Wireless communication method, device and system

Abstract

An embodiment of the present application provides a wireless communication method, apparatus and system, the method comprising: a terminal device receives control information, the control information triggers a channel or signal, the reception or monitoring of the control information is related to two TCI states, and the DCI format corresponding to the control information does not include a TCI domain; the terminal device sends or receives the channel or signal according to the two TCI states or according to one of the two TCI states.

Description

Technical Field

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

[0002] In order to alleviate the increasingly tight spectrum resources, NR (New Radio) introduced high-frequency communication methods to increase the frequency resources available to the communication system and thus improve the system capacity.

[0003] NR Release 15 introduced a method for indicating the QCL (quasi-collocation) parameters of the PDCCH (Physical Downlink Control Channel). Generally speaking, in a CORESET (control resource set), the QCL parameters of the antenna port of the PDCCH DM-RS (Demodulation Reference Signal) are indicated by RRC (Radio Resource Control) signaling and MAC-CE (Media Access Control-Control Element) signaling. Specifically, if the CORESET corresponding to a PDCCH is configured with more than one TCI (Transmission Configuration Indicator) state through RRC signaling (tci-StatesPDCCH-ToAddList or tci-StatesPDCCH-ToReleaseList), MAC-CE can be used to activate one of the TCI states. When the TCI state is activated, the antenna port of the DM-RS of the PDCCH and the reference signal corresponding to the activated TCI state are QCL (quasi-colocated).

[0004] NR Release 15 also introduces a method for indicating the QCL parameters of PDSCH (Physical Downlink Shared Channel). Generally speaking, for dynamic scheduling, there are two methods for indicating the QCL parameters of PDSCH: If a PDSCH scheduling DCI format (Downlink Control Information format) contains a TCI field, the QCL parameters of the PDSCH are determined by the TCI state indicated by the TCI field of the DCI format; If a PDSCH scheduling DCI format does not contain a TCI field, the QCL parameters of the PDSCH are determined by the TCI state or QCL assumption applied by the CORESET corresponding to the DCI format (PDCCH) received.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0006] The inventors found that the NR system supports a central transmission frequency of up to 52.6 GHz. In high-frequency scenarios, due to the poor diffraction ability of the signal, it is easy to be blocked (blockage). This degradation of channel quality due to blockage is very unfavorable for URLLC (Ultra-Relaible and Low Latency Communication) services. This is because, according to the existing beam failure recovery mechanism, it takes at least tens of milliseconds to restore the communication link, and the communication delay requirements of URLLC are generally much less than tens of milliseconds. In the event of obstruction, the channel corresponding to the high-frequency downlink may deteriorate instantly. However, the existing recovery mechanism requires too long to meet the delay requirements of URLLC services.

[0007] In order to reduce the impact of obstruction on the downlink, especially the impact on downlink control information, a feasible way is to send the downlink control information in a spatial diversity manner. In other words, the same downlink control information can reach the UE (User Equipment) via different airspace paths or different TRPs (transmission and reception points). In this way, when one path is obstructed, other paths can still continue to work, thereby ensuring low latency and high reliability of downlink control information.

[0008] However, when a downlink control information is associated with two TCI states (that is, it simultaneously passes through two different airspace paths), and the downlink control information does not include a TCI domain, the TCI state associated with the channel (or signal) triggered by the downlink control information cannot be determined through the existing mechanism. More specifically, in this case, the downlink control information is associated with two TCI states, and the prior art cannot determine the relationship between the two TCI states associated with the downlink control information and the TCI state associated with the PDSCH scheduled by the downlink control information.

[0009] In order to solve the above problems or other similar problems, the embodiments of the present application provide a wireless communication method, device and system to avoid the problem of system performance degradation caused by unclear TCI status of the channel or signal.

[0010] According to one aspect of an embodiment of the present application, a wireless communication method is provided, the method comprising:

[0011] The terminal device receives control information, the control information triggers a channel or signal, the reception or monitoring of the control information is related to two TCI states, and the DCI format corresponding to the control information does not include a TCI field;

[0012] The terminal device sends or receives the channel or signal according to the two TCI states or according to one of the two TCI states.

[0013] According to another aspect of an embodiment of the present application, a wireless communication method is provided, the method comprising:

[0014] The network device sends control information, where the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0015] According to another aspect of the embodiments of the present application, a wireless communication method is provided, the method comprising:

[0016] The terminal device receives control information, where the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0017] According to one aspect of an embodiment of the present application, a wireless communication device is provided, the device comprising:

[0018] A receiving unit, which receives control information, wherein the control information triggers a channel or a signal, the reception or monitoring of the control information is related to two TCI states, and the DCI format corresponding to the control information does not include a TCI field;

[0019] A processing unit that sends or receives the channel or signal according to the two TCI states or according to one of the two TCI states.

[0020] According to another aspect of an embodiment of the present application, a wireless communication device is provided, the device comprising:

[0021] A sending unit sends control information, wherein the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0022] According to another aspect of the embodiments of the present application, a wireless communication device is provided, the device comprising:

[0023] A receiving unit receives control information, wherein the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0024] One of the beneficial effects of the embodiments of the present application is that: on the one hand, when a control information (not including a TCI domain) triggers a channel or signal, the TCI state of the channel or signal is determined by the TCI state associated with the control information. Through this method, the mapping relationship between the two TCI states associated with the control information and the TCI state of the signal or channel can be determined to avoid the ambiguity of the TCI state of the channel or signal, and the method can reduce the overhead caused by indicating the TCI state of the channel or signal in the control information. On the other hand, when a control information triggers a channel or signal, if the control information is associated with two TCI states, the control information includes a TCI domain. Through this method, the above-mentioned control information can always include a TCI domain, and the TCI state of the signal or channel triggered by the control information is indicated by the TCI domain it contains, thereby clarifying the TCI state of the signal or channel, and making the TCI state indication of the signal or channel more flexible.

[0025] With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the spirit and clauses of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

[0026] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0027] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The elements and features described in one figure or one implementation of the present application embodiment may be combined with the elements and features shown in one or more other figures or implementations. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one implementation.

[0029] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0030] Figure 1 is a schematic diagram of a wireless communication method according to an embodiment of the first aspect of the present application;

[0031] Figure 2 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH;

[0032] Figure 3 is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a PDSCH with a single TCI scheduled by the PDCCH;

[0033] Figure 4 It is another schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH;

[0034] Figure 5 It is another schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH;

[0035] Figure 6 It is another schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH;

[0036] Figure 7 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH of multiple TCIs scheduled by the PDCCH;

[0037] Figure 8 is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a PDSCH of multiple TCIs scheduled by the PDCCH;

[0038] Fig. 9 is a schematic diagram of a wireless communication method according to an embodiment of the second aspect of the present application;

[0039] Fig.10 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH;

[0040] Fig.11 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH of multiple TCIs scheduled by the PDCCH;

[0041] Fig.12 is a schematic diagram of a wireless communication method according to an embodiment of the third aspect of the present application;

[0042] Fig.13 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH;

[0043] Fig.14 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH of multiple TCIs scheduled by the PDCCH;

[0044] Fig.15 is a schematic diagram of a wireless communication device according to an embodiment of the fourth aspect of the present application;

[0045] Fig.16 is a schematic diagram of a wireless communication device according to an embodiment of the fifth aspect of the present application;

[0046] Fig.17 is a schematic diagram of a wireless communication device according to an embodiment of the sixth aspect of the present application;

[0047] Fig.18 is a schematic diagram of a communication system of an embodiment of a seventh aspect of the present application;

[0048] Fig.19 is a schematic diagram of a terminal device of an embodiment of the seventh aspect of the present application;

[0049] Fig. 20 It is a schematic diagram of a network device of an embodiment of the seventh aspect of the present application. DETAILED DESCRIPTION

[0050] With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the description and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents falling within the scope of the attached claims.

[0051] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or temporal order of these elements, etc., and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0052] In the embodiments of the present application, the singular forms "a", "the", etc. include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

[0053] In an embodiment of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed ​​Packet Access (HSPA, High-Speed ​​Packet Access), etc.

[0054] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, new wireless (NR, New Radio), etc., and / or other communication protocols currently known or to be developed in the future.

[0055] In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. The network device may include, but is not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0056] Among them, base stations may include but are not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB) and 5G base station (gNB), etc., and may also include remote radio heads (RRH, Remote Radio Head), remote radio units (RRU, Remote Radio Unit), relays or low-power nodes (such as femto, pico, etc.). And the term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographical area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0057] In the embodiments of the present application, the term "user equipment" (UE) refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be referred to as "terminal equipment" (TE). The terminal equipment may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a user, a subscriber station (SS), an access terminal (AT), a station, and the like.

[0058] Among them, the terminal device may include but is not limited to the following devices: cellular phone, personal digital assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, cordless phone, smart phone, smart watch, digital camera, etc.

[0059] For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measuring, such as but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device to device (D2D) terminal, machine to machine (M2M) terminal, and the like.

[0060] Various implementations of the present application are described below in conjunction with the accompanying drawings. These implementations are merely exemplary and are not intended to limit the present application.

[0061] Embodiments of the first aspect

[0062] An embodiment of the present application provides a wireless communication method, which is described from the perspective of a terminal device.

[0063] Figure 1 is a schematic diagram of a wireless communication method according to an embodiment of the present application, please refer to Figure 1 , the method comprising:

[0064] 101: The terminal device receives control information, where the control information triggers a channel or a signal, where the reception or monitoring of the control information is related to two TCI states, and where the DCI format corresponding to the control information does not include a TCI field;

[0065] 102: The terminal device sends or receives the channel or signal according to the two TCI states or according to one of the two TCI states.

[0066] According to the method of the embodiment of the present application, when a control information (not including the TCI field) triggers a channel or signal, the TCI state of the channel or signal is determined by the TCI state associated with the control information. Thus, the method can determine the mapping relationship between the two TCI states associated with the control information and the TCI state of the signal or channel, avoiding ambiguity in the TCI state of the channel or signal, and the method can reduce the overhead generated by indicating the TCI state of the channel or signal in the control information.

[0067] In the embodiment of the present application, the channel or signal is related to at least one of the two TCI states. Thus, the terminal device can send or receive the channel or signal according to the two TCI states or according to one of the two TCI states.

[0068] For example, one of the two TCI states is a first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the control information. The terminal device sends or receives the channel or signal according to the first TCI state. This embodiment determines the TCI state of the channel or signal triggered by the control information through the first TCI state indicated by the MAC-CE signaling. Thus, the TCI state of the channel or signal can be flexibly changed.

[0069] For another example, one of the two TCI states is the TCI state with the lowest ID in the TCI state of the control resource set (CORESET) used to receive or monitor the control information. The terminal device sends or receives the channel or signal according to the TCI state with the lowest ID. This embodiment determines the TCI state of the channel / signal triggered by the control information by the TCI state with the lowest ID. Thus, the TCI state of the channel or signal can be directly determined by the TCI state ID, avoiding additional signaling overhead.

[0070] For another example, one of the two TCI states is the TCI state applied by the first control resource set indicated by RRC signaling in the two control resource sets for receiving or monitoring the control information. The terminal device sends or receives the channel or signal according to the TCI state. This embodiment determines the TCI state of the channel or signal triggered by the control information by the TCI state of the first CORESET indicated by the RRC signaling. Thus, the TCI state of the channel or signal can be flexibly changed.

[0071] For another example, one of the two TCI states is the TCI state applied by the control resource set with the lowest ID in the two control resource sets used to receive or monitor the control information. The terminal device sends or receives the channel or signal according to the TCI state. This embodiment determines the TCI state of the channel or signal triggered by the control information by the TCI state of the CORESET with the lowest ID. Thus, the TCI state of the channel or signal can be directly determined by the ID of the associated CORESET, avoiding additional signaling overhead.

[0072] For another example, one of the two TCI states is a TCI state corresponding to the first search space set indicated by RRC signaling in the two search space sets for receiving or monitoring the control information. The terminal device sends or receives the channel or signal according to the TCI state. This embodiment determines the TCI state of the channel or signal triggered by the control information through the TCI state of the first search space set indicated by the RRC signaling. In this way, the TCI state of the channel or signal can be flexibly changed.

[0073] For another example, one of the two TCI states is the TCI state corresponding to the search space set with the lowest ID in the two search space sets used to receive or monitor the control information. The terminal device sends or receives the channel or signal according to the TCI state. This embodiment determines the TCI state of the channel or signal triggered by the control information by the TCI state of the search space set with the lowest ID. Thus, the TCI state of the channel or signal can be directly determined by the ID of the associated search space set, avoiding additional signaling overhead.

[0074] For another example, one of the two TCI states is the TCI state applied by the time-frequency resources for receiving or monitoring the control information. The terminal device sends or receives the channel or signal according to the TCI state. This embodiment determines the TCI state of the channel or signal triggered by the control information by receiving or monitoring the time-frequency resources corresponding to the control information. Thus, the TCI state of the channel or signal can be directly determined by the time-frequency resources, avoiding additional signaling overhead.

[0075] In this example, the time-frequency resource used for receiving or monitoring the control information may be the earliest symbol used for receiving or monitoring the control information; it may also be the PRB (Physical Resource Block) with the lowest index used for receiving or monitoring the control information; it may also be the PRB with the lowest index within the earliest symbol used for receiving or monitoring the control information. The present application is not limited thereto.

[0076] In the embodiments of the present application, in some embodiments, the above-mentioned channel or signal is a downlink channel or signal, such as PDSCH or CSI-RS (Channel State Information-Reference Signal), etc.; in some embodiments, the above-mentioned channel or signal is an uplink channel or signal, such as PUSCH (Physical Uplink Shared Channel), PUCCH (Physical Uplink Control Channel), and / or SRS (Sounding Reference Signal), etc.

[0077] Taking the above-mentioned channel or signal as PDSCH as an example, in some embodiments, the PDSCH is related to a first TCI state, and the first TCI state may be at least one of the following:

[0078] A first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the above control information;

[0079] The TCI state of the lowest ID among the TCI states of the control resource set (CORESET) for receiving or monitoring the above control information;

[0080] A TCI state applied by a first control resource set indicated by RRC signaling in two control resource sets for receiving or monitoring the above control information;

[0081] The TCI state applied by the control resource set with the lowest ID in the two control resource sets for receiving or monitoring the above control information;

[0082] Used to receive or monitor the TCI state corresponding to the first search space set indicated by RRC signaling in the two search space sets of the above control information;

[0083] Used to receive or monitor the TCI state corresponding to the search space set with the lowest ID in the two search space sets of the above control information;

[0084] The TCI status applied by the time-frequency resources used to receive or monitor the above control information.

[0085] In the above embodiment, the time-frequency resource used for receiving or monitoring the above control information may be the earliest symbol used for receiving or monitoring the control information, or the PRB with the lowest index used for receiving or monitoring the control information, or the PRB with the lowest index within the earliest symbol used for receiving or monitoring the control information. The present application is not limited thereto.

[0086] In the above embodiments, in some embodiments, the PDSCH is also related to a second TCI state, and the second TCI state may be a TCI state of the above two TCI states except the above first TCI state.

[0087] For example, assuming that the first TCI state is the first TCI state indicated by the MAC-CE command in the TCI state of the control resource set (CORESET) used to receive or monitor the control information, then the second TCI state is the second TCI state indicated by the MAC-CE command.

[0088] For another example, assuming that the first TCI state is the TCI state with the lowest ID among the TCI states of the control resource set (CORESET) used to receive or monitor the above control information, then the second TCI state is the TCI state with the highest ID among the TCI states of the control resource set (CORESET) used to receive or monitor the above control information.

[0089] And so on, I won’t go into details.

[0090] In the embodiments of the present application, in some embodiments, the above-mentioned channel or signal is related to two TCI states, such as a multi-TRP PDSCH scenario.

[0091] In an embodiment of the present application, the terminal device can determine whether to send or receive the above-mentioned channel or signal according to the above-mentioned two TCI states, or to send or receive the above-mentioned channel or signal according to one of the above-mentioned two TCI states based on RRC signaling or the DCI field of the above-mentioned DCI format. For example, the above-mentioned RRC signaling is used to indicate whether the above-mentioned channel or signal is related to one TCI state or two TCI states. In some embodiments, the DCI field of the above-mentioned DCI format can be the TDRA (Time Domain Resource Allocation) field of the above-mentioned DCI format. The present application is not limited to this.

[0092] In an embodiment of the present application, the time offset (timeoffset) between the control information and the channel or signal is greater than or equal to a pre-determined time period, for example, the time offset is greater than or equal to timeDurationForQCL. Thus, the terminal device can determine the QCL parameters of the channel or signal according to the QCL parameters associated with the control information. For the definition of timeDurationForQCL, reference can be made to the relevant technology, and the description is omitted here.

[0093] The method of the embodiment of the present application is explained below through several specific examples.

[0094] Figure 2 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH.

[0095] like Figure 2 As shown, the UE receives a PDCCH (control information) associated with two TCI states in time slot n, and the PDCCH schedules a PDSCH (channel or signal). The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0096] In addition, the DCI format corresponding to the PDCCH does not include a TCI domain; the search space corresponding to the PDCCH is SS#1; the CORESET corresponding to the search space SS#1 is CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, and the second TCI state activated by the MAC-CE activation signaling is TCI#2; in addition, the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the second symbol of time slot n is TCI#2.

[0097] In this example, according to the method of the embodiment of the present application, the UE may determine that the PDSCH is associated with a TCI state according to the following method 1 or method 2:

[0098] Method 1: Before the UE receives the PDCCH and PDSCH, the UE receives an RRC signaling, and the UE determines that the PDSCH is associated with a TCI state according to the RRC signaling;

[0099] Method 2: The UE determines that the PDSCH is associated with a TCI state according to the TDRA field in the DCI format corresponding to the PDCCH.

[0100] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of the PDSCH according to the following method:

[0101] Method #1-1: Determine the TCI state of the PDSCH according to the first TCI state used to receive the PDCCH. For example, the reception of the PDCCH is based on the TCI state of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the first TCI state (TCI#1) activated by the MAC-CE for CORESET#1.

[0102] Method #1-2: Determine the TCI state of the PDSCH according to the second TCI state used to receive the PDCCH. For example, the reception of the PDCCH is based on the TCI state of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the second TCI state (TCI#2) activated by the MAC-CE for CORESET#1.

[0103] Method #2-1: Determine the TCI state of the PDSCH according to the TCI state of the minimum ID used to receive the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of the CORESET#1 corresponding to the above PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) with the minimum ID activated by MAC-CE for CORESET#1.

[0104] Method #2-2: Determine the TCI state of the PDSCH based on the TCI state of the maximum ID used to receive the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of the CORESET#1 corresponding to the above PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) with the largest ID activated by MAC-CE for CORESET#1.

[0105] Method #3-1: Determine the TCI state of the PDSCH according to the TCI state applied to the earliest symbol for receiving the above PDCCH. For example, if the earliest symbol received by the above PDCCH is the first symbol of time slot n, the TCI state of the PDSCH is determined by the TCI state (TCI#1) applied by the PDCCH on this symbol.

[0106] Method #3-2: Determine the TCI state of the PDSCH according to the TCI state applied to the latest symbol for receiving the above PDCCH. For example, if the latest symbol received by the above PDCCH is the second symbol of time slot n, the TCI state of the PDSCH is determined by the TCI state (TCI#2) applied by the PDCCH on this symbol.

[0107] Figure 3 It is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a PDSCH with a single TCI scheduled by the PDCCH.

[0108] like Figure 3 As shown, the UE receives a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal). The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0109] In addition, the DCI format corresponding to the PDCCH does not include a TCI domain; the search space corresponding to the PDCCH is SS#1; the CORESET corresponding to the search space SS#1 is CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, and the second TCI state activated by the MAC-CE activation signaling is TCI#2; in addition, for CORESET#1, its frequency domain resources are divided into two parts, wherein the TCI state applied to the higher frequency part is TCI#1, and the TCI state applied to the lower frequency part is TCI#2.

[0110] In this example, according to the method of the embodiment of the present application, the UE may determine that the PDSCH is associated with a TCI state according to the following method 1 or method 2:

[0111] Method 1: Before the UE receives the PDCCH and PDSCH, the UE receives an RRC signaling, and the UE determines that the PDSCH is associated with a TCI state according to the RRC signaling;

[0112] Method 2: The UE determines that the PDSCH is associated with a TCI state according to the TDRA field in the DCI format corresponding to the PDCCH.

[0113] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of the PDSCH according to the following method:

[0114] Method #1-1: Determine the TCI state of the PDSCH according to the first TCI state used to receive the PDCCH. For example, if the reception of the PDCCH is based on the TCI state of the CORESET#1 corresponding to the PDCCH, the TCI state of the PDSCH is determined by the first TCI state (TCI#1) activated by the MAC-CE for CORESET#1.

[0115] Method #1-2: Determine the TCI state of the PDSCH according to the second TCI state used to receive the PDCCH. For example, if the PDCCH is received according to the TCI state of the CORESET#1 corresponding to the PDCCH, the TCI state of the PDSCH is determined by the second TCI state (TCI#2) activated by the MAC-CE for CORESET#1.

[0116] Method #2-1: Determine the TCI state of the PDSCH according to the TCI state of the minimum ID used to receive the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of the CORESET#1 corresponding to the above PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) with the minimum ID activated by MAC-CE for CORESET#1.

[0117] Method #2-2: Determine the TCI state of the PDSCH based on the TCI state of the maximum ID used to receive the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of the CORESET#1 corresponding to the above PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) with the largest ID activated by MAC-CE for CORESET#1.

[0118] Method #3-1: Determine the TCI state (TCI#1) of the PDSCH according to the TCI state (TCI#1) applied to the PRB with the highest frequency (eg, the PRB with the highest ID) in the frequency domain resources used to receive the above-mentioned PDCCH.

[0119] Method #3-2: Determine the TCI state (TCI#2) of the PDSCH based on the TCI state (TCI#2) applied to the PRB with the lowest frequency (eg, the PRB with the lowest ID) in the frequency domain resources used to receive the PDCCH.

[0120] Method #4: Determine the TCI state (TCI#2) of the PDSCH according to the TCI state (TCI#2) applied to the PRB with the lowest frequency (e.g., the PRB with the lowest ID) in the earliest symbol in the time-frequency resource for receiving the above-mentioned PDCCH. For example, if the earliest symbol received by the above-mentioned PDCCH is the first symbol of time slot n, the TCI state of the PDSCH is determined by the TCI state applied to the PRB with the lowest frequency corresponding to the PDCCH on the symbol (TCI#2).

[0121] In the above Figure 2 and Figure 3 In the example of , there is no repetition of PDCCH. And, Figure 2 The case of time division multiplexing (TDM) is shown. Figure 3 The case of frequency division multiplexing (FDM) is shown.

[0122] Figure 4 It is another schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH.

[0123] like Figure 4 As shown, the UE receives a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal). The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0124] In addition, the DCI format corresponding to the PDCCH does not include a TCI domain; the PDCCH includes two parts, namely PDCCH#rep1 and PDCCH#rep2, wherein PDCCH#rep1 and PDCCH#rep2 correspond to the same DCI bit; the search spaces corresponding to the PDCCH are SS#1 and SS#2, wherein SS#1 is located at the first symbol of time slot n, and SS#2 is located at the third symbol of time slot n. For example, the UE knows in advance that SS#1 and SS#2 are associated, SS#1 corresponds to the first SS, and SS#2 corresponds to the second SS. A repetition corresponding to the PDCCH can be received on these two SSs respectively; according to R In the configuration of RC signaling, the CORESETs corresponding to the search spaces SS#1 and SS#2 are both CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by the MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, wherein SS#2 corresponds to TCI#1; the second TCI state activated by the MAC-CE activation signaling is TCI#2, wherein SS#1 corresponds to TCI#2; in addition, the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the third symbol of time slot n is TCI#2.

[0125] In this example, according to the method of the embodiment of the present application, the UE may determine that the PDSCH is associated with a TCI state according to the following method 1 or method 2:

[0126] Method 1: Before the UE receives the PDCCH and PDSCH, the UE receives an RRC signaling, and the UE determines that the PDSCH is associated with a TCI state according to the RRC signaling;

[0127] Method 2: The UE determines that the PDSCH is associated with a TCI state according to the TDRA field in the DCI format corresponding to the PDCCH.

[0128] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of the PDSCH according to the following method:

[0129] Method 1-1: Determine the TCI state of the PDSCH according to the first TCI state used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the first TCI state (TCI#1) activated by the MAC-CE for CORESET#1.

[0130] Method 1-2: Determine the TCI state of the PDSCH according to the second TCI state used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the second TCI state (TCI#2) activated by the MAC-CE for the CORESET#1.

[0131] Method 2-1: Determine the TCI state of the PDSCH according to the TCI state with the smallest ID used to monitor the above PDCCH. For example, if the monitoring of the above PDCCH is based on one of the two TCI states of CORESET#1 corresponding to the above PDCCH, the TCI state of the PDSCH is determined by the TCI state with the smallest ID (TCI#1) activated by MAC-CE for CORESET#1.

[0132] Method 2-2: Determine the TCI state of the PDSCH according to the TCI state with the largest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state with the largest ID (TCI#2) activated by the MAC-CE for CORESET#1.

[0133] Method 3-1: Determine the TCI state of the PDSCH according to the TCI state of the first SS used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two SSs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) of the first SS (SS#1) activated by MAC-CE for CORESET#1.

[0134] Method 3-2: Determine the TCI state of the PDSCH according to the TCI state of the second SS used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two SSs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) of the second SS (SS#2) activated by MAC-CE for CORESET#1.

[0135] Method 4-1: Determine the TCI state of the PDSCH according to the TCI state of the SS with the smallest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two SSs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) of the SS with the smallest ID (SS#1) activated by MAC-CE for CORESET#1.

[0136] Method 4-2: Determine the TCI state of the PDSCH according to the TCI state of the SS with the largest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two SSs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) of the SS with the largest ID (SS#2) activated by MAC-CE for CORESET#1.

[0137] Method 5-1: Determine the TCI state of the PDSCH according to the TCI state (TCI#1) applied to the earliest symbol for monitoring the PDCCH. For example, if the earliest symbol corresponding to the monitoring of the PDCCH is the first symbol of time slot n, the TCI state of the PDSCH is determined by the TCI state applied by the PDCCH on the symbol.

[0138] Method 5-2: Determine the TCI state of the PDSCH according to the TCI state (TCI#2) applied to the latest symbol for monitoring the PDCCH. For example, if the latest symbol corresponding to the PDCCH monitoring is the third symbol of time slot n, the TCI state of the PDSCH is determined by the TCI state applied by the PDCCH on the symbol.

[0139] Figure 5 This is another schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH.

[0140] like Figure 5 As shown, the UE receives a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal). The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0141] In addition, the DCI format corresponding to the PDCCH does not include a TCI domain; the PDCCH includes two parts, namely PDCCH#rep1 and PDCCH#rep2, wherein PDCCH#rep1 and PDCCH#rep2 correspond to the same DCI bit; the search space corresponding to the PDCCH is SS#1; according to the configuration of the RRC signaling, the search space SS#1 corresponds to CORESET#1 and CORESET#2, for example, the UE knows in advance that CORESET#1 and CORESET#2 are associated, CORESET#1 corresponds to TCI#2, and CORESET#2 corresponds to TCI#1.

[0142] In this example, according to the method of the embodiment of the present application, the UE may determine that the PDSCH is associated with a TCI state according to the following method 1 or method 2:

[0143] Method 1: Before the UE receives the PDCCH and PDSCH, the UE receives an RRC signaling, and the UE determines that the PDSCH is associated with a TCI state according to the RRC signaling;

[0144] Method 2: The UE determines that the PDSCH is associated with a TCI state according to the TDRA field in the DCI format corresponding to the PDCCH.

[0145] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of the PDSCH according to the following method:

[0146] Method 2-1: Determine the TCI state of the PDSCH according to the TCI state with the smallest ID used to monitor the above PDCCH. For example, the monitoring of the above PDCCH is based on one of the two TCI states of CORESET#1 and CORESET#2 corresponding to the above PDCCH, and the TCI state of the PDSCH is determined by the TCI state with the smallest ID (TCI#1) activated by MAC-CE for CORESET#1 and CORESET#2.

[0147] Method 2-2: Determine the TCI state of the PDSCH according to the TCI state with the largest ID used to monitor the above PDCCH. For example, the monitoring of the above PDCCH is based on one of the two TCI states of CORESET#1 and CORESET#2 corresponding to the above PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) with the largest ID activated by MAC-CE for CORESET#1 and CORESET#2.

[0148] Method 3-1: Determine the TCI state of the PDSCH according to the TCI state of the first CORESET used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) applied to the first CORESET (CORESET#1).

[0149] Method 3-2: Determine the TCI state of the PDSCH according to the TCI state of the second CORESET used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) applied to the second CORESET (CORESET#2).

[0150] Method 4-1: Determine the TCI state of the PDSCH according to the TCI state of the CORESET with the smallest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) applied to the CORESET with the smallest ID (CORESET#1).

[0151] Method 4-2: Determine the TCI state of the PDSCH according to the TCI state of the CORESET with the largest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) applied to the CORESET with the largest ID (CORESET#2).

[0152] Method 5-1: Determine the TCI state of the PDSCH according to the TCI state (TCI#2) applied to the lowest frequency PRB (eg, the PRB with the lowest ID) in the frequency domain resources used to monitor the above-mentioned PDCCH.

[0153] Method 5-2: Determine the TCI state of the PDSCH according to the TCI state (TCI#1) applied to the highest frequency PRB (eg, the PRB with the highest ID) in the frequency domain resources used to monitor the above-mentioned PDCCH.

[0154] Figure 6 This is another schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH.

[0155] like Figure 6 As shown, the UE receives a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal). The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0156] In addition, the DCI corresponding to the PDCCH format does not include a TCI domain; the PDCCH includes two parts, namely PDCCH#rep1 and PDCCH#rep2, wherein PDCCH#rep1 and PDCCH#rep2 correspond to the same DCI bit; the search spaces corresponding to the PDCCH are SS#1 and SS#2, wherein SS#1 is located at the first symbol of time slot n, and SS#2 is located at the third symbol of time slot n, for example, the UE knows in advance that SS#1 and SS#2 are associated, SS#1 corresponds to the first SS, SS#2 corresponds to the second SS, and a repetition corresponding to the PDCCH can be received on these two SSs respectively; according to the configuration of RRC signaling, the search spaces SS#1 and SS#2 correspond to CORESET#2 and CORESET#1 respectively, for example, the RRC signaling indicates that CORESET#1 corresponds to the first CORESET, and CORESET#2 corresponds to the second CORESET; the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the third symbol of time slot n is TCI#2.

[0157] In this example, according to the method of the embodiment of the present application, the UE may determine that the PDSCH is associated with a TCI state according to the following method 1 or method 2:

[0158] Method 1: Before the UE receives the PDCCH and PDSCH, the UE receives an RRC signaling, and the UE determines that the PDSCH is associated with a TCI state according to the RRC signaling;

[0159] Method 2: The UE determines that the PDSCH is associated with a TCI state according to the TDRA field in the DCI format corresponding to the PDCCH.

[0160] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of the PDSCH according to the following method:

[0161] Method 1-1: Determine the TCI state of the PDSCH according to the first TCI state used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the first TCI state (TCI#1) activated by the MAC-CE for the CORESET#1.

[0162] Method 1-2: Determine the TCI state of the PDSCH according to the second TCI state used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the second TCI state (TCI#2) activated by the MAC-CE for the CORESET#1.

[0163] Method 2-1: Determine the TCI state of the PDSCH according to the TCI state with the smallest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state with the smallest ID (TCI#1) activated by MAC-CE for CORESET#1.

[0164] Method 2-2: Determine the TCI state of the PDSCH according to the TCI state with the largest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of the CORESET#1 corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state with the largest ID (TCI#2) activated by the MAC-CE for CORESET#1.

[0165] Method 3-1: Determine the TCI state of the PDSCH according to the TCI state of the first CORESET used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on the first CORESET of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) applied by CORESET#1.

[0166] Method 3-2: Determine the TCI state of the PDSCH according to the TCI state of the second CORESET used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on the second CORESET of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) applied by CORESET#2.

[0167] Method 4-1: Determine the TCI state of the PDSCH according to the TCI state of the CORESET with the smallest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on the one with the smaller ID of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#1) applied by CORESET#1.

[0168] Method 4-2: Determine the TCI state of the PDSCH according to the TCI state of the CORESET with the largest ID used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on the one with the larger ID of the two CORESETs corresponding to the PDCCH, and the TCI state of the PDSCH is determined by the TCI state (TCI#2) applied by CORESET#2.

[0169] Method 5-1: Determine the TCI state of the PDSCH according to the TCI state (TCI#1) applied to the earliest symbol for monitoring the PDCCH. For example, if the earliest symbol corresponding to the PDCCH monitoring is the first symbol of time slot n, the TCI state of the PDSCH is determined by the TCI state applied by the PDCCH on the symbol.

[0170] Method 5-2: Determine the TCI state of the PDSCH according to the TCI state (TCI#2) applied to the latest symbol for monitoring the PDCCH. For example, if the latest symbol corresponding to the PDCCH monitoring is the third symbol of time slot n, the TCI state of the PDSCH is determined by the TCI state applied by the PDCCH on the symbol.

[0171] In the above Figures 4 to 6 In the example of , PDCCH has repetition. Figure 4 In the example, there are two search space sets and one CORESET. Figure 5 In the example, there is a search space set and two CORESETs. Figure 6 In the example, there are two search space sets and two CORESETs.

[0172] Figure 7 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with multiple TCIs scheduled by the PDCCH.

[0173] like Figure 7 As shown, the UE receives a PDCCH (control information) associated with two TCI states in time slot n, and the PDCCH schedules a PDSCH (channel or signal). The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0174] In addition, the DCI format corresponding to the PDCCH does not include a TCI domain; the search space corresponding to the PDCCH is SS#1; the CORESET corresponding to the search space SS#1 is CORESET#1; CORESET#1 activates two TCI states by MAC-CE activation signaling, namely, TCI#1 and TCI#2, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, and the second TCI state activated by the MAC-CE activation signaling is TCI#2; the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the second symbol of time slot n is TCI#2.

[0175] In this example, according to the method of the embodiment of the present application, the UE may determine that the PDSCH is associated with two TCI states according to the following method 1 or method 2:

[0176] Method 1: Before the UE receives the PDCCH and PDSCH, the UE receives an RRC signaling, and the UE determines that the PDSCH is associated with two TCI states according to the RRC signaling;

[0177] Method 2: The UE determines that the PDSCH is associated with two TCI states according to the TDRA field in the DCI format corresponding to the PDCCH.

[0178] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of Rep#1 of the PDSCH according to the following method:

[0179] Method 1-1: Determine the TCI state of Rep#1 of PDSCH according to the first TCI state used to receive the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of CORESET#1 corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the first TCI state (TCI#1) activated by MAC-CE for CORESET#1.

[0180] Method 1-2: Determine the TCI state of Rep#1 of PDSCH according to the second TCI state for receiving the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of CORESET#1 corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the second TCI state (TCI#2) activated by MAC-CE for CORESET#1.

[0181] Method 2-1: Determine the TCI state of Rep#1 of PDSCH according to the TCI state of the minimum ID used to receive the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of CORESET#1 corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state (TCI#1) with the minimum ID activated by MAC-CE for CORESET#1.

[0182] Method 2-2: Determine the TCI state of Rep#1 of PDSCH according to the TCI state of the maximum ID used to receive the above PDCCH. For example, the reception of the above PDCCH is based on the TCI state of CORESET#1 corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state (TCI#2) with the largest ID activated by MAC-CE for CORESET#1.

[0183] Method 3-1: Determine the TCI state of Rep#1 of PDSCH according to the TCI state (TCI#1) applied to the earliest symbol for receiving the above PDCCH. For example, if the earliest symbol received by the above PDCCH is the first symbol of time slot n, the TCI state of Rep#1 of PDSCH is determined by the TCI state applied by PDCCH on this symbol.

[0184] Method 3-2: Determine the TCI state of Rep#1 of PDSCH according to the TCI state (TCI#2) applied to the latest symbol received by the PDCCH. For example, if the latest symbol received by the PDCCH is the second symbol of time slot n, the TCI state of Rep#1 of PDSCH is determined by the TCI state applied by the PDCCH on the symbol.

[0185] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of Rep#2 of the PDSCH according to the following method:

[0186] Since the TCI states corresponding to the above-mentioned PDCCH are TCI#1 and TCI#2, after the UE determines the TCI state of Rep#1 of PDSCH according to the above method, it can select the TCI state of Rep#1 that is not used for PDSCH between TCI#1 and TCI#2 as the TCI state of Rep#2 of PDSCH.

[0187] For example, if the TCI state of Rep#1 of the PDSCH is determined to be TCI#1 according to the aforementioned method 1-1, the TCI state of Rep#2 of the PDSCH is determined to be TCI#2.

[0188] For another example, if the TCI state of Rep#1 of the PDSCH is determined to be TCI#2 according to the aforementioned method 1-2, then the TCI state of Rep#2 of the PDSCH is determined to be TCI#1.

[0189] And so on, the explanation is omitted here.

[0190] exist Figure 7 In the example, PDCCH is not repeated, but PDSCH is repeated. And, Figure 7 The case of TDM is shown. The case of FDM is similar to TDM. Figure 3 The method is inferred by analogy, and the explanation is omitted here.

[0191] Figure 8 It is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a PDSCH of multiple TCIs scheduled by the PDCCH.

[0192] like Figure 8 As shown, the UE receives a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal). The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0193] In addition, the DCI format corresponding to the PDCCH does not include a TCI domain; the PDCCH includes two parts, namely PDCCH#rep1 and PDCCH#rep2, wherein PDCCH#rep1 and PDCCH#rep2 correspond to the same DCI bit; the search spaces corresponding to the PDCCH are SS#1 and SS#2, wherein SS#1 is located at the first symbol of time slot n, and SS#2 is located at the third symbol of time slot n. For example, the UE knows in advance that SS#1 and SS#2 are associated, SS#1 corresponds to the first SS, and SS#2 corresponds to the second SS. A repetition corresponding to the PDCCH can be received on these two SSs respectively; according to R In the configuration of RC signaling, the CORESETs corresponding to the search spaces SS#1 and SS#2 are both CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by the MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, wherein SS#2 corresponds to TCI#1; the second TCI state activated by the MAC-CE activation signaling is TCI#2, wherein SS#1 corresponds to TCI#2; in addition, the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the third symbol of time slot n is TCI#2.

[0194] In this example, according to the method of the embodiment of the present application, the UE may determine that the PDSCH is associated with two TCI states according to the following method 1 or method 2:

[0195] Method 1: Before the UE receives the PDCCH and PDSCH, the UE receives an RRC signaling, and the UE determines that the PDSCH is associated with two TCI states according to the RRC signaling;

[0196] Method 2: The UE determines that the PDSCH is associated with two TCI states according to the TDRA field in the DCI format corresponding to the PDCCH.

[0197] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of Rep#1 of the PDSCH according to the following method:

[0198] Method 1-1: Determine the TCI state of Rep#1 of PDSCH according to the first TCI state used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two TCI states of CORESET#1 corresponding to the PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the first TCI state (TCI#1) activated by MAC-CE for CORESET#1.

[0199] Method 1-2: Determine the TCI state of Rep#1 of PDSCH according to the second TCI state used to monitor the above PDCCH. For example, the monitoring of the above PDCCH is based on one of the two TCI states of CORESET#1 corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the second TCI state (TCI#2) activated by MAC-CE for CORESET#1.

[0200] Method 2-1: Determine the TCI state of Rep#1 of PDSCH according to the TCI state with the smallest ID used to monitor the above PDCCH. For example, the monitoring of the above PDCCH is based on one of the two TCI states of CORESET#1 corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state with the smallest ID (TCI#1) activated by MAC-CE for CORESET#1.

[0201] Method 2-2: Determine the TCI state of Rep#1 of PDSCH according to the TCI state with the largest ID used to monitor the above PDCCH. For example, the monitoring of the above PDCCH is based on one of the two TCI states of CORESET#1 corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state with the largest ID (TCI#2) activated by MAC-CE for CORESET#1.

[0202] Method 3-1: Determine the TCI state of Rep#1 of PDSCH according to the TCI state of the first SS used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two SSs corresponding to the PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state (TCI#2) of the first SS (SS#1) activated by MAC-CE for CORESET#1.

[0203] Method 3-2: Determine the TCI state of Rep#1 of PDSCH according to the TCI state of the second SS used to monitor the PDCCH. For example, the monitoring of the PDCCH is based on one of the two SSs corresponding to the PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state (TCI#1) of the second SS (SS#2) activated by MAC-CE for CORESET#1.

[0204] Method 4-1: Determine the TCI state of Rep#1 of PDSCH according to the TCI state of the SS with the smallest ID used to monitor the above PDCCH. For example, the monitoring of the above PDCCH is based on one of the two SSs corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state (TCI#2) of the SS with the smallest ID (SS#1) activated by MAC-CE for CORESET#1.

[0205] Method 4-2: Determine the TCI state of Rep#1 of PDSCH according to the TCI state of the SS with the largest ID used to monitor the above PDCCH. For example, the monitoring of the above PDCCH is based on one of the two SSs corresponding to the above PDCCH, and the TCI state of Rep#1 of PDSCH is determined by the TCI state (TCI#2) of the SS with the largest ID (SS#2) activated by MAC-CE for CORESET#1.

[0206] Method 5-1: Determine the TCI state of Rep#1 of PDSCH according to the TCI state (TCI#1) applied to the earliest symbol for monitoring the above PDCCH. For example, if the earliest symbol corresponding to the monitoring of the above PDCCH is the first symbol of time slot n, the TCI state of Rep#1 of PDSCH is determined by the TCI state applied by PDCCH on this symbol.

[0207] Method 5-2: Determine the TCI state of Rep#1 of PDSCH according to the TCI state (TCI#2) applied to the latest symbol for monitoring the above PDCCH. For example, if the latest symbol corresponding to the monitoring of the above PDCCH is the third symbol of time slot n, the TCI state of Rep#1 of PDSCH is determined by the TCI state applied by PDCCH on this symbol.

[0208] In this example, according to the method of the embodiment of the present application, the UE may determine the TCI state of Rep#2 of the PDSCH according to the following method:

[0209] Since the TCI states corresponding to the above-mentioned PDCCH are TCI#1 and TCI#2, after the UE determines the TCI state of Rep#1 of PDSCH according to the above method, it can select the TCI state of Rep#1 that is not used for PDSCH between TCI#1 and TCI#2 as the TCI state of Rep#2 of PDSCH.

[0210] For example, if the TCI state of Rep#1 of the PDSCH is determined to be TCI#1 according to the aforementioned method 1-1, the TCI state of Rep#2 of the PDSCH is determined to be TCI#2.

[0211] For another example, if the TCI state of Rep#1 of the PDSCH is determined to be TCI#2 according to the aforementioned method 1-2, then the TCI state of Rep#2 of the PDSCH is determined to be TCI#1.

[0212] And so on, the explanation is omitted here.

[0213] exist Figure 8 In the example, both PDCCH and PDSCH are repeated. And, Figure 8 The case of two search space sets and one CORESET is shown. The case of one search space set and two CORESETs and the case of two search space sets and two CORESETs are similar to the case of two search space sets and one CORESET. Figure 5 and Figure 6 The method is inferred by analogy, and the explanation is omitted here.

[0214] It is worth noting that the above Figure 1 The embodiments of the present application are only schematically described, but the present application is not limited thereto. For example, the execution order of the various operations can be appropriately adjusted, and other operations can be added or some operations can be reduced. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the above appended claims. Figure 1 Records of.

[0215] According to the method of the embodiment of the present application, as described above, the ambiguity of the TCI status of the above-mentioned channel or signal can be avoided, and the overhead generated by indicating the TCI status of the channel or signal in the control information can be reduced.

[0216] Embodiments of the second aspect

[0217] An embodiment of the present application provides a wireless communication method, which is described from the perspective of a network device.

[0218] Fig. 9 is a schematic diagram of a wireless communication method according to an embodiment of the present application, such as Fig. 9 As shown, the method includes:

[0219] 901: A network device sends control information, where the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0220] In the embodiment of the present application, if the control information is related to two TCI states, the DCI format corresponding to the control information includes a TCI field.

[0221] In an embodiment of the present application, the control information triggers a channel or signal. The channel or signal may be a downlink channel or signal, such as PDSCH or CSI-RS; or an uplink channel or signal, such as PUSCH, PUCCH and / or SRS. The present application is not limited thereto.

[0222] In an embodiment of the present application, the TCI state of the channel or signal is indicated by the TCI field of the DCI format corresponding to the control information. For example, the TCI field is used to indicate whether the channel or signal is associated with one TCI state or two TCI states.

[0223] According to the method of the embodiment of the present application, when a control information triggers a channel or a signal, if the control information is associated with two TCI states, the control information includes a TCI domain. Through this method, the above control information can always include a TCI domain, and the TCI state of the signal or channel triggered by the control information is indicated by the TCI domain it contains, thereby clarifying the TCI state of the signal or channel, and making the indication of the TCI state of the signal or channel more flexible.

[0224] In some embodiments, the control information being related to two TCI states means that the sending of the control information is related to the two TCI states.

[0225] In some embodiments, the DCI format corresponding to the control information includes a TCI domain, which means that: the network device sets the parameter tci-PresentInDCI of a control resource set associated with the DCI format to enable; or, the network device sets the parameter tci-PresentInDCI of all control resource sets associated with the DCI format to enable; or, the network device configures the parameter tci-PresentInDCI-ForFormat1_2 of a control resource set associated with the DCI format; or, the network device configures the parameter tci-PresentInDCI-ForFormat1_2 of all control resource sets associated with the DCI format.

[0226] For example, the above condition can be described in English as:

[0227]

[0228] The method of the embodiment of the present application is explained below through several specific examples.

[0229] Fig.10It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH. Fig.10 The description is made from the perspective of base station transmission, and PDSCH is taken as an example.

[0230] like Fig.10 As shown, the gNB sends a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal), which is associated with a TCI state. The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0231] In addition, the DCI format corresponding to the PDCCH includes a TCI field. For example, the DCI format is DCI format1_1, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentInDCI. And tci-PresentInDCI is set to 'enable'; for another example, the DCI format is DCI format 1_2, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentForDCI-Format1-2.

[0232] In addition, the TCI code point indicated by the TCI field of the PDCCH includes a TCI state, namely, TCI#3.

[0233] In addition, the search space corresponding to the PDCCH is SS#1; the CORESET corresponding to the search space SS#1 is CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by the MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, and the second TCI state activated by the MAC-CE activation signaling is TCI#2; in addition, the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the second symbol of time slot n is TCI#2.

[0234] In this example, when the gNB sends a DCI format for scheduling PDSCH and the DCI format is associated with two TCI states (or, the DCI format is sent via two TRPs), in order to avoid the TCI state of the PDSCH scheduled by the DCI format being unclear, the DCI format must contain a TCI field. And, in this example, the TCI field indicates a TCI state, which is the TCI state applied to the PDSCH scheduled by the DCI format, that is, TCI#3.

[0235] Fig.11 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with multiple TCIs scheduled by the PDCCH. Fig.11 The description is made from the perspective of base station transmission, and PDSCH is taken as an example.

[0236] like Fig.11 As shown, the gNB sends a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal), which is associated with a TCI state. The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0237] In addition, the DCI format corresponding to the PDCCH includes a TCI field. For example, the DCI format is DCI format1_1, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentInDCI. And tci-PresentInDCI is set to 'enable'; for another example, the DCI format is DCI format 1_2, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentForDCI-Format1-2.

[0238] In addition, the TCI code point indicated by the TCI field of the PDCCH includes two TCI states, namely, TCI#3 and TCI#4.

[0239] In addition, the search space corresponding to the PDCCH is SS#1; the CORESET corresponding to the search space SS#1 is CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by the MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, and the second TCI state activated by the MAC-CE activation signaling is TCI#2; in addition, the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the second symbol of time slot n is TCI#2.

[0240] In this example, when the gNB sends a DCI format for scheduling PDSCH and the DCI format is associated with two TCI states (or, the DCI format is sent via two TRPs), in order to avoid the TCI state of the PDSCH scheduled by the DCI format being unclear, the DCI format must contain a TCI field. And, in this example, the TCI field indicates two TCI states, which are the TCI states applied to the PDSCH scheduled by the DCI format, namely TCI#3 and TCI#4.

[0241] It is worth noting that the above Fig. 9 The embodiments of the present application are only schematically described, but the present application is not limited thereto. For example, other operations may be added, or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the above attached embodiments. Fig. 9 Records of.

[0242] According to the method of the embodiment of the present application, as described above, when the control information is associated with two TCI states, the TCI state of the signal or channel indicated by the control information is clarified, and the indication of the TCI state of the signal or channel is made more flexible.

[0243] Embodiments of the third aspect

[0244] The embodiment of the present application provides a wireless communication method, which is described from the terminal device side. The method is a process on the terminal device side corresponding to the method of the embodiment of the second aspect, wherein the same contents as the embodiment of the second aspect are not repeated.

[0245] Fig.12 is a schematic diagram of a wireless communication method according to an embodiment of the present application, such as Fig.12 As shown, the method includes:

[0246] 1201: The terminal device receives control information, where the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0247] In the embodiment of the present application, if the control information is related to two TCI states, the DCI format corresponding to the control information includes a TCI field.

[0248] In an embodiment of the present application, the control information triggers a channel or signal. The channel or signal may be a downlink channel or signal, such as PDSCH or CSI-RS; or an uplink channel or signal, such as PUSCH, PUCCH and / or SRS. The present application is not limited thereto.

[0249] In an embodiment of the present application, the TCI state of the channel or signal is indicated by the TCI field of the DCI format corresponding to the control information. For example, the TCI field is used to indicate whether the channel or signal is associated with one TCI state or two TCI states.

[0250] According to the method of the embodiment of the present application, when a control information triggers a channel or a signal, if the control information is associated with two TCI states, the control information includes a TCI domain. Through this method, the above control information can always include a TCI domain, and the TCI state of the signal or channel triggered by the control information is indicated by the TCI domain it contains, thereby clarifying the TCI state of the signal or channel, and making the indication of the TCI state of the signal or channel more flexible.

[0251] In some embodiments, control information being related to two TCI states means that reception or monitoring of the control information is associated with two TCI states.

[0252] In some embodiments, the DCI format corresponding to the control information includes a TCI domain, which means that: the terminal device expects that the parameter tci-PresentInDCI of a control resource set associated with the DCI format is set to enabled; or, the terminal device expects that the parameter tci-PresentInDCI of all control resource sets associated with the DCI format are set to enabled; or, the terminal device expects that the parameter tci-PresentInDCI-ForFormat1_2 of a control resource set associated with the DCI format is configured; or, the terminal device expects that the parameter tci-PresentInDCI-ForFormat1_2 of all control resource sets associated with the DCI format are configured.

[0253] For example, the above condition can be described in English as:

[0254]

[0255] The method of the embodiment of the present application is explained below through several specific examples.

[0256] Fig.13 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with a single TCI scheduled by the PDCCH. Fig.13 It is described from the perspective of terminal equipment (UE) reception and takes PDSCH as an example.

[0257] like Fig.13 As shown, the UE receives a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal), and the PDSCH is associated with a TCI state. The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0258] In addition, the DCI format corresponding to the PDCCH includes a TCI field. For example, the DCI format is DCI format1_1, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentInDCI. And tci-PresentInDCI is set to 'enable'; for another example, the DCI format is DCI format 1_2, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentForDCI-Format1-2.

[0259] In addition, the TCI code point indicated by the TCI field of the PDCCH includes a TCI state, namely, TCI#3.

[0260] In addition, the search space corresponding to the PDCCH is SS#1; the CORESET corresponding to the search space SS#1 is CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by the MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, and the second TCI state activated by the MAC-CE activation signaling is TCI#2; in addition, the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the second symbol of time slot n is TCI#2.

[0261] In this example, when the UE receives a DCI format that schedules a PDSCH and the DCI format is associated with two TCI states (or, the DCI format passes through two TRPs), the DCI format must contain a TCI field. In other words, the UE expects that the DCI format contains a TCI field. And, in this example, the TCI field indicates a TCI state, which is the TCI state applied to the PDSCH scheduled by the DCI format, that is, TCI#3.

[0262] Fig.14 It is a schematic diagram of the mapping relationship between the TCI state of the PDCCH and the TCI state of the PDSCH with multiple TCIs scheduled by the PDCCH. Fig.14 It is described from the perspective of terminal equipment (UE) reception and takes PDSCH as an example.

[0263] like Fig.14 As shown, the UE receives a PDCCH (control information) in time slot n, and the PDCCH schedules a PDSCH (channel or signal), and the PDSCH is associated with a TCI state. The scheduling offset between the PDCCH and the PDSCH is greater than or equal to timeDurationForQCL. In this example, assuming SCS = 60kHz, the corresponding UE capability timeDurationForQCL is 7 symbols.

[0264] In addition, the DCI format corresponding to the PDCCH includes a TCI field. For example, the DCI format is DCI format1_1, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentInDCI. And tci-PresentInDCI is set to 'enable'; for another example, the DCI format is DCI format 1_2, and the CORESET (CORESET#1) corresponding to the DCI format is configured with an IE, namely, tci-PresentForDCI-Format1-2.

[0265] In addition, the TCI code point indicated by the TCI field of the PDCCH includes two TCI states, namely, TCI#3 and TCI#4.

[0266] In addition, the search space corresponding to the PDCCH is SS#1; the CORESET corresponding to the search space SS#1 is CORESET#1; the CORESET#1 activates two TCI states, namely TCI#1 and TCI#2, by the MAC-CE activation signaling, wherein the first TCI state activated by the MAC-CE activation signaling is TCI#1, and the second TCI state activated by the MAC-CE activation signaling is TCI#2; in addition, the TCI state applied to the first symbol of time slot n is TCI#1, and the TCI state applied to the second symbol of time slot n is TCI#2.

[0267] In this example, when the UE receives a DCI format that schedules PDSCH and the DCI format is associated with two TCI states (or, the DCI format is via two TRPs), the DCI format must contain a TCI field. In other words, the UE expects that the DCI format contains a TCI field. And, in this example, the TCI field indicates two TCI states, which are the TCI states applied to the PDSCH scheduled by the DCI format, namely TCI#3 and TCI#4.

[0268] It is worth noting that the above Fig.12 The embodiments of the present application are only schematically described, but the present application is not limited thereto. For example, other operations may be added, or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above content, and are not limited to the above attached embodiments. Fig.12 Records of.

[0269] According to the method of the embodiment of the present application, as described above, when the control information is associated with two TCI states, the TCI state of the signal or channel indicated by the control information is clarified, and the indication of the TCI state of the signal or channel is made more flexible.

[0270] Embodiments of the fourth aspect

[0271] An embodiment of the present application provides a wireless communication device, which may be, for example, a terminal device, or may be one or more components or assemblies configured in the terminal device.

[0272] Fig.15 It is a schematic diagram of a wireless communication device of an embodiment of the present application. Since the principle of solving the problem by the device is similar to the method of the embodiment of the first aspect, its specific implementation can refer to the implementation of the method of the embodiment of the first aspect, and the same contents will not be repeated.

[0273] like Fig.15 As shown, the wireless communication device 1500 of the embodiment of the present application includes:

[0274] A receiving unit 1501 receives control information, wherein the control information triggers a channel or a signal, the reception or monitoring of the control information is related to two TCI states, and the DCI format corresponding to the control information does not include a TCI field;

[0275] The processing unit 1502 sends or receives the channel or signal according to the two TCI states or according to one of the two TCI states.

[0276] In an embodiment of the present application, the channel or signal is a downlink channel or signal or an uplink channel or signal; the downlink channel or signal is PDSCH or CSI-RS, and the uplink channel or signal is at least one of PUSCH, PUCCH and SRS.

[0277] In some embodiments, one of the two TCI states refers to at least one of the following:

[0278] A first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the control information;

[0279] The TCI state of the lowest ID among the TCI states of the control resource set (CORESET) for receiving or monitoring the control information;

[0280] A TCI state applied by a first control resource set indicated by RRC signaling in two control resource sets for receiving or monitoring the control information;

[0281] a TCI state applied by the control resource set with the lowest ID of the two control resource sets for receiving or monitoring the control information;

[0282] Used to receive or monitor the TCI state corresponding to the first search space set indicated by RRC signaling in the two search space sets of the control information;

[0283] A TCI state corresponding to a search space set with a lowest ID in two search space sets for receiving or monitoring the control information;

[0284] The TCI state applied by the time-frequency resources used to receive or monitor the control information.

[0285] In some embodiments, the time-frequency resource used for receiving or monitoring the control information is one of the following:

[0286] the earliest symbol used for reception or monitoring of said control information;

[0287] The PRB of the lowest index used for receiving or monitoring the control information;

[0288] The PRB with the lowest index in the earliest symbol used for reception or monitoring of the control information.

[0289] In some embodiments, the channel or signal is a PDSCH; and the PDSCH is associated with a first TCI state, wherein the first TCI state refers to at least one of the following:

[0290] A first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the control information;

[0291] The TCI state of the lowest ID among the TCI states of the control resource set (CORESET) for receiving or monitoring the control information;

[0292] A TCI state applied by a first control resource set indicated by RRC signaling in two control resource sets for receiving or monitoring the control information;

[0293] a TCI state applied by the control resource set with the lowest ID of the two control resource sets for receiving or monitoring the control information;

[0294] Used to receive or monitor the TCI state corresponding to the first search space set indicated by RRC signaling in the two search space sets of the control information;

[0295] A TCI state corresponding to a search space set with a lowest ID in two search space sets for receiving or monitoring the control information;

[0296] The TCI state applied by the time-frequency resources used to receive or monitor the control information.

[0297] In some embodiments, the time-frequency resource used for receiving or monitoring the control information is one of the following:

[0298] the earliest symbol used for reception or monitoring of said control information;

[0299] The PRB of the lowest index used for receiving or monitoring the control information;

[0300] The PRB with the lowest index in the earliest symbol used for reception or monitoring of the control information.

[0301] In some embodiments, the PDSCH is further associated with a second TCI state, where the second TCI state refers to: a TCI state of the two TCI states except the first TCI state.

[0302] In some embodiments, the processing unit 1502 determines, according to RRC signaling or the DCI field of the DCI format, to send or receive the channel or signal according to the two TCI states.

[0303] In some embodiments, the processing unit 1502 determines, according to RRC signaling or the DCI field of the DCI format, to send or receive the channel or signal according to one of the two TCI states.

[0304] In some embodiments, the DCI field of the DCI format is the TDRA field of the DCI format.

[0305] In some embodiments, the RRC signaling is used to indicate whether the channel or signal is associated with one TCI state or two TCI states. Thus, the terminal device determines, based on the RRC signaling, whether to send or receive the channel or signal according to the two TCI states or to send or receive the channel or signal according to one of the two TCI states.

[0306] In some embodiments, a time offset between the control information and the channel or signal is greater than or equal to a pre-determined time period.

[0307] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The wireless communication device 1500 of the present application embodiment may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

[0308] Furthermore, for simplicity, Fig.15 The connection relationship or signal direction between the various components or modules is only exemplified, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the implementation of this application is not limited to this.

[0309] According to the device of the embodiment of the present application, the same as the embodiment of the first aspect, it is possible to avoid the ambiguity of the TCI status of the above-mentioned channel or signal, and to reduce the overhead generated by indicating the TCI status of the channel or signal in the control information.

[0310] Embodiments of the fifth aspect

[0311] An embodiment of the present application provides a wireless communication device, which may be, for example, a network device, or may be one or more parts or components configured in the network device.

[0312] Fig.16 It is a schematic diagram of a wireless communication device of an embodiment of the present application. Since the principle of solving the problem by the device is similar to the method of the embodiment of the second aspect, its specific implementation can refer to the implementation of the method of the embodiment of the second aspect, and the same contents will not be repeated.

[0313] like Fig.16 As shown, the wireless communication device 1600 of the embodiment of the present application includes:

[0314] The sending unit 1601 sends control information, where the control information is related to two TCI states, and the DCI format corresponding to the control information includes a TCI field.

[0315] In some embodiments, if the control information is related to two TCI states, the DCI format corresponding to the control information includes a TCI field.

[0316] In some embodiments, the control information triggers a channel or a signal.

[0317] In an embodiment of the present application, the channel or signal is a downlink channel or signal or an uplink channel or signal; the downlink channel or signal is PDSCH or CSI-RS, and the uplink channel or signal is at least one of PUSCH, PUCCH and SRS.

[0318] In some embodiments, the TCI state of the channel or signal is indicated by the TCI field. For example, the TCI field is used to indicate whether the channel or signal is associated with one TCI state or two TCI states.

[0319] In some embodiments, the control information being related to two TCI states means that the sending of the control information is related to two TCI states.

[0320] In some embodiments, the DCI format corresponding to the control information includes a TCI field, which refers to one of the following:

[0321] The network device sets a parameter tci-PresentInDCI of a control resource set associated with the DCI format to enable;

[0322] The network device sets the parameter tci-PresentInDCI of all control resource sets associated with the DCI format to be enabled;

[0323] The network device configures a parameter tci-PresentInDCI-ForFormat1_2 of a control resource set associated with the DCI format;

[0324] The network device configures the parameter tci-PresentInDCI-ForFormat1_2 of all control resource sets associated with the DCI format.

[0325] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The uplink data transmission indication device 1600 of the present application embodiment may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

[0326] Furthermore, for simplicity, Fig.16The connection relationship or signal direction between the various components or modules is only exemplified, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the implementation of this application is not limited to this.

[0327] According to an embodiment of the present application, similar to the embodiment of the second aspect, when the control information is associated with two TCI states, the TCI state of the signal or channel indicated by the control information is clarified, and the indication of the TCI state of the signal or channel is made more flexible.

[0328] Embodiments of the sixth aspect

[0329] An embodiment of the present application provides a wireless communication device, which may be, for example, a terminal device, or may be one or more components or assemblies configured in the terminal device.

[0330] Fig.17 It is a schematic diagram of a wireless communication device of an embodiment of the present application. Since the principle of solving the problem by the device is similar to the method of the embodiment of the third aspect, its specific implementation can refer to the implementation of the method of the embodiment of the third aspect, and the same contents will not be repeated.

[0331] like Fig.17 As shown, the wireless communication device 1700 of the embodiment of the present application includes:

[0332] The receiving unit 1701 receives control information, where the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0333] In some embodiments, if the control information is related to two TCI states, the DCI format corresponding to the control information includes a TCI field.

[0334] In some embodiments, the control information triggers a channel or a signal.

[0335] In an embodiment of the present application, the channel or signal is a downlink channel or signal or an uplink channel or signal; the downlink channel or signal is PDSCH or CSI-RS, and the uplink channel or signal is at least one of PUSCH, PUCCH and SRS.

[0336] In some embodiments, the TCI state of the channel or signal is indicated by the TCI field. For example, the TCI field is used to indicate whether the channel or signal is associated with one TCI state or two TCI states.

[0337] In some embodiments, the control information being related to two TCI states means that the receiving or monitoring of the control information is associated with two TCI states.

[0338] In some embodiments, the DCI format includes a TCI field, which refers to one of the following:

[0339] The terminal device expects that a parameter tci-PresentInDCI of a control resource set associated with the DCI format is set to enabled;

[0340] The terminal device expects that the parameter tci-PresentInDCI of all control resource sets associated with the DCI format are set to enabled.

[0341] The terminal device expects that a parameter tci-PresentInDCI-ForFormat1_2 of a control resource set associated with the DCI format is configured;

[0342] The terminal device expects that the parameter tci-PresentInDCI-ForFormat1_2 of all control resource sets associated with the DCI format are configured.

[0343] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The uplink data transmission indication device 1700 of the present application embodiment may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

[0344] Furthermore, for simplicity, Fig.17 The connection relationship or signal direction between the various components or modules is only exemplified, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the implementation of this application is not limited to this.

[0345] According to an embodiment of the present application, similar to the embodiment of the third aspect, when the control information is associated with two TCI states, the TCI state of the signal or channel indicated by the control information is clarified, and the indication of the TCI state of the signal or channel is made more flexible.

[0346] Embodiment of the seventh aspect

[0347] The present application embodiment provides a communication system, Fig.18 is a schematic diagram of a communication system according to an embodiment of the present application. Fig.18As shown, the communication system 1800 includes a network device 1801 and a terminal device 1802. For simplicity, Fig.18 Only one terminal device and one network device are taken as an example for description, but the embodiments of the present application are not limited to this.

[0348] In the embodiment of the present application, existing services or future implementable services can be transmitted between the network device 1801 and the terminal device 1802. For example, these services may include but are not limited to: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), highly reliable and low latency communication (URLLC) and vehicle-to-everything (V2X) communication, etc.

[0349] In some embodiments, the network device 1801 generates control information and sends the control information to the terminal device 1802; the terminal device 1802 receives the control information, the control information triggers a channel or signal, the reception or monitoring of the control information is related to two TCI states, and the DCI format corresponding to the control information does not include a TCI field, and the terminal device 1802 sends or receives the channel or signal according to the two TCI states or according to one of the two TCI states. This application does not limit the relevant content of the network device 1801. The relevant content of the terminal device 1802 is the same as the embodiments of the first and fourth aspects, and the description is omitted here.

[0350] In some embodiments, the network device 1801 generates control information and sends the control information to the terminal device 1802, the control information is related to two TCI states, and the DCI format corresponding to the control information includes a TCI field; the terminal device 1802 receives the control information. The relevant content of the network device 1801 is the same as that of the embodiments of the second and fifth aspects, and the description is omitted here. The relevant content of the terminal device 1802 is the same as that of the embodiments of the third and sixth aspects, and the description is omitted here.

[0351] An embodiment of the present application further provides a terminal device, which may be, for example, a UE, but the present application is not limited thereto and may also be other devices.

[0352] Fig.19 Schematic diagram of a terminal device according to an embodiment of the present application. Fig.19 As shown, the terminal device 1900 may include a processor 1901 and a memory 1902; the memory 1902 stores data and programs and is coupled to the processor 1901. It is worth noting that this figure is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0353] For example, the processor 1901 may be configured to execute a program to implement the wireless communication method as described in the embodiments of the first aspect or the third aspect.

[0354] like Fig.19 As shown, the terminal device 1900 may also include: a communication module 1903, an input unit 1904, a display 1905, and a power supply 1906. The functions of the above components are similar to those of the prior art and are not described here. It is worth noting that the terminal device 1900 does not necessarily include Fig.19 All components shown in the figure are not necessary; in addition, the terminal device 1900 may also include Fig.19 For components not shown, reference may be made to the prior art.

[0355] An embodiment of the present application also provides a network device, which may be, for example, a base station (gNB), but the present application is not limited thereto and may also be other network devices.

[0356] Fig. 20 Schematic diagram of a network device according to an embodiment of the present application. Fig. 20 As shown, the network device 2000 may include: a processor (e.g., a central processing unit CPU) 2001 and a memory 2002; the memory 2002 is coupled to the processor 2001. The memory 2002 may store various data; in addition, it may store information processing programs, and execute the programs under the control of the central processing unit 2001.

[0357] For example, the processor 2001 may be configured to execute a program to implement the wireless communication method as described in the embodiment of the second aspect.

[0358] In addition, if Fig. 20 As shown, the network device 2000 may also include: a transceiver 2003 and an antenna 2004, etc.; wherein the functions of the above components are similar to those of the prior art and are not described in detail here. It is worth noting that the network device 2000 does not necessarily have to include Fig. 20 In addition, the network device 2000 may also include Fig. 20 For components not shown, reference may be made to the prior art.

[0359] An embodiment of the present application also provides a computer-readable program, wherein when the program is executed in a terminal device, the program enables a computer to execute the method described in the embodiment of the first aspect or the third aspect in the terminal device.

[0360] An embodiment of the present application further provides a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the method described in the embodiment of the first aspect or the third aspect in a terminal device.

[0361] An embodiment of the present application also provides a computer-readable program, wherein when the program is executed in a network device, the program enables a computer to execute the method described in the embodiment of the second aspect in the network device.

[0362] An embodiment of the present application further provides a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the method described in the embodiment of the second aspect in a network device.

[0363] The above devices and methods of the present application can be implemented by hardware, or by hardware combined with software. The present application relates to such a computer-readable program, which, when executed by a logic component, enables the logic component to implement the above-mentioned devices or components, or enables the logic component to implement the various methods or steps described above. The logic component is, for example, a field programmable logic component, a microprocessor, a processor used in a computer, etc. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0364] The method / device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and / or one or more combinations of the functional block diagrams may correspond to various software modules of the computer program flow or to various hardware modules. These software modules may correspond to the various steps shown in the figure, respectively. These hardware modules may be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0365] The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in a memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0366] For one or more of the functional blocks described in the drawings and / or one or more combinations of functional blocks, it can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any appropriate combination thereof for performing the functions described in the present application. For one or more of the functional blocks described in the drawings and / or one or more combinations of functional blocks, it can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0367] The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.

[0368] Regarding the above implementation methods disclosed in this embodiment, the following additional notes are also disclosed:

[0369] 1. A wireless communication method, wherein the method comprises:

[0370] The terminal device receives control information, the control information triggers a channel or signal, the reception or monitoring of the control information is related to two TCI states, and the DCI format corresponding to the control information does not include a TCI field;

[0371] The terminal device sends or receives the channel or signal according to the two TCI states or according to one of the two TCI states.

[0372] 2. The method according to Note 1, wherein one of the two TCI states refers to at least one of the following:

[0373] A first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the control information;

[0374] The TCI state of the lowest ID among the TCI states of the control resource set (CORESET) for receiving or monitoring the control information;

[0375] A TCI state applied by a first control resource set indicated by RRC signaling in two control resource sets for receiving or monitoring the control information;

[0376] a TCI state applied by the control resource set with the lowest ID of the two control resource sets for receiving or monitoring the control information;

[0377] Used to receive or monitor the TCI state corresponding to the first search space set indicated by RRC signaling in the two search space sets of the control information;

[0378] A TCI state corresponding to a search space set with a lowest ID in two search space sets for receiving or monitoring the control information;

[0379] The TCI state applied by the time-frequency resources used to receive or monitor the control information.

[0380] 3. The method according to Note 2, wherein the time-frequency resource used for receiving or monitoring the control information is one of the following:

[0381] the earliest symbol used for reception or monitoring of said control information;

[0382] The PRB of the lowest index used for receiving or monitoring the control information;

[0383] The PRB with the lowest index in the earliest symbol used for reception or monitoring of the control information.

[0384] 4. The method according to Note 1, wherein the channel or signal is a PDSCH; and the PDSCH is associated with a first TCI state, and the first TCI state refers to at least one of the following:

[0385] A first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the control information;

[0386] The TCI state of the lowest ID among the TCI states of the control resource set (CORESET) for receiving or monitoring the control information;

[0387] A TCI state applied by a first control resource set indicated by RRC signaling in two control resource sets for receiving or monitoring the control information;

[0388] a TCI state applied by the control resource set with the lowest ID of the two control resource sets for receiving or monitoring the control information;

[0389] Used to receive or monitor the TCI state corresponding to the first search space set indicated by RRC signaling in the two search space sets of the control information;

[0390] A TCI state corresponding to a search space set with a lowest ID in two search space sets for receiving or monitoring the control information;

[0391] The TCI state applied by the time-frequency resources used to receive or monitor the control information.

[0392] 5. The method according to Note 4, wherein the time-frequency resource used for receiving or monitoring the control information is one of the following:

[0393] the earliest symbol used for reception or monitoring of said control information;

[0394] The PRB of the lowest index used for receiving or monitoring the control information;

[0395] The PRB with the lowest index in the earliest symbol used for reception or monitoring of the control information.

[0396] 6. The method according to Note 4, wherein the PDSCH is also associated with a second TCI state, and the second TCI state refers to:

[0397] The two TCI states, a TCI state other than the first TCI state.

[0398] 7. The method according to Note 1, wherein the terminal device determines whether to send or receive the channel or signal according to the two TCI states based on RRC signaling or the DCI field of the DCI format.

[0399] 8. The method according to Note 1, wherein the terminal device determines to send or receive the channel or signal according to one of the two TCI states based on RRC signaling or the DCI field of the DCI format.

[0400] 9. The method according to Note 7 or 8, wherein the DCI field of the DCI format is the TDRA field of the DCI format.

[0401] 10. The method according to Note 7 or 8, wherein the RRC signaling is used to indicate whether the channel or signal is related to one TCI state or two TCI states.

[0402] 11. The method according to Note 1, wherein the time offset between the control information and the channel or signal is greater than or equal to a pre-determined time period.

[0403] 12. A method according to any one of Notes 1 to 3, 7 to 11, wherein the channel or signal is a downlink channel or signal or an uplink channel or signal; the downlink channel or signal is PDSCH or CSI-RS, and the uplink channel or signal is at least one of PUSCH, PUCCH and SRS.

[0404] 13. A wireless communication method, wherein the method comprises:

[0405] The network device sends control information, where the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0406] 14. The method according to Note 13, wherein, if the control information is related to two TCI states, the DCI format corresponding to the control information includes a TCI field.

[0407] 15. The method according to Note 13 or 14, wherein the control information triggers a channel or a signal.

[0408] 16. The method according to Note 13 or 14, wherein the control information is related to two TCI states:

[0409] The sending of the control information is related to two TCI states.

[0410] 17. The method according to Note 13 or 14, wherein the DCI format corresponding to the control information includes a TCI field, which means:

[0411] The network device sets the parameter tci-PresentInDCI of a control resource set associated with the DCI format to be enabled.

[0412] 18. The method according to Note 13 or 14, wherein the DCI format corresponding to the control information includes a TCI field, which means:

[0413] The network device sets the parameter tci-PresentInDCI of all control resource sets associated with the DCI format to be enabled.

[0414] 19. The method according to Note 13 or 14, wherein the DCI format corresponding to the control information includes a TCI field, which means:

[0415] The network device configures a parameter tci-PresentInDCI-ForFormat1_2 of a control resource set associated with the DCI format.

[0416] 20. The method according to Note 13 or 14, wherein the DCI format corresponding to the control information includes a TCI field, which means:

[0417] The network device configures the parameter tci-PresentInDCI-ForFormat1_2 of all control resource sets associated with the DCI format.

[0418] 21. The method according to Note 15, wherein the channel or signal is a downlink channel or signal or an uplink channel or signal; the downlink channel or signal is PDSCH or CSI-RS, and the uplink channel or signal is at least one of PUSCH, PUCCH and SRS.

[0419] 22. The method according to Note 15, wherein the TCI status of the channel or signal is indicated by the TCI field.

[0420] 23. The method according to Note 22, wherein the channel or signal is associated with one TCI state or two TCI states.

[0421] 24. A wireless communication method, wherein the method comprises:

[0422] The terminal device receives control information, where the control information is related to two TCI states, and a DCI format corresponding to the control information includes a TCI field.

[0423] 25. The method according to Note 24, wherein, if the control information is related to two TCI states, the DCI format corresponding to the control information includes a TCI field.

[0424] 26. The method according to Note 24, wherein the control information triggers a channel or a signal.

[0425] 27. The method according to Note 24, wherein the control information is related to two TCI states, which means that the reception or monitoring of the control information is associated with two TCI states.

[0426] 28. The method according to Note 24, wherein the DCI format includes a TCI domain, which means that the terminal device expects that a parameter tci-PresentInDCI of a control resource set associated with the DCI format is set to enabled.

[0427] 29. The method according to Note 24, wherein the DCI format includes a TCI domain, which means that the terminal device expects that the parameter tci-PresentInDCI of all control resource sets associated with the DCI format are set to enabled.

[0428] 30. The method according to Note 24, wherein the DCI format includes a TCI domain, which means that the terminal device expects the parameter tci-PresentInDCI-ForFormat1_2 of a control resource set associated with the DCI format to be configured.

[0429] 31. The method according to Note 24, wherein the DCI format includes a TCI domain, which means that the terminal device expects that the parameter tci-PresentInDCI-ForFormat1_2 of all control resource sets associated with the DCI format are configured.

[0430] 32. A terminal device comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method as described in any one of Notes 1 to 12 and 24 to 31.

[0431] 33. A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method as described in any one of Notes 13 to 23.

[0432] 34. A communication system, comprising a terminal device and a network device, wherein:

[0433] The terminal device is configured to execute the method described in any one of Notes 24 to 31, and the network device is configured to execute the method described in any one of Notes 13 to 23; or

[0434] The terminal device is configured to execute the method described in any one of Notes 1 to 12.

Claims

1. A wireless communication device, configured in a terminal device, wherein: The device comprises: A receiver, receiving control information, the control information triggering a physical downlink shared channel, the reception or monitoring of the control information being associated with two TCI states, and the DCI format corresponding to the control information not including a TCI field; a processor, configured to send or receive the physical downlink shared channel according to the two TCI states or according to one of the two TCI states; Wherein, one of the two TCI states refers to at least one of the following: A first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the control information; a TCI state applied by the control resource set with the lowest ID of the two control resource sets for receiving or monitoring the control information; The time offset between the control information and the physical downlink shared channel is greater than or equal to a pre-determined time period.

2. The device according to claim 1, wherein: The time-frequency resource used for receiving or monitoring the control information is one of the following: the earliest symbol used for reception or monitoring of said control information; The PRB of the lowest index used for receiving or monitoring the control information; The PRB with the lowest index in the earliest symbol used for reception or monitoring of the control information.

3. The device according to claim 1, wherein: The physical downlink shared channel is associated with a first TCI state, where the first TCI state refers to at least one of the following: A first TCI state indicated by a MAC-CE command in a TCI state of a control resource set (CORESET) for receiving or monitoring the control information; A TCI state of the lowest ID among the TCI states of a control resource set (CORESET) for receiving or monitoring the control information; A TCI state applied by a first control resource set indicated by RRC signaling in two control resource sets for receiving or monitoring the control information; a TCI state applied by the control resource set with the lowest ID of the two control resource sets for receiving or monitoring the control information; Used to receive or monitor the TCI state corresponding to the first search space set indicated by RRC signaling in the two search space sets of the control information; A TCI state corresponding to a search space set with a lowest ID in two search space sets for receiving or monitoring the control information; The TCI state applied by the time-frequency resources used to receive or monitor the control information.

4. The device according to claim 3, wherein: The time-frequency resource used for receiving or monitoring the control information is one of the following: the earliest symbol used for reception or monitoring of said control information; The PRB of the lowest index used for receiving or monitoring the control information; The PRB with the lowest index in the earliest symbol used for reception or monitoring of the control information.

5. The device according to claim 3, wherein: The physical downlink shared channel is also related to a second TCI state, where the second TCI state refers to: The two TCI states, a TCI state other than the first TCI state.

6. The device according to claim 1, wherein: The processor determines, according to RRC signaling or a DCI field of the DCI format, to send or receive the physical downlink shared channel according to the two TCI states.

7. The device according to claim 1, wherein: The processor determines, according to RRC signaling or a DCI field of the DCI format, to send or receive the physical downlink shared channel according to one of the two TCI states.

8. The device according to claim 6, wherein: The DCI field of the DCI format is the TDRA field of the DCI format.

9. The device according to claim 6, wherein: The RRC signaling is used to indicate whether the physical downlink shared channel is related to one TCI state or two TCI states.

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