Quasi co-location assumption determination method, terminal, network device, and system

Abstract

The present disclosure relates to a quasi co-location (QCL) assumption determination method, a terminal, a network device, and a system. The method comprises: a terminal determines a first QCL assumption, wherein the first QCL assumption is a QCL assumption of an aperiodic channel state information reference signal (AP-CSI-RS), a time domain interval between the AP CSI-RS and a first physical downlink control channel (PDCCH) that schedules the AP CSI-RS is less than or equal to a first time threshold, the AP CSI-RS and another downlink signal are located in the same symbol, and a control resource set (CORESET) corresponding to the first PDCCH corresponds to a first CORESET pool index. By means of embodiments of the present disclosure, a configuration and determination method for a TCI state corresponding to an aperiodic reference signal resource can be determined, and the transmission performance of a multi-transmission reception point is improved.

Description

Quasi-co-location hypothesis determination method, terminal, network equipment and system Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method, terminal, network device, and system for determining a quasi-co-location hypothesis. Background Art

[0002] In New Radio (NR), especially in operating frequency range 2, beam-based transmission and reception are required to ensure coverage.

[0003] Based on the discussion in Rel-17, in order to reduce signaling overhead, it is expected to use a unified Transmission Configuration Indicator State (unified TCI State).

[0004] Summary of the Invention

[0005] When PDSCH has multiple TCI indications, or when there are multiple overlapping PDSCHs using different TCI states, the terminal needs to use which TCI state for reception.

[0006] The embodiments of the present disclosure provide a method, terminal, network device, and system for determining a quasi-co-location hypothesis.

[0007] According to a first aspect of an embodiment of the present disclosure, a method for determining a quasi-co-location hypothesis is proposed, the method comprising: a terminal determining a first quasi-co-location QCL hypothesis, where the first QCL hypothesis is a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; and the control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

[0008] According to the second aspect of an embodiment of the present disclosure, a method for determining a quasi-co-location hypothesis is proposed, the method comprising: sending first indication information, the first indication information being used to indicate at least one set of indicated transmission configuration indication states indicated TCI state, wherein the at least one set of indicated transmission configuration indication states is used by the terminal to determine a first quasi-co-location QCL hypothesis, the first QCL hypothesis being a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

[0009] According to the third aspect of an embodiment of the present disclosure, a method for determining a quasi-co-location hypothesis is proposed, the method comprising: a network device sends first indication information, the first indication information being used to indicate at least one set of indicated transmission configuration indication states indicated TCI state; a terminal determines a first quasi-co-location QCL hypothesis based on the at least one set of indicated transmission configuration indication states, the first QCL hypothesis being a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; wherein a time domain interval between the AP CSI-RS and a first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS is in the same symbol as other downlink signals; and the control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

[0010] According to the fourth aspect of an embodiment of the present disclosure, a terminal is proposed, including: a processing module for determining a first quasi-co-site QCL hypothesis, where the first QCL hypothesis is a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

[0011] According to the fifth aspect of an embodiment of the present disclosure, a network device is proposed, including: a transceiver module for sending first indication information, the first indication information being used to indicate at least one set of indicated transmission configuration indication states indicated TCI state, wherein the at least one set of indicated TCI states is used by a terminal to determine a first quasi-co-site QCL hypothesis, the first QCL hypothesis being a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS is in the same symbol as other downlink signals; and the control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

[0012] According to a sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the processor is configured to execute the quasi co-location hypothesis determination method of the first aspect.

[0013] According to a seventh aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; wherein the processor is configured to execute the quasi co-location hypothesis determination method of the second aspect.

[0014] According to an eighth aspect of an embodiment of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the quasi co-location hypothesis determination method of the first aspect, and the network device is configured to implement the quasi co-location hypothesis determination method of the second aspect.

[0015] According to the ninth aspect of the embodiment of the present disclosure, a storage medium is provided, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the quasi-co-location hypothesis determination method of any one of the first aspect and the second aspect.

[0016] Through the embodiments of the present disclosure, the configuration and determination method of the TCI state corresponding to the aperiodic reference signal resource can be determined, thereby improving the transmission performance of multiple transmission receiving nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0018] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0019] FIG2 is an interactive schematic diagram illustrating a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure.

[0020] FIG3A is a flow chart illustrating a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure.

[0021] FIG3B is a flow chart illustrating a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure.

[0022] FIG3C is a flow chart illustrating a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure.

[0023] FIG4 is a flow chart illustrating a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure.

[0024] FIG5 is an interactive schematic diagram illustrating a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure.

[0025] FIG6A is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure.

[0026] FIG6B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.

[0027] FIG7A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0028] FIG7B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The embodiments of the present disclosure provide a method, terminal, network device, and system for determining a quasi-co-location hypothesis.

[0030] In a first aspect, an embodiment of the present disclosure proposes a method for determining a quasi-co-location hypothesis, the method including: a terminal determines a first quasi-co-location QCL hypothesis, the first QCL hypothesis being a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein, the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0031] In the above embodiment, the terminal determines the first QCL hypothesis, thereby clarifying that when there are multiple TCI indications on the PDSCH, or when there are two overlapping PDSCHs using different TCI states, the terminal can determine the TCIstate corresponding to the AP CSI-RS, thereby improving the transmission performance of multiple transmission receiving nodes.

[0032] In combination with some embodiments of the first aspect, in some embodiments, the first QCL assumption is the same as the second QCL assumption, the second QCL assumption is a QCL assumption for other downlink signals, and.

[0033] In the above embodiment, it is clarified that the first QCL assumption is the same as the QCL assumption of other downlink signals, and there is no need to perform independent design for the first QCL assumption, which reduces resource overhead and can determine the TCIstate corresponding to the AP CSI-RS, thereby improving the transmission performance of multiple transmission receiving nodes.

[0034] In combination with some embodiments of the first aspect, in some embodiments, the first QCL assumption corresponds to a first indicated transmission configuration indication state of two indicated transmission configuration indication states.

[0035] In the above embodiment, the correspondence between the first QCL assumption and the indicated TCI state is defined, thereby determining the TCIstate used corresponding to the AP CSI-RS, thereby improving the transmission performance of the multi-transmission receiving node.

[0036] In combination with some embodiments of the first aspect, in some embodiments, based on the radio resource control RRC configuration, the transmission configuration indication state TCI state corresponding to the first QCL assumption is determined; wherein, the transmission configuration indication state corresponding to the first QCL assumption includes any one of the following: the first indicated transmission configuration indication state of the two indicated transmission configuration indication states; the second indicated transmission configuration indication state of the two indicated transmission configuration indication states.

[0037] In the above embodiment, the correspondence between the first QCL assumption and the indicated TCI state is defined, thereby determining the TCIstate used corresponding to the AP CSI-RS, thereby improving the transmission performance of the multi-transmission receiving node.

[0038] With reference to some embodiments of the first aspect, in some embodiments, the indicated transmission configuration indication state includes: an indicated joint transmission configuration indication state, or an indicated downlink transmission configuration indication state, or an indicated DL TCI state.

[0039] In the above embodiment, various forms of the indicated TCI state corresponding to the first QCL assumption are clarified to correspond to various communication scenarios.

[0040] In combination with some embodiments of the first aspect, in some embodiments, the AP CSI-RS is configured as any one of the following: follow unified TCI state; do not follow unified TCI state.

[0041] In combination with some embodiments of the first aspect, in some embodiments, other downlink signals include at least one of the following: a physical downlink shared channel PDSCH scheduled by the second PDCCH; an AP CSI-RS scheduled by the third PDCCH; a periodic CSI-RS; a semi-persistent CSI-RS; wherein the time domain interval between the PDSCH and the second PDCCH is greater than or equal to the second time threshold; the time domain interval between the AP CSI-RS scheduled by the third PDCCH and the third PDCCH is greater than the first time threshold; the control resource set pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource set pool index.

[0042] In the above embodiment, based on this, the AP CSI-RS can be limited to overlap with other downlink signals corresponding to the same control resource pool index, and will not be triggered across control resource pool indexes, thereby avoiding communication system abnormalities caused by overlap across control resource pools.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the TCI state of the AP CSI-RS is not configured to follow the unified TCI state.

[0044] In the above embodiment, the configuration content of the TCI state of the AP CSI-RS is clarified, so that the terminal can determine the corresponding TCI state when determining the first QCL assumption.

[0045] In combination with some embodiments of the first aspect, in some embodiments, the RRC configuration includes any one of the following: RRC configures the AP CSI-RS to follow the first indicated transmission configuration indication state; RRC configures the AP CSI-RS to follow the second indicated transmission configuration indication state.

[0046] In the above embodiment, the configuration content of the TCI state of the AP CSI-RS is clarified, so that the terminal can determine the corresponding TCI state when determining the first QCL assumption.

[0047] In combination with some embodiments of the first aspect, in some embodiments, other downlink signals include: a first PDSCH and a second PDSCH; the first PDSCH and the second PDSCH satisfy at least one of the following: the time domain interval between the first PDSCH and the fourth PDCCH is greater than or equal to the second time threshold, wherein the fourth PDCCH is the PDCCH that schedules the first PDSCH; the time domain interval between the second PDSCH and the fifth PDCCH is greater than or equal to the second time threshold, wherein the fifth PDCCH is the PDCCH that schedules the second PDSCH; the control resource set pool index of the control resource set corresponding to the fourth PDCCH is different from the control resource set pool index of the control resource set corresponding to the fifth PDCCH; the first PDSCH corresponds to the first indicated joint transmission configuration indication state or the first indicated downlink transmission configuration indication state; the second PDSCH corresponds to the second indicated joint transmission configuration indication state or the second indicated downlink transmission configuration indication state.

[0048] In combination with some embodiments of the first aspect, in some embodiments, two indicated transmission configuration indication states are determined based on the first indication information, and the first indication information satisfies at least one of the following: the first indication information includes a first media access control control unit MAC CE, and the first MAC CE is used to activate at least one set of indicated transmission configuration indication states; at least one set of indicated transmission configuration indication states corresponds to a code point in the transmission configuration indication state indication field of the downlink control information DCI; or the first indication information includes a second MAC CE and a first DCI, wherein the second MAC CE is used to indicate at least one set of indicated transmission configuration indication states corresponding to each code point in multiple code points of the DCI transmission configuration indication state indication field, and the transmission configuration indication state indication field of the first DCI is used to indicate one code point in multiple code points, wherein a set of indicated transmission configuration indication states includes an indicated joint transmission configuration indication state, or a set of indicated transmission configuration indication states includes an indicated downlink transmission configuration indication state and / or an indicated uplink transmission configuration indication state.

[0049] In the above embodiment, the method for determining the indicated TCI state is clarified. The terminal can determine the two indicated TCI states to be used from the multiple sets of indicated TCI states indicated by the first indication information, thereby determining the first QCL hypothesis.

[0050] In combination with some embodiments of the first aspect, in some embodiments, the AP CSI-RS is a CSI-RS for CSI measurement or a CSI-RS for beam management.

[0051] In the second aspect, an embodiment of the present disclosure provides a method for determining a quasi-co-location hypothesis, the method comprising: sending first indication information, the first indication information being used to indicate at least one set of indicated transmission configuration indication states indicated TCI state, wherein the at least one set of transmission configuration indication states is used by the terminal to determine a first quasi-co-location QCL hypothesis, the first QCL hypothesis being a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0052] In combination with some embodiments of the second aspect, in some embodiments, the first QCL assumption is the same as the second QCL assumption, and the second QCL assumption is a QCL assumption for other downlink signals.

[0053] In combination with some embodiments of the second aspect, in some embodiments, the first QCL assumption corresponds to the first transmission configuration indication state of the two indicated transmission configuration indication states.

[0054] In combination with some embodiments of the second aspect, in some embodiments, wireless resource control RRC configuration signaling is sent to indicate the transmission configuration indication state TCI state corresponding to the first QCL assumption; wherein the transmission configuration indication state corresponding to the first QCL assumption includes any one of the following: the first indicated transmission configuration indication state of the two indicated transmission configuration indication states; the second indicated transmission configuration indication state of the two indicated transmission configuration indication states.

[0055] With reference to some embodiments of the second aspect, in some embodiments, the indicated transmission configuration indication state includes: an indicated joint transmission configuration indication state, or an indicated downlink transmission configuration indication state, or an indicated DL TCI state.

[0056] In combination with some embodiments of the second aspect, in some embodiments, radio resource control RRC configuration signaling is sent to instruct the AP CSI-RS to follow the unified TCI state or not to follow the unified TCI state.

[0057] In combination with some embodiments of the second aspect, in some embodiments, other downlink signals include at least one of the following: a physical downlink shared channel PDSCH scheduled by the second PDCCH; an AP CSI-RS scheduled by the third PDCCH; a periodic CSI-RS; a semi-persistent CSI-RS; wherein the time domain interval between the PDSCH and the second PDCCH is greater than or equal to the second time threshold; the time domain interval between the AP CSI-RS scheduled by the third PDCCH and the third PDCCH is greater than the first time threshold; the control resource pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource pool index.

[0058] In combination with some embodiments of the second aspect, in some embodiments, radio resource control RRC configuration signaling is sent to indicate that the TCI state of the AP CSI-RS does not follow the unified TCI state.

[0059] In combination with some embodiments of the second aspect, in some embodiments, the RRC configuration includes any one of the following: RRC configuring the AP CSI-RS to follow the first indicated transmission configuration indication state; RRC configuring the AP CSI-RS to follow the second indicated transmission configuration indication state.

[0060] In combination with some embodiments of the second aspect, in some embodiments, other downlink signals include: a first PDSCH and a second PDSCH; the first PDSCH and the second PDSCH satisfy at least one of the following: the time domain interval between the first PDSCH and the fourth PDCCH is greater than or equal to the second time threshold, wherein the fourth PDCCH is the PDCCH that schedules the first PDSCH; the time domain interval between the second PDSCH and the fifth PDCCH is greater than or equal to the second time threshold, wherein the fifth PDCCH is the PDCCH that schedules the second PDSCH; the control resource set pool index of the control resource set corresponding to the fourth PDCCH is different from the control resource set pool index of the control resource set corresponding to the fifth PDCCH; the first PDSCH corresponds to the first indicated joint transmission configuration indication state or the first indicated downlink transmission configuration indication state; the second PDSCH corresponds to the second indicated joint transmission configuration indication state or the second indicated downlink transmission configuration indication state.

[0061] In combination with some embodiments of the second aspect, in some embodiments, the first indication information includes a first media access control control unit MAC CE, the first MAC CE being used to activate at least one set of indicated transmission configuration indication states; at least one set of indicated transmission configuration indication states corresponds to a code point in the TCI status indication field of the downlink control information DCI; or the first indication information includes a second MAC CE and a first DCI, wherein the second MAC CE is used to indicate at least one set of indicated transmission configuration indication states corresponding to each code point in the multiple code points of the DCI transmission configuration indication state indication field, and the TCI status indication field of the first DCI is used to indicate one code point in the multiple code points, wherein a set of indicated transmission configuration indication states includes an indicated uplink and downlink joint transmission configuration indication state, or a set of indicated transmission configuration indication states includes an indicated downlink transmission configuration indication state and / or an indicated uplink transmission configuration indication state.

[0062] In combination with some embodiments of the second aspect, in some embodiments, the AP CSI-RS is a CSI-RS for CSI measurement or a CSI-RS for beam management.

[0063] In a third aspect, an embodiment of the present disclosure proposes a method for determining a quasi-co-location hypothesis, the method comprising: a network device sends a first indication message, the first indication message being used to indicate at least one set of indicated transmission configuration indication states indicated TCI state; a terminal determines a first quasi-co-location QCL hypothesis based on at least one set of indicated transmission configuration indication states, the first QCL hypothesis being a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0064] In a fourth aspect, an embodiment of the present disclosure proposes a terminal, including: a terminal for determining a first quasi-co-site QCL hypothesis, the first QCL hypothesis being a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0065] In the fifth aspect, an embodiment of the present disclosure proposes a network device, including: a transceiver module for sending a first indication information, the first indication information is used to indicate at least one set of indicated transmission configuration indication states indicated TCI state, wherein the at least one set of indicated transmission configuration indication states is used by the terminal to determine a first quasi-co-site QCL hypothesis, and the first QCL hypothesis is a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0066] In a sixth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the processor is used to execute the quasi co-location hypothesis determination method of the first aspect.

[0067] In a seventh aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the processor is used to execute the quasi-co-location hypothesis determination method of the second aspect.

[0068] In an eighth aspect, an embodiment of the present disclosure proposes a communication system, comprising: a terminal and a network device, wherein the terminal is configured to implement the quasi-co-location hypothesis determination method of the first aspect, and the network device is configured to implement the quasi-co-location hypothesis determination method of the second aspect.

[0069] In a ninth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the quasi-co-location hypothesis determination method of any one of the first and second aspects.

[0070] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods.

[0071] The present disclosure provides a method, terminal, network device, and system for determining a quasi-co-location hypothesis. In some embodiments, the terms "quasi-co-location hypothesis determining method" and "information processing method" and "communication method" are interchangeable; the terms "quasi-co-location hypothesis determining device" and "information processing device" and "communication device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0072] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain 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 certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0073] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0074] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0075] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0076] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0077] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0078] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0079] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0080] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0081] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0082] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0083] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0084] In some embodiments, terms such as "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 less than", and "above" can be replaced with each other, and terms such as "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" can be replaced with each other.

[0085] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0086] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0087] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "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", "bandwidth part (BWP)" and the like may be used interchangeably.

[0088] In some embodiments, the terms "terminal", "terminal device", "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. can be used interchangeably.

[0089] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0090] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0091] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0092] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0093] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0094] FIG1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0095] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0096] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0097] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0098] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0099] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0100] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element 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), and a Next Generation Core (NGC).

[0101] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0102] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0103] The embodiments of the present disclosure 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), 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 (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (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 utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0104] In the New Radio (NR), especially when the communication frequency band is in the operating frequency range 2, beam-based transmission and reception are required to ensure coverage.

[0105] In some embodiments, based on the discussion in Rel-16, at least one of the following beams is independently indicated: Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), or reference signal, etc. The beam includes Transmission Configuration Indicator State (TCI state) or spatial relation info.

[0106] In some embodiments, the PDCCH and PUCCH use a Medium Access Control Element (MAC CE) to activate a beam.

[0107] In some embodiments, the PDSCH and the PUSCH indicate their respective beams based on downlink control information (DCI).

[0108] In some embodiments, the reference signal includes at least one of the following: a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a positioning reference signal (PRS), a tracking reference signal (TRS), etc.

[0109] In some embodiments, the CSI-RS includes at least one of the following: a CSI-RS for channel state information measurement, a CSI-RS for beam measurement, or a CSI-RS for path loss estimation.

[0110] In some embodiments, the SRS includes at least one of the following: an SRS for codebook-based channel state information measurement, an SRS for non-codebook-based channel state information measurement, an SRS for beam measurement, or an SRS for positioning measurement.

[0111] In some embodiments, based on the discussion in Rel-17, in order to reduce signaling overhead, it is expected to use a unified Transmission Configuration Indicator State (unified TCI State).

[0112] In some embodiments, the unified TCI state typically has the following indication forms, including: -A) separate uplink and downlink indications, such as downlink (DL) TCI state and uplink (UL) TCI state. -B) joint uplink and downlink TCI state.

[0113] For example, if a network device (e.g., a base station) indicates a DL TCI state for downlink, the TCI state can be used for at least one of the following: the PDSCH of the terminal, the PDCCH of the terminal (e.g., a terminal-specific PDCCH, UE dedicated PDCCH), or a portion of the CSI-RS (e.g., aperiodic CSI-RS).

[0114] Exemplarily, if a network device (eg, a base station) indicates a TCI state for uplink, the TCI state for uplink may be used for at least one of the following: a PUSCH of a terminal, a PUCCH of a terminal, or a portion of an SRS.

[0115] Exemplarily, if a network device (eg, a base station) indicates a joint uplink and downlink TCI state, the joint uplink and downlink TCI state may be used for at least one of the following: an uplink channel, a downlink channel, an uplink reference signal, or a downlink reference signal.

[0116] In some embodiments, based on the discussion in Rel-18, in a unified TCI state in a multi-transmission reception point (M-TRP) scenario, for an aperiodic channel state information reference signal (aperiodic CSI-RS, AP CSI-RS), the following two configuration methods may exist: -A) follow the unified TCI state (follow unified Transmission Configuration Indicator State, unified TCI State, follow unified TCI State). -B) do not follow the unified TCI state. For method -B), if a corresponding TCI state needs to be configured for it, that is, if the unified TCI state is not followed, a TCI state different from the unified TCI state needs to be configured. The unified TCI state includes at least one of an indicated joint TCI state, an indicated DL TCI state, and an indicated UL TCI state.

[0117] In some embodiments, there is a time interval between the PDCCH and the AP CSI-RS. If the time interval is too small, for example, less than or equal to a first time threshold, the terminal may be unable to decode the DCI in a timely manner. As a result, the terminal cannot know the specific AP CSI-RS scheduled by the DCI, nor can it know the TCI state corresponding to the AP CSI-RS.

[0118] In some embodiments, the AP CSI-RS is received by 1 TCI state.

[0119] In some embodiments, if the AP CSI-RS overlaps with the PDSCH, the terminal will use the same TCI state as the PDSCH to receive the AP CSI-RS. It is understood that when the PDSCH has multiple TCI indications, or when two PDSCHs with different TCI states overlap, the terminal needs to determine which TCI state to use for receiving the AP CSI-RS.

[0120] Based on this, the embodiments of the present disclosure propose a method for determining the Quasi Co-location Assumption (QCL assumption).

[0121] FIG2 is an interactive diagram illustrating a method for determining a quasi-co-location assumption according to an embodiment of the present disclosure. As shown in FIG2 , an embodiment of the present disclosure relates to a method for determining a quasi-co-location assumption, and the method includes:

[0122] Step S2101 , the network device 102 sends first indication information to the terminal 101 .

[0123] In some embodiments, the terminal 101 receives first indication information.

[0124] In some embodiments, the terminal 101 receives first indication information from the network device 102 .

[0125] In some embodiments, the first indication information is used to indicate at least one set of indicated transmission configuration indication states TCI state,

[0126] Among them, at least one set of indicated TCI states is used to determine a first quasi-co-site QCL hypothesis, where the first QCL hypothesis is the QCL hypothesis of the non-periodic channel state information reference signal AP CSI-RS; the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to the first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0127] In some embodiments, "indicated transmission configuration indication state" and "indicated TCI state" can be used interchangeably.

[0128] In some embodiments, the terms "indicated joint transmission configuration indication state" and "indicated joint TCI state" may be used interchangeably.

[0129] In some embodiments, “indicated downlink transmission configuration indication state” and “indicated DL TCI state” and “indicated downlink TCI state” can be used interchangeably.

[0130] In some embodiments, “indicated uplink transmission configuration indication state”, “indicated UL TCI state” and “indicated uplink TCI state” may be interchangeable.

[0131] In some embodiments, “unified transmission configuration indication state” and “unified TCI state” can be used interchangeably.

[0132] In some embodiments, "TCI state", "TCI status", and "transmission configuration indication state" can be used interchangeably.

[0133] In some embodiments, the first indication information includes at least one of the following:

[0134] Media Access Control Unit MAC CE, or Downlink Control Information DCI.

[0135] In some embodiments, at least one set of indicated TCI states is used to determine a first quasi co-location (QCL) hypothesis.

[0136] In some embodiments, “QCL ​​assumption” and “QCL ​​assumption” can be used interchangeably.

[0137] In some embodiments, the first QCL hypothesis is a QCL hypothesis of an aperiodic channel state information reference signal (AP CSI-RS).

[0138] In some embodiments, the "QCL assumption" of a certain signal or channel may be indicated by a TCI state. A user equipment or a network device may obtain the QCL assumption based on the TCI state.

[0139] In some embodiments, a time domain interval between the AP CSI-RS and a first PDCCH is less than or equal to a first time threshold, where the first PDCCH is a PDCCH that schedules the AP CSI-RS.

[0140] In some embodiments, the first time threshold may be determined based on beam switch timing.

[0141] In some embodiments, the control resource set is configured at the terminal 101 .

[0142] In some embodiments, the terminal 101 is further configured with other control resource sets, where the other control resource sets correspond to the second control resource set pool index.

[0143] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0144] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0145] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0146] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0147] In some embodiments, the terms "search space", "search space set", "search space configuration", "search space set configuration", "control resource set (CORESET)", "CORESET configuration" and the like may be used interchangeably.

[0148] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like can be used interchangeably.

[0149] In step S2102, the terminal 101 determines two indicated TCI states.

[0150] In some embodiments, the terminal 101 determines two indicated TCI states based on the first indication information.

[0151] In some embodiments, the first indication information indicates at least one set of indicated TCI states.

[0152] In some embodiments, the terminal 101 determines two indicated TCI states based on at least one set of indicated TCI states indicated by the first indication information.

[0153] In some embodiments, a set of indicated TCI states includes any one of the following: an indicated joint TCI state; or an indicated downlink TCI state (indicated DL TCI state), and / or an indicated uplink TCI state (indicated UL TCI state).

[0154] In some embodiments, the terminal 101 determines at least one set of indicated TCI states based on the first indication information, including at least one of the following: -A) the terminal 101 determines at least one set of indicated TCI states based on a single first indication information. -B) the terminal 101 determines at least one set of indicated TCI states based on multiple first indication information.

[0155] For example, for -A), for example, the first indication information for the first time indicates two sets of indicated TCI states. Then before the network device 102 sends the first indication information for the second time, the terminal 101 determines two sets of indicated TCI states based on the first indication information for the first time. That is, it can be understood that the terminal 101 determines two sets of indicated TCI states based on the two sets of indicated TCI states indicated by the first indication information for the first time.

[0156] For example, with respect to -B), for example, the first indication information for the first time indicates two sets of indicated TCI states, and the second first indication information for the second time indicates one or two sets of indicated TCI states. The indicated one or two sets of indicated TCI states may, for example, be updates of one or two of the two sets of indicated TCI states indicated by the first first indication information. Therefore, before the network device 102 sends the third first indication information, the at least one set of indicated TCI states determined by the terminal 101 based on the first indication information may include at least one of the following:

[0157] The two sets of indicated TCI states indicated by the second first indication information;

[0158] The set of indicated TCI states indicated by the second first indication information, and the set of indicated TCI states in the two sets of indicated TCI states indicated by the first first indication information that is not updated by the second first indication information. In some embodiments, the terminal determines two indicated TCI states, including the terminal determining two indicated joint TCI states, or the terminal determining two indicated DL TCI states.

[0159] In some embodiments, the first indication information satisfies at least one of the following:

[0160] -a) The first indication information includes a first media access control element MAC CE, and the first MAC CE is used to activate at least one set of indicated TCI states; wherein the at least one set of indicated TCI states corresponds to a code point in the TCI state indication field (transmission configuration indication field) of the downlink control information DCI.

[0161] -b) The first indication information includes a second MAC CE and a first DCI, wherein the second MAC CE is used to indicate at least one set of indicated TCI states corresponding to each code point in a plurality of code points in a TCI state indication field of the DCI, and the TCI state indication field of the first DCI is used to indicate one code point in the plurality of code points, wherein a set of indicated TCI states includes an indicated joint TCI state, or a set of indicated TCI states includes an indicated downlink TCI state and / or an indicated uplink TCI state.

[0162] In some embodiments, when the first indication information satisfies -b), and after receiving the second MAC CE but before receiving the first DCI, the terminal 101 determines two indicated TCI states based on the first indication information. This can be achieved in the following manner: the terminal 101 determines the two indicated TCI states based on the smallest code point among multiple code points corresponding to multiple sets of indicated TCI states. For example, if the smallest code point among the multiple code points indicates two indicated TCI states, the two indicated TCI states indicated by the smallest code point among the multiple code points are used as the two indicated TCI states determined based on the first indication information.

[0163] In some embodiments, the terminal 101 determines at least one set of indicated TCI states based on the first indication information in a manner -A), where the first indication information satisfies -a) and / or -b).

[0164] In some embodiments, the terminal 101 determines at least one set of indicated TCI states based on the first indication information in a manner of -B), where the first indication information satisfies -a) and / or -b).

[0165] In some embodiments, the terminal 101 determines two indicated TCI states based on at least one set of indicated TCI states indicated by the first indication information, including at least one of the following: -C) the terminal 101 determines at least one set of indicated TCI states based on a single first indication information, and determines two indicated TCI states based on the determined at least one set of indicated TCI states. -D) the terminal 101 determines at least one set of indicated TCI states based on multiple first indication information, and determines two indicated TCI states based on the determined at least one set of indicated TCI states.

[0166] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0167] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0168] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0169] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0170] In step S2103 , the terminal 101 determines a first quasi co-location hypothesis based on two indicated TCI states.

[0171] In some embodiments, the first QCL assumption includes any one of the following:

[0172] -A) The first QCL assumption is the same as the second QCL assumption, where the second QCL assumption is the QCL assumption of other downlink signals.

[0173] -B) The first QCL assumption corresponds to the first indicated TCI state of the two indicated TCI states.

[0174] -C) Determine a TCI state corresponding to the first QCL hypothesis based on a Radio Resource Control (RRC) configuration.

[0175] In the case where the first QCL corresponds to -A), at least one of the following is included:

[0176] In some embodiments, the AP CSI-RS is configured as any of the following:

[0177] -a) Follow the unified TCI state. -b) Do not follow the unified TCI state.

[0178] In some embodiments, the AP CSI-RS being configured not to follow the unified TCI state may be understood as the AP CSI-RS being configured not to follow the unified TCI state.

[0179] It should be noted that, in the embodiments of the present disclosure, unless otherwise specified, "not following the unified TCI state" can be understood as the AP CSI-RS being configured not to follow the unified TCI state. Therefore, to avoid repetition, each description will not be given in detail.

[0180] In some embodiments, the unified TCI state is obtained based on DCI signaling indication.

[0181] In some embodiments, the unified TCI state is obtained based on MAC CE signaling indication.

[0182] It should be noted that, in the embodiments of the present disclosure, unless otherwise specified, the unified TCI state can be obtained based on DCI signaling or MAC CE signaling. Therefore, to avoid repetition, each of these will not be described in detail.

[0183] In some embodiments, for case a), the AP CSI-RS is configured as any of the following:

[0184] Follow the first of the two indicated joint TCI states;

[0185] Follow the second of the two indicated joint TCI states;

[0186] Follow the first of the two indicated DL TCI states;

[0187] Followed by the second of the two indicated DL TCI states.

[0188] In some embodiments, for case -a), the RRC may indicate the first or second of the indicated TCI states that the AP CSI-RS specifically follows.

[0189] Exemplarily, RRC indicates that the AP CSI-RS follows the first of two indicated joint TCI states, etc.

[0190] In some embodiments, for case -a), the first QCL information field (QCL-info) corresponding to the TCI state used to configure the AP CSI-RS and the second QCL information field corresponding to the TCI state used to configure the AP CSI-RS may not be given.

[0191] It is understandable that, since in case a), the AP CSI-RS is configured based on RRC indication, the terminal can determine the unified TCI state based on MAC CE or DCI, thereby determining the unified TCI state as the TCI state of the AP CSI-RS. Therefore, the first QCL information field (QCL-info) corresponding to the TCI state used to configure the AP CSI-RS and the second QCL information field corresponding to the TCI state used to configure the AP CSI-RS do not need to be provided.

[0192] In some embodiments, for case -b), the AP CSI-RS is configured as any of the following:

[0193] Does not follow the first of the two indicated joint TCI states;

[0194] Does not follow the second of the two indicated joint TCI states;

[0195] Does not follow the first of the two indicated DL TCI states;

[0196] Does not follow the second of the two indicated DL TCI states.

[0197] In some embodiments, for case -b), the RRC may indicate the first or second of the indicated TCI states that the AP CSI-RS specifically does not follow.

[0198] Exemplarily, the RRC indicates that the AP CSI-RS does not follow the first of the two indicated joint TCI states.

[0199] In some embodiments, for case -b), the first QCL information field (QCL-info) in the RRC corresponds to the TCI state used to configure the AP CSI-RS, or the second QCL information field corresponds to the TCI state used to configure the AP CSI-RS, for example, as indicated by the RRC.

[0200] In some embodiments, other downlink signals include at least one of the following: a physical downlink shared channel PDSCH scheduled by the second PDCCH; an AP CSI-RS scheduled by the third PDCCH; a periodic CSI-RS; a semi-persistent CSI-RS; wherein the time domain interval between the PDSCH and the second PDCCH is greater than or equal to the second time threshold; the time domain interval between the AP CSI-RS scheduled by the third PDCCH and the third PDCCH is greater than the first time threshold; the control resource set pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource set pool index.

[0201] In some embodiments, two indicated TCI states correspond one-to-one to two control resource pool indexes, where the first indicated TCI state corresponds to the indicated TCI state of the first control resource pool index, and the second indicated TCI state corresponds to the indicated TCI state of the second control resource pool index. The first control resource pool index is 0 and the second control resource pool index is 1; or the first control resource pool index is 1 and the second control resource pool index is 0.

[0202] In some embodiments, the second time threshold is determined based on a QCL duration (time duration for QCL).

[0203] In some embodiments, the control resource set pool index of the control resource set corresponding to the second PDCCH is the first control resource set pool index.

[0204] In some embodiments, the control resource set pool index of the control resource set corresponding to the third PDCCH is the first control resource set pool index.

[0205] It can be understood that when the control resource pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource pool index, it is determined that the AP CSI-RS can only overlap with other downlink signals corresponding to the same control resource pool index, that is, the AP CSI-RS cannot be triggered across the control resource pool index.

[0206] In some embodiments, different control resource set pool indexes correspond to different TRPs, and different TRPs may correspond to the same serving cell or different cells.

[0207] In some embodiments, different TRPs correspond to different cells, including: a part of the TRPs belong to the service cell, and another part of the TRPs belong to a cell different from the service cell.

[0208] In the case where the first QCL corresponds to -B), at least one of the following is included:

[0209] In some embodiments, the TCI state of the AP CSI-RS is not configured to follow the unified TCI state.

[0210] In some embodiments, the AP CSI-RS is configured as any of the following:

[0211] Does not follow the first of the two indicated joint TCI states;

[0212] Does not follow the second of the two indicated joint TCI states;

[0213] Does not follow the first of the two indicated DL TCI states;

[0214] Does not follow the second of the two indicated DL TCI states.

[0215] In some embodiments, the AP CSI-RS may be indicated via RRC to specifically not follow the first or second of the indicated TCI states.

[0216] Exemplarily, the RRC indicates that the AP CSI-RS does not follow the first of the two indicated joint TCI states.

[0217] In some embodiments, the first QCL information field (QCL-info) in the RRC corresponds to the TCI state used to configure the AP CSI-RS, or the second QCL information field corresponds to the TCI state used to configure the AP CSI-RS, for example, as indicated by the RRC.

[0218] In some embodiments, the other downlink signals include: a first PDSCH and a second PDSCH; the first PDSCH and the second PDSCH satisfy at least one of the following: a time domain interval between the first PDSCH and a fourth PDCCH is greater than or equal to a second time threshold, wherein the fourth PDCCH is a PDCCH that schedules the first PDSCH; a time domain interval between the second PDSCH and a fifth PDCCH is greater than or equal to the second time threshold, wherein the fifth PDCCH is a PDCCH that schedules the second PDSCH; a control resource set pool index of a control resource set corresponding to the fourth PDCCH is different from a control resource set pool index of a control resource set corresponding to the fifth PDCCH; the first PDSCH corresponds to a first indicated joint TCI state or a first indicated DL TCI state; and the second PDSCH corresponds to a second indicated joint TCI state or a second indicated DL TCI state.

[0219] In some embodiments, the AP CSI-RS and other downlink signals are in the same symbol, which may include: the AP CSI-RS and the first PDSCH and the second PDSCH are in the same symbol.

[0220] In some embodiments, the first PDSCH and the second PDSCH may be in the same symbol or in different symbols.

[0221] In some embodiments, other downlink signals satisfy the following conditions: the time domain interval between the first PDSCH and the fourth PDCCH is greater than or equal to the second time threshold, wherein the fourth PDCCH is the PDCCH that schedules the first PDSCH; and, the time domain interval between the second PDSCH and the fifth PDCCH is greater than or equal to the second time threshold, wherein the fifth PDCCH is the PDCCH that schedules the second PDSCH; and, the control resource set pool index of the control resource set corresponding to the fourth PDCCH is different from the control resource set pool index of the control resource set corresponding to the fifth PDCCH; and, the first PDSCH corresponds to the first indicated joint transmission configuration indication state or the first indicated downlink transmission configuration indication state indicated DL TCI state; and, the second PDSCH corresponds to the second indicated joint transmission configuration indication state or the second indicated downlink transmission configuration indication state.

[0222] Optionally, the control resource set pool index corresponding to the indicated TCI state includes at least one of the following:

[0223] The first indicated joint TCI state corresponds to the first control resource pool index or the first indicated DL TCI state corresponds to the first control resource pool index;

[0224] The second indicated joint TCI state corresponds to the second control resource pool index or the second indicated DL TCI state corresponds to the second control resource pool index;

[0225] The first indicated joint TCI state corresponds to the second control resource pool index or the first indicated DL TCI state corresponds to the second control resource pool index;

[0226] The second indicated joint TCI state corresponds to the first control resource pool index or the second indicated DL TCI state corresponds to the first control resource pool index.

[0227] Optionally, the control resource pool index corresponding to the TRP includes at least one of the following:

[0228] The first control resource pool index corresponds to the first TRP, and the second control resource pool index corresponds to the second TRP;

[0229] The first control resource pool index corresponds to the second TRP, and the second control resource pool index corresponds to the first TRP.

[0230] Optionally, the first PDSCH is sent by the first TRP and the second PDSCH is sent by the second TRP; or the first PDSCH is sent by the second TRP and the second PDSCH is sent by the first TRP.

[0231] In the case where the first QCL corresponds to -C), at least one of the following is included:

[0232] In some embodiments, the RRC configuration includes any of the following:

[0233] -a)RRC configures the AP CSI-RS to follow the first indicated TCI state.

[0234] -b)RRC configures the AP CSI-RS to follow the second indicated TCI state.

[0235] -c)RRC configures the AP CSI-RS to follow the first unified TCI state.

[0236] -d) RRC configures the AP CSI-RS to follow the second unified TCI state.

[0237] It is understandable that, when the indicated TCI state corresponding to the AP CSI-RS is configured based on RRC signaling, the AP CSI-RS decoding can be performed based on the indicated TCI state configured by RRC.

[0238] In some embodiments, for case -a), RRC configures the AP CSI-RS to be any of the following:

[0239] Follow the first of the two indicated joint TCI states;

[0240] Follows the first of the two indicated DL TCI states.

[0241] In some embodiments, for case -b), RRC configures the AP CSI-RS to be any of the following:

[0242] Follow the second of the two indicated joint TCI states;

[0243] Followed by the second of the two indicated DL TCI states.

[0244] In some embodiments, the first QCL information field (QCL-info) corresponding to the TCI state used to configure the AP CSI-RS and the second QCL information field corresponding to the TCI state used to configure the AP CSI-RS may not be given.

[0245] In some embodiments, the other downlink signals include: a first PDSCH and a second PDSCH; the first PDSCH and the second PDSCH satisfy at least one of the following: a time domain interval between the first PDSCH and a fourth PDCCH is greater than or equal to a second time threshold, wherein the fourth PDCCH is a PDCCH that schedules the first PDSCH; a time domain interval between the second PDSCH and a fifth PDCCH is greater than or equal to the second time threshold, wherein the fifth PDCCH is a PDCCH that schedules the second PDSCH; a control resource set pool index of a control resource set corresponding to the fourth PDCCH is different from a control resource set pool index of a control resource set corresponding to the fifth PDCCH; the first PDSCH corresponds to a first indicated joint TCI state or a first indicated DL TCI state; and the second PDSCH corresponds to a second indicated joint TCI state or a second indicated DL TCI state.

[0246] In some embodiments, the AP CSI-RS and other downlink signals are in the same symbol, which may include: the AP CSI-RS and the first PDSCH and the second PDSCH are in the same symbol.

[0247] In some embodiments, the first PDSCH and the second PDSCH may be in the same symbol or in different symbols.

[0248] In some embodiments, other downlink signals satisfy the following conditions: the time domain interval between the first PDSCH and the fourth PDCCH is greater than or equal to the second time threshold, wherein the fourth PDCCH is the PDCCH that schedules the first PDSCH; and, the time domain interval between the second PDSCH and the fifth PDCCH is greater than or equal to the second time threshold, wherein the fifth PDCCH is the PDCCH that schedules the second PDSCH; and, the control resource set pool index of the control resource set corresponding to the fourth PDCCH is different from the control resource set pool index of the control resource set corresponding to the fifth PDCCH; and, the first PDSCH corresponds to the first indicated joint transmission configuration indication state or the first indicated downlink transmission configuration indication state indicated DL TCI state; and, the second PDSCH corresponds to the second indicated joint transmission configuration indication state or the second indicated downlink transmission configuration indication state.

[0249] It is understandable that when the terminal receives the CSI-RS, it needs to use two indicated TCI states to receive two PDSCHs on the same symbol, so the terminal needs to first use two indicated TCI states to buffer the CSI-RS in the same symbol. After the terminal decodes the DCI that schedules the CSI-RS, it knows which CSI-RS the DCI schedules. For the CSI-RS that is configured by RRC not to follow the unified TCI state, the terminal knows that the CSI-RS is configured by RRC not to follow the unified TCI state. However, the terminal only uses two indicated TCI states to buffer the CSI-RS, so the terminal can only use the first or second of the two indicated TCI states to receive the CSI-RS. At this time, it is optional to determine that the CSI-RS is received using the first of the two indicated TCI states. For the CSI-RS configured by RRC to follow the unified TCI state, the terminal only learns that the CSI-RS is configured by RRC to follow the unified TCI state after decoding the DCI that schedules the CSI-RS. For example, the terminal is configured to follow the first indicated TCI state, but the terminal uses two indicated TCI states to buffer the CSI-RS, so the terminal uses the RRC configured follow the first indicated TCI state to receive the CSI-RS; or for example, the terminal is configured to follow the second indicated TCI state, but the terminal uses two indicated TCI states to buffer the CSI-RS, so the terminal uses the RRC configured follow the second indicated TCI state to receive the CSI-RS.

[0250] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2103. For example, step S2102 may be implemented as an independent embodiment, step S2103 may be implemented as an independent embodiment, and steps S2101+S2102+S210 may be implemented as independent embodiments, but are not limited thereto.

[0251] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0252] In some embodiments, steps S2101 and S2102 may be executed in an exchanged order or simultaneously, steps S2102 and S2103 may be executed in an exchanged order or simultaneously, and steps S2101 and S2103 may be executed in an exchanged order or simultaneously.

[0253] In some embodiments, steps S2101 and S2102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0254] In some embodiments, steps S2101 and S2103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0255] In some embodiments, steps S2102 and S2103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0256] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0257] In some embodiments, FIG3A is a flow chart of a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure. As shown in FIG3A , an embodiment of the present disclosure relates to a method for determining a quasi co-location hypothesis, and the method includes:

[0258] Step S3101: Obtain first indication information.

[0259] In some embodiments, the terminal 101 receives the first information sent by the network device 102, but is not limited thereto and may also receive the first information sent by other entities.

[0260] In some embodiments, terminal 101 obtains first information specified by a protocol.

[0261] In some embodiments, terminal 101 obtains the first information from upper layer(s).

[0262] In some embodiments, the terminal 101 performs processing to obtain the first information.

[0263] In some embodiments, step S3101 is omitted, and the terminal 101 autonomously implements the function indicated by the first information, or the above function is default or by default.

[0264] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0265] Step S3102: Determine two indicated TCI states.

[0266] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0267] Step S3103: Determine a first quasi co-location hypothesis based on the two indicated TCI states.

[0268] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0269] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3103. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, step S3103 can be implemented as an independent embodiment, steps S3101+S3102 can be implemented as an independent embodiment, steps S3101+S3103 can be implemented as an independent embodiment, steps S3101+S3103 can be implemented as an independent embodiment, and steps S3101+S3102+S3103 can be implemented as an independent embodiment, but are not limited thereto.

[0270] In some embodiments, steps S3102 and S3103 may be executed in an exchanged order or simultaneously, steps S3101 and S3103 may be executed in an exchanged order or simultaneously, and steps S3102 and S3103 may be executed in an exchanged order or simultaneously.

[0271] In some embodiments, steps S3101 and S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0272] In some embodiments, steps S3102 and S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0273] In some embodiments, FIG3B is a flow chart of a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure. As shown in FIG3B , an embodiment of the present disclosure relates to a method for determining a quasi co-location hypothesis, and the method includes:

[0274] Step S3201: Determine two indicated TCI states.

[0275] The optional implementation of step S3201 can be found in step S2101 and step S2102 of Figure 2, the optional implementation of step S3101 and step S3102 of Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0276] Step S3202: Determine a first quasi co-location hypothesis based on two indicated TCI states.

[0277] The optional implementation of step S3202 can refer to the optional implementation of step S2103 in Figure 2, the optional implementation of step S3103 in Figure 3A, and other related parts of the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0278] The communication method involved in the embodiment of the present disclosure may include at least one of steps S3201 and S3202. For example, step S3201 may be implemented as an independent embodiment, and step S3202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0279] In some embodiments, step S3201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0280] In the embodiment of the present disclosure, step S3201 can be combined with steps S3102-S3103 of Figure 3A, and step S3202 can be combined with steps S3101, S3102, and S3103 of Figure 3A.

[0281] FIG3C is a flow chart of a method for determining a quasi-co-location hypothesis according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a method for determining a quasi-co-location hypothesis, and the method includes:

[0282] Step S3301: The terminal determines a first quasi co-location hypothesis.

[0283] The optional implementation of step S3301 can be found in steps S2101, S2102, and S2103 of Figure 2, the optional implementation of steps S3101, S3102, and S3103 of Figure 3A, the optional implementation of steps S3201 and S3202 of Figure 3B, and other related parts of the embodiments involved in Figures 2, 3A, and 3B, which will not be repeated here.

[0284] In some embodiments, the first QCL assumption is a QCL assumption of a non-periodic channel state information reference signal AP CSI-RS, wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0285] In some embodiments, the first QCL assumption is the same as the second QCL assumption, and the second QCL assumption is the QCL assumption of the other downlink signal.

[0286] In some embodiments, the first QCL assumption corresponds to a first indicated TCI state of two indicated TCI states.

[0287] In some embodiments, based on the radio resource control RRC configuration, the TCI state corresponding to the first QCL assumption is determined; wherein the TCI state corresponding to the first QCL assumption includes any one of the following: corresponding to the first indicated TCI state of the two indicated TCI states; corresponding to the second indicated TCI state of the two indicated TCI states.

[0288] In some embodiments, the indicated TCI state includes an indicated joint TCI state or an indicated downlink TCI state.

[0289] In some embodiments, the AP CSI-RS is configured as any one of the following: follow unified TCI state; do not follow unified TCI state.

[0290] In some embodiments, other downlink signals include at least one of the following: a physical downlink shared channel PDSCH scheduled by the second PDCCH; an AP CSI-RS scheduled by the third PDCCH; a periodic CSI-RS; a semi-persistent CSI-RS; wherein the time domain interval between the PDSCH and the second PDCCH is greater than or equal to the second time threshold; the time domain interval between the AP CSI-RS scheduled by the third PDCCH and the third PDCCH is greater than the first time threshold; the control resource set pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource set pool index.

[0291] In some embodiments, the TCI state of the AP CSI-RS is not configured to follow the unified TCI state.

[0292] In some embodiments, the RRC configuration includes any one of the following: RRC configuring the AP CSI-RS to follow the first indicated TCI state; RRC configuring the AP CSI-RS to follow the second indicated TCI state.

[0293] In some embodiments, the other downlink signals include: a first PDSCH and a second PDSCH; the first PDSCH and the second PDSCH satisfy at least one of the following: a time domain interval between the first PDSCH and a fourth PDCCH is greater than or equal to a second time threshold, wherein the fourth PDCCH is a PDCCH that schedules the first PDSCH; a time domain interval between the second PDSCH and a fifth PDCCH is greater than or equal to the second time threshold, wherein the fifth PDCCH is a PDCCH that schedules the second PDSCH; a control resource set pool index of a control resource set corresponding to the fourth PDCCH is different from a control resource set pool index of a control resource set corresponding to the fifth PDCCH; the first PDSCH corresponds to a first indicated joint TCI state or a first indicated DL TCI state; and the second PDSCH corresponds to a second indicated joint TCI state or a second indicated DL TCI state.

[0294] In some embodiments, two indicated TCI states are determined based on the first indication information, and the first indication information satisfies at least one of the following: the first indication information includes a first media access control control unit MAC CE, and the first MAC CE is used to activate at least one set of indicated TCI states; at least one set of indicated TCI states corresponds to a code point in the TCI state indication field of the downlink control information DCI; or the first indication information includes a second MAC CE and a first DCI, wherein the second MAC CE is used to indicate at least one set of indicated TCI states corresponding to each of multiple code points in the DCI TCI state indication field, and the TCI state indication field of the first DCI is used to indicate one code point among multiple code points, wherein a set of indicated TCI states includes an indicated joint TCI state, or a set of indicated TCI states includes an indicated downlink TCI state and / or an indicated uplink TCI state.

[0295] In some embodiments, the AP CSI-RS is a CSI-RS for CSI measurement or a CSI-RS for beam management.

[0296] In the embodiment of the present disclosure, step S3301 may be combined with steps S3102-S3103 of FIG. 3A , and step S3301 may be combined with step S3202 of FIG. 3B .

[0297] FIG4 is a flow chart of a method for determining a quasi-co-location hypothesis according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a communication method, the method comprising:

[0298] Step S4101: Send first indication information.

[0299] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2, step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0300] In some embodiments, the first indication information is used to indicate at least one set of indicated transmission configuration indication states indicated TCI state,

[0301] Among them, the at least one set of indicated TCI state is used by the terminal to determine the first quasi-co-site QCL hypothesis, and the first QCL hypothesis is the QCL hypothesis of the non-periodic channel state information reference signal AP CSI-RS; wherein, the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to the first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0302] In some embodiments, the first QCL assumption is the same as the second QCL assumption, and the second QCL assumption is the QCL assumption of the other downlink signal.

[0303] In some embodiments, the first QCL assumption corresponds to a first indicated TCI state of two indicated TCI states.

[0304] In some embodiments, radio resource control RRC configuration signaling is sent to indicate the TCI state corresponding to the first QCL assumption; wherein the TCI state corresponding to the first QCL assumption includes any one of the following: the first indicated TCI state of the two indicated TCI states; the second indicated TCI state of the two indicated TCI states.

[0305] In some embodiments, the indicated TCI state includes an indicated joint TCI state or an indicated downlink TCI state.

[0306] In some embodiments, radio resource control (RRC) configuration signaling is sent to instruct the AP CSI-RS to follow a unified TCI state or not to follow a unified TCI state.

[0307] In some embodiments, other downlink signals include at least one of the following: a physical downlink shared channel PDSCH scheduled by the second PDCCH; an AP CSI-RS scheduled by the third PDCCH; a periodic CSI-RS; a semi-persistent CSI-RS; wherein the time domain interval between the PDSCH and the second PDCCH is greater than or equal to the second time threshold; the time domain interval between the AP CSI-RS scheduled by the third PDCCH and the third PDCCH is greater than the first time threshold; the control resource set pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource set pool index.

[0308] In some embodiments, radio resource control (RRC) configuration signaling is sent to indicate that the TCI state of the AP CSI-RS does not follow the unified TCI state.

[0309] In some embodiments, the RRC configuration includes any one of the following: RRC configuring the AP CSI-RS to follow a first indicated TCI state; RRC configuring the AP CSI-RS to follow a second indicated TCI state.

[0310] In some embodiments, the other downlink signals include: a first PDSCH and a second PDSCH; the first PDSCH and the second PDSCH satisfy at least one of the following: a time domain interval between the first PDSCH and a fourth PDCCH is greater than or equal to a second time threshold, wherein the fourth PDCCH is a PDCCH that schedules the first PDSCH; a time domain interval between the second PDSCH and a fifth PDCCH is greater than or equal to a second time threshold, wherein the fifth PDCCH is a PDCCH that schedules the second PDSCH; a control resource set pool index of a control resource set corresponding to the fourth PDCCH is different from a control resource set pool index of a control resource set corresponding to the fifth PDCCH; the first PDSCH corresponds to a downlink in which a first indicated joint TCI state or a first indicated DL TCI state is indicated; and the second PDSCH corresponds to a second indicated joint TCI state or a second indicated DL TCI state.

[0311] In some embodiments, the first indication information satisfies at least one of the following: the first indication information includes a first media access control control unit MAC CE, the first MAC CE is used to activate at least one set of indicated TCI state; at least one set of indicated TCI state corresponds to a code point in the TCI state indication field of the downlink control information DCI; or the first indication information includes a second MAC CE and a first DCI, wherein the second MAC CE is used to indicate at least one set of indicated TCI state corresponding to each of multiple code points in the DCI TCI state indication field, and the TCI state indication field of the first DCI is used to indicate one code point in multiple code points, wherein a set of indicated TCI state includes an indicated uplink and downlink combined TCI state, or a set of indicated TCI state includes an indicated downlink TCI state and / or an indicated uplink TCI state.

[0312] In some embodiments, the AP CSI-RS is a CSI-RS for CSI measurement or a CSI-RS for beam management.

[0313] FIG5 is an interactive diagram illustrating a method for determining a quasi co-location hypothesis according to an embodiment of the present disclosure. As shown in FIG5 , an embodiment of the present disclosure relates to a method for determining a quasi co-location hypothesis, and the method includes:

[0314] Step S5101: The network device 102 sends first indication information.

[0315] In some embodiments, the first indication information is used to indicate at least one set of indicated transmission configuration indication states.

[0316] Optional implementations of step S5101 may refer to step S2101 in FIG. 2 , step S3101 in FIG. 3A , and other related parts in the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

[0317] In step S5102, the terminal 101 determines a first quasi co-location QCL hypothesis based on at least one set of indicated TCI states.

[0318] In some embodiments, the first QCL hypothesis is a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS;

[0319] Among them, the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to the first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index.

[0320] The optional implementation methods of step S5102 can be found in step S2102 of Figure 2, step S2103 of Figure 3A, step S3102 of step S3103 of Figure 3B, and the optional implementation methods of step S3301 of Figure 3C, as well as other related parts in the embodiments involved in Figures 2, 3A, 3B, and 3C, which will not be repeated here.

[0321] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0322] In an embodiment of the present disclosure, a communication method is also provided for determining a unified TCI state when an aperiodic channel status signal resource (aperiodic Channel Status Information-Reference Signal resource, aperiodic CSI-RS resource) with a first threshold overlaps with a physical downlink shared channel (PDSCH) at an interval between scheduled PDCCHs and a unified transmission configuration indication state (unified Transmission Configuration Indicator state, unified TCI state) indicated by multiple transmission receiving nodes (Transmission Reception Point, TRP) of multiple downlink control information (Muti Downlink Control Information, Muti-DCI) so as to improve the flexibility of periodic CSI-RS resource transmission based on the unified TCI state.

[0323] In some embodiments, the terminal determines that the QCL assumption of the aperiodic CSI-RS resource is the first QCL assumption, wherein the interval between the AP CSI-RS and the PDCCH is less than a threshold value (such as beamSwitchTiming), and the AP CSI-RS overlaps with other DL signals, and the terminal's multiple CORESETs (first control resource sets) correspond to different CORESETPoolIndex (first control resource set pool index).

[0324] In some embodiments, the first QCL assumption is the same QCL assumption as other DL signals.

[0325] Optionally, the AP CSI-RS may be configured to follow unified TCI-state. For example, RRC configures the AP CSI-RS to follow any one of the following: the first indicated joint; the first DL TCI state; the second indicated joint or the second DL TCI state.

[0326] In some embodiments, “DL TCI state”, “indicated DL TCI state”, and “indicated downlink TCI state” may be used interchangeably.

[0327] Optionally, when the AP CSI-RS is configured to follow unified TCI-state, the TCI state corresponding to the qcl-info and qcl-info2 fields of the AP CSI-RS may not be given.

[0328] Optionally, the AP CSI-RS may not be configured to follow unified TCI-state, for example, RRC does not configure the AP CSI-RS to follow any of the following: the first indicated joint; the first DL TCI state; the second indicated joint or the second DL TCI state.

[0329] Optionally, when the AP CSI-RS is not configured to follow unified TCI-state, the TCI state corresponding to the qcl-info, qcl-info2 domain.

[0330] In some embodiments, other downlink signals (Other DL signals) are PDSCH scheduled by PDCCH (and separated from its own PDCCH by more than timeDurationForQCL), or AP CSI-RS scheduled by PDCCH (and separated from its own PDCCH by more than beam switch timing).

[0331] Optionally, Other DL signal is that the CORESET Pool Index of the CORESET corresponding to the PDSCH scheduled by the PDCCH is the same as the first control resource set pool index.

[0332] It can be understood that, based on this, the AP CSI-RS is restricted to overlapping with other DL signals corresponding to the same CORESET Pool Index, that is, the AP CSI-RS cannot be triggered across the CORESET Pool Index. Different CORESET Pool Indexes actually correspond to different TRPs. Different TRPs can be the same cell (the same serving cell) or different cells: one is the serving cell and the other is the non-serving cell.

[0333] In some embodiments, the other SL signal is a periodic CSI-RS or a semi-persistent CSI-RS.

[0334] In some embodiments, the first QCL is assumed to be the first indicated joint or the first DL TCI state.

[0335] Optionally, the AP CSI-RS may not be configured to follow unified TCI-state (for example, the TCI state corresponding to the qcl-info and qcl-info2 fields of the AP CSI-RS configured by RRC).

[0336] Optionally, the Other DL signal includes two PDSCHs, and the two PDSCHs satisfy at least one of the following:

[0337] The interval between two PDSCHs and their own PDCCH is greater than or equal to the threshold (time duration for QCL);

[0338] The CORESETs of the PDCCHs of the two PDSCHs correspond to different CORESETPoolIndex values;

[0339] One PDSCH uses the first indicated joint or the first DL TCI state, and the other DSCH uses the second indicated joint or the second DL TCI state.

[0340] In some embodiments, the first QCL assumption is a first indicated joint, or a first DL TCI state, or a second indicated joint, or a second DL TCI state based on an RRC configuration.

[0341] Optionally, the AP CSI-RS may be configured to follow a unified TCI-state (eg, RRC configures the AP CSI-RS to follow the first indicated joint, or the first DL TCI state, or the second indicated joint, or the second DL TCI state).

[0342] Optionally, when the AP CSI-RS can be configured to follow unified TCI-state, the TCI state corresponding to the qcl-info and qcl-info2 fields of the AP CSI-RS may not be given.

[0343] Optionally, the Other DL signal includes two PDSCHs, and the two PDSCHs satisfy at least one of the following:

[0344] The interval between two PDSCHs and their own PDCCH is greater than or equal to the threshold (time duration for QCL);

[0345] The CORESETs of the PDCCHs of the two PDSCHs correspond to different CORESETPoolIndex values;

[0346] One PDSCH uses the first indicated joint or the first DL TCI state, and the other DSCH uses the second indicated joint or the second DL TCI state.

[0347] It is understandable that, since the terminal already needs to use two indicated joint / DL TCI states to buffer the received data or signals on the resource, after DCI decoding is completed, it is known which AP CSI-RS corresponds to the AP CSI-RS scheduled by the DCI. If the indicated joint / DL TCI state used by the AP CSI-RS is configured based on RRC signaling, the AP CSI-RS can be decoded based on the indicated joint / DL TCI state configured by RRC.

[0348] In some embodiments, wherein

[0349] The first indicated joint or the first DL TCI state is the first of the two indicated joints or the two DL TCI states determined by the terminal;

[0350] The second indicated joint or the second DL TCI state is the second of the two indicated joints or the two DL TCI states determined by the terminal;

[0351] The two indicated joints or two DL TCI states may be indicated by a MAC CE and / or a DCI, wherein the MAC CE indicates one or two indicated joints or one or two DL TCI states corresponding to at least one codepoint corresponding to a DCI indication field, and the DCI indicates one codepoint among multiple codepoints.

[0352] In some embodiments, the MAC CE further indicates whether each indicated joint or each DL TCI state corresponds to the first or the second.

[0353] In some embodiments, the terminal determines two indicated joints or two DL TCI states.

[0354] In some embodiments, the terminal determines two indicated joints or two DL TCI states based on the following:

[0355] First indication information is received, and two indicated joints or two DL TCI states are determined based on the first indication information.

[0356] In some embodiments, the first indication information includes: MAC CE and / or DCI, and the first indication information indicates N sets of TCI states, where N is an integer greater than or equal to 1.

[0357] In some embodiments, the N sets of TCI states can be determined based on multiple first indications. For example, if the first indication indicates two states, then before the second indication arrives, the N sets of TCI states will be the two states indicated by the first indication. If the second indication indicates only one state, such as updating the first state in the first indication, then before the third indication arrives, the N sets of TCI states may only include the first state in the second first indication.

[0358] In some embodiments, the N sets of TCI may include only the first set of TCI states in the second first indication information, or the N sets of TCI states may include the first set of TCI states in the second first indication information and the second set of TCI states in the first first indication information.

[0359] In some embodiments, when the first indication information is DCI, and the first indication information has not yet been received, but a MAC CE has been received, and the MAC CE is used to activate N sets of TCI states corresponding to one or more codepoints corresponding to the TCI state field of the DCI, then N sets of TCI states are used. In this case, each set of TCI states can be determined to include a joint TCI state, or each set of TCI states can include at least one of a DL TCI state and a UL TCI state, based on multiple sets of TCI states corresponding to a single codepoint, or the N sets of TCI states corresponding to the smallest codepoint among the codepoints corresponding to the multiple sets of TCI states.

[0360] In some embodiments, the AP CSI-RS may be a channel state information reference signal resource (CSI-RS resource) used for CSI measurement or beam management.

[0361] The disclosed embodiments provide a method for configuring and determining the unified TCI state of aperiodic CSI-RS resources in a terminal with a unified TCI state of multi-DCI and multi-TRP, thereby improving M-TRP transmission performance.

[0362] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0363] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0364] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0365] Figure 6A is a structural diagram of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 6A, the terminal 6100 may include: a processing module 6101. In some embodiments, the processing module is used to determine a first quasi-co-site QCL hypothesis, where the first QCL hypothesis is a QCL hypothesis of a non-periodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index. Optionally, the processing module is used to execute at least one of the other steps (such as steps S2102, S2103 but not limited thereto) performed by the terminal 101 in any of the above methods, which will not be repeated here.

[0366] Figure 6B is a schematic diagram of the structure of the network device proposed in an embodiment of the present disclosure. As shown in Figure 6B, the network device 6200 may include: at least one of the transceiver module 6201, etc. In some embodiments, the transceiver module is used to send a first indication information, and the first indication information is used to indicate at least one set of indicated transmission configuration indication states indicated TCI state, wherein the at least one set of indicated TCI states is used by the terminal to determine a first quasi-co-site QCL hypothesis, and the first QCL hypothesis is a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; wherein the time domain interval between the AP CSI-RS and the first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; the AP CSI-RS and other downlink signals are in the same symbol; the control resource set CORESET corresponding to the first PDCCH corresponds to the first control resource set pool index. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device 102 in any of the above methods (for example: step S2101, but not limited thereto), which will not be repeated here.

[0367] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0368] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0369] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0370] 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, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 7100 is used to perform any of the above methods. Optionally, one or more processors 7101 are used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0371] In some embodiments, the communication device 7100 further includes one or more transceivers 7102. When the communication device 7100 includes one or more transceivers 7102, the transceiver 7102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2102 and step S2103, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S2101, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0372] In some embodiments, the communication device 7100 further includes one or more memories 7103 for storing data. Alternatively, all or part of the memories 7103 may be located outside the communication device 7100. In alternative embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuits 7104 are connected to the memories 7103 and may be configured to receive data from the memories 7103 or other devices, or to send data to the memories 7103 or other devices. For example, the interface circuits 7104 may read data stored in the memories 7103 and send the data to the processor 7101.

[0373] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present 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 an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0374] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0375] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0376] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Alternatively, terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data. Alternatively, all or part of memory 7203 may be located external to chip 7200. Optionally, interface circuit 7202 is connected to memory 7203 and may be used to receive data from memory 7203 or other devices, or may be used to send data to memory 7203 or other devices. For example, interface circuit 7202 may read data stored in memory 7203 and send the data to processor 7201.

[0377] In some embodiments, the interface circuit 7202 performs at least one of the communication steps (e.g., step S2102 and step S2103, but not limited thereto) of the aforementioned method. The interface circuit 7202 performing the communication steps (e.g., step S2102 and step S2103, but not limited thereto) of the aforementioned method means, for example, that the interface circuit 7202 performs data exchange between the processor 7201, chip 7200, memory 7203, or a transceiver device. In some embodiments, the processor 7201 performs at least one of the other steps (e.g., step S2101, but not limited thereto).

[0378] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0379] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes 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 is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0380] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0381] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A method for determining a quasi-co-location hypothesis, characterized in that: The method comprises: The terminal determines a first quasi co-site QCL hypothesis, where the first QCL hypothesis is a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; Wherein, a time domain interval between the AP CSI-RS and a first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; The AP CSI-RS is in the same symbol as other downlink signals; The control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

2. The method according to claim 1, characterized in that The first QCL assumption is the same as the second QCL assumption, and the second QCL assumption is the QCL assumption of the other downlink signal.

3. The method according to claim 1, characterized in that: The first QCL assumption corresponds to a first indicated TCI state of two indicated TCI states.

4. The method according to claim 1, characterized in that: Determine, based on a radio resource control RRC configuration, a transmission configuration indication state TCI state corresponding to the first QCL assumption; The transmission configuration indication state corresponding to the first QCL assumption includes any one of the following: Corresponding to the first indicated transmission configuration indication state of the two indicated transmission configuration indication states; Corresponding to the second indicated transmission configuration indication state of the two indicated transmission configuration indication states.

5. The method according to claim 3 or 4, characterized in that: The indicated transmission configuration indication state includes: an indicated joint transmission configuration indication state indicated joint TCI state, or an indicated downlink transmission configuration indication state indicated DL TCI state.

6. The method according to claim 1 or 2, characterized in that: The AP CSI-RS is configured as any of the following: Follow the unified TCI status; Does not follow the unified TCI status.

7. The method according to any one of claims 1, 2 and 6, characterized in that: The other downlink signals include at least one of the following: A physical downlink shared channel PDSCH scheduled by the second PDCCH; AP CSI-RS scheduled by the third PDCCH; Periodic CSI-RS; Semi-persistent CSI-RS; Wherein, the time domain interval between the PDSCH and the second PDCCH is greater than or equal to a second time threshold; The time domain interval between the AP CSI-RS scheduled by the third PDCCH and the third PDCCH is greater than the first time threshold; The control resource set pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource set pool index.

8. The method according to claim 1 or 3, characterized in that: The TCI state of the AP CSI-RS is not configured to follow the unified TCI state.

9. The method according to claim 1 or 4, characterized in that: The RRC configuration includes any one of the following: RRC configures the AP CSI-RS to follow the first indicated transmission configuration indication state; The RRC configures the AP CSI-RS to follow the second indicated transmission configuration indication state.

10. The method according to any one of claims 1, 3, 4, 8 and 9, characterized in that: The other downlink signals include: A first PDSCH and a second PDSCH; The first PDSCH and the second PDSCH satisfy at least one of the following: The time domain interval between the first PDSCH and the fourth PDCCH is greater than or equal to a second time threshold, wherein the fourth PDCCH is a PDCCH that schedules the first PDSCH; The time domain interval between the second PDSCH and the fifth PDCCH is greater than or equal to a second time threshold, wherein the fifth PDCCH is a PDCCH that schedules the second PDSCH; The control resource set pool index of the control resource set corresponding to the fourth PDCCH is different from the control resource set pool index of the control resource set corresponding to the fifth PDCCH; The first PDSCH corresponds to a first indicated joint transmission configuration indication state or a first indicated downlink transmission configuration indication state indicated DL TCI state; The second PDSCH corresponds to the second indicated joint transmission configuration indication state or the second indicated downlink transmission configuration Indicates status.

11. The method according to claim 4, characterized in that The two indicated transmission configuration indication states are determined based on first indication information, where the first indication information satisfies at least one of the following: The first indication information includes a first media access control control element MAC CE, and the first MAC CE is used to activate at least one set of indicated transmission configuration indication states; the at least one set of indicated transmission configuration indication states corresponds to a code point in the transmission configuration indication state indication field of the downlink control information DCI; or The first indication information includes a second MAC CE and a first DCI, wherein the second MAC CE is used to indicate at least one set of indicated transmission configuration indication states corresponding to each code point in a plurality of code points in a DCI transmission configuration indication state indication field, and the transmission configuration indication state indication field of the first DCI is used to indicate one code point in the plurality of code points, A set of indicated transmission configuration indication states includes an indicated joint transmission configuration indication state, or a set of indicated transmission configuration indication states includes an indicated downlink transmission configuration indication state and / or an indicated uplink transmission configuration indication state.

12. According to the method according to any one of claims 1 to 11, the AP CSI-RS is a CSI-RS for CSI measurement or a CSI-RS for beam management.

13. A method for determining a quasi-co-location hypothesis, characterized in that: The method comprises: sending first indication information, where the first indication information is used to indicate at least one set of indicated transmission configuration indication states indicated TCI states, The at least one set of transmission configuration indication states is used by the terminal to determine a first quasi co-located QCL hypothesis, where the first QCL hypothesis is a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; Wherein, a time domain interval between the AP CSI-RS and a first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; The AP CSI-RS is in the same symbol as other downlink signals; The control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

14. The method according to claim 13, characterized in that The first QCL assumption is the same as the second QCL assumption, and the second QCL assumption is the QCL assumption of the other downlink signal.

15. The method according to claim 13, characterized in that The first QCL assumption corresponds to a first indicated transmission configuration indication state of two indicated transmission configuration indication states.

16. The method according to claim 13, characterized in that Sending a radio resource control RRC configuration signaling to indicate a transmission configuration indication state TCI state corresponding to the first QCL assumption; The transmission configuration indication state corresponding to the first QCL assumption includes any one of the following: Corresponding to the first indicated transmission configuration indication state of the two indicated transmission configuration indication states; Corresponding to the second indicated transmission configuration indication state of the two indicated transmission configuration indication states.

17. The method according to claim 15 or 16, characterized in that The indicated transmission configuration indication state includes: an indicated joint transmission configuration indication state indicated joint TCI state, or an indicated downlink transmission configuration indication state indicated DL TCI state.

18. The method according to claim 13 or 14, characterized in that Send radio resource control RRC configuration signaling to indicate the AP CSI-RS Follow the unified TCI status or Does not follow the unified TCI status.

19. The method according to any one of claims 13, 14 and 18, characterized in that: The other downlink signals include at least one of the following: A physical downlink shared channel PDSCH scheduled by the second PDCCH; AP CSI-RS scheduled by the third PDCCH; Periodic CSI-RS; Semi-persistent CSI-RS; Wherein, the time domain interval between the PDSCH and the second PDCCH is greater than or equal to a second time threshold; The time domain interval between the AP CSI-RS scheduled by the third PDCCH and the third PDCCH is greater than the first time threshold; The control resource set pool index of the control resource set corresponding to the second PDCCH or the third PDCCH is the first control resource set pool index.

20. The method according to claim 13 or 15, characterized in that Sending radio resource control RRC configuration signaling to indicate that the TCI state of the AP CSI-RS does not follow the unified TCI state.

21. The method according to claim 13 or 16, characterized in that The RRC configuration includes any one of the following: RRC configures the AP CSI-RS to follow the first indicated transmission configuration indication state; The RRC configures the AP CSI-RS to follow the second indicated transmission configuration indication state.

22. The method according to any one of claims 13, 15, 16, 20 and 21, characterized in that: The other downlink signals include: A first PDSCH and a second PDSCH; The first PDSCH and the second PDSCH satisfy at least one of the following: The time domain interval between the first PDSCH and the fourth PDCCH is greater than or equal to a second time threshold, wherein the fourth PDCCH is a PDCCH that schedules the first PDSCH; The time domain interval between the second PDSCH and the fifth PDCCH is greater than or equal to a second time threshold, wherein the fifth PDCCH is a PDCCH that schedules the second PDSCH; The control resource set pool index of the control resource set corresponding to the fourth PDCCH is different from the control resource set pool index of the control resource set corresponding to the fifth PDCCH; The first PDSCH corresponds to a first indicated joint transmission configuration indication state or a first indicated downlink transmission configuration indication state; The second PDSCH corresponds to a second indicated joint transmission configuration indication state or a second indicated downlink transmission configuration indication state.

23. The method according to claim 16, characterized in that The first indication information satisfies at least one of the following: The first indication information includes a first media access control control element MAC CE, wherein the first MAC CE is used to activate at least one set of indicated transmission configuration indication states; the at least one set of indicated transmission configuration indication states corresponds to a code point in a TCI state indication field of downlink control information DCI; or The first indication information includes a second MAC CE and a first DCI, wherein the second MAC CE is used to indicate at least one set of indicated transmission configuration indication states corresponding to each code point in a plurality of code points in a DCI transmission configuration indication state indication field, and the TCI state indication field of the first DCI is used to indicate one code point in the plurality of code points, A set of indicated transmission configuration indication states includes an indicated uplink and downlink joint transmission configuration indication state, or a set of indicated transmission configuration indication states includes an indicated downlink transmission configuration indication state and / or an indicated uplink transmission configuration indication state.

24. The method according to any one of claims 13 to 23, wherein the AP CSI-RS is a CSI-RS for CSI measurement or a CSI-RS for beam management.

25. A method for determining a quasi-co-location hypothesis, characterized in that: The network device sends first indication information, where the first indication information is used to indicate at least one set of indicated transmission configuration indication states indicated TCI states; The terminal determines a first quasi co-location QCL hypothesis based on the at least one set of indicated transmission configuration indication states, where the first QCL hypothesis is a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; Wherein, a time domain interval between the AP CSI-RS and a first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; The AP CSI-RS is in the same symbol as other downlink signals; The control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

26. A terminal, characterized in that: include: A processing module, configured to determine a first quasi co-located QCL hypothesis, where the first QCL hypothesis is a QCL hypothesis of an aperiodic channel state information reference signal AP CSI-RS; Wherein, a time domain interval between the AP CSI-RS and a first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; The AP CSI-RS is in the same symbol as other downlink signals; The control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

27. A network device, characterized in that: include: a transceiver module, configured to send first indication information, wherein the first indication information is used to indicate at least one set of indicated transmission configuration indication states indicated TCI states, The at least one set of indicated transmission configuration indication states is used by the terminal to determine a first quasi co-location QCL hypothesis, wherein the first The QCL assumption is the QCL assumption of the aperiodic channel state information reference signal AP CSI-RS; Wherein, a time domain interval between the AP CSI-RS and a first physical downlink control channel PDCCH that schedules the AP CSI-RS is less than or equal to a first time threshold; The AP CSI-RS is in the same symbol as other downlink signals; The control resource set CORESET corresponding to the first PDCCH corresponds to a first control resource set pool index.

28. A terminal, characterized in that: include: one or more processors; The processor is used to execute the quasi co-location hypothesis determination method described in any one of claims 1 to 12.

29. A network device, characterized in that: include: one or more processors; The processor is used to execute the quasi co-location hypothesis determination method described in any one of claims 13 to 24.

30. A communication system, characterized in that: It comprises a terminal and a network device, wherein the terminal is configured to implement the quasi co-location hypothesis determination method according to any one of claims 1 to 12, and the network device is configured to implement the quasi co-location hypothesis determination method according to any one of claims 13 to 24.

31. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to perform the quasi co-location hypothesis determination method according to any one of claims 1 to 12 or 13 to 24.

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