Patent Description:
With constant emergence of novel Internet applications of new-generation Augmented Reality (AR), Virtual Reality (VR), vehicle-to-vehicle communication and the like, higher requirements have been made to wireless communication technologies, which promote constant evolution of the wireless communication technologies to meet the requirements of the applications. At present, a cellular mobile communication technology is in an evolution stage of a new-generation technology. An important characteristic of the new-generation technology is that flexible configuration of multiple service types is supported. Different service types have different requirements on a wireless communication technology. For example, a main requirement of an enhanced Mobile Broad Band (eMBB) service type focuses on the aspects of high bandwidth, high rate and the like, a main requirement of an Ultra Reliable Low Latency Communication (URLLC) service type focuses on the aspects of relatively high reliability and low delay, and a main requirement of a massive Machine Type Communication (mMTC) service type focuses on the aspect of large connection number. Therefore, a new-generation wireless communication system requires a flexible and configurable design to support transmission of multiple service types.

In a wireless communication system, a time varying characteristic and multipath fading of a wireless channel may bring influence to signal transmission, resulting in a data transmission failure. For solving this problem, a HARQ mechanism is introduced into a conventional wireless communication system, and a sending side determines whether a data packet that has been sent is required to be resent according to a feedback of a receiving side about whether data is correctly received. In a conventional Long-Term Evolution (LTE) system, there is a timing relationship between time of transmission and Acknowledgement (ACK) or Negative Acknowledgement (NACK) feedback of data. Under a limit of a processing capability of UE in LTE, there are at least <NUM> milliseconds (ms) between time of transmission and ACK or NACK feedback of data. In an LTE system, HARQ feedback of a downlink data packet is synchronous. That is, there is a fixed timing relationship between transmission of the downlink data packet and uplink ACK or NACK feedback of the downlink data packet. HARQ feedback of an uplink data packet may be synchronous or asynchronous.

Along with enhancement of a capability of UE, the UE may have a higher processing capability. Under this circumstance, the UE may give an ACK or NACK feedback faster for received data to reduce a data transmission delay. This is important to some services with relatively high delay requirements such as a URLLC service. A conventional HARQ timing feedback manner is no more applicable to such a scenario.

<CIT> discloses a delaying transmission depending on transmission type and UE processing capabilities.

<NPL>, discloses the HARQ processing time, the HAQR process number, the signaling design for HARQ timing indication, the principles of HARQ-ACK multiplexing and HARQ-ACK bundling.

<NPL>, discloses timing relations and signaling of HARQ timing for NR.

In view of this, the present disclosure discloses a method and device for HARQ feedback indication, and a method and device for HARQ feedback, to support dynamical HARQ feedback of UE.

According to a first aspect of embodiments of the present disclosure, there is provided a method for HARQ feedback indication for applying to a base station, which is set forth in claim <NUM>.

In an embodiment, the uplink HARQ feedback indication information may be carried in an information field of the DCI, and a bit length of the information field may be a fixed value or may be determined based on the number of timing relationships included in the set of first timing relationships.

In an embodiment, in response to the UE does not support dynamic HARQ feedback, the uplink HARQ feedback indication information may be a fixed value, the fixed value may be in the set of first timing relationships, and the fixed value may be preset by a present system or configured by the base station.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for HARQ feedback for applying to UE, which is set forth in claim <NUM>.

According to a third aspect of the embodiments of the present disclosure, there is provided a device for HARQ feedback indication for applying to a base station, which is set forth in claim <NUM>.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a device for HARQ feedback for applying to UE, which is set forth in claim <NUM>.

The technical solutions provided in the embodiments of the present disclosure may have the following beneficial effects.

The uplink HARQ feedback indication information is generated for the present downlink data and the present downlink data and the DCI carrying the uplink HARQ feedback indication information are sent to the UE, to enable the UE to acquire the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data according to the uplink HARQ feedback indication information and the prestored set of first timing relationships, and send the uplink HARQ feedback information for the present downlink data according to the acquired timing relationship, so that the UE may implement dynamic HARQ feedback.

The uplink HARQ feedback indication information is obtained by parsing the received DCI, the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data is acquired according to the uplink HARQ feedback indication information and the prestored set of first timing relationships, and the uplink HARQ feedback information for the present downlink data is sent according to the acquired timing relationship, so that dynamic HARQ feedback is implemented.

The accompanying drawings, which are incorporated in and constitute a part of this description, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

<FIG> is a flowchart illustrating a method for HARQ feedback indication, according to an embodiment of the present disclosure. The embodiment is described from a base station side. As illustrated in <FIG>, the HARQ feedback indication method includes the following steps.

In S <NUM>, present downlink data is determined to be sent to UE.

In S102, uplink HARQ feedback indication information for the present downlink data is generated, a timing relationship indicated by the uplink HARQ feedback indication information being included in a set of first timing relationships between time-domain units where downlink data for the UE are located and time-domain units for uplink HARQ feedback of the downlink data.

A base station generates the uplink HARQ feedback indication information for the present downlink data, the uplink HARQ feedback indication information may be carried in an information field of DCI, and a bit length of the information field may be a fixed value and may also be determined based on the number of timing relationships included in the set of first timing relationships. For example, if the set of first timing relationships includes four timing relationships, the length of the information field is <NUM> bit.

In the embodiment, in response to the UE supports dynamic HARQ feedback, for different downlink data, the uplink HARQ feedback indication information may be different numerical values. In response to the UE does not support HARQ feedback, the uplink HARQ feedback indication information is a fixed value, the fixed value is a plurality of fixed values in the set of first timing relationships, and may be preset by a present system or configured by the base station.

In S103, the present downlink data and DCI carrying the uplink HARQ feedback indication information are sent to the UE.

The base station, after generating the uplink HARQ feedback indication information for the present downlink data, sends the present downlink data and the DCI carrying the uplink HARQ feedback indication information to the UE; and the UE, after receiving the DCI, acquires the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data according to the uplink HARQ feedback indication information obtained by parsing and the prestored set of first timing relationships, and sends uplink HARQ feedback information for the present downlink data.

According to the embodiment, the uplink HARQ feedback indication information is generated for the present downlink data and the present downlink data and the DCI carrying the uplink HARQ feedback indication information are sent to the UE, to enable the UE to acquire the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data according to the uplink HARQ feedback indication information and the prestored set of first timing relationships, and send the uplink HARQ feedback information of the present downlink data according to the acquired timing relationship, so that the UE may implement dynamic HARQ feedback.

<FIG> is a flowchart illustrating another method for HARQ feedback indication, according to an embodiment not being part of the present invention. As illustrated in <FIG>, based on the embodiment illustrated in <FIG>, the method for HARQ feedback indication may further include the following steps.

In S201, capability information reported by the UE is received.

In S202, in response to determining, according to the capability information, that the UE supports dynamic HARQ feedback, the set of first timing relationships is generated.

S201 and S202 are executed before S <NUM>.

In S203, the set of first timing relationships is sent to the UE.

According to the embodiment not being part of the invention, in response to determining that the UE supports dynamic HARQ feedback, the set of first timing relationships is generated, and the set of first timing relationships is sent to the UE, so that a condition is provided for generation of the uplink HARQ feedback indication information and sending of the uplink HARQ feedback information.

<FIG> is a flowchart illustrating another method for HARQ feedback indication, according to an embodiment of the present disclosure. As illustrated in <FIG>, based on the embodiment illustrated in <FIG>, the method for HARQ feedback indication may further include the following steps.

In S301, a set of second timing relationships between time-domain units where downlink data supported by a present system are located and time-domain units for uplink HARQ feedback of the downlink data is predefined, or the set of second timing relationships is notified to the UE through signaling.

The signaling includes RRC signaling, a MAC CE or physical-layer signaling.

In S302, the capability information reported by the UE is received.

In S303, in response to determining, according to the capability information, that the UE supports dynamic HARQ feedback, a generation rule for the set of first timing relationships is generated.

In S304, the generation rule is sent to the UE for generating, by the UE, the set of first timing relationships according to the generation rule and the set of second timing relationships.

The set of first timing relationships is a subset of the set of second timing relationships.

According to the embodiment, in response to determining that the UE supports dynamic HARQ feedback, the generation rule for the set of first timing relationships is generated and the generation rule for the set of first timing relationships is sent to the UE, to enable the UE to generate the set of first timing relationships according to the generation rule and the set of second timing relationships, so that a condition is provided for generation of the uplink HARQ feedback indication information and the uplink HARQ feedback information.

<FIG> is a flowchart illustrating a method for HARQ feedback, according to an embodiment of the present disclosure. The embodiment is described from UE side. As illustrated in <FIG>, the method for HARQ feedback includes the following steps.

In S401, present downlink data and DCI carrying uplink HARQ feedback indication information for the present downlink data are received from a base station, a timing relationship indicated by the uplink HARQ feedback indication information being included in a set of first timing relationships between time-domain units where downlink data for UE are located and time-domain units for uplink HARQ feedback of the downlink data.

The uplink HARQ feedback indication information may be carried in an information field of the DCI, and a bit length of the information field may be a fixed value and may also be determined based on the number of timing relationships included in the set of first timing relationships. For example, if the set of first timing relationships includes four timing relationships, the length of the information field is <NUM> bit.

In S402, the uplink HARQ feedback indication information is obtained by parsing the DCI.

In S403, a timing relationship between a time-domain unit where the present downlink data is located and a time-domain unit for uplink HARQ feedback of the present downlink data is acquired according to the uplink HARQ feedback indication information and the prestored set of first timing relationships.

There is made such a hypothesis that the set of first timing relationships is illustrated in Table <NUM>.

If the uplink HARQ feedback indication information is <NUM>, it may be acquired according to the uplink HARQ feedback indication information and the set of first timing relationships illustrated in Table <NUM> that the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data is two symbols.

In addition, it is to be noted that Table <NUM> is only an example of the set of first timing relationships and, during a practical application, another format, for example, a format illustrated in Table <NUM>, may also be adopted for the set of first timing relationships.

Since contents of the entries in Table <NUM> does not correspond to a content indicated by the information field, a corresponding relationship between the contents of the entries and the contents indicated by the information field may be predefined, or the base station may also notify the corresponding relationship between the contents of the entries and the contents indicated by the information field to the UE through signaling. For example, the corresponding relationship may be that contents <NUM>, <NUM>, <NUM> and <NUM> indicated by the information field correspond to the entries <NUM>, <NUM>, <NUM> and <NUM> in Table <NUM> respectively.

In S404, uplink HARQ feedback information for the present downlink data is sent according to the acquired timing relationship.

If the timing relationship is two symbols and the UE transmits the present downlink data on symbol <NUM>, the UE sends the uplink HARQ feedback information for the present downlink data on symbol <NUM>.

According to the embodiment, the uplink HARQ feedback indication information is obtained by parsing the received DCI, the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data is acquired according to the uplink HARQ feedback indication information and the prestored set of first timing relationships, and the uplink HARQ feedback information for the present downlink data is sent according to the acquired timing relationship, so that dynamic HARQ feedback is implemented.

<FIG> is a flowchart illustrating another method for HARQ feedback, according to an embodiment not being part of the present invention. As illustrated in <FIG>, the HARQ feedback method may further include the following steps.

In S501, capability information of the UE is reported to the base station.

In S502, the first timing relationship set sent by the base station according to the capability information is received and stored.

According to the embodiment not being part of the invention, the capability information of the UE is reported to the base station, and the base station, in response to determining according to the capability information that the UE supports dynamic HARQ feedback, generates the set of first timing relationships and sends the set of first timing relationships to the UE, so that a condition is provided for the UE to acquire the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data, and a condition is further provided for sending of the uplink HARQ feedback information.

<FIG> is a flowchart illustrating another method for HARQ feedback, according to an embodiment of the present disclosure. As illustrated in <FIG>, the method for HARQ feedback may further include the following steps.

In S601, a set of second timing relationships, which is predefined, or is received from the base station via signaling, between time-domain units where downlink data supported by a present system are located and time-domain units for uplink HARQ feedback of the downlink data is obtained.

In S602, the capability information of the UE is reported to the base station.

In S603, a generation rule, which is sent by the base station according to the capability information, for the set of first timing relationships is received.

In S604, the set of first timing relationships is generated according to the generation rule and the set of second timing relationships.

In S605, the set of first timing relationships is stored.

According to the embodiment, the set of second timing relationships is obtained, the generation rule, which is sent by the base station according to the capability information reported by the UE, for the set of first timing relationships is received, and the set of first timing relationships is generated according to the generation rule and the set of second timing relationships, so that a condition is provided for the UE to acquire the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data, and a condition is further provided for sending of the uplink HARQ feedback information.

<FIG> is a block diagram of a device for HARQ feedback indication, according to an embodiment. The device is positioned in a base station. As illustrated in <FIG>, the device includes a determination module <NUM>, a first generation module <NUM> and a first sending module <NUM>.

The determination module <NUM> is configured to determine present downlink data to be sent to UE.

The first generation module <NUM> is configured to generate uplink HARQ feedback indication information for the present downlink data determined by the determination module <NUM>, a timing relationship indicated by the uplink HARQ feedback indication information being included in a set of first timing relationships between time-domain units where downlink data for the UE are located and time-domain units for uplink HARQ feedback of the downlink data.

The base station generates the uplink HARQ feedback indication information for the present downlink data, the uplink HARQ feedback indication information may be carried in an information field of DCI, and a bit length of the information field may be a fixed value and may also be determined based on the number of timing relationships included in the set of first timing relationships. For example, if the set of first timing relationships includes four timing relationships, the length of the information field is <NUM> bit.

The first sending module <NUM> is configured to send the present downlink data and DCI carrying the uplink HARQ feedback indication information generated by the first generation module <NUM> to the UE.

According to the embodiment, the uplink HARQ feedback indication information is generated for the present downlink data, and the present downlink data and the DCI carrying the uplink HARQ feedback indication information are sent to the UE, to enable the UE to acquire the timing relationship between the time-domain unit where the present downlink data is located and the time-domain unit for uplink HARQ feedback of the present downlink data according to the uplink HARQ feedback indication information and the prestored set of first timing relationships, and send the uplink HARQ feedback information of the present downlink data according to the acquired timing relationship, so that the UE may implement dynamic HARQ feedback.

<FIG> is a block diagram of another device for HARQ feedback indication, according to an embodiment not being part of the invention. As illustrated in <FIG>, based on the embodiment illustrated in <FIG>, the device may further include a first receiving module <NUM>, a first determination generation module <NUM> and a second sending module <NUM>.

The first receiving module <NUM> is configured to receive capability information reported by the UE.

The first determination generation module <NUM> is configured to, in response to determining, according to the capability information received by the first receiving module <NUM>, that the UE supports dynamic HARQ feedback, generate the set of first timing relationships.

The second sending module <NUM> is configured to send the set of first timing relationships generated by the first determination generation module <NUM> to the UE.

<FIG> is a block diagram of another device for HARQ feedback indication, according to an embodiment. As illustrated in <FIG>, based on the embodiment illustrated in <FIG>, the device further includes a definition and notification module <NUM>, a second receiving module <NUM>, a second determination generation module <NUM> and a third sending module <NUM>.

The definition and notification module <NUM> is configured to predefine a set of second timing relationships between time-domain units where downlink data supported by a present system are located and time-domain units for uplink HARQ feedback of the downlink data, or notify the set of second timing relationships to the UE through signaling.

The second receiving module <NUM> is configured to receive the capability information reported by the UE.

The second determination generation module <NUM> is configured to, in response to determining, according to the capability information received by the second receiving module <NUM>, that the UE supports dynamic HARQ feedback, generate a generation rule for the set of first timing relationships.

The third sending module <NUM> is configured to send the generation rule generated by the second determination generation module <NUM> to the UE for generating, by the UE, the set of first timing relationships according to the generation rule and the set of second timing relationships defined or notified by the definition and notification module <NUM>.

<FIG> is a block diagram of a device for HARQ feedback, according to an embodiment. The device is positioned in UE. As illustrated in <FIG>, the device includes an information receiving module <NUM>, a parsing module <NUM>, an acquisition module <NUM> and a sending module <NUM>.

The information receiving module <NUM> is configured to receive present downlink data and DCI carrying uplink HARQ feedback indication information for the present downlink data from a base station, a timing relationship indicated by the uplink HARQ feedback indication information being included in a set of first timing relationships between time-domain units where downlink data for the UE are located and time-domain units for uplink HARQ feedback of the downlink data.

The parsing module <NUM> is configured to obtain the uplink HARQ feedback indication information by parsing the DCI received by the information receiving module <NUM>.

The acquisition module <NUM> is configured to acquire a timing relationship between a time-domain unit where the present downlink data is located and a time-domain unit for uplink HARQ feedback of the present downlink data according to the uplink HARQ feedback indication information obtained by the parsing module <NUM> and the prestored set of first timing relationships.

Since contents of the entries in Table <NUM> do not correspond to contents indicated by the information field, a corresponding relationship between the contents of the entries and the contents indicated by the information field may be predefined, or the base station may also notify the corresponding relationship between the contents of the entries and the contents indicated by the information field to the UE through signaling. For example, the corresponding relationship may be that contents <NUM>, <NUM>, <NUM> and <NUM> indicated by the information field correspond to the entries <NUM>, <NUM>, <NUM> and <NUM> in Table <NUM> respectively.

The sending module <NUM> is configured to send uplink HARQ feedback information for the present downlink data according to the timing relationship acquired by the acquisition module <NUM>.

<FIG> is a block diagram of another device for HARQ feedback, according to an embodiment not being part of the invention. As illustrated in <FIG>, based on the embodiment illustrated in <FIG>, the device may further include a first reporting module <NUM> and a receiving and storing module <NUM>.

The first reporting module <NUM> is configured to report capability information of the UE to the base station.

The receiving and storing module <NUM> is configured to receive and store the set of first timing relationships sent by the base station according to the capability information reported by the first reporting module <NUM>.

<FIG> is a block diagram of another device for HARQ feedback, according to an embodiment. As illustrated in <FIG>, based on the embodiment illustrated in <FIG>, the device further includes an obtaining module <NUM>, a second reporting module <NUM>, a generation rule receiving module <NUM>, a second generation module <NUM> and a storing module <NUM>.

The obtaining module <NUM> is configured to obtain a set of second timing relationships, which is predefined, or is received from the base station via signaling, between time-domain units where downlink data supported by a present system are located and time-domain units for uplink HARQ feedback of the downlink data.

The second reporting module <NUM> is configured to report the capability information of the UE to the base station.

The generation rule receiving module <NUM> is configured to receive a generation rule, which is sent by the base station according to the capability information reported by the second reporting module <NUM>, for the set of first timing relationships.

The second generation module <NUM> is configured to generate the set of first timing relationships according to the generation rule received by the generation rule receiving module <NUM> and the set of second timing relationships obtained by the obtaining module <NUM>.

The storing module <NUM> is configured to store the set of first timing relationships generated by the second generation module <NUM>.

<FIG> is a block diagram of a device applied to HARQ feedback indication, according to the invention. The device <NUM> may be provided as a base station. Referring to <FIG>, the device <NUM> includes a processing component <NUM>, a wireless transmitting/receiving component <NUM>, an antenna component <NUM> and a wireless interface-specific signal processing part, and the processing component <NUM> may further include one or more processors.

One processor of the processing component <NUM> may be configured to:.

In an embodiment not being part of the invention, there is also provided a non-transitory computer-readable storage medium including an instruction, and the instruction may be executed by the processing component <NUM> of the device <NUM> to implement the method for HARQ feedback indication. For example, the non-transitory computer-readable storage medium may be a Read-Only Memory (ROM), a Random-Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disc, an optical data storage device and the like.

<FIG> is a block diagram of a device applied to HARQ feedback, according to the invention. For example, the device <NUM> may be UE such as a mobile phone, a computer, a digital broadcast terminal, a messaging device, a gaming console, a tablet, a medical device, exercise equipment and a personal digital assistant.

The processing component <NUM> may include one or more processors <NUM> to execute instructions to perform all or part of the steps in the abovementioned method. Moreover, the processing component <NUM> may include one or more modules which facilitate interaction between the processing component <NUM> and the other components. For instance, the processing component <NUM> may include a multimedia module to facilitate interaction between the multimedia component <NUM> and the processing component <NUM>.

One processor <NUM> in the processing component <NUM> may be configured to:.

Examples of such data include instructions for any applications or methods operated on the device <NUM>, contact data, phonebook data, messages, pictures, video, etc. The memory <NUM> may be implemented by any type of volatile or non-volatile memory devices, or a combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a ROM, a magnetic memory, a flash memory, and a magnetic or optical disk.

The multimedia component <NUM> includes a screen providing an output interface between the device <NUM> and a user. In some implementations, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes the TP, the screen may be implemented as a touch screen to receive an input signal from the user. The TP includes one or more touch sensors to sense touches, swipes and gestures on the TP. The touch sensors may not only sense a boundary of a touch or swipe action but also detect a duration and pressure associated with the touch or swipe action. In some implementations, the multimedia component <NUM> includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the device <NUM> is in an operation mode, such as a photographing mode or a video mode. Each of the front camera and the rear camera may be a fixed optical lens system or have focusing and optical zooming capabilities.

The audio component <NUM> is configured to output and/or input an audio signal. For example, the audio component <NUM> includes a Microphone (MIC), and the MIC is configured to receive an external audio signal when the device <NUM> is in the operation mode, such as a call mode, a recording mode and a voice recognition mode. The received audio signal may further be stored in the memory <NUM> or sent through the communication component <NUM>. In some implementations, the audio component <NUM> further includes a speaker configured to output the audio signal.

In some implementations, the sensor component <NUM> may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

The communication component <NUM> is configured to facilitate wired or wireless communication between the device <NUM> and another device. The device <NUM> may access a communication-standard-based wireless network, such as a Wireless Fidelity (Wi-Fi) network, a 2nd-Generation (<NUM>) or 3rd-Generation (<NUM>) network or a combination thereof. In an exemplary implementation, the communication component <NUM> receives a broadcast signal or broadcast associated information from an external broadcast management system through a broadcast channel. In an exemplary implementation, the communication component <NUM> further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on a Radio Frequency Identification (RFID) technology, an Infrared Data Association (IrDA) technology, an Ultra-Wide Band (UWB) technology, a Bluetooth (BT) technology and another technology.

In an exemplary implementation, the device <NUM> may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components, and is configured to execute the HARQ feedback method.

In an exemplary implementation, there is also provided a non-transitory computer-readable storage medium including an instruction, such as the memory <NUM> including an instruction, and the instruction may be executed by the processor <NUM> of the device <NUM> to implement the abovementioned method. For example, the non-transitory computer-readable storage medium may be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disc, an optical data storage device and the like.

The device embodiments substantially correspond to the method embodiments, and thus related parts refer to part of descriptions of the method embodiments. The device embodiment described above is only schematic, units described as separate parts therein may or may not be physically separated, and parts displayed as units may or may not be physical units, and namely may be located in the same place or may also be distributed to multiple network units. Part or all of the modules therein may be selected according to a practical requirement to achieve the purpose of the solutions of the embodiments. Those of ordinary skill in the art may understand and implement without creative work.

It is to be noted that relational terms "first", "second" and the like in the present disclosure are adopted only to distinguish one entity or operation from another entity or operation and not always to require or imply existence of any such practical relationship or sequence between the entities or operations. Terms "include" and "have" or any other variation thereof is intended to cover nonexclusive inclusions, so that a process, method, object or device including a series of elements not only includes those elements, but also includes other elements that are not clearly listed, or further includes elements intrinsic to the process, the method, the object or the device. Under the condition of no more limitations, an element defined by statement "including alan. " does not exclude existence of another element that is the same in a process, method, object or device including the element.

Other implementations of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure.

It will be appreciated that the present disclosure is not limited to the exact construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof.

Claim 1:
A method for Hybrid Automatic Repeat reQuest, HARQ, feedback indication, for applying to a base station, the method comprising:
determining (S101) present downlink data to be sent to User Equipment, UE;
generating (S102) uplink HARQ feedback indication information for the present downlink data, a timing relationship indicated by the uplink HARQ feedback indication information being comprised in a set of first timing relationships between time-domain units where downlink data for the UE are located and time-domain units for uplink HARQ feedback of the downlink data; and
sending (S103) the present downlink data and Downlink Control Information, DCI, carrying the uplink HARQ feedback indication information to the UE;
characterized in that the method further comprises:
receiving (S302) capability information reported by the UE;
in response to determining, according to the capability information, that the UE supports dynamic HARQ feedback, generating (S303) a generation rule, wherein the generation rule is used for generating the set of first timing relationships by using a predefined set of second timing relationships between time-domain units where downlink data supported by a present system are located and the time-domain units for the uplink HARQ feedback of the downlink data, and the set of first timing relationships is a subset of the set of second timing relationships; and
sending (S304), to the UE, the generation rule for generating, at the UE, the set of first timing relationships according to the generation rule and the set of second timing relationships.