0046] In the above scheme, the method further comprises:

[0047] Whether to send feedback information to the terminal is configured according to the terminal information of the terminal.

[0048] In the above scheme, the method further comprises:

[0049] Sending fourth information to the terminal; wherein,

[0050] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0051] The embodiment of the present application also provides a feedback device, including:

[0052] The first receiving unit is used to receive the first information sent by the network side; wherein,

[0053] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0054] Information representing the terminal type;

[0055] Information indicating that the terminal is located in a specified area;

[0056] Information indicating that the terminal receives and sets bearer data;

[0057] Information indicating that the terminal receives set service data.

[0058] The embodiment of the present application also provides a feedback device, including:

[0059] The first sending unit is used to send first information to the terminal; wherein,

[0060] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0061] Information representing the terminal type;

[0062] Information indicating that the terminal is located in a specified area;

[0063] Information indicating that the terminal receives and sets bearer data;

[0064] Information indicating that the terminal receives set service data.

[0065] The embodiment of the present application further provides a terminal, comprising: a first processor and a first communication interface; wherein,

[0066] The first communication interface is used to receive the first information sent by the network side; wherein,

[0067] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0068] Information representing the terminal type;

[0069] Information indicating that the terminal is located in a specified area;

[0070] Information indicating that the terminal receives and sets bearer data;

[0071] Information indicating that the terminal receives set service data.

[0072] The embodiment of the present application further provides a network device, comprising: a second processor and a second communication interface; wherein,

[0073] The second communication interface is used to send first information to the terminal; wherein,

[0074] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0075] Information representing the terminal type;

[0076] Information indicating that the terminal is located in a specified area;

[0077] Information indicating that the terminal receives and sets bearer data;

[0078] Information indicating that the terminal receives set service data.

[0079] The embodiment of the present application further provides a terminal including: a first processor and a first memory for storing a computer program that can be run on the processor,

[0080] Wherein, the first processor is used to execute the steps of any of the above-mentioned terminal side methods when running the computer program.

[0081] The embodiment of the present application further provides a network device, comprising: a second processor and a second memory for storing a computer program that can be run on the processor,

[0082] Wherein, the second processor is used to execute the steps of any one of the above-mentioned methods on the network device side when running the computer program.

[0083] An embodiment of the present application also provides a storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, the steps of any of the above-mentioned methods on the terminal side are implemented, or the steps of any of the above-mentioned methods on the network device side are implemented.

[0084] In the feedback method, apparatus, terminal, network device and storage medium provided in the embodiment of the present application, the terminal receives the first information sent by the network side, and the first information is used to indicate whether the terminal needs to carry the terminal information in the feedback information sent using the first feedback resource, specifically, to indicate whether the terminal needs to carry the information representing the terminal type and / or the information representing the terminal being located in the specified area and / or the information representing the terminal receiving the set bearer data and / or the information representing the terminal receiving the set service data in the feedback information sent using the first feedback resource. In this way, the network side can flexibly determine whether to retransmit the data to the terminal according to the different service scenarios or different service requirements of the terminal, effectively reducing the transmission overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1 It is a schematic diagram of micro-domain network communication scenario;

[0086] Figure 2 A schematic diagram of a feedback method flow in an embodiment of the present application;

[0087] Figure 3 This is a flow chart of another feedback method according to an embodiment of the present application;

[0088] Figure 4 This is a schematic diagram of the feedback method of the application embodiment of this application;

[0089] Figure 5 This is a schematic diagram of the structure of a feedback device according to an embodiment of the present application;

[0090] Figure 6 This is a schematic diagram of another feedback device structure according to an embodiment of the present application;

[0091] Figure 7 This is a schematic diagram of the terminal structure of an embodiment of the present application;

[0092] Figure 8 This is a schematic diagram of the network device structure of an embodiment of the present application. DETAILED DESCRIPTION

[0093] Some information may be lost during the channel transmission process. In order to ensure the integrity of the information, the data needs to be retransmitted so that all the information can be received correctly. In order to ensure the reliability of data transmission, a retransmission mechanism is introduced in the communication system, including: the HARQ mechanism of the media access control (MAC) layer and the automatic repeat request (ARQ) mechanism of the radio link control (RLC) layer. In the new radio (NR), both uplink and downlink HARQ are asynchronous HARQ. Each HARQ feedback information in NR can be for an uplink or downlink transport block (TB), or for a code block group (CBG). That is, when a TB block is divided into multiple CBGs for transmission, each HARQ feedback information corresponds to a CBG.

[0094] After the introduction of the unicast or multicast HARQ feedback mechanism and the physical sidelink feedback channel (PSFCH) used to carry HARQ, the receiving terminal can send HARQ feedback information to the transmitting terminal through PSFCH when unicast or multicast is used for data transmission. The base station can control the switch of the sidelink (SL) HARQ function through the radio resource control (RRC) message of the Uu port, or the terminal can control the switch of the sidelink (SL) HARQ function through its own MAC layer or PHY layer. When the configuration of the three layers of RRC, MAC and PHY activates SL HARQ, the receiving terminal needs to feedback the reception status of the corresponding physical sidelink shared channel (PSSCH) on PSFCH. In order to better adapt to the characteristics of the three transmission modes of multicast, broadcast and unicast, NR SL supports two HARQ feedback modes, among which feedback mode one: ACK / NACK HARQ feedback; feedback mode two: HARQ-NACK only feedback. In ACK / NACK HARQ feedback, when the receiving terminal determines that PSSCH demodulation is successful, it feeds back ACK on the PSFCH corresponding to the PSSCH, and when the receiving terminal determines that PSSCH demodulation fails, it feeds back NACK on the PSFCH corresponding to the PSSCH. ACK / NACK HARQ feedback is applicable to unicast or multicast data transmission. In HARQ-NACK only feedback, the receiving terminal does not provide feedback when it determines that PSSCH demodulation is successful, but feeds back NACK when it determines that PSSCH demodulation fails. HARQ-NACK only feedback is only applicable to multicast transmission.

[0095] When the PHY layer of the transmitting terminal obtains the HARQ result of ACK or NACK, it needs to notify the upper layer of the result. Among them, for unicast data transmission, the HARQ result reported by the transmitting terminal to the upper layer is the same as the judgment result of PSFCH; for multicast data transmission using ACK / NACK HARQ feedback, for all receiving terminals that the transmitting terminal expects to receive PSSCH, if the judgment result of the sent PSFCH is ACK, then the transmitting terminal reports ACK to the upper layer. If there is NACK in the PSFCH sent by all receiving terminals, then the transmitting terminal can only notify the upper layer of NACK; for multicast data transmission using HARQ-NACK only feedback, for all receiving terminals that the transmitting terminal expects to receive PSSCH, if at least one receiving terminal sends a PSFCH with a judgment result of NACK, then the transmitting terminal notifies the upper layer of NACK. If all receiving terminals send PSFCH with a judgment result of ACK, then the transmitting terminal notifies the upper layer of ACK.

[0096] Figure 1 A typical centralized micro-domain communication network deployment mode is shown, which can be applied to scenarios such as factory control and in-vehicle network. In this case, the fixed access point is used as the unified AP of the micro-domain to uniformly allocate resources and manage interference for the entire micro-domain network. Considering the typical application scenarios of micro-domain communication technology, a large number of wireless devices (micro-domain user equipment (UE, User Equipment)) will be deployed in the micro-domain network, and these devices need to work closely together to achieve a certain function. The micro-domain network consists of APs and terminals. The terminals include sensors and actuators. Among them, sensors are mainly used to collect data, and actuators are mainly used to execute commands. The execution of actuators will affect the data reporting of sensors. For example, in the micro-domain of a production line, a machine is generally composed of multiple components, including controllers, sensors, actuators, etc. The components are wirelessly connected based on the micro-domain system. The controller runs logical control based on the measurement results of the sensor, generates and sends movement instructions to the actuator, so that the actuator accurately moves or rotates the corresponding components to complete the operation task of the machine. In this scenario, the AP needs to determine whether to retransmit data based on the feedback information of different types of terminals and terminals of different service types.

[0097] In the related art, for direct link feedback, the terminal can only select one feedback mode. From the previous description of different feedback modes, it can be seen that for ACK / NACK HARQ feedback, each receiving terminal sends HARQ feedback information on an independent feedback resource based on whether the received data is incorrect. It is suitable for connection-oriented multicast, and determines the respective feedback resources according to the multicast member identifier (ID, Identify) or the source ID. The feedback overhead is large, and because the micro-domain communication system is based on a group of terminals to complete a certain function, it does not require all terminals to correctly transmit or receive data. Therefore, ACK / NACK HARQ feedback cannot be directly applied to the micro-domain communication system. For the above-mentioned HARQ-NACK only feedback, if any receiving terminal receives data incorrectly, it sends HARQ-NACK information on the shared feedback resource, and the reliability is relatively poor.

[0098] Based on this, in each embodiment of the present application, the terminal receives the first information sent by the network side, and the first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource, specifically, to indicate whether the terminal needs to carry information representing the terminal type and / or information representing that the terminal is located in a specified area and / or information representing that the terminal receives set bearer data and / or information representing that the terminal receives set service data in the feedback information sent using the first feedback resource. In this way, the network side can flexibly determine whether to perform data transmission on the terminal according to different service scenarios or different service requirements of the terminal, effectively reducing transmission overhead.

[0099] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0100] The present application embodiment provides a feedback method, which is applied to a terminal. Figure 2 , methods include:

[0101] Step 201: Receive first information sent by the network side.

[0102] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0103] Information representing the terminal type;

[0104] Information indicating that the terminal is located in a specified area;

[0105] Information indicating that the terminal receives and sets bearer data;

[0106] Information indicating that the terminal receives set service data.

[0107] Here, the network side can instruct the terminal to carry terminal information used to describe the terminal's business scenario or business demand in the feedback information when using a specific feedback resource to send feedback information. In this way, the network side can obtain the terminal's business scenario or business demand from the terminal's feedback information, and then determine whether to retransmit data to the terminal based on the business scenario or business demand. Based on the above scheme, the network side can avoid meaningless data retransmission under business scenarios or business demands that do not require data retransmission, effectively reducing transmission overhead. Combined with the micro-domain communication scenario, the AP can determine whether to retransmit data to a certain terminal based on the different business scenarios or business demands corresponding to the terminals accessing the AP, thereby effectively reducing the transmission overhead of the micro-domain network to a certain extent.

[0108] In an embodiment of the present application, the first information can be used to explicitly indicate whether the terminal needs to carry terminal information for describing the service scenario or service demand of the terminal in the feedback information. Alternatively, an implicit indication method can be used, that is, if the network side sends the first information to the terminal, then it indicates that the network side indicates that the terminal needs to carry terminal information for describing the service scenario or service demand of the terminal in the feedback information. If the network side does not send the first information to the terminal, or the terminal does not receive the first information sent by the network side, then the terminal can be understood as not needing to carry terminal information for describing the service scenario or service demand of the terminal in the feedback information.

[0109] In actual application, in order to reduce feedback overhead, the terminal information can be represented by bit information. For example, when the first information represents the terminal type, it can be agreed that 1 bit of information is used to represent the terminal type. If the bit value of the bit information is 0, it indicates that the terminal is a sensor type. If the bit value of the bit information is 1, it indicates that the terminal is an actuator type. For another example, when the first information represents whether the terminal is located in a specified area, it can be agreed that if the terminal is located in the specified area, the bit value of the bit information is 1, and if the terminal is located outside the specified area, the bit value of the bit information is 0.

[0110] Specifically, through the above terminal information, the network side can obtain the terminal type, the area where the terminal is located, the service data received by the terminal or the bearer of the data received by the terminal, and on this basis further clarify the service scenario or corresponding service requirements of the terminal.

[0111] In actual application, for the transmission resource of the first PDSCH configured for the terminal, the network side may specify the first feedback resource corresponding to the transmission resource of the first PDSCH for the terminal. In one embodiment, the method further includes:

[0112] Receive second information sent by the network side.

[0113] The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0114] In actual application, as the first feedback resource for feeding back the reception status of the first PDSCH, the first feedback resource may be carried in a physical uplink control channel (PUCCH, Physical Uplink Control Channel) or a physical uplink shared channel (PUSCH, Physical Uplink Shared Channel).

[0115] Specifically, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource, that is, the PDSCH configured by the network side for the terminal has a one-to-one correspondence with the corresponding first feedback resource.

[0116] In the case where the network side uses a multicast mode or a groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and in the case where the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group. That is, the feedback information on each first feedback resource is used to characterize the data reception status of a terminal or a terminal group. Further, when a TB block is divided into multiple CBGs for transmission, the feedback information on each first feedback resource can also be used to characterize the data reception status of a CBG.

[0117] For example, in combination with a micro-domain communication scenario, when a function requires close configuration between multiple terminals to implement the function, the multiple terminals can be used as a terminal group and use one first feedback resource to perform data reception status feedback.

[0118] Specifically, when the network side uses multicast mode or groupcast mode to transmit data, when a first PDSCH corresponds to a first feedback resource, the feedback information of all terminals is carried on the same feedback resource. At this time, the terminal uses the HARQ-NACK only feedback mode to feedback the reception status of the first PDSCH; when a first PDSCH corresponds to multiple first feedback resources, the feedback information of different terminals or different terminal groups is carried on different feedback resources, and the terminal uses the HARQ-ACK / NACK feedback mode or the HARQ-NACK only feedback mode to feedback the reception status of the first PDSCH.

[0119] In actual application, the network side may instruct the terminal which feedback mode to use on the first feedback resource. In one embodiment, the method further includes:

[0120] Receive the third information sent by the network side.

[0121] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0122] The above scheme is applied to the scenario where the network side sends data to the terminal, the terminal feeds back the data reception situation, and the network side determines whether to retransmit the data according to the data reception situation fed back by the terminal. For the scenario where the terminal side sends data to the network side, the network side feeds back the data reception, and the terminal determines whether to retransmit the data according to the data reception situation fed back by the network side, in one embodiment, the method further includes:

[0123] Receive the fourth information sent by the network side.

[0124] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0125] In actual application, the terminal can only send data to the network side in unicast form. Specifically, the network side can determine whether to send feedback information to the terminal based on the first information, for example, based on whether the terminal type is a sensor or an actuator, and / or, based on the type of service requested by the terminal, and / or, based on whether the terminal is located in a specified area, and / or, based on whether the terminal is used to receive set bearer data, and / or, based on whether the terminal is used to receive set service data, determine whether to feedback information to the terminal.

[0126] Here, the network side uses an explicit indication method to send the fourth information to the terminal. The terminal determines whether to receive feedback information based on the fourth information. If the feedback information is received, it determines whether to retransmit the data based on the data reception status of the feedback network side. If it is determined that the feedback information will not be received, the terminal does not need to retransmit the data.

[0127] In addition, the network side may also adopt an implicit indication method, that is, if the network side does not configure feedback resources, the network side will not send feedback information to the terminal.

[0128] In addition, in actual applications, the terminal can automatically determine whether to retransmit data based on the service type without the need for instructions from the network side. For example, for uplink and downlink matching services in micro-domain communication scenarios, for example, after the sensor sends uplink data, a corresponding downlink service will be generated and sent to the actuator. The sensor and the actuator are the same terminal. Then, after the terminal sends uplink data, if no data is received on the corresponding downlink resource or within the set time window, it is considered that the data transmission is erroneous, and the terminal automatically retransmits the data. Among them, the set time window is pre-configured by the network side for the terminal.

[0129] Correspondingly, the embodiment of the present application also provides a feedback method, which is applied to a network device. Figure 3 , methods include:

[0130] Step 301: Send first information to a terminal.

[0131] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0132] Information representing the terminal type;

[0133] Information indicating that the terminal is located in a specified area;

[0134] Information indicating that the terminal receives and sets bearer data;

[0135] Information indicating that the terminal receives set service data.

[0136] Here, the network side can instruct the terminal to carry terminal information used to describe the terminal's business scenario or business demand in the feedback information when using a specific feedback resource to send feedback information. In this way, the network side can obtain the terminal's business scenario or business demand from the terminal's feedback information, and then determine whether to retransmit data to the terminal based on the business scenario or business demand. Based on the above scheme, the network side can avoid meaningless data retransmission under business scenarios or business demands that do not require data retransmission, effectively reducing transmission overhead. Combined with the micro-domain communication scenario, the AP can determine whether to retransmit data to a certain terminal based on the different business scenarios or business demands corresponding to the terminals accessing the AP, thereby effectively reducing the transmission overhead of the micro-domain network to a certain extent.

[0137] In an embodiment of the present application, the first information can be used to explicitly indicate whether the terminal needs to carry terminal information for describing the service scenario or service demand of the terminal in the feedback information. Alternatively, an implicit indication method can be used, that is, if the network side sends the first information to the terminal, then it indicates that the network side indicates that the terminal needs to carry terminal information for describing the service scenario or service demand of the terminal in the feedback information. If the network side does not send the first information to the terminal, or the terminal does not receive the first information sent by the network side, then the terminal can be understood as not needing to carry terminal information for describing the service scenario or service demand of the terminal in the feedback information.

[0138] In actual application, in order to reduce feedback overhead, the terminal information can be represented by bit information. For example, when the first information represents the terminal type, it can be agreed that 1 bit of information is used to represent the terminal type. If the bit value of the bit information is 0, it indicates that the terminal is a sensor type. If the bit value of the bit information is 1, it indicates that the terminal is an actuator type. For another example, when the first information represents whether the terminal is located in a specified area, it can be agreed that if the terminal is located in the specified area, the bit value of the bit information is 1, and if the terminal is located outside the specified area, the bit value of the bit information is 0.

[0139] Specifically, through the above terminal information, the network side can obtain the terminal type, the area where the terminal is located, the service data received by the terminal or the bearer of the data received by the terminal, and on this basis further clarify the service scenario or corresponding service requirements of the terminal.

[0140] In actual application, for the transmission resource of the first PDSCH configured for the terminal, the network side may specify the first feedback resource corresponding to the transmission resource of the first PDSCH for the terminal. In one embodiment, the method further includes:

[0141] Sending second information to the terminal.

[0142] The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0143] Specifically, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource, that is, the PDSCH configured by the network side for the terminal has a one-to-one correspondence with the corresponding first feedback resource.

[0144] In the case where the network side uses a multicast mode or a groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and in the case where the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group. That is, the feedback information on each first feedback resource is used to characterize the data reception status of a terminal or a terminal group. Further, when a TB block is divided into multiple CBGs for transmission, the feedback information on each first feedback resource can also be used to characterize the data reception status of a CBG.

[0145] Specifically, when the network side uses multicast mode or groupcast mode to transmit data, when a first PDSCH corresponds to a first feedback resource, the feedback information of all terminals is carried on the same feedback resource. At this time, the terminal uses the HARQ-NACK only feedback mode to feedback the reception status of the first PDSCH; when a first PDSCH corresponds to multiple first feedback resources, the feedback information of different terminals or different terminal groups is carried on different feedback resources, and the terminal uses the HARQ-ACK / NACK feedback mode or the HARQ-NACK only feedback mode to feedback the reception status of the first PDSCH.

[0146] In actual application, the network side may instruct the terminal which feedback mode to use on the first feedback resource. In one embodiment, the method further includes:

[0147] Sending third information to the terminal.

[0148] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0149] In one embodiment, the method further comprises:

[0150] When the network side uses the unicast mode to transmit data and the feedback information sent by the terminal includes NACK, determining whether to retransmit the data is based on the terminal information carried in the feedback information.

[0151] Here, when the network side unicasts data, in the case where the terminal feedback is NACK, the network side determines whether to retransmit the data based on the terminal information carried in the terminal side feedback information. For example, when the terminal information indicates that the terminal type is a sensor, the network side does not retransmit the erroneous data, and when the terminal information indicates that the terminal type is an actuator, the network side retransmits the erroneous data; for another example, when the terminal information indicates that the terminal is outside the specified area, the network side does not retransmit the erroneous data, and when the terminal information indicates that the terminal is within the specified area, the network side retransmits the erroneous data.

[0152] When the network side uses a groupcast mode or a multicast mode to transmit data and the feedback information sent by the terminal includes NACK, whether to retransmit the data is determined based on the terminal information carried in the feedback information and / or the number of NACKs in the feedback information.

[0153] Here, when the network side multicasts or multicasts data, when determining whether to retransmit data, the network side may make a judgment based only on the terminal information carried in the feedback information of the terminal side, or may make a judgment based only on the number of NACKs received, or may make a judgment based on the terminal information carried in the feedback information of the terminal side and the number of NACKs received, to determine whether the data needs to be retransmitted. Among them, when making a judgment based on the terminal information carried in the feedback information of the terminal side and the number of NACKs received, the network side first determines the terminal that needs to retransmit data based on the terminal information, and then further determines whether to retransmit data for the terminal based on the number of NACKs fed back by the terminal.

[0154] Specifically, in one embodiment, determining whether to retransmit data based on the number of NACKs in the feedback information includes:

[0155] When the number of NACKs in the feedback information is greater than or equal to a set threshold, retransmitting the data;

[0156] When the number of NACKs in the feedback information is less than the set threshold, data retransmission is not performed.

[0157] Here, the network side predefines a set threshold for receiving NACK, and the set threshold value is an integer greater than or equal to 1, which is used to determine whether it is necessary to retransmit the erroneous data according to the number of received NACKs. If the number of received NACKs is greater than or equal to the set threshold, the network side retransmits the erroneous data, and if the number of received NACKs is less than the set threshold, the network side does not retransmit the erroneous data.

[0158] In one embodiment, when the network side uses a groupcast mode or a multicast mode to transmit data, and the first PDSCH corresponds to at least two first feedback resources, data is retransmitted to a terminal or a terminal group that erroneously receives data among the terminals or terminal groups corresponding to the at least two first feedback resources.

[0159] Here, in the case where the first PDSCH and the first feedback resource are in a one-to-many correspondence relationship, and each first feedback resource corresponds to a terminal or a terminal group, if the network side determines that the erroneous data needs to be retransmitted, the network side only retransmits the data to the terminal or terminal group that received the data erroneously, so as to further reduce the transmission overhead. In addition, in actual application, the network side can also retransmit the data in the form of groupcast or multicast.

[0160] The above scheme is applied to the scenario where the network side sends data to the terminal, the terminal feeds back the data reception situation, and the network side determines whether to retransmit the data according to the data reception situation fed back by the terminal. For the scenario where the terminal side sends data to the network side, the network side feeds back the data reception, and the terminal determines whether to retransmit the data according to the data reception situation fed back by the network side, in one embodiment, the method further includes:

[0161] Whether to send feedback information to the terminal is configured according to the terminal information of the terminal.

[0162] In actual application, the terminal can only send data to the network side in unicast form. Specifically, the network side can determine whether to send feedback information to the terminal based on the first information, for example, based on whether the terminal type is a sensor or an actuator, and / or, based on the type of service requested by the terminal, and / or, based on whether the terminal is located in a specified area, and / or, based on whether the terminal is used to receive set bearer data, and / or, based on whether the terminal is used to receive set service data, determine whether to feedback information to the terminal.

[0163] In one embodiment, the method further comprises:

[0164] Sending fourth information to the terminal.

[0165] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0166] Here, the network side uses an explicit indication method to send the fourth information to the terminal. The terminal determines whether to receive feedback information based on the fourth information. If the feedback information is received, it determines whether to retransmit the data based on the data reception status of the feedback network side. If it is determined that the feedback information will not be received, the terminal does not need to retransmit the data.

[0167] In addition, the network side may also adopt an implicit indication method, that is, if the network side does not configure feedback resources, the network side will not send feedback information to the terminal.

[0168] The present application is further described in detail below in conjunction with application examples.

[0169] In this application embodiment, the network side configures the first feedback resource corresponding to the PDSCH through downlink control information (DCI). Figure 4 As shown:

[0170] 1. The network side sends multicast data to five terminals (UE 0 to UE 4) on PDSCH, and the first feedback resource corresponding to PDSCH corresponds to five different terminals. According to the terminal identification and other information of the terminal, the network side and the terminal side can distinguish the feedback information of each terminal.

[0171] 2. The network side instructs the terminal to carry information characterizing the terminal type in the feedback information through the first information carried in the DCI, wherein if the terminal is a sensor, the terminal feedbacks bit information "0", and if the terminal is an actuator, the terminal feedbacks bit information "1".

[0172] 3.5 The terminals send feedback information to the network side according to whether they have correctly received the PDSCH. If the PDSCH is correctly received, the terminal feedbacks the bit information "1", and if the PDSCH is not correctly received, the terminal feedbacks the bit information "0".

[0173] 4. The network side predefines the threshold value of the number of NACKs as 2.

[0174] 5. Combination Figure 4 , each terminal corresponds to 2 bits of bit information, the high bit of which represents the terminal type, and the low bit represents whether the terminal has correctly received the PDSCH. For example, the bit information "00" indicates that the terminal is a sensor and has correctly received the PDSCH. If the network side defines that data retransmission is not performed for the sensor, then from the perspective of terminal type, the terminals that meet the data retransmission requirements are UE0, UE 2, and UE 4, and the corresponding number of NACKs is 3, which is greater than the set threshold.

[0175] 6. The network side combines the number of NACKs and the terminal type to determine that the data needs to be retransmitted to UE 0 and UE3.

[0176] In actual application, in a micro-domain communication scenario, a certain function may be implemented based on a group of terminals. For the group of terminals, it may not be required that all terminals in the group receive or send data correctly. Therefore, the embodiment of the present application can flexibly determine whether to retransmit data or transmit feedback to the terminal according to the business scenario or actual business needs of the terminal, effectively reducing the transmission overhead.

[0177] In order to implement the feedback method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a feedback device, which is arranged on the terminal, such as Figure 5 As shown, the device comprises:

[0178] The first receiving unit 501 is used to receive the first information sent by the network side; wherein,

[0179] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0180] Information representing the terminal type;

[0181] Information indicating that the terminal is located in a specified area;

[0182] Information indicating that the terminal receives and sets bearer data;

[0183] Information indicating that the terminal receives set service data.

[0184] In one embodiment, the device further comprises:

[0185] The second receiving unit is used to receive the second information sent by the network side; wherein,

[0186] The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0187] In one embodiment, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or,

[0188] When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

[0189] In one embodiment, when the first PDSCH corresponds to a first feedback resource, the terminal uses a HARQ-NACK only feedback mode to feed back a reception status of the first PDSCH; and / or,

[0190] In a case where the first PDSCH corresponds to at least two first feedback resources, the terminal uses a HARQ-ACK / NACK feedback mode or a HARQ-NACK only feedback mode to feed back a reception status of the first PDSCH.

[0191] In one embodiment, the device further comprises:

[0192] The third receiving unit is used to receive the third information sent by the network side; wherein,

[0193] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0194] In one embodiment, the device further comprises:

[0195] The fourth receiving unit is used to receive the fourth information sent by the network side; wherein,

[0196] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0197] In actual application, the first receiving unit 501, the second receiving unit, the third receiving unit and the fourth receiving unit can be implemented by a communication interface in the feedback device.

[0198] In order to implement the feedback method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a feedback device, which is arranged on the network device, such as Figure 6 As shown, the device comprises:

[0199] The first sending unit 601 is used to send first information to the terminal; wherein,

[0200] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0201] Information representing the terminal type;

[0202] Information indicating that the terminal is located in a specified area;

[0203] Information indicating that the terminal receives and sets bearer data;

[0204] Information indicating that the terminal receives set service data.

[0205] In one embodiment, the device further comprises:

[0206] The second sending unit is used to send second information to the terminal; wherein,

[0207] The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0208] In one embodiment, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or,

[0209] When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

[0210] In one embodiment, the device further comprises:

[0211] The third sending unit is used to send third information to the terminal; wherein,

[0212] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0213] In one embodiment, the device further comprises:

[0214] A feedback unit is used to determine whether to retransmit the data based on the terminal information carried in the feedback information when the network side uses a unicast mode to transmit data and the feedback information sent by the terminal includes NACK; and / or, when the network side uses a multicast mode or a multicast mode to transmit data and the feedback information sent by the terminal includes NACK, determine whether to retransmit the data based on the terminal information carried in the feedback information and / or the number of NACKs in the feedback information.

[0215] In one embodiment, determining whether to retransmit data based on the number of NACKs in the feedback information includes:

[0216] When the number of NACKs in the feedback information is greater than or equal to a set threshold, retransmitting the data;

[0217] When the number of NACKs in the feedback information is less than the set threshold, data retransmission is not performed.

[0218] In one embodiment, the feedback unit uses a groupcast mode or a multicast mode to transmit data on the network side, and when the first PDSCH corresponds to at least two first feedback resources, data is retransmitted to a terminal or terminal group that erroneously receives data among the terminals or terminal groups corresponding to the at least two first feedback resources.

[0219] In one embodiment, the device further comprises:

[0220] A determining unit is used to configure whether to send feedback information to the terminal according to the terminal information of the terminal.

[0221] In one embodiment, the device further comprises:

[0222] The fourth sending unit is used to send fourth information to the terminal; wherein,

[0223] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0224] In actual application, the first sending unit 601, the feedback unit, the second sending unit, the third sending unit and the fourth sending unit may be implemented by a communication interface in the feedback device, and the determination unit may be implemented by a processor in the feedback device.

[0225] It should be noted that: the feedback device provided in the above embodiment only uses the division of the above program modules as an example when performing feedback. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the feedback device provided in the above embodiment and the feedback method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0226] Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a terminal, such as Figure 7 As shown, the terminal 700 includes:

[0227] The first communication interface 701 is capable of exchanging information with other network nodes;

[0228] The first processor 702 is connected to the first communication interface 701 to implement information exchange with other network nodes, and is used to execute the method provided by one or more technical solutions of the terminal side when running a computer program. The computer program is stored in the first memory 703.

[0229] Specifically, the first communication interface 701 is used to receive the first information sent by the network side; wherein,

[0230] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0231] Information representing the terminal type;

[0232] Information indicating that the terminal is located in a specified area;

[0233] Information indicating that the terminal receives and sets bearer data;

[0234] Information indicating that the terminal receives set service data.

[0235] In one embodiment, the first communication interface 701 is further used to receive second information sent by the network side;

[0236] The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0237] In one embodiment, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or,

[0238] When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

[0239] In one embodiment, when the first PDSCH corresponds to a first feedback resource, the terminal uses a HARQ-NACK only feedback mode to feed back a reception status of the first PDSCH; and / or,

[0240] In a case where the first PDSCH corresponds to at least two first feedback resources, the terminal uses a HARQ-ACK / NACK feedback mode or a HARQ-NACK only feedback mode to feed back a reception status of the first PDSCH.

[0241] In one embodiment, the first communication interface 701 is further used to receive third information sent by the network side; wherein,

[0242] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0243] In one embodiment, the first communication interface 701 is further used to receive fourth information sent by the network side; wherein,

[0244] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0245] It should be noted that the specific processing process of the first processor 702 and the first communication interface 701 can be understood by referring to the above method.

[0246] Of course, in actual application, the various components in the terminal 700 are coupled together through the bus system 704. It can be understood that the bus system 704 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 704 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Figure 7 Various buses are labeled as bus system 704 .

[0247] The first memory 703 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 700. Examples of such data include: any computer program used to operate on the terminal 700.

[0248] The method disclosed in the above embodiment of the present application can be applied to the first processor 702, or implemented by the first processor 702. The first processor 702 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware or software instructions in the first processor 702. The above-mentioned first processor 702 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The first processor 702 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the first memory 703, and the first processor 702 reads the information in the first memory 703 and completes the steps of the above method in combination with its hardware.

[0249] In an exemplary embodiment, the terminal 700 may be implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to execute the aforementioned method.

[0250] Based on the hardware implementation of the above program modules, and in order to implement the method of the network device side of the embodiment of the present application, the embodiment of the present application also provides a network device, such as Figure 8 As shown, the network device 800 includes:

[0251] The second communication interface 801 is capable of exchanging information with other network nodes;

[0252] The second processor 802 is connected to the second communication interface 801 to implement information exchange with other network nodes, and is used to execute the method provided by one or more technical solutions of the network device side when running the computer program. The computer program is stored in the second memory 803.

[0253] Specifically, the second communication interface 801 is used to send first information to the terminal; wherein,

[0254] The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following:

[0255] Information representing the terminal type;

[0256] Information indicating that the terminal is located in a specified area;

[0257] Information indicating that the terminal receives and sets bearer data;

[0258] Information indicating that the terminal receives set service data.

[0259] In one embodiment, the second communication interface 801 is further used to send second information to the terminal;

[0260] The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

[0261] In one embodiment, when the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or,

[0262] When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

[0263] In one embodiment, the second communication interface 801 is further used to send third information to the terminal; wherein,

[0264] The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

[0265] In one embodiment, the second communication interface 801 is further used to determine whether to retransmit the data based on the terminal information carried in the feedback information when the network side uses a unicast mode to transmit data and the feedback information sent by the terminal includes NACK; and / or, when the network side uses a multicast mode or a multicast mode to transmit data and the feedback information sent by the terminal includes NACK, determine whether to retransmit the data based on the terminal information carried in the feedback information and / or the number of NACKs in the feedback information.

[0266] In one embodiment, the second communication interface 801 determines whether to retransmit data based on the number of NACKs in the feedback information, including:

[0267] When the number of NACKs in the feedback information is greater than or equal to a set threshold, retransmitting the data;

[0268] When the number of NACKs in the feedback information is less than the set threshold, data retransmission is not performed.

[0269] In one embodiment, when the second communication interface 801 uses a groupcast mode or a multicast mode to transmit data on the network side, and when the first PDSCH corresponds to at least two first feedback resources, data is retransmitted to a terminal or a terminal group that erroneously receives data among the terminals or terminal groups corresponding to the at least two first feedback resources.

[0270] In one embodiment, the second processor 802 is configured to configure whether to send feedback information to the terminal according to the terminal information of the terminal.

[0271] In one embodiment, the second communication interface 801 is further used to send fourth information to the terminal;

[0272] in,

[0273] The fourth information is used to indicate whether the network side will send feedback information to the terminal.

[0274] It should be noted that the specific processing process of the second processor 802 and the second communication interface 801 can be understood by referring to the above method.

[0275] Of course, in actual application, the various components in the network device 800 are coupled together through the bus system 804. It can be understood that the bus system 804 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 804 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Figure 8 Various buses are labeled as bus system 804 .

[0276] The second memory 803 in the embodiment of the present application is used to store various types of data to support the operation of the network device 800. Examples of such data include: any computer program used to operate on the network device 800.

[0277] The method disclosed in the above embodiment of the present application can be applied to the second processor 802, or implemented by the second processor 802. The second processor 802 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the second processor 802. The above-mentioned second processor 802 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The second processor 802 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the second memory 803, and the second processor 802 reads the information in the second memory 803 and completes the steps of the above method in combination with its hardware.

[0278] In an exemplary embodiment, the network device 800 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned methods.

[0279] It can be understood that the memory (first memory 703, second memory 803) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0280] In an exemplary embodiment, the embodiment of the present application further provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 703 storing a computer program, and the computer program can be executed by the first processor 702 of the terminal 700 to complete the steps of the aforementioned terminal side method. For another example, a second memory 803 storing a computer program can be executed by the second processor 802 of the network device 800 to complete the steps of the aforementioned network device side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

[0281] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0282] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0283] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0284] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A feedback method, characterized in that: Applied to terminals, including: Receive the first information sent by the network side; wherein, The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following: Information representing the terminal type; Information indicating that the terminal is located in a specified area; Information indicating that the terminal receives and sets bearer data; Information indicating that the terminal receives set service data.

2. The method according to claim 1, characterized in that The method further comprises: receiving second information sent by the network side; wherein, The second information is used to indicate the transmission resource of the first physical downlink shared channel PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feed back the reception status of the first PDSCH.

3. The method according to claim 2, characterized in that When the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or, When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

4. The method according to claim 3, characterized in that In a case where the first PDSCH corresponds to a first feedback resource, the terminal uses a hybrid automatic repeat request negative feedback HARQ-NACK only feedback mode to feed back the reception status of the first PDSCH; and / or, In the case that the first PDSCH corresponds to at least two first feedback resources, the terminal uses a HARQ positive feedback or negative feedback HARQ-ACK / NACK feedback mode or a HARQ-NACK only feedback mode to feed back the reception status of the first PDSCH.

5. The method according to claim 1, characterized in that The method further comprises: Receive the third information sent by the network side; wherein, The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

6. The method according to claim 1, characterized in that The method further comprises: Receive the fourth information sent by the network side; wherein, The fourth information is used to indicate whether the network side will send feedback information to the terminal.

7. A feedback method, characterized in that: Applied to network equipment, including: Sending first information to a terminal; wherein, The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following: Information representing the terminal type; Information indicating that the terminal is located in a specified area; Information indicating that the terminal receives and sets bearer data; Information indicating that the terminal receives set service data.

8. The method according to claim 7, characterized in that The method further comprises: Sending second information to the terminal; wherein, The second information is used to indicate the transmission resource of the first PDSCH and at least one first feedback resource corresponding to the first PDSCH; the at least one first feedback resource is used to feedback the reception status of the first PDSCH.

9. The method according to claim 8, characterized in that When the network side uses unicast mode to transmit data, the first PDSCH corresponds to a first feedback resource; and / or, When the network side uses multicast mode or groupcast mode to transmit data, the first PDSCH corresponds to at least one first feedback resource, and when the first PDSCH corresponds to at least two first feedback resources, each of the at least two first feedback resources corresponds to a terminal or a terminal group.

10. The method according to claim 7, characterized in that The method further comprises: Sending third information to the terminal; wherein, The third information is used to indicate a first feedback resource used by the terminal and a feedback mode of the terminal on the first feedback resource; the feedback mode includes HARQ-ACK / NACK or HARQ-NACK only.

11. The method according to any one of claims 7 to 10, characterized in that: The method further comprises: When the network side uses unicast mode to transmit data and the feedback information sent by the terminal includes NACK, determining whether to retransmit the data based on the terminal information carried in the feedback information; and / or, When the network side uses a groupcast mode or a multicast mode to transmit data and the feedback information sent by the terminal includes NACK, whether to retransmit the data is determined based on the terminal information carried in the feedback information and / or the number of NACKs in the feedback information.

12. The method according to claim 11, characterized in that Determining whether to retransmit data based on the number of NACKs in the feedback information includes: When the number of NACKs in the feedback information is greater than or equal to a set threshold, retransmitting the data; When the number of NACKs in the feedback information is less than the set threshold, data retransmission is not performed.

13. The method according to claim 11, characterized in that When the network side uses groupcast mode or multicast mode to transmit data and the first PDSCH corresponds to at least two first feedback resources, data is retransmitted to the terminal or terminal group that erroneously receives data among the terminals or terminal groups corresponding to the at least two first feedback resources.

14. The method according to claim 10, characterized in that The method further comprises: Whether to send feedback information to the terminal is configured according to the terminal information of the terminal.

15. The method according to claim 14, characterized in that The method further comprises: Sending fourth information to the terminal; wherein, The fourth information is used to indicate whether the network side will send feedback information to the terminal.

16. A feedback device, characterized in that: include: The first receiving unit is used to receive the first information sent by the network side; wherein, The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following: Information representing the terminal type; Information indicating that the terminal is located in a specified area; Information indicating that the terminal receives and sets bearer data; Information indicating that the terminal receives set service data.

17. A feedback device, characterized in that: include: The first sending unit is used to send first information to the terminal; wherein, The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following: Information representing the terminal type; Information indicating that the terminal is located in a specified area; Information indicating that the terminal receives and sets bearer data; Information indicating that the terminal receives set service data.

18. A terminal, characterized in that: include: A first processor and a first communication interface; wherein, The first communication interface is used to receive the first information sent by the network side; wherein, The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following: Information representing the terminal type; Information indicating that the terminal is located in a specified area; Information indicating that the terminal receives and sets bearer data; Information indicating that the terminal receives set service data.

19. A network device, characterized in that: include: A second processor and a second communication interface; wherein, The second communication interface is used to send first information to the terminal; wherein, The first information is used to indicate whether the terminal needs to carry terminal information in the feedback information sent using the first feedback resource; the terminal information includes at least one of the following: Information representing the terminal type; Information indicating that the terminal is located in a specified area; Information indicating that the terminal receives and sets bearer data; Information indicating that the terminal receives set service data.

20. A terminal, characterized in that: include: a first processor and a first memory for storing a computer program executable on the processor, Wherein, when the first processor is used to run the computer program, the steps of the method described in any one of claims 1 to 6 are executed.

21. A network device, characterized in that: include: a second processor and a second memory for storing a computer program executable on the processor, Wherein, when the second processor is used to run the computer program, the steps of the method described in any one of claims 7 to 15 are executed.

22. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 6, or implements the steps of the method according to any one of claims 7 to 15.

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