Method and apparatus for determining parameters of coordinated multi-point transmission

Abstract

The application provides a parameter determination method and device for coordinated multi-point transmission, wherein the parameter determination method comprises: determining a first parameter; and determining a second parameter according to the first parameter. Through the application, the problem of uncertainty of parameter values in coordinated multi-point transmission in the related art is solved.

Description

[0001] This application is a divisional application of the Chinese Patent Application No. 201910944567.7, filed on September 30, 2019, entitled "Parameter Determination Method and Device for Multi-transmit Reception Point Transmission". TECHNICAL FIELD

[0002] The present application relates to the field of communication, in particular to a parameter determination method and device for multi-transmit reception point transmission. BACKGROUND

[0003] Multi-transmit reception point (Multi-TRP) is an important technology in wireless communication, which is also sometimes referred to as multi-point cooperative transmission or multi-point transmission. Multi-point cooperative transmission can improve the spectral efficiency of the system by transmitting different transport blocks through different channel characteristics of multiple nodes, and can also obtain diversity gain to improve the robustness of the system by transmitting the same transport block or signaling information through different channel characteristics of multiple nodes. Because of its importance, Multi-TRP is supported in multiple standards, such as Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), and New Radio Access Technology (NR). However, there are still some problems to be solved in the prior art, such as the uncertainty of the value of some parameters in multi-point cooperative transmission.

[0004] In view of the above problems in the related art, there is currently no effective solution. SUMMARY

[0005] Embodiments of the present application provide a parameter determination method and device for multi-point cooperative transmission, to at least solve the problem of uncertainty of the value of some parameters in multi-point cooperative transmission in the related art.

[0006] According to an embodiment of the present application, a parameter determination method for multi-point cooperative transmission is provided, comprising: determining a first parameter; determining a second parameter according to the first parameter.

[0007] According to another embodiment of the present application, a parameter determination device for multi-point cooperative transmission is provided, comprising: a first determination module configured to determine a first parameter; and a second determination module configured to determine a second parameter according to the first parameter.

[0008] According to still another embodiment of the present application, a computer readable storage medium is also provided, in which a computer program is stored, wherein the computer program is configured to perform the steps of any of the above method embodiments when executed.

[0009] According to still another embodiment of the present application, an electronic device is also provided, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to perform the steps of any of the above method embodiments.

[0010] By the present application, the first parameter is determined, and the second parameter is determined according to the first parameter, which realizes the parameter determination of the coordinated multi-point transmission, thereby solving the problem of the uncertainty of the parameter values in the coordinated multi-point transmission in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0012] Figure 1 is a flow chart of the parameter determination method of the coordinated multi-point transmission according to the embodiment of the present application;

[0013] Figure 2 is a structural block diagram of the parameter transmission device of the coordinated multi-point transmission according to the embodiment of the present application. DETAILED DESCRIPTION

[0014] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0015] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0016] First, the concepts in the present application are described as follows:

[0017] In this application, one panel can correspond to one port group (such as an antenna port group, an antenna group), and the two are one-to-one correspondence and can be replaced with each other. Panel refers to an antenna panel, and one transmission reception point (TRP) or a communication node (including but not limited to a terminal, a base station, etc.) can include at least one antenna panel. Each panel has one or more antenna arrays, and multiple arrays can be virtually formed into one antenna port. The base station herein can be various types of base stations, such as a macro base station, a micro base station, a wireless remote, a relay, etc., and the terminal can include any type of receiving device, such as a mobile phone, a data card, a portable device, a notebook, a computer, etc.

[0018] In this application, an identifier (including one of Identifier, Index, indicator, ID) is used to identify the serial number of a thing, an index. For example, the index corresponding to a reference signal resource, a reference signal resource group, a reference signal resource configuration, a channel state information (CSI) report, a CSI report set, a terminal, a base station, a panel, etc.

[0019] In order to transmit data or signaling, the standard divides the physical channels into physical downlink control channel (PDCCH), physical uplink control channel (PUCCH), physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH). Among them, the PDCCH is mainly used to transmit the physical downlink control signaling (Downlink Control Information, DCI), and the PUCCH is mainly used to transmit the uplink control information, such as the channel state information (Channel State Information, CSI), the hybrid automatic repeat request (Hybrid automatic repeat request, HARQ), the scheduling request (Scheduling Request) and the like, and the PDSCH is mainly used to transmit the downlink data, and the PUSCH is mainly used to transmit the uplink data and the CSI, the HARQ-ACK response information and the like. The physical random access channel (Physical Random Access Channel, PRACH) is a channel used to transmit the uplink random access information. Among them, the physical uplink channel includes at least one of the following: PUSCH; PUCCH, PRACH, and the physical downlink channel includes at least one of the following: PDSCH; PDCCH. Among them, the PDCCH carries the control channel information DCI. The uplink data transmitted by the M physical uplink channels can also be referred to as transmission information, and the transmission information can be information before channel coding, or a transmission block, or a large coding block corresponding to one coding block or multiple coding blocks in the uplink control information.

[0020] To improve reliability, one technique is to use hybrid automatic repeat transmission (HARQ), i.e. the terminal or the base station, after receiving a transport block, if the detection finds that the reception is correct, feedback a determination information (Acknowledgement, ACK), otherwise feedback a negative information (Negative Acknowledgement, NACK), and the ACK and NACK information can be collectively referred to as HARQ response, of course, it can also be called as one of the following: HARQ response information, HARQ-ACK information, HARQ-ACK, HARQ-ACK response, ACK / NACK information, ACK / NACK codebook, if not specified, ACK / NACK in this paper can also be referred to as HARQ-ACK.

[0021] In the prior art, a set of HARQ-ACK bits, such as a HARQ-ACK codebook, a HARQ-ACK sub-codebook, is generated for all serving cells (or carrier components, CCs) corresponding to a TRP and the required PUCCH detection occasions Occasion configured by a higher layer, and the HARQ-ACK codebook is fed back in a PUCCH resource or a PUSCH resource, where the encoding order of the HARQ-ACK codebook is a scheme of first frequency domain and then time domain, that is, the different CCs in the first Occasion are arranged from small to large, then the different CCs in the next Occasion are arranged from small to large, and so on until all the Occasions configured by the higher layer are arranged. The HARQ-ACK feedback categories of multiple TRPs in cooperative transmission include independent HARQ feedback and joint HARQ-ACK feedback, where the independent HARQ-ACK feedback (also referred to as separate ACK / NACK feedback, or separate ACK / NACK feedback, or separate HARQ-ACK feedback, where the ACK / NACK information can also be written as HARQ-ACK) is generated by generating M HARQ-ACK codebooks and fed back through a physical uplink resource, such as the HARQ-ACK information corresponding to different CORESET groups or CORESETs in a time unit being fed back in different PUCCHs. The joint ACK / NACK feedback (or joint HARQ-ACK feedback) is generated by generating one HARQ-ACK codebook and fed back through one physical uplink resource, such as the HARQ-ACK information corresponding to different CORESET groups or CORESETs in a time unit being merged and fed back in one PUCCH, for example, the HARQ-ACK sub-codebook corresponding to the first CORESET group being concatenated with the HARQ-ACK sub-codebook corresponding to the second CORESET group. It should be noted that the HARQ-ACK feedback in one HARQ-ACK codebook means that the HARQ-ACK information is included in the HARQ-ACK codebook and is fed back through the physical uplink resource corresponding to the HARQ-ACK codebook.

[0022] In order to improve the reliability of data or signaling transmission, one way is to use repetition transmission. M data (such as PDSCH or PUSCH) transmissions are repetition, which means that the M data carries the same information, such as M data from the same transport block (TB), only the corresponding channel coding redundancy version (RV) is different, or even the M data after channel coding RV is the same. Here, RV refers to different redundancy versions of the channel coded transmission data, which can generally take channel versions {0, 1, 2, 3}. Similarly, M signaling (such as PDCCH or PUCCH) transmissions are repetition, which means that the M signaling carries the same content, such as M PDCCH carrying the same DCI content (such as each field taking the same value), or M PUCCH taking the same value. Among them, M repetition data (such as M repetition PUSCH or M repetition PDSCH) or M repetition signaling (such as M repetition PUCCH or M repetition PDCCH) can come from M different TRPs, or from M different antenna panels, or M different bandwidth parts (Bandwidth Part, BWP), or M different carrier components (Carrier Component, CC), wherein the M panels or M BWPs or M CCs can belong to the same TRP, or belong to multiple TRPs, wherein the repetition transmission scheme includes but is not limited to at least one of the following: space division multiplexing Scheme 1, frequency division multiplexing Scheme 2, time division multiplexing within a time slot Scheme 3, and time division multiplexing between time slots Scheme 4, wherein the frequency division multiplexing Scheme 2 is further divided into two categories according to whether the coding redundancy version of the transport block is the same: when the RV version of the repeated transmission data is the same, it is Scheme 2a, otherwise it is Scheme 2b, and M is an integer greater than 1. Of course, it can also be any combination of the above multiplexing schemes, such as a combination of space division multiplexing and frequency division multiplexing, a combination of time division multiplexing and frequency division multiplexing, etc.

[0023] Here, the PDCCH is needed to be mapped onto a set of resource elements (REs), such as including one or more control channel elements (CCEs), where one RE includes one subcarrier in the frequency domain and one symbol in the time domain. And the set of one or more CCEs for transmitting the PDCCH, also called control resource set (CORESET) sometimes, includes multiple physical resource blocks in the frequency domain and K symbols in the time domain, where K is a natural number, such as K can take 1, 2, 3, etc. Here, the symbol includes but is not limited to one of the following: orthogonal frequency division multiplexing (OFDM), single-carrier frequency division multiplexing multiple access (SC-FDMA), orthogonal frequency division multiple access (OFDMA). And in order to detect the PDCCH, the candidate PDCCH of a certain aggregation level is configured into a set, and the set of candidate PDCCHs under this level is called search space (SS), and the set of multiple search spaces forms a search space set (SS set, SSSET, or SSS), and each terminal can be configured with at least one search space set. And in order to detect the PDCCH, the occasion (i.e., PDCCH monitoring occasion) of the PDCCH detection of the current terminal and the PDCCH candidate (i.e., PDCCH candidate) or PDCCH candidate in the search space are configured, where the occasion is determined by the time domain information of the PDCCH detection, such as the PDCCH monitoring periodicity on the activated downlink bandwidth part (BWP), the PDCCH monitoring offset, the PDCCH monitoring pattern, etc.A candidate, also called a PDCCH monitoring candidate, is a PDCCH to be detected in a search space configuration. In addition, a PDCCH includes multiple formats, each format corresponding to a downlink control information DCI in a corresponding format, and each DCI including multiple specific signaling indication fields. Detection can also be referred to as monitoring and blind detection, and is mainly used to determine which of the multiple PDCCH candidates is the PDCCH used to transmit downlink control information to the terminal. Multiple CORESETs can also be divided into multiple CORESET groups, each CORESET group including at least one CORESET.

[0024] Here, in order to better transmit a PUSCH or a PDSCH, a group of REs of K1 consecutive symbols and L1 frequency domain subcarriers forms a resource block (RB, sometimes also called a physical resource block, PRB, or RB), K and L are positive integers, such as K=12 or 14, and L=12. L2 consecutive virtual RBs form a resource block group (RBG), and L2 is a positive integer, such as 4 or 8, which can be configured by high-layer signaling. A virtual RB is an RB obtained by performing resource mapping on an RB. For continuous RBs using the same precoding, the RBs are referred to as a preceding resource block group (PRG), which generally includes 2 or 4 consecutive RBs.

[0025] In this application, a signal is a reference signal for measuring various parameters, which can include but is not limited to Channel State Information-Reference Signal (CSI-RS) resources, Synchronization Signals Block (SSB) resources, Physical Broadcast Channel (PBCH) resources, Synchronization Broadcast Block / Physical Broadcast Channel (SSB / PBCH) resources, Uplink Sounding Reference Signal (SRS) resources, Positioning Reference Signals (PRS), Phase-tracking reference signal (PTRS). Among them, the CSI-RS resource mainly refers to the Non Zero Power Channel State Information-Reference Signal (NZP-CSI-RS) resource. The interference measurement resource can include but is not limited to Channel State Information-Interference Measurement (CSI-IM), NZP-CSI-RS for Interference Measurement, Zero Power Channel State Information-Reference Signal (ZP-CSI-RS), wherein the functions of CSI-RS and SRS include functions for measuring CSI, beam management, time-frequency tracking, mobility management, etc.

[0026] In this application, a channel includes but is not limited to at least one of the following: PDSCH, PDCCH, PUSCH, PUCCH, and a control channel includes but is not limited to PDCCH and / or PUCCH.

[0027] Embodiment 1

[0028] In this embodiment, a parameter determination method for cooperative multipoint transmission running on a terminal or a transmission node is provided, Figure 1 is a flowchart of the parameter determination method for cooperative multipoint transmission according to an embodiment of the application. It should be noted that, Figure 1 is explained from the terminal side, as Figure 1 shown, the flow includes the following steps:

[0029] Step S102, determine the first parameter;

[0030] In step S104, the second parameter is determined according to the first parameter.

[0031] By steps S102 and S104 of the embodiment, the first parameter is determined, and the second parameter is determined according to the first parameter, which realizes the determination of the parameters of the coordinated multi-point transmission, and thus solves the problem of uncertainty of values of some parameters in the coordinated multi-point transmission in the related art.

[0032] Optionally, the first parameter in the embodiment includes at least one of the following: the number A of PDCCHs scheduling PDSCHs; the number B of CORESET groups in which the A PDCCHs are located; the codebook type of HARQ-ACK; and the feedback type of HARQ-ACK corresponding to different CORESET groups, wherein A and B are positive integers.

[0033] The second parameter includes a HARQ-ACK bit set in which HARQ-ACK of the PDSCH is located.

[0034] The codebook type of HARQ-ACK includes a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook; and the feedback type of HARQ-ACK corresponding to different CORESET groups includes at least one of the following: independent HARQ-ACK feedback and joint HARQ-ACK feedback.

[0035] In one embodiment, the joint HARQ-ACK feedback refers to that HARQ-ACK information corresponding to different CORESET groups is combined into one physical uplink resource for feedback in one time unit, and the independent HARQ-ACK feedback refers to that HARQ-ACK information corresponding to different CORESET groups is respectively fed back in different physical uplink resources in one time unit. Here, the physical uplink resource includes a PUCCH and / or a PUSCH.

[0036] It should be noted that the PDCCH scheduling the PDSCH is the received PDCCH. In addition, the HARQ-ACK corresponding to one CORESET group includes HARQ-ACK of the PDSCH scheduled by the PDCCH in the CORESET group.

[0037] In an optional implementation of the embodiment, in the case where A is equal to 1, the HARQ-ACK of the PDSCH is included in only one HARQ-ACK bit set.

[0038] In the case where A is greater than 1, the HARQ-ACK of the PDSCH is included in C HARQ-ACK bit sets, wherein C is a positive integer less than or equal to A, or C is a positive integer less than or equal to B.

[0039] Further, in case C is greater than 1, the C sets of HARQ-ACK bits for PDSCHs have the same HARQ-ACK values; in case A is greater than 1 and C is less than A, the C sets of HARQ-ACK bits are determined according to the indexes of PDCCHs, wherein the indexes of PDCCHs include one of the following: PDCCH candidate indexes, search space indexes, CORESET indexes, indexes of CORESET groups, for example, the C sets of HARQ-ACK bits are C sets of HARQ-ACK bits corresponding to PDSCHs with the smallest indexes of PDCCHs, or the C sets of HARQ-ACK bits are C sets of HARQ-ACK bits corresponding to PDSCHs with the largest indexes of PDCCHs, or C sets of HARQ-ACK bits corresponding to PDSCHs indicated by higher layer signaling or physical layer signaling; in case A is greater than 1 and C is less than B, the C sets of HARQ-ACK bits are determined according to the indexes of CORESET groups, for example, the C sets of HARQ-ACK bits are C sets of HARQ-ACK bits corresponding to PDSCHs with the smallest indexes of CORESET groups, or the C sets of HARQ-ACK bits are C sets of HARQ-ACK bits corresponding to PDSCHs with the largest indexes of CORESET groups, or C sets of HARQ-ACK bits corresponding to PDSCHs indicated by higher layer signaling or physical layer signaling.

[0040] In an optional implementation of the embodiment, the first parameter comprises a HARQ-ACK feedback type, and the HARQ feedback type is independent feedback HARQ-ACK, and it is determined that the HARQ-ACK of one PDSCH is fed back in a predetermined HARQ-ACK bit set, wherein the predetermined HARQ-ACK bit set corresponds to a predetermined CORESET group. Here, the predetermined CORESET group can include at least one of the following: a high-layer-configured CORESET group, a base station and terminal agreed CORESET group, a default CORESET group, such as the first CORESET group, a CORESET group with the smallest CORESET group index, and a CORESET group with the largest CORESET group index. The predetermined HARQ-ACK bit set can include at least one of the following: a HARQ-ACK codebook corresponding to the predetermined CORESET group, a high-layer-configured HARQ-ACK bit set, a default HARQ-ACK bit set, such as the first HARQ-ACK bit set, a HARQ-ACK bit set with the smallest HARQ-ACK bit set index, and a HARQ-ACK bit set with the largest HARQ-ACK bit set index.

[0041] In another optional implementation of the embodiment, the first parameter comprises a HARQ-ACK feedback type, and the HARQ feedback type is joint feedback HARQ-ACK, and it is determined that the HARQ-ACK is fed back in a first HARQ-ACK bit set and a second HARQ-ACK bit set, wherein the first HARQ-ACK bit set corresponds to a first CORESET group, and the second HARQ-ACK bit set corresponds to a second CORESET group.

[0042] It should be noted that in the embodiments, at least one of the following is included: 1) the HARQ-ACK bit set includes one of the following: a HARQ-ACK codebook, a HARQ-ACK sub-codebook; wherein one HARQ-ACK codebook includes one or more HARQ-ACK sub-codebooks; 2) different HARQ-ACK bit sets correspond to different CORESET groups.

[0043] Optionally, the step S102 of determining the first parameter comprises determining the first parameter according to receiving the first parameter when the method is applied to the terminal.

[0044] Optionally, the step S102 of determining the first parameter further comprises transmitting the determined first parameter when the method is applied to the transmission node.

[0045] In addition, the first parameter in the embodiment can also include a data transmission repetition scheme, and the precoding information is determined according to the data transmission repetition scheme.

[0046] The first parameter comprises at least one of the following: 1) the data transmission repetition scheme is frequency division multiplexing, and it is determined that the same precoding is used for the continuous resources corresponding to the same TCI state in one precoding resource block group (PRG); and 2) the data transmission repetition scheme is frequency division multiplexing, and it is determined that the precoding corresponding to different TCI states in one wideband PRG is different, or it is determined that the PRBs corresponding to different TCI states in one wideband PRG are discontinuous.

[0047] In another optional implementation of the embodiment, the first parameter comprises: the number E of configuration values of the same type of parameters configured in the first frequency domain bandwidth and the number F of CORESET groups in the second frequency domain bandwidth. The second parameter comprises at least one of the following: the correspondence between one CORESET group and the same type of parameters, and the scheduling of the CORESET group in the first frequency domain bandwidth, and E and F are positive integers.

[0048] The same type of parameters are parameters of channels and / or signals; the first frequency domain bandwidth and the second frequency domain bandwidth are the same or different frequency domain bandwidths, and the channels and / or signals in the first frequency domain bandwidth are scheduled by the control channels in the second frequency domain bandwidth.

[0049] Based on this, in the case where E is less than F, the embodiment can comprise at least one of the following: 1) only E CORESET groups of the F CORESET groups schedule the channels in the first frequency domain bandwidth; and 2) (F-E) CORESET groups of the F CORESET groups cannot schedule the channels in the first frequency domain bandwidth; wherein the E CORESET groups and the E sets of configuration values of the same type of parameters are in one-to-one correspondence.

[0050] In addition, in the case where E is less than F, the embodiment can further comprise at least one of the following: the intersection of the time-frequency resources between the channels and / or signals scheduled by G CORESET groups of the F CORESET groups is empty, wherein G is a positive integer less than or equal to F; and wherein the G CORESET groups correspond to the same configuration values of the same type of parameters.

[0051] In the embodiment, the number E of values of the same type of parameters configured in the first frequency domain bandwidth is greater than or equal to the number F of CORESET groups in the second frequency domain bandwidth, and different CORESET groups of the F CORESET groups correspond to different values in the E values.

[0052] The same type of parameters are parameters of channels and / or signals; the first frequency domain bandwidth and the second frequency domain bandwidth are the same or different frequency domain bandwidths, and the channels and / or signals in the first frequency domain bandwidth are scheduled by the control channels in the second frequency domain bandwidth.

[0053] Optionally, in this embodiment, parameter values ​​for channels and / or signals are configured in at least one COREST in the CORESET group for the scheduling of channels and / or signals by the CORESET group.

[0054] It should be noted that the same type of parameters in this embodiment include scrambling parameters of the channel, such as scrambling code information of PDSCH, scrambling code information of PUSCH, scrambling code information of PDCCH, and scrambling code information of PDCCH. The scrambling code information here can be the index of the scrambling code, the scrambling code sequence, the initial value of the scrambling code sequence, and parameters related to the initial value of the scrambling code sequence.

[0055] Optionally, in this document, the channels include, but are not limited to, at least one of the following: PDSCH and PUSCH, and the signals include, but are not limited to, at least one of the following: PDCCH and PUCCH.

[0056] In another optional embodiment of this example, the first parameter may include N physical downlink shared channel (PDSCH) scrambling codes and M control resource sets (CORESET) groups;

[0057] Among them, at least one of the following is included:

[0058] M CORESET groups correspond to M HARQ-ACK codebooks;

[0059] The M CORESET groups correspond to independent HARQ-ACK codebooks;

[0060] M CORESET groups are associated with the same PDSCH scrambling code;

[0061] The time-domain resources of PDSCH scheduled by M COSRET groups do not overlap;

[0062] Data transmission occurs only in the carrier component CC configured with PDSCH scrambling information;

[0063] CORESET schedules PDSCH only when PDSCH scrambling information is configured;

[0064] Only CC feedback HARQ-ACK response information configured with PDSCH scrambling code exists;

[0065] Where N and M are positive integers, and N is less than M.

[0066] In another optional embodiment of this invention, the first parameter may include: N PDSCH scrambling codes and M CORESETs; wherein,

[0067] At least one of the M CORESETs is configured with PDSCH scrambling information; or,

[0068] PDSCH scrambling information of the CORESET configuration is used for all carrier components or BWPs corresponding to the CORESET;

[0069] wherein N and M are positive integers, and N is greater than or equal to M.

[0070] It should be noted that the first parameter includes the configuration of at least one carrier component, and the system defaults that the CORESET higher layer index information of the CC corresponding to the CORESET higher layer index information is 0.

[0071] The embodiments of the present application will be described below in conjunction with optional embodiments of the present application.

[0072] Optional embodiment one

[0073] This optional embodiment is used to illustrate that M repetition transmissions of PDCCH schedule one PDSCH, and the construction of the independent HARQ-ACK feedback HARQ-ACK codebook.

[0074] Wherein, taking M greater than or equal to 2 TRPs as an example, in order to improve reliability, the M TRPs repeatedly transmit M times of PDCCH in at least one of the time domain, frequency domain, and spatial domain through repetition transmission technology, and the contents of the M times of PDCCH can be the same, which all schedule the same PDSCH. Here, each TRP can simultaneously transmit PDSCH on multiple CCs through carrier aggregation technology.

[0075] Here, the M PDCCHs correspond to M CORESET groups, each CORESET group corresponds to one TRP, and the M PDCCHs correspond to M HARQ-ACK codebooks respectively, that is, separated ACK / NACK feedback (or independent HARQ-ACK feedback).

[0076] The terminal receives the M PDCCHs, respectively performs blind detection, and determines the time-frequency resources of the scheduled PDSCH according to the result of the blind detection, to receive the PDSCH and demodulate the PDSCH, if the demodulation is correct, the HARQ-ACK is ACK, otherwise it is NACK. For the current detection occasion and the current CC, the HARQ-ACK corresponding to the PDSCH is fed back in the predetermined HARQ-ACK codebook, such as the first HARQ-ACK codebook, even if the first PDCCH is not detected, it is also fed back in the first HARQ-ACK codebook. Here, the predetermined HARQ-ACK codebook can be a high-layer configured HARQ-ACK, or a HARQ-ACK codebook with the smallest HARQ-ACK codebook index value, or a HARQ-ACK codebook with the largest HARQ-ACK codebook index value. If there is only one HARQ-ACK codebook, the HARQ-ACK is fed back in the HARQ-ACK codebook.

[0077] The base station obtains the HARQ-ACK codebook corresponding to the PDSCH by receiving a physical uplink channel carrying a predetermined HARQ-ACK codebook, so as to determine the HARQ-ACK information of the PDSCH.

[0078] It should be noted that the TRP in the present optional embodiment can also be replaced by a transmission resource of at least one of an antenna panel, a BWP, and a CC, that is, the M PDCCHs can be transmitted by M antenna panels or M BWPs or M CCs.

[0079] Here, the HARQ-ACK, also known as HARQ response information or HARQ-ACK information, takes a value of ACK or NACK.

[0080] Optional implementation two

[0081] The present optional embodiment is used to illustrate that M repetition transmission PDCCHs schedule one PDSCH, and jointly feedback HARQ-ACK, and the construction of the HARQ-ACK codebook.

[0082] Taking M greater than or equal to 2 TRPs as an example, in order to improve reliability, the M TRPs repeatedly transmit the PDCCH M times in at least one of the time domain, the frequency domain, and the spatial domain by repetition technology, and the contents of the M PDCCHs can be the same, which all schedule the same PDSCH. Here, each TRP can simultaneously transmit the PDSCH on multiple CCs by carrier aggregation technology.

[0083] In this optional embodiment, the M PDCCHs correspond to M CORESET groups, each of which corresponds to a TRP, and the M PDCCHs correspond to one joint HARQ-ACK codebook, i.e., joint ACK / NACK feedback.

[0084] The terminal receives the M PDCCHs, performs blind detection respectively, and determines the time-frequency resources of the scheduled PDSCH according to the results of the blind detection to receive the PDSCH and demodulate the PDSCH. If the demodulation is correct, the HARQ-ACK is ACK, otherwise, it is NACK. For the current detection occasion and the current CC, the ith PDCCH corresponds to the ith HARQ-ACK sub-codebook, and the HARQ-ACK corresponding to the PDSCH is the same in the M HARQ-ACK sub-codebooks, either all ACK or all NACK, i = 1, …, M. The M HARQ-ACK sub-codebooks are concatenated into one joint codebook, for example, the bit information of the kth HARQ-ACK sub-codebook is concatenated after the bit information of the (k-1)th HARQ-ACK sub-codebook to form a new HARQ-ACK codebook, and the HARQ-ACK codebook is fed back through an uplink physical channel, k = 2, …, M.

[0085] The base station obtains the HARQ-ACK codebook by receiving the physical uplink channel carrying the HARQ-ACK codebook, thereby obtaining the HARQ-ACK of the PDSCH.

[0086] It should be noted that the TRP in this optional embodiment can also be replaced by transmission resources of at least one of the antenna panels, BWP, and CC, i.e., the M PDCCHs can be transmitted by M antenna panels or M BWPs or M CCs.

[0087] Here, the HARQ-ACK, which can also be referred to as HARQ response information or HARQ-ACK information, takes values of ACK or NACK.

[0088] Optional Embodiment Three

[0089] This optional embodiment is used to illustrate the precoding information determination problem of the M repetition transmitted PDSCHs.

[0090] This optional embodiment takes M greater than or equal to 2 TRPs as an example. In order to improve reliability, the M TRPs repeatedly transmit the PDSCH M times in at least one of the time domain, frequency domain, and spatial domain through the repetition transmission technology, and the M times of repeated transmission PDSCHs can come from the same or different RV versions of the same transport block.

[0091] In this optional implementation, M TRPs, each TRP corresponds to a CORESET group, the higher layer signaling can configure a higher layer index for each CORESET, such as CORESET group index i, i = 0, …, M-1. Each CORESET group corresponds to a transmission configuration indication state (TCI state), each TCI state includes at least one reference signal and at least one quasi co-location type, wherein quasi co-location (QCL) includes at least 4 types, according to the category of the protected large scale information, it is divided into QCL-Type A, QCL-Type B, QCL-Type C, QCL-Type D.

[0092] Wherein, M TRPs transmit M PDSCHs through frequency division multiplexing repetition, the PDSCH of each TRP corresponds to a TCI state, and the terminal and the base station determine which TRP the PDSCH comes from through the TCI state, or determine that the ith PDSCH corresponds to the ith TCI state, the PDCCH, PDSCH and reference signal with the same TCI state come from the same TRP, and here the TRP can be replaced by M panels of K TRPs, or M CCs of K TRPs, where K is a positive integer less than or equal to M, which can be 1.

[0093] When the base station configures the time-frequency resources to the terminal, the same pre-coding is used for the continuous RBs in the PRG corresponding to the same TCI, and different pre-coding is used for the continuous RBs in the PRG corresponding to different TCIs. Or the frequency domain resources corresponding to two TCI states are non-continuous, or the base station assumes that the same pre-coding is used in any continuously allocated RB, and the continuous RB is in a PRG and corresponds to the same TCI state.

[0094] When the terminal receives the PDSCH, the terminal assumes that the same pre-coding is used in any continuously allocated RB, and the continuous RB is in a PRG and corresponds to the same TCI state.

[0095] That is, the terminal or the base station assumes that the RBs in the PRG with the same TCI state are continuous and use the same precoding, while the RBs in the PRG with different TCI states are discontinuous and need to use different precoding, because different TCI states correspond to different TRPs, and their general precoding is different and cannot be jointly estimated.

[0096] Optional implementation four

[0097] This optional implementation is used to illustrate the parameter determination problem of the number of PDSCH scrambling of M-TRP transmission being less than the number of CORESET groups.

[0098] Taking M greater than or equal to 2 TRPs as an example, each TRP can simultaneously transmit PDSCH on multiple CCs through the carrier aggregation technology, such as each TRP including at least one CC. It is assumed here that each CORESET group corresponds to one TRP, and the PDSCH scheduled by the PDCCH of each CORESET group is independent HARQ-ACK feedback, that is, there are M independent HARQ-ACK codebooks.

[0099] In one transmission, the i-th TRP only uses one CC to transmit data, such as only using CC1 to transmit PDSCH, so that the base station or the terminal determines that the i-th TRP corresponding HARQ-ACK codebook does not include other HARQ responses outside CC1, that is, only feedback ACK / NACK of CC1, and the i-th TRP can be any one of the M TRPs.

[0100] In one transmission, the k-th CC has only one PDSCH scrambling, that is, only one TRP transmits PDSCH on the k-th CC, and here k can be a positive integer, such as 1, 2, 3, 4, and the terminal only receives the PDSCH of one TRP on the k-th CC. In this scenario, if the PDSCH scheduled by the PDCCH of the M CORESET groups is jointly fed back ACK / NACK, the higher layer can only configure one CORESET group.

[0101] In one transmission, the j-th CORESET group corresponding BWP or CC does not include PDSCH scrambling, so that the base station and the terminal determine that the CORESET group corresponding base station does not transmit PDSCH, and the j-th CORESET group can be any one of the M CORESET groups, and j takes one of 1, …, M.

[0102] In one transmission, the M CORESET groups are associated to the same PDSCH scrambling code. And the PDSCH scheduled by the M CORESET groups are transmitted on non-overlapping time domain, or non-overlapping frequency domain.

[0103] Optional implementation five

[0104] This optional implementation is used to illustrate the parameter determination problem of the number of PDSCH scrambling codes of M TRP transmission being greater than the number of CORESET groups.

[0105] This optional implementation takes M greater than or equal to 2 TRPs as an example, each TRP can transmit PDSCH on multiple CCs at the same time through carrier aggregation technology, such as each TRP including at least one CC. Here it is assumed that each CORESET group corresponds to one TRP.

[0106] In one transmission, the PDSCH scrambling code index (or PDSCH scrambling code indicator, ID) is configured in the jth CORESET group through high layer signaling. The PDSCH scrambling code index is used to indicate a PDSCH scrambling code sequence, which is used to scramble the transmission bits of PDSCH, thereby reducing the interference between each PDSCH. The PDSCH scrambling code ID can be used for all CCs or BWPs scheduled by the jth CORESET group, or in other words, the PDSCH in each CC (BWP) scheduled by the jth CORESET group corresponds to the same PDSCH scrambling code ID. The jth CORESET group can be any one of the M CORESET groups.

[0107] Optional implementation six

[0108] This optional implementation is used to illustrate the default value problem of the default CORESET group of the default value of the TRP corresponding to this CC when there is no high layer parameter index configured in the CORESET of M TRP transmission, or there is more than one CORESET, but some TRPs have only one CC.

[0109] This optional implementation takes M greater than or equal to 2 TRPs as an example, each TRP can transmit PDSCH on multiple CCs at the same time through carrier aggregation technology, such as each TRP including at least one CC. Here it includes more than one CORESET group.

[0110] In one transmission, only one CC is used to transmit data in the jth TRP through high layer signaling. While M CORESETs are configured by high layer signaling, the CORESET group corresponding to the CC used to transmit data in the jth TRP is CORESET group 0 by default, or the CORESET group with the smallest high layer index value. Here, the jth TRP can be any one of the M TRPs.

[0111] In one transmission, only K CCs are used to transmit data in the jth TRP through high layer signaling. While M CORESETs are configured by high layer signaling, the CORESET group corresponding to the CC used to transmit data in the jth TRP is CORESET group 0 to CORESET group K by default, or the K CORESET groups with the smallest high layer index value. Here, the jth TRP can be any one of the M TRPs, and K is a positive integer less than M.

[0112] From the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be realized by means of software and a necessary general hardware platform, and of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) and includes a plurality of instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device) to execute the method of each embodiment of the present application.

[0113] Embodiment 2

[0114] In this embodiment, a parameter determination apparatus for coordinated multi-point transmission is also provided, which is used to implement the above embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware is also possible and is contemplated.

[0115] Figure 2 is a structural block diagram of the parameter determination apparatus for coordinated multi-point transmission according to the embodiments of the present application, which is applied to the terminal side, as shown in Figure 2 The apparatus includes a first determination module 22 for determining a first parameter, and a second determination module 24 coupled to the first determination module 22 for determining a second parameter according to the first parameter.

[0116] Optionally, the first parameter in the embodiment includes at least one of the following: a number A of PDCCHs scheduling PDSCHs; a number B of CORESET groups in which the A PDCCHs are located; a codebook type of HARQ-ACK; and a feedback type of HARQ-ACK corresponding to different CORESET groups, where A and B are positive integers.

[0117] The second parameter includes a HARQ-ACK bit set in which HARQ-ACK of the PDSCH is located.

[0118] The codebook type of HARQ-ACK includes a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook. The feedback type of HARQ-ACK corresponding to different CORESET groups includes at least one of the following: independent HARQ-ACK feedback and joint HARQ-ACK feedback.

[0119] It should be noted that the PDCCH scheduling the PDSCH is a received PDCCH. In addition, the HARQ-ACK corresponding to one CORESET group includes HARQ-ACK of a PDSCH scheduled by a PDCCH in the CORESET group.

[0120] In an optional implementation of the embodiment, in a case where A is equal to 1, the HARQ-ACK of the PDSCH is included in only one HARQ-ACK bit set.

[0121] In a case where A is greater than 1, the HARQ-ACK of the PDSCH is included in C HARQ-ACK bit sets, where C is a positive integer less than or equal to A, or C is a positive integer less than or equal to B.

[0122] In addition, in a case where C is greater than 1, the C HARQ-ACK bit sets include HARQ-ACK of the PDSCH with the same value. In a case where A is greater than 1 and C is less than A, the C HARQ-ACK bit sets are determined according to an index corresponding to the PDCCH, where the index corresponding to the PDCCH includes at least one of the following: a PDCCH candidate index, a search space index, a CORESET index, and an index of a CORESET group. In a case where A is greater than 1 and C is less than B, the C HARQ-ACK bit sets are determined according to an index of a CORESET group in which the PDCCH is located.

[0123] In an optional implementation of the embodiment, the first parameter comprises a HARQ-ACK feedback type, and the HARQ feedback type is independent feedback HARQ-ACK, and it is determined that the HARQ-ACK of one PDSCH is fed back in a predetermined HARQ-ACK bit set, wherein the predetermined HARQ-ACK bit set corresponds to a predetermined CORESET group.

[0124] In another optional implementation of the embodiment, the first parameter comprises a HARQ-ACK feedback type, and the HARQ feedback type is joint feedback HARQ-ACK, and it is determined that the HARQ-ACK is fed back in both a first HARQ-ACK bit set and a second HARQ-ACK bit set, wherein the first HARQ-ACK bit set corresponds to a first CORESET group, and the second HARQ-ACK bit set corresponds to a second CORESET group.

[0125] It should be noted that in the embodiments, at least one of the following is included: 1) the HARQ-ACK bit set comprises one of the following: a HARQ-ACK codebook, a HARQ-ACK sub-codebook; wherein one HARQ-ACK codebook comprises one or more HARQ-ACK sub-codebooks; 2) different HARQ-ACK bit sets correspond to different CORESET groups.

[0126] In addition, the first parameter in the embodiment can also include a data transmission repetition scheme, and the precoding information is determined according to the data transmission repetition scheme.

[0127] Among them, including at least one of the following: 1) the data transmission repetition scheme is frequency division multiplexing, and it is determined that the same precoding is used for the continuous resources corresponding to the same TCI state in one precoding resource block group (PRG). 2) The data transmission repetition scheme is frequency division multiplexing, and it is determined that the precodings corresponding to different TCI states in one wideband PRG are different, or it is determined that the PRBs corresponding to different TCI states in one wideband PRG are discontinuous.

[0128] In still another optional implementation of the embodiment, the first parameter comprises: the number E of configuration values of the same type of parameter configured in a first frequency domain bandwidth and the number F of CORESET groups in a second frequency domain bandwidth. The second parameter comprises at least one of the following: a correspondence between a CORESET group and a same type of parameter, scheduling a CORESET group in the first frequency domain bandwidth, and E and F are positive numbers.

[0129] Among them, the same type of parameter is a parameter of a channel and / or a signal; the first frequency domain bandwidth and the second frequency domain bandwidth are the same or different frequency domain bandwidths, and the channel and / or the signal in the first frequency domain bandwidth are scheduled by the control channel in the second frequency domain bandwidth.

[0130] Based on this, in the case that E is less than F, the embodiment can include at least one of the following: 1) only E CORESET groups in the F CORESET groups schedule channels in the first frequency domain bandwidth; 2) (F-E) CORESET groups in the F CORESET groups cannot schedule channels in the first frequency domain bandwidth; wherein the E CORESET groups and the E sets of configuration values of the same type of parameters are in one-to-one correspondence.

[0131] In addition, in the case that E is less than F, the embodiment can also include at least one of the following: the intersection of time-frequency resources between the channels and / or signals scheduled by G CORESET groups in the F CORESET groups is empty, where G is a positive integer less than or equal to F; wherein the G CORESET groups correspond to the same configuration value of the same type of parameters.

[0132] In the embodiment, the number E of values of the same type of parameters configured in the first frequency domain bandwidth is greater than or equal to the number F of CORESET groups in the second frequency domain bandwidth, and different CORESET groups in the F CORESET groups correspond to different values in the E values;

[0133] Wherein, the same type of parameters are parameters of channels and / or signals; the first frequency domain bandwidth and the second frequency domain bandwidth are the same or different frequency domain bandwidths, and the channels and / or signals in the first frequency domain bandwidth are scheduled by control channels in the second frequency domain bandwidth.

[0134] Optionally, in the embodiment, the parameter values of the channels and / or signals are configured in at least one COREST in the CORESET group, for the channels and / or signals scheduled by the CORESET group.

[0135] It should be noted that the same type of parameters in the embodiment include scrambling parameters of channels, such as scrambling information of PDSCH, scrambling information of PUSCH, scrambling information of PDCCH, scrambling information of PDCCH, and the scrambling information here can be an index of a scrambling code, a scrambling sequence, an initial value of a scrambling sequence, and a parameter related to the initial value of the scrambling sequence.

[0136] In another optional implementation of the embodiment, the first parameter can include N physical downlink shared channel PDSCH scrambling information and M control resource set CORESET groups;

[0137] Wherein, it includes at least one of the following:

[0138] The M CORESET groups correspond to M HARQ-ACK codebooks;

[0139] The M CORESET groups correspond to HARQ-ACK codebooks that are independently fed back;

[0140] M CORESET groups are associated with the same PDSCH scrambling code;

[0141] PDSCH time domain resources scheduled by the M CORESET groups do not overlap;

[0142] Data transmission is only performed on a carrier component (CC) configured with PDSCH scrambling code information;

[0143] PDSCH is scheduled by a CORESET configured with PDSCH scrambling code information;

[0144] HARQ-ACK feedback information is only provided for a CC configured with PDSCH scrambling code information;

[0145] wherein N and M are positive integers, and N is less than M.

[0146] In still another optional implementation of the embodiment, the first parameter can include N PDSCH scrambling code information and M CORESETs; wherein,

[0147] At least one of the M CORESETs is configured with PDSCH scrambling code information; or,

[0148] The PDSCH scrambling code information configured by the CORESET is used for all carrier components or BWP corresponding to the CORESET;

[0149] wherein N and M are positive integers, and N is greater than or equal to M.

[0150] It should be noted that the first parameter includes the configuration of at least one carrier component, and the system defaults that the value of the CORESET higher layer index information corresponding to the CC not including the CORESET higher layer index information is 0.

[0151] It should be noted that the above modules can be implemented by software or hardware, and for the latter, the following implementation manners can be used, but are not limited thereto: the above modules are located in the same processor; or the above modules are located in different processors in any combination.

[0152] Embodiment 3

[0153] The embodiment of the application further provides a storage medium, which stores a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

[0154] Optionally, in the embodiment, the above storage medium can be configured to store a computer program for executing the following steps:

[0155] S1, determining a first parameter;

[0156] S2, determining the second parameter according to the first parameter.

[0157] Optionally, in the embodiment, the storage medium can include but is not limited to a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various storage media that can store computer programs.

[0158] The embodiment of the present application also provides an electronic device including a memory and a processor, the memory storing a computer program, and the processor being arranged to execute the computer program to perform the steps in any of the above method embodiments.

[0159] Optionally, the electronic device can further include a transmission device and an input / output device, wherein the transmission device is connected with the processor, and the input / output device is connected with the processor.

[0160] Optionally, in the embodiment, the processor can be arranged to execute the following steps through the computer program:

[0161] S1, determining a first parameter;

[0162] S2, determining a second parameter according to the first parameter.

[0163] Optionally, specific examples in the embodiment can refer to the examples described in the above embodiments and optional implementation manners, and the embodiment will not be described here.

[0164] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be realized by general computing devices, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and optionally, they can be realized by program codes executable by the computing devices, so that they can be stored in storage devices and executed by the computing devices, and in some cases, the steps shown or described can be executed in different order, or they can be manufactured into individual integrated circuit modules, or multiple modules or steps can be manufactured into a single integrated circuit module. Thus, the present application is not limited to any specific combination of hardware and software.

[0165] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of determining parameters performed in a wireless terminal, the method comprising: obtaining a first parameter; determining that the first parameter comprises a data transmission repetition scheme, the first parameter further comprising at least one of: a number A of physical downlink control channels (PDCCHs) scheduling physical downlink shared channels (PDSCHs), a number B of control resource set (CORESET) groups in which the A PDCCHs are located, a codebook type of hybrid automatic repeat transmission (HARQ)-acknowledgement (ACK), and a feedback type of HARQ-ACK corresponding to different CORESET groups, wherein A and B are positive integers; determining, in response to the data transmission repetition scheme indicating a frequency division multiplexing scheme, that contiguous radio resources corresponding to a same transmission configuration indication (TCI) state in one precoding resource block group (PRG) use a same precoding; and determining a second parameter according to the first parameter, the second parameter comprising a set of HARQ-ACK bits in which HARQ-ACKs of the PDSCHs are included; wherein when A is equal to 1, the HARQ-ACKs of the PDSCHs are included in only one set of HARQ-ACK bits; when A is greater than 1, the HARQ-ACKs of the PDSCHs are included in C sets of HARQ-ACK bits, wherein C is a positive integer less than or equal to A, or C is a positive integer less than or equal to B. 2.The method of claim 1, wherein wherein the codebook type of HARQ-ACK comprises a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook; and the feedback type of HARQ-ACK corresponding to different CORESET groups comprises at least one of: independent HARQ-ACK feedback and joint HARQ-ACK feedback.

3. The method of claim 1, wherein, The method further comprises: when C is greater than 1, determining that the C sets of HARQ-ACK bits include HARQ-ACKs of the PDSCHs with same values; when A is greater than 1 and C is less than A, determining the C sets of HARQ-ACK bits according to indices corresponding to the PDCCHs, wherein the indices corresponding to the PDCCHs comprise one of: PDCCH candidate indices, search space indices, CORESET indices, and CORESET group indices; when A is greater than 1 and C is less than B, determining the C sets of HARQ-ACK bits according to indices of CORESET groups in which the PDCCHs are located. 4.The method of claim 1, wherein a value of C is obtained according to at least one of the following parameters: the codebook type of HARQ-ACK, and the feedback type of HARQ-ACK corresponding to different CORESET groups. 5.The method of claim 2, further comprising at least one of: In response to the feedback type of the HARQ being independent HARQ-ACK feedback, it is determined that the HARQ-ACK is fed back in a predetermined HARQ-ACK bit set, wherein, the predetermined set of HARQ-ACK bits corresponds to a predetermined CORESET group. The response type to HARQ is a joint HARQ-ACK feedback, which determines that HARQ-ACK is fed back in B sets of HARQ-ACK bits, wherein the B sets of HARQ-ACK bits correspond to B CORESET groups.

6. The method according to claim 2, wherein, The HARQ-ACK bit set includes one of the following: a HARQ-ACK codebook, a HARQ-ACK sub-codebook, wherein one of the HARQ-ACK codebooks includes at least one HARQ-ACK sub-codebook; or Different sets of HARQ-ACK bits correspond to different CORESET groups.

7. The method of claim 1, wherein, The TCI state is associated with at least one reference signal and at least one quasi-co-position QCL type.

8. The method of claim 7, wherein, The at least one QCL type belongs to at least one of a set of at least four QCL types distinguished based on different types of large-scale information.

9. The method of claim 1, wherein, The first parameter also includes the number E of the configuration values ​​of the same type of parameter configured in the first frequency domain bandwidth and the number F of the CORESET groups in the second frequency domain bandwidth, where E and F are positive integers; The second parameter also includes at least one of the following: the correspondence between the CORESET group and the same type of parameter, and the CORESET group that schedules the first frequency domain bandwidth; The same type of parameters are parameters of the channel and / or the signal; and The first frequency domain bandwidth and the second frequency domain bandwidth are the same or different frequency domain bandwidths, and the channels and / or signals in the first frequency domain bandwidth are scheduled by the control channels in the second frequency domain bandwidth.

10. A transmission method executed in a communication node, the method comprising: Send a first parameter to the wireless terminal. The first parameter includes a data transmission repetition scheme. The first parameter also includes at least one of the following: the number A of physical downlink control channels (PDCCHs) that schedule physical downlink shared channels (PDSCHs), the number B of control resource sets (CORESETs) to which A PDCCHs are located, the codebook type of hybrid automatic repeat transmission (HARQ-ACK), and the feedback type of HARQ-ACK corresponding to different CORESETs, where A and B are positive integers. The first parameter instructs the wireless terminal to use the same precoding for consecutive wireless resources in a precoded resource block group (PRG) corresponding to the same Transmission Configuration Indication (TCI) state; The first parameter is used by the wireless terminal to determine the second parameter, the second parameter including the set of HARQ-ACK bits in which the HARQ-ACK of the PDSCH is located; in, When A equals 1, the HARQ-ACK of the PDSCH is contained in only one set of HARQ-ACK bits; When A is greater than 1, the HARQ-ACK of the PDSCH is included in a set of C HARQ-ACK bits, where C is a positive integer less than or equal to A, or C is a positive integer less than or equal to B.

11. The method according to claim 10, wherein The codebook type of the HARQ-ACK includes a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook; and The feedback type of the HARQ-ACK corresponding to the different CORESET groups includes at least one of the following: independent HARQ-ACK feedback, joint HARQ-ACK feedback.

12. The method of claim 11, wherein, The HARQ-ACK bit set includes one of the following: a HARQ-ACK codebook, a HARQ-ACK sub-codebook, wherein one HARQ-ACK codebook includes at least one HARQ-ACK sub-codebook; or Different HARQ-ACK bit sets correspond to different CORESET groups.

13. The method of claim 10, wherein, The TCI state is associated with at least one reference signal and at least one quasi co-location (QCL) type.

14. The method of claim 13, wherein, The at least one QCL type belongs to at least one of a set of at least four QCL types distinguished according to different types of large-scale information.

15. The method of claim 10, wherein, The first parameter further includes a number E of configuration values of the same type of parameter configured in the first frequency domain bandwidth and a number F of CORESET groups in the second frequency domain bandwidth, wherein E and F are positive integers; The second parameter further includes at least one of the following: a correspondence between the CORESET groups and the same type of parameter, a CORESET group scheduling the first frequency domain bandwidth; The same type of parameter is a parameter of a channel and / or a signal; And The first frequency domain bandwidth and the second frequency domain bandwidth are the same frequency domain bandwidth or different frequency domain bandwidths, and the channel and / or the signal in the first frequency domain bandwidth are scheduled by the control channel in the second frequency domain bandwidth.

16. A wireless communication apparatus comprising a memory for storing instructions and a processor in communication with the memory, the processor configured to execute the instructions to perform the following operations: obtaining a first parameter; The first parameter comprises a data transmission repetition scheme, and the first parameter further comprises at least one of the following: a number A of physical downlink control channels PDCCHs scheduling physical downlink shared channels PDSCHs, a number B of control resource set CORESET groups in which the A PDCCHs are located, a codebook type of hybrid automatic repeat transmission HARQ-acknowledgement ACK, and a feedback type of HARQ-ACK corresponding to different CORESET groups. A and B are positive integers; in response to the data transmission repetition scheme indicating a frequency division multiplexing scheme, determining that contiguous radio resources corresponding to a same transmission configuration indication (TCI) state in one precoding resource block group (PRG) use a same precoding; and determining a second parameter according to the first parameter, the second parameter including a HARQ-ACK bit set in which HARQ-ACK of the PDSCH is located, wherein, when A is equal to 1, the HARQ-ACK of the PDSCH is contained in only one HARQ-ACK bit set; and when A is greater than 1, the HARQ-ACK of the PDSCH is included in C HARQ-ACK bit sets, where C is a positive integer less than or equal to A, or C is a positive integer less than or equal to B.

17. The wireless communication apparatus of claim 16, wherein The codebook type of the HARQ-ACK includes a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook; and The feedback type of the HARQ-ACK corresponding to the different CORESET groups includes at least one of the following: independent HARQ-ACK feedback, joint HARQ-ACK feedback.

18. The wireless communication apparatus of claim 16, wherein, The processor is further configured to execute the instructions to implement the following operations: when C is greater than 1, determining that the C sets of HARQ-ACK bits include the same value of HARQ-ACK of the PDSCH; when A is greater than 1 and C is less than A, determining the C sets of HARQ-ACK bits according to indexes corresponding to the PDCCH, wherein the indexes corresponding to the PDCCH include one of the following: PDCCH candidate indexes, search space indexes, CORESET indexes, CORESET group indexes; when A is greater than 1 and C is less than B, determining the C sets of HARQ-ACK bits according to indexes of CORESET groups in which the PDCCH is located.

19. The wireless communication apparatus of claim 16, wherein, The value of C is obtained according to at least one of the following parameters: a codebook type of the HARQ-ACK, and a feedback type of HARQ-ACK corresponding to the CORESET group.

20. The wireless communication apparatus of claim 17, the processor is further configured to execute the instructions to implement the following operations: In response to the feedback type of the HARQ being independent HARQ-ACK feedback, it is determined that the HARQ-ACK is fed back in a predetermined HARQ-ACK bit set, wherein, the predetermined set of HARQ-ACK bits corresponds to a predetermined CORESET group; in response to a feedback type of HARQ being joint HARQ-ACK feedback, determining that HARQ-ACK is fed back in B sets of HARQ-ACK bits, wherein the B sets of HARQ-ACK bits correspond to B CORESET groups.

21. The wireless communication apparatus of claim 17, wherein, the set of HARQ-ACK bits includes one of the following: a HARQ-ACK codebook, a HARQ-ACK sub-codebook, wherein one HARQ-ACK codebook includes at least one HARQ-ACK sub-codebook; or different sets of HARQ-ACK bits correspond to different CORESET groups.

22. The wireless communication apparatus of claim 16, wherein, The TCI state is associated with at least one reference signal and at least one quasi co-location, QCL, type.

23. The wireless communication apparatus of claim 22, wherein, The at least one QCL type belongs to at least one of a set of at least four QCL types distinguished according to different kinds of large-scale information.

24. The wireless communication apparatus of claim 16, wherein, The first parameter further includes a number E of configuration values of the same kind of parameter configured in the first frequency domain bandwidth and a number F of CORESET groups in the second frequency domain bandwidth, wherein E and F are positive integers; The second parameter further includes at least one of the following: a correspondence between the CORESET groups and the same kind of parameter, and a CORESET group scheduling the first frequency domain bandwidth; The same kind of parameter is a parameter of a channel and / or a signal; and The first frequency domain bandwidth and the second frequency domain bandwidth are the same frequency domain bandwidth or different frequency domain bandwidths, and a channel and / or a signal in the first frequency domain bandwidth is scheduled by a control channel in the second frequency domain bandwidth.

25. A wireless communication apparatus, comprising a memory for storing instructions and a processor in communication with the memory, the processor configured to execute the instructions to implement the following operations: transmitting, to a wireless terminal, a first parameter, the first parameter comprising a data transmission repetition scheme, the first parameter further comprising at least one of: a number A of physical downlink control channels PDCCHs scheduling physical downlink shared channels PDSCHs, a number B of control resource set CORESET groups in which the A PDCCHs are located, a codebook type of hybrid automatic repeat transmission HARQ-deterministic information ACK, a feedback type of HARQ-ACK corresponding to different CORESET groups, wherein, A and B are positive integers; indicating, by the first parameter, the wireless terminal to use the same precoding for consecutive radio resources corresponding to the same transmission configuration indication (TCI) state in one precoding resource block group (PRG); the first parameter is used by the wireless terminal to determine a second parameter, the second parameter comprising a set of HARQ-ACK bits where HARQ-ACK of the PDSCH is located; wherein, when A is equal to 1, the HARQ-ACK of the PDSCH is contained in one set of HARQ-ACK bits only; when A is greater than 1, the HARQ-ACK of the PDSCH is contained in C sets of HARQ-ACK bits, where C is a positive integer less than or equal to A, or C is a positive integer less than or equal to B.

26. The wireless communication apparatus of claim 25, wherein, the codebook type of the HARQ-ACK comprises a dynamic HARQ-ACK codebook and a semi-static HARQ-ACK codebook; and the feedback type of the HARQ-ACK corresponding to the different CORESET groups comprises at least one of the following: independent HARQ-ACK feedback, joint HARQ-ACK feedback.

27. The wireless communication apparatus of claim 26, wherein, the set of HARQ-ACK bits comprises one of the following: a HARQ-ACK codebook, a HARQ-ACK sub-codebook, wherein one HARQ-ACK codebook comprises at least one HARQ-ACK sub-codebook; or different sets of HARQ-ACK bits correspond to different CORESET groups.

28. The wireless communication apparatus of claim 25, wherein, the TCI state is associated with at least one reference signal and at least one quasi co-location (QCL) type.

29. The wireless communication apparatus of claim 28, wherein, the at least one QCL type belongs to at least one of a set of at least four QCL types distinguished according to different types of large-scale information.

30. The wireless communication apparatus of claim 25, wherein, the first parameter further comprises a number E of configured values of the same type of parameter in a first frequency domain bandwidth and a number F of CORESET groups in a second frequency domain bandwidth, where E and F are positive integers; the second parameter further comprises at least one of the following: a correspondence between the CORESET groups and the same type of parameter, a CORESET group scheduling the first frequency domain bandwidth; the same type of parameter is a parameter of a channel and / or a signal; and the first frequency domain bandwidth and the second frequency domain bandwidth are the same frequency domain bandwidth or different frequency domain bandwidths, and a channel and / or a signal in the first frequency domain bandwidth is scheduled by a control channel in the second frequency domain bandwidth.

31. A computer readable storage medium, the storage medium having stored therein a computer program, the computer program, when executed by a processor, implementing the method of any one of claims 1 to 15.

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