Method and device for determining transmission parameters

Abstract

A method and device for determining transmission parameters. The device includes: a first receiving unit, receiving at least two TCI state-related parameters or signaling configured or indicated by a network device; and a first determining unit, determining the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field; or, determining the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling not containing the TCI field; or, determining the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field in the at least two TCI state-related parameters or signaling.

Description

Technical Field

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

[0002] New Radio (NR) systems must support a range of low-latency, high-reliability scenarios, including augmented reality (AR) and virtual reality (VR), factory automation, transportation scenarios including remote driving, and distributed power system control. These services require latency of 0.5 to 1 millisecond and reliability of 1e-6. Therefore, 5G (5th Generation) systems must research transmission technologies that combine high reliability and low latency to meet the requirements of these scenarios.

[0003] To improve transmission reliability, Rel-15 already supports repeated transmission of data channels, that is, multiple redundancy versions (RVs) of the same transport block (TB) are repeatedly transmitted in multiple consecutive time slots.

[0004] To further improve transmission reliability and reduce transmission latency, Rel-16 enhances the repeated transmission of data channels. For example, multiple versions of repeated transmission (also called repeated versions) can be transmitted within a single time slot, achieving mini-slot-level repeated transmission. Another example is using multiple transmission points (TRPs) to transmit the same data to terminal devices, thereby increasing transmission reliability. The multiple repeated versions transmitted by multiple TRPs can be space division multiplexing (SDM), frequency division multiplexing (FDM), or time division multiplexing (TDM). Furthermore, time division multiplexing can include time division multiplexing at the time slot level or time division multiplexing at the non-time slot (e.g., non-slot, mini-slot, sub-slot, etc.) level. In addition, it can also be a combination of the above multiplexing methods, such as a combination of SDM and FDM, a combination of SDM and TDM, a combination of TDM and FDM, or a combination of SDM, TDM, and FDM.

[0005] When combining multi-TRP technology for transmission, multiple TRPs can also use beamforming technology to transmit the same repeated version. Each TRP uses a different beamforming factor to precode (weight) the data channel. Even if the transmission link quality between one of the TRPs and the terminal device is poor, resulting in signal reception failure, as long as one repeated version is transmitted correctly, the reliability of the transmission is greatly increased. In beamforming technology, the beamforming factor is configured or indicated to the terminal device in the form of a transmission configuration indication (TCI). The terminal device can then select the appropriate receive filter to receive the signal to maximize the signal transmission quality.

[0006] It should be noted that the above technical background is merely provided to provide a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. Simply because these solutions are described in the technical background section of the present invention, it should not be assumed that the above technical solutions are well known to those skilled in the art. Summary of the Invention

[0007] In Rel-15, during repeated transmissions of the same or different versions of the same transport block, the downlink control information (DCI) indicates only the transmission parameters for the first transmission opportunity (i.e., the transmission time of the first repeated version). The transmission parameters for all other transmission opportunities remain the same as for the first transmission opportunity. Examples of these transmission parameters include time domain resource allocation, frequency domain resource allocation, DMRS antenna ports, and TCI status.

[0008] Rel-16 newly introduces the TCI state mapping style parameter, which is used to configure the TCI state style when multiple repeated versions are sent at multiple transmission opportunities. The TCI state mapping style parameter will configure a TCI mapping style containing up to two TCI states, and then dynamically indicate the two TCI states through DCI signaling.

[0009] Therefore, the terminal device can obtain the TCI status of each transmission opportunity based on the TCI status mapping style configured by the RRC signaling and the specific TCI status indicated by the TCI field in the DCI signaling.

[0010] However, the inventors discovered that in some cases, the DCI signaling does not include a TCI status indication field. In this case, there is no clear regulation on how the terminal device determines the TCI status. Therefore, the TCI status of each transmission opportunity determined by the terminal device may be inconsistent with the TCI status used by the network device for downlink transmission, which may lead to transmission failure.

[0011] In order to solve at least one of the above problems, an embodiment of the present invention provides a method and apparatus for determining transmission parameters.

[0012] According to a first aspect of an embodiment of the present invention, a device for determining transmission parameters is provided, which is applied to a terminal device side, and the device includes: a first receiving unit, which is used to receive at least two TCI state-related parameters or signaling configured or indicated by a network device; and a first determining unit, which is used to determine the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the parameters or signaling indicating that the DCI signaling contains the TCI domain; or, determine the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI domain; or, determine the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI domain in the at least two TCI state-related parameters or signaling.

[0013] According to a second aspect of an embodiment of the present invention, a transmission parameter determination device is provided, which is applied to a terminal device side, and the device includes: a second receiving unit, which is used to receive a parameter or signaling indicating that a TCI domain is included in the DCI signaling, a parameter or signaling indicating that the TCI domain is not included in the DCI signaling, a DCI signaling containing the TCI domain, and at least two TCI state-related parameters or signaling in the DCI signaling not containing the TCI domain; a fourth determining unit, which is used to determine that the TCI states of more than one transmission opportunity are all the first TCI state, and the first TCI state is the first TCI state indicated in the DCI signaling. TCI state, or determining that the TCI states used for more than one transmission opportunity are all TCI states predefined when the DCI signaling does not include a TCI indication field; or, a fifth determination unit, which is used to determine that the TCI state style of more than one transmission opportunity is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0014] According to a third aspect of an embodiment of the present invention, a device for determining transmission parameters is provided, which is applied to a terminal device side, and the device includes: a third receiving unit, which is used to receive URLLC scheme 3 related configuration parameters, and receive parameters or signaling indicating that the DCI signaling does not contain a TCI domain or receive DCI signaling that does not contain a TCI indication domain; and a sixth determination unit, which is used to determine that the scheduled PDSCH has only one transmission opportunity and the TCI state used for the transmission opportunity is a predefined TCI state when the DCI signaling does not contain a TCI indication domain, or a seventh determination unit, which is used to determine that the scheduled PDSCH has two transmission opportunities, and the TCI states used for the two transmission opportunities are both two predefined TCI states when the DCI signaling does not contain a TCI indication domain.

[0015] According to a fourth aspect of an embodiment of the present invention, a device for determining transmission parameters is provided, which is applied to a network device side, and the device includes: a first sending unit, which is used to configure or indicate at least two TCI state-related parameters or signaling to a terminal device, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the parameters or signaling indicating that the DCI signaling contains the TCI domain; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI domain; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI domain in the at least two TCI state-related parameters or signaling.

[0016] According to a fifth aspect of the embodiments of the present invention, a terminal device is provided, comprising the apparatus according to any one of the first to third aspects of the embodiments of the present invention.

[0017] According to a sixth aspect of the embodiments of the present invention, a network device is provided, comprising the apparatus according to the fourth aspect of the embodiments of the present invention.

[0018] According to a seventh aspect of an embodiment of the present invention, a communication system is provided, which includes the terminal device according to the fifth aspect of the embodiment of the present invention and / or the network device according to the sixth aspect of the embodiment of the present invention.

[0019] According to an eighth aspect of an embodiment of the present invention, a method for determining transmission parameters is provided, which is applied to a terminal device side, and the method includes: receiving at least two TCI state-related parameters or signaling configured or indicated by a network device; and determining the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the parameters or signaling indicating that the DCI signaling contains the TCI domain; or, determining the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI domain; or, determining the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI domain in the at least two TCI state-related parameters or signaling.

[0020] According to a ninth aspect of an embodiment of the present invention, a method for determining a transmission parameter is provided, the method being applied to a terminal device side, the method comprising: the terminal device receiving a parameter or signaling indicating that a TCI domain is included in DCI signaling, a parameter or signaling indicating that a TCI domain is not included in DCI signaling, DCI signaling including a TCI domain, and DCI signaling not including a TCI domain, at least two TCI state-related parameters or signalings, the terminal device determining that the TCI states of more than one transmission opportunity are all the first TCI state, and the first TCI state is the first TCI state indicated in the DCI signaling. I state, or, determining that the TCI states used for more than one transmission opportunity are all TCI states predefined when the TCI indication field is not included in the DCI signaling; or, the terminal device determines that the TCI state style of more than one transmission opportunity is one of the following: the first TCI state (TCI1), the second TCI state (TCI2), the first TCI state (TCI1), the second TCI state (TCI2); the first TCI state (TCI1), the first TCI state (TCI1), the second TCI state (TCI2), the second TCI state (TCI2).

[0021] According to the tenth aspect of an embodiment of the present invention, a method for determining transmission parameters is provided, which is applied to a terminal device side, and the method includes: the terminal device receives configuration parameters related to URLLC scheme 3, and receives parameters or signaling indicating that the DCI signaling does not contain a TCI domain, or receives DCI signaling that does not contain a TCI indication domain; and the terminal device determines that the scheduled PDSCH has only one transmission opportunity and the TCI state used in the transmission opportunity is a predefined TCI state when the DCI signaling does not contain a TCI indication domain, or the terminal device determines that the scheduled PDSCH has two transmission opportunities, and the TCI states used in the two transmission opportunities are both two predefined TCI states when the DCI signaling does not contain a TCI indication domain.

[0022] According to the eleventh aspect of an embodiment of the present invention, a method for determining transmission parameters is provided, which is applied to a network device side, and the method includes: configuring or indicating at least two TCI state-related parameters or signaling to a terminal device, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the parameters or signaling indicating that the DCI signaling contains the TCI domain; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI domain; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI domain in the at least two TCI state-related parameters or signaling.

[0023] According to the twelfth aspect of an embodiment of the present invention, a computer-readable program is provided, wherein when the program is executed in a transmission parameter determination device or a terminal device, the program causes the transmission parameter determination device or the terminal device to perform the transmission parameter determination method described in any one of the eighth to tenth aspects of the embodiment of the present invention.

[0024] According to the thirteenth aspect of the embodiments of the present invention, a storage medium storing a computer-readable program is provided, wherein the computer-readable program enables the transmission parameter determination device or terminal device to execute the transmission parameter determination method described in any one of the eighth to tenth aspects of the embodiments of the present invention.

[0025] According to the fourteenth aspect of an embodiment of the present invention, a computer-readable program is provided, wherein when the program is executed in a transmission parameter determination device or a network device, the program causes the transmission parameter determination device or the network device to execute the transmission parameter determination method described in the eleventh aspect of an embodiment of the present invention.

[0026] According to the fifteenth aspect of the embodiments of the present invention, a storage medium storing a computer-readable program is provided, wherein the computer-readable program enables the transmission parameter determination device or network device to execute the transmission parameter determination method described in the eleventh aspect of the embodiments of the present invention.

[0027] The beneficial effects of the embodiments of the present invention are: the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style and the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the parameters or signaling indicating that the DCI signaling contains the TCI domain, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style and the DCI signaling that does not contain the TCI domain, or the terminal device determines the TCI state style and the parameters or signaling indicating that the DCI signaling contains the TCI domain, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0028] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby. The embodiments of the present invention encompass numerous variations, modifications, and equivalents within the spirit and scope of the appended claims.

[0029] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0030] It should be emphasized that the terms “include / comprising / having” when used herein refer to the presence of features, integers, steps or components, but do not preclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The elements and features described in one drawing or one embodiment of the present invention may be combined with the elements and features shown in one or more other drawings or embodiments. In addition, in the drawings, similar reference numerals represent corresponding parts in several drawings and can be used to indicate corresponding parts used in more than one embodiment.

[0032] The accompanying drawings are included to provide a further understanding of the embodiments of the present invention, constitute a part of the specification, illustrate the embodiments of the present invention, and together with the written description, explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0033] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of a method for determining transmission parameters according to embodiment 1 of the present invention;

[0035] Figure 3 is a schematic diagram of a method for determining transmission parameters in Example 1 of Embodiment 1 of the present invention;

[0036] Figure 4 is a schematic diagram of a method for determining transmission parameters in Example 2 of Embodiment 1 of the present invention;

[0037] Figure 5 is a schematic diagram of a method for determining transmission parameters in Example 3 of Embodiment 1 of the present invention;

[0038] Figure 6 is a schematic diagram of a method for determining transmission parameters in Example 4 of Embodiment 1 of the present invention;

[0039] Figure 7 is a schematic diagram of a method for determining transmission parameters according to embodiment 2 of the present invention;

[0040] Figure 8 is a schematic diagram of a method for determining transmission parameters according to embodiment 3 of the present invention;

[0041] Figure 9 is a schematic diagram of a method for determining transmission parameters according to embodiment 4 of the present invention;

[0042] Figure 10 is a schematic diagram of a method for determining transmission parameters according to embodiment 5 of the present invention;

[0043] Figure 11 is a schematic diagram of a device for determining transmission parameters according to embodiment 6 of the present invention;

[0044] Figure 12 is a schematic diagram of a device for determining transmission parameters according to embodiment 7 of the present invention;

[0045] Figure 13 is a schematic diagram of a device for determining transmission parameters according to embodiment 8 of the present invention;

[0046] Figure 14 is a schematic diagram of a device for determining transmission parameters according to Embodiment 9 of the present invention;

[0047] Figure 15 is a schematic block diagram of the system structure of a terminal device according to embodiment 10 of the present invention;

[0048] Figure 16 This is a schematic diagram of the structure of the network device of Example 11 of the present invention. DETAILED DESCRIPTION

[0049] The above and other features of the present invention will become apparent from the following description with reference to the accompanying drawings. In the description and drawings, specific embodiments of the present invention are disclosed in detail, which illustrate some embodiments in which the principles of the present invention can be adopted. It should be understood that the present invention is not limited to the described embodiments, but rather includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0050] In the embodiments of the present invention, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0051] In the embodiments of the present invention, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0052] In the embodiments of the present invention, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0053] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR), etc., and / or other currently known or future communication protocols to be developed.

[0054] In the embodiments of the present invention, the term "network device" refers to, for example, a device in a communication system that connects a user equipment to the communication network and provides services for the user equipment. Network devices may include, but are not limited to, base stations (BS), access points (AP), transmission reception points (TRP), broadcast transmitters, mobile management entities (MME), gateways, servers, radio network controllers (RNC), base station controllers (BSC), and the like.

[0055] Base stations may include, but are not limited to, NodeB (NB), evolved NodeB (eNodeB or eNB), and 5G base stations (gNB), among others. They may also include remote radio heads (RRHs), remote radio units (RRUs), relays, or low-power nodes (e.g., femto, pico, etc.). The term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific 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.

[0056] In the embodiments of the present invention, the term "user equipment" (UE) refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be referred to as "terminal equipment" (TE). Terminal equipment may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and so on.

[0057] Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

[0058] For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measurement, such as but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device-to-device (D2D) terminal, machine-to-machine (M2M) terminal, and so on.

[0059] The following describes the scenarios of the embodiments of the present invention by using examples, but the present invention is not limited thereto.

[0060] Figure 1 FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention, which schematically illustrates a situation in which a terminal device and a network device are used as an example. Figure 1 As shown, the communication system 100 may include: a network device 101 and a terminal device 102. For simplicity, Figure 1 Only one terminal device is used as an example for illustration. The network device 101 is, for example, a NR network device gNB, which may include at least one transmission point (TRP).

[0061] In this embodiment of the present invention, existing services or future services can be carried out between the network device 101 and the terminal device 102. 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).

[0062] In an embodiment of the present invention, the communication system can be applied to multiple TRP scenarios.

[0063] In an embodiment of the present invention, when multi-TRP or multi-panel operation is used, the multi-TRP or multi-panel operation related mode can be explicitly configured through high-level signaling, or can be implicitly configured, or can be a scheme involving multiple TRP transmissions.

[0064] For example, multi-TRP or multi-panel operation can be explicitly configured as one or more transmission schemes, such as transmission scheme 2 or 3, NC-JT (non-coherent joint transmission) scheme, and a scheme combined with URLLC repeated transmission (such as SDM, TDM, FDM, SDM and TDM combination, SDM and FDM combination, TDM and FDM combination, SDM, TDM and FDM combination, etc. of the transport block); it is also possible to implicitly indicate that the terminal device can perform multi-TRP or multi-panel operation by configuring certain high-level parameters, such as the number of configured demodulation reference signal port groups (DMRS portgroups), the number of phase tracking reference signal (PTRS, phase tracking reference signal) ports, the number of PDCCHs transmitted simultaneously, TCI state configuration related parameters, the number of CORESET groups, and the high-level parameters configured in the CORESET (for example, parameters related to the HARQ-ACK feedback codebook, with a value of 0 or 1), etc., to implicitly indicate whether the terminal device performs multi-TRP or multi-panel related operations.

[0065] For example, when the number of DMRS port groups (e.g., maximum number) or the number of PTRS ports (e.g., maximum number of ports) or the number of PDCCHs transmitted simultaneously (e.g., maximum number) or the number of CORESET groups (e.g., maximum number of groups) is greater than a threshold value (e.g., 1), or the TCI state configuration related parameters (e.g., TCI state mapping pattern, the maximum number of TCI states contained in a DCI signaling codepoint, etc.) The number of TCI states configured is greater than a threshold value (e.g., 1), or when a higher-layer parameter is configured in the CORESET (parameter ControlResourceSet), for example, a higher-layer parameter HigherLayerIndexPerCORESET or CORESETPoolIndex or other parameter names related to HARQ-ACK feedback, or a higher-layer parameter configured in two or more CORESETs, such as The higher-layer parameters related to HARQ-ACK feedback are different or there are more than one parameters, for example, the HigherLayerIndexPerCORESET or CORESETPoolIndex parameter of one or more CORESETs is configured as 0, and the HigherLayerIndexPerCORESET or CORESETPoolIndex parameter of one or more CORESETs is configured as 1; or the PDCCH-Config parameter contains two different values ​​of HigherLayerIndexPerCORESET or CORESETPoolIndex parameters; the terminal device is determined to be multi-TRP or multi-panel operation; otherwise, the terminal device is determined to be single TRP or single panel operation, or an operation other than multi-TRP or multi-panel operation.

[0066] For another example, multi-TRP or multi-panel operation can also be a scheme involving multiple TRP transmissions, such as coordinated multi-point transmission (CoMP), carrier aggregation (CA), dual connectivity (DC), and so on.

[0067] In an embodiment of the present invention, the communication system can also be applied to URLLC scenarios.

[0068] To improve the reliability and coverage of URLLC services, a transport block can be transmitted repeatedly multiple times. The multiplexing methods between multiple repeated versions can include SDM, TDM, FDM, etc., and can also be a combination of the above multiplexing methods, for example, SDM and TDM combined, SDM and FDM combined, TDM and FDM combined, SDM, TDM and FDM combined, etc. In addition, FDM can be subdivided into different schemes based on the use of the same or different redundancy versions for multiple transport blocks, such as scheme 2a and 2b. TDM can be divided into mini-slot-level repetition and slot-level repetition, such as scheme 3 and scheme 4, based on whether the timing of sending the repeated version is intra-time slot repetition or inter-time slot repetition. RRC signaling can be used to explicitly configure which URLLC scheme to use. For example, different states of an RRC parameter can be used to represent the above multiple URLLC schemes, or different RRC parameters can be used to represent different URLLC schemes. For example, the Rel-15 timeslot-level repetitive transmission parameter pdsch-AggregationFactorc is used to represent scheme 4, or one or more other RRC parameters are used to represent scheme 4. For example, when the parameter URLLCRepNum is configured or the value of this parameter is greater than 1, it means that the terminal device is configured to perform scheme 4 related transmission; for another example, a new RRC parameter (such as URLLCSchemeEnabler) is used to semi-statically indicate at least one of schemes 2a, 2b and 3, etc. For example, schemes 2a, 2b and 3 can respectively indicate that the value of URLLCSchemeEnabler is set to 'FDMSchemeA', 'FDMSchemeB' or 'TDMSchemeA', etc.

[0069] In some cases, the TCI status indication field is not included in the DCI signaling. For example, when the high-level signaling parameter TCI-PresentInDCI configured in the control resource set (CORESET) is in the disabled state, or the high-level parameter defined for the newly defined DCI format 1_2 in Rel-16 (for example, called TCI-PresentInDCI-ForDCIFormat1_2, or other names) is in the disabled state, or the DCI format is 1_0, the DCI signaling does not include the TCI status indication field. Therefore, the terminal device cannot obtain the TCI status of the physical downlink shared channel (PDSCH) through DCI signaling. At this time, the TCI status of the PDSCH is a predefined TCI status, which is the TCI status of the CORESET used for the transmission of the physical downlink control channel (PDCCH) that schedules the PDSCH.

[0070] In Rel-16, when the multi-TRP mechanism is introduced, multiple repeat versions may be sent by multiple TRPs respectively. Therefore, the multiple repeat versions sent by multiple TRPs (i.e., multiple transmission opportunities) have different TCI states. The TCI field in the DCI signaling can be used to indicate the TCI state when multiple TRPs send multiple repeat versions respectively. For example, RRC signaling is used to predefine the TCI mapping style of multiple transmission opportunities.

[0071] For example, when multiple TRPs use up to two TCI states and transmit PDSCH through four transmission opportunities, the TCI mapping pattern can be 1, 1, 2, 2, indicating that the TCI states for the four transmission opportunities are TCI 1, TCI 1, TCI 2, and TCI 2, respectively. Alternatively, the TCI mapping pattern can be 1, 2, 1, 2, indicating that the TCI states for the four transmission opportunities are TCI 1, TCI 2, TCI 1, and TCI 2, respectively. DCI signaling containing the TCI field is then used to indicate the two TCI states, TCI 1 and TCI 2.

[0072] When the DCI signaling does not include the TCI status indication field, there is no clear regulation on how the terminal device determines the TCI status. Therefore, the TCI status of each transmission opportunity determined by the terminal device may be inconsistent with the TCI status used by the network device for downlink transmission, which may lead to transmission failure.

[0073] For example, there is a situation where the TCI status indication field is not included in the DCI signaling. For example, when the high-level signaling parameter TCI-PresentInDCI or TCI-PresentInDCI-ForDCIFormat1_2 is not configured in the control resource set CORESET, or TCI-PresentInDCI or TCI-PresentInDCI-ForDCIFormat1_2 is configured to be disabled (not enabled), or the DCI format is 1_0, the DCI signaling does not include the TCI status indication field. According to the Rel-15 protocol, the terminal device assumes that the TCI status of each transmission opportunity of the PDSCH is a predefined TCI state. In this case, when the TCI status mapping style configured by the RRC signaling includes two TCI states, there will be a situation where the number of TCI states indicated by the two indication methods is inconsistent. In this case, the terminal device may not be able to correctly determine the TCI status of each transmission opportunity, that is, the TCI status determined by the terminal device is inconsistent with the TCI status used by the network device during transmission, which leads to transmission failure.

[0074] In order to solve at least one of the above problems, various implementations of the present invention are described below with reference to the accompanying drawings. These implementations are only exemplary and do not limit the present invention.

[0075] Example 1

[0076] An embodiment of the present invention provides a method for determining transmission parameters, which is applied to a terminal device side.

[0077] In this embodiment, the method includes: receiving at least two TCI state-related parameters or signaling configured or indicated by a network device; and determining transmission parameters of at least one transmission opportunity of a transmission block based on the at least two TCI state-related parameters or signaling.

[0078] Figure 2 FIG. 1 is a schematic diagram of a method for determining transmission parameters according to embodiment 1 of the present invention. Figure 2 As shown, the method includes:

[0079] Step 201: Receive at least two TCI state related parameters or signaling configured or indicated by a network device; and

[0080] Step 202: Determine transmission parameters for at least one transmission opportunity of a transport block based on the parameter or signaling including the TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the parameter or signaling indicating that the DCI signaling does not include the TCI field or the parameter or signaling indicating that the DCI signaling includes the TCI field; or

[0081] Step 203: Determine transmission parameters for at least one transmission opportunity of a transport block based on the parameters or signaling including the TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the DCI signaling not including the TCI field; or

[0082] Step 204: Determine the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state pattern determined by the terminal device and the parameters or signaling indicating that the DCI signaling includes the TCI field in the at least two TCI state-related parameters or signaling.

[0083] In this way, the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style and the DCI signaling that does not contain the TCI field, or the terminal device determines the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0084] In this embodiment, the at least two TCI status-related parameters or signaling received by the terminal device from the network device may include at least two of the following parameters or signaling: parameters or signaling indicating that the TCI domain is included in the DCI signaling; parameters or signaling indicating that the TCI domain is not included in the DCI signaling; related parameters or signaling containing the TCI status mapping style; DCI signaling containing the TCI domain; and DCI signaling not containing the TCI domain.

[0085] In this embodiment, for example, the parameter or signaling indicating that the TCI domain is included in the DCI signaling may be a TCI-PresentInDCI parameter or a TCI-PresentInDCI-ForDCIFormat1_2 parameter. In addition, the TCI-PresentInDCI-ForDCIFormat1_2 parameter is a high-layer parameter defined for the DCI format 1_2 newly defined in Rel-16, and may also be named differently. When the parameter is enabled, it indicates that the TCI domain is included in the DCI signaling. The parameter or signaling indicating that the TCI domain is not included in the DCI signaling may be a TCI-PresentInDCI parameter or a TCI-PresentInDCI-ForDCIFormat1_2 parameter. When the parameter is disabled (not enabled) or not configured, it indicates that the TCI domain is not included in the DCI signaling.

[0086] In this embodiment, the relevant parameters or signaling containing the TCI state mapping pattern may indicate the TCI state pattern of at least one transmission opportunity, and the TCI state pattern may include, for example, at most two TCI states, such as a first TCI state (TCI1) and a second TCI state (TCI2).

[0087] In this embodiment, four transmission opportunities and two TCI states are used as an example for description. However, the embodiment of the present invention does not limit the number of transmission opportunities and the number of TCI states included in the TCI state pattern.

[0088] For example, the relevant parameters or signaling containing the TCI state mapping style can be high-level parameters, such as the RepTCIMapping parameter, or the parameter indicating that the TCI state style is 1212 (that is, the TCI states of the four transmission opportunities are TCI1, TCI2, TCI1, and TCI2 respectively) is CycMapping (1 2 1 2), that is, the style of cyclic mapping of TCI1 and TCI2 states; the parameter indicating that the TCI state style is 1122 (that is, the TCI states of the four transmission opportunities are TCI1, TCI2, TCI1, and TCI2 respectively) is SeqMapping (1 1 2 2), that is, the style of sequential mapping of TCI1 and TCI2 states. When the number of transmission opportunities is greater than 4, for example 8, if the high-level parameter (RepTCIMapping) of the TCI state mapping style is configured as CycMapping (1 2 1 2), it means that the TCI states of the 8 transmission opportunities are 2 CycMapping (1 2 1 2) styles, i.e., 1 2 1 2 1 2 1 2; if the high-level parameter (RepTCIMapping) of the TCI state mapping style is configured as SeqMapping (1 1 2 2), it means that the TCI states of the 8 transmission opportunities are 2 SeqMapping (1 1 2 2) styles, i.e., 1 1 2 2 1 1 2 2.

[0089] In this embodiment, the terminal device receives DCI signaling that may include the TCI domain or may not include the TCI domain. For example, the DCI signaling that includes the TCI domain may be DCI format 1_1 and DCI format 1_2. The DCI signaling that does not include the TCI domain may be DCI format 1_0, DCI format 1_1, and DCI format 1_2. For DCI format 1_1, when the high-level parameter TCI-PresentInDCI is configured or the high-level parameter TCI-PresentInDCI is enabled (enabled), the TCI domain is included in DCI format 1_1. When the high-level parameter TCI-PresentInDCI is not configured or the high-level parameter TCI-PresentInDCI is disabled (not enabled), the TCI domain is not included in DCI format 1_1. Similarly, for DCI format 1_2, when the higher-layer parameter TCI-PresentInDCI-ForDCIFormat1_2 is configured or is enabled, DCI format 1_2 includes the TCI field. When the higher-layer parameter TCI-PresentInDCI-ForDCIFormat1_2 is not configured or is disabled (not enabled), DCI format 1_2 does not include the TCI field. DCI format 1_0 never includes the TCI field.

[0090] In this embodiment, step 202 or step 203 or step 204 determines a transmission parameter of at least one transmission opportunity of a transport block, and the transmission parameter may include at least one of a TCI state and the number of transmission opportunities.

[0091] In this embodiment, the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block, which can also be called that the terminal device assumes the transmission parameters of at least one transmission opportunity of a transmission block.

[0092] The following describes the method for determining the transmission parameters of this embodiment with reference to various specific situations.

[0093] Figure 3 1 is a schematic diagram of a method for determining transmission parameters of Example 1 of Embodiment 1 of the present invention, as shown in FIG. Figure 3 As shown, the method includes:

[0094] Step 301: receiving relevant parameters or signaling including a TCI state mapping pattern, wherein the relevant parameters or signaling including the TCI state mapping pattern configures a TCI state mapping pattern including at most two TCI states, and receiving parameters or signaling indicating that the DCI signaling does not include a TCI field, or receiving DCI signaling that does not include a TCI field; and

[0095] Step 302: The terminal device determines that the TCI state of at least one transmission opportunity is a predefined TCI state; or the terminal device determines that the TCI state of at least one transmission opportunity is one of two predefined TCI states; or the terminal device determines that the configuration of the network device is an error.

[0096] In step 301, on the one hand, the received relevant parameters or signaling containing the TCI state mapping style configure a TCI state mapping style containing at most two TCI states, and on the other hand, parameters or signaling indicating that the DCI signaling does not contain the TCI domain or DCI signaling that does not contain the TCI domain (for example, DCI format 1_0) is received. That is, according to the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the DCI signaling that does not contain the TCI domain, the TCI state configured by the relevant parameters or signaling containing the TCI state mapping style cannot be correctly and dynamically indicated.

[0097] In step 302, the terminal device may determine that the TCI state of at least one transmission opportunity is a predefined TCI state.

[0098] In this embodiment, the predefined TCI state is a predefined TCI state when the terminal device receives parameters or signaling indicating that the DCI signaling does not contain a TCI domain, or receives DCI signaling that does not contain a TCI domain.

[0099] That is, the terminal device determines the TCI state of at least one transmission opportunity based on the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the DCI signaling does not contain the TCI domain. The TCI state is, for example, the TCI state of the CORESET used for the PDCCH transmission of the scheduled PDSCH.

[0100] Or, that is, if the relevant parameters or signaling containing the TCI state mapping style configure a TCI state mapping style containing two TCI states, the terminal device determines that the first TCI state and the second TCI state configured in the relevant parameters or signaling containing the TCI state mapping style are both predefined TCI states.

[0101] In this way, when the TCI state in the TCI state mapping style configured with relevant parameters of the TCI state mapping style cannot be determined based on the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the DCI signaling (DCI format 1_0) that does not contain the TCI domain, both the terminal device and the network device believe that the TCI state is determined based on the parameters or signaling indicating that the DCI signaling does not contain the TCI domain or the DCI signaling (DCI format 1_0) that does not contain the TCI domain, that is, the network device and the terminal device have a consistent understanding of the determination of the TCI state, ensuring correct PDSCH transmission.

[0102] In step 302, the terminal device may also determine that the TCI state of at least one transmission opportunity is one of two predefined TCI states.

[0103] In this embodiment, the two predefined TCI states may be: two TCI states of a CORESET used for PDCCH transmission scheduling a PDSCH.

[0104] For example, the two TCI states of the CORESET used for the PDCCH transmission of the scheduled PDSCH are: two activated TCI states of the CORESET, or one activated TCI state and one configured but not activated TCI state of the CORESET.

[0105] In this embodiment, the two predefined TCI states may also be: one TCI state is the activated TCI state of the CORESET used for the PDCCH transmission of the PDSCH, and the other TCI state is a TCI state of the CORESET used for the PDCCH transmission of the scheduled PDSCH or a TCI state of a CORESET to be monitored other than the CORESET used for the PDCCH transmission of the scheduled PDSCH.

[0106] In this embodiment, the one TCI state corresponds to the first TCI state, and may also correspond to the second TCI state, or may correspond to the first TCI state configured in the TCI mapping style, and may also correspond to the second TCI state configured in the TCI mapping style.

[0107] For example, the TCI state of the CORESET to be monitored other than the CORESET used for the PDCCH transmission of the scheduled PDSCH is: the activated TCI state of the CORESET with the lowest CORESET ID among the CORESETs to be monitored, or the activated TCI state of the CORESET with the lowest number among the CORESETs to be monitored that has different HARQ-ACK feedback codebook-related high-level parameters or different high-level parameters from the CORESET used for the PDCCH transmission of the scheduled PDSCH.

[0108] In this embodiment, the two predefined TCI states may also be: the TCI state of the CORESET to be monitored with the lowest number in the two CORESET groups; or the TCI state pair with the lowest number in the TCI state activated by the PDSCH.

[0109] In this embodiment, for example, the configuration of each CORESET includes a higher-layer parameter related to the HARQ-ACK feedback codebook, which can take a value of 0 or 1. Based on the value of this higher-layer parameter related to the HARQ-ACK feedback codebook, the CORESETs can be implicitly divided into two groups: for example, CORESETs with all values ​​0 form one group, and CORESETs with all values ​​1 form another group. Typically, these two CORESET groups are associated with different TRPs, and each TRP sends control information only within the CORESET with which it is associated.

[0110] In this embodiment, the CORESET to be monitored may refer to a CORESET configured with a search space (set) to be monitored.

[0111] In this embodiment, two predefined TCI states can be applied to at least one transmission opportunity according to a TCI state mapping style (such as TCI 1 1 2 2 or TCI 1 2 1 2) configured or indicated by relevant parameters or signaling of the TCI state mapping style, and the two predefined TCI states correspond to TCI1 and TCI2 in the TCI state mapping style, respectively.

[0112] In this embodiment, the lowest-numbered TCI state pair among the TCI states activated for the PDSCH is the lowest-numbered combination among up to 8 or 16 TCI state combinations activated for the PDSCH. For example, MAC-CE signaling may be used to activate up to 8 or 16 TCI state combinations for the PDSCH. For example, 8 combinations are used, each of which includes one or two TCI states, and two TCI states constitute a TCI state pair. The numbering may be the numbering of the 8 combinations, or other numbering forms, such as a TCI state group number or a TCI state pair number, which is not limited in this embodiment of the present invention.

[0113] Likewise, both the network device and the terminal device have a consistent understanding of the determination of the TCI status to ensure correct PDSCH transmission.

[0114] In step 302, the terminal device may also determine that the configuration of the network device is incorrect.

[0115] In this embodiment, the error condition may include: in at least one of the following conditions, the terminal device does not want the DCI signaling to not include the TCI indication field:

[0116] The number of TCI states configured in the parameters or signaling containing the TCI state mapping pattern is greater than 1;

[0117] The TCI state pattern configured in the relevant parameters or signaling including the TCI state mapping pattern is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2); and

[0118] RRC configures the terminal device to perform a multi-TRP transmission scheme, or at least one of URLLC transmission schemes 1a, 2a, 2b, 3 and 4, or the HARQ-ACK codebook related parameters are configured in the CORESET and the parameter value of all CORESETs configured with the parameter is one of 0 or 1.

[0119] In this way, the terminal device does not expect the above situation to occur. That is, the network device will use the above configuration during communication to ensure that the TCI state configured according to the relevant parameters or signaling containing the TCI state mapping pattern is consistent with the parameters or signaling indicating that the DCI signaling does not contain a TCI field. In this way, regardless of which TCI state-related parameters are used by the terminal device, the TCI state determined is the same, and the TCI state of the PDSCH determined by both the network device and the terminal device is also consistent.

[0120] Figure 4 : is a schematic diagram of a method for determining transmission parameters of Example 2 of Embodiment 1 of the present invention, as shown in FIG. Figure 4 As shown, the method includes:

[0121] Step 401: Receive a parameter or signaling indicating that the DCI signaling includes a TCI field, a parameter or signaling indicating that the DCI signaling does not include a TCI field, at least two TCI state-related parameters or signaling among DCI signaling including the TCI field and DCI signaling not including the TCI field; and

[0122] Step 402: The terminal device determines that the TCI states of more than one transmission opportunity are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or determines that the TCI states used in more than one transmission opportunity are all a TCI state predefined when the DCI signaling does not include a TCI indication field; or

[0123] Step 403: The terminal device determines that the TCI state pattern of one or more transmission opportunities is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0124] In this way, when the TCI field in the DCI signaling indicates more than one TCI state, but the RRC signaling does not configure the TCI state mapping style, by defining the default terminal device behavior, the TCI state used for each transmission opportunity can be determined for the terminal device, so that both the network device and the terminal device have a consistent understanding of the TCI state used, thereby ensuring correct PDSCH transmission.

[0125] Figure 5 is a schematic diagram of a method for determining transmission parameters of Example 3 of Embodiment 1 of the present invention, as shown in FIG. Figure 5 As shown, the method includes:

[0126] Step 501: Receive a parameter or signaling indicating that a TCI field is included in DCI signaling, or receive DCI signaling including a TCI field;

[0127] Step 502: The terminal device does not want the TCI field in the DCI signaling to indicate more than one TCI state; or,

[0128] Step 503: The terminal device does not want the TCI field in the DCI signaling to indicate only one TCI state.

[0129] In step 502, for the situation of step 402, that is, the terminal device determines that the TCI states of more than one transmission opportunities are all the first TCI state, and the first TCI state is the first TCI state indicated in the DCI signaling, or, when it is determined that the TCI states used for more than one transmission opportunities are all a TCI state predefined when the DCI signaling does not contain a TCI indication field, the terminal device does not want the TCI field in the DCI signaling to indicate more than one TCI state, so as to avoid conflicts between the terminal device behavior determined by the DCI signaling and the higher-layer signaling.

[0130] In step 503, for the situation of step 403, that is, the terminal device determines that the TCI state style of more than one transmission opportunity is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2), the terminal device does not want the TCI field in the DCI signaling to indicate only one TCI state, so as to avoid inconsistency between the number of TCI states indicated by the DCI signaling and the number of TCI states determined by the higher-layer signaling.

[0131] In this way, the situation where the default behavior of the terminal device when the relevant parameters or signaling containing the TCI state mapping style are not configured is inconsistent with the number of TCI states indicated by the TCI field in the DCI signaling is avoided. In this way, the TCI state determined by the terminal device according to multiple TCI-related configurations or indications is consistent, which can ensure that both the network device and the terminal device have a consistent understanding of the TCI state used, thereby ensuring correct PDSCH transmission.

[0132] Figure 6 1 is a schematic diagram of a method for determining transmission parameters of Example 4 of Embodiment 1 of the present invention. Figure 6 As shown, the method includes:

[0133] Step 601: Receive relevant parameters or signaling including a TCI state mapping pattern and DCI signaling including a TCI field, wherein the relevant parameters or signaling including the TCI state mapping pattern indicates more than one TCI state, and the TCI field in the DCI signaling indicates one TCI state;

[0134] Step 602: The terminal device determines that the TCI state indicated by the TCI field in the DCI signaling is used for at least one transmission opportunity.

[0135] In this way, the terminal device can avoid determining the current TCI state by itself, thereby avoiding the inconsistency between the TCI state determined by the terminal device and the TCI state used by the network device, thereby ensuring correct PDSCH transmission.

[0136] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or based on the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0137] Example 2

[0138] An embodiment of the present invention provides a method for determining transmission parameters, which is applied to a terminal device side.

[0139] Figure 7 FIG. 1 is a schematic diagram of a method for determining transmission parameters according to embodiment 2 of the present invention. Figure 7 As shown, the method includes:

[0140] Step 701: The terminal device receives URLLC scheme 4 related configuration parameters, but does not receive related parameters or signaling including TCI state mapping pattern;

[0141] Step 702: The terminal device determines that the TCI states of more than one transmission opportunity are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or determines that the TCI states used in more than one transmission opportunity are all a TCI state predefined when the DCI signaling does not include a TCI indication field; or

[0142] Step 703: The terminal device determines that the TCI state pattern of one or more transmission opportunities is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0143] In this way, when the TCI field in the DCI signaling indicates more than one TCI state, but the RRC signaling does not configure the TCI state mapping style, by defining the default terminal device behavior, the TCI state used for each transmission opportunity can be determined for the terminal device, so that both the network device and the terminal device have a consistent understanding of the TCI state used, thereby ensuring correct PDSCH transmission.

[0144] In this example, the method may further include, when adopting step 702, the terminal device does not want the TCI field in the DCI signaling to indicate more than one TCI state or the terminal device wants the TCI field in the DCI signaling to indicate one TCI state, thereby avoiding the situation where the TCI state determined by the terminal device based on not receiving relevant parameters or signaling containing the TCI state mapping style is inconsistent with the TCI state determined based on the TCI field in the DCI signaling.

[0145] In this embodiment, the method may further include, the terminal device determining that the TCI state indicated by the TCI field in the DCI signaling is applied to at least one transmission opportunity.

[0146] In this embodiment, the method may further include that, when adopting step 703, the terminal device does not want the TCI field in the DCI signaling to indicate only one TCI state, so as to avoid the situation where the TCI state determined by the terminal device based on not receiving relevant parameters or signaling containing the TCI state mapping style is inconsistent with the TCI state determined based on the TCI field in the DCI signaling.

[0147] Example 3

[0148] An embodiment of the present invention provides a method for determining transmission parameters, which is applied to a terminal device side.

[0149] Figure 8 FIG. 1 is a schematic diagram of a method for determining transmission parameters according to embodiment 3 of the present invention. Figure 8 As shown, the method includes:

[0150] Step 801: The terminal device receives configuration parameters related to URLLC scheme 3, and receives parameters or signaling indicating that the DCI signaling does not include a TCI field, or receives DCI signaling that does not include a TCI indication field; and

[0151] Step 802: The terminal device determines that the scheduled PDSCH has only one transmission opportunity and the TCI state used in the transmission opportunity is a TCI state predefined when the DCI signaling does not include a TCI indication field, or,

[0152] Step 803: The terminal device determines that the scheduled PDSCH has two transmission opportunities, and the TCI states used in the two transmission opportunities are both TCI states predefined when the DCI signaling does not include a TCI indication field, or,

[0153] Step 804: The terminal device determines that the scheduled PDSCH has two transmission opportunities, and the TCI states used in the two transmission opportunities are both two predefined TCI states when the DCI signaling does not include the TCI indication field.

[0154] In this embodiment, the parameter or signaling indicating that the DCI signaling does not include the TCI domain can be a TCI-PresentInDCI parameter or a TCI-PresentInDCI-ForDCIFormat1_2 parameter. When the parameter is disabled (not enabled) or not configured, it indicates that the DCI signaling does not include the TCI domain.

[0155] In this embodiment, the DCI signaling not including the TCI field may be DCI format 1_0, DCI format 1_1 not including the TCI field, or DCI format 1_2 not including the TCI field.

[0156] In this embodiment, the two predefined TCI states can be two TCI states of the CORESET used for PDCCH transmission of the scheduled PDSCH; or, one TCI state is the activated TCI state of the CORESET used for PDCCH transmission of the PDSCH, and the other TCI state is the TCI state of a CORESET to be monitored other than the CORESET used for PDCCH transmission of the scheduled PDSCH; or, the TCI state of the CORESET to be monitored with the lowest number in the two CORESET groups; or, the TCI state pair with the lowest number in the TCI state of the activated PDSCH.

[0157] For example, the two TCI states of the CORESET used for the PDCCH transmission of the scheduled PDSCH are: two activated TCI states of the CORESET, or one activated TCI state and one configured but not activated TCI state of the CORESET.

[0158] For example, the TCI state of the CORESET to be monitored other than the CORESET used for the PDCCH transmission of the scheduled PDSCH is: the activated TCI state of the CORESET with the lowest CORESET ID among the CORESETs to be monitored, or the activated TCI state of the CORESET with the lowest number among the CORESETs to be monitored that has a different HARQ-ACK feedback codebook (codebook) related high-layer parameter from the CORESET used for the PDCCH transmission of the scheduled PDSCH.

[0159] In this way, for URLLC scheme 3, the terminal device can avoid determining the current TCI state and number of transmission opportunities on its own, thereby ensuring that both the network device and the terminal device have a consistent understanding of the number of transmission opportunities and TCI state used for transmission, thereby ensuring correct PDSCH transmission.

[0160] Example 4

[0161] An embodiment of the present invention further provides a method for determining transmission parameters, which is applied to the network device side and corresponds to Example 1. Therefore, its specific implementation can refer to the description in Example 1, and the same content will not be repeated.

[0162] Figure 9 FIG. 4 is a schematic diagram of a method for determining transmission parameters according to embodiment 4 of the present invention. Figure 9 As shown, the method includes:

[0163] Step 901: Configure or indicate at least two TCI state-related parameters or signaling to the terminal device, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field in the at least two TCI state-related parameters or signaling.

[0164] In this embodiment, the TCI state-related parameters or signaling may include at least two of the following parameters or signaling: parameters or signaling indicating that the TCI domain is included in the DCI signaling; parameters or signaling indicating that the TCI domain is not included in the DCI signaling; related parameters or signaling containing the TCI state mapping style; DCI signaling containing the TCI domain; and DCI signaling not containing the TCI domain.

[0165] In this embodiment, the transmission parameter may include at least one of a TCI state and a number of transmission opportunities.

[0166] For example, the TCI state-related parameters or signaling configured or indicated by the network device include: relevant parameters or signaling containing a TCI state mapping style and DCI signaling containing a TCI domain, and the number of TCI states indicated by the relevant parameters or signaling containing a TCI state mapping style is consistent with the number of TCI states indicated by the TCI domain in the DCI signaling.

[0167] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the DCI signaling that does not contain the TCI field, or the terminal device determines the TCI state style and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0168] Example 5

[0169] An embodiment of the present invention also provides a method for determining transmission parameters, which is applied to the terminal device side and the network device side, corresponding to embodiments 1 and 4. Therefore, its specific implementation can refer to the records in embodiments 1 and 4, and the same content will not be repeated.

[0170] Figure 10 FIG. 1 is a schematic diagram of a method for determining transmission parameters according to embodiment 5 of the present invention. Figure 10 As shown, the method includes:

[0171] Step 1001: The network device configures or indicates at least two TCI state-related parameters or signaling to the terminal device;

[0172] Step 1002: The terminal device determines the transmission parameters of at least one transmission opportunity of a transport block based on the relevant parameters or signaling including the TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not include the TCI field or the parameters or signaling indicating that the DCI signaling includes the TCI field; or

[0173] Step 1003: The terminal device determines the transmission parameters of at least one transmission opportunity of a transport block based on the relevant parameters or signaling including the TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the DCI signaling not including the TCI field; or

[0174] Step 1004: The terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state pattern determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field in the at least two TCI state-related parameters or signaling.

[0175] In this embodiment, the specific implementation methods of steps 1001 to 1004 are the same as those described in Example 1 and Example 4, and will not be repeated here.

[0176] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the DCI signaling that does not contain the TCI field, or the terminal device determines the TCI state style and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0177] Example 6

[0178] The embodiment of the present invention provides a device for determining transmission parameters, which is configured on the terminal device side. Since the principle of solving the problem of this device is similar to that of the method described in Example 1, its specific implementation can refer to the implementation of the method described in Example 1, and the same or related parts will not be repeated here.

[0179] Figure 11 FIG. 1 is a schematic diagram of a device for determining transmission parameters according to embodiment 6 of the present invention. Figure 11 As shown, the apparatus 1100 includes:

[0180] A first receiving unit 1101 is configured to receive at least two TCI state-related parameters or signaling configured or indicated by a network device; and

[0181] The first determination unit 1102 is used to determine the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field; or, determine the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field; or, determine the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field in the at least two TCI state-related parameters or signaling.

[0182] In addition, the first receiving unit receives a parameter or signaling indicating that the DCI signaling includes a TCI field, a parameter or signaling indicating that the DCI signaling does not include a TCI field, DCI signaling including the TCI field, and at least two TCI state-related parameters or signaling in the DCI signaling not including the TCI field.

[0183] The device may also include: a second determination unit, which is used to determine that the TCI states of more than one transmission opportunities are all the first TCI state, and the first TCI state is the first TCI state indicated in the DCI signaling, or, determining that the TCI states used for more than one transmission opportunities are all a TCI state predefined when the DCI signaling does not include a TCI indication field; or, a third determination unit, which is used to determine that the TCI state style of more than one transmission opportunity is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0184] In this embodiment, the implementation of the functions of the above-mentioned units can refer to the contents of the relevant steps in Example 1, and will not be repeated here.

[0185] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0186] Example 7

[0187] This embodiment of the present invention provides a device for determining transmission parameters, which can be configured on a terminal device. Since the principle of solving the problem is similar to that of Example 2, its specific implementation can refer to the implementation of the method described in Example 2, and the same or related parts will not be repeated here.

[0188] Figure 12 FIG. 1 is a schematic diagram of a device for determining transmission parameters according to embodiment 7 of the present invention. Figure 12 As shown, the apparatus 1200 includes:

[0189] The second receiving unit 1201 is configured to receive a parameter or signaling indicating that the TCI field is included in the DCI signaling, a parameter or signaling indicating that the TCI field is not included in the DCI signaling, at least two TCI state-related parameters or signaling among the DCI signaling including the TCI field and the DCI signaling not including the TCI field;

[0190] The fourth determining unit 1202 is configured to determine that the TCI states of the one or more transmission opportunities are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or to determine that the TCI states used in the one or more transmission opportunities are all TCI states predefined when the DCI signaling does not include a TCI indication field; or

[0191] The fifth determination unit 1203 is used to determine that the TCI state pattern of more than one transmission opportunity is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0192] In this embodiment, the implementation of the functions of the above-mentioned units can refer to the contents of the relevant steps in Example 2, and will not be repeated here.

[0193] In this way, when the TCI field in the DCI signaling indicates more than one TCI state, but the RRC signaling does not configure the TCI state mapping style, by defining the default terminal device behavior, the TCI state used for each transmission opportunity can be determined for the terminal device, so that both the network device and the terminal device have a consistent understanding of the TCI state used, thereby ensuring correct PDSCH transmission.

[0194] Example 8

[0195] This embodiment of the present invention provides a device for determining transmission parameters, which can be configured on a terminal device. Because the principle of solving the problem is similar to that of Example 3, its specific implementation can refer to the implementation of the method described in Example 3, and the same or related parts will not be repeated here.

[0196] Figure 13 FIG. 1 is a schematic diagram of a device for determining transmission parameters according to an eighth embodiment of the present invention. Figure 13 As shown, the apparatus 1300 includes:

[0197] The third receiving unit 1301 is configured to receive configuration parameters related to URLLC scheme 3, and receive parameters or signaling indicating that the DCI signaling does not include a TCI field, or receive DCI signaling that does not include a TCI indication field; and

[0198] The sixth determining unit 1302 is configured to determine that the scheduled PDSCH has only one transmission opportunity and the TCI state used in the transmission opportunity is a TCI state predefined when the DCI signaling does not include a TCI indication field, or,

[0199] The seventh determining unit 1303 is configured to determine that the scheduled PDSCH has two transmission opportunities, and the TCI states used in the two transmission opportunities are both TCI states predefined when the DCI signaling does not include a TCI indication field, or,

[0200] The eighth determining unit 1304 is configured to determine that the scheduled PDSCH has two transmission opportunities, and the TCI states used in the two transmission opportunities are both two predefined TCI states when the DCI signaling does not include the TCI indication field.

[0201] In this embodiment, the implementation of the functions of the above-mentioned units can refer to the contents of the relevant steps in Example 3, and will not be repeated here.

[0202] In this way, for URLLC scheme 3, the terminal device can avoid determining the current TCI state and number of transmission opportunities on its own, thereby ensuring that both the network device and the terminal device have a consistent understanding of the number of transmission opportunities and TCI state used for transmission, thereby ensuring correct PDSCH transmission.

[0203] Example 9

[0204] This embodiment of the present invention provides a device for determining transmission parameters, which can be configured on a network device. Because the principle of solving the problem is similar to that of Example 4, its specific implementation can refer to the implementation of the method described in Example 4, and the same or related parts will not be repeated here.

[0205] Figure 14 FIG. 1 is a schematic diagram of a device for determining transmission parameters according to Embodiment 9 of the present invention. Figure 14 As shown, the apparatus 1400 includes:

[0206] The first sending unit 1401 is used to configure or indicate at least two TCI state-related parameters or signaling to the terminal device, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field in the at least two TCI state-related parameters or signaling.

[0207] In this embodiment, the implementation of the functions of the above-mentioned units can refer to the contents of the relevant steps in Example 4, and will not be repeated here.

[0208] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0209] Example 10

[0210] An embodiment of the present invention provides a terminal device, which includes a transmission parameter determination device as described in Example 6, Example 7, or Example 8.

[0211] Figure 15 FIG. 1 is a schematic block diagram of the system structure of the terminal device according to the tenth embodiment of the present invention. Figure 15 As shown, terminal device 1500 may include a processor 1510 and a memory 1520; the memory 1520 is coupled to the processor 1510. It should be noted that this figure is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0212] In one embodiment, the functionality of the transmission parameter determination apparatus may be integrated into the processor 1510. The processor 1510 may be configured to: receive at least two TCI state-related parameters or signaling configured or indicated by a network device; and determine, based on the parameters or signaling including a TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not include a TCI field or the parameters or signaling indicating that the DCI signaling includes a TCI field; or, determine, based on the parameters or signaling including a TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the DCI signaling not including a TCI field; or, determine, based on the TCI state pattern determined by a terminal device and the parameters or signaling indicating that the DCI signaling includes a TCI field, among the at least two TCI state-related parameters or signaling.

[0213] Alternatively, the processor 1510 may be configured to: receive a parameter or signaling indicating that the DCI signaling includes a TCI domain, a parameter or signaling indicating that the DCI signaling does not include a TCI domain, DCI signaling including a TCI domain, and at least two TCI state-related parameters or signaling in the DCI signaling not including the TCI domain, and determine that the TCI states of more than one transmission opportunity are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or determine that the TCI states used for more than one transmission opportunity are all a TCI state predefined when the DCI signaling does not include a TCI indication domain; or determine that the TCI state style of more than one transmission opportunity is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0214] Alternatively, the processor 1510 can be configured to: receive URLLC scheme 3 related configuration parameters, and receive parameters or signaling indicating that the DCI signaling does not include the TCI domain or receive DCI signaling that does not include the TCI indication domain; and determine that the scheduled PDSCH has only one transmission opportunity and the TCI state used for the transmission opportunity is the TCI state predefined when the DCI signaling does not include the TCI indication domain, or, determine that the scheduled PDSCH has two transmission opportunities, and the TCI states used for the two transmission opportunities are both TCI states predefined when the DCI signaling does not include the TCI indication domain, or, determine that the scheduled PDSCH has two transmission opportunities, and the TCI states used for the two transmission opportunities are both two predefined TCI states when the DCI signaling does not include the TCI indication domain.

[0215] In another embodiment, the transmission parameter determination device can be configured separately from the processor 1510. For example, the transmission parameter determination device can be configured as a chip connected to the processor 1510, and the function of the transmission parameter determination device is realized through the control of the processor 1510.

[0216] like Figure 15 As shown, the terminal device 1500 may further include: a communication module 1530, an input unit 1540, a display 1550, and a power supply 1560. It is worth noting that the terminal device 1500 does not necessarily have to include Figure 15 In addition, the terminal device 1500 may also include Figure 15 For components not shown, reference may be made to related art.

[0217] like Figure 15As shown, the processor 1510 is sometimes also referred to as a controller or operation control, and may include a microprocessor or other processor device and / or logic device. The processor 1510 receives input and controls the operation of various components of the terminal device 1500.

[0218] Memory 1520 may be, for example, one or more of a cache, flash memory, a hard drive, removable media, volatile memory, non-volatile memory, or other suitable devices. It may store various data and may also store programs for executing related information. Processor 1510 may execute the programs stored in memory 1520 to implement information storage or processing. The functions of other components are similar to those of existing devices and are not further described here. Each component of terminal device 1500 may be implemented using dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the present invention.

[0219] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0220] Example 11

[0221] An embodiment of the present invention provides a network device, which includes the transmission parameter determination device as described in Example 9.

[0222] Figure 16 FIG. 1 is a schematic diagram of a network device according to embodiment 11 of the present invention. Figure 16 As shown, network device 1600 may include: a processor 1610 and a memory 1620; the memory 1620 is coupled to the processor 1610. The memory 1620 may store various data; in addition, the memory 1620 may store an information processing program 1630, and the program 1630 is executed under the control of the processor 1610 to receive various information sent by the terminal device and send various information to the terminal device.

[0223] In one embodiment, the functionality of the transmission parameter determination apparatus may be integrated into the processor 1610. The processor 1610 may be configured to: configure or indicate at least two TCI state-related parameters or signaling to a terminal device, so that the terminal device determines transmission parameters for at least one transmission opportunity of a transport block based on the parameters or signaling including the TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not include the TCI field or the parameters or signaling indicating that the DCI signaling includes the TCI field; or, so that the terminal device determines transmission parameters for at least one transmission opportunity of a transport block based on the parameters or signaling including the TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the DCI signaling not including the TCI field; or, so that the terminal device determines transmission parameters for at least one transmission opportunity of a transport block based on the TCI state pattern determined by the terminal device and the parameters or signaling indicating that the DCI signaling includes the TCI field among the at least two TCI state-related parameters or signaling.

[0224] In another embodiment, the transmission parameter determination device can be configured separately from the processor 1610. For example, the transmission parameter determination device can be configured as a chip connected to the processor 1610, and the function of the transmission parameter determination device is realized through the control of the processor 1610.

[0225] In addition, if Figure 16 As shown, the network device 1600 may also include: a transceiver 1640 and an antenna 1650, etc.; wherein, the functions of the above components are similar to those of the prior art and are not described here. It is worth noting that the network device 1600 does not necessarily have to include Figure 16 In addition, the network device 1600 may also include Figure 16 For components not shown, reference may be made to the prior art.

[0226] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0227] Example 12

[0228] An embodiment of the present invention provides a communication system, including the terminal device as described in Example 10 and / or the network device as described in Example 11.

[0229] For example, the structure of the communication system can refer to Figure 1 ,like Figure 1 As shown, the communication system 100 includes a network device 101 and a terminal device 102. The terminal device 102 is the same as the terminal device recorded in Example 10, and the network device 101 is the same as the network device recorded in Example 11. The repeated contents will not be repeated.

[0230] It can be seen from the above embodiments that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style configured or indicated by the network device and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field, or the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field, so that the TCI state determined by the terminal device is consistent with the TCI state used by the network device for downlink transmission, thereby ensuring the correctness of PDSCH transmission.

[0231] The above-described apparatus and methods of the present invention can be implemented by hardware or by a combination of hardware and software. The present invention relates to a computer-readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to implement the various methods or steps described above. Logic components include, for example, field programmable logic components, microprocessors, and processors used in computers. The present invention also relates to storage media for storing the above-described programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, and the like.

[0232] The methods / devices described in conjunction with the embodiments of the present invention may be directly embodied as hardware, software modules executed by a processor, or a combination of the two. Figure 11 One or more of the functional block diagrams shown in and / or one or more combinations of functional block diagrams may correspond to various software modules of a computer program flow or to various hardware modules. These software modules may correspond to Figure 2 These hardware modules can be implemented by solidifying these software modules using, for example, a field programmable gate array (FPGA).

[0233] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part 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 that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a 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.

[0234] For attached Figure 11 One or more of the functional blocks described in the present invention and / or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any appropriate combination thereof for performing the functions described in the present invention. Figure 11One or more of the described functional blocks and / or one or more combinations of functional blocks may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0235] The present invention has been described above with reference to specific embodiments. However, it should be clear to those skilled in the art that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present invention. Those skilled in the art may make various modifications and variations to the present invention based on the spirit and principles of the present invention, and such modifications and variations are also within the scope of the present invention.

[0236] According to various implementations disclosed in the embodiments of the present invention, the following notes are also disclosed:

[0237] Note 1:

[0238] 1. A method for determining transmission parameters, the method being applied to a terminal device, the method comprising:

[0239] receiving at least two TCI state-related parameters or signaling configured or indicated by the network device; and

[0240] Determine, based on the at least two TCI state-related parameters or signaling, a transmission parameter of at least one transmission opportunity of a transport block.

[0241] 2. The method according to Note 1, wherein the TCI status-related parameters or signaling include at least two of the following parameters or signaling:

[0242] Parameters or signaling indicating that the DCI signaling contains the TCI field;

[0243] Parameters or signaling indicating that the DCI signaling does not include the TCI field;

[0244] Contains relevant parameters or signaling of the TCI state mapping style;

[0245] DCI signaling including the TCI field; and

[0246] DCI signaling does not include the TCI field.

[0247] 3. The method according to Note 1 or 2, wherein:

[0248] The transmission parameter includes at least one of a TCI state and a number of transmission opportunities.

[0249] 4. The method according to any one of Notes 1 to 3, wherein:

[0250] The receiving at least two TCI state related parameters or signaling configured or indicated by the network device includes: receiving relevant parameters or signaling including a TCI state mapping pattern, and parameters or signaling indicating that the DCI signaling does not include a TCI field or DCI signaling does not include a TCI field,

[0251] The determining, based on the at least two TCI state-related parameters or signaling, transmission parameters of at least one transmission opportunity of a transport block includes: determining, based on parameters or signaling related to a TCI state mapping pattern, parameters or signaling indicating that DCI signaling does not include a TCI field, and / or DCI signaling that does not include a TCI field, transmission parameters of at least one transmission opportunity of a transport block;

[0252] or,

[0253] The receiving at least two TCI state-related parameters or signaling configured or indicated by the network device includes: receiving a parameter or signaling indicating that the DCI signaling includes a TCI field, a parameter or signaling indicating that the DCI signaling does not include a TCI field, and at least two TCI state-related parameters or signaling among DCI signaling including the TCI field and DCI signaling not including the TCI field.

[0254] The determining, based on the at least two TCI state-related parameters or signaling, transmission parameters of at least one transmission opportunity of a transport block includes: the terminal device determining a TCI state pattern;

[0255] or,

[0256] The receiving at least two TCI state related parameters or signaling configured or indicated by the network device includes: receiving related parameters or signaling including a TCI state mapping pattern and DCI signaling including a TCI field,

[0257] The determining of the transmission parameters of at least one transmission opportunity of a transport block based on the at least two TCI state-related parameters or signaling includes: determining the transmission parameters of at least one transmission opportunity of a transport block based on relevant parameters or signaling containing a TCI state mapping style, and parameters or signaling indicating that the DCI signaling contains a TCI field and / or DCI signaling containing a TCI field.

[0258] 5. The method according to any one of Notes 1 to 4, wherein the receiving at least two TCI state-related parameters or signaling configured or indicated by the network device includes:

[0259] receiving relevant parameters or signaling including a TCI state mapping pattern, wherein the relevant parameters or signaling including the TCI state mapping pattern configure a TCI state mapping pattern including at most two TCI states, and receiving parameters or signaling indicating that the DCI signaling does not include a TCI field, or receiving DCI signaling that does not include a TCI field,

[0260] The determining, based on the at least two TCI state-related parameters or signaling, a transmission parameter of at least one transmission opportunity of a transport block includes:

[0261] The terminal device determines that the TCI state of at least one transmission opportunity is a predefined TCI state; or the terminal device determines that the TCI state of at least one transmission opportunity is one of two predefined TCI states; or the terminal device determines that the configuration of the network device is an error.

[0262] 6. The method according to Note 5, wherein the predefined TCI state is a predefined TCI state when the terminal device receives parameters or signaling indicating that the DCI signaling does not contain a TCI domain, or receives DCI signaling that does not contain a TCI domain.

[0263] 7. The method according to Note 5, wherein the two predefined TCI states are:

[0264] The two TCI states of the CORESET used for PDCCH transmission of scheduled PDSCH; or,

[0265] One TCI state is the activated TCI state of the CORESET used for PDCCH transmission of PDSCH, and the other TCI state is the TCI state of a CORESET to be monitored other than the CORESET used for PDCCH transmission of scheduling PDSCH; or,

[0266] The TCI status of the lowest numbered monitored CORESET in the 2 CORESET group; or,

[0267] The TCI state pair with the lowest number among the TCI states for PDSCH activation.

[0268] 8. The method according to Note 7, wherein the two TCI states of the CORESET used for the PDCCH transmission of the scheduled PDSCH are:

[0269] 2 activated TCI states of the CORESET, or,

[0270] 1 activated TCI state and 1 configured but not activated TCI state of the CORESET.

[0271] 9. The method according to Note 7, wherein the TCI status of the CORESET to be monitored other than the CORESET used for PDCCH transmission of the scheduled PDSCH is:

[0272] The activated TCI status of the CORESET with the lowest CORESET ID among the CORESETs to be monitored, or,

[0273] The activated TCI state of the lowest-numbered CORESET among the monitored CORESETs that have different higher layer parameters from the CORESET used for PDCCH transmission that schedules the PDSCH.

[0274] 10. The method according to Note 5, wherein the error condition includes:

[0275] In at least one of the following situations, the terminal device does not want the DCI signaling to not include the TCI indication field:

[0276] The number of TCI states configured in the relevant parameters or signaling containing the TCI state mapping pattern is greater than 1;

[0277] The TCI state pattern configured in the relevant parameters or signaling including the TCI state mapping pattern is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2); and

[0278] RRC configures the terminal device to perform multiple TRP transmission schemes, or at least one of URLLC transmission schemes 1a, 2a, 2b, 3 and 4, or HARQ-ACK codebook related parameters are configured in CORESET.

[0279] 11. The method according to any one of Notes 1 to 4, wherein:

[0280] The receiving at least two TCI state-related parameters or signaling configured or indicated by the network device includes:

[0281] receiving a parameter or signaling indicating that the DCI signaling includes a TCI field, a parameter or signaling indicating that the DCI signaling does not include a TCI field, at least two TCI state-related parameters or signaling among the DCI signaling including the TCI field and the DCI signaling not including the TCI field,

[0282] The determining, based on the at least two TCI state-related parameters or signaling, a transmission parameter of at least one transmission opportunity of a transport block includes:

[0283] The terminal device determines that the TCI states of more than one transmission opportunity are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or determines that the TCI states used in more than one transmission opportunity are all a TCI state predefined when the DCI signaling does not include a TCI indication field; or

[0284] The terminal device determines that the TCI state style of more than one transmission opportunity is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0285] 12. The method according to any one of Notes 1 to 4, wherein:

[0286] The receiving at least two TCI state-related parameters or signaling configured or indicated by the network device includes:

[0287] receiving a parameter or signaling indicating that the DCI signaling includes a TCI field or receiving DCI signaling including a TCI field,

[0288] The determining, based on the at least two TCI state-related parameters or signaling, a transmission parameter of at least one transmission opportunity of a transport block includes:

[0289] The terminal device does not want the TCI field in the DCI signaling to indicate more than one TCI state; or

[0290] The terminal device does not want the TCI field in the DCI signaling to indicate only one TCI state.

[0291] 13. The method according to any one of Notes 1 to 4, wherein:

[0292] The receiving at least two TCI state-related parameters or signaling configured or indicated by the network device includes:

[0293] receiving relevant parameters or signaling including a TCI state mapping pattern and DCI signaling including a TCI field, wherein the relevant parameters or signaling including the TCI state mapping pattern indicate more than one TCI state, and the TCI field in the DCI signaling indicates one TCI state,

[0294] The determining, based on the at least two TCI state-related parameters or signaling, a transmission parameter of at least one transmission opportunity of a transport block includes:

[0295] The terminal device determines that the TCI state indicated by the TCI field in the DCI signaling is used for at least one transmission opportunity.

[0296] 14. A method for determining transmission parameters, the method being applied to a terminal device, the method comprising:

[0297] The terminal device receives URLLC scheme 4 related configuration parameters and does not receive related parameters or signaling including TCI state mapping pattern;

[0298] The terminal device determines that the TCI states of more than one transmission opportunity are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or determines that the TCI states used in more than one transmission opportunity are all a TCI state predefined when the DCI signaling does not include a TCI indication field; or

[0299] The terminal device determines that the TCI state style of more than one transmission opportunity is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2).

[0300] 15. The method according to any one of claims 1 to 4 and 14, wherein:

[0301] The receiving at least two TCI state-related parameters or signaling configured or indicated by the network device includes:

[0302] receiving a parameter or signaling indicating that the DCI signaling includes a TCI field or receiving DCI signaling including a TCI field,

[0303] The method of determining the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state style determined by the terminal device and the parameters or signaling of the TCI field indicated in the DCI signaling according to the at least two TCI state-related parameters or signaling, includes: the terminal device does not want the TCI field in the DCI signaling to indicate more than one TCI state; or the terminal device does not want the TCI field in the DCI signaling to indicate only one TCI state; or the terminal device determines that the TCI state indicated by the TCI field in the DCI signaling is used for at least one transmission opportunity.

[0304] 16. A method for determining transmission parameters, the method being applied to a terminal device, the method comprising:

[0305] The terminal device receives DCI signaling including the TCI field and does not receive relevant parameters or signaling including the TCI state mapping pattern, and

[0306] The terminal device does not want the TCI field in the DCI signaling to indicate more than one TCI state, or the terminal device wants the TCI field in the DCI signaling to indicate one TCI state; or

[0307] The terminal device does not want the TCI field in the DCI signaling to indicate only one TCI state; or

[0308] The terminal device determines that the TCI state indicated by the TCI field in the DCI signaling is used for at least one transmission opportunity.

[0309] 17. A method for determining transmission parameters, the method being applied to a terminal device, the method comprising:

[0310] The terminal device receives URLLC scheme 3 related configuration parameters, and receives parameters or signaling indicating that the DCI signaling does not include a TCI field or receives DCI signaling that does not include a TCI indication field; and

[0311] The terminal device determines that the scheduled PDSCH has only one transmission opportunity and the TCI state used in the transmission opportunity is a TCI state predefined when the DCI signaling does not include a TCI indication field, or,

[0312] The terminal device determines that the scheduled PDSCH has two transmission opportunities, and the TCI states used by the two transmission opportunities are both TCI states predefined when the DCI signaling does not include a TCI indication field, or,

[0313] The terminal device determines that the scheduled PDSCH has two transmission opportunities, and the TCI states used in the two transmission opportunities are two predefined TCI states when the TCI indication field is not included in the DCI signaling.

[0314] 18. The method according to Note 17, wherein the two predefined TCI states are:

[0315] The two TCI states of the CORESET used for PDCCH transmission of scheduled PDSCH; or,

[0316] One TCI state is the activated TCI state of the CORESET used for PDCCH transmission of PDSCH, and the other TCI state is the TCI state of a CORESET to be monitored other than the CORESET used for PDCCH transmission of scheduling PDSCH; or,

[0317] The TCI status of the lowest numbered monitored CORESET in the 2 CORESET group; or,

[0318] The TCI state pair with the lowest number among the TCI states for PDSCH activation.

[0319] 19. The method according to Note 18, wherein the two TCI states of the CORESET used for the PDCCH transmission of the scheduled PDSCH are:

[0320] 2 activated TCI states of the CORESET, or,

[0321] 1 activated TCI state and 1 configured but not activated TCI state of the CORESET.

[0322] 20. The method according to note 18, wherein the TCI status of the CORESET to be monitored other than the CORESET used for PDCCH transmission of the scheduled PDSCH is:

[0323] The activated TCI status of the CORESET with the lowest CORESET ID among the CORESETs to be monitored, or,

[0324] The activated TCI state of the lowest-numbered CORESET among the monitored CORESETs that have different higher layer parameters from the CORESET used for PDCCH transmission that schedules the PDSCH.

[0325] 21. The method according to any one of Notes 1 to 20, wherein the DCI signaling not including the TCI field is at least one of the following three DCI formats:

[0326] DCI format 1_0; DCI format 1_1; and DCI format 1_2.

[0327] 22. The method according to any one of Notes 1 to 20, wherein the DCI signaling including the TCI field is at least one of the following two DCI formats:

[0328] DCI format 1_1; and DCI format 1_2.

[0329] Note 2:

[0330] 1. A device for determining a transmission parameter, the device being applied to a terminal device, the device comprising:

[0331] a first receiving unit configured to receive at least two TCI state-related parameters or signaling configured or indicated by the network device; and

[0332] A first determination unit is configured to determine the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field; or, determine the transmission parameters of at least one transmission opportunity of a transmission block based on the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field; or, determine the transmission parameters of at least one transmission opportunity of a transmission block based on the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field in the at least two TCI state-related parameters or signaling.

[0333] 2. The apparatus according to Note 1, wherein the TCI state-related parameters or signaling include at least two of the following parameters or signaling:

[0334] Parameters or signaling indicating that the DCI signaling contains the TCI field;

[0335] Parameters or signaling indicating that the DCI signaling does not include the TCI field;

[0336] Contains relevant parameters or signaling of the TCI state mapping style;

[0337] DCI signaling including the TCI field; and

[0338] DCI signaling does not include the TCI field.

[0339] 3. The device according to Note 1 or 2, wherein:

[0340] The transmission parameter includes at least one of a TCI state and a number of transmission opportunities.

[0341] 4. The device according to any one of Notes 1 to 3, wherein:

[0342] The first receiving unit receives relevant parameters or signaling including a TCI state mapping pattern, and the relevant parameters or signaling including the TCI state mapping pattern configure a TCI state mapping pattern including at most two TCI states, and receives parameters or signaling indicating that the DCI signaling does not include a TCI field or receives DCI signaling that does not include a TCI field.

[0343] The first determining unit determines that the TCI state of at least one transmission opportunity is a predefined TCI state; or determines that the TCI state of at least one transmission opportunity is one of two predefined TCI states; or determines that the configuration of the network device is an error.

[0344] 5. The apparatus according to Note 4, wherein the predefined TCI state is a predefined TCI state when the terminal device receives parameters or signaling indicating that the DCI signaling does not contain a TCI domain, or receives DCI signaling that does not contain a TCI domain.

[0345] 6. The apparatus according to note 4, wherein the two predefined TCI states are:

[0346] The two TCI states of the CORESET used for PDCCH transmission of scheduled PDSCH; or,

[0347] One TCI state is the activated TCI state of the CORESET used for PDCCH transmission of PDSCH, and the other TCI state is the TCI state of a CORESET to be monitored other than the CORESET used for PDCCH transmission of scheduling PDSCH; or,

[0348] The TCI status of the lowest numbered monitored CORESET in the 2 CORESET group; or,

[0349] The TCI state pair with the lowest number among the TCI states for PDSCH activation.

[0350] 7. The apparatus according to Note 6, wherein the two TCI states of the CORESET used for the PDCCH transmission of the scheduled PDSCH are:

[0351] 2 activated TCI states of the CORESET, or,

[0352] 1 activated TCI state and 1 configured but not activated TCI state of the CORESET.

[0353] 8. The apparatus according to note 6, wherein the TCI status of the CORESET to be monitored other than the CORESET used for PDCCH transmission of the scheduled PDSCH is:

[0354] The activated TCI status of the CORESET with the lowest CORESET ID among the CORESETs to be monitored, or,

[0355] The activated TCI state of the lowest-numbered CORESET among the monitored CORESETs that have higher-layer parameters related to the HARQ-ACK feedback codebook different from the CORESET used for PDCCH transmission of the scheduled PDSCH.

[0356] 9. The apparatus according to Note 4, wherein the error condition comprises:

[0357] In at least one of the following situations, the terminal device does not want the DCI signaling to not include the TCI indication field:

[0358] The number of TCI states configured in the relevant parameters or signaling containing the TCI state mapping pattern is greater than 1;

[0359] The TCI state pattern configured in the relevant parameters or signaling including the TCI state mapping pattern is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2); and

[0360] RRC configures the terminal device to perform multiple TRP transmission schemes, or at least one of URLLC transmission schemes 1a, 2a, 2b, 3 and 4, or HARQ-ACK codebook related parameters are configured in CORESET.

[0361] 10. The device according to any one of Notes 1 to 3, wherein:

[0362] The first receiving unit receives a parameter or signaling indicating that the DCI signaling includes a TCI field, a parameter or signaling indicating that the DCI signaling does not include a TCI field, and at least two TCI state-related parameters or signaling among DCI signaling including the TCI field and DCI signaling not including the TCI field.

[0363] The device further comprises:

[0364] a second determining unit configured to determine that the TCI states of the one or more transmission opportunities are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or to determine that the TCI states used in the one or more transmission opportunities are all the TCI states predefined when the DCI signaling does not include the TCI indication field; or

[0365] A third determination unit is used to determine that the TCI state pattern of one or more transmission opportunities is one of the following: a first TCI state (TCI1), a second TCI state (TCI2), a first TCI state (TCI1), a second TCI state (TCI2); a first TCI state (TCI1), a first TCI state (TCI1), a second TCI state (TCI2), a second TCI state (TCI2).

[0366] 11. The device according to any one of Notes 1 to 3 and 10, wherein:

[0367] The first receiving unit receives a parameter or signaling indicating that the DCI signaling includes a TCI field, or receives DCI signaling including a TCI field,

[0368] The first determining unit does not want the TCI field in the DCI signaling to indicate more than one TCI state; or the first determining unit does not want the TCI field in the DCI signaling to indicate only one TCI state.

[0369] 12. The device according to any one of Notes 1 to 3, wherein:

[0370] The first receiving unit receives relevant parameters or signaling including a TCI state mapping pattern and DCI signaling including a TCI field, and the relevant parameters or signaling including the TCI state mapping pattern indicate more than one TCI state, and the TCI field in the DCI signaling indicates one TCI state.

[0371] The first determining unit determines a TCI state indicated by a TCI field in DCI signaling for at least one transmission opportunity.

[0372] 13. A device for determining a transmission parameter, the device being applied to a terminal device, the device comprising:

[0373] a second receiving unit, configured to receive a parameter or signaling indicating that the DCI signaling includes a TCI field, a parameter or signaling indicating that the DCI signaling does not include a TCI field, at least two TCI state-related parameters or signaling among the DCI signaling including the TCI field and the DCI signaling not including the TCI field;

[0374] a fourth determining unit, configured to determine that the TCI states of more than one transmission opportunity are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or to determine that the TCI states used in more than one transmission opportunity are all a TCI state predefined when the DCI signaling does not include a TCI indication field; or

[0375] A fifth determination unit is used to determine that the TCI state pattern of one or more transmission opportunities is one of the following: a first TCI state (TCI1), a second TCI state (TCI2), a first TCI state (TCI1), a second TCI state (TCI2); a first TCI state (TCI1), a first TCI state (TCI1), a second TCI state (TCI2), a second TCI state (TCI2).

[0376] 14. A device for determining a transmission parameter, the device being applied to a terminal device, the device comprising:

[0377] a third receiving unit, configured to receive URLLC scheme 3 related configuration parameters, and receive parameters or signaling indicating that the DCI signaling does not include a TCI field, or receive DCI signaling that does not include a TCI indication field; and

[0378] A sixth determining unit is configured to determine that the scheduled PDSCH has only one transmission opportunity and the TCI state used in the transmission opportunity is a TCI state predefined when the DCI signaling does not include a TCI indication field, or

[0379] A seventh determining unit is configured to determine that the scheduled PDSCH has two transmission opportunities, and the TCI states used in the two transmission opportunities are both TCI states predefined when the DCI signaling does not include a TCI indication field, or,

[0380] An eighth determining unit is configured to determine that the scheduled PDSCH has two transmission opportunities, and that the TCI states used in the two transmission opportunities are both two predefined TCI states when the DCI signaling does not include a TCI indication field.

[0381] 15. The apparatus according to Note 14, wherein the two predefined TCI states are:

[0382] The two TCI states of the CORESET used for PDCCH transmission of scheduled PDSCH; or,

[0383] One TCI state is the activated TCI state of the CORESET used for PDCCH transmission of PDSCH, and the other TCI state is the TCI state of a CORESET to be monitored other than the CORESET used for PDCCH transmission of scheduling PDSCH; or,

[0384] The TCI status of the lowest numbered monitored CORESET in the 2 CORESET group; or,

[0385] The TCI state pair with the lowest number among the TCI states for PDSCH activation.

[0386] 16. The apparatus according to note 15, wherein the two TCI states of the CORESET used for the PDCCH transmission of the scheduled PDSCH are:

[0387] 2 activated TCI states of the CORESET, or,

[0388] 1 activated TCI state and 1 configured but not activated TCI state of the CORESET.

[0389] 17. The apparatus according to note 15, wherein the TCI status of the CORESET to be monitored other than the CORESET used for PDCCH transmission of the scheduled PDSCH is:

[0390] The activated TCI status of the CORESET with the lowest CORESET ID among the CORESETs to be monitored, or,

[0391] The activated TCI state of the lowest-numbered CORESET among the monitored CORESETs that have higher-layer parameters related to the HARQ-ACK feedback codebook different from the CORESET used for PDCCH transmission of the scheduled PDSCH.

[0392] 18. A device for determining transmission parameters, the device being applied to a network device, the device comprising:

[0393] A first sending unit is used to configure or indicate at least two TCI state-related parameters or signaling to a terminal device, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the parameters or signaling indicating that the DCI signaling does not contain the TCI field or the parameters or signaling indicating that the DCI signaling contains the TCI field; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the relevant parameters or signaling containing the TCI state mapping style in the at least two TCI state-related parameters or signaling, and the DCI signaling that does not contain the TCI field; or, so that the terminal device determines the transmission parameters of at least one transmission opportunity of a transmission block according to the TCI state style determined by the terminal device and the parameters or signaling indicating that the DCI signaling contains the TCI field in the at least two TCI state-related parameters or signaling.

[0394] 19. The apparatus according to Note 18, wherein the TCI state-related parameters or signaling include at least two of the following parameters or signaling:

[0395] Parameters or signaling indicating that the DCI signaling contains the TCI field;

[0396] Parameters or signaling indicating that the DCI signaling does not include the TCI field;

[0397] Contains relevant parameters or signaling of the TCI state mapping style;

[0398] DCI signaling including the TCI field; and

[0399] DCI signaling does not include the TCI field.

[0400] 20. The device according to Note 18 or 19, wherein:

[0401] The transmission parameter includes at least one of a TCI state and a number of transmission opportunities.

[0402] 21. The device according to any one of Notes 18 to 20, wherein:

[0403] The TCI state related parameters or signaling configured or indicated by the network device include: related parameters or signaling including a TCI state mapping pattern and DCI signaling including a TCI field,

[0404] Furthermore, the number of TCI states indicated by the relevant parameters or signaling containing the TCI state mapping pattern is consistent with the number of TCI states indicated by the TCI field in the DCI signaling.

[0405] 22. A terminal device comprising the apparatus according to any one of Notes 1 to 17.

[0406] 23. A network device comprising the apparatus according to any one of Notes 18 to 21.

[0407] 24. A communication system comprising the terminal device according to Note 22 and / or the network device according to Note 23.

Claims

1. A device for determining a transmission parameter, the device being applied to a terminal device, the device comprising: A first receiving unit, configured to receive at least two TCI state-related parameters or signaling configured or indicated by a network device; as well as a first determining unit configured to determine, based on the relevant parameter or signaling including the TCI state mapping pattern among the at least two TCI state-related parameters or signaling, and the DCI signaling not including the TCI field, a transmission parameter of at least one transmission opportunity of a transport block; in, The first receiving unit receives relevant parameters or signaling including a TCI state mapping pattern, and the relevant parameters or signaling including the TCI state mapping pattern configure a TCI state mapping pattern including at most two TCI states, and receives DCI signaling that does not include a TCI field. The first determining unit determines that the TCI state of at least one transmission opportunity is a predefined TCI state; or determines that the TCI state of at least one transmission opportunity is one of two predefined TCI states; or determines that the configuration of the network device is an error condition, The predefined TCI state is a predefined TCI state when the terminal device receives DCI signaling that does not contain a TCI domain.

2. The device according to claim 1, wherein The TCI status related parameters or signaling include at least two of the following parameters or signaling: Parameters or signaling indicating that the DCI signaling contains the TCI field; Parameters or signaling indicating that the DCI signaling does not include the TCI field; Contains relevant parameters or signaling of the TCI state mapping style; DCI signaling including the TCI field; and DCI signaling does not include the TCI field.

3. The device according to claim 1, wherein The transmission parameter includes at least one of a TCI state and a number of transmission opportunities.

4. The apparatus of claim 1 , wherein the two predefined TCI states are: The two TCI states of the CORESET used for PDCCH transmission of scheduled PDSCH; or, One TCI state is the activated TCI state of the CORESET used for PDCCH transmission of PDSCH, and the other TCI state is the TCI state of a CORESET to be monitored other than the CORESET used for PDCCH transmission of scheduling PDSCH; or, The TCI status of the lowest numbered monitored CORESET in the 2 CORESET group; or, The TCI state pair with the lowest number among the TCI states for PDSCH activation.

5. The device according to claim 4, wherein The two TCI states of the CORESET used for the PDCCH transmission of the scheduled PDSCH are: 2 activated TCI states of the CORESET, or, 1 activated TCI state and 1 configured but not activated TCI state of the CORESET.

6. The device according to claim 4, wherein The TCI status of the CORESET to be monitored other than the CORESET used for PDCCH transmission of the scheduled PDSCH is: The activated TCI status of the CORESET with the lowest CORESET ID among the CORESETs to be monitored, or, The activated TCI state of the lowest-numbered CORESET among the monitored CORESETs that have higher-layer parameters related to the HARQ-ACK feedback codebook different from the CORESET used for PDCCH transmission of the scheduled PDSCH.

7. The device according to claim 1, wherein The error conditions include, In at least one of the following situations, the terminal device does not want the DCI signaling to not include the TCI indication field: The number of TCI states configured in the relevant parameters or signaling containing the TCI state mapping pattern is greater than 1; The TCI state pattern configured in the relevant parameters or signaling including the TCI state mapping pattern is one of the following: first TCI state (TCI1), second TCI state (TCI2), first TCI state (TCI1), second TCI state (TCI2); first TCI state (TCI1), first TCI state (TCI1), second TCI state (TCI2), second TCI state (TCI2); and RRC configures the terminal device to perform multiple TRP transmission schemes, or at least one of URLLC transmission schemes 1a, 2a, 2b, 3 and 4, or HARQ-ACK codebook related parameters are configured in CORESET.

8. The device according to any one of claims 1 to 3, wherein: The first receiving unit receives a parameter or signaling indicating that the DCI signaling includes a TCI field, a parameter or signaling indicating that the DCI signaling does not include a TCI field, and at least two TCI state-related parameters or signaling among DCI signaling including the TCI field and DCI signaling not including the TCI field. The device further comprises: a second determining unit configured to determine that the TCI states of the one or more transmission opportunities are all the first TCI state, where the first TCI state is the first TCI state indicated in the DCI signaling, or to determine that the TCI states used in the one or more transmission opportunities are all the TCI states predefined when the DCI signaling does not include the TCI indication field; or A third determination unit is used to determine that the TCI state pattern of one or more transmission opportunities is one of the following: a first TCI state (TCI1), a second TCI state (TCI2), a first TCI state (TCI1), a second TCI state (TCI2); a first TCI state (TCI1), a first TCI state (TCI1), a second TCI state (TCI2), a second TCI state (TCI2).

9. The device according to claim 8, wherein The first receiving unit receives a parameter or signaling indicating that the DCI signaling includes a TCI field, or receives DCI signaling including a TCI field, The first determining unit does not want the TCI field in the DCI signaling to indicate more than one TCI state; or the first determining unit does not want the TCI field in the DCI signaling to indicate only one TCI state.

10. The device according to any one of claims 1 to 3, wherein: The first receiving unit receives relevant parameters or signaling including a TCI state mapping pattern and DCI signaling including a TCI field, and the relevant parameters or signaling including the TCI state mapping pattern indicate more than one TCI state, and the TCI field in the DCI signaling indicates one TCI state. The first determining unit determines a TCI state indicated by a TCI field in DCI signaling for at least one transmission opportunity.

11. A device for determining transmission parameters, the device being applied to a network device, the device comprising: a first sending unit, configured to configure or indicate at least two TCI state-related parameters or signaling to a terminal device, so that the terminal device determines transmission parameters of at least one transmission opportunity of a transport block based on the relevant parameters or signaling including the TCI state mapping pattern and the DCI signaling not including the TCI field among the at least two TCI state-related parameters or signaling; in, The terminal device receives relevant parameters or signaling including a TCI state mapping pattern, and the relevant parameters or signaling including the TCI state mapping pattern are configured with a TCI state mapping pattern including at most two TCI states, and receives DCI signaling that does not include a TCI domain. The terminal device determines that the TCI state of at least one transmission opportunity is a predefined TCI state; or determines that the TCI state of at least one transmission opportunity is one of two predefined TCI states; or determines that the configuration of the network device is an error condition, The predefined TCI state is a predefined TCI state when the terminal device receives DCI signaling that does not contain a TCI domain.

12. The device according to claim 11, wherein The TCI status related parameters or signaling include at least two of the following parameters or signaling: Parameters or signaling indicating that the DCI signaling contains the TCI field; Parameters or signaling indicating that the DCI signaling does not include the TCI field; Contains relevant parameters or signaling of the TCI state mapping style; DCI signaling including the TCI field; and DCI signaling does not include the TCI field.

13. The device according to claim 11 or 12, wherein: The transmission parameter includes at least one of a TCI state and a number of transmission opportunities.

14. The device according to claim 11 or 12, wherein The TCI state related parameters or signaling configured or indicated by the network device include: related parameters or signaling including a TCI state mapping pattern and DCI signaling including a TCI field, Furthermore, the number of TCI states indicated by the relevant parameters or signaling containing the TCI state mapping pattern is consistent with the number of TCI states indicated by the TCI field in the DCI signaling.

Images