Probing eight antenna ports on multiple OFDM symbols

Abstract

A method and apparatus for probing eight antenna ports on a plurality of OFDM symbols is disclosed. In one embodiment, a UE comprises: a transceiver; and a processor coupled to the transceiver, where the processor is configured to receive, via the transceiver, a configuration for configuring, for an SRS resource having formula (II) SRS ports, a number of OFDM symbols for all 8 antenna port sounding for one SRS resource transmission (formula (I)), and a configuration for configuring one or more cyclic shifts and one or more comb offsets for the SRS resource; and determining a cyclic shift value (formula (III)) and a comb offset (formula (IV)) for each of the eight SRS ports in each of the OFDM symbols for one SRS resource transmission of the SRS resource according to the configuration. Formula (I) # imgabs0 # formula (II) # imgabs1 # formula (III) # imgabs2 # formula (IV) # imgabs3 #

Description

Technical Field

[0001] The subject matter disclosed herein relates generally to wireless communications, and more particularly to methods and apparatus for probing eight antenna ports over multiple OFDM symbols. Background Art

[0002] The following abbreviations are defined in the following description, at least some of which are referenced in the following description: New Radio (NR), Very Large Scale Integration (VLSI), Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM or Flash), Compact Disc Read Only Memory (CD-ROM), Local Area Network (LAN), Wide Area Network (WAN), User Equipment (UE), Evolved Node B (eNB), Next Generation Node B (gNB), Uplink (UL), Downlink (DL), Central Processing Unit (CPU), Graphics Processing Unit (GPU), Field Programmable Gate Array (FGPA), Orthogonal Frequency Division Multiplexing (OFDM), Radio Resource Control (RRC), User Entity / Equipment (Mobile Terminal), Transmitter (TX), Receiver (RX), Sounding Reference Signal (SRS), Physical Uplink Shared Channel (PUSCH), Cyclic Shift (CS), Time Division Duplex (TDD), Third Generation Partnership Project (3GPP), Technical Specification (TS).

[0003] SRS is used for UL channel estimation for UL scheduling. The gNB can also obtain the DL channel or some parameters of the DL channel through SRS based on the channel reciprocity of the TDD system.

[0004] In the frequency domain, SRS has a comb structure, which means that SRS is sent on every K subcarriers of the sounding bandwidth, where K can be 2, 4, or 8 corresponding to comb-2, comb-4, or comb-8, which can be determined by =2 or 4 or 8. Different SRS ports of the same SRS resource can be frequency reused by being assigned different comb offsets. For example, when comb-2 ( =2) is configured for an SRS resource with two SRS ports, all odd subcarriers corresponding to the comb offset value are allocated to one SRS port, and all even subcarriers corresponding to the other comb offset value are allocated to the other SRS port.

[0005] In the sequence domain, by assigning different cyclic shifts (CS) of the same SRS sequence, orthogonal sequences can be assigned to different SRS ports of the SRS resource. Since different CSs of an SRS sequence are equal to phase rotations in the frequency domain, the number of available CSs, which is referred to as the maximum number of CSs corresponding to different comb sizes, is limited as shown in Table 1, which is Table 6.4.1.4.2-1 specified in 3GPP TS38.211V17.2.0.

[0006]

[0007] Table 1: According to The maximum number of cyclic shifts ( )

[0008] In NR Release 18, for advanced devices with 8 antenna ports (i.e. 8Tx UE), it is agreed to support up to 8 layers of PUSCH. 8-port SRS will also be supported for UL channel sounding of codebook-based PUSCH transmissions for 8Tx UEs. In addition to sounding all 8 antenna ports in one OFDM symbol, it is agreed to support sounding all 8 antenna ports in multiple OFDM symbols to increase SRS coverage.

[0009] The present disclosure targets a detailed design for probing 8 antenna ports in multiple OFDM symbols in the same SRS resource. Summary of the invention

[0010] A method and apparatus for probing eight antenna ports over multiple OFDM symbols is disclosed.

[0011] In one embodiment, a UE includes: a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to receive, via the transceiver, a The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is A configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and determining a cyclic shift value for each of eight SRS ports in each of an OFDM symbol for an SRS resource transmission of the SRS resource according to the configuration and comb offset .

[0012] In some embodiments, this configuration is performed by directly configuring the number of OFDM symbols. The number of OFDM symbols is 2 or 4. Alternatively, the configuration is performed by configuring the number of SRS ports in each OFDM symbol. The number of SRS ports is equal to and is either 4 or 2.

[0013] In some embodiments, the processor is further configured to transmit the SRS across the OFDM symbol. The antenna ports evenly divide the serving cell Carrier Activities of UL BWP The transmission power on The linear value of ,in .

[0014] In some embodiments, when a single cyclic shift and a single comb offset are configured for an SRS resource, SRS ports 0, ..., Each of the shares the same cyclic shift value and the same comb offset .

[0015] if , then according to Determine the cyclic shift values ​​SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is a single cyclic shift configured for the SRS resource.

[0016] if , then according to Determine the comb offset of SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is the comb size configured for the SRS resource, Is a single comb offset configured for an SRS resource.

[0017] if , then according to determining the SRS ports 0, 1 in the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol ( =0, 1) of the cyclic shift values, where ,in is a single cyclic shift configured for the SRS resource.

[0018] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) comb offset, where Is a single comb offset configured for an SRS resource.

[0019] In some embodiments, SRS ports 0, ..., Associated with different antenna ports.

[0020] In some embodiments, the processor is further configured to report the partial coherence capability with multiple antenna groups, and all antenna ports within the same antenna group are associated with SRS ports of SRS resource transmissions in the same OFDM symbol.

[0021] In some embodiments, when the SRS resource is also configured with frequency hopping, the number of SRS transmissions is based on the frequency of the aperiodic SRS resource. or periodic and semi-persistent SRS To count.

[0022] In some embodiments, when the SRS resource is also configured with repetition, the number of OFDM symbols used for SRS transmission is multiples of.

[0023] In another embodiment, a method performed at a UE includes: receiving a The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is A configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and determining a cyclic shift value for each of eight SRS ports in each of an OFDM symbol for an SRS resource transmission of the SRS resource according to the configuration and comb offset .

[0024] In yet another embodiment, a base station unit includes: a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to send, via the transceiver, a signal for providing a signal to a user having The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is A configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and determining a cyclic shift value for each of eight SRS ports in each of an OFDM symbol for an SRS resource transmission of the SRS resource according to the configuration and comb offset .

[0025] In yet another embodiment, a method performed at a base station unit includes: sending a signal for receiving a signal having The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is A configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and determining a cyclic shift value for each of eight SRS ports in each of an OFDM symbol for an SRS resource transmission of the SRS resource according to the configuration and comb offset . BRIEF DESCRIPTION OF THE DRAWINGS

[0026] A more particular description of the embodiments briefly described above will be presented by reference to specific embodiments shown in the accompanying drawings. Understanding that these drawings depict only some embodiments and are therefore not to be considered limiting of scope, the embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which:

[0027] Figure 1(a) illustrates the fully coherent antenna layout;

[0028] Figure 1(b) illustrates a non-coherent antenna layout;

[0029] FIG1( c ) illustrates a partially coherent antenna arrangement 1 ;

[0030] Figure 1(d) illustrates a partially coherent antenna arrangement 2;

[0031] FIG2( a ) illustrates an example of frequency hopping for probing 8 antenna ports over 2 symbols;

[0032] FIG2( b ) illustrates an example of repetition for probing 8 antenna ports over 2 symbols;

[0033] Figure 3 is a schematic flow chart illustrating an embodiment of a method;

[0034] Figure 4 is a schematic flow chart illustrating an embodiment of another method; and

[0035] Figure 5 is a schematic block diagram illustrating an apparatus according to one embodiment. DETAILED DESCRIPTION

[0036] As will be appreciated by those skilled in the art, certain aspects of the embodiments may be embodied as systems, devices, methods, or program products. Thus, the embodiments may take the form of fully hardware embodiments, fully software embodiments (including firmware, resident software, microcode, etc.), or embodiments combining software and hardware aspects, which are generally referred to herein as "circuits," "modules," or "systems." In addition, the embodiments may take the form of a program product embodied in one or more computer-readable storage devices that store machine-readable code, computer-readable code, and / or program code (hereinafter referred to as "code"). The storage device may be tangible, non-transient, and / or non-transmitting. The storage device may not embody a signal. In a certain embodiment, the storage device employs only a signal for accessing the code.

[0037] Certain functional units described in this specification may be labeled as "modules" to more specifically emphasize their independent implementation. For example, a module may be implemented as a hardware circuit, including a custom very large scale integrated circuit (VLSI) circuit or gate array, an off-the-shelf semiconductor (e.g., a logic chip, a transistor, or other discrete component). A module may also be implemented in a programmable hardware device such as a field programmable gate array, a programmable array logic, a programmable logic device, etc.

[0038] Modules can also be implemented in the form of code and / or software for execution by various types of processors. For example, an identified code module may include one or more physical or logical blocks of executable code, which may be organized, for example, as objects, procedures, or functions. Nevertheless, the executable files of the identified modules do not have to be physically located together, but may include different instructions stored in different locations, which, when logically combined together, comprise the module and achieve the stated purpose of the module.

[0039] In fact, a code module may include a single instruction or multiple instructions, and may even be distributed across several different code segments, different programs, and across several storage devices. Similarly, operational data may be identified and described in this article within a module, and may be embodied and organized in any suitable form in a data structure of any suitable type. Operational data may be collected as a single data set, or may be distributed in different locations, including on different computer-readable storage devices. When a module or a portion of a module is implemented in software, the software portion is stored on one or more computer-readable storage devices.

[0040] Any combination of one or more computer readable media may be utilized. The computer readable medium may be a computer readable storage medium. The computer readable storage medium may be a storage device storing code. The storage device may be, for example, but not necessarily, an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical or semiconductor system, apparatus or device, or any suitable combination of the foregoing.

[0041] A non-exhaustive list of more specific examples of storage devices would include the following: an electrical connection with one or more cables, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the context of this document, a computer-readable storage medium may be any tangible medium that can contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0042] The code for performing the operations of the embodiments may include any number of lines and may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Python, Ruby, Java, Smalltalk, C++, etc., as well as conventional procedural programming languages ​​such as the "C" programming language, etc., and / or machine languages ​​such as assembly language. The code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer, partially on a remote computer, or entirely on a remote computer or server. In the last scenario, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0043] Throughout the specification, references to "one embodiment," "an embodiment," or similar language mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment. Therefore, the phrases "in one embodiment," "in an embodiment," and similar language appearing throughout the specification may, but do not necessarily, all refer to the same embodiment, but rather mean "one or more but not all embodiments," unless expressly provided otherwise. The terms "comprise," "comprising," "having," and variations thereof mean "including but not limited to," unless expressly provided otherwise. Unless expressly provided otherwise, an enumerated list of items does not mean that any or all items are mutually exclusive. The terms "one," "an," and "the" also refer to "one or more."

[0044] In addition, the features, structures or characteristics of the various embodiments may be combined in any suitable manner. In the following description, many specific details are provided, such as examples of programming, software modules, user selections, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc., to provide a thorough understanding of the embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of the specific details or using other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obfuscating any aspect of the embodiments.

[0045] Aspects of different embodiments will be described below with reference to schematic flow charts and / or schematic block diagrams of methods, devices, systems, and program products according to embodiments. It will be understood that each box in the schematic flow chart and / or schematic block diagram and the combination of boxes in the schematic flow chart and / or schematic block diagram can be implemented by code. The code can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to generate a machine, so that instructions executed by a processor of a computer or other programmable data processing device create a device for implementing the functions specified for the box or multiple boxes in the schematic flow chart and / or schematic block diagram.

[0046] The code may also be stored in a storage device that can direct a computer, other programmable data processing device or other device to operate in a specific manner so that the instructions stored in the storage device produce an article of manufacture, including instructions for implementing the functions specified in the schematic flowchart and / or schematic block diagram.

[0047] The code may also be loaded onto a computer, other programmable data processing device, or other device to cause a series of operational steps to be performed on the computer, other programmable device, or other device to produce a computer-implemented process, such that the code executed on the computer or other programmable device provides a process for implementing the functions specified in the flowchart and / or block diagram.

[0048] The schematic flow charts and / or schematic block diagrams in the figures illustrate possible implementation architectures, functions and operations of devices, systems, methods and program products according to various embodiments. In this regard, each box in the schematic flow charts and / or schematic block diagrams may represent a module, a segment or a portion of code, which includes one or more executable instructions for implementing the code of the specified logical function.

[0049] It should also be noted that in some alternative embodiments, the functions indicated in the blocks may not occur in the order noted in the figure. For example, two blocks shown in succession may be executed substantially simultaneously, or may sometimes be executed in reverse order, depending on the functions involved. Other steps and methods are contemplated that are equivalent in function, logic, or effect to one or more blocks, or portions thereof, in the illustrated figure.

[0050] Although various arrow types and line types can be used in flow charts and / or block diagrams, it should be understood that they do not limit the scope of the corresponding embodiments. In fact, some arrows or other connectors can be used to indicate only the logical flow of the depicted embodiment. For example, an arrow can indicate a waiting or monitoring period of unspecified duration between the enumeration steps of the depicted embodiment. It should also be noted that each frame of the block diagram and / or flow chart and the combination of frames in the block diagram and / or flow chart can be implemented by a special hardware system or a combination of special hardware and code that performs a specified function or action.

[0051] The description of an element in each figure may refer to an element in a previous figure. In all figures, the same reference numerals refer to the same elements, including alternative embodiments of similar elements.

[0052] First, an introduction to antenna layout is provided.

[0053] Different antenna groups can be configured for different antenna layouts. For discussion purposes, the concept of "coherent antenna group" is used in this disclosure. A coherent antenna group is defined as: all antenna ports within the same coherent antenna group are coherent, which means that all antenna ports within the same coherent antenna group can be used for transmission of one PUSCH layer, and antenna ports from different coherent antenna groups are incoherent, which means that antenna ports from different coherent antenna groups cannot be used for transmission of one PUSCH layer.

[0054] All antenna ports within a coherent antenna group (which means these antenna ports are coherent antenna ports) can be used for transmission of one PUSCH layer. Different coherent antenna groups can be used for transmission of different PUSCH layers.

[0055] From the perspective of channel estimation, the phase difference between coherent antennas for a certain channel condition is fixed. Therefore, the precoding design supports co-phase-based precoding for coherent antenna port transmission. However, the phase difference between non-coherent antenna ports is random. Therefore, non-coherent antenna ports cannot be used for co-phase-based transmission. Therefore, the PUSCH layer can only be sent on the coherent antenna port set.

[0056] 1( a ) to 1 ( d ) illustrate different antenna arrangements for eight antenna ports. The eight antenna ports may be numbered as antenna ports 1000 , 1001 , 1002 , 1003 , 1004 , 1005 , 1006 , and 1007 .

[0057] FIG1( a ) illustrates a fully coherent antenna layout, in which all antenna ports 1000 , 1001 , 1002 , 1003 , 1004 , 1005 , 1006 , and 1007 belong to one coherent antenna group. That is, there is one coherent antenna group in the fully coherent antenna layout, and one coherent antenna group includes eight antenna ports.

[0058] FIG1( b ) illustrates a non-coherent antenna layout, wherein each of antenna ports 1000 , 1001 , 1002 , 1003 , 1004 , 1005 , 1006 , and 1007 belongs to a different coherent antenna group. That is, there are eight coherent antenna groups in the non-coherent antenna layout, wherein each of the eight coherent antenna groups includes one antenna port.

[0059] FIG1(c) illustrates a partially coherent antenna layout 1, in which four antenna ports (e.g., antenna ports 1000, 1001, 1004, and 1005) belong to one coherent antenna group, and the other four antenna ports (e.g., antenna ports 1002, 1003, 1006, and 1007) belong to another coherent antenna group. That is, there are two coherent antenna groups in the partially coherent antenna layout 1, wherein each of the two coherent antenna groups includes four antenna ports.

[0060] FIG1(d) illustrates a partially coherent antenna layout 2 in which two antenna ports belong to one coherent antenna group. For example, antenna ports 1000 and 1004 belong to the first coherent antenna group; antenna ports 1001 and 1005 belong to the second coherent antenna group; antenna ports 1002 and 1006 belong to the third coherent antenna group; and antenna ports 1003 and 1007 belong to the fourth coherent antenna group. That is, there are four coherent antenna groups in the partially coherent antenna layout 2, each of which contains two antenna ports.

[0061] When the SRS resource is configured with 8 SRS ports, i.e., the higher layer parameters is set to 8 The gNB can also configure the number of OFDM symbols to be sounded by all 8 antenna ports for one SRS resource transmission, e.g., via the RRC parameter Directly configure the number of OFDM symbols, or by configuring the number of SRS ports used for SRS transmission in each OFDM symbol, for example, via the RRC parameter . In the following description, OFDM symbols are abbreviated as symbols.

[0062] The eight SRS ports can be numbered as SRS port 0, SRS port 1, SRS port 2, SRS port 3, SRS port 4, SRS port 5, SRS port 6, and SRS port 7 (ie, SRS port =0, 1, 2, 3, 4, 5, 6, and 7).

[0063] The present disclosure proposes probing 8 SRS ports in 2 symbols or in 4 symbols.

[0064] The first embodiment relates to the determination of cyclic shift and comb offset.

[0065] The first sub-embodiment of the first embodiment involves probing 8 SRS ports (ie, or ) in the case of determining the cyclic shift and comb offset of each SRS port.

[0066] configuration (i.e., the number of symbols used to detect 8 antenna ports is 2) or The configuration of (ie, the number of SRS ports used for SRS transmission in each symbol is 4) can configure the UE to detect 8 SRS ports in 2 symbols.

[0067] When 8 SRS ports are detected in 2 symbols, each SRS resource transmission should occupy two adjacent symbols, where the SRS transmission in each of these two symbols is sent using 4 SRS ports, e.g. =0, 1, 2, 3 and in the second symbol =4, 5, 6, 7. In this case, the SRS port 0, SRS port 1, SRS port 2, and SRS port 3 detected in the first symbol can be respectively represented as SRS port 0 (or first SRS port) in the first symbol, SRS port 1 (or second SRS port) in the first symbol, SRS port 2 (or third SRS port) in the first symbol, and SRS port 3 (or fourth SRS port) in the first symbol, while the SRS port 4, SRS port 5, SRS port 6, and SRS port 7 detected in the second symbol can be respectively represented as SRS port 0 (or first SRS port) in the second symbol, SRS port 1 (or second SRS port) in the second symbol, SRS port 2 (or third SRS port) in the second symbol, and SRS port 3 (or fourth SRS port) in the second symbol.

[0068] When configuring an SRS resource (rotate shift) and a (comb offset), the UE shall Determine each SRS port = 0, 1, 2, 3 (i.e., SRS port 0, SRS port 1, SRS port 2, and SRS port 3 in the first symbol), where is a single cyclic shift configured for the SRS resource. =6, 8 or 12 is determined by the comb size configured for SRS resources according to Table 6.4.1.4.2-1 specified in 3GPP TS 38.211 V17.2.0.

[0069] SRS Port =4, 5, 6, 7 (ie, SRS port 0, SRS port 1, SRS port 2, and SRS port 3 in the second symbol) are respectively associated with SRS port = 0, 1, 2, 3 (i.e., SRS port 0, SRS port 1, SRS port 2, and SRS port 3 in the first symbol) share the same cyclic shift value. This means that each SRS port in the second symbol (in From 0 to , i.e. from 0 to 3 in the first sub-embodiment) with the SRS port in the first symbol share the same cyclic shift value.

[0070] When configuring an SRS resource (rotate shift) and a (comb offset), the UE shall

[0071] Determine each SRS port = comb offset of 0, 1, 2, 3, where is the comb size configured for the SRS resource, is the comb offset configured for the SRS resource, and = 6, 8 or 12 is determined by the comb size configured for the SRS resource according to Table 6.4.1.4.2-1 specified in 3GPP TS38.211 V17.2.0.

[0072] SRS Port = Each of 4, 5, 6, 7 is respectively connected to the SRS port = 0, 1, 2, 3 share the same comb offset. This means that each SRS port in the second symbol (in From 0 to , i.e. from 0 to 3 in the first sub-embodiment) with the SRS port in the first symbol Share the same comb offset.

[0073] Instead, configure an SRS resource and a ,when or When the gNB can configure two SRS resources (First and second ) and two (First and second ), of which the first and first is used by the UE to determine the cyclic shift value and comb offset of each SRS port in the first symbol, and the second and second It is used by the UE to determine the cyclic shift value and comb offset of each SRS port in the second symbol. The same is configured for SRS resources (comb size). With this configuration, SRS ports 0, 1, 2, 3 in the first symbol may determine different cyclic shift values ​​and different comb offset values ​​than SRS ports 0, 1, 2, 3 in the second symbol.

[0074] The SRS ports used for SRS transmission in the first symbol and in the second symbol are associated with different UE antenna ports.There are two modes of association of SRS ports for SRS transmission with UE antenna ports.

[0075] Mode 1-1: SRS port for SRS resource transmission = 0, 1, 2, 3 (i.e., SRS ports 0, 1, 2, 3 in the first symbol) are associated with antenna ports 1000, 1001, 1002, 1003, respectively; and the SRS ports used for SRS resource transmission = 4, 5, 6, 7 (ie, SRS ports 0, 1, 2, 3 in the second symbol) are associated with antenna ports 1004, 1005, 1006, 1007, respectively.

[0076] Mode 1-2: SRS port for SRS resource transmission = 0, 1, 2, 3 (i.e., SRS ports 0, 1, 2, 3 in the first symbol) are associated with antenna ports 1000, 1001, 1004, 1005, respectively; and the SRS ports used for SRS resource transmission = 4, 5, 6, 7 (i.e., SRS ports 0, 1, 2, 3 in the second symbol) are associated with antenna ports 1002, 1003, 1006, 1007, respectively. It can be seen from mode 1-2 that, at least for partially coherent UEs, all antenna ports in the same coherent antenna group (e.g., antenna ports 1000, 1001, 1004, 1005 in the same coherent antenna group and antenna ports 1002, 1003, 1006, 1007 in the same coherent antenna group: see Figure 1 (c)) are detected in the same symbol.

[0077] A second sub-embodiment of the first embodiment relates to the case where eight SRS ports (i.e., or ), then determine the cyclic shift and comb offset.

[0078] configuration (i.e., the number of symbols used to detect 8 antenna ports is 4), or The configuration of (ie, the number of SRS ports used for SRS transmission in each symbol is 2) can configure the UE to detect 8 SRS ports in 4 symbols.

[0079] When 8 SRS ports are detected in 4 symbols, each SRS resource transmission should occupy four adjacent symbols, where the SRS transmission in each of the four symbols is sent using 2 SRS ports, e.g. =0, 1, in the second symbol =2, 3, in the third symbol =4, 5, and in the fourth symbol =6, 7. In this case, SRS port 0 and SRS port 1 detected in the first symbol can be represented as SRS port 0 (or the first SRS port) in the first symbol and SRS port 1 (or the second SRS port) in the first symbol; SRS port 2 and SRS port 3 detected in the second symbol can be represented as SRS port 0 in the second symbol (or the first SRS port) and SRS port 1 (or the second SRS port) in the second symbol; SRS port 4 and SRS port 5 detected in the third symbol can be represented as SRS port 0 (or the first SRS port) in the third symbol and SRS port 1 (or the second SRS port) in the third symbol; and SRS port 6 and SRS port 7 detected in the fourth symbol can be represented as SRS port 0 (or the first SRS port) in the fourth symbol and SRS port 1 (or the second SRS port) in the fourth symbol.

[0080] When configuring an SRS resource (rotate shift) and a (comb offset), the UE shall Determine each SRS port = 0, 1 (i.e., SRS ports 0, 1 in the first symbol), where ,in is the cyclic shift configured for the SRS resource, = 6, 8 or 12 is determined by the comb size configured for the SRS resource according to Table 6.4.1.4.2-1 specified in 3GPP TS38.211 V17.2.0.

[0081] SRS Port = each of 2 and 3 (ie, each of SRS ports 0 and 1 in the second symbol), SRS port = each of 4, 5 (ie, each of SRS ports 0, 1 in the third symbol) and SRS port =6, 7 (ie, each of the SRS ports 0, 1 in the fourth symbol) are respectively associated with the SRS port = 0, 1 share the same cyclic shift value. This means that each SRS port of each of the second symbol, the third symbol, and the fourth symbol (in From 0 to , i.e. from 0 to 1 in the second sub-embodiment) and the SRS port in the first symbol share the same cyclic shift value.

[0082] When configuring an SRS resource (rotate shift) and a (comb offset), the UE shall ,in It is the comb offset configured for the SRS resource, which determines each SRS port =0,1 comb offset.

[0083] SRS Port = each of 2 and 3 (ie, each of SRS ports 0 and 1 in the second symbol), SRS port = each of 4, 5 (ie, each of SRS ports 0, 1 in the third symbol) and SRS port =6, 7 (ie, each of the SRS ports 0, 1 in the fourth symbol) are respectively associated with the SRS port = 0, 1 share the same comb offset. This means that each SRS port of each of the second symbol, the third symbol, and the fourth symbol (in From 0 to , i.e. from 0 to 1 in the second sub-embodiment) and the SRS port in the first symbol Share the same comb offset.

[0084] Instead, configure an SRS resource and a ,when or When the gNB can configure four SRS resources (First ,second ,third and the fourth ) and four (First ,second ,third and the fourth ), of which the first and first is used by the UE to determine the cyclic shift value and comb offset of each SRS port in the first symbol, and the second and second is used by the UE to determine the cyclic shift value and comb offset of each SRS port in the second symbol, and the third and the third is used by the UE to determine the cyclic shift value and comb offset of each SRS port in the third symbol, and the fourth and the fourth It is used by the UE to determine the cyclic shift value and comb offset of each SRS port in the fourth symbol. The same is configured for SRS resources (comb size). With this configuration, SRS ports 0 and 1 of each of the first symbol, the second symbol, the third symbol, and the fourth symbol may determine different cyclic shift values ​​and different comb offset values.

[0085] The SRS port for SRS transmission in each symbol (each of the first symbol, the second symbol, the third symbol, and the fourth symbol) is associated with a different UE antenna port. There are two modes of association of the SRS port for SRS transmission with the UE antenna port.

[0086] Mode 2-1: SRS port for SRS resource transmission = 0, 1 (i.e., SRS ports 0, 1 in the first symbol) are associated with antenna ports 1000, 1001, respectively; SRS ports used for SRS resource transmission = 2, 3 (i.e., SRS ports 0, 1 in the second symbol) are associated with antenna ports 1002, 1003, respectively; SRS ports used for SRS resource transmission =4, 5 (ie, SRS ports 0, 1 in the third symbol) are associated with antenna ports 1004, 1005, respectively; and the SRS ports used for SRS resource transmission =6, 7 (ie, SRS ports 0, 1 in the fourth symbol) are associated with antenna ports 1006, 1007, respectively.

[0087] Mode 2-2: SRS port for SRS resource transmission = 0, 1 (i.e., SRS ports 0, 1 in the first symbol) are associated with antenna ports 1000, 1004, respectively; SRS ports used for SRS resource transmission = 2, 3 (i.e., SRS ports 0, 1 in the second symbol) are associated with antenna ports 1001, 1005, respectively; SRS ports used for SRS resource transmission =4, 5 (ie, SRS ports 0, 1 in the third symbol) are associated with antenna ports 1002, 1006, respectively; and the SRS ports used for SRS resource transmission =6, 7 (i.e., SRS ports 0, 1 in the fourth symbol) are associated with antenna ports 1003, 1007, respectively. It can be seen from mode 2-2 of at least partially coherent UEs that all antenna ports in the same coherent antenna group (e.g., antenna ports 1000, 1004 in the same coherent antenna group, antenna ports 1001, 1005 in the same coherent antenna group, antenna ports 1002, 1006 in the same coherent antenna group, and antenna ports 1003, 1007 in the same coherent antenna group: see FIG. 1( d )) are detected in the same symbol.

[0088] The second embodiment involves frequency hopping and repetition for probing 8 SRS ports in multiple (eg, 2 or 4) symbols.

[0089] Since each SRS resource transmission occupies more than one symbol (eg, 2 symbols or 4 symbols), if frequency hopping and / or repetition are further configured for the SRS resource, frequency hopping and repetition should be performed on all symbols (eg, 2 symbols or 4 symbols) for each SRS resource.

[0090] This means that, for frequency hopping, if the SRS resource transmission occupies 2 symbols, the 2 symbols are hopped together; and if the SRS resource transmission occupies 4 symbols, the 4 symbols are hopped together.

[0091] Figure 2(a) illustrates the use of two symbols ( or ) is an example of frequency hopping of SRS resource transmission. 2 symbols hop together.

[0092] The SRS port in the first symbol and the SRS port in the second symbol share the same comb offset and the same cyclic shift. This means that SRS port 0 (i.e., SRS port 0 in the first symbol) and SRS port 4 (i.e., SRS port 0 in the second symbol) have the same comb offset and the same cyclic shift; SRS port 1 (i.e., SRS port 1 in the first symbol) and SRS port 5 (i.e., SRS port 1 in the second symbol) have the same comb offset and the same cyclic shift; SRS port 2 (i.e., SRS port 2 in the first symbol) and SRS port 6 (i.e., SRS port 2 in the second symbol) have the same comb offset and the same cyclic shift; and SRS port 3 (i.e., SRS port 3 in the first symbol and SRS port 7 (i.e., SRS port 3 in the second symbol) have the same comb offset and the same cyclic shift.

[0093] On the other hand, the SRS ports of the two symbols are associated with different antenna ports. Specifically, SRS port 0 (i.e., SRS port 0 in the first symbol) and SRS port 4 (i.e., SRS port 0 in the second symbol) are associated with different antenna ports 1000 and 1002, respectively; SRS port 1 (i.e., SRS port 1 in the first symbol) and SRS port 5 (i.e., SRS port 1 in the second symbol) are associated with different antenna ports 1001 and 1003, respectively; SRS port 2 (i.e., SRS port 2 in the first symbol) and SRS port 6 (i.e., SRS port 2 in the second symbol) are associated with different antenna ports 1004 and 1006, respectively; and SRS port 3 (i.e., SRS port 3 in the first symbol) and SRS port 7 (i.e., SRS port 3 in the second symbol) are associated with different antenna ports 1005 and 1007, respectively.

[0094] As can be seen from Figure 2 (a), each transition takes symbols, and 8 symbols are required for all 4 transitions (2 symbols / transition * 4 transitions). In each of the four transitions, All eight SRS ports of the same SRS resource are detected in two adjacent symbols.

[0095] To ensure that the UE obtains the correct frequency position index when frequency hopping is further configured for SRS resources, considering that each SRS transmission contains more than one symbol (e.g. = 2 or 4 symbols), the SRS transmission counter should be increased .

[0096] According to the present disclosure, for aperiodic SRS resources, , and for periodic and semi-persistent SRS resources, ,

[0097] in, ,

[0098] is the repetition factor configured for the SRS resource,

[0099] and is the periodicity in the time slot and the time slot offset configured for periodic and semi-persistent SRS resources,

[0100] consecutive OFDM symbols via the RRC parameter is configured for SRS resources,

[0101] is the subcarrier spacing configuration The number of time slots in a frame,

[0102] is the frame number, and

[0103] is the timeslot number within the frame.

[0104] FIG. 2( b ) illustrates an example of repetition of SRS resource transmission occupying 2 symbols.

[0105] The configuration of the comb offset, cyclic shift, and association of the SRS ports with the antenna ports in FIG2(b) are the same as those in FIG2(a).

[0106] As can be seen from Figure 2(b), each repeated occupancy symbols, and for all 4 repetitions 8 symbols are needed (2 symbols / repetition * 4 repetitions).

[0107] When the SRS resource is configured with repetition, the number of symbols used for SRS resource transmission in a time slot (e.g. ) should be multiples of.

[0108] In particular, for or , m=2, 4, 8, 10, 12, 14; and for or , m=4,8,12.

[0109] The third embodiment relates to power allocation for SRS transmission.

[0110] In the case where all antenna ports transmit in one symbol, the UE divides the number of antenna ports in the serving cell equally across the configured antenna ports for SRS. Carrier Activities of UL BWP The transmission power on The linear value of That is, if all 8 antenna ports are transmitted in one symbol, the transmit power of each SRS port is .

[0111] When an SRS resource is configured with more than one symbol (e.g. When there are 8 SRS ports on a symbol (or 4 symbols), the UE shall Configured antenna ports divide the serving cell equally Carrier Activities of UL BWP The transmission power on The linear value of , which for each SRS port is This enables power domain gains for coverage enhancement.

[0112] Specifically, when 8 antenna ports are detected in 2 symbols, the transmit power of each SRS port is , which is the same as if one symbol is used to detect all 8 antenna ports. In comparison, it is a 3dB power domain gain.

[0113] Similarly, when 8 antenna ports are detected in 4 symbols, the transmit power of each SRS port is , which is the same as the case where all 8 antenna ports are detected in one symbol In comparison, it is a 6dB power domain gain.

[0114] Figure 3 300 is a schematic flow chart illustrating an embodiment of a method 300 according to the present application. In some embodiments, the method 300 is performed by a device such as a remote unit. In some embodiments, the method 300 can be performed by a processor such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc. that executes program code.

[0115] Method 300 may include receiving at 302 a The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is and a configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and 304 determining a cyclic shift value for each of the eight SRS ports in each of the OFDM symbols of an SRS resource transmission for the SRS resource according to the configuration. and comb offset .

[0116] In some embodiments, this configuration is performed by directly configuring the number of OFDM symbols. The number of OFDM symbols is 2 or 4. Alternatively, the configuration is performed by configuring the number of SRS ports in each OFDM symbol. The number of SRS ports is equal to and is either 4 or 2.

[0117] In some embodiments, the method further includes: The antenna ports evenly divide the serving cell Carrier Activities of UL BWP The transmission power on The linear value of ,in .

[0118] In some embodiments, when a single cyclic shift and a single comb offset are configured for an SRS resource, SRS ports 0, ..., Each of the shares the same cyclic shift value and the same comb offset .

[0119] if , then according to Determine the cyclic shift values ​​SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is a single cyclic shift configured for the SRS resource.

[0120] if , then according to Determine the comb offset of SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is the comb size configured for the SRS resource, Is a single comb offset configured for an SRS resource.

[0121] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) of the cyclic shift values, where ,in is a single cyclic shift configured for the SRS resource.

[0122] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) comb offset, where Is a single comb offset configured for an SRS resource.

[0123] In some embodiments, SRS ports 0, ..., Associated with different antenna ports.

[0124] In some embodiments, the method further comprises reporting the partial coherence capability with multiple antenna groups, and all antenna ports within the same antenna group are associated with SRS ports of SRS resource transmissions in the same OFDM symbol.

[0125] In some embodiments, when the SRS resource is further configured with frequency hopping, the number of SRS transmissions is based on the frequency of the aperiodic SRS resource. or periodic and semi-persistent SRS To count.

[0126] In some embodiments, when the SRS resource is also configured with repetition, the number of OFDM symbols used for SRS transmission is multiples of.

[0127] Figure 4 4 is a schematic flow chart illustrating another embodiment of a method 400 according to the present application. In some embodiments, the method 400 is performed by a device such as a base station unit. In some embodiments, the method 400 can be performed by a processor such as a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, an FPGA, etc. that executes program code.

[0128] Method 400 may include 402 sending a The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is and a configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and 404 determining a cyclic shift value for each of the eight SRS ports in each of the OFDM symbols of an SRS resource transmission for the SRS resource according to the configuration. and comb offset .

[0129] In some embodiments, this configuration is performed by directly configuring the number of OFDM symbols. The number of OFDM symbols is 2 or 4. Alternatively, the configuration is performed by configuring the number of SRS ports in each OFDM symbol. The number of SRS ports is equal to and is either 4 or 2.

[0130] In some embodiments, the method further includes: The antenna ports evenly divide the serving cell Carrier Activities of UL BWP The transmission power on The linear value of ,in .

[0131] In some embodiments, when a single cyclic shift and a single comb offset are configured for an SRS resource, SRS ports 0, ..., Each of the shares the same cyclic shift value and the same comb offset .

[0132] if , then according to Determine the cyclic shift values ​​SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is a single cyclic shift configured for the SRS resource.

[0133] if , then according to Determine the comb offset of SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is the comb size configured for the SRS resource, Is a single comb offset configured for an SRS resource.

[0134] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) of the cyclic shift values, where ,in is a single cyclic shift configured for the SRS resource.

[0135] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) comb offset, where Is a single comb offset configured for an SRS resource.

[0136] In some embodiments, SRS ports 0, ..., Associated with different antenna ports.

[0137] In some embodiments, the method further includes receiving a partially coherent capability with multiple antenna groups, and all antenna ports within the same antenna group are associated with SRS ports of SRS resource transmissions in the same OFDM symbol.

[0138] In some embodiments, when the SRS resource is further configured with frequency hopping, the number of SRS transmissions is based on the frequency of the aperiodic SRS resource. or periodic and semi-persistent SRS To count.

[0139] In some embodiments, when the SRS resource is also configured with repetition, the number of OFDM symbols used for SRS transmission is multiples of.

[0140] Figure 5 is a schematic block diagram illustrating an apparatus according to one embodiment.

[0141] refer to Figure 5 , the UE (ie, remote unit) includes a processor, a memory, and a transceiver. The processor is implemented in Figure 3 The functions, processes and / or methods proposed in.

[0142] A user equipment (UE) includes a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to receive, via the transceiver, a The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is A configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and determining a cyclic shift value for each of eight SRS ports in each of an OFDM symbol for an SRS resource transmission of the SRS resource according to the configuration and comb offset .

[0143] In some embodiments, this configuration is performed by directly configuring the number of OFDM symbols. The number of OFDM symbols is 2 or 4. Alternatively, the configuration is performed by configuring the number of SRS ports in each OFDM symbol. The number of SRS ports is equal to and is either 4 or 2.

[0144] In some embodiments, the processor is further configured to transmit the SRS across the OFDM symbol. The antenna ports evenly divide the serving cell Carrier Activities of UL BWP The transmission power on The linear value of ,in .

[0145] In some embodiments, when a single cyclic shift and a single comb offset are configured for an SRS resource, SRS ports 0, ..., Each of the shares the same cyclic shift value and the same comb offset .

[0146] if , then according to Determine the cyclic shift values ​​SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is a single cyclic shift configured for the SRS resource.

[0147] if , then according to Determine the comb offset of SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is the comb size configured for the SRS resource, Is a single comb offset configured for an SRS resource.

[0148] if , then according to determining the SRS ports 0, 1 in the first OFDM symbol, the second OFDM symbol, the third OFDM symbol and the fourth OFDM symbol ( =0, 1) of the cyclic shift values, where ,in is a single cyclic shift configured for the SRS resource.

[0149] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) comb offset, where Is a single comb offset configured for an SRS resource.

[0150] In some embodiments, SRS ports 0, ..., Associated with different antenna ports.

[0151] In some embodiments, the method further comprises reporting the partial coherence capability with multiple antenna groups, and all antenna ports within the same antenna group are associated with SRS ports of SRS resource transmissions in the same OFDM symbol.

[0152] In some embodiments, when the SRS resource is also configured with frequency hopping, the number of SRS transmissions is based on the frequency of the aperiodic SRS resource. or periodic and semi-persistent SRS To count.

[0153] In some embodiments, when the SRS resource is also configured with repetition, the number of OFDM symbols used for SRS transmission is multiples of.

[0154] refer to Figure 5 , the gNB (i.e., base station unit) includes a processor, a memory, and a transceiver. The processor is implemented in Figure 4 The functions, processes and / or methods proposed in.

[0155] A base station unit comprises: a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to send, via the transceiver, a signal for providing a The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is and a configuration for configuring one or more cyclic shifts and one or more comb offsets for an SRS resource; and 404 determining a cyclic shift value for each of the eight SRS ports in each of the OFDM symbols of an SRS resource transmission for the SRS resource according to the configuration. and comb offset .

[0156] In some embodiments, this configuration is performed by directly configuring the number of OFDM symbols. The number of OFDM symbols is 2 or 4. Alternatively, the configuration is performed by configuring the number of SRS ports in each OFDM symbol. The number of SRS ports is equal to and is either 4 or 2.

[0157] In some embodiments, the processor is further configured to transmit the SRS across the OFDM symbol. The antenna ports evenly divide the serving cell Carrier Activities of UL BWP The transmission power on The linear value of ,in .

[0158] In some embodiments, when a single cyclic shift and a single comb offset are configured for an SRS resource, SRS ports 0, ..., Each of the shares the same cyclic shift value and the same comb offset .

[0159] if , then according to Determine the cyclic shift values ​​SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is a single cyclic shift configured for the SRS resource.

[0160] if , then according to Determine the comb offset of SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is the comb size configured for the SRS resource, Is a single comb offset configured for an SRS resource.

[0161] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) of the cyclic shift values, where ,in is a single cyclic shift configured for the SRS resource.

[0162] if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) comb offset, where Is a single comb offset configured for an SRS resource.

[0163] In some embodiments, SRS ports 0, ..., Associated with different antenna ports.

[0164] In some embodiments, the method further includes receiving a partially coherent capability with multiple antenna groups, and all antenna ports within the same antenna group are associated with SRS ports of SRS resource transmissions in the same OFDM symbol.

[0165] In some embodiments, when the SRS resource is further configured with frequency hopping, the number of SRS transmissions is based on the frequency of the aperiodic SRS resource. or periodic and semi-persistent SRS To count.

[0166] In some embodiments, when the SRS resource is also configured with repetition, the number of OFDM symbols used for SRS transmission is multiples of.

[0167] The layers of the radio interface protocol may be implemented by a processor. The memory is connected to the processor to store various information for driving the processor. The transceiver is connected to the processor to send and / or receive radio signals. Needless to say, the transceiver may be implemented as a transmitter for sending radio signals and a receiver for receiving radio signals.

[0168] The memory may be located inside or outside the processor and connected to the processor through various well-known means.

[0169] In the above-described embodiments, the components and features of the embodiments are combined in a predetermined form. Unless otherwise clearly stated, each component or feature should be considered as an option. Each component or feature can be implemented as not associated with other components or features. In addition, the embodiments can be configured by associating some components and / or features. The order of the operations described in the embodiments can be changed. Some components or features of any embodiment can be included in another embodiment, or replaced with components and features corresponding to another embodiment. It is obvious that claims that are not clearly cited in the claims are combined to form embodiments or are included in new claims.

[0170] The embodiments may be implemented by hardware, firmware, software, or a combination thereof. In the case of being implemented by hardware, according to hardware implementation, the exemplary embodiments described herein may be implemented by using one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.

[0171] Embodiments may be practiced in other specific forms. The described embodiments should be considered in all respects to be illustrative only and not restrictive. Therefore, the scope of the present invention is indicated by the appended claims rather than the foregoing description. All changes falling within the equivalent meaning and scope of the claims are included within the scope of the claims.

Claims

1. A user equipment (UE), comprising: Transceiver; as well as a processor coupled to the transceiver, wherein the processor is configured to: The transceiver receives a The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is and a configuration for configuring one or more cyclic shifts and one or more comb offsets for the SRS resource; and Determine a cyclic shift value for each of eight SRS ports in each of the OFDM symbols for the one SRS resource transmission of the SRS resource according to the configuration and comb offset .

2. The UE according to claim 1, wherein: The configuration is performed by directly configuring the number of OFDM symbols The number of OFDM symbols is 2 or 4.

3. The UE according to claim 1, wherein: The configuration is performed by configuring the number of SRS ports in each OFDM symbol. The number of SRS ports is equal to and is either 4 or 2.

4. The UE according to claim 1, wherein: The processor is further configured to transmit the SRS across the OFDM symbol. The antenna ports evenly divide the serving cell Carrier Activities of UL BWP The transmission power on The linear value of ,in .

5. The UE according to claim 1, wherein: When a single cyclic shift and a single comb offset are configured for the SRS resource, SRS ports 0, ..., Each of the shares the same cyclic shift value and the same comb offset .

6. The UE according to claim 5, wherein: if , then according to Determine the cyclic shift values ​​SRS ports 0, 1, 2, 3 in the first OFDM symbol and in the second OFDM symbol ( =0, 1, 2, 3), where is the single cyclic shift configured for the SRS resource.

7. The UE according to claim 5, wherein: if , then according to Determine the comb offset of SRS ports 0, 1, 2, 3 in the first OFDM symbol and the second OFDM symbol ( =0, 1, 2, 3), where is the comb size configured for the SRS resource, is the single comb offset configured for the SRS resource.

8. The UE according to claim 5, wherein: if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1), wherein ,in is the single cyclic shift configured for the SRS resource.

9. The UE according to claim 5, wherein: if , then according to Determine SRS ports 0, 1 in the first OFDM symbol, in the second OFDM symbol, in the third OFDM symbol, and in the fourth OFDM symbol ( =0, 1) of the comb offset, where is the single comb offset configured for the SRS resource.

10. The UE according to claim 1, wherein: SRS ports 0, ..., Associated with different antenna ports.

11. The UE according to claim 1, wherein: The processor is further configured to report partial coherence capabilities with multiple antenna groups, and All antenna ports in the same antenna group are associated with the SRS port of the SRS resource transmission in the same OFDM symbol.

12. The UE according to claim 1, wherein: When the SRS resource is also configured with frequency hopping, the number of SRS transmissions is based on the frequency of the aperiodic SRS resource. or periodic and semi-persistent SRS Come count, in, , is the repetition factor configured for the SRS resource, and is the periodicity in the time slot and the time slot offset configured for periodic and semi-persistent SRS resources, consecutive OFDM symbols via the RRC parameter is configured for the SRS resource, is the subcarrier spacing configuration The number of time slots in a frame, is the frame number, and is the timeslot number within the frame.

13. The UE according to claim 1, wherein: When the SRS resource is further configured with repetition, the number of OFDM symbols used for the SRS transmission is multiples of.

14. A method performed at a user equipment (UE), comprising: Receive for The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is and a configuration for configuring one or more cyclic shifts and one or more comb offsets for the SRS resource; as well as Determine a cyclic shift value for each of eight SRS ports in each of the OFDM symbols used for the one SRS resource transmission of the SRS resource according to the configuration and comb offset .

15. A base station unit, comprising: Transceiver; as well as a processor coupled to the transceiver, wherein the processor is configured to: The transceiver is used to transmit The number of OFDM symbols detected by all 8 antenna ports for one SRS resource transmission is and a configuration for configuring one or more cyclic shifts and one or more comb offsets for the SRS resource; as well as Determine a cyclic shift value for each of eight SRS ports in each of the OFDM symbols for the one SRS resource transmission of the SRS resource according to the configuration and comb offset .

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