Method for uplink transmission associated with antenna port and panel switching

Abstract

The present invention discloses a wireless communication method for a wireless terminal. The wireless communication method includes: determining at least one transmission state of an uplink channel, wherein at least one of a spatial relationship or an antenna port of the uplink channel is determined based on a first transmission state of the at least one transmission state; and transmitting the uplink channel to a wireless network node.

Description

Technical Field

[0001] This document relates generally to wireless communications. Background Art

[0002] When using wide or ultra-wide spectrum resources, the considerable propagation losses caused by the extremely high frequencies become a significant challenge. To address this challenge, antenna arrays and beamforming training techniques are used to achieve beam calibration and obtain sufficiently high antenna gain, which use large-scale multiple-input multiple-output (MIMO) technology (for example, up to 1024 antenna elements for one node). In order to maintain a low implementation cost while continuing to reap the benefits of such large antenna arrays, analog phase shifters become an attractive option for implementing mmWave beamforming. That is, the number of controllable phases is limited, and constant modulus constraints are imposed on these antenna elements to reduce the cost of implementing the antenna array. Assuming multiple pre-specified beam patterns, the purpose of beamforming training based on variable phase shifts is to identify the optimal pattern for subsequent data transmission, usually in the case of one TRP (transmit (Tx) receive (Rx) point) and one panel. Figure 1 A schematic diagram showing the case of one TRP and one panel. Figure 1 , a TRP and a user equipment (UE) with one panel perform beam-based uplink / downlink (UL / DL) transmission, where the beams with solid lines represent selected Tx / Rx beams for UL / DL transmission.

[0003] In order to improve UL transmission performance (especially considering UE blocking and maximum permissible exposure (MPE)), multi-panel UL transmission can be considered in beyond 5G networks and subsequent evolutions. For example, there can be up to two TRPs, and each TRP has one or more TRP panels. At the same time, on the UE side, there can be multiple UE panels, and some of these UE panels can be used for transmission. At a given time, it is assumed that only one panel can be used for UL transmission. In other words, fast panel switching can be achieved.

[0004] Figure 2A and Figure 2B Two typical cases are shown: intra-panel antenna switching and inter-panel antenna switching. More specifically, Figure 2A The figure shows the antenna switching inside the panel. Figure 2A In the example, different UE antenna ports (i.e., Figure 2A The transmission of the sounding reference signal (SRS) of the UE antenna port a and the UE antenna port b) shown in FIG can share the same UL power control parameters and the same spatial relationship. For example, the UE antenna port a and the UE antenna port b can both correspond to positive / negative polarization.

[0005] Figure 2B The switching of antennas between panels is shown. Figure 2B In the different UE antenna ports / panels (i.e., Figure 2B The SRS transmissions of UE panel 1 and UE panel 2 or UE antenna port 1 and UE antenna port 2 (shown in FIG) may correspond to different UL power control parameters and different spatial relationships / beams, since each UE antenna port / panel may experience a different physical channel.

[0006] Furthermore, there may be different requirements for the time domain protection period for intra-panel and inter-panel switching, depending on the implementation / capability of the UE. Summary of the Invention

[0007] This document relates to methods, systems, and devices for uplink transmission associated with antenna port and / or panel switching.

[0008] The present disclosure relates to a wireless communication method for a wireless terminal. The wireless communication method includes:

[0009] determining at least one transmission state of an uplink channel, wherein at least one of a spatial relationship or an antenna port of the uplink channel is determined based on a first transmission state of the at least one transmission state; and

[0010] Transmit uplink channels to wireless network nodes.

[0011] Various embodiments may preferably implement the following features:

[0012] Preferably, one transmission state of the at least one transmission state is associated with one or more reference signals.

[0013] Preferably, at least one of the spatial relationship of the uplink channels or the antenna ports is determined based on one reference signal of one or more reference signals associated with the first transmission state.

[0014] Preferably, at least one transmission state is associated with one or more reference signals, and the wireless communication method further includes: determining at least one reference signal among the one or more reference signals associated with the first transmission state of the uplink channel, wherein the spatial relationship of the uplink channel or at least one of the antenna ports is also determined based on one of the at least one reference signal determined.

[0015] Preferably, at least one transmission state is associated with one or more downlink reference signals, and the path loss reference signal is determined based on at least one downlink reference signal of the one or more downlink reference signals.

[0016] Preferably, at least one downlink reference signal among the one or more downlink reference signals is associated with at least one spatial parameter.

[0017] Preferably, at least one downlink reference signal among the one or more downlink reference signals corresponds to at least one of the following: a downlink reference signal resource with a lowest or highest resource identifier in at least one transmission state, or a downlink reference signal resource as the first entry in at least one transmission state.

[0018] Preferably, the path loss estimate is determined based on an average of one or more path loss estimates corresponding to one or more downlink reference signals.

[0019] Preferably, the one or more reference signals associated with at least one transmission state include at least one of a downlink reference signal resource, a downlink reference signal port, a sounding reference signal (SRS) resource or an SRS port.

[0020] Preferably, one of the at least one transmission state comprises at least one of a transmission configuration indication state or a spatial relationship.

[0021] Preferably, one of the at least one transmission state is associated with at least one panel, at least one SRS resource or at least one SRS port.

[0022] Preferably, the SRS resources in one transmission state in the at least one transmission state are not in the same SRS resource set or are in different SRS resource sets.

[0023] Preferably, the number of SRS resources, SRS ports or downlink reference signal resources in one transmission state of at least one transmission state is less than or equal to the capability or threshold of the wireless terminal.

[0024] Preferably, the SRS resources or SRS ports in one transmission state in the at least one transmission state have different indexes or do not have the same index.

[0025] Preferably, the SRS resources or SRS ports in one transmission state in the at least one transmission state have the same index or do not have different indexes.

[0026] Preferably, the wireless communication method further includes: receiving a command from a wireless network node, the command indicating at least one of a downlink reference signal resource, a downlink reference signal port, a transmission configuration indication state, an SRS resource or an SRS port associated with one of at least one transmission state.

[0027] Preferably, the wireless communication method further includes: receiving downlink control information (DCI) from a wireless network node, the downlink control information indicating a first transmission state among at least one transmission state, wherein the length of at least one field of the transmitted precoding matrix indicator field or the SRS resource indicator field in the DCI is determined based on the maximum number of one of the downlink reference signal resources, downlink reference signal ports, transmission configuration indication states, SRS resources or SRS ports associated with the first transmission state.

[0028] Preferably, the wireless communication method also includes: receiving DCI from a wireless network node, the DCI indicating at least one transmission state, wherein Q spatial relationships, P antenna ports and T antenna port groups of the uplink channel are determined in sequence based on the corresponding transmission state in the at least one transmission state, wherein Q, P and T are positive integers.

[0029] Preferably, the length of at least one of the transmitted precoding matrix indicator field or the SRS resource indicator field in the DCI is determined based on the maximum number of one of the downlink reference signal resources, downlink reference signal ports, transmission configuration indication state, transmission state, SRS resources or SRS ports associated with at least one transmission state.

[0030] Preferably, the wireless communication method further comprises: receiving a precoding matrix indicator transmitted in DCI from the radio network node, the precoding matrix indicator indicating precoding information of at least one antenna port associated with the first transmission state.

[0031] Preferably, the one or more reference signals associated with at least one transmission state include at least one SRS resource, and the SRS resources are grouped into a plurality of SRS resource sets.

[0032] Preferably, at most X SRS resources in Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in N second SRS resource sets in the plurality of SRS resource sets are included in one transmission state in at least one transmission state, where X, Y, M and N are positive integers.

[0033] Preferably, at most X SRS resources in Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in N second SRS resource sets in the plurality of SRS resource sets are transmitted simultaneously, and X, Y, M and N are positive integers.

[0034] Preferably, the Y first SRS resource groups are associated with at least one antenna port shared by multiple transmission chains, and the N second SRS resource groups are associated with at least one antenna port shared by multiple other transmission chains.

[0035] The present disclosure relates to a wireless communication method for a wireless network node. The wireless communication method includes:

[0036] transmitting a first command associated with at least one transmission state to a wireless terminal; and

[0037] Receive uplink channel from wireless terminal,

[0038] At least one of a spatial relationship of an uplink channel or an antenna port is determined based on a first transmission state in the at least one transmission state.

[0039] Various embodiments may preferably implement the following features:

[0040] Preferably, one of the at least one transmission state is associated with one or more reference signals, and at least one of the spatial relationship of the uplink channels or the antenna ports is determined based on one of the one or more reference signals associated with the first transmission state.

[0041] Preferably, at least one transmission state is associated with one or more reference signals, wherein the first command further indicates at least one of the one or more reference signals associated with the first transmission state, and wherein the spatial relationship of the uplink channel or at least one of the antenna ports is further determined based on one of the indicated at least one reference signal.

[0042] Preferably, at least one transmission state is associated with one or more downlink reference signals, and the path loss reference signal is determined based on at least one downlink reference signal of the one or more downlink reference signals.

[0043] Preferably, at least one downlink reference signal among the one or more downlink reference signals is associated with at least one spatial parameter.

[0044] Preferably, at least one downlink reference signal among the one or more downlink reference signals corresponds to at least one of the following: a downlink reference signal resource with a lowest or highest resource identifier in at least one transmission state, or a downlink reference signal resource as the first entry in at least one transmission state.

[0045] Preferably, the path loss estimate is determined based on an average of one or more path loss estimates corresponding to one or more downlink reference signals.

[0046] Preferably, the one or more reference signals associated with at least one transmission state include at least one of a downlink reference signal resource, a downlink reference signal port, a sounding reference signal (SRS) resource or an SRS port.

[0047] Preferably, one of the at least one transmission state comprises at least one of a transmission configuration indication state or a spatial relationship.

[0048] Preferably, one of the at least one transmission state is associated with at least one panel, at least one sounding reference signal (SRS) resource or at least one SRS port.

[0049] Preferably, the SRS resources in one transmission state in the at least one transmission state are not in the same SRS resource set or are in different SRS resource sets.

[0050] Preferably, the number of SRS resources, SRS ports or downlink reference signal resources in one transmission state of at least one transmission state is less than or equal to the capability or threshold of the wireless terminal.

[0051] Preferably, the threshold is predefined.

[0052] Preferably, the threshold is determined based on the capabilities of the wireless terminal.

[0053] Preferably, the SRS resources or SRS ports in one transmission state in the at least one transmission state have different indexes or do not have the same index.

[0054] Preferably, the SRS resources or SRS ports in one transmission state in the at least one transmission state have the same index or do not have different indexes.

[0055] Preferably, the wireless communication method also includes: transmitting a second command to the wireless terminal, the second command indicating at least one of a downlink reference signal resource, a downlink reference signal port, a transmission configuration indication state, an SRS resource or an SRS port associated with one of at least one transmission state.

[0056] Preferably, the wireless communication method also includes: transmitting downlink control information to the wireless terminal, the downlink control information indicating a first transmission state among at least one transmission state, wherein the length of at least one field in the transmitted precoding matrix indicator field or SRS resource indicator field in the downlink control information (DCI) is determined based on the maximum number of downlink reference signal resources, downlink reference signal ports, transmission configuration indication states, SRS resources or SRS ports associated with the first transmission state.

[0057] Preferably, the wireless communication method also includes: transmitting downlink control information to the wireless terminal, the downlink control information indicating at least one transmission state, wherein Q spatial relationships, P antenna ports and T antenna port groups of the uplink channel are determined in sequence based on the corresponding transmission state in the at least one transmission state, wherein Q, P and T are positive integers.

[0058] Preferably, the length of at least one of the transmitted precoding matrix indicator field or the SRS resource indicator field in the downlink control information (DCI) is determined based on the maximum number of one of the downlink reference signal resources, downlink reference signal ports, transmission configuration indication state, transmission state, SRS resources or SRS ports associated with at least one transmission state.

[0059] Preferably, the wireless communication method further comprises: transmitting a transmitted precoding matrix indicator in the downlink control information to the wireless terminal, wherein the precoding matrix indicator indicates precoding information of at least one antenna port associated with the first transmission state.

[0060] Preferably, the one or more reference signals associated with at least one transmission state include at least one SRS resource, and the SRS resources are grouped into a plurality of SRS resource sets.

[0061] Preferably, at most X SRS resources in Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in N second SRS resource sets in the plurality of SRS resource sets are included in one transmission state in at least one transmission state, where X, Y, M and N are positive integers.

[0062] Preferably, at most X SRS resources in Y first SRS resource sets in the multiple SRS resource sets and at most M SRS resources in N second SRS resource sets in the multiple SRS resource sets are transmitted simultaneously, where X, Y, M and N are positive integers.

[0063] Preferably, the Y first SRS resource groups are associated with at least one antenna port shared by multiple transmission chains, and the N second SRS resource groups are associated with at least one antenna port shared by multiple other transmission chains.

[0064] The present disclosure relates to a wireless communication method for a wireless terminal. The wireless communication method includes:

[0065] transmitting an uplink channel to the radio network node in a first transmission mode; and

[0066] After the time gap, transmitting an uplink channel to the radio network node in a second transmission mode,

[0067] Each of the first transmission mode and the second transmission mode is determined based on at least one of a panel, a transmission state, or a number of antenna ports.

[0068] Various embodiments may preferably implement the following features:

[0069] Preferably, the wireless communication method further comprises: not performing uplink transmission during the time gap.

[0070] Preferably, the first transmission mode and the second transmission mode are associated with at least one of different panels, different transmission states, different numbers of antenna ports or numbers of panels.

[0071] Preferably, the first transmission mode and the second transmission mode indicate the number of antenna ports used for transmitting uplink channels.

[0072] Preferably, the first transmission mode and the second transmission mode are configured by the radio network node.

[0073] Preferably, at least one of the duration of the time gap, the maximum number of antenna ports, or the maximum number of antenna ports in a single transmission state is determined based on a capability or a threshold of the wireless terminal.

[0074] Preferably, the threshold is predefined.

[0075] Preferably, the threshold is determined based on the capabilities of the wireless terminal.

[0076] The present disclosure relates to a wireless communication method for a wireless terminal. The wireless communication method includes:

[0077] transmitting an uplink channel to the radio network node in a first transmission mode within the time unit; and

[0078] Stop transmitting the uplink channel in the second transmission mode in the time interval after the time unit.

[0079] Each of the first transmission mode and the second transmission mode is determined based on at least one of a panel, a transmission state, or a number of antenna ports.

[0080] Various embodiments may preferably implement the following features:

[0081] Preferably, the first transmission mode and the second transmission mode are associated with at least one of different panels, different transmission states, different numbers of antenna ports or numbers of panels.

[0082] Preferably, the first transmission mode and the second transmission mode indicate the number of antenna ports used for transmitting uplink channels.

[0083] Preferably, the first transmission mode and the second transmission mode are configured by the radio network node.

[0084] Preferably, at least one of the duration of the time gap, the maximum number of antenna ports, or the maximum number of antenna ports in a single transmission state is determined based on a capability or a threshold of the wireless terminal.

[0085] Preferably, the threshold is predefined.

[0086] Preferably, the threshold is determined based on the capabilities of the wireless terminal.

[0087] The present disclosure relates to a wireless communication method for a wireless network node. The wireless communication method includes:

[0088] receiving an uplink channel from a wireless terminal in a first transmission mode; and

[0089] receiving an uplink channel from the wireless terminal in a second transmission mode after the time gap,

[0090] Each of the first transmission mode and the second transmission mode is determined based on at least one of a panel, a transmission state, or a number of antenna ports.

[0091] Various embodiments may preferably implement the following features:

[0092] Preferably, the first transmission mode and the second transmission mode are associated with at least one of different panels, different transmission states, different numbers of antenna ports or numbers of panels.

[0093] Preferably, the first transmission mode and the second transmission mode indicate the number of antenna ports used for transmitting uplink channels.

[0094] Preferably, the wireless communication method further comprises: transmitting the configuration of the first transmission mode and the second transmission mode to the wireless terminal.

[0095] Preferably, at least one of the duration of the time gap, the maximum number of antenna ports, or the maximum number of antenna ports in a single transmission state is determined based on a capability or a threshold of the wireless terminal.

[0096] Preferably, the threshold is predefined.

[0097] Preferably, the threshold is determined based on the capabilities of the wireless terminal.

[0098] The present disclosure relates to a wireless terminal, comprising:

[0099] a communication unit configured to determine at least one transmission state of an uplink channel, wherein at least one of a spatial relationship or an antenna port of the uplink channel is determined based on a first transmission state of the at least one transmission state; and

[0100] The processor is configured to transmit an uplink channel to a wireless network node.

[0101] Various embodiments may preferably implement the following features:

[0102] Preferably, the processor is configured to execute the wireless communication method described in any one of the aforementioned methods.

[0103] The present disclosure relates to a wireless network node, comprising: a communication unit configured to:

[0104] transmitting a first command associated with at least one transmission state to a wireless terminal; and

[0105] Receive uplink channel from wireless terminal,

[0106] At least one of a spatial relationship of an uplink channel or an antenna port is determined based on a first transmission state in the at least one transmission state.

[0107] Various embodiments may preferably implement the following features:

[0108] Preferably, the wireless network node further includes: a processor configured to execute any one of the wireless communication methods described above.

[0109] The present disclosure relates to a wireless terminal, comprising: a communication unit configured to:

[0110] transmitting an uplink channel to the radio network node in a first transmission mode; and

[0111] After the time gap, transmitting an uplink channel to the radio network node in a second transmission mode,

[0112] Each of the first transmission mode and the second transmission mode is determined based on at least one of a panel, a transmission state, or a number of antenna ports.

[0113] Various embodiments may preferably implement the following features:

[0114] Preferably, the wireless terminal further includes: a processor configured to execute any one of the wireless communication methods described above.

[0115] The present disclosure relates to a wireless terminal, comprising:

[0116] a communication unit configured to transmit an uplink channel to a radio network node in a first transmission mode within a time unit; and

[0117] The processor is configured to stop transmitting the uplink channel in the second transmission mode within a time interval after the time unit,

[0118] Each of the first transmission mode and the second transmission mode is determined based on at least one of a panel, a transmission state, or a number of antenna ports.

[0119] Various embodiments may preferably implement the following features:

[0120] Preferably, the processor is further configured to execute the wireless communication method described in any one of the aforementioned methods.

[0121] The present disclosure relates to a wireless network node, comprising:

[0122] Communication unit, configured as:

[0123] receiving an uplink channel from a wireless terminal in a first transmission mode; and

[0124] receiving an uplink channel from the wireless terminal in a second transmission mode after the time gap,

[0125] Each of the first transmission mode and the second transmission mode is determined based on at least one of a panel, a transmission state, or a number of antenna ports.

[0126] Various embodiments may preferably implement the following features:

[0127] Preferably, the wireless network node further includes: a processor configured to execute any one of the wireless communication methods described above.

[0128] The present disclosure relates to a computer program product, comprising computer-readable program medium codes stored thereon, which, when executed by a processor, causes the processor to implement any one of the wireless communication methods described above.

[0129] The exemplary embodiments disclosed herein are intended to provide features that will become apparent by reference to the following description in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these embodiments are presented by way of example and not limitation, and that various modifications to the disclosed embodiments will be apparent to those skilled in the art after reading this disclosure without departing from the scope of this disclosure.

[0130] Therefore, the present disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. Furthermore, the specific order and / or hierarchy of steps in the methods disclosed herein are merely exemplary. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes may be rearranged without departing from the scope of the present disclosure. Therefore, it will be understood by those of ordinary skill in the art that the methods and techniques disclosed herein present various steps or actions in an example order, and that the present disclosure is not limited to the specific order or hierarchy presented, unless expressly stated otherwise.

[0131] The above and other aspects and implementations thereof are described in more detail in the drawings, the description, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0132] Figure 1 A schematic diagram showing the case of one TRP and one panel;

[0133] Figure 2A The switching of antennas within the panel is shown;

[0134] Figure 2B The switching of antennas between panels is shown;

[0135] Figure 3 An example of a schematic diagram of a wireless terminal according to an embodiment of the present disclosure is shown;

[0136] Figure 4 An example of a schematic diagram of a wireless network node according to an embodiment of the present disclosure is shown;

[0137] Figure 5 A schematic diagram of a user equipment with two transmit chains and four receive chains according to an embodiment of the present disclosure is shown;

[0138] Figure 6 A schematic diagram of a user equipment with two transmit chains and four receive chains according to an embodiment of the present disclosure is shown;

[0139] Figure 7 A schematic diagram of a user equipment with two transmit chains and four receive chains according to an embodiment of the present disclosure is shown;

[0140] Figure 8 A schematic diagram showing a user equipment supporting intra-panel switching according to an embodiment of the present disclosure is shown;

[0141] Figure 9 A schematic diagram showing a user equipment supporting inter-panel switching according to an embodiment of the present disclosure is shown;

[0142] Figure 10 A schematic diagram of a user equipment with 4 transmit chains and 6 receive chains according to an embodiment of the present disclosure is shown;

[0143] Figure 11 A flowchart illustrating a process according to an embodiment of the present disclosure is shown;

[0144] Figure 12 A flowchart illustrating a process according to an embodiment of the present disclosure is shown;

[0145] Figure 13 A flowchart illustrating a process according to an embodiment of the present disclosure is shown;

[0146] Figure 14 A flowchart illustrating a process according to an embodiment of the present disclosure is shown;

[0147] Figure 15 A flow chart illustrating a process according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0148] In 5G New Radio (NR), analog beamforming was first introduced into mobile communications to ensure robustness in high-frequency communications. The corresponding analog beamforming instructions (also called beam indications) involve downlink (DL) and uplink (UL) transmissions. For UL transmissions, spatial relationship information (e.g., the higher-layer parameter spatialRelationInfo) has been introduced to support beam indication for UL control channels (i.e., physical uplink control channel (PUCCH) and sounding reference signal (SRS)). In addition, beam indication for UL data channels (i.e., physical uplink shared channel (PUSCH)) is achieved by mapping one or more SRS resources indicated by the gNB to the antenna ports of the UL data channel. Under these conditions, the beam configuration of the UL data channel can be derived from the spatial relationship information association and / or mapping information between the SRS resources and the antenna ports of the UL data channel.

[0149] From a specification perspective, current 5G NR solutions are based on a scenario where there is only a single panel on the UE side, which means that at a given moment, only one DL Tx beam can be received or only one UL Tx beam can be transmitted. In other words, if the UE has multiple panels, whether the panel is activated or deactivated depends entirely on the implementation on the UE side.

[0150] In addition, UE antenna switching is typically used to achieve DL channel state information (CSI) acquisition by transmitting SRS in the UL channel based on channel reciprocity. Current UE antenna switching is also used for the single active panel case in NR, and the SRS resources used for UE antenna switching can have the same spatial relationship, that is, based on only one UL beam and one UE panel.

[0151] For UL data transmission, there can be a single or multiple active UL panels at a given moment. In the present disclosure, dedicated SRS transmission (using codebook or non-codebook transmission) is not used. Instead, UL data transmission can be determined based on the SRS or DL ​​RS of antenna switching to save the overhead of SRS transmission and reduce the delay of beam / panel switching.

[0152] More specifically, for UL data transmission, the corresponding port parameters, number of layers, and precoding information (e.g., spatial relationship or transmit precoding matrix indication (TPMI)) can be clearly indicated. If SRS for other purposes (not SRS for codebook or non-codebook transmission) or DL ​​RS can be used for UL data transmission, the port combination of some candidate SRS ports or the port association with one or more DL RSs should be fully considered.

[0153] In order to achieve dynamic panel switching, it is possible to consider a combination of candidate panels (e.g. Figure 2B1, 2, and 2). Specifically, a single transmission mode includes the following aspects: the definition of the transmission mode (involving the number of Tx chains or candidate antenna ports for a given transmission mode), the mapping between the transmission mode and the UL resources, and the transmission gap requirements for switching between transmission modes.

[0154] In addition to symmetric architectures, this disclosure also introduces heterogeneous antenna and panel architectures to consider a variety of applicable scenarios in NR. Therefore, in this case, it may be necessary to reconsider the additional standards for SRS and / or DL ​​RS indicating UL data transmission. For example, one UL panel of the UE can be associated with its own Tx chain, and the other two UL panels of the UE can share the same Tx chain via panel switching.

[0155] In this disclosure, the definition of "transmission state" can be equivalent to quasi-co-location (QCL) state, transmission configuration indication (TCI) state, spatial relationship (also known as spatial relationship information), reference signal (RS), spatial filter, or precoding. Moreover, in this disclosure, "transmission state" is also referred to as "beam", "transmission state codepoint", or "TCI codepoint".

[0156] In the present disclosure, the definition of "transmission state ID" is equivalent to QCL state index, TCI state index, spatial relationship index, reference signal index, spatial filter index or precoding index.

[0157] In the present disclosure, RS includes a channel state information reference signal (CSI-RS), a synchronization signal block (SSB) (also known as SS / PBCH (synchronization signal / physical broadcast channel)), a demodulation reference signal (DMRS), a sounding reference signal (SRS) or a physical random access channel (PRACH).

[0158] In the present disclosure, a spatial filter may be a spatial filter for a UE side or a gNB side, and a spatial filter is also referred to as a spatial domain filter.

[0159] In the present disclosure, "spatial relationship information" consists of one or more RSs, which is used to indicate the same or quasi-common "spatial relationship" between a target "RS or channel" and the one or more RSs.

[0160] In this disclosure, "spatial relationship" may refer to a beam, a spatial parameter, or a spatial domain filter.

[0161] In the present disclosure, a "QCL state" consists of one or more reference RSs and their corresponding QCL type parameters, where the QCL type parameters include at least one of the following aspects or combinations: [1] Doppler spread, [2] Doppler frequency shift, [3] delay spread, [4] average delay, [5] average gain, and [6] spatial parameters (also called spatial Rx parameters). In the present disclosure, a "TCI state" is equivalent to a "QCL state". In the present disclosure, the definitions of 'QCL-TypeA', 'QCL-TypeB', 'QCL-TypeC', and 'QCL-TypeD' are as follows.

[0162] -'QCL-TypeA': {Doppler shift, Doppler spread, average delay, delay spread}

[0163] -'QCL-TypeB': {Doppler shift, Doppler spread}

[0164] -'QCL-TypeC':{Doppler shift, average delay}

[0165] -'QCL-TypeD': {Spatial Rx parameters}

[0166] In the present disclosure, an “uplink channel” (UL channel) may be a physical UL control channel (PUCCH), a physical UL shared channel (PUSCH), or a physical random access channel (PRACH).

[0167] In the present disclosure, a "downlink reference signal" (DL RS) may be an SSB, a DMRS, or a CSI-RS.

[0168] In this disclosure, a "panel" is equivalent to an antenna group, an antenna port group, a beam group, a subarray, a UE panel, a transmission entity / unit, or a reception entity / unit.

[0169] In the present disclosure, panel switching is equivalent to antenna group switching.

[0170] In the present disclosure, a "time unit" may be a sub-symbol, a symbol, a time slot, a sub-frame, a frame, a monitoring opportunity, or a transmission opportunity.

[0171] In the present disclosure, "power control parameters" include target power (also referred to as P0), path loss RS, a scaling factor of the path loss (also referred to as α), or a closed-loop process.

[0172] In the present disclosure, “path loss” may be coupling loss.

[0173] In the present disclosure, “antenna switching” may be a “sounding process for DL ​​CSI acquisition”.

[0174] In this disclosure, "at least one" may be equivalent to "one or more" and vice versa.

[0175] Figure 3 A schematic diagram of a wireless terminal 30 according to an embodiment of the present disclosure is provided. The wireless terminal 30 may be a user equipment (UE), a mobile phone, a laptop computer, a tablet computer, an e-book, or a portable computer system, and is not limited herein. The wireless terminal 30 may include a processor 300 (such as a microprocessor or an application-specific integrated circuit (ASIC)), a storage unit 310, and a communication unit 320. The storage unit 310 may be any data storage device that stores program code 312 accessed and executed by the processor 300. Examples of the storage unit 312 include, but are not limited to, a subscriber identity module (SIM), a read-only memory (ROM), a flash memory, a random access memory (RAM), a hard disk, and an optical data storage device. The communication unit 320 may be a transceiver and is configured to send and receive signals (e.g., messages or data packets) based on processing results of the processor 300. In one embodiment, the communication unit 320 sends and receives signals via at least one antenna 322 shown in FIG.

[0176] In one embodiment, the storage unit 310 and the program code 312 may be omitted, and the processor 300 may include a storage unit storing the program code.

[0177] For example, by executing the program code 312 , the processor 300 may implement any one of the steps of the exemplary embodiments on the wireless terminal 30 .

[0178] The communication unit 320 may be a transceiver. Alternatively or additionally, the communication unit 320 may be configured in combination as a transmitting unit and a receiving unit for transmitting and receiving signals to and from a wireless network node (eg, a base station), respectively.

[0179] Figure 4A schematic diagram of a radio network node 40 according to an embodiment of the present disclosure is provided. The radio network node 40 may be a satellite, a base station (BS), a network entity, a mobility management entity (MME), a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), a radio access network (RAN), a next generation RAN (NG-RAN), a data network, a core network, or a radio network controller (RNC), and is not limited herein. Furthermore, the radio network node 40 may include (or execute) at least one network function, such as an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), an application function (AF), and the like. The radio network node 40 may include a processor 400 (such as a microprocessor or an ASIC), a memory unit 410, and a communication unit 420. The memory unit 410 may be any data storage device that stores program code 412 accessed and executed by the processor 400. Examples of the memory unit 412 include, but are not limited to, a SIM card, a ROM, a flash memory, a RAM, a hard disk, and an optical data storage device. The communication unit 420 may be a transceiver and is used to send and receive signals (eg, messages or data packets) according to the processing results of the processor 400. In one embodiment, the communication unit 420 is configured to receive and send signals (eg, messages or data packets) according to the processing results of the processor 400. Figure 4 At least one antenna 422 is shown for transmitting and receiving signals.

[0180] In one embodiment, the storage unit 410 and the program code 412 may be omitted. The processor 400 may include a storage unit storing program code.

[0181] For example, by executing the program code 412 , the processor 400 may implement any of the steps described in the exemplary embodiments on the radio network node 40 .

[0182] The communication unit 420 may be a transceiver. Alternatively or additionally, the communication unit 420 may be configured in combination as a transmitting unit and a receiving unit for transmitting and receiving signals to and from a wireless terminal (eg, a user equipment), respectively.

[0183] In the following, various embodiments related to beam configuration of a UL data channel (eg, UL transmission) are illustrated. It should be appreciated by those skilled in the art that these embodiments may be implemented individually or in any possible combination.

[0184] Example 1: Unified framework for indicating PUSCH ports and spatial relationships using DL RS and SRS

[0185] In one embodiment, port parameters and / or spatial relationships may be specified as necessary transmission parameters for UL transmission (e.g., PUSCH transmission). To unify DL and UL transmissions, PUSCH transmission may be indicated by a unified transmission state including only DL RS or UL RS. In one embodiment, DL RS includes CSI-RS and / or SSB. In one embodiment, UL RS includes SRS. The following examples illustrate further details.

[0186] Case 1: PUSCH transmission is indicated using at least one transmission state, each transmission state being associated with at least one DL RS resource or at least one TCI state. In this embodiment, each of the at least one DL RS resource or at least one TCI state is associated with a single PUSCH port and / or spatial relationship. Furthermore, the PUSCH transmission has P antenna ports (e.g., P = 2), each antenna port being sequentially determined based on a corresponding transmission state in at least one transmission state (e.g., having P = 2 corresponding transmission states), where P is a positive integer. For example, when P = 2, with respect to spatial relationship or reference antenna port determination, the first antenna port of the PUSCH transmission is determined based on a first transmission state, and the second antenna port is determined based on a second transmission state. Furthermore, the PUSCH transmission has T antenna port groups (e.g., when T = 2, the first antenna port group has two ports and the second antenna port group has one port), each antenna port group being sequentially determined based on a corresponding transmission state in at least one transmission state (e.g., having T = 2 transmission states), where T is a positive integer.

[0187] In one embodiment, the power control parameter may be associated with the transmission state.

[0188] In one embodiment, the path loss RS is determined based on a DL RS associated with at least one transmission state. For example, the DL RS may be associated with a QCL Type-D parameter (i.e., a spatial Rx parameter). Alternatively or additionally, when there is more than one DL RS associated with a QCL Type-D parameter in a transmission state, the DL RS with the lowest RS resource ID or the first entry associated with the transmission state shall be used to determine the path loss of the PUSCH. Alternatively or additionally, when there is more than one DL RS in a transmission state, an average value of the path losses obtained based on the more than one DL RS (i.e., the path loss estimates corresponding to the more than one DL RS) shall be used to determine the path loss of the PUSCH.

[0189] Case 2: PUSCH transmission is indicated using a transmission state associated with at least one SRS resource and / or at least one SRS port, wherein each SRS resource in the at least one SRS resource or each SRS port in the at least one SRS port may be configured with a different spatial relationship.

[0190] Case 3: PUSCH transmission can be determined based on a transmission state and an SRS resource indicator (SRI) codepoint. In this embodiment, the transmission state corresponds to at least one SRS resource. Alternatively or additionally, the SRI codepoint is used to group / indicate one or more SRS resources corresponding to the transmission state of the PUSCH transmission.

[0191] Example 2: PUSCH port combination rules and corresponding commands

[0192] In one embodiment, to support high mobility scenarios (e.g., UEs with high mobility), port parameters and corresponding spatial relationship information may be combined into a transmission state (also referred to as a transmission state codepoint), which is dynamically indicated for subsequent transmissions. In one embodiment, the rules for combining the port parameters and corresponding spatial relationship information in the transmission state may need to take into account the UE's antenna switching method (e.g., intra-panel switching, partial inter-panel switching, or full inter-panel switching).

[0193] Figure 5 FIG2 shows a schematic diagram of a UE with 2 Tx chains and 4 Rx chains (2T4R) according to an embodiment of the present disclosure. Figure 5 In this embodiment, the UE employs intra-panel switching for UL transmission. More specifically, the UE has two antenna panels (i.e., UE panel 1 and UE panel 2), and each antenna panel has one Tx chain (i.e., Tx chain 1 or Tx chain 2), two Rx chains (i.e., Rx chain 1a and Rx chain 1b or Rx chain 2a and Rx chain 2b), and two subarrays (e.g., UE antenna ports) (i.e., subarray 1a and subarray 1b or subarray 2a and subarray 2b). In this embodiment, Tx chain 1 switches to connect to subarray 1a or subarray 1b located in the same UE panel 1. Similarly, Tx chain 2 switches to connect to subarray 2a or subarray 2b located in the same UE panel 2.

[0194] Figure 6 FIG. 1 shows a schematic diagram of a UE with 2T4R according to an embodiment of the present disclosure. Figure 6In this embodiment, the UE uses partial inter-panel switching for UL transmission. Specifically, the UE has two antenna panels (i.e., UE panel 1 and UE panel 2), two Tx chains (i.e., Tx chain 1 and Tx chain 2), and four Rx chains (i.e., Rx chain 1a, Rx chain 1b, Rx chain 2a, and Rx chain 2b), where each antenna panel has two subarrays (UE antenna ports) (i.e., subarray 1a and subarray 1b or subarray 2a and subarray 2b). In this embodiment, Tx chain 1 switches to connect subarray 1a or subarray 2b located in UE panel 1 and UE panel 2, respectively. Similarly, Tx chain 2 switches to connect subarray 1b or subarray 2b located in UE panel 1 and UE panel 2, respectively.

[0195] Figure 7 FIG. 1 shows a schematic diagram of a UE with 2T4R according to an embodiment of the present disclosure. Figure 7 In this embodiment, the UE adopts full inter-panel switching for UL transmission. In detail, the UE has 2 antenna panels (i.e., UE panel 1 and UE panel 2), 2 Tx chains (i.e., Tx chain 1 and Tx chain 2), and 4 Rx chains (i.e., Rx chain 1a, Rx chain 1b, Rx chain 2a, and Rx chain 2b), where each antenna panel has 2 subarrays (UE antenna ports) (i.e., subarray 1a and subarray 1b or subarray 2a and subarray 2b). In this embodiment, Tx chain 1 switches to connect to one of subarrays 1a, subarray 1b, subarray 2a, and subarray 2b. That is, Tx chain 1 can be connected to any subarray of the UE. Similarly, Tx chain 2 switches to connect to one of subarrays 1a, subarray 1b, subarray 2a, and subarray 2b.

[0196] In the following, some rules for combining port parameters and corresponding spatial relationship information in the transmission state are shown. In one embodiment, for PUSCH port combination, at least one of the following rules is considered.

[0197] In one embodiment, the SRS resources in the SRS resource set cannot be combined in a single transmission state. For example, when the UE structure adopts intra-panel switching, the SRS resources in the same SRS resource set cannot be combined in a single transmission state. Figure 5 In an embodiment of the present invention, a beam X corresponding to the subarray 1a and another beam X corresponding to the subarray 1b may be in one SRS resource set and cannot be combined in the same transmission state.

[0198] In one embodiment, SRS resources from different SRS resource sets may be combined in one transmission state. For example, when the UE structure adopts intra-panel switching, SRS resources from different SRS resource sets may be combined in one transmission state. Figure 5 In one embodiment, beam X corresponding to subarray 1a and beam Y corresponding to subarray 2a may be in different SRS resource sets and may be combined in one transmission state.

[0199] In one embodiment, the number of SRS ports and / or SRS resources and / or DL ​​RS resources combined in a single transmission state cannot exceed the UE capability or threshold. For example, when the UE structure adopts inter-panel handover (e.g., full inter-panel handover), the number of SRS ports and / or SRS resources and / or DL ​​RS resources included in a single transmission state cannot exceed the UE capability or threshold.

[0200] In one embodiment, the threshold is predefined.

[0201] In one embodiment, the threshold is determined based on UE capabilities.

[0202] In one embodiment, SRS resources with different indices can be combined in one transmission state. In other words, different SRS resources with the same index (e.g., from different SRS resource sets) cannot be combined in one transmission state. For example, when the UE structure adopts inter-panel switching (e.g., partial inter-panel switching), SRS resources with different indices can be combined in one transmission state. Figure 6 In one embodiment, SRS resource 0 corresponding to subarray 1a and SRS resource 1 corresponding to subarray 1b can be combined in SRS resource set 0, and SRS resource 0 corresponding to subarray 2a and SRS resource 2 corresponding to subarray 2b can be combined in another SRS resource set 1. Under these conditions, SRS resource 0 corresponding to subarray 1a and SRS resource 0 corresponding to subarray 2a (i.e., SRS resources with the same index) cannot be combined into one transmission state. Similarly, SRS resource 1 corresponding to subarray 1b and SRS resource 1 corresponding to subarray 2b cannot be combined into one transmission state. In other words, SRS resources with different indices (e.g., SRS resource 0 corresponding to subarray 1a and SRS resource 1 corresponding to subarray 1b) can be combined into one transmission state.

[0203] In one embodiment, SRS resources with the same index can be combined in one transmission state. In other words, different SRS resources with different indexes (e.g., from different SRS resource sets) cannot be combined in one transmission state. Figure 6The only difference is that SRS resource 0 corresponding to subarray 2b and SRS resource 1 corresponding to subarray 2a are combined in another SRS resource set 1. Therefore, under these conditions, SRS resource 0 corresponding to subarray 1a and SRS resource 1 corresponding to subarray 2a (i.e., SRS resources with different indices) cannot be combined into a single transmission state. Similarly, SRS resource 1 corresponding to subarray 1b and SRS resource 0 corresponding to subarray 2b cannot be combined into a single transmission state. In other words, SRS resources with the same index (e.g., SRS resource 0 corresponding to subarray 1a and SRS resource 0 corresponding to subarray 1b) can be combined into a single transmission state.

[0204] In one embodiment, at least one DL RS may be combined in one transmission state. In one embodiment, one of the at least one DL RS in the transmission state corresponds to a single PUSCH antenna port. In one embodiment, one of the at least one DL RS corresponds to a PUSCH antenna port and / or an antenna port group.

[0205] In one embodiment, a PUSCH antenna port may be associated with at least one of an SRS resource, an SRS port, and / or a DL RS (i.e., at least one SRS resource and / or at least one SRS port and / or at least one DL RS), as indicated by a transmission state and / or SRI. In one embodiment, at least one DL RS is configured in at least one TCI state, and at least one TCI state is associated with a PUSCH antenna port.

[0206] In one embodiment, the SRS resource may be associated with a transmission state used to determine the spatial relationship. For example, the transmission state applies to PUSCH transmission, and the PUSCH antenna port for the PUSCH transmission is determined based on the SRS resource associated with the transmission state.

[0207] In one embodiment, the SRI code point may be used to indicate the SRS resources available for PUSCH transmission. In other words, the antenna ports of the SRS resources are mapped to the PUSCH antenna ports.

[0208] In one embodiment, the TPMI code point may be used to indicate precoding information of an antenna port corresponding to an SRS resource indicated by the transmission status.

[0209] In one embodiment, a new command (e.g., MAC-CE or RRC signaling) may be introduced to combine candidates for SRS resources and / or SRS ports and / or DL ​​RSs (and / or TCI states) for a transmission state. Various examples of commands for combining candidates for SRS resources and / or SRS ports and / or DL ​​RSs (and / or TCI states) for a transmission state are shown below.

[0210] Example 1: Based on the command of this embodiment, one or more SRS resources and corresponding SRS resource sets are provided for a transmission state. In one embodiment, the command is a MAC-CE command, with two SRS resource sets associated with two independent UE panels (each SRS resource set has two SRS resources), and the following Table I shows the MAC-CE-based combination. In this embodiment, to maintain the overhead of the MAC-CE command, the index of the SRS resource is the local ID in the corresponding SRS resource set. In the embodiment shown in Table I, there are four UE antenna ports (i.e., UE antenna ports 1a / 1b / 2a / 2b), and each UE antenna port corresponds to at least one SRS resource from SRS resource 0 in SRS resource set 0 (i.e., Resource-0_Set-0), SRS resource 1 in SRS resource set 0 (i.e., Resource-1_Set-0), SRS resource 0 in SRS resource set 1 (i.e., Resource-0_Set-1), and SRS resource 1 in SRS resource set 1 (i.e., Resource-1_Set-1). For example, UE antenna ports 1a, 1b, 2a, and 2b may be Figure 5 、 Figure 6 or Figure 7 UE antenna ports shown in . Based on Table 1, transmission state 000 and transmission state 001 (i.e., code points in DL control information (DCI)) are used for single-layer PUSCH transmission. In addition, transmission states 010, 011, 100, and 101 are used for two-layer PUSCH transmission. In one embodiment, the length of the TPMI or SRI field in the DCI is determined based on the maximum number of SRS resources in a single transmission state, for example to support flexible / dynamic indication of single or multiple transmission layers.

[0211] Table I: PUSCH port combination based on SRS resources via MAC-CE command

[0212]

[0213] Example-2: In this embodiment, a combination based on SRS ports is provided. In this embodiment, there are 2 SRS resources in one SRS resource set, and there are two SRS ports for each SRS resource. In one embodiment, the SRS port corresponding to a single SRS resource can be used for UL transmission at the same time. Table II below shows the PUSCH port combination based on SRS ports according to the (MAC-CE) command. In Table II, there are two SRS resources 0 and 1 (i.e., resource-0 and resource-1), two SRS ports 0 and 1 (i.e., port-0 and port-1) for each of the SRS resources 0 and SRS resource 1, and 4 UE antenna ports 1a, 1b, 2a, and 2b (e.g., Figures 5 to 7 Based on Table II, transmission state (i.e., code point in DL control information (DCI)) 000 corresponds to SRS resource 0 with SRS port 0 and UE antenna port 1a, transmission state 001 corresponds to SRS resource 1 with SRS port 0 and UE antenna port 2a, and so on. In one embodiment, the length of the TPMI or SRI field in the DCI is determined based on the maximum number of ports used for a single transmission state to support flexible / dynamic indication of single or multiple transmission layers.

[0214] Table II: PUSCH port combination based on SRS port via MAC-CE command

[0215]

[0216] Example 3: In this embodiment, a combination based on DL-RS / TCI states is provided. More specifically, at least one DL RS / TCI state can be provided for a single transmission state. In the embodiment where at least one TCI state is provided for a single transmission state, a DL RS related to (e.g., associated with) QCL Type-D is used to determine PUSCH transmission. Tables III and IV below show corresponding examples based on DL-RS or TCI states, respectively.

[0217] In the example of Table III, there are two DL RSs (ie, DL RS-0 and DL RS-1) and four UE antenna ports 1a, 1b, 2a, and 2b (eg, Figures 4 to 6 UE antenna port shown in one of the two examples. In this embodiment, a single transmission state is associated with at least one DL RS. For example, transmission state (i.e., code point in DCI) 000 is associated with DL RS-0, transmission state (i.e., code point in DCI) 001 is associated with DL RS-1, and so on.

[0218] Table III: DL RS-based PUSCH port combinations via MAC-CE commands

[0219]

[0220]

[0221] In the example of Table IV, there are two TCI states (ie, TCI state-0 and TCI state-1) and four UE antenna ports 1a, 1b, 2a, and 2b (eg, Figures 4 to 6 (e.g., one of the UE antenna ports shown in FIG. 1 ). In this embodiment, a single transmission state is associated with at least one TCI state. For example, transmission state (i.e., codepoint in DCI) 000 is associated with TCI state-0, transmission state (i.e., codepoint in DCI) 001 is associated with TCI state-1, and so on.

[0222] Table IV: PUSCH port combination based on TCI status via MAC-CE command

[0223]

[0224] Example 3: Detailed criteria for SRS combination in PUSCH transmission

[0225] To reduce preamble overhead, a single SRS resource can be used for multiple purposes, such as for PUSCH codebook transmission, PUSCH non-codebook transmission, and / or antenna switching. In one embodiment, at least one of the following criteria for SRS resources is supported to meet limitations related to UE capabilities.

[0226] In an embodiment of a UE with intra-panel handover (e.g., Figure 5 ), supporting at least one of the following standards:

[0227] A) Different SRS antenna ports or SRS resources and / or SRS resources or SRS resource sets within a single UE panel cannot be transmitted simultaneously;

[0228] B) different SRS antenna ports or SRS resources, SRS resources or SRS resource sets from different panels can be transmitted simultaneously;

[0229] C) The mapping between Tx chain and UE panel is fixed.

[0230] In an embodiment where the UE supports switching between some panels (e.g. Figure 6 ), supporting at least one of the following standards:

[0231] A) different SRS antenna ports or SRS resources can be transmitted simultaneously, regardless of whether they are from the same or different panels, SRS resources or SRS resource sets;

[0232] B) A maximum of N antenna ports or SRS resources can be transmitted simultaneously, where N is a positive integer;

[0233] B-1) Different SRS resources with the same resource index can be transmitted simultaneously;

[0234] B-2) Different SRS resources with different resource indices cannot be transmitted simultaneously;

[0235] B-3) Different SRS ports with the same port index can be transmitted simultaneously;

[0236] B-4) Different SRS ports with different port indices cannot be transmitted simultaneously;

[0237] C) Considering that the mapping between Tx chains and panels is controllable, UEs that support partial inter-panel switching can support dynamic panel-by-panel switching.

[0238] In embodiments where the UE supports full inter-panel handover (e.g., Figure 7 ), supporting at least one of the following standards:

[0239] A) different SRS antenna ports or SRS resources can be transmitted simultaneously, regardless of whether they are from the same or different panels, SRS resources or SRS resource sets;

[0240] B) A maximum of N antenna ports or resources can be transmitted simultaneously (where N is a positive integer);

[0241] C) When considering that the mapping between Tx chains and panels is controllable, UEs that support full inter-panel handover can support dynamic panel-by-panel handover;

[0242] C-1) Simultaneous transmission between different panels / spatial relationships / TCIs ​​can be determined based on UE capabilities.

[0243] Example 4: Transmission mode for UE fast panel switching

[0244] When the UE panel switches from idle mode to active mode, there is an additional delay (e.g., about 3ms). During this switching period, the UE cannot perform any UL transmissions due to the uncertainty of the physical circuit. Therefore, it may be necessary to specify a transmission gap to stop all UL transmissions.

[0245] In one embodiment, when the UE performs UL transmission in the first transmission mode and there is a previous UL transmission corresponding to the second transmission mode, the UE is not required to transmit during the duration of the time gap. In addition, the UE may not perform any UL or DL ​​transmission during the duration of the time gap.

[0246] In one embodiment, the transmission mode is determined according to at least one of a panel, a transmission state, and a number of antenna ports.

[0247] In one embodiment, the first transmission mode and the second transmission mode are distinguished by at least one of a panel, a transmission state, the number of antenna ports, and the number of panels.

[0248] In one embodiment, the number or maximum number of ports corresponding to a single transmission state is determined according to the transmission mode.

[0249] In one embodiment, the transmission mode may be configured by the network.

[0250] In one embodiment, the duration of the time gap, the maximum number of ports in an UL transmission, and the maximum number of ports used in a transmission state are determined based on UE capabilities or a specific value. In an embodiment where multiple transmission states are used for UL transmission, the maximum number of ports used in a single transmission state is determined based on UE capabilities or a specific value. In an embodiment where a single transmission state is used for a single UL transmission, the maximum number of ports used in a transmission state is determined based on UE capabilities or a specific value.

[0251] In one embodiment, at least one of the following transmission modes may be provided for a UE supporting intra-panel handover. In this embodiment, a UE supporting intra-panel handover may support two panels, such as Figure 8 As shown. Figure 8 In the embodiment, the UE has 2T4R (i.e., 2 Tx chains 0 and 1 and 4 Rx chains 1a, 1b, 2a and 2b) and 2 panels (i.e., UE panel 1 and UE panel 2), where each panel has 1 Tx chain, 2 Rx chains and 2 subarrays (e.g., subarray 1a and subarray 1b or subarray 2a and subarray 2b).

[0252] Mode 1: Two panels or two transmission states

[0253] In one embodiment of Mode 1, single-port transmission corresponds to one of two panel / transmission states.

[0254] Mode 2: One panel or one transport state

[0255] In one embodiment of Mode 2, at most one port transmission is supported.

[0256] Mode 3: Another panel or another transmission state

[0257] In one embodiment of Mode 3, at most one port transmission is supported.

[0258] In an embodiment, the number of Tx chains and the number of antenna ports for UL transmission in Modes 1, 2, and 3 can be found in Table V below.

[0259] Table V: Candidate modes in intra-panel switching for UL transmission

[0260]

[0261] In one embodiment, at least one of the following transmission modes may be provided for a UE that supports inter-panel switching (e.g., partial inter-panel switching). In this embodiment, a UE that supports inter-panel switching may support two panels, such as Figure 9 As shown. Figure 9 In the embodiment, the UE has 2T4R (i.e., 2 Tx chains 0 and 1 and 4 Rx chains 1a, 1b, 2a and 2b) and 2 panels (i.e., UE panel 1 and UE panel 2), where each panel has 2 subarrays (e.g., subarray 1a and subarray 1b or subarray 2a and subarray 2b).

[0262] Mode 1: Two panels or two transmission states

[0263] In one embodiment of Mode 1, single-port transmission corresponds to one of two panel / transmission states.

[0264] Mode 2: One panel or one transport state

[0265] In one embodiment of Mode 2, a maximum of two port transmissions are supported.

[0266] Mode 3: Another panel or another transmission state

[0267] In one embodiment of Mode 3, a maximum of two port transmissions are supported.

[0268] In one embodiment, the number of Tx chains and the number of antenna ports used for UL transmission in these three transmission modes can be summarized in Table VI.

[0269] Table VI: Candidate transmission modes in UE for inter-panel handover of UL transmission

[0270]

[0271] Example 5: Additional rules for heterogeneous UE panel structure

[0272] In one embodiment, the UE complexity of panel switching can be simplified to partial UE panel switching, which can be regarded as a special case of inter-panel switching for UL transmission. In this embodiment, 4T6R UE antenna switching is considered. Figure 10 FIG. 4 shows a schematic diagram of a 4T6R UE according to an embodiment of the present disclosure. Figure 10 In the embodiment, Panel-1 on the top of the UE (e.g., UE antenna port pair 1) has a fixed Tx / Rx antenna Panel pair 1 (e.g., including 2T / 2R). In addition, Tx antenna switching can be performed between Panel-2 (UE antenna port pair 2) facing the front direction of the UE and Panel-3 (UE antenna port pair 3) facing the rear direction.

[0273] In one embodiment of the sounding process, there are multiple groups of SRS resources for the sounding process. Alternatively or additionally, at most one SRS resource from N different groups and at most M SRS resources from M different groups can be transmitted simultaneously or can be combined for one transmission state, where N and M are positive integers.

[0274] For example, at least one of the following rules may be configured.

[0275] In one embodiment, one SRS resource set includes three SRS resources, and there is a gap between only two given resources that cannot be combined for UL transmission or cannot be transmitted simultaneously.

[0276] In an embodiment of two SRS resource sets, one SRS resource set includes two SRS resources, while the other SRS resource set includes only one SRS resource.

[0277] Figure 11 A flow chart illustrating a process according to an embodiment of the present disclosure is shown. Figure 11 The process shown in FIG. 1 may be used for a wireless terminal (e.g., a UE) and includes the following steps:

[0278] Step 1100: Determine at least one transmission state of an uplink channel, wherein at least one of a spatial relationship or an antenna port of the uplink channel is determined based on a first transmission state of the at least one transmission state.

[0279] Step 1101: Transmit an uplink channel to a wireless network node.

[0280] exist Figure 11In the process shown in FIG, a wireless terminal determines at least one transmission state of a UL channel, wherein at least one of a spatial relationship or an antenna port of the UL channel is determined based on a first transmission state of the at least one transmission state. In one embodiment, the at least one spatial relationship and / or the at least one antenna port are determined based on the first transmission state. Based on the determined spatial relationship and / or antenna port, the UE transmits the UL channel to a radio network node (e.g., a BS or gNB).

[0281] In an embodiment, the wireless terminal may receive a command associated with at least one transmission state from a wireless network node.

[0282] In one embodiment, one of the at least one transmission state is associated with one or more RSs (e.g., at least one RS), and wherein the spatial relationship of the UL channel or at least one of the antenna ports is determined based on one of the one or more reference signals associated with the first transmission state.

[0283] In one embodiment, at least one transmission state is associated with one or more reference signals. In this embodiment, the wireless terminal further determines at least one of the one or more reference signals associated with the first transmission state of the UL channel, wherein at least one of the spatial relationship or antenna port of the UL channel is further determined based on one of the at least one determined reference signals.

[0284] In an embodiment, at least one transmission state is associated with one or more DL RSs, and wherein the path loss reference signal is determined based on at least one DL RS of the one or more DL RSs.

[0285] In an embodiment, at least one DL RS among the one or more DL RSs is associated with at least one spatial parameter (eg, QCL type D parameter).

[0286] In one embodiment, at least one DL RS among the one or more DL RSs corresponds to at least one of the following: a DL RS resource with the lowest or highest resource identification in at least one transmission state, or a DL RS resource that is (e.g., has) the first entry in at least one transmission state.

[0287] In one embodiment, the path loss estimate is determined based on an average of one or more path loss estimates corresponding to one or more DL RSs.

[0288] In one embodiment, the one or more reference signals associated with at least one transmission state include at least one of a DL RS resource, a DL RS port, an SRS resource, or an SRS port. For example, the one or more reference signals may include at least one DL RS resource and / or at least one DL RS port and / or at least one SRS resource and / or at least one SRS port.

[0289] In one embodiment, one of the at least one transmission state includes at least one of a TCI state or a spatial relationship. For example, each of the at least one transmission state may include (or be associated with) at least one TCI state and / or a spatial relationship.

[0290] In an embodiment, one of the at least one transmission state is associated with at least one panel, at least one SRS resource, or at least one SRS port.

[0291] In one embodiment, the SRS resources in one transmission state of the at least one transmission state are not in the same SRS resource set or in different SRS resource sets.

[0292] In one embodiment, the SRS resources in one transmission state of the at least one transmission state are not in the same SRS resource set or in different SRS resource sets.

[0293] In an embodiment, the number of SRS resources, SRS ports, or DL ​​RS resources in one transmission state of at least one transmission state is less than or equal to a capability or a threshold of the wireless terminal.

[0294] In one embodiment, the SRS resources or SRS ports in one transmission state in the at least one transmission state have the same index or do not have different indexes.

[0295] In one embodiment, the SRS resources or SRS ports in one transmission state in the at least one transmission state have different indexes or do not have the same index.

[0296] In one embodiment, the wireless terminal may receive a command from a radio network node indicating at least one of a DL RS resource, a DL RS port, a TCI state, an SRS resource, or an SRS port associated with one of the at least one transmission states.

[0297] In one embodiment, a wireless terminal may receive DCI from a radio network node, the DCI indicating (e.g., including) a first transmission state among at least one transmission state. In this embodiment, a length of at least one of a transmitted precoding matrix indicator field or an SRS resource indicator field in the DCI is determined based on a maximum number of one of DL RS resources, DL RS ports, a transmission configuration indication state, SRS resources, or SRS ports associated with the first transmission state.

[0298] In one embodiment, a wireless terminal may receive DCI from a wireless network node, the DCI indicating at least one transmission state. In this embodiment, Q spatial relationships, P antenna ports, and T antenna port groups for a UL channel are sequentially determined based on corresponding transmission states in the at least one transmission state, where Q, P, and T are positive integers.

[0299] In one embodiment, the length of at least one of the TPMI field or the SRS resource indicator field in the DCI is determined based on the maximum number of one of DL RS resources, DL RS ports, TCI state, transmission state, SRS resources or SRS ports associated with at least one transmission state.

[0300] In an embodiment, the wireless terminal may receive a TPMI in a DCI from the radio network node, where the TPMI indicates precoding information of at least one antenna port associated with the first transmission state.

[0301] In one embodiment, the one or more RSs associated with at least one transmission state include at least one SRS resource, and the SRS resources are grouped into a plurality of SRS resource sets.

[0302] In one embodiment, at most X SRS resources from Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources from N second SRS resource sets in the plurality of SRS resource sets are included in one transmission state of at least one transmission state, where X, Y, M, and N are positive integers. In one embodiment, X is equal to 1.

[0303] In one embodiment, at most X SRS resources from Y first SRS resource sets from the plurality of SRS resource sets and at most M SRS resources from N second SRS resource sets from the plurality of SRS resource sets are transmitted simultaneously, where X, Y, M, and N are positive integers. In one embodiment, X is equal to 1.

[0304] In one embodiment, the Y first SRS resource groups are associated with at least one antenna port shared by multiple Tx chains, and the N second SRS resource groups are associated with at least one antenna port shared by multiple other Tx chains. Figure 10 , Y first SRS resource groups may be associated with panel-2 and panel-3 shared by two Tx chains, and N second SRS resource groups are associated with panel-1 shared by another two Tx chains.

[0305] Figure 12 A flow chart illustrating a process according to an embodiment of the present disclosure is shown. Figure 12 The process shown in FIG. 1 may be used in a wireless network node (e.g., a BS) and includes the following steps:

[0306] Step 1200: Transmit a first command associated with at least one transmission state to a wireless terminal.

[0307] Step 1201: Receive an uplink channel from a wireless terminal.

[0308] exist Figure 12 In the process shown in , a radio network node may transmit a first command associated with at least one transmission state to a wireless terminal (e.g., a UE), and receive a UL channel from the wireless terminal. Note that at least one of a spatial relationship or an antenna port of the UL channel is determined based on a first transmission state in the at least one transmission state.

[0309] In an embodiment, one of the at least one transmission state is associated with one or more reference signals, and wherein at least one of the spatial relationship of the UL channel or the antenna port is determined based on one of the one or more reference signals associated with the first transmission state.

[0310] In one embodiment, at least one transmission state is associated with one or more reference signals. In this embodiment, the first command further indicates at least one reference signal from among the one or more reference signals associated with the first transmission state. Furthermore, at least one of the spatial relationship of the UL channels or the antenna ports is determined based on one of the at least one indicated reference signals.

[0311] In an embodiment, at least one transmission state is associated with one or more DL RSs, and wherein the path loss reference signal is determined based on at least one DL RS of the one or more DL RSs.

[0312] In an embodiment, at least one DL RS among the one or more DL RSs is associated with at least one spatial parameter.

[0313] In one embodiment, at least one DL RS among the one or more DL RSs corresponds to at least one of the following: a DL RS resource with the lowest or highest resource identification in at least one transmission state, or a DL RS resource that is the first entry in at least one transmission state.

[0314] In one embodiment, the path loss estimate is determined based on an average of one or more path loss estimates corresponding to one or more DL RSs.

[0315] In an embodiment, the one or more reference signals associated with at least one transmission state include at least one of a DL RS resource, a DL RS port, an SRS resource, or an SRS port.

[0316] In one embodiment, the SRS resources in one transmission state of the at least one transmission state are not in the same SRS resource set or in different SRS resource sets.

[0317] In an embodiment, the number of SRS resources, SRS ports, or DL ​​RS resources in one transmission state of at least one transmission state is less than or equal to a capability or a threshold of the wireless terminal.

[0318] In one embodiment, the SRS resources or SRS ports in one transmission state in the at least one transmission state have different indexes or do not have the same index.

[0319] In one embodiment, the SRS resources or SRS ports in one transmission state in the at least one transmission state have the same index or do not have different indexes.

[0320] In one embodiment, the radio network node transmits a second command to the wireless terminal, the second command indicating at least one of a DL RS resource, a DL RS port, a transmission configuration indication state, an SRS resource, or an SRS port associated with one of the at least one transmission state.

[0321] In one embodiment, a radio network node transmits a DLI to a wireless terminal, the DLI indicating a first transmission state among at least one transmission state. In this embodiment, a length of at least one of a transmitted precoding matrix indicator field or an SRS resource indicator field in the DLI is determined based on a maximum number of one of DL RS resources, DL RS ports, a transmission configuration indication state, SRS resources, or SRS ports associated with the first transmission state.

[0322] In one embodiment, a wireless network node transmits a DLI to a wireless terminal, the DLI indicating at least one transmission state, wherein Q spatial relationships, P antenna ports, and T antenna port groups of a UL channel are determined in sequence based on a corresponding transmission state in the at least one transmission state, where Q, P, and T are positive integers.

[0323] In one embodiment, the length of at least one of the transmitted precoding matrix indicator field or the SRS resource indicator field in the DLI is determined based on a maximum number of one of DL RS resources, DL RS ports, a transmission configuration indication state, a transmission state, SRS resources, or SRS ports associated with at least one transmission state.

[0324] In an embodiment, the radio network node transmits a transmitted precoding matrix indicator in a DCI to the wireless terminal, the transmitted precoding matrix indicator indicating precoding information of at least one antenna port associated with the first transmission state.

[0325] In an embodiment, the one or more reference signals associated with at least one transmission state include at least one SRS resource, and the SRS resources are grouped into a plurality of SRS resource sets.

[0326] In one embodiment, at most X SRS resources from Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources from N second SRS resource sets in the plurality of SRS resource sets are included in one transmission state of at least one transmission state, where X, Y, M and N are positive integers.

[0327] In one embodiment, at most X SRS resources in Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in N second SRS resource sets in the plurality of SRS resource sets are transmitted simultaneously, where X, Y, M and N are positive integers.

[0328] In an embodiment, the Y first SRS resource groups are associated with at least one antenna port shared by multiple transmit chains, and the N second SRS resource groups are associated with at least one antenna port shared by multiple other transmit chains.

[0329] Figure 13 A flow chart illustrating a process according to one embodiment of the present disclosure is shown. Figure 13 The process shown in FIG. 1 may be used for a wireless terminal (e.g., a UE) and includes the following steps:

[0330] Step 1300: Transmit an uplink channel to a wireless network node in a first transmission mode.

[0331] Step 1301: Transmit an uplink channel to the radio network node in a second transmission mode after the time gap.

[0332] exist Figure 13In the illustrated process, a wireless terminal transmits an UL channel to a wireless network node in a first transmission mode and, after a time gap, transmits another UL channel in a second transmission mode. Note that the first transmission mode or the second transmission mode is determined based on at least one of a panel, a transmission state, or the number of antenna ports.

[0333] In an embodiment, the wireless terminal does not perform UL transmission (if any) during the time gap.

[0334] In one embodiment, the first transmission mode and the second transmission mode are associated with at least one of different panels, different transmission states, different numbers of antenna ports, or different numbers of panels. In other words, the first transmission mode and the second transmission mode can be distinguished by at least one of the panels, the transmission states, the number of antenna ports, or the number of panels associated with them.

[0335] In one embodiment, the first transmission mode and the second transmission mode indicate the number of antenna ports used to transmit the UL channel.

[0336] In one embodiment, the first transmission mode and the second transmission mode are configured by the radio network node.

[0337] In an embodiment, at least one of the duration of the time gap, the maximum number of antenna ports, or the maximum number of antenna ports in a single transmission state is determined based on a capability or a threshold of the wireless terminal.

[0338] Figure 14 A flow chart illustrating a process according to an embodiment of the present disclosure is shown. Figure 14 The process shown in FIG. 1 may be used for a wireless terminal (e.g., a UE) and includes the following steps:

[0339] Step 1400: Transmit a UL channel to a radio network node in a first transmission mode within a time unit.

[0340] Step 1401: Stop transmitting the uplink channel in the second transmission mode in the time interval after the time unit.

[0341] exist Figure 14 In the process shown in , a wireless terminal transmits a UL channel to a wireless network node (e.g., a BS) in a first transmission mode within a time unit. In this embodiment, for a time interval after the time unit (e.g., within or within the time interval), the wireless terminal stops (e.g., any) transmission of another UL channel in a second transmission mode. Note that each of the first and second transmission modes is determined based on at least one of a panel, a transmission state, or the number of antenna ports.

[0342] In one embodiment, the first transmission mode and the second transmission mode are associated with at least one of different panels, different transmission states, different numbers of antenna ports, or different numbers of panels. In other words, the first transmission mode and the second transmission mode can be distinguished by at least one of the panels, the transmission states, the number of antenna ports, or the number of panels associated with them.

[0343] In one embodiment, the first transmission mode and the second transmission mode indicate the number of antenna ports used to transmit the UL channel.

[0344] In one embodiment, the first transmission mode and the second transmission mode are configured by the radio network node.

[0345] In an embodiment, at least one of the duration of the time gap, the maximum number of antenna ports, or the maximum number of antenna ports in a single transmission state is determined based on a capability or a threshold of the wireless terminal.

[0346] Figure 15 A flow chart illustrating a process according to one embodiment of the present disclosure is shown. Figure 15 The process shown in FIG. 1 may be used in a wireless network node (e.g., a BS) and includes the following steps:

[0347] Step 1500: Receive an uplink channel from a wireless terminal in a first transmission mode.

[0348] Step 1501: Receive an uplink channel from the wireless terminal in the second transmission mode after the time gap.

[0349] exist Figure 15 In the process shown in FIG, a radio network node may receive an UL channel from a wireless terminal (e.g., a UE) in a first transmission mode. In this embodiment, the radio network node is (expected to) receive another UL channel in a second transmission mode after a time gap. In other words, if the transmission mode of transmitting two consecutive UL channels is changed, a time gap is expected between the two UL channels.

[0350] In an embodiment, each of the first transmission mode and the second transmission mode is determined based on at least one of a panel, a transmission state, or a number of antenna ports.

[0351] In an embodiment, the first transmission mode and the second transmission mode are associated with at least one of different panels, different transmission states, different numbers of antenna ports, or numbers of panels.

[0352] In one embodiment, the first transmission mode and the second transmission mode indicate the number of antenna ports used to transmit the UL channel.

[0353] In one embodiment, the radio network node transmits configurations of the first transmission mode and the second transmission mode to the wireless terminal.

[0354] In an embodiment, at least one of the duration of the time gap, the maximum number of antenna ports, or the maximum number of antenna ports in a single transmission state is determined based on a capability or a threshold of the wireless terminal.

[0355] Although various embodiments of the present disclosure have been described above, it should be understood that they are presented by way of example only and not by way of limitation. Similarly, various schematic diagrams may depict exemplary architectures or configurations, which are provided to enable those of ordinary skill in the art to understand the exemplary features and functions of the present disclosure. However, these persons of ordinary skill will understand that the present disclosure is not limited to the exemplary architectures or configurations shown, but may be implemented using various alternative architectures and configurations. In addition, as those of ordinary skill in the art will understand, one or more features of one embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the exemplary embodiments described above.

[0356] It should also be understood that any reference to an element herein using names such as "first," "second," etc. does not generally limit the number or order of those elements. Rather, these names may be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to a first and a second element does not mean that only two elements may be used or that the first element must precede the second element in some manner.

[0357] Furthermore, those skilled in the art will appreciate that any of a variety of different technologies and techniques may be employed to represent information and signals. For example, data, instructions, commands, information, signals, bits, and symbols that may be mentioned in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0358] Those skilled in the art will further appreciate that any of the various exemplary logical blocks, units, processors, devices, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of both), firmware, various forms of programs or design code incorporating instructions (which, for convenience, may be referred to herein as "software" or "software units"), or any combination of these technologies.

[0359] In order to clearly illustrate this interchangeability of hardware, firmware and software, various exemplary components, blocks, units, circuits and steps have been generally described above in terms of their functions. Whether these functions are implemented as hardware, firmware or software or a combination of these technologies depends on the specific application and the design constraints imposed on the entire system. Technicians can implement the functions in various ways for each specific application, but these implementation decisions do not result in departure from the scope of this disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, units, etc. can be configured to perform one or more functions described herein. The terms "configured to" or "configured for" used herein for a particular operation or function refer to that the processor, device, component, circuit, structure, machine, unit, etc. is physically constructed, programmed and / or configured to perform a particular operation or function.

[0360] In addition, it will be understood by those skilled in the art that the various exemplary logic blocks, units, devices, components and circuits described herein may be implemented within or performed by an integrated circuit (IC), which may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device or any combination thereof. The logic blocks, units and circuits may also include an antenna and / or a transceiver to communicate with various components within a network or device. The general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration that performs the functions described herein. If implemented in software, these functions may be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein may be implemented as software stored on a computer-readable medium.

[0361] Computer-readable media include computer storage media and communication media, including any medium that can transfer a computer program or code from one place to another. The storage medium can be any available medium that a computer can access. As non-limiting examples, these computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage device or any other medium that can be used to store the required program code in the form of instructions or data structures and can be accessed by a computer.

[0362] As used herein, the term "unit" refers to software, firmware, hardware, and any combination of these elements for performing the relevant functions described herein. In addition, for the purpose of discussion, various units are described as discrete units; however, it is obvious to those skilled in the art that two or more units can be combined to form a single unit that performs the relevant functions according to the embodiments of the present disclosure.

[0363] In addition, in embodiments of the present disclosure, memories or other storage devices and communication components may be used. It should be understood that, for the sake of clarity, the above description has described embodiments of the present disclosure with reference to different functional units and processors. However, it is apparent that any suitable distribution of functions between different functional units, processing logic elements or domains may be used without departing from the present disclosure. For example, functions illustrated as being performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Therefore, references to specific functional units are merely references to suitable devices for providing the functions, rather than representing a strict logical or physical structure or organization.

[0364] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of this disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A wireless communication method for a wireless terminal, the wireless communication method comprising: determining at least one transmission state of an uplink channel, wherein at least one of a spatial relationship or an antenna port of the uplink channel is determined based on a first transmission state of the at least one transmission state; as well as Transmitting the uplink channel to the wireless network node; wherein the at least one transmission state is associated with one or more downlink reference signals, and wherein the path loss reference signal is determined based on at least one downlink reference signal of the one or more downlink reference signals; wherein the path loss estimate is determined based on an average of one or more path loss estimates corresponding to the one or more downlink reference signals; as well as At least one downlink reference signal among the one or more downlink reference signals corresponds to at least one of the following: a downlink reference signal resource with a lowest or highest resource identifier in the at least one transmission state, or a downlink reference signal resource that is the first entry in the at least one transmission state.

2. The wireless communication method according to claim 1, wherein one of the at least one transmission state is associated with one or more reference signals, and wherein at least one of the spatial relationship of the uplink channel or the antenna port is determined based on one of the one or more reference signals associated with the first transmission state.

3. The wireless communication method according to claim 1 , wherein the at least one transmission state is associated with one or more reference signals, and the wireless communication method further comprises: At least one of the one or more reference signals associated with a first transmission state of the uplink channel is determined, wherein at least one of a spatial relationship or an antenna port of the uplink channel is further determined based on a reference signal of the at least one determined reference signal. 4 . The wireless communication method according to claim 1 , wherein at least one downlink reference signal of the one or more downlink reference signals is related to at least one spatial parameter. 5 . The wireless communication method according to claim 1 , wherein the one or more reference signals associated with the at least one transmission state include at least one of a downlink reference signal resource, a downlink reference signal port, a sounding reference signal (SRS) resource, or an SRS port. 6 . The wireless communication method of claim 1 , wherein one of the at least one transmission state comprises at least one of a transmission configuration indication state or a spatial relationship. 7 . The wireless communication method according to claim 1 , wherein one of the at least one transmission state is associated with at least one panel, at least one SRS resource, or at least one SRS port. 8 . The wireless communication method according to claim 5 , wherein the SRS resources in one transmission state of the at least one transmission state are not in the same SRS resource set or in different SRS resource sets.

9. The wireless communication method according to claim 5, wherein the number of SRS resources, SRS ports or downlink reference signal resources in one transmission state of the at least one transmission state is less than or equal to the capability or threshold of the wireless terminal. 10 . The wireless communication method according to claim 5 , wherein the SRS resources or SRS ports in one transmission state of the at least one transmission state have different indexes or do not have the same index. 11 . The wireless communication method according to claim 5 , wherein the SRS resources or SRS ports in one transmission state of the at least one transmission state have the same index or do not have different indexes.

12. The wireless communication method according to claim 5, further comprising: A command is received from the radio network node, the command indicating at least one of a downlink reference signal resource, a downlink reference signal port, a transmission configuration indication state, an SRS resource, or an SRS port associated with one of the at least one transmission state.

13. The wireless communication method according to claim 5, further comprising: receiving downlink control information (DCI) from the radio network node, the downlink control information indicating a first transmission state of the at least one transmission state; The length of at least one of the transmitted precoding matrix indicator field or the SRS resource indicator field in the DCI is determined based on the maximum number of one of the downlink reference signal resources, downlink reference signal ports, transmission configuration indication state, SRS resources or SRS ports associated with the first transmission state.

14. The wireless communication method according to claim 5, further comprising: A DCI is received from the radio network node, the DCI indicating the at least one transmission state, wherein Q spatial relationships, P antenna ports, and T antenna port groups of the uplink channel are sequentially determined based on a corresponding transmission state in the at least one transmission state, where Q, P, and T are positive integers.

15. The wireless communication method according to claim 14, wherein the length of at least one of the transmitted precoding matrix indicator field or the SRS resource indicator field in the DCI is determined based on a maximum number of one of a downlink reference signal resource, a downlink reference signal port, a transmission configuration indication state, a transmission state, an SRS resource, or an SRS port associated with the at least one transmission state.

16. The wireless communication method according to claim 5, further comprising: A precoding matrix indicator transmitted in DCI is received from the radio network node, the precoding matrix indicator indicating precoding information for at least one antenna port associated with the first transmission state. 17 . The wireless communication method according to claim 5 , wherein the one or more reference signals associated with the at least one transmission state include at least one SRS resource, and the SRS resources are grouped into a plurality of SRS resource sets.

18. The wireless communication method according to claim 17 , wherein at most X SRS resources in the Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in the N second SRS resource sets in the plurality of SRS resource sets are included in one transmission state of the at least one transmission state, Where X, Y, M, and N are positive integers.

19. The wireless communication method according to claim 17, wherein at most X SRS resources in Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in N second SRS resource sets in the plurality of SRS resource sets are transmitted simultaneously. Where X, Y, M, and N are positive integers.

20. The wireless communication method according to claim 18 or 19, wherein the Y first SRS resource sets are associated with at least one antenna port shared by multiple transmission chains, and the N second SRS resource sets are associated with at least one antenna port shared by multiple other transmission chains.

21. A wireless communication method for a wireless network node, the wireless communication method comprising: transmitting a first command associated with at least one transmission state to a wireless terminal; as well as receiving an uplink channel from the wireless terminal, wherein at least one of the spatial relationship or antenna port of the uplink channel is determined based on a first transmission state in the at least one transmission state; wherein the at least one transmission state is associated with one or more downlink reference signals, and wherein the path loss reference signal is determined based on at least one downlink reference signal of the one or more downlink reference signals; wherein the path loss estimate is determined based on an average of one or more path loss estimates corresponding to the one or more downlink reference signals; as well as At least one of the one or more downlink reference signals corresponds to at least one of the following: a downlink reference signal resource with a lowest or highest resource identifier in the at least one transmission state, or a downlink reference signal resource as the first entry in the at least one transmission state.

22. A wireless communication method according to claim 21, wherein one of the at least one transmission states is associated with one or more reference signals, and wherein the spatial relationship of the uplink channel or at least one of the antenna ports is determined based on one of the one or more reference signals associated with the first transmission state.

23. The wireless communication method according to claim 21, wherein the at least one transmission state is associated with one or more reference signals, wherein the first command further indicates at least one reference signal of one or more reference signals associated with the first transmission state, and The method further determines at least one of the spatial relationship of the uplink channel or the antenna port based on one of the at least one reference signal indicated. 24 . The wireless communication method according to claim 21 , wherein at least one downlink reference signal of the one or more downlink reference signals is related to at least one spatial parameter.

25. The wireless communication method of claim 21, wherein the one or more reference signals associated with the at least one transmission state include at least one of a downlink reference signal resource, a downlink reference signal port, a sounding reference signal (SRS) resource, or an SRS port.

26. The wireless communication method of claim 21, wherein one of the at least one transmission state comprises at least one of a transmission configuration indication state or a spatial relationship.

27. The wireless communication method of claim 21, wherein one of the at least one transmission state is associated with at least one panel, at least one sounding reference signal (SRS) resource, or at least one SRS port. 28 . The wireless communication method according to claim 25 , wherein the SRS resources in one transmission state of the at least one transmission state are not in the same SRS resource set or in different SRS resource sets.

29. The wireless communication method according to claim 25, wherein the number of SRS resources, SRS ports or downlink reference signal resources in one transmission state of the at least one transmission state is less than or equal to the capability or threshold of the wireless terminal. 30 . The wireless communication method according to claim 25 , wherein SRS resources or SRS ports in one transmission state of the at least one transmission state have different indexes or do not have the same index. 31 . The wireless communication method according to claim 25 , wherein SRS resources or SRS ports in one transmission state of the at least one transmission state have the same index or do not have different indexes.

32. The wireless communication method according to claim 25, further comprising: A second command is transmitted to the wireless terminal, where the second command indicates at least one of a downlink reference signal resource, a downlink reference signal port, a transmission configuration indication state, an SRS resource, or an SRS port associated with one of the at least one transmission states.

33. The wireless communication method according to claim 25, further comprising: transmitting downlink control information to the wireless terminal, wherein the downlink control information indicates a first transmission state among the at least one transmission state; The length of at least one of the transmitted precoding matrix indicator field or the SRS resource indicator field in the downlink control information (DCI) is determined based on a maximum number of one of a downlink reference signal resource, a downlink reference signal port, a transmission configuration indication state, an SRS resource, or an SRS port associated with the first transmission state.

34. The wireless communication method according to claim 25, further comprising: Downlink control information is transmitted to the wireless terminal, where the downlink control information indicates at least one transmission state, wherein Q spatial relationships, P antenna ports, and T antenna port groups of the uplink channel are determined in sequence based on a corresponding transmission state in the at least one transmission state, where Q, P, and T are positive integers.

35. The wireless communication method according to claim 34, wherein the length of at least one of the transmitted precoding matrix indicator field or the SRS resource indicator field in the downlink control information (DCI) is determined based on a maximum number of one of a downlink reference signal resource, a downlink reference signal port, a transmission configuration indication state, a transmission state, an SRS resource, or an SRS port associated with the at least one transmission state.

36. The wireless communication method according to claim 25, further comprising: The transmitted precoding matrix indicator in the downlink control information is transmitted to the wireless terminal, where the precoding matrix indicator indicates precoding information of at least one antenna port associated with the first transmission state.

37. The wireless communication method of claim 25, wherein the one or more reference signals associated with the at least one transmission state include at least one SRS resource, and the SRS resources are grouped into a plurality of SRS resource sets.

38. The wireless communication method according to claim 37 , wherein at most X SRS resources in the Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in the N second SRS resource sets in the plurality of SRS resource sets are included in one transmission state of the at least one transmission state, Where X, Y, M, and N are positive integers.

39. The wireless communication method according to claim 37, wherein at most X SRS resources in Y first SRS resource sets in the plurality of SRS resource sets and at most M SRS resources in N second SRS resource sets in the plurality of SRS resource sets are transmitted simultaneously. Where X, Y, M, and N are positive integers.

40. The wireless communication method according to claim 38 or 39, wherein the Y first SRS resource sets are associated with at least one antenna port shared by multiple transmission chains, and the N second SRS resource sets are associated with at least one antenna port shared by multiple other transmission chains.

41. A wireless terminal comprising: a communication unit configured to determine at least one transmission state of an uplink channel, wherein at least one of a spatial relationship or an antenna port of the uplink channel is determined based on a first transmission state of the at least one transmission state; as well as a processor configured to transmit the uplink channel to a wireless network node; wherein the at least one transmission state is associated with one or more downlink reference signals, and wherein the path loss reference signal is determined based on at least one downlink reference signal of the one or more downlink reference signals; wherein the path loss estimate is determined based on an average of one or more path loss estimates corresponding to the one or more downlink reference signals; as well as At least one downlink reference signal among the one or more downlink reference signals corresponds to at least one of the following: a downlink reference signal resource with a lowest or highest resource identifier in the at least one transmission state, or a downlink reference signal resource that is the first entry in the at least one transmission state.

42. The wireless terminal according to claim 41, wherein the processor is further configured to execute the wireless communication method according to any one of claims 2 to 20.

43. A wireless network node, comprising: Communication unit, configured as: transmitting a first command associated with at least one transmission state to a wireless terminal; as well as receiving an uplink channel from the wireless terminal, wherein at least one of the spatial relationship or antenna port of the uplink channel is determined based on a first transmission state in the at least one transmission state; wherein the at least one transmission state is associated with one or more downlink reference signals, and wherein the path loss reference signal is determined based on at least one downlink reference signal of the one or more downlink reference signals; wherein the path loss estimate is determined based on an average of one or more path loss estimates corresponding to the one or more downlink reference signals; as well as At least one downlink reference signal among the one or more downlink reference signals corresponds to at least one of the following: a downlink reference signal resource with a lowest or highest resource identifier in the at least one transmission state, or a downlink reference signal resource that is the first entry in the at least one transmission state.

44. The wireless network node of claim 43, further comprising: A processor configured to execute the wireless communication method according to any one of claims 22 to 40.

45. A computer program product comprising computer-readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the wireless communication method of any one of claims 1 to 40.

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