Communication method and apparatus, communication device, storage medium, and chip

Abstract

The present disclosure relates to a communication method, device, communication equipment, storage medium and chip, and belongs to the technical field of communication. The feedback mode of HARQ of a terminal device is only NACK feedback, the method comprises the following steps: receiving target data sent by a network device; identifying whether the feedback time of HARQ corresponding to the target data is in a target time slot range, wherein the target time slot range comprises a measurement gap GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer; if the feedback time is in the target time slot range, it is determined that the target data is not successfully received. Thus, in the case that the feedback mode of HARQ of the terminal device is only NACK feedback, if the feedback time is in the target time slot range, it is directly determined that the data is not successfully received, so as to trigger the retransmission mechanism of the MAC layer, improve the success rate of MAC layer data transmission, and the retransmission mechanism of the higher layer is not triggered, thereby reducing the transmission delay.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method and device, a communication apparatus, a storage medium and a chip. BACKGROUND

[0002] Currently, when a terminal device fails to receive data, a MAC (Media Access Control) layer retransmission mechanism can not be triggered, leading to MAC layer data transmission failure and service termination, and triggering a higher layer retransmission mechanism, such as triggering an RLC (Radio Link Control) layer retransmission mechanism, resulting in a large transmission delay. SUMMARY

[0003] The present disclosure provides a communication method and device, a communication apparatus, a storage medium and a chip to at least solve the problem that in the prior art, when a terminal device fails to receive data, a MAC layer retransmission mechanism can not be triggered, leading to a large transmission delay. The technical solutions of the present disclosure are as follows.

[0004] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, a feedback mode of a HARQ (Hybrid Automatic Repeat Request) of a terminal device is only NACK (Negative Acknowledgement), and the method comprises: receiving target data sent by a network device; identifying whether a feedback time of the HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range comprises a measurement gap GAP and N consecutive uplink time slots after the measurement GAP, N being a positive integer; and if the feedback time is within the target time slot range, determining that the target data is not successfully received.

[0005] According to a second aspect of an embodiment of the present disclosure, another communication method is provided, a feedback mode of a HARQ of a terminal device is only NACK, and the method comprises: sending target data to the terminal device; identifying whether a feedback time of the HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range comprises a measurement GAP and N consecutive uplink time slots after the measurement GAP, N being a positive integer; and if the feedback time is within the target time slot range, determining that the terminal device has not successfully received the target data.

[0006] According to a third aspect of embodiments of the present disclosure, a communication apparatus is provided, a feedback mode of HARQ of a terminal device is only NACK feedback, the apparatus comprising: a receiving module configured to perform receiving target data sent by a network device; an identifying module configured to perform identifying whether a feedback time of HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range comprises a measurement GAP and N consecutive uplink time slots after the measurement GAP, N being a positive integer; and a determining module configured to perform determining that the target data is not successfully received if the feedback time is within the target time slot range.

[0007] According to a fourth aspect of embodiments of the present disclosure, another communication apparatus is provided, a feedback mode of HARQ of a terminal device is only NACK feedback, the apparatus comprising: a sending module configured to perform sending target data to the terminal device; an identifying module configured to perform identifying whether a feedback time of HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range comprises a measurement GAP and N consecutive uplink time slots after the measurement GAP, N being a positive integer; and a determining module configured to perform determining that the terminal device does not successfully receive the target data if the feedback time is within the target time slot range.

[0008] According to a fifth aspect of embodiments of the present disclosure, a communication device is provided, comprising: one or more processors; wherein the processor is configured to invoke instructions to cause the communication device to perform the method of the first aspect and the second aspect.

[0009] According to a sixth aspect of embodiments of the present disclosure, a storage medium is provided, the storage medium storing instructions, when the instructions run on a communication device, causing the communication device to perform the method of the first aspect and the second aspect.

[0010] According to a seventh aspect of embodiments of the present disclosure, a chip is provided, comprising one or more interface circuits and one or more processors; the interface circuit is configured to receive a signal and send the signal to the processor, the signal comprising computer instructions stored in a memory, when the processor executes the computer instructions, causing the chip to perform the steps of the method of the first aspect and the second aspect of the present disclosure.

[0011] The embodiments of the present disclosure provide at least the following beneficial effects: the feedback mode of the HARQ of the terminal device is only to feed back NACK, target data sent by the network device is received, and it is identified whether a feedback time of the HARQ corresponding to the target data is in a target time slot range, wherein the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer. If the feedback time is in the target time slot range, it is determined that the target data is not successfully received. Thus, in the case that the feedback mode of the HARQ of the terminal device is only to feed back NACK, if the feedback time is in the target time slot range, it is directly determined that the data is not successfully received, so as to trigger the retransmission mechanism of the MAC layer, improve the success rate of the data transmission of the MAC layer, and not trigger the retransmission mechanism of the higher layer, thereby reducing the transmission delay.

[0012] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings, which are incorporated into and form part of the specification, illustrate an embodiment consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure, and do not constitute an improper limitation of the present disclosure.

[0014] Figure 1 is an architecture schematic diagram of a communication system according to an exemplary embodiment.

[0015] Figure 2 is a flowchart of a communication method according to an exemplary embodiment.

[0016] Figure 3 is a schematic diagram of a communication method according to an exemplary embodiment.

[0017] Figure 4 is a flowchart of a communication method according to another exemplary embodiment.

[0018] Figure 5 is a flowchart of a communication method according to another exemplary embodiment.

[0019] Figure 6 is a flowchart of a communication method according to another exemplary embodiment.

[0020] Figure 7 is a block diagram of a communication device according to an exemplary embodiment.

[0021] Figure 8 is a block diagram of another communication device according to an exemplary embodiment.

[0022] Figure 9A structural schematic diagram of a communication device provided by an embodiment of the present disclosure is shown.

[0023] Figure 10 A structural schematic diagram of a chip provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0024] In order for those skilled in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings.

[0025] It should be noted that the terms "first", "second", and the like in the specification and claims of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The implementation described in the following exemplary embodiments does not represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0026] The acquisition, storage, use, processing, etc. of data in the technical solutions of the present disclosure comply with the relevant legal regulations.

[0027] The present disclosure proposes an invention name. In some embodiments, the terms of communication method, information processing method, information sending method, information receiving method, etc. can be replaced with each other, and the terms of communication device, information processing device, information sending device, information receiving device, etc. can be replaced with each other, and the terms of information processing system, communication system, information sending system, information receiving system, etc. can be replaced with each other.

[0028] In some embodiments, the device, etc. can be interpreted as an entity or a virtual one, and its name is not limited to the name recorded in the embodiments. The terms of "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc. can be replaced with each other.

[0029] In some embodiments, "network" can be interpreted as a device (for example, access network device, core network device, etc.) contained in the network.

[0030] In some embodiments, the terms “access network device (AN device),” “radio access network device (RAN device),” “base station (BS),” “radio base station,” “fixed station,” “node,” “access point,” “transmission point (TP),” “reception point (RP),” “transmission / reception point (TRP),” “panel,” “antenna panel,” “antenna array,” “cell,” “macro cell,” “small cell,” “femto cell,” “pico cell,” “sector,” “cell group,” “carrier,” “component carrier,” “bandwidth part (BWP),” and the like can be used interchangeably.

[0031] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", "client" and so on can be replaced with each other.

[0032] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (for example, also referred to as device-to-device (D2D), vehicle-to-everything (V2X), and so on), embodiments of the present disclosure can also be applied. In this case, a structure in which a terminal has all or part of the functions of an access network device can also be provided.

[0033] In some embodiments, a terminal can be replaced with an access network device, a core network device, or a network device. In this case, a structure in which an access network device, a core network device, or a network device has all or part of the functions of a terminal can also be provided.

[0034] Figure 1 is a schematic architecture diagram of a communication system according to an example embodiment. As shown in FIG. 1, the communication system includes terminals 100, a base station 200, and a core network device 300. The terminal 100, the base station 200, and the core network device 300 can be connected to each other through a wired / wireless network or directly through a D2D / V2X connection. Figure 1As shown, the communication system 100 can include a terminal device 101, a network device 102. The network device 102 can include at least one of an access network device and a core network device.

[0035] In some embodiments, the terminal device 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a Pad, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, and the like, but is not limited thereto.

[0036] In some embodiments, the access network device is at least one of a node or device that accesses a terminal to a wireless network, for example, an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a wireless fidelity (WiFi) system, and the like, but is not limited thereto.

[0037] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0038] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, and some of the protocol layers are controlled by the CU, and the remaining or all of the protocol layers are distributed in the DU and controlled by the CU, but not limited thereto.

[0039] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups including all or part of one or more network elements. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next-generation core (NGC), for example.

[0040] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed by the embodiments of the present disclosure. Those skilled in the art can know that the technical solutions proposed by the embodiments of the present disclosure are also applicable to similar technical problems as the system architecture evolves and new business scenarios appear.

[0041] The following embodiments of the present disclosure can be applied to Figure 1 The communication system 100 shown is an example, and the communication system can include Figure 1 The communication system 100 shown is an example, and the communication system can include Figure 1 The communication system 100 shown is an example, and the communication system can include Figure 1 The communication system 100 shown is an example, and the communication system can include

[0042] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0043] Figure 2 is a flowchart of a communication method according to an exemplary embodiment, as shown in Figure 2 The communication method of the present embodiment includes the following steps.

[0044] S201, receiving target data sent by a network device.

[0045] It should be noted that the execution subject of the communication method of the embodiments of the present disclosure includes a terminal device, a chip, a chip system, a processor, and the like. The communication method of the embodiments of the present disclosure can be executed by the communication apparatus of the embodiments of the present disclosure, for example, the communication apparatus of the embodiments of the present disclosure can be configured in a terminal device to execute the communication method of the embodiments of the present disclosure.

[0046] The communication method of the embodiments of the present disclosure will be described below taking the terminal device as an example of the execution subject.

[0047] It should be noted that the feedback mode of the HARQ (Hybrid Automatic Repeat reQuest) in the embodiments of the present disclosure is only to feed back NACK (Negative ACKnowledgement), and when the terminal device fails to receive data, that is, the HARQ feedback information is NACK, the terminal device sends NACK to the network device, otherwise, when the terminal device successfully receives data, that is, the HARQ feedback information is ACK (Acknowledgement), the terminal device does not perform HARQ feedback.

[0048] It should be noted that the communication mode between the terminal device and the network device is not limited too much, for example, it can include MBS (Multicase Broadcast Services), unicast, multicast, and the like. The target data is not limited too much.

[0049] In an implementation, the target data is carried by a PDSCH (Physical Downlink Shared Channel).

[0050] In an implementation, before receiving the target data sent by the network device, the method further includes receiving scheduling data of the target data sent by the network device. The scheduling data of the target data is not limited too much, for example, it can include DCI (Downlink Control Information), for example, it can include a channel carrying the target data, time domain resources and frequency domain resources occupied by the target data, HARQ configuration information, a modulation mode, a demodulation mode, and the like.

[0051] In some examples, the scheduling data of the target data is carried by a PDCCH (Physical Downlink Control Channel).

[0052] S202, identifying whether the feedback moment of the HARQ corresponding to the target data is in a target time slot range, wherein the target time slot range includes a measurement gap GAP and N continuous uplink time slots after the measurement GAP, N being a positive integer.

[0053] If yes, the feedback moment is in the target time slot range, step S203 is performed.

[0054] S203, determining that the target data is not successfully received.

[0055] It should be noted that the measurement GAP in the target time slot range refers to the measurement GAP in the uplink time slot, and the N continuous uplink time slots after the measurement GAP refer to the 1st to Nth uplink time slots after the measurement GAP in the uplink time slot. The measurement GAP and N are not limited too much, for example, the measurement GAP is 5 continuous time slots, and N = 2. For example, as shown in FIG. 2, the measurement GAP exists in the uplink time slot and the downlink time slot. Figure 3

[0056] For example, as shown in FIG. 3, in order to overcome the signal propagation delay and ensure that the uplink data can arrive at the network device on time, the terminal device can send the uplink data in advance by TA (Timing Advance). Figure 3 Figure 3 In the example shown in FIG. 3, the TA is two time slots, the measurement GAP in the uplink time slot is the uplink time slot numbered M-4 to M, N = 2, and the 2 continuous uplink time slots after the measurement GAP are the uplink time slots numbered M+1 to M+2. Therefore, the target time slot range is the uplink time slots numbered M-4 to M+2.

[0057] In the related art, if the feedback moment is in the measurement GAP, the terminal device does not perform HARQ feedback, and if the feedback moment is in the N continuous uplink time slots after the measurement GAP, the terminal device needs to determine whether it can perform HARQ feedback. For example, if the terminal device does not perform inter-frequency measurement in the measurement GAP, and / or the N continuous uplink time slots after the measurement GAP do not overlap with the measurement GAP of the network device, the terminal device performs HARQ feedback in the N continuous uplink time slots after the measurement GAP, and if the above conditions are not met, the terminal device does not perform HARQ feedback in the N continuous uplink time slots after the measurement GAP.

[0058] ​​In the related art, in the case that the feedback mode of the HARQ of the terminal device is only to feed back NACK, if the feedback moment is within the target time slot range and the terminal device does not successfully receive the data, if the terminal device does not perform the HARQ feedback, the network device does not receive the NACK, considers that the terminal device successfully receives the data, cannot trigger the retransmission mechanism of the MAC (Media Access Control) layer, causes the MAC layer data transmission to fail and the service to terminate, and triggers the retransmission mechanism of the higher layer, such as the RLC (Radio Link Control) layer, and the transmission delay is large.

[0059] In the scheme, in the case that the feedback mode of the HARQ of the terminal device is only to feed back NACK, if the feedback moment is within the target time slot range, the terminal device directly determines that the data is not successfully received, so as to trigger the retransmission mechanism of the MAC layer, improves the success rate of the MAC layer data transmission, and does not trigger the retransmission mechanism of the higher layer, thereby reducing the transmission delay.

[0060] In an implementation, after determining that the target data is not successfully received, the method further includes not performing the HARQ feedback at the feedback moment, and starting a first RTT (Round Trip Time) timer, and if the first RTT timer expires, starting a first retransmission timer.

[0061] In the related art, if the feedback moment is within the continuous N uplink time slots after the measurement GAP, the terminal device needs to determine whether the HARQ feedback can be performed, however, in the scheme, if the feedback moment is within the target time slot range, the terminal device does not need to determine whether the HARQ feedback can be performed, and can directly determine that the HARQ feedback does not need to be performed at the feedback moment, which is simple and easy to implement.

[0062] It can be understood that, in the scheme, after determining that the target data is not successfully received, the first RTT timer is started, and if the first RTT timer expires, since it is determined that the target data is not successfully received, the first retransmission timer is started.

[0063] It can be understood that, if the first RTT timer expires, the first RTT timer is closed.

[0064] In an implementation, the method further includes, if the feedback moment is within the target time slot range, not processing the target data, wherein the processing includes decoding. It should be noted that decoding is also called decoding. Thus, if the feedback moment is within the target time slot range, the target data is not decoded or processed, the amount of data processed by the terminal device is reduced, the computing resources of the terminal device are saved, the energy consumption is saved, and the endurance time of the terminal device is prolonged.

[0065] In some examples, the processing further includes demodulation, checking, decryption, and the like.

[0066] In an embodiment, the method further comprises closing the receiving radio frequency channel during running of the first RTT timer, and opening the receiving radio frequency channel during running of the first retransmission timer. In this way, the receiving radio frequency channel can be closed during running of the first RTT timer, so as to save energy consumption and prolong the endurance time of the terminal device, and the receiving radio frequency channel can be opened during running of the first retransmission timer, so as to listen to the retransmission data sent by the network device.

[0067] In some examples, before closing the receiving radio frequency channel, the method further comprises identifying that there is no downlink service during running of the first RTT timer, and / or a quality parameter of a downlink channel carrying the retransmission data meets a set condition. For example, the downlink channel carrying the retransmission data can include a PDSCH, and the quality parameter of the downlink channel is not limited, for example, can include signal strength, SNR (Signal-to-Noise Ratio), BER (Bit Error Rate), etc. The set condition is not limited, for example, can include that the signal strength is greater than a first set threshold, and / or the SNR is greater than a second set threshold, and / or the BER is less than a third set threshold, etc.

[0068] In an embodiment, the method further comprises listening to the retransmission data sent by the network device during running of the first retransmission timer. For example, the retransmission data is carried by a PDSCH.

[0069] In some examples, before listening to the retransmission data sent by the network device, the method further comprises listening to scheduling data of the retransmission data sent by the network device. The related content of the scheduling data of the retransmission data can refer to the related content of the scheduling data of the target data, which will not be repeated here.

[0070] In an embodiment, during running of the first retransmission timer, it is determined that the terminal device is in a DRX (Discontinuous Reception) active state.

[0071] The communication method provided by the embodiment of the present disclosure is used for a terminal device whose HARQ feedback mode is only NACK feedback, and the terminal device receives target data sent by a network device, and identifies whether a feedback time of the HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer. If the feedback time is within the target time slot range, it is determined that the target data is not successfully received. Thus, in the case that the HARQ feedback mode of the terminal device is only NACK feedback, if the feedback time is within the target time slot range, it is directly determined that the data is not successfully received, so as to trigger the retransmission mechanism of the MAC layer, improve the success rate of the MAC layer data transmission, and avoid triggering the retransmission mechanism of a higher layer, thereby reducing the transmission delay.

[0072] Figure 4 Fig. 2 is a flowchart of a communication method according to another exemplary embodiment, as shown in Fig. 2, the communication method of the embodiment of the present disclosure comprises the following steps. Figure 4

[0073] S401, receiving target data sent by a network device.

[0074] S402, identifying whether a feedback time of HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer.

[0075] If yes, that is, the feedback time is within the target time slot range, step S403 is performed; if no, that is, the feedback time is not within the target time slot range, step S406 is performed.

[0076] S403, determining that the target data is not successfully received.

[0077] S404, not performing HARQ feedback at the feedback time, and starting a first round trip time RTT timer.

[0078] S405, starting a first retransmission timer if the first RTT timer is timed out.

[0079] The related content of steps S401-S405 can be referred to the above embodiment, and will not be described here.

[0080] S406, identifying whether the target data is successfully received.

[0081] If yes, that is, the target data is successfully received, step S407 is performed; if no, that is, the target data is not successfully received, step S409 is performed.

[0082] ​It should be noted that the identification of whether the target data is successfully received can be implemented by using any method for identifying whether target data is successfully received in the related art, and will not be further limited here.

[0083] In an implementation, the identification of whether the target data is successfully received includes identification of whether the target data is received, and if the target data is not received, identification of that the target data is not successfully received.

[0084] In an implementation, the identification of whether the target data is successfully received includes decoding of the target data to obtain a decoding result of the target data, and identification of whether the target data is successfully received based on the decoding result of the target data. For example, the decoding result of the target data can be checked, if the decoding result of the target data passes the check, it is identified that the target data is successfully received, and if the decoding result of the target data does not pass the check, it is identified that the target data is not successfully received. The check method is not limited, for example, it can include CRC (Cyclic Redundancy Check, cyclic redundancy check).

[0085] S407, no HARQ feedback is performed at the feedback moment, and a first RTT timer is started.

[0086] S408, if the first RTT timer expires, the first retransmission timer is continued to be closed.

[0087] It can be understood that if the feedback moment is not within the target time slot range and the target data is successfully received, no HARQ feedback is performed at the feedback moment, and the first RTT timer is started. If the first RTT timer expires, since it has been determined that the target data is successfully received, the first retransmission timer is continued to be closed.

[0088] In an implementation, after the first retransmission timer is continued to be closed, it further includes receiving next to-be-transmitted data of the target data sent by the network device.

[0089] S409, a NACK is sent to the network device at the feedback moment, and the first RTT timer is started.

[0090] S410, if the first RTT timer expires, the first retransmission timer is started.

[0091] It can be understood that if the feedback moment is not within the target time slot range and the target data is not successfully received, a NACK is sent to the network device at the feedback moment, and the first RTT timer is started. If the first RTT timer expires, since it has been determined that the target data is not successfully received, the first retransmission timer is started.

[0092] The communication method provided by the embodiment of the present disclosure, in the case that the feedback mode of the HARQ of the terminal device is only to feed back NACK, if the feedback moment is not within the target time slot range, it is identified whether the target data is successfully received, if the target data is not successfully received, a NACK is sent to the network device at the feedback moment, and a first RTT timer is started, if the first RTT timer is timed out, a first retransmission timer is started, so as to trigger the retransmission mechanism of the MAC layer, otherwise, if the target data is successfully received, no HARQ feedback is performed at the feedback moment, and the first RTT timer is started, if the first RTT timer is timed out, the first retransmission timer is continued to be closed, and the retransmission mechanism of the MAC layer does not need to be triggered.

[0093] Figure 5 Fig. 1 is a flow chart of a communication method according to another exemplary embodiment, as shown in Figure 5 The communication method of the embodiment of the present disclosure comprises the following steps.

[0094] S501, target data is sent to the terminal device.

[0095] It should be noted that the execution subject of the communication method of the embodiment of the present disclosure includes a network device, a chip, a chip system, a processor, etc. The communication method of the embodiment of the present disclosure can be executed by the communication device of the embodiment of the present disclosure, for example, the communication device of the embodiment of the present disclosure can be configured in the network device to execute the communication method of the embodiment of the present disclosure.

[0096] The communication method of the embodiment of the present disclosure will be described below taking the network device as an example.

[0097] It should be noted that the feedback mode of the HARQ of the terminal device in the embodiment of the present disclosure is only to feed back NACK.

[0098] In an implementation, the target data is sent to the terminal device, which comprises sending the target data to the terminal device through a PDSCH, that is, the target data is carried by the PDSCH.

[0099] In an implementation, before the target data is sent to the terminal device, the scheduling data of the target data is further sent to the terminal device. For example, the scheduling data of the target data can be sent to the terminal device through a PDCCH, that is, the scheduling data of the target data is carried by the PDCCH.

[0100] S502, it is identified whether the feedback moment of the HARQ corresponding to the target data is within the target time slot range, wherein the target time slot range comprises a measurement GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer.

[0101] If yes, that is, the feedback moment is within the target time slot range, step S503 is performed.

[0102] S503, determine that the terminal device does not successfully receive the target data.

[0103] In an embodiment, N=2.

[0104] In the related art, if the feedback time is in the measurement GAP, the terminal device does not perform HARQ feedback, and if the feedback time is in the continuous N uplink time slots after the measurement GAP, the terminal device needs to determine whether it can perform HARQ feedback, for example, if the terminal device does not perform inter-frequency measurement in the measurement GAP, and / or the continuous N uplink time slots after the measurement GAP do not overlap with the measurement GAP of the network device, the terminal device performs HARQ feedback in the continuous N uplink time slots after the measurement GAP, and if the above conditions are not met, the terminal device does not perform HARQ feedback in the continuous N uplink time slots after the measurement GAP.

[0105] In the related art, in the case that the feedback mode of the terminal device HARQ is only to feed back NACK, if the feedback time is in the target time slot range and the terminal device does not successfully receive the data, if the terminal device does not perform HARQ feedback, the network device does not receive NACK, and considers that the terminal device successfully receives the data, cannot trigger the retransmission mechanism of the MAC layer, causes the MAC layer data transmission to fail and the service to terminate, and triggers the retransmission mechanism of the higher layer, such as triggering the retransmission mechanism of the RLC layer, and the transmission delay is large.

[0106] In the present scheme, in the case that the feedback mode of the terminal device HARQ is only to feed back NACK, if the feedback time is in the target time slot range, it is directly determined that the terminal device does not successfully receive the data, so as to trigger the retransmission mechanism of the MAC layer, improve the success rate of the MAC layer data transmission, and will not trigger the retransmission mechanism of the higher layer, thereby reducing the transmission delay.

[0107] In an embodiment, after determining that the terminal device does not successfully receive the target data, the method further comprises starting a second RTT timer, and starting a second retransmission timer if the second RTT timer expires. It can be understood that in the present scheme, after determining that the terminal device does not successfully receive the target data, the second RTT timer is started, and if the second RTT timer expires, the second retransmission timer is started since it has been determined that the terminal device does not successfully receive the target data.

[0108] It can be understood that if the second RTT timer expires, the second RTT timer is closed.

[0109] In an embodiment, the method further comprises sending retransmission data to the terminal device during the running of the second retransmission timer. For example, the retransmission data can be sent to the terminal device through PDSCH.

[0110] In some cases, prior to sending retransmitted data to the terminal device, scheduling data for sending retransmitted data to the terminal device is also included. For example, scheduling data for sending retransmitted data to the terminal device can be sent via PDCCH.

[0111] In one implementation, the method further includes determining that the terminal device is in DRX active state during the operation of the second retransmission timer.

[0112] The communication method provided in the embodiments of this disclosure uses a terminal device's HARQ feedback mode of only providing NACK feedback. Target data is sent to the terminal device, and the system identifies whether the feedback time of the HARQ corresponding to the target data is within a target time slot range. The target time slot range includes the measurement gap and N consecutive uplink time slots after the measurement gap, where N is a positive integer. If the feedback time is within the target time slot range, it is determined that the terminal device has not successfully received the target data. Therefore, when the terminal device's HARQ feedback mode is only providing NACK feedback, if the feedback time is within the target time slot range, it is directly determined that the terminal device has not successfully received the data, thus triggering the MAC layer's retransmission mechanism. This improves the success rate of MAC layer data transmission, avoids triggering higher-layer retransmission mechanisms, and reduces transmission latency.

[0113] Figure 6 This is a flowchart illustrating a communication method according to another exemplary embodiment, such as... Figure 6 As shown, the communication method of this disclosure includes the following steps.

[0114] S601 sends target data to the terminal device.

[0115] S602, identify whether the feedback time of the HARQ corresponding to the target data is within the target time slot range, wherein the target time slot range includes the measurement gap and the N consecutive uplink time slots after the measurement gap, where N is a positive integer.

[0116] If yes, meaning the feedback time is within the target time slot range, proceed to step S603; if no, meaning the feedback time is not within the target time slot range, proceed to step S606.

[0117] S603, indicating that the terminal device has failed to receive the target data.

[0118] S604, start the second RTT timer.

[0119] S605: If the second RTT timer times out, start the second retransmission timer.

[0120] For details regarding steps S601-S605, please refer to the above embodiments, which will not be repeated here.

[0121] S606, start a second RTT timer, and identify whether the NACK sent by the terminal device is received.

[0122] S607, if the second RTT timer is expired and the NACK sent by the terminal device is received, start a second retransmission timer.

[0123] It can be understood that if the feedback time is not in the target time slot range, the second RTT timer is started, and it is identified whether the NACK sent by the terminal device is received. If the second RTT timer is expired and the NACK sent by the terminal device is received, it indicates that the terminal device does not successfully receive the target data, and then the second retransmission timer is started.

[0124] S608, if the second RTT timer is expired and the NACK sent by the terminal device is not received, continue to close the second retransmission timer.

[0125] It can be understood that if the feedback time is not in the target time slot range, the second RTT timer is started, and it is identified whether the NACK sent by the terminal device is received. If the second RTT timer is expired and the NACK sent by the terminal device is not received, it indicates that the terminal device successfully receives the target data, and then the second retransmission timer is continued to be closed.

[0126] In an embodiment, after the second retransmission timer is continued to be closed, the communication device further comprises sending next data to be transmitted of the target data to the terminal device.

[0127] The communication method provided by the embodiment of the disclosure, in the case that the feedback mode of the HARQ of the terminal device is only to feed back the NACK, if the feedback time is not in the target time slot range, the second RTT timer is started, and it is identified whether the NACK sent by the terminal device is received. If the second RTT timer is expired and the NACK sent by the terminal device is received, the second retransmission timer is started, so as to trigger the retransmission mechanism of the MAC layer. If the second RTT timer is expired and the NACK sent by the terminal device is not received, the second retransmission timer is continued to be closed, and the retransmission mechanism of the MAC layer does not need to be triggered.

[0128] Figure 7 is a block diagram of a communication device according to an exemplary embodiment. The feedback mode of the HARQ of the terminal device is only to feed back the NACK. Referring to Figure 7 , the communication device 700 of the embodiment of the disclosure comprises a receiving module 701, an identifying module 702 and a determining module 703.

[0129] The receiving module 701 is configured to perform receiving the target data sent by the network device.

[0130] The identification module 702 is configured to identify whether the feedback time of the HARQ corresponding to the target data is in a target time slot range, wherein the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer.

[0131] The determination module 703 is configured to determine that the target data is unsuccessfully received if the feedback time is in the target time slot range.

[0132] In an embodiment of the present disclosure, after the determination that the target data is unsuccessfully received, the determination module 703 is further configured to perform: not performing HARQ feedback at the feedback time, and starting a first round trip time (RTT) timer; and starting a first retransmission timer if the first RTT timer expires.

[0133] In an embodiment of the present disclosure, the determination module 703 is further configured to perform: not processing the target data if the feedback time is in the target time slot range, wherein the processing includes decoding.

[0134] In an embodiment of the present disclosure, the identification module 702 is further configured to identify whether the target data is successfully received if the feedback time is not in the target time slot range.

[0135] In an embodiment of the present disclosure, after the identification of whether the target data is successfully received, the identification module 702 is further configured to perform: sending a negative acknowledgement (NACK) to the network device at the feedback time if the target data is unsuccessfully received, and starting a first RTT timer; and starting a first retransmission timer if the first RTT timer expires.

[0136] In an embodiment of the present disclosure, after the identification of whether the target data is successfully received, the identification module 702 is further configured to perform: not performing HARQ feedback at the feedback time if the target data is successfully received, and starting a first RTT timer; and continuing to close the first retransmission timer if the first RTT timer expires.

[0137] In an embodiment of the present disclosure, the identification module 702 is further configured to perform: decoding the target data to obtain a decoding result of the target data; and identifying whether the target data is successfully received based on the decoding result of the target data.

[0138] In an embodiment of the disclosure, the apparatus 700 further includes a processing module configured to perform: turning off a receiving radio frequency channel during running of the first RTT timer; and turning on the receiving radio frequency channel during running of the first retransmission timer.

[0139] In an embodiment of the disclosure, the receiving module 701 is further configured to perform: listening to retransmission data sent by the network device during running of the first retransmission timer.

[0140] In an embodiment of the disclosure, the determining module 703 is further configured to perform: determining that the terminal device is in a discontinuous reception (DRX) active state during running of the first retransmission timer.

[0141] In an embodiment of the disclosure, N = 2.

[0142] As to the apparatus in the above embodiments, the specific manners in which various modules perform operations have been described in detail in the embodiments of the method, and thus will not be described here in detail.

[0143] The communication apparatus provided by the embodiments of the disclosure, the feedback mode of the HARQ of the terminal device is only NACK feedback, target data sent by a network device is received, and it is identified whether a feedback moment of the HARQ corresponding to the target data is in a target time slot range, where the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, N is a positive integer, and if the feedback moment is in the target time slot range, it is determined that the target data is not successfully received. Thus, in the case where the feedback mode of the HARQ of the terminal device is only NACK feedback, if the feedback moment is in the target time slot range, it is directly determined that the data is not successfully received, so as to trigger a retransmission mechanism of a MAC layer, and the success rate of data transmission of the MAC layer is improved, and a retransmission mechanism of a higher layer is not triggered, and transmission delay is reduced.

[0144] Figure 8 is a block diagram of another communication apparatus according to an exemplary embodiment. The feedback mode of the HARQ of the terminal device is only NACK feedback. Referring to Figure 8 , the communication apparatus 800 of the embodiments of the disclosure includes a sending module 801, an identifying module 802, and a determining module 803.

[0145] The sending module 801 is configured to perform sending target data to the terminal device.

[0146] The identifying module 802 is configured to identify whether the feedback moment of the HARQ corresponding to the target data is in a target time slot range, wherein the target time slot range comprises a measurement GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer.

[0147] The determining module 803 is configured to determine that the terminal device does not successfully receive the target data if the feedback moment is in the target time slot range.

[0148] In an embodiment of the present disclosure, after the determining module 803 determines that the terminal device does not successfully receive the target data, the determining module 803 is further configured to start a second RTT timer, and start a second retransmission timer if the second RTT timer expires.

[0149] In an embodiment of the present disclosure, the identifying module 802 is further configured to start a second RTT timer if the feedback moment is not in the target time slot range, and identify whether a NACK sent by the terminal device is received.

[0150] In an embodiment of the present disclosure, the identifying module 802 is further configured to start a second retransmission timer if the second RTT timer expires and the NACK sent by the terminal device is received.

[0151] In an embodiment of the present disclosure, the identifying module 802 is further configured to continue to close the second retransmission timer if the second RTT timer expires and the NACK sent by the terminal device is not received.

[0152] In an embodiment of the present disclosure, the sending module 801 is further configured to send retransmission data to the terminal device during running of the second retransmission timer.

[0153] In an embodiment of the present disclosure, the determining module 803 is further configured to determine that the terminal device is in a DRX active state during running of the second retransmission timer.

[0154] In an embodiment of the present disclosure, N=2.

[0155] As to the apparatus in the above-mentioned embodiments, the specific manners in which various modules perform operations have been described in details in the embodiments of the method, and will not be described in details here.

[0156] The embodiment of the present disclosure provides a communication device, a feedback mode of HARQ of a terminal device is only NACK, target data is sent to the terminal device, and whether a feedback moment of the HARQ corresponding to the target data is in a target time slot range is identified, wherein the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, N is a positive integer, and if the feedback moment is in the target time slot range, it is determined that the terminal device does not successfully receive the target data. Therefore, in the case that the feedback mode of the HARQ of the terminal device is only NACK, if the feedback moment is in the target time slot range, it is directly determined that the terminal device does not successfully receive the data, so as to trigger the retransmission mechanism of the MAC layer, improve the success rate of the MAC layer data transmission, and the retransmission mechanism of the higher layer is not triggered, and the transmission delay is reduced.

[0157] Figure 9 A structural schematic diagram of a communication device provided by the embodiment of the present disclosure is provided. The communication device 900 can be a network device (for example, an access network device, a core network device, etc.), can be a terminal (for example, a user equipment, etc.), can be a chip, a chip system, or a processor supporting the network device to implement any of the above methods, and can be a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 900 can be used to implement the method described in the above method embodiment, and specific implementation can be referred to the description in the above method embodiment.

[0158] As shown in Figure 9 The communication device 900 includes one or more processors 901. The processor 901 can be a general-purpose processor or a special-purpose processor, for example, can be a baseband processor or a central processor. The baseband processor can be used to process a communication protocol and communication data, and the central processor can be used to control a communication device (for example, a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process data of the program. The processor 901 is used to call instructions to make the communication device 900 execute any of the above methods.

[0159] In some embodiments, the communication device 900 further includes one or more memories 902 for storing instructions. Optionally, all or part of the memory 902 can also be outside the communication device 900.

[0160] In some embodiments, the communication device 900 further includes one or more transceivers 903. When the communication device 900 includes one or more transceivers 903, the communication steps in the above method are performed by the transceiver 903, and other steps are performed by the processor 901.

[0161] In some embodiments, the transceiver can include a receiver and a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0162] Optionally, the communication device 900 further includes one or more interface circuits 904 connected with the memory 902, which can be used to receive signals from the memory 902 or other devices, and can be used to send signals to the memory 902 or other devices. For example, the interface circuit 904 can read the instructions stored in the memory 902 and send the instructions to the processor 901.

[0163] The communication device 900 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 900 described in the present disclosure is not limited thereto, and the structure of the communication device 900 can not be limited by Figure 9 The communication device can be a stand-alone device or can be part of a larger device. For example, the communication device can be: (1) a stand-alone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, intelligent terminal device, cellular phone, wireless device, handset, mobile unit, vehicle-mounted device, network device, cloud device, artificial intelligence device, etc.; (6) other, etc.

[0164] Figure 10 is a block diagram of a chip according to an exemplary embodiment.

[0165] As shown in Figure 10 The chip 1000 includes one or more interface circuits 1002 and one or more processors 1001; the interface circuit 1002 is used to receive signals and send signals to the processor 1001, and the signals include computer instructions stored in the memory, when the processor 1001 executes the computer instructions, the chip 1000 executes the steps of the image processing method provided by the present disclosure.

[0166] The processor 1001 and the interface circuit 1002 can be interconnected by a line.

[0167] The chip 1000 further includes a memory 1003, all or part of the memory 1003 can be outside the chip 1000.

[0168] The interface circuit 1002 is connected with the memory 1003, and the interface circuit 1002 can be used to receive signals from the memory 1003 or other devices, and the interface circuit 1002 can be used to send signals to the processor 1001 or other devices. For example, the interface circuit 1002 can read instructions stored in the memory 1003 and send the instructions to the processor 1001.

[0169] The interface circuit 1002 can obtain data, program instructions and / or information in the internal storage area of the chip 1000; and can also obtain data, program instructions and / or information outside the chip 1000.

[0170] It should be noted that the terms interface circuit, interface, transceiver pin, transceiver, etc. can be replaced with each other.

[0171] The present disclosure also proposes a storage medium, and the storage medium stores instructions, and when the instructions run on the communication device 900, the communication device 900 executes any one of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0172] The present disclosure also proposes a program product, and the program product is executed by the communication device 900, so that the communication device 900 executes any one of the above methods. Optionally, the program product is a computer program product.

[0173] The present disclosure also proposes a computer program, and when the computer program runs on a computer, the computer executes any one of the above methods.

[0174] In the embodiments described above, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded on a computer and executed, all or part of the processes or functions described in the embodiments of the present disclosure are produced. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer programs can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as high-density digital video disc (digital video disc, DVD)), or semiconductor media (such as solid state disk (solid state disk, SSD)) and the like.

[0175] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. A skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0176] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0177] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: A feedback mode of a hybrid automatic repeat request (HARQ) of a terminal device is only negative acknowledgement (NACK) feedback, and the method comprises: receiving target data sent by a network device; identifying whether a feedback time of the HARQ corresponding to the target data is in a target time slot range, wherein the target time slot range comprises a measurement gap (GAP) and N continuous uplink time slots after the measurement GAP, and N is a positive integer; if the feedback time is in the target time slot range, determining that the target data is not successfully received; not performing HARQ feedback at the feedback time, and starting a first round trip time (RTT) timer; if the first RTT timer expires, starting a first retransmission timer.

2. The method of claim 1, wherein, The method further comprises: if the feedback time is in the target time slot range, not processing the target data, wherein the processing comprises decoding.

3. The method of claim 1, wherein, The method further comprises: if the feedback time is not in the target time slot range, identifying whether the target data is successfully received.

4. The method of claim 3, wherein, After the identification of whether the target data is successfully received, the method further comprises: if the target data is not successfully received, sending NACK to the network device at the feedback time, and starting the first RTT timer; if the first RTT timer expires, starting the first retransmission timer.

5. The method of claim 3, wherein, After the identification of whether the target data is successfully received, the method further comprises: if the target data is successfully received, not performing HARQ feedback at the feedback time, and starting the first RTT timer; if the first RTT timer expires, continuing to close the first retransmission timer.

6. The method of claim 3, wherein, The identification of whether the target data is successfully received comprises: decoding the target data to obtain a decoding result of the target data; based on the decoding result of the target data, identifying whether the target data is successfully received.

7. The method according to claim 1 or 4, characterized in that, The method further comprises: during running of the first RTT timer, closing a receiving radio frequency channel; during running of the first retransmission timer, opening the receiving radio frequency channel.

8. The method of claim 1 or 4, wherein, The method further comprises: during running of the first retransmission timer, listening to retransmission data sent by the network device.

9. The method of claim 1 or 4, wherein, The method further comprises: during running of the first retransmission timer, determining that the terminal device is in a discontinuous reception (DRX) active state.

10. A communication method characterized by comprising: A feedback mode of a HARQ of a terminal device is only NACK feedback, and the method comprises: sending target data to the terminal device; identifying whether a feedback time of the HARQ corresponding to the target data is in a target time slot range, wherein the target time slot range comprises a measurement GAP and N continuous uplink time slots after the measurement GAP, and N is a positive integer; if the feedback time is in the target time slot range, determining that the terminal device does not successfully receive the target data; starting a second RTT timer; if the second RTT timer expires, starting a second retransmission timer.

11. The method of claim 10, wherein, The method further comprises: if the feedback time is not in the target time slot range, starting the second RTT timer, and identifying whether NACK sent by the terminal device is received.

12. The method of claim 11, wherein, The method further comprises: If the second RTT timer expires and a NACK sent by the terminal device is received, a second retransmission timer is started.

13. The method of claim 11, wherein, The method further includes: If the second RTT timer expires and a NACK sent by the terminal device is not received, the second retransmission timer is continued to be closed.

14. The method of claim 10 or 12, wherein, The method further includes: During running of the second retransmission timer, retransmission data is sent to the terminal device.

15. The method of claim 10 or 12, wherein, The method further includes: During running of the second retransmission timer, it is determined that the terminal device is in a DRX active state.

16. A communications device, characterized by The feedback mode of HARQ of a terminal device is only NACK feedback, and the apparatus includes: A receiving module configured to perform receiving target data sent by a network device; An identifying module configured to perform identifying whether a feedback time of HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, N being a positive integer; A determining module configured to perform, if the feedback time is within the target time slot range, determining that the target data is not successfully received; not performing HARQ feedback at the feedback time, and starting a first round trip time (RTT) timer; and starting a first retransmission timer if the first RTT timer expires.

17. A communications device, characterized by The feedback mode of HARQ of a terminal device is only NACK feedback, and the apparatus includes: A sending module configured to perform sending target data to the terminal device; An identifying module configured to perform identifying whether a feedback time of HARQ corresponding to the target data is within a target time slot range, wherein the target time slot range includes a measurement GAP and N continuous uplink time slots after the measurement GAP, N being a positive integer; A determining module configured to perform, if the feedback time is within the target time slot range, determining that the terminal device does not successfully receive the target data; starting a second RTT timer; and starting a second retransmission timer if the second RTT timer expires.

18. A communication device, characterized by comprising: one or more processors; wherein the processor is configured to invoke instructions to cause the communication device to perform the method of any one of claims 1-15.

19. A storage medium, the storage medium storing instructions, wherein, The instructions, when executed on the communication device, cause the communication device to perform the method of any one of claims 1-15.

20. A chip, characterized by comprising one or more interface circuits and one or more processors; the interface circuit is configured to receive a signal and send the signal to the processor, the signal comprising computer instructions stored in a memory, when the processor executes the computer instructions, causing the chip to perform the steps of the method of any one of claims 1-15.

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