Quasi co-location (qcl) indication method, apparatus, device, and storage medium

Abstract

This disclosure relates to a quasi-co-located QCL indication method, apparatus, device, and storage medium, belonging to the field of communication technology. The method includes: a terminal device receiving first information, the first information being used to indicate at least one first transmission configuration indicating TCI state and / or at least one set of second TCI states (201); wherein each first TCI state is used to indicate QCL parameters shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of downlink-specific QCL parameters and uplink-specific QCL parameters. This disclosure can indicate the TCI states of multiple TRPs, thereby improving the flexibility of TCI state indication.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a QCL (Quasi Co-Location) indication method, apparatus, device and storage medium. Background Technology

[0002] In NR (New Radio) systems, especially in frequency range 2, high-frequency channels attenuate rapidly, so beam-based transmission and reception are required to ensure coverage.

[0003] Further research is needed on how network devices indicate the beams used for uplink and downlink transmissions to terminal devices. Summary of the Invention

[0004] This disclosure provides a quasi-co-addressable QCL indication method, apparatus, device, and storage medium. The technical solution is as follows:

[0005] According to one aspect of the present disclosure, a quasi-co-located QCL indication method is provided, the method comprising:

[0006] The terminal device receives first information, which is used to indicate at least one first TCI (Transmission Configuration Indication) state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate QCL parameters shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of downlink-specific QCL parameters and uplink-specific QCL parameters.

[0007] According to one aspect of the present disclosure, a quasi-co-located QCL indication method is provided, the method comprising:

[0008] The network device sends first information, which is used to indicate at least one first transmission configuration indicating TCI state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate QCL parameters shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of downlink-specific QCL parameters and uplink-specific QCL parameters.

[0009] According to one aspect of the present disclosure, a quasi-co-located QCL indicating device is provided, the device comprising:

[0010] The information receiving module is configured to receive first information, the first information being used to indicate at least one first transmission configuration indicating TCI state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate QCL parameters shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of downlink transmission-specific QCL parameters and uplink transmission-specific QCL parameters.

[0011] According to one aspect of the present disclosure, a quasi-co-located QCL indicating device is provided, the device comprising:

[0012] The information sending module is configured to send first information, the first information being used to indicate at least one first transmission configuration indicating TCI state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate QCL parameters shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of downlink transmission-specific QCL parameters and uplink transmission-specific QCL parameters.

[0013] According to one aspect of the present disclosure, a communication device is provided, the communication device comprising:

[0014] processor;

[0015] A memory for storing processor-executable instructions; wherein the processor is configured to load and execute the executable instructions to implement the quasi-co-addressable QCL indication method described above.

[0016] According to one aspect of the present disclosure, a computer-readable storage medium is provided that, when instructions in the computer-readable storage medium are executed by a processor, can perform the above-described quasi-co-addressable QCL instruction method.

[0017] According to one aspect of the embodiments of this application, a chip is provided, the chip including programmable logic circuits and / or program instructions, which, when the chip is run on a communication device, are used to implement the above-described quasi-co-addressable QCL indication method.

[0018] According to one aspect of the present disclosure, a computer program product is provided that, when executed by a processor, is capable of performing the quasi-co-addressable QCL indication method described above.

[0019] The technical solutions provided in this disclosure may have the following beneficial effects:

[0020] By indicating a first TCI state and / or at least a set of second TCI states through the first information, it is possible to indicate the TCI state of multiple TRPs (Multi-TRP, Multi Transmission and Reception Point), thereby improving the flexibility of TCI state indication.

[0021] Furthermore, since this disclosure can indicate the TCI status of multiple TRPs, it also improves the transmission performance for multiple TRPs. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0023] Figure 1 This is a block diagram illustrating a network architecture according to an exemplary embodiment;

[0024] Figure 2 This is a flowchart illustrating a quasi-co-located QCL indication method according to an exemplary embodiment;

[0025] Figure 3 This is a flowchart illustrating a quasi-co-located QCL indication method according to another exemplary embodiment;

[0026] Figure 4 This is a block diagram illustrating a quasi-co-located QCL indicating device according to an exemplary embodiment;

[0027] Figure 5 This is a block diagram illustrating a quasi-co-located QCL indicating device according to another exemplary embodiment;

[0028] Figure 6 This is a block diagram illustrating a communication device according to an exemplary embodiment. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, a first message frame can also be referred to as a second message frame, and similarly, a second message frame can also be referred to as a first message frame.

[0032] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0033] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0034] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0035] Figure 1 The diagram shown is a block diagram of a network architecture provided in an exemplary embodiment of this disclosure, such as... Figure 1 As shown, the quasi-co-located QCL indication system may include: terminal device 11 and network device 12.

[0036] Terminal device 11 may include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment, mobile stations (MS), Internet of Things (IoT) devices, Industrial Internet of Things (IIoT) devices, etc. For ease of description, the devices mentioned above are collectively referred to as terminal devices. Terminal device 11 communicates with network device 12 through some air interface technology, such as the Uu interface.

[0037] Network device 12 can be a base station, which is a device deployed in an access network to provide wireless communication functions for terminal device 11. The base station can be a base station of the serving cell of terminal device 11 or a base station of a neighboring cell of the serving cell of terminal device 11. Base stations can include various forms of macro base stations, micro base stations, relay stations, access points, transmit / receive points, etc. In systems employing different wireless access technologies, the names of devices with base station functions may differ; for example, in a 5G NR system, they are called gNodeB or gNB. A base station can contain at least one TRP. As communication technologies evolve, the name "base station" may change. In this embodiment of the disclosure, unless otherwise specified, "network device" refers to access network equipment, such as a base station.

[0038] The "5G NR system" in this disclosure can also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in this disclosure can be applied to LTE (Long Term Evolution) systems, 5G NR systems, subsequent evolution systems of 5G NR systems, and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems. This application does not limit these applications.

[0039] In Rel-16, the TCI status or spatial relation information of the PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUSCH (Physical Uplink Shared Channel), PUCCH (Physical Uplink Control Channel), and / or reference signals are indicated independently. The PDCCH and PUCCH use a MAC CE (Media Access Control Control Element) to activate a TCI status or spatial relation information, respectively. The PDSCH and PUSCH, on the other hand, use DCI (Downlink Control Information) to indicate their respective TCI status or spatial relation information. The reference signals include DMRS (Demodulation Reference Signal), CSI-RS (Channel State Information Reference Signal), SRS (Sounding Reference Signal), PRS (Positioning Reference Signal), and TRS (Tracking Reference Signal). CSI-RS includes those used for channel state information measurement, beam management, or path loss estimation; SRS includes those used for codebook-based / non-codebook channel state information measurement, or those used for beam management / positioning. Currently, to reduce signaling overhead, it is desirable to use a unified TCI state.The unified TCI state currently includes the joint TCI state (joint transmission configuration indicator), the separate DL TCI state (separate Downlink Transmission Configuration Indication), and the separate UL TCI state (separate Uplink Transmission Configuration Indication). The joint TCI state can indicate QCL parameters shared by downlink and uplink transmissions; the separate DL TCI state is used to indicate QCL parameters specific to downlink transmissions; and the separate UL TCI state is used to indicate QCL parameters specific to uplink transmissions.

[0040] If the network device indicates a separate DL TCI state for downlink transmission, this TCI state can be used for the terminal's PDSCH and a portion of the PDCCH (e.g., UE-dedicated PDCCH), as well as some downlink reference signals. If the network device indicates a separate UL TCI state for uplink transmission, this TCI state can be used for the terminal's PUSCH and PUCCH, as well as some uplink reference signals. If the network device indicates a joint TCI state, this TCI state can be used for the terminal's PDSCH and a portion of the PDCCH (e.g., UE-dedicated PDCCH), as well as some downlink reference signals; and / or, for the terminal's PUSCH and PUCCH, as well as some uplink reference signals.

[0041] Currently, it can only indicate the TCI status of a single TRP, and the indication conditions for the TCI status are relatively limited and not flexible enough.

[0042] Figure 2 This is a flowchart illustrating a quasi-co-address QCL indication method according to an exemplary embodiment. This embodiment applies this quasi-co-address QCL indication method to... Figure 1 The following example illustrates the network architecture shown. The method may include the following step 201:

[0043] In step 201, the terminal device receives first information, which indicates at least one first TCI state and / or at least one set of second TCI states.

[0044] Optionally, the terminal device receives the first information from the network device. That is, the network device sends the first information to the terminal device, and the terminal device receives the first information sent by the network device.

[0045] Each first TCI state indicates a QCL parameter shared by downlink and uplink transmissions, and each set of second TCI states indicates at least one of a downlink-specific QCL parameter and an uplink-specific QCL parameter. If the channel characteristics of one antenna port (also called a reference signal port) can be derived from another antenna port, then it is assumed that the QCLs of these two ports, and the channel estimation results obtained from one antenna port, can be used for the other port.

[0046] Optionally, QCL parameters are also called QCL assumptions or QCL information. The TCI state includes QCL parameters, which include at least one of QCL Type A, QCL Type B, QCL Type C, and QCL Type D. QCL Type A, QCL Type B, and QCL Type C include at least one of Doppler shift, Doppler spread, average time delay, and time delay spread. QCL Type D corresponds to spatial reception parameter information. QCL Type D can also be commonly referred to as beam information.

[0047] In some embodiments, the TCI status is used to inform the terminal device which SSB or CSI-RS corresponding to the receiving network device should be used for the QCL parameter when receiving the DMRS and / or PDCCH / PDSCH; or to inform the terminal device which reference signal (such as SRS or CSI-RS) corresponding to the QCL parameter, spatialrelationinfo, or spatial setting should be used when sending PUCCH / PUSCH.

[0048] In an exemplary embodiment, the first TCI state is a joint TCI state, which can indicate QCL parameters shared by downlink and uplink transmissions.

[0049] Optionally, downlink transmission includes the transmission of at least one of PDSCH, PDCCH, and downlink reference signal; uplink transmission includes the transmission of at least one of PUSCH, PUCCH, and uplink reference signal.

[0050] In some embodiments, the reference signal resource is indicated by a resource identifier or a resource set identifier.

[0051] In an exemplary embodiment, each group of second TCI states includes a separate DL TCI state and / or a separate UL TCI state. That is, for a certain group of second TCI states, it may include only the separate DL TCI state, or only the separate UL TCI state, or it may include both the separate DL TCI state and the separate UL TCI state.

[0052] Optionally, each group of second TCI states includes one or two second TCI states, each second TCI state being used to indicate QCL parameters specific to downlink transmission or QCL parameters specific to uplink transmission.

[0053] In some embodiments, a set of second TCI states may be used only to indicate QCL parameters specific to downlink transmission, without indicating QCL parameters specific to uplink transmission; a set of second TCI states may also be used only to indicate QCL parameters specific to uplink transmission, without indicating QCL parameters specific to downlink transmission; a set of second TCI states may also indicate both QCL parameters specific to downlink transmission and QCL parameters specific to uplink transmission.

[0054] Optionally, for multiple TRPs, at least three of the following cases must exist:

[0055] (1) The QCL parameters corresponding to multiple TRPs are indicated by multiple first TCI states;

[0056] (2) The QCL parameters corresponding to multiple TRPs are indicated by multiple sets of second TCI states;

[0057] (3) The QCL parameters corresponding to multiple TRPs are indicated by at least one first TCI state and at least one set of second TCI states.

[0058] In some embodiments, taking n TRPs as an example, where n is an integer greater than 1, then:

[0059] Corresponding to the above situation (1), n ​​TRPs can correspond to n first TCI states, and the QCL parameters (beams) of each TRP are indicated by a first TCI state;

[0060] Corresponding to the above situation (2), n TRPs can correspond to n sets of second TCI states, and the QCL parameters (beams) of each TRP are indicated by a set of second TCI states;

[0061] Corresponding to the above situation (3), n TRPs can correspond to n1 first TCI states and n2 sets of second TCI states, n1+n2 equals n, and n1 and n2 are both positive integers; the QCL parameters (beams) of each TRP are indicated by a first TCI state or a set of second TCI states.

[0062] Optionally, the first information includes a first MAC CE, which activates at least one first TCI state and / or at least one set of second TCI states corresponding to a code point.

[0063] In some embodiments, the first information activates only one code point via MAC CE to indicate the TCI state of one or more TRPs. When it is necessary to change the TCI state (i.e., change the QCL parameter indicated by the TCI state), the terminal device receives a new MAC CE to activate the changed TCI state corresponding to a code point (of course, the changed TCI state includes at least one of at least one first TCI state and at least one of at least one set of second TCI states). Optionally, the code point is also referred to as a codepoint.

[0064] In an exemplary embodiment, taking a Multi-TRP scenario including two TRPs as an example, the first MAC CE indicates the TCI states corresponding to the two TRPs (including the first TRP and the second TRP), and at least the following possible situations exist:

[0065] (1) The first MAC CE only indicates the first TCI state corresponding to the first TRP, and the first MAC CE does not indicate the TCI state corresponding to the second TRP;

[0066] (2) The first MAC CE indicates the first TCI state corresponding to the first TRP and the first TCI state corresponding to the second TRP;

[0067] (3) The first MAC CE indicates the first TCI state corresponding to the first TRP and the second TCI state corresponding to the second TRP;

[0068] (4) The first MAC CE only indicates the second TCI state corresponding to the first TRP, and the first MAC CE does not indicate the TCI state corresponding to the second TRP;

[0069] (5) The first MAC CE indicates the second TCI state corresponding to the first TRP and the first TCI state corresponding to the second TRP;

[0070] (6) The first MAC CE indicates the second TCI state corresponding to the first TRP and the second TCI state corresponding to the second TRP;

[0071] (7) The first MAC CE indicates the first TCI state corresponding to the second TRP, and the first MAC CE does not indicate the TCI state corresponding to the first TRP;

[0072] (8) The first MAC CE indicates the second TCI state corresponding to the second TRP, and the first MAC CE does not indicate the TCI state corresponding to the first TRP.

[0073] It should be noted that the second TCI state corresponding to the above TRP can refer to one or two second TCI states; that is, the second TCI state refers to the separate DL TCI state and / or the separate UL TCI state.

[0074] Optionally, the first information includes a second MAC CE and DCI (Downlink Control Information), the second MAC CE activates at least one first TCI state and / or at least one set of second TCI states corresponding to the multiple code points respectively, and the DCI indicates one of the multiple code points.

[0075] In some embodiments, the second MAC CE activates multiple code points, each of which corresponds to at least one TRP's TCI state. Each of the multiple code points can indicate the TCI state of multiple TRPs. Optionally, the DCI further indicates which of the multiple code points is used to indicate the TCI state of one or more TRPs for each time period, the current time period, or the next time period.

[0076] In this embodiment of the disclosure, multiple code points are activated by using MAC CE to indicate the TCI state of one or more TRPs, and the code point used each time is determined by the corresponding DCI indication information, thereby eliminating the need to use MAC CE to change the TCI state corresponding to the code point multiple times and reducing the latency of TCI state update.

[0077] In summary, this disclosure indicates a first TCI state and / or at least a set of second TCI states through first information, thereby enabling the indication of the TCI state of multiple TRPs and improving the flexibility of TCI state indication.

[0078] Furthermore, since this disclosure can indicate the TCI status of multiple TRPs, it also improves the transmission performance for multiple TRPs.

[0079] In an exemplary embodiment, such as Figure 3 As shown, the quasi-co-address QCL indication method further includes the following step 202:

[0080] In step 202, the terminal device receives second information, which is used to indicate the type of TCI state contained in the first information.

[0081] Optionally, the terminal device receives second information from the network device. That is, the network device sends second information to the terminal device, and the terminal device receives the second information sent by the network device.

[0082] The types of TCI states include the first TCI state and the second TCI state.

[0083] In some embodiments, the first information and the second information are sent to the terminal device sequentially, or the first information and the second information may be included in the same signaling and sent to the terminal device simultaneously. That is, step 201 can be executed first, followed by step 202, or steps 201 and 202 can be executed simultaneously.

[0084] Optionally, the second information is used to indicate that the type of TCI state included in the first information includes a first TCI state; or, the second information is used to indicate that the type of TCI state included in the first information includes a second TCI state; or, the second information is used to indicate that the type of TCI state included in the first information includes both a first TCI state and a second TCI state.

[0085] Optionally, the type of TCI state contained in the first information is indicated independently, or the type of TCI state contained in the first information is indicated simultaneously.

[0086] In an exemplary embodiment, when the second information is used to indicate that the type of the TCI state included in the first information includes a first TCI state, or when the second information is used to indicate that the type of the TCI state included in the first information includes a second TCI state, the second information may independently indicate the TCI states corresponding to multiple TRPs, or may simultaneously indicate the TCI states corresponding to multiple TRPs.

[0087] For example, an independent indication could be: a first TRP corresponding to a first TCI state, a second TRP corresponding to a first TCI state, a third TRP corresponding to a first TCI state, and so on; another example is: a first TRP corresponding to a second TCI state, a second TRP corresponding to a second TCI state, a third TRP corresponding to a second TCI state, and so on; yet another example is: multiple TRPs all corresponding to a first TCI state; yet another example is: multiple TRPs all corresponding to a second TCI state.

[0088] In this embodiment of the disclosure, when the second information is used to indicate that the type of the TCI state included in the first information includes the first TCI state, or when the second information is used to indicate that the type of the TCI state included in the first information includes the second TCI state, the second information can simultaneously indicate the TCI states corresponding to multiple TRPs, thereby further saving signaling overhead.

[0089] It should be noted that when the second information is used to indicate that the type of TCI state contained in the first information includes both the first TCI state and the second TCI state, the type of TCI state contained in the first information can only be indicated independently, not simultaneously.

[0090] For example, in the case of two TRPs, a certain code point can indicate that the first TRP corresponds to the first TCI state and the second TRP corresponds to the second TCI state; or, a certain code point among multiple code points can indicate that the first TRP corresponds to the second TCI state and the second TRP corresponds to the first TCI state; or, code point 1 among multiple code points can indicate that the first TRP corresponds to the first TCI state and code point 2 among multiple code points can indicate that the second TRP corresponds to the second TCI state; or, code point 3 among multiple code points can indicate that the first TRP corresponds to the second TCI state and code point 4 among multiple code points can indicate that the second TRP corresponds to the first TCI state.

[0091] This disclosure provides the following schemes (Scheme 1 to Scheme 3) for indicating the type of TCI state in a Multi-TRP scenario:

[0092] Option 1: The second information is RRC (Radio Resource Control) signaling.

[0093] In some embodiments, the second information is RRC signaling, which is different from the first information, that is, the type of TCI status contained in the first information is indicated by the RRC signaling.

[0094] Taking two TRPs as an example, if the RRC signaling indicates that the two TRPs contained in the first information are both of the first TCI state, then each code point in the first information can activate at most one first TCI state for each TRP; if the RRC signaling indicates that the two TRPs contained in the first information are both of the second TCI state, then each code point in the first information can activate at most one set of second TCI states for each TRP, and one set of second TCI states includes one separate DL TCI state and / or one separate UL TCI state; if the RRC signaling indicates that the first TRP contained in the first information is of the first TCI state and the second TRP is of the second TCI state, then each code point in the first information can activate at most one first TCI state for the first TRP and at most one set of second TCI states for the second TRP, and one set of second TCI states includes one separate DL TCI state and / or one separate UL TCI state.

[0095] Option 2: The second piece of information is MAC CE

[0096] In some embodiments, each TRP corresponds to at most two TCI states (i.e., a pair of second TCI states); then, as shown in Table 1 below, for two TRPs, each code point corresponds to at most 4 TCI states.

[0097] Table 1

[0098]

[0099] As shown in Table 1 above, for at least one TCI state, corresponding indication information (such as at least one of C1, C2, C3, and C4) is set to indicate whether the corresponding TCI state has occurred. In an exemplary embodiment, taking codepoint #0 as an example, TCI0,1 and TCI0,2 correspond to the same TRP. TCI0,1 has at least the following two meanings:

[0100] (1) TCI 0,1 is the first TCI state, which is used for both uplink and downlink transmission. In this case, TCI 0,2 will not appear.

[0101] (2) TCI 0,1 represents the separate DL TCI state in the second TCI state. In this case, the appearance of TCI 0,2 always indicates the separate UL TCI state in the second TCI state. However, TCI 0,2 may not appear, meaning only TCI 0,1 indicates the separate DL TCI state of a certain TRP. Due to these two meanings, if TCI 0,2 does not appear, the terminal device will not know whether TCI 0,1 represents the separate DL TCI state in the first or second TCI state. To further distinguish them, a 1-bit (bit character) type indicator can be set for TCI 0,1 to differentiate between these two cases (i.e., to differentiate whether TCI 0,1 represents the separate DL TCI state in the first or second TCI state). Of course, TCI 0,2 can also appear while TCI 0,1 does not appear; see the above for a detailed explanation. Therefore, TCI 0,1 and TCI 0,2 corresponding to a certain code point have at least one of the following combinations:

[0102] Combination 1: The indication information corresponding to TCI0,1 indicates that it does not appear, the indication information corresponding to TCI0,2 indicates that it does not appear, and the type indicator of TCI0,1 indicates 0 or 1 (since neither TCI0,1 nor TCI0,2 appears, the type indicator of TCI0,1 is meaningless). Therefore, TCI0,1 does not appear and TCI0,2 does not appear.

[0103] Combination 2: If the indication information corresponding to TCI0,1 indicates that it appears, and the indication information corresponding to TCI0,2 indicates that it does not appear, and the type indicator of TCI0,1 indicates that it is the first TCI state, then TCI0,1 appears and TCI0,2 does not appear.

[0104] Combination 3: If the indicator information corresponding to TCI0,1 indicates that it appears, and the indicator information corresponding to TCI0,2 indicates that it does not appear, and the type indicator of TCI0,1 indicates that it is the second TCI state, then TCI0,1 appears and TCI0,2 does not appear.

[0105] Combination 4: The indication information corresponding to TCI0,1 indicates its appearance, the indication information corresponding to TCI0,2 indicates its appearance, and the type indicator of TCI0,1 indicates that it is the second TCI state. Then TCI0,1 appears and TCI0,2 appears.

[0106] Combination 5: If the indicator information corresponding to TCI0,1 indicates that it does not appear, and the indicator information corresponding to TCI0,2 indicates that it appears, and the type indicator of TCI0,1 indicates that it is the second TCI state, then TCI0,1 does not appear and TCI0,2 appears.

[0107] As shown in Table 1 above, TCI 0,3 and TCI 0,4 of codepoint #0 correspond to the other TRP among the two TRPs. For an explanation of the meaning of TCI 0,3 and TCI 0,4, please refer to TCI0,1 and TCI0,2 above.

[0108] Optionally, the second information and the first information share the same MAC CE (such as the first MAC CE or the second MAC CE), or the second information and the first information use different MAC CEs.

[0109] Optionally, the following are examples of the second and first information using different MAC CEs.

[0110] For example, the second information uses a MAC CE to indicate that the TCI state type of a TRP is a first TCI state, and the other MAC CE corresponding to the first information only needs to activate at most one first TCI state for each code point of the TRP. Furthermore, the first information also includes an indication of whether the first TCI state occurs for each code point of the TRP.

[0111] For example, the second information uses a MAC CE to indicate that the TCI state type of a TRP is a second TCI state, and the other MAC CE corresponding to the first information needs to activate a maximum of two second TCI states for each code point of the TRP. Further, the first information for each code point of the TRP also includes two indication messages indicating whether the two second TCI states are present.

[0112] Optionally, when the second information and the first information share the same MAC CE, each code point includes a first information field and a second information field, where the first information field is used to carry the first information and the second information field is used to carry the second information.

[0113] For example, each code point of a MAC CE for a TRP may contain an indicator field of one of the following combinations, wherein the type indicator is a second information field and the others are first information fields.

[0114] Combination 1: The indicator information corresponding to TCI0,1 indicates that it does not appear, the indicator information corresponding to TCI0,2 indicates that it does not appear, and the type indicator indicates 0 or 1 (since neither TCI0,1 nor TCI0,2 appears, the type indicator is meaningless). Therefore, TCI0,1 does not appear and TCI0,2 does not appear.

[0115] Combination 2: The indication information corresponding to TCI0,1 indicates that it appears, the indication information corresponding to TCI0,2 indicates that it does not appear, and the type indicator indicates that it is the first TCI state. In this case, TCI0,1 appears and TCI0,2 does not appear.

[0116] Combination 3: The indicator information corresponding to TCI0,1 indicates that it appears, the indicator information corresponding to TCI0,2 indicates that it does not appear, and the type indicator indicates that it is the second TCI state. In this case, TCI0,1 appears and TCI0,2 does not appear.

[0117] Combination 4: The indication information corresponding to TCI0,1 indicates its appearance, the indication information corresponding to TCI0,2 indicates its appearance, and the type indicator indicates that it is the second TCI state. Then TCI0,1 appears and TCI0,2 appears.

[0118] Combination 5: The indicator information corresponding to TCI0,1 indicates that it does not appear, the indicator information corresponding to TCI0,2 indicates that it appears, and the type indicator indicates that it is the second TCI state. In this case, TCI0,1 does not appear and TCI0,2 appears.

[0119] Option 3: Indicate the type of TCI status via DCI.

[0120] Optionally, DCI is also used to indicate the type of TCI state contained in the first information.

[0121] In some embodiments, when the first information includes a second MAC CE and a DCI, if the second MAC CE does not indicate the type of TCI state, it can be indicated by the DCI. Optionally, the DCI can indicate that the type of TCI state is a first TCI state and / or a second TCI state.

[0122] Optionally, the DCI format is the DCI format used for scheduling PDSCH.

[0123] The DCI format used for scheduling PDSCH includes at least one of DCI format 1_0, DCI format 1_1, and DCI format 1_2.

[0124] Optionally, the DCI may include a downlink allocation indication field (DCI format with DL assignment) or may not include a downlink allocation indication field (DCI format without DL assignment), the downlink allocation indication field being used to indicate PDSCH transmission resources.

[0125] In some embodiments, if the DCI includes a downlink allocation indication field, it means that the DCI is used to indicate both the type of TCI state contained in the first information and the PDSCH transmission resources.

[0126] In some embodiments, if the DCI does not contain a downlink allocation indication field, it means that the DCI is used to indicate the type of TCI state contained in the first information, but not to indicate PDSCH transmission resources.

[0127] Optionally, the DCI format used for scheduling PDSCH is used to indicate that the type of TCI state contained in the first information includes a first TCI state and / or a second TCI state.

[0128] In some embodiments, the DCI format used for scheduling PDSCH can indicate whether all TCI states are the first TCI state, all are the second TCI state, or include both the first and second TCI states. This is similar to the situation shown in Table 1 above.

[0129] Optionally, the DCI format used for scheduling PDSCH is used to indicate the type of TCI state contained in the first information, including a first TCI state and / or a second TCI state dedicated to downlink transmission. In this case, each code point in the MAC CE corresponds to at most one TCI state for each TRP, and the code point is used to indicate whether each TRP is in the first TCI state or the second TCI state dedicated to downlink transmission (i.e., the separate DL TCI state in the second TCI state).

[0130] In this embodiment of the disclosure, since each TRP corresponds to at most one TCI state, if it is a second TCI state, it must be a second TCI state dedicated to downlink transmission. There is no need to use more signaling overhead to indicate whether the second TCI state is used for downlink or uplink, thereby further saving signaling overhead.

[0131] Optionally, the DCI format used for scheduling PDSCH is used to indicate that the type of TCI state contained in the first information includes only the second TCI state dedicated to downlink transmission.

[0132] Optionally, the DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of a first TCI status, a second TCI status, and a second TCI status dedicated to downlink transmission.

[0133] In some embodiments, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes only the first TCI state; or, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes only the second TCI state, wherein the second TCI state refers to at least one of separate DL TCI state and separate UL TCI state; or, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes only the second TCI state dedicated to downlink transmission; or, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes both the first TCI state and the second TCI state dedicated to downlink transmission.

[0134] Optionally, the DCI format is the DCI format used for scheduling PUSCH.

[0135] The DCI format used for scheduling PUSCH includes at least one of DCI format 0_0, DCI format 0_1, and DCI format 0_2.

[0136] In some embodiments, the TCI status indication field may reuse one SRI information field of Rel-16, or reuse at least one of the two SRI indication fields of Rel-17. When reusing the two SRI indication fields of Rel-17, different SRIs can be used to correspond to different TRPs, independently indicating different code points, with each code point corresponding to a first TCI status or a set of second TCI statuses.

[0137] Optionally, the DCI may include an uplink allocation indication field (DCI format with UL assignment) or may not include an uplink allocation indication field (DCI format without UL assignment), the uplink allocation indication field being used to indicate PUSCH transmission resources.

[0138] In some embodiments, if the DCI includes an uplink allocation indication field, it means that the DCI is used to indicate both the type of TCI state contained in the first information and the PUSCH transport resources.

[0139] In some embodiments, if the DCI does not contain an uplink allocation indication field, it means that the DCI is used to indicate the type of TCI state contained in the first information, but not to indicate PUSCH transmission resources.

[0140] In some embodiments, when the DCI does not contain an uplink allocation indication field, in unused bit fields (such as bit fields originally used to indicate uplink resources), a defined symbol can be used to indicate that the DCI does not contain an uplink allocation indication field (or indicates that the DCI does not contain a downlink allocation indication field), but is only used to indicate the type of TCI state contained in the first information. The terminal device can detect that the DCI is only used to indicate a unified TCI state through these defined symbols. Optionally, the defined symbols can be 0, 1, 0000, 1111, etc., and this disclosure does not specifically limit them.

[0141] In some embodiments, the unified TCI state can also be used for the transmission of reference signals.

[0142] Optionally, the DCI format used for scheduling PUSCH is used to indicate that the type of TCI state contained in the first information includes a first TCI state and / or a second TCI state.

[0143] In some embodiments, the DCI format used for scheduling PUSCH can indicate whether all TCI states are the first TCI state, all are the second TCI state, or include both the first and second TCI states. This is similar to the situation shown in Table 1 above.

[0144] Optionally, the DCI format used for scheduling PUSCH is used to indicate the type of TCI state contained in the first information, including a first TCI state and / or a second TCI state dedicated to uplink transmission. In this case, each code point in the MAC CE corresponds to at most one TCI state for each TRP, and the code point is used to indicate whether each TRP is in the first TCI state or the second TCI state dedicated to uplink transmission (i.e., the separate UL TCI state in the second TCI state).

[0145] In this embodiment of the disclosure, since each TRP corresponds to at most one TCI state, if it is a second TCI state, it must be a second TCI state dedicated to uplink transmission. There is no need to use more signaling overhead to indicate whether the second TCI state is used for downlink or uplink, thereby further saving signaling overhead.

[0146] Optionally, the DCI format used for scheduling PUSCH is used to indicate that the type of TCI state contained in the first information includes only the second TCI state dedicated to uplink transmission.

[0147] Optionally, the DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of a first TCI status, a second TCI status, and a second TCI status dedicated to uplink transmission.

[0148] In some embodiments, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes only the first TCI state; or, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes only the second TCI state, wherein the second TCI state refers to at least one of separate DL TCI state and separate UL TCI state; or, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes only the second TCI state dedicated to uplink transmission; or, the TCI state type indication field is used to indicate that the TCI state indicated by the DCI includes both the first TCI state and the second TCI state dedicated to uplink transmission.

[0149] The above schemes one to three explicitly indicate the type of TCI state. This disclosure also provides the following schemes for implicitly indicating the type of TCI state:

[0150] Optionally, the first information includes at least one set of information fields, each set of information fields including a third information field and a fourth information field.

[0151] In some embodiments, the two TCI states carried in the third and fourth information domains belonging to the same group of information domains are identical. In some embodiments, if the two TCI states carried in the third and fourth information domains of the same group of information domains are identical, it can be indicated that the type of the TCI state in that group of information domains is the first TCI state.

[0152] In some embodiments, the two TCI states carried in the third and fourth information domains belonging to the same group of information domains are different. In some embodiments, if the two TCI states carried in the third and fourth information domains of the same group of information domains are different, it can be indicated that the type of the TCI state in that group of information domains is the second TCI state.

[0153] In some embodiments, if the third information field precedes the fourth information field, it indicates that the third information field carries the second TCI state dedicated to downlink transmission and the fourth information field carries the second TCI state dedicated to uplink transmission.

[0154] In some embodiments, if the third information field precedes the fourth information field, it indicates that the third information field carries the second TCI state dedicated to uplink transmission and the fourth information field carries the second TCI state dedicated to downlink transmission.

[0155] Optionally, if the two TCI states carried in the third and fourth information domains belonging to the same group of information domains are different, the second TCI state carried in the third information domain is used to indicate the QCL parameters dedicated to downlink transmission, and the second TCI state carried in the fourth information domain is used to indicate the QCL parameters dedicated to uplink transmission.

[0156] Optionally, if the two TCI states carried in the third and fourth information domains belonging to the same group of information domains are different, the second TCI state carried in the third information domain is used to indicate the QCL parameters dedicated to uplink transmission, and the second TCI state carried in the fourth information domain is used to indicate the QCL parameters dedicated to downlink transmission.

[0157] In this embodiment of the disclosure, the type of TCI state can be implicitly indicated according to a pre-set rule or protocol. The type of TCI state in the information domain can be determined without explicit signaling indication during communication, thereby saving signaling overhead.

[0158] It should be noted that the steps performed by the terminal device described above can be implemented independently as a quasi-co-address QCL indication method on the terminal device side; the steps performed by the network device described above can be implemented independently as a quasi-co-address QCL indication method on the network device side.

[0159] The following are embodiments of the apparatus disclosed herein, which can be used to execute embodiments of the method disclosed herein. For details not disclosed in the apparatus embodiments of this disclosure, please refer to the embodiments of the method disclosed herein.

[0160] Figure 4 This is a block diagram illustrating a quasi-co-located QCL indicating device according to an exemplary embodiment. The device 400 can be a terminal device as described above, or it can be disposed within a terminal device. The device 400 may include:

[0161] The information receiving module 410 is configured to receive first information, the first information being used to indicate at least one first transmission configuration indicating TCI state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate QCL parameters shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of downlink transmission-specific QCL parameters and uplink transmission-specific QCL parameters.

[0162] Optionally, each group of second TCI states includes one or two second TCI states, each second TCI state being used to indicate the QCL parameter dedicated to the downlink transmission or the QCL parameter dedicated to the uplink transmission.

[0163] Optionally, the first information includes a first media access layer control unit (MAC CE), wherein the first MAC CE activates at least one first TCI state and / or at least one set of second TCI states corresponding to a code point.

[0164] Optionally, the first information includes a second MAC CE and downlink control information DCI, wherein the second MAC CE activates at least one first TCI state and / or at least one set of second TCI states corresponding to the plurality of code points respectively, and the DCI indicates one of the plurality of code points.

[0165] Optionally, the information receiving module 410 is further configured to receive second information, the second information being used to indicate the type of TCI state contained in the first information.

[0166] Optionally, the second information is used to indicate that the type of the TCI state included in the first information includes the first TCI state; or, the second information is used to indicate that the type of the TCI state included in the first information includes the second TCI state; or, the second information is used to indicate that the type of the TCI state included in the first information includes both the first TCI state and the second TCI state.

[0167] Optionally, the type of TCI state contained in the first information is indicated independently, or the type of TCI state contained in the first information is indicated simultaneously.

[0168] Optionally, the second information is Radio Resource Control (RRC) signaling.

[0169] Optionally, the second information is MAC CE.

[0170] Optionally, the second information and the first information share the same MAC CE, or the second information and the first information use different MAC CEs.

[0171] Optionally, when the second information and the first information share the same MAC CE, each code point includes a first information field and a second information field, wherein the first information field is used to carry the first information and the second information field is used to carry the second information.

[0172] Optionally, the DCI is also used to indicate the type of TCI state contained in the first information.

[0173] Optionally, the DCI format is the DCI format used for scheduling the Physical Downlink Shared Channel (PDSCH).

[0174] Optionally, the DCI may include a downlink allocation indication field or may not include a downlink allocation indication field, wherein the downlink allocation indication field is used to indicate downlink transmission resources.

[0175] Optionally, the DCI format used for scheduling PDSCH,

[0176] The type of TCI state included in the first information includes the first TCI state and / or the second TCI state.

[0177] Optionally, the DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to downlink transmission.

[0178] Optionally, the DCI format is a DCI format used for scheduling the Physical Uplink Shared Channel (PUSCH).

[0179] Optionally, the DCI may include an uplink allocation indication field or may not include an uplink allocation indication field, wherein the uplink allocation indication field is used to indicate uplink transmission resources.

[0180] Optionally, the DCI format used for scheduling PUSCH,

[0181] The type of TCI state included in the first information includes the first TCI state and / or the second TCI state.

[0182] Optionally, the DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to uplink transmission.

[0183] Optionally, the first information includes at least one set of information fields, and each set of information fields includes a third information field and a fourth information field;

[0184] The two TCI states carried in the third and fourth information domains, which belong to the same group of information domains, are the same; or the two TCI states carried in the third and fourth information domains, which belong to the same group of information domains, are different.

[0185] Optionally, if the two TCI states carried in the third and fourth information domains, which belong to the same group of information domains, are different,

[0186] The second TCI state carried in the third information field is used to indicate QCL parameters dedicated to downlink transmission, and the second TCI state carried in the fourth information field is used to indicate QCL parameters dedicated to uplink transmission; or, the second TCI state carried in the third information field is used to indicate QCL parameters dedicated to uplink transmission, and the second TCI state carried in the fourth information field is used to indicate QCL parameters dedicated to downlink transmission.

[0187] Optionally, the downlink transmission includes the transmission of at least one of the Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), and downlink reference signal; the uplink transmission includes the transmission of at least one of the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and uplink reference signal.

[0188] In summary, this disclosure indicates a first TCI state and / or at least a set of second TCI states through first information, thereby enabling the indication of the TCI state of multiple TRPs and improving the flexibility of TCI state indication.

[0189] Figure 5 This is a block diagram illustrating a quasi-co-located QCL indicating device according to another exemplary embodiment. The device 500 can be a network device as described above, or it can be disposed within a network device. The device 500 may include:

[0190] The information sending module 510 is configured to send first information, the first information being used to indicate at least one first transmission configuration indicating TCI state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate QCL parameters shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of downlink transmission-specific QCL parameters and uplink transmission-specific QCL parameters.

[0191] Optionally, each group of second TCI states includes one or two second TCI states, each second TCI state being used to indicate the QCL parameter dedicated to the downlink transmission or the QCL parameter dedicated to the uplink transmission.

[0192] Optionally, the first information includes a first media access layer control unit (MAC CE), wherein the first MAC CE activates at least one first TCI state and / or at least one set of second TCI states corresponding to a code point.

[0193] Optionally, the first information includes a second MAC CE and downlink control information DCI, wherein the second MAC CE activates at least one first TCI state and / or at least one set of second TCI states corresponding to the plurality of code points respectively, and the DCI indicates one of the plurality of code points.

[0194] Optionally, the information sending module 510 is further configured to send second information, the second information being used to indicate the type of TCI state contained in the first information.

[0195] Optionally, the second information is used to indicate that the type of the TCI state included in the first information includes the first TCI state; or, the second information is used to indicate that the type of the TCI state included in the first information includes the second TCI state; or, the second information is used to indicate that the type of the TCI state included in the first information includes both the first TCI state and the second TCI state.

[0196] Optionally, the type of TCI state contained in the first information is indicated independently, or the type of TCI state contained in the first information is indicated simultaneously.

[0197] Optionally, the second information is Radio Resource Control (RRC) signaling.

[0198] Optionally, the second information is MAC CE.

[0199] Optionally, the second information and the first information share the same MAC CE, or the second information and the first information use different MAC CEs.

[0200] Optionally, when the second information and the first information share the same MAC CE, each code point includes a first information field and a second information field, wherein the first information field is used to carry the first information and the second information field is used to carry the second information.

[0201] Optionally, the DCI is also used to indicate the type of TCI state contained in the first information.

[0202] Optionally, the DCI format is the DCI format used for scheduling the Physical Downlink Shared Channel (PDSCH).

[0203] Optionally, the DCI may include a downlink allocation indication field or may not include a downlink allocation indication field, wherein the downlink allocation indication field is used to indicate downlink transmission resources.

[0204] Optionally, the DCI format used for scheduling PDSCH,

[0205] The type of TCI state included in the first information includes the first TCI state and / or the second TCI state.

[0206] Optionally, the DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to downlink transmission.

[0207] Optionally, the DCI format is a DCI format used for scheduling the Physical Uplink Shared Channel (PUSCH).

[0208] Optionally, the DCI may include an uplink allocation indication field or may not include an uplink allocation indication field, wherein the uplink allocation indication field is used to indicate uplink transmission resources.

[0209] Optionally, the DCI format used for scheduling PUSCH,

[0210] The type of TCI state included in the first information includes the first TCI state and / or the second TCI state.

[0211] Optionally, the DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to uplink transmission.

[0212] Optionally, the first information includes at least one set of information fields, and each set of information fields includes a third information field and a fourth information field;

[0213] The two TCI states carried in the third and fourth information domains, which belong to the same group of information domains, are the same;

[0214] Or the two TCI states carried in the third and fourth information domains, which belong to the same group of information domains, are different.

[0215] Optionally, if the two TCI states carried in the third and fourth information domains, which belong to the same group of information domains, are different,

[0216] The second TCI state carried in the third information field is used to indicate QCL parameters dedicated to downlink transmission, and the second TCI state carried in the fourth information field is used to indicate QCL parameters dedicated to uplink transmission; or, the second TCI state carried in the third information field is used to indicate QCL parameters dedicated to uplink transmission, and the second TCI state carried in the fourth information field is used to indicate QCL parameters dedicated to downlink transmission.

[0217] Optionally, the downlink transmission includes the transmission of at least one of the Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), and downlink reference signal; the uplink transmission includes the transmission of at least one of the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and uplink reference signal.

[0218] In summary, this disclosure indicates a first TCI state and / or at least a set of second TCI states through first information, thereby enabling the indication of the TCI state of multiple TRPs and improving the flexibility of TCI state indication.

[0219] It should be noted that the device provided in the above embodiments is only illustrated by the division of the above functional modules when implementing the quasi-co-addressable QCL indication function. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0220] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0221] An exemplary embodiment of this disclosure also provides a quasi-co-addressable QCL indicating device, capable of implementing the quasi-co-addressable QCL indicating method on the terminal device side provided in this disclosure. The device includes: a processor, and a memory for storing executable instructions of the processor. The processor is configured to:

[0222] Receive first information, the first information including at least one first transmission configuration indication (TCI) state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate a QCL shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of a QCL dedicated to downlink transmissions and a QCL dedicated to uplink transmissions.

[0223] Further details about the device can be found above, and will not be repeated here.

[0224] An exemplary embodiment of this disclosure also provides a quasi-co-located QCL indicating apparatus capable of implementing the quasi-co-located QCL indicating method on the network device side provided in this disclosure. The apparatus includes: a processor, and a memory for storing executable instructions of the processor. The processor is configured to:

[0225] Send first information, the first information including at least one first transmission configuration indication (TCI) state and / or at least one set of second TCI states; wherein each first TCI state is used to indicate a QCL shared by downlink and uplink transmissions, and each set of second TCI states is used to indicate at least one of a QCL dedicated to downlink transmissions and a QCL dedicated to uplink transmissions.

[0226] Further details about the device can be found above, and will not be repeated here.

[0227] Figure 6 This is a block diagram illustrating a communication device 600 according to an exemplary embodiment. The communication device 600 can be the aforementioned terminal device or network device. The communication device 600 may include: a processor 601, a receiver 602, a transmitter 603, a memory 604, and a bus 605.

[0228] The processor 601 includes one or more processing cores. The processor 601 executes various functional applications and information processing by running software programs and modules.

[0229] The receiver 602 and the transmitter 603 can be implemented as a communication component, which can be a communication chip.

[0230] The memory 604 is connected to the processor 601 via the bus 605.

[0231] The memory 604 can be used to store at least one instruction, and the processor 601 is used to execute the at least one instruction to implement the various steps in the above method embodiments.

[0232] Furthermore, memory 604 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random-access memory (SRAM), read-only memory (ROM), magnetic storage, flash memory, and programmable read-only memory (PROM).

[0233] In an exemplary embodiment, a computer-readable storage medium is also provided, which, when the instructions in the computer-readable storage medium are executed by a processor, is capable of executing the above-described quasi-co-addressable QCL indication method.

[0234] In an exemplary embodiment, a chip is also provided, the chip including programmable logic circuitry and / or program instructions, which, when the chip is run on a communication device, are used to implement the above-described quasi-co-addressable QCL indication method.

[0235] In an exemplary embodiment, a computer program product is also provided, which, when executed by a processor, is capable of performing the quasi-co-addressable QCL indication method described above.

[0236] An exemplary embodiment of this disclosure also provides a quasi-co-located QCL indication system, the quasi-co-located QCL indication system including a terminal device and a network device. Either the terminal device or the network device can be... Figure 6 The communication device provided in the illustrated embodiment.

[0237] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0238] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A quasi-co-addressable QCL indication method, characterized in that, The method includes: The terminal device receives first information, which indicates at least one first transmission configuration indication (TCI) state and at least one set of second TCI states. Each first TCI state indicates a QCL parameter shared by downlink and uplink transmissions, and each set of second TCI states indicates at least one of downlink-specific QCL parameters and uplink-specific QCL parameters. Each set of second TCI states includes one or two second TCI states, each indicating either the downlink-specific QCL parameter or the uplink-specific QCL parameter. One first TCI state indicates the QCL parameter corresponding to one multiple transmit / receive point (TRP), and a set of second TCI states indicates the QCL parameter corresponding to another TRP. The first information includes a second MAC CE and downlink control information (DCI). The CE activates at least one first TCI state and at least one set of second TCI states corresponding to multiple code points, respectively, and the DCI indicates one of the multiple code points; the first information includes at least one set of information fields, each set of information fields including a third information field and a fourth information field; the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are the same; or the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different; when the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to downlink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to uplink transmission; or, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to uplink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to downlink transmission.

2. The method according to claim 1, characterized in that, The first information includes a first media access layer control unit (MAC CE), wherein the first MAC CE activates at least one first TCI state and at least one set of second TCI states corresponding to a code point.

3. The method according to claim 1, characterized in that, The method further includes: The terminal device receives second information, which is used to indicate the type of TCI state contained in the first information.

4. The method according to claim 3, characterized in that, The second information is used to indicate that the type of TCI state contained in the first information includes the first TCI state and the second TCI state.

5. The method according to claim 3, characterized in that, The types of TCI states contained in the first information are indicated independently, or the types of TCI states contained in the first information are indicated simultaneously.

6. The method according to claim 3, characterized in that, The second information is Radio Resource Control (RRC) signaling.

7. The method according to claim 3, characterized in that, The second piece of information is MAC CE.

8. The method according to claim 7, characterized in that, The second information and the first information share the same MAC CE, or the second information and the first information use different MAC CEs.

9. The method according to claim 8, characterized in that, When the second information and the first information share the same MAC CE, each code point includes a first information field and a second information field, wherein the first information field is used to carry the first information and the second information field is used to carry the second information.

10. The method according to claim 1, characterized in that, The DCI is also used to indicate the type of TCI state contained in the first information.

11. The method according to claim 10, characterized in that, The DCI format is the DCI format used for scheduling the Physical Downlink Shared Channel (PDSCH).

12. The method according to claim 11, characterized in that, The DCI may or may not include a downlink allocation indication field, which is used to indicate downlink transmission resources.

13. The method according to claim 11, characterized in that, The DCI format used for scheduling PDSCH The type of TCI state included in the first information includes the first TCI state and the second TCI state.

14. The method according to claim 13, characterized in that, The DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to downlink transmission.

15. The method according to claim 10, characterized in that, The DCI format is the DCI format used for scheduling the Physical Uplink Shared Channel (PUSCH).

16. The method according to claim 15, characterized in that, The DCI may or may not include an uplink allocation indication field, which is used to indicate uplink transmission resources.

17. The method according to claim 15, characterized in that, The DCI format used for scheduling PUSCH The type of TCI state included in the first information includes the first TCI state and the second TCI state.

18. The method according to claim 17, characterized in that, The DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to uplink transmission.

19. The method according to any one of claims 1 to 18, characterized in that, The downlink transmission includes the transmission of at least one of the following: PDSCH, Physical Downlink Control Channel (PDCCH), and downlink reference signal; The uplink transmission includes the transmission of at least one of the following: PUSCH, Physical Uplink Control Channel (PUCCH), and Uplink Reference Signal.

20. A quasi-co-addressable QCL indication method, characterized in that, The method includes: The network device sends first information, which indicates at least one first Transmission Configuration Indicator (TCI) state and at least one set of second TCI states; wherein each first TCI state indicates a QCL parameter shared by downlink and uplink transmissions, and each set of second TCI states indicates at least one of downlink-specific QCL parameters and uplink-specific QCL parameters; each set of second TCI states includes one or two second TCI states, each second TCI state indicating either the downlink-specific QCL parameter or the uplink-specific QCL parameter; one first TCI state indicates the QCL parameter corresponding to one Transmitter-Receiver Point (TRP), and a set of second TCI states indicates the QCL parameter corresponding to another TRP; the first information includes a second MAC CE and downlink control information (DCI), the second MAC... The CE activates at least one first TCI state and at least one set of second TCI states corresponding to multiple code points, respectively, and the DCI indicates one of the multiple code points; the first information includes at least one set of information fields, each set of information fields including a third information field and a fourth information field; the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are the same; or the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different; when the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to downlink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to uplink transmission; or, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to uplink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to downlink transmission.

21. The method according to claim 20, characterized in that, The first information includes a first media access layer control unit (MAC CE), wherein the first MAC CE activates at least one first TCI state and at least one set of second TCI states corresponding to a code point.

22. The method according to claim 20, characterized in that, The method further includes: The network device sends a second message, which indicates the type of TCI state contained in the first message.

23. The method according to claim 22, characterized in that, The second information is used to indicate that the type of TCI state contained in the first information includes the first TCI state and the second TCI state.

24. The method according to claim 22, characterized in that, The types of TCI states contained in the first information are indicated independently, or the types of TCI states contained in the first information are indicated simultaneously.

25. The method according to claim 22, characterized in that, The second information is Radio Resource Control (RRC) signaling.

26. The method according to claim 22, characterized in that, The second piece of information is MAC CE.

27. The method according to claim 26, characterized in that, The second information and the first information share the same MAC CE, or the second information and the first information use different MAC CEs.

28. The method according to claim 27, characterized in that, When the second information and the first information share the same MAC CE, each code point includes a first information field and a second information field, wherein the first information field is used to carry the first information and the second information field is used to carry the second information.

29. The method according to claim 20, characterized in that, The DCI is also used to indicate the type of TCI state contained in the first information.

30. The method according to claim 29, characterized in that, The DCI format is the DCI format used for scheduling the Physical Downlink Shared Channel (PDSCH).

31. The method according to claim 30, characterized in that, The DCI may or may not include a downlink allocation indication field, which is used to indicate downlink transmission resources.

32. The method according to claim 30, characterized in that, The DCI format used for scheduling PDSCH The type of TCI state included in the first information includes the first TCI state and the second TCI state.

33. The method according to claim 32, characterized in that, The DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to downlink transmission.

34. The method according to claim 33, characterized in that, The DCI format is the DCI format used for scheduling the Physical Uplink Shared Channel (PUSCH).

35. The method according to claim 34, characterized in that, The DCI may or may not include an uplink allocation indication field, which is used to indicate uplink transmission resources.

36. The method according to claim 34, characterized in that, The DCI format used for scheduling PUSCH The type of TCI state included in the first information includes the first TCI state and the second TCI state.

37. The method according to claim 36, characterized in that, The DCI includes a TCI status type indication field, which indicates that the TCI status indicated by the DCI includes at least one of the first TCI status, the second TCI status, and the second TCI status dedicated to uplink transmission.

38. The method according to any one of claims 20 to 37, characterized in that, The downlink transmission includes the transmission of at least one of the following: PDSCH, Physical Downlink Control Channel (PDCCH), and downlink reference signal; The uplink transmission includes the transmission of at least one of the following: PUSCH, Physical Uplink Control Channel (PUCCH), and Uplink Reference Signal.

39. A quasi-co-located QCL indicating device, characterized in that, The device includes: An information receiving module is configured to receive first information, which indicates at least one first transmission configuration indicating TCI state and at least one set of second TCI states; wherein each first TCI state indicates a QCL parameter shared by downlink and uplink transmissions, and each set of second TCI states indicates at least one of downlink-specific QCL parameters and uplink-specific QCL parameters; each set of second TCI states includes one or two second TCI states, each second TCI state indicating either the downlink-specific QCL parameter or the uplink-specific QCL parameter; one first TCI state indicates the QCL parameter corresponding to one multiple transmit / receive point (TRP), and a set of second TCI states indicates the QCL parameter corresponding to another TRP; the first information includes a second MAC CE and downlink control information DCI, the second MAC... The CE activates at least one first TCI state and at least one set of second TCI states corresponding to multiple code points, respectively, and the DCI indicates one of the multiple code points; the first information includes at least one set of information fields, each set of information fields including a third information field and a fourth information field; the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are the same; or the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different; when the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to downlink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to uplink transmission; or, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to uplink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to downlink transmission.

40. The apparatus according to claim 39, characterized in that, The first information includes a first media access layer control unit (MAC CE), wherein the first MAC CE activates at least one first TCI state and at least one set of second TCI states corresponding to a code point.

41. The apparatus according to claim 39 or 40, characterized in that, The information receiving module is also configured to receive second information, which indicates the type of TCI state contained in the first information.

42. The apparatus according to claim 41, characterized in that, The second piece of information is MAC CE.

43. The apparatus according to claim 39, characterized in that, The DCI is also used to indicate the type of TCI state contained in the first information.

44. A quasi-co-located QCL indicating device, characterized in that, The device includes: An information sending module is configured to send first information, which indicates at least one first transmission configuration indication (TCI) state and at least one set of second TCI states; wherein each first TCI state indicates a QCL parameter shared by downlink and uplink transmissions, and each set of second TCI states indicates at least one of downlink-specific QCL parameters and uplink-specific QCL parameters; each set of second TCI states includes one or two second TCI states, each second TCI state indicating either the downlink-specific QCL parameter or the uplink-specific QCL parameter; one first TCI state indicates the QCL parameter corresponding to one multiple transmit / receive point (TRP), and a set of second TCI states indicates the QCL parameter corresponding to another TRP; the first information includes a second MAC CE and downlink control information (DCI), the second MAC... The CE activates at least one first TCI state and at least one set of second TCI states corresponding to multiple code points, respectively, and the DCI indicates one of the multiple code points; the first information includes at least one set of information fields, each set of information fields including a third information field and a fourth information field; the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are the same; or the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different; when the two TCI states carried in the third information field and the fourth information field belonging to the same set of information fields are different, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to downlink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to uplink transmission; or, the second TCI state carried in the third information field is used to indicate a QCL parameter dedicated to uplink transmission, and the second TCI state carried in the fourth information field is used to indicate a QCL parameter dedicated to downlink transmission.

45. The apparatus according to claim 44, characterized in that, The first information includes a first media access layer control unit (MAC CE), wherein the first MAC CE activates at least one first TCI state and at least one set of second TCI states corresponding to a code point.

46. ​​The apparatus according to claim 44 or 45, characterized in that, The information sending module is also configured to send a second message, the second message being used to indicate the type of TCI state contained in the first message.

47. The apparatus according to claim 46, characterized in that, The second piece of information is MAC CE.

48. The apparatus according to claim 44, characterized in that, The DCI is also used to indicate the type of TCI state contained in the first information.

49. A communication device, characterized in that, The communication device includes: processor; Memory used to store processor-executable instructions; The processor is configured to load and execute the executable instructions to implement the quasi-co-address QCL indication method according to any one of claims 1 to 19, or to implement the quasi-co-address QCL indication method according to any one of claims 20 to 38.

50. A computer-readable storage medium, characterized in that, When the instructions in the computer-readable storage medium are executed by a processor, the quasi-co-located QCL indication method as described in any one of claims 1 to 19, or the quasi-co-located QCL indication method as described in any one of claims 20 to 38, is implemented.

51. A chip, characterized in that, The chip includes programmable logic circuitry and / or program instructions, which, when the chip is running on a communication device, implement the quasi-co-address QCL indication method as described in any one of claims 1 to 19, or implement the quasi-co-address QCL indication method as described in any one of claims 20 to 38.

52. A computer program product, characterized in that, When the computer program product is executed by a processor, it implements the quasi-co-located QCL indication method as described in any one of claims 1 to 19, or the quasi-co-located QCL indication method as described in any one of claims 20 to 38.

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