Transmission Method, Device, and Storage Medium for Hybrid Automatic Repeat Request Feedback

Abstract

Embodiments of the present invention relate to a method, apparatus, and storage medium for HARQ feedback transmission. The method includes: for a plurality of different transport blocks (TBs) transmitted alternately, using different time-domain resources to transmit HARQ feedback of different ones of the TBs; wherein, the alternately transmitting the plurality of different TBs includes: cyclically transmitting a TB alternate transmission unit until the total number of retransmissions configured for each of the TBs is satisfied, where the TB alternate transmission unit includes N retransmissions of the different TBs, and N is greater than 0 and less than the total number of retransmissions configured.

Description

[0001] This application claims the priority of the application with the application number 201980000852.1 and the invention title "Transmission Method, Apparatus and Storage Medium for Hybrid Automatic Repeat Request Feedback" filed with the National Intellectual Property Administration on June 18, 2019. This application further claims the priority of the PCT international application with the application number PCT / CN2019 / 086278 filed on May 9, 2019, the entire content of which is incorporated into this application by reference. Technical Field

[0002] This application relates to the field of wireless communication technologies, and in particular, to a transmission method, apparatus and storage medium for hybrid automatic repeat request feedback. Background Art

[0003] Machine Type Communication (MTC) is a typical representative of cellular Internet of Things technologies. Currently, MTC has been widely used in smart cities, such as meter reading; smart agriculture, such as the collection of information such as temperature and humidity; smart transportation, such as shared bicycles and many other fields.

[0004] In the alternating transmission scheduling of multiple transmission blocks (TBs) in MTC, the transmissions of multiple TBs are interleaved with each other. If the transmission of a TB is unsuccessful, a Hybrid Automatic Repeat Request (HARQ) feedback will be sent. However, for devices such as MTC terminals, abnormalities occur during the sending process of HARQ feedback, resulting in a high failure rate of HARQ feedback sending. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide a transmission method, apparatus and storage medium for HARQ feedback.

[0006] According to a first aspect of an embodiment of the present invention, a transmission method for HARQ feedback is provided, and the method includes:

[0007] A transmission method for hybrid automatic repeat request HARQ feedback, the method includes:

[0008] For multiple different transmission blocks (TBs) in alternating transmission, use different time-domain resources to transmit the HARQ feedback of different TBs;

[0009] Wherein, the alternating transmission of multiple different TBs includes: circularly transmitting a TB alternating transmission unit until the total number of configured repeated transmissions for each TB is satisfied, where the TB alternating transmission unit includes N repeated transmissions of different TBs, and N is greater than 0 and less than the total number of configured repeated transmissions.

[0010] In one embodiment, transmitting HARQ feedbacks for different TBs includes: sequentially transmitting M repeated transmissions of the HARQ feedback for each TB, where M is the total number of repeated transmissions of the HARQ feedback for each TB.

[0011] In one embodiment, transmitting HARQ feedbacks for different TBs includes:

[0012] alternately transmitting the HARQ feedbacks for different TBs.

[0013] In one embodiment, the alternately transmitting the HARQ feedbacks for different TBs includes: circularly transmitting a HARQ feedback alternate transmission unit until the total number of repeated transmissions configured for each HARQ feedback is satisfied;

[0014] wherein, the HARQ feedback alternate transmission unit includes the number of repeated transmissions X of each HARQ, and X is greater than 0 and less than the total number of repeated transmissions configured for each HARQ feedback.

[0015] In one embodiment, the method further includes:

[0016] determining the number of repeated transmissions of the HARQ feedback in the HARQ feedback alternate transmission unit according to the received higher layer signaling;

[0017] or,

[0018] determining the number of repeated transmissions of the HARQ feedback in a HARQ feedback alternate transmission unit according to the number of repeated transmissions of the TB in a TB alternate transmission unit;

[0019] or,

[0020] determining the number of repeated transmissions of the HARQ feedback in a HARQ feedback alternate transmission unit according to the frequency hopping unit of the PUCCH;

[0021] wherein, the frequency hopping unit is used to configure the number of consecutive repeated transmissions of the PUCCH in a frequency domain.

[0022] In one embodiment, the transmitting HARQ feedbacks for different TBs by using different time domain resources includes:

[0023] using different time domain resources after a first time interval when the transmission of the first TB is completed to transmit different HARQ feedbacks;

[0024] or,

[0025] Transmit different HARQ feedbacks by using different time domain resources after a second time interval for completing the last TB transmission.

[0026] In one embodiment, for multiple different TBs for alternate transmission, transmitting HARQ feedbacks of different TBs by using different time domain resources includes:

[0027] Transmit HARQ feedbacks of different TBs on a Physical Uplink Control Channel (PUCCH) by using different time domain resources.

[0028] According to a second aspect of the embodiments of the present invention, a method for transmitting HARQ feedback is provided. The method includes:

[0029] Perform a predetermined encoding on HARQ feedbacks of multiple different transport blocks (TBs) for alternate transmission to generate HARQ feedback information; transmit the HARQ feedback information.

[0030] Wherein, the alternate transmission of multiple different TBs includes: circularly transmitting a TB alternate transmission unit until the total number of repeated transmissions configured for each TB is satisfied, where the TB alternate transmission unit includes N repeated transmissions of different TBs, and N is greater than 0 and less than the total number of repeated transmissions configured.

[0031] In one embodiment, the performing a predetermined encoding on HARQ feedbacks of multiple different TBs for alternate transmission includes:

[0032] Perform a bitwise logical AND operation on HARQ feedbacks of multiple different TBs to obtain the HARQ feedback information.

[0033] In one embodiment, the method further includes:

[0034] Modulate the HARQ feedback information by using Binary Phase Shift Keying (BPSK).

[0035] The transmitting the HARQ feedback information includes:

[0036] Transmit the HARQ feedback information after being modulated by using BPSK.

[0037] In one embodiment, the performing a predetermined encoding on HARQ feedbacks of multiple different TBs for alternate transmission further includes:

[0038] Perform a bitwise logical AND operation on HARQ feedbacks of multiple different TBs in groups to obtain HARQ feedbacks of different groups.

[0039] Combine the different sets of HARQ feedbacks to obtain the HARQ feedback information.

[0040] In one embodiment, the method further includes:

[0041] Modulate the HARQ feedback information using Quadrature Phase Shift Keying (QPSK);

[0042] The transmitting the HARQ feedback information includes:

[0043] Transmit the HARQ feedback information after QPSK modulation.

[0044] In one embodiment, the transmitting the HARQ feedback information includes:

[0045] Transmit the HARQ feedback information using the Physical Uplink Control Channel (PUCCH), and the HARQ feedback information is transmitted on the PUCCH resource after a third time interval from the completion of the transmission of the last TB.

[0046] According to a third aspect of the embodiments of the present invention, there is provided a method for transmitting Hybrid Automatic Repeat reQuest (HARQ) feedback, the method including:

[0047] Receive HARQ feedback information obtained by performing predetermined coding on HARQ feedbacks for a plurality of alternately transmitted different Transport Blocks (TBs);

[0048] Decode the HARQ feedback information according to a demodulation method corresponding to the predetermined coding to obtain a decoded sequence;

[0049] Determine the demodulation status of the plurality of different TBs according to the decoded sequence;

[0050] Wherein, the alternately transmitting a plurality of different TBs includes: cyclically transmitting TB alternate transmission units until the total number of retransmissions configured for each TB is satisfied, where the TB alternate transmission unit includes N retransmissions of the different TBs, and N is greater than 0 and less than the configured total number of retransmissions.

[0051] In one embodiment, the determining the demodulation status of the plurality of different TBs according to the decoded sequence includes:

[0052] If the decoded sequence is a preset sequence, determine that the plurality of different TBs are all successfully received.

[0053] In one embodiment, the determining the demodulation status of the plurality of different TBs according to the decoded sequence includes:

[0054] If the decoded sequence is not a preset sequence, determine that at least one of the TBs is not successfully demodulated.

[0055] In one embodiment, the method further includes:

[0056] If at least one of the TBs is not successfully demodulated, retransmit the entire TB alternate transmission unit.

[0057] In one embodiment, the decoding the HARQ feedback information according to the demodulation method corresponding to the predetermined coding to obtain a decoded sequence includes:

[0058] Use the demodulation method of binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK) to decode the HARQ feedback information to obtain the decoded sequence.

[0059] According to a fourth aspect of the embodiments of the present invention, there is provided a transmission device for HARQ feedback, the device includes:

[0060] A first transmission module, configured to transmit HARQ feedback, wherein, for a plurality of different transport blocks (TBs) transmitted alternately, different time domain resources are used to transmit the HARQ feedback of different TBs;

[0061] Wherein, the alternately transmitting a plurality of different TBs includes: cyclically transmitting a TB alternate transmission unit until the total number of retransmissions configured for each TB is satisfied, wherein the TB alternate transmission unit includes N retransmissions of the different TBs, and N is greater than 0 and less than the configured total number of retransmissions.

[0062] In one embodiment, the first transmission module includes:

[0063] A first transmission sub-module, configured to sequentially transmit M retransmissions of the HARQ feedback of each TB, where M is the total number of retransmissions of the HARQ feedback of each TB.

[0064] In one embodiment, the first transmission module includes:

[0065] A second transmission sub-module, configured to alternately transmit the HARQ feedback of different TBs.

[0066] In one embodiment, the first transmission module includes:

[0067] A third transmission sub-module, configured to cyclically transmit a HARQ feedback alternate transmission unit until the total number of retransmissions configured for each HARQ feedback is satisfied;

[0068] Among them, the HARQ feedback alternating transmission unit includes the number of repetitions X of each HARQ, where X is greater than 0 and less than the total number of repetitions configured for each HARQ feedback.

[0069] In one embodiment, the device further includes:

[0070] A repetition number determination module, configured to determine the number of repetitions of the HARQ feedback in the HARQ feedback alternating transmission unit according to the received high-layer signaling;

[0071] Or,

[0072] Determine the number of repetitions of the HARQ feedback in a HARQ feedback alternating transmission unit according to the number of repetitions of the TB in one TB alternating transmission unit;

[0073] Or,

[0074] Determine the number of transmissions of the HARQ feedback in a HARQ feedback alternating transmission unit according to the frequency hopping unit of the physical uplink control channel PUCCH;

[0075] Among them, the frequency hopping unit is used to configure the continuous number of repetitions of the PUCCH in a frequency domain.

[0076] In one embodiment, the first transmission module includes:

[0077] A fourth transmission sub-module, configured to transmit different HARQ feedbacks using different time domain resources after the first time interval for completing the transmission of the first TB;

[0078] Or,

[0079] Transmit different HARQ feedbacks using different time domain resources after the second time interval for completing the transmission of the last TB.

[0080] In one embodiment, the first transmission module includes:

[0081] A fifth transmission sub-module, configured to transmit the HARQ feedbacks of different TBs on the physical uplink control channel PUCCH using different time domain resources.

[0082] According to the fifth aspect of the embodiments of the present invention, there is provided a transmission device for HARQ feedback, the device includes:

[0083] A first generation module, configured to perform predetermined coding on the HARQ feedbacks of multiple different transport blocks (TBs) transmitted alternately to generate HARQ feedback information;

[0084] A second transmission module, configured to transmit the HARQ feedback information

[0085] Among them, the alternately transmitting multiple different TBs includes: circularly transmitting a TB alternate transmission unit until the total number of repeated transmissions configured for each of the TBs is satisfied, where the TB alternate transmission unit includes N repeated transmissions of the different TBs, and N is greater than 0 and less than the configured total number of repeated transmissions.

[0086] In one embodiment, the first generating module includes: a first generating sub-module, configured to perform a bitwise logical AND operation on the HARQ feedbacks of multiple different ones of the TBs to obtain the HARQ feedback information.

[0087] In one embodiment, the second transmitting module includes: a first modulating module, configured to modulate the HARQ feedback information using BPSK;

[0088] The second transmitting module includes: a sixth transmitting sub-module, configured to transmit the HARQ feedback information after being modulated using BPSK.

[0089] In one embodiment, the first generating module includes:

[0090] a second generating sub-module, configured to perform a bitwise logical AND operation on the HARQ feedbacks of multiple different ones of the TBs in groups to obtain different groups of HARQ feedbacks;

[0091] a third generating sub-module, configured to combine the different groups of HARQ feedbacks to obtain the HARQ feedback information.

[0092] In one embodiment, the second transmitting module includes: a second modulating module, configured to modulate the HARQ feedback information using QPSK;

[0093] The second transmitting module includes: a seventh transmitting sub-module, configured to transmit the HARQ feedback information after being modulated using QPSK.

[0094] In one embodiment, the second transmitting module includes:

[0095] an eighth transmitting sub-module, configured to transmit the HARQ feedback information using a physical uplink control channel PUCCH, and the HARQ feedback information is transmitted on a PUCCH resource after a third time interval when the transmission of the last one of the TBs is completed.

[0096] According to a sixth aspect of an embodiment of the present invention, a transmission device for HARQ feedback, the device includes:

[0097] a first receiving module, configured to receive HARQ feedback information obtained by performing predetermined encoding on the HARQ feedbacks of multiple alternately transmitted different transport blocks TBs;

[0098] A first decoding module, configured to decode the HARQ feedback information according to a demodulation method corresponding to the predetermined coding to obtain a decoded sequence;

[0099] A first determination module, configured to determine a demodulation status of the multiple different TBs according to the decoded sequence;

[0100] Wherein, the alternately transmitting multiple different TBs includes: circularly transmitting a TB alternate transmission unit until the total number of repeated transmissions configured for each TB is satisfied, where the TB alternate transmission unit includes N repeated transmissions of the different TBs, and N is greater than 0 and less than the configured total number of repeated transmissions.

[0101] In one embodiment, the first determination module includes:

[0102] A first determination sub-module, configured to determine that all the multiple different TBs are successfully received if the decoded sequence is a preset sequence.

[0103] In one embodiment, the first determination module includes:

[0104] A second determination sub-module, configured to determine that at least one of the TBs is not successfully demodulated if the decoded sequence is not a preset sequence.

[0105] In one embodiment, the device further includes:

[0106] A third transmission module, configured to re-transmit the entire TB alternate transmission unit if at least one of the TBs is not successfully demodulated.

[0107] In one embodiment, the first decoding module includes:

[0108] A first decoding sub-module, configured to decode the HARQ feedback information by using a demodulation method of binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK) to obtain the decoded sequence.

[0109] According to a seventh aspect of an embodiment of the present invention, there is provided a storage medium, on which an executable program is stored, and when the executable program is executed by a processor, the steps of the HARQ feedback transmission method provided in the first aspect are implemented.

[0110] According to an eighth aspect of an embodiment of the present invention, there is provided a storage medium, on which an executable program is stored, and when the executable program is executed by a processor, the steps of the HARQ feedback transmission method provided in the second aspect are implemented.

[0111] According to a ninth aspect of an embodiment of the present invention, a storage medium is provided, on which an executable program is stored. When the executable program is executed by a processor, the steps of the HARQ feedback transmission method provided in the third aspect are implemented.

[0112] According to a tenth aspect of an embodiment of the present invention, a HARQ feedback transmission device is provided, including a processor, a memory, and an executable program stored on the memory and capable of running on the processor. When the processor runs the executable program, the steps of the HARQ feedback transmission method provided in the first aspect are executed.

[0113] According to an eleventh aspect of an embodiment of the present invention, a HARQ feedback transmission device is provided, including a processor, a memory, and an executable program stored on the memory and capable of running on the processor. When the processor runs the executable program, the steps of the HARQ feedback transmission method provided in the second aspect are executed.

[0114] According to a twelfth aspect of an embodiment of the present invention, a HARQ feedback transmission device is provided, including a processor, a memory, and an executable program stored on the memory and capable of running on the processor. When the processor runs the executable program, the steps of the HARQ feedback transmission method provided in the third aspect are executed.

[0115] For the HARQ feedback transmission method, device, and storage medium provided in the embodiments of the present invention, for multiple different TBs transmitted alternately, different time-domain resources are used to transmit the HARQ feedback of different TBs; by using different time-domain resources for the transmission of HARQ feedback, the overlap of the HARQ feedback of multiple TBs in the transmission time can be reduced, thereby reducing the complexity in the time domain when the device sending the HARQ feedback sends the HARQ feedback, reducing the requirement for the processing capacity of the device sending the HARQ feedback, and further improving the success rate of sending the HARQ feedback and the stability of the device sending the HARQ feedback.

[0116] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0117] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the embodiments of the present invention.

[0118] Figure 1 It is a schematic structural diagram of a wireless communication system shown according to an exemplary embodiment;

[0119] Figure 2It is a schematic diagram of TB alternating transmission shown according to an exemplary embodiment;

[0120] Figure 3 It is a schematic diagram of HARQ feedback time overlap shown according to an exemplary embodiment;

[0121] Figure 4 It is a flowchart of a transmission method of HARQ feedback shown according to an exemplary embodiment;

[0122] Figure 5 It is a schematic diagram of a HARQ feedback transmission shown according to an exemplary embodiment;

[0123] Figure 6 It is another schematic diagram of a HARQ feedback transmission shown according to an exemplary embodiment;

[0124] Figure 7 It is yet another schematic diagram of a HARQ feedback transmission shown according to an exemplary embodiment;

[0125] Figure 8 It is a flowchart of another transmission method of HARQ feedback shown according to an exemplary embodiment;

[0126] Figure 9 It is a schematic diagram of a HARQ feedback transmission shown according to an exemplary embodiment;

[0127] Figure 10 It is another schematic diagram of a HARQ feedback transmission shown according to an exemplary embodiment;

[0128] Figure 11 It is a flowchart of another transmission method of HARQ feedback shown according to an exemplary embodiment;

[0129] Figure 12 It is a block diagram of a transmission device of HARQ feedback shown according to an exemplary embodiment;

[0130] Figure 13 It is a block diagram of another transmission device of HARQ feedback shown according to an exemplary embodiment;

[0131] Figure 14 It is a block diagram of yet another transmission device of HARQ feedback shown according to an exemplary embodiment;

[0132] Figure 15 It is a block diagram of still another transmission device of HARQ feedback shown according to an exemplary embodiment;

[0133] Figure 16 It is a block diagram of still another transmission device of HARQ feedback shown according to an exemplary embodiment;

[0134] Figure 17 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0135] Figure 18 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0136] Figure 19 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0137] Figure 20 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0138] Figure 21 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0139] Figure 22 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0140] Figure 23 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0141] Figure 24 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0142] Figure 25 It is a block diagram of a HARQ feedback transmission device shown according to an exemplary embodiment

[0143] Figure 26 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0144] Figure 27 It is a block diagram of yet another HARQ feedback transmission device shown according to an exemplary embodiment;

[0145] Figure 28 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0146] Figure 29 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment;

[0147] Figure 30 It is a block diagram of another HARQ feedback transmission device shown according to an exemplary embodiment.. Detailed implementation manners

[0148] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present invention as detailed in the appended claims.

[0149] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present invention. The singular forms "a", "the", and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0150] It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present invention to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining".

[0151] Please refer to Figure 1 , which shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present invention. As Figure 1 shown, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: a plurality of terminals 11 and a plurality of base stations 12.

[0152] Among them, the terminal 11 can be a device that provides voice and / or data connectivity to a user. The terminal 11 can communicate with one or more core networks via a Radio Access Network (RAN). The terminal 11 can be an Internet of Things (IoT) terminal, such as a sensor device, a mobile phone (or a "cellular" phone), and a computer with an IoT terminal. For example, it can be a fixed, portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted device. For example, a Station (STA), a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a User Equipment (UE). Or, the terminal 11 can also be a device of an unmanned aerial vehicle. Or, the terminal 11 can also be a vehicle-mounted device. For example, it can be an on-board computer with wireless communication functions, or a wireless communication device external to the on-board computer. Or, the terminal 11 can also be a roadside device. For example, it can be a street lamp, a traffic signal, or other roadside devices with wireless communication functions, etc.

[0153] The base station 12 can be a network-side device in a wireless communication system. Among them, the wireless communication system can be a 4th generation mobile communication (4G) system, also known as the Long Term Evolution (LTE) system; or, the wireless communication system can also be a 5G system, also known as the new radio (NR) system or the 5G NR system. Or, the wireless communication system can also be the next-generation system of the 5G system. Among them, the access network in the 5G system can be called the NG-RAN (New Generation - Radio Access Network, new generation wireless access network). Or, an MTC system.

[0154] Among them, the base station 12 can be an evolved Node B (eNB) adopted in a 4G system. Alternatively, the base station 12 can also be a gNode B (gNB) with a centralized distributed architecture adopted in a 5G system. When the base station 12 adopts a centralized distributed architecture, it generally includes a central unit (CU) and at least two distributed units (DUs). The protocol stacks of the Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer are set in the central unit; the Physical (PHY) layer protocol stack is set in the distributed unit. The specific implementation manner of the base station 12 in the embodiments of the present invention is not limited.

[0155] A wireless connection can be established between the base station 12 and the terminal 11 through a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as the new air interface; or, the wireless air interface can also be a wireless air interface based on the standard of the next-generation mobile communication network technology of 5G.

[0156] In some embodiments, an E2E (End to End) connection can also be established between terminals 11. For example, in vehicle-to-everything (V2X) communication, scenarios such as vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, and vehicle-to-pedestrian (V2P) communication.

[0157] In some embodiments, the above wireless communication system may further include a network management device 13.

[0158] A plurality of base stations 12 are respectively connected to a network management device 13. Among them, the network management device 13 may be a core network device in a wireless communication system. For example, the network management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Or, the network management device may also be other core network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS), etc. The embodiments of the present invention do not limit the implementation form of the network management device 13.

[0159] The execution entities involved in the embodiments of the present invention include, but are not limited to: devices that use Machine-Type Communication (MTC) for communication transmission, such as MTC terminals, Internet of Things terminals, and other MTC user terminals.

[0160] The application scenario of the embodiments of the present invention is that, in view of the weak signal coverage of MTC, the relatively low cost and low processing capacity of MTC devices, etc., MTC uses a mechanism of TB alternating transmission in multi-TB scheduling, that is, different TBs are alternately and repeatedly transmitted. Figure 2 To alternately and repeatedly transmit a sequence of TBs.

[0161] Adopting the method of TB alternating transmission, the end time of each TB transmission is relatively close. According to the way of transmitting HARQ feedback adopted in related MTC, such as Figure 3 as shown, it will cause the HARQ feedbacks for multiple TBs to overlap in time, thereby increasing the complexity of the HARQ feedback processing by the device that sends the HARQ feedback, that is, the MTC user terminal. Due to the performance limitations of the device that sends the HARQ feedback, it may even cause the device that sends the HARQ feedback to malfunction.

[0162] As Figure 4 shown, this exemplary embodiment provides a method for transmitting HARQ feedback. The method for transmitting HARQ feedback can be used in wireless communication devices such as MTC user terminals, and includes:

[0163] For multiple different TBs transmitted alternately, use different time-domain resources to transmit the HARQ feedbacks of different TBs.

[0164] Among them, alternately transmitting multiple different TBs includes: circularly transmitting a TB alternate transmission unit until the total number of repeated transmissions configured for each TB is satisfied, where the TB alternate transmission unit includes N repeated transmissions of different TBs, and N is greater than 0 and less than the total number of repeated transmissions configured.

[0165] A TB alternate transmission unit includes: at least two TBs, which are sorted in a certain order to form a TB alternate transmission unit.

[0166] The HARQ feedback sender, such as the MTC user side, uses different time domain resources to transmit the HARQ feedback of different TBs, which can reduce the overlap in the transmission time of the HARQ feedback of multiple TBs. The HARQ feedback sender processes one HARQ feedback in the same time domain, reducing the complexity in the time domain when the HARQ feedback sender sends the HARQ feedback, reducing the performance requirements for the HARQ feedback sender, thereby improving the success rate of sending the HARQ feedback and enhancing the stability of the HARQ feedback sender. Here, one HARQ feedback can be transmitted using one time domain resource.

[0167] Among them, the TB here is a type of content block; different TBs contain different data contents. For example Figure 2 As shown, the total number of repeated transmissions of a TB is 4. In a TB alternate transmission unit, a TB is repeated N times, Figure 2 where N is 2. The data content in TB1 with 4 total repeated transmissions is the same, and the data contents in TB1 and TB2 are different. The content of TB1 transmitted 4 times is the same.

[0168] Through alternate transmission, the received power of the same TB can be accumulated, thereby increasing the decoding success rate of the receiving end of the fast TB.

[0169] In this embodiment, for the HARQ feedback of such alternately transmitted multiple different TBs, different time domain resources are used for transmission. In this way, it is possible to avoid the HARQ feedback of different TBs occupying the same time domain resources, resulting in the complexity introduced by the need to transmit orthogonally in the time domain, thereby reducing the processing complexity when the HARQ feedback sender sends the HARQ feedback. Especially for terminals such as MTC with relatively weak processing capabilities, it is possible to reduce the phenomenon of transmission failure caused by the high complexity of sending the HARQ feedback, and improve the success rate of sending the HARQ feedback.

[0170] In some embodiments, a TB has one HARQ feedback.

[0171] Of course, in some other embodiments, the TBs for multiple repeated transmissions may have multiple HARQ feedbacks. If a TB has one HARQ feedback, the transmission resources occupied by unnecessary HARQ feedbacks are thus reduced, saving transmission overhead.

[0172] As Figure 2 shown in the alternate transmission of the TBs, the TB alternate transmission unit is transmitted twice, and a TB is repeatedly transmitted twice in one TB alternate transmission unit. The data content in one repeatedly transmitted TB is the same. For example, the data content in TB1 for 4 transmissions is the same.

[0173] In the alternate transmission, a TB will be repeatedly transmitted alternately multiple times. After the HARQ feedback sender, such as the MTC user side, receives the TB transmitted multiple times, it will demodulate the TB received multiple times together; the demodulation result is transmitted back to the TB sender through HARQ feedback; the HARQ feedback includes: acknowledgement (ACK) and negative acknowledgement (NACK), etc.

[0174] Specifically, if the demodulation result is correct, ACK is fed back, and / or, if the demodulation result is incorrect, NACK is fed back.

[0175] For another example, if the demodulation result is correct, no HARQ feedback is sent. If the demodulation result is incorrect, NACK is sent. For yet another example, if the demodulation result is correct, HARQ feedback is sent. If the demodulation result is incorrect, no NACK is sent. In this way, the receiving end of the HARQ feedback can determine whether the TB has been successfully transmitted based on whether the HARQ feedback is received on the predetermined transmission resources.

[0176] As Figure 2 shown, TB1 is transmitted a total of the total number of repeated transmissions in the alternate repeated transmission. Figure 2 In this case, the total number of repeated transmissions of the TB is 4 times. After the HARQ feedback sender analyzes TB1 for 4 repeated transmissions, it will send a HARQ feedback to the base station to feedback whether TB1 has been correctly demodulated. One HARQ feedback indicates the final transmission result of TB1 for 4 repeated transmissions. Figure 2 In the alternate transmission of TB1 to TB4 shown, the HARQ feedback sender will transmit a total of 4 HARQ feedbacks respectively corresponding to TB1 to TB4 to the base station.

[0177] Different time domain resources mean that the use of the time domain resources of the HARQ feedbacks of different TBs does not overlap in the time domain.

[0178] As Figure 5As shown, by using different time-domain resources to transmit HARQ feedback for different transport blocks (TBs), the time-domain overlap in the transmission of HARQ feedback for multiple TBs can be reduced. The HARQ feedback sender only needs to process one HARQ feedback in the same time domain, reducing the complexity of the HARQ feedback sender in the time domain when transmitting HARQ feedback, lowering the performance requirements for the HARQ feedback sender, thereby improving the success rate of HARQ feedback transmission and enhancing the stability of the HARQ feedback sender.

[0179] In some embodiments, different time-domain resources are used to transmit HARQ feedback for different TBs on the Physical Uplink Control Channel (PUCCH).

[0180] Since the HARQ feedback is carried and transmitted on the PUCCH, different time-domain resources of the PUCCH can be invoked to achieve the transmission of HARQ feedback in different time domains.

[0181] In some embodiments, to transmit HARQ feedback for different TBs using different PUCCH time-frequency resources, one of the following six methods can be adopted:

[0182] Method 1: Use the same frequency-domain resources and different time-domain resources to transmit the HARQ feedback of the TB on the PUCCH;

[0183] Method 2: Use the same code-domain resources and different time-domain resources to transmit the HARQ feedback of the TB on the PUCCH;

[0184] Method 3: Use the same frequency-domain resources and code-domain resources, but use different time-domain resources to transmit the HARQ feedback of the TB on the PUCCH;

[0185] Method 4: Use different frequency-domain resources and different time-domain resources to transmit the HARQ feedback of the TB on the PUCCH.

[0186] Method 5: Use different code-domain resources and different time-domain resources to transmit the HARQ feedback of the TB on the PUCCH.

[0187] Method 6: Use different frequency-domain resources and code-domain resources, and use different time-domain resources to transmit the HARQ feedback of the TB on the PUCCH.

[0188] Transmission resources are configured for the PUCCH, and these transmission resources can be divided into: time-domain resources, frequency-domain resources, and code-domain resources. For example, different time-domain resources correspond to different times of using the PUCCH channel to transmit information.

[0189] Different frequency-domain resources correspond to different transmission sub-bands or carriers of different frequencies of the PUCCH.

[0190] Different code domain resources indicate that different formats can be used to partition PUCCH resources.

[0191] The transmission of HARQ feedback only needs to satisfy different time domains, which can avoid the HARQ feedback of multiple TBs overlapping in time and reduce the workload of the HARQ feedback sender. Therefore, multiple HARQ feedbacks of different TBs can be transmitted within the PUCCH of the same frequency domain, the same code domain, or the same frequency domain and code domain.

[0192] In some embodiments, transmitting the HARQ feedback of different TBs includes: sequentially transmitting M repeated transmissions of the HARQ feedback of each TB, where M is the total number of repeated transmissions of the HARQ feedback of each TB.

[0193] In the TB alternating transmission, one TB corresponds to one HARQ feedback, and each HARQ feedback can be transmitted only once. As Figure 5 shown, four HARQ feedbacks corresponding to TB1 to TB4 are transmitted once in different time domains.

[0194] As Figure 6 shown, each HARQ feedback can also be transmitted M times. One HARQ feedback with repeated transmissions can be demodulated together to improve the success rate of reception and demodulation at the base station. Figure 6 In the figure, M is 4, and P1, P2, P3, and P4 respectively represent the HARQ feedbacks of TB1, TB2, TB3, and TB4. P1, P2, P3, and P4 are each transmitted 4 times.

[0195] In some embodiments, the HARQ feedbacks of different TBs are alternately transmitted;

[0196] The HARQ feedback corresponding to each TB can be alternately and repeatedly transmitted. The HARQ feedbacks of different TBs can be used to establish a HARQ feedback alternating transmission unit according to the order of each TB in the TB alternating transmission unit, and the HARQ feedback alternating transmission unit is sent multiple times.

[0197] In some embodiments, the HARQ feedback alternating transmission unit can be cyclically transmitted until the total number of repeated transmissions configured for each HARQ feedback is satisfied; wherein, the HARQ feedback alternating transmission unit includes the number of repeated transmissions X of each HARQ, and X is greater than 0 and less than the total number of repeated transmissions configured for each HARQ feedback.

[0198] Among them, the HARQ feedback corresponding to each TB can be alternately and repeatedly transmitted. Specifically, the HARQ feedbacks of different TBs can be used to establish a HARQ feedback alternate transmission unit according to the order of each TB in the TB alternate transmission unit, and the HARQ feedback alternate transmission unit can be sent multiple times. A HARQ feedback can be repeatedly transmitted X times in a HARQ feedback alternate transmission unit. As Figure 7 shown, the HARQ feedback corresponding to TB1 can be repeatedly transmitted X times first, where X is 2, and then the HARQ feedbacks of TB2, TB3, and TB4 are successively repeatedly transmitted X times. After the X - time repeated transmission of the HARQ feedbacks of all TBs is completed, the X - time repeated transmission of the HARQ feedbacks of all TBs is performed again until a set end condition is met. For example, the end condition can be that the number of times the HARQ feedback is transmitted reaches a predetermined total repeated transmission number. Figure 7 In Figure 7 , the total repeated transmission number of the HARQ feedback is 4. Here, the order of the HARQ feedbacks corresponding to different TBs in the HARQ feedback alternate transmission unit can be arranged according to the order of the TBs corresponding to the HARQ feedbacks in the TB alternate transmission unit.

[0199] In some embodiments, the repeated transmission number of the HARQ feedback in the HARQ feedback alternate transmission unit is determined according to the received high - layer signaling; or, the repeated transmission number of the HARQ feedback in a HARQ feedback alternate transmission unit is determined according to the repeated transmission number of the TBs within a TB alternate transmission unit; or, the repeated transmission number of the HARQ feedback in a HARQ feedback alternate transmission unit is determined according to the frequency - hopping unit of the PUCCH.

[0200] Here, the number of times of HARQ feedback transmission can be configured by high - layer signaling; it can also be determined according to the number of times of transmission adopted by the TB during the alternate transmission. For example, the number of times of transmission of the TB is the same as or linearly corresponding to the number of times of transmission of the HARQ feedback.

[0201] The frequency - hopping unit is used to configure the number of repetitions of the PUCCH in a frequency domain. The size of the frequency - hopping unit can be configured by the base station. For example, the size of the frequency - hopping unit is configured as Q times. Its physical meaning is that after the PUCCH is repeatedly transmitted Q times in a certain frequency band, it needs to jump to another frequency band to be repeatedly transmitted M times. Therefore, the number of times of transmission of the HARQ feedback in a HARQ feedback alternate transmission unit can be set to align with the size of the frequency - hopping unit, that is, X is equal to Q.

[0202] In some embodiments, different HARQ feedbacks are transmitted using different time - domain resources after the first time interval for completing the transmission of the first TB; or, different HARQ feedbacks are transmitted using different time - domain resources after the second time interval for completing the transmission of the last TB.

[0203] Taking Figure 6 the HARQ feedback as an example, the HARQ feedback transmission can start 4 ms after the end of TB1. Taking Figure 7 the HARQ feedback as an example, the entire alternating transmission can use the end time point of the transmission of the last TB as a reference point and start the transmission, for example, 4 ms after the end of the transmission of the last TB. In this way, time can be reserved for the transmission configuration of the HARQ feedback to meet the timing requirements.

[0204] By using different time-domain resources to transmit the HARQ feedbacks of different TBs, the overlap in the transmission time of the HARQ feedbacks of multiple TBs can be reduced. The HARQ feedback sender only needs to process one HARQ feedback in the same time domain, reducing the complexity of the HARQ feedback sender in transmitting the HARQ feedback in the time domain, reducing the requirement for the processing ability of the HARQ feedback sender, thereby improving the success rate of transmitting the HARQ feedback and enhancing the stability of the HARQ feedback sender.

[0205] As Figure 8 shown, this exemplary embodiment provides a method for transmitting HARQ feedback. The method for transmitting HARQ feedback can be used in wireless communication devices such as MTC user terminals. The method for transmitting HARQ feedback includes:

[0206] Step 801: Perform predetermined coding on the HARQ feedbacks of multiple different TBs transmitted alternately to generate HARQ feedback information;

[0207] Step 802: Transmit the HARQ feedback information.

[0208] Among them, transmitting multiple different TBs alternately includes: circularly transmitting TB alternating transmission units until the total number of repeated transmissions configured for each TB is satisfied, where the TB alternating transmission unit includes N repeated transmissions of different TBs, and N is greater than 0 and less than the total number of repeated transmissions configured.

[0209] One TB alternating transmission unit includes: at least two TBs, and these TBs are sorted in a certain order to form a TB alternating transmission unit.

[0210] The HARQ feedback sender, such as an MTC user terminal, after receiving multiple different TBs, demodulates and decodes the TBs, confirms whether the TBs are decoded successfully, then encodes the HARQ feedbacks of each TB to obtain a HARQ feedback information, and transmits the HARQ feedback information, which can reduce the overlap of the HARQ feedback in time, reduce the complexity of the HARQ feedback sender in processing the HARQ feedback, reduce the performance requirements for the HARQ feedback sender, thereby improving the success rate of transmitting the HARQ feedback information and enhancing the stability of the HARQ feedback sender. Here, one HARQ feedback can be transmitted using one time-domain resource.

[0211] Among them, TB here is a content block; different TBs contain different data contents. For example, Figure 2 As shown, the total number of repeated transmissions of one TB is 4. In one TB alternate transmission unit, one TB is repeatedly transmitted N times, Figure 1 where N is 2. The data contents in TB1 with 4 total repeated transmissions are the same, and the data contents in TB1 and TB2 are different. The contents of TB1 in 4 transmissions are the same.

[0212] In some embodiments, one TB has one HARQ feedback.

[0213] Of course, in some other embodiments, the TBs with multiple repeated transmissions may have multiple HARQ feedbacks. If one TB has one HARQ feedback, this reduces the transmission resources occupied by unnecessary HARQ feedbacks and saves the transmission overhead.

[0214] For example, Figure 2 As shown in the TB alternate transmission, the TB alternate transmission unit is transmitted twice, and one TB is repeatedly transmitted twice in one TB alternate transmission unit. The data contents in one repeatedly transmitted TB are the same, such as the data contents in TB1 in 4 transmissions are the same.

[0215] In the alternate transmission, one TB will be repeatedly transmitted alternately for multiple times. After the HARQ feedback sender receives the TB transmitted multiple times, it will demodulate the TBs received multiple times together; the demodulation result is transmitted back to the TB sender through the HARQ feedback; the HARQ feedback includes: ACK, NACK, etc.

[0216] Specifically, for example, if the demodulation result is correct, ACK is fed back, and / or, if the demodulation result is incorrect, NACK is fed back.

[0217] For example, Figure 2 As shown, TB1 is transmitted 4 times in total in the alternate repeated transmission. After the HARQ feedback sender analyzes the 4 repeated transmissions of TB1, it will send a HARQ feedback to the base station to feedback whether TB1 is correctly demodulated. Figure 2 In the alternate transmission of TB1 to TB4 as shown, the HARQ feedback sender will transmit a total of 4 HARQ feedbacks respectively corresponding to TB1 to TB4 to the base station.

[0218] Here, the HARQ feedbacks of multiple TBs can be pre-coded to obtain HARQ feedback information encoded by multiple HARQ feedbacks; the content of the HARQ feedback information is determined by the pre-coding and can reflect the demodulation results of multiple TBs, such as whether multiple TBs are all correctly demodulated.

[0219] The HARQ feedback information can be one, so that during the transmission of the HARQ feedback information, the situation where the HARQ feedbacks of multiple TBs overlap in time can be reduced, the complexity of the HARQ feedback sender processing the HARQ feedback can be reduced, the workload of the HARQ feedback sender can be alleviated, and the stability of the HARQ feedback sender can be improved.

[0220] In some embodiments, bitwise logical AND operations are performed on the HARQ feedbacks of multiple different TBs to obtain the HARQ feedback information.

[0221] For example, as Figure 9 shown, the HARQ feedbacks respectively corresponding to TB1 to TB4 can be subjected to bitwise logical AND processing, so as to obtain the HARQ feedback information reflecting the overall demodulation situation of TB1 to TB4. For example: if the HARQ feedback of TB1 is "0", indicating demodulation failure, and the HARQ feedbacks of TB2, TB3, and TB4 are "1", indicating demodulation success, then the HARQ feedback information "0" is obtained after performing bitwise logical AND operations on all HARQ feedbacks. After receiving the HARQ feedback information, the base station can know that at least one of TB1 to TB4 has demodulation failure, and can retransmit TB1 to TB4 and perform other processing.

[0222] In some embodiments, the HARQ feedback information after BPSK modulation is transmitted.

[0223] Here, the HARQ feedback information can be modulated to BPSK to meet the requirements of PUCCH, and the HARQ feedback information is carried on the PUCCH for transmission.

[0224] Encoding multiple HARQ feedbacks into one HARQ feedback information and transmitting it through the PUCCH avoids the problem of time overlap of the PUCCH carried by the HARQ feedback and reduces the workload of the HARQ feedback sender.

[0225] In some embodiments, the HARQ feedbacks of multiple different TBs are subjected to bitwise logical AND operations on the HARQ feedbacks in groups to obtain different groups of HARQ feedbacks; the different groups of HARQ feedbacks are combined to obtain the HARQ feedback information.

[0226] For example, the HARQ feedbacks of multiple different TBs can be divided into two groups, as Figure 10As shown, the HARQ feedbacks respectively corresponding to TB1 to TB4 can be divided into two groups; the HARQ feedback of TB1 and the HARQ feedback of TB1 form a group, and bitwise logical AND processing is performed to obtain a 1-bit result. The HARQ feedback of TB3 and the HARQ feedback of TB4 form another group, and bitwise logical AND processing is performed to obtain a 1-bit result; the logical AND results obtained from the two groups are combined to form 2-bit HARQ feedback information. For example, if the HARQ feedback of TB1 is "0" indicating demodulation failure, and the HARQ feedbacks of TB2, TB3, and TB4 are "1" indicating demodulation success, then the HARQ feedback information "1" is obtained after performing bitwise logical AND operation on the HARQ feedbacks of TB1 and TB2, and the HARQ feedback information "1" is obtained after performing bitwise logical AND operation on the HARQ feedbacks of TB3 and TB4. After receiving the HARQ feedback information, the base station can know that at least one of TB1 and TB2 has demodulation failure, and TB1 and TB2 can be retransmitted and other processing can be performed. Among them, it can be pre-agreed which TBs form a group.

[0227] In some embodiments, the transmitted HARQ feedback information is modulated by QPSK.

[0228] Here, for the 2-bit HARQ feedback information, it can be modulated to the HARQ feedback information by QPSK to meet the requirements of PUCCH, and the HARQ feedback information is carried on the PUCCH for transmission.

[0229] Encoding multiple HARQ feedbacks into one HARQ feedback information and transmitting it through the PUCCH avoids the problem of time overlap of the PUCCHs carried by multiple HARQ feedbacks and reduces the workload of the HARQ feedback transmitter.

[0230] In some embodiments, the physical uplink control channel PUCCH is used to transmit the HARQ feedback information, and the HARQ feedback information is transmitted on the PUCCH resource after the third time interval when the last TB transmission is completed.

[0231] The transmission time of the HARQ feedback information takes the end time point of the transmission of the last TB as a reference point and starts to be transmitted, for example, 4 ms after the end of the transmission of the last TB. Time can be reserved for HARQ feedback encoding.

[0232] In this way, it can be ensured that the HARQ feedback information is transmitted after all TB transmissions are completed, reducing the occurrence of timing chaos.

[0233] The HARQ feedback information can be one, so that during the transmission of HARQ feedback information, the situation where HARQ feedbacks of multiple TBs overlap in time can be reduced, the complexity of the HARQ feedback sender processing HARQ feedback can be decreased, the processing burden of the HARQ feedback sender can be alleviated, and the stability of the HARQ feedback sender can be improved.

[0234] As Figure 11 shown, this exemplary embodiment provides a method for transmitting HARQ feedback, which can be applied to the base station of the MTC system, but is not limited to the base station of this system. The method for transmitting HARQ feedback includes:

[0235] Step 1101: Receive HARQ feedback information obtained by performing predetermined encoding on HARQ feedbacks of multiple alternately transmitted different TBs;

[0236] Step 1102: Decode the HARQ feedback information according to the demodulation method corresponding to the predetermined encoding to obtain a decoded sequence;

[0237] Step 1103: Determine the demodulation statuses of multiple different TBs according to the decoded sequence;

[0238] Among them, alternately transmitting multiple different TBs includes: circularly transmitting a TB alternate transmission unit until the total number of repeated transmissions configured for each TB is satisfied, where the TB alternate transmission unit includes N repeated transmissions of different TBs, and N is greater than 0 and less than the total number of repeated transmissions configured.

[0239] A TB alternate transmission unit includes: at least two TBs, and these TBs are sorted in a certain order to form a TB alternate transmission unit.

[0240] Here, a TB alternate transmission unit can be sent by a TB sender such as a base station; the HARQ feedback sender, such as an MTC user terminal, after receiving multiple different TBs, decodes the TBs, obtains a HARQ feedback information by performing predetermined encoding on the HARQ feedbacks of each TB, and after modulating through the modulation method corresponding to the predetermined encoding, sends the HARQ feedback information, which can reduce the situation where HARQ feedbacks overlap in time, reduce the complexity of the HARQ feedback sender processing HARQ feedback, reduce the performance requirements for the HARQ feedback sender, and further improve the success rate of sending HARQ feedback information and the stability of the HARQ feedback sender. Here, one HARQ feedback can be transmitted using one time-domain resource. Among them, the encoded HARQ feedback information can reflect the demodulation statuses of multiple different TBs;

[0241] The HARQ feedback receiver, such as a base station, decodes the received HARQ feedback information using the demodulation method corresponding to the predetermined coding to obtain a decoded sequence. The decoded decoded sequence can reflect the demodulation status of multiple different transport blocks (TBs).

[0242] In some embodiments, if the decoded sequence is a preset sequence, it is determined that multiple different TBs have been successfully received.

[0243] The preset sequence can be determined according to the predetermined coding method. For example, if "1" in the result generated by the predetermined coding indicates that multiple different TBs have been successfully received, the preset sequence can be set to "1".

[0244] Specifically, as shown in Figure 9 The HARQ feedback sender, such as an MTC user device, can perform predetermined coding, such as logical AND processing, on the HARQ feedbacks respectively corresponding to TB1 to TB4, so as to obtain the HARQ feedback information reflecting the overall demodulation situation of TB1 to TB4. The HARQ feedback can use "0" to indicate demodulation failure and "1" to indicate demodulation success. For example, if the HARQ feedbacks of TB1, TB2, TB3, and TB4 are "1", indicating demodulation success, then after performing the bitwise logical AND operation on all the HARQ feedbacks, the HARQ feedback information "1" is obtained, indicating that the demodulations of TB1, TB2, TB3, and TB4 are all successful. Here, the preset sequence can be set to "1".

[0245] When the preset sequence is "1", and the decoded sequence obtained after the HARQ feedback receiver demodulates the received HARQ feedback information is "0", which is the same as the preset sequence, it is considered that at least one TB has been successfully demodulated.

[0246] In some embodiments, if the decoded sequence is not the preset sequence, it is determined that at least one TB has not been successfully demodulated.

[0247] Taking the above Figure 9 preset sequence of "1" as an example, when one of the HARQ feedbacks of TB1, TB2, TB3, and TB4 is "0", then after performing the bitwise logical AND operation on all the HARQ feedbacks, the HARQ feedback information "0" is obtained, indicating that at least one of TB1, TB2, TB3, and TB4 has a demodulation failure.

[0248] When the decoded sequence obtained after the HARQ feedback receiver demodulates the received HARQ feedback information is "0", which is inconsistent with the preset sequence, it is considered that at least one TB has not been successfully demodulated.

[0249] In some embodiments, if at least one TB has not been successfully demodulated, the entire TB alternating transmission unit is retransmitted.

[0250] Here, after determining that at least one TB in the TB alternating transmission unit fails to be demodulated successfully, the TB alternating transmission unit can be retransmitted;

[0251] In some embodiments, a demodulation method of BPSK or QPSK is used to decode the HARQ feedback information to obtain a decoded sequence.

[0252] The predetermined coding can perform a bitwise logical AND operation on the HARQ feedbacks of multiple different TBs to obtain 1-bit HARQ feedback information; or the HARQ feedbacks of multiple different TBs can be grouped to perform a bitwise logical AND operation of the HARQ feedback for group HARQ feedback; the different group HARQ feedbacks are combined to obtain 2-bit HARQ feedback information.

[0253] For the 1-bit HARQ feedback information generated after the predetermined coding, BPSK modulation can be used for transmission. Therefore, at the HARQ feedback receiving end, a demodulation method of BPSK can be used to decode the HARQ feedback information.

[0254] For the 2-bit HARQ feedback information generated after the predetermined coding, QPSK modulation can be used for transmission. Therefore, at the HARQ feedback receiving end, a demodulation method of QPSK can be used to decode the HARQ feedback information.

[0255] In this embodiment, for the HARQ feedback of multiple different TBs with such alternating transmission, the HARQ feedback receiving end receives the HARQ feedbacks of multiple different TBs to perform the HARQ feedback information of the predetermined coding, and then judges the demodulation status of multiple different TBs. In this way, it is possible to avoid the HARQ feedbacks of different TBs occupying the same time domain resources, resulting in the complexity introduced by the need to transmit orthogonally in the time domain, thereby reducing the processing complexity of the HARQ feedback sending end when sending HARQ feedback. Especially for terminals such as MTC with relatively weak processing capabilities, it is possible to reduce the phenomenon of transmission failure caused by the high transmission complexity of HARQ feedback, and improve the transmission success rate of HARQ feedback.

[0256] The following provides several specific examples in combination with any of the above embodiments:

[0257] Example 1: Serial HARQ feedback transmission;

[0258] Core of the solution: Only one TB's HARQ feedback is allowed to be transmitted at the same time.

[0259] As Figure 6 shown, in an alternating transmission cycle, the HARQ feedback of the first TB still follows the original timing. For example, the HARQ feedback starts 4 ms after the end of TB1.

[0260] For the HARQ feedback of TBs after TB1, it can only be carried out after the HARQ feedback transmission of the previous TB is completed.

[0261] Solution 2: Alternating HARQ feedback transmission;

[0262] Core of the solution: That is, only one HARQ feedback transmission is allowed at the same time.

[0263] Similar to the idea of the alternating transmission mechanism of the same TB, the PUCCH carrying the HARQ feedback corresponding to each TB is alternately repeated. For example Figure 7 , the S - time repeated transmission of the HARQ feedback corresponding to TB1 can be transmitted first, and then the HARQ feedback corresponding to TB2 is transmitted in turn until the S - time repeated transmission of the HARQ feedback corresponding to the last TB. After the N - time repeated transmission of each TB is completed, the S - time repeated transmission of the remaining number of repetitions is carried out until the HARQ feedback corresponding to all TBs reaches the configured number of repeated transmissions. Here, the number of repeated transmissions S of each HARQ feedback included in each round of alternating transmission can be defined as the size of the HARQ feedback alternating transmission unit. The size S of the HARQ feedback alternating transmission unit can be determined in the following ways;

[0264] Method 1: Configured by higher - layer signaling;

[0265] Method 2: Establish a mapping relationship between the size of the HARQ feedback alternating transmission unit and the size of the downlink TB alternating transmission unit, and the size S of the HARQ feedback alternating transmission unit can be derived according to the configured size of the downlink TB alternating transmission unit; for example, S can be configured to be equal to the size of the TB alternating transmission unit;

[0266] Method 3: Determined according to other characteristics of the PUCCH transmission. For example, S is equal to the size of the PUCCH frequency - hopping unit;

[0267] The entire HARQ feedback alternating transmission takes the end time point of the transmission of the last TB as a reference point, and starts to transmit after a certain time interval, such as 4 ms, after the transmission of the last TB.

[0268] Solution 3: HARQ bound transmission;

[0269] At this time, the HARQ feedbacks of several TBs can be bound and then transmitted in one PUCCH. The binding method can be: as Figure 9 shown, the HARQ feedbacks of all TBs are logically added to form 1 bit, and then transmitted in the PUCCH using BPSK modulation. Or, as Figure 10As shown in the figure, the multi-scheduled TBs are divided into two groups. The HARQ feedbacks of the TBs within each group are logically added to form a 1-bit feedback, and a total of 2 bits are formed for feedback, which are then transmitted in the PUCCH using QPSK modulation.

[0270] For the HARQ feedback time after binding, the end time point of the transmission of the last TB can be used as a reference point. After a certain time interval, such as 4 ms, after the transmission of the last TB, the transmission starts.

[0271] In the alternate transmission, the traditional one-to-one feedback is no longer supported, and only HARQ bound transmission is supported. That is, HARQ bound transmission does not need to be configured before use, and HARQ bound transmission is the default feedback method in the alternate transmission.

[0272] The embodiment of the present invention also provides a transmission device for HARQ feedback. Figure 12 It is a schematic structural diagram of the transmission device 100 for HARQ feedback provided by the embodiment of the present invention; as Figure 12 shown, the device includes:

[0273] A first transmission module 110, configured to transmit HARQ feedback. Among them, for multiple different transport blocks TBs in the alternate transmission, different time domain resources are used to transmit the HARQ feedback of different TBs;

[0274] Among them, the alternate transmission of multiple different TBs includes: circularly transmitting the TB alternate transmission unit until the total number of repeated transmissions configured for each TB is satisfied, where the TB alternate transmission unit includes N repeated transmissions of different TBs, and N is greater than 0 and less than the total number of repeated transmissions configured.

[0275] In one embodiment, as Figure 13 shown, the first transmission module 110 includes:

[0276] A first transmission sub-module 111, configured to sequentially transmit M repeated transmissions of the HARQ feedback of each TB, where M is the total number of repeated transmissions of the HARQ feedback of each TB.

[0277] In one embodiment, as Figure 14 shown, the first transmission module 110 includes:

[0278] A second transmission sub-module 112, configured to alternately transmit the HARQ feedback of different TBs.

[0279] In one embodiment, as Figure 15 shown, the first transmission module 110 includes:

[0280] The third transmission sub-module 113 is configured to cyclically transmit the HARQ feedback alternating transmission unit until the total number of retransmissions configured for each HARQ feedback is satisfied;

[0281] Wherein, the HARQ feedback alternating transmission unit includes the number of retransmissions X of each HARQ, and X is greater than 0 and less than the total number of retransmissions configured for each HARQ feedback.

[0282] In one embodiment, as Figure 16 shown, the apparatus 100 further includes:

[0283] The repetition number determination module 120 is configured to determine the number of retransmissions of the HARQ feedback in the HARQ feedback alternating transmission unit according to the received high-layer signaling;

[0284] Or,

[0285] Determine the number of retransmissions of the HARQ feedback in a HARQ feedback alternating transmission unit according to the number of retransmissions of the TB in a TB alternating transmission unit;

[0286] Or,

[0287] Determine the number of transmissions of the HARQ feedback in a HARQ feedback alternating transmission unit according to the frequency hopping unit of the physical uplink control channel PUCCH;

[0288] Wherein, the frequency hopping unit is used to configure the number of consecutive retransmissions of the PUCCH in a frequency domain.

[0289] In one embodiment, as Figure 17 shown, the first transmission module 110 includes:

[0290] The fourth transmission sub-module 114 is configured to transmit different HARQ feedbacks by using different time domain resources after the first time interval for completing the transmission of the first TB;

[0291] Or,

[0292] Transmit different HARQ feedbacks by using different time domain resources after the second time interval for completing the transmission of the last TB.

[0293] In one embodiment, as Figure 18 shown, the first transmission module 110 includes:

[0294] The fifth transmission sub-module 115 is configured to transmit the HARQ feedbacks of different TBs on the physical uplink control channel PUCCH by using different time domain resources.

[0295] An embodiment of the present invention further provides a transmission apparatus for HARQ feedback, Figure 19Schematic diagram of the composition structure of the HARQ feedback transmission device 200 provided by an embodiment of the present invention; as Figure 19 shown, the device includes:

[0296] A first generation module 210, configured to perform predetermined encoding on HARQ feedbacks of multiple different transport blocks TB transmitted alternately, to generate HARQ feedback information;

[0297] A second transmission module 220, configured to transmit the HARQ feedback information

[0298] Among them, alternately transmitting multiple different TBs includes: circularly transmitting a TB alternate transmission unit until the total number of retransmission times configured for each TB is satisfied, where the TB alternate transmission unit includes N retransmission times of different TBs, and N is greater than 0 and less than the total number of retransmission times configured.

[0299] In one embodiment, as Figure 20 shown, the first generation module 210 includes: a first generation sub-module 211, configured to perform a bitwise logical AND operation on the HARQ feedbacks of multiple different TBs to obtain HARQ feedback information.

[0300] In one embodiment, as Figure 21 shown, the second transmission module 220 includes: a first modulation module 221, configured to modulate the HARQ feedback information using BPSK;

[0301] The second transmission module 220 includes: a sixth transmission sub-module 222, configured to transmit the HARQ feedback information modulated using BPSK.

[0302] In one embodiment, as Figure 22 shown, the first generation module 210 includes:

[0303] A second generation sub-module 212, configured to perform a bitwise logical AND operation on the HARQ feedbacks of multiple different TBs in groups to obtain different group HARQ feedbacks;

[0304] A third generation sub-module 213, configured to combine different group HARQ feedbacks to obtain HARQ feedback information.

[0305] In one embodiment, as Figure 23 shown, the second transmission module 220 includes: a second modulation module 223, configured to modulate the HARQ feedback information using QPSK;

[0306] The second transmission module 220 includes: a seventh transmission sub-module 224, configured to transmit the HARQ feedback information modulated using QPSK.

[0307] In one embodiment, asFigure 24 As shown, the second transmission module 220 includes:

[0308] The eighth transmission sub-module 225 is used to transmit HARQ feedback information by using the physical uplink control channel PUCCH, and the HARQ feedback information is transmitted on the PUCCH resource after the third time interval for completing the transmission of the last TB.

[0309] An embodiment of the present invention further provides a transmission device for HARQ feedback. Figure 25 It is a schematic structural diagram of the transmission device 300 for HARQ feedback provided by the embodiment of the present invention; as Figure 25 shown, the device includes: The device 300 includes:

[0310] The first receiving module 310 is used to receive HARQ feedback information obtained by performing predetermined coding on the HARQ feedback for multiple alternately transmitted different transport blocks (TBs).

[0311] The first decoding module 320 is used to decode the HARQ feedback information according to the demodulation method corresponding to the predetermined coding to obtain a decoded sequence.

[0312] The first determination module 330 is used to determine the demodulation status of multiple different TBs according to the decoded sequence.

[0313] Among them, alternately transmitting multiple different TBs includes: circularly transmitting the TB alternating transmission unit until the total number of repeated transmissions configured for each TB is satisfied, where the TB alternating transmission unit includes N repeated transmissions of different TBs, and N is greater than 0 and less than the total number of repeated transmissions configured.

[0314] In one embodiment, as Figure 26 shown, the first determination module 330 includes:

[0315] The first determination sub-module 331 is used to determine that multiple different TBs are all successfully received if the decoded sequence is a preset sequence.

[0316] In one embodiment, as Figure 27 shown, the first determination module 330 includes:

[0317] The second determination sub-module 332 is used to determine that at least one TB fails to be demodulated successfully if the decoded sequence is not a preset sequence.

[0318] In one embodiment, as Figure 28 shown, the device 300 further includes:

[0319] The third transmission module 340 is used to re-transmit the entire TB alternating transmission unit if at least one TB fails to be demodulated successfully.

[0320] In one embodiment, as Figure 29 shown, the first decoding module 320 includes:

[0321] The first decoding sub-module 321 is configured to decode the HARQ feedback information by using a binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK) demodulation method to obtain a decoded sequence.

[0322] In an exemplary embodiment, the first transmission module 110, the repetition number determination module 120, the first generation module 210, the second transmission module 220, the first receiving module 310, the first decoding module 320, the first determination module 330, and the third transmission module 340, etc. may be implemented by one or more central processing units (CPUs, Central Processing Unit), graphics processing units (GPUs, Graphics Processing Unit), baseband processors (BPs, baseband processor), application specific integrated circuits (ASICs, Application Specific Integrated Circuit), DSPs, programmable logic devices (PLDs, Programmable Logic Device), complex programmable logic devices (CPLDs, Complex Programmable LogicDevice), field programmable gate arrays (FPGAs, Field-Programmable Gate Array), general purpose processors, controllers, microcontroller units (MCUs, Micro Controller Unit), microprocessors (Microprocessor), or other electronic components. The first transmission module 110, the second transmission module 220, and the third transmission module 340, etc. may also be implemented in combination with one or more radio frequency (RF, radio frequency) antennas for performing the foregoing method.

[0323] Figure 30 FIG. [FIG. number] is a block diagram of a device 3000 for HARQ feedback according to an exemplary embodiment. For example, the device 3000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0324] Referring to Figure 30 , the device 3000 may include one or more of the following components: a processing component 3002, a memory 3004, a power component 3006, a multimedia component 3008, an audio component 3010, an input / output (I / O) interface 3012, a sensor component 3014, and a communication component 3016.

[0325] The processing component 3002 generally controls the overall operation of the device 3000, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 3002 may include one or more modules to facilitate the interaction between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate the interaction between the multimedia component 3008 and the processing component 3002.

[0326] The memory 3004 is configured to store various types of data to support the operation of the device 3000. Examples of such data include instructions for any application or method operating on the device 3000, contact data, phone book data, messages, pictures, videos, etc. The memory 3004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disks, or optical disks.

[0327] The power component 3006 provides power to the various components of the device 3000. The power component 3006 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 3000.

[0328] The multimedia component 3008 includes a screen that provides an output interface between the device 3000 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operations. In some embodiments, the multimedia component 3008 includes a front camera and / or a rear camera. When the device 3000 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0329] The audio component 3010 is configured to output and / or input audio signals. For example, the audio component 3010 includes a microphone (MIC), which is configured to receive external audio signals when the device 3000 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 3004 or transmitted via the communication component 3016. In some embodiments, the audio component 3010 further includes a speaker for outputting audio signals.

[0330] The I / O interface 3012 provides an interface between the processing component 3002 and a peripheral interface module, and the peripheral interface module may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a power button, and a lock button.

[0331] The sensor component 3014 includes one or more sensors for providing status assessments of various aspects of the device 3000. For example, the sensor component 3014 can detect the on / off state of the device 3000, the relative positioning of components, such as the display and keypad of the device 3000. The sensor component 3014 can also detect a change in the position of the device 3000 or a component of the device 3000, the presence or absence of user contact with the device 3000, the orientation or acceleration / deceleration of the device 3000, and the temperature change of the device 3000. The sensor component 3014 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 3014 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 3014 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0332] The communication component 3016 is configured to facilitate communication between the device 3000 and other devices in a wired or wireless manner. The device 3000 can access a wireless network based on communication standards, such as Wi-Fi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 3016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3016 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0333] In an exemplary embodiment, the apparatus 3000 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, microcontrollers, microprocessors, or other electronic components for performing the above method.

[0334] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory 3004 including instructions, is also provided. The above instructions may be executed by a processor 3020 of the apparatus 3000 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0335] Those skilled in the art will readily conceive of other implementations of the embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of the present invention, which follow the general principles of the embodiments of the present invention and include common general knowledge or conventional technical means in the technical field not disclosed in the embodiments of the present invention. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the embodiments of the present invention are pointed out by the following claims.

[0336] It should be understood that the embodiments of the present invention are not limited to the exact structures described above and shown in the drawings, and various modifications and changes may be made without departing from its scope. The scope of the embodiments of the present invention is only limited by the appended claims.

Claims

1. A method for receiving Hybrid Automatic Repeat reQuest (HARQ) feedback, which is executed by a base station, characterized in that The method includes: For multiple different transport blocks (TBs) transmitted alternately, using different time-domain resources to receive HARQ feedbacks of different said TBs; Wherein, the alternate transmission of multiple different TBs includes: cyclically receiving a TB alternate transmission unit until the total number of repeated transmissions configured for each said TB is satisfied, wherein the TB alternate transmission unit includes N repeated transmissions of different said TBs, and N is greater than 0 and less than the total number of repeated transmissions configured; The using different time-domain resources to receive HARQ feedbacks of different said TBs includes: Using different said time-domain resources after a first time interval when the transmission of the first said TB is completed to receive different said HARQ feedbacks; or, using different said time-domain resources after a second time interval when the transmission of the last said TB is completed to receive different said HARQ feedbacks; The receiving HARQ feedbacks of different said TBs includes: Receiving M repeated transmissions of the HARQ feedback of each said TB, where M is the total number of repeated transmissions configured for the HARQ feedback of each said TB, and M is a positive integer.

2. A method for receiving Hybrid Automatic Repeat reQuest (HARQ) feedback, which is executed by a base station, characterized in that, The method includes: For multiple different transport blocks (TBs) transmitted alternately, receiving HARQ feedback information, where the HARQ feedback information is generated by the terminal through pre-determined encoding of the HARQ feedbacks of the multiple different TBs; Wherein, the alternate transmission of multiple different TBs includes: cyclically receiving a TB alternate transmission unit until the total number of repeated transmissions configured for each said TB is satisfied, wherein the TB alternate transmission unit includes N repeated transmissions of different said TBs, and N is greater than 0 and less than the total number of repeated transmissions configured; The HARQ feedback information is obtained by the terminal through a bitwise logical AND operation on the HARQ feedbacks of multiple different TBs.

3. A receiving device for Hybrid Automatic Repeat reQuest (HARQ) feedback, characterized in that, The device includes: A transceiver module, configured to use different time-domain resources to receive HARQ feedbacks of different said TBs for multiple different transport blocks (TBs) transmitted alternately; Wherein, the alternate transmission of multiple different TBs includes: cyclically receiving a TB alternate transmission unit until the total number of repeated transmissions configured for each said TB is satisfied, wherein the TB alternate transmission unit includes N repeated transmissions of different said TBs, and N is greater than 0 and less than the total number of repeated transmissions configured; The transceiver module is further configured to receive different said HARQ feedbacks using different said time-domain resources after a first time interval when the transmission of the first said TB is completed; or, receive different said HARQ feedbacks using different said time-domain resources after a second time interval when the transmission of the last said TB is completed; The transceiver module is further configured to receive M repeated transmissions of the HARQ feedback of each said TB, where M is the total number of repeated transmissions configured for the HARQ feedback of each said TB, and M is a positive integer.

4. A receiving device for HARQ feedback, characterized in that The device includes: A transceiver module, configured to receive HARQ feedback information for multiple different transport blocks (TBs) transmitted alternately, where the HARQ feedback information is generated by the terminal through pre-determined encoding of the HARQ feedbacks of the multiple different TBs; Among them, the alternately transmitting multiple different TBs includes: cyclically receiving the TB alternate transmission unit until the total number of repeated transmissions configured for each of the TBs is satisfied, where the TB alternate transmission unit includes N repeated transmissions of the different TBs, and N is greater than 0 and less than the configured total number of repeated transmissions; The HARQ feedback information is obtained by performing a bitwise logical AND operation on the HARQ feedbacks of multiple different TBs by the terminal.

5. A storage medium, on which an executable program is stored, characterized in that, When the executable program is executed by the processor, the steps of the method according to claim 1 or 2 are implemented.

6. A communication device, comprising a processor, a memory, and an executable program stored on the memory and capable of being run by the processor, characterized in that When the processor runs the executable program, the steps of the method according to claim 1 or 2 are executed.

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