Signal transmission method, device, network device, and storage medium

Abstract

This application provides a signal transmission method and apparatus, which includes transmitting an uplink grant (UL grant) to a terminal, the UL grant being used to indicate that a signal transmission mechanism and / or signal resource has been changed.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application bearing application number 201910706591.7, filed with the China Patent Office on July 31, 2019, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of communications, for example, to a signal transmission method, an apparatus, a network device, and a storage medium. [Background technology]

[0003] 5GNR (5th-Generation New Radio) is a global 5G standard designed based on OFDM (Orthogonal Frequency Division Multiplexing) new radio access technology, and is also the basis of the next generation of very important cellular mobile technology. NR introduces URLLC (Ultra Reliable Low Latency Communication) service, which requires high transmission reliability and immediacy. eMBB (Enhanced Mobile Broadband) service has lower requirements for transmission reliability and immediacy than URLLC service. Therefore, during transmission, URLLC service is given higher transmission priority than eMBB service, and similarly, HARQ-ACK (Hybrid Automatic Repeat reQuest Acknowledgement) codebook corresponding to URLLC service also has higher priority than HARQ-ACK codebook corresponding to eMBB service.

[0004] Therefore, in one UL slot, when there is time domain overlap between a PUCCH (Physical Uplink Control Channel) of a HARQ-ACK codebook corresponding to one eMBB service and a PUCCH of a HARQ-ACK codebook corresponding to one URLLC service (including partial time domain overlap), it is necessary to provide a reliable method for ensuring the transmission of two types of codebook resources, which can ensure that the transmission of lower priority resources does not affect the reliability and immediacy of higher priority resources, and can also ensure that the lower priority resources are transmitted in an appropriate manner. Summary of the Invention [Means for solving the problem]

[0005] The embodiment of the present application is Transmitting an Up Link grant (UL grant), The UL grant is used to indicate that the transmission mechanism and / or resources of the signal have changed. A method for transmitting a signal is provided.

[0006] The embodiment of the present application is receiving a UL grant; transmitting the signal based on the UL grant; The UL grant is used to indicate that the transmission mechanism and / or resources of the signal have changed. A method for transmitting a signal is provided.

[0007] The embodiment of the present application is Transmitting a first physical downlink control channel (PDCCH), The first PDCCH is used to indicate that the resource of the signal has been changed; A method for transmitting a signal is provided.

[0008] The embodiment of the present application is receiving a first PDCCH; Transmitting the resource according to an indication of a signal transmission scheme in the first PDCCH; The first PDCCH is used to indicate that the resource of the signal has been changed; A method for transmitting a signal is provided.

[0009] The embodiment of the present application is a first transmitting module for transmitting an uplink grant (UL grant); The UL grant is used to indicate that the transmission mechanism and / or resources of the signal have changed. A signal transmission device is provided.

[0010] The embodiment of the present application is a first receiving module for receiving a UL grant; a first transmission module for transmitting the signal based on the UL grant; The UL grant is used to indicate that the transmission mechanism and / or resources of the signal have changed. A signal transmission device is provided.

[0011] The embodiment of the present application is a second transmitting module for transmitting a first PDCCH; The first PDCCH is used to indicate that the resource of the signal has been changed; A signal transmission device is provided.

[0012] The embodiment of the present application is a second receiving module for receiving the first PDCCH; a second transmission module for transmitting the resources according to an indication of a signal transmission scheme in the first PDCCH; The first PDCCH is used to indicate that the resource of the signal has been changed; A signal transmission device is provided.

[0013] The embodiment of the present application is A signal transmission device according to any one of the embodiments of the present application is provided. A signal transmission system is provided.

[0014] The embodiment of the present application is A terminal according to an embodiment of the present application and a base station according to an embodiment of the present application, A communication system is provided.

[0015] The embodiment of the present application is A computer program is stored in the The computer program, when executed by a processor, implements a method according to any of the embodiments of the present application. Provide a storage medium. Effect of the Invention

[0016] Embodiments of the present application can use parameters to modify the signal transmission mechanism or resources, improving the reliability of a single signal transmission, and for multiple signal transmissions where collisions may occur, embodiments of the present application can also avoid dropping signals to avoid collisions. [Brief description of the drawings]

[0017] [Figure 1] 2 is a flowchart of a signal transmission method according to an embodiment of the present application. [Diagram 2] 4 is a flowchart of a signal transmission method according to another embodiment of the present application. [Diagram 3] 4 is a flowchart of a signal transmission method according to another embodiment of the present application. [Figure 4] 4 is a flowchart of a signal transmission method according to another embodiment of the present application. [Diagram 5] 1 is a structural schematic diagram of a signal transmission device according to an embodiment of the present application; [Figure 6] FIG. 2 is a structural schematic diagram of a signal transmission device according to another embodiment of the present application. [Figure 7] FIG. 2 is a structural schematic diagram of a signal transmission device according to another embodiment of the present application. [Figure 8] FIG. 2 is a structural schematic diagram of a signal transmission device according to another embodiment of the present application. [Figure 9] FIG. 2 is a structural schematic diagram of a terminal according to an embodiment of the present application. [Figure 10] FIG. 2 is a structural schematic diagram of a base station according to an embodiment of the present application; [Figure 11] FIG. 1 is a structural schematic diagram of a communication system according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the embodiments of the present application will be described in detail with reference to the drawings. It should be noted that, unless inconsistent, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0019] FIG. 1 is a flow chart of a signal transmission method in one embodiment of the present application, as shown in FIG. 1, the method may include the following steps:

[0020] In step S11, an uplink grant (UL grant) is transmitted.

[0021] The UL grant is used to indicate that the transmission mechanism of the signal and / or the resources of the signal have changed.

[0022] In one embodiment, the signal resources are resources used by the transmission signal, such as time domain resources, frequency domain resources, etc.

[0023] In one embodiment, the UL grant may be a PDCCH or Downlink Control Information (DCI) for scheduling a Physical Uplink Shared Channel (PUSCH).

[0024] In one embodiment, a UL grant is used to indicate that the signal transmission mechanism has changed.

[0025] In one embodiment, a UL grant is used to indicate that the resource for transmitting the signal has changed.

[0026] In one embodiment, the UL grant is used to indicate that the signal transmission mechanism and resources transmitting the signal have changed.

[0027] In a specific example, the transmission channel of the signal overlaps or partially overlaps in the time domain with the transmission channel of another signal, and the priority of the signal is lower than that of the other signal.

[0028] In another embodiment, the transmission channels of the signals do not overlap or have partial time domain overlap with the transmission channels of other signals.

[0029] In a specific example, the transmission mechanism of the signal and the resources on which the signal is transmitted are configured by a base station.

[0030] In a specific example, one or more parameters in the UL grant are set to specific values ​​to indicate that the signal transmission mechanism has changed.

[0031] In a specific example, one or more parameters in the UL grant are set to a particular value to indicate that the resource carrying the signal has changed.

[0032] In a specific example, one or more parameters in the UL grant are set to specific values ​​to indicate that the signaling mechanism and resources transmitting the signaling have changed.

[0033] In one embodiment, an Up Link Shared Channel indicator (UL-SCH indicator), which is a parameter in the UL grant, is set to 0, and a Channel State Information request (CSI request), which is a parameter in the UL grant, is set to 0.

[0034] In one embodiment, a parameter in the UL grant, UL-SCH indicator, is 0, a parameter in the UL grant, CSI request, is 0, and Cyclic Redundancy Check (CRC) bits of the UL grant are scrambled by a non-Semi-Persistent Channel State Information Radio Network Tempory Identity (SP-CSI-RNTI).

[0035] In the related art, if the parameter UL-SCH indicator in the UL grant is 0 and the parameter CSI request is 0 (and the CRC check bits of the UL grant are scrambled with a non-semi-persistent CSI Radio Network Temporary Identity SP-CSI-RNTI), this indicates an error condition and such a setting is prohibited. In the embodiment of the present application, indicating that the signal transmission mechanism and / or the resource transmitting the signal has been changed with the prohibited parameter value in the UL grant does not affect the function of the original parameter in the UL grant, and thus the said parameter does not have the said value in the related art, and therefore has no impact on the related art. The parameter CSI request includes multiple bits, and the parameter CSI request being 0 may mean that all bits of the parameter are set to 0.

[0036] In one embodiment, all parameters in the UL grant other than the parameter redundancy version RV (Redundancy Version) and the parameter hybrid automatic repeat request identity HARQ-ID (Hybrid Automatic Repeat request Identity Document) are valid parameters.

[0037] In a specific example, a parameter combination in a UL grant can be redefined, and the redefined parameter combination is used to indicate that the signal transmission mechanism and / or resources transmitting the signal have changed.

[0038] In one embodiment, the parameter RV and the parameter UL-SCH indicator in the UL grant can be redefined to indicate that the transmission mechanism of the signal and / or the resource transmitting the signal have been changed. For example, if the parameter RV is 2 bits long, one or more bits in the parameter RV are promised to be used, and one of a plurality of value states of the bits is promised to be used, the UL grant indicates at least a request for modification of the original transmission mechanism of the signal to be transmitted and / or the resource transmitting the signal. For example, if the parameter RV is 2 bits long, and one of four states of the parameter RV value "00", "01", "10" or "11" is promised to be used, the UL grant indicates at least a request for modification of the original transmission mechanism of the signal and / or the resource transmitting the signal.

[0039] In one embodiment, the parameters UL-SCH indicator and HARQ-ID in the UL grant may be redefined to indicate that the transmission mechanism of the signal and / or the resource for transmitting the signal has been changed. For example, if the parameter HARQ-ID is 4 bits long and one or more bits in the HARQ-ID are promised to be used and one of a plurality of value states of the bits is promised to be used, this indicates that the UL grant at least requests modification of the original transmission mechanism of the signal pending transmission and / or the resource for transmitting the signal.

[0040] In one embodiment, the parameters UL-SCH indicator, RV and HARQ-ID in the UL grant can be redefined to indicate that the transmission mechanism of the signal and / or the resource for transmitting the signal has been changed. When the parameters RV and HARQ-ID are 6 bits in total, and one or more of the 6 bits are promised to be used, and one of a plurality of value states of the bits is promised to be used, this indicates that the UL grant at least indicates a modification of the transmission mechanism of the signal source and / or the resource for transmitting the signal.

[0041] In the UL grant, the redefinition can indicate that the UL grant indicates the modification of the changed parameters of the transmission mechanism of the signal and / or the resource for transmitting the signal, and other parameters in the UL grant (e.g., parameters other than the above-mentioned reinterpreted parameters in the DCI for scheduling PUSCH in TS38.212Vf50 version, especially the parameters Modulation and coding scheme, beta_offset indicator, and Time domain resource assignment) can have their original meanings and are valid, and do not need to be reinterpreted. The UE transmits the signal in the manner indicated by the other valid parameters in the UL grant according to the indication of the other valid parameters in the UL grant, in which case the signal is transmitted via the PUSCH indicated by the UL grant (and there is no uplink data on the PUSCH). The original PUCCH transmission mechanism and PUCCH resource of the signal are discarded.

[0042] In one embodiment, the transmission mechanism includes at least one of transmitting the signal via a physical uplink control channel (PUCCH) and transmitting the signal via a physical uplink shared channel (PUSCH).

[0043] The resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal.

[0044] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a physical resource block (PRB) position, a bandwidth part (BWP) position, and a carrier position.

[0045] In one embodiment, the signal includes one of a Hybrid Automatic Repeat Request Acknowledgement / Negative Acknowledgement HARQ-ACK codebook, a Scheduling Request SR (Scheduling Request), Channel State Information CSI, and User Equipment UE (User Equipment) data.

[0046] The signal transmission method according to the embodiment of the present application applies to scenes where two channels overlap in the time domain as well as to scenes where there is only a single channel, essentially modifying the original transmission mechanism and / or transmission resources of one signal, regardless of the cause of the modification.

[0047] In one embodiment, when the signal is a HARQ-ACK codebook, the UL grant is used to indicate that the transmission of the HARQ-ACK codebook via a PUCCH is modified to the transmission of the HARQ-ACK codebook via a PUSCH scheduled by the UL grant.

[0048] FIG. 2 is a flow chart of a signal transmission method in another embodiment of the present application, as shown in FIG. 2, it includes the following steps:

[0049] In step S21, a UL grant is received.

[0050] In step S22, the signal is transmitted based on the UL grant.

[0051] The UL grant is used to indicate that the transmission mechanism of the signal and / or the resources of the signal have changed.

[0052] In one embodiment, the parameter UL-SCH indicator in the UL grant is 0, and the parameter CSI request in the UL grant is 0.

[0053] In one embodiment, the parameter UL-SCH indicator in the UL grant is 0, the parameter CSI request in the UL grant is 0, and the CRC check bits of the UL grant are scrambled with a non-semi-persistent CSI Radio Network Temporary Identity SP-CSI-RNTI.

[0054] In one embodiment, all parameters other than the parameter RV and the parameter HARQ-ID in the UL grant are valid parameters.

[0055] In one embodiment, the transmission mechanism includes at least one of transmitting the signal via a PUCCH and transmitting the signal via a PUSCH.

[0056] The resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal.

[0057] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a PRB position, a BWP position, and a carrier position.

[0058] In one embodiment, the signal includes one of a HARQ-ACK codebook, an SR, a CSI, and UE data.

[0059] In one embodiment, when the signal is a HARQ-ACK codebook, the UL grant is used to indicate that the transmission of the HARQ-ACK codebook via a PUCCH is modified to the transmission of the HARQ-ACK codebook via a PUSCH scheduled by the UL grant.

[0060] FIG. 3 is a flow chart of a signal transmission method according to another embodiment of the present application. As shown in FIG. 3, the signal transmission method includes the following steps:

[0061] In step S31, the first PDCCH is transmitted.

[0062] The first PDCCH is used to indicate that the resource of the signal has been changed.

[0063] In one embodiment, a resource of a signal may refer to a resource for transmitting the signal.

[0064] In one embodiment, the transmission channel of said signal overlaps or partially overlaps with the transmission channel of another signal.

[0065] In one embodiment, the resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal.

[0066] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a PRB position, a BWP position, and a carrier position.

[0067] In one embodiment, the signal includes one of a HARQ-ACK codebook, an SR, a CSI, and UE data.

[0068] In one embodiment, if the signal is a HARQ-ACK codebook, a downlink assignment index counter value DAI counter of the first PDCCH is set to a value of a DAI counter of a second PDCCH.

[0069] Here, the second PDCCH is the last PDCCH among the PDCCHs corresponding to at least one PDSCH corresponding to the HARQ-ACK codebook.

[0070] In one embodiment, the first PDCCH provides new resources for transmitting signals.

[0071] If the signal is a HARQ-ACK codebook, the first PDCCH provides the uplink slot (UL slot) position (or uplink sub-slot) and / or PUCCH resource in which the HARQ-ACK codebook is located during transmission.

[0072] When the signal is a HARQ-ACK codebook, when the receiving end receives one PDCCH and the DAI counter value in the PDCCH is equal to the DAI counter value in the last PDCCH corresponding to the HARQ-ACK codebook (here, the last PDCCH corresponding to the HARQ-ACK codebook is an abbreviation for the last PDCCH among the PDCCHs corresponding to at least one PDSCH corresponding to the HARQ-ACK codebook, and the same applies below), the receiving end considers the PDCCH to be the first PDCCH for modifying the resource of the HARQ-ACK codebook.

[0073] In one embodiment, all parameters other than the DAI counter, which is a parameter in the first PDCCH, are valid parameters.

[0074] Other valid parameters in the first PDCCH can still serve the original indicating function.

[0075] In one embodiment, when the signal is a HARQ-ACK codebook, a transmission method of HARQ-ACK information corresponding to a PDSCH scheduled by the first PDCCH is a method of concatenating the HARQ-ACK information corresponding to a PDSCH scheduled by the first PDCCH to the end of the HARQ-ACK codebook.

[0076] Alternatively, when the signal is a HARQ-ACK codebook and includes HARQ-ACK information corresponding to a semi-static scheduling physical downlink shared channel (SPS PDSCH), a transmission method of the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is a method of concatenating the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH after the first type of HARQ-ACK information and before the second type of HARQ-ACK information, where the first type of HARQ-ACK information is the HARQ-ACK information corresponding to the PDSCH scheduled by the PDCCH in the HARQ-ACK codebook, and the second type of HARQ-ACK information is the HARQ-ACK information corresponding to the SPS PDSCH corresponding to the HARQ-ACK codebook.

[0077] FIG. 4 is a flowchart of a signal transmission method of another embodiment of the present application. As shown in FIG. 4, the signal transmission method includes the following steps:

[0078] In step S41, a first PDCCH is received.

[0079] In step S42, the resources are transmitted according to an indication of a signal transmission method in the first PDCCH.

[0080] The first PDCCH is used to indicate that the resource of the signal has been changed.

[0081] In one embodiment, the resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal.

[0082] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a PRB position, a BWP position, and a carrier position.

[0083] In one embodiment, the signal includes one of a HARQ-ACK codebook, an SR, a CSI, and UE data.

[0084] In one embodiment, if the signal is a HARQ-ACK codebook, the DAI counter of the first PDCCH is set to a value of the DAI counter of a second PDCCH.

[0085] Here, the second PDCCH is the last PDCCH among the PDCCHs corresponding to at least one PDSCH corresponding to the HARQ-ACK codebook.

[0086] In one embodiment, all parameters other than the DAI counter, which is a parameter in the first PDCCH, are valid parameters (e.g., parameters other than the above-mentioned reinterpreted parameters in the DCI for scheduling PDSCH in the TS38.212 Vf50 version, in particular the parameter PUCCH resource indicator, the parameter PDSCH-to-HARQ_feedback timing indicator).

[0087] In one embodiment, if the signal is a HARQ-ACK codebook, the transmission manner of HARQ-ACK information corresponding to a PDSCH (Physical Downlink Shared Channel) scheduled by the first PDCCH is as follows:

[0088] HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is concatenated to the end of the HARQ-ACK codebook.

[0089] In one embodiment, when the signal is a HARQ-ACK codebook and includes HARQ-ACK information corresponding to a Semi-Persistent Scheduling PDSCH (SPS PDSCH), the transmission manner of the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is as follows:

[0090] HARQ-ACK information corresponding to a PDSCH scheduled by the first PDCCH is concatenated after the first type HARQ-ACK information and before the second type HARQ-ACK information, where the first type HARQ-ACK information is HARQ-ACK information corresponding to a PDSCH scheduled by a PDCCH in the HARQ-ACK codebook, and the second type HARQ-ACK information is HARQ-ACK information corresponding to an SPS PDSCH corresponding to the HARQ-ACK codebook.

[0091] The following are embodiments of the present application.

[0092] (Example 1) Suppose one UE needs to transmit one HARQ-ACK codebook, and for ease of explanation, the codebook is denoted as HARQ-ACK codebook 0. HARQ-ACK codebook 0 is instructed by the base station to be transmitted through one PUCCH in slot n, and is denoted as PUCCH0 for ease of explanation. Another HARQ-ACK codebook is also instructed by the base station to be transmitted through one PUCCH (denoted as PUCCH1 for ease of explanation) in slot n, and is denoted as HARQ-ACK codebook 1 for ease of explanation. PUCCH0 and PUCCH1 overlap in the time domain, and the overlap in the time domain includes partial overlap in the time domain. Assume that HARQ-ACK codebook 0 corresponds to a PDSCH transmitted in an eMBB service or is considered to be a low-priority HARQ-ACK codebook that needs to modify the transmission mechanism and / or resources, and HARQ-ACK codebook 1 corresponds to a PDSCH transmitted in an URLLC service or is considered to be a high-priority HARQ-ACK codebook that does not need to modify the transmission mechanism and / or resources. Based on the above assumption, when HARQ-ACK codebook 0 needs to modify the transmission mechanism and / or resources, it operates according to the method of this embodiment.

[0093] On the base station side, since the transmission mechanisms and resources of all HARQ-ACK codebooks are all configured by the base station, when the base station uses the resources for HARQ-ACK codebook 1, the base station knows that it overlaps with HARQ-ACK codebook 0 in the time domain, so the base station can transmit one uplink grant (UL grant) before transmitting HARQ-ACK codebook 0, and use the parameter values ​​promised in this UL grant to indicate the modification of the original transmission mechanism and / or resource of HARQ-ACK codebook 0, so that HARQ-ACK codebook 0 is transmitted according to the instruction of the UL grant. When the UE side detects the UL grant, the UE considers that HARQ-ACK codebook 0, which is the HARQ-ACK codebook with the lower priority among the two HARQ-ACK codebooks that are to overlap in the time domain, needs to be transmitted by the transmission mechanism and / or resource indicated by the UL grant, and the originally planned transmission mechanism and / or resource is abandoned. Or, upon receiving the UL grant, the UE side considers that it needs to transmit one HARQ-ACK codebook via the transmission mechanism and / or resource indicated by the UL grant, and the originally planned transmission mechanism and / or resource of the HARQ-ACK codebook is abandoned.

[0094] In this embodiment, the transmission mechanism of the HARQ-ACK codebook may include transmitting the HARQ-ACK codebook via PUCCH or transmitting via PUSCH. The resource of the HARQ-ACK codebook may include an uplink slot UL slot position and / or PUCCH resource where the HARQ-ACK codebook is located at the time of transmission. For example, the UL slot of one low priority HARQ-ACK codebook may be modified, for example, replaced with another slot, and the UL slot of the low priority HARQ-ACK codebook may not be modified, and only the PUCCH resource may be modified, and thus the new PUCCH for transmitting the low priority codebook and the PUCCH for transmitting the high priority HARQ-ACK codebook are in one UL slot but do not overlap in the time domain. Furthermore, the UL slot and the PUCCH resource of the low priority HARQ-ACK codebook may be modified at the same time. Specifically, it can be performed according to the instruction indicated by the parameter in this UL grant.

[0095] In a specific example, a UL grant for instructing modification of the transmission mechanism and / or resources of one HARQ-ACK codebook can be identified in the following two ways:

[0096] First type of scheme: The base station and the UE promise to reinterpret a parameter value in a UL grant, for example, a combined value of parameters UL-SCH indicator and CSI request in a UL grant, so that, for example, when the UL-SCH indicator value is 0 and the CSI request values ​​are all 0, the UL grant represents at least one purpose of requesting modification of the original transmission mechanism and / or resources of the HARQ-ACK codebook 0. In this way, the UE can transmit HARQ-ACK codebook 0 on the PUSCH resource configured in the UL grant and the UL slot where the PUSCH resource is located. Here, HARQ-ACK codebook 0 is transmitted on one PUSCH, and there is no UE data on the PUSCH at this time.

[0097] Second type: The base station and the UE agree to identify the UL grant according to the parameter values ​​in the UL grant. For example, the UL grant is set by reinterpreting related parameters according to the following four interpretation methods:

[0098] Interpretation method 1: If the parameter RV is 2 bits and one of the four parameter RV value states “00”, “01”, “10” or “11” is promised to be used, the UL grant indicates that at least a modification of the original transmission mechanism and / or resources of the HARQ-ACK codebook 0 is requested.

[0099] Interpretation method 2: If one bit is allocated in the parameter RV of the UL grant, and one of two states of the bit value, “1” or “0”, is allocated, the UL grant indicates that the original transmission mechanism and / or resources of the HARQ-ACK codebook 0 are at least requested to be modified.

[0100] Interpretation method 3: if the parameter HARQ-ID is 4 bits, one or more bits in HARQ-ID are promised to be used, and one of multiple value states of the bits is promised to be used, the UL grant indicates that at least the original transmission mechanism and / or resources of the HARQ-ACK codebook 0 are requested to be modified.

[0101] Interpretation method 4: If the parameters RV and HARQ-ID together form 6 bits, and one or more of the 6 bits are promised to be used, and one of multiple value states of the bits is promised to be used, the UL grant indicates that at least a modification of the original transmission mechanism and / or resources of the HARQ-ACK codebook 0 is requested.

[0102] Other parameters in this UL grant are still valid and have the original meaning, and do not need to be reinterpreted.Then, the UE transmits HARQ-ACK codebook 0 according to the instruction in this UL grant, and transmits HARQ-ACK codebook 0 via the PUSCH indicated by the UL grant, and there is no uplink data.The mechanism and resources of HARQ-ACK codebook 0 transmitted via the original PUCCH 0 are discarded.

[0103] If the UL slot in the above embodiment 1 can be replaced with a UL subslot, the signal transmission method described in this embodiment still applies.

[0104] In the first embodiment, the PUCCHs corresponding to two HARQ-ACK codebooks overlap in the time domain as an example, and the transmission mechanism and / or resource corresponding to the HARQ-ACK codebook to be discarded is modified, and the method is also applicable when there is only one HARQ-ACK codebook, and the originally planned transmission mechanism and / or resource of the HARQ-ACK codebook may be modified according to the manner described in the first embodiment. The method is also applicable when the PUCCHs corresponding to two or more HARQ-ACK codebooks overlap in the time domain. And it is also applicable when the PUCCH channel of the HARQ-ACK codebook of one UE overlaps with other channels of the UE, or the frame structure is changed, so that the PUCCH cannot be transmitted. For example, when the PUCCH channel and the PUSCH channel of the HARQ-ACK codebook of the same UE overlap, or the uplink or downlink attribute of the slot or symbol cannot be dynamically adjusted to transmit the PUCCH, the method may be used to modify the transmission mechanism and / or resource of the HARQ-ACK codebook, and the HARQ-ACK codebook may be transmitted using the modified transmission mechanism or resource.Similarly, the signal transmission method according to the first embodiment may also be applied to modify the transmission mechanism and / or resource of other data or channels (e.g., PUSCH or PDSCH, etc.) originally to be transmitted.

[0105] (Example 2) Suppose that the UE needs to transmit one HARQ-ACK codebook, and the codebook is instructed by the base station to be transmitted through one PUCCH in slot n, for ease of explanation, this HARQ-ACK codebook is denoted as HARQ-ACK codebook 0, and the PUCCH is denoted as PUCCH 0. Another HARQ-ACK codebook of the UE is also instructed by the base station to be transmitted through one PUCCH in slot n, and for ease of explanation, the other HARQ-ACK codebook is denoted as HARQ-ACK codebook 1, and the corresponding PUCCH is denoted as PUCCH 1. PUCCH 0 and PUCCH 1 overlap in the time domain. HARQ-ACK codebook 0 may correspond to the PDSCH transmitted in the eMBB service, and may be considered as a low-priority HARQ-ACK codebook that needs to modify resources. HARQ-ACK codebook 1 may correspond to the PDSCH transmitted in the URLLC service, and may be considered as a high-priority HARQ-ACK codebook that does not need to modify resources. Based on the above assumptions, if the HARQ-ACK codebook 0 needs to modify resources, it is modified according to the method of this embodiment.

[0106] Because all the HARQ-ACK codebook resources are configured by the base station, when the base station transmits the resource of HARQ-ACK codebook 1, the base station knows that it overlaps with HARQ-ACK codebook 0 in the time domain, or the base station adjusts the resource of HARQ-ACK codebook 0 due to other reasons, so the base station can transmit the first PDCCH before transmitting HARQ-ACK codebook 0, and the first PDCCH is a PDCCH that schedules a PDSCH correspondingly, and the promised parameter value in the first PDCCH indicates the modification of the original resource of HARQ-ACK codebook 0, so that HARQ-ACK codebook 0 is transmitted according to the indication of the PDCCH. When the UE side detects the first PDCCH, the UE considers that among the two HARQ-ACK codebooks that are to overlap in the time domain, HARQ-ACK codebook 0 needs to be transmitted on the resource indicated by the first PDCCH, and the originally planned resource is abandoned. Or, when the UE side receives the first PDCCH, it considers that one HARQ-ACK codebook needs to be transmitted on the resource indicated by the first PDCCH, and the originally scheduled resource of the HARQ-ACK codebook is abandoned.

[0107] Here, the resource of the HARQ-ACK codebook may include an uplink UL slot position where the HARQ-ACK codebook is located during transmission and / or a PUCCH resource. For example, the UL slot of one low-priority HARQ-ACK codebook may be modified and replaced with another UL slot. In addition, the UL slot of the low-priority HARQ-ACK codebook may not be modified, and only the PUCCH resource for transmitting the codebook may be modified, so that the new PUCCH for transmitting the low-priority HARQ-ACK codebook and the PUCCH for transmitting the high-priority HARQ-ACK codebook are in one UL slot but do not overlap in the time domain. In addition, the UL slot and the PUCCH resource of the HARQ-ACK codebook may be modified simultaneously. Specifically, it may be performed according to an instruction in the first PDCCH.

[0108] In this embodiment, the base station and the UE promise to set a parameter value in the first PDCCH, for example, a DAI counter value, which is a parameter in the first PDCCH, to indicate that at least one purpose of the first PDCCH is to request modification of the original resource of one HARQ-ACK codebook, and the new resource also conforms to the instruction of the first PDCCH. Specifically, the DAI counter value in the first PDCCH is set to be equal to the DAI counter value in the last second PDCCH corresponding to the HARQ-ACK codebook whose resource is to be modified, thereby indicating the above purpose. Here, the first PDCCH can schedule one PDSCH, which may or may not have data.

[0109] That is, when the UE side receives one PDCCH and the DAI counter value of the PDCCH is equal to the DAI counter value of the last PDCCH corresponding to one HARQ-ACK codebook, the UE considers that the PDCCH is the first PDCCH for modifying the resource of the HARQ-ACK codebook.For example, when the UE receives the first PDCCH and finds that the DAI counter value of the first PDCCH is equal to the DAI counter value of the last second PDCCH corresponding to HARQ-ACK codebook 0, the UE considers that the resource of HARQ-ACK codebook 0 is modified, and the new resource of HARQ-ACK codebook 0 is in accordance with the indication of the first PDCCH received.

[0110] In one embodiment, if there is data in the PDSCH scheduled by the first PDCCH, HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH and the HARQ-ACK codebook 0 are combined into one new HARQ-ACK codebook and transmitted on the PUCCH resource indicated by the first PDCCH. If there is no data in the PDSCH scheduled by the first PDCCH, HARQ-ACK codebook 0 is transmitted only on the PUCCH resource indicated by the first PDCCH.

[0111] In one embodiment, if there is data in the PDSCH scheduled by the first PDCCH, the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is combined with the HARQ-ACK codebook 0 to form a new HARQ-ACK codebook and transmitted on the PUCCH resource indicated by the first PDCCH. A specific operation method may be to concatenate the HARQ-ACK information of the PDSCH scheduled by the first PDCCH to the end of the HARQ-ACK information corresponding to the PDSCH dynamically scheduled by the PDCCH in the HARQ-ACK codebook 0, regardless of whether there is HARQ-ACK information corresponding to the SPS PDSCH in the HARQ-ACK codebook 0.

[0112] In one embodiment, if there is data in the PDSCH scheduled by the first PDCCH, HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is combined with the HARQ-ACK codebook 0 to form a new HARQ-ACK codebook, which is transmitted on the PUCCH resource indicated by the first PDCCH. A specific operation manner may be that if there is HARQ-ACK information corresponding to an SPS PDSCH in the HARQ-ACK codebook 0, the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is located after the HARQ-ACK information corresponding to the PDSCH dynamically scheduled by the PDCCH in the HARQ-ACK codebook 0 and before the HARQ-ACK information corresponding to the SPS PDSCH in the HARQ-ACK codebook 0.

[0113] In this embodiment, the base station uses the promised value of a parameter in one downlink PDCCH to indicate to the UE that the resource of one HARQ-ACK codebook has changed, and simultaneously provides new resources in the PDCCH.

[0114] Other parameters in the first PDCCH are still valid and have the original meaning, and do not need to be reinterpreted.Then, the UE transmits HARQ-ACK codebook 0 on the PUCCH resource indicated by the first PDCCH according to the indication in the first PDCCH. The original PUCCH 0 resource of HARQ-ACK codebook 0 is discarded.

[0115] If the UL slot in the above embodiment 2 can be replaced with a UL subslot, the signal transmission method according to this embodiment can still be applied.

[0116] The second embodiment takes the PUCCH corresponding to two HARQ-ACK codebooks as an example of overlapping in the time domain, and modifies the transmission mechanism and / or resource corresponding to the HARQ-ACK codebook to be discarded, and the method also applies when there is only one HARQ-ACK codebook, that is, when there is no overlap with the transmission of other HARQ-ACK codebooks in the time domain, the originally planned transmission mechanism and / or resource of the HARQ-ACK codebook may be modified according to the method of the present invention. The method also applies when the PUCCH corresponding to two or more HARQ-ACK codebooks overlap in the time domain. And also applies when the PUCCH channel of the HARQ-ACK codebook of one UE overlaps with other channels of the UE, or the frame structure changes, so that the PUCCH cannot be transmitted. For example, when the PUCCH channel and the PUSCH channel of the HARQ-ACK codebook of the same UE overlap, or the uplink or downlink attribute of the slot or symbol cannot be dynamically adjusted to transmit the PUCCH, the method may be used to modify the transmission mechanism and / or resource of the HARQ-ACK codebook, and the HARQ-ACK codebook may be transmitted using the modified transmission mechanism or resource.Similarly, the signal transmission method according to the first embodiment may also be applied to modify the transmission mechanism and / or resource of other data or channels (e.g., PUSCH or PDSCH, etc.) originally to be transmitted.

[0117] (Example 3) In the related art, when a base station sets a parameter beta_offsets value used when transmitting uplink control information UCI (Uplink Control Information, including one or more of HARQ-ACK, CSI, and SR) on a physical uplink shared channel PUSCH, the base station refers to the following higher layer signaling structure (UCI-OnPUSCH parameters in TS38.331), and beta_offsets specifically includes a dynamic parameter dynamic or a semi-static parameter semiStatic, and only one of the two can be selected and set. Here, when betaoffsets is set to the dynamic parameter dynamic, four values ​​are given. When betaoffsets is set to the semi-static parameter semiStatic, there is only one value. Then, the beta_offset indication domain in the PDCCH specifically indicates which of the four values ​​to use.

[0118] In addition, in the definition of PDCCH, in order to schedule PUSCH, it mainly includes two types of PDCCH, which are denoted as DCI0-0 and DCI0-1, where DCI0-0 has a small total bit, generally corresponds to high reliability during transmission, has a low actual coding rate, and is mainly used in cell edge. Therefore, DCI0-0 is not provided with a parameter beta_offset indication domain. In contrast, DCI0-1 has a large total bit number and a high density coding rate. DCI0-1 is provided with a parameter beta_offset indication domain.

[0119] There is also a rule in the related art that when DCI0-0 or DCI0-1 without a beta_offset indication domain schedules PUSCH, the UE uses the beta_offsets set by higher layer signaling.

[0120] Through the analysis of the present invention and based on the related art, it is believed that the following problem exists: When the beta_offsets set by higher layer signaling is semiStatic, there is only one value, which the UE can directly use; when the beta_offsets set by higher layer signaling is dynamic, there are four values, and the manner for the UE to determine the value may be one of the following:

[0121] The base station and the UE promise that the UE will adopt a default or predefined betaoffset value as UCI to be transmitted on the PUSCH scheduled by DCI0-0 for the PUSCH. For example, regardless of whether the betaoffsets set by RRC (Radio Resource Control) signaling are dynamic or semi-static, if the UE attempts to transmit UCI on the PUSCH scheduled by DCI0-0, the UE uses the default or predefined betaoffset. The base station side also considers that the UE used the default or predefined betaoffset when transmitting UCI via the PUSCH scheduled by DCI0-0. The advantage of this is that even if the signaling set by RRC is blurred, the UE can also use the determined betaoffset value when transmitting UCI on the PUSCH scheduled by DCI0-0. In this manner, the betaoffset value remains unchanged, and only the same betaoffset value can be used in different scenes such as the cell edge and the cell center. Obviously, the flexibility of the betaoffset value is poor, and the transmission efficiency of UCI is low.

[0122] When RRC signaling dynamically sets beta_offsets and sets four beta_offset values, the base station and the UE promise to use one of the four dynamic beta_offset values ​​as a beta_offset value to transmit UCI on the PUSCH when the UE transmits UCI on the PUSCH scheduled by DCI0-0. Specifically, the base station and the UE promise to use the first of the four dynamic beta_offset values, or the largest one of the four dynamic beta_offset values, or the second largest one of the four dynamic beta_offset values. The reason for using the largest one of the beta_offset values ​​is that one of the DCI0-0 usage scenarios is the cell edge coverage, and using the maximum value is believed to ensure that the signaling of UCI, i.e., the coding rate during UCI transmission, is minimized, but the performance of the PUSCH is sacrificed, resulting in the worst PUSCH performance. The use of the second lowest beta_offset value is mainly a compromise based on the first type of configuration, in which the PUSCH performance is better than the worst situation after the best UCI performance is used, and when using this type of configuration, the beta_offset adopts a configuration in which the most recently used beta_offset value is used when the RRC is blurred. In this case, the UE needs to store the most recently used beta_offset value to be used when the RRC is blurred.

[0123] The base station and the UE promise that if the beta_offsets set by the RRC signaling is dynamic and set to four beta_offsets values, when the UE transmits UCI on the PUSCH scheduled by DCI0-0, the UE uses the default or predefined beta_offset value as the UCI transmitted on the PUSCH. For example, regardless of whether the beta_offsets set by the RRC signaling is dynamic or semi-static, when the UE attempts to transmit UCI on the PUSCH scheduled by DCI0-0, the UE uses the default or predefined beta_offset. The base station side also considers that the UE used the default or predefined beta_offset when transmitting UCI via the PUSCH scheduled by DCI0-0. The advantage of this is that even if the signaling set by the RRC is blurred, when the UE transmits UCI on the PUSCH scheduled by DCI0-0, the determined beta_offset value can also be used. In contrast to the first type, in this type, if the betaoffsets set by RRC signaling is semi-static, it means that when the UE transmits UCI on the PUSCH scheduled by DCI0-0, it can use the semi-static betaoffset value set by the RRC. The beta_offset value can be semi-statically modified to achieve a certain degree of flexibility of the beta_offset value. Based on this type, if the RRC is blurred, the default or predefined beta_offset value is directly used.

[0124] FIG. 5 is a structural schematic diagram of a signal transmission device according to an embodiment of the present application, the signal transmission device comprising: a first transmitting module 51 for transmitting an uplink grant (UL grant); The UL grant is used to indicate that the transmission mechanism of the signal and / or the resources of the signal have changed.

[0125] In one embodiment, a parameter in the UL grant, UL-SCH indicator, is set to 0, and a parameter in the UL grant, CSI request, is set to 0.

[0126] In one embodiment, all parameters other than the redundancy version RV parameter and the hybrid automatic repeat request identity HARQ-ID parameter in the UL grant are valid parameters.

[0127] In one embodiment, the transmission mechanism includes at least one of transmitting the signal via a physical uplink control channel (PUCCH) and transmitting the signal via a physical uplink shared channel (PUSCH).

[0128] The resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal;

[0129] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a physical resource block (PRB) position, a bandwidth part (BWP) position, and a carrier position.

[0130] In one embodiment, the signal includes one of a Hybrid Automatic Repeat Request Acknowledgement / Negative Acknowledgement HARQ-ACK codebook, a Scheduling Request SR, Channel State Information CSI, and User Equipment UE data.

[0131] In one embodiment, when the signal is a HARQ-ACK codebook, the UL grant is used to indicate that the transmission of the HARQ-ACK codebook via a PUCCH is modified to the transmission of the HARQ-ACK codebook via a PUSCH scheduled by the UL grant.

[0132] FIG. 6 is a structural schematic diagram of a signal transmission device according to an embodiment of the present application; a first receiving module 61 for receiving a UL grant; a first transmission module 62 for transmitting the signal based on the UL grant; The UL grant is used to indicate that the transmission mechanism of the signal and / or the resources of the signal have changed.

[0133] In one embodiment, the parameter UL-SCH indicator in the UL grant is 0, and the parameter CSI request in the UL grant is 0.

[0134] In one embodiment, all parameters other than the parameter RV and the parameter HARQ-ID in the UL grant are valid parameters.

[0135] In one embodiment, the transmission mechanism includes at least one of transmitting the signal via a PUCCH and transmitting the signal via a PUSCH.

[0136] The resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal.

[0137] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a PRB position, a BWP position, and a carrier position.

[0138] In one embodiment, the signal includes one of a HARQ-ACK codebook, an SR, a CSI, and UE data.

[0139] In one embodiment, when the signal is a HARQ-ACK codebook, the UL grant is used to indicate that the transmission of the HARQ-ACK codebook via a PUCCH is modified to the transmission of the HARQ-ACK codebook via a PUSCH scheduled by the UL grant.

[0140] FIG. 7 is a structural schematic diagram of a signal transmission device according to an embodiment of the present application; a second transmitting module 71 for transmitting the first PDCCH, The first PDCCH is used to indicate that the resource of the signal has been changed.

[0141] In one embodiment, the resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal.

[0142] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a PRB position, a BWP position, and a carrier position.

[0143] In one embodiment, the signal includes one of a HARQ-ACK codebook, an SR, a CSI, and UE data.

[0144] In one embodiment, if the signal is a HARQ-ACK codebook, a downlink assignment index counter value DAI counter of the first PDCCH is set to a value of a DAI counter of a second PDCCH.

[0145] Here, the second PDCCH is the last PDCCH among the PDCCHs corresponding to at least one PDSCH corresponding to the HARQ-ACK codebook.

[0146] In one embodiment, all parameters other than the DAI counter, which is a parameter in the first PDCCH, are valid parameters.

[0147] In one embodiment, when the signal is a HARQ-ACK codebook, a transmission method of HARQ-ACK information corresponding to a PDSCH scheduled by the first PDCCH is a method of concatenating the HARQ-ACK information corresponding to a PDSCH scheduled by the first PDCCH to the end of the HARQ-ACK codebook.

[0148] Alternatively, when the signal includes a HARQ-ACK codebook and HARQ-ACK information corresponding to a semi-static scheduling SPS PDSCH, a transmission manner of the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is a manner of concatenating the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH after the first type of HARQ-ACK information and before the second type of HARQ-ACK information, where the first type of HARQ-ACK information is the HARQ-ACK information corresponding to the PDSCH scheduled by the PDCCH in the HARQ-ACK codebook, and the second type of HARQ-ACK information is the HARQ-ACK information corresponding to the SPS PDSCH corresponding to the HARQ-ACK codebook.

[0149] FIG. 8 is a structural schematic diagram of a signal transmission device according to an embodiment of the present application. As shown in FIG. a second receiving module 81 for receiving the first PDCCH; a second transmission module 82 for transmitting the resources according to an indication of a signal transmission scheme in the first PDCCH; The first PDCCH is used to indicate that the resource of the signal has been changed.

[0150] In one embodiment, the resources include at least one of a time domain resource used by the signal, a frequency domain resource used by the signal, a codeword resource used by the signal, and a beam resource used by the signal.

[0151] Here, the time domain resource includes at least one of a slot position, a subslot position, and a symbol position, and the frequency domain resource includes at least one of a PRB position, a BWP position, and a carrier position.

[0152] In one embodiment, the signal includes one of a HARQ-ACK codebook, an SR, a CSI, and UE data.

[0153] In one embodiment, if the signal is a HARQ-ACK codebook, the DAI counter of the first PDCCH is set to a value of the DAI counter of a second PDCCH.

[0154] Here, the second PDCCH is the last PDCCH among the PDCCHs corresponding to at least one PDSCH corresponding to the HARQ-ACK codebook.

[0155] In one embodiment, all parameters other than the DAI counter, which is a parameter in the first PDCCH, are valid parameters.

[0156] In one embodiment, the transmission method of the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is to concatenate the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH to the tail of the HARQ-ACK codebook. The second transmission module has been described in the above embodiment.

[0157] In one embodiment, when the signal includes HARQ-ACK information corresponding to a HARQ-ACK codebook and a SPS PDSCH, the transmission manner of the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH is a manner of concatenating the HARQ-ACK information corresponding to the PDSCH scheduled by the first PDCCH after the first type of HARQ-ACK information and before the second type of HARQ-ACK information, the first type of HARQ-ACK information is the HARQ-ACK information corresponding to the PDSCH scheduled by the PDCCH in the HARQ-ACK codebook, and the second type of HARQ-ACK information is the HARQ-ACK information corresponding to the SPS PDSCH corresponding to the HARQ-ACK codebook. The second transmission module 71 has been described in the above embodiment.

[0158] The functions of each module in each device in the embodiments of the present application can be referred to the corresponding descriptions in the embodiments of the method described above, and the descriptions are omitted here.

[0159] 9 is a structural schematic diagram of a terminal according to an embodiment of the present application. As shown in FIG. 9, the terminal 130 according to the embodiment of the present application includes a memory 1303 and a processor 1304. The terminal 130 may further include an interface 1301 and a bus 1302. The interface 1301, the memory 1303 and the processor 1304 are connected via the bus 1302. The memory 1303 is used for storing instructions. The processor 1304 is configured to read the instructions to execute the technical solutions of the embodiments of the method applied to the terminal, and the implementation principles and technical effects thereof are similar, and thus will not be described here.

[0160] FIG. 10 is a structural schematic diagram of a base station according to an embodiment of the present application. As shown in FIG. 10, a base station 140 according to an embodiment of the present application includes a memory 1403 and a processor 1404. The base station may further include an interface 1401 and a bus 1402. The interface 1401, the memory 1403 and the processor 1404 are connected via the bus 1402. The memory 1403 is used for storing instructions. The processor 1404 is configured to read the instructions to execute the technical solutions of the embodiments of the method applied to the base station, and the implementation principles and technical effects thereof are similar, and thus are not described here.

[0161] 11 is a structural schematic diagram of a communication system according to an embodiment of the present application, and as shown in FIG. 11, the system includes a terminal 130 according to the above embodiment and a base station 140 according to the above embodiment. The communication system according to the embodiment of the present application may include, but is not limited to, a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunication System (UMTS), or a 5G system, etc.

[0162] The above are only illustrative examples of the present application, and are not intended to limit the scope of protection of the present application.

[0163] In general, various embodiments of the present application may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof For example, some aspects may be implemented in hardware and other aspects may be implemented in firmware or software executable by a controller, microprocessor or other computing device, and the present application is not limited thereto.

[0164] Embodiments of the present application may be implemented by execution of computer program instructions by a data processor of a mobile device, for example in a processor entity, by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or target code written in any combination of one or more programming languages.

[0165] Any logic flow block diagram in the figures of the present application may represent program steps, interconnected logic circuits, modules and functions, or a combination of program steps and logic circuits, modules and functions. The computer program may be stored in a memory. The memory may be of any type suitable for the local technical environment and may be implemented with any suitable data storage technology. The memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both a volatile memory and a non-volatile memory. Here, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory, etc. The volatile memory may be a random access memory (RAM) used as an external cache memory. RAM includes various types such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct Rambus random access memory (DR RAM). The memory of the systems and methods of this application may include, but is not limited to, these and any other suitable types of memory.

[0166] The processor of the embodiments of the present application may be of any type suitable for the local technical environment, for example, but not limited to, a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or a processor based on a multi-core processor architecture. The general-purpose processor may be a microprocessor, any conventional processor, etc. The processor may realize or execute the steps of the method disclosed in the embodiments of the present application. The software module may be located in a storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the method in conjunction with its hardware.

Claims

1. A signal transmission method, comprising: a base station sending a downlink control information (DCI) message to a user equipment on a physical downlink control channel (PDCCH), the DCI message corresponding to a DCI for scheduling a physical downlink shared channel (PDSCH), where the PDSCH does not carry data, an agreed-upon value of "1" for a field in the DCI message indicating that the DCI message signals a change in a slot position for transmitting an automatic repeat request acknowledgement (HARQ-ACK) codebook with HARQ-ACK information from a first slot to a second slot, and only the HARQ-ACK codebook is transmitted in the second slot; the base station receiving the HARQ-ACK codebook from the user equipment according to the DCI message; A signal transmission method comprising:

2. The method of claim 1 , wherein the HARQ-ACK codebook is transmitted on a physical uplink control channel (PUCCH).

3. The method of claim 1 , wherein the DCI message indicates information for determining the second slot for transmitting the HARQ-ACK codebook.

4. A signal transmission method, comprising: a user equipment receiving a downlink control information (DCI) message from a base station on a physical downlink control channel (PDCCH), the DCI message corresponding to a DCI for scheduling a physical downlink shared channel (PDSCH), where the PDSCH does not carry data, an agreed-upon value of "1" for a field in the DCI message indicating that the DCI message signals a change in a slot position for transmitting an automatic repeat request acknowledgement (HARQ-ACK) codebook with HARQ-ACK information from a first slot to a second slot, and only the HARQ-ACK codebook is transmitted in the second slot; The user equipment transmits the HARQ-ACK codebook to the base station according to the DCI message; A signal transmission method comprising:

5. The method of claim 4, wherein the signal transmission method includes the user equipment transmitting the HARQ-ACK codebook on a physical uplink control channel (PUCCH).

6. The method of claim 4 , wherein the DCI message indicates information for determining the second slot for transmitting the HARQ-ACK codebook.

7. A signal transmission device, comprising: The signal transmission device includes a storage device and a processor. the storage device is used to store instructions; A signal transmission device, wherein the processor is configured to execute the method according to any one of claims 1 to 3 upon reading the instructions.

8. A signal transmission device, comprising: The signal transmission device includes a storage device and a processor. the storage device is used to store instructions; A signal transmission device, wherein the processor is configured to execute the method according to any one of claims 4 to 6 upon reading the instructions.

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