CN114765498A

CN114765498A - BFD-RS obtaining method, device, user side equipment and storage medium

Info

Publication number: CN114765498A
Application number: CN202110054277.2A
Authority: CN
Inventors: 王化磊
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2022-07-19

Abstract

The embodiment of the application provides a BFD-RS acquisition method, a BFD-RS acquisition device, user side equipment and a storage medium, relates to the technical field of communication, and can realize the acquisition of BFD-RS based on Multi-TRP transmission of single DCI. A method for acquiring a reference signal BFD-RS (beam failure detection) is used for Multi-transmission receiving point Multi-TRP (transmission-reception-point) transmission based on single Downlink Control Information (DCI), and comprises the following steps: acquiring a BFD-RS set 0 based on the configuration of a control resource set CORESET and/or the configuration of a transmission configuration indication state TCI state activated by a Physical Downlink Shared Channel (PDSCH); and acquiring a BFD-RS set 1 based on the configuration of a control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of a Physical Downlink Shared Channel (PDSCH).

Description

BFD-RS acquisition method, device, user side equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a BFD-RS obtaining method, apparatus, user side device, and storage medium.

Background

In a New Radio (NR) system, if a situation such as signal propagation being blocked occurs, signal propagation is interrupted, a beam failure recovery procedure is required, and currently, NR protocols of R15 version and R16 version support a cell-level beam failure recovery procedure, wherein, for a partial Bandwidth (BWP) of the serving cell, if a User Equipment (UE) is not configured with a beam failure detection reference signal (BFD-RS), the UE configures a Resource index of a periodic Channel State Information Reference Signal (CSI-RS) included in a Transmission Configuration Indicator (TCI) State according to a Transmission Configuration Set (core Set) of a Control Resource Set (PDCCH) in which a monitored Physical Downlink Control Channel (PDCCH) is located, and determines a BFD-RS Set accordingly. However, for Multi-transmission and reception point (Multi-TRP) transmission based on DCI (downlink control information), there is currently no method for acquiring a BFD-RS at a TRP level.

Disclosure of Invention

The technical scheme of the application provides a BFD-RS acquisition method, a BFD-RS acquisition device, user side equipment and a storage medium, and the BFD-RS acquisition can be realized based on Multi-TRP transmission of single DCI.

In a first aspect, a method for acquiring a beam failure detection reference signal BFD-RS is provided, where the method is used for Multi-transmit-receive-point Multi-TRP transmission based on single downlink control information DCI, and the method includes:

acquiring a BFD-RS set 0 based on the configuration of a control resource set CORESET and/or the configuration of an activated transmission configuration indication state TCI state of a physical downlink shared channel PDSCH;

and acquiring a BFD-RS set 1 based on the configuration of a control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of a Physical Downlink Shared Channel (PDSCH).

In a possible embodiment, the process of acquiring the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes:

and determining a BFD-RS set 1 based on a periodic channel state information reference signal CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI.

In one possible embodiment, at least one control resource set, CORESET, configured by the user side equipment UE has two TCI states;

the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises the following steps:

determining a BFD-RS set 0 at least based on a periodic CSI-RS resource index included in a first TCI state of a CORESET where a physical downlink control channel PDCCH is located;

the process of obtaining the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises the following steps:

and determining a BFD-RS set 1 at least based on a periodic CSI-RS resource index included in the second TCI state of the CORESET where the PDCCH is positioned.

In a possible implementation manner, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes:

and determining a BFD-RS set 0 based on a periodic channel state information reference signal (CSI-RS) resource index included in a first TCI state corresponding to each code point in a TCI field of the DCI.

In a possible embodiment, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes:

and determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in the TCI state of the CORESET where the PDCCH is located.

determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state of a CORESET where a PDCCH is located;

and determining a BFD-RS set 1 based on a periodic CSI-RS resource index included in the second TCI state of the CORESET where the PDCCH is positioned.

determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state corresponding to each code point in a TCI field of DCI and a periodic CSI-RS resource index included in a first TCI state of CORESET where PDCCH is located;

and determining a BFD-RS set 1 based on a periodic CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI and a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located.

the process of acquiring the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises the following steps:

In a possible implementation manner, in any one of the determining BFD-RS set 0 and the determining BFD-RS set 1, if any one of the TCI states on which two RS indexes are based has two RS indexes, the RS index in which the corresponding quasi-co-site type D QCL-type D is taken as the RS index to be selected;

either one of the BFD-RS set 0 and the BFD-RS set 1 has at most two RS indices;

and the RS corresponding to each RS index of any one of the BFD-RS set 0 and the BFD-RS set 1 is a single-port RS.

In a second aspect, a BFD-RS acquiring apparatus is provided, comprising:

a processor and a memory for storing at least one instruction which is loaded and executed by the processor to implement the BFD-RS acquisition method described above.

In a third aspect, an apparatus for BFD-RS acquisition is provided, comprising:

a first obtaining module, configured to obtain a BFD-RS set 0 based on a configuration of a control resource set CORESET and/or a configuration of a transmission configuration indication state TCI state of activation of a physical downlink shared channel PDSCH;

a second obtaining module, configured to obtain a BFD-RS set 1 based on configuration of a control resource set CORESET and/or configuration of an activated transmission configuration indication state TCI state of a physical downlink shared channel PDSCH.

In a fourth aspect, a user side device is provided, which includes the BFD-RS acquiring apparatus described above.

In a fifth aspect, a computer-readable storage medium is provided, in which a computer program is stored, which, when run on a computer, causes the computer to perform the BFD-RS acquisition method described above.

The BFD-RS acquiring method, the BFD-RS acquiring device, the user side equipment and the storage medium in the embodiment of the application acquire the BFD-RS set of each TRP based on network configuration, namely Multi-TRP transmission based on single DCI, and therefore acquisition of the BFD-RS at the TRP level is achieved.

Drawings

Fig. 1 is a schematic flow chart of a BFD-RS acquisition method in an embodiment of the present application;

fig. 2 is a flowchart illustrating a BFD-RS acquiring method in a first specific example according to a first embodiment of the present application;

fig. 3 is a flowchart illustrating a BFD-RS acquisition method in a second specific example of the first embodiment of the present application;

FIG. 4 is a schematic flow chart of another BFD-RS acquisition method in the embodiment of the present application;

fig. 5 is a flowchart illustrating a BFD-RS acquisition method in a first specific example of a second embodiment of the present application;

fig. 6 is a flowchart illustrating a BFD-RS acquiring method in a second specific example according to a second embodiment of the present application;

fig. 7 is a flowchart illustrating a BFD-RS acquisition method in a third specific example of the second embodiment of the present application;

fig. 8 is a flowchart illustrating a BFD-RS acquiring method in a fourth specific example of the second embodiment of the present application.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

The embodiment of the application provides a method for acquiring a reference signal BFD-RS (bidirectional Forwarding-detection reference signal) for Multi-transmission receiving point Multi-TRP (downlink control information) transmission based on DCI (Downlink control information), which is suitable for a TRP (channel-time-resolved channel) level beam failure recovery process, and in the beam failure recovery process, if UE (user equipment) is not configured with the BFD-RS at the TRP level, the method for acquiring the BFD-RS provided by the embodiment of the application is executed, and as shown in FIG. 1, the method comprises the following steps:

step 101, acquiring a BFD-RS set 0 based on configuration of a control resource set CORESET and/or configuration of a transmission configuration indication state TCI state activated by a physical downlink shared channel PDSCH;

and 102, acquiring a BFD-RS set 1 based on the configuration of a control resource set CORESET and/or the configuration of an activated transmission configuration indication state TCI state of a physical downlink shared channel PDSCH.

Specifically, the BFD-RS set 0 corresponds to the BFD-RS of one TRP, and the BFD-RS set 1 corresponds to the BFD-RS of another TRP. It should be noted that, the embodiment of the present application does not limit the sequence between the step 101 and the step 102. In the embodiment of the application, the BFD-RS set of each TRP may be implicitly obtained based on a network configuration, where the network configuration refers to a configuration of CORESET and/or a configuration of activated TCI state of PDSCH.

The BFD-RS acquisition method in the embodiment of the application acquires the BFD-RS set of each TRP based on network configuration, namely Multi-TRP transmission based on single DCI, and realizes the acquisition of the BFD-RS at the TRP level.

Example one

In a possible implementation manner, in the first embodiment, the step 102 of acquiring the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes: and determining a BFD-RS set 1 based on a periodic channel state information reference signal CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI.

Specifically, for example, assume that the activated TCI state of PDSCH is as follows:

code point index 0 of the TCI field of the DCI, the corresponding TCI state is: { TCI state ID ═ 0, TCI state ID ═ 1}, where TCI state ID ═ 0 is the first TCI state corresponding to code point index 0, and TCI state ID ═ 1 is the second TCI state corresponding to code point index 0;

code point index 1 of the TCI field of the DCI, the corresponding TCI state is: { TCI state ID ═ 2}, where TCI state ID ═ 2 is the first TCI state corresponding to code point index 1, and there is no second TCI state corresponding to code point index 1;

code point index 2 of the TCI field of the DCI, the corresponding TCI state is: { TCI state ID ═ 3, TCI state ID ═ 4}, where TCI state ID ═ 3 is the first TCI state corresponding to code point index 2, and TCI state ID ═ 4 is the second TCI state corresponding to code point index 2;

code point index 3 of the TCI field of the DCI, the corresponding TCI state is: { TCI state ID ═ 5, and TCI state ID ═ 6}, where TCI state ID ═ 5 is the first TCI state corresponding to code point index 3, and TCI state ID ═ 6 is the second TCI state corresponding to code point index 3.

Based on the activated TCI state of the PDSCH, the second TCI state corresponding to each code point is used as the to-be-selected TCI state corresponding to the BFD-RS set 1, specifically, { TCI state ID ═ 1, TCI state ID ═ 4, TCI state ═ 6}, and the BFD-RS set 1 is determined based on the periodic CSI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 1, TCI state ID ═ 4, and TCI state ═ 6}, where the specific determination process may include the following principles: if any one of the TCI states to be selected has two RS indexes, taking the RS index corresponding to the Quasi Co-site type D (QCL-type) as the RS index to be selected, where the TCIstate to be selected means that in the process of determining the BFD-RS set, a TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is taken as the RS index in the BFD-RS set, and the embodiment of the present application does not limit how to further select a TCI state from the TCI state to be selected, for example, the selection may be specifically performed based on a UE implementation, and similarly, the RS index to be selected means that in the process of determining the BFD-RS set, an RS index needs to be further selected based on the RS index to be selected, so that the selected RS index is taken as the RS index in the BFD-RS set, the method for selecting the RS indexes further from the RS indexes to be selected is not limited, optionally, the BFD-RS set 1 does not include another RS index which does not correspond to the QCL-TypeD; the TCI state to be selected may correspond to more than 2 RS indexes, optionally, but the final BFD-RS set 1 includes at most 2 RS indexes; and the RS corresponding to each RS index in the BFD-RS set 1 is a single-port RS.

In a possible implementation manner, as shown in fig. 2, in a first specific example of the first embodiment, the step 101 of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes: and determining a BFD-RS set 0 based on a periodic channel state information reference signal (CSI-RS) resource index included in a first TCI state corresponding to each code point in a TCI field of the DCI.

Specifically, for example, based on the activated TCI state of the PDSCH assumed in the foregoing, the first TCI state corresponding to each code point is used as the to-be-selected TCI state corresponding to the BFD-RS set 0, specifically, { TCI state ID ═ 0, TCI state ID ═ 2, TCI state ═ 3, and TCI state ═ 5}, and the BFD-RS set 0 is determined based on the periodic SCI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 0, TCI state ID ═ 2, TCI state ═ 3, and TCI state ═ 5}, and the principle in the specific determination process may be similar to the determination process in the foregoing BFD-RS set 1: if any TCI state to be selected has two RS indexes, the RS index corresponding to QCL-TypeD in the TCI state to be selected is used as the RS index to be selected, wherein the TCI state to be selected refers to that the TCI state to be selected needs to be further selected based on the TCI state to be selected in the process of determining the BFD-RS set so that the CSI-RS resource index of the selected TCI state is used as the RS index in the BFD-RS set, the embodiment of the application does not limit how to further select the TCI state from the TCI state to be selected, such as specifically selecting based on the UE implementation, similarly, the RS index to be selected refers to that the RS index needs to be further selected based on the RS index to be selected in the process of determining the BFD-RS set so that the selected RS index is used as the RS index in the BFD-RS set, and the embodiment of the application does not limit how to further select the RS index from the RS index to be selected, optionally, the BFD-RS set 0 does not include an RS index where another does not correspond to QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, optionally, but the final BFD-RS set 0 includes at most 2 RS indexes; and the RS corresponding to each RS index in the BFD-RS set 0 is a single-port RS.

In the first specific example of embodiment one, the BFD-RS set 0 and BFD-RS set 1 are respectively determined based on different TCI states corresponding to each codepoint of the TCI field of the DCI, and therefore, are not limited to whether CORESET is configured with 2 TCI states.

In a possible implementation manner, as shown in fig. 3, in the second specific example of the first embodiment, there is step 101 different from the first specific example of the first embodiment, in this embodiment, the step 101, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH, is as follows: and determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a TCI state of CORESET where the PDCCH is located.

Specifically, the UE determines the BFD-RS set 0 according to the periodic CSI-RS resource index included in the TCI state of the CORESET where the monitored PDCCH is located, without being limited to whether the CORESET is configured with 2 TCI states, where the principle in the specific determination process may be similar to the determination process of the BFD-RS set 1: if any TCI state to be selected has two RS indexes, taking the RS index corresponding to QCL-Typed as the RS index to be selected, wherein the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is taken as the RS index in the BFD-RS set, the embodiment of the application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection can be specifically realized based on the UE, similarly, the RS index to be selected means that in the process of determining the BFD-RS set, the RS index needs to be further selected based on the RS index to be selected, so that the selected RS index is taken as the RS index in the BFD-RS set, and the embodiment of the application does not limit how to further select the RS index from the RS indexes to be selected, optionally, the BFD-RS set 0 does not include an RS index where another does not correspond to QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, optionally, but the final BFD-RS set 0 includes at most 2 RS indexes; and the RS corresponding to each RS index in the BFD-RS set 0 is a single-port RS.

In the second specific example of the first embodiment, the BFD-RS set 0 is determined based on the TCI state of the CORESET where the PDCCH is located, and the BFD-RS set 1 is determined based on the different TCI states corresponding to each code point of the TCI field of the DCI, so it is not limited to whether the CORESET is configured with 2 TCI states.

Example two

In a possible implementation manner, in the second embodiment, at least one control resource set, CORESET, configured by the user side equipment UE has two TCI states; as shown in fig. 4, in step 101, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes: determining a BFD-RS set 0 at least based on a periodic CSI-RS resource index included in a first TCI state of a CORESET where a Physical Downlink Control Channel (PDCCH) is located; 102, the process of obtaining the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises: and determining a BFD-RS set 1 at least based on a periodic CSI-RS resource index included in the second TCI state of the CORESET where the PDCCH is positioned.

Specifically, in the process of determining the BFD-RS set 0, the TCI state to be selected at least includes the first TCI state of each CORESET configured by the UE; in the process of determining the BFD-RS set 1, the TCI state to be selected at least comprises the second TCI state of each CORESET configured by the UE. Wherein the TCI state possessed by CORESET refers to the TCI state with which CORESET is configured or associated. For example, suppose that the UE is configured with three CORESET, i.e., CORESET #0, CORESET #1, and CORESET #2, where the configured or associated TCI state of CORESET #0 is TCI state ID 0, which is the first TCI state of CORESET #0, and there is no second TCI state of CORESET # 0; the CORESET #1 is configured with 2 TCI states, wherein { TCI state ID is 7, TCI state ID is 4}, TCI state ID is 7 is the first TCI state of CORESET #1, and TCI state ID is 4 is the second TCI state of CORESET # 1; CORESET #2 is configured with 2 TCI states, each TCI state corresponds to { TCI state ID ═ 6, TCI state ID ═ 8}, TCI state ID ═ 6 is the first TCI state of CORESET #2, and TCI state ID ═ 8 is the second TCI state of CORESET # 2. In the process of determining the BFD-RS set 0, at least based on a periodic CSI-RS resource index included in a TCI state corresponding to { TCI state ID ═ 0, TCI state ID ═ 7, and TCI state ID ═ 6 }; in the process of determining the BFD-RS set 1, at least a periodic CSI-RS resource index included in a TCI state corresponding to { TCI state ID ═ 4 and TCI state ID ═ 8} is to be based.

In a possible implementation manner, as shown in fig. 5, in a first specific example of the second embodiment, in step 101, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes: determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state of a CORESET where a PDCCH is located; 102, the process of obtaining the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises: and determining a BFD-RS set 1 based on a periodic CSI-RS resource index included in the second TCI state of the CORESET where the PDCCH is positioned.

Specifically, the UE determines the BFD-RS set 0 only according to the periodic CSI-RS resource index included in the first TCI state of the CORESET where the monitored PDCCH is located, and the UE determines the BFD-RS set 1 only according to the periodic CSI-RS resource index included in the second TCI state of the CORESET where the monitored PDCCH is located. For example, suppose that the UE is configured with three CORESET, i.e., CORESET #0, CORESET #1, and CORESET #2, where the configured or associated TCI state of CORESET #0 is TCI state ID 0, which is the first TCI state of CORESET #0, and there is no second TCI state of CORESET # 0; the CORESET #1 is configured with 2 TCI states, wherein { TCI state ID is 7, TCI state ID is 4}, TCI state ID is 7 is the first TCI state of CORESET #1, and TCI state ID is 4 is the second TCIsstate of CORESET # 1; the core set #2 is configured with 2 TCI states, each TCI state corresponding to { TCI state ID ═ 6, TCI state ID ═ 8}, the TCI state ID ═ 6 is the first TCI state of the core set #2, and the TCI state ID ═ 8 is the second TCI state of the core set # 2. In the process of determining the BFD-RS set 0, based on a periodic CSI-RS resource index included in a TCI state corresponding to { TCI state ID ═ 0, TCI state ID ═ 7, and TCI state ID ═ 6 }; in the process of determining the BFD-RS set 1, the periodic CSI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 4 and TCI state ID ═ 8} is based. The principle in the specific determination process may be similar to the determination process described above, and for any BFD-RS set: if any one of the TCI states to be selected has two RS indexes, taking the RS index corresponding to the QCL-Typed as the RS index to be selected, and optionally, the BFD-RS set does not include the RS index of which the other does not correspond to the QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, where the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is used as the RS index in the BFD-RS set, the embodiment of the present application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection may be specifically implemented based on the UE, similarly, the RS index to be selected refers to that the RS index needs to be further selected based on the RS index to be selected in the process of determining the BFD-RS set, so that the selected RS index is used as the RS index in the BFD-RS set, the embodiments of the present application do not limit how to further select the RS index from the RS indexes to be selected, optionally, but the final set of BFD-RS includes up to 2 RS indices; and the RS corresponding to each RS index in the BFD-RS set is a single-port RS.

In a possible implementation manner, as shown in fig. 6, in a second specific example of the second embodiment, in step 101, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes: determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state corresponding to each code point in a TCI field of DCI and a periodic CSI-RS resource index included in a first TCI state of CORESET where PDCCH is located; 102, the process of acquiring the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises: and determining a BFD-RS set 1 based on a periodic CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI and a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located.

Suppose that the UE is configured with three CORESET, which are CORESET #0, CORESET #1 and CORESET #2, where the configured or associated TCI state of CORESET #0 is TCI state ID ═ 0, TCI state ID ═ 0 is the first TCI state of CORESET #0, and there is no second TCI state of CORESET # 0; the CORESET #1 is configured with 2 TCI states, wherein { TCI state ID is 7, TCI state ID is 4}, TCI state ID is 7 is the first TCI state of CORESET #1, and TCI state ID is 4 is the second TCI state of CORESET # 1; the core set #2 is configured with 2 TCI states, each TCI state corresponding to { TCI state ID ═ 6, TCI state ID ═ 8}, the TCI state ID ═ 6 is the first TCI state of the core set #2, and the TCI state ID ═ 8 is the second TCI state of the core set # 2.

In the process of determining BFD-RS set 0, based on the periodic CSI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 0, TCI state ID ═ 2, TCI state ID ═ 3, TCI state ID ═ 5, TCI state ID ═ 7, and TCI state ID ═ 6 }. If any TCI state to be selected has two RS indexes, taking the RS index corresponding to QCL-Typed as the RS index to be selected, wherein the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is taken as the RS index in the BFD-RS set, the embodiment of the application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection can be specifically realized based on the UE, similarly, the RS index to be selected means that in the process of determining the BFD-RS set, the RS index needs to be further selected based on the RS index to be selected, so that the selected RS index is taken as the RS index in the BFD-RS set, and the embodiment of the application does not limit how to further select the RS index from the RS indexes to be selected, optionally, the BFD-RS set 0 does not include an RS index where another does not correspond to QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, optionally, but the final BFD-RS set 0 includes at most 2 RS indexes; and the RS corresponding to each RS index in the BFD-RS set 0 is a single-port RS.

In the process of determining the BFD-RS set 1, the periodic CSI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 1, TCI state ID ═ 4, TCI state ID ═ 6, and TCI state ID ═ 8} is based. If any one of the TCI states to be selected has two RS indexes, taking the RS index corresponding to the QCL-Typed as the RS index to be selected, and optionally, the BFD-RS set 1 does not include the RS index of which the other does not correspond to the QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, wherein the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is used as the RS index in the BFD-RS set, the embodiment of the present application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection may be specifically implemented based on the UE, similarly, the RS index to be selected refers to that the RS index needs to be further selected based on the RS index to be selected in the process of determining the BFD-RS set, so that the selected RS index serves as an RS index in the BFD-RS set, the embodiment of the present application makes no limitation on how to further select an RS index from the RS indexes to be selected, but the final BFD-RS set 1 includes at most 2 RS indexes; and the RS corresponding to each RS index in the BFD-RS set 1 is a single-port RS.

In a possible implementation manner, as shown in fig. 7, in a third specific example of the second embodiment, in step 101, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes: determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state of a CORESET where a PDCCH is located; 102, the process of obtaining the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises: and determining a BFD-RS set 1 based on a periodic CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI and a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located.

In the process of determining the BFD-RS set 0, based on the periodic CSI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 0, TCI state ID ═ 7, and TCI state ID ═ 6 }. If any one of the TCI states to be selected has two RS indexes, taking the RS index corresponding to the QCL-Typed as the RS index to be selected, and optionally, the BFD-RS set 0 does not include the RS index of which the other does not correspond to the QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, where the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCIstate is used as the RS index in the BFD-RS set, the embodiment of the present application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection may be specifically implemented based on the UE, similarly, the RS index to be selected refers to that the RS index needs to be further selected based on the RS index to be selected in the process of determining the BFD-RS set, so that the selected RS index is used as the RS index in the BFD-RS set, the embodiments of the present application do not limit how to further select the RS index from the RS indexes to be selected, optionally, but the final BFD-RS set 0 includes up to 2 RS indices; and the RS corresponding to each RS index in the BFD-RS set 0 is a single-port RS.

In the process of determining BFD-RS set 1, based on a periodic CSI-RS resource index included in a TCI state corresponding to { TCI state ID ═ 1, TCI state ID ═ 4, TCI state ID ═ 6, and TCI state ID ═ 8 }. If any one of the TCI states to be selected has two RS indexes, taking the RS index corresponding to the QCL-Typed as the RS index to be selected, and optionally, the BFD-RS set 1 does not include the RS index of which the other does not correspond to the QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, where the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is used as the RS index in the BFD-RS set, the embodiment of the present application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection may be specifically implemented based on the UE, similarly, the RS index to be selected refers to that the RS index needs to be further selected based on the RS index to be selected in the process of determining the BFD-RS set, so that the selected RS index is used as the RS index in the BFD-RS set, the embodiments of the present application do not limit how to further select the RS index from the RS indexes to be selected, optionally, but the final BFD-RS set 1 includes at most 2 RS indices; and the RS corresponding to each RS index in the BFD-RS set 1 is a single-port RS.

In a possible implementation manner, as shown in fig. 8, in a fourth specific example of the second embodiment, in step 101, the process of acquiring the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH includes: determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state corresponding to each code point in a TCI field of DCI and a periodic CSI-RS resource index included in a first TCI state of CORESET where PDCCH is located; 102, the process of obtaining the BFD-RS set 1 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises: and determining a BFD-RS set 1 based on a periodic CSI-RS resource index included in the second TCI state of the CORESET where the PDCCH is positioned.

Assuming that the UE is configured with three CORESET, i.e. CORESET #0, CORESET #1 and CORESET #2, where the configured or associated TCI state of CORESET #0 is TCI state ID 0, which is the first TCI state of CORESET #0, and there is no second TCI state of CORESET # 0; the CORESET #1 is configured with 2 TCI states, where { TCI state ID ═ 7, TCI state ID ═ 4}, TCI state ID ═ 7 is the first TCI state of CORESET #1, and TCI state ID ═ 4 is the second TCI state of CORESET # 1; the core set #2 is configured with 2 TCI states, each TCI state corresponding to { TCI state ID ═ 6, TCI state ID ═ 8}, the TCI state ID ═ 6 is the first TCI state of the core set #2, and the TCI state ID ═ 8 is the second TCI state of the core set # 2.

In the process of determining the BFD-RS set 0, based on the periodic CSI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 0, TCI state ID ═ 2, TCI state ID ═ 3, TCI state ID ═ 5, TCI state ID ═ 7, and TCI state ID ═ 6 }. If any TCI state to be selected has two RS indexes, taking the RS index corresponding to QCL-Typed as the RS index to be selected, wherein the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is taken as the RS index in the BFD-RS set, the embodiment of the application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection can be specifically realized based on the UE, similarly, the RS index to be selected means that in the process of determining the BFD-RS set, the RS index needs to be further selected based on the RS index to be selected, so that the selected RS index is taken as the RS index in the BFD-RS set, and the embodiment of the application does not limit how to further select the RS index from the RS indexes to be selected, optionally, the BFD-RS set 0 does not include an RS index where another does not correspond to QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, optionally, but the final BFD-RS set 0 includes at most 2 RS indexes; and the RS corresponding to each RS index in the BFD-RS set 0 is a single-port RS.

In the process of determining the BFD-RS set 1, the periodic CSI-RS resource index included in the TCI state corresponding to { TCI state ID ═ 4 and TCI state ID ═ 8} is based. If any TCI state to be selected has two RS indexes, taking the RS index corresponding to QCL-Typed as the RS index to be selected, wherein the TCI state to be selected means that in the process of determining the BFD-RS set, the TCI state needs to be further selected based on the TCI state to be selected, so that the CSI-RS resource index of the selected TCI state is taken as the RS index in the BFD-RS set, the embodiment of the application does not limit how to further select the TCI state from the TCI state to be selected, for example, the selection can be specifically realized based on the UE, similarly, the RS index to be selected means that in the process of determining the BFD-RS set, the RS index needs to be further selected based on the RS index to be selected, so that the selected RS index is taken as the RS index in the BFD-RS set, and the embodiment of the application does not limit how to further select the RS index from the RS indexes to be selected, optionally, the BFD-RS set 1 does not include an RS index where another does not correspond to QCL-Typed; the TCI state to be selected may correspond to more than 2 RS indexes, optionally, but the final BFD-RS set 1 includes at most 2 RS indexes; and the RS corresponding to each RS index in the BFD-RS set 1 is a single-port RS.

In a possible implementation manner, based on any of the above embodiments, in any one of the determining of the BFD-RS set 0 and the determining of the BFD-RS set 1, if any one of the TCI states on which the reference is based has two RS indexes, the RS index of the quasi co-site type D QCL-TypeD is taken as the to-be-selected RS index; any one of BFD-RS set 0 and BFD-RS set 1 has at most two RS indices; and the RS corresponding to each RS index of any one of the BFD-RS set 0 and the BFD-RS set 1 is a single-port RS.

The embodiment of the present application further provides a BFD-RS obtaining apparatus, including: a processor and a memory for storing at least one instruction which is loaded and executed by the processor to implement the BFD-RS acquisition method described above. The specific process and principle of the BFD-RS obtaining method are the same as those in the above embodiments, and are not described herein again.

In the BFD-RS acquiring apparatus, the number of processors may be one or more, and the processors and the memory may be connected by a bus or other means. The memory, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the BFD-RS acquisition method in the embodiments of the present application. The processor executes various functional applications and data processing by executing non-transitory software programs, instructions and modules stored in the memory, i.e., implements the methods in any of the above-described method embodiments. The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; and necessary data, etc. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device.

The embodiment of the present application further provides a BFD-RS obtaining apparatus, including: a first obtaining module, configured to obtain a BFD-RS set 0 based on a configuration of a control resource set CORESET and/or a configuration of a transmission configuration indication state TCI state of activation of a physical downlink shared channel PDSCH; and a second obtaining module, configured to obtain a BFD-RS set 1 based on configuration of a control resource set CORESET and/or configuration of a transmission configuration indication state TCI state of activation of a physical downlink shared channel PDSCH. The specific functions and principles of the first obtaining module and the second obtaining module are the same as those of the BFD-RS obtaining method in the above embodiment, and are not described herein again.

It should be understood that the above division of the BFD-RS acquiring apparatus into various modules is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling by the processing element in software, and part of the modules can be realized in the form of hardware. For example, the first obtaining module may be a processing element that is set up separately, or may be implemented by being integrated in a certain chip, or may be stored in a memory in the form of a program, and the certain processing element calls and executes the functions of the above modules. The other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. As another example, when one of the above modules is implemented in the form of a Processing element scheduler, the Processing element may be a general purpose processor, such as a Central Processing Unit (CPU) or other processor capable of invoking programs. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).

In a possible implementation manner, the second obtaining module is specifically configured to determine the BFD-RS set 1 based on a periodic channel state information reference signal CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI.

In one possible embodiment, at least one control resource set CORESET configured by the user side equipment UE has two TCI states; the first obtaining module is specifically configured to determine a BFD-RS set 0 based on at least a periodic CSI-RS resource index included in a first TCI state of a CORESET where a physical downlink control channel PDCCH is located; the second obtaining module is specifically configured to determine the BFD-RS set 1 at least based on a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located.

In a possible implementation manner, the first obtaining module is specifically configured to determine the BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state corresponding to each code point in a TCI field of the DCI.

In a possible embodiment, the first obtaining module is specifically configured to determine the BFD-RS set 0 based on a periodic CSI-RS resource index included in a TCI state of a CORESET where a PDCCH is located.

In a possible embodiment, the first obtaining module is specifically configured to determine a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state of a CORESET where a PDCCH is located; the second obtaining module is specifically configured to determine a BFD-RS set 1 based on a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located.

In a possible implementation manner, the first obtaining module is specifically configured to determine a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state corresponding to each code point in a TCI field of the DCI and a periodic CSI-RS resource index included in a first TCI state of a CORESET where the PDCCH is located; the second obtaining module is specifically configured to determine a BFD-RS set 1 based on a periodic CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI and a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located.

In a possible implementation manner, the first obtaining module is specifically configured to determine a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state of a CORESET where a PDCCH is located; the second obtaining module is specifically configured to determine a BFD-RS set 1 based on a periodic CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI and a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located.

In a possible implementation manner, the first obtaining module is specifically configured to determine a BFD-RS set 0 based on a periodic CSI-RS resource index included in a first TCI state corresponding to each code point in a TCI field of the DCI and a periodic CSI-RS resource index included in a first TCI state of a CORESET where the PDCCH is located; the second obtaining module is specifically configured to determine a BFD-RS set 1 based on a periodic CSI-RS resource index included in a second TCI state of a CORESET where the PDCCH is located;

in a possible implementation manner, in any one of the determining BFD-RS set 0 and the determining BFD-RS set 1, if any one of the TCI states based thereon has two RS indexes, the RS index of the corresponding quasi co-site type D QCL-type therein is taken as the RS index to be selected; either one of the BFD-RS set 0 and the BFD-RS set 1 has at most two RS indices; and the RS corresponding to each RS index of any one of the BFD-RS set 0 and the BFD-RS set 1 is a single-port RS.

The embodiment of the application also provides User Equipment (UE), which comprises the BFD-RS acquisition device. The specific function and principle of the BFD-RS obtaining apparatus are the same as the specific working process and principle of the BFD-RS obtaining method, and are not described herein again.

An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program runs on a computer, the computer is caused to execute the BFD-RS acquisition method described above.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk), among others.

In the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and indicates that three relationships may exist, for example, a and/or B, and may indicate that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for acquiring a reference signal BFD-RS for beam failure detection is used for Multi-transmission receiving point Multi-TRP transmission based on single downlink control information DCI, and the method comprises the following steps:

acquiring a BFD-RS set 0 based on the configuration of a control resource set CORESET and/or the configuration of a transmission configuration indication state TCI state activated by a Physical Downlink Shared Channel (PDSCH);

and acquiring a BFD-RS set 1 based on the configuration of a control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of a physical downlink shared channel PDSCH.

2. The method of claim 1,

3. The method of claim 1,

at least one control resource set CORESET configured by user side equipment UE has two TCI states;

the process of obtaining the BFD-RS set 0 based on the configuration of the control resource set CORESET and/or the configuration of the activated transmission configuration indication state TCI state of the physical downlink shared channel PDSCH comprises the following steps:

4. The method of claim 2,

5. The method of claim 2,

and determining a BFD-RS set 0 based on a periodic CSI-RS resource index included in a TCI state of CORESET where the PDCCH is located.

6. The method of claim 3,

7. The method of claim 3,

8. The method of claim 3,

and determining a BFD-RS set 1 based on a periodical CSI-RS resource index included in a second TCI state corresponding to each code point in a TCI field of the DCI and a periodical CSI-RS resource index included in a second TCI state of CORESET where the PDCCH is located.

9. The method of claim 3,

10. The method according to any one of claims 4 to 9,

in any one process of determining the BFD-RS set 0 and the BFD-RS set 1, if any one TCI state based on the two RS indexes has two RS indexes, taking the RS index corresponding to the quasi co-site type D QCL-TypeD as the RS index to be selected;

either one of the BFD-RS set 0 and the BFD-RS set 1 has at most two RS indices;

11. A BFD-RS acquisition apparatus, comprising:

a processor and a memory for storing at least one instruction which is loaded and executed by the processor to implement the BFD-RS acquisition method of any of claims 1 to 10.

12. A BFD-RS acquisition apparatus, comprising:

13. A user side device, characterized by comprising the BFD-RS acquiring apparatus according to claim 11.

14. A computer-readable storage medium, in which a computer program is stored which, when run on a computer, causes the computer to perform the BFD-RS acquisition method according to any one of claims 1 to 10.