Communication method, terminal, network device, storage medium and program product

Abstract

The present disclosure relates to a communication method, a terminal, a network device, a storage medium, and a program product. The communication method comprises: a terminal determining a first reference signal resource set, wherein the first reference signal resource set is used for failure detection of first bandwidth units, and one bandwidth part (BWP) of the terminal comprises at least one of the first bandwidth units. The present disclosure can improve the communication efficiency.

Description

Communication methods, terminals, network devices, storage media and software products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to communication methods, terminals, network devices, storage media, and program products. Background Technology

[0002] In communication scenarios, high-frequency bands and massive MIMO (Massively Multi-Sized Antenna Arrays) are introduced to improve spectral efficiency. Massive MIMO can provide greater beamforming gain, effectively compensating for the transmission losses caused by high-frequency bands.

[0003] Summary of the Invention

[0004] In high-frequency large-scale antenna scenarios, communication efficiency needs to be improved.

[0005] This disclosure provides communication methods, terminals, network devices, storage media, and program products.

[0006] According to a first aspect of the present disclosure, a communication method is proposed, the method comprising: a terminal determining a first reference signal resource set, the first reference signal resource set being used for failure detection of a first bandwidth unit; wherein a bandwidth portion (BWP) of the terminal includes at least one of the first bandwidth units.

[0007] According to a second aspect of the present disclosure, a communication method is proposed, the method comprising a network device sending first information and / or second information to a terminal; the first information is used to indicate a first TCI state corresponding to a control resource set, the first TCI state being used to determine at least one reference signal resource in a first reference signal resource set; the second information is used to indicate an indicated TCI state, the indicated TCI state being used to determine at least one reference signal resource in the first reference signal resource set; the first reference signal resource set is used for failure detection of a first bandwidth unit, and a bandwidth portion (BWP) of the terminal includes at least one of the first bandwidth units.

[0008] According to a third aspect of the present disclosure, a communication method is proposed, the method comprising: a network device sending first information and / or second information to a terminal; the first information being used to indicate a first TCI state corresponding to a control resource set, the first TCI state being used to determine at least one reference signal resource in a first reference signal resource set; the second information being used to indicate an indicated TCI state, the indicated TCI state being used to determine at least one reference signal resource in the first reference signal resource set; the terminal determining the first reference signal resource set based on the first information and / or the second information; the first reference signal resource set being used for failure detection of a first bandwidth unit, and a bandwidth portion (BWP) of the terminal including at least one of the first bandwidth units.

[0009] According to a fourth aspect of the present disclosure, a terminal is provided, comprising: a transceiver module configured to determine a first reference signal resource set, the first reference signal resource set being used for failure detection of a first bandwidth unit; wherein a bandwidth portion (BWP) of the terminal includes at least one of the first bandwidth units.

[0010] According to a fifth aspect of the present disclosure, a network device is provided, comprising: a transceiver module configured to send first information and / or second information to a terminal; the first information being configured to indicate a first TCI state corresponding to a control resource set, the first TCI state being configured to determine at least one reference signal resource in a first reference signal resource set; the second information being configured to indicate an indicated TCI state, the indicated TCI state being configured to determine at least one reference signal resource in the first reference signal resource set; the first reference signal resource set being used for failure detection of a first bandwidth unit, wherein a bandwidth portion (BWP) of the terminal includes at least one of the first bandwidth units.

[0011] According to a sixth aspect of the present disclosure, a terminal is provided, comprising: one or more processors; wherein the terminal is configured to execute the first aspect and any one of the communication methods in the first aspect.

[0012] According to a seventh aspect of the present disclosure, a network device is provided, comprising: one or more processors; wherein the network device is configured to perform the second aspect and any one of the communication methods in the second aspect.

[0013] According to an eighth aspect of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the first aspect and any one of the communication methods in the first aspect, and the network device is configured to implement the second aspect and any one of the communication methods in the second aspect.

[0014] According to a ninth aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform a communication method as described in the first aspect and any one of the first aspects or the second aspect and any one of the second aspects.

[0015] According to a tenth aspect of the present disclosure, a program product is provided, comprising: a computer program, which, when executed by a communication device, causes the communication device to perform a communication method as described in the first aspect and any one of the first aspects or the second aspect and the second aspect.

[0016] This disclosure improves communication efficiency by determining a first set of reference signal resources, thereby enabling failure detection for a first bandwidth unit and facilitating link failure recovery based on the first bandwidth unit. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0018] Figure 1a is a schematic diagram of beam direction according to an exemplary embodiment of the present disclosure.

[0019] Figure 1b is a schematic diagram of a communication system architecture according to an embodiment of the present disclosure.

[0020] Figure 2 is a schematic diagram of a communication method interaction according to an embodiment of the present disclosure.

[0021] Figure 3 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0022] Figure 4 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0023] Figure 5 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0024] Figure 6a is a schematic diagram of the structure of the terminal proposed in an embodiment of this disclosure.

[0025] Figure 6b is a schematic diagram of the structure of the network device proposed in an embodiment of this disclosure.

[0026] Figure 7a is a schematic diagram of the structure of a communication device proposed in an embodiment of this disclosure.

[0027] Figure 7b is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0028] This disclosure provides communication methods, terminals, network devices, storage media, and program products.

[0029] In a first aspect, embodiments of this disclosure propose a communication method, the method comprising: a terminal determining a first reference signal resource set, the first reference signal resource set being used for failure detection of a first bandwidth unit; wherein a bandwidth portion (BWP) of the terminal includes at least one of the first bandwidth units.

[0030] In some alternative embodiments of the first aspect, the first bandwidth unit includes a plurality of consecutive physical resource blocks (PRBs), and the method further includes: the terminal determining the location of the plurality of PRBs.

[0031] In some alternative embodiments of the first aspect, the first set of reference signal resources is determined based on the Transmission Configuration Indication (TCI) state.

[0032] In some alternative embodiments of the first aspect, the TCI state includes at least one of the following: a first TCI state corresponding to a control resource set; an indicated TCI state.

[0033] In some alternative embodiments of the first aspect, the method further includes: the terminal receiving first information sent by a network device, the first information being used to indicate a first TCI state corresponding to the control resource set.

[0034] In some alternative embodiments of the first aspect, the method further includes: the terminal receiving second information sent by a network device, the second information being used to indicate the indicated TCI state.

[0035] In some alternative embodiments of the first aspect, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit.

[0036] In some alternative embodiments of the first aspect, the number of control resource sets is multiple, and the first TCI state includes at least one TCI state corresponding to a control resource set.

[0037] In some alternative embodiments of the first aspect, the priority is determined in at least one of the following ways: among the plurality of control resource sets, the control resource set with a smaller period of the associated search space set has a higher priority; among the plurality of control resource sets, the control resource set with a larger index has a higher priority; among the plurality of control resource sets, the control resource set that follows the indicated TCI state has a higher priority than the control resource set that does not follow the indicated TCI state.

[0038] In some alternative embodiments of the first aspect, the indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

[0039] In some alternative embodiments of the first aspect, the indicated TCI state is used for the transmission of multiple channels / signals, the channels including at least one of the following: Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); the signals including at least one of the following: Channel State Information Reference Signal (CSI-RS); Aperiodic Reference Signal (SRS).

[0040] In some alternative embodiments of the first aspect, the second information includes at least one of the following: a Media Access Control Unit (MAC CE), the MAC CE being used to activate an indicated TCI state corresponding to a codepoint or an indicated TCI state corresponding to multiple codepoints respectively, the codepoint or multiple codepoints corresponding to an indication field of a Downlink Control Information (DCI); and a DCI, the indication field of the DCI being used to indicate one of the multiple codepoints activated by the MAC CE.

[0041] In some alternative embodiments of the first aspect, the indicated TCI state includes at least one of the following: a downlink second TCI state; a combined second TCI state.

[0042] In some alternative embodiments of the first aspect, the TCI state includes the indicated TCI state; or, the TCI state includes the indicated TCI state and a first TCI state corresponding to a control resource set that does not follow the indicated TCI state.

[0043] In some alternative embodiments of the first aspect, the indicated TCI state indicates multiple quasi-colocation types, and the first reference signal resource on the first reference signal resource set is the reference signal resource corresponding to type D in the indicated TCI state; wherein, type D is used to indicate spatial reception parameters.

[0044] In some alternative embodiments of the first aspect, the indicated TCI state has a higher priority than the first TCI state corresponding to the control resource set that does not follow the indicated TCI state.

[0045] In some alternative embodiments of the first aspect, the first bandwidth unit includes a first sub-band.

[0046] In a second aspect, a communication method is provided, the method comprising: a network device sending first information and / or second information to a terminal; the first information being used to indicate a first TCI state corresponding to a control resource set, the first TCI state being used to determine at least one reference signal resource in a first reference signal resource set; the second information being used to indicate an indicated TCI state, the indicated TCI state being used to determine at least one reference signal resource in the first reference signal resource set; the first reference signal resource set being used for failure detection of a first bandwidth unit, and a bandwidth portion (BWP) of the terminal including at least one of the first bandwidth units.

[0047] In some alternative embodiments of the second aspect, the first bandwidth unit comprises a plurality of consecutive physical resource blocks (PRBs).

[0048] In some alternative embodiments of the second aspect, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit.

[0049] In some alternative embodiments of the second aspect, the number of control resource sets is multiple, and the first TCI state includes the TCI state corresponding to at least one control resource set with high priority.

[0050] In some alternative embodiments of the second aspect, the priority is determined in at least one of the following ways: among the plurality of control resource sets, the control resource set with a smaller period of the associated search space set has a higher priority; among the plurality of control resource sets, the control resource set with a larger index has a higher priority; among the plurality of control resource sets, the control resource set that follows the indicated TCI state has a higher priority than the control resource set that does not follow the indicated TCI state.

[0051] In some alternative embodiments of the second aspect, the indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

[0052] In some alternative embodiments of the second aspect, the indicated TCI state is used for the transmission of multiple channels / signals, the channels including at least one of the following: Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); the signals including at least one of the following: Channel State Information Reference Signal (CSI-RS); Aperiodic Reference Signal (SRS).

[0053] In some alternative embodiments of the second aspect, the second information includes at least one of the following: a Media Access Control Unit (MAC CE), the MAC CE being used to activate an indicated TCI state corresponding to a codepoint or an indicated TCI state corresponding to multiple codepoints respectively, the codepoint or multiple codepoints corresponding to an indication field of a Downlink Control Information (DCI); and a DCI, the indication field of the DCI being used to indicate one of the multiple codepoints activated by the MAC CE.

[0054] In some alternative embodiments of the second aspect, the indicated TCI state includes at least one of the following: a downlink indicated TCI state; a joint indicated TCI state.

[0055] In some alternative embodiments of the second aspect, the TCI state includes the indicated TCI state; or, the TCI state includes the indicated TCI state and a first TCI state corresponding to a control resource set that does not conform to the indicated TCI state. In some alternative embodiments of the second aspect, the indicated TCI state indicates multiple quasi-colocation types, and a first reference signal resource on the first reference signal resource set is a reference signal resource corresponding to type D in the indicated TCI state; wherein, type D is used to indicate spatial reception parameters.

[0056] In some alternative embodiments of the second aspect, the indicated TCI state has a higher priority than the first TCI state corresponding to the control resource set that does not follow the indicated TCI state.

[0057] In some alternative embodiments of the second aspect, the first bandwidth unit includes a first sub-band.

[0058] Thirdly, a communication method is provided, comprising: a network device sending first information and / or second information to a terminal; the first information being used to indicate a first TCI state corresponding to a control resource set, the first TCI state being used to determine at least one reference signal resource in a first reference signal resource set; the second information being used to indicate an indicated TCI state, the indicated TCI state being used to determine at least one reference signal resource in the first reference signal resource set; the terminal determining the first reference signal resource set based on the first information and / or the second information; the first reference signal resource set being used for failure detection of a first bandwidth unit, and a bandwidth portion (BWP) of the terminal including at least one of the first bandwidth units.

[0059] Fourthly, a terminal is provided, comprising: a processing module, configured to determine a first reference signal resource set, the first reference signal resource set being used for failure detection of a first bandwidth unit; wherein a bandwidth portion (BWP) of the terminal includes at least one of the first bandwidth units.

[0060] In some alternative embodiments of the fourth aspect, the first bandwidth unit includes a plurality of consecutive physical resource blocks (PRBs), and the method further includes: the terminal determining the location of the plurality of PRBs.

[0061] In some alternative embodiments of the fourth aspect, the first set of reference signal resources is determined based on the Transmission Configuration Indication (TCI) state.

[0062] In some alternative embodiments of the fourth aspect, the TCI state includes at least one of the following: a first TCI state corresponding to the control resource set; an indicated TCI state.

[0063] In some alternative embodiments of the fourth aspect, the terminal further includes a transceiver module for receiving first information sent by a network device, the first information being used to indicate a first TCI state corresponding to the control resource set.

[0064] In some alternative embodiments of the fourth aspect, the terminal further includes a transceiver module for receiving second information sent by a network device, the second information being used to indicate the indicated TCI state.

[0065] In some alternative embodiments of the fourth aspect, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit.

[0066] In some alternative embodiments of the fourth aspect, the number of control resource sets is multiple, and the first TCI state includes at least one TCI state corresponding to a control resource set.

[0067] In some alternative embodiments of the fourth aspect, the priority is determined in at least one of the following ways: among the plurality of control resource sets, the control resource set with a smaller period of the associated search space set has a higher priority; among the plurality of control resource sets, the control resource set with a larger index has a higher priority; among the plurality of control resource sets, the control resource set that follows the indicated TCI state has a higher priority than the control resource set that does not follow the indicated TCI state.

[0068] In some alternative embodiments of the fourth aspect, the indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

[0069] In some alternative embodiments of the fourth aspect, the indicated TCI state is used for the transmission of multiple channels / signals, the channels including at least one of the following: Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); the signals including at least one of the following: Channel State Information Reference Signal (CSI-RS); Sounding Reference Signal (SRS).

[0070] In some optional embodiments of the fourth aspect, the second information includes at least one of the following: a Media Access Control Unit (MAC CE), the MAC CE being used to activate an indicated TCI state corresponding to a codepoint or an indicated TCI state corresponding to multiple codepoints respectively, the codepoint or multiple codepoints corresponding to an indication field of a Downlink Control Information (DCI); and a DCI, the indication field of the DCI being used to indicate one of the multiple codepoints activated by the MAC CE.

[0071] In some alternative embodiments of the fourth aspect, the indicated TCI state includes at least one of the following: a downlink second TCI state; a combined second TCI state.

[0072] In some alternative embodiments of the fourth aspect, the TCI state includes the indicated TCI state; or, the TCI state includes the indicated TCI state and a first TCI state corresponding to a control resource set that does not follow the indicated TCI state.

[0073] In some alternative embodiments of the fourth aspect, the indicated TCI state indicates multiple quasi-colocation types, and the first reference signal resource on the first reference signal resource set is the reference signal resource corresponding to type D in the indicated TCI state; wherein, type D is used to indicate spatial reception parameters.

[0074] In some alternative embodiments of the fourth aspect, the indicated TCI state has a higher priority than the first TCI state corresponding to the control resource set that does not follow the indicated TCI state.

[0075] In some alternative embodiments of the fourth aspect, the first bandwidth unit includes a first sub-band.

[0076] Fifthly, a network device is provided, comprising: a transceiver module, configured to send first information and / or second information to a terminal; the first information is configured to indicate a first TCI state corresponding to a control resource set, the first TCI state being configured to determine at least one reference signal resource in a first reference signal resource set; the second information is configured to indicate an indicated TCI state, the indicated TCI state being configured to determine at least one reference signal resource in the first reference signal resource set; the first reference signal resource set is used for failure detection of a first bandwidth unit, and a bandwidth portion (BWP) of the terminal includes at least one of the first bandwidth units.

[0077] In some alternative embodiments of the fifth aspect, the first bandwidth unit comprises a plurality of consecutive physical resource blocks (PRBs).

[0078] In some alternative embodiments of the fifth aspect, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit.

[0079] In some alternative embodiments of the fifth aspect, the number of control resource sets is multiple, and the first TCI state includes at least one TCI state corresponding to a control resource set with higher priority.

[0080] In some alternative embodiments of the fifth aspect, the priority is determined in at least one of the following ways: among the plurality of control resource sets, the control resource set with a smaller period of the associated search space set has a higher priority; among the plurality of control resource sets, the control resource set with a larger index has a higher priority; among the plurality of control resource sets, the control resource set that follows the indicated TCI state has a higher priority than the control resource set that does not follow the indicated TCI state.

[0081] In some alternative embodiments of the fifth aspect, the indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

[0082] In some alternative embodiments of the fifth aspect, the indicated TCI state is used for the transmission of multiple channels / signals, the channels including at least one of the following: Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); the signals including at least one of the following: Channel State Information Reference Signal (CSI-RS); Aperiodic Reference Signal (SRS).

[0083] In some alternative embodiments of the fifth aspect, the second information includes at least one of the following: a Media Access Control Unit (MAC CE), the MAC CE being used to activate an indicated TCI state corresponding to one codepoint or an indicated TCI state corresponding to multiple codepoints respectively, the one codepoint or multiple codepoints corresponding to an indication field of a Downlink Control Information (DCI); and a DCI, the indication field of the DCI being used to indicate one of the multiple codepoints activated by the MAC CE.

[0084] In some alternative embodiments of the fifth aspect, the indicated TCI state includes at least one of the following: a downlink indicated TCI state; a joint indicated TCI state.

[0085] In some alternative embodiments of the fifth aspect, the TCI state includes the indicated TCI state; or, the TCI state includes the indicated TCI state and a first TCI state corresponding to a control resource set that does not conform to the indicated TCI state. In some alternative embodiments of the fifth aspect, the indicated TCI state indicates multiple quasi-colocation types, and a first reference signal resource on the first reference signal resource set is a reference signal resource corresponding to type D in the indicated TCI state; wherein, type D is used to indicate spatial reception parameters.

[0086] In some alternative embodiments of the fifth aspect, the indicated TCI state has a higher priority than the first TCI state corresponding to the control resource set that does not follow the indicated TCI state.

[0087] In some alternative embodiments of the fifth aspect, the first bandwidth unit includes a first sub-band.

[0088] A sixth aspect provides a terminal, comprising: one or more processors; wherein the terminal is configured to execute the first aspect and any one of the communication methods in the first aspect.

[0089] A seventh aspect provides a network device, comprising: one or more processors; wherein the network device is configured to perform the second aspect and any one of the communication methods in the second aspect.

[0090] Eighthly, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the first aspect and any one of the communication methods in the first aspect, and the network device is configured to implement the second aspect and any one of the communication methods in the second aspect.

[0091] Ninth aspect, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform a communication method as described in the first aspect and any one thereof, or the second aspect and any one thereof.

[0092] In a tenth aspect, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in an optional implementation of the first or second aspect.

[0093] In one aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in an optional implementation of the first or second aspect.

[0094] In a twelfth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described in an optional implementation of the first or second aspect above.

[0095] It is understood that the terminals, access network devices, first network elements, other network elements, core network devices, communication systems, storage media, program products, computer programs, chips, or chip systems involved in the embodiments of this disclosure are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0096] This disclosure provides communication methods, terminals, network devices, storage media, and program products. In some embodiments, the terms "communication method" and "information processing method" can be used interchangeably, as can the terms "communication device" and "information processing device" and "communication device," and the terms "information processing system" and "communication system."

[0097] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0098] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. The technical environments of different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0099] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0100] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0101] In the embodiments disclosed herein, "multiple" refers to two or more.

[0102] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0103] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0104] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0105] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0106] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0107] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0108] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0109] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0110] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0111] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0112] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," etc.

[0113] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0114] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0115] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0116] In communication scenarios, high-frequency bands and massive MIMO (Massively Multi-Sized Antenna Arrays) are introduced to improve spectral efficiency. Massive MIMO can provide greater beamforming gain, effectively compensating for the transmission losses caused by high-frequency bands.

[0117] Figure 1a is a schematic diagram of beam direction according to an exemplary embodiment of the present disclosure. As shown in Figure 1a, the beam direction corresponds to different frequencies of the precoding matrix for the four antenna ports. That is, for the frequency f0, its beam direction is π / 3. For the frequency f0... At that time, its beam direction is π / 4. Here, π / 3 can also be referred to as 60 degrees, and π / 4 as 45 degrees. In Figure 1a, λ0 represents the wavelength. It corresponds to 4 antenna ports, where j represents the imaginary unit.

[0118] It's understandable that in high-frequency bands, when a bandwidth portion (BWP) is large, if the base station uses the same precoding (i.e., the same analog beam to transmit across the entire bandwidth), the direction of the transmitted beams reaching the terminal will differ across different bandwidths. Therefore, for the same terminal, the optimal transmitted beam at the base station will differ across different bandwidths. Consequently, the received beam at the terminal will also differ.

[0119] In some embodiments, different transmit beams are configured for different subbands on the BWP (base station-side transmit beams, configured based on the Transmission Configuration Indicator state (TCI state)). In other words, the beams for different subbands are configured independently.

[0120] In some embodiments, beam failure recovery can be implemented based on a beam-mounted antenna (BWP). However, in high-frequency massive MIMO scenarios, the bandwidth of a BWP can be very large, resulting in different optimal beams in different subbands of a single BWP. If beam failure recovery is still based on the BWP, it cannot reflect the channel conditions of the beams in different subbands.

[0121] Therefore, this disclosure provides a communication method that, by determining a first set of reference signal resources, enables failure detection for a first bandwidth unit, thereby facilitating link failure recovery based on the first bandwidth unit and improving communication efficiency.

[0122] Figure 1b is a schematic diagram of a communication system architecture according to an embodiment of the present disclosure.

[0123] As shown in Figure 1b, the communication system 100 includes a terminal 101 and a network device 102.

[0124] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0125] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0126] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0127] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0128] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0129] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0130] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0131] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1b, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1b are illustrative. The communication system may include all or some of the main bodies in FIG1b, or it may include other main bodies outside of FIG1b. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0132] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0133] Figure 2 is a schematic diagram of a communication method interaction according to an embodiment of the present disclosure. As shown in Figure 2, this embodiment of the present disclosure relates to a communication method for a communication system 100, the method including:

[0134] In step S2101, terminal 101 determines the first reference signal resource set.

[0135] In some embodiments, the first reference signal resource set is used for failure detection of the first bandwidth unit. A bandwidth portion (BWP) of the terminal includes at least one first bandwidth unit.

[0136] In some embodiments, the first bandwidth unit may be, for example, a first sub-band. That is, the first reference signal resource set may be used for failure detection of the first sub-band, but is not limited thereto, and may also be other bandwidth units included in the BWP. The first sub-band may also be a first frequency band.

[0137] In some embodiments, there may be one or more first bandwidth units. For example, when there are multiple first bandwidth units, the terminal may determine a first reference signal resource set for each first bandwidth unit. Multiple first bandwidth units may be different first bandwidth units of the same BWP.

[0138] In some embodiments, failure detection may be, for example, link failure detection or beam failure detection.

[0139] In some embodiments, the first set of reference signal resources may be determined based on the Transmission Configuration Indicator state (TCI state).

[0140] In some embodiments, the TCI state for determining the first reference signal resource set may include at least one of the following: the first TCI state corresponding to the control resource set (CORESET); and the indicated TCI state.

[0141] In some embodiments, the terminal may receive first information sent by a network device, the first information indicating a first TCI state corresponding to a control resource set. Based on the first TCI state indicated by the first information, the terminal may determine at least one reference signal resource in a first reference signal resource set.

[0142] In some embodiments, the terminal may receive second information sent by the network device, the second information being used to indicate an indicated TCI state. Based on the indicated TCI state indicated by the second information, the terminal may determine at least one reference signal resource in the first set of reference signal resources.

[0143] In some embodiments, the second information includes at least one of the following: a medium access control control element (MAC CE), which is used to activate an indicated TCI state corresponding to one codepoint or an indicated TCI state corresponding to multiple codepoints, wherein the one or more codepoints correspond to an indication field of downlink control information (DCI); and a DCI, wherein the indication field of the DCI is used to indicate one of the multiple codepoints activated by the MAC CE.

[0144] Optionally, the DCI indication field may contain at least one code point, each code point corresponding to an indicated TCI state. The MAC CE may activate the indicated TCI state corresponding to one code point in the DCI indication field. The activated indicated TCI state may be used to determine at least one reference signal resource in the first set of reference signal resources.

[0145] Optionally, the DCI indication field may contain at least one code point, each code point corresponding to an indicated TCI state. The MAC CE may activate the indicated TCI states corresponding to multiple code points in the DCI indication field. The DCI indication field may indicate one of the activated code points, thereby determining the indicated TCI state corresponding to that code point, which is used to determine at least one reference signal resource in the first set of reference signal resources.

[0146] In some embodiments, the control resource set may be a control resource set that follows the indicated Transmission Configuration Indicator state (indicated TCI state), or it may be a control resource set that does not follow the indicated TCI state. It is understood that if the control resource set follows the indicated TCI state, the first reference signal resource determined by the first TCI state corresponding to the control resource set can be the same as the first reference signal resource determined by the indicated TCI state. That is, if the TCI state used to determine the first reference signal resource set is the first TCI state corresponding to the control resource set, and the control resource set follows the indicated TCI state, then the first reference signal resource set determined based on the first TCI state includes the reference signal resource corresponding to the indicated TCI state.

[0147] In some embodiments, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit. For example, the terminal may determine that the frequency domain resources corresponding to the control resource set are located in the first bandwidth unit, and based on the first TCI state corresponding to the control resource set, determine at least one reference signal resource in the first reference signal resource set.

[0148] In some embodiments, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit. It can also be understood that the control resource set is the control resource set on the first bandwidth unit.

[0149] In some embodiments, if at least a portion of the frequency domain resources corresponding to multiple control resource sets are located on a first bandwidth unit, then the first TCI state may include the TCI state corresponding to at least one control resource set among the multiple control resource sets. That is, the number of control resource sets can be multiple, and the number of first TCI states can also be multiple.

[0150] In some embodiments, if the first bandwidth unit includes multiple frequency domain resources, each corresponding to a different control resource set, and the control resource sets have corresponding priorities, the terminal can select at least one TCI state corresponding to a control resource set based on the priority of the control resource set to determine the first reference signal resource set.

[0151] In some embodiments, the first TCI state includes the TCI state corresponding to at least one control resource set with high priority. For example, the TCI state corresponding to one or more control resource sets with the highest priority can be selected to determine at least one first reference signal resource in the first reference signal resource set. Alternatively, the TCI state corresponding to the control resource set with the second highest priority can be selected to determine at least one first reference signal resource in the first reference signal resource set. "Second highest priority" can be understood as second only to the highest priority. That is, the control resource set with the second highest priority may have a lower priority than the highest priority control resource set, but a higher priority than other control resource sets.

[0152] For example, suppose there are multiple control resource sets, ranked from highest to lowest priority as A, B, C, D, and E. That is, control resource set A has a higher priority than control resource set B, control resource set B has a higher priority than control resource set C, and so on. At least one control resource set with a high priority can be one or more of the highest priority control resource sets. For example, it can be the highest priority control resource set, which is control resource set A. Alternatively, it can be the two highest priority control resource sets, namely control resource sets A and B. Another example is the second highest priority control resource set, which is control resource set B. Yet another example is the two second highest priority control resource sets, namely control resource sets B and C.

[0153] For example, suppose there are multiple control resource sets, ranked from highest to lowest priority as A, B, C, D, and E. Control resource set A and control resource set B have the same priority, and control resource set C has a higher priority than control resource set C. Control resource set C has a higher priority than control resource set D, and so on. In this case, the control resource set with the highest priority can be selected; for example, control resource set A and control resource set B can be selected. Alternatively, either control resource set A or B can be chosen, and the TCI state corresponding to the selected control resource set can be used as the first TCI state to determine at least one first reference signal resource in the first reference signal resource set.

[0154] It is understood that the examples of "high-priority control resource sets" in this disclosure are not limited to the exemplary situations described above. For instance, in control resource sets with priority orders A, B, C, D, and E, control resource set D has a higher priority than control resource set E, and control resource set D can also be selected, with its corresponding TCI state being the first TCI state. This disclosure determines the first TCI state by selecting a control resource set with a relatively higher priority. In different embodiments, the actual control resource set selected may differ to address different scenarios, but the first TCI state determined by the control resource set with a higher priority can be better used to determine at least one first reference signal resource in the first reference signal resource set, thereby improving communication efficiency and increasing the success rate and accuracy of failure detection.

[0155] In some embodiments, the priority of control resource sets is determined in at least one of the following ways: among multiple control resource sets, the control resource set with a smaller period of the associated search space set has a higher priority; among multiple control resource sets, the control resource set with a larger index has a higher priority; among multiple control resource sets, the control resource set that follows the indicated TCI state has a higher priority than the control resource set that does not follow the indicated TCI state.

[0156] In some embodiments, it is necessary to determine which reference signal resources in the TCI states corresponding to the control resource sets can be included in the first reference signal resource set based on the priority of the control resource sets when the number of control resource sets is greater than the number of reference signal resources in the first reference signal resource set supported by the terminal, or when the number of TCI states corresponding to the control resource sets is greater than the number of reference signal resources in the first reference signal resource set supported by the terminal.

[0157] Optionally, a control resource set can be associated with a search space set. The control resource set with a shorter period of the associated search space set has a higher priority.

[0158] Optionally, different control resource sets can correspond to different indexes. Control resource sets with larger indexes have higher priority. For example, the indexes corresponding to different control resource sets could be #0, #1, #2, etc. Of course, control resource sets with smaller indexes can also have higher priority; this disclosure does not impose any limitations. The index can also be called an identifier (ID) or simply an index.

[0159] Optionally, the control resource set can be a control resource set that follows the indicated TCI state or a control resource set that does not follow the indicated TCI state. Control resource sets that follow the indicated TCI state have higher priority than control resource sets that do not follow the indicated TCI state.

[0160] In some embodiments, the indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

[0161] In some embodiments, the indicated TCI state is used for the transmission of multiple channels / signals, and the channels include at least one of the following: Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); and the signals include at least one of the following: Channel Status Information-Reference Signal (CSI-RS); and Sounding Reference Signal (SRS).

[0162] In some embodiments, CSI-RS may be aperiodic, for example.

[0163] In some embodiments, the SRS may be aperiodic, for example.

[0164] In some embodiments, the indicated TCI state includes at least one of the following: a downlink second TCI state; a combined second TCI state.

[0165] In some embodiments, a TCI state may include an indicated TCI state; or, a TCI state may include an indicated TCI state and a first TCI state corresponding to a control resource set that does not follow the indicated TCI state.

[0166] In some embodiments, if a TCI state includes an indicated TCI state and a first TCI state corresponding to a control resource set that does not follow the indicated TCI state, the indicated TCI state has a higher priority than the first TCI state corresponding to a control resource set that does not follow the indicated TCI state.

[0167] In some embodiments, the indicated TCI state indicates multiple quasi-co-location types, and the first reference signal resource on the first reference signal resource set is the reference signal resource corresponding to type D in the indicated TCI state; wherein, type D is used to indicate spatial reception parameters.

[0168] In step S2102, terminal 101 determines the second reference signal resource set.

[0169] In some embodiments, a second set of reference signal resources is used to determine a new beam for the first bandwidth unit.

[0170] In some embodiments, the second set of reference signal resources may be determined based on the configuration of the network device. For example, the network device configures the second set of reference signal resources.

[0171] In some embodiments, the new beam may also be referred to as a candidate beam or a target beam.

[0172] In some embodiments, a new beam can be any one or more selected from a set of candidate beams.

[0173] In some embodiments, the terminal may also determine the location of multiple physical resource blocks (PRBs) of the first bandwidth unit.

[0174] In some embodiments, the first bandwidth unit may include a plurality of consecutive PRBs. The terminal may determine the location of the plurality of PRBs so as to use the corresponding TCI state to transmit or receive channels and / or signals at the corresponding frequency domain locations.

[0175] In step S2103, terminal 101 selects a second reference signal resource from the second reference signal resource set and determines the beam corresponding to the selected second reference signal resource as a new beam.

[0176] In some embodiments, the signal strength corresponding to the selected second reference signal resource is higher than a second threshold. That is, the terminal selects a second reference signal resource from the set of second reference signal resources whose signal strength is higher than the second threshold, and determines the beam corresponding to it as a new beam.

[0177] In some embodiments, the signal strength may include, but is not limited to, at least one of the following: RSRP, RSRQ, SINR.

[0178] In some embodiments, the size of the second threshold value is not limited, and the second threshold value and the first threshold value may be the same or different.

[0179] In step S2104, network device 102 sends third information to terminal 101.

[0180] In some embodiments, terminal 101 receives third information sent by network device 102.

[0181] In some embodiments, the third information is feedback information in response to the fourth information. The fourth information may be sent by terminal 101 to network device 102 in response to detecting that the quality of the wireless link corresponding to the first reference signal resource on the first reference signal resource set is lower than a first threshold. The fourth information is used for link failure recovery or beam failure recovery of the first bandwidth unit.

[0182] In some embodiments, the third information may be a PDCCH, and the hybrid automatic repeat-request processing number (HARQ processing number) of the Physical Uplink Shared Channel (PUSCH) scheduled by the third information and the PUSCH scheduled by the previous PDCCH may be the same, and the new data indication (NDI) may be flipped.

[0183] In some embodiments, the wireless link quality may include, but is not limited to, at least one of the following: block error rate (BLER), reference signal receiving power (RSRP), signal to interference plus noise ratio (SINR), and reference signal received quality (RSRQ) of the Physical Downlink Control Channel (PDCCH). If the terminal detects that the wireless link quality corresponding to the first reference signal resource in the first reference signal resource set is lower than a first threshold, it may send fourth information to the network device. The magnitude of the first threshold is not limited in this disclosure.

[0184] In some embodiments, the radio link quality corresponding to a first reference signal resource in a first reference signal resource set is lower than a first threshold, including: the radio link quality corresponding to one or all of the first reference signal resources in the first reference signal resource set is lower than the first threshold.

[0185] In some embodiments, the names of the fourth and third information are not limited. The fourth information may be, for example, "failure recovery request information". The third information may be, for example, "feedback information", "PDCCH", etc., and this disclosure does not limit them.

[0186] In step S2105, after receiving the third information, terminal 101 transmits it based on the new beam on the first bandwidth unit after passing through N symbols.

[0187] In some embodiments, after receiving the third information, the terminal 101 transmits at least one of the following on the first bandwidth unit after passing through N symbols, based on the quasi-co-address parameters, spatial relationship information, or spatial domain filter corresponding to the new beam: PDCCH; PDSCH; Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH).

[0188] In some embodiments, the quasi-co-location parameters include at least one of the following types: Type A, which indicates Doppler frequency shift, Doppler spread, average delay, and delay spread; Type B, which indicates Doppler frequency shift and Doppler spread; Type C, which indicates Doppler frequency shift and average delay; Type D, which indicates spatial reception parameters; and power control. Each type corresponds to a reference signal resource identifier. The reference signal resource identifiers corresponding to different types may be the same or different.

[0189] In some embodiments, a beam can be referred to as a beam, a spatial Rx parameter, a quasi-co-location (QCL) type D, a spatial setting, a spatial reception filter, a spatial transmission filter, a spatial domain filter, a TCI state, an indicated TCI state, a joint TCI state, a downlink TCI state (DL TCI state), an uplink TCI state (UL TCI state), a unified TCI state, a common TCI state, and spatial relation information, etc.

[0190] In some embodiments, a symbol is a unit in the time domain. N can be determined according to actual conditions, and this disclosure does not limit it. The symbol length can be determined based on a specified subcarrier space (SCS).

[0191] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2105. For example, step S2101 may be implemented as a standalone embodiment, but is not limited thereto.

[0192] In some embodiments, steps S2102-S2105 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0193] Figure 3 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3, this embodiment of the present disclosure relates to a communication method executed by terminal 101, the method including:

[0194] Step S3101: Determine the first reference signal resource set.

[0195] The optional implementation of step S3101 can be found in the optional implementation of step S2101 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0196] In some embodiments, the first set of reference signal resources may be determined based on the TCI state.

[0197] Step S3102: Determine the second reference signal resource set.

[0198] The optional implementation of step S3102 can be found in the optional implementation of step S2102 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0199] In some embodiments, the second set of reference signal resources may be determined based on the configuration of the network device.

[0200] Step S3103: Select a second reference signal resource from the second reference signal resource set, and determine the beam corresponding to the selected second reference signal resource as the new beam.

[0201] The optional implementation of step S3103 can be found in the optional implementation of step S2103 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0202] Step S3104: Obtain third information.

[0203] The optional implementation of step S3104 can be found in the optional implementation of step S2104 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0204] In some embodiments, terminal 101 receives third information sent by network device 102, but is not limited thereto; it may also receive third information sent by other entities.

[0205] In some embodiments, terminal 101 obtains third information as defined by the protocol.

[0206] In some embodiments, terminal 101 obtains third information from upper layer(s).

[0207] In some embodiments, terminal 101 processes the information to obtain third information.

[0208] In some embodiments, step S3104 is omitted, and the terminal 101 autonomously implements the function indicated by the third information, or the above function is defaulted or set to default.

[0209] Step S3105: After obtaining the third information, the data is transmitted based on the new beam through N symbols on the first bandwidth unit.

[0210] The optional implementation of step S3105 can be found in the optional implementation of step S2105 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0211] Figure 4 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4, this embodiment of the present disclosure relates to a communication method executed by a network device 102, the method comprising:

[0212] Step S4101: Send the third message.

[0213] The optional implementation of step S4101 can be found in the optional implementation of step S2104 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0214] In some embodiments, network device 102 sends third information to terminal 101, but is not limited thereto; it may also send third information to other entities.

[0215] In step S4102, after sending the third information, the transmission is performed on the first bandwidth unit based on the new beam after N symbols.

[0216] The optional implementation of step S4102 can be found in the optional implementation of step S2105 in Figure 2, as well as other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0217] Figure 5 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 5, this disclosure relates to a communication method, which includes:

[0218] In step S5101, terminal 101 determines the first reference signal resource set.

[0219] In step S5102, terminal 101 receives third information sent by network device 102.

[0220] In step S5103, after receiving the third information sent by the network device 102, the terminal 101 transmits the information based on the new beam on the first bandwidth unit after passing through N symbols.

[0221] In some embodiments, the above methods may include the methods of the embodiments related to the communication system 100, terminal 101, and network device 102, which will not be described again here.

[0222] This disclosure provides a communication method as follows:

[0223] In some embodiments, the terminal determines a first reference signal resource set, which includes at least one reference signal resource. When the wireless link quality corresponding to a reference signal resource in the first reference signal resource set is detected to be lower than a first threshold, a first indication is sent. The first reference signal resource set is used for failure detection in a first sub-band (or a first frequency band), and the first indication is used to determine failure recovery request information in the first sub-band. The first reference signal resource set is determined based on the TCI state.

[0224] In some embodiments, the first instruction may be the fourth information in the above embodiments.

[0225] In some embodiments, the terminal can also determine the first set of reference signal resources corresponding to the second sub-band. The first sub-band and the second sub-band can be different sub-bands of the same BWP of the terminal.

[0226] In some embodiments, a subband comprises multiple consecutive PRBs (physical resource blocks). Each subband may have the same bandwidth. The terminal also needs to determine the location of the PRB corresponding to each subband, for example, based on network configuration information.

[0227] In some embodiments, the TCI state includes the reference signal resources corresponding to the TCI state of the first control resource set.

[0228] In some embodiments, the frequency domain resources of the first control resource set are included in the first sub-band.

[0229] In some embodiments, when the first subband contains multiple control resource sets, the reference signal resource corresponding to the TCI state of the control resource set with higher priority is determined as the reference preferred signal resource in the first reference signal resource set.

[0230] In some embodiments, the smaller the period of the search space corresponding to the control resource set, the higher the priority of the control resource set; the larger the identifier of the control resource set, the higher the priority; and the CORESET that follows the unified / indicated TCI state has a higher priority than the CORESET that does not follow it.

[0231] In some embodiments, the TCI state includes the unified TCI state, or the indicated TCI state.

[0232] In some embodiments, the indicated TCI state can be used for the transmission of PDCCH, PDSCH, PUCCH, PUSCH, CSI-RS, and aperiodic SRS.

[0233] In some embodiments, the indicated TCI state is determined based on MAC CE (the indicated TCI state corresponding to a codepoint in the TCI field of the MAC CE-activated DCI), or based on MAC CE+DCI (the indicated TCI states corresponding to multiple codepoints in the TCI field of the MAC CE-activated DCI, where the TCI field of the DCI indicates one of the multiple codepoints).

[0234] In some embodiments, the indicated TCI state includes the DL / joint TCI state.

[0235] In some embodiments, when the TCI state contains two RSs, i.e., different QCL types correspond to different RSs, the RS corresponding to QCL type D or the RS corresponding to the spatial parameter is taken.

[0236] In some embodiments, the indicated TCI state is the indicated TCI state corresponding to the first sub-band. That is, the base station can indicate different indicated TCI states for different sub-bands.

[0237] In some embodiments, the first control resource set may be a CORESET that follows the indicated TCI state, or a CORESET that does not follow the unified TCI state.

[0238] In some embodiments, some CORESETs follow a unified / indicated TCI state, so the first reference signal resource set already includes the reference signal resources corresponding to the indicated TCI state. Conversely, some CORESETs do not follow a unified TCI state, so the first reference signal resource set also includes non-indicated TCI states.

[0239] In some embodiments, all CORESETs may not follow the unified TCI state, or the system may not have a unified TCI state at all, and the TCI state may be determined directly based on the CORESET's TCI state.

[0240] In some embodiments, the reference signal corresponding to the indicated TCI state is first added to the first reference signal resource set, and then the reference signal resource corresponding to the TCI state of the CORESET that does not follow the unified TCI state is added to the first reference signal resource set.

[0241] In some embodiments, the terminal determines a second set of reference signal resources, which is used to determine candidate beams for the first sub-band. For example, this can be determined by receiving network-side configuration information.

[0242] In some embodiments, the terminal may also determine the second reference signal resource set corresponding to the second sub-band.

[0243] In some embodiments, the terminal determines a first reference signal resource from a second set of reference signal resources as a new beam, a target beam, or a candidate beam.

[0244] In some embodiments, the first instruction includes transmitting a random access preamble on a random access RO (RACH occasion), wherein the random access RO and the random access preamble are random access preambles corresponding to a first reference signal resource, or random access ROs and random access preambles corresponding to a synchronization channel block (the first reference signal resource and the synchronization channel block SSB have a QCL relationship) corresponding to the first reference signal resource.

[0245] In some embodiments, the random access RO and the random access preamble correspond to the first subband.

[0246] In some embodiments, the frequency domain resource corresponding to RO is located on the first sub-band. Alternatively, RO and preamble to sub-band may have other mapping relationships, not only based on frequency domain resources, but also based on time domain resources and / or preamble index to correspond to different sub-bands.

[0247] In some embodiments, the first indication information includes at least one of a scheduling request (SR) and / or a UL MAC CE.

[0248] In some embodiments, the scheduling request is an SR for a link failure or beam failure, where the SR is the SR corresponding to the first subband or the SR on the PUCCH resource corresponding to the first subband.

[0249] In some embodiments, the PUCCH resource corresponding to the first sub-band includes the PUCCH resource being on the first sub-band if the first sub-band is used for both uplink and downlink; or the PUCCH resource corresponding to the first sub-band includes the PUCCH resource being on the uplink sub-band corresponding to the first sub-band if the first sub-band is used only for downlink; or the SR corresponding to the first sub-band is distinguished not only based on frequency domain resources, but also including time domain or sequence to correspond to different sub-bands.

[0250] In some embodiments, the UL MAC CE includes at least one of the following: a first sub-band identifier, a cell identifier, a first reference signal resource set identifier, a second reference signal resource set identifier, and a reference signal resource identifier corresponding to the new beam.

[0251] In some embodiments, the UL MAC is transmitted on the PUSCH.

[0252] In some embodiments, the terminal receives feedback from the base station, and after the first symbol following the feedback, transmits at least one of PDCCH, PDSCH, PUCCH, and PUSCH on the first subband based on the QCL (Quasi co-location) or spatial relation info corresponding to the new beam.

[0253] In some embodiments, there are 4 QCL Types, each QCL Type corresponding to a reference signal resource identifier.

[0254] 'Type A': {Doppler shift, Doppler spread, average delay, delay spread};

[0255] 'typeB':{Doppler shift,Doppler spread};

[0256] 'typeC':{Doppler shift,average delay};

[0257] 'typeD': {Spatial Rx parameter} is commonly known as a beam.

[0258] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0259] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0260] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0261] Figure 6a is a schematic diagram of the structure of a terminal proposed in an embodiment of this disclosure. As shown in Figure 6a, the terminal 6100 may include at least one of a processing module 6101 and a transceiver module 6102. The processing module 6101 is used to determine a first reference signal resource set, which is used for failure detection of a first bandwidth unit; wherein a bandwidth portion (BWP) of the terminal includes at least one first bandwidth unit.

[0262] In some embodiments, the first bandwidth unit includes a plurality of consecutive physical resource blocks (PRBs), and the method further includes: the terminal determining the location of the plurality of PRBs.

[0263] In some embodiments, the first set of reference signal resources is determined based on the Transmission Configuration Indication (TCI) state.

[0264] In some embodiments, the TCI state includes at least one of the following: a first TCI state corresponding to a control resource set; and an indicated TCI state.

[0265] In some embodiments, the transceiver module 6102 is used to receive first information sent by the network device, the first information being used to indicate a first TCI state corresponding to the control resource set.

[0266] In some embodiments, the transceiver module 6102 is used to receive second information sent by the network device, the second information being used to indicate the indicated TCI state.

[0267] In some embodiments, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit.

[0268] In some embodiments, the number of control resource sets is multiple, and the first TCI state includes at least one TCI state corresponding to a control resource set.

[0269] In some embodiments, control resource sets are assigned priorities, which are determined in at least one of the following ways: among multiple control resource sets, the control resource set with the smaller period of the associated search space set has a higher priority; among multiple control resource sets, the control resource set with the larger index has a higher priority; among multiple control resource sets, the control resource set that follows the indicated TCI state has a higher priority than the control resource set that does not follow the indicated TCI state.

[0270] In some embodiments, the indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

[0271] In some embodiments, the indicated TCI state is used for the transmission of multiple channels / signals, and the channels include at least one of the following: Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); and the signals include at least one of the following: Channel State Information Reference Signal (CSI-RS); and Sound Reference Signal (SRS).

[0272] In some embodiments, the second information includes at least one of the following: a Media Access Control Unit (MAC CE), which is used to activate downlink control information (DCI) of an indicated TCI state corresponding to a codepoint or an indicated TCI state corresponding to multiple codepoints; and a DCI, the indication field of which is used to indicate one of the multiple codepoints activated by the MAC CE.

[0273] In some embodiments, the indicated TCI state includes at least one of the following: a downlink second TCI state; a combined second TCI state.

[0274] In some embodiments, the TCI state includes the indicated TCI state; or, the TCI state includes the indicated TCI state and a first TCI state corresponding to the control resource set that does not follow the indicated TCI state.

[0275] In some embodiments, the indicated TCI state indicates multiple quasi-co-location types, and the first reference signal resource on the first reference signal resource set is the reference signal resource corresponding to type D in the indicated TCI state; wherein, type D is used to indicate spatial reception parameters.

[0276] In some embodiments, the indicated TCI state has a higher priority than the first TCI state corresponding to the control resource set that does not follow the indicated TCI state.

[0277] In some alternative embodiments of the second aspect, the first bandwidth unit includes a first sub-band.

[0278] Figure 6b is a schematic diagram of the network device proposed in an embodiment of this disclosure. As shown in Figure 6b, the network device 6200 may include at least one of a transceiver module 6201 and a processing module 6202. The transceiver module 6201 is used to send first information and / or second information to the terminal; the first information is used to indicate a first TCI state corresponding to a control resource set, and the first TCI state is used to determine at least one reference signal resource in a first reference signal resource set; the second information is used to indicate an indicated TCI state, and the indicated TCI state is used to determine at least one reference signal resource in the first reference signal resource set; the first reference signal resource set is used for failure detection of a first bandwidth unit, and a bandwidth portion (BWP) of the terminal includes at least one first bandwidth unit.

[0279] In some embodiments, the first bandwidth unit includes a plurality of consecutive physical resource blocks (PRBs).

[0280] In some embodiments, at least a portion of the frequency domain resources corresponding to the control resource set are included within the first bandwidth unit.

[0281] In some embodiments, the number of control resource sets is multiple, and the first TCI state includes at least one TCI state corresponding to a control resource set with higher priority.

[0282] In some embodiments, priority is determined in at least one of the following ways: among multiple control resource sets, the control resource set with a smaller period of the associated search space set has a higher priority; among multiple control resource sets, the control resource set with a larger index has a higher priority; among multiple control resource sets, the control resource set that follows the indicated TCI state has a higher priority than the control resource set that does not follow the indicated TCI state.

[0283] In some embodiments, the indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

[0284] In some embodiments, the indicated TCI state is used for the transmission of multiple channels / signals. The channels include at least one of the following: Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); and the signals include at least one of the following: Channel State Information Reference Signal (CSI-RS); and Aperiodic Reference Signal (SRS).

[0285] In some embodiments, the second information includes at least one of the following: a Media Access Control Unit (MAC CE), which is used to activate downlink control information (DCI) of an indicated TCI state corresponding to a codepoint or an indicated TCI state corresponding to multiple codepoints; and a DCI, the indication field of which is used to indicate one of the multiple codepoints activated by the MAC CE.

[0286] In some embodiments, the indicated TCI state includes at least one of the following: a downlink indicated TCI state; a joint indicated TCI state.

[0287] In some embodiments, the TCI state includes an indicated TCI state; or, the TCI state includes an indicated TCI state and a first TCI state corresponding to a control resource set that does not conform to the indicated TCI state. In some embodiments, the indicated TCI state indicates multiple quasi-colocation types, and the first reference signal resource on the first reference signal resource set is the reference signal resource corresponding to type D in the indicated TCI state; wherein, type D is used to indicate spatial reception parameters.

[0288] In some embodiments, the indicated TCI state has a higher priority than the first TCI state corresponding to the control resource set that does not follow the indicated TCI state.

[0289] In some embodiments, the first bandwidth unit includes a first sub-band.

[0290] Figure 7a is a schematic diagram of a communication device according to an embodiment of this disclosure. The communication device 7100 can be a network device, a terminal, or a chip, chip system, or processor that supports the network device in implementing any of the above methods; alternatively, the network device can be an access network device, a core network device, etc. Optionally, the terminal can be a user equipment, etc. The communication device 7100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0291] As shown in Figure 7a, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device, execute programs, and process program data. The communication device 7100 is used to execute any of the above methods. Optionally, the communication device can be a base station, a baseband chip, a terminal device, a terminal device chip, a DU (Distributed Unit), or a CU (Computer Integrated Circuit), etc.

[0292] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may also be located outside the communication device 7100.

[0293] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceivers 7103 perform communication steps S2101 such as sending and / or receiving in the above method, and the processor 7101 performs other steps.

[0294] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0295] In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7102, and the interface circuit 7104 can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0296] The communication device 7100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 7100 described in this disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0297] Figure 7b is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. For cases where the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the chip 7200 shown in Figure 7b, but it is not limited thereto.

[0298] Chip 7200 includes one or more processors 7201, which are used to perform any of the above methods.

[0299] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected to memory 7203, and the interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and the interface circuit 7202 can be used to send signals to memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201.

[0300] In some embodiments, the interface circuit 7202 performs communication steps S2101 such as sending and / or receiving in the above method, and the processor 7201 performs other steps.

[0301] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0302] In some embodiments, chip 7200 further includes one or more memories 7203 for storing instructions. Optionally, all or part of the memories 7203 may be located outside of chip 7200.

[0303] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 7100, cause the communication device 7100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0304] This disclosure also provides a program product that, when executed by the communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0305] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method characterized by comprising: The method comprises: The terminal determines a first reference signal resource set, which is used for failed detection of a first bandwidth unit; A bandwidth part (BWP) of the terminal comprises at least one first bandwidth unit.

2. The method of claim 1, wherein, The first bandwidth unit comprises a plurality of contiguous physical resource blocks (PRBs), and the method further comprises: The terminal determines the position of the plurality of PRBs.

3. The method according to any one of claims 1-2, characterized in that, The first reference signal resource set is determined based on a transmission configuration indication (TCI) state.

4. The method of claim 3, wherein, The TCI state comprises at least one of the following: A first TCI state corresponding to a control resource set; An indicated TCI state.

5. The method of claim 4, wherein, The method further comprises: The terminal receives first information sent by a network device, wherein the first information is used to indicate a first TCI state corresponding to the control resource set.

6. The method of claim 4, wherein, The method further comprises: The terminal receives second information sent by a network device, wherein the second information is used to indicate the indicated TCI state.

7. The method of claim 4, wherein, At least a part of the frequency domain resource corresponding to the control resource set is contained in the first bandwidth unit.

8. The method of claim 4, wherein, The number of control resource sets is a plurality, and the first TCI state comprises a TCI state corresponding to at least one control resource set with high priority.

9. The method of claim 8, wherein, The priority is determined in at least one of the following ways: Among the plurality of control resource sets, the smaller the period of the associated search space set, the higher the priority of the control resource set; Among the plurality of control resource sets, the larger the index, the higher the priority of the control resource set; Among the plurality of control resource sets, the priority of the control resource set following the indicated TCI state is higher than that of the control resource set not following the indicated TCI state.

10. The method of claim 4, wherein, The indicated TCI state is an indicated TCI state corresponding to the first bandwidth unit.

11. The method of claim 4, wherein, The indicated TCI state is used for transmission of a plurality of channels / signals, wherein the channels comprise at least one of the following: a physical downlink control channel (PDCCH); a physical downlink shared channel (PDSCH); a physical uplink control channel (PUCCH); a physical uplink shared channel (PUSCH); The signals comprise at least one of the following: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS).

12. The method of claim 6, wherein, The second information comprises at least one of the following: A medium access control control element (MAC CE), wherein the MAC CE is used to activate an indicated TCI state corresponding to one codepoint or a plurality of indicated TCI states corresponding to a plurality of codepoints, and the one codepoint or the plurality of codepoints correspond to an indication field of a downlink control information (DCI); The DCI, wherein an indication field of the DCI is used to indicate one of the plurality of codepoints activated by the MAC CE. ​ 13. The method of claim 4, wherein, The indicated TCI state comprises at least one of: An indicated TCI state of downlink; An indicated TCI state of joint.

14. The method of claim 4, wherein, The TCI state comprises the indicated TCI state; or, The TCI state comprises an indicated TCI state and a first TCI state corresponding to a control resource set not following the indicated TCI state.

15. The method of claim 14, wherein, The indicated TCI state indicates multiple quasi-co-location types, and a first reference signal resource on the first reference signal resource set is a reference signal resource corresponding to a type D in the indicated TCI state. The type D is used to indicate a spatial reception parameter.

16. The method of claim 14, wherein, The priority of the indicated TCI state is higher than the first TCI state corresponding to the control resource set not following the indicated TCI state.

17. The method of any of claims 1-16, wherein, The first bandwidth unit comprises a first sub-band.

18. A method of communication, comprising: The method comprises: The network device sends first information and / or second information to the terminal; The first information is used to indicate a first TCI state corresponding to a control resource set, and the first TCI state is used to determine at least one reference signal resource in a first reference signal resource set; The second information is used to indicate an indicated TCI state, and the indicated TCI state is used to determine at least one reference signal resource in the first reference signal resource set; The first reference signal resource set is used for failed detection of the first bandwidth unit, and one bandwidth part (BWP) of the terminal comprises at least one first bandwidth unit.

19. The method of claim 18, wherein, The first bandwidth unit comprises a plurality of consecutive physical resource blocks (PRBs).

20. The method of claim 18, wherein, At least a part of the frequency domain resource corresponding to the control resource set is contained in the first bandwidth unit.

21. The method of claim 18, wherein, The number of control resource sets is multiple, and the first TCI state comprises a TCI state corresponding to at least one control resource set with high priority.

22. The method of claim 21, wherein, The priority is determined in at least one of the following ways: Among the multiple control resource sets, the smaller the period of the associated search space set of the control resource set, the higher the priority; Among the multiple control resource sets, the larger the index of the control resource set, the higher the priority; Among the multiple control resource sets, the priority of the control resource set following the indicated TCI state is higher than that of the control resource set not following the indicated TCI state.

23. The method of claim 18, wherein, The indicated TCI state is the indicated TCI state corresponding to the first bandwidth unit.

24. The method of claim 18, wherein, The indicated TCI state is used for transmission of multiple channels / signals, the channels including at least one of the following: a physical downlink control channel (PDCCH); a physical downlink shared channel (PDSCH); a physical uplink control channel (PUCCH); a physical uplink shared channel (PUSCH). The signals include at least one of the following: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS).

25. The method of claim 18, wherein, The second information includes at least one of the following: a medium access control control element (MAC CE), the MAC CE being used to activate an indicated TCI state corresponding to one codepoint or multiple indicated TCI states corresponding to multiple codepoints, the one codepoint or multiple codepoints corresponding to an indication field of downlink control information (DCI); the DCI, the indication field of the DCI being used to indicate one of the multiple codepoints activated by the MAC CE.

26. The method of claim 18, wherein, The indicated TCI state includes at least one of the following: an indicated TCI state of downlink; a joint indicated TCI state.

27. The method of claim 18, wherein, The TCI state includes the indicated TCI state; or The TCI state includes an indicated TCI state and a first TCI state corresponding to a control resource set not following the indicated TCI state.

28. The method of claim 27, wherein, The indicated TCI state indicates multiple quasi-co-location types, and a first reference signal resource on the first reference signal resource set is a reference signal resource corresponding to a type D in the indicated TCI state; The type D is used to indicate a spatial reception parameter.

29. The method of claim 27, wherein, The priority of the indicated TCI state is higher than that of the first TCI state corresponding to the control resource set not following the indicated TCI state.

30. The method of any of claims 18-29, wherein, The first bandwidth unit includes a first sub-band.

31. A method of communication, comprising: Comprising: a network device sends first information and / or second information to a terminal; The first information is used to indicate a first TCI state corresponding to a control resource set, the first TCI state being used to determine at least one reference signal resource in a first reference signal resource set; The second information is used to indicate an indicated TCI state, the indicated TCI state being used to determine at least one reference signal resource in the first reference signal resource set; The terminal determines the first reference signal resource set based on the first information and / or the second information; The first reference signal resource set is used for failed detection of a first bandwidth unit, and one bandwidth part (BWP) of the terminal includes at least one first bandwidth unit.

32. A terminal, characterized by Comprising: The processing module is configured to determine a first reference signal resource set, the first reference signal resource set being used for failure detection of a first bandwidth unit. The one bandwidth part (BWP) of the terminal comprises at least one first bandwidth unit.

33. A network device, comprising: The processing module is configured to determine a first reference signal resource set, the first reference signal resource set being used for failure detection of a first bandwidth unit. The transceiver is configured to send first information and / or second information to the terminal. The first information is used to indicate a first TCI state corresponding to a control resource set, the first TCI state being used to determine at least one reference signal resource in the first reference signal resource set. The second information is used to indicate an indicated TCI state, the indicated TCI state being used to determine at least one reference signal resource in the first reference signal resource set. The first reference signal resource set is used for failure detection of a first bandwidth unit, and the one bandwidth part (BWP) of the terminal comprises at least one first bandwidth unit.

34. A terminal, characterized by The one or more processors are configured to perform the communication method in any one of claims 1-17. The one or more processors are configured to perform the communication method in any one of claims 18-30. The terminal and the network device, wherein the terminal is configured to implement the communication method in any one of claims 1-17, and the network device is configured to implement the communication method in any one of claims 18-30.

35. A network device, comprising: The storage medium stores instructions, when the instructions run on the communication device, causing the communication device to perform the communication method in any one of claims 1-17 or 18-30. The computer program is executed by the communication device, causing the communication device to perform the communication method in any one of claims 1-17 or 18-30. ​ 36. A communication system, characterized by ​ ​ 37. A storage medium characterized by ​ ​ 38. A program product, characterized by ​ ​ ​

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