Method, device and storage medium for determining transmission configuration indication status

Abstract

The present disclosure relates to a TCI state determination method, device and storage medium. The TCI state determination method includes: receiving first configuration information, the first configuration information is used to configure at least two SS sets with a link relationship, and the CORESETPoolIndex of the CORESETs corresponding to two of the at least two SS sets is different; determining MAC CE, the MAC CE is used to indicate at least one TCI state corresponding to each code point in at least one code point, if at least one code point is configured to appear, it is carried in the TCI domain of DCI, and the DCI is transmitted by the PDCCH candidate resources in the at least two SS sets with a link relationship; determining the default TCI state of the PDSCH scheduled by the DCI. The determination of the default TCI state is achieved through the present disclosure.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, device, and storage medium for determining a transmission configuration indication (TCI) status. Background Art

[0002] In New Radio (NR) technology, for example, when the communication band is in frequency range 2, beam-based transmission and reception are required to ensure coverage due to the rapid attenuation of high-frequency channels. When a network device (such as a base station) has multiple Transmission Reception Points (TRPs), multiple TRPs can be used to provide services to terminals, including using multiple TRPs to send physical downlink control channels (PDCCHs) to terminals.

[0003] In the related art, the use of multiple TRPs for repeated transmission of PDCCH (Multi-TRP PDCCHrepetition) is supported. For example, in Multi-TRP PDCCH repetition, two control resource sets (ControlResource Set, CORESET) are configured, and the TCI state (state) corresponding to the CORESET is configured. Each CORESET is configured with a corresponding TCI state, and the search space set (Search Space set, SS set) is configured to be associated with the two CORESETs respectively. That is, two SS sets with a link relationship are configured, and different CORESETs are associated with different TCI states. Among them, the two SS sets with a link relationship can be understood as two PDCCH candidates with the same PDCCH candidate resource index (candidateindex) in the two SS sets used to send a downlink control information (Downlink ControlInformation, DCI). In the traditional method, the two TCI states (state) of PDSCHrepetition are indicated based on a single downlink control signaling (single-DCI, S-DCI), that is, the control resource set pool index (CORESETPoolIndex) of the CORESET corresponding to all DCIs is the same.

[0004] However, when the CORESETPoolIndex of the CORESETs corresponding to multiple linked SS sets used for PDCCH repetition transmission is different, and the TCI state of PDSCH transmission is configured using different mechanisms, how to determine the default TCI state of the PDSCH scheduled by PDCCH is a problem that needs to be solved. Summary of the Invention

[0005] To overcome the problems existing in the related art, the present disclosure provides a TCI status determination method, device and storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a method for determining a TCI status is provided, the method being executed by a terminal and including:

[0007] Receive first configuration information, where the first configuration information is used to configure at least two search space sets with a linked relationship, where the control resource set pool indexes of the control resource sets corresponding to two of the at least two search space sets are different; determine a MAC CE, where the MAC CE is used to indicate at least one TCI state corresponding to each code point in at least one code point, and if the at least one code point is configured to appear, it is carried in the TCI domain of the DCI, and the DCI is transmitted by the PDCCH candidate resources in the at least two search space sets with a linked relationship; determine a default TCI state of the PDSCH scheduled by the DCI.

[0008] In one embodiment, the default TCI state of the DCI-scheduled PDSCH is determined based on at least one of the TCI state indicated by the MAC CE, the quasi-co-location duration, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0009] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0010] The default TCI state of the DCI-scheduled PDSCH includes:

[0011] The TCI status of the control resource set with the smallest control resource set identifier in the control resource set with the specified control resource set pool index value in the time unit of the search space set that needs to be monitored most recently, and the specified control resource set pool index value is the control resource set pool index value of the control resource set associated with the search space set in the time unit.

[0012] In one embodiment, the specified control resource set pool index value includes at least one of the following:

[0013] A first index value, where the first index value is a control resource set pool index of a control resource set corresponding to a search space set that has no link relationship with any other search space set;

[0014] a second index value, where the second index value is different from the control resource set pool index of the control resource set corresponding to the search space set that has no link relationship with any other search space set, wherein the control resource set pool index values corresponding to at least two search space sets having a link relationship are the second index value, or the control resource set pool index value of the control resource set associated with at least two search space sets having a link relationship is the second index value;

[0015] The designated control resource pool index value is a first control resource pool index value, the first control resource pool index value is a control resource pool index value of a control resource set associated with a search space set corresponding to a first PDCCH candidate resource, the first PDCCH candidate resource is a PDCCH candidate resource whose sending time or end time is a specified time among the at least two PDCCH candidate resources for sending the DCI, and the specified time includes the earliest or latest time;

[0016] The designated control resource set pool index value is a second control resource set pool index value, where the second control resource set pool index value is a control resource set pool index value of a control resource set associated with a search space set having a smallest search space set identifier among the at least two search space sets;

[0017] The designated control resource set pool index value is a third control resource set pool index value, and the third control resource set pool index value is a control resource set pool index value corresponding to a control resource set with a smallest control resource set identifier in control resource sets associated with at least two search space sets.

[0018] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0019] The default TCI state of the DCI-scheduled PDSCH includes:

[0020] In a time unit in which the search space set needs to be monitored most recently, the TCI state of the control resource set with the smallest control resource set identifier among all the control resource sets associated with the search space set in the time unit.

[0021] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the quasi co-location duration, and the DCI does not include a TCI field;

[0022] The default TCI state of the DCI-scheduled PDSCH includes at least one of the following:

[0023] At least one TCI state among at least two TCI states corresponding to at least two search space sets having a link relationship;

[0024] The TCI state of the first control resource set associated with at least two search space sets having a link relationship, wherein the first control resource set is the control resource set corresponding to the search space set with the smallest search space set identifier among the at least two search space sets, or the control resource set with the smallest control resource set identifier among the control resource sets corresponding to the at least two search space sets.

[0025] In one embodiment, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and the terminal is configured to enable two default TCI states;

[0026] The default TCI state of the PDSCH scheduled by the DCI is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MACCE.

[0027] In one embodiment, the MAC CE is used to indicate at least two TCI states corresponding to each code point in at least one code point;

[0028] Each TCI state of the at least two TCI states is used for uplink transmission and / or downlink transmission.

[0029] According to a second aspect of an embodiment of the present disclosure, a method for determining a TCI status is provided. The method is performed by a network device and includes:

[0030] Send first configuration information, where the first configuration information is used to configure at least two search space sets with a linked relationship, where the control resource set pool indexes of the control resource sets corresponding to two of the at least two search space sets are different; determine a MAC CE, where the MAC CE is used to indicate at least one TCI state corresponding to each code point in at least one code point, and if the at least one code point is configured to appear, it is carried in the TCI domain of the DCI, and the DCI is transmitted by the PDCCH candidate resources in the at least two search space sets with a linked relationship; determine a default TCI state of the PDSCH scheduled by the DCI.

[0031] In one embodiment, the default TCI state of the DCI-scheduled PDSCH is determined based on at least one of the TCI state indicated by the MAC CE, the quasi-co-location duration, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0032] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0033] The default TCI state of the DCI-scheduled PDSCH includes:

[0034] The TCI status of the control resource set with the smallest control resource set identifier in the control resource set with the specified control resource set pool index value in the time unit of the search space set that needs to be monitored most recently, and the specified control resource set pool index value is the control resource set pool index value of the control resource set associated with the search space set in the time unit.

[0035] In one embodiment, the specified control resource set pool index value includes at least one of the following:

[0036] A first index value, where the first index value is a control resource set pool index of a control resource set corresponding to a search space set that has no link relationship with any other search space set;

[0037] a second index value, where the second index value is different from the control resource set pool index of the control resource set corresponding to the search space set that has no link relationship with any other search space set, wherein the control resource set pool index values corresponding to at least two search space sets having a link relationship are the second index value, or the control resource set pool index value of the control resource set associated with at least two search space sets having a link relationship is the second index value;

[0038] The designated control resource pool index value is a first control resource pool index value, the first control resource pool index value is a control resource pool index value of a control resource set associated with a search space set corresponding to a first PDCCH candidate resource, the first PDCCH candidate resource is a PDCCH candidate resource whose sending time or end time is a specified time among the at least two PDCCH candidate resources for sending the DCI, and the specified time includes the earliest or latest time;

[0039] The designated control resource set pool index value is a second control resource set pool index value, where the second control resource set pool index value is a control resource set pool index value of a control resource set associated with a search space set having a smallest search space set identifier among the at least two search space sets;

[0040] The designated control resource set pool index value is a third control resource set pool index value, and the third control resource set pool index value is a control resource set pool index value corresponding to a control resource set with a smallest control resource set identifier in control resource sets associated with at least two search space sets.

[0041] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0042] The default TCI state of the DCI-scheduled PDSCH includes:

[0043] In a time unit in which the search space set needs to be monitored most recently, the TCI state of the control resource set with the smallest control resource set identifier among all the control resource sets associated with the search space set in the time unit.

[0044] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the quasi co-location duration, and the DCI does not include a TCI field;

[0045] The default TCI state of the DCI-scheduled PDSCH includes at least one of the following:

[0046] At least one TCI state among at least two TCI states corresponding to at least two search space sets having a link relationship;

[0047] The TCI state of the first control resource set associated with at least two search space sets having a link relationship, wherein the first control resource set is the control resource set corresponding to the search space set with the smallest search space set identifier among the at least two search space sets, or the control resource set with the smallest control resource set identifier among the control resource sets corresponding to the at least two search space sets.

[0048] In one embodiment, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and the terminal is configured to enable two default TCI states;

[0049] The default TCI state of the PDSCH scheduled by the DCI is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MACCE.

[0050] In one embodiment, the MAC CE is used to indicate at least two TCI states corresponding to each code point in at least one code point; each TCI state in the at least two TCI states is used for uplink transmission and / or downlink transmission.

[0051] According to a third aspect of an embodiment of the present disclosure, a TCI status determination device is provided, including:

[0052] A receiving unit is configured to receive first configuration information, where the first configuration information is used to configure at least two search space sets having a linked relationship, wherein control resource set pool indexes of control resource sets corresponding to two of the at least two search space sets are different;

[0053] a processing unit configured to determine a MAC CE, the MAC CE being used to indicate at least one TCI state corresponding to each code point in the at least one code point, and if the at least one code point is configured to be present, carrying the MAC CE in a TCI field of a DCI, the DCI being transmitted by PDCCH candidate resources in the at least two search space sets having a linked relationship;

[0054] The processing unit is further configured to determine a default TCI state of the PDSCH scheduled by the DCI.

[0055] In one embodiment, the default TCI state of the DCI-scheduled PDSCH is determined based on at least one of the TCI state indicated by the MAC CE, the quasi-co-location duration, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0056] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0057] The default TCI state of the DCI-scheduled PDSCH includes:

[0058] The TCI status of the control resource set with the smallest control resource set identifier in the control resource set with the specified control resource set pool index value in the time unit of the search space set that needs to be monitored most recently, and the specified control resource set pool index value is the control resource set pool index value of the control resource set associated with the search space set in the time unit.

[0059] In one embodiment, the specified control resource set pool index value includes at least one of the following:

[0060] A first index value, where the first index value is a control resource set pool index of a control resource set corresponding to a search space set that has no link relationship with any other search space set;

[0061] a second index value, where the second index value is different from the control resource set pool index of the control resource set corresponding to the search space set that has no link relationship with any other search space set, wherein the control resource set pool index values corresponding to at least two search space sets having a link relationship are the second index value, or the control resource set pool index value of the control resource set associated with at least two search space sets having a link relationship is the second index value;

[0062] The designated control resource pool index value is a first control resource pool index value, the first control resource pool index value is a control resource pool index value of a control resource set associated with a search space set corresponding to a first PDCCH candidate resource, the first PDCCH candidate resource is a PDCCH candidate resource whose sending time or end time is a specified time among the at least two PDCCH candidate resources for sending the DCI, and the specified time includes the earliest or latest time;

[0063] The designated control resource set pool index value is a second control resource set pool index value, where the second control resource set pool index value is a control resource set pool index value of a control resource set associated with a search space set having a smallest search space set identifier among the at least two search space sets;

[0064] The designated control resource set pool index value is a third control resource set pool index value, and the third control resource set pool index value is a control resource set pool index value corresponding to a control resource set with a smallest control resource set identifier in control resource sets associated with at least two search space sets.

[0065] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0066] The default TCI state of the DCI-scheduled PDSCH includes:

[0067] In a time unit in which the search space set needs to be monitored most recently, the TCI state of the control resource set with the smallest control resource set identifier among all the control resource sets associated with the search space set in the time unit.

[0068] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the quasi co-location duration, and the DCI does not include a TCI field;

[0069] The default TCI state of the DCI-scheduled PDSCH includes at least one of the following:

[0070] At least one TCI state among at least two TCI states corresponding to at least two search space sets having a link relationship;

[0071] The TCI state of the first control resource set associated with at least two search space sets having a link relationship, wherein the first control resource set is the control resource set corresponding to the search space set with the smallest search space set identifier among the at least two search space sets, or the control resource set with the smallest control resource set identifier among the control resource sets corresponding to the at least two search space sets.

[0072] In one embodiment, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and the terminal is configured to enable two default TCI states;

[0073] The default TCI state of the PDSCH scheduled by the DCI is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MACCE.

[0074] In one embodiment, the MAC CE is used to indicate at least two TCI states corresponding to each code point in at least one code point;

[0075] Each TCI state of the at least two TCI states is used for uplink transmission and / or downlink transmission.

[0076] According to a fourth aspect of an embodiment of the present disclosure, a TCI status determination device is provided, including:

[0077] a sending unit configured to send first configuration information, where the first configuration information is used to configure at least two search space sets having a linked relationship, wherein control resource set pool indexes of control resource sets corresponding to two of the at least two search space sets are different;

[0078] a processing unit configured to determine a MAC CE, the MAC CE being used to indicate at least one TCI state corresponding to each code point in the at least one code point, and if the at least one code point is configured to be present, carrying the MAC CE in a TCI field of a DCI, the DCI being transmitted by PDCCH candidate resources in the at least two search space sets having a linked relationship;

[0079] The processing unit is further configured to determine a default TCI state of the PDSCH scheduled by the DCI.

[0080] In one embodiment, the default TCI state of the DCI-scheduled PDSCH is determined based on at least one of the TCI state indicated by the MAC CE, the quasi-co-location duration, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0081] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0082] The default TCI state of the DCI-scheduled PDSCH includes:

[0083] The TCI status of the control resource set with the smallest control resource set identifier in the control resource set with the specified control resource set pool index value in the time unit of the search space set that needs to be monitored most recently, and the specified control resource set pool index value is the control resource set pool index value of the control resource set associated with the search space set in the time unit.

[0084] In one embodiment, the specified control resource set pool index value includes at least one of the following:

[0085] A first index value, where the first index value is a control resource set pool index of a control resource set corresponding to a search space set that has no link relationship with any other search space set;

[0086] a second index value, where the second index value is different from the control resource set pool index of the control resource set corresponding to the search space set that has no link relationship with any other search space set, wherein the control resource set pool index values corresponding to at least two search space sets having a link relationship are the second index value, or the control resource set pool index value of the control resource set associated with at least two search space sets having a link relationship is the second index value;

[0087] The designated control resource pool index value is a first control resource pool index value, the first control resource pool index value is a control resource pool index value of a control resource set associated with a search space set corresponding to a first PDCCH candidate resource, the first PDCCH candidate resource is a PDCCH candidate resource whose sending time or end time is a specified time among the at least two PDCCH candidate resources for sending the DCI, and the specified time includes the earliest or latest time;

[0088] The designated control resource set pool index value is a second control resource set pool index value, where the second control resource set pool index value is a control resource set pool index value of a control resource set associated with a search space set having a smallest search space set identifier among the at least two search space sets;

[0089] The designated control resource set pool index value is a third control resource set pool index value, and the third control resource set pool index value is a control resource set pool index value corresponding to a control resource set with a smallest control resource set identifier in control resource sets associated with at least two search space sets.

[0090] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and two default TCI states are not configured to be enabled;

[0091] The default TCI state of the DCI-scheduled PDSCH includes:

[0092] In a time unit in which the search space set needs to be monitored most recently, the TCI state of the control resource set with the smallest control resource set identifier among all the control resource sets associated with the search space set in the time unit.

[0093] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the quasi co-location duration, and the DCI does not include a TCI field;

[0094] The default TCI state of the DCI-scheduled PDSCH includes at least one of the following:

[0095] At least one TCI state among at least two TCI states corresponding to at least two search space sets having a link relationship;

[0096] The TCI state of the first control resource set associated with at least two search space sets having a link relationship, wherein the first control resource set is the control resource set corresponding to the search space set with the smallest search space set identifier among the at least two search space sets, or the control resource set with the smallest control resource set identifier among the control resource sets corresponding to the at least two search space sets.

[0097] In one embodiment, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and the terminal is configured to enable two default TCI states;

[0098] The default TCI state of the PDSCH scheduled by the DCI is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MACCE.

[0099] In one embodiment, the MAC CE is used to indicate at least two TCI states corresponding to each code point in at least one code point; each TCI state in the at least two TCI states is used for uplink transmission and / or downlink transmission.

[0100] According to a fifth aspect of an embodiment of the present disclosure, a TCI status determination device is provided, including:

[0101] a processor; a memory for storing instructions executable by the processor;

[0102] The processor is configured to: execute the TCI status determination method described in the first aspect or any one of the embodiments of the first aspect.

[0103] According to a sixth aspect of an embodiment of the present disclosure, a TCI status determination device is provided, including:

[0104] a processor; a memory for storing instructions executable by the processor;

[0105] The processor is configured to: execute the TCI status determination method described in the second aspect or any one of the embodiments of the second aspect.

[0106] According to the seventh aspect of the embodiments of the present disclosure, a computer storage medium is provided, wherein the storage medium stores instructions, and when the instructions are executed, the TCI status determination method described in the first aspect or any one of the embodiments of the first aspect is implemented.

[0107] According to an eighth aspect of the embodiments of the present disclosure, a computer storage medium is provided, characterized in that instructions are stored in the storage medium, and when the instructions in the storage medium are executed, the TCI status determination method described in the second aspect or any one of the embodiments of the second aspect is implemented.

[0108] The technical solutions provided by embodiments of the present disclosure may provide the following advantageous effects: When the control resource set pool indexes of the control resource sets corresponding to two of at least two search space sets are different, a MAC CE is determined, the MAC CE being used to indicate at least one TCI state corresponding to each of at least one codepoint. Therefore, based on the MAC CE, a default TCI state for a DCI-scheduled physical downlink shared channel can be determined, thereby enabling the determination of the default TCI state when the control resource set pool indexes of the control resource sets corresponding to two of at least two search space sets are different.

[0109] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0111] Figure 1 The figure is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0112] Figure 2 A schematic diagram of the MAC CE format under the S-DCI mechanism is shown.

[0113] Figure 3 A schematic diagram of the MAC CE format under the M-DCI mechanism is shown.

[0114] Figure 4 The figure is a flowchart of a TCI configuration method according to an exemplary embodiment.

[0115] Figure 5 The figure is a flow chart of a TCI configuration method according to an exemplary embodiment.

[0116] Figure 6 The figure is a block diagram of a TCI configuration device according to an exemplary embodiment.

[0117] Figure 7 The figure is a block diagram of a TCI configuration device according to an exemplary embodiment.

[0118] Figure 8 FIG. 4 is a block diagram of a device for TCI configuration according to an exemplary embodiment.

[0119] Figure 9 FIG. 4 is a block diagram of a device for TCI configuration according to an exemplary embodiment. DETAILED DESCRIPTION

[0120] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure.

[0121] The data transmission method provided by the embodiment of the present disclosure can be applied to Figure 1 In the wireless communication system shown in FIG. Figure 1As shown in FIG, the wireless communication system includes a terminal and a network device. The terminal is connected to the network device via wireless resources and performs data transmission and reception.

[0122] It is understandable that Figure 1 The wireless communication system shown is only for schematic illustration. The wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices. Figure 1 The embodiment of the present disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0123] It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), carrier sense multiple access / collision avoidance (Carrier Sense Multiple Access with Collision Avoidance). According to factors such as the capacity, rate, and latency of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, which can also be called New Radio (NR). For the convenience of description, the present disclosure sometimes refers to the wireless communication network as simply a network.

[0124] Furthermore, the network devices involved in the present disclosure may also be referred to as wireless access network devices. The wireless access network devices may be: base stations, evolved node B (eNB), home base stations, access points (APs) in wireless fidelity (WIFI) systems, wireless relay nodes, wireless backhaul nodes, transmission points (TPs) or transmission and reception points (TRPs), etc., and may also be gNBs in NR systems, or may also be components or part of devices constituting base stations. In the case of a vehicle-to-everything (V2X) communication system, the network device may also be an on-board device. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited.

[0125] Furthermore, the terminal involved in the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal can be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: smart phones (Mobile Phones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0126] In the present disclosure, data transmission between a network device and a terminal is based on a beam. During the process of data transmission based on a beam, a network device (such as a base station) can use multiple TRPs (multiple TRPs are also called Multi-TRPs) to send PDCCH to the terminal. In the related art, when a network device (such as a base station) uses one TRP to send PDCCH to a terminal, the terminal is configured with a TCI state for receiving the PDCCH. For example, the configuration method is: configure a CORESET such as CORESET#1 for the terminal, and configure the terminal to use TCI#1 when receiving the PDCCH in the CORESET#1 resource. And configure a search space set (Search Space set, SS set) for the terminal, which is associated with CORESET#1. When the terminal receives the PDCCH on the resource in the SS set, it uses the beam corresponding to TCI#1 to receive it. Currently, each SS set can only be associated with one CORESET, and each CORESET is configured with only one TCI state (TCI state is also called TCI state).

[0127] In the present disclosure, data transmission between a network device and a terminal is performed based on beams. During beam-based data transmission, when a network device (e.g., a base station) uses multiple Transmission Relay Protocols (TRPs) (also referred to as Multi-TRPs) to transmit a PDCCH to a terminal, different TRPs use different beams for transmission. Multiple TRPs can transmit the same PDCCH.

[0128] To enable multiple TRPs to send the same PDCCH, there is currently a method: configure two CORESETs, each corresponding to a TCI state, and configure SS sets to be associated with the two CORESETs respectively. That is, two SS sets are configured, associated with different CORESETs and corresponding to different TCI states. Among them, the PDCCHcandidates of the two associated SS sets are also associated. For example, if SS set #1 and SS set #2 are associated, then PDCCHcandidate #i in SS set #1 is associated with PDCCH candidate #i in SS set #2, that is, two PDCCH candidates with the same index are used to send the same DCI.

[0129] One application scenario in which multiple TRPs send the same PDCCH is Multi-TRP PDCCH repetition. In Multi-TRP PDCCH repetition, two CORESETs are configured, and the corresponding TCI states are configured. Each CORESET is configured with a corresponding TCI state, and two linked SS sets are configured, associating different CORESETs with different corresponding TCI states. The two linked SS sets can be understood as two PDCCH candidates with the same PDCCH candidate index in the two SS sets used to send a DCI.

[0130] In the traditional method, the S-DCI mechanism is supported to indicate the TCI state, that is, the CORESETPoolIndex of all DCI corresponding CORESETs is the same. In related technologies, the multi-DCI (M-DCI) mechanism is also supported to indicate the TCI state, that is, the CORESETPoolIndex of the CORESETs corresponding to different DCIs may be different. In addition, the default TCI state configuration of PDSCH is also performed in the S-DCI mechanism and the M-DCI mechanism.

[0131] The following first describes the S-DCI mechanism and the M-DCI mechanism.

[0132] In the S-DCI mechanism, all CORESETs correspond to a CORESETPoolIndex of 0 or no CORESETPoolIndex value is configured. Each codepoint in the TCI field in DCI signaling can correspond to up to two TCI states. The correspondence is determined by the Medium Access Control (MAC) control element (CE) and does not need to distinguish between different TRPs. Figure 2 Figure 1 shows a schematic diagram of the MAC CE format under the S-DCI mechanism. Figure 2As shown, there are two subscripts i and j under the TCI state ID. i identifies the codepoint of the 3-bit TCIfield in the DCI corresponding to this TCI state ID. For example, i is 0, which corresponds to codepoint 000; i is 1, which corresponds to codepoint 001... etc. The subscript j identifies that this TCI state ID is the jth one among at least one TCI state ID corresponding to the i-th codepoint. For example, j is 1, which identifies the first one; j is 2, which identifies the second one. If the subscript is 0 or 1, it identifies the first TCIstate ID corresponding to codepoint 000. Figure 2 As shown in Figure 1, under the S-DCI mechanism, each codepoint can correspond to at most two TCI states, that is, corresponding to different TRPs.

[0133] In the S-DCI mechanism, the default beam of the PDSCH, or also known as the default TCI state, may include the following:

[0134] A: When the interval between a PDCCH and its scheduled PDSCH is less than the time duration for QCL, in one embodiment, if two default TCI states (enableTwoDefaultTCI-States) are not enabled, the QCL indicated by the default TCI state is the same as the quasi co-location (or Quasi co-located, QCL) of the CORESET with the smallest CORESET ID in the time slot that most recently needs to monitor the PDCCH candidate. In another embodiment, if enableTwoDefaultTCI-States is enabled, the default TCI state is the same as the two TCI states corresponding to the smallest codepoint among all codepoints corresponding to the two TCI states in the TCI domain.

[0135] B: The interval between the PDCCH and the PDSCH it schedules is greater than or equal to the timedurationforQCL, and there is no TCI field in the DCI. The QCL indicated by the default TCI state is the same as the QCL (Quasi colocation) of the CORESET that schedules the PDSCH.

[0136] In the M-DCI mechanism, some CORESETs correspond to CORESETPoolIndex 0, while others correspond to CORESETPoolIndex 1. Each codepoint in the TCI field of DCI signaling can correspond to at most one TCI state. The TCI states corresponding to codepoints in the TCI field of CORESETs with different CORESETPoolIndex are determined by different MAC CEs. In the M-DCI mechanism, the MAC CE contains the CORESETPoolIndex and up to eight TCI states to be activated. Figure 3 Figure 1 shows a schematic diagram of the MAC CE format under the M-DCI mechanism. Figure 3 As shown, the MAC CE includes CORESETPoolIndex. The MAC CE indicates the TCI state corresponding to the codepoint of the TCI field of the DCI of at least one CORESET included in the CORESETPoolIndex. Figure 3 Many Ts are given in i , i identifies the TCI state ID in RRC signaling, if T i If the bit position of is 1, it indicates that the TCI state ID is activated. For example, for CORESETPoolIndex 0, MAC CE activates TCI state#0, TCI state#4, TCI state#5, TCI state#12, TCI state#14, TCI state#26, TCI state#34, and TCI state#40, which correspond to codepoints 000, 001, 010, 011, 100, 101, 110, and 111 of the TCI field of the DCI of CORESET#0 and CORESET#1 (the CORESETPoolIndex of these two CORESETs is 0), respectively. For example, for CORESETPoolIndex1, MAC CE activates TCIstate#70, TCI state#74, TCI state#75, TCI state#82, TCI state#84, TCI state#96, TCIstate#104, and TCI state#108, which correspond to the codepoints of the TCI field of the DCI of CORESET#2 and CORESET#3 (the CORESETPoolIndex of these two CORESETs is 1), respectively.

[0137] In the M-DCI mechanism, the default beam of the PDSCH, or also known as the default TCI state, may include the following:

[0138] A: When the interval between PDCCH and its scheduled PDSCH is less than timedurationforQCL, you need to configure enableDefaultTCI-StatePerCoresetPoolIndex. The QCL indicated by the default TCI state is the same as the QCL of the CORESET with the smallest CORESET ID in the CORESET with the same CORESETPoolIndex as the CORESET corresponding to the CORESET that schedules the PDSCH in the slot that needs to monitor the PDCCH candidate most recently.

[0139] B: When the interval between the PDCCH and the PDSCH it schedules is greater than or equal to the timedurationforQCL, and there is no TCI field in the DCI, the QCL indicated by the default TCI state is the same as the QCL of the CORESET that schedules the PDSCH.

[0140] However, when the CORESETPoolIndex of the CORESETs corresponding to multiple linked SS sets used for PDCCH repetition transmission is different, the TCI state corresponding to the codepoint of the TCI field in the DCI carried by the PDCCHcandidate in the multiple linked SS sets can be configured based on the S-DCI mechanism of the physical downlink shared channel (PDSCH) transmission scheduled by the PDCCH, or can be configured based on the multiple downlink control signaling (Multi-DCI, M-DCI) mechanism of the PDSCH transmission scheduled by the PDCCH. When the TCI state of PDSCH transmission is configured using different mechanisms, how to determine the default TCI state of the PDSCH scheduled by the PDCCH is a problem that needs to be solved.

[0141] The embodiments of the present disclosure provide a TCI state determination method to provide a method for determining a default TCI state of a DCI-scheduled PDSCH when the CORESETPoolIndex of the CORESETs corresponding to two PDCCH candidates used for PDCCH repetition are different.

[0142] In one implementation, in the embodiments of the present disclosure, the default TCI state of the DCI-scheduled PDSCH may be determined based on the MAC CE.

[0143] Figure 4 FIG. 1 is a flow chart showing a method for determining a TCI state according to an exemplary embodiment. Figure 4 As shown, the TCI status determination method is executed by the terminal and includes the following steps.

[0144] In step S11, first configuration information is received, where the first configuration information is used to configure at least two SS sets having a link relationship, wherein the CORESETPoolIndex of the CORESETs corresponding to two of the at least two SS sets are different.

[0145] In step S12, a MAC CE is determined, where the MAC CE is used to indicate at least one TCI state corresponding to each code point in the at least one code point.

[0146] If at least one code point is configured to be present, it is carried in the TCI field of the DCI, and the DCI is transmitted by the PDCCH candidate resources in at least two linked SS sets. It should be noted that at least one code point is configured to be present, which can be understood as the TCI field in the DCI being configured to be present.

[0147] In step S13, a default TCI state of the DCI-scheduled PDSCH is determined.

[0148] In the TCI state determination method provided by the embodiment of the present disclosure, when the CORESETPoolIndex of the CORESETs corresponding to two of the at least two SS sets is different, the TCI state of the DCI-scheduled PDSCH can be determined based on the MAC CE, thereby realizing the determination of the default TCI state when the CORESETPoolIndex of the CORESETs corresponding to two of the at least two SS sets is different.

[0149] In one embodiment, the default TCI state of the DCI-scheduled PDSCH in the embodiment of the present disclosure can be determined based on at least one of the TCI state indicated by the MACCE, the time duration for QCL, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0150] In one embodiment, based on the M-DCI mechanism, the MAC CE indicates at most one TCI state corresponding to each code point in at least one code point. When the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than timedurationforQCL, the default TCI state of the DCI-scheduled PDSCH includes: the TCI state of the CORESET with the smallest CORESET ID among the CORESETs corresponding to the specified CORESETPoolIndex value in the time unit that most recently requires monitoring the SSset.

[0151] The TCI status includes at least QCL Type D, Spatial Rx parameter, etc.

[0152] The time unit that needs to monitor the SS set most recently contains at least one SS set, and the CORESETPoolIndex of the CORESET associated with the SS set is the specified CORESETPoolIndex value.

[0153] It is understood that the time unit involved in the embodiments of the present disclosure may be a slot, a mini-slot, or a span, wherein a span includes multiple consecutive symbols or multiple consecutive slots.

[0154] In one embodiment, specifying a CORESETPoolIndex value includes at least one of the following:

[0155] A: Specify the CORESETPoolIndex value as the first index value, where the first index value is the CORESETPoolIndex of the CORESET corresponding to the SS set that has no link relationship with any other SS set. For example, the first index value can be 0 or 1.

[0156] In one example, the default TCI state of the DCI-scheduled PDSCH may be the default TCI state with CORESETPoolIndex of 0 (wherein, CORESETPoolIndex of 0 may be configured by radio resource control (RRC) signaling or system default), that is, the QCL parameter indicated by the default TCI state is the QCL parameter of the CORESET with the smallest ID among the CORESETs associated with the SS set in the time unit in which the search space needs to be monitored most recently and whose CORESETPoolIndex is 0.

[0157] In another example, the default TCI state of the DCI-scheduled PDSCH can be the default beam with CORESETPoolIndex of 1 (wherein, CORESETPoolIndex of 1 can be an RRC configuration or a system default), that is, the QCL parameter indicated by the default TCI state is the QCL parameter of the CORESET with the smallest ID among the CORESETs associated with the SS set in the time unit in which the search space needs to be monitored most recently and whose CORESETPoolIndex is 1.

[0158] B: Specify the CORESETPoolIndex value as a second index value, which is different from the CORESETPoolIndex of the CORESET corresponding to any SS set that has no link relationship with any other SS set. For example, the second index value can be a newly introduced value different from 0 or 1, such as 2.

[0159] In the embodiment of the present disclosure, the CORESETPoolIndex value corresponding to at least two SS sets having a link relationship is the second index value, or the CORESETPoolIndex value of the CORESET associated with at least two SS sets having a link relationship is the second index value.

[0160] C: Specifies the CORESETPoolIndex value as the first CORESETPoolIndex value.

[0161] The first CORESETPoolIndex is the CORESETPoolIndex of the CORESET associated with the SS set corresponding to the first PDCCH candidate resource. The first PDCCH candidate resource is the PDCCH candidate resource with a sending time or end time of a specified time among at least two PDCCH candidate resources for sending DCI, where the specified time includes the earliest or latest time.

[0162] In one example, the default TCI state of the DCI-scheduled PDSCH may be the default TCI state of the value of the CORESETPoolIndex of the CORESET corresponding to the SS set corresponding to the PDCCHcandidate used to send the DCI, whose sending or ending time is earlier or later (wherein the earlier or later time may be the system default).

[0163] D: Specifies the CORESETPoolIndex value as the second CORESETPoolIndex value.

[0164] The second CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set having the smallest SS set identifier among the at least two SS sets.

[0165] In one example, the specified CORESETPoolIndex value is determined by the SS set ID. For example, the default TCI state of the DCI-scheduled PDSCH can be the default TCI state of the CORESETPoolIndex value of the CORESET corresponding to the SS set with the smaller SS set ID (system default) of the two SS sets.

[0166] E: Specifies the CORESETPoolIndex value to be the third CORESETPoolIndex value.

[0167] The third CORESETPoolIndex value is the CORESETPoolIndex value corresponding to the CORESET with the smallest CORESET identifier among the CORESETs associated with at least two SS sets.

[0168] In one example, the specified CORESETPoolIndex value is determined by the CORESET ID. For example, the default TCI state of the DCI-scheduled PDSCH may be the default TCI state of the CORESETPoolIndex value corresponding to the CORESET with the smaller CORESET ID (system default) among the two CORESETs corresponding to the SS sets.

[0169] Furthermore, in one implementation of the embodiment of the present disclosure, MAC CE indicates at most one TCI state corresponding to each code point in at least one code point. When the time interval between PDCCH and PDSCH scheduled by PDCCH is less than timedurationforQCL, CORESETPoolIndex may be ignored, and the TCI state of the CORESET with the smallest CORESET ID among all CORESETs associated with the SS set in the time unit that most recently needs to monitor the SS set may be used as the default TCI state of the PDSCH scheduled by DCI.

[0170] In one example, the MAC CE indicates that each codepoint corresponds to at most one TCI state. When the interval between PDCCH and PDSCH is less than timedurationforQCL, the CORESETPoolIndex is not distinguished. That is, the QCL parameter of the default TCI state indication of the DCI-scheduled PDSCH is the QCL parameter of the CORESET with the smallest ID among the CORESETs associated with the SSset in the time unit in which the search space needs to be monitored most recently, and whose CORESETPoolIndex is 0 or 1.

[0171] In another embodiment of the present disclosure, based on the M-DCI mechanism, the MAC CE indicates at most one TCI state corresponding to each code point in at least one code point. When the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the timedurationforQCL, but the TCI field does not exist in the DCI, the default TCI state of the PDSCH scheduled by the DCI may include at least one of the following:

[0172] A: at least one TCI state among at least two TCI states corresponding to at least two SS sets having a linked relationship.

[0173] B: TCI status of the first CORESET associated with at least two linked SS sets, where the first CORESET is the CORESET corresponding to the SS set with the smallest SS set identifier among the at least two SS sets, or the CORESET with the smallest CORESET identifier among the corresponding CORESETs in at least two SS sets.

[0174] It is understood that the TCI state corresponding to each of the at least two linked SS sets in each embodiment of the present disclosure may be, on the one hand, the TCI state of the CORESET corresponding to the SS set. On the other hand, it may also be the TCI state configured for the SS set: for example, if a CORESET is configured with multiple TCI states, the TCI state of each SSset associated with it is one of the multiple TCI states.

[0175] In another implementation of the disclosed embodiment, based on the S-DCI mechanism, a MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the time duration for QCL, and the terminal is configured with enableTwoDefaultTCI-States, then the default TCI state of the DCI-scheduled PDSCH may be a first TCI state. The first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MAC CE.

[0176] In another implementation of the embodiment of the present disclosure, based on the S-DCI mechanism, MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, but enableTwoDefaultTCI-States is not configured in the terminal. Then, the default TCI state of the PDSCH scheduled by the DCI may be similar to the case in which MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point involved in the above-mentioned embodiment, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than timedurationforQCL, which will not be described in detail here.

[0177] In another implementation of the embodiments of the present disclosure, based on the S-DCI mechanism, the MAC CE indicates a maximum of two TCI states corresponding to each of at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to timedurationforQCL. The default TCI state of the DCI-scheduled PDSCH may be similar to the situation involved in the above-mentioned embodiments in which the MAC CE indicates a maximum of one TCI state corresponding to each of at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to timedurationforQCL, which will not be described in detail here.

[0178] Furthermore, in one embodiment of the present disclosure, a MAC CE is used to indicate at least two TCI states corresponding to at least one codepoint among at least one codepoint, where each of the at least two TCI states is used for uplink transmission and / or downlink transmission. That is, the at least two TCI states are both used for downlink, or both of the at least two TCI states are used for uplink, or one of the at least two TCI states is used for uplink and the other for downlink, or the at least two TCI states are used for both uplink and downlink.

[0179] It can be understood that in the embodiment of the present disclosure, the downlink includes a downlink channel and / or a downlink signal. The downlink channel includes at least one of the following: a terminal-dedicated PDCCH (UE dedicated PDCCH), a non-UEdedicated PDCCH (non-UEdedicated PDCCH), a terminal-dedicated PDSCH (UE dedicated PDSCH), a non-UEdedicated PDSCH (non-UEdedicated PDSCH), and a physical broadcast channel (PBCH). The downlink signal includes at least one of the following: SSB, a channel state information reference signal (CSI reference signal, CSI-RS) (used for channel state information (CSI) measurement, and / or, for beam management), a tracking reference signal (TRS), a phase reference signal (PRS), and a demodulation reference signal (DMRS). The downlink signal can be periodic, semi-persistent, or non-periodic.

[0180] The uplink includes downlink channels and / or uplink signals. The uplink channel includes at least one of the following: physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH), physical random access channel (PRACH). The uplink signal includes at least one of the following: sounding reference signal (SRS), DMRS. SRS is used for positioning, and / or for beam management, and / or for codebook / non-codebook based channel measurement or antenna switching. The uplink signal can be periodic, semi-persistent or non-periodic.

[0181] Based on the same concept, an embodiment of the present disclosure further provides a TCI status determination method, which is executed by a network device.

[0182] Figure 5 FIG. 1 is a flow chart of a method for determining a TCI state according to an exemplary embodiment. Figure 5 As shown, the TCI configuration method is executed by the network device and includes the following steps.

[0183] In step S21, first configuration information is sent, where the first configuration information is used to configure at least two SS sets having a link relationship, wherein the CORESETPoolIndex of the CORESETs corresponding to two of the at least two SS sets are different.

[0184] In step S22, a MAC CE is determined, where the MAC CE is used to indicate at least one TCI state corresponding to each code point in the at least one code point.

[0185] If at least one code point is configured to appear, it is carried in the TCI field of the DCI, and the DCI is transmitted by PDCCH candidate resources in at least two SS sets having a linked relationship.

[0186] It should be noted that at least one code point is configured to appear, which can be understood as the TCI field in the DCI being configured to appear.

[0187] In step S23, the default TCI state of the DCI-scheduled PDSCH is determined.

[0188] In the TCI state determination method provided by the embodiment of the present disclosure, when the CORESETPoolIndex of the CORESETs corresponding to two of the at least two SS sets is different, the TCI state of the DCI-scheduled PDSCH can be determined based on the MAC CE, thereby realizing the determination of the default TCI state when the CORESETPoolIndex of the CORESETs corresponding to two of the at least two SS sets is different.

[0189] In one embodiment, the default TCI state of the DCI-scheduled PDSCH in the embodiment of the present disclosure can be determined based on at least one of the TCI state indicated by the MACCE, the time duration for QCL, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0190] In one embodiment, based on the M-DCI mechanism, the MAC CE indicates at most one TCI state corresponding to each code point in at least one code point. When the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than timedurationforQCL, the default TCI state of the DCI-scheduled PDSCH includes: the TCI state of the CORESET with the smallest CORESET ID among the CORESETs corresponding to the specified CORESETPoolIndex value in the time unit that most recently needs to monitor the SS set.

[0191] The TCI status includes at least QCL Type D, Spatial Rx parameter, etc.

[0192] The time unit that needs to monitor the SS set most recently contains at least one SS set, and the CORESETPoolIndex of the CORESET associated with the SS set is the specified CORESETPoolIndex value.

[0193] In one embodiment, specifying a CORESETPoolIndex value includes at least one of the following:

[0194] A: Specify the CORESETPoolIndex value as the first index value, where the first index value is the CORESETPoolIndex of the CORESET corresponding to the SS set that has no link relationship with any other SS set;

[0195] B: Specify the CORESETPoolIndex value as a second index value, where the second index value is different from the CORESETPoolIndex of the CORESET corresponding to the SS set that has no link relationship with any other SS set, wherein the CORESETPoolIndex values corresponding to at least two SS sets with a link relationship are the second index value, or the CORESETPoolIndex value of the CORESET associated with at least two SS sets with a link relationship is the second index value;

[0196] C: Specify the CORESETPoolIndex value as the first CORESETPoolIndex value, where the first CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set corresponding to the first PDCCH candidate resource, and the first PDCCH candidate resource is the PDCCH candidate resource whose sending time or end time is the specified time among the at least two PDCCH candidate resources for sending DCI, where the specified time includes the earliest or latest time;

[0197] D: Specify the CORESETPoolIndex value as the second CORESETPoolIndex value, where the second CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set with the smallest SS set identifier among at least two SS sets;

[0198] E: Specify the CORESETPoolIndex value as the third CORESETPoolIndex value. The third CORESETPoolIndex value is the CORESETPoolIndex value corresponding to the CORESET with the smallest CORESET identifier among the CORESETs associated with at least two SS sets.

[0199] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than timedurationforQCL. Alternatively, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than timedurationforQCL, and two default TCI states are not configured to be enabled. The default TCI state of the DCI-scheduled PDSCH includes: in the time unit in which the SS set needs to be monitored most recently, the TCI state of the CORESET with the smallest CORESET identifier among all CORESETs associated with the SS set in the time unit.

[0200] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the timedurationforQCL, and the DCI does not include a TCI field. The default TCI state of the PDSCH scheduled by the DCI includes at least one of the following:

[0201] A: at least one TCI state among at least two TCI states corresponding to at least two SS sets having a link relationship;

[0202] B: TCI status of the first CORESET associated with at least two SS sets having a link relationship. The first CORESET is the CORESET corresponding to the SS set with the smallest SS set identifier among the at least two SS sets, or the CORESET with the smallest CORESET identifier among the corresponding CORESETs in at least two SS sets.

[0203] In one embodiment, a MAC CE indicates a maximum of two TCI states corresponding to each code point of at least one code point, the time interval between a PDCCH and a PDSCH scheduled by the PDCCH is less than a timedurationforQCL, and the terminal is configured to enable two default TCI states. The default TCI state for a DCI-scheduled PDSCH is a first TCI state, where the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MAC CE.

[0204] In one embodiment, the first MAC CE is used to indicate at least two TCI states corresponding to at least one codepoint among the at least one codepoint; each TCI state in the at least two TCI states is used for uplink transmission and / or downlink transmission. That is, the at least two TCI states are both used for downlink, or the at least two TCI states are both used for uplink, or one of the at least two TCI states is used for uplink and the other is used for downlink, or the at least two TCI states are used for both uplink and downlink.

[0205] It is understood that in the embodiments of the present disclosure, downlink includes downlink channels and / or downlink signals, and uplink includes downlink channels and / or uplink signals.

[0206] It can be understood that the TCI status determination method executed by the network device in the embodiment of the present disclosure corresponds to the TCI configuration method executed by the terminal. For some places where the description is not detailed enough, you can refer to some implementation plans involved on the terminal side, which will not be repeated here.

[0207] It can be further understood that the TCI status determination method provided in the embodiment of the present disclosure is applicable to the process of implementing TCI configuration by interaction between the terminal and the network device.

[0208] It should be noted that those skilled in the art will appreciate that the various implementation methods / embodiments involved in the embodiments of the present disclosure can be used in conjunction with the aforementioned embodiments or can be used independently. Whether used alone or in conjunction with the aforementioned embodiments, the implementation principles are similar. In the implementation of the present disclosure, some embodiments are described in terms of implementation methods used together. Of course, those skilled in the art will appreciate that such examples are not limitations on the embodiments of the present disclosure.

[0209] Based on the same concept, the embodiment of the present disclosure also provides a TCI status device.

[0210] It is understandable that the TCI state device provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0211] Figure 6 FIG. 1 is a block diagram of a TCI status determination device according to an exemplary embodiment. Figure 6 The TCI status determining apparatus 100 may be provided as a terminal, and the TCI status determining apparatus 100 includes a receiving unit 101 and a processing unit 102.

[0212] The receiving unit 101 is configured to receive first configuration information, where the first configuration information is used to configure at least two SS sets having a link relationship, wherein CORESETPoolIndex of CORESETs corresponding to two of the at least two SS sets are different.

[0213] Processing unit 102 is configured to determine a MAC CE, where the MAC CE is used to indicate at least one TCI state corresponding to each of at least one codepoint. If the at least one codepoint is configured to be present, the MAC CE is carried in a TCI field of a DCI, where the DCI is transmitted by PDCCH candidate resources in at least two linked SS sets. Processing unit 102 is further configured to determine a default TCI state for a PDSCH scheduled by the DCI.

[0214] In one implementation, the default TCI state of the DCI-scheduled PDSCH is determined based on at least one of the TCI state indicated by the MAC CE, the time duration for QCL, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0215] In one embodiment, the MAC CE indicates at most one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL; or, the MAC CE indicates at most two TCI states corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL, and the two default TCI states are not configured to be enabled;

[0216] The default TCI states for DCI-scheduled PDSCH include:

[0217] The TCI state of the CORESET with the smallest CORESET identifier in the CORESET with the specified CORESETPoolIndex value in the time unit of the SS set that needs to be monitored recently is specified, and the specified CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set in the time unit.

[0218] In one embodiment, specifying a CORESETPoolIndex value includes at least one of the following:

[0219] Specify the CORESETPoolIndex value as the first index value, where the first index value is the CORESETPoolIndex of the CORESET corresponding to the SS set that has no link relationship with any other SS set;

[0220] Specifying a CORESETPoolIndex value as a second index value, where the second index value is different from the CORESETPoolIndex of the CORESET corresponding to the SS set that has no link relationship with any other SS set, wherein the CORESETPoolIndex values corresponding to at least two SS sets having a link relationship are the second index value, or the CORESETPoolIndex value of the CORESET associated with at least two SS sets having a link relationship is the second index value;

[0221] Specifying a CORESETPoolIndex value as a first CORESETPoolIndex value, the first CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set corresponding to the first PDCCH candidate resource, the first PDCCH candidate resource being a PDCCH candidate resource having a sending time or an end time of a specified time among at least two PDCCH candidate resources for sending DCI, where the specified time includes the earliest or latest time;

[0222] Specify a second CORESETPoolIndex value, where the second CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set having the smallest SS set identifier among at least two SS sets.

[0223] The CORESETPoolIndex value is specified as the third CORESETPoolIndex value. The third CORESETPoolIndex value is the CORESETPoolIndex value corresponding to the CORESET with the smallest CORESET identifier among the CORESETs associated with at least two SS sets.

[0224] In one embodiment, the MAC CE indicates at most one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL; or, the MAC CE indicates at most two TCI states corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL, and the two default TCI states are not configured to be enabled;

[0225] The default TCI states for DCI-scheduled PDSCH include:

[0226] In the time unit in which the SS set needs to be monitored most recently, the TCI status of the CORESET with the smallest CORESET identifier among all the CORESETs associated with the SS set in the time unit.

[0227] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the timedurationforQCL, and the TCI field is not included in the DCI;

[0228] The default TCI state of a DCI-scheduled PDSCH includes at least one of the following:

[0229] At least one TCI state among at least two TCI states corresponding to at least two SS sets having a link relationship;

[0230] The TCI state of the first CORESET associated with at least two SS sets having a link relationship, where the first CORESET is the CORESET corresponding to the SS set with the smallest SS set identifier in the at least two SS sets, or the CORESET with the smallest CORESET identifier in the corresponding CORESETs in the at least two SS sets.

[0231] In one embodiment, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL, and the terminal is configured to enable two default TCI states;

[0232] The default TCI state of the DCI-scheduled PDSCH is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MAC CE.

[0233] In one embodiment, the MAC CE is used to indicate at least two TCI states corresponding to each code point in at least one code point;

[0234] Each TCI state of the at least two TCI states is used for uplink transmission and / or downlink transmission.

[0235] Figure 7 FIG. 1 is a block diagram of a TCI status determination device according to an exemplary embodiment. Figure 7 The TCI status determining apparatus 200 may be provided as a network device, and the TCI status determining apparatus 200 includes a sending unit 201 and a processing unit 202.

[0236] The sending unit 201 is configured to send first configuration information, where the first configuration information is used to configure at least two SS sets having a link relationship, wherein CORESETPoolIndex of CORESETs corresponding to two of the at least two SS sets are different;

[0237] Processing unit 202 is configured to determine a MAC CE, where the MAC CE is used to indicate at least one TCI state corresponding to each of at least one codepoint. If the at least one codepoint is configured to be present, the MAC CE is carried in the TCI field of a DCI, where the DCI is transmitted by PDCCH candidate resources in at least two linked SS sets. Processing unit 202 is further configured to determine a default TCI state for a PDSCH scheduled by the DCI.

[0238] In one implementation, the default TCI state of the DCI-scheduled PDSCH is determined based on at least one of the TCI state indicated by the MAC CE, the time duration for QCL, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH.

[0239] In one embodiment, the MAC CE indicates at most one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL; or, the MAC CE indicates at most two TCI states corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL, and the two default TCI states are not configured to be enabled;

[0240] The default TCI states for DCI-scheduled PDSCH include:

[0241] The TCI state of the CORESET with the smallest CORESET identifier in the CORESET with the specified CORESETPoolIndex value in the time unit of the SS set that needs to be monitored recently is specified, and the specified CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set in the time unit.

[0242] In one embodiment, specifying a CORESETPoolIndex value includes at least one of the following:

[0243] Specify the CORESETPoolIndex value as the first index value, where the first index value is the CORESETPoolIndex of the CORESET corresponding to the SS set that has no link relationship with any other SS set;

[0244] Specifying a CORESETPoolIndex value as a second index value, where the second index value is different from the CORESETPoolIndex of a CORESET corresponding to an SS set that has no link relationship with any other SS set, wherein the CORESETPoolIndex values corresponding to at least two SS sets having a link relationship are the second index value, or the CORESETPoolIndex value of a CORESET associated with at least two SS sets having a link relationship is the second index value;

[0245] Specifying a CORESETPoolIndex value as a first CORESETPoolIndex value, the first CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set corresponding to the first PDCCH candidate resource, the first PDCCH candidate resource being a PDCCH candidate resource having a sending time or an end time of a specified time among at least two PDCCH candidate resources for sending DCI, where the specified time includes the earliest or latest time;

[0246] Specify a second CORESETPoolIndex value, where the second CORESETPoolIndex value is the CORESETPoolIndex value of the CORESET associated with the SS set having the smallest SS set identifier among at least two SS sets.

[0247] The CORESETPoolIndex value is specified as the third CORESETPoolIndex value. The third CORESETPoolIndex value is the CORESETPoolIndex value corresponding to the CORESET with the smallest CORESET identifier among the CORESETs associated with at least two SS sets.

[0248] In one embodiment, the MAC CE indicates at most one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL; or, the MAC CE indicates at most two TCI states corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL, and the two default TCI states are not configured to be enabled;

[0249] The default TCI states for DCI-scheduled PDSCH include:

[0250] In the time unit in which the SS set needs to be monitored most recently, the TCI status of the CORESET with the smallest CORESET identifier among all the CORESETs associated with the SS set in the time unit.

[0251] In one embodiment, the MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the timedurationforQCL, and the TCI field is not included in the DCI;

[0252] The default TCI state of a DCI-scheduled PDSCH includes at least one of the following:

[0253] At least one TCI state among at least two TCI states corresponding to at least two SS sets having a link relationship;

[0254] The TCI state of the first CORESET associated with at least two SS sets having a link relationship, where the first CORESET is the CORESET corresponding to the SS set with the smallest SS set identifier in the at least two SS sets, or the CORESET with the smallest CORESET identifier in the corresponding CORESETs in the at least two SS sets.

[0255] In one embodiment, the MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the timedurationforQCL, and the terminal is configured to enable two default TCI states;

[0256] The default TCI state of the DCI-scheduled PDSCH is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MAC CE.

[0257] In one implementation, the MAC CE is used to indicate at least two TCI states corresponding to each code point in at least one code point; each TCI state in the at least two TCI states is used for uplink transmission and / or downlink transmission.

[0258] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0259] Figure 8 FIG3 is a block diagram illustrating an apparatus 300 for determining TCI status according to an exemplary embodiment. Apparatus 300 may be provided as a terminal. For example, apparatus 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0260] Reference Figure 8 , apparatus 300 may include one or more of the following components: a processing component 302 , a memory 304 , a power component 306 , a multimedia component 308 , an audio component 310 , an input / output (I / O) interface 312 , a sensor component 314 , and a communication component 316 .

[0261] The processing component 302 generally controls the overall operation of the device 300, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 302 may include one or more modules to facilitate interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.

[0262] The memory 304 is configured to store various types of data to support operations on the device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phone book data, messages, pictures, videos, etc. The memory 304 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0263] The power component 306 provides power to the various components of the device 300. The power component 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 300.

[0264] The multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0265] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive external audio signals when the device 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

[0266] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0267] The sensor assembly 314 includes one or more sensors for providing various aspects of the status assessment of the device 300. For example, the sensor assembly 314 can detect the open / closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300. The sensor assembly 314 can also detect changes in the position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration / deceleration of the device 300, and temperature changes of the device 300. The sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0268] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0269] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0270] In an exemplary embodiment, a computer storage medium is also provided, such as a memory 304 including instructions, which can be executed by the processor 320 of the apparatus 300 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0271] Figure 9 FIG. 4 is a block diagram of an apparatus 400 for determining a TCI state according to an exemplary embodiment. For example, the apparatus 400 may be provided as a network device. Figure 9 Apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by memory 432 for storing instructions, such as applications, that are executable by processing component 422. The applications stored in memory 432 may include one or more modules, each corresponding to a set of instructions. Furthermore, processing component 422 is configured to execute the instructions to perform the aforementioned method.

[0272] The device 400 may also include a power supply component 426 configured to perform power management of the device 400, a wired or wireless network interface 450 configured to connect the device 400 to a network, and an input / output (I / O) interface 458. The device 400 may operate based on an operating system stored in the memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0273] In an exemplary embodiment, the apparatus 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0274] In an exemplary embodiment, a computer storage medium is also provided, such as a memory 432 including instructions, which can be executed by the processing component 422 of the apparatus 400 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0275] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0276] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0277] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0278] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0279] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A method for determining a transmission configuration indication (TCI) state, characterized in that: The method is executed by a terminal and includes: receiving first configuration information, where the first configuration information is used to configure at least two search space sets having a linked relationship, wherein control resource set pool indexes of control resource sets corresponding to two of the at least two search space sets are different; Determine a media access control control element MAC CE, where the MAC CE is used to indicate at least one TCI state corresponding to each code point in the at least one code point, and if the at least one code point is configured to be present, the TCI state is carried in a transmission configuration indication field of downlink control information DCI, where the DCI is transmitted by PDCCH candidate resources in the at least two search space sets having a linked relationship; Determine a default TCI state of the physical downlink shared channel PDSCH scheduled by the DCI; The default TCI state of the DCI-scheduled PDSCH is determined based on the TCI state indicated by the MAC CE and at least one of the following: a quasi-co-location duration, and a time interval between a PDCCH and the PDSCH scheduled by the PDCCH.

2. The method according to claim 1, characterized in that The MAC CE indicates at most one TCI state corresponding to each code point in at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates at most two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and the terminal is not configured to enable two default TCI states; The default TCI state of the DCI-scheduled PDSCH includes: The TCI status of the control resource set with the smallest control resource set identifier in the control resource set with a specified control resource set pool index value in the time unit of the search space set that needs to be monitored most recently, wherein the control resource set pool index value of the control resource set associated with at least one search space set in the time unit is the specified control resource set pool index value.

3. The method according to claim 2, wherein the specified control resource set pool index value comprises at least one of the following: The designated control resource set pool index value is a first index value, where the first index value is a control resource set pool index of a control resource set corresponding to a search space set that has no link relationship with any other search space set; The designated control resource set pool index value is a second index value, where the second index value is different from the control resource set pool index of the control resource set corresponding to the search space set that has no link relationship with any other search space set, wherein the control resource set pool index value corresponding to at least two search space sets having a link relationship is the second index value, or the control resource set pool index value of the control resource set associated with at least two search space sets having a link relationship is the second index value; The designated control resource pool index value is a first control resource pool index value, the first control resource pool index value is a control resource pool index value of a control resource set associated with a search space set corresponding to a first PDCCH candidate resource, the first PDCCH candidate resource is a PDCCH candidate resource whose sending time or end time is a specified time among the at least two PDCCH candidate resources for sending the DCI, and the specified time includes the earliest or latest time; The designated control resource set pool index value is a second control resource set pool index value, where the second control resource set pool index value is a control resource set pool index value of a control resource set associated with a search space set having a smallest search space set identifier among the at least two search space sets; The designated control resource set pool index value is a third control resource set pool index value, and the third control resource set pool index value is a control resource set pool index value corresponding to a control resource set with a smallest control resource set identifier in control resource sets associated with at least two search space sets.

4. The method according to claim 1, wherein The MAC CE indicates a maximum of one TCI state corresponding to each of at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each of at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and enabling of two default TCI states is not configured; The default TCI state of the DCI-scheduled PDSCH includes: In a time unit in which the search space set needs to be monitored most recently, the TCI state of the control resource set with the smallest control resource set identifier among all the control resource sets associated with the search space set in the time unit.

5. The method according to claim 1, wherein The MAC CE is used to indicate a maximum of one TCI state corresponding to each code point in at least one code point, or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the quasi co-location duration, and the DCI does not include a transmission configuration indication field; The default TCI state of the DCI-scheduled PDSCH includes at least one of the following: At least one TCI state among at least two TCI states corresponding to at least two search space sets having a link relationship; The TCI state of the first control resource set associated with at least two search space sets having a link relationship, wherein the first control resource set is the control resource set corresponding to the search space set with the smallest search space set identifier among the at least two search space sets, or the control resource set with the smallest control resource set identifier among the control resource sets corresponding to the at least two search space sets.

6. The method according to claim 1, characterized in that The MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, a time interval between a PDCCH and a PDSCH scheduled by the PDCCH is less than a quasi co-location duration, and the terminal is configured with two default TCI states enabled; The default TCI state of the DCI-scheduled PDSCH is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MAC CE.

7. The method according to any one of claims 1 to 6, characterized in that The MAC CE is used to indicate at least two TCI states corresponding to at least one code point of the at least one code point; Each TCI state of the at least two TCI states is used for uplink transmission and / or downlink transmission.

8. A method for determining a transmission configuration indication (TCI) state, characterized in that: The method is performed by a network device and includes: Sending first configuration information, where the first configuration information is used to configure at least two search space sets having a linked relationship, where control resource sets corresponding to two of the at least two search space sets have different control resource set pool indexes; Determine a media access control control element MAC CE, where the MAC CE is used to indicate at least one TCI state corresponding to each code point in the at least one code point. If the at least one code point is configured to be present, the TCI state is carried in a transmission configuration indication field of downlink control information DCI, where the DCI is transmitted by physical downlink control channel PDCCH candidate resources in the at least two search space sets having a linked relationship. Determine a default TCI state of the physical downlink shared channel PDSCH scheduled by the DCI; The default TCI state of the DCI-scheduled PDSCH is determined based on the TCI state indicated by the MAC CE and at least one of the following: a quasi-co-location duration, and a time interval between a PDCCH and the PDSCH scheduled by the PDCCH.

9. The method according to claim 8, characterized in that The MAC CE indicates a maximum of one TCI state corresponding to each of at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each of at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and enabling of two default TCI states is not configured; The default TCI state of the DCI-scheduled PDSCH includes: The TCI status of the control resource set with the smallest control resource set identifier in the control resource set with the specified control resource set pool index value in the time unit of the search space set that needs to be monitored most recently, and the specified control resource set pool index value is the control resource set pool index value of the control resource set associated with the search space set in the time unit.

10. The method according to claim 9, wherein the designated control resource set pool index value comprises at least one of the following: A first index value, where the first index value is a control resource set pool index of a control resource set corresponding to a search space set that has no link relationship with any other search space set; a second index value, where the second index value is different from the control resource set pool index of the control resource set corresponding to the search space set that has no link relationship with any other search space set, wherein the control resource set pool index values corresponding to at least two search space sets having a link relationship are the second index value, or the control resource set pool index value of the control resource set associated with at least two search space sets having a link relationship is the second index value; The designated control resource pool index value is a first control resource pool index value, the first control resource pool index value is a control resource pool index value of a control resource set associated with a search space set corresponding to a first PDCCH candidate resource, the first PDCCH candidate resource is a PDCCH candidate resource whose sending time or end time is a specified time among the at least two PDCCH candidate resources for sending the DCI, and the specified time includes the earliest or latest time; The designated control resource set pool index value is a second control resource set pool index value, where the second control resource set pool index value is a control resource set pool index value of a control resource set associated with a search space set having a smallest search space set identifier among the at least two search space sets; The designated control resource set pool index value is a third control resource set pool index value, and the third control resource set pool index value is a control resource set pool index value corresponding to a control resource set with a smallest control resource set identifier in control resource sets associated with at least two search space sets.

11. The method according to claim 8, characterized in that The MAC CE indicates a maximum of one TCI state corresponding to each of at least one code point, and the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration; or, the MAC CE indicates a maximum of two TCI states corresponding to each of at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is less than the quasi co-location duration, and enabling of two default TCI states is not configured; The default TCI state of the DCI-scheduled PDSCH includes: In a time unit in which the search space set needs to be monitored most recently, the TCI state of the control resource set with the smallest control resource set identifier among all the control resource sets associated with the search space set in the time unit.

12. The method according to claim 8, characterized in that The MAC CE indicates a maximum of one TCI state corresponding to each code point in at least one code point or is used to indicate a maximum of two TCI states corresponding to each code point in at least one code point, the time interval between the PDCCH and the PDSCH scheduled by the PDCCH is greater than or equal to the quasi co-location duration, and the DCI does not include a transmission configuration indication field; The default TCI state of the DCI-scheduled PDSCH includes at least one of the following: At least one TCI state among at least two TCI states corresponding to at least two search space sets having a link relationship; The TCI state of the first control resource set associated with at least two search space sets having a link relationship, wherein the first control resource set is the control resource set corresponding to the search space set with the smallest search space set identifier among the at least two search space sets, or the control resource set with the smallest control resource set identifier among the control resource sets corresponding to the at least two search space sets.

13. The method according to claim 8, characterized in that The MAC CE indicates a maximum of two TCI states corresponding to each code point in at least one code point, a time interval between a PDCCH and a PDSCH scheduled by the PDCCH is less than a quasi co-location duration, and is configured to enable two default TCI states; The default TCI state of the DCI-scheduled PDSCH is the first TCI state, and the first TCI state is the two TCI states corresponding to the minimum code point among all code points corresponding to the two TCI states indicated by the MAC CE.

14. The method according to any one of claims 8 to 13, characterized in that The MAC CE is used to indicate at least two TCI states corresponding to each code point in at least one code point; Each TCI state of the at least two TCI states is used for uplink transmission and / or downlink transmission.

15. A transmission configuration indication (TCI) status determination device, characterized in that: include: A receiving unit is configured to receive first configuration information, where the first configuration information is used to configure at least two search space sets having a linked relationship, wherein control resource set pool indexes of control resource sets corresponding to two of the at least two search space sets are different; a processing unit configured to determine a media access control element (MAC CE), where the MAC CE is used to indicate at least one TCI state corresponding to each code point in at least one code point, and if the at least one code point is configured to be present, the MAC CE is carried in a transmission configuration indication field of downlink control information (DCI), where the DCI is transmitted by physical downlink control channel (PDCCH) candidate resources in the at least two search space sets having a linked relationship; The processing unit is further configured to determine a default TCI state of the physical downlink shared channel PDSCH scheduled by the DCI; The default TCI state of the DCI-scheduled PDSCH is determined based on the TCI state indicated by the MAC CE and at least one of the following: a quasi-co-location duration, and a time interval between a PDCCH and the PDSCH scheduled by the PDCCH.

16. A transmission configuration indication (TCI) status determination device, characterized in that: include: a sending unit configured to send first configuration information, where the first configuration information is used to configure at least two search space sets having a linked relationship, wherein control resource set pool indexes of control resource sets corresponding to two of the at least two search space sets are different; a processing unit configured to determine a MAC CE, the MAC CE being used to indicate at least one TCI state corresponding to each code point in the at least one code point, and if the at least one code point is configured to be present, the MAC CE is carried in a transmission configuration indication field of a DCI, the DCI being transmitted by PDCCH candidate resources in the at least two search space sets having a linked relationship; The processing unit is further configured to determine a default TCI state of the PDSCH scheduled by the DCI; The default TCI state of the DCI-scheduled PDSCH is determined based on the TCI state indicated by the MAC CE and at least one of the following: a quasi-co-location duration, and a time interval between a PDCCH and the PDSCH scheduled by the PDCCH.

17. A transmission configuration indication (TCI) status determination device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method according to any one of claims 1 to 7.

18. A transmission configuration indication (TCI) status determination device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method according to any one of claims 8 to 14.

19. A computer storage medium, characterized in that The storage medium stores instructions, and when the instructions are executed, the method according to any one of claims 1 to 7 is implemented.

20. A computer storage medium, characterized in that The storage medium stores instructions, and when the instructions are executed, the method according to any one of claims 8 to 14 is implemented.

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