Information feedback method, information receiving method and device

Abstract

The embodiments of the present invention provide an information receiving method, an information transmitting method, and an information feedback method and device, which includes a first receiving unit (1101) for receiving downlink control information for scheduling a PDSCH transmitted by a network device, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information including a plurality of SLIVs, and a second receiving unit (1102) for receiving one or more PDSCHs among the PDSCHs scheduled by the downlink control information.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION Embodiments of the present invention relate to the field of communications technology. [Background technology]

[0002] A Physical Downlink Shared Channel (PDSCH) is one of the physical downlink channels in a wireless communication system and carries downlink data. The PDSCH may be scheduled by downlink control information (DCI). The DCI for scheduling the PDSCH includes at least information indicating the resource of the PDSCH. In the current new radio (NR) system, multiple DCI formats for scheduling the PDSCH, such as DCI format 1_0 (PDSCH), DCI format 1_1 (PDSCH), and DCI format 1_2 (PDSCH), are defined. To meet different scheduling requirements, the specific information and / or size included in the DCI of different DCI formats differ.

[0003] The PDSCH may also be semi-statically configured or semi-persistently scheduled. In new radio NR, a semi-statically configured or semi-persistently scheduled PDSCH is referred to, for example, as a semi-statically scheduled (Semi-Persistent Scheduling (SPS)) PDSCH (SPS PDSCH). In some cases, after providing an SPS configuration via radio resource control (RRC) signaling, the network device needs to activate the SPS configuration using a DCI before the terminal device receives the SPS PDSCH accordingly. In addition to scheduling the PDSCH and activating the SPS, the DCI may also be used to deactivate the SPS, idle cells, etc.

[0004] In order to allow a network device to determine whether the terminal device has successfully received downlink data and / or control information, the terminal device generally needs to feed back Hybrid Automatic Repeat Request (HARQ) feedback information (e.g., ACK / NACK). Depending on the scheduling of the network device, the HARQ feedback information can be carried by a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH). Generally, one PUCCH or PUSCH can carry one HARQ feedback codebook, which includes one or more HARQ feedback information bits.

[0005] The above description of the background art is merely for the purpose of explaining the configuration of the present invention more clearly and completely, and is provided for the understanding of those skilled in the art. These configurations described in the background art of the present invention should not be construed as being well known to those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0006] Currently, the NR system supports multiple transmit / receive points (TRPs). In a scenario with multiple TRPs, different TRPs can repeatedly transmit the same transmission block (TB). Figure 1 is a schematic diagram of a scenario with two TRPs. As shown in Figure 1, TRP0 and TRP1 transmit the same TB0 to a terminal device. The repeated transmission method for the TB can support multiple repetition (also referred to as repetition) schemes, including spatial division multiplexing (SDM), frequency division multiplexing (FDM), intra-slot time division multiplexing (TDM), and inter-slot time division multiplexing (TDM), such as "fdmSchemeA," "fdmSchemeB," and "tdmSchemeA." The specific repetition scheme is configurable, for example, via a parameter repetitionScheme in higher layer signaling. If repetitionScheme is set to "tdmSchemeA," the repetition scheme adopts "tdmSchemeA."

[0007] The following further explains "tdmSchemeA".

[0008] When "tdmSchemeA" is configured, assuming that two transmission configuration indication (TCI) states are indicated in the DCI, the terminal device will receive two PDSCH transmission occasions, each corresponding to a different TCI state, with the first PDSCH transmission occasion corresponding to the first TCI state and the second PDSCH transmission occasion corresponding to the second TCI state.

[0009] FIG. 2 is a schematic diagram of the two PDSCH transmission occasions. As shown in FIG. 2, the two PDSCH transmission occasions are in the same slot and do not overlap. The first PDSCH transmission occasion (1 stThe symbols for the second PDSCH transmission occasion (2 nd The number of symbols in the first PDSCH transmission occasion (StartingSymbolOffsetK) is the same as the number of symbols in the first PDSCH transmission occasion, and the first symbol is determined based on an offset value relative to the last symbol of the first PDSCH transmission occasion. Specifically, the first symbol starts after the offset value symbols from the last symbol of the first PDSCH transmission occasion. The offset value may be configured by radio resource control (RRC) signaling (StartingSymbolOffsetK), and if not configured, the default is 0. As shown in Figure 2, the offset value = 0.

[0010] Currently, the NR system supports scheduling of multiple PDSCHs via one DCI (PDCCH) (multi-PDSCH scheduling). However, the above multi-TRP repetition scheme is based on the fact that one DCI can schedule only one PDSCH, and does not take into account the case where one DCI schedules multiple PDSCHs. Furthermore, the multi-TRP repetition scheme and / or the HARQ feedback method for multi-PDSCH scheduling are not clarified.

[0011] In view of at least one of the above problems, embodiments of the present invention provide an information receiving method, a transmitting method, and a feedback method and apparatus. [Means for solving the problem]

[0012] One aspect of an embodiment of the present invention provides an information receiving device, which is applied to a terminal device, including: a first receiving unit that receives downlink control information (DCI) for scheduling PDSCHs transmitted by a network device, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information including a plurality of SLIVs; and a second receiving unit that receives one or more PDSCHs among the PDSCHs scheduled by the downlink control information.

[0013] Another aspect of an embodiment of the present invention provides an information feedback device applicable to a terminal device, the device including: a second determination unit that determines a set of candidate PDSCH reception occasions based on symbols corresponding to a first PDSCH transmission occasion and / or symbols corresponding to a second PDSCH transmission occasion and / or based on a first allocation table, the first allocation table being related to an offset value between the first PDSCH transmission occasion and the second PDSCH transmission occasion; and a second processing unit that generates and transmits an HARQ-ACK codebook, the HARQ-ACK codebook including HARQ-ACK information corresponding to the set of candidate PDSCH reception occasions.

[0014] Another aspect of an embodiment of the present invention provides an information transmission device, which is applied to a network device, including: a first transmission unit that transmits downlink control information for scheduling PDSCHs to a terminal device, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information including a plurality of SLIVs; and a second transmission unit that transmits one or more PDSCHs among the PDSCHs scheduled by the downlink control information.

[0015] One of the advantageous effects of the embodiments of the present invention is as follows: Even if one DCI supports scheduling multiple PDSCHs, a multi-TRP repetition scheme can be supported, so that the number of times a terminal device monitors a PDCCH can be reduced, thereby reducing the complexity and power consumption of the terminal device monitoring the PDCCH, and also reducing the resource overhead for transmitting downlink control signaling (DCI), thereby improving data throughput.

[0016] One of the advantageous effects of the embodiments of the present invention is that HARQ feedback (i.e., feedback of HARQ-ACK information) in the case of multi-TRP repetition scheme and / or multi-PDSCH scheduling can be supported, which can reduce the PDCCH monitoring burden on the UE and reduce power loss and UE complexity.

[0017] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail to illustrate ways in which the principles of the present invention can be employed. However, the scope of the present invention is not limited to these embodiments. The present invention encompasses all modifications, alterations, and equivalents within the spirit and scope of the appended claims.

[0018] Features described and / or shown in one embodiment may be used in the same or similar manner in one or more other embodiments, may be combined with features in other embodiments, or may be substituted for features in other embodiments.

[0019] It should be noted that in this text, the term "comprise / have" means the presence of a feature, element, step or component, and does not exclude the presence or addition of one or more other features, elements, steps or components. [Brief explanation of the drawings]

[0020] Elements and features depicted in one drawing and one embodiment of an example of the invention may be combined with elements and features shown in one or more drawings or embodiments, and in the drawings, like reference numerals may indicate corresponding elements in multiple drawings and may indicate corresponding elements used in more than one embodiment. [Figure 1] 1 is a schematic diagram of a multi-TRP scenario. [Figure 2] 1 is a schematic diagram of two PDSCH transmission occasions. [Figure 3] 1 is a schematic diagram of a communication system according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram of an example of an information receiving method according to an embodiment of the present invention; [Figure 5] 2 is a schematic diagram of a PDSCH transmission occasion according to an embodiment of the present invention; [Figure 6A] 2 is a schematic diagram of a PDSCH transmission occasion according to an embodiment of the present invention; [Figure 6B] 2 is a schematic diagram of a PDSCH transmission occasion according to an embodiment of the present invention; [Figure 7A] 2 is a schematic diagram of a PDSCH transmission occasion according to an embodiment of the present invention; [Figure 7B] 2 is a schematic diagram of a PDSCH transmission occasion according to an embodiment of the present invention; [Figure 8A] 2 is a schematic diagram of a PDSCH transmission occasion according to an embodiment of the present invention; [Figure 8B] 2 is a schematic diagram of a PDSCH transmission occasion according to an embodiment of the present invention; [Figure 9] 1 is a schematic diagram of an example of an information transmission method according to an embodiment of the present invention; [Figure 10] 1 is a schematic diagram of an example of an information feedback method according to an embodiment of the present invention; [Figure 11] 1 is a schematic diagram of an example of an information receiving device according to an embodiment of the present invention; [Figure 12] 1 is a schematic diagram of an example of an information transmission device according to an embodiment of the present invention. [Figure 13]1 is a schematic diagram of an example of an information feedback device according to an embodiment of the present invention; [Figure 14] 1 is a schematic diagram of a network device according to an embodiment of the present invention; [Figure 15] FIG. 1 is a schematic diagram of a terminal device according to an embodiment of the present invention. [Figure 16A] FIG. 10 is a schematic diagram of candidate PDSCH reception occasions when time domain bundling is configured; [Figure 16B] FIG. 10 is a schematic diagram of candidate PDSCH reception occasions when time domain bundling is not configured; DETAILED DESCRIPTION OF THE INVENTION

[0021] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some of the embodiments in which the principles of the present invention can be adopted are shown. However, the present invention is not limited to the described embodiments. The present invention includes all modifications, variations, and equivalents within the scope of the appended claims. Below, various embodiments of the present invention will be described with reference to the drawings. These embodiments are merely illustrative and do not limit the present invention.

[0022] In embodiments of the present invention, the terms "first," "second," etc. are used in titles to distinguish between different elements, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited to these terms. The term "and / or" includes any and all combinations of one or more of the terms listed in the associated list. The terms "comprise," "include," "have," etc. refer to the presence of listed features, elements, elements, or components, but do not exclude the presence or addition of one or more other features, elements, elements, or components.

[0023] In the embodiments of the present invention, the singular forms "one," "the," etc., include the plural and should be understood broadly as "one kind" or "one class," and are not limited to "one." Furthermore, the term "said" should be understood to include both the singular and the plural, unless the context clearly indicates otherwise. Furthermore, the term "described in" should be understood to mean "described at least in part," and the term "based on" should be understood to mean "based at least in part," unless the context clearly indicates otherwise.

[0024] In embodiments of the present invention, the terms "communication network" or "wireless communication network" may refer to a network conforming to any communication standard, such as, for example, Long Term Evolution (LTE), Long Term Evolution Advanced (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0025] Additionally, communications between devices in a communications system may occur according to any stage of communications protocol, including, but not limited to, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), and / or other currently known or future developed communications protocols.

[0026] In an embodiment of the present invention, the term "network device" refers to a device in a communication system that allows a terminal device to access the communication system and provides a service to the terminal device, and may include, but is not limited to, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobility management entity (MME), a gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0027] Here, 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., as well as a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low-power node (e.g., femto, pico, etc.). Also, the term "base station" may include some or all of these functions, and each base station may provide communication coverage for a particular geographic area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0028] In the 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 network services via, for example, a network device. The terminal device 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.

[0029] Here, the terminal device may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a wireless modulation / demodulation device, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smart watch, a digital camera, etc.

[0030] Furthermore, for example, in a scenario such as the Internet of Things (IoT), the user device may be a monitoring or measurement device or apparatus, including, but not limited to, a Machine Type Communication (MTC) terminal, an in-vehicle communication terminal, an industrial wireless device, a surveillance camera, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc.

[0031] Furthermore, the term "network side" or "network device side" refers to the side of a network, which may be a base station or may include one or more of the network devices described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of a user or terminal, which may be a UE or may include one or more of the terminal devices described above. In this specification, unless otherwise specified, "device" may refer to either a network device or a terminal device.

[0032] In an embodiment of the present invention, a time unit may be a subframe, a slot, or a set including at least one time domain symbol. A set of at least one time domain symbol may be referred to as a mini-slot or a non-slot. For example, a subframe and a slot according to an embodiment of the present invention may be interchangeable, and a "slot" may be interchangeable with a "subframe." The present invention is not limited thereto, and for convenience of explanation, a "slot" will be used hereinafter as an example, but may be interchangeable with other time units. Furthermore, the terms "time domain resource" and "resource" may be interchangeable.

[0033] In the following description, unless confusion arises, the terms "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" may be interchanged, and the terms "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" may be interchanged.

[0034] The terms "downlink control signal" and "Downlink Control Information (DCI)" or "Physical Downlink Control Channel (PDCCH)" may be interchanged, and the terms "downlink data signal" and "downlink data information" or "Physical Downlink Shared Channel (PDSCH)" may be interchanged.

[0035] Furthermore, transmitting or receiving a PUSCH may be understood as transmitting or receiving uplink data carried by the PUSCH, transmitting or receiving a PUCCH may be understood as transmitting or receiving uplink information (e.g., UCI) carried by the PUCCH, transmitting or receiving a PRACH may be understood as transmitting or receiving a preamble carried by the PRACH, transmitting or receiving a PDSCH may be understood as transmitting or receiving downlink data carried by the PDSCH, and transmitting or receiving a PDCCH may be understood as transmitting or receiving downlink information (e.g., DCI) carried by the PDCCH.

[0036] In an embodiment of the present invention, the higher layer signaling may be, for example, Radio Resource Control (RRC) signaling, which may be referred to as an RRC message, including, for example, a Master Information Block (MIB), system information, or a dedicated RRC message, or may be referred to as an RRC information element (RRC IE). The higher layer signaling may also be, for example, Medium Access Control (MAC) signaling, which may be referred to as a MAC control element (MAC CE). However, the present invention is not limited thereto.

[0037] The following describes an example scenario of the present invention with reference to an example, but the present invention is not limited thereto.

[0038] 3 is a schematic diagram of a communication system according to an embodiment of the present invention, and schematically illustrates examples of terminal devices and network devices. As shown in FIG. 3, a communication system 100 may include a network device 101 and terminal devices 102 and 103. For convenience of explanation, FIG. 3 illustrates an example in which two terminal devices and one network device are included, but the embodiment of the present invention is not limited thereto.

[0039] In an embodiment of the present invention, existing services or future services can be performed between the network device 101 and the terminal devices 102 and 103. For example, 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).

[0040] 3 shows that both of the two terminal devices 102 and 103 are located within the coverage area 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 area of ​​the network device 101, or one terminal device 102 may be located within the coverage area of ​​the network device 101 and the other terminal device 103 may be located outside the coverage area of ​​the network device 101.

[0041] In an embodiment of the present invention, the transport blocks carried by different PDSCHs may be the same or different. Therefore, hereinafter, "multiple PDSCHs (more than one PDSCH)" or "at least two PDSCHs" refers to different PDSCHs carrying different transport blocks. More specifically, the transport blocks carried by different PDSCHs may correspond to the same or different HARQ processes, where different HARQ processes are identified by different HARQ process identifiers.

[0042] In some embodiments, a PDSCH time domain resource allocation (TDRA) table (also referred to as a TDRA table) includes at least one row. Hereinafter, for convenience of explanation, one row is referred to as one PDSCH TDRA configuration (also referred to as a TDRA configuration), i.e., the PDSCH TDRA table includes at least one PDSCH TDRA configuration. One PDSCH TDRA configuration includes at least one PDSCH time domain resource configuration (also referred to as a time domain resource configuration), and the PDSCH time domain resource configuration includes at least a symbol position in a slot (start symbol + length) configuration. Furthermore, one PDSCH TDRA configuration may further include at least one slot offset K0 configuration, where K0 represents a slot offset between the PDSCH and the PDCCH. The K0 configuration may be included in the PDSCH time domain resource configuration or may not be included in the PDSCH time domain resource configuration. The PDSCH TDRA configuration may further include other information, which may or may not be included in the PDSCH time domain resource configuration. The embodiments of the present invention are not limited thereto. Here, the symbol position configuration in a slot may include, for example, 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 correspond to, for example, a starting symbol configuration and a length configuration, where the starting symbol configuration and the length configuration are a valid combination.

[0043] The following describes a method for supporting a multi-TRP repetition transmission scheme when supporting multi-PDSCH scheduling with reference to Examples 1 and 2. With reference to Example 3, a HARQ feedback method for a multi-TRP repetition scheme and / or multi-PDSCH scheduling is described.

[0044] Example 1 The embodiment of the present invention provides an information receiving method, which will be explained from the terminal device side.

[0045] 4 is a schematic diagram of an example of an information receiving method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:

[0046] Step 401: A terminal device receives downlink control information for scheduling a PDSCH sent by a network device, the downlink control information indicating a first number of TCI states, where the first number is an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information include a plurality of SLIVs.

[0047] Step 402: The terminal device receives one or more PDSCHs among the PDSCHs scheduled by the downlink control information.

[0048] In some embodiments, the network device may pre-configure a set of associations of channel conditions through higher layer signaling, with each association being identified by one TCI state. Up to 128 groups of TCI states may be configured for the PDSCH channel, and up to 64 groups of TCI states may be configured for the PDCCH channel. Each TCI state includes parameters configuring an approximate positional relationship between a DMRS antenna port in the PDSCH / PDCCH and a downlink reference signal (DL RS), which may be a CSI-RS or an SSB. The terminal device dynamically evaluates the PDCCH / PDSCH channel transmission conditions based on the TCI states.

[0049] In some embodiments, the DCI received in step 401 is DCI format 1_1.

[0050] In some embodiments, the DCI received in step 401 may include a TCI field. The TCI field may include an index value that may correspond to a first number of TCI states in a predetermined TCI state table, the first number being an integer greater than one.

[0051] In some embodiments, the DCI may include a first information field. The first information field may be a time domain resource assignment field. The first information field indicates a PDSCH time domain resource by indicating an index (row index, e.g., the value of the row index is 1 or greater) corresponding to a PDSCH TDRA configuration in a (corresponding) PDSCH TDRA table applied to the DCI. In other words, the DCI schedules a PDSCH by indicating a PDSCH TDRA configuration in a PDSCH TDRA table applied to the DCI, hereinafter referred to as a DCI-scheduled PDSCH, i.e., a PDSCH indicated by the DCI. For example, a value m (assuming m is an integer greater than or equal to 0) in the first information field of the DCI corresponds to a PDSCH TDRA configuration whose index is m+1 (i.e., the m+1-th row) in the PDSCH TDRA table applied to the DCI.

[0052] In some embodiments, a PDSCH TDRA table may be predefined or configured by higher layer signaling, and the table supports scheduling multiple PDSCHs via one DCI, i.e., one or more rows in the table include multiple time domain resource configurations (SLIVs), e.g., supporting scheduling multiple PDSCHs via one DCI, where a DCI applying the table may indicate / schedule one PDSCH (e.g., the row in the TDRA table indicated by the first information field in the DCI includes only one SLIV) or multiple PDSCHs (e.g., the row in the TDRA table indicated by the first information field in the DCI includes multiple SLIVs).

[0053] In some embodiments, to support scheduling of multiple PDSCHs via one DCI (mutli-PDSCH scheduling), RRC signaling (e.g., pdsch-TimeDomainAllocationListForMultiPDSCH or pdsch-TimeDomainAllocationListForMultiPDSCH-r17) may support configuring a TDRA table for supporting scheduling of multiple (i.e., more than one) PDSCHs via one DCI. The TDRA table includes at least one time domain resource allocation configuration for scheduling multiple (more than one) PDSCHs / PUSCHs, and the time domain resource allocation configuration includes, for example, multiple SLIVs, each corresponding to one PDSCH / PUSCH.

[0054] In some embodiments, when the above TDRA table is configured, the TDRA table applies / corresponds to DCI format 1_1.

[0055] In some embodiments, the terminal device determines a first number of PDSCH transmission occasions for each PDSCH among the PDSCHs scheduled by the downlink control information. Each PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. The terminal device receives or does not receive the PDSCH at each PDSCH transmission occasion. The following exemplarily describes a method for determining the first number of PDSCH transmission occasions and whether to receive or not receive the PDSCH at each PDSCH transmission occasion.

[0056] In some embodiments, the DCI indicates / schedules multiple PDSCHs, each PDSCH of the multiple PDSCHs corresponding to a first number of PDSCH transmission occasions, where the first number of PDSCH transmission occasions corresponding to one PDSCH carry the same transport block and correspond to a first number of TCI states, respectively. The number of symbols of each PDSCH transmission occasion of the first number of PDSCH transmission occasions is the same. The first PDSCH transmission occasion of the first number of PDSCH transmission occasions is determined based on a time domain resource configuration (e.g., SLIV) corresponding to the one PDSCH indicated / scheduled by the DCI, and the first symbol of the next PDSCH transmission occasion is determined based on an offset value relative to the last symbol of the first PDSCH transmission occasion. Specifically, the first symbol starts the offset value symbols after the last symbol of the first PDSCH transmission occasion. The offset value may be configured by radio resource control (RRC) signaling (StartingSymbolOffsetK), and defaults to 0 if not configured.

[0057] Figure 5 is a schematic diagram of PDSCH transmission occasions. As shown in Figure 5, taking the first number equal to 2 as an example, the DCI indicates two TCI states and indicates / schedules two PDSCHs (indicated by arrows in Figure 4), and each PDSCH corresponds to two PDSCH transmission occasions. The two PDSCH transmission occasions correspond to the two indicated TCI states, i.e., TRP1 and TRP2, respectively. The number of symbols of the second PDSCH transmission occasion is the same as the number of symbols of the first PDSCH transmission occasion, and its first symbol is determined based on an offset value from the last symbol of the first PDSCH transmission occasion. Specifically, the first symbol starts the offset value symbols after the last symbol of the first PDSCH transmission occasion. The offset value is 1.

[0058] In some embodiments, in step 402, the terminal device determines whether to receive each PDSCH among the multiple PDSCHs indicated / scheduled by the DCI. The terminal device may determine whether to receive a PDSCH at each PDSCH transmission occasion (in other words, whether to receive the corresponding PDSCH transmission occasion) based on whether each PDSCH transmission occasion collides with a semi-statically configured uplink symbol. A collision between a PDSCH transmission occasion and a semi-statically configured uplink symbol means that at least one of the symbols corresponding to the PDSCH transmission occasion overlaps with a semi-statically configured uplink symbol, in other words, that at least one of the symbols corresponding to the PDSCH transmission occasion is semi-statically configured as an uplink symbol. A PDSCH transmission occasion not colliding with a semi-statically configured uplink symbol means that none of the symbols corresponding to the PDSCH transmission occasion overlaps with a semi-statically configured uplink symbol, in other words, none of the symbols corresponding to the PDSCH transmission occasion is semi-statically configured as an uplink symbol.

[0059] In some embodiments, as an example 1, if there is a PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for a PDSCH, the terminal device does not receive the PDSCH, and if there is no PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for a PDSCH, the terminal device receives the PDSCH. If any of the PDSCH transmission occasions corresponding to a PDSCH collides with a semi-statically configured uplink symbol, the terminal device does not receive the PDSCH (in other words, does not receive any of the first several PDSCH transmission occasions corresponding to the PDSCH, or in other words, does not receive the first several PDSCH transmission occasions). Conversely, if none of the PDSCH transmission occasions corresponding to a PDSCH collides with a semi-statically configured uplink symbol, the terminal device receives the PDSCH (in other words, receives the PDSCH in the first several PDSCH transmission occasions corresponding to the PDSCH).

[0060] 6A and 6B are schematic diagrams of PDSCH transmission occasions. As shown in Figures 6A and 6B, if one (the second) of two PDSCH transmission occasions corresponding to a first PDSCH indicated / scheduled by DCI collides with a semi-statically configured uplink symbol, the first PDSCH is not received (in other words, not received at any of the two PDSCH transmission occasions corresponding to the first PDSCH). If neither PDSCH transmission occasion corresponding to a second PDSCH indicated / scheduled by DCI collides with a semi-statically configured uplink symbol, the PDSCH is received (in other words, the PDSCH is received at the two PDSCH transmission occasions corresponding to the second PDSCH).

[0061] In some embodiments, as an example 2, if there is a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for a PDSCH, the terminal device receives the PDSCH, for example, the terminal device receives the PDSCH at a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol. If there is no PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for a PDSCH, the terminal device does not receive the PDSCH. If any of the PDSCH transmission occasions corresponding to a PDSCH do not collide with a semi-statically configured uplink symbol, the terminal device receives the PDSCH (in other words, the PDSCH is received at a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol corresponding to the PDSCH, or a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol). Conversely, if any of the PDSCH transmission occasions corresponding to the PDSCH collide with a semi-statically configured uplink symbol, the PDSCH is not received (in other words, the first few PDSCH transmission occasions corresponding to the PDSCH are not all received, or in other words, the first few PDSCH transmission occasions are not received).

[0062] 7A and 7B are schematic diagrams of PDSCH transmission occasions. As shown in Figures 7A and 7B, if one (the second) of two PDSCH transmission occasions corresponding to a first PDSCH indicated / scheduled by DCI collides with a semi-statically configured uplink symbol, the first PDSCH is received (in other words, the first PDSCH is received at the first PDSCH transmission occasion corresponding to the first PDSCH, but not at the second PDSCH transmission occasion). If one (the first) of two PDSCH transmission occasions corresponding to a first PDSCH indicated / scheduled by DCI collides with a semi-statically configured uplink symbol, the first PDSCH is received (in other words, the second PDSCH transmission occasion corresponding to the first PDSCH, but not at the first PDSCH transmission occasion).

[0063] In some embodiments, as an example 3, if the first PDSCH transmission occasion of a PDSCH does not collide with a semi-statically configured uplink symbol, the terminal device receives the PDSCH, and if the first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the terminal device does not receive the PDSCH. If the first PDSCH transmission occasion corresponding to a PDSCH (in other words, the PDSCH time domain resource configuration (SLIV) indicated by the DCI) does not collide with a semi-statically configured uplink symbol, the terminal device may receive the PDSCH regardless of whether other subsequent PDSCH transmission occasions collide with semi-statically configured uplink symbols (in other words, receive the PDSCH at the first PDSCH transmission occasion, or receive a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol). Conversely, if the first PDSCH transmission occasion corresponding to the PDSCH collides with a semi-statically configured uplink symbol, the PDSCH is not received (in other words, not received at all in the first few PDSCH transmission occasions corresponding to the PDSCH, in other words, not received in the first few PDSCH transmission occasions).

[0064] 8A and 8B are schematic diagrams of PDSCH transmission occasions. As shown in FIG. 8A, if the first of two PDSCH transmission occasions corresponding to the first PDSCH indicated / scheduled by DCI collides with a semi-statically configured uplink symbol, the first PDSCH is not received (in other words, not received at all of the two PDSCH transmission occasions corresponding to the first PDSCH, or in other words, not received at the two PDSCH transmission occasions). As shown in FIG. 8B, if the first of two PDSCH transmission occasions corresponding to the first PDSCH indicated / scheduled by DCI does not collides with a semi-statically configured uplink symbol, the first PDSCH is received (in other words, received at the first PDSCH transmission occasion corresponding to the first PDSCH, but not received at the second PDSCH transmission occasion).

[0065] In some embodiments, the DCI may further include a second information field, and the second information field (e.g., "HARQ process number") is used to indicate a HARQ process identifier. For each PDSCH among multiple PDSCHs indicated / scheduled by the DCI, all PDSCHs may have corresponding HARQ processes, or only some of the PDSCHs may have corresponding HARQ processes. The method may further include, as step S1, a step in which the terminal device determines a HARQ process identifier for the PDSCH scheduled by the DCI. The terminal device may determine whether to assign a HARQ process identifier (HARQ process ID) for each PDSCH based on whether each PDSCH transmission occasion collides with a semi-statically configured uplink symbol. In the following, "process" and "process ID" may be interchangeable. Note that the method may not include step 202 and may include only step 201 and step S1, but embodiments of the present invention are not limited thereto.

[0066] In some embodiments, if there is a PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID, and if there is no PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID. If any of the PDSCH transmission occasions corresponding to a PDSCH collides with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process identifier, in other words, the terminal device skips the PDSCH when determining the HARQ process identifier, in other words, does not assign a HARQ process identifier to the PDSCH. Otherwise, the PDSCH has a corresponding HARQ process identifier, in other words, the terminal device does not skip the PDSCH when determining the HARQ process identifier, in other words, assigns a HARQ process identifier to the PDSCH. The HARQ process identifier corresponding to the PDSCH may be determined based on the HARQ process identifier indicated by the DCI. For details, please refer to the prior art, and the description thereof will be omitted here. This method may also be implemented in combination with the above Example 1, for example, as shown in Figures 6A and 6B, where the first PDSCH does not have a corresponding HARQ process identifier and the second PDSCH has a corresponding HARQ process identifier.

[0067] In some embodiments, if there is a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID, and if there is no PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID. If any of the PDSCH transmission occasions corresponding to a PDSCH do not collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process identifier. In other words, the terminal device does not skip the PDSCH when determining the HARQ process identifier, or in other words, assigns a HARQ process identifier to the PDSCH. The HARQ process identifier corresponding to the PDSCH may be determined based on the HARQ process identifier indicated by the DCI. Details may be found in the prior art, and description thereof will be omitted here. Otherwise, the PDSCH does not have a corresponding HARQ process identifier, in other words, the terminal device skips the PDSCH when determining a HARQ process identifier, in other words, does not assign a HARQ process identifier to the PDSCH. This method may be implemented in combination with Example 1, Example 2, or Example 3 above. For example, as shown in Figure 8A, the first PDSCH does not have a corresponding HARQ process identifier, and as shown in Figures 7A, 7B, and 8B, the first PDSCH has a corresponding HARQ process identifier.

[0068] In some embodiments, if the first PDSCH transmission occasion of a PDSCH does not collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process ID, and if the first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID. If the first PDSCH transmission occasion corresponding to a PDSCH (in other words, the time domain resource configuration (SLIV) of the PDSCH indicated by the DCI) does not collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process ID regardless of whether subsequent PDSCH transmission occasions collide with semi-statically configured uplink symbols. In other words, the terminal device does not skip the PDSCH when determining the HARQ process identifier, or in other words, assigns a HARQ process identifier to the PDSCH. The HARQ process identifier corresponding to the PDSCH may be determined based on the HARQ process identifier indicated by the DCI. For details, please refer to the prior art, and the description thereof will be omitted here. Otherwise, the PDSCH does not have a corresponding HARQ process identifier, in other words, the terminal device skips the PDSCH when determining a HARQ process identifier, in other words, does not assign a HARQ process identifier to the PDSCH. This method may be implemented in combination with the above Example 1 or Example 3, for example, as shown in Figure 8A, the first PDSCH does not have a corresponding HARQ process identifier, and as shown in Figure 8B, the first PDSCH has a corresponding HARQ process identifier.

[0069] In some embodiments, the DCI indicates / schedules only one PDSCH. A table applied to the DCI supports scheduling multiple PDSCHs via one DCI (one or more rows of the table include multiple SLIVs). For example, although scheduling multiple PDSCHs via one DCI is supported, only one PDSCH is indicated / scheduled when the DCI applies the table (e.g., the row of the TDRA table indicated by the first information field in the DCI includes only one SLIV). In other words, even though a DCI format corresponding to the DCI can indicate / schedule multiple PDSCHs, the DCI indicates / schedules only one PDSCH, and the one PDSCH corresponds to two PDSCH transmission occasions. The terminal device receives the PDSCH at the first number of PDSCH transmission occasions, or the terminal device receives the PDSCH at one or more PDSCH transmission occasions of the first number of PDSCH transmission occasions depending on whether they collide with semi-statically configured uplink symbols. In other words, the terminal device can receive two PDSCH transmission occasions, or one or more PDSCH transmission occasions depending on whether they collide with semi-statically configured uplink symbols. For example, the terminal device receives a PDSCH transmission occasion that does not collide with semi-statically configured uplink symbols.

[0070] In some embodiments, the terminal device determines the first number of PDSCH transmission occasions for valid PDSCHs among the PDSCHs scheduled by the downlink control information. Each valid PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. The terminal device does not determine the first number of PDSCH transmission occasions for invalid PDSCHs among the PDSCHs scheduled by the downlink control information. The terminal device either receives or does not receive a PDSCH at each PDSCH transmission occasion. In other words, only valid PDSCHs have corresponding PDSCH transmission occasions, and invalid PDSCHs do not have corresponding PDSCH transmission occasions. Here, similarly applying Example 3 above, assuming that the first PDSCH is determined to be valid, the first PDSCH corresponds to two PDSCH transmission occasions, and the terminal device receives the first PDSCH at the first PDSCH transmission occasion corresponding to the first PDSCH, and does not receive the first PDSCH at the second PDSCH transmission occasion corresponding to the first PDSCH.

[0071] In some embodiments, the DCI indicates / schedules only one valid PDSCH, and the valid PDSCH is a PDSCH whose corresponding time domain resource configuration (e.g., SLIV) does not conflict with an uplink symbol whose time domain resource configuration (e.g., SLIV) does not collide with a semi-statically configured PDSCH. The DCI can schedule one or more PDSCHs, but only one of them is valid. For example, a table applied to the DCI supports scheduling multiple PDSCHs via one DCI (one or more rows of the table include multiple SLIVs). For example, although scheduling multiple PDSCHs via one DCI is supported, only one PDSCH is indicated / scheduled when the DCI applies the table (e.g., the row of the TDRA table indicated by the first information field in the DCI includes only one SLIV), and the one PDSCH is the valid PDSCH. Alternatively, multiple PDSCHs are indicated / scheduled when the DCI applies the table, and only one valid PDSCH is included among the multiple PDSCHs. In other words, even if the DCI format corresponding to the DCI can indicate / schedule multiple PDSCHs, the DCI indicates / schedules only one valid PDSCH.

[0072] In some embodiments, the valid PDSCH corresponds to two PDSCH transmission occasions. In other words, the terminal device determines whether to apply the multi-TRP repeat transmission scheme "tdmSchemeA" based on the number of valid PDSCHs indicated / scheduled in the DCI. If the number of valid PDSCHs is one, the terminal device applies the multi-TRP repeat transmission scheme "tdmSchemeA." The terminal device receives the valid PDSCH at the first number of PDSCH transmission occasions, or the terminal device receives the valid PDSCH at one or more PDSCH transmission occasions of the first number of PDSCH transmission occasions depending on whether they collide with semi-statically configured uplink symbols, for example, at a PDSCH transmission occasion that does not collide with semi-statically configured uplink symbols. In other words, the terminal device may receive two PDSCH transmission occasions, or may receive one or more PDSCH transmission occasions depending on whether they collide with semi-statically configured uplink symbols. For example, receiving PDSCH transmission occasions that do not collide with semi-statically configured uplink symbols.

[0073] In some embodiments, the first number of PDSCH transmission occasions includes a first PDSCH transmission occasion and a second PDSCH transmission occasion. The method may further include the following steps (not shown): The terminal device determines a set of candidate PDSCH reception occasions based on symbols corresponding to the first PDSCH transmission occasion and / or symbols corresponding to the second PDSCH transmission occasion, and / or based on a first allocation table. The first allocation table is associated with an offset value between the first PDSCH transmission occasion and the second PDSCH transmission occasion. The terminal device generates and transmits a HARQ-ACK codebook. The codebook includes HARQ-ACK information corresponding to the set of candidate PDSCH reception occasions. In other words, the terminal device generates and transmits HARQ feedback information for PDSCHs received or not received in step 402 to a network device. The method for generating and transmitting the feedback information will be described in Example 3, and the description thereof will be omitted here. In other words, Example 1 and Example 3 may be implemented independently or in combination, and the embodiments of the present invention are not limited thereto.

[0074] According to this embodiment, even if one DCI supports scheduling multiple PDSCHs, a multi-TRP repetition scheme can be supported, thereby reducing the number of times a terminal device monitors a PDCCH, thereby reducing the complexity and power consumption of the terminal device's PDCCH monitoring, and also reducing the resource overhead for transmitting downlink control signaling (DCI), thereby improving data throughput.

[0075] <Example 2> The embodiment of the present invention provides an information transmission method, which is explained from the network device side.

[0076] 9 is a schematic diagram of an example of an information transmission method according to an embodiment of the present invention. As shown in FIG. 9, the method includes the following steps:

[0077] Step 901: A network device sends downlink control information for scheduling a PDSCH to a terminal device, the downlink control information indicating a first number of TCI states, where the first number is an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information include a plurality of SLIVs.

[0078] Step 902: The network device transmits one or more PDSCHs among the PDSCHs scheduled by the downlink control information.

[0079] In some aspects, steps 901 and 902 correspond to steps 401 and 402 in the first embodiment, and a description of the overlapping content will be omitted.

[0080] According to this embodiment, even if one DCI supports scheduling multiple PDSCHs, a multi-TRP repetition scheme can be supported, thereby reducing the number of times a terminal device monitors a PDCCH, thereby reducing the complexity and power consumption of the terminal device's PDCCH monitoring, and also reducing the resource overhead for transmitting downlink control signaling (DCI), thereby improving data throughput.

[0081] Example 3 The embodiment of the present invention provides an information feedback method, which is explained from the terminal device side.

[0082] 10 is a schematic diagram of an example of an information feedback method according to an embodiment of the present invention. As shown in FIG. 10, the method includes the following steps:

[0083] Step 1001: The terminal device determines a set of candidate PDSCH reception occasions based on a symbol corresponding to a first PDSCH transmission occasion and / or a symbol corresponding to a second PDSCH transmission occasion, and / or based on a first allocation table, the first allocation table being associated with an offset value between the first PDSCH transmission occasion and the second PDSCH transmission occasion.

[0084] Step 1002: The terminal device generates and sends a HARQ-ACK codebook, where the HARQ-ACK codebook includes HARQ-ACK information corresponding to the candidate PDSCH receiving occasion set.

[0085] In some embodiments, the terminal device needs to perform HARQ-ACK feedback for a received PDSCH (e.g., a PDSCH scheduled by a DCI or a PDSCH for an SPS) or DCI (e.g., a DCI for deactivating an SPS). The HARQ-ACK feedback information may be conveyed via a HARQ-ACK codebook (e.g., a Type-1 HARQ-ACK codebook or a semi-static HARQ-ACK codebook), and the codebook may include HARQ-ACK information bits of one or more serving cells. The following only describes a method for determining the HARQ-ACK information bits of a serving cell. When the codebook includes HARQ-ACK information bits of multiple serving cells, the method for determining the HARQ-ACK information bits of each serving cell is the same as the above-mentioned method for determining the HARQ-ACK information bits of one serving cell, and the HARQ-ACK information bits of multiple serving cells are arranged in a certain order in the codebook, which will not be described here. Hereinafter, "HARQ-ACK", "HARQ feedback", and "HARQ-ACK feedback" may be interchangeable.

[0086] In some embodiments, the codebook includes HARQ-ACK information bits corresponding to a second number (A) of candidate PDSCH reception occasions, where the second number is a natural number, where the second number (A) of candidate PDSCH reception occasions correspond to the same serving cell (i.e., the serving cell), i.e., the second number (A) of candidate PDSCH reception occasions are included in a candidate PDSCH reception occasion set M of the serving cell. A,c In the prior art, since only one PDSCH scheduling by one DCI is supported, each PDSCH TDRA configuration includes only one PDSCH time domain resource configuration, and further, when determining the candidate PDSCH reception occasion set, only the case where each PDSCH TDRA configuration includes only one PDSCH time domain resource configuration (i.e., the configuration of the symbol position (start symbol + length) in the slot, e.g., SLIV) is considered. In addition, the prior art does not consider the repeated transmission scheme of the same TB in a multi-TRP scenario (e.g., "tdmSchemeA"). In the present invention, to support scheduling of multiple PDSCHs using one DCI and / or a repeat transmission scheme of the same TB in a multi-TRP scenario (e.g., "tdmSchemeA"), when determining a set of candidate PDSCH reception occasions, the symbols corresponding to the first PDSCH transmission occasion and / or the symbols corresponding to the second PDSCH transmission occasion are considered, and / or the candidate PDSCH reception occasion set is determined based on a first allocation table related to an offset value between the first and second PDSCH transmission occasions. By considering the above factors, it is possible to support HARQ information feedback in the case of scheduling of multiple PDSCHs using one DCI and / or a repeat transmission scheme of the same TB in a multi-TRP scenario (e.g., "tdmSchemeA"), thereby reducing the burden of PDCCH monitoring on the UE and reducing power loss and UE complexity. Each of these will be described below.

[0087] In some embodiments, before determining the candidate PDSCH reception occasion, the terminal device needs to determine the HARQ-ACK information feedback timing (in other words, the terminal needs to determine the slot (uplink slot) for transmitting the HARQ-ACK information).

[0088] In some embodiments, the method may further include the following steps (not shown): A terminal device receives DCI; and determines a slot in which HARQ-ACK information needs to be transmitted based on a third information field (PDSCH-to-HARQ_feedback timing indicator field) in the DCI for indicating HARQ-ACK information feedback timing. For example, the DCI may be the DCI in step 401 of embodiment 1, where the DCI indicates a first number of TCI states and schedules at least one PDSCH, where the first number is an integer greater than 1. Each PDSCH of the at least one PDSCH corresponds to the first number of PDSCH transmission occasions. An aspect of the DCI may refer to embodiment 1, and description thereof will be omitted here.

[0089] In some embodiments, HARQ-ACK information (i.e., HARQ-ACK codebook) is carried by PUCCH or PUSCH. The following describes HARQ-ACK feedback timing using an example in which HARQ-ACK information is carried by PUCCH. Note that, although the following PUCCH may be replaced with PUSCH, the present invention is not limited thereto.

[0090] In some embodiments, the DCI may include a fourth information field, which is a HARQ acknowledgement (HARQ-ACK) feedback timing indication (i.e., a PDSCH-to-HARQ_feedback timing indicator) field, and which indicates feedback timing k of HARQ acknowledgement (HARQ-ACK) information. Alternatively, the DCI may not include a fourth information field, and the terminal device may receive second configuration information (e.g., dl-DataToUL-ACK or dl-DataToUL-ACKForDCIFormat1_2 for DCI format 1_2) configured by higher layer signaling, and the second configuration information indicates feedback timing k of HARQ acknowledgement (HARQ-ACK) information. Alternatively, the terminal device receives second configuration information (e.g., dl-DataToUL-ACK or dl-DataToUL-ACKForDCIFormat1_2 HARQ-ACK_2) configured by higher layer signaling, and the second configuration information is used to configure feedback timing k of multiple HARQ acknowledgement (HARQ-ACK) information. The DCI may include a fourth information field, and the second information field indicates feedback timing k of one HARQ acknowledgement (HARQ-ACK) information from the multiple feedback timings configured by the second configuration information.

[0091] For example, HARQ-ACK information corresponding to one or more PDSCHs scheduled by the DCI may be fed back in the same PUCCH, or HARQ-ACK information corresponding to one or more PDSCHs scheduled by the DCI may be fed back in a PUCCH (in a different slot).

[0092] For example, HARQ-ACK information for multiple PDSCHs may be fed back in one PUCCH. μDL-μULTaking n=1 as an example, the terminal device transmits HARQ-ACK information in a slot with index n+k (slot n+k), where the slot with index n (slot n) is the end slot of the last PDSCH among multiple PDSCHs, and n and k are integers greater than 0, that is, the end slot of the last PDSCH is n, and k is the offset between the feedback slot of the HARQ-ACK information and slot n. The relationship between the downlink end slot n of the PDSCH and the index of the corresponding uplink slot may be determined based on the subcarrier spacing of the uplink and downlink. Details may refer to the prior art, and the description thereof will be omitted here.

[0093] In some embodiments, after determining the time domain position or slot where HARQ-ACK information needs to be fed back, the terminal device may determine candidate PDSCH reception occasions and generate a corresponding codebook. The following describes a method for determining candidate PDSCH reception occasions.

[0094] In some embodiments, to determine the set of candidate PDSCH reception occasions, it is necessary to determine downlink slots that may contain (or correspond to) candidate PDSCH reception occasions.

[0095] In some embodiments, the downlink slot is determined based on a slot timing value K1.

[0096] For example, the slot in which HARQ-ACK information needs to be transmitted, e.g., slot n u , based on a set of slot timing values ​​K1 associated with the activated uplink fractional bandwidth UL BWP, one or more downlink slots n corresponding to each K1 in the set of K1 D where K1 is the HARQ-ACK information feedback slot n Drepresents an offset value of the PDSCH relative to K1. When determining one or more downlink slots corresponding to each K1, preferably, the subcarrier spacing of the uplink and downlink partial bandwidths may be further taken into consideration, and one K1 may correspond to multiple downlink slots. For details, please refer to the prior art, and embodiments of the present invention are not limited thereto.

[0097] In some embodiments, the determination of the set of K1 associated with the activated uplink fractional bandwidth UL BWP may refer to the prior art, e.g., one downlink slot n d For each downlink slot, determine a PDSCH time domain resource configuration corresponding to the slot (downlink slot), and determine whether the slot has a corresponding candidate PDSCH receiving occasion, thereby determining a set of candidate PDSCH receiving occasions. Note that the determination of each downlink slot and the determination of the PDSCH time domain resource configuration corresponding to the slot may be performed sequentially or simultaneously, and the present invention is not limited thereto.

[0098] For example, in the prior art, when determining whether there is a corresponding candidate PDSCH reception occasion, only consider whether the PDSCH time domain resource configuration (e.g., SLIV configuration) collides with a semi-statically configured uplink symbol. The following description will be made with reference to Figures 16A and 16B.

[0099] As shown in Figure 16A, when time domain bundling is configured for the HARQ feedback codebook (e.g., enableTimeDomainHARQ-Bundling is conveyed via RRC signaling, and the HARQ feedback codebook enables time domain bundling), if a row in the TDRA table contains an SLIV that does not collide with the semi-static configuration, the row is reserved. In other words, if at least one row in the TDRA table contains an SLIV that does not collide with the semi-static configuration, the corresponding candidate PDSCH reception occasion is reserved. HARQ feedback slot n u Assume that the TDRA table has only two rows, row 0 and row 1, where row 0 includes two PDSCH time-domain resource configurations SLIV0_0 and SLIV0_1, row 1 includes three PDSCH time-domain resource configurations SLIV1_0, SLIV1_1, and SLIV1_2, and the K1 set includes {1, 2}. Here, all symbols in slots Slot n-2,n are uplink symbols (semi-static configuration), some symbols in slot Slot n-1 are uplink symbols and some symbols are downlink (DL) symbols, and all symbols in the remaining slots are downlink (DL) symbols. Therefore, for K1=1, SLIV0_1 and SLIV1_0 are valid PDSCHs, and for K1=2, SLIV0_0, SLIV1_0, and SLIV1_1 are valid PDSCHs, in which case there is a candidate PDSCH reception occasion 1 corresponding to K1=1 and a candidate PDSCH reception occasion 0 corresponding to K1=2, respectively.

[0100] As shown in FIG. 16B, if time domain bundling is not configured for the HARQ feedback codebook, HARQ feedback slot n uAssume that the TDRA table has only two rows, row 0 and row 1, where row 0 includes two PDSCH time-domain resource configurations SLIV0_0 and SLIV0_1, row 1 includes three PDSCH time-domain resource configurations SLIV1_0, SLIV1_1, and SLIV1_2, and the set K1 includes {1, 2} and may further include {3, 4} by extending the prior art. Here, all symbols in slots Slot n-2,n are uplink symbols (semi-static configuration), some symbols in slot Slot n-1 are uplink symbols and some symbols are downlink (DL) symbols, and all symbols in the remaining slots are downlink (DL) symbols. Therefore, for K1=1 (slot n-1), SLIV0_1 is a valid PDSCH, for K1=2 (slot n-2), there is no valid PDSCH, for K1'=3 (slot n-3), SLIV0_0 and SLIV1_1 are valid PDSCHs, and for K1'=4 (slot n-4), SLIV0_1 is a valid PDSCH. In this case, there is a candidate PDSCH reception occasion 2 corresponding to K1=1, a candidate PDSCH reception occasion 1 corresponding to K1'=3, and a candidate PDSCH reception occasion 0 corresponding to K1'=4.

[0101] Unlike the prior art, the present invention may further consider symbols corresponding to the first PDSCH transmission occasion and / or symbols corresponding to the second PDSCH transmission occasion and / or may perform processing based on a first allocation table relating to an offset value between the first and second PDSCH transmission occasions.

[0102] In some embodiments, the first PDSCH transmission occasion and the second PDSCH transmission occasion correspond to the same PDSCH among at least one PDSCH scheduled by the DCI. For example, if each PDSCH among the at least one PDSCH is associated with a first number of PDSCH transmission occasions, the first PDSCH transmission occasion among the first number of PDSCHs is referred to as the first PDSCH transmission occasion, and the second or last PDSCH transmission occasion among the first number of PDSCHs is referred to as the second PDSCH transmission occasion. The first PDSCH transmission occasion and the second PDSCH transmission occasion correspond to different TCI states (TRPs) but carry the same TB. The first PDSCH transmission occasion is determined based on the SLIV indicated by the DCI, and the second PDSCH transmission occasion is determined based on the first PDSCH transmission occasion and an offset value. For example, the offset value is a time-domain offset value between the last symbol of the first PDSCH transmission occasion and the first symbol of the second PDSCH transmission occasion. The method for determining the offset value may refer to Example 1, and the description thereof will be omitted here.

[0103] In some embodiments, to support scheduling multiple PDSCHs via one DCI and / or a repetitive transmission scheme for the same TB in a multi-TRP scenario (e.g., "tdmSchemeA"), whether a slot (downlink slot) has a corresponding candidate PDSCH reception occasion is determined based on whether a symbol corresponding to a first PDSCH transmission occasion and / or a second PDSCH transmission occasion in a PDSCH time domain resource configuration corresponding to the slot collides with a semi-statically configured uplink symbol. For example, if a symbol corresponding to a first PDSCH transmission occasion and / or a second PDSCH transmission occasion collides with a semi-statically configured uplink symbol, it is determined that there is no candidate PDSCH reception occasion corresponding to the slot; otherwise, it is determined that there is a corresponding candidate PDSCH reception occasion.

[0104] In some embodiments, the first allocation table is used to determine candidate PDSCH reception occasions and / or is used to schedule the PDSCH.

[0105] In some embodiments, the PDSCH TDRA configurations and / or indexes corresponding to the configurations may be included in a first allocation table. For example, the first allocation table may be determined based on a PDSCH TDRA table applicable to each DCI format (this table supports scheduling multiple PDSCHs via one DCI; see Example 1 for details), and the PDSCH time domain resource configuration may be determined based on the first allocation table. The first allocation table is also associated with an activated DL BWP. The first allocation table is a union of time domain resource allocation tables of DCI formats that need to be monitored and are configured by the terminal device in serving cell c. For example, the first allocation table may include a union of all rows of PDSCH TDRA tables that apply to the DCI formats that need to be monitored, where the configuration of each row is the same as that of the PDSCH TDRA table. For example, for a specific activated DL BWP, Table 1 is an example of the first allocation table. As shown in Table 1 below, one PDSCH TDRA configuration (corresponding to one row of the first allocation table) includes at least one PDSCH time-domain resource configuration, and the PDSCH time-domain resource configuration includes at least a symbol position in a slot (start symbol + length) configuration. Preferably, one PDSCH TDRA configuration may also include at least one slot offset K0 configuration, where K0 represents the slot offset of the PDSCH and PDCCH. One PDSCH TDRA configuration may also include other information (e.g., a mapping scheme), which may or may not be included in the PDSCH time-domain resource configuration. Also, when ReferenceofSLIV-ForDCIFormat1_2 is configured for the terminal device, it is necessary to add a new row based on the PDSCH TDRA table of DCI format 1_2. Here, an example thereof will not be described, and the prior art may be referred to for details.

[0106] [Table 1] In some embodiments, the first allocation table (Table 1) may be extended based on the offset value. For example, each existing SLIV in the first allocation table may be set as a first PDSCH transmission occasion, a second PDSCH transmission occasion corresponding to each SLIV may be determined based on the offset value, and the second PDSCH transmission occasion may be added to the first allocation table (by adding a row index and / or adding a SLIV corresponding to each row).

[0107] In some embodiments, a candidate PDSCH reception occasion is determined based on whether a PDSCH time domain resource configuration (e.g., SLIV) of each row in an extended first allocation table (the first allocation table extended based on the offset value, in other words, the first allocation table is associated with the offset value) collides with an uplink symbol. For example, when time domain bundling is configured, for one K1, if the SLIV of at least one row in the first allocation table does not collide with a semi-statically configured uplink symbol, it is determined that there is a corresponding candidate PDSCH reception occasion, and if not, it is determined that there is no corresponding candidate PDSCH reception occasion. Since the SLIV in the at least one row may be a first PDSCH transmission occasion or a second PDSCH transmission occasion, it may be considered that if a symbol of at least one of the first PDSCH transmission occasions and / or the second PDSCH transmission occasions does not collide with a semi-statically configured uplink symbol, it is determined that there is a corresponding candidate PDSCH reception occasion, and if not, it is determined that there is no corresponding candidate PDSCH reception occasion.If time-domain bundling is not configured, if at least one SLIV corresponding to a slot corresponding to one K1 in the first allocation table does not collide with a semi-statically configured uplink symbol, it is determined that there is a corresponding candidate PDSCH reception occasion, and if not, it is determined that there is no corresponding candidate PDSCH reception occasion.

[0108] Alternatively, instead of extending the first allocation table based on the offset value, each existing SLIV in the first allocation table may be set as a first PDSCH transmission occasion, and a candidate PDSCH reception occasion may be determined based on whether the PDSCH time domain resource configuration (e.g., SLIV) of each row in the first allocation table that is not extended based on the offset value collides with an uplink symbol. For example, when time domain bundling is configured, for one K1, if the SLIV of at least one row in the first allocation table that is not extended based on the offset value does not collide with a semi-statically configured uplink symbol, it is determined that there is a corresponding candidate PDSCH reception occasion; otherwise, it is determined that there is no corresponding candidate PDSCH reception occasion. Since each SLIV corresponds to a first PDSCH transmission occasion, if at least one symbol of the first PDSCH transmission occasion does not collide with a semi-statically configured uplink symbol, it may be determined that there is a corresponding candidate PDSCH reception occasion; otherwise, it may be determined that there is no corresponding candidate PDSCH reception occasion. When time domain bundling is not configured, if at least one SLIV corresponding to a slot corresponding to one K1 in the first allocation table that is not extended based on the offset value does not collide with a semi-statically configured uplink symbol, it is determined that there is a corresponding candidate PDSCH reception occasion, and if not, it is determined that there is no corresponding candidate PDSCH reception occasion.

[0109] In some embodiments, after determining the candidate PDSCH receiving occasion set in step 1002, a HARQ-ACK codebook including HARQ-ACK information corresponding to the candidate PDSCH receiving occasion set is further generated. The following further describes how to generate the codebook based on the candidate PDSCH receiving occasion set.

[0110] In some embodiments, the size of the codebook does not change dynamically according to the actual data scheduling situation, but is pre-configured (e.g., configured by higher layer signaling) or determined based on pre-defined parameters. The following only describes how to determine the HARQ-ACK information bits of the serving cell.

[0111] In some embodiments, if time domain bundling is not configured, the number of HARQ-ACK information bits corresponding to the candidate PDSCH reception occasions of the serving cell is related to the HARQ spatial bundling parameters (harq-ACK-SpatialBundlingPUCCH), the code block group (CBG) configuration parameters (PDSCH-CodeBlockGroupTransmission), and the maximum supported words parameter (maxNrofCodeWordsScheduledByDCI) configured by the cell. As an example, Table 2 below shows the HARQ-ACK information being fed back on the PUCCH.

[0112] [Table 2] The above is merely an example, and the method for determining the number of bits and bit value of HARQ-ACK information corresponding to a candidate PDSCH reception occasion of a serving cell is not limited to this. For example, when time domain bundling is configured, the logical sum of bit values ​​of HARQ feedback information corresponding to (valid) PDSCHs related to the candidate PDSCH reception occasion may be calculated, and the value of the logical sum may be used as the bit value of HARQ-ACK information corresponding to the candidate PDSCH reception occasion. If there is no PDSCH corresponding to the candidate PDSCH reception occasion, the bit value of the corresponding HARQ-ACK information may be set to NACK. Explanation of this will be omitted here. As shown in FIG. 16A, the bit value of HARQ-ACK information corresponding to candidate PDSCH reception occasion 0 is the logical sum of bit values ​​of HARQ-ACK information corresponding to SLIV1_0 and SLIV1_1, and the bit value of HARQ-ACK information corresponding to candidate PDSCH reception occasion 0 is NACK. As shown in Figure 16B, the bit value of the HARQ-ACK information corresponding to candidate PDSCH reception occasion 0 is the bit value of the HARQ-ACK information of the PDSCH corresponding to SLIV 1_0, the bit value of the HARQ-ACK information corresponding to candidate PDSCH reception occasion 1 is the bit value of the HARQ-ACK information of the PDSCH corresponding to SLIV 1_1, and the bit value of the HARQ-ACK information corresponding to candidate PDSCH reception occasion 2 is NACK.

[0113] In some embodiments, since one candidate PDSCH reception occasion corresponds to one PDSCH, the HARQ-ACK information bits corresponding to each candidate PDSCH reception occasion are rearranged in the order of the second number of candidate PDSCH reception occasions in the candidate PDSCH reception occasion set to obtain the HARQ-ACK information bits of one serving cell. As described above, when the codebook includes the HARQ-ACK information bits of one serving cell, the HARQ-ACK information bits of the one serving cell are fed back as a codebook. When the codebook includes the HARQ-ACK information bits of multiple serving cells, the method of determining the HARQ-ACK information bits of each serving cell is the same as the method of determining the HARQ-ACK information bits of one serving cell, but when specifically determining the HARQ-ACK information bits, other parameters such as the PDSCH TDRA configuration corresponding to each serving cell may be the same or different. For example, the above parameters may be configured individually for each serving cell, but this embodiment is not limited to this. The HARQ-ACK information bits corresponding to each serving cell may be sequentially sorted in ascending order of the serving cell index to generate a codebook for feedback.

[0114] It should be noted that the method may further include the following steps: the terminal device receives higher layer signaling transmitted by the network device, and the higher layer signaling (e.g., a repetitionScheme parameter in the RRC signaling) is used to configure a repetition transmission scheme for the same TB (e.g., to "tdmSchemeA") in a multi-TRP scenario. In other words, the aspect in step 1001 is used when determining a candidate PDSCH receiving occasion set only when "tdmSchemeA" and / or multi-PDSCH scheduling is configured for the terminal device, although embodiments of the present invention are not limited thereto.

[0115] According to this embodiment, it is possible to support HARQ feedback in the case of multi-TRP repetition scheme and / or multi-PDSCH scheduling, thereby reducing the burden of PDCCH monitoring on the UE and reducing power loss and UE complexity.

[0116] 4, 9, and 10 merely show schematic diagrams of embodiments of the present invention, and the present invention is not limited thereto. For example, the execution order of various steps may be appropriately adjusted, some other steps may be added, or some steps may be removed. Those skilled in the art can make appropriate modifications based on the above content, and the present invention is not limited to the descriptions of the above FIGS. 4, 9, and 10.

[0117] The above-described embodiments are merely illustrative of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0118] Example 4 An embodiment of the present invention provides an information receiving device. The device may be, for example, a terminal device, or one or more elements or components configured in the terminal device. Descriptions of the same content as in the first embodiment will be omitted.

[0119] 11 is a schematic diagram of an example of an information receiving device according to an embodiment of the present invention. As shown in FIG. 11, the information receiving device 1100 includes the following units.

[0120] The first receiving unit 1101 receives downlink control information for scheduling a PDSCH sent by a network device, the downlink control information indicating a first number of TCI states, where the first number is an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information include a plurality of SLIVs.

[0121] The second receiving unit 1102 receives one or more PDSCHs among the PDSCHs scheduled by the downlink control information.

[0122] In some embodiments, the terminal device may further include a third determination unit (not shown). The third determination unit determines the first number of PDSCH transmission occasions for each PDSCH among the PDSCHs scheduled by the downlink control information. Each PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. The second receiving unit receives or does not receive the PDSCH at each PDSCH transmission occasion. The following exemplarily describes the first number of PDSCH transmission occasions and a method for determining whether to receive the PDSCH at each PDSCH transmission occasion.

[0123] In some embodiments, the DCI schedules multiple PDSCHs.

[0124] In some embodiments, if there is a PDSCH transmission occasion that collides with an uplink symbol that is semi-statically configured for the PDSCH, the second receiver does not receive the PDSCH, and if there is no PDSCH transmission occasion that collides with an uplink symbol that is semi-statically configured for the PDSCH, the second receiver receives the PDSCH.

[0125] In some embodiments, if there is a PDSCH transmission occasion that does not collide with an uplink symbol that is semi-statically configured for the PDSCH, the second receiver receives the PDSCH, and if there is no PDSCH transmission occasion that does not collide with an uplink symbol that is semi-statically configured for the PDSCH, the second receiver does not receive the PDSCH.

[0126] In some embodiments, the second receiver receives the PDSCH at PDSCH transmission occasions that do not collide with semi-statically configured uplink symbols.

[0127] In some embodiments, if the first PDSCH transmission occasion of a PDSCH does not collide with a semi-statically configured uplink symbol, the second receiver receives the PDSCH, and if the first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the second receiver does not receive the PDSCH.

[0128] In some embodiments, the apparatus may further include a fifth determiner (not shown). The fifth determiner determines a HARQ process identifier for a PDSCH scheduled by the DCI. The apparatus may not include a second receiver, but may include a first receiver and a fifth determiner.

[0129] In some embodiments, if there is a PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID, and if there is no PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID.

[0130] In some embodiments, if there is a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID, and if there is no PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID.

[0131] In some embodiments, if the first PDSCH transmission occasion of a PDSCH does not collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process ID, and if the first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID.

[0132] In some embodiments, the DCI schedules one PDSCH.

[0133] In some embodiments, the second receiver receives the PDSCH at the first number of PDSCH transmission occasions, or the second receiver receives the PDSCH at one or more PDSCH transmission occasions of the first number of PDSCH transmission occasions depending on whether or not it collides with a semi-statically configured uplink symbol.

[0134] In some embodiments, the terminal device may further include a fourth determiner (not shown). The fourth determiner determines the first number of PDSCH transmission occasions for valid PDSCHs among the PDSCHs scheduled by the downlink control information. Each valid PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. The second determiner does not determine the first number of PDSCH transmission occasions for invalid PDSCHs among the PDSCHs scheduled by the downlink control information. The second receiver receives or does not receive a PDSCH at each PDSCH transmission occasion.

[0135] In some embodiments, the DCI schedules one or more PDSCHs, the one or more PDSCHs including only one valid PDSCH, the valid PDSCH corresponding to the first number of PDSCH transmission occasions.

[0136] In some embodiments, the valid PDSCH is a PDSCH whose corresponding time domain resource configuration does not collide with a semi-statically configured uplink symbol.

[0137] In some embodiments, the second receiver receives the valid PDSCH in the first number of PDSCH transmission occasions, or the second receiver receives the valid PDSCH in one or more PDSCH transmission occasions of the first number of PDSCH transmission occasions depending on whether or not it collides with a semi-statically configured uplink symbol.

[0138] In some embodiments, the first number of PDSCH transmission occasions includes a first PDSCH transmission occasion and a second PDSCH transmission occasion.The apparatus further includes the following units (not shown):

[0139] The first determiner determines a set of candidate PDSCH reception occasions based on symbols corresponding to the first PDSCH transmission occasions and / or symbols corresponding to the second PDSCH transmission occasions and / or based on a first allocation table, which is associated with an offset value between the first PDSCH transmission occasions and the second PDSCH transmission occasions.

[0140] The first processing unit generates and sends a HARQ-ACK codebook, where the HARQ-ACK codebook includes HARQ-ACK information corresponding to the candidate PDSCH receiving occasion set.

[0141] In some embodiments, the first receiving unit 1101 and the second receiving unit 1102 may refer to steps 401 and 402 in the first embodiment, and the description of the overlapping contents will be omitted.

[0142] <Example 5> An embodiment of the present invention provides an information transmission device. The device may be, for example, a network device, or one or more elements or components configured in the network device. The same content as in the second embodiment will not be described again.

[0143] 12 is a schematic diagram of an example of an information transmission device according to an embodiment of the present invention. As shown in FIG. 12, an information transmission device 1200 includes the following units.

[0144] The first transmitting unit 1201 transmits downlink control information for scheduling a PDSCH to a terminal device, where the downlink control information indicates a first number of TCI states, where the first number is an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information include a plurality of SLIVs.

[0145] The second transmitting unit 1202 transmits one or more PDSCHs among the PDSCHs scheduled by the downlink control information.

[0146] In some embodiments, the first transmitting unit 1201 and the second transmitting unit 1202 may refer to steps 901 and 902 in the second embodiment, and the description of the overlapping contents will be omitted.

[0147] According to this embodiment, even if one DCI supports scheduling multiple PDSCHs, a multi-TRP repetition scheme can be supported, thereby reducing the number of times a terminal device monitors a PDCCH, thereby reducing the complexity and power consumption of the terminal device's PDCCH monitoring, and also reducing the resource overhead for transmitting downlink control signaling (DCI), thereby improving data throughput.

[0148] Example 6 An embodiment of the present invention provides an information feedback device. The device may be, for example, a terminal device, or one or more elements or components configured in the terminal device. The same content as in the third embodiment will not be described again.

[0149] 13 is a schematic diagram of an example of an information feedback device according to an embodiment of the present invention. As shown in FIG. 13, the information feedback device 1300 includes the following components:

[0150] The second determining unit 1301 determines a set of candidate PDSCH reception occasions based on the symbols corresponding to the first PDSCH transmission occasions and / or the symbols corresponding to the second PDSCH transmission occasions and / or based on a first allocation table, which is associated with an offset value between the first PDSCH transmission occasions and the second PDSCH transmission occasions.

[0151] The second processing unit 1302 generates and sends a HARQ-ACK codebook, which includes HARQ-ACK information corresponding to the candidate PDSCH receiving occasion set.

[0152] In some embodiments, the device may further include the following components (not shown):

[0153] The third receiving unit receives downlink control information transmitted by the network device, the downlink control information indicating a first number of TCI states, the first PDSCH transmission occasion and the second PDSCH transmission occasion corresponding to one PDSCH, and the first PDSCH transmission occasion and the second PDSCH transmission occasion corresponding to different TCI states, respectively.

[0154] In some embodiments, the offset value is a time-domain offset value between the last symbol of the first PDSCH transmission occasion and the first symbol of the second PDSCH transmission occasion.

[0155] In some embodiments, the second determination unit 1301 and the second processing unit 1302 may refer to steps 1001 and 1002 in the third embodiment, and the description of the overlapping contents will be omitted.

[0156] According to this embodiment, it is possible to support feedback of HARQ information for a multi-TRP repetition scheme and support a method of scheduling multiple PDSCHs through one DCI, thereby reducing the burden of PDCCH monitoring on the UE and reducing power loss and UE complexity.

[0157] The above-described embodiments are merely illustrative of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on the above-described embodiments. For example, each of the above-described embodiments may be used alone, or one or more of the above-described embodiments may be used in combination.

[0158] Although the above describes only the components or modules related to the present invention, the present invention is not limited thereto. Each of the devices in Figures 11 to 13 may further include other components or modules. For specific details of these components or modules, reference may be made to related art.

[0159] 11 to 13 only exemplify the connection relationships or signal directions between various components or modules, but it will be apparent to those skilled in the art that various related technologies such as bus connections can be used. The various components or modules described above may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0160] The above-described fourth and sixth embodiments may be implemented alone or in combination, and the present invention is not limited thereto.

[0161] Example 7 The embodiment of the present invention further provides a communication system, and reference may be made to FIG. 3, and the description of the same contents as those of the first to sixth embodiments will be omitted.

[0162] In some embodiments, the communication system 100 may include at least a terminal device 102 and a network device 101 .

[0163] In some embodiments, the aspects of the terminal device 102 may refer to the terminal device 1500, and the aspects of the network device may refer to the network device 1400, and the description thereof will be omitted here.

[0164] An 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 be other network devices.

[0165] Fig. 14 is a schematic diagram of a network device according to an embodiment of the present invention. As shown in Fig. 14, the network device 1400 may include a processor 1410 (e.g., a central processing unit (CPU)) and a memory 1420, which is connected to the processor 1410. The memory 1420 may store various data and may further store an information processing program 1430, which is executed under the control of the processor 1410.

[0166] For example, the processor 1410 may execute a program to implement the information transmission method described in the second embodiment.

[0167] 14, the network device 1400 may further include a transceiver 1440 and an antenna 1450. The functions of the above components are similar to those of the prior art, and a description thereof will be omitted here. The network device 1400 does not need to include all the units shown in FIG. 14. The network device 1400 may further include units not shown in FIG. 14, and the prior art may be referred to.

[0168] The embodiment of the present invention further provides a terminal device, but the present invention is not limited thereto and may be other devices.

[0169] 15 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 15, the terminal device 1500 may include a processor 1510 and a memory 1520, where the memory 1520 stores data and programs and is connected to the processor 1510. It should be noted that this diagram is illustrative, and other types of structures may be used to supplement or replace this structure to realize communication functions or other functions.

[0170] For example, the processor 1510 may execute a program to implement the information receiving method described in the first embodiment or the information feedback method described in the third embodiment.

[0171] 15, the terminal device 1500 may further include a communication module 1530, an input unit 1540, a display 1550, a power supply 1560, and the like. Here, the functions of the above units are similar to those of the prior art, and therefore, description thereof will be omitted here. Note that the terminal device 1500 does not need to include all of the units shown in FIG. 15. The terminal device 1500 may further include units not shown in FIG. 15, and prior art may be referred to.

[0172] An embodiment of the present invention further provides a computer-readable program that, when executed in a terminal device, causes the terminal device to execute the information receiving method described in the first embodiment.

[0173] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the storage medium causing a terminal device to execute the information receiving method described in embodiment 1 when the program is executed.

[0174] An embodiment of the present invention further provides a computer-readable program, which, when executed in a network device, causes the network device to perform the information transmission method described in embodiment 2.

[0175] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program causing a network device to perform the information transmission method described in embodiment 2 when the program is executed.

[0176] An embodiment of the present invention further provides a computer-readable program, which, when executed in a terminal device, causes the terminal device to perform the information feedback method described in embodiment 3.

[0177] An embodiment of the present invention further provides a storage medium having a computer-readable program stored therein, the program causing a terminal device to perform the information feedback method described in embodiment 3 when the program is executed.

[0178] The above-described apparatus and method of the present invention may be realized by hardware or a combination of hardware and software. The present invention relates to a computer-readable program that, when executed by a logic unit, causes the logic unit to implement the above-described apparatus or components, or to implement the above-described various methods or steps. The present invention also relates to a storage medium for storing the above-described program, such as a hard disk, magnetic disk, optical disk, DVD, flash memory, etc.

[0179] Each processing method in each device described with reference to the embodiments of the present invention may be implemented by hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the drawings, or one or more combinations of the functional block diagrams, may correspond to each software module in a computer program flow or each hardware module. These software modules may correspond to each step shown in the drawings. These hardware modules may be implemented by implementing these software modules in hardware, for example, using a field programmable gate array (FPGA).

[0180] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card inserted into the mobile terminal. For example, if a device (e.g., a mobile terminal) uses a relatively large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0181] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams set forth in the figures may be implemented with 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 device, a discrete gate or transistor logic device, a discrete hardware component, or any suitable combination thereof to perform the functions described herein. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams set forth in the figures may be implemented with, for example, a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other configuration.

[0182] Although the present invention has been described above with reference to specific embodiments, the above description is merely illustrative and does not limit the scope of protection of the present invention. Various modifications and changes may be made to the present invention without departing from the spirit and principles of the present invention, and these modifications and changes are also within the scope of the present invention.

[0183] Furthermore, the following supplementary notes are disclosed regarding the embodiments including the above examples. (Appendix 1) An information receiving method, comprising: a step of receiving, by a terminal device, downlink control information (DCI) for scheduling a PDSCH, transmitted by a network device, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information including a plurality of SLIVs; and receiving, by the terminal device, one or more PDSCHs among the PDSCHs scheduled by the downlink control information. (Appendix 2) The method of claim 1, wherein the terminal device determines the first number of PDSCH transmission occasions for each PDSCH among the PDSCHs scheduled by the downlink control information. (Appendix 3) 3. The method of claim 1, wherein each PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. (Appendix 4) The method according to claim 2 or 3, wherein the terminal device receives or does not receive a PDSCH at each PDSCH transmission occasion. (Appendix 5) 5. The method of any one of Supplementary Notes 1 to 4, wherein the DCI schedules multiple PDSCHs. (Appendix 6) If there is a PDSCH transmission occasion that collides with an uplink symbol semi-statically configured for a PDSCH, the terminal device does not receive the PDSCH; 6. The method of claim 5, wherein the terminal device receives the PDSCH if there is no PDSCH transmission occasion that conflicts with an uplink symbol semi-statically configured for the PDSCH. (Appendix 7) If there is a PDSCH transmission occasion that does not collide with an uplink symbol semi-statically configured for the PDSCH, the terminal device receives the PDSCH; The method according to Supplementary Note 5, wherein if there is no PDSCH transmission occasion that does not collide with an uplink symbol semi-statically configured for the PDSCH, the terminal device does not receive the PDSCH. (Appendix 8) The method described in Supplementary Note 5, wherein the terminal device receives a PDSCH in a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol. (Appendix 9) If the first PDSCH transmission occasion of the PDSCH does not collide with a semi-statically configured uplink symbol, the terminal device receives the PDSCH; The method according to Supplementary Note 5, wherein if the first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the terminal device does not receive the PDSCH. (Appendix 10) If there is a PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for a PDSCH, the PDSCH does not have a corresponding HARQ process ID; 7. The method of claim 6, wherein if there is no PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID. (Appendix 11) If there is a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID; 10. The method of any of Supplementary Notes 6 to 9, wherein if there is no PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID. (Appendix 12) If the first PDSCH transmission occasion of a PDSCH does not collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process ID; 10. The method according to claim 6 or 9, wherein if the first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID. (Appendix 13) 5. The method of claim 2, wherein the DCI schedules one PDSCH. (Appendix 14) The terminal device receives the PDSCH in the first number of PDSCH transmission occasions, or 14. The method of claim 13, wherein the terminal device receives the PDSCH on one or more PDSCH transmission occasions of the first number of PDSCH transmission occasions depending on whether or not it collides with a semi-statically configured uplink symbol. (Appendix 15) The method of claim 1, wherein the terminal device determines the first number of PDSCH transmission occasions for valid PDSCHs among PDSCHs scheduled by the downlink control information. (Appendix 16) 16. The method of claim 1 or 15, wherein each valid PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. (Appendix 17) 17. The method of claim 15 or 16, wherein the terminal device receives or does not receive a PDSCH at each PDSCH transmission occasion. (Appendix 18) 18. The method of claim 17, further comprising: the terminal device not determining the first number of PDSCH transmission occasions for invalid PDSCHs among the PDSCHs scheduled by the downlink control information. (Appendix 19) 19. The method of any of Supplementary Notes 1 and 15 to 18, wherein the DCI schedules one or more PDSCHs, the one or more PDSCHs including only one valid PDSCH, the valid PDSCH corresponding to the first number of PDSCH transmission occasions. (Appendix 20) 20. The method of any of Supplementary Notes 15 to 19, wherein the valid PDSCH is a PDSCH whose corresponding time domain resource configuration does not collide with a semi-statically configured uplink symbol. (Appendix 21) The terminal device receives the valid PDSCH in the first number of PDSCH transmission occasions, or 21. A method according to any one of Supplementary Notes 15 to 20, wherein the terminal device receives the valid PDSCH on one or more PDSCH transmission occasions of the first number of PDSCH transmission occasions depending on whether or not it collides with a semi-statically configured uplink symbol. (Appendix 22) the first number of PDSCH transmission occasions includes a first PDSCH transmission occasion and a second PDSCH transmission occasion; The method comprises: determining a set of candidate PDSCH reception occasions based on a symbol corresponding to the first PDSCH transmission occasion and / or a symbol corresponding to the second PDSCH transmission occasion and / or based on a first allocation table, the first allocation table relating to an offset value between the first PDSCH transmission occasion and the second PDSCH transmission occasion; 22. The method of any one of Supplementary Notes 1 to 21, further comprising: a step of generating and transmitting a HARQ-ACK codebook by the terminal device, the HARQ-ACK codebook including HARQ-ACK information corresponding to the candidate PDSCH reception occasion set. (Appendix 23) 1. A method for transmitting information, comprising: a step of transmitting downlink control information for scheduling a PDSCH from a network device to a terminal device, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information including a plurality of SLIVs; and transmitting, by the network device, one or more PDSCHs scheduled by the downlink control information. (Appendix 24) 1. An information feedback method, comprising: a step of determining a set of candidate PDSCH reception occasions by the terminal device based on symbols corresponding to the first PDSCH transmission occasions and / or symbols corresponding to the second PDSCH transmission occasions and / or based on a first allocation table, the first allocation table relating to an offset value between the first PDSCH transmission occasions and the second PDSCH transmission occasions; and a step of the terminal device generating and transmitting a HARQ-ACK codebook, the HARQ-ACK codebook including HARQ-ACK information corresponding to the candidate PDSCH reception occasion set. (Appendix 25) 25. The method of claim 24, further comprising: receiving, by the terminal device, downlink control information transmitted by a network device, the downlink control information indicating a first number of TCI states, the first PDSCH transmission occasion and the second PDSCH transmission occasion corresponding to one PDSCH, and the first PDSCH transmission occasion and the second PDSCH transmission occasion corresponding to different TCI states, respectively. (Appendix 26) 26. The method of claim 24 or 25, wherein the offset value is a time-domain offset value between a last symbol of the first PDSCH transmission occasion and a first symbol of the second PDSCH transmission occasion. (Appendix 27) An information receiving method, comprising: a step of receiving, by a terminal device, downlink control information DCI for scheduling a PDSCH, transmitted by a network device, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information including a plurality of SLIVs; and a step by the terminal device of determining a HARQ process identifier corresponding to the scheduled PDSCH. (Appendix 28) 28. The method of claim 27, wherein the terminal device determines the first number of PDSCH transmission occasions for each PDSCH among the PDSCHs scheduled by the downlink control information. (Appendix 29) 29. The method of claim 27 or 28, wherein each PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. (Appendix 30) 30. The method of any of claims 27 to 29, wherein the DCI schedules multiple PDSCHs. (Appendix 31) If there is a PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for a PDSCH, the PDSCH does not have a corresponding HARQ process ID; 31. The method of any of statements 27 to 30, wherein if there is no PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID. (Appendix 32) If there is a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID; 31. The method of any of Supplementary Notes 27 to 30, wherein if there is no PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID. (Appendix 33) If the first PDSCH transmission occasion of a PDSCH does not collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process ID; 31. The method of any of Supplementary Notes 27 to 30, wherein if the first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID. (Appendix 34) 24. A network device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to implement the information transmission method of claim 23. (Appendix 35) 10. A terminal device comprising: a memory having a computer program stored therein; and a processor, the processor configured to execute the computer program to implement a method according to any one of claims 1 to 22 and claims 24 to 33. (Appendix 36) A communication system including a terminal device according to Supplementary Note 35 and / or a network device according to Supplementary Note 34. (Appendix 37) An information receiving device applied to a terminal device, a first receiving unit for receiving downlink control information (DCI) for scheduling a PDSCH, the downlink control information being transmitted by a network device, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1, and one or more rows in a TDRA table corresponding to the downlink control information including a plurality of SLIVs; a fifth determination unit that determines a HARQ process identifier corresponding to the scheduled PDSCH. (Appendix 38) The apparatus of claim 37, wherein the terminal device determines the first number of PDSCH transmission occasions for each PDSCH among the PDSCHs scheduled by the downlink control information. (Appendix 39) 39. The apparatus of claim 37 or 38, wherein each PDSCH among the PDSCHs scheduled by the downlink control information corresponds to the first number of PDSCH transmission occasions. (Appendix 40) 40. The apparatus of any of Supplementary Notes 37 to 39, wherein the DCI schedules multiple PDSCHs. (Appendix 41) If there is a PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for a PDSCH, the PDSCH does not have a corresponding HARQ process ID; 41. The apparatus of any of statements 37 to 40, wherein if there is no PDSCH transmission occasion that collides with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID. (Appendix 42) If there is a PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID; 41. The apparatus of any of Supplementary Notes 37 to 40, wherein if there is no PDSCH transmission occasion that does not collide with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID. (Appendix 43) If the first PDSCH transmission occasion of a PDSCH does not collide with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process ID; 41. The apparatus of any of Supplementary Notes 37 to 40, wherein if a first PDSCH transmission occasion of a PDSCH collides with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID.

Claims

1. An information receiving device applied to a terminal device, a receiver configured to receive downlink control information (DCI) for scheduling PDSCHs, transmitted by a network device, and to receive one or more PDSCHs among the PDSCHs scheduled by the downlink control information, wherein the downlink control information indicates a first number of TCI states, and the first number is an integer greater than 1; each PDSCH among the PDSCHs scheduled by the downlink control information includes the first number of PDSCH transmission occasions; When multiple PDSCHs are scheduled for the terminal device by the DCI, and a parameter repetitionScheme is configured and set to "tdmSchemeA", the PDSCHs correspond to the first number of PDSCH transmission occasions, and for each PDSCH, when any PDSCH transmission occasion overlaps with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID.

2. the first number is two; The apparatus of claim 1 , wherein one or more rows in the TDRA table corresponding to the downlink control information include multiple SLIVs.

3. The apparatus of claim 1 , wherein different transport blocks are carried by different PDSCHs scheduled by different DCIs.

4. 2. The apparatus of claim 1, wherein when a plurality of PDSCHs are scheduled by the DCI for a terminal device, a parameter repetitionScheme is configured, and the repetitionScheme is set to "tdmSchemeA", the PDSCHs correspond to the first number of PDSCH transmission occasions, and for each PDSCH, when any PDSCH transmission occasion overlaps with a semi-statically configured uplink symbol, the receiver does not receive the PDSCH.

5. The apparatus of claim 1 , wherein the DCI schedules multiple PDSCHs.

6. If there is a PDSCH transmission occasion that overlaps with a semi-statically configured uplink symbol for the PDSCH, the receiver does not receive the PDSCH; 6. The apparatus of claim 5, wherein the receiver receives the PDSCH if there is no PDSCH transmission occasion that overlaps with a semi-statically configured uplink symbol for the PDSCH.

7. If there is a PDSCH transmission occasion that does not overlap with a semi-statically configured uplink symbol for the PDSCH, the receiver receives the PDSCH; 6. The apparatus of claim 5, wherein if there is no PDSCH transmission occasion that does not overlap with a semi-statically configured uplink symbol for the PDSCH, the receiver does not receive the PDSCH.

8. 6. The apparatus of claim 5, wherein the receiver receives the PDSCH in PDSCH transmission occasions that do not overlap with semi-statically configured uplink symbols.

9. If a first PDSCH transmission occasion of a PDSCH does not overlap with a semi-statically configured uplink symbol, the receiver receives the PDSCH; 6. The apparatus of claim 5, wherein the receiver does not receive a PDSCH if its first PDSCH transmission occasion overlaps with a semi-statically configured uplink symbol.

10. If there is a PDSCH transmission occasion that overlaps with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID; 7. The apparatus of claim 6, wherein if there is no PDSCH transmission occasion that overlaps with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID.

11. If there is a PDSCH transmission occasion that does not overlap with a semi-statically configured uplink symbol for the PDSCH, the PDSCH has a corresponding HARQ process ID; 7. The apparatus of claim 6, wherein if there is no PDSCH transmission occasion that does not overlap with a semi-statically configured uplink symbol for the PDSCH, the PDSCH does not have a corresponding HARQ process ID.

12. If the first PDSCH transmission occasion of a PDSCH does not overlap with a semi-statically configured uplink symbol, the PDSCH has a corresponding HARQ process ID; 7. The apparatus of claim 6, wherein if a first PDSCH transmission occasion of a PDSCH overlaps with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID.

13. The apparatus of claim 1 , wherein the DCI schedules one PDSCH.

14. The receiver receives the PDSCH in the first number of PDSCH transmission occasions, or 14. The apparatus of claim 13, wherein the receiver receives the PDSCH on one or more PDSCH transmission occasions of the first number of PDSCH transmission occasions depending on whether they overlap with semi-statically configured uplink symbols.

15. The apparatus of claim 1 , further comprising: a processor configured to determine the first number of PDSCH transmission occasions for valid PDSCHs among PDSCHs scheduled by the downlink control information.

16. 16. The apparatus of claim 15, wherein the valid PDSCH is a PDSCH whose corresponding time domain resource configuration does not overlap with a semi-statically configured uplink symbol.

17. An information transmitting device applied to a network device, a transmitter that transmits downlink control information (DCI) for scheduling PDSCHs to a terminal device, and transmits one or more PDSCHs among the PDSCHs scheduled by the downlink control information, the downlink control information indicating a first number of TCI states, the first number being an integer greater than 1; each PDSCH among the PDSCHs scheduled by the downlink control information includes the first number of PDSCH transmission occasions; When multiple PDSCHs are scheduled for the terminal device by the DCI, and a parameter repetitionScheme is configured and set to "tdmSchemeA", the PDSCHs correspond to the first number of PDSCH transmission occasions, and for each PDSCH, when any PDSCH transmission occasion overlaps with a semi-statically configured uplink symbol, the PDSCH does not have a corresponding HARQ process ID.

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