Transmission method and device, equipment and readable storage medium

Abstract

Provided in an embodiment of the present application are a transmission method, apparatus and device, and a readable storage medium, the method comprising: acquiring first information, the first information being used for determining at least one of the following items: a first beam failure detection reference signal set and a second beam failure detection reference signal set; a first candidate beam reference signal set and a second candidate beam reference signal set; a first scheduling request SR configuration and a second SR configuration; configuration of a third SR; wherein the first SR configuration is used for a first downlink channel or signal beam failure, the second SR configuration is used for an uplink channel or signal beam failure, and the third SR configuration is used for a first downlink channel or signal and uplink channel or signal beam failure.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communication technologies, and in particular, to a transmission method, apparatus, device, and readable storage medium. Background Art

[0002] In the current network deployment of the fifth-generation mobile communication technology (5G), the same frequency band is used for outdoor macro sites and indoor micro sites. In this working mode, how the terminal obtains information related to beam failure recovery (BFR) is an urgent problem to be solved. Summary of the Invention

[0003] Embodiments of the present application aim to provide a transmission method, apparatus, device, and readable storage medium to solve the problem of how the terminal obtains information related to beam failure recovery.

[0004] In a first aspect, a transmission method is provided, which is applied to a terminal. The method includes:

[0005] Obtain first information, where the first information is used to determine at least one of the following: a first beam failure detection reference signal set and a second beam failure detection reference signal set; a first candidate beam reference signal set and a second candidate beam reference signal set; a first scheduling request SR configuration and a second SR configuration; a configuration of a third SR; where the first SR configuration is for a first downlink channel or signal beam failure, the second SR configuration is for an uplink channel or signal beam failure, and the third SR configuration is for a first downlink channel or signal and an uplink channel or signal beam failure.

[0006] Optionally, the first information includes the configurations of the first beam failure detection reference signal set and the second beam failure detection reference signal set.

[0007] Optionally, the first information includes the transmission configuration indication state TCI state of a control resource set CORESET used by the terminal to monitor a physical downlink control channel PDCCH;

[0008] Wherein, the index of the reference signal indicated in the TCI state of the CORESET used by the terminal to monitor the PDCCH is the same as the index of the reference signal in the first beam failure detection reference signal set.

[0009] Optionally, the first information includes the TCI state or spatial relation information used by the terminal to transmit a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH), and the index of the reference signal indicated in the TCI state or spatial relation information used by the terminal to transmit the PUCCH or PUSCH is the same as the index of the reference signal in the second beam failure detection reference signal set.

[0010] Optionally, the reference signals in the first beam failure detection reference signal set and / or the second beam failure detection reference signal set include the reference signal of quasi co-location type D in the TCI state.

[0011] Optionally, after obtaining the first information, the method further includes:

[0012] Determine a Physical Random Access Channel (PRACH) resource according to a target candidate beam reference signal identifier;

[0013] Transmit a PRACH according to the PRACH resource.

[0014] Optionally, transmitting a PRACH according to the PRACH resource includes:

[0015] Determine the spatial domain filtering of the PRACH according to the TCI state or the target candidate beam reference signal identifier;

[0016] Transmit a PRACH according to the PRACH resource and the spatial domain filtering of the PRACH.

[0017] Optionally, determining a PRACH resource according to a target candidate beam reference signal identifier includes:

[0018] Determine the PRACH resource corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier and the PRACH resource.

[0019] Optionally, determining the spatial domain filtering of the PRACH according to a target candidate beam reference signal identifier includes:

[0020] Determine the spatial domain filtering of the PRACH corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier and the TCI state or the spatial relation information of the PRACH.

[0021] Optionally, before or after obtaining the first information, the method further includes:

[0022] Receive a second piece of information, where the second piece of information is used to indicate an update to the TCI state or spatial relationship information of the PRACH in the corresponding relationship.

[0023] Optionally, according to the PRACH resource and the spatial domain filtering of the PRACH, send the PRACH, including:

[0024] Send the PRACH according to the PRACH resource, the spatial domain filtering of the PRACH, and the timing advance (TA);

[0025] wherein, the TA is determined based on the SSB associated with the first parameter.

[0026] Optionally, after obtaining the first piece of information, the method further includes:

[0027] Send a scheduling request and / or a third piece of information, where the third piece of information carries a beam failure recovery request.

[0028] Optionally, the third piece of information further includes at least one of the following: a fourth piece of information and a fifth piece of information, where the fourth piece of information is used to indicate one of the following: downlink channel or signal failure, uplink channel or signal failure, downlink channel or signal and uplink channel or signal failure, and the fifth piece of information is used to indicate a candidate beam reference signal identifier.

[0029] Optionally, before or after obtaining the first piece of information, the method further includes:

[0030] In the case where the terminal receives the PDCCH in the search space set for the recovery search space identifier after the first number of symbols, send an uplink channel or signal through the spatial domain filtering of the PRACH (i.e., the spatial domain filtering used to send the PRACH).

[0031] Optionally, before or after obtaining the first piece of information, the method further includes:

[0032] In the case where the second DCI received by the terminal, compared with the first DCI scheduling the PUSCH for sending a beam recovery request, has the NDI value flipped between the second DCI and the first DCI, and the HARQ process identifier in the second DCI and the first DCI is the same, send an uplink channel or signal through the spatial domain filtering of the candidate beam.

[0033] Optionally, before or after obtaining the first piece of information, the method further includes:

[0034] In the case where the terminal receives the PDCCH in the search space set for the recovery search space identifier after the second number of symbols, receive a downlink channel or signal using the same quasi - co - location parameters as the candidate beam.

[0035] Optionally, before or after obtaining the first information, the method further includes:

[0036] When the fourth DCI received by the terminal has a flipped NDI value compared to the third DCI scheduling the PUSCH for transmitting a beam recovery request, and the HARQ process identifiers in the fourth DCI and the third DCI are the same, receive a downlink channel or signal using the same quasi - co - location parameters as the candidate beam.

[0037] In a second aspect, a transmission device is provided, which is applied to a terminal and includes: a first processing unit;

[0038] The first processing unit is configured to obtain first information, where the first information is used to determine at least one of the following: a first beam failure detection reference signal set and a second beam failure detection reference signal set; a first candidate beam reference signal set and a second candidate beam reference signal set; a first SR configuration and a second SR configuration; a configuration of a third SR; where the first SR configuration is for a first downlink channel or signal beam failure, the second SR configuration is for an uplink channel or signal beam failure, the third SR configuration is for a first downlink channel or signal and an uplink channel or signal beam failure, the terminal's downlink accesses a first node, and the terminal's uplink accesses a second node.

[0039] In a third aspect, a communication device is provided, including a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0040] In a sixth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0041] In this embodiment, the terminal obtains first information, where the first information is used to determine at least one of the following: a first beam failure detection reference signal set and a second beam failure detection reference signal set; a first candidate beam reference signal set and a second candidate beam reference signal set; a first scheduling request (SR) configuration and a second SR configuration; a configuration of a third SR; where the first SR configuration is for a first downlink channel or signal beam failure, the second SR configuration is for an uplink channel or signal beam failure, the third SR configuration is for a first downlink channel or signal and an uplink channel or signal beam failure. In this way, the terminal can obtain information related to beam failure recovery and can then perform a beam failure recovery process. Description of the Drawings

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0043] Figure 1 is a schematic diagram of a beam failure detection reference signal indicating a MAC CE

[0044] Figure 2 is a schematic diagram of an enhanced BFR and a truncated enhanced BFR-MAC CE;

[0045] Figure 3 is a flowchart of a transmission method provided by an embodiment of the present application;

[0046] Figure 4 is a schematic diagram of a transmission device provided by an embodiment of the present application;

[0047] Figure 5 is a schematic diagram of a communication device provided by an embodiment of the present application. Detailed Embodiments

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0049] The term "including" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices. In addition, the use of "and / or" in the specification and claims means at least one of the connected objects. For example, A and / or B means including three cases: A alone, B alone, and both A and B exist.

[0050] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0051] To facilitate the understanding of the embodiments of the present application, the following technical points are introduced first:

[0052] Regarding the enhancement of beam failure recovery (BFR) for multi-transmit receive point (M-TRP):

[0053] 1) Enhancement of beam failure detection reference signal (BFD-RS) and new beam indication reference signal (NBI-RS).

[0054] a) Explicit configuration of BFD-RS and NBI-RS enhancement: Two sets are configured for each, and each set corresponds to one TRP.

[0055] The number of BFD-RS resources in each BFD-RS set is the UE capability and can be configured as 1.

[0056] b) Implicit configuration of BFD-RS:

[0057] Multi-downlink control information (M-DCI) mode supports implicit configuration of BFD-RS, and the BFD-RS set corresponds to the control resource set pool index (CORESET Pool Index);

[0058] Single-downlink control information (S-DCI) does not support implicit configuration

[0059] c) The BFD-RS set can be configured through radio resource control (RRC) or through medium access control-control element (MAC-CE), as Figure 1 shown.

[0060] 2) Enhancement of beam failure recovery.

[0061] a) Enhancement of Beam Failure Recovery Request (BFRQ): Report BFRQ through MAC-CE, and request uplink resources through Physical Uplink Control Channel (PUCCH)-Scheduling Request (SR).

[0062] b) PUCCH-SR Configuration: Each cell group (Master Cell Group (MCG), Secondary Cell Group (SCG), or PUCCH cell group) can be configured with up to 2 PUCCH-SR resources at most.

[0063] c) PUCCH-SR Resource Selection: When beam failure is detected on at most one BFD-RS for each Carrier Aggregation (CC), and different CCs are associated with the same PUCCH-SR resource, select the PUCCH-SR resource associated with the failed BFD-RS to send SR. Otherwise, which PUCCH-SR resource is specifically used to send SR depends on the UE.

[0064] d) MAC-CE Report Content: Compared with the Release 16 (R16) Secondary Cell (Scell) BFR, the Identity (ID) is added to indicate the BFD-RS set index, and the Si is added to indicate the ScellBFR situation corresponding to 2 TRPs. See Figure 2 。

[0065] See Figure 3 For details, an embodiment of this application provides a transmission method applied to a terminal. The specific steps include: Step 301.

[0066] Step 301: Obtain first information, where the first information is used to determine at least one of the following:

[0067] 1) The first Beam Failure Detection Reference Signal Set (BFD-RS set-1) and the second Beam Failure Detection Reference Signal Set (BFD-RS set-2);

[0068] In this embodiment, the first Beam Failure Detection Reference Signal Set corresponds to the first downlink channel or signal, and the second Beam Failure Detection Reference Signal Set corresponds to the uplink channel or signal;

[0069] Optionally, the first beam failure detection reference signal set is configured by a first node, and the second beam failure detection reference signal set is configured by a second node.

[0070] 2) A first candidate beam reference signal set (candidate beam-RS set-1) and a second candidate beam reference signal set (candidate beam-RS set-2);

[0071] In this embodiment, the first candidate beam reference signal set corresponds to a first downlink channel or signal, and the second candidate beam reference signal set corresponds to an uplink channel or signal;

[0072] Among them, the first candidate beam reference signal set is configured by the first node, and the second candidate beam reference signal set is configured by the second node.

[0073] 3) A first SR configuration and a second SR configuration, where the first SR configuration is used for beam failure of a first downlink channel or signal, and the second SR configuration is used for beam failure of an uplink channel or signal;

[0074] Among them, the first SR configuration is configured by the first node, and the second SR configuration is configured by the second node.

[0075] 4) A configuration of a third SR, where the third SR configuration is used for beam failure of a first downlink channel or signal and an uplink channel or signal;

[0076] Among them, the configuration of the third SR is configured by the first node or the second node.

[0077] Optionally, the serving cell of the terminal is the cell served by the first node, and the identifier of the cell served by the first node is different from the identifier of the cell served by the second node. Optionally, the downlink of the terminal accesses the first node, and the uplink of the terminal accesses the second node.

[0078] In the case where the first node and the second node serve the UE simultaneously, there can be a 0 ms real-time information interaction capability between the first node and the second node to interact control signaling, data, configuration information, etc.

[0079] Optionally, the first node includes but is not limited to a macro station, and the second node includes but is not limited to a micro station.

[0080] In an implementation manner of this application, the method further includes:

[0081] Receiving a first downlink channel or signal from the first node, and / or, sending an uplink channel or signal to the second node.

[0082] For the co-frequency deployment scenario of the first node and the second node, the downlink and uplink of the terminal can be connected to the first node and the second node respectively, effectively avoiding the problem of strong interference of the downlink of the first node to the downlink of the second node.

[0083] Optionally, the first downlink channel or signal includes at least one of a Physical Downlink Control Channel (PDCCH), a Physical Downlink Shared Channel (PDSCH), a Synchronization Signal and PBCH block (SSB), and a Channel State Information-Reference Signal (CSI-RS).

[0084] Optionally, the uplink channel or signal includes at least one of a Sounding Reference Signal (SRS), a Physical Uplink Control Channel (PUCCH), and a Physical Uplink Shared Channel (PUSCH).

[0085] In an implementation manner of this application, the method further includes:

[0086] Receiving a second downlink channel or signal from the second node. It should be noted that the second downlink channel or signal received by the terminal from the second node is different from the first downlink channel or signal received by the terminal from the first node, further avoiding the problem of strong interference of the downlink of the first node to the downlink of the second node. In an implementation manner of this application, the second downlink channel or signal is associated with the cell ID of the cell served by the second node. Optionally, the second downlink channel or signal is used for terminal measurement.

[0087] In an implementation manner of this application, the second downlink channel or signal is configured as a reference reference signal for the Transmission Configuration Indicator (TCI) state or SpatialRelationInfo of the second downlink channel or signal;

[0088] Wherein, the reference reference signal is used to determine the uplink transmission beam when the terminal transmits an uplink channel or signal.

[0089] In an implementation manner of the present application, the second downlink channel or signal is configured as a path loss (PL) reference signal of an uplink channel or signal;

[0090] wherein, the path loss reference signal is used to determine the uplink transmission power when the terminal transmits an uplink channel or signal.

[0091] In an implementation manner of the present application, the second downlink channel or signal includes at least one of SSB and CSI-RS. Optionally, the SSB is configured as a reference signal for the TCI state of the CSI-RS.

[0092] In an implementation manner of the present application, the first information includes the configuration of the first beam failure detection reference signal set and the configuration of the second beam failure detection reference signal set.

[0093] In this embodiment, explicit configuration of two sets of beam failure detection reference signals is achieved through the first information, namely the first beam failure detection reference signal set (BFD-RS set-1) and the second beam failure detection reference signal set (BFD-RS set-2).

[0094] In an implementation manner of the present application, the first information includes the TCI state of the control resource set (CORESET) used by the terminal to monitor the PDCCH, and the TCI state or spatial relationship information used by the terminal to transmit the PUCCH or PUSCH;

[0095] wherein, the index of the reference signal indicated in the TCI state of the CORESET used by the terminal to monitor the PDCCH is the same as the index of the reference signal in the first beam failure detection reference signal set;

[0096] The index of the reference signal indicated in the TCI state or spatial relationship information used by the terminal to transmit the PUCCH or PUSCH is the same as the index of the reference signal in the second beam failure detection reference signal set.

[0097] The implicit configuration of the first beam failure detection reference signal set (BFD-RS set-1) is achieved in the above manner.

[0098] Optionally, the first information includes the TCI state or spatial relationship information used by the terminal to transmit the PUCCH or PUSCH, and the index of the reference signal indicated in the TCI state or spatial relationship information used by the terminal to transmit the PUCCH or PUSCH is the same as the index of the reference signal in the second beam failure detection reference signal set.

[0099] Implement implicit configuration of the second beam failure detection reference signal set (BFD-RS set-2) in the above manner.

[0100] In an embodiment of the present application, the reference signals in the first beam failure detection reference signal set and / or the second beam failure detection reference signal set include reference signals of Quasi-Colocation (QCL) type D in the TCI state.

[0101] In an embodiment of the present application, after obtaining the first information, the method further includes:

[0102] Determine the Physical Random Access Channel (PRACH) resources according to the target candidate beam reference signal identifier;

[0103] Send a PRACH according to the PRACH resources.

[0104] For example, the target candidate beam reference signal may be a candidate beam reference signal in the first candidate beam reference signal set and / or the second candidate beam reference signal set.

[0105] It should be noted that if a PRACH is sent to the first node, since the uplink coverage performance of the first node is limited, the first node may not receive the PRACH, so the PRACH is sent to the second node.

[0106] In an embodiment of the present application, sending a PRACH according to the PRACH resources includes:

[0107] Determine the spatial domain filtering (or beam direction) of the PRACH according to the TCI state or the target candidate beam reference signal identifier;

[0108] Send the PRACH according to the PRACH resources and the spatial domain filtering of the PRACH.

[0109] In an embodiment of the present application, determining the PRACH resources according to the target candidate beam reference signal identifier includes:

[0110] Determine the PRACH resources corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier (candidate beam-RS ID) and the PRACH resources.

[0111] In an implementation manner of the present application, determining the spatial domain filtering of the PRACH according to the target candidate beam reference signal identifier includes:

[0112] Determining the spatial domain filtering of the PRACH corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier and the TCI state of the PRACH or the spatial relationship information of the PRACH.

[0113] In an implementation manner of the present application, before or after obtaining the first information, the method further includes:

[0114] Receiving second information, where the second information is used to indicate an update of the TCI state of the PRACH or the spatial relationship information in the correspondence.

[0115] For example, the second information includes but is not limited to MAC CE, that is, MAC CE supports updating the TCI state of the PRACH or the spatial relationship information.

[0116] In an implementation manner of the present application, sending the PRACH according to the PRACH resource and the spatial domain filtering of the PRACH includes:

[0117] Sending the PRACH according to the PRACH resource, the spatial domain filtering of the PRACH, and the timing advance (TA);

[0118] Wherein, the TA is determined based on the SSB associated with the first parameter. For example, the first parameter represents the cell identifier of the second node, that is, the TA is associated with the cell identifier of the second node (such as a small station).

[0119] In an implementation manner of the present application, after obtaining the first information, the method further includes:

[0120] Sending a scheduling request and / or third information, where the third information carries a beam failure recovery request.

[0121] Optionally, the terminal sends a scheduling request and / or third information to the second node. For example, the third information includes but is not limited to MAC CE, that is, both the SR and / or the PUSCH carrying the MAC CE of the beam failure recovery request are sent to the second node.

[0122] In an implementation manner of the present application, the third information further includes at least one of the following: a fourth information and a fifth information, where the fourth information is used to indicate one of the following: downlink channel or signal failure, uplink channel or signal failure, downlink channel or signal and uplink channel or signal failure, and the fifth information is used to indicate a candidate beam reference signal identifier.

[0123] In an embodiment of the present application, before or after obtaining the first information, the method further includes:

[0124] When the terminal receives the first number of symbols after the PDCCH in the search space set for restoring the search space identifier, send an uplink channel or signal through spatial domain filtering of the PRACH (for example, send an uplink channel or signal to a second node).

[0125] Optionally, the spatial reception parameters of the first downlink channel or signal remain unchanged.

[0126] Optionally, the first number may be 28, but is not limited thereto.

[0127] In an embodiment of the present application, before or after obtaining the first information, the method further includes:

[0128] When the second DCI received by the terminal has a flipped value of the new data indicator (NDI) compared to the first DCI scheduling the PUSCH for transmitting the beam recovery request, and the hybrid automatic repeat request (HARQ) process identifier in the second DCI and the first DCI, send an uplink channel or signal through spatial domain filtering of the candidate beam (for example, send an uplink channel or signal to a second node).

[0129] Optionally, the spatial reception parameters of the first downlink channel or signal remain unchanged

[0130] In an embodiment of the present application, before or after obtaining the first information, the method further includes:

[0131] When the terminal receives the second number of symbols after the PDCCH in the search space set (search space set) for restoring the search space identifier, receive a downlink channel or signal (for example, receive the first downlink channel or signal sent by the first node) using the same quasi - co - location parameters as the candidate beam.

[0132] Optionally, the spatial reception parameters of the uplink channel or signal remain unchanged.

[0133] Optionally, the second number may be 28, but is not limited thereto.

[0134] In an embodiment of the present application, before or after obtaining the first information, the method further includes, including:

[0135] When the fourth DCI received by the terminal, compared with the third DCI scheduling the PUSCH for transmitting a beam recovery request, the NDI values in the fourth DCI and the third DCI are flipped, and when the HARQ process identifiers in the fourth DCI and the third DCI are the same, receive the downlink channel or signal (such as receiving the first downlink channel or signal sent by the first node) using the same quasi-co-location parameters as the candidate beam.

[0136] Optionally, the spatial reception parameters of the uplink channel or signal remain unchanged.

[0137] In this embodiment, the terminal can obtain information related to beam failure recovery, and thus can perform the beam failure recovery process. Further, the terminal accesses the first node in the downlink, and the terminal accesses the second node in the uplink, which can avoid the downlink interference of the first node to the second node.

[0138] The following takes the first node as a macro station and the second node as a micro station as an example to introduce an optional implementation manner.

[0139] In one implementation manner, a working scenario of DL accessing a macro station and UL accessing an indoor micro station is provided. The serving cell of the UE is the macro station, the cell identifier of the micro station is different from that of the macro station, and the relationship between the macro station and the micro station is an inter-cell relationship.

[0140] The serving cell macro station sends the first downlink channel or signal.

[0141] The micro station sends the second downlink channel or signal and receives the uplink channel or signal.

[0142] In this working mode, the terminal's downlink PDCCH and / or PDSCH only come from the macro station, and the micro station no longer sends PDCCH and / or PDSCH to the UE, solving the problem of strong interference caused by the macro station's downlink to the micro station's downlink.

[0143] Here, the macro station and the micro station provide services for the UE at the same time. Therefore, the macro station and the micro station need to have the ability of real-time information interaction of 0 ms, and interact with control signaling, data, information configuration, etc.

[0144] Specifically, the overall working process includes:

[0145] The micro station sends the second downlink channel or signal. The second downlink channel or signal does not include PDCCH and / or PDSCH, and the second downlink channel or signal includes at least one of SSB and CSI-RS.

[0146] 1) Configure the SSB of the micro-station for the terminal to measure, and associate the SSB of the micro-station with the cell ID of the micro-station. The micro-station transmits the SSB;

[0147] 2) Configure the SSB associated with the cell ID of the micro-station as the reference RS of the TCI state of the CSI-RS. The micro-station transmits the CSI-RS;

[0148] The UE transmits an uplink channel or signal to the micro-station:

[0149] 1) Configure the SSB and / or CSI-RS associated with the cell ID of the micro-station as the reference RS of the TCI state or SpatialRelationInfo of the uplink channel or signal, which is used to determine the uplink transmission beam when the terminal transmits the uplink channel or signal;

[0150] 2) Configure the SSB and / or CSI-RS as the path loss RS of the uplink channel or signal, which is used to determine the uplink transmission power when the terminal transmits the uplink channel or signal.

[0151] Perform the Beam Failure Recovery (BFR) process for the macro-station DL and the micro-station UL respectively.

[0152] 1) Explicitly configure 2 sets of Beam failure detection-RS (BFD-RS): The macro-station configures BFD-RS set-1, and the micro-station configures BFD-RS set-2.

[0153] 2) Implicitly configure BFD-RS:

[0154] a) Method for implicitly configuring BFD-RS for the macro-station DL: The index of the RS in the BFD-RS set is the same as the index of the RS indicated in the TCI state of the CORESET used by the UE to monitor the PDCCH;

[0155] b) Method for implicitly configuring BFD-RS for the micro-station UL: The index of the RS in the BFD-RS set is the same as the index of the RS indicated in the TCI state used by the UE to transmit the PUSCH; or the index of the RS in the BFD-RS set is the same as the index of the RS indicated in the TCI state or SpatiaRelationInfo used by the UE to transmit the PUCCH or PUSCH;

[0156] i. It can only work under the unified TCI state architecture. The BFD-RS is the reference signal of QCL type D in the indicated unified TCI state.

[0157] 3) Configure 2 sets of candidate beam reference signals (candidate beam-RS): The macro station configures candidate beam-RS set-1, and the micro station configures candidate beam-RS set-2.

[0158] 4) BFR process when the macro station DL and the micro station UL come from the PCell:

[0159] a) When the macro station DL comes from the PCell, determine the PRACH resource according to the candidate beam-RS ID. If the PRACH is sent to the macro station, since the uplink coverage performance of the macro station is limited, the macro station may not receive the PRACH. Therefore, the PRACH is sent to the micro station.

[0160] i. Under the Unified TCI state architecture, directly apply the UL unified TCI state to the PRACH to determine the spatial domain filtering of the PRACH;

[0161] ii. Under the non-Unified TCI state architecture, add a mapping relationship between the candidate beam-RS ID, the PRACH resource, and the TCI state of the PRACH or the SpatialRelationInfo of the PRACH. When the candidate beam-RS ID is determined, the PRACH resource and the spatial domain filtering of the PRACH resource can be determined;

[0162] iii. Add MAC CE to support updating the TCI state or SpatialRelationInfo of the PRACH;

[0163] iv. Calculate the TA based on the SSB associated with the cell ID of the micro station, and send the PRACH using the TA.

[0164] b) When the micro station UL comes from the PCell, determine the PRACH resource according to the candidate beam-RS ID, and the PRACH is sent to the micro station.

[0165] 5) BFR process when the macro station DL and the micro station UL come from the SCell:

[0166] a) Configure two sets of PUCCH-SR, corresponding to the macro station DL beam failure and the micro station UL beam failure respectively; or configure one PUCCH-SR, and use the PUCCH-SR both when the SCell beam of DL fails and when the SCell beam of UL fails.

[0167] b) Both the PUCCH-SR and the PUSCH of the MAC CE carrying the beam failure recovery request (BFRQ) are sent to the micro station.

[0168] i. Indicate DL failure, or UL failure, or both DL and UL failures in the MAC CE;

[0169] ii. Candidate beam RS-ID.

[0170] 6) Beam recovery success confirmation: The same as the legacy process;

[0171] 7) Beam update: After the UL beam recovery is successful, only the beam directions of the PUCCH and PUSCH are updated, and the beam of the DL channel remains unchanged:

[0172] a) For the PCell BFR process triggered by the BFD-RS set-2, 28 symbols after the terminal receives the PDCCH in the search space set with the recoverySearchSpaceId, send the PUCCH, PUSCH, and SRS with the beam direction of sending the PRACH, but the beam directions of the PDCCH and PDSCH remain unchanged.

[0173] b) For the SCell BFR process triggered by the BFD-RS set-2, when the terminal receives the DCI scheduling the PUSCH with the NDI flipped and the HARQ process ID the same as that of the scheduled MAC CE's PUSCH, send the PUCCH, PUSCH, and SRS with the beam direction of the candidate beam, but the beam directions of the PDCCH and PDSCH remain unchanged.

[0174] 8) Beam update: After the DL beam recovery is successful, only the beam directions of the PDCCH and PDSCH are updated, and the beam of the UL channel remains unchanged:

[0175] a) For the PCell BFR process triggered by BFD-RS set-1, when the terminal receives the PDCCH in the search space set with the recovery search space identifier (recoverySearchSpaceId) after 28 symbols, it receives the PDCCH and PDSCH in the beam direction of the candidate beam, but the beam directions of the PUCCH and PUSCH remain unchanged.

[0176] b) For the SCell BFR process triggered by BFD-RS set-1, when the terminal receives the DCI that schedules the PUSCH with the NDI flipped compared to the PUSCH of the scheduling MAC CE and the same HARQ process identifier (process ID), it receives the PDCCH and PDSCH in the beam direction of the candidate beam, but the beam directions of the PUCCH and PUSCH remain unchanged.

[0177] See Figure 4 , an embodiment of the present application provides a transmission device, which is applied to a terminal. The device 400 includes: a first transceiver unit 401 and a first processing unit 402.

[0178] The first processing unit 402 is configured for the first transceiver unit 401 to obtain first information, which is used to determine at least one of the following: a first beam failure detection reference signal set and a second beam failure detection reference signal set; a first candidate beam reference signal set and a second candidate beam reference signal set; a first scheduling request SR configuration and a second SR configuration; a configuration of a third SR; wherein, the first SR configuration is for the beam failure of a first downlink channel or signal, the second SR configuration is for the beam failure of an uplink channel or signal, and the third SR configuration is for the beam failure of a first downlink channel or signal and an uplink channel or signal.

[0179] In an implementation manner of the present application, the first information includes the configuration of the first beam failure detection reference signal set and the configuration of the second beam failure detection reference signal set.

[0180] In an implementation manner of the present application, the first information includes the TCI state of the CORESET used by the terminal to monitor the PDCCH,

[0181] wherein, the index of the reference signal indicated in the TCI state of the CORESET used by the terminal to monitor the PDCCH is the same as the index of the reference signal in the first beam failure detection reference signal set.

[0182] In an embodiment of the present application, the first information includes the TCI state or spatial relationship information used by the terminal to transmit PUCCH or PUSCH;

[0183] The index of the reference signal indicated in the TCI state or spatial relationship information used by the terminal to transmit PUCCH or PUSCH is the same as the index of the reference signal in the second beam failure detection reference signal set.

[0184] In an embodiment of the present application, the reference signal in the first beam failure detection reference signal set and / or the second beam failure detection reference signal set includes the reference signal of QCL type D in the TCI state.

[0185] In an embodiment of the present application, the first processing unit 402 is further configured to determine a PRACH resource according to the target candidate beam reference signal identifier;

[0186] The first transceiver unit 401 is further configured to: transmit a PRACH according to the PRACH resource.

[0187] In an embodiment of the present application, the first processing unit 402 is further configured to determine the spatial domain filtering of the PRACH according to the TCI state or the target candidate beam reference signal identifier;

[0188] The first transceiver unit 401 is further configured to: transmit a PRACH according to the PRACH resource and the spatial domain filtering of the PRACH.

[0189] In an embodiment of the present application, the first processing unit 402 is further configured to:

[0190] Determine the PRACH resource corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier (candidate beam-RS ID) and the PRACH resource.

[0191] In an embodiment of the present application, the first processing unit 402 is further configured to:

[0192] Determine the spatial domain filtering of the PRACH corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier and the TCI state of the PRACH or the spatial relationship information of the PRACH.

[0193] In an embodiment of the present application, the first transceiver unit 401 is further configured to receive second information, where the second information is used to indicate to update the TCI state or spatial relationship information of the PRACH in the corresponding relationship.

[0194] In an embodiment of the present application, the first transceiver unit 401 is further configured to send a PRACH according to the PRACH resource, the spatial domain filtering of the PRACH, and the time advance (TA);

[0195] wherein the TA is determined based on the SSB associated with the first parameter.

[0196] In an embodiment of the present application, the first transceiver unit 401 is further configured to send a scheduling request and / or third information, where the third information carries a beam failure recovery request.

[0197] In an embodiment of the present application, the third information further includes at least one of the following: fourth information and fifth information, where the fourth information is used to indicate one of the following: downlink channel or signal failure, uplink channel or signal failure, downlink channel or signal and uplink channel or signal failure, and the fifth information is used to indicate a candidate beam reference signal identifier.

[0198] In an embodiment of the present application, the first transceiver unit 401 is further configured to: in the case of the first number of symbols after the terminal receives a PDCCH in the search space set of the recovery search space identifier, send an uplink channel or signal through the spatial domain filtering of the PRACH.

[0199] In an embodiment of the present application, the first transceiver unit 401 is further configured to: in the case where the second DCI received by the terminal has a flipped NDI value compared with the first DCI scheduling the PUSCH for sending a beam recovery request, and the HARQ process identifiers in the second DCI and the first DCI are the same, send an uplink channel or signal through the spatial domain filtering of the candidate beam.

[0200] In an embodiment of the present application, the first transceiver unit 401 is further configured to: in the case of the second number of symbols after the terminal receives a PDCCH in the search space set of the recovery search space identifier, receive a downlink channel or signal using the same quasi - co - location parameters as the candidate beam.

[0201] In an implementation manner of the present application, the first transceiver unit 401 is further configured to: when the fourth DCI received by the terminal has the NDI value flipped compared with the third DCI scheduling the PUSCH for transmitting a beam recovery request, and the HARQ process identifiers in the fourth DCI and the third DCI are the same, receive a downlink channel or signal using the same quasi co-location parameters as the candidate beam.

[0202] The device provided by the embodiments of the present application can implement Figure 3 each process implemented by the method embodiments shown and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0203] As Figure 5 shown, an embodiment of the present application further provides a communication device 500, including a processor 501, a memory 502, and a program or instruction stored on the memory 502 and executable on the processor 501. When the program or instruction is executed by the processor 501, it implements each process of the above Figure 3 method embodiments and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0204] An embodiment of the present application further provides a readable storage medium. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, it implements each process of the above Figure 3 method embodiments and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0205] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0206] The steps of the methods or algorithms described in connection with the disclosure of the present application may be implemented in hardware or by a processor executing software instructions. The software instructions may consist of corresponding software modules, and the software modules may be stored in a RAM, flash memory, ROM, EPROM, EEPROM, register, hard disk, removable hard disk, CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be carried in an ASIC. Additionally, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may also exist as discrete components in the core network interface device.

[0207] Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the present application can be implemented by hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. The computer-readable medium includes computer storage media and communication media, where the communication media includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium can be any available medium accessible by a general or special-purpose computer.

[0208] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above is only the specific embodiments of the present application and is not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

[0209] Those skilled in the art should understand that the embodiments of the present application may be provided as a method, system, or computer program product. Therefore, the embodiments of the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0210] Embodiments of the present application are described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0211] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0212] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0213] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A transmission method, applied to a terminal, characterized in that, The method includes: Obtaining first information, where the first information is used to determine at least one of the following: A first beam failure detection reference signal set and a second beam failure detection reference signal set; A first candidate beam reference signal set and a second candidate beam reference signal set; A first scheduling request (SR) configuration and a second SR configuration; The configuration of a third SR; Wherein, the first SR configuration is for a first downlink channel or signal beam failure, the second SR configuration is for an uplink channel or signal beam failure, and the third SR configuration is for a first downlink channel or signal and an uplink channel or signal beam failure.

2. The method according to claim 1, characterized in that, The first information includes the configuration of the first beam failure detection reference signal set and the configuration of the second beam failure detection reference signal set.

3. The method according to claim 1, wherein The first information includes the transmission configuration indication (TCI) state of the control resource set (CORESET) used by the terminal to monitor the physical downlink control channel (PDCCH); Wherein, the index of the reference signal indicated in the TCI state of the CORESET used by the terminal to monitor the PDCCH is the same as the index of the reference signal in the first beam failure detection reference signal set.

4. The method according to claim 1, characterized in that, The first information includes the TCI state or spatial relationship information used by the terminal to transmit the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH); Wherein, the index of the reference signal indicated in the TCI state or spatial relationship information used by the terminal to transmit the PUCCH or PUSCH is the same as the index of the reference signal in the second beam failure detection reference signal set.

5. The method according to claim 1, characterized in that The reference signal in the first beam failure detection reference signal set and / or the second beam failure detection reference signal set includes the reference signal of quasi - co - location type D in the TCI state.

6. The method according to claim 1, characterized in that The method further includes: Determining a physical random access channel (PRACH) resource according to the target candidate beam reference signal identifier; Sending a PRACH according to the PRACH resource.

7. The method according to claim 6, characterized in that, Sending a PRACH according to the PRACH resource includes: Determining the spatial domain filtering of the PRACH according to the TCI state or the target candidate beam reference signal identifier; Sending a PRACH according to the PRACH resource and the spatial domain filtering of the PRACH.

8. The method according to claim 6, characterized in that, Determining a PRACH resource according to the target candidate beam reference signal identifier includes: Determining the PRACH resource corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier and the PRACH resource.

9. The method according to claim 7, wherein Determining the spatial domain filtering of the PRACH according to the target candidate beam reference signal identifier includes: Determining the spatial domain filtering of the PRACH corresponding to the target candidate beam reference signal identifier according to the target candidate beam reference signal identifier and the correspondence between the candidate beam reference signal identifier and the TCI state of the PRACH or the spatial relationship information of the PRACH.

10. The method according to claim 9, wherein The method further includes: Receive second information, where the second information is used to indicate an update of the TCI state or spatial relation information of the PRACH in the corresponding relationship.

11. The method according to claim 7, characterized in that Transmit a PRACH according to the PRACH resource and the spatial domain filtering of the PRACH, including: Transmit a PRACH according to the PRACH resource, the spatial domain filtering of the PRACH, and the timing advance TA; wherein the TA is determined based on an SSB associated with a first parameter.

12. The method according to claim 1, characterized in that, The method further includes: Transmit a scheduling request and / or third information, where the third information carries a beam failure recovery request.

13. The method according to claim 12, wherein The third information further includes at least one of the following: fourth information and fifth information, where the fourth information is used to indicate one of the following: downlink channel or signal failure, uplink channel or signal failure, downlink channel or signal and uplink channel or signal failure, and the fifth information is used to indicate a candidate beam reference signal identifier.

14. The method according to claim 1, wherein The method further includes: Transmit an uplink channel or signal through spatial domain filtering of the PRACH when the terminal receives the PDCCH in the search space set for recovering the search space identifier after the first number of symbols.

15. The method according to claim 1, characterized in that, The method further includes: Transmit an uplink channel or signal through spatial domain filtering of a candidate beam when the second downlink control information DCI received by the terminal has a flipped NDI value compared to the first DCI scheduling the PUSCH for transmitting a beam recovery request, and the hybrid automatic repeat request HARQ process identifier in the second DCI and the first DCI is the same.

16. The method according to claim 1, wherein The method further includes: Receive a downlink channel or signal using the same quasi-co-location parameters as the candidate beam when the terminal receives the PDCCH in the search space set for recovering the search space identifier after the second number of symbols.

17. The method according to claim 1, wherein The method further includes: Receive a downlink channel or signal using the same quasi-co-location parameters as the candidate beam when the fourth DCI received by the terminal has a flipped NDI value compared to the third DCI scheduling the PUSCH for transmitting a beam recovery request, and the HARQ process identifier in the fourth DCI and the third DCI is the same.

18. A transmission device, applied to a terminal, characterized in that, Includes: A first processing unit; The first processing unit is used to obtain first information, where the first information is used to determine at least one of the following: a first beam failure detection reference signal set and a second beam failure detection reference signal set; a first candidate beam reference signal set and a second candidate beam reference signal set; a first SR configuration and a second SR configuration; a configuration of a third SR; where the first SR configuration is for a first downlink channel or signal beam failure, the second SR configuration is for an uplink channel or signal beam failure, and the third SR configuration is for a first downlink channel or signal and an uplink channel or signal beam failure.

19. A communication device, characterized in that, Includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, where when the program or instruction is executed by the processor, the steps of the method according to any one of claims 1 to 17 are implemented.

20. A readable storage medium, characterized in that, The program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the method according to any one of claims 1 to 17 are implemented.

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