Method and apparatus for determining a pseudo collocation hypothesis, storage medium, and electronic device

Abstract

The present disclosure provides a method and apparatus for determining a quasi-co-location assumption, a storage medium, and an electronic device, the method including a step of determining, by a second communication node, a quasi-co-location QCL assumption for a target downlink reference signal or channel of a second type of component carrier CC or BWP based on a transmission configuration instruction TCI state instructed by a first communication node to receive a target downlink reference signal or channel of the second type of component carrier CC or BWP, the TCI state being associated with at least one of configuration information: a first source reference signal, a second source reference signal, an offset amount set for the first source reference signal, and a CC or BWP index set corresponding to the offset amount for the first source reference signal, the first source reference signal being a source reference signal transmitted on the first type of CC or BWP and providing a first QCL type, the second source reference signal being a source reference signal of a second QCL type transmitted on the second type of CC or BWP, and the first type of CC or BWP and the second type of CC or BWP being configured to belong to the same CC group or BWP group.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and specifically, to a method and apparatus for determining a quasi-collocation assumption, a storage medium, and an electronic device.

Background Art

[0002] A beam indication method, particularly, an indication of a reception beam of a physical downlink reference signal or channel such as a PDCCH (Physical Downlink Control Channel), a PDSCH (Physical Downlink Shared Channel), a CSI-RS (Channel State Information Reference Signals), etc. The specific method is, first, to activate one TCI (Transmission Configuration Indication) state or select one set of TCI states by one MAC (Medium Access Control)-CE (Control Element) signaling, and then, based on the TCI state, determine a quasi-collocation (QCL) assumption of a target downlink reference signal or channel. Specifically, it is to determine the reception beam of the target downlink reference signal or channel based on a source reference signal set to QCL-Type D associated with the TCI state.

[0003] The whole process is limited to a single serving cell or a component carrier (CC) or a part of the bandwidth part (BWP).

[0004] However, in the CA (Carrier Aggregation) scenario, the User Equipment (UE) may support up to 16 CCs or BWPs in the downlink connection. In this case, for the beam indication of PDCCH, PDSCH, and CSI-RS in all CCs or BWPs, in each CC or BWP, it is necessary to activate (or select a set of TCI states) one TCI state by one MAC-CE signaling.

[0005] Thus, up to 16 MAC-CE signalings are required. For example, since the 16 TCI states activated by 16 MAC-CE signalings for the PDCCHs in 16 CCs or BWPs indicate the same beam, the signaling overhead becomes large. Currently, there is no effective solution to the above problems in the related art.

Summary of the Invention

Problems to be Solved by the Invention

[0006] In order to at least solve the problem in the related art that the signaling overhead becomes large because it is necessary to activate one TCI state or a subset of TCI states by one MAC-CE signaling in each of the respective CCs for the beam indication of PDCCH, PDSCH, and CSI-RS, embodiments of the present disclosure provide a method and apparatus for determining a quasi-collocation assumption, a storage medium, and an electronic device.

Means for Solving the Problems

[0007] According to an embodiment of the present disclosure, a method for determining a quasi-collocation assumption is provided. A second communication node determines a QCL assumption of a target downlink reference signal or channel of a second type of CC or BWP based on a transmission configuration indication (TCI) state indicated for a first communication node to receive a target downlink reference signal or channel of a second type of component carrier (CC) or a partial bandwidth part (BWP). The indicated TCI state is associated with at least one piece of configuration information among a first source reference signal, a second source reference signal, a set of offset amounts of the first source reference signal, and a set of CC or BWP indexes corresponding to the offset amounts of the first source reference signal. The first source reference signal is a source reference signal transmitted on a first type of CC or BWP and providing a first QCL type. The second source reference signal is a source reference signal transmitted on a CC or BWP of the 1 type and 、 providing a second QCL type. The first type of CC or BWP and the second type of CC or BWP are configured in the same CC group or BWP group. to provide

[0008] According to another aspect of the present disclosure, a beam indicating apparatus is provided. A determination module is used to determine a QCL assumption of a target downlink reference signal or channel of a second type of CC or BWP based on a transmission configuration indication (TCI) state indicated for a first communication node to receive a target downlink reference signal or channel of a second type of component carrier (CC) or a partial bandwidth part (BWP). The indicated TCI state is associated with at least one piece of configuration information among a first source reference signal, a second source reference signal, a set of offset amounts of the first source reference signal, and a set of CC or BWP indexes corresponding to the offset amounts of the first source reference signal. The first source reference signal is a source reference signal transmitted on a first type of CC or BWP and providing a first QCL type. The second source reference signal is a source reference signal transmitted on a first type of CC or BWP and 、 providing a second QCL type. to provideIt is a source reference signal, and the first type of CC or BWP and the second type of CC or BWP are set in the same CC group or BWP group.

Advantages of the Invention

[0009] According to the present disclosure, the second communication node determines the QCL assumption of the target downlink reference signal or channel of the second type of CC or BWP based on the transmission configuration indication (TCI) state instructed for the first communication node to receive the target downlink reference signal or channel of the second type of component carrier (CC) or a part of the bandwidth part (BWP). The instructed TCI state is associated with at least one setting information among a first source reference signal, a second source reference signal, a set of offset amounts of the first source reference signal, and a set of CC or BWP indexes corresponding to the offset amount of the first source reference signal. The first source reference signal is a source reference signal transmitted on the first type of CC or BWP and providing a first QCL type. The second source reference signal is transmitted on the first type of CC or BWP 、 A second QCL type to provide It is a source reference signal, and the first type of CC or BWP and the second type of CC or BWP are set in the same CC group or BWP group. For the beam indication of PDCCH, PDSCH, and CSI-RS in all CCs, it is necessary to activate one TCI state or a subset of TCI states by one MAC-CE signaling on each CC, thus solving the problem in the related art that the signaling overhead is large.

Brief Description of the Drawings

[0010]

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Embodiments for Carrying Out the Invention

[0011] Hereinafter, the present disclosure will be described in detail based on embodiments with reference to the drawings.

[0012] Note that in the description, claims, and drawings of the present disclosure, terms such as "first" and "second" are not used to describe a specified order or sequence, but are used to distinguish similar objects.

[0013] Examples of the method according to the embodiments of the present disclosure can be executed on a mobile terminal, a computer terminal, or a similar computing device. Taking execution on a mobile terminal as an example, FIG. 1 is a block diagram of the hardware configuration of a mobile terminal for a method of determining a pseudo-collocation hypothesis according to an embodiment of the present invention.

[0014] As shown in FIG. 1, the mobile terminal 10 can include one or more (only one is shown in FIG. 1) processors 102 (the processor 102 can include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), and a memory 104 for storing data. Preferably, the mobile terminal can further include a transmission device 106 and an input / output device 108 for communication.

[0015] Those skilled in the art can understand that the configuration shown in FIG. 1 is merely exemplary and does not limit the configuration of the mobile terminal. For example, the mobile terminal 10 may include more or fewer elements than those shown in FIG. 1, or may have a configuration different from that shown in FIG. 1.

[0016] The memory 104 is used to store software programs and modules of application software such as computer programs corresponding to the method of determining a pseudo-collocation hypothesis in the embodiments of the present invention. The processor 102 performs various functional applications and data processing by executing the computer programs stored in the memory 104, that is, realizes the above method.

[0017] Memory 104 can include high-speed random memory and can further include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.

[0018] In some embodiments, memory 104 can further include memory provided remotely from processor 102, and these remote memories can be connected to mobile terminal 10 via a network. Examples of the above network include, but are not limited to, the Internet, intranet, local area network, mobile communication network, and combinations thereof.

[0019] Transmission device 106 is used to receive or transmit data via a network. Specific examples of the above network can include a wireless network provided by a communication vendor of mobile terminal 10. In one embodiment, transmission device 106 includes a network adapter (Network Interface Controller, abbreviated as NIC) that is connected to other network devices via a base station and can communicate with the Internet. In one embodiment, transmission device 106 may be a radio frequency (RF) module for communicating with the Internet in a wireless manner.

[0020] In this embodiment, a method for determining a virtual collocation hypothesis executed in the above mobile terminal or network architecture is provided. FIG. 2 is a flowchart of a method for determining a virtual collocation hypothesis according to an embodiment of the present disclosure. As shown in FIG. 2, the process includes step 202.

[0021] In step S202, the second communication node determines a QCL hypothesis for the target downlink reference signal or channel of the second type of CC or BWP based on the transmission configuration indication (TCI) state instructed for the first communication node to receive the target downlink reference signal or channel of the second type of component carrier (CC) or a part of the bandwidth part (BWP). The indicated TCI state is associated with at least one piece of configuration information among a first source reference signal, a second source reference signal, an offset amount setting of the first source reference signal, and a CC or BWP index set corresponding to the offset amount of the first source reference signal.

[0022] The first source reference signal is a source reference signal transmitted on a first type of CC or BWP and providing a first QCL type, the second source reference signal is a source reference signal of a second QCL type transmitted on the first type of CC or BWP, and the first type of CC or BWP and the second type of CC or BWP are set in the same CC group or BWP group.

[0023] In one embodiment, the steps of the method of the present disclosure may further include a step in which a second communication node determines a third source reference signal according to the configuration information associated with the indicated TCI state and a predetermined rule, the predetermined rule includes at least one of a first predetermined rule, a second predetermined rule, and a third predetermined rule, and the third source reference signal is a source reference signal transmitted on a second type of CC or BWP and providing a first QCL type of a target downlink reference signal or channel.

[0024] In one embodiment of the present disclosure, the steps of the method of the present disclosure may further include a step in which a second communication node determines a third source reference signal according to the first source reference signal associated with the indicated TCI state and the first predetermined rule. The first predetermined rule includes a rule in which the first source reference signal is set as a reference signal for the third source reference signal, a rule in which the first source reference signal is set as a reference signal for the first reference signal associated with the third source reference signal, a rule in which the first source reference signal is set to the second QCL type of the TCI state applied to the third source reference signal, a rule in which the first source reference signal is set to the second QCL type of the TCI state applied to the first reference signal associated with the third source reference signal, a rule in which the second reference signal associated with the first source reference signal is set to the second QCL type of the TCI state applied to the third source reference signal, a rule in which the fourth source reference signal is set to the second QCL type of the TCI state applied to the third source reference signal, and a rule in which the fourth source reference signal is set to the second QCL type of the TCI state applied to the first reference signal associated with the third source reference signal.

[0025] The first reference signal includes periodic CSI-RS transmitted on the second type of CC or BWP, the second reference signal includes periodic CSI-RSS transmitted on the first type of CC or BWP, and the fourth source reference signal is set to the second QCL type of the TCI state applied to the first source reference signal.

[0026] In one embodiment of the present disclosure, the steps of the method of the present disclosure may further include a step in which the second communication node determines a third source reference signal according to the second source reference signal associated with the indicated TCI state and the second predetermined rule. The second predetermined rule includes at least one of a rule in which the second source reference signal is set to the second QCL type of the TCI state applied to the third source reference signal and a rule in which the second source reference signal is set to the second QCL type of the TCI state applied to the first reference signal associated with the third source reference signal. The first reference signal includes periodic CSI-RS transmitted on the second type of CC or BWP, and the second source reference signal is set to the first QCL type and the second QCL type of the TCI state applied to the third source reference signal.

[0027] In one embodiment of the present disclosure, the steps of the method of the present disclosure may further include a step in which a second communication node determines a third source reference signal according to a first source reference signal or a second source reference signal associated with an indicated TCI state and a third predetermined rule. The third predetermined rule includes at least one of a rule in which a first source reference signal or a second source reference signal is set to a first QCL type of a TCI state to which the third source reference signal is applied, a rule in which a first source reference signal or a second source reference signal is set to a second QCL type of a TCI state to which the third source reference signal is applied, and a rule in which a first source reference signal or a second source reference signal is set to a first QCL type and a second QCL type of a TCI state to which the third source reference signal is applied.

[0028] Note that the first source reference signal or the second source reference signal includes an SSB transmitted on a CC of a first type.

[0029] In one embodiment of the present disclosure, the steps of the method of the present disclosure may further include a step in which a second communication node determines a third source reference signal based on a first source reference signal associated with an indicated TCI state, an offset amount set of the first source reference signal, and a CC or BWP index set corresponding to the offset amount of the first source reference signal.

[0030] In one embodiment of the present disclosure, the steps of the method of the present disclosure may further include a step in which, when a first predetermined condition is satisfied, the second communication node determines a fifth source reference signal based on a reference signal set to a second QCL type of a TCI state of a CORESET for scheduling a target downlink reference signal or a channel of a second type of CC or BWP on a first type of CC or BWP.

[0031] The fifth source reference signal is a source reference signal that is transmitted on a CC or BWP of the first type or a CC or BWP of the second type and provides a second QCL type of a target downlink reference signal or channel.

[0032] In one embodiment of the present disclosure, when the steps of the method of the present disclosure satisfy a first predetermined condition, the second communication node may further include a step of determining a fifth source reference signal based on a reference signal set to a second QCL type of the TCI state of a CORESET having a minimum CORESET ID on a CC of the first type.

[0033] In one embodiment of the present disclosure, when the steps of the method of the present disclosure satisfy a first predetermined condition, the second communication node may further include a step of determining a QCL assumption of a target downlink reference signal or channel of a CC or BWP of the second type based on a preliminary TCI state instructed for the first communication node to receive a target downlink reference signal or channel of the CC or BWP of the second type. At least one piece of setting information among a first source reference signal, a second source reference signal, an offset amount set of the first source reference signal, and a CC or BWP index set corresponding to the offset amount of the first source reference signal is associated with the preliminary TCI state.

[0034] In one embodiment of the present disclosure, the first predetermined condition in the present disclosure includes a condition that a time interval between a target downlink reference signal or channel in a CC or BWP of the second type and a CORESET that schedules the target downlink reference signal or channel is less than a predetermined threshold.

[0035] In one embodiment of the present disclosure, the steps of the method of the present disclosure may further include a step in which a second communication node determines a first source reference signal and a third source reference signal according to a fourth predetermined rule, where the third source reference signal is a source reference signal that is transmitted on a second type of CC or BWP and provides a first QCL type of a target downlink reference signal or channel.

[0036] The fourth predetermined rule includes a rule that the first source reference signal is transmitted on a first type of CC or BWP, has a minimum CSI-RS resource ID, and is a CSI-RS with TRS-Info set, and a rule that the third source reference signal is transmitted on a second type of CC or BWP, has a minimum CSI-RS resource ID, and is a CSI-RS with TRS-Info set.

[0037] In one embodiment of the present disclosure, the steps of the method of the present disclosure may further include a step in which the second communication node determines the TCI state to be indicated based on a first TCI state in a set of TCI states set by the first communication node for a reference CC or BWP before receiving the TCI state indicated by the first communication node for the target downlink reference signal or channel of the second type of CC or BWP. At least one piece of setting information among the first source reference signal, the second source reference signal, a set of offset amounts of the first source reference signal, and a set of CC or BWP indexes corresponding to the offset amounts of the first source reference signal is associated with the first TCI state, and the reference CC or BWP, the first type of CC or BWP, and the second type of CC or BWP are set in the same CC group or BWP group.

[0038] In one embodiment of the present disclosure, the second communication node can obtain the first TCI state by at least one of a method in which the first TCI state is the first TCI state in the set of TCI states and a method in which the first communication node activates the first TCI state from the set of TCI states by an active command.

[0039] In one embodiment of the present disclosure, the reference CC or BWP includes at least one of the CC or BWP having the minimum CC or BWP index within the CC group or BWP group, the CC group or BWP group having the minimum interval from the second type of CC or BWP index within the CC group or BWP group, and the CC group or BWP closest to the frequency domain position of the second type of CC or BWP within the CC group or BWP group.

[0040] From the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above-described embodiments may be implemented by a combination of software and a necessary general-purpose hardware platform. Of course, it may also be implemented by hardware. In many cases, however, the former is a more preferred embodiment.

[0041] Based on such an understanding, the technical solution of the present disclosure can be embodied as a software product in essence or in the part that contributes to the prior art. This computer software product is stored in a storage medium (for example, ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the method described in each embodiment of the present disclosure.

[0042] In this embodiment, a determination device for a virtual collocation assumption for realizing the above embodiment and preferred embodiments is further provided, and the description thereof will be omitted. As used below, the term "module" can realize a combination of software and / or hardware with a predetermined function. The devices described in the following embodiments are preferably realized by software, but it is also conceivable to be realized by hardware or a combination of software and hardware.

[0043] FIG. 3 is a schematic configuration diagram of a pseudo-collocation assumption determination device according to the present disclosure, which is applied to the second communication node side. As shown in FIG. 3, the device includes: a determination module 32 configured to determine a QCL assumption of a target downlink reference signal or channel of a second type of CC or BWP based on a transmission configuration indication (TCI) state instructed for a first communication node to receive a target downlink reference signal or channel of a second type of component carrier (CC) or a part of bandwidth part (BWP); at least one piece of configuration information of a first source reference signal, a second source reference signal, a set of offset amounts of the first source reference signal, and a set of CC or BWP indexes corresponding to the offset amounts of the first source reference signal is associated with the instructed TCI state.

[0044] The first source reference signal is a source reference signal transmitted on a first type of CC or BWP and providing a first QCL type. The second source reference signal is a source reference signal transmitted on the first type of CC or BWP 、 and providing a second QCL type. The first type of CC or BWP and the second type of CC or BWP are set in the same CC group or BWP group. to provide It should be noted that each of the above modules can be implemented by software or hardware. For the latter, it can be implemented as follows, but is not limited thereto. All of the above modules are located in the same processor, or each of the above modules is located in different processors in any combination.

[0045]

[0046] Based on some embodiments of the present disclosure, Examples 1 to 8 of the present disclosure will be described below. Example 1 In this example, a method for setting a CC or BWP group is provided, and the method for setting a CC or BWP group can include at least one of 1) to 4).

[0047] 1) Designate all CCs or BWPs within a wideband as one CC or BWP group. 2) The base station sets the CC or BWP group by means of RRC signaling.

[0048] 3) The UE reports the CC or BWP group as an ability. For example, if different CCs or BWPs transmit downlink reference signals or channels (e.g., CSI-RS, PDCCH, PDSCH) to the same UE and the time-domain positions of these downlink channels or signals overlap (e.g., the start positions overlap), the UE can report the CC or BWP indexes associated with these downlink channels or signals, that is, the CC or BWP group includes the CCs or BWPs corresponding to these CC or BWP indexes.

[0049] 4) After measurement, the UE reports the CC or BWP group. For example, after measuring CSI, if the UE discovers that several CCs or BWPs have the same optimal reception beam, it can report the indexes of these CCs or BWPs, that is, the CC or BWP group includes the CCs or BWPs corresponding to these CC or BWP indexes.

[0050] Furthermore, the number of CCs or BWPs included in one CC or BWP group is N max or less, where N max is the maximum number of CCs or BWPs that the UE can support.

[0051] For the sake of convenience in description, the CCs according to the following embodiments represent CCs or BWPs, and the CC groups represent CC or BWP groups.

[0052] It should be noted that Preferred Embodiments 2 to 5 relate to a method for determining the PDSCH pseudo-collocation assumption, and are not limited to the PDSCH. Similarly, they can also be applied to the determination of the pseudo-collocation assumption of the PDCCH and the CSI-RS for obtaining CSI.

[0053] Example 2 In this example, a method for determining the PDSCH quasi-collocation assumption of the CC group is provided. The CC group is assumed to include CC 1 and CC 2. SSB 1 and CSI-RS 1 are transmitted on CC 1, and CSI-RS 2 is transmitted on CC 2. The base station indicates one TCI state for receiving the target PDSCH of the CC group. The TCI state is associated with setting information of a first source reference signal and a second source reference signal.

[0054] The first source reference signal is a source reference signal transmitted on a first type of CC 、 The first QCL type to provide The source reference signal, and the second source reference signal is a source reference signal transmitted on a first type of CC 、 The second QCL type to provide The source reference signal, and here, the first source reference signal and the second source reference signal are respectively set as SSB 1 and CSI-RS 1.

[0055] The first type of CC may be the CC with the minimum CC index or the primary service cell (PCell) within the CC group, that is, CC 1. The first QCL type is QCL-Type A, indicating that the target reference signal and the source reference signal have the same demodulation parameters (for example, Doppler frequency shift, Doppler spread, average delay, delay spread).

[0056] The second QCL type is QCL-Type D, indicating that the target reference signal and the source reference signal have the same reception spatial parameters, that is, the same reception beam. SSB 1 is set to QCL-Type D applied to CSI-RS 1, that is, SSB 1 and CSI-RS 1 have the same reception beam.

[0057] When the UE receives the above-indicated TCI state, SSB 1 is used for the target PDSCH of the first type of CC and the second type of CC with QCL-TypeA Provide (i.e., the source reference signal of QCL-Type D for the target PDSCH of the second type of CC is determined based on the second source reference signal, which is SSB 1 and applicable to Embodiments 2 to 5).

[0058] The second type of CC may be a CC other than the first type of CC within the CC group, e.g., CC 2, i.e., the PDSCH of the first type of CC, the PDSCH of the second type of CC, and SSB 1 have the same reception beam.

[0059] CSI-RS 1 provides QCL-Type D for the target PDSCH of the first type of CC, i.e., the target PDSCH of the first type of CC and CSI-RS 1 have the same demodulation parameters.

[0060] For the first QCL type, e.g., QCL-Type A, of the target PDSCH of the second type of CC, the UE can determine the third source reference signal according to the first source reference signal (SSB 1) associated with the indicated TCI state and the first predetermined rule.

[0061] The third source reference signal is transmitted on CC 2 (denoted as CSI-RS 2) and provides QCL-Type A for the target PDSCH of the second type of CC, i.e., the target PDSCH of the second type of CC and CSI-RS 2 have the same demodulation parameters.

[0062] Furthermore, the first predetermined rule may include at least one of the following rules.

[0063] 1) As shown in FIG. 4, the first source reference signal (SSB 1) is set as the reference signal of the third source reference signal (CSI-RS 2), i.e., SSB 1 and CSI-RS 2 have a mapping relationship. 2) As shown in FIG. 5, the first source reference signal (SSB 1) is set to QCL-Type D of the TCI state applied to the third source reference signal (CSI-RS 2).

[0064] 3) As shown in FIG. 6, the first source reference signal (SSB 1) is set to QCL-Type C and QCL-Type D of the TCI state applied to the third source reference signal (CSI-RS 2), where QCL-Type C indicates that the target downlink reference signal, the channel, and the source reference signal have the same synchronization parameters (e.g., average delay and Doppler frequency shift).

[0065] When the first source reference signal is CSI-RS 3 transmitted on CC 1 and SSB 1 (referred to as the fourth source reference signal) is set to QCL-Type D of the TCI state applied to the first source reference signal (CSI-RS 3), the UE can determine the third source reference signal according to the fourth source reference signal (SSB 1) associated with the indicated TCI state and the following (first) predetermined rule.

[0066] 4) As shown in FIG. 7, the fourth source reference signal (SSB 1) is set to QCL-Type D applied to the third source reference signal (CSI-RS 2).

[0067] Furthermore, when CSI-RS 2 is an aperiodic CSI-RS and is associated with one periodic reference signal CSI-RS 4, the UE can determine the third source reference signal according to the first source reference signal (SSB 1) associated with the indicated TCI state and the following (first) predetermined rule.

[0068] 5) Similar to Rule 1), the first source reference signal (SSB 1) is set as the reference signal of the first reference signal (CSI-RS 4) associated with the third source reference signal (CSI-RS 2), that is, SSB 1 and CSI-RS 4 have a mapping relationship.

[0069] 6) Similar to Rule 2), the first source reference signal (SSB 1) is set to QCL-Type D of the TCI state applied to the first reference signal (CSI-RS 4) associated with the third source reference signal (CSI-RS 2).

[0070] 7) Similar to Rule 4), the fourth source reference signal (SSB 1) is set to QCL-Type D applied to the first reference signal (CSI-RS 4) associated with the third source reference signal (CSI-RS 2).

[0071] Furthermore, when the first source reference signal is CSI-RS 5, it is associated with one second reference signal CSI-RS 6 (for example, one periodic CSI-RS 6), and the third source reference signal CSI-RS 2 is an aperiodic CSI-RS, the UE can determine the third source reference signal according to the first source reference signal (CSI-RS 5) associated with the indicated TCI state and the following (first) predetermined rule.

[0072] 8) As shown in Figure 8, the second reference signal (CSI-RS 6) associated with the first source reference signal (CSI-RS 5) is set to QCL-Type C applied to the third source reference signal (CSI-RS 2).

[0073] 9) As shown in Figure 8, the second reference signal (CSI-RS 6) associated with the first source reference signal (CSI-RS 5) is set to QCL-Type D applied to the third source reference signal (CSI-RS 2).

[0074] And the UE can further determine the third source reference signal according to the second source reference signal (CSI-RS1) associated with the indicated TCI state and the second predetermined rule.

[0075] Furthermore, the second predetermined rule can include at least one of the following rules. 1) As shown in FIG. 9, the second source reference signal (CSI-RS 1) is set to QCL-Type D of the TCI state applied to the third source reference signal (CSI-RS 2).

[0076] Furthermore, if the time domain type of CSI-RS 2 is set aperiodically and is associated with one periodic reference signal CSI-RS 7, the UE can determine the third source reference signal according to the second source reference signal (CSI-RS 1) associated with the indicated TCI state and the following (second) predetermined rule.

[0077] 2) Similar to Rule 1), the second source reference signal (CSI-RS 1) is set to QCL-Type D of the TCI state applied to the third reference signal (CSI-RS 7) associated with the third source reference signal (CSI-RS 2).

[0078] Embodiment 3 In this embodiment, a method for determining the PDSCH pseudo-collocation assumption of a CC group is provided. The CC group is assumed to include CC 1 and CC 2. SSB 1 is transmitted on CC 1, CSI-RS 1 is transmitted on CC 2, and the base station indicates one TCI state for receiving the target PDSCH of the CC group. The TCI state is associated with configuration information such as a first source reference signal and a second source reference signal.

[0079] The first source reference signal is a source reference signal transmitted on a first type of CC 、 and the first QCL type to provide The second source reference signal is a source reference signal transmitted on a first type of CC 、 and the second QCL type to provide is a source reference signal.

[0080] Here, the first source reference signal and the second source reference signal are set as SSB 1. The first type of CC may be the CC with the minimum CC index within the CC group or the primary service cell (PCell), that is, CC 1.

[0081] The first QCL type is QCL-Type C, and the second QCL type is QCL-Type D. When the UE receives the above-mentioned indicated TCI state, SSB 1 provides QCL-Type D for the target PDSCH of the first type of CC and the second type of CC. The second type of CC may be a CC other than the first type of CC within the CC group, that is, the PDSCH of the first type of CC, the PDSCH of the second type of CC, and SSB 1 have the same receive beam.

[0082] SSB 1 provides QCL-Type C for the target PDSCH of the first type of CC, that is, the target PDSCH of the first type of CC and SSB 1 have the same synchronization parameter. For the first QCL type, for example, QCL-Type C, of the target PDSCH of the second type of CC, the UE can determine the third source reference signal according to the first source reference signal or the second source reference signal (SSB 1) associated with the indicated TCI state and the third predetermined rule.

[0083] The third source reference signal is transmitted on CC 2 (referred to as CSI-RS 1), and provides QCL-Type C for the target PDSCH of the second type of CC, that is, the target PDSCH of the second type of CC and CSI-RS 1 have the same synchronization parameter.

[0084] Furthermore, the third predetermined rule can include at least one of the following rules. 1) The first source reference signal (SSB 1) or the second source reference signal (SSB 1) is set to QCL-Type C of the third source reference signal (CSI-RS 1). 2) The first source reference signal (SSB 1) or the second source reference signal (SSB 1) is set to QCL-Type D of the third source reference signal (CSI-RS 1).

[0085] 3) As shown in FIG. 10, the first source reference signal (SSB 1) or the second source reference signal (SSB 1) is set to QCL-Type C and QCL-Type D of the third source reference signal (CSI-RS 1).

[0086] Furthermore, the first source reference signal and the second source reference signal can only include SSB.

[0087] Example 4 In this example, a method for determining the PDSCH quasi-collocation assumption of the CC group is provided. Assume that the CC group includes CC 1 and CC 2. CSI-RS 1 and CSI-RS 2 are transmitted on CC 1, CSI-RS 3 is transmitted on CC 2, and CSI-RS 1 and CSI-RS 3 are from the same CSI-RS set.

[0088] The base station indicates one TCI state for receiving the target PDSCH of the CC group. The TCI state is associated with the following configuration information: the first source reference signal (CSI-RS 1), the second source reference signal (CSI-RS 2), the offset amount set {2} of the first source reference signal, and the CC index set {2} corresponding to the offset amount of the first source reference signal.

[0089] The first source reference signal is a source reference signal transmitted on the first type of CC 、 The first QCL type to provide The second source reference signal is a source reference signal transmitted on the first type of CC 、 The second QCL type to provideIt is a source reference signal. The first type of CC may be the CC with the minimum CC index or the primary service cell (PCell) within the CC group, i.e., CC 1. The first QCL type is QCL-Type A or QCL-Type C (here, the first QCL type is set as QCL-Type A), and the second QCL type is QCL-Type D.

[0090] The CCs included in the CC index set corresponding to the first source reference signal offset amount belong to the second type of CC, and the Elements included in the offset amount setting first source reference signal indicates the difference value between the third source reference signal index of these CCs and the first source reference signal index. The elements included in the offset amount set of the first source reference signal and the elements included in the CC index set corresponding to the offset amount of the first source reference signal are in one-to-one correspondence.

[0091] The third source reference signal is transmitted on the second type of CC and provides the source reference signal of the first QCL type for the target PDSCH of the second type of CC.

[0092] Furthermore, the third source reference signal and the first source reference signal belong to the same reference signal set. When the UE receives the above-indicated TCI state, CSI-RS 2 provides QCL-Type D for the target PDSCHs of the first type of CC and the second type of CC, that is, the PDSCH of the first type of CC, the PDSCH of the second type of CC, and CSI-RS 2 have the same received beam.

[0093] The second type of CC may be a CC other than the first type of CC within the CC group. CSI-RS 1 provides QCL-Type A for the target PDSCH of the first type of CC, that is, the target PDSCH of the first type of CC and CSI-RS 1 have the same demodulation parameters. For the first QCL type, e.g., QCL-Type A, of the target PDSCH of the second type of CC, the UE can determine a third source reference signal based on the first source reference signal associated with the indicated TCI state, the set of offset amounts of the first source reference signal, and the set of CC indexes corresponding to the offset amounts of the first source reference signal.

[0094] Specifically, as can be seen from the set of CC indexes {2} corresponding to the offset amount of the first source reference signal and the set of offset amounts {2} of the first source reference signal, the third source reference signal is CSI-RS 1+2 transmitted on CC 2, i.e., CSI-RS 3.

[0095] Embodiment 5 In this embodiment, a method for determining the PDSCH quasi-collocation assumption of a CC group is provided. Assume that the CC group includes CC 1 and CC 2. CSI-RS 1, CSI-RS 2, CSI-RS 3, CSI-RS 4, CSI-RS 5 are transmitted on CC 1, CSI-RS 6, CSI-RS 7, CSI-RS 8, CSI-RS 9, CSI-RS 10 are transmitted on CC 2, and TRS-Info is set for CSI-RS 1, CSI-RS 2, CSI-RS 3, CSI-RS 6, CSI-RS 7, CSI-RS 8.

[0096] The base station indicates one TCI state for receiving the target PDSCH of the CC group. The set information of the first source reference signal and the second source reference signal (CSI-RS 3) is associated with the TCI state. The first source reference signal is transmitted on the first type of CC 、 The first QCL type (e.g., QCL-Type A) to provideIt is a source reference signal, and the second source reference signal is transmitted on the CC of the first type 、 The second QCL type (e.g., QCL-Type D) to provide It is a source reference signal.

[0097] The CC of the first type may be the CC with the minimum CC index or the primary service cell (PCell) within the CC group, that is, CC 1. When the UE receives the above indicated TCI state, CSI-RS 2 provides QCL-Type D for the target PDSCHs of the CC of the first type and the CC of the second type, that is, the PDSCH of the CC of the first type, the PDSCH of the CC of the second type, and CSI-RS 2 have the same reception beam.

[0098] The CC of the second type may be a CC other than the CC of the first type within the CC group. For QCL-Type A of the target PDSCHs of the CC of the first type and the CC of the second type, the UE can determine the first source reference signal and the third source reference signal according to the fourth predetermined rule. The third source reference signal provides QCL-Type C for the target PDSCH of the CC of the second type, that is, the target PDSCH of the CC of the second type and the third source reference signal have the same synchronization parameter.

[0099] Furthermore, the fourth predetermined rule includes 1) and 2). 1) The first source reference signal is transmitted on the CC of the first type, has the minimum CSI-RS resource ID, and is a CSI-RS with TRS-Info set. 2) The third source reference signal is transmitted on the CC of the second type, has the minimum CSI-RS resource ID, and is a CSI-RS with TRS-Info set.

[0100] Therefore, the UE can determine that the first source reference signal is CSI-RS 1 and the third source reference signal is CSI-RS 5 according to the fourth predetermined rule.

[0101] Example 6 In this embodiment, a method for obtaining a TCI state is provided. The preferred embodiment is applicable to the cases of Preferred Embodiments 2 to 5, but is not limited to the cases related to these embodiments.

[0102] Before the base station indicates the TCI state for receiving the target PDSCH of the second type of CC, the UE can obtain the TCI state to be indicated based on the first TCI state in the TCI state set set by the base station for the reference CC. The reference CC, the first type of CC according to Embodiments 2 to 5, and the second type of CC belong to the same CC group. At least one piece of setting information among the first source reference signal, the second source reference signal, the offset amount set of the first source reference signal, and the CC or BWP index set corresponding to the offset amount of the first source reference signal is associated with the first TCI state.

[0103] Furthermore, the UE can obtain the first TCI state by at least one of 1) and 2). 1) The first TCI state is the first TCI state in the TCI state set. 2) The base station activates one TCI state, that is, the first TCI state, from the TCI state set by one active command (for example, MAC-CE signaling).

[0104] Furthermore, the reference CC is the CC having the minimum CC index within the CC group, the CC with the smallest interval from the second type of CC index within the CC group, and can include at least one of the CCs closest to the frequency domain position of the second type of CC within the CC group.

[0105] Example 7 In this embodiment, a method for determining a PDSCH quasi-collocation assumption is provided. Assume that the assumed CC group includes CC 1 and CC 2. For the UE, three CORESETs (Control Resource Sets), namely CORESET 0, CORESET 1, and CORESET 2, are configured.

[0106] These CORESETs are located in CC 1, and the DCI located in CORESET 2 is for scheduling PDSCH 1 in CC 1 and PDSCH 2 in CC 2. The TCI states respectively indicated by the base station for receiving CORESET 0, CORESET 1, and CORESET 2 are TCI state 1, TCI state 2, and TCI state 3.

[0107] The setting information of the fifth source reference signal (referred to as CSI-RS 1) and the sixth source reference signal (referred to as CSI-RS 4) is associated with TCI state 1. The setting information of the fifth source reference signal (referred to as CSI-RS 2) and the sixth source reference signal (referred to as CSI-RS 5) is associated with TCI state 2.

[0108] The setting information of the fifth source reference signal (referred to as CSI-RS 3) and the sixth source reference signal (referred to as CSI-RS 6) is associated with TCI state 3. The fifth source reference signal is a source reference signal of the first QCL type (for example, QCL-Type A) transmitted on the first type of CC, and the sixth source reference signal is a source reference signal of the second QCL type (for example, QCL-Type D) transmitted on the first type of CC.

[0109] The first type of CC may be the CC with the smallest CC index or the primary service cell (PCell) within the CC group, that is, CC 1.

[0110] When the first predetermined condition is satisfied, the UE can determine a seventh source reference signal based on a sixth source reference signal (CSI-RS 6) associated with TCI state 3 of CORESET 2 that schedules the PDSCH in CC 2 on the first type of CC.

[0111] As shown in FIG. 11, PDSCH 2 and CSI-RS 6 have the same reception beam. The seventh source reference signal is a source reference signal that provides QCL-Type D to the target PDSCH 2 of the second type of CC. The second type of CC may be a CC other than the first type of CC within the CC group (e.g., CC 2).

[0112] Also, as shown in FIG. 12, the UE can determine the seventh source reference signal based on the sixth source reference signal (CSI-RS 4) associated with TCI state 1 of CORESET 0 having the minimum CORESET ID on the first type of CC, that is, PDSCH 2 and CSI-RS 4 have the same reception beam. The closest means the closest in the time domain to the target PDSCH.

[0113] Furthermore, the first predetermined condition is that the time interval (or scheduling offset amount) T between the target PDSCH of the second type of CC and the CORESET that schedules the target PDSCH is less than a predetermined threshold K.

[0114] Example 8 In this embodiment, a method for determining the PDSCH pseudo-collocation assumption of the CC group is provided. Assume that the CC group includes CC 1 and CC 2. The base station indicates one TCI state (herein, tentatively called the highest-priority TCI state for the time being) and one standby TCI state for receiving the target PDSCH of the CC group. Each of the highest-priority TCI state and the standby TCI state is associated with at least one of the following setting information: a first source reference signal, a second source reference signal, a set of offset amounts of the first source reference signal, and a set of CC indexes corresponding to the offset amounts of the first source reference signal.

[0115] When the first predetermined condition is satisfied, the UE can determine the third source reference signal according to the setting information associated with the indicated standby TCI state and the first, second, third, and fourth predetermined rules according to Embodiments 2 to 5.

[0116] Furthermore, the first predetermined condition includes the condition that the time interval (or scheduling offset amount) T between the target PDSCH of the second type of CC and the CORESET that schedules the target PDSCH is less than the predetermined threshold K.

[0117] The embodiment of the present invention further provides a storage medium storing a computer program, and when the computer program is executed, it is configured to execute the steps in the method embodiments described above.

[0118] Preferably, in this embodiment, the storage medium is configured to store a computer program for executing the following step S1.

[0119] In S1, based on the transmission configuration indication TCI state instructed for the first communication node to receive the target downlink reference signal or channel of the second type of component carrier CC or a part of the bandwidth BWP, determine the quasi-collocation QCL assumption of the target downlink reference signal or channel of the second type of CC or BWP.

[0120] Preferably, in this embodiment, the storage medium includes, but is not limited to, various computer program storage media such as a USB memory, a read-only memory (abbreviated as ROM), a random access memory (abbreviated as RAM), a removable hard disk, a magnetic disk, or an optical disk.

[0121] An embodiment of the present invention further provides an electronic device, including a memory and a processor, where a computer program is stored in the memory, and the processor is configured to execute the computer program to perform the steps in the method embodiment described above.

[0122] Preferably, the electronic device can further include a transmission device and an input / output device, the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0123] Preferably, in this embodiment, the processor is configured to perform the following step S1 by a computer program.

[0124] In S1, based on the transmission configuration indication TCI state instructed for the first communication node to receive the target downlink reference signal or channel of the second type of component carrier CC or a part of the bandwidth BWP, determine the quasi-collocation QCL assumption of the target downlink reference signal or channel of the second type of CC or BWP.

[0125] Obviously, as can be understood by those skilled in the art, each module or step of the above-described disclosure may be implemented by a general-purpose processing device such as a processor, may be integrated into a single processing device, or may be distributed over a network consisting of multiple processing devices.

[0126] Preferably, since they may also be implemented by program codes executable by a processing device, they may be stored in a storage device and executed by a computing device. In some cases, the steps illustrated or described may be executed in an order different from the order described herein, or each may be fabricated as an individual integrated circuit module, or a plurality of these modules or steps may be fabricated and realized as a single integrated circuit module. Thus, the present disclosure is not limited to any specified combination of hardware and software.

[0127] What has been described above is merely a preferred embodiment of the present disclosure and does not limit the present disclosure. Various changes and modifications are possible for those skilled in the art. Any amendments, equivalent replacements, improvements, etc. made within the principles of the present disclosure should be included within the protection scope of the present disclosure.

Claims

1. A method for determining a quasi-collocation assumption, comprising: A second communication node receives information on one transmission configuration indication (TCI) state corresponding to one component carrier (CC) group transmitted by a first communication node, and determines a quasi-collocation (QCL) assumption of a target downlink reference signal or channel in each CC within the one CC group based on the one TCI state. Based on RRC signaling transmitted by the first communication node, it is determined that the one CC group includes a first type of CC and a second type of CC, and the target downlink reference signal or channel includes a first target downlink reference signal or channel transmitted on the first type of CC and a second target downlink reference signal or channel transmitted on the second type of CC. The one TCI state is associated with setting information of a first source reference signal and a second source reference signal. The first source reference signal is a source reference signal transmitted on the first type of CC and providing a first QCL type to the first target downlink reference signal or channel, and the second source reference signal is a source reference signal transmitted on the first type of CC and providing a second QCL type to the first target downlink reference signal or channel. The second communication node determines a third source reference signal according to the first source reference signal associated with the one TCI state and a third predetermined rule. The third source reference signal is a source reference signal received on the second type of CC and providing a first QCL type to the second target downlink reference signal or channel. A method for determining a quasi-collocation assumption.

2. The third predetermined rule includes: A rule in which the first QCL type and the second QCL type of the TCI state to which the first source reference signal or the second source reference signal is applied are set for the third source reference signal. The method according to claim 1.

3. The method according to claim 2, wherein the first source reference signal or the second source reference signal includes a synchronization signal block (SSB) transmitted on the first type of CC.

4. A method for determining a quasi-collocation assumption, comprising: The first communication node transmits information on one TCI state to the second communication node, and the one TCI state corresponds to one component carrier CC group, and is used for the second communication node to determine the quasi-collocation QCL assumption of the target downlink reference signal or channel in each CC within the one CC group. Based on the RRC signaling sent by the first communication node, it is determined that the one CC group includes a first type of CC and a second type of CC, and the target downlink reference signal or channel includes a first target downlink reference signal or channel transmitted on the first type of CC and a second target downlink reference signal or channel transmitted on the second type of CC. The first communication node transmits the target downlink reference signal or channel of the second type of CC to the second communication node according to the quasi-collocation QCL assumption. The setting information of the first source reference signal and the second source reference signal is associated with the one TCI state. The first source reference signal is a source reference signal transmitted on the first type of CC and providing a first QCL type for the first target downlink reference signal or channel, and the second source reference signal is a source reference signal transmitted on the first type of CC and providing a second QCL type for the first target downlink reference signal or channel. The first type of CC and the second type of CC are set in the same CC group. The first communication node determines a third source reference signal according to the first source reference signal associated with the one TCI state and a third predetermined rule. The third source reference signal is a source reference signal received on the second type of CC and providing a first QCL type for the second target downlink reference signal or channel, and is a method for determining a quasi-collocation assumption.

5. An electronic device including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute the computer program to execute the method according to any one of claims 1 to 4.

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