Signal transmission method, signal reception method and device

Abstract

In an embodiment of the present invention, a signal transmission method, a signal reception method and an apparatus are provided, and the signal transmission method includes: a terminal device receiving first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, the first DCI being used to schedule a plurality of the PDSCHs; and the terminal device transmitting hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to the PDSCH scheduled by the first DCI at a first time domain position.

Description

[Technical Field]

[0001] The present invention relates to the field of communications. [Background technology]

[0002] A physical downlink shared channel (PDSCH) is a type of physical downlink channel in a wireless communication system and is used to carry downlink data. The PDSCH can be dynamically scheduled or semi-permanently scheduled (SPS) by downlink control information (DCI). When dynamically scheduling the PDSCH by DCI, current new radio (NR) systems define multiple DCI formats for scheduling the PDSCH, such as DCI format 1_0, DCI format 1_1, and DCI format 1_2. The specific information and / or size included in the DCI of different DCI formats differ to meet different scheduling needs. Regarding the number of PDSCHs scheduled by DCI, currently, only one PDSCH can be scheduled by one DCI.

[0003] It should be noted that the introduction of the above background art is intended to clearly and completely explain the technical solutions of the present invention and to facilitate understanding by those skilled in the art, and these technical solutions described in the background art of the present invention should not be construed as being known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0004] The inventors have discovered that, in the current NR system, only one PDSCH can be scheduled by one DCI. In some cases, for a terminal device, such a scheduling scheme may have a problem in that it places a heavy burden on monitoring the DCI or the Physical Downlink Control Channel (PDCCH). This increases the complexity and power consumption of the device.

[0005] For example, currently, research is being conducted on how to support NR systems operating at higher frequencies (52.6 GHz or higher), and data transmission at higher frequencies faces problems such as worse phase noise. Therefore, to overcome problems such as phase noise, it is necessary to adopt a larger subcarrier spacing (e.g., 240 kHz, 480 kHz, 960 kHz, etc.) to support data transmission at higher frequencies. However, a larger subcarrier spacing means a shorter symbol length, which means a shorter slot length. If the above-mentioned scheduling method in which one PDSCH is scheduled by one DCI is still adopted so that a user equipment (UE) can receive at least one PDSCH in each slot, the UE still needs to monitor the DCI in each slot. Thus, when the above-mentioned larger subcarrier spacing is adopted, the slot length becomes shorter, and therefore the number of DCI monitoring times per unit absolute time (e.g., 1 ms) of the UE increases. This means that the DCI monitoring burden on the UE increases, and the implementation complexity and power consumption of the UE may also increase accordingly.

[0006] In view of at least one of the above problems, embodiments of the present invention provide a signal transmission method, a signal reception method and an apparatus, which can support scheduling multiple PDSCHs using one DCI, and also support feedback of corresponding HARQ-ACK information. [Means for solving the problem]

[0007] According to one aspect of an embodiment of the present invention, there is provided a signal transmission device configured in a terminal device, the device comprising: a receiver for receiving first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, the first DCI being used to schedule a plurality of the PDSCHs; and A transmitter for transmitting Hybrid Automatic Repeat Acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain position is included.

[0008] According to one aspect of an embodiment of the present invention, there is provided a signal receiving device configured in a network device, the device comprising: a transmitter for transmitting first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, the first DCI being used to schedule a plurality of the PDSCHs; and A receiver for receiving Hybrid Automatic Repeat Acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain position is included.

[0009] According to one aspect of an embodiment of the present invention, there is provided a signal transmission device configured in a network device, the device comprising: a transmitter for transmitting first instruction information and / or third instruction information to a terminal device; The first indication information is used to set a numerical range corresponding to a first information field of a first DCI, and the third indication information is used to set a time domain resource allocation table to support scheduling of multiple PDSCHs by one DCI, and the time domain resource allocation table corresponds to the first DCI.

[0010] According to one aspect of an embodiment of the present invention, there is provided a signal receiving device configured in a terminal device, the device comprising: a receiving unit for receiving the first instruction information and / or the third instruction information transmitted by the network device; The first indication information is used to set a numerical range corresponding to a first information field of a first DCI, and the third indication information is used to set a time domain resource allocation table to support scheduling of multiple PDSCHs by one DCI, and the first DCI uses the time domain resource allocation table. [Effects of the Invention]

[0011] The embodiment of the present invention can support scheduling multiple PDSCHs by one DCI, and also support feedback of corresponding HARQ-ACK information.

[0012] The following description and reference to the drawings disclose in detail particular embodiments of the present invention, illustrating ways in which the principles of the present invention may be employed, but the scope of the present invention is not limited thereto, and various changes, modifications, and alternatives may be included within the scope of the appended claims.

[0013] Additionally, features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in the other embodiments, or may be substituted for features in the other embodiments.

[0014] It should be noted that when used in this specification, terms such as "comprise / have" refer to the presence of a feature, element, step, or assembly, but do not exclude the presence or addition of one or more other features, elements, steps, or assemblies. [Brief explanation of the drawings]

[0015] Elements and features described in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments, and in the drawings, like reference numerals are used to indicate corresponding parts in several drawings and to indicate corresponding parts used in multiple embodiments. [Figure 1] 1 is a diagram illustrating a communication system according to an embodiment of the present invention. [Figure 2a] FIG. 10 is a diagram showing two examples (part 1) of indicating four PDSCHs using one DCI. [Figure 2b] FIG. 10 is a diagram showing two examples (part 2) of indicating four PDSCHs using one DCI. [Figure 3a] FIG. 1 is a diagram showing some examples (part 1) of time units. [Figure 3b] FIG. 10 is a diagram showing some examples (part 2) of time units. [Figure 4a] 1A and 1B are diagrams illustrating two examples (part 1) of scheduling multiple PDSCHs using one DCI. [Figure 4b] FIG. 10 is a diagram showing two examples (part 2) of scheduling multiple PDSCHs using one DCI. [Figure 5] FIG. 2 is a diagram illustrating a signal transmission method according to an embodiment of the present invention. [Figure 6] 1A to 1C are diagrams showing some examples (part 1) of DCI formats. [Figure 7] 10A and 10B are diagrams showing some examples (part 2) of DCI formats. [Figure 8] A figure showing some examples (part 3) of DCI formats. [Figure 9] A figure showing some examples (part 4) of DCI formats. [Figure 10] A figure showing several examples (part 5) of DCI formats. [Figure 11] A figure showing several examples (part 6) of DCI formats. [Figure 12] A figure showing several examples (part 7) of DCI formats. [Figure 13] A figure showing some examples (part 8) of DCI formats. [Figure 14] A figure showing some examples (part 9) of DCI formats. [Figure 15] A figure showing several examples (part 10) of DCI formats. [Figure 16] FIG. 2 illustrates a signal receiving method according to an embodiment of the present invention. [Figure 17] FIG. 2 is a diagram illustrating a signal transmission method according to an embodiment of the present invention. [Figure 18] FIG. 2 illustrates a signal receiving method according to an embodiment of the present invention. [Figure 19] 1 is a diagram illustrating an example of a signal transmission device according to an embodiment of the present invention. [Figure 20] 1 is a diagram illustrating an example of a signal receiving device according to an embodiment of the present invention. [Figure 21] 1 is a diagram illustrating an example of a signal transmission device according to an embodiment of the present invention. [Figure 22] 1 is a diagram illustrating an example of a signal receiving device according to an embodiment of the present invention. [Figure 23] FIG. 2 is a diagram illustrating a terminal device according to an embodiment of the present invention. [Figure 24] FIG. 1 is a configuration diagram of a network device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] The foregoing and other features of the present invention will become more apparent from the following detailed description and the accompanying drawings, in which: While the specification and drawings disclose particular embodiments of the present invention, these illustrate only some of the embodiments which may employ the principles of the present invention, and it is to be understood that the present invention is not limited to the described embodiments, but rather includes all modifications, variations, and alternatives which fall within the scope of the appended claims.

[0017] In embodiments of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as LTE (Long Term Evolution), LTE-A (LTE-Advanced), WCDMA (Wideband Code Division Multiple Access), HSPA (High-Speed ​​Packet Access), etc.

[0018] Additionally, communications between devices in a communications system may be performed according to any of a variety of communications protocols, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), and / or other conventional or future communications protocols.

[0019] In the embodiments of the present invention, the term "network device" refers to a device that connects a terminal device to a communication network and provides services to the terminal device in a communication system, for example, a network device may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a network gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0020] The base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a 5G base station (gNB), etc., and may further include a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay, or a low-power node (e.g., femto, pico, etc.). The term "base station" may include some or all of the functions thereof, and each base station can provide communication coverage for a specific geographical area. The term "cell" may refer to a base station and / or the area it covers, depending on the context of the term. The terms "cell" and "base station" are interchangeable unless confusion arises.

[0021] In embodiments of the present invention, the term "User Equipment" (UE) or "Terminal Equipment" (TE) refers to a device that accesses a communication network and receives services from the network, for example, via a network device. A User Equipment may be fixed or mobile, and may also be referred to as a Mobile Station (MS), a terminal, a Subscriber Station (SS), an Access Terminal (AT), a station, etc.

[0022] Among these, user devices may include, but are not limited to, cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smart watches, digital cameras, etc.

[0023] Furthermore, for example, in a scenario such as the Internet of Things (IoT), the user equipment may also be a monitoring or measuring device or apparatus, including, but not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0024] Furthermore, the term "network side" or "network device side" refers to the side of the network, which may be a specific base station or may include one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of the user or terminal, which may be a specific UE or may include one or more terminal devices as described above. Note that, unless otherwise specified, "device" may refer to either a network device or a terminal device. In the following description, unless it causes confusion, the term "uplink control signal" may be interchanged with "uplink control information (UCI)" or "physical uplink control channel (PUCCH)", the term "uplink data signal" may be interchanged with "uplink data information" or "physical uplink shared channel (PUSCH)", the term "downlink control signal" may be interchanged with "downlink control information (DCI)" or "physical downlink control channel (PDCCH)", and the term "downlink data signal" may be interchanged with "downlink data information" or "physical downlink shared channel (PDSCH)".

[0025] Furthermore, transmission or reception of a PUSCH may be understood as transmission or reception of uplink data carried by the PUSCH, transmission or reception of a PUCCH may be understood as transmission or reception of uplink information (e.g., UCI) carried by the PUCCH, transmission or reception of a PDSCH may be understood as transmission or reception of downlink data carried by the PDSCH, and transmission or reception of a PDCCH may be understood as transmission or reception of downlink information (e.g., DCI) carried by the PDCCH.

[0026] In an embodiment of the present invention, the higher layer signaling may be, for example, Radio Resource Control (RRC) signaling, and the RRC signaling may include, for example, an RRC message, such as a Main Information Block (MIB), system information, or a dedicated RRC message; or an RRC information element (RRC IE); or an information field included in the RRC message or the RRC information element (or an information field included in the information field). The higher layer signaling may also be, for example, Medium Access Control (MAC) signaling, or may be referred to as a MAC control element (MAC CE). However, the present invention is not limited thereto.

[0027] The following describes a scenario in an embodiment of the present invention through an example, but the present invention is not limited thereto.

[0028] Fig. 1 is a diagram showing a communication system in an embodiment of the present invention, taking a terminal device and a network device as an example. As shown in Fig. 1, a communication system 100 may include a network device 101 and terminal devices 102 and 103. For convenience, Fig. 1 uses two terminal devices and one network device as an example for explanation, but the embodiment of the present invention is not limited to this.

[0029] In an embodiment of the present invention, conventional services (traffic) or future services can be transmitted between the network device 101 and the terminal devices 102 and 103. These services include, but are not limited to, enhanced Mobile Broadband (eMBB), massive Machine Type Communication (mMTC), and Ultra-Reliable and Low-Latency Communication (URLLC).

[0030] 1 shows that the two terminal devices 102 and 103 are both located within the coverage of the network device 101, but the present invention is not limited to this. Neither of the two terminal devices 102 and 103 may be located within the coverage of the network device 101, or one terminal device 102 may be located within the coverage of the network device 101 and the other terminal device 103 may be located outside the coverage of the network device 101.

[0031] The following describes some concepts related to embodiments of the present invention.

[0032] In the embodiment of the present invention, the HARQ-ACK codebook may be of a type such as a Type-1 HARQ-ACK codebook, a Type-2 HARQ-ACK codebook, or a Type-3 HARQ-ACK codebook.

[0033] The basic concepts for generating the above three types of HARQ-ACK codebooks are different.

[0034] For example, the Type-1 HARQ-ACK codebook is mainly generated based on semi-static parameters (predefined or configured by RRC signaling) related to PDSCH scheduling and HARQ-ACK information feedback, and the size of the codebook is generally independent of dynamic scheduling situations and has relatively strong robustness, thereby avoiding the inability to accurately feedback HARQ-ACK information due to UE DCI detection failure.

[0035] For example, the Type-2 HARQ-ACK codebook is mainly generated based on the dynamic scheduling situation, and its codebook size is generally determined based on the dynamic scheduling situation. Therefore, compared with Type-1, the codebook size can be reduced, and the uplink control signaling overhead can be reduced, but the HARQ-ACK information may not be accurately fed back due to the UE's DCI detection failure.

[0036] Also, for example, a Type-3 HARQ-ACK codebook is mainly used to feed back HARQ-ACK information for an HARQ process, and the codebook size is generally related to the number of configured HARQ processes.

[0037] The type of HARQ-ACK codebook adopted by the UE may be predefined, indicated by RRC signaling, or indicated by DCI, and the type of HARQ-ACK codebook adopted in different cases may be different to meet different needs for feedback of HARQ-ACK information.

[0038] In the embodiments of the present invention, the transport blocks carried by different PDSCHs may be the same or different. Hereinafter, "multiple PDSCHs" or "at least two PDSCHs" or "more than one PDSCH" scheduled by one DCI all refer to different PDSCHs carrying different transport blocks. Specifically, the transport blocks carried by different PDSCHs may correspond to the same or different HARQ processes, among which different HARQ processes are identified by different HARQ process IDs.

[0039] In an embodiment of the present invention, when scheduling a PDSCH, the DCI needs to indicate the time domain resources of the PDSCH. Generally, the DCI includes an information field (abbreviated as the second information field) for indicating the time domain resources of the PDSCH, and the information field indicates the time domain resources of the PDSCH based on the time domain resource allocation table (TDRA) table (abbreviated as the PDSCH TDRA table or simply the TDRA table) used. The second information field is, for example, a time domain resource assignment field. Specifically, the information field can indicate the index of a time domain resource assignment configuration (abbreviated as the TDRA configuration) in the TDRA table. For example, the above-mentioned TDRA table is the TDRA table used by the DCI, and the second information field indicates the index (row index, for example, the value of the row index is 1 or more) of the TDRA configuration in the TDRA table used by the DCI to indicate the time domain resources of the PDSCH. In other words, the DCI schedules the PDSCH by indicating the TDRA configuration in the TDRA table used by it. For example, the value m (where m is an integer greater than or equal to 0) of the second information field of the DCI corresponds to the TDRA configuration whose index in the TDRA table used by the DCI is m+1 (i.e., the m+1th row). The time domain resource allocation table may be predefined or configured by RRC signaling. If the TDRA table is configured by RRC signaling, for example, the index value corresponding to the (m+1)th TDRA configuration configured by the RRC signaling is m+1, i.e., when the value of the second information field is m, it corresponds to the (m+1)th TDRA configuration configured by the RRC signaling.

[0040] In an embodiment of the present invention, the time domain resource allocation table includes at least one row. Hereinafter, for convenience of description, one row is referred to as one TDRA configuration. That is, the TDRA table includes at least one TDRA configuration. One TDRA configuration includes at least one time domain resource configuration (referred to as a PDSCH time domain resource configuration). The time domain resource configuration includes at least a symbol position within a slot (start symbol + length) configuration. One PDSCH TDRA configuration may further include at least one slot offset configuration (e.g., referred to as K0), where K0 represents the slot offset between the PDSCH and the PDCCH. The K0 configuration may or may not be included in the PDSCH time domain resource configuration. One TDRA configuration may also include other information, which may or may not be included in the PDSCH time domain resource configuration. However, the embodiment of the present invention is not limited thereto. Among them, the symbol position setting in the slot may, for example, include a start and length indicator (SLIV), where the SLIV corresponds to a valid combination of a starting symbol (S) and a length (L), or may, for example, correspond to a starting symbol setting and a length setting, where the starting symbol setting and the length setting are a valid combination.

[0041] In some embodiments, to support scheduling multiple PDSCHs using one DCI, new RRC signaling (e.g., pdsch-TimeDomainAllocationListForMultiPDSCH or pdsch-TimeDomainAllocationListForMultiPDSCH-r17) (e.g., referred to as third indication information) may be used to configure a time domain resource allocation table (simply referred to as a first time domain resource allocation table) for supporting scheduling multiple (i.e., more than one) PDSCHs using one DCI. The first time domain resource allocation table includes at least one time domain resource allocation configuration (first time domain resource allocation configuration) for scheduling multiple (i.e., more than one) PDSCHs. The first time domain resource allocation configuration may include, for example, multiple SLIVs, each corresponding to one PDSCH.

[0042] In some embodiments, the first time domain resource allocation configuration includes one time domain offset K0 configuration, where K0 represents a slot offset between the first PDSCH and a PDCCH carrying DCI scheduling the PDSCH.

[0043] In some embodiments, the first time-domain resource allocation configuration includes multiple (i.e., more than one) K0 configurations. For example, the configuration includes multiple K0s, each K0 corresponding to one PDSCH and representing a slot offset between the corresponding PDSCH and a PDCCH for scheduling the PDSCH. Optionally, the K0s may be included in the PDSCH time-domain resource configuration and may have a one-to-one correspondence with each SLIV, thereby sequentially determining the slot positions of multiple PDSCHs.

[0044] In some embodiments, when one first time-domain resource allocation configuration is used to schedule multiple PDSCHs in multiple consecutive slots, the configuration includes one time-domain offset K0 configuration, where K0 represents, for example, a slot offset between a first PDSCH and a PDCCH carrying DCI for scheduling the PDSCH. When one first time-domain resource allocation configuration is used to schedule multiple PDSCHs in multiple non-consecutive slots, the first time-domain resource allocation configuration includes multiple (i.e., more than one) time-domain offset K0 configurations. For example, the configuration includes multiple K0s, each K0 corresponding to one PDSCH and representing a slot offset between the corresponding PDSCH and a PDCCH for scheduling the PDSCH. Optionally, the K0s are included in the PDSCH time-domain resource configuration and may have a one-to-one correspondence with each SLIV, thereby sequentially determining the slot positions of multiple PDSCHs.

[0045] In some embodiments, the terminal device determines a PDSCH time domain resource allocation table used by a DCI (or a DCI with DL grant / assignment). The terminal device may further determine the PDSCH time domain resource allocation table used by the DCI based on a first table, where one column of the first table corresponds to the third indication information (e.g., pdsch-TimeDomainAllocationListForMultiPDSCH or pdsch-TimeDomainAllocationListForMultiPDSCH-r17) for configuring a PDSCH TDRA table to support scheduling multiple PDSCHs by one DCI. The third indication information is, for example, included in PDSCH-Config. That is, the terminal device determines the PDSCH time domain resource allocation table used by the DCI for scheduling a PDSCH based on the first table from a predefined or higher layer signaling-configured PDSCH time domain resource allocation (TDRA) table. Taking the DCI as DCI formats 1_0 and 1_1 as an example, the following Table 1 is an example of the first table.

[0046] Table 1 shows the available PDSCH time domain resource allocation for DCI format 1_0 and DCI format 1_1.

[0047] [Table 1] TIFF0007761762000002.tif115170 In the embodiments of the present invention, the DCI indicating multiple (i.e., more than one) PDSCHs refers to the DCI (or the second information field in the DCI) indicating time domain resource allocation configuration for scheduling more than one PDSCH. Note that the time domain resource allocation configuration has already been described, and therefore a detailed description thereof will be omitted here.

[0048] In the embodiments of the present invention, a DCI scheduling multiple PDSCHs (i.e., more than one) refers to multiple PDSCHs indicated by the DCI, or the multiple PDSCHs indicated by the DCI including more than one valid PDSCH, or the multiple PDSCHs indicated by the DCI having a PDSCH with a corresponding HARQ process (or HARQ process ID). A valid PDSCH and / or a PDSCH with a corresponding HARQ process refers, for example, to a PDSCH that does not overlap with a semi-statically configured uplink symbol and / or a dynamically configured uplink symbol and / or a semi-statically configured symbol where uplink transmission is located and / or a reserved symbol and / or an interval symbol. A valid PDSCH may be the same as or different from a PDSCH with a corresponding HARQ process. In the different cases, for example, a valid PDSCH refers to a PDSCH that does not overlap with semi-statically configured uplink symbols, and a PDSCH having a corresponding HARQ process refers to a PDSCH that does not overlap with semi-statically configured uplink symbols and / or dynamically configured uplink symbols. In other words, when a PDSCH indicated by DCI overlaps with semi-statically configured uplink symbols and / or dynamically configured uplink symbols and / or semi-statically configured symbols where uplink transmission is located and / or reserved symbols and / or interval symbols, the PDSCH is an invalid PDSCH and / or the PDSCH does not have a corresponding HARQ process (or HARQ process ID).

[0049] For example, a valid PDSCH and / or a PDSCH having a corresponding HARQ process refers to a PDSCH that does not overlap with semi-statically configured uplink symbols. If a PDSCH overlaps / collides with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process (or HARQ process ID). Generally, a base station does not transmit the PDSCH, and a UE does not receive the PDSCH. Conversely, if a PDSCH does not overlap / collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process (or HARQ process ID).

[0050] As shown in Figure 2a, DCI (PDCCH) indicates four PDSCHs, the second PDSCH indicated by the DCI overlaps with a semi-statically configured uplink symbol, so this PDSCH is an invalid PDSCH and does not have a corresponding HARQ process (or HARQ process ID), while the other three PDSCHs do not overlap with the semi-statically configured uplink symbols, so they are valid PDSCHs and have corresponding HARQ processes (or HARQ process IDs). Among them, the HARQ process ID indicated by the DCI (or the HARQ process number field in the DCI) corresponds to the first PDSCH (or the first valid PDSCH) scheduled by the DCI.

[0051] Furthermore, for example, as shown in Figure 2b, assume that the HARQ process ID indicated by the DCI is 3. Since the first PDSCH indicated by the DCI does not overlap with the semi-statically configured uplink symbol, this PDSCH is the first PDSCH scheduled by the DCI and corresponds to the HARQ process ID indicated by the DCI. The HARQ process IDs of the subsequent PDSCHs are incremented by 1 in the scheduling order. Among them, the second PDSCH indicated by the DCI overlaps with the semi-statically configured uplink symbol, so it does not have a corresponding HARQ process, and the HARQ process ID is not incremented by 1. Therefore, the HARQ process IDs corresponding to the third and fourth PDSCHs indicated by the DCI are 4 (3 + 1) and 5 (4 + 1), respectively.

[0052] In some embodiments, a time unit (e.g., a symbol, a slot, or a subframe) can be configured as uplink, downlink, or flexible by signaling (e.g., instruction information for setting the transmission direction (semi-static / dynamic), which will be described later).Among these, a time unit that is not explicitly configured as uplink or downlink by signaling is a time unit that is configured (or implicitly accepted) as flexible.

[0053] In some embodiments, when a time unit containing multiple symbols is configured as uplink, downlink, or flexible, all symbols in the time unit are either uplink, downlink, or flexible.

[0054] In some embodiments, the UE receives instruction information for (semi-statically) configuring (or indicating) the transmission direction. The aforementioned semi-statically configured uplink symbols are symbols configured as uplink symbols by the instruction information for semi-statically configuring the transmission direction. The instruction information is, for example, RRC signaling (e.g., tdd-UL-DL-ConfigurationCommon and / or tdd-UL-DL-ConfigurationDedicated). For example, the aforementioned semi-statically configured UL symbols refer to UL symbols configured by the RRC signaling. That is, a valid PDSCH and / or a PDSCH having a corresponding HARQ process refers to a PDSCH that does not overlap with semi-statically configured uplink symbols, and a valid PDSCH and / or a PDSCH having a corresponding HARQ process refers to a PDSCH that does not overlap / collide with uplink symbols configured by tdd-UL-DL-ConfigurationCommon and / or tdd-UL-DL-ConfigurationDedicated.

[0055] In some embodiments, the UE receives indication information for (dynamically) setting the transmission direction. The dynamically set uplink symbols are symbols that are set as uplink symbols according to the indication information for dynamically setting the transmission direction. The indication information is, for example, physical layer signaling (e.g., DCI format 2_0 or SFI (Slot format indicator) in DCI format 2_0). Generally, the indication information cannot override the transmission direction of symbols that are semi-statically set as DL or UL, but is not limited thereto. For example, the dynamically set UL symbols refer to UL symbols set by the physical layer signaling. That is, a PDSCH with a valid PDSCH and / or a corresponding HARQ process refers to a PDSCH that does not overlap with dynamically set uplink symbols, and a PDSCH with a valid PDSCH and / or a corresponding HARQ process refers to a PDSCH that does not overlap / collide with uplink symbols set by DCI format 2_0. A valid PDSCH and / or a PDSCH having a corresponding HARQ process refers to a PDSCH that does not overlap with semi-statically configured uplink symbols and dynamically configured uplink symbols, and a valid PDSCH and / or a PDSCH having a corresponding HARQ process is a PDSCH that does not overlap / collide with uplink symbols configured by tdd-UL-DL-Configuration Common and / or tdd-UL-DL-Configuration Dedicated and does not overlap / collide with uplink symbols configured by DCI format 2_0. The same applies to other combinations, and a comprehensive list will be omitted here.

[0056] In some embodiments, the semi-statically configured uplink transmission is, for example, a CG PUSCH (Type 1 or Type 2), a PRACH, an SRS, or a PUCCH.

[0057] In some embodiments, semi-static configuration refers to being configured by higher layer signaling, for example.

[0058] In some embodiments, the reserved symbols and / or interval symbols are, for example, predefined or configured by higher layer signaling. The reserved symbols and / or interval symbols are, for example, for inter-cell interference reduction and / or uplink / downlink switching.

[0059] In the embodiments of the present invention, for convenience of description, the time domain position for feeding back or transmitting HARQ-ACK information is referred to as the first time domain position, and its unit may be a slot, a sub-slot, or a symbol. The first time domain position is, for example, UL slot n+k, where UL slot n is referred to as the second time domain position, and k is referred to as the first value.

[0060] In an embodiment of the present invention, the first time domain location may be indicated (or configured / provided) by, for example, RRC signaling and / or DCI, e.g., the RRC signaling and / or DCI may indicate the first time domain location by indicating a first value.

[0061] Below, a description will be given along with specific cases.

[0062] Case 1: The UE detects (has) a DCI (or a DCI format) that schedules a PDSCH (or a PDSCH reception), and the DCI schedules one or more (i.e., more than one) PDSCHs, and the PDSCH scheduled by the DCI is in DL slot n. D For example, the DCI schedules one PDSCH, and the PDSCH is scheduled in DL slot n. D Also, for example, the DCI schedules more than one PDSCH, and the last PDSCH is scheduled in DL slot n. D That is, the multiple PDSCHs scheduled by the DCI are allocated to DL slot n DWherein, the DCI indicates or does not indicate the release of the SPS PDSCH, and / or the DCI indicates or does not indicate the dormant state of the SCell, and / or the DCI requests or does not request a Type-3 HARQ-ACK codebook report.

[0063] Case 2: The UE detects a DCI (or a DCI format) indicating the release of the SPS PDSCH, and the corresponding PDCCH (or PDCCH reception) (i.e., for carrying the DCI) is in DL slot n. D Wherein, the DCI schedules one or more PDSCHs, or does not schedule a PDSCH.

[0064] Case 3: The UE detects (has detected) a DCI (or a DCI format) that indicates the dormancy of an SCell, and the corresponding PDCCH (or PDCCH reception) (i.e., for carrying the DCI) is in DL slot n D Wherein, the DCI schedules one or more PDSCHs, or does not schedule a PDSCH.

[0065] Case 4: The UE detects (has) a DCI (or DCI format) that requires a Type-3 HARQ-ACK codebook report, and the corresponding PDCCH (or PDCCH reception) (i.e., for carrying the DCI) is in DL slot n. D Wherein, the DCI schedules one or more PDSCHs, or does not schedule a PDSCH.

[0066] In the above cases 1 to 4, the UE sends / provides (to the base station) corresponding HARQ-ACK information in a PUCCH transmission within UL slot n+k, where k is, for example, the number of first time units (e.g., slots), and is indicated by the PDSCH-to-HARQ_feedback timing indicator field (if present) in the above DCI, or is provided by dl-DataToUL-ACK, dl-DataToUL-ACK-r16, or dl-DataToUL-ACKForDCIFormat1_2 (for the latter, the PDSCH-to-HARQ_feedback timing indicator field may or may not be present in the DCI format, and if present, the UE shall ignore this information field).

[0067] In some embodiments, the first time unit may be, for example, a slot and / or a subslot and / or a symbol. The symbols included in a subslot are a subset of the symbols included in the corresponding slot. In some embodiments, a subslot may be referred to as a slot, unless confusion arises. Figures 3a and 3b show some examples of time units.

[0068] Case 5: DL slot n D For an SPS PDSCH (or SPS PDSCH reception) ending in , the UE transmits a PUCCH in UL slot n+k, where k is provided by the PDSCH-to-HARQ_feedback timing indicator field (if present) in the DCI (or DCI format) activating reception of the SPS PDSCH.

[0069] In an embodiment of the present invention, the second time domain location may be, for example, predefined and / or base station directed.

[0070] The second time domain position is, for example, an uplink slot that overlaps (or superimposes) with a PDCCH or PDSCH (scheduled by DCI or SPS), or the last uplink slot that overlaps with a PDCCH or PDSCH (scheduled by DCI or SPS), or the last uplink slot that overlaps with a downlink slot in which a PDCCH or PDSCH (scheduled by DCI or SPS) is located, or an uplink slot that overlaps with the end position of a PDCCH or PDSCH (scheduled by DCI or SPS), or the last uplink slot that overlaps with a downlink slot in which the end position of a PDCCH or PDSCH (scheduled by DCI or SPS) is located. When the DCI schedules more than one PDSCH, the second time domain position may refer to, for example, the last UL slot overlapping with the last PDSCH (or the last PDSCH reception) indicated or scheduled, or may refer to, for example, the DL slot n of the last PDSCH (or the last PDSCH reception) indicated or scheduled. D or, for example, the last DL slot n of an indicated or scheduled PDSCH (or PDSCH reception). D This refers to the last UL slot that overlaps with the

[0071] Wherein, the uplink slot is based on the SCS for transmitting the corresponding HARQ-ACK information, and the downlink slot corresponding to the PDCCH or PDSCH is based on the SCS for transmitting the PDCCH or PDSCH, respectively.

[0072] In some embodiments, the SCS for transmitting the PDCCH, the SCS for transmitting the PDSCH, and the SCS for transmitting the HARQ-ACK information may be the same or different.

[0073] Figures 4a and 4b show two examples of scheduling multiple PDSCHs using one DCI, where Figure 4a shows a case where the last PDSCH is the last valid PDSCH scheduled by the DCI, and Figure 4b shows a case where the last PDSCH is the last PDSCH indicated by the DCI, even though the PDSCH is an invalid PDSCH.

[0074] This will be further explained below in conjunction with specific cases.

[0075] In the above case 1, if subslotLengthForPUCCH is provided to the UE, n is the last UL slot (or subslot) overlapping with the reception of PDSCH; otherwise, n is DL slot n for the reception of PDSCH. D n is the last UL slot (not subslot) overlapping with the last PDSCH (or last PDSCH reception) indicated or scheduled when DCI indicates or schedules multiple PDSCHs, and if subslotLengthForPUCCH is provided to the UE, n is the last UL slot (or subslot) overlapping with the last PDSCH (or last PDSCH reception) indicated or scheduled; otherwise, n is DL slot n of the PDSCH (for reception). D or the last DL slot n of the last PDSCH (or the last PDSCH reception) for indication or scheduling. D or the last DL slot n of the indication or scheduling PDSCH (or PDSCH reception) D The last UL slot (not a sub-slot) overlaps with

[0076] In the above cases 2 to 4, if subslotLengthForPUCCH is provided to the UE, n is the last UL slot (or subslot) overlapping with the reception of the corresponding PDCCH; otherwise, n is the DL slot n for the corresponding PDCCH (or PDSCH reception). D The last UL slot overlaps with

[0077] In the above case 5, if subslotLengthForPUCCH is provided to the UE, n is the last UL slot (or subslot) overlapping with the reception of the SPS PDSCH (or PDSCH reception); otherwise, n is the DL slot n in which the SPS PDSCH is located. D The last UL slot overlaps with

[0078] In an embodiment of the present invention, the first value (k) may represent, for example, the number of slots and / or the number of subslots and / or the number of symbols. The first value may be configured by RRC signaling and / or indicated by DCI. For example, if subslotLengthForPUCCH is provided to the UE, the first value represents the number of subslots; otherwise, the first value represents the number of slots (not the number of subslots).

[0079] In some embodiments, the first value is determined by a first information field in the DCI and / or RRC signaling. The first information field is used to indicate the first value, or the first information field is used to indicate a second value for determining the first value. In other words, the first information field is used to indicate a first time-domain position. When the first information field is used to indicate the second value, the UE determines the first value based on the second value. In some cases (e.g., but not limited to, in the case of DCI format 1_1), the second value is the first value. In some cases (e.g., but not limited to, in the case of DCI format 1_0), the UE further determines the first value based on a third value. For example, the first value = the second value + the third value. The third value is, for example, predefined or indicated by the base station. In some embodiments, the first value (k) and the second value (e.g., k1) can be used interchangeably as long as no confusion occurs (e.g., when the second value is the first value).

[0080] For example, the first information field is called a PDSCH-to-HARQ_feedback timing indicator field. The value range of the first or second value indicated by the first information field (or the value range corresponding to the first information field) may be predefined or configured by RRC signaling. The value ranges corresponding to different DCI formats (or the first information fields in different DCI formats) may be the same or different. When the value ranges are configured by RRC signaling, the RRC signaling for configuring the value ranges for different DCI formats may be the same or different.

[0081] For example, the RRC signaling may directly set the value of the first value, and the DCI may or may not include the first information field for indicating the first value. If the DCI includes the first information field, the RRC signaling for directly setting the value of the first value and the RRC signaling for setting the value range corresponding to the first information field of the DCI may be the same or different.

[0082] Below, a description will be given along with specific examples.

[0083] For DCI format 1_0 for scheduling PDSCH or activating / deactivating SPS, the first value is indicated by the DCI.

[0084] For example, the value range corresponding to the value of the first information field is {1, 2, 3, 4, 5, 6, 7, 8}. When the value of the first information field is 0, the corresponding value is 1; when the value of the first information field is 1, the corresponding value is 2; and so on. The corresponding value is a first value or a second value, and the UE determines the first value based on the second value.

[0085] For DCI format 1_1 for scheduling PDSCH or activating / deactivating SPS, the first value is indicated by DCI or configured by RRC signaling.

[0086] For example, the DCI includes a first information field, and the value of the first information field corresponds to a set of values ​​(a first or second value of a set) set by RRC signaling. Each value in the set of values ​​represents one slot number, sub-slot number, and / or symbol number. When the value of the first information field is 0, the corresponding value is the first value in the set of values; when the value of the first information field is 1, the corresponding value is the second value in the set of values; and the others can be inferred accordingly. The RRC signaling here includes, for example, dl-DataToUL-ACK, dl-DataToUL-ACK-r16, dl-DataToUL-ACK-r17, etc., where dl-DataToUL-ACK-r17 is, for example, but not limited to, for FR2-2.

[0087] Also, for example, the RRC signaling sets one value (first value or second value). Here, the RRC signaling may be, for example, dl-DataToUL-ACK, dl-DataToUL-ACK-r16, dl-DataToUL-ACK-r17, etc. Among them, dl-DataToUL-ACK-r17 is, for example, for FR2-2, but is not limited to this.

[0088] For DCI format 1_2 for scheduling PDSCH or activating / deactivating SPS, the first value is indicated by DCI or configured by RRC signaling.

[0089] For example, the DCI includes a first information field, and the value of the first information field corresponds to a set of values ​​(a set of first or second values) set by RRC signaling. Each value in the set of values ​​represents one slot number and / or sub-slot number and / or symbol number. The RRC signaling here is, for example, dl-DataToUL-ACKForDCIFormat1_2.

[0090] Also, for example, the RRC signaling sets one value (first value or second value). Here, the RRC signaling is, for example, dl-DataToUL-ACKForDCIFormat1_2.

[0091] For a DCI for requesting a Type-3 HARQ-ACK codebook report, for example, DCI format 1_1, DCI format 1_2, etc., the first value is indicated by the DCI.

[0092] For example, the DCI includes a first information field, and the value of the first information field corresponds to a set of values ​​configured by RRC signaling, such as dl-DataToUL-ACK, dl-DataToUL-ACK-r16, dl-DataToUL-ACKForDCIFormat1_2, etc.

[0093] Generally, the first value corresponds to the first information field in DCI format 1_1 and 1_2, or is a value set by RRC signaling, but is not limited to this.

[0094] NR Rel-16 introduces a special value for the first value. In some cases, RRC signaling (e.g., dl-DataToUL-ACK-r16, corresponding to DCI format 1_1) can set an inapplicable value (hereinafter referred to as the first specific value) for the first value. The value of the first specific value is, for example, -1. When DCI format 1_1 schedules a PDSCH and indicates the first specific value, the UE can determine the time domain position (first time domain position) for feeding back or transmitting HARQ-ACK information corresponding to the PDSCH scheduled by the DCI after receiving another DCI. That is, when DCI format 1_1 indicates the first specific value, the DCI does not indicate the corresponding first time domain position.

[0095] In addition, in NR Rel-16, only one PDSCH can be scheduled by one DCI. Therefore, currently, the method of feeding back HARQ-ACK information when the DCI indicates a first specific value is only applicable to the case where one PDSCH is scheduled by one DCI. According to the existing method, when a UE schedules more than one PDSCH and receives a DCI indicating a first specific value, the UE cannot determine whether or how to feed back the HARQ-ACK information corresponding to the more than one PDSCH and / or the DCI.

[0096] In view of the above problems, an embodiment of the present invention is provided, and the embodiment of the present invention will be described below in conjunction with the drawings and specific implementation manners.

[0097] Note that, here, "instruction" may explicitly include some information and be notified, or may be implicitly notified by some features. Furthermore, terms such as "DCI," "DCI format," and "DCI format" have the same meaning and can be used interchangeably. Furthermore, terms such as "schedulable," "schedulable," and "for scheduling" have the same meaning and can be used interchangeably.

[0098] <Example of the first aspect> In the embodiment of the present invention, a signal transmission method is provided, which will be explained from the terminal device side.

[0099] 5 is a diagram illustrating a signal transmission method according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps (operations):

[0100] 501: A terminal device receives first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, the first DCI being used to schedule a plurality of the PDSCHs; and 502: The terminal device transmits hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain position.

[0101] Note that, although the above-mentioned FIG. 5 is used to exemplify an embodiment of the present invention, the present invention is not limited thereto. For example, the execution order of each operation may be appropriately adjusted, or some operations may be added or removed. Those skilled in the art may make appropriate modifications to the above content without being limited to the description of the above-mentioned FIG. 5.

[0102] According to an embodiment of the present invention, when a first DCI is used to schedule multiple (i.e., more than one) PDSCHs, after receiving the first DCI and the PDSCH scheduled by the first DCI, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at a first time domain position, thereby supporting scheduling of multiple PDSCHs by one DCI and also supporting feedback of corresponding HARQ-ACK information.

[0103] In some embodiments, when a first DCI is used to schedule multiple PDSCHs, it means that the first DCI can schedule or is schedulable for multiple PDSCHs, or that the first DCI has the capability to schedule more than one PDSCH. For example, when a TDRA table used by a first DCI is used to support scheduling multiple PDSCHs by one DCI, it means that the first DCI can schedule or is schedulable for multiple PDSCHs.

[0104] In an embodiment of the present invention, the terminal device can further receive a second DCI, which indicates the above-mentioned first time domain position.

[0105] In some embodiments, the first DCI does not indicate said first time domain location.

[0106] In some embodiments, the first DCI and the second DCI are in the same or different DCI formats.

[0107] In some embodiments, the terminal device determines whether to transmit HARQ-ACK information of the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI based on at least one of the following: Time domain positional relationship between the first DCI and the second DCI; Time domain positional relationship between the second DCI and the PDSCH scheduled by the first DCI; a time domain positional relationship between a PDSCH scheduled by the second DCI and a PDSCH scheduled by the first DCI; PDSCH set indexes associated with the first DCI and the second DCI; a time-domain positional relationship between the PDSCH scheduled by the first DCI and the SPS PDSCH; a time-domain position relationship between a first time-domain position indicated by the first DCI and a time-domain position corresponding to the SPS PDSCH; A time-domain position relationship between the second DCI and the time-domain position corresponding to the SPS PDSCH; and Information field for requesting or triggering Type-3 HARQ-ACK codebook-based HARQ-ACK information reporting in the second DCI is.

[0108] In some embodiments, the PDCCH monitoring occasion for transmitting / receiving the second DCI is after the PDCCH monitoring occasion for transmitting / receiving the first DCI (or the second DCI is transmitted / received after the first DCI), or the PDCCH monitoring occasion for transmitting the second DCI is not earlier than the PDCCH monitoring occasion for transmitting the first DCI (or the transmission / reception of the second DCI is not earlier than the transmission / reception of the first DCI). That is, in such a case, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI; otherwise, the terminal device does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI based on the time domain position relationship between the first DCI and the second DCI.

[0109] In some embodiments, the forward / backward order of the PDCCH monitoring opportunities is determined based on the start position / start time of the PDCCH monitoring opportunity (e.g., the first symbol or the start position of the first symbol). For example, if the start position of the first PDCCH monitoring opportunity is after the start position of the second PDCCH monitoring opportunity, then the first PDCCH monitoring opportunity is after the second PDCCH monitoring opportunity. Similarly, if the start position of the first PDCCH monitoring opportunity is after or the same as the start position of the second PDCCH monitoring opportunity, then the first PDCCH monitoring opportunity is not earlier than the second PDCCH monitoring opportunity.

[0110] In some embodiments, the second DCI being transmitted / received after the first DCI includes the following: the first DCI and the second DCI are transmitted / received on the same PDCCH monitoring occasion (same or different downlink carrier / cell); and the index of the resource (e.g., CCE or REG) for transmission / reception of the second DCI is greater than the index of the resource (e.g., CCE or REG) for transmission / reception of the first DCI.

[0111] In some embodiments, the PDCCH monitoring occasion for transmission / reception of the second DCI is after the (e.g., last) PDSCH scheduled by the first DCI (or the second DCI is transmitted / received after the (e.g., last) PDSCH scheduled by the first DCI), or the PDCCH monitoring occasion for transmission of the second DCI is not earlier than the PDSCH scheduled by the first DCI (or the second DCI is not transmitted / received earlier than the (e.g., last) PDSCH scheduled by the first DCI). That is, in such a case, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI; otherwise, the terminal device does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI based on the time domain position relationship between the second DCI and the PDSCH scheduled by the first DCI.

[0112] In some embodiments, the (e.g., first) PDSCH (if any) scheduled by the second DCI is after the (e.g., last) PDSCH scheduled by the first DCI, or the (e.g., first) PDSCH (if any) scheduled by the second DCI is not earlier than the (e.g., last) PDSCH scheduled by the first DCI. That is, in such a case, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI; otherwise, the terminal device does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI based on the time domain position relationship between the PDSCH scheduled by the second DCI and the PDSCH scheduled by the first DCI.

[0113] In some embodiments, the first DCI indicates a first PDSCH group index, and the second DCI indicates reporting of HARQ-ACK information for the first PDSCH group index. That is, if the above-mentioned two DCIs are associated with the same PDSCH group, the UE transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time-domain position indicated by the second DCI; otherwise, the UE does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time-domain position indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time-domain position indicated by the second DCI based on the first DCI and the PDSCH group index associated with the second DCI.

[0114] In some embodiments, the second DCI indicates a Type-3 HARQ-ACK codebook-based HARQ-ACK information report. For example, the second DCI may further include an information field for requesting or triggering a Type-3 HARQ-ACK codebook-based HARQ-ACK information report, where the value of the information field is 1 (i.e., the second DCI indicates a Type-3 HARQ-ACK codebook-based HARQ-ACK information report). That is, if the second DCI includes the above information field and the value of the information field is 1, the UE transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI; otherwise, the UE does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI based on the above information field of the second DCI.

[0115] In some embodiments, the second DCI may schedule a PDSCH or may not schedule a PDSCH. The cases where the second DCI does not schedule a PDSCH include, for example, the following cases: the second DCI is used only to activate or deactivate an SPS, and / or the second DCI is used only to indicate dormancy of an SCell, and / or the second DCI is used only to request a Type-3 HARQ-ACK codebook, and / or the second DCI adopts DCI format 2_x (where x is 0, 1, 2, 3, 4, 5, 6, etc.). do Cases and the like, but are not limited to these.

[0116] In some embodiments, the second DCI is only used to schedule more than one PDSCH, i.e., the second DCI can schedule or is schedulable for more than one PDSCH, or the second DCI has the capability to schedule more than one PDSCH. For example, the TDRA table used by the second DCI is used to support scheduling multiple PDSCHs by one DCI, meaning that the second DCI can schedule or is schedulable for multiple PDSCHs.

[0117] In some embodiments, the second DCI is not used to schedule more than one PDSCH, i.e., the second DCI does not have the ability to schedule more than one PDSCH. For example, the TDRA table used by the second DCI is not used to support scheduling multiple PDSCHs by one DCI, meaning that the second DCI cannot schedule or is unschedulable for multiple PDSCHs. Note that, although the above-described embodiments exemplarily describe only some cases in which the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position, the present invention is not limited thereto, and appropriate modifications can also be made based on the above-described embodiments. For example, the above-described and following embodiments may be used alone, or two or more of the above-described and following embodiments may be used in combination.

[0118] In an embodiment of the present invention, the terminal device configures and / or activates SPS, the first DCI schedules one or more PDSCHs, and the terminal device receives a semi-persistently scheduled PDSCH (SPS PDSCH) after the last PDSCH scheduled by the first DCI, or the first DCI indicates one or more PDSCHs, and the terminal device receives the SPS PDSCH after the last PDSCH indicated by the first DCI. In this case, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time-domain position indicated by the second DCI; otherwise, the terminal device does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time-domain position indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time-domain position indicated by the second DCI based on the time-domain position relationship between the PDSCH scheduled by the first DCI and the SPS PDSCH. The meaning of DCI scheduling PDSCH and DCI indicating PDSCH has already been explained. It has been Therefore, a detailed description thereof will be omitted here.

[0119] In some embodiments, receiving a semi-persistently scheduled PDSCH (SPS PDSCH) after a PDSCH refers to the start position / time (e.g., the first symbol or the start position of the first symbol) of the SPS PDSCH being after the start position / time (e.g., the first symbol or the start position of the first symbol) of the PDSCH, or the slot in which the SPS PDSCH is located being after the slot in which the PDSCH is located, or the start position / time (e.g., the first symbol or the start position of the first symbol) of the SPS PDSCH being after the end position / time (e.g., the last symbol or the start position / time of the last symbol) of the PDSCH.

[0120] In some embodiments, the first time domain location indicated by the second DCI is a time domain location for transmitting HARQ-ACK information corresponding to the SPS PDSCH, i.e., not later than the time domain location corresponding to the SPS PDSCH. That is, the first time domain location indicated by the second DCI is earlier than or the same as the time domain location for transmitting HARQ-ACK information corresponding to the SPS PDSCH. In this case, the UE transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain location indicated by the second DCI; otherwise, the UE does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain location indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain location indicated by the second DCI based on the time domain position relationship between the first time domain location indicated by the first DCI and the time domain location corresponding to the SPS PDSCH.

[0121] In some embodiments, when SPS is configured and / or activated, the terminal device receives the second DCI after the time domain position corresponding to the SPS PDSCH. That is, the time domain position corresponding to the SPS PDSCH precedes the second DCI. In this case, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI. Otherwise, the terminal device does not transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI. That is, the UE needs to determine whether to transmit HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at the first time domain position indicated by the second DCI based on the time domain position relationship between the second DCI and the time domain position corresponding to the SPS PDSCH.

[0122] In some embodiments, the SCS for transmission of the first DCI, the SCS for transmission of the second DCI, and the SCS for transmission of the SPS PDSCH are the same or different.

[0123] In some embodiments, the first DCI, the PDSCH scheduled by the first DCI, the second DCI, the PDSCH scheduled by the second DCI (if scheduled), and the SPS PDSCH (if received) are transmitted / received on the same or different downlink carriers or cells. When transmitted / received on different downlink carriers or cells, the different downlink carriers or cells correspond to the same or different uplink carriers or cells for transmitting HARQ-ACK information, or the different downlink carriers or cells belong to the same or different cell groups. The cell groups are, for example, PUCCH groups (e.g., first PUCCH group or secondary PUCCH group), MCGs, or SCGs. For example, assuming the same cell group, when an SCG is configured for the UE, the cell group is, for example, the MCG or SCG, and correspondingly, the above-mentioned uplink carriers or cells are, for example, a Pcell and a PScell, respectively. For example, when a PUCCH-Scell ​​is configured for a UE, the cell group may be, for example, a first PUCCH group or a secondary PUCCH group, and correspondingly, the above-mentioned uplink carrier or cell may be, for example, a Pcell and the above-mentioned PUCCH-Scell, respectively.

[0124] Although the above-described embodiments only exemplify how a terminal device receives an SPS PDSCH when one or more PDSCHs are scheduled or indicated by the first DCI, the present invention is not limited thereto, and further, appropriate modifications can be made based on the above-described embodiments. For example, the above-described embodiments can be used alone, or a plurality of the above-described embodiments can be used in combination.

[0125] In an embodiment of the present invention, the first DCI does not indicate the first time-domain location, for example, the first DCI includes a first information field for indicating the first time-domain location, and the first information field indicates a first specific value.

[0126] In some embodiments, the first DCI does not indicate the first time-domain position because the first specific value does not have a corresponding first time-domain position. In some embodiments, the first specific value is −1. Note that the meaning of the first specific value has already been explained, and therefore a detailed explanation thereof will be omitted here.

[0127] In some embodiments, the first DCI indicates or schedules only one PDSCH, that is, when the first DCI does not indicate the first time domain position (i.e., indicates the first specific value), the first DCI indicates or schedules only one PDSCH, thereby solving the above-mentioned technical problem.

[0128] In the above embodiment, when the first DCI indicates or schedules more than one PDSCH, the first DCI does not indicate the above-mentioned first specific value, even though the value range corresponding to the first information field of the first DCI set by RRC signaling (e.g., first indication information) includes the first specific value. The RRC signaling here may be one of the above-mentioned RRC signalings, such as dl-DataToUL-ACK-r16, or a new signaling, such as dl-DataToUL-ACK-r17, but is not limited thereto.

[0129] In some embodiments, the first DCI indicates or schedules more than one PDSCH, and the terminal device does not configure and / or activate SPS. That is, the terminal device can indicate the first specific value when the first DCI indicates or schedules more than one PDSCH only when SPS is not configured and / or activated. In other words, it may be said that when SPS is configured and / or activated, the terminal device cannot indicate the first specific value when the first DCI indicates or schedules more than one PDSCH, or can schedule more than one PDSCH when indicating the first specific value.

[0130] In an embodiment of the present invention, the terminal device can further receive first indication information, which is used to set a numerical range corresponding to the first information field of the first DCI, and the numerical range includes the above-mentioned first specific value.

[0131] In an embodiment of the present invention, the terminal device can further report its capability information, for example, the terminal device can send second indication information, and the second indication information is used to indicate at least one of the following: Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain location is not indicated by the first DCI; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when more than one PDSCH is scheduled by the first DCI and the first time domain location is not indicated; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated by the first DCI; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; and When SPS is configured and / or activated, whether the terminal device supports scheduling more than one PDSCH by the first DCI and feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated. is.

[0132] Although the above-described embodiments only exemplify the content indicated by the second instruction information, the present invention is not limited thereto, and further, appropriate modifications can be made based on the above-described embodiments. For example, the above-described embodiments can be used alone, or two or more of the above-described embodiments can be used in combination.

[0133] The method in the embodiment of the present invention will be described below in conjunction with the drawings, in which the following description takes as an example that the first DCI schedules more than one PDSCH.

[0134] In an embodiment of the present invention, the UE receives a first DCI format detected by the UE in a first PDCCH monitoring occasion, and the first DCI format includes a first information field, for example, a PDSCH-to-HARQ_feedback timing indicator field, which provides a first specific value from the first indication information.

[0135] Furthermore, if the UE detects a second DCI format (which may or may not schedule a PDSCH), the UE multiplexes corresponding HARQ-ACK information (HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI format) into a PUCCH or PUSCH transmission in a slot (first time-domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format.

[0136] In some embodiments, the UE is not provided with, but is not limited to, information (e.g., referred to as first information for short) for configuring to employ a Type-2 HARQ-ACK codebook based on a PDSCH set (e.g., pdsch-HARQ-ACK-Codebook-r16). The UE detects the second DCI format in (any) PDCCH monitoring opportunity after the first DCI format, and the slot (first time-domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field in the second DCI format is not later than the slot (or subslot or symbol) (or the first time-domain position corresponding to the SPS PDSCH) of HARQ-ACK information for responding to reception of an SPS PDSCH (if any) received after the last (valid) PDSCH scheduled by the first DCI format.

[0137] Take the DCI formats shown in Figures 6 to 9 as examples. When a UE detects a first DCI format and a second DCI format, if first information (e.g., pdsch-HARQ-ACK-Codebook-r16) is not provided and the slot (first time-domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format is not later than the slot of HARQ-ACK information corresponding to reception of an SPS PDSCH received after the last PDSCH scheduled by the first DCI format, the UE multiplexes HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI format onto PUCCH or PUSCH transmission in the slot indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format.

[0138] In the examples shown in Figures 6 and 7, the PDSCHs scheduled by different DCIs do not intersect (overlap), and reception of the SPS PDSCH occurs before reception of the second DCI. In the examples shown in Figures 8 and 9, the PDSCHs scheduled by different DCIs intersect, and reception of the SPS PDSCH occurs after reception of the second DCI. In the examples shown in Figures 6 and 8, the first time-domain position for transmitting HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI is earlier than the time-domain position for transmitting HARQ-ACK information corresponding to the SPS PDSCH. In the examples shown in Figures 7 and 9, the first time-domain position for transmitting HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI is the same as the time-domain position for transmitting HARQ-ACK information corresponding to the SPS PDSCH.

[0139] In some other embodiments, the UE is provided with first information (e.g., pdsch-HARQ-ACK-Codebook-r16), the UE detects a second DCI format at any PDCCH monitoring opportunity after the first PDCCH monitoring opportunity, the second DCI format indicates a HARQ-ACK information report for the same PDSCH set index as indicated by the first DCI format, and the slot (first time-domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field in the second DCI format is not later than the slot of HARQ-ACK information for responding to reception of an SPS PDSCH (if any) received after the last (valid) PDSCH scheduled by the first DCI format.

[0140] Take the DCI formats shown in Figures 10 and 11 as examples. When a UE detects a first DCI format and a second DCI format, and is provided with first information (e.g., pdsch-HARQ-ACK-Codebook-r16), the first DCI format and the second DCI format are associated with the same PDCCH set index, and the slot (first time-domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format is not later than the slot of HARQ-ACK information corresponding to reception of an SPS PDSCH received after the last PDSCH scheduled by the first DCI format, the UE multiplexes HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI format onto PUCCH or PUSCH transmission in the slot indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format.

[0141] In the examples shown in Figures 10 and 11, the PDSCHs scheduled by different DCIs do not intersect, and the SPS PDSCH is received before the second DCI. Note that the present invention is not limited to this, and similar to the examples shown in Figures 8 and 9, the PDSCHs scheduled by different DCIs may intersect, and the SPS PDSCH may be received after the second DCI. In the example shown in Figure 10, the first time domain position for transmitting HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI is earlier than the time domain position for transmitting HARQ-ACK information corresponding to the SPS PDSCH. In the example shown in Figure 11, the first time domain position for transmitting HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI is the same as the time domain position for transmitting HARQ-ACK information corresponding to the SPS PDSCH.

[0142] In some other embodiments, the UE is provided with first information (e.g., pdsch-HARQ-ACK-Codebook-r16), and the UE receives a second DCI format later than the slot of HARQ-ACK information for acknowledging reception of an SPS PDSCH received after the last (valid) PDSCH scheduled by the first DCI format, and the second DCI format indicates a HARQ-ACK information report with the same PDSCH set index as indicated by the first DCI format.

[0143] Take the DCI format shown in Figure 12 as an example. When a UE detects a first DCI format and a second DCI format, and the UE is provided with first information (e.g., pdsch-HARQ-ACK-Codebook-r16), the first DCI format and the second DCI format are associated with / correspond to the same PDCCH set index, and the second DCI format is later than the slot of HARQ-ACK information corresponding to reception of an SPS PDSCH received after the last PDSCH scheduled by the first DCI format, the UE multiplexes the HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI format into a PUCCH or PUSCH transmission in a slot indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format.

[0144] In the example shown in Figure 12, PDSCHs scheduled by different DCIs do not intersect. Note that the present invention is not limited to this, and PDSCHs scheduled by different DCIs may intersect, as in the examples shown in Figures 8 and 9.

[0145] In some other embodiments, when a UE is provided with pdsch HARQ ACK One-Shot Feedback, the first DCI format does not indicate the release of an SPS PDSCH or the dormancy of an SCell, the UE detects a second DCI format in any PDCCH monitoring opportunity after the first DCI format, and the second DCI format includes a One-shot HARQ-ACK request field with a value of 1, the UE includes HARQ-ACK information for the PDSCH scheduled by the first DCI in a Type-3 HARQ-ACK codebook, wherein the slot (first time-domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format is not later than the slot of the HARQ-ACK information for responding to the reception of an SPS PDSCH (if any) received after the last (valid) PDSCH scheduled by the first DCI format.

[0146] Take the DCI formats shown in Figures 13 and 14 as examples. When a UE detects a first DCI format and a second DCI format, if pdsch HARQ ACK One-Shot Feedback is provided, the value of the One-shot HARQ-ACK request field of the second DCI format is 1, and the slot (first time domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format is not later than the slot of HARQ-ACK information corresponding to reception of an SPS PDSCH received after the last PDSCH scheduled by the first DCI format, the UE multiplexes the HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI format into PUCCH or PUSCH transmission in the slot (first time domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format.

[0147] In the examples shown in Figures 13 and 14, PDSCHs scheduled by different DCIs do not intersect, and reception of the SPS PDSCH occurs before the second DCI. Note that the present invention is not limited to this, and similar to the examples shown in Figures 8 and 9, PDSCHs scheduled by different DCIs may intersect, and reception of the SPS PDSCH may occur after the second DCI. In the example shown in Figure 13, a first time domain position for transmitting HARQ-ACK information corresponding to a PDSCH scheduled by a first DCI is earlier than a time domain position for transmitting HARQ-ACK information corresponding to an SPS PDSCH. In the example shown in Figure 14, a first time domain position for transmitting HARQ-ACK information corresponding to a PDSCH scheduled by a first DCI is the same as the time domain position for transmitting HARQ-ACK information corresponding to an SPS PDSCH.

[0148] In some other embodiments, when a UE is provided with pdsch-HARQ-ACK-OneShotFeedback-r16, the first DCI format does not indicate the release of an SPS PDSCH or the dormancy of an SCell, the UE receives a second DCI format after the slot of HARQ-ACK information for acknowledging reception of an SPS PDSCH received after the last (valid) PDSCH scheduled by the first DCI format, and the second DCI format includes a One-shot HARQ-ACK request field with a value of 1, the UE includes the HARQ-ACK information of the PDSCH scheduled by the first DCI in the Type-3 HARQ-ACK codebook.

[0149] Take the DCI format shown in Figure 15 as an example. When the UE detects the first DCI format and the second DCI format, if pdsch-HARQ-ACK-OneShotFeedback-r16 is provided, the second DCI format is later than the slot of HARQ-ACK information corresponding to reception of the SPS PDSCH received after the last PDSCH scheduled by the first DCI format, and the second DCI format includes a One-shot HARQ-ACK request field with a value of 1, the UE multiplexes the HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI format into PUCCH or PUSCH transmission in the slot (first time-domain position) indicated by the value of the PDSCH-to-HARQ_feedback timing indicator field of the second DCI format.

[0150] In the example shown in Figure 15, PDSCHs scheduled by different DCIs do not cross over. Note that the present invention is not limited to this, and PDSCHs scheduled by different DCIs may cross over as in the examples shown in Figures 8 and 9.

[0151] Although the above-described embodiments are merely illustrative examples of the present invention, the present invention is not limited to these, and appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or a plurality of the above-described embodiments may be used in combination.

[0152] As can be seen from the above embodiment, when a first DCI can schedule or is schedulable for more than one PDSCH, after receiving the first DCI and the PDSCH scheduled by the first DCI, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at a first time domain position, thereby supporting scheduling of multiple PDSCHs by one DCI and also supporting feedback of corresponding HARQ-ACK information.

[0153] <Example of the second aspect> In the embodiment of the present invention, a signal receiving method is provided, which will be described from the network device side. This method is a process on the network device side corresponding to the method in the embodiment of the first aspect, and therefore, the same content as in the embodiment of the first aspect will not be described again.

[0154] 16 is a diagram illustrating a signal receiving method according to an embodiment of the present invention. As shown in FIG. 16, the method includes the following operations (steps):

[0155] 1601: A network device transmits first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, where the first DCI is used to schedule a plurality of the PDSCHs; and 1602: The network device receives Hybrid Automatic Repeat Acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain position.

[0156] In some embodiments, the network device further transmits a second DCI, the second DCI indicating the first time domain location.

[0157] In the above-mentioned embodiment, in some implementation manners, the physical downlink control channel monitoring occasion (PDCCH monitoring occasion) for transmitting the second DCI is after the PDCCH monitoring occasion for transmitting the first DCI, or the PDCCH monitoring occasion for transmitting the second DCI is not earlier than the PDCCH monitoring occasion for transmitting the first DCI.

[0158] In the above-mentioned embodiment, the second DCI schedules a PDSCH or does not schedule a PDSCH. The second DCI not scheduling a PDSCH includes, for example, the second DCI being used to activate or deactivate an SPS, and / or the second DCI being used to indicate dormancy of an Scell, and / or the second DCI employing DCI format 2_x.

[0159] In the above embodiment, in some implementation manners, the first DCI indicates a first PDSCH group index, and the second DCI indicates a HARQ-ACK information report for the first PDSCH group index.

[0160] In the above embodiment, in some implementations, the second DCI indicates reporting HARQ-ACK information based on a Type-3 HARQ-ACK codebook.

[0161] In the above-mentioned embodiment, in some implementation manners, the second DCI includes an information field for requesting or triggering a Type-3 HARQ-ACK codebook-based HARQ-ACK information report, and the value of the information field is 1.

[0162] In the above-mentioned embodiments, in some implementations, the second DCI is used to schedule (is schedulable or schedulable for) more than one PDSCH, or the second DCI is not used to schedule more than one PDSCH, i.e., the second DCI does not have the ability to schedule more than one PDSCH.

[0163] In some embodiments, the first DCI schedules one or more PDSCHs, and the network device transmits a semi-persistently scheduled PDSCH (SPS PDSCH) after the last PDSCH scheduled by the first DCI; or the first DCI indicates one or more PDSCHs, and the network device transmits an SPS PDSCH after the last PDSCH indicated by the first DCI.

[0164] In the above-mentioned embodiment, in some implementations, the first time domain location is not later than the time domain location corresponding to the SPS PDSCH, and the time domain location corresponding to the SPS PDSCH is used to transmit HARQ-ACK information of the SPS PDSCH.

[0165] In the above embodiment, in some implementations, the network device transmits a second DCI after a time domain position corresponding to the SPS PDSCH, where the second DCI indicates the first time domain position.

[0166] In some embodiments, the first DCI does not indicate a first time-domain location. For example, the first DCI includes a first information field for indicating a first time-domain location, and the first information field indicates a first specific value, where the first specific value does not have a corresponding first time-domain location, thereby indicating that the first DCI does not indicate a first time-domain location. In the above embodiment, the first specific value may be -1.

[0167] In the above embodiment, in some implementations, the first DCI indicates or schedules only one PDSCH.

[0168] In the above embodiment, in some implementations, the first DCI indicates or schedules more than one PDSCH, and the terminal device does not configure and / or activate SPS.

[0169] In some embodiments, the network device may further send first indication information, which is used to set a value range corresponding to a first information field of the first DCI, and the value range includes a first specific value.

[0170] In some embodiments, the network device may further receive second indication information, the second indication information being used to indicate at least one of the following: Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain location is not indicated by the first DCI; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when more than one PDSCH is scheduled by the first DCI and the first time domain location is not indicated; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated by the first DCI; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; and When SPS is configured and / or activated, whether the terminal device supports scheduling more than one PDSCH by the first DCI and feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated. is.

[0171] The above-described embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Furthermore, appropriate modifications can be made based on the above-described embodiments. For example, the above-described embodiments may be used alone, or a combination of the above-described embodiments may be used.

[0172] As can be seen from the above embodiment, when a first DCI can schedule or is schedulable for more than one PDSCH, after receiving the first DCI and the PDSCH scheduled by the first DCI, the terminal device transmits HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI at a first time domain position, thereby supporting scheduling of multiple PDSCHs by one DCI and also supporting feedback of corresponding HARQ-ACK information.

[0173] <Example of the third aspect> In the embodiment of the present invention, a signal transmission method is provided, which will be explained from the network device side.

[0174] 17 is a diagram illustrating a signal transmission method according to an embodiment of the present invention. As shown in FIG. 17, the method includes the following steps:

[0175] 1701: A network device sends first indication information and / or third indication information to a terminal device, the first indication information being used to set a numerical range corresponding to a first information field of a first DCI, and the third indication information being used to set a time domain resource allocation table to support scheduling more than one PDSCH by one DCI, the time domain resource allocation table corresponding to the first DCI.

[0176] In the embodiment of the present invention, the content of the numerical range corresponding to the first information field of the first DCI has already been described, so the content is incorporated here and a detailed description thereof will be omitted here.

[0177] According to the method of the embodiment of the present invention, the network device sets a numerical range corresponding to the first information field of the first DCI for the terminal device, and / or the network device sets a time domain resource allocation table for the terminal device to support scheduling more than one PDSCH by one DCI, so that the terminal device can support scheduling multiple PDSCHs by one DCI and also support feedback of corresponding HARQ-ACK information.

[0178] In some embodiments, the first DCI is DCI format 1_1 or DCI format 1_2, that is, the network device configures, for the terminal device, a numerical range corresponding to the first information field and / or the above-mentioned time domain resource allocation table for DCI format 1_1 or DCI format 1_2.

[0179] In some embodiments, the first information field is used to determine a first time domain location, and the first time domain location is used by the terminal device to transmit HARQ-ACK information. The related content of the first time domain location has already been described in detail in the embodiments of the first aspect, and the content thereof is incorporated herein, so a detailed description thereof will be omitted here.

[0180] In some embodiments, when the network device sends the first indication information and the third indication information, the numerical range corresponding to the first information field does not include the first specific value, that is, the network device configures the numerical range corresponding to the first information field and the time domain resource allocation table for the terminal device, that is, when the first DCI can schedule multiple PDSCHs, the network device does not configure the first specific value for the terminal device.

[0181] In some embodiments, when the network device sends the first indication information and the numerical range corresponding to the first information field includes the first specific value, the network device does not send the third indication information, that is, when the network device configures the first specific value for the terminal device, the network device does not configure the above-mentioned time domain resource allocation table for the terminal device, and the first DCI cannot schedule multiple PDSCHs.

[0182] In some embodiments, when the network device sends the first indication information and the third indication information, and the numerical range corresponding to the first information field includes a first specific value, the network device does not configure and / or activate the SPS for the terminal device, that is, when the network device configures the numerical range corresponding to the first information field and the above-mentioned time domain resource allocation table for the terminal device, and the network device configures the first specific value for the terminal device, the network device does not configure and / or activate the SPS for the terminal device.

[0183] In some embodiments, when the network device configures and / or activates the SPS for the terminal device and sends the first indication information and the third indication information, the numerical range corresponding to the first information field does not include the first specific value, that is, when the network device configures and / or activates the SPS for the terminal device and configures the numerical range corresponding to the first information field and the time domain resource allocation table for the terminal device, the numerical range corresponding to the first information field does not include the first specific value, that is, the network device does not configure the first specific value for the terminal device.

[0184] In some embodiments, when the network device configures and / or activates an SPS for a terminal device and sends the first indication information, and the numerical range corresponding to the first information field includes a first specific value, the network device does not send the third indication information. That is, when the network device configures and / or activates an SPS for a terminal device and configures the numerical range corresponding to the first information field for the terminal device, and the numerical range corresponding to the first information field includes a first specific value, the network device does not configure the time domain resource allocation table for the terminal device, and the terminal device cannot schedule more than one PDSCH according to one DCI.

[0185] As can be seen from the above embodiment, the network device sends first indication information (a numerical range corresponding to the first information field is set), and the numerical range corresponding to the first information field includes a first specific value; the network device sends third indication information (the above-mentioned time domain resource allocation table is set); and the network device configures or activates SPS for the terminal device, and these three cases do not exist simultaneously.

[0186] In the above embodiment, the first specific value is −1. The content of the first specific value has already been described in detail in the embodiment of the first aspect, and the content thereof is incorporated herein, so a detailed description thereof will be omitted here.

[0187] The above-described embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Furthermore, appropriate modifications can be made based on the above-described embodiments. For example, the above-described embodiments may be used alone, or a combination of the above-described embodiments may be used.

[0188] Furthermore, the embodiments of the present invention may be implemented independently or in combination with the embodiments of the second aspect, i.e., the content of the embodiments of the second aspect may be incorporated herein, and the present invention is not limited thereto.Similarly, the content of the embodiments of the second aspect may be implemented independently or in combination with the embodiments of the present invention, i.e., the content of the embodiments of the present invention may be incorporated into the embodiments of the second aspect, and the present invention is not limited thereto.

[0189] As can be seen from the above embodiment, by configuring the network device, the terminal device can support scheduling multiple PDSCHs using one DCI, and at the same time, can support feedback of corresponding HARQ-ACK information.

[0190] <Example of the fourth aspect> In the embodiment of the present invention, a signal receiving method is provided, which will be described from the terminal device side, and is a terminal device-side process corresponding to the method in the embodiment of the third aspect, and the duplicated description of the same content as in the embodiment of the third aspect will be omitted.

[0191] 18 is a diagram illustrating a signal receiving method according to an embodiment of the present invention. As shown in FIG. 18, the method includes the following steps:

[0192] 1801: A terminal device receives first indication information and / or third indication information transmitted by a network device, the first indication information being used to set a numerical range corresponding to a first information field of a first DCI, the third indication information being used to set a time domain resource allocation table to support scheduling more than one PDSCH by one DCI, and the first DCI using the time domain resource allocation table.

[0193] In an embodiment of the present invention, the above-mentioned first information field is used to determine a first time domain location, and the first time domain location is used by the terminal device to send HARQ-ACK information. The related content of the first time domain location and the first value has been described above, so the content is merged here and the detailed description thereof is omitted here.

[0194] In some embodiments, when the terminal device receives the first indication information and the third indication information, the terminal device does not expect the numerical range corresponding to the first information field to include the first specific value.

[0195] In some embodiments, when the terminal device receives the first instruction information and the numerical range corresponding to the first information field includes the first specific value, the terminal device does not expect to receive the third instruction information.

[0196] In the above-mentioned embodiment, when the terminal device receives the first instruction information and the third instruction information, and the numerical range corresponding to the first information field includes the first specific value, the terminal device does not expect the SPS to be set and / or activated.

[0197] In the above-described embodiment, when the terminal device has the SPS configured and / or activated and receives the first indication information and the third indication information, the terminal device does not expect the numerical range corresponding to the first information field to include the first specific value.

[0198] In the above-described embodiment, when the terminal device has an SPS configured and / or activated and receives the first instruction information, and the numerical range corresponding to the first information field includes the first specific value, the terminal device does not expect to receive the third instruction information.

[0199] In the embodiment of the present invention, the following three cases do not exist simultaneously: The terminal device receives the first indication information, and the numerical range corresponding to the first information field includes a first specific value; The terminal device receives the above-mentioned third instruction information; and The terminal device has SPS configured or activated. This is the case.

[0200] In the embodiment of the present invention, the first specific value is −1. The first specific value has been described above, and the details thereof are incorporated herein, so a detailed description thereof will be omitted.

[0201] The above-described embodiments are merely illustrative examples of the present invention, and the present invention is not limited thereto. Furthermore, appropriate modifications can be made based on the above-described embodiments. For example, the above-described embodiments may be used alone, or a combination of the above-described embodiments may be used.

[0202] Furthermore, the embodiments of the present invention may be implemented alone or in combination with the embodiments of the first aspect, i.e., the content of the embodiments of the first aspect may be incorporated therein, and the present invention is not limited thereto. Similarly, the content of the embodiments of the second aspect may be implemented alone or in combination with the embodiments of the present invention, i.e., the content of the embodiments of the present invention may be incorporated into the embodiments of the first aspect, and the present invention is not limited thereto.

[0203] As can be seen from the above embodiment, by configuring the network device, the terminal device can support scheduling multiple PDSCHs using one DCI, and at the same time, can support feedback of corresponding HARQ-ACK information.

[0204] <Example of the fifth aspect> An embodiment of the present invention provides a signal transmission device, which may be, for example, a terminal device, or one or more components or assemblies installed in the terminal device.

[0205] 19 is a diagram showing an example of a signal transmission device according to an embodiment of the present invention. It corresponds to the method according to the embodiment of the first aspect, and a duplicate description of the same content as the embodiment of the first aspect will be omitted here. As shown in FIG. 19, the signal transmission device 1900 includes the following:

[0206] A receiving unit 1901 receives first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, the first DCI being used to schedule a plurality of the PDSCHs; and A transmitting unit 1902: transmits Hybrid Automatic Repeat Acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain position.

[0207] In some embodiments, the receiver 1901 further receives a second DCI, the second DCI indicating the first time domain location.

[0208] In some embodiments, a physical downlink control channel monitoring occasion (PDCCH monitoring occasion) for the transmission of the second DCI is after a PDCCH monitoring occasion for the transmission of the first DCI; or, the PDCCH monitoring occasion for the transmission of the second DCI is not earlier than a PDCCH monitoring occasion for the transmission of the first DCI.

[0209] In some embodiments, the second DCI schedules a PDSCH or does not schedule a PDSCH, where not scheduling a PDSCH includes the second DCI being used to activate or deactivate an SPS, and / or the second DCI being used to indicate dormancy of an Scell, and / or the second DCI adopting DCI format 2_x.

[0210] In some embodiments, the first DCI indicates a first PDSCH group index, and the second DCI indicates a HARQ-ACK information report for the first PDSCH group index.

[0211] In some embodiments, the second DCI indicates reporting of HARQ-ACK information based on a Type-3 HARQ-ACK codebook.

[0212] In some embodiments, the second DCI includes an information field for requesting or triggering a Type-3 HARQ-ACK codebook-based HARQ-ACK information report, and the value of the information field is 1.

[0213] In some embodiments, the second DCI is used to schedule more than one PDSCH; or the second DCI is not used to schedule more than one PDSCH.

[0214] In some embodiments, the first DCI schedules one or more PDSCHs, and the terminal device receives a semi-persistently scheduled PDSCH (SPS PDSCH) after the last PDSCH scheduled by the first DCI; or the first DCI indicates one or more PDSCHs, and the terminal device receives an SPS PDSCH after the last PDSCH indicated by the first DCI.

[0215] In some embodiments, the first time domain location is not later than the time domain location corresponding to the SPS PDSCH, and the time domain location corresponding to the SPS PDSCH is used to transmit HARQ-ACK information for the SPS PDSCH.

[0216] In some embodiments, the terminal device receives a second DCI after a time domain position corresponding to the SPS PDSCH, the second DCI indicating the first time domain position.

[0217] In some embodiments, the first DCI does not indicate the first time-domain location, for example, the first DCI includes a first information field for indicating a first time-domain location, the first information field indicates a first specific value, and the first specific value does not have a corresponding first time-domain location.

[0218] In some embodiments, the first specific value is −1.

[0219] In some embodiments, the first DCI indicates or schedules only one PDSCH.

[0220] In some embodiments, the first DCI indicates or schedules more than one PDSCH and the terminal device does not have SPS configured and / or activated.

[0221] In some embodiments, the receiving unit 1901 further receives first instruction information, which is used to set a numerical range corresponding to a first information field of the first DCI, and the numerical range includes a first specific value.

[0222] In some embodiments, the sending unit 1902 further sends second indication information, and the second indication information is used to indicate at least one of the following: Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain location is not indicated by the first DCI; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when more than one PDSCH is scheduled by the first DCI and the first time domain location is not indicated; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated by the first DCI; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; and When SPS is configured and / or activated, whether the terminal device supports scheduling more than one PDSCH by the first DCI and feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated. is.

[0223] An embodiment of the present invention further provides a signal receiving device, which may be, for example, a network device, or one or more components or assemblies configured in the network device.

[0224] 20 is a diagram showing an example of a signal receiving device according to an embodiment of the present invention. It corresponds to the method according to the embodiment of the second aspect, and a duplicate description of the same content as the embodiment of the second aspect will be omitted here. As shown in FIG. 20, the signal receiving device 2000 includes the following:

[0225] A transmitter 2001: transmits first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, where the first DCI is used to schedule a plurality of the PDSCHs; and A receiving unit 2002 receives Hybrid Automatic Repeat Acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain position.

[0226] In some embodiments, the transmitter 2001 further transmits a second DCI, the second DCI indicating the first time domain location.

[0227] In some embodiments, a physical downlink control channel monitoring occasion (PDCCH monitoring occasion) for the transmission of the second DCI is after a PDCCH monitoring occasion for the transmission of the first DCI; or, the PDCCH monitoring occasion for the transmission of the second DCI is not earlier than a PDCCH monitoring occasion for the transmission of the first DCI.

[0228] In some embodiments, the second DCI schedules a PDSCH or does not schedule a PDSCH, where not scheduling a PDSCH includes the second DCI being used to activate or deactivate an SPS, and / or the second DCI being used to indicate dormancy of an Scell, and / or the second DCI adopting DCI format 2_x.

[0229] In some embodiments, the first DCI indicates a first PDSCH group index, and the second DCI indicates a HARQ-ACK information report for the first PDSCH group index.

[0230] In some embodiments, the second DCI indicates reporting of HARQ-ACK information based on a Type-3 HARQ-ACK codebook.

[0231] In some embodiments, the second DCI includes an information field for requesting or triggering a Type-3 HARQ-ACK codebook-based HARQ-ACK information report, and the value of the information field is 1.

[0232] In some embodiments, the second DCI is used to schedule more than one PDSCH; or the second DCI is not used to schedule more than one PDSCH.

[0233] In some embodiments, the first DCI schedules one or more PDSCHs, and the network device transmits a semi-persistently scheduled PDSCH (SPS PDSCH) after the last PDSCH scheduled by the first DCI; or the first DCI indicates one or more PDSCHs, and the network device transmits an SPS PDSCH after the last PDSCH indicated by the first DCI.

[0234] In some embodiments, the first time domain location is not later than the time domain location corresponding to the SPS PDSCH, and the time domain location corresponding to the SPS PDSCH is used to transmit HARQ-ACK information for the SPS PDSCH.

[0235] In some embodiments, the network device transmits a second DCI after a time domain location corresponding to the SPS PDSCH, the second DCI indicating the first time domain location.

[0236] In some embodiments, the first DCI does not indicate the first time-domain location, for example, the first DCI includes a first information field for indicating a first time-domain location, the first information field indicates a first specific value, and the first specific value does not have a corresponding first time-domain location.

[0237] In some embodiments, the first specific value is −1.

[0238] In some embodiments, the first DCI indicates or schedules only one PDSCH.

[0239] In some embodiments, the first DCI indicates or schedules more than one PDSCH and the terminal device does not have SPS configured and / or activated.

[0240] In some embodiments, the transmitting unit 2001 further transmits first instruction information, which is used to set a numerical range corresponding to a first information field of the first DCI, and the numerical range includes a first specific value.

[0241] In some embodiments, the receiving unit 2002 further receives second indication information, and the second indication information is used to indicate at least one of the following: Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain location is not indicated by the first DCI; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when more than one PDSCH is scheduled by the first DCI and the first time domain location is not indicated; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated by the first DCI; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates more than one PDSCH and does not indicate the first time domain location; and When SPS is configured and / or activated, whether the terminal device supports scheduling more than one PDSCH by the first DCI and feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated. is.

[0242] An embodiment of the present invention further provides a signal transmission device, which may be, for example, a network device, or one or more components or assemblies installed in the network device.

[0243] 21 is a diagram showing an example of a signal transmission device according to an embodiment of the present invention. It corresponds to the method according to the embodiment of the third aspect, and the same content as the embodiment of the third aspect will not be described here. As shown in FIG. 21, the signal transmission device 2100 includes the following:

[0244] Transmitting unit 2101: Transmits first indication information and / or third indication information to a terminal device, the first indication information is used to set a numerical range corresponding to a first information field of a first DCI, and the third indication information is used to set a time domain resource allocation table to support scheduling more than one PDSCH by one DCI, and the time domain resource allocation table corresponds to the first DCI.

[0245] In some embodiments, the first DCI is DCI format 1_1 or DCI format 1_2.

[0246] In some embodiments, the first information field is used to determine a first time domain location, and the first time domain location is used by the terminal device to transmit HARQ-ACK information.

[0247] In some embodiments, when the network device sends the first indication information and the third indication information, the numerical range does not include the first specific value.

[0248] In some embodiments, when the network device sends the first indication information and the value range includes a first specific value, the network device does not send the third indication information.

[0249] In some embodiments, when the network device sends the first instruction information and the third instruction information and the numerical range includes a first specific value, the network device does not configure and / or activate an SPS for the terminal device.

[0250] In some embodiments, when the network device configures and / or activates an SPS for the terminal device and sends the first instruction information and the third instruction information, the numerical range does not include the first specific value.

[0251] In some embodiments, when the network device configures and / or activates an SPS for the terminal device and sends first indication information, and the numerical range includes a first specific value, the network device does not send the third indication information.

[0252] In some embodiments, the following three cases do not exist simultaneously: the network device sends the first instruction information, and the numerical range includes a first specific value; The network device sends the third instruction information; and The network device configures or activates an SPS for the terminal device. This is the case.

[0253] In some embodiments, the first specific value is −1.

[0254] An embodiment of the present invention further provides a signal receiving device, which may be, for example, a terminal device or one or more components or assemblies installed in the terminal device.

[0255] 22 is a diagram illustrating an example of a signal receiving device according to an embodiment of the present invention. It corresponds to the method according to the fourth aspect of the present invention, and the same content as the fourth aspect of the present invention will not be described again. As shown in FIG. 22, the signal receiving device 2200 includes:

[0256] Receiving unit 2201: Receives first indication information and / or third indication information transmitted by a network device, the first indication information being used to set a numerical range corresponding to a first information field of a first DCI, and the third indication information being used to set a time domain resource allocation table to support scheduling more than one PDSCH by one DCI, the time domain resource allocation table corresponding to the first DCI.

[0257] In some embodiments, the first value is used to determine a first time domain location, and the first time domain location is used by the terminal device to transmit HARQ-ACK information.

[0258] In some embodiments, when the receiving unit 2201 receives the first indication information and the third indication information, the receiving unit 2201 does not expect the value range to include the first specific value.

[0259] In some embodiments, when the receiving unit 2201 receives the first indication information and the value range includes the first specific value, the receiving unit 2201 does not expect to receive the third indication information.

[0260] In some embodiments, when the receiving unit 2201 receives the first instruction information and the third instruction information and the numerical range includes a first specific value, the receiving unit 2201 does not expect an SPS to be set and / or activated.

[0261] In some embodiments, when the terminal device has SPS configured and / or activated and receives the first instruction information and the third instruction information, the receiving unit 2201 does not expect the numerical range to include the first specific value.

[0262] In some embodiments, when the terminal device has SPS configured and / or activated and receives first instruction information, and the numerical range includes a first specific value, the receiving unit 2201 does not expect to receive the third instruction information.

[0263] In some embodiments, the following three cases do not exist simultaneously: The receiving unit 2201 receives the first instruction information, and the numerical range includes a first specific value; The receiving unit 2201 receives the third instruction information; and The terminal device has SPS configured or activated. This is the case.

[0264] In some embodiments, the first specific value is −1.

[0265] Although the embodiments of the present invention have been described above as examples, the present invention is not limited to these, and appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments can be used alone, or two or more of the above-described embodiments can be used in combination.

[0266] Although the above description exemplifies only the components or modules related to the present invention, the present invention is not limited thereto. The signal transmitting device 1900 / 2100 and the signal receiving device 2000 / 2200 may further include other components or modules, and reference can be made to the related art for specific details of these components or modules. Furthermore, the above-described components or modules may be realized by hardware such as a processor, a memory, a transmitter, and a receiver, but the present invention is not limited thereto.

[0267] As can be seen from the above embodiments, one DCI can support scheduling multiple PDSCHs, and also support feedback of corresponding HARQ-ACK information.

[0268] <Example of the sixth aspect> An embodiment of the present invention further provides a communication system, which includes a network device and a terminal device.

[0269] In some embodiments, the terminal device is configured to perform the method according to an embodiment of the first aspect, and the network device is configured to perform the method according to an embodiment of the second aspect.

[0270] In some embodiments, the terminal device is configured to perform the method according to the embodiment of the fourth aspect, and the network device is configured to perform the method according to the embodiment of the third aspect.

[0271] In some embodiments, the terminal device is configured to perform the methods described in the embodiments of the first aspect and the embodiments of the fourth aspect, and the network device is configured to perform the methods described in the embodiments of the second aspect and the embodiments of the third aspect.

[0272] Since the methods have already been described in detail in the first to fourth aspects, the contents thereof are incorporated herein and detailed description thereof will be omitted here.

[0273] In the embodiment of the present invention, a terminal device is further provided, and the terminal device may be, for example, a UE, but the present invention is not limited thereto and may also be other terminal devices.

[0274] 23 is a diagram illustrating a terminal device according to an embodiment of the present invention. As shown in FIG. 23, the terminal device 2300 may include a processor 2301 and a memory 2302, where the memory 2302 stores data and programs and is connected to the processor 2301. Note that this diagram is merely an example, and other types of structures may be used to supplement or replace this structure to achieve telecommunication or other functions.

[0275] For example, the processor 2301 may be configured to execute a program to implement the method described in the embodiment of the first aspect and / or the method described in the embodiment of the fourth aspect.

[0276] As shown in Fig. 23, the terminal device 2300 may further include a communication module 2303, an input unit 2304, a display 2305, a power supply 2306, etc. The functions of these components are the same as those of the prior art, so detailed description thereof will be omitted here. Note that the terminal device 2300 does not need to include all of the components shown in Fig. 23, and these components are not essential. Furthermore, the terminal device 2300 may further include components not shown in Fig. 23, and reference can be made to the prior art for this information.

[0277] The embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto and may also be other network devices.

[0278] 24 is a block diagram of a network device according to an embodiment of the present invention. As shown in FIG. 24, the network device 2400 may include a processor 2401 and a memory 2402, and the memory 2402 is connected to the processor 2401. The memory 2402 can store various data and can also store programs for information processing, and can execute the programs under the control of the processor 2401.

[0279] For example, the processor 2401 may be configured to execute a program to implement the methods described in the embodiments of the second and / or third aspects.

[0280] 24, the network device 2400 may further include transceivers 2403 and 2404. The functions of these components are the same as those of the prior art, and detailed description thereof will be omitted here. The network device 2400 does not need to include all the components shown in FIG. 24. The network device 2400 may further include components not shown in FIG. 24, and the prior art can be referred to for this information.

[0281] An embodiment of the present invention further provides a computer program, which, when executed on a terminal device, causes the terminal device to perform the method described in the embodiment of the first aspect and / or the fourth aspect.

[0282] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a terminal device to perform the method described in the embodiment of the first and / or fourth aspect.

[0283] An embodiment of the present invention further provides a computer program, which, when executed by a network device, causes the network device to perform the method described in the embodiment of the second and / or third aspect.

[0284] An embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes a network device to perform the method described in the embodiment of the first and / or third aspect.

[0285] The above-described apparatus and methods may be realized by software or hardware, or by a combination of hardware and software. The present invention also relates to a computer-readable program as described below, which, when executed by a logic component, causes the logic component to realize the above-described apparatus or component, or to perform the above-described various methods or steps. The logic component may be, for example, an FPGA (Field Programmable Gate Array), a microprocessor, or a processing unit used in a computer. The present invention also relates to a storage medium, such as a hard disk, magnetic disk, optical hard disk, DVD, or flash memory, that stores the above-described program.

[0286] Furthermore, one or more combinations of the functional blocks illustrated in the figures and / or one or more combinations of the functional blocks may be implemented as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic component, a discrete gate or transistor logic component, a discrete hardware assembly, or any other suitable combination for performing the functions described herein. Also, one or more combinations of the functional blocks illustrated in the figures and / or one or more combinations of the functional blocks may be further implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors communicatively coupled with a DSP, or any other configuration.

[0287] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and any modifications to the present invention that do not depart from the spirit of the present invention fall within the technical scope of the present invention.

[0288] Furthermore, the following additional notes are disclosed regarding the above-described embodiments.

[0289] (Appendix 1) 1. A signal transmission method, comprising: A terminal device receives first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, the first DCI being used to schedule a plurality of the PDSCHs; and The method includes transmitting, by the terminal device, hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain position.

[0290] (Appendix 2) 2. The method of claim 1, comprising: The method further comprises: The terminal device includes receiving a second DCI; The second DCI indicates the first time domain location.

[0291] (Appendix 3) 10. The method of claim 2, a physical downlink control channel monitoring occasion (PDCCH monitoring occasion) for the transmission of the second DCI is after a PDCCH monitoring occasion for the transmission of the first DCI; or A method, wherein a PDCCH monitoring occasion for transmission of the second DCI is not earlier than a PDCCH monitoring occasion for transmission of the first DCI.

[0292] (Appendix 4) 10. The method of claim 2, The second DCI schedules a PDSCH or does not schedule a PDSCH.

[0293] (Appendix 5) 5. The method of claim 4, The second DCI does not schedule a PDSCH, The method includes the second DCI being used to activate or deactivate SPS, and / or the second DCI being used to indicate dormancy of an Scell, and / or the second DCI adopting DCI format 2_x.

[0294] (Appendix 6) 10. The method of claim 2, The first DCI indicates a first PDSCH group index, and the second DCI indicates a HARQ-ACK information report for the first PDSCH group index.

[0295] (Appendix 7) 10. The method of claim 2, The second DCI indicates a Type-3 HARQ-ACK codebook-based HARQ-ACK information report.

[0296] (Appendix 8) 8. The method according to claim 2 or 7, The second DCI includes an information field for requesting or triggering a Type-3 HARQ-ACK codebook-based HARQ-ACK information report, and the value of the information field is 1.

[0297] (Appendix 9) 10. The method of claim 2, the second DCI is for scheduling multiple PDSCHs; or The second DCI is not for scheduling multiple PDSCHs.

[0298] (Appendix 10) 10. The method according to any one of appendices 1-9, comprising: The first DCI schedules one or more PDSCHs, and the terminal device receives a semi-persistently scheduled PDSCH (SPS PDSCH) after the last PDSCH scheduled by the first DCI; or The first DCI indicates one or more PDSCHs, and the terminal device receives an SPS PDSCH after the last PDSCH indicated by the first DCI.

[0299] (Appendix 11) 11. The method of claim 10, The first time domain location is not later than a time domain location corresponding to the SPS PDSCH, and the time domain location corresponding to the SPS PDSCH is used to transmit HARQ-ACK information of the SPS PDSCH.

[0300] (Appendix 12) 11. The method of claim 10, The terminal device receives a second DCI after a time domain position corresponding to the SPS PDSCH, the second DCI indicating the first time domain position.

[0301] (Appendix 13) 13. The method according to any one of appendices 1-12, comprising: The first DCI does not indicate the first time domain location.

[0302] (Appendix 14) 14. The method of claim 1 or 13, The first DCI includes a first information field for indicating a first time domain location, and the first information field indicates a first specific value.

[0303] (Appendix 15) 15. The method of claim 14, The first particular value does not have a corresponding first time-domain position.

[0304] (Appendix 16) 15. The method of claim 14, The method, wherein the first particular value is −1.

[0305] (Appendix 17) 14. The method of claim 13, The first DCI indicates or schedules only one PDSCH.

[0306] (Appendix 18) 14. The method of claim 13, A method in which the first DCI indicates or schedules multiple PDSCHs, and the terminal device does not configure and / or activate SPS.

[0307] (Appendix 19) 19. The method according to any one of appendices 1-18, comprising: The method further comprises: receiving first instruction information by the terminal device; The method, wherein the first indication information is used to set a numerical range corresponding to a first information field of the first DCI, and the numerical range includes a first specific value.

[0308] (Appendix 20) 19. The method according to any one of appendices 1-18, comprising: The method further comprises: the terminal device transmitting second instruction information; The second indication information is used to indicate at least one of the following: Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain location is not indicated by the first DCI; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates multiple PDSCHs but does not indicate the first time domain location; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCHs scheduled by the first DCI when the terminal device schedules multiple PDSCHs using the first DCI and does not indicate the first time domain location; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated by the first DCI; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates multiple PDSCHs and does not indicate the first time domain location; and When SPS is configured and / or activated, whether the terminal device supports scheduling a plurality of PDSCHs by the first DCI and feeding back HARQ-ACK information corresponding to the PDSCHs scheduled by the first DCI when the first time domain position is not indicated. That's the method.

[0309] (Appendix 21) 1. A signal reception method, comprising: A network device transmits first downlink control information (DCI) and a physical downlink shared channel (PDSCH) scheduled by the first DCI, the first DCI being used to schedule a plurality of the PDSCHs; and The method includes receiving, by the network device, hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to a PDSCH scheduled by the first DCI at a first time domain location.

[0310] (Appendix 22) 22. The method of claim 21, The method further comprises: The network device transmits a second DCI; The second DCI indicates the first time domain location.

[0311] (Appendix 23) 23. The method of claim 22, a physical downlink control channel monitoring occasion (PDCCH monitoring occasion) for the transmission of the second DCI is after a PDCCH monitoring occasion for the transmission of the first DCI; or A method, wherein a PDCCH monitoring occasion for transmission of the second DCI is not earlier than a PDCCH monitoring occasion for transmission of the first DCI.

[0312] (Appendix 24) 23. The method of claim 22, The second DCI schedules a PDSCH or does not schedule a PDSCH.

[0313] (Appendix 25) 25. The method of claim 24, The second DCI does not schedule a PDSCH, The method includes the second DCI being used to activate or deactivate SPS, and / or the second DCI being used to indicate dormancy of an Scell, and / or the second DCI adopting DCI format 2_x.

[0314] (Appendix 26) 23. The method of claim 22, The first DCI indicates a first PDSCH group index, and the second DCI indicates a HARQ-ACK information report for the first PDSCH group index.

[0315] (Appendix 27) 23. The method of claim 22, The second DCI indicates a Type-3 HARQ-ACK codebook-based HARQ-ACK information report.

[0316] (Appendix 28) 28. The method according to claim 22 or 27, The second DCI includes an information field for requesting or triggering a Type-3 HARQ-ACK codebook-based HARQ-ACK information report, and the value of the information field is 1.

[0317] (Appendix 29) 23. The method of claim 22, the second DCI is used to schedule multiple PDSCHs; or The second DCI is not used to schedule multiple PDSCHs.

[0318] (Appendix 30) 29. The method of claim 1, further comprising: The first DCI schedules one or more PDSCHs, and the network device transmits a semi-persistently scheduled PDSCH (SPS PDSCH) after the last PDSCH scheduled by the first DCI; or The first DCI indicates one or more PDSCHs, and the network device transmits an SPS PDSCH after the last PDSCH indicated by the first DCI.

[0319] (Appendix 31) 31. The method of claim 30, The first time domain location is not later than a time domain location corresponding to the SPS PDSCH, and the time domain location corresponding to the SPS PDSCH is used to transmit HARQ-ACK information of the SPS PDSCH.

[0320] (Appendix 32) 31. The method of claim 30, The network device transmits a second DCI after a time domain position corresponding to the SPS PDSCH, wherein the second DCI indicates the first time domain position.

[0321] (Appendix 33) 33. The method according to any one of claims 21-32, comprising: The first DCI does not indicate the first time domain location.

[0322] (Appendix 34) 24. The method of claim 21 or 33, The first DCI includes a first information field for indicating a first time domain location, and the first information field indicates a first specific value.

[0323] (Appendix 35) 35. The method of claim 34, The first particular value does not have a corresponding first time-domain position.

[0324] (Appendix 36) 35. The method of claim 34, The method, wherein the first particular value is −1.

[0325] (Appendix 37) 34. The method of claim 33, The first DCI indicates or schedules only one PDSCH.

[0326] (Appendix 38) 34. The method of claim 33, A method in which the first DCI indicates or schedules multiple PDSCHs, and the terminal device does not configure and / or activate SPS.

[0327] (Appendix 39) 39. The method of any one of claims 21-38, comprising: The method further comprises: The network device transmits first instruction information; The method, wherein the first indication information is used to set a numerical range corresponding to a first information field of the first DCI, and the numerical range includes a first specific value.

[0328] (Appendix 40) 39. The method of any one of claims 21-38, comprising: The method further comprises: receiving the second instruction information from the network device; Including, The second indication information is used to indicate at least one of the following: Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain location is not indicated by the first DCI; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates multiple PDSCHs but does not indicate the first time domain location; Whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCHs scheduled by the first DCI when the terminal device schedules multiple PDSCHs using the first DCI and does not indicate the first time domain location; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first time domain position is not indicated by the first DCI; When SPS is configured and / or activated, whether the terminal device supports feeding back HARQ-ACK information corresponding to the PDSCH scheduled by the first DCI when the first DCI indicates multiple PDSCHs and does not indicate the first time domain location; and When SPS is configured and / or activated, the terminal device supports scheduling a plurality of PDSCHs by the first DCI, and feeding back HARQ-ACK information corresponding to the PDSCHs scheduled by the first DCI when the first time domain position is not indicated. mosquito A method 。 (Appendix 41) 1. A signal transmission method, comprising: the network device transmitting first instruction information and / or third instruction information to the terminal device; The first instruction information is used to set a numerical range corresponding to a first information field of a first DCI, and the third instruction information is used to set a time domain resource allocation table to support scheduling of multiple PDSCHs by one DCI, and the time domain resource allocation table corresponds to the first DCI.

[0329] (Appendix 42) 42. The method of claim 41, A method, wherein the first DCI is DCI format 1_1 or DCI format 1_2.

[0330] (Appendix 43) 42. The method of claim 41, The method, wherein the first information field is used to determine a first time domain position, and the first time domain position is used by the terminal device to transmit HARQ-ACK information.

[0331] (Appendix 44) 42. The method of claim 41, When the network device sends the first indication information and the third indication information, the numerical range does not include the first specific value; or The method, wherein when the network device sends first indication information and the numerical range includes a first specific value, the network device does not send the third indication information.

[0332] (Appendix 45) 45. The method of claim 44, When the network device sends the first indication information and the third indication information and the numerical range includes a first specific value, the network device does not configure and / or activate an SPS for the terminal device; or When the network device configures and / or activates an SPS for the terminal device and sends the first indication information and the third indication information, the numerical range does not include the first specific value; or A method in which the network device configures and / or activates an SPS for the terminal device and sends first instruction information, and if the numerical range includes a first specific value, the network device does not send the third instruction information.

[0333] (Appendix 46) 42. The method of claim 41, The following three cases cannot exist simultaneously: the network device sends the first instruction information, and the numerical range includes a first specific value; The network device sends the third instruction information; and The network device configures or activates an SPS for the terminal device. If, how.

[0334] (Appendix 47) 47. The method of any one of claims 44 to 46, comprising: The method, wherein the first particular value is −1.

[0335] (Appendix 48) 1. A signal reception method, comprising: The terminal device receives first instruction information and / or third instruction information transmitted by the network device; The first instruction information is used to set a numerical range corresponding to a first information field of a first DCI, and the third instruction information is used to set a time domain resource allocation table to support scheduling of multiple PDSCHs by one DCI, and the first DCI uses the time domain resource allocation table.

[0336] (Appendix 49) 49. The method of claim 48, The method, wherein the first value is used to determine a first time domain position, and the first time domain position is used by the terminal device to transmit HARQ-ACK information.

[0337] (Appendix 50) 49. The method of claim 48, When the terminal device receives the first indication information and the third indication information, the terminal device does not expect the numerical range to include the first specific value; or A method, wherein when the terminal device receives first indication information and the numerical range includes a first specific value, the terminal device does not expect to receive the third indication information.

[0338] (Appendix 51) 51. The method of claim 50, When the terminal device receives the first indication information and the third indication information, and the numerical range includes a first specific value, the terminal device does not expect the SPS to be configured and / or activated; or When the terminal device has an SPS configured and / or activated and receives the first indication information and the third indication information, the terminal device does not expect the value range to include the first specific value; or A method in which, when the terminal device has SPS configured and / or activated and receives first instruction information, and the numerical range includes a first specific value, the terminal device does not expect to receive the third instruction information.

[0339] (Appendix 52) 49. The method of claim 48, The following three cases cannot exist simultaneously: the terminal device receives the first instruction information, and the numerical range includes a first specific value; The terminal device receives the third instruction information; and The terminal device has SPS configured or activated. If, how.

[0340] (Appendix 53) 53. The method of any one of claims 50 to 52, comprising: The method, wherein the first specific value is −1.

[0341] (Appendix 54) A terminal device including a storage unit and a processor, The storage device stores a computer program, A terminal device, wherein the processor is configured to execute the computer program to implement the method of any one of Supplements 1 to 20 or any one of Supplements 48 to 53.

[0342] (Appendix 55) A network device including a storage device and a processor, The storage device stores a computer program, 48. A network device, wherein the processor is configured to execute the computer program to implement the method of any one of Supplementary Notes 21 to 40 or any one of Supplementary Notes 41 to 47.

[0343] (Appendix 56) 56. A communication system comprising the network device of claim 55 and the terminal device of claim 54.

Claims

1. A device for transmitting a signal configured in a terminal device, a receiver for receiving first downlink control information (DCI) in a first PDCCH monitoring opportunity and a plurality of physical downlink shared channels (PDSCHs) scheduled by the first DCI, the first DCI including a first information field providing an inapplicable value; and a transmitter configured to transmit hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to one PDSCH scheduled by the first DCI on a PUCCH or a PUSCH in a slot indicated by a value of a first information field in the second DCI; the receiving unit further receives third instruction information for configuring a time domain resource allocation table corresponding to the first DCI and / or the second DCI; In the time domain resource allocation table, one or more rows include a plurality of start and length indicators (SLIVs); a value m of a time domain resource allocation field in the first DCI and / or the second DCI provides a row index m+1 in the time domain resource allocation table; the number of PDSCHs scheduled by the first DCI is equal to the number of SLIVs in a row of the time domain resource allocation table indicated by a second information field in the first DCI, and / or the number of PDSCHs scheduled by the second DCI is equal to the number of SLIVs in a row of the time domain resource allocation table indicated by a second information field in the second DCI; the slot indicated by the value of the first information field in the second DCI is UL slot n+k; where k is the number of slots, and the value of k is indicated by the first information field in the second DCI; UL slot n is the last UL slot overlapping with the DL slot in which the last PDSCH of one or more PDSCHs scheduled by the second DCI is located, or the last UL slot overlapping with the DL slot in which one PDCCH that provides the second DCI is located.

2. 10. The apparatus of claim 1, The receiver further receives the second DCI at a PDCCH monitoring opportunity after the first PDCCH monitoring opportunity.

3. 3. The apparatus of claim 2, The slot indicated by the value of the first information field in the second DCI is not later than the slot of HARQ-ACK information responsive to reception of an SPS PDSCH received after the plurality of PDSCHs scheduled by the first DCI.

4. 4. The apparatus of claim 3, The terminal device is not provided with first information used to enable an enhanced Type-2 HARQ-ACK codebook.

5. 4. The apparatus of claim 3, The second DCI indicates a HARQ-ACK information report for the same PDSCH group index as indicated by the first DCI.

6. 6. The apparatus of claim 5, The terminal device is provided with first information used to enable an enhanced Type-2 HARQ-ACK codebook.

7. 4. The apparatus of claim 3, The second DCI includes a One-shot HARQ-ACK request field having a value of 1, and the HARQ-ACK information is included in a Type-3 HARQ-ACK codebook.

8. 8. The apparatus of claim 7, The terminal device is provided with second information used to enable a Type-3 HARQ-ACK codebook.

9. 8. The apparatus of claim 7, The first DCI does not indicate the release of an SPS PDSCH.

10. 10. The apparatus of claim 1, The receiver receives the second DCI after a slot of HARQ-ACK information acknowledging reception of an SPS PDSCH received after the plurality of PDSCHs scheduled by the first DCI.

11. 11. The apparatus of claim 10, The second DCI indicates a HARQ-ACK information report for the same PDSCH group index as indicated by the first DCI.

12. 12. The apparatus of claim 11, The terminal device is provided with first information used to enable an enhanced Type-2 HARQ-ACK codebook.

13. 11. The apparatus of claim 10, The second DCI includes a One-shot HARQ-ACK request field having a value of 1, and the HARQ-ACK information is included in a Type-3 HARQ-ACK codebook.

14. 14. The apparatus of claim 13, The terminal device is provided with second information used to enable a Type-3 HARQ-ACK codebook.

15. 14. The apparatus of claim 13, The first DCI does not indicate the release of an SPS PDSCH.

16. 10. The apparatus of claim 1, the receiving unit receives first instruction information; a first information field in the first DCI providing an inapplicable value from a value set by the first indication information; An apparatus wherein the inapplicable value is −1.

17. A device for receiving a signal configured in a network device, a transmitter for transmitting first downlink control information (DCI) and a plurality of physical downlink shared channels (PDSCHs) scheduled by the first DCI, the first DCI including a first information field providing an inapplicable value; and a receiving unit for receiving hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to one PDSCH scheduled by the first DCI on a PUCCH or a PUSCH in a slot indicated by a value of a first information field in the second DCI; The transmitter further transmits third instruction information for configuring a time domain resource allocation table corresponding to the first DCI and / or the second DCI; In the time domain resource allocation table, one or more rows include a plurality of start and length indicators (SLIVs); a value m of a time domain resource allocation field in the first DCI and / or the second DCI provides a row index m+1 in the time domain resource allocation table; the number of PDSCHs scheduled by the first DCI is equal to the number of SLIVs in a row of the time domain resource allocation table indicated by a second information field in the first DCI, and / or the number of PDSCHs scheduled by the second DCI is equal to the number of SLIVs in a row of the time domain resource allocation table indicated by a second information field in the second DCI; the slot indicated by the value of the first information field in the second DCI is UL slot n+k; where k is the number of slots, and the value of k is indicated by the first information field in the second DCI; UL slot n is the last UL slot overlapping with the DL slot in which the last PDSCH of one or more PDSCHs scheduled by the second DCI is located, or the last UL slot overlapping with the DL slot in which one PDCCH that provides the second DCI is located.

18. A communication system including a network device and a terminal device, The terminal device Receive first downlink control information (DCI) in a first PDCCH monitoring opportunity and multiple physical downlink shared channels (PDSCHs) scheduled by the first DCI, the first DCI including a first information field providing an inapplicable value; and Transmitting hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to one PDSCH scheduled by the first DCI on a PUCCH or a PUSCH in a slot indicated by a value of a first information field in the second DCI; The network device comprises: Transmitting the first DCI and the plurality of physical downlink shared channels (PDSCHs) scheduled by the first DCI; and receiving hybrid automatic repeat acknowledgement (HARQ-ACK) information corresponding to the one PDSCH scheduled by the first DCI; The terminal device further receives third instruction information for configuring a time domain resource allocation table corresponding to the first DCI and / or the second DCI; In the time domain resource allocation table, one or more rows include a plurality of start and length indicators (SLIVs); a value m of a time domain resource allocation field in the first DCI and / or the second DCI provides a row index m+1 in the time domain resource allocation table; the number of PDSCHs scheduled by the first DCI is equal to the number of SLIVs in a row of the time domain resource allocation table indicated by a second information field in the first DCI, and / or the number of PDSCHs scheduled by the second DCI is equal to the number of SLIVs in a row of the time domain resource allocation table indicated by a second information field in the second DCI; the slot indicated by the value of the first information field in the second DCI is UL slot n+k; where k is the number of slots, and the value of k is indicated by the first information field in the second DCI; A communication system, wherein UL slot n is the last UL slot overlapping with the DL slot in which the last PDSCH of one or more PDSCHs scheduled by the second DCI is located, or the last UL slot overlapping with the DL slot in which one PDCCH that provides the second DCI is located.

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