Transmission method, device, communication equipment and terminal

Abstract

The present application discloses a transmission method, apparatus, communication device and terminal, belonging to the field of wireless communication technology. Among them, the transmission method includes: when the first spatial information of a target object is determined according to the second spatial information corresponding to a reference resource, and the reference resource corresponds to multiple second spatial information, the communication device determines that the first spatial information of the target object corresponds to target spatial information; wherein, the target spatial information is one or more of the multiple second spatial information; and the target object is transmitted using the first spatial information corresponding to the target spatial information.

Description

Technical Field

[0001] This application belongs to the field of wireless communication technologies, and particularly relates to a transmission method, apparatus, communication device, and terminal. Background Art

[0002] In the related art, in some cases, the spatial information of a certain uplink and downlink channel or uplink and downlink signal needs to be determined according to the spatial information of a reference resource. This mainly includes the spatial information used for receiving these downlink channels and downlink signals when the spatial information of the downlink channel or downlink signal cannot be configured, activated, or indicated, or in other situations where it cannot be determined. The downlink channels include Physical Downlink Shared Channel (PDSCH), PDSCH scheduled across Component Carriers (CCs), etc., and the downlink signals include Aperiodic Channel State Information Reference Signal (AP-CSI-RS), etc.; the spatial information used for transmitting these uplink channels and uplink signals when the spatial information of the uplink channel or uplink signal cannot be configured, activated, or indicated, or in other situations where it cannot be determined. The uplink channels include Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), etc., and the uplink signals include Sounding Reference Signal (SRS), etc. In the above cases, the spatial information for receiving downlink channels and downlink signals and the spatial information for transmitting uplink channels and uplink signals usually correspond to the spatial information of the reference resource, where the reference resource can be a Control Resource Set (CORESET), the Physical Downlink Control Channel (PDCCH) that schedules the downlink channel / signal, uplink channel / signal, or other channels / signals.

[0003] For example, when the high-layer parameter tci-PresentInDCI configured for a CORESET is set to "enabled" in a terminal (User Equipment, UE, also known as user device), the UE considers that the Downlink Control Information (DCI) format 1_1 or DCI format 1_2 in the PDCCH transmitted on this CORESET includes a Transmission Configuration Indication (TCI) field, which is used to indicate information including the spatial reception beam, for example, the TCI state. Only after the UE detects the DCI can it correctly interpret the TCI state from it and determine the reception beam used for receiving the PDSCH scheduled by this PDCCH. It takes a certain amount of time for the UE to detect the DCI and switch the beam according to the TCI indication. If the time offset of the DCI format 1_1 indicating the scheduling of the PDSCH, that is, the symbol interval between the last symbol of the PDCCH where the DCI is located and the first symbol of the single-slot or multi-slot PDSCH it schedules, is greater than or equal to the threshold timeDurationForQCL, the UE can receive the PDSCH of the serving cell according to the reception beam indicated by the TCI field in this DCI, that is, it can be considered that the Demodulation Reference Signal (DMRS) port of the single-slot or multi-slot PDSCH is Quasi Co-Located (QCL) with the Reference Signal (RS) of the TCI state indicated by the TCI field. When the high-layer parameter tci-PresentInDCI configured for a CORESET is set to "enabled", or when the high-layer parameter tci-PresentInDCI is not configured, if all the TCI code points activated by the Medium Access Control (MAC) Control Element (CE) are mapped to one TCI state, and the above time offset is less than timeDurationForQCL, and at this time the UE has not finished detecting the DCI or completed the reception beam switching operation, the UE can use the default reception beam to buffer the received signals on these symbols so as to demodulate the scheduled PDSCH after successfully detecting the DCI.The UE can receive the PDSCH using the default receiving beam, that is, the UE can consider that the DMRS port of the PDSCH of the serving cell is QCL with the RS in the QCL parameters indicated by the PDCCH QCL within the CORESET, where the CORESET is the CORESET with the smallest CORESET ID associated with the monitored search space (SS) among one or more CORESETs on the serving cell active bandwidth part (Bandwidth Part, BWP) monitored by the UE in the most recent time slot.

[0004] However, in some scenarios, the reference resource of a certain uplink and downlink channel or uplink and downlink signal may correspond to multiple spatial information. In this case, the communication device cannot determine the spatial information of the uplink and downlink channel or uplink and downlink signal. For example, as a reliability enhancement implementation method of a control channel in a multi-transmission and reception point (TRP) scenario, the PDCCH is sent by multiple TRPs to reduce the probability of beam link failure. In this case, the PDCCH may correspond to multiple TCI states or QCLs. If the UE considers that the DMRS port of the PDSCH of the serving cell is QCL with the RS in the QCL parameters indicated by the PDCCH QCL within the CORESET, then due to the PDCCH corresponding to multiple different TCI states or QCLs, the UE cannot determine the spatial information for receiving the PDSCH. Summary of the Invention

[0005] Embodiments of this application provide a transmission method, apparatus, communication device, and terminal, which can solve the problem of being unable to determine the spatial information of an uplink and downlink channel or uplink and downlink signal when the reference resource of a certain uplink and downlink channel or uplink and downlink signal corresponds to multiple spatial information.

[0006] In a first aspect, a transmission method is provided. The method includes: when the first spatial information of a target object is determined according to the second spatial information corresponding to a reference resource, the communication device determines that the first spatial information of the target object corresponds to target spatial information; where the reference resource corresponds to multiple second spatial information, and the target spatial information is one or more of the multiple second spatial information; and the target object is transmitted using the determined first spatial information.

[0007] In a second aspect, a transmission device is provided, including: a first determination module, configured to determine that the first spatial information of a target object corresponds to target spatial information when the first spatial information of the target object is determined according to second spatial information corresponding to a reference resource, and there are multiple pieces of second spatial information corresponding to the reference resource; wherein, the target spatial information is one or more of the multiple pieces of second spatial information; a transmission module, configured to transmit the target object by using the first spatial information corresponding to the target spatial information.

[0008] In a third aspect, a method for determining a detection opportunity is provided, including: when multiple spatial relationships are configured in a search space associated with CORESET#0, the multiple spatial relationships correspond to multiple synchronization signal blocks, and different synchronization signal blocks correspond to different spatial relationships, a terminal determines a detection opportunity for the search space according to one of the synchronization signal blocks, or determines multiple detection opportunities for the search space according to the multiple synchronization signal blocks.

[0009] In a fourth aspect, a device for determining a detection opportunity is provided, including: a second determination module, configured to determine that multiple spatial relationships are configured in a search space associated with CORESET0, the multiple spatial relationships correspond to multiple synchronization signal blocks, and different synchronization signal blocks correspond to different spatial relationships; a third determination module, configured to determine a detection opportunity for the search space according to one of the synchronization signal blocks, or determine multiple detection opportunities for the search space according to the multiple synchronization signal blocks.

[0010] In a fifth aspect, a communication device is provided, which includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0011] In a sixth aspect, a terminal is provided, which includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method described in the third aspect are implemented.

[0012] In a seventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0013] In an eighth aspect, a chip is provided, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run a communication device program or instruction to implement the method described in the first aspect, or the processor is configured to run a terminal program or instruction to implement the method described in the third aspect.

[0014] In a ninth aspect, a computer program product is provided. The computer program product includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, it implements the steps of the method described in the first aspect, or implements the steps of the method described in the third aspect.

[0015] In an embodiment of the present application, when the first spatial information of the target object is determined according to the second spatial information corresponding to the reference resource, and the reference resource corresponds to multiple second spatial information, the communication device determines that the first spatial information of the target object corresponds to one or more of the multiple second spatial information, and then transmits the target object using the first spatial information corresponding to one or more of the multiple second spatial information, so that it is possible to determine the spatial information of the uplink and downlink channels or uplink and downlink signals when the reference resource of a certain uplink and downlink channel or uplink and downlink signal (i.e., the target object) corresponds to multiple spatial information. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown;

[0017] Figure 2 A schematic flowchart of a transmission method provided by an embodiment of the present application is shown;

[0018] Figure 3 A schematic flowchart of a method for determining a detection opportunity provided by an embodiment of the present application is shown;

[0019] Figure 4 A schematic structural diagram of a transmission device provided by an embodiment of the present application is shown;

[0020] Figure 5 A schematic structural diagram of a device for determining a detection opportunity provided by an embodiment of the present application is shown;

[0021] Figure 6 A schematic structural diagram of a communication device provided by an embodiment of the present application is shown;

[0022] Figure 7 A schematic hardware structure diagram of a terminal provided by an embodiment of the present application is shown;

[0023] Figure 8 A schematic hardware structure diagram of a network-side device provided by an embodiment of the present application is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects before and after are in an "or" relationship.

[0026] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. However, for the purpose of illustration, the New Radio (NR) system is described, and the NR term is used in most of the following descriptions, but these technologies can also be applied to applications other than the NR system application, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0027] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can also be called a terminal device or a user terminal (User Equipment, UE). The terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (Mobile Internet Device, MID), a wearable device or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc. Terminal-side devices. Wearable devices include: bracelets, earphones, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can be a base station or a core network. Among them, the base station can be called a Node B, an evolved Node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0028] The transmission method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0029] Figure 2 A schematic flowchart of a transmission method in the embodiments of the present application is shown. This method 200 can be executed by a communication device. In other words, the method can be executed by software or hardware installed on the communication device. As Figure 2 shown, this method may include the following steps.

[0030] S210. When the first spatial information of the target object is determined according to the second spatial information corresponding to the reference resource, the communication device determines that the first spatial information of the target object corresponds to the target spatial information; where the reference resource corresponds to multiple second spatial information, and the target spatial information is one or more of the multiple second spatial information.

[0031] In the embodiments of the present application, the determination of the first spatial information of the target object according to the second spatial information corresponding to the reference resource means that the first spatial information of the target object cannot adopt the spatial information indicated in the downlink control information, or the downlink control information does not indicate the first spatial information of the target object. For example, when the high-layer parameter tci-PresentInDCI configured on a CORESET is set to "enabled", the DCI in the PDCCH transmitted on this CORESET adopts DCI format 1_1 (DCI format 1_1) or DCI format 1_2 (DCI Format 1_2), and the DCI includes a TCI field, but the symbol interval between the last symbol of the PDCCH where the DCI is located and the first symbol of the single-slot or multi-slot PDSCH it schedules is less than the first preset threshold (timeDurationForQCL), then the first spatial information of the target object (in this case, the PDSCH) is determined according to the second spatial information of the reference resource, where the reference resource can be the CORESET with the smallest ID in the CORESET associated with the monitored search space of the nearest time unit (for example, a slot, a sub-slot, or multiple OFDM symbols (such as SPAN) in one or more slots).

[0032] In the embodiments of the present application, the reference resource corresponding to multiple second spatial information includes: the reference resource corresponding to the target object is one, and this reference resource corresponds to multiple second spatial information; or, the reference resources corresponding to the target object are multiple, that is, the reference resources include multiple sub-reference resources, and each sub-reference resource corresponds to one or more second spatial information.

[0033] For example, taking the reference resource as the PDCCH or the search space as an example, in practical applications, the PDCCH can be sent in one of the following ways:

[0034] (1) The time-frequency resources of a PDCCH or a search space respectively correspond to different second spatial information according to a certain rule based on a certain resource granularity, and are sent in a frequency division multiplexing (FDM) or time division multiplexing (TDM) manner. Among them, the resource granularity can be a control channel element (CCE), a resource element group (REG), a REG bundle, a precoder granularity, a PDCCH candidate, a search space detection opportunity, etc.;

[0035] (2) The different second spatial information corresponding to multiple transmissions of a PDCCH is sent in a spatial division multiplexing (SDM), FDM, TDM, or a combination thereof.

[0036] Therefore, in a possible implementation, the PDCCH corresponding to multiple second spatial information includes at least one of the following:

[0037] (1) A PDCCH belongs to a search space or multiple transmissions of the PDCCH belong to a search space, and the search space is associated with a CORESET, where the CORESET corresponds to at least two second spatial information;

[0038] (2) A PDCCH belongs to a search space or multiple transmissions of the PDCCH belong to a search space, and the search space is associated with at least two CORESETs, where each CORESET corresponds to one second spatial information;

[0039] (3) Multiple transmissions of the PDCCH belong to different search spaces, and each search space is associated with the same CORESET, where the CORESET corresponds to at least two second spatial information;

[0040] (4) Multiple transmissions of the PDCCH belong to different search spaces, and each search space is respectively associated with a CORESET, where each CORESET corresponds to one second spatial information.

[0041] In another possible implementation, the terminal is configured with multiple search spaces for sending the same PDCCH, and the multiple search spaces corresponding to multiple second spatial information include at least one of the following:

[0042] (1) The multiple search spaces are associated with at least two CORESETs, where each CORESET corresponds to a second spatial information;

[0043] (2) The multiple search spaces are associated with the same CORESET, where the CORESET corresponds to at least two second spatial information, and each search space corresponds to one second spatial information of the CORESET.

[0044] At least two second spatial information corresponding to the foregoing PDCCH, search space or CORESET may belong to the same TRP. In a multiple TRP (MTRP) scenario, at least two second spatial information corresponding to the foregoing PDCCH, search space or CORESET may respectively belong to different TRPs.

[0045] In an embodiment of the present application, the target spatial information may be one or more of the multiple second spatial information. Specifically, whether it is one or more may be determined according to pre-setting, agreement or actual scheduling. For example, if the spatial information indicated in the DCI for scheduling a downlink channel / signal or an uplink channel / signal is multiple, the target spatial information may be multiple of the multiple second spatial information, or when the second spatial information for configuring and / or activating a reference resource is multiple, the target spatial information may be multiple of the multiple second spatial information.

[0046] In a possible implementation manner, the target spatial information may be one or more of the multiple second spatial information with the strongest signal strength. Wherein, if the communication device is a terminal, the signal strength may be measured according to the signals received corresponding to the multiple second spatial information. For example, by measuring the DMRS signal quality of the PDCCH transmitted using a certain spatial information or the RS quality transmitted using a certain spatial information, the signal strength of the spatial information is obtained. Adopting this possible implementation manner, if the target object is an uplink channel or an uplink signal, the transmission of the target object uses the first spatial information corresponding to the second spatial information with the strongest signal strength, which can ensure the reliability of the uplink channel or uplink signal transmission.

[0047] Alternatively, in another possible implementation manner, the target spatial information may also be one or more of the multiple second spatial information specified in advance. For example, the first spatial information of the reference resource.

[0048] In another possible implementation, if the reference resource includes multiple sub-reference resources, the target spatial information may be the second spatial information corresponding to one or more preset sub-reference resources among the multiple sub-reference resources. For example, if the reference resource includes multiple search spaces for transmitting the same PDCCH, the multiple search spaces are associated with different CORESETs, and each CORESET corresponds to one of the multiple spatial information, the target spatial information may be the spatial information corresponding to the CORESET with the smallest CORESET ID among the multiple CORESETs; or the target spatial information may be the spatial relationship corresponding to the CORESET associated with a certain search space among the multiple search spaces.

[0049] In the above possible implementation, the number of the second spatial information corresponding to the preset sub-reference resources may be preset or agreed upon to be one or more. For example, it is stipulated by protocol that the spatial information (e.g., TCI state or QCI) corresponding to CORESET #0 is one, or if the DCI scheduling indicates that the target object (e.g., PDSCH or PUSCH) is multi-TRP transmission, the number of the second spatial information corresponding to the preset sub-reference resources may also be preset or agreed upon or activated to be multiple. That is, in this possible implementation, the number of the second spatial information corresponding to the preset sub-reference resources may be preset or agreed upon or activated to be the same as the number of the second spatial information included in the target spatial information.

[0050] Alternatively, in another possible implementation, if the reference resource includes multiple sub-reference resources, the target spatial information is one or more second spatial information with the strongest signal strength among the multiple second spatial information corresponding to the multiple sub-reference resources. Among them, if the communication device is a terminal, the signal strength may be measured according to the signals sent by multiple TRPs. For example, by measuring the DMRS signal quality of the PDCCH transmitted using a certain spatial information or the RS quality transmitted using a certain spatial information, the signal strength of this spatial information is obtained.

[0051] In a possible transmission mode, the target object may have multiple transmission resources, and the first spatial information used by the target object for transmission on different transmission resources may correspond to the multiple second spatial information included in the target spatial information according to a mapping rule, where the multiple transmission resources include at least one of the following: multiple time-division multiplexed transmission resources, multiple frequency-division multiplexed transmission resources, multiple space-division multiplexed transmission resources, and multiple code-division multiplexed transmission resources.

[0052] For example, if the target object transmits at different frequencies, the first spatial information used by the target object for transmission at different frequencies can correspond to multiple second spatial information included in the target spatial information according to a pre-set mapping rule. For example, the multiple second spatial information included in the target spatial information are: spatial information 1 and spatial information 2. If the target object transmits on sub-carrier groups 1 and 2 that are orthogonal in the frequency domain, then the first spatial information used by the target object on sub-carrier group 1 can be determined to correspond to spatial information 1 according to the mapping rule, and the first spatial information used by the target object on sub-carrier group 2 corresponds to spatial information 2.

[0053] Alternatively, the target object can also transmit multiple times on orthogonal time resources, and the first spatial information used for each transmission corresponds to one of the multiple second spatial information included in the target spatial information according to the mapping rule. For example, according to an alternating mapping rule, if the target spatial information includes two second spatial information: spatial information 1 and spatial information 2, then the first spatial information of the first transmission of the target object corresponds to spatial information 1, the first spatial information of the second transmission corresponds to spatial information 2, the first spatial information of the third transmission corresponds to spatial information 1, the first spatial information of the fourth transmission corresponds to spatial information 2, and so on for alternating mapping. Alternatively, a mapping rule of continuously repeating correspondence to the same second spatial information for n times can also be used. For example, n = 2, and the target spatial information includes two second spatial information: spatial information 1 and spatial information 2. Then the first spatial information of the first transmission of the target object corresponds to spatial information 1, the first spatial information of the second transmission corresponds to spatial information 1, the first spatial information of the third transmission corresponds to spatial information 2, the first spatial information of the fourth transmission corresponds to spatial information 2, and so on for cyclic mapping.

[0054] Alternatively, if the target object transmits on different spatial domain resources (for example, different layers of MIMO), the first spatial information used by the target object for transmission in different spaces can correspond to multiple second spatial information included in the target spatial information according to a pre-set mapping rule. For example, the multiple second spatial information included in the target spatial information are: spatial information 1 and spatial information 2. If the target object transmits on layer 1 and layer 2, then the first spatial information used by the target object on layer 1 can be determined to correspond to spatial information 1 according to the mapping rule, and the first spatial information used by the target object on layer 2 corresponds to spatial information 2.

[0055] Alternatively, in another possible implementation of the transmission method, the target object has one transmission resource or multiple transmission resources, and the target spatial information is one of the multiple second spatial information. That is, in this possible implementation, even if the target object has multiple transmission resources, the first spatial information used for transmission on each transmission resource corresponds to the same second spatial information, that is, the first spatial information used for transmission on each transmission resource is the same.

[0056] In each of the above possible implementation manners, if the terminal for transmitting the target object is configured with multiple first identifiers, the first identifier corresponding to the reference resource is the same as the first identifier corresponding to the target object. For example, the first identifier may be a Radio Resource Control (RRC) parameter: CORESETPoolIndex (CORESET pool index), which is usually used to identify the TRP. The network may configure multiple CORESETs for the terminal to be associated with different CORESETPoolIndex values to distinguish the TRPs to which the respective CORESETs belong.

[0057] In a possible implementation manner, the reference resource may be in the same time unit as the target object. That is, in this possible implementation manner, the first spatial information of the target object corresponds to the second spatial information of the reference resource within the same time unit.

[0058] In the above possible implementation manner, a time unit may be a time slot, or may be a partial Orthogonal Frequency Division Multiplexing (OFDM) symbol in a time slot, or may be multiple time slots, or may be partial OFDM symbols in multiple time slots, which is not specifically limited in this embodiment.

[0059] In a possible implementation manner, the target object may include any one of the following: an uplink channel, a downlink channel, an uplink signal, a downlink signal, CORESET #0.

[0060] In a possible implementation manner, the reference resource includes any one of the following: a CORESET, a search space, a PDCCH for scheduling the target object, a Physical Up-link Control Channel (PUCCH), configured and / or activated spatial information, a Synchronization Signal and PBCH block (SSB).

[0061] In a possible implementation manner, the first spatial information includes one of the following: a TCI state, a QCL, a Spatial Relation.

[0062] In the embodiments of the present application, the first spatial information corresponding to the target spatial information may be the target spatial information. For example, if the target spatial information is the TCI state, the first spatial information may be this TCI state. Alternatively, the first spatial information corresponding to the target spatial information may be the spatial information having a corresponding relationship with the target spatial information. For example, if the target spatial information is the TCI state or QCL, the first spatial information may be the spatial relationship corresponding to this TCI state or QCL.

[0063] S212, transmit the target object by using the first spatial information corresponding to the target spatial information.

[0064] In the embodiments of the present application, transmitting the target object includes receiving the target object or sending the target object. For example, if the target object is a downlink channel (e.g., PDSCH), the communication device may be a network-side device or a terminal. For the network-side device, the downlink channel is sent by using the first spatial information corresponding to the target spatial information. For the terminal, the downlink channel is received by using the first spatial information corresponding to the target spatial information.

[0065] Taking the terminal as an example below, the technical solutions provided in the embodiments of the present application are described by different target objects.

[0066] Embodiment 1

[0067] In this embodiment, taking the target object as PDSCH as an example, the technical solutions provided in the embodiments of the present application are described.

[0068] In this embodiment, when the PDCCH corresponding to the DCI detected by the UE corresponds to multiple TCI states, if the TCI state of the PDSCH is not indicated in the DCI. For example, the detected DCI is DCI format 1_0 or the detected DCI is DCI format 1_1 or DCI format 1_2 without configuring tci-PresentInDCI; or, one TCI state is indicated in the detected DCI, but the symbol interval between the last OFDM symbol of the PDCCH where the DCI is located and the first OFDM symbol of the single-slot or multi-slot PDSCH scheduled by the PDCCH is less than the first threshold value (e.g., timeDurationForQCL), then the TCI state or QCL of the PDSCH scheduled by the PDCCH is determined according to the TCI state or QCL corresponding to the reference resource (predetermined CORESET, that is, the CORESET associated with the detection search space of the nearest time unit).

[0069] In the multi-TRP scenario, the PDCCH can be enhanced in the following ways: (1) The time-frequency resources of a PDCCH are respectively corresponding to different TCI states according to a certain rule based on a certain resource granularity and are transmitted in an FDM or TDM manner; (2) Multiple transmissions of a PDCCH correspond to different TCI states and are transmitted in an SDM, FDM, TDM or a combination thereof.

[0070] Therefore, the PDCCH where the DCI detected by the UE is located corresponds to multiple TCI states including but not limited to:

[0071] 1) A PDCCH detected by the UE belongs to a first search space or multiple transmissions of the PDCCH belong to a first search space, and the first search space is associated with a CORESET, where the CORESET corresponds to at least two TCI states;

[0072] 2) A PDCCH detected by the UE belongs to a second search space or multiple transmissions of the PDCCH belong to a second search space, and the second search space is associated with at least two CORESETs, where each CORESET corresponds to one TCI state;

[0073] 3) Multiple transmissions of the PDCCH detected by the UE belong to different third search spaces (i.e., a search space group), and each third search space is associated with the same CORESET, where the CORESET corresponds to at least two TCI states;

[0074] 4) Multiple transmissions of the PDCCH detected by the UE belong to different fourth search spaces, and each fourth search space is respectively associated with a CORESET, where each CORESET corresponds to one TCI state.

[0075] In this embodiment, in the case where the detected DCI does not indicate the TCI state or the detected DCI indicates one TCI state, if the symbol interval offset1 between the last OFDM symbol of the PDCCH where the DCI is located and the first OFDM symbol of the single-slot or multi-slot PDSCH scheduled by the PDCCH is less than the first threshold timeDurationForQCL, and multiple first identifiers (CORESETPoolIndex) are not configured and the activated TCI code points all correspond to only one TCI state or QCL, the spatial information (e.g., TCI state) of the PDSCH can be determined in the following way:

[0076] (1) If the CORESET associated with the monitored search space of the most recent time unit (e.g., time slot, sub - time slot, or multiple OFDM symbols (e.g., SPAN) in one or more time slots) corresponds to K different TCI states, then the TCI state of the PDSCH is the same as M of the K different TCI states, where K is an integer greater than 1 and M is an integer greater than or equal to 1. For example, it is the same as the nth or the nth to the (n + M - 1)th TCI state among the multiple different TCI states corresponding to the CORESET associated with the monitored search space of the most recent time unit, where the value of n can be preset or agreed in advance. Alternatively, the TCI state of the PDSCH is the M TCI states with the strongest signal strength among the K different TCI states.

[0077] (2) If the monitored search space of the most recent time unit is associated with multiple CORESETs, then the TCI state or QCL of the PDSCH corresponds to the TCI state corresponding to the CORESET with the smallest identifier (ID) among the multiple CORESETs. Alternatively, the TCI state of the PDSCH is the M TCI states with the strongest signal strength among the multiple TCI states corresponding to the multiple CORESETs, where M is an integer greater than or equal to 1. In this possible implementation, it can be preset or agreed that the CORESET with the smallest identifier is configured with M TCI states. Specifically, refer to Table 1. Among them, in this embodiment, the target object in Table 1 is the PDSCH.

[0078] In this embodiment, when the detected DCI does not indicate the TCI state, if the symbol interval offset1 between the last OFDM symbol of the PDCCH where the DCI is located and the first OFDM symbol of the single - time - slot or multi - time - slot PDSCH scheduled by the PDCCH is greater than or equal to the first threshold timeDurationForQCL, and no multiple first identifiers (CORESETPoolIndex) are configured and the activated TCI code points all correspond to only one TCI state or QCL, then the TCI state of the PDSCH can be determined in one of the following ways:

[0079] (1) If it is detected that the time-frequency resources of the PDCCH where the DCI is located correspond to different spatial information according to a certain rule based on a certain resource granularity and are transmitted in an FDM or TDM manner, determine that the spatial information of the single-transmission PDSCH or the multi-transmission PDSCH is one of the multiple spatial information corresponding to the PDCCH (i.e., the PDCCH is the reference resource for the PDSCH). That is, the TCI state of each PDSCH transmission corresponds to one of the TCI states or QCLs of the PDCCH. Alternatively, for the multi-transmission PDSCH, determine that the spatial information of each PDSCH transmission corresponds to one of the multiple spatial information corresponding to the PDCCH according to a predetermined rule. For example, corresponding alternately, or the n transmissions are connected and correspond to the same spatial information. For example, if the PDCCH corresponds to TCI state 1 and TCI state 2 according to a certain rule based on a certain resource granularity, then the spatial information of the first transmission of the multi-transmission PDSCH corresponds to TCI state 1, the spatial information of the second transmission corresponds to TCI state 2, the spatial information of the third transmission corresponds to TCI state 1, and so on, corresponding alternately.

[0080] (2) If it is detected that the multiple transmissions of the PDCCH where the DCI is located correspond to different spatial information and are transmitted in an SDM, FDM, TDM, or a combination thereof, determine that the spatial information of the single-transmission PDSCH or the multi-transmission PDSCH corresponds to the spatial information of one of the multiple transmissions of the PDCCH. For example, it corresponds to the spatial information of the first or the nth or the last transmission of the PDCCH; alternatively, for the multi-transmission PDSCH, determine that the spatial information of each PDSCH transmission corresponds to one of the multiple spatial information of the multiple transmissions of the PDCCH according to a predetermined rule. For example, corresponding alternately. For example, if the TCI state of the first transmission of the PDCCH is TCI state 1 and the TCI state of the second transmission is TCI state 2, then the spatial information of the first transmission of the multi-transmission PDSCH corresponds to TCI state 1, the spatial information of the second transmission corresponds to TCI state 2, the spatial information of the third transmission corresponds to TCI state 1, and so on, corresponding alternately. Specifically, reference can be made to Table 1.

[0081] Table 1.

[0082]

[0083]

[0084] In a multi-TRP scenario, the control signaling can come from multiple TRPs, which is called multi-TRP with multi-DCI scheduling, that is, each TRP sends its own PDCCH, and each PDCCH schedules its own PDSCH, AP CSI-RS, PUSCH or SRS. The multiple CORESETs configured for the UE are associated with different RRC parameters CORESETPoolIndex, corresponding to different TRPs.

[0085] In this embodiment, in the case where the detected DCI does not indicate the TCI state or indicates one TCI state in the detected DCI, if the symbol interval offset1 between the last OFDM symbol of the PDCCH where the DCI is located and the first OFDM symbol of the single-slot or multi-slot PDSCH scheduled by the PDCCH is less than the first threshold timeDurationForQCL, and the UE configures multiple first identifiers (CORESETPoolIndex) and the activated TCI code points all correspond to only one TCI state or QCL, the spatial information of the PDSCH is similar to that without configuring multiple first identifiers. The difference is that in this case, the TCI state or QCL of the PDSCH corresponds to one or more TCI states corresponding to the CORESET that is associated with the monitored search space of the nearest time unit and belongs to the same CORESETPoolIndex as the PDSCH. As shown in Table 2. In this embodiment, the target object in Table 2 is the PDSCH.

[0086] Table 2.

[0087]

[0088] In a multi-TRP scenario, the control signaling can also come from one TRP, which is called multi-TRP with single DCI scheduling, that is, a PDCCH is sent by one TRP to schedule a PDSCH. The PDSCH includes various multi-TRP transmission schemes: data of different layers of the PDSCH comes from different TRPs; or data on different frequency-domain subcarriers comes from different TRPs; or each time-domain repetition comes from different TRPs. In this case, the MAC CE activates up to 8 TCI code points, and at least one TCI code point corresponds to two TCI states. When the TCI code point indicated by the TCI field in the detected DCI corresponds to two TCI states and it is indicated that one of the TCI states contains "QCL-TypeD" (i.e., QCL of the spatial beam type), it indicates the PDSCH scheduling the above multi-TRP transmission, and the specific transmission scheme is determined by other means, such as high-layer parameter configuration. If the above time offset offset1 is less than timeDurationForQCL, the UE can receive the PDSCH using multiple default receive beams, that is, the UE can consider that the DMRS ports of the PDSCH of the serving cell and the RS of the two TCI states indicated by the code point with the smallest index among the code points containing two different TCI states are QCL. As shown in Table 3.

[0089] Table 3. At least one activated TCI code point corresponds to 2 TCI states (MTRP with single DCI)

[0090]

[0091] In addition, the target object can also be the cross-carrier scheduling PDSCH. If the PDCCH transmitting the transmission scheduling DCI is on the first CC, and the PDSCH scheduled by this DCI is on the second CC (where the first CC and the second CC are different), and the UE is configured to allow the use of the default beam for cross-carrier scheduling, then currently the above Offset1 is less than timeDurationForQCL + Δ1, where Δ1 is the time adjustment value due to the different subcarrier spacings of the two CCs. And when the DCI does not contain the TCI field, if there are multiple TCI states for the PDSCH activated on the activated BWP on the second CC. Then the QCL for the UE to receive the PDSCH can correspond to one of the multiple TCI states, for example, the first one, or the QCL for the UE to receive the PDSCH corresponds to the one with the strongest signal among the multiple TCI states. In this embodiment, the reference resource is multiple activated spatial information, specifically, multiple TCI states for the PDSCH.

[0092] Embodiment 2

[0093] In this embodiment, taking the target object as the Channel State Information (CSI) Reference Signal (RS) as an example, the technical solution provided in the embodiments of the present application will be described.

[0094] For the case where the parameter repetition of CSI-RS is not configured as "on", if a UE is configured with a CSI-RS resource, and this CSI-RS resource is in the same one or more OFDM symbols as a search space associated with a CORESET, then the spatial information of this CSI-RS can be determined according to this CORESET (i.e., the reference resource). If this CORESET corresponds to multiple TCI states or QCLs, the UE can assume that this CSI-RS is QCL-TypeD with one of the multiple TCI states or QCLs corresponding to the DMRS of the PDCCH of all search space sets associated with this CORESET. If QCL-TypeD is available, for example, the first TCI state or QCL, or one or more TCI states or QCLs with the strongest signal strength among the multiple TCI states or QCLs corresponding to this CORESET. That is, the UE can determine that the spatial information of this CSI-RS corresponds to one or more TCI states or QCLs of this CORESET, and these one or more TCI states or QCLs can be pre-specified, for example, the first one, or one or more TCI states or QCLs with the strongest signal strength among the multiple TCI states or QCLs corresponding to this CORESET.

[0095] The technical solution provided in this embodiment is also applicable when CSI-RS and CORESET are on different intra-band carriers.

[0096] Embodiment 3

[0097] In this embodiment, taking the target object as the aperiodic CSI-RS (A-CSI-RS) associated with the CSI trigger state indicated by DCI as an example, the technical solution provided in the embodiments of the present application will be described.

[0098] In this embodiment, the A-CSI-RS associated with the CSI trigger state indicated in the DCI detected by the UE, where at least one CORESET is configured in the BWP where the A-CSI-RS is located.

[0099] In this embodiment, if the scheduling offset of the A-CSI-RS is less than a second preset value, the spatial information of the A-CSI-RS is determined by the CORESET configured by the BWP where the A-CSI-RS is located, where the scheduling offset is the number of symbols between the last symbol of the PDCCH transmitting the DCI and the first symbol of the A-CSI-RS resource in the CSI-RS resource set configuration parameter that does not configure the transmission information (trs-Info).

[0100] In this embodiment, if the UE is not configured with multiple CORESETPoolIndex (i.e., the first identifier) and all the activated TCI code points only correspond to one TCI state, if the A-CSI-RS does not have the same OFDM symbol as other downlink signals, and at least one CORESET is configured in the BWP where the A-CSI-RS is located, if the scheduling offset offset2 is less than the second preset value (i.e., threshold 2), the spatial information of the A-CSI-RS can be determined according to the methods 1-1-1, 2-1-1 or 2-1-2 in Table 1 above. Specifically, as shown in Table 4.

[0101] Table 4.

[0102]

[0103] Among them, other downlink signals include: PDSCH with a scheduling offset greater than or equal to timeDurationForQCL, periodic CSI-RS (P-CSI-RS), semi-persistent CSI-RS (SP-CSI-RS), and AP-CSI-RS with a scheduling offset greater than or equal to threshold 2.

[0104] Among them, when the UE reports that the threshold value beamSwitchTiming is one of {14, 28, 48} and the network is not configured with enableBeamSwitchTiming-r16, the threshold 2 is the threshold value beamSwitchTiming reported by the UE; when the UE reports that the threshold value beamSwitchTiming is one of {224, 336} and the network is not configured with enableBeamSwitchTiming-r16, the threshold 2 is 48. If the PDCCH triggering the A-CSI-RS has a different subcarrier spacing from the A-CSI-RS (such as the case that may occur in cross-carrier scheduling), the threshold 2 is beamSwitchTiming + Δ2 (Δ2 is the time adjustment value for different subcarrier spacings).

[0105] In the case where the UE is configured with multiple CORESETPoolIndex (i.e., the first identifier) and uses multi-DCI scheduling for MTRP,

[0106] In this embodiment, if the A-CSI-RS does not have the same OFDM symbol as other downlink signals, and at least one CORESET is configured in the BWP where the A-CSI-RS is located, if the scheduling offset offset2 is less than a second preset value (i.e., threshold 2), the spatial information of the A-CSI-RS can be determined according to the methods 1-1-1, 2-1-1, or 2-1-2 in Table 1 above, where the CORESET in Table 1 is the CORESET corresponding to the same first identifier as the target object (the A-CSI-RS in this embodiment).

[0107] Embodiment 4

[0108] In this embodiment, taking the PUCCH as the target object, the technical solution provided in the embodiments of the present application will be described.

[0109] If a UE:

[0110] (1) reports beamCorrespondenceWithoutUL-BeamSweeping, and

[0111] (2) is not configured with pathlossReferenceRSs in PUCCH-PowerControl, and

[0112] (3) is configured with enableDefaultBeamPlForPUCCH, and

[0113] (4) is not configured with PUCCH-SpatialRelationInfo

[0114] Then the spatial information (spatial relation) of the PUCCH sent by the UE is determined according to the spatial information corresponding to the reference resource, where the reference resource includes: a first target CORESET, and the first target CORESET is the CORESET with the smallest identifier on the active downlink BWP of the cell that sends the PUCCH.

[0115] In this embodiment, determining that the first spatial information of the target object corresponds to the target spatial information may include one of the following:

[0116] (1) determining that the first spatial information of a single-transmission PUCCH or a multi-transmission PUCCH corresponds to the target spatial information; for example, for a single PUCCH transmission or multiple PUCCH transmissions, the spatial relation of the PUCCH transmission corresponds to one of the TCI states or QCLs corresponding to the above CORESET, such as the first TCI state or the TCI state with stronger signal corresponding to multiple TCI states.

[0117] (2) For the PUCCH with multiple transmissions, determine that the first spatial information of each PUCCH transmission corresponds to one of the multiple spatial information of the first target CORESET according to a predetermined rule. For example, for multiple PUCCH retransmissions, the spatial relationship of each PUCCH transmission corresponds to one of the TCI states or QCLs of the multiple TCI states or QCLs corresponding to the above CORESET according to the rule, such as alternating correspondence.

[0118] Embodiment 5

[0119] In this embodiment, taking the target object as PUSCH as an example, the technical solution provided by the embodiments of the present application will be described.

[0120] In a possible implementation manner of this embodiment, if the detected DCI is DCI format 0_0, since there is no PUSCH transmission spatial relationship indication (SRI) in the uplink scheduling DCI format 0_0, therefore, the spatial relationship of the PUSCH scheduled by DCI format 0_0 is determined according to the spatial information corresponding to the target PUCCH resource (i.e., the reference resource of the PUSCH) on the active uplink BWP of the cell transmitting the PUSCH, where the target PUCCH resource is the PUCCH resource with the smallest identifier on the active uplink BWP of this cell. In this case, determining that the first spatial information of the target object corresponds to the target spatial information may include any one of the following:

[0121] (1) Determine that the first spatial information of the PUSCH with a single transmission or the PUSCH with multiple transmissions corresponds to one of the multiple second spatial information corresponding to the target PUCCH resource; the spatial relationship of transmitting a single PUSCH or transmitting multiple PUSCHs corresponds to one of the multiple spatial relationships of this target PUCCH resource, such as the first one or pre-configured;

[0122] (2) For the PUSCH with multiple transmissions, determine that the first spatial information of each PUSCH transmission corresponds to one of the multiple second spatial information corresponding to the target PUCCH resource according to a predetermined rule. For example, when transmitting multiple PUSCHs, the spatial relationship of each PUSCH transmission opportunity corresponds to one of the multiple spatial relationships of this PUCCH resource according to the rule, such as alternating correspondence.

[0123] In another possible implementation of this embodiment, if the UE high-layer parameter enableDefaultBeamPlForPUSCH0_0 in the RRC connected state is configured to "enabled", and no PUCCH resources are configured on the active uplink BWP or no spatial relationship is configured for all PUCCH resources configured on the active uplink BWP, the reference resource of the PUSCH includes: a second target CORESET, where the second target CORESET is the CORESET with the smallest identifier on the active downlink BWP of the CC or cell that sends the PUSCH. If there are multiple TCI states corresponding to the CORESET with the smallest identifier, it is determined that the first spatial information of the target object corresponds to the target spatial information, including any of the following:

[0124] (1) Determine that the first spatial information of the PUSCH for single transmission or the PUSCH for multiple transmissions corresponds to the target spatial information; for example, for single PUSCH transmission or multiple PUSCH transmissions, the spatial relationship of the PUSCH transmission corresponds to one of the TCI states or QCLs corresponding to the multiple TCI states or QCLs of the above second CORESET, such as the first TCI state or the TCI state with stronger signal among multiple TCI states.

[0125] (2) For the PUSCH for multiple transmissions, determine that the first spatial information of each PUSCH transmission corresponds to one of the multiple spatial information of the second target CORESET according to a predetermined rule. For example, for multiple PUSCH retransmissions, the spatial relationship of each PUSCH transmission corresponds to one of the TCI states or QCLs corresponding to the multiple TCI states or QCLs of the above second CORESET according to the rule, such as corresponding alternately.

[0126] Embodiment 6

[0127] In this embodiment, taking the target object as the sounding reference signal (SRS) as an example, the technical solution provided by the embodiments of the present application is described.

[0128] When the UE satisfies:

[0129] (1) The high-layer parameter enableDefaultBeamPlForSRS is configured to "enabled", and

[0130] (2) FR2 is not configured with the high-layer parameter spatialRelationInfo. Except when the parameter usage in the SRS-ResourceSet is set to "beamManagement" or {set to "nonCodebook" and is configured with an associated CSI-RS}, or the SRS resource is configured with an SRS-PosResourceSet-r16, and

[0131] (3) is not configured with multiple different values of CORESETPoolIndex (non-MTRP with multi-DCI scheduling), and

[0132] (4) is not configured with a TCI codebook containing two corresponding TCI states (non-MTRP with single-DCI scheduling),

[0133] then the spatial relation of the SRS is determined according to the smallest CORESET (i.e., the third target CORESET) identified on the uplink BWP activated on the carrier or cell transmitting the SRS. If the third target CORESET corresponds to multiple TCI states or QCLs, determining that the first spatial information of the target object corresponds to the target spatial information may include any of the following:

[0134] (1) The spatial relation of transmitting an SRS resource or the spatial relations of multiple repeated transmissions of an SRS resource or the spatial relations of transmitting multiple SRS resources corresponds to a reference signal (RS) with "QCL-TypeD". If QCL-TypeD is available, the RS corresponds to one of the multiple TCI states or QCLs corresponding to the third target CORESET, such as the first TCI state, or the TCI state with the strongest signal among the multiple TCI states.

[0135] (2) The spatial relation of each SRS repeated transmission in multiple repeated transmissions of an SRS resource or the spatial relation of each SRS resource in transmitting multiple SRS resources respectively corresponds to an RS with "QCL-TypeD" according to rules. If QCL-TypeD is available, each RS respectively corresponds to one of the multiple TCI states or QCLs corresponding to the third target CORESET according to rules, such as corresponding alternately.

[0136] Embodiment Seven

[0137] In this embodiment, taking the target object as CORESET#0 as an example, the technical solution provided in the embodiments of the present application is described.

[0138] Among CORESETs, CORESET #0 may have characteristics different from other CORESETs. For example, CORESET #0 may be provided as part of the initial bandwidth part (BWP) setting by the master information block (MIB) transmitted on the physical broadcast channel (PBCH). CORESET #0 may be a CORESET for monitoring the physical downlink control channel (PDCCH) for scheduling the physical downlink shared channel (PDSCH) carrying the system information block (SIB1), and may be used to receive other system information and additional configuration information. On the other hand, another CORESET may be provided through dedicated RRC signaling, and this CORESET may be used to receive UE-specific control information. Additionally, CORESET #0 may not have an explicit setting for the TCI state. Therefore, it is necessary to determine the spatial information of CORESET #0. Since the TCI state of CORESET #0 is related to the reference signal associated with the synchronization signal / physical broadcast channel block (SSB, also referred to as the synchronization signal block), the TCI state of CORESET #0 is determined according to the spatial information corresponding to the SSB (i.e., the reference resource).

[0139] When multiple spatial information are configured for the search space of CORESET #0 (i.e., SS #0), for example, multiple tracking reference signals (TRS) are configured for SS0, each TRS is associated with an SSB, and different associated SSBs are different, and different SSBs are configured with different spatial information. In this case, the reference resource (i.e., SSB) of CORESET #0 corresponds to multiple spatial information. In this embodiment, it is determined that the spatial information of CORESET #0 (such as the TCI state or QCL) corresponds to the spatial information of one of the SSBs. For example, a pre-specified SSB. When the UE detects this SSB, it can determine that the spatial information of CORESET #0 corresponds to the spatial information of this SSB according to the spatial information of this SSB (such as the receiving beam).

[0140] It should be noted that although the above embodiments are described by taking the terminal as an example, it is not limited thereto. The network-side device may adopt a corresponding manner to that of the terminal to determine the first spatial information of the target object and perform the transmission of the target object according to the first spatial information, which will not be elaborated in detail in the embodiments of this application.

[0141] Figure 3 A schematic flowchart showing a method for determining a detection opportunity in an embodiment of this application. This method 300 may be executed by a terminal. In other words, this method may be executed by software or hardware installed on the terminal. As Figure 3 shown, this method may include the following steps.

[0142] S310. When multiple spatial relationships are configured in the search space associated with CORESET #0, and the multiple spatial relationships correspond to multiple synchronization signal blocks, and different synchronization signal blocks correspond to different spatial relationships, the terminal determines the detection opportunity for the search space according to one of the synchronization signal blocks, or determines multiple detection opportunities for the search space according to the multiple synchronization signal blocks.

[0143] For example, when the terminal detects a synchronization signal block, it can determine the detection opportunity for the search space of CORESET #0 according to the detected synchronization signal block, and detect CORESET #0 at the corresponding detection opportunity. Alternatively, the terminal can also determine multiple detection opportunities for the search space of CORESET #0 according to the multiple detected SSBs.

[0144] In a possible implementation, the terminal determines the detection opportunity for the search space according to one of the synchronization signal blocks, including: determining the time-frequency resources and spatial relationship of the detection opportunity for the search space according to the one synchronization signal block; determining multiple detection opportunities for the search space according to the multiple synchronization signal blocks, including: determining the time-frequency resources and spatial relationship of the multiple detection opportunities for the search space according to the multiple synchronization signal blocks. That is, in this possible implementation, determining the detection opportunity for the search space includes: determining the time-frequency resources and spatial relationship of the detection opportunity.

[0145] For non-broadcast PDCCH, the network-side device and the UE have the same understanding of SSB / CORESET #0 / SS #0 in the connected mode. Therefore, in this embodiment, the detection opportunity for SS #0 of CORESET #0 can be determined according to the detected SSB. When multiple SSBs are configured, one detection opportunity can be determined according to one of the SSBs, or multiple detection opportunities can be determined according to multiple SSBs.

[0146] Through the detection opportunity determination method provided by the embodiments of the present application, when multiple spatial relationships are configured in the search space associated with CORESET #0, and the multiple spatial relationships correspond to multiple synchronization signal blocks, and different synchronization signal blocks correspond to different spatial relationships, the detection opportunity for the search space can be determined according to one of the synchronization signal blocks, or multiple detection opportunities for the search space can be determined according to the multiple synchronization signal blocks.

[0147] It should be noted that for the transmission method provided by the embodiments of the present application, the execution subject can be a transmission device, or a control module in the transmission device for executing the transmission method. In the embodiments of the present application, the transmission device provided by the embodiments of the present application is described by taking the transmission device as the execution subject of the transmission method.

[0148] Figure 4 This is a schematic structural diagram of a transmission device provided by an embodiment of the present application. As Figure 4 shown, the transmission device 400 may include a first determination module 401 and a transmission module 402.

[0149] In an embodiment of the present application, the first determination module 401 is configured to determine that the first spatial information of the target object corresponds to the target spatial information when the first spatial information of the target object is determined according to the second spatial information corresponding to the reference resource; wherein, the reference resource corresponds to multiple second spatial information, and the target spatial information is one or more of the multiple second spatial information; the transmission module 402 is configured to transmit the target object by using the first spatial information corresponding to the target spatial information.

[0150] In a possible implementation manner, the target spatial information is one or more second spatial information with the strongest signal strength among the multiple second spatial information; or, the target spatial information is one or more second spatial information specified in advance among the multiple second spatial information.

[0151] In a possible implementation manner, the reference resource includes multiple sub-reference resources; the target spatial information is the second spatial information corresponding to one or more preset sub-reference resources among the multiple sub-reference resources; or, the target spatial information is one or more second spatial information with the strongest signal strength among the multiple second spatial information corresponding to the multiple sub-reference resources.

[0152] In a possible implementation manner, the number of the second spatial information corresponding to the preset sub-reference resources is set or agreed in advance to be one or more.

[0153] In a possible implementation manner, the target object has multiple transmission resources, and the first spatial information used for transmission of the target object on different transmission resources corresponds to the multiple second spatial information included in the target spatial information according to a mapping rule, wherein the multiple transmission resources include at least one of the following: multiple time-division multiplexed transmission resources, multiple frequency-division multiplexed transmission resources, multiple space-division multiplexed transmission resources, and multiple code-division multiplexed transmission resources.

[0154] In a possible implementation manner, the target object has one transmission resource or multiple transmission resources, and the target spatial information is one of the multiple second spatial information.

[0155] In a possible implementation manner, if the terminal for transmitting the target object is configured with multiple first identifiers, the reference resource corresponds to the same first identifier as the target object.

[0156] In a possible implementation, the reference resource and the target object are in the same time unit.

[0157] In a possible implementation, one time unit includes any one of the following: one time slot, multiple time slots, partial OFDM symbols in one time slot, partial OFDM symbols in multiple time slots.

[0158] In a possible implementation, the target object includes any one of the following: an uplink channel, a downlink channel, an uplink signal, a downlink signal, a control resource set CORESET#0.

[0159] In a possible implementation, the reference resource includes any one of the following: a CORESET, a search space, a PDCCH for scheduling the target object, a PUCCH, configured and / or activated spatial information, an SSB.

[0160] In a possible implementation, the spatial information includes one of the following: a transmission configuration indication (TCI) state, a quasi co-location (QCL), a spatial relationship.

[0161] The transmission device in the embodiments of the present application may be a device, or a component, an integrated circuit, or a chip in a communication device. The device may be a network-side device or a terminal. The terminal may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of the terminal 11 listed above. The non-mobile terminal may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The embodiments of the present application do not make specific limitations.

[0162] The transmission device in the embodiments of the present application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems. The embodiments of the present application do not make specific limitations.

[0163] The transmission device provided by the embodiments of the present application can implement Figure 2 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be described in detail here.

[0164] It should be noted that for the method for determining a detection opportunity provided in the embodiments of the present application, the execution subject may be a device for determining a detection opportunity, or a control module in the device for determining a detection opportunity that executes the method for determining a detection opportunity. In the embodiments of the present application, the method for determining a detection opportunity executed by the device for determining a detection opportunity is taken as an example to illustrate the device for determining a detection opportunity provided in the embodiments of the present application.

[0165] Figure 5 FIG. is a schematic structural diagram of a device for determining a detection opportunity provided in an embodiment of the present application, as Figure 5 shown, the detection opportunity determination device 500 may include a second determination module 501 and a third determination module 502.

[0166] In the embodiments of the present application, the second determination module 501 is configured to determine multiple spatial relationships of a search space associated with CORESET #0, the multiple spatial relationships corresponding to multiple synchronization signal blocks, and different synchronization signal blocks corresponding to different spatial relationships; the third determination module 502 is configured to determine a detection opportunity of the search space according to one of the synchronization signal blocks, or determine multiple detection opportunities of the search space according to the multiple synchronization signal blocks.

[0167] In a possible implementation manner, the third determination module 502 determines the detection opportunity of the search space, including: determining the time-frequency resources and spatial relationships of the detection opportunity according to the one synchronization signal block; or determining the time-frequency resources and spatial relationships of the multiple detection opportunities according to the multiple synchronization signal blocks.

[0168] The detection opportunity determination device in the embodiments of the present application may be a device, or a component, an integrated circuit, or a chip in a terminal. The device may be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal may include, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc., which are not specifically limited in the embodiments of the present application.

[0169] The transmission device in the embodiments of the present application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

[0170] The transmission device provided in the embodiments of the present application can implement Figure 3The various processes implemented by the method embodiments achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0171] Optionally, as Figure 6 shown, an embodiment of the present application further provides a communication device 600, including a processor 601, a memory 602, and a program or instruction stored on the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, it implements the various processes of the above-mentioned transmission method or the method embodiment for determining a detection opportunity, and can achieve the same technical effects. When the communication device 600 is a network-side device, when the program or instruction is executed by the processor 601, it implements the various processes of the above-mentioned transmission method embodiment, and can achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0172] Figure 7 It is a schematic diagram of the hardware structure of a terminal according to an embodiment of the present application.

[0173] The terminal 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710, etc.

[0174] Those skilled in the art can understand that the terminal 700 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 710 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 7 The terminal structure shown in does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0175] It should be understood that in the embodiments of the present application, the input unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. The other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here.

[0176] In the embodiments of the present application, after receiving the downlink data from the network side device, the radio frequency unit 701 sends it to the processor 710 for processing; in addition, it sends the uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0177] The memory 709 can be used to store software programs or instructions and various data. The memory 709 mainly includes a program or instruction storage area and a data storage area. Among them, the program or instruction storage area can store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a high-speed random access memory, and may also include a non-volatile memory. The non-volatile memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid state storage devices.

[0178] The processor 710 may include one or more processing units; optionally, the processor 710 may integrate an application processor and a modulation / demodulation processor. Among them, the application processor mainly processes the operating system, the user interface, and applications or instructions, etc., and the modulation / demodulation processor mainly processes wireless communications, such as a baseband processor. It can be understood that the above modulation / demodulation processor may not be integrated into the processor 710 either.

[0179] Among them, the processor 710 is configured to determine that the first spatial information of the target object corresponds to the target spatial information when the first spatial information of the target object is determined according to the second spatial information corresponding to the reference resource, and there are multiple second spatial information corresponding to the reference resource; wherein, the target spatial information is one or more of the multiple second spatial information.

[0180] The radio frequency unit 701 is configured to transmit the target object by using the first spatial information corresponding to the target spatial information.

[0181] In a possible implementation manner, the target spatial information is one or more of the second spatial information with the strongest signal strength among the multiple second spatial information; or, the target spatial information is one or more of the second spatial information specified in advance among the multiple second spatial information.

[0182] In a possible implementation manner, the reference resource includes multiple sub-reference resources; the target spatial information is the second spatial information corresponding to one or more preset sub-reference resources among the multiple sub-reference resources; or, the target spatial information is one or more of the second spatial information with the strongest signal strength among the multiple second spatial information corresponding to the multiple sub-reference resources.

[0183] In a possible implementation manner, the number of the second spatial information corresponding to the preset sub-reference resources is set or agreed in advance to be one or more.

[0184] In a possible implementation manner, the target object has multiple transmission resources, and the first spatial information used for transmission of the target object on different transmission resources corresponds to the multiple second spatial information included in the target spatial information according to a mapping rule, where the transmission resources include at least one of the following: time resource, frequency resource, and spatial resource.

[0185] In a possible implementation manner, the target object has one transmission resource or multiple transmission resources, and the target spatial information is one of the multiple second spatial information.

[0186] In a possible implementation manner, if the terminal for transmitting the target object is configured with multiple first identifiers, the reference resource corresponds to the same first identifier as the target object.

[0187] Through the terminal provided by the embodiments of the present application, when the first spatial information of the target object is determined according to the second spatial information corresponding to the reference resource, and there are multiple second spatial information corresponding to the reference resource, the communication device determines that the first spatial information of the target object corresponds to one or more of the multiple second spatial information, and then transmits the target object using the first spatial information corresponding to one or more of the multiple second spatial information, so that when the reference resource of a certain uplink and downlink channel or uplink and downlink signal (i.e., the target object) corresponds to multiple spatial information, the spatial information of the uplink and downlink channel or uplink and downlink signal can be determined.

[0188] Specifically, the embodiments of the present application also provide a network-side device. As Figure 8 shown, the network device 800 includes: an antenna 801, a radio frequency device 802, and a baseband device 803. The antenna 801 is connected to the radio frequency device 802. In the uplink direction, the radio frequency device 802 receives information through the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be sent and sends it to the radio frequency device 802. After the radio frequency device 802 processes the received information, it is sent out through the antenna 801.

[0189] The above frequency band processing device may be located in the baseband device 803. The methods performed by the network-side device in the above embodiments may be implemented in the baseband device 803. The baseband device 803 includes a processor 804 and a memory 805.

[0190] The baseband device 803 may include, for example, at least one baseband board, and multiple chips are provided on the baseband board. As Figure 8 shown, one of the chips is, for example, the processor 804, which is connected to the memory 805 to call the program in the memory 805 and execute the operations of the network device shown in the above method embodiments.

[0191] The baseband device 803 may further include a network interface 806 for interacting with the radio frequency device 802. The interface is, for example, a common public radio interface (CPRI for short).

[0192] Specifically, the network-side device of the embodiments of the present invention further includes: instructions or programs stored on the memory 805 and executable on the processor 804. The processor 804 calls the instructions or programs in the memory 805 to execute Figure 4 the methods performed by the modules shown, and achieves the same technical effects. To avoid repetition, they are not described herein again.

[0193] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned transmission method embodiment, or implements each process of the above-mentioned method embodiment for determining a detection opportunity, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0194] Wherein, the processor is the processor in the communication device described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc, etc.

[0195] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a communication device program or instruction to implement each process of the above-mentioned transmission method embodiment, or implement each process of the above-mentioned method embodiment for determining a detection opportunity, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0196] The embodiments of the present application further provide a computer program product, which includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, it implements each process of the above-mentioned transmission method embodiment, or implements each process of the above-mentioned method embodiment for determining a detection opportunity, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0197] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system chip, a chip system, or a system-on-chip.

[0198] It should be noted that, in this document, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0199] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0200] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A transmission method, characterized in that, the method includes: when the first spatial information of the target object cannot be determined using the spatial information indicated in the downlink control information, or when the first spatial information of the target object is not indicated in the downlink control information, the communication device determines the first spatial information of the target object according to the second spatial information corresponding to the reference resource, and the first spatial information of the target object corresponds to the target spatial information; wherein, the reference resource corresponds to multiple second spatial information, and the target spatial information is one or more of the multiple second spatial information, wherein, the reference resource is a physical downlink control channel PDCCH; the PDCCH belongs to a search space or multiple transmissions of the PDCCH belong to a search space, and the search space is associated with a CORESET, the CORESET corresponds to at least two second spatial information, and the target spatial information is one or more second spatial information specified in advance among the multiple second spatial information; or, multiple transmissions of the PDCCH belong to different search spaces, and each search space is respectively associated with a CORESET, each CORESET corresponds to a second spatial information, and the target spatial information is the second spatial information corresponding to the CORESET with the smallest CORESET ID among the multiple CORESETS; transmit the target object using the determined first spatial information.

2. The method according to claim 1, characterized in that, the reference resource includes multiple sub-reference resources; the target spatial information is the second spatial information corresponding to one or more preset sub-reference resources among the multiple sub-reference resources; or, the target spatial information is one or more second spatial information with the strongest signal strength among the multiple second spatial information corresponding to the multiple sub-reference resources.

3. The method according to claim 2, characterized in that, the number of the second spatial information corresponding to the preset sub-reference resources is preset or agreed to be one or more.

4. The method according to claim 1, characterized in that, the target object has multiple transmission resources, and the first spatial information used for transmission of the target object on different transmission resources corresponds to the multiple second spatial information included in the target spatial information according to a mapping rule, wherein, the multiple transmission resources include at least one of the following: multiple time-division multiplexed transmission resources, multiple frequency-division multiplexed transmission resources, multiple space-division multiplexed transmission resources, and multiple code-division multiplexed transmission resources.

5. The method according to claim 1, characterized in that, the target object has one transmission resource or multiple transmission resources, and the target spatial information is one of the multiple second spatial information.

6. The method according to any one of claims 1 to 5, characterized in that, if the terminal for transmitting the target object is configured with multiple first identifiers, the reference resource corresponds to the same first identifier as the target object.

7. The method according to any one of claims 1 to 5, characterized in that, The reference resource and the target object are in the same time unit.

8. The method according to claim 7, wherein, One of the time units includes any one of the following: one time slot, multiple time slots, partial orthogonal frequency division multiplexing (OFDM) symbols in one time slot, and partial OFDM symbols in multiple time slots.

9. The method according to any one of claims 1 to 5, wherein, The target object includes any one of the following: an uplink channel, a downlink channel, an uplink signal, a downlink signal, and a control resource set (CORESET) #0.

10. The method according to any one of claims 1 to 5, wherein, The first spatial information includes one of the following: a transmission configuration indication (TCI) state, a quasi co-location (QCL), and a spatial relationship.

11. A transmission device, wherein, comprising: A first determination module, configured to, when the spatial information indicated in the downlink control information cannot be used to determine the first spatial information of the target object, or when the first spatial information of the target object is not indicated in the downlink control information, determine the first spatial information of the target object according to the second spatial information corresponding to the reference resource by a communication device, where the first spatial information of the target object corresponds to the target spatial information; wherein, the reference resource corresponds to multiple second spatial information, and the target spatial information is one or more of the multiple second spatial information, where The reference resource is a physical downlink control channel (PDCCH); the PDCCH belongs to a search space or multiple transmissions of the PDCCH belong to a search space, and the search space is associated with a CORESET, the CORESET corresponds to at least two second spatial information, and the target spatial information is one or more second spatial information specified in advance from the multiple second spatial information; or Multiple transmissions of the PDCCH belong to different search spaces, and each search space is respectively associated with a CORESET, each CORESET corresponds to a second spatial information, and the target spatial information is the second spatial information corresponding to the CORESET with the smallest CORESET ID among the multiple CORESETs; A transmission module, configured to transmit the target object by using the determined first spatial information.

12. The device according to claim 11, wherein, The reference resource includes multiple sub-reference resources; The target spatial information is the second spatial information corresponding to one or more preset sub-reference resources among the multiple sub-reference resources; or the target spatial information is one or more second spatial information with the strongest signal strength among the multiple second spatial information corresponding to the multiple sub-reference resources.

13. The device according to claim 12, wherein, The number of the second spatial information corresponding to the preset sub-reference resources is preset or agreed to be one or more.

14. The device according to claim 11, wherein, The target object has multiple transmission resources, and the first spatial information used by the target object for transmission on different transmission resources corresponds to the multiple second spatial information included in the target spatial information according to a mapping rule, where the multiple transmission resources include at least one of the following: multiple time-division multiplexed transmission resources, multiple frequency-division multiplexed transmission resources, multiple space-division multiplexed transmission resources, and multiple code-division multiplexed transmission resources.

15. The apparatus according to claim 11, wherein, the target object has one transmission resource or multiple transmission resources, and the target spatial information is one of the multiple second spatial information.

16. The apparatus according to any one of claims 11 to 15, wherein, if the terminal for transmitting the target object is configured with multiple first identifiers, the reference resource corresponds to the same first identifier as the target object.

17. The apparatus according to any one of claims 11 to 15, wherein, the reference resource and the target object are in the same time unit.

18. The apparatus according to claim 17, wherein, one time unit includes any one of the following: one time slot, multiple time slots, partial orthogonal frequency division multiplexing (OFDM) symbols in one time slot, and partial OFDM symbols in multiple time slots.

19. The apparatus according to any one of claims 11 to 15, wherein, the target object includes any one of the following: an uplink channel, a downlink channel, an uplink signal, a downlink signal, and a control resource set (CORESET) #0.

20. The apparatus according to any one of claims 11 to 15, wherein, the spatial information includes one of the following: a transmission configuration indication (TCI) state, a quasi co-location (QCL), and a spatial relationship.

21. A communication device, wherein, it includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the transmission method according to any one of claims 1 to 10 are implemented.

22. A readable storage medium, wherein, a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the transmission method according to any one of claims 1 to 10 are implemented.

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