SYSTEM AND METHOD FOR SOUNDING REFERENCE SIGNAL TRANSMISSION - Patent application

Abstract

A system and method for sounding reference signal (SRS) transmission are presented. A wireless communication device may receive configuration information for SRS transmission from a wireless communication node. The wireless communication device may transmit the SRS to the wireless communication node according to the configuration information. In one embodiment, the method includes, by the wireless communication device, determining an offset parameter (n offset ) and partial frequency coefficients (P F ) determining a starting location in the frequency domain for transmitting the SRS as a partial frequency SRS transmission.

Description

[Technical field]

[0001] TECHNICAL FIELD This disclosure relates generally to wireless communications, including, but not limited to, systems and methods for Sounding Reference Signal (SRS) transmission. [Background technology]

[0002] The standardization body, the 3rd Generation Partnership Project (3GPP®), is currently defining a new radio interface called 5G New Radio (5G NR) and the Next Generation Packet Core Network (NG-CN or NGC). 5G NR has three main components: 5G Access Network (5G-AN), 5G Core Network (5GC), and User Equipment (UE). To facilitate the enablement of different data services and requirements, the elements of 5GC, also called network functions, have been simplified, some of them software-based and some hardware-based, so that they can be adapted as needed. Summary of the Invention [Means for solving the problem]

[0003] The exemplary embodiments disclosed herein aim to solve one or more problems associated with the prior art and provide additional features that will be readily apparent by reference to the following detailed description in conjunction with the accompanying drawings. According to various embodiments, exemplary systems, methods, devices, and computer program products are disclosed herein. However, these embodiments are presented by way of example and not limitation, and it will be apparent to those skilled in the art upon reading this disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of the present disclosure.

[0004] At least one aspect relates to a system, method, apparatus, or computer-readable medium, in which a wireless communication device can receive configuration information for a sounding reference signal (SRS) transmission from a wireless communication node, and the wireless communication device can transmit the SRS to the wireless communication node according to the configuration information.

[0005] In some embodiments, the wireless communication device may include an offset parameter (n offset ) and partial frequency coefficients (P F ) may determine a starting position in the frequency domain for transmitting the SRS as a partial frequency SRS transmission. In some embodiments, the wireless communication device may offset and P F In some embodiments, the wireless communication device may determine the starting position as a function of the ratio of P F In some embodiments, the wireless communication device may determine the value of P by receiving, via higher layer signaling, a configuration indicating multiple possible values. F In some embodiments, the wireless communication device may determine the value of P from a plurality of candidate values. F By receiving downlink control information (DCI) indicating the value of P F The value of may be determined.

[0006] In some embodiments, the wireless communication device is F In the absence of higher layer signaling providing one or more candidate values ​​for P F In some embodiments, the wireless communication device may determine that {0, 1, . . . , P F -1} from a given list offset In some embodiments, the wireless communication device may determine the value of n offset In some embodiments, the wireless communication device may determine the value of n by receiving, via higher layer signaling, a configuration indicating a number of possible values. offsetIn some embodiments, the wireless communication device may determine a value of n from a plurality of candidate values. offset by receiving Downlink Control Information (DCI) indicating the value of offset In some embodiments, the wireless communication device may determine a value of n offset In the absence of higher layer signaling providing one or more candidate values ​​for offset may be determined to have a value of 0.

[0007] In some embodiments, the wireless communication device may select n hopping patterns at a symbol level, slot level, resource level, resource set level, or at a granularity of a frequency hopping period in the time domain. offset and the hopping pattern may be determined based on at least one value of n offset = ( n' offset +k')modP F In some embodiments, n' is represented by offset may be an offset component configured via radio resource configuration (RRC) signaling. In some embodiments, k′ may be a hopping sequence value. In some embodiments, k′ may be a hopping sequence value. F When P is equal to 2, k may vary according to a hopping sequence of {0,1}. F When P is equal to 3, k may vary according to a hopping sequence of {0,2,1}. F When P is equal to 4, k may vary according to a hopping sequence of {0, 2, 1, 3}. F When n is equal to 8, it may vary according to a hopping sequence of {0, 4, 2, 6, 1, 5, 3, 7}. offset If the hopping pattern associated with k′ is at the granularity of a frequency hopping period in the time domain, then a change in k′ may occur after the SRS transmission has gone through a full round of hopping in the frequency domain.

[0008] In some embodiments, the wireless communication device may transmit a report message to the wireless communication node prior to receiving the configuration information. In some embodiments, the report message may indicate the capabilities of the wireless communication device. In some embodiments, the capabilities may include supporting a trigger offset extension for determining an SRS transmission slot according to a reference slot at which downlink control information (DCI) triggering the SRS is received. In some embodiments, the trigger offset extension may be used. If the trigger offset extension is used, the report message may include an indication of whether the wireless communication device supports a defined trigger offset configured with at least one non-zero value. In some embodiments, the report message may exclude any indication of support for a defined trigger offset configured with at least one non-zero value. If the report message excludes any indication of support for a defined trigger offset configured with at least one non-zero value, the defined trigger offset may be configured using a zero value. In some embodiments, the report message may include an indication of support for a defined trigger offset configured with at least one non-zero value. If the report message includes an indication of support for a defined trigger offset configured with at least one non-zero value, the defined trigger offset may be configured using a non-zero value. In some embodiments, the reporting message may include a maximum number of slot offsets (t) for the resource set. In some embodiments, the reporting message may include a maximum value of t for the resource set. In some embodiments, the SRS resource set may be transmitted in the (t+1)th available slot relative to the reference slot.

[0009] In some embodiments, the downlink control information (DCI) may support options of using an unused field and an option of using a dedicated field to indicate at least one value of a slot offset (t) of a resource set. In some embodiments, if the dedicated field is configured to indicate at least one value of t, the wireless communication device may ignore the unused field. In some embodiments, the wireless communication device may ignore the dedicated field if the unused field is configured to indicate at least one value of t. In some embodiments, the report message may include at least one of a maximum number of configured resource sets (N_max) or a number of values ​​supported for the number of resource sets (N) configured by the wireless communication device, where N≦N_max. In some embodiments, the report message may include a maximum number of repeated symbols for which the wireless communication device can maintain phase continuity. In some embodiments, the report message may include a fractional frequency coefficient (P F ), maximum comb value, or maximum power boosting value.

[0010] In some embodiments, a wireless communication device may be expected to receive the same transmit power control (TPC) command between SRS repetition symbols. In some embodiments, a wireless communication device may be expected to receive the same transmit power control (TPC) command between SRS resources in the same SRS resource set. In some embodiments, a wireless communication device may be expected to receive the same transmit power control (TPC) command between different SRS resource sets if the usage parameter of the wireless communication device is configured via higher layer signaling as "antennaSwitching". In some embodiments, the configuration information may be received from the wireless communication node via radio resource control (RRC) signaling, medium access control control element (MAC CE) signaling, or downlink control information (DCI) transmission. In some embodiments, the configuration information may include an indication of the total number of OFDM symbols in one SRS resource (N_symbol) and a repetition factor (R), where the ratio of N_symbol to R provides an integer value. In some embodiments, the configuration information may be received from the wireless communication node via radio resource control (RRC) signaling. In some embodiments, the RRC signaling may include an indicator to associate one of a plurality of transmission switching configurations with at least one SRS resource or set of SRS resources.

[0011] At least one aspect relates to a system, a method, an apparatus, or a computer-readable medium, wherein a wireless communication node transmits configuration information for a sounding reference signal (SRS) transmission to a wireless communication device, and the wireless communication node receives the SRS from the wireless communication device according to the configuration information.

[0012] In some embodiments, the frequency domain starting position k0 (pi) may be defined / constructed / determined according to (or based on) the following:

number

number

[0013] Various exemplary embodiments of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and merely depict exemplary embodiments of the present solution to facilitate the reader's understanding of the present solution. Thus, the drawings should not be considered as limiting the breadth, scope, or applicability of the present solution. Please note that for clarity and ease of illustration, the drawings are not necessarily drawn to scale.

[0014] [Figure 1] FIG. 1 illustrates an example cellular communication network in which the techniques disclosed herein may be implemented according to embodiments of the present disclosure.

[0015] [Diagram 2] FIG. 2 illustrates a block diagram of an example base station and user equipment device in accordance with some embodiments of the disclosure.

[0016] [Diagram 3] FIG. 3 shows a table with example values ​​for configuring an offset kl′ 0ffset for a sounding reference signal according to some embodiments of the present disclosure.

[0017] [Figure 4] FIG. 4 illustrates a flow diagram of an exemplary method for sounding reference signal transmission according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] (1. Mobile Communications Technology and the Environment) FIG. 1 illustrates an example wireless communication network and / or system 100 in which the techniques disclosed herein according to embodiments of the present disclosure may be implemented. In the following description, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as "network 100." Such an example network 100 includes a base station 102 (hereinafter "BS 102"; also referred to as a wireless communication node) and a user equipment device 104 (hereinafter "UE 104"; also referred to as a wireless communication device) that can communicate with each other via a communication link 110 (e.g., a wireless communication channel), and clusters of cells 126, 130, 132, 134, 136, 138, and 140 that overlap a geographic region 101. In FIG. 1, the BS 102 and the UE 104 are contained within the respective geographic boundaries of the cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating in its assigned bandwidth to provide adequate wireless coverage to intended users.

[0019] For example, the BS 102 may operate in an assigned channel transmission bandwidth to provide adequate coverage to the UE 104. The BS 102 and the UE 104 may communicate via a downlink radio frame 118 and an uplink radio frame 124, respectively. Each radio frame 118 / 124 may be further divided into subframes 120 / 127 that may include data symbols 122 / 128. In this disclosure, the BS 102 and the UE 104 are generally described herein as non-limiting examples of "communication nodes" capable of implementing the methods disclosed herein. Such communication nodes may be capable of wireless and / or wired communication in accordance with various embodiments of the present solution.

[0020] 2 illustrates a block diagram of an exemplary wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM / OFDMA signals) in accordance with some embodiments of the present solution. System 200 may include components and elements configured to support known or conventional operational features that need not be described in detail herein. In an exemplary embodiment, system 200 may be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment, such as wireless communication environment 100 of FIG. 1, as described above.

[0021] The system 200 generally includes a base station 202 (hereinafter "BS 202") and a user equipment device 204 (hereinafter "UE 204"). The BS 202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each of which is coupled and interconnected with each other as needed via a data communication bus 220. The UE 204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each of which is coupled and interconnected with each other as needed via a data communication bus 240. The BS 202 communicates with the UE 204 over a communication channel 250, which may be any wireless channel or other medium suitable for the transmission of data as described herein.

[0022] As will be appreciated by those skilled in the art, system 200 may further include any number of modules other than those shown in FIG. 2. Those skilled in the art will appreciate that the various exemplary blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein may be implemented in hardware, computer readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, the various exemplary components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software may depend on the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a manner suitable for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.

[0023] According to some embodiments, the UE transceiver 230 may be referred to herein as an "uplink" transceiver 230, which includes a radio frequency (RF) transmitter and an RF receiver, each with circuitry coupled to an antenna 232. Alternatively, a duplexing switch (not shown) may couple the uplink transmitter or receiver to the uplink antenna in a time-duplexing manner. Similarly, according to some embodiments, the BS transceiver 210 may be referred to herein as a "downlink" transceiver 210, which includes an RF transmitter and an RF receiver, each with circuitry coupled to an antenna 212. Alternatively, a downlink duplexing switch may couple the downlink transmitter or receiver to the downlink antenna 212 in a time-duplexing manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time such that the downlink transmitter is coupled to the downlink antenna 212 at the same time that the uplink receiving circuitry is coupled to the uplink antenna 232 for receiving transmissions over the wireless transmission link 250. Conversely, the operation of the two transceivers 210 and 230 may be coordinated in time such that the uplink transmitter is coupled to the uplink antenna 232 at the same time that the downlink receiver is coupled to the downlink antenna 212 for receiving transmissions over the wireless transmission link 250. In some embodiments, there is a truncated time synchronization with a minimum guard time between changes in both directions.

[0024] The UE transceiver 230 and the base station transceiver 210 are configured to communicate over a wireless data communication link 250 and cooperate with a suitably configured RF antenna arrangement 212 / 232 capable of supporting a particular wireless communication protocol and modulation scheme. In some exemplary embodiments, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and the emerging 5G standard. However, it will be understood that the present disclosure is not necessarily limited to application to a particular standard and associated protocol. Rather, the UE transceiver 230 and the base station transceiver 210 may be configured to support alternative or additional wireless data communication protocols, including future standards or variants thereof.

[0025] According to various embodiments, the BS 202 may be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femto station, or a pico station. In some embodiments, the UE 204 may be embodied in various types of user devices, such as a mobile phone, a smartphone, a personal digital assistant (PDA), a tablet, a laptop computer, a wearable computing device, etc. The processor modules 214 and 236 may be implemented or realized using a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. Thus, the processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, etc. The processor may also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other such configuration.

[0026] Furthermore, the steps of the methods or algorithms described in connection with the embodiments disclosed herein may be embodied directly in hardware, firmware, software modules executed by the processor modules 214 and 236, or any practical combination thereof. The memory modules 216 and 234 may be realized as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. In this regard, the memory modules 216 and 234 may be coupled to the processor modules 210 and 230, respectively, such that the processor modules 210 and 230 can read information from and write information to the memory modules 216 and 234, respectively. Furthermore, the memory modules 216 and 234 may be integrated into the respective processor modules 210 and 230. In some embodiments, each of the memory modules 216 and 234 may include a cache memory for storing temporary variables or other intermediate information during execution of instructions executed by the processor modules 210 and 230, respectively. Each of the memory modules 216 and 234 may also include non-volatile memory for storing instructions executed by the processor modules 210 and 230, respectively.

[0027] The network communications module 218 generally represents hardware, software, firmware, processing logic, and / or other components of the base station 202 that enable bidirectional communications between the base station transceiver 210 and other network components and communication nodes configured to communicate with the base station 202. For example, the network communications module 218 may be configured to support Internet or WiMAX traffic. In a typical arrangement, without limitation, the network communications module 218 provides an 802.3 Ethernet interface so that the base station transceiver 210 can communicate with a conventional Ethernet-based computer network. In this manner, the network communications module 218 may include a physical interface for connecting to a computer network (e.g., a Mobile Switching Center (MSC)). The terms "configured for," "configured to," and conjugations thereof, as used herein with respect to a specified operation or function, refer to a device, component, circuit, structure, machine, signal, etc. that is physically configured, programmed, formatted, and / or arranged to perform the specified operation or function.

[0028] The Open Systems Interconnection (OSI) model (referred to herein as the "Open Systems Interconnection Model") is a conceptual and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) that are open to interconnection and communication with other systems. The model is divided into seven subcomponents or layers, each of which represents a conceptual collection of services provided to the layers above and below it. The OSI model also defines logical networks, effectively describing computer packet transfers by using different layer protocols. The OSI model is sometimes referred to as the seven-layer OSI model or seven-layer model. In some embodiments, the first layer may be the physical layer. In some embodiments, the second layer may be the medium access control (MAC) layer. In some embodiments, the third layer may be the radio link control (RLC) layer. In some embodiments, the fourth layer may be the packet data convergence protocol (PDCP) layer. In some embodiments, the fifth layer may be the radio resource control (RRC) layer. In some embodiments, the sixth layer may be a non-access stratum (NAS) layer or an Internet Protocol (IP) layer, and the seventh layer is another layer.

[0029] In order to enable those skilled in the art to make and use the present solution, various exemplary embodiments of the present solution are described below with reference to the accompanying drawings. As will be apparent to those skilled in the art, after reading this disclosure, various modifications or changes to the examples described herein can be made without departing from the scope of the present solution. Thus, the present solution is not limited to the exemplary embodiments and applications described and illustrated herein. Furthermore, the specific order or hierarchy of steps in the methods disclosed herein is merely an example approach. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be rearranged while remaining within the scope of the present solution. Thus, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or operations in a sample order, and that the present solution is not limited to the specific order or hierarchy presented, unless otherwise specified.

[0030] 2. Systems and methods for reporting channel state information In some systems (e.g., Rel-17 new radio (NR), next generation (NG) systems, and / or other systems), multiple wireless communication devices (e.g., UEs, terminals, and / or serving nodes) may be located in a serving cell. The multiple wireless communication devices may receive / obtain signals from a wireless communication node (e.g., a central processing unit (CPU), a terrestrial terminal, a base station, a gNB, an eNB, a transmission-receiving point (TRP), a network (NW), or a serving node). In some embodiments, the multiple wireless communication devices (e.g., one or more UEs) may transmit / transmit / broadcast signals (e.g., sounding reference signals and / or other signals) to the wireless communication node. The sounding reference signals (SRS) may be used to measure / quantify channel state information (CSI) of a channel between the wireless communication node and at least one wireless communication device. The CSI (and / or other information) may be used to improve the throughput of the cell. Thus, the flexibility, coverage, and / or capacity of the SRS may be enhanced to improve the throughput of the cell.

[0031] In certain systems (e.g., Long Term Evolution (LTE) systems and / or other systems), a wireless communication device may transmit / transmit / communicate / broadcast an uplink (UL) SRS on the last data symbol of a subframe. The wireless communication device may transmit / transmit the UL SRS (e.g., on the last data symbol of a subframe) based on one or more parameters (e.g., frequency band, frequency domain location, sequence cyclic shift, period, subframe offset, and / or other parameters). The wireless communication node may indicate / provide / specify / configure / transmit the one or more parameters. In some embodiments, the wireless communication node may determine CSI of one or more UL channels of the wireless communication device. The wireless communication node may determine CSI of the UL channel based on (or according to) the received SRS. In some embodiments, the wireless communication node may perform multiple operations (e.g., frequency selective scheduling and / or closed loop power control) according to (or by using) the determined CSI.

[0032] In some systems (e.g., LTE Release 10 and / or other systems), one or more non-precoding sounding reference signals (SRS) may be used during UL communication / transmission (e.g., antenna-specific SRS). A demodulation reference signal (DMRS) of a physical UL shared channel (PUSCH) may be used to perform precoding. A wireless communication node may receive / obtain the non-precoding SRS to estimate the original CSI. In some embodiments, a wireless communication node may not be able to estimate / obtain the CSI based on (or according to) the precoding DMRS. Under such circumstances, a wireless communication device may consume / use additional SRS resources when using multiple antennas to transmit the non-precoding SRS. Thus, the number of wireless communication devices that are simultaneously multiplexed may be reduced in a system. In some embodiments, the SRS may be configured by (or according to) using higher layer signaling (e.g., type 0 trigger) and / or downlink control information (e.g., type 1 trigger). SRS transmissions configured by using higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control-Control Element (MAC-CE) signaling, and / or other types of signaling) may be periodic, while SRS transmissions configured by using Downlink Control Information (DCI) may be aperiodic. Certain systems (e.g., LTE-A Release 10) may improve / increase SRS resource utilization and / or flexibility in scheduling SRS by using / configuring aperiodic SRS transmissions.

[0033] In certain systems (e.g., NR Release 15), the use of SRS may be classified into at least four categories (or any number of categories). The at least four categories may include beam management, codebook-based, non-codebook-based, and / or antenna switching. Certain systems, such as NR, may support beam direction by informing a wireless communication device (e.g., UE) that a particular downlink (DL) transmission (e.g., a physical downlink shared channel (PDSCH) transmission, a physical downlink control channel (PDCCH) transmission, and / or other DL transmission) uses the same / corresponding transmission beam as a configured reference signal (e.g., a CSI reference signal (CSI-RS) and / or a synchronization signal (SS) block). For example, beam direction may be supported by informing a wireless communication device that a particular PDSCH and / or PDCCH transmission is performed using (or according to) the same spatial filter as the configured reference signal. Beam direction may be based on the configuration of one or more transmission configuration indication (TCI) states and / or downlink signaling. Each TCI state may include information regarding a reference signal (e.g., a CSI-RS and / or SS block). By associating / associating / linking / mapping a DL transmission (e.g., a PDCCH transmission and / or a PDSCH transmission) to a TCI, the wireless communication node may instruct / inform the wireless communication device to assume that the DL transmission is performed using the same / corresponding spatial filter as the reference signal associated with the TCI.

[0034] In some embodiments, the wireless communication node may be a base station. The base station may be a macrocell or small cell base station and / or a transport point. In some embodiments, the wireless communication device may be a mobile phone, a portable device, a motor vehicle, and / or a satellite access node.

[0035] (I. Scheme A) In some embodiments, one or more techniques for improving / enhancing / increasing the effective communication range of the SRS may be considered. The one or more techniques may include repetition (e.g., repeated SRS transmission), partial frequency SRS transmission (e.g., using less than the full amount of physical resource blocks (PRBs)), and / or SRS comb size extension. With respect to partial frequency SRS transmission, the wireless communication device (e.g., UE) may use power boosting (e.g., for the SRS sequence) to further enhance / improve the effective communication range of the SRS. In some embodiments, the wireless communication device may be configured to perform partial frequency SRS transmission. When the wireless communication device is configured to perform partial frequency SRS transmission, the wireless communication device may determine / configure / define a starting position in the frequency domain for transmitting the SRS as a partial frequency SRS transmission. The starting position may specify / indicate / provide a first position of a sequence / sequence of SRS in the partial frequency SRS transmission. The wireless communication device may determine / configure / define a starting position k0 in the frequency domain for transmitting the SRS as a partial frequency SRS transmission. (pi) n offset / P F For example, the wireless communication device may determine / configure / define the starting position k0 according to (or by using) the following: (pi) can be determined:

number

[0036]

number

[0037] Frequency domain shift value n shift may be used to adjust / change the SRS allocation to the reference point grid. In some embodiments, the higher layer parameters in the IE include the frequency domain shift value n shift For example, the frequency domain shift value may be included / provided / specified in the higher layer parameter freqDomainShift of the SRS-Resource and / or SRS-PosResource-r16 (or other IE). In some embodiments, the transmit comb offset

number

[0038] In some embodiments, the wireless communication device may include a partial frequency coefficient (P F ) can be obtained / obtained / received / determined. F The value of may be configured by a wireless communication node (or other entity of a wireless communication network). In some embodiments, the wireless communication device may determine P according to (or based on) at least one of the following methods: F The value of may be determined. 1) The wireless communication device selects P from a predetermined list of values. FFor example, the wireless communication device may determine a value for P F The wireless communication device and / or wireless communication node may determine that the value of P is at least one value from {2,3,4,8} and / or {2,4,8} (or other list of predetermined values). F It may be predetermined that the value of corresponds to 2. 2) The wireless communication device receives / obtains a configuration indicating a plurality of candidate values, thereby F The wireless communication device may receive the configuration via higher layer signaling (e.g., RRC signaling and / or MAC-CE signaling). In response to receiving the configuration, the wireless communication device may select / determine / identify at least one value from a plurality of candidate values ​​according to (or based on) the received DCI. The DCI may be selected from a plurality of candidate values, such as P F may indicate / provide / specify the value of 3) In some embodiments, P F The value of may not consist of multiple candidate values ​​and / or at least one value (e.g., indicated by higher layer parameters / signaling). Thus, the wireless communication device may F If the value of is 1 (e.g., P F In the absence of higher layer signaling that provides one or more candidate values ​​for .

[0039] Parameter n offset may indicate / specify a frequency domain shift value for a partial frequency SRS transmission. In some embodiments, n offset The value of may be configured by the wireless communication node (or other entity of the wireless communication network). The wireless communication device may determine n according to (or by using) at least one of the following methods: offset The value of may be obtained / determined. 1) The wireless communication device may, in accordance with (or based on) higher layer signaling, offset For example, the value of n offsetis received from higher layer signaling (e.g., RRC signaling, or other types of signaling) offset ∈{0,1,···,P F -1}. 2) The wireless communication device is offset ∈{0,1,···,P F -1} from a given list of values offset For example, the wireless communication device and / or wireless communication node may determine a value of 0 or P F n corresponds to -1 offset The value of may be predetermined. 3) The wireless communication device receives, via higher layer signaling (e.g., RRC and / or MAC-CE signaling), a configuration indicating a plurality of candidate values, thereby offset For example, the wireless communication device may determine the value of n from a number of possible values ​​indicated by the received configuration. offset In response to receiving the configuration (e.g., multiple candidate values), the wireless communication device may determine at least one value of n according to (or by using) the DCI. offset For example, the wireless communication device may receive a DCI, which may be selected from a number of candidate values, offset The value of can be indicated / provided / specified. 4) In some embodiments, n offset (and / or P F ) may not consist of multiple candidate values ​​and / or at least one value (e.g., indicated by higher layer parameters / signaling). Thus, the wireless communication device may offset may determine that n offset (provide / specify one or more candidate values ​​for).

[0040] In some embodiments, the wireless communication device may transmit n hops according to a hopping pattern / sequence. offsetThe wireless communication device may determine at least one value of n at a symbol level, slot level, resource level, resource set level, and / or at a granularity of a frequency hopping period in the time domain (e.g., based on a hopping pattern). offset The wireless communication device may determine the value of n according to a hopping pattern represented by: offset The value of can be determined:

number

[0041] In some embodiments, n offset may include or correspond to an offset component. offset and / or P F The value of may be configured via RRC signaling (or other type of higher layer signaling). The parameter k' may specify / indicate / correspond to a hopping sequence value. In some embodiments, k' may vary (or be adjusted) according to at least one of the following hopping sequences: 1) P F If is equal to 2, then k'={0,1} 2) P F is equal to 3, then k'={0,2,1} 3) P F is equal to 4, then k'={0,2,1,3} 4) P F is equal to 8, then k'={0,4,2,6,1,5,3,7}

[0042] In some embodiments, the granularity of the hopping pattern may be a frequency hopping period in the time domain. If the granularity of the hopping pattern is a frequency hopping period in the time domain, then the change in k' may occur after the SRS transmission has gone through a full round of frequency domain hopping.

[0043] In some embodiments, the parameter k Fmay indicate / specify / provide a frequency domain shift value for the partial frequency SRS transmission. The wireless communication device may determine the frequency domain shift value according to (or by using) at least one of the following methods: F The value of may be obtained / determined. 1) The wireless communication device receives k according to (or based on) higher layer signaling (e.g., RRC signaling and / or MAC-CE signaling). F For example, the value of k F is the kth signal from higher layer signaling. F ∈{1,2,...,P F -1}. 2) The wireless communication device receives the configuration via higher layer signaling (e.g., RRC and / or MAC-CE signaling) F The configuration may indicate / provide / specify multiple candidate values. For example, the wireless communication device may determine the value of k from multiple candidate values ​​indicated by the received configuration. F In response to receiving the configuration (e.g., multiple candidate values), the wireless communication device may determine at least one value of k according to (or by using) the DCI. F For example, the wireless communication device may receive a DCI, which may be selected from a number of candidate values ​​for k F The value of can be indicated / provided / specified. 3) In some embodiments, k F (and / or P F ) may not consist of multiple candidate values ​​and / or at least one value (e.g., indicated by higher layer parameters / signaling). Thus, the wireless communication device may F may determine that k has a value of 1 (e.g., in the absence of higher layer signaling, F (provide / specify one or more candidate values ​​for).

[0044] In some embodiments, the wireless communication device may select k hopping routes according to a hopping pattern / sequence.F The wireless communication device may determine at least one value of k at a symbol level, slot level, resource level, resource set level, and / or at a granularity of a frequency hopping period in the time domain (e.g., based on a hopping pattern). F The wireless communication device may determine the value of k according to a hopping pattern represented by: F The value of can be determined: k F =(k ’ F +k')modP F

[0045] In some embodiments, k F and / or P F The value of may be configured (e.g., configured by the wireless communication node) via RRC signaling (or other type of higher layer signaling). The parameter k' may specify / indicate / correspond to a hopping sequence value. In some embodiments, k' may vary (or be adjusted) according to at least one of the following hopping sequences: 1) P F If is equal to 2, then k'={0,1} 2) P F is equal to 3, then k'={0,2,1} 3) P F is equal to 4, then k'={0,2,1,3} 4) P F is equal to 8, then k'={0,4,2,6,1,5,3,7}

[0046] In some embodiments, the granularity of the hopping pattern may be a frequency hopping period in the time domain. If the granularity of the hopping pattern is a frequency hopping period in the time domain, the change / modification in k' may occur after the SRS transmission has gone through a full round of frequency domain hopping.

[0047] (II. Scheme B) Some systems (e.g., NR Rel-15) may support triggering (e.g., by wireless communication nodes) of aperiodic SRS resource sets using DCI to enable dynamic UL / DL channel measurements. However, current system support for triggering aperiodic SRS resource sets using DCI may be limited. The limitations may cause PDCCH congestion, DCI and / or reference signal (RS) overhead, and / or excessive power consumption by wireless communication devices (e.g., UEs). Possible solutions to these problems may include increasing the network's flexibility when triggering aperiodic SRS.

[0048] In some embodiments, a given aperiodic SRS resource set may be transmitted / transmitted / broadcast / communicated in the (t+1)th available slot relative to a reference slot. The parameter t may specify / indicate / provide a value for the slot offset of the resource set. In some embodiments, the parameter t may be indicated / specified / provided via DCI and / or RRC signaling (e.g., when only one value of t is configured via RRC signaling). In some embodiments, the possible values ​​of t may include 0 (or other values). In some embodiments, the reference slot may be defined / configured according to the following options: · Option 1: The reference slot may include or correspond to a slot with a trigger DCI. · Option 2: The reference slot may include or correspond to a slot indicated by a defined trigger offset (eg, a legacy trigger offset).

[0049] In some embodiments, option 1 may be a part of option 2. Particular embodiments may employ option 2 to define / configure a reference slot, and option 1 may be a basic feature for supporting a trigger offset extension. For example, a wireless communication device's capability may support a trigger offset extension to determine / identify / configure an SRS transmission slot according to a reference slot (e.g., option 1) at which a DCI that triggers an SRS is received. In some embodiments, a wireless communication device may report / specify / indicate (e.g., via a report message) whether the wireless communication device supports a defined trigger offset configured with at least one non-zero value. A wireless communication device may support a defined trigger offset configured with at least one non-zero value if a trigger offset extension (e.g., Rel-17 trigger offset extension) is used (e.g., to determine an SRS transmission slot).

[0050] In some embodiments, the capabilities of the wireless communication device may fail to support (or the wireless communication device may fail to report support for) a defined trigger offset configured with at least one non-zero value. If the capabilities of the wireless communication device fail to support a defined trigger offset configured with at least one non-zero value, the defined trigger offset may be configured using a zero value. For example, if a trigger offset extension is used to determine the SRS transmission slot (e.g., if a list of slot offset values ​​t is configured), the defined trigger offset may be configured using a zero value. In this example, the slot having the trigger DCI may include or correspond to a reference slot.

[0051] In some embodiments, the capabilities of the wireless communication device may support (or the wireless communication device may report support for) a defined trigger offset configured with at least one non-zero value. If the capabilities of the wireless communication device support a defined trigger offset configured with at least one non-zero value, the defined trigger offset may be configured using a non-zero value. For example, if a trigger offset extension is used to determine the SRS transmission slot (e.g., if a list of slot offset values ​​t is configured), the defined trigger offset may be configured using a non-zero value. In this example, the slot indicated by the defined trigger offset (e.g., a legacy trigger offset) may include or correspond to a reference slot.

[0052] A. Wireless Communication Device Capabilities with Respect to Slot Offset (t) Values The wireless communication node may configure one or more values ​​of slot offset (t) for a resource set via RRC signaling (or other type of higher layer signaling). In some embodiments, the wireless communication device may report / provide (e.g., by a report message to the wireless communication node) a maximum number of slot offset (t) for the resource set. In some embodiments, the wireless communication device may report / specify / indicate a maximum value of t for the resource set. The SRS resource set may be transmitted / communicated in the (t+1)th available slot relative to a reference slot.

[0053] (B. DCI Instructions for Value of Slot Offset (t)) In some embodiments, the DCI (e.g., DCI format 0_1 / 0_2 without data and / or CSI) may support an option to use / reuse an unused field and / or an option to use / define / configure a dedicated field (e.g., a new field) of the DCI to indicate / specify / provide at least one value of slot offset (t) for a resource set. If the dedicated field is configured to indicate (e.g., indicate by the wireless communication node) at least one value of t, the wireless communication device may ignore (e.g., not be expected to reuse) the unused field. If the unused field is configured to indicate at least one value of t, the wireless communication device may ignore (e.g., not be expected to find out) the dedicated field of the DCI.

[0054] (III. Scheme C) In some embodiments (e.g., for aperiodic antenna switching SRS), the capabilities of the wireless communication device may support configuring N<=N_max resource sets. The value of N_max may indicate / specify / provide the maximum number of configured resource sets. The value of N may indicate the number of resource sets (N) configured by the wireless communication device. The wireless communication device may report / specify / indicate the value of N_max and / or the value of N. In some embodiments, based on the RRC configuration, at least K resources may be distributed among the N resource sets. In some embodiments, for 1T6R, K=6, N_max=[4], and / or each resource has 1 port. In some embodiments, for 1T8R, K=8, N_max=[4], and / or each resource has 1 port. In some embodiments, for 2T6R, K=3, N_max=[3], and / or each resource has two ports. In some embodiments, for 2T8R, K=4, N_max=[4], and / or each resource has two ports. In some embodiments, for 4T8R, K=2, N_max=[2], and / or each resource has 4 ports. The number of candidate values ​​of N that will be supported for each xTyR is left for future study.

[0055] In some embodiments (e.g., for each supported xTyR), the wireless communication device may report / provide / specify / indicate (e.g., via a reporting message) a value of N_max and / or a number of supported values ​​for the number of resource sets (N) configured by the wireless communication device. For example, the wireless communication device may report / specify / indicate whether the capabilities of the wireless communication device provide support for configuring one or more values ​​of N. In some embodiments, the wireless communication device may report / indicate supported values ​​for N.

[0056] (IV. Scheme D) In some embodiments, certain systems (e.g., Rel-17) may extend / improve / increase the capacity and / or coverage of an SRS according to (or based on) at least one of the following options: Option 1: Increase the maximum number of repeated symbols in one slot and / or one SRS resource. · Option 2: Support SRS transmission in partial consecutive resource blocks (RBs) in at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol. · Option 3: Introduce support for Comb 8.

[0057] (A. Option 1: Regarding increased repetitions) In some embodiments, the wireless communication device can maintain phase continuity for a number of repeated symbols. The wireless communication device (e.g., UE) can report / specify / indicate (e.g., via a reporting message) the maximum number of repeated symbols in the SRS resource. For example, the wireless communication device can report (e.g., to a wireless communication node) the maximum number of repeated symbols for which the wireless communication device can maintain phase continuity.

[0058] (B. Options 2 and 3: Regarding partial frequency SRS transmission and Comb 8) In some embodiments, the wireless communication device may perform / enable resource block level partial frequency sounding (RPFS) and / or power boosting for comb 8. The wireless communication device may set the maximum comb value, the maximum value of power boosting for RPFS, and / or the partial frequency coefficient (P F ) maximum value. For example, the wireless communication device may report a maximum power boosting value and a maximum comb value. In another example, the wireless communication device may report / specify / indicate a maximum value of P F In yet another example, the wireless communication device may report a maximum of P F and a maximum comb value. The comb value may specify / indicate the number of subcarriers out of the total number of subcarriers in the RB that are used to transmit at least one SRS (e.g., 12 subcarriers). In some embodiments, P F may be reported for each range of m_SRS (RB number of SRS transmission in frequency domain). In some embodiments, the wireless communication device may report / provide a minimum number of SRS RBs in a hop and / or OFDM symbol. In some embodiments, the wireless communication device may report (e.g., to a wireless communication node) a minimum number of SRS subcarriers in a hop and / or OFDM symbol.

[0059] (V. Scheme E) In some embodiments, transmit power control (TPC) commands of the DCI can be used for SRS power control. The use of TPC commands can avoid large fluctuations / changes in SRS power between symbols, resources, and / or resource sets. In some embodiments, one or more rules can be predefined / predetermined / configured between the wireless communication node and the wireless communication device. 1) A wireless communication device may be expected to receive / acquire the same TPC command between SRS repeated symbols. If the wireless communication device receives different / separate / distinct TPC command values ​​on different / separate / distinct SRS repeated symbols, the TPC command value on the first SRS repeated symbol may be applied to other SRS repeated symbols included in the same slot, SRS resource, and / or SRS resource set. If different / distinct TPC command values ​​are demodulated on different SRS repeated symbols, the TPC command value on the first SRS repeated symbol may be applied to other SRS repeated symbols included in the same slot, SRS resource, and / or SRS resource set. If different TPC command values ​​are applied to different SRS repeated symbols, the TPC command value on the first SRS repeated symbol may be applied to other SRS repeated symbols included in the same slot, SRS resource, and / or SRS resource set. The wireless communication device may not be expected to receive / obtain TPC command values ​​and / or apply new values ​​of TPC commands to multiple SRS repeated symbols (in the time domain), which may be included in the same slot, SRS resource, and / or SRS resource set. 2) A wireless communication device may be expected to receive / obtain the same TPC commands between SRS resources within the same SRS resource set. If the wireless communication device receives different / separate / distinguishable TPC command values ​​on different / separate SRS resources in the same SRS resource set, the value of the TPC command on the first SRS resource may be applied to the other SRS resources included in the same SRS resource set. If different / separate TPC command values ​​are demodulated on different SRS resources in the same SRS resource set, the value of the TPC command on the first SRS resource may be applied to the other SRS resources included in the same SRS resource set. If different TPC command values ​​are applied to different SRS resources in the same SRS resource set, the value of the TPC command on the first SRS resource may be applied to the other SRS resources included in the same SRS resource set. · The wireless communication device may not be expected to receive / obtain TPC command values ​​and / or apply new values ​​of TPC commands on multiple SRS resources included in the same SRS resource set. 3) A wireless communication device may be expected to receive / obtain the same TPC commands between different SRS resource sets when the wireless communication device's usage parameters (e.g., SRS-ResourceSet) are configured via higher layer signaling as "antennaSwitching". For example, a wireless communication device may be configured with a configuration of "t1r4" for 1T4R, or "t1r8" for 1T8R (e.g., depending on the capabilities of the wireless communication device). When a wireless communication device receives / obtains different TPC command values ​​on different SRS resource sets, the value of the TPC command on the first SRS resource set can be applied to other SRS resource sets belonging to the same use. When different / separate TPC command values ​​are demodulated on different SRS resource sets, the value of the TPC command on the first SRS resource set can be applied to other SRS resource sets belonging to the same use. When different TPC command values ​​are applied to different SRS resource sets, the value of the TPC command on the first SRS resource set can be applied to other SRS resource sets belonging to the same use. · The wireless communication device may not be expected to receive / obtain TPC command values ​​and / or apply new values ​​of TPC commands on multiple SRS resource sets belonging to the same usage (on the time domain).

[0060] (VI. Scheme F) In some embodiments, a wireless communication device and / or wireless communication node may support one or more of the following configurations (e.g., to improve / increase configuration flexibility): The parameter N_symbol may provide / specify / indicate the total number of OFDM symbols in one SRS resource. In some embodiments, the parameter R may include or correspond to a repetition factor. N_symbol=8, R=2 N_symbol=8, R=4 N_symbol=8, R=8 N_symbol=10, R=2 N_symbol=10, R=10 N_symbol=12, R=2 N_symbol=12, R=4 N_symbol=12, R=12 N_symbol=14, R=2 N_symbol=14, R=14

[0061] In some embodiments, the ratio of N_symbol to R may provide an integer value. In some embodiments, higher layer signaling (e.g., RRC and / or MAC-CE signaling) and / or DCI may indicate / provide / specify the values ​​of N_symbol and / or R. For example, the above 10 configurations may be indicated / specified using at least 4 bits (or other number of bits) of RRC signaling (or other type of signaling). In some embodiments, a configuration corresponding to N_symbol=10, R=5 may be indicated by signaling.

[0062] (VII. Scheme G) In some embodiments, multiple transmit (Tx) switching configurations may be supported. In some embodiments, a wireless communication device may report that it supports multiple Tx switching configurations (e.g., both 1T8R and 1T6R are supported). At least two methods may be used to determine the Tx switching configuration for a wireless communication device.

[0063] (A. Method 1) The plurality of SRS resource sets may be divided / partitioned / organized / classified into at least two groups, where the at least two groups correspond to 1T8R and 1T6R, respectively. For example, a first SRS resource set group may correspond to 1T8R, and a second SRS resource set group may correspond to 1T6R. For each SRS resource set, at least one RRC parameter may be used to link / associate either 1T8R or 1T6R. In some embodiments, at least one RRC parameter may be used to label / classify the SRS resource set corresponding to 1T6R and / or the SRS resource set corresponding to 1T8R. The wireless communication node may indicate the label / classification in the DCI (e.g., to reduce DCI overhead).

[0064] (B. Method 2) In some embodiments, the wireless communication device may determine whether the SRS resource set and / or resources correspond to 1T6R or 1T8R based on (or according to) the resource set and / or number / amount of resources triggered by the wireless communication node.

[0065] (VIII. Scheme H) A wireless communication device may indicate / specify / report whether it supports being configured with the same SRS resource and / or SRS resource set for multiple uses. If the wireless communication device fails to report such capability, it retains other behavior (e.g., Rel-15 and / or Rel-16 behavior). In some embodiments, RRC parameters (or other parameters) can be used to enable this functionality for all possible sets without defining parameters (e.g., RRC parameters) for each resource set. Whether a particular resource / resource set is used for multiple uses may depend on the configuration of the wireless communication node based on whether the same set ID and / or resources are used for different uses.

[0066] (IX. Sounding Reference Signal Transmission) 4 shows a flow diagram of a method 450 for sounding reference signal transmission. The method 450 may be implemented using any of the components and devices detailed herein in connection with FIGS. 1-3. In general, the method 450 may include receiving configuration information for SRS transmission (452). The method 450 may include transmitting the SRS according to the configuration information (454).

[0067] Now referring to operation (452), in some embodiments, a wireless communication device (e.g., UE) may receive / obtain / obtain configuration information for SRS transmission from a wireless communication node (e.g., gNB). The wireless communication node may transmit / transmit / broadcast / communicate the configuration information to the wireless communication device. In some embodiments, the wireless communication device may determine / configure / identify a starting position in the frequency domain for transmitting the SRS. The wireless communication device may determine / configure / identify an offset parameter (n offset ), partial frequency coefficients (P F ), and / or other information. In some embodiments, the wireless communication device may transmit / transmit the SRS as a partial frequency SRS transmission.

[0068] In some embodiments, the wireless communication device includes n offset and P F Ratio functions of (e.g.,

number

[0069] In some embodiments, higher layer signaling (e.g., RRC signaling) may include F may provide / specify / fail to provide one or more candidate values ​​of P F In the absence of higher layer signaling that provides one or more candidate values ​​of P F In some embodiments, the wireless communication device may determine that n has a value of 1 (or other value). offset In some embodiments, the wireless communication device may determine / identify / configure the value of n (or other value) by receiving / obtaining the configuration. offsetThe wireless communication device may determine the value of n by receiving / obtaining / analyzing the DCI. The configuration may indicate / specify / provide multiple candidate values. The wireless communication device may receive the configuration via higher layer signaling (e.g., RRC signaling or other types of signaling). In some embodiments, the wireless communication device may determine the value of n by receiving / obtaining / analyzing the DCI. offset The DCI may determine the value of n from (or according to) multiple candidate values. offset In some embodiments, higher layer signaling may indicate / provide / specify the value of n offset may provide / fail to provide one or more candidate values ​​of n offset In the absence of higher layer signaling that provides one or more candidate values ​​of offset may be determined to have a value of 0 (or some other value).

[0070] In some embodiments, the wireless communication device may select n hopping patterns according to (or based on) a particular granularity. offset The particular granularity may include or correspond to a frequency hopping period at a symbol level, a slot level, a resource level, a resource set level, and / or in the time domain. offset =(n' offset +k')modP F In some embodiments, n' can be represented by: offset may include or correspond to an offset component. offset can be configured via RRC signaling (and / or other types of signaling). In some embodiments, k′ can be a hopping sequence value. In some embodiments, k′ can be a hopping sequence value. F If k′ is equal to 2 (or other value), then k′ may vary according to (or based on) a hopping sequence of {0,1}. FIf P is equal to 3 (or other value), then k′ may vary according to (or based on) a hopping sequence of {0,2,1}. F When P is equal to 4 (or other value), k may vary according to a hopping sequence of {0, 2, 1, 3}. F If n is equal to 8 (or other value), it may vary according to a hopping sequence of {0, 4, 2, 6, 1, 5, 3, 7}. offset The hopping pattern associated with / related to may be of the granularity of a frequency hopping period in the time domain. offset If the hopping pattern associated with k′ is at the granularity of a frequency hopping period in the time domain, then the change / modification / adjustment in k′ may occur after the SRS transmission has gone through a full round of hopping in the frequency domain.

[0071] In some embodiments, the wireless communication device may transmit / send / communicate a report message to the wireless communication node before receiving the configuration information. In some embodiments, the report message may indicate / specify / provide the capabilities of the wireless communication device. In some embodiments, the capabilities may include supporting a trigger offset extension. The capabilities may include supporting a trigger offset extension to determine / configure an SRS transmission slot according to (or based on) a reference slot at which a DCI is received that triggers / causes an SRS (e.g., aperiodic SRS). In some embodiments, the trigger offset extension may be used. If the trigger offset extension is used, the report message may include / provide / specify an indication of whether the wireless communication device supports a defined trigger offset (e.g., a legacy trigger offset) that is configured with at least one non-zero value.

[0072] In some embodiments, the report message may exclude / omit any indication of support for a defined trigger offset configured with at least one non-zero value. If the report message excludes any indication of support for a defined trigger offset configured with at least one non-zero value, the defined trigger offset may be configured using a zero value. In some embodiments, the report message may include / provide / specify an indication of support for a defined trigger offset configured with at least one non-zero value. If the report message includes / provides an indication of support for a defined trigger offset configured with at least one non-zero value, the defined trigger offset may be configured using a non-zero value. In some embodiments, the report message may include / specify / provide / indicate a maximum number of slot offsets (t) for the resource set. In some embodiments, the report message may include / indicate / provide a maximum value of t for the resource set. In some embodiments, the SRS resource set may be transmitted / transmitted / communicated in the (t+1)th available slot relative to the reference slot.

[0073] In some embodiments, the DCI may support an option to use unused and / or dedicated fields (e.g., a new dedicated field) to indicate / specify / provide at least one value of slot offset for a resource set (t). In some embodiments, if the dedicated field is configured to indicate / provide / specify at least one value of t, the wireless communication device may ignore the unused field. In some embodiments, if the unused field is configured to indicate / provide / specify at least one value of t, the wireless communication device may ignore the dedicated field. In some embodiments, the reporting message may include / specify / indicate at least one of the maximum number of configured resource sets (N_max) and / or the number of values ​​supported for the number of resource sets (N) configured by the wireless communication device, where N≦N_max. In some embodiments, the reporting message may include / provide / specify / indicate the maximum number of repeated symbols for which the wireless communication device can maintain phase continuity. In some embodiments, the reporting message may include / provide / specify / indicate the fractional frequency coefficient (P F ), maximum comb value, and / or maximum power boosting value.

[0074] In some embodiments, a wireless communication device may be expected to receive / obtain the same / corresponding TPC commands between SRS repeated symbols. In some embodiments, a wireless communication device may be expected to receive / obtain the same / corresponding TPC commands between SRS resources in the same SRS resource set. In some embodiments, a wireless communication device may be expected to receive / obtain the same TPC commands between different / distinct / separate SRS resource sets when a usage parameter of the wireless communication device is configured as "antennaSwitching" via higher layer signaling (e.g., RRC signaling or other types of signaling).

[0075] Referring now to operation (454), in some embodiments, the wireless communication device may transmit / send / broadcast / communicate the SRS to the wireless communication node according to (or based on) the configuration information. The wireless communication node may receive / obtain the SRS from the wireless communication device according to (or based on) the configuration information. In some embodiments, the configuration information may be received / obtained from the wireless communication node via RRC signaling, MAC CE signaling, DCI transmission, and / or other types of signaling / transmission. In some embodiments, the configuration information may include / provide / specify an indication of the total number of OFDM symbols (N_symbol) in one SRS resource and / or a repetition factor (R). In some embodiments, the ratio of N_symbol to R provides an integer value. In some embodiments, the configuration information may be received / obtained from the wireless communication node via RRC signaling (or other types of higher layer signaling). In some embodiments, the RRC signaling may include / provide / specify at least one indicator to associate / link / label one of a plurality of transmit switching configurations (e.g., Tx switching configurations such as 1T8R and 1T6R) with at least one SRS resource and / or set of SRS resources.

[0076] Although various embodiments of the present solution have been described above, it should be understood that they are presented only as examples and not as limitations. Similarly, various figures may depict example architectures or configurations provided to enable those skilled in the art to appreciate example features and functionality of the present solution. However, such a person will appreciate that the solution is not limited to the depicted example architectures or configurations, but can be implemented using various alternative architectures and configurations. Furthermore, as will be appreciated by those skilled in the art, one or more features of one embodiment can be combined with one or more features of another embodiment described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the above-described example embodiments.

[0077] It is also understood that any reference to an element herein using a designation such as "first," "second," etc., does not generally limit the quantity or order of those elements. Rather, these designations 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 imply that only two elements may be used or that the first element must precede the second element in any way.

[0078] Furthermore, those skilled in the art will understand that information and signals may be represented using any of a variety of different technologies and techniques. For example, the data, instructions, commands, information, signals, bits and symbols that may be referred to in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0079] Those skilled in the art will further appreciate that any of the various example logic blocks, modules, processors, means, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementations, analog implementations, or a combination of the two), firmware, various forms of programs or design code incorporating instructions (for convenience, referred to herein as "software" or "software modules"), or any combination of these technologies. To clearly illustrate this interchangeability of hardware, firmware, and software, various example components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these technologies, depends on the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in various ways for each particular application, but such implementation decisions are not intended to depart from the scope of the present disclosure.

[0080] Further, those skilled in the art will appreciate that the various example logic blocks, modules, devices, components, and circuits described herein can be implemented in or executed by an integrated circuit (IC), which can 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, modules, and circuits can further include an antenna and / or a transceiver for communicating with various components in a network or device. The general purpose processor can be a microprocessor, although in alternative examples, the processor can be any conventional processor, controller, or state machine. The processor can 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 in combination with a DSP core, or any other suitable configuration for performing the functions described herein.

[0081] When implemented in software, the functions can be stored as one or more instructions or codes on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored in a computer-readable medium. Computer-readable media includes both computer storage media and communication media, including any medium that can enable a computer program or code to be transferred from one place to another. A storage medium can be any available medium that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0082] As used herein, the term "module" refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Moreover, for purposes of explanation, various modules are described as individual modules. However, as would be apparent to one skilled in the art, two or more modules may be combined to form a single module that performs associated functions according to embodiments of the present solution.

[0083] Furthermore, memory or other storage devices and communication components may be used in embodiments of the solution. For clarity, it will be appreciated that the above description has described embodiments of the solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the solution. For example, functionality shown to be performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Thus, references to specific functional units do not indicate a strict logical or physical structure or organization, but merely to suitable means for providing the described functionality.

[0084] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the present disclosure. Thus, 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. 1. A method, comprising: receiving, by a wireless communication device, configuration information for sounding reference signal (SRS) transmission from a wireless communication node; transmitting, by the wireless communication device, an SRS to the wireless communication node according to the configuration information; determining, by the wireless communication device, a starting position in the frequency domain for transmitting the SRS according to an offset parameter (n offset ) and a partial frequency coefficient (P F ); A method comprising:

2. The method described in claim 1, wherein the starting position in the frequency domain is for transmitting the SRS as a partial frequency SRS transmission.

3. The wireless communication device ｏｆｆｓｅｔ and the above P Ｆ The method of claim 1 , further comprising determining the starting position as a function of a ratio of

4. The P Ｆ In the absence of higher layer signaling providing one or more candidate values ​​for P, Ｆ The method of claim 1 , comprising determining that has a value of one.

5. The wireless communication device hops the n frequency bands according to a hopping pattern with a granularity of a frequency hopping period in the time domain. ｏｆｆｓｅｔ determining at least one value of The hopping pattern is [0040] 2. The method of claim 1, wherein n'offset is an offset component configured via radio resource configuration (RRC) signaling, and k' is a hopping sequence value.

6. The k′ is P Ｆ is equal to 2, then {0,1}, or P Ｆ If is equal to 4, then {0, 2, 1, 3} The method of claim 5, wherein the hopping sequence varies according to a hopping sequence of

7. 1. A method, comprising: transmitting, by a wireless communication node, configuration information for a sounding reference signal (SRS) transmission to a wireless communication device; receiving, by the wireless communication node, an SRS from the wireless communication device in accordance with the configuration information; Including, A method, wherein a starting position in the frequency domain for transmitting the SRS is determined according to an offset parameter (n offset ) and a fractional frequency coefficient (P F ).

8. The method of claim 7, wherein the starting position in the frequency domain is for transmitting the SRS as a partial frequency SRS transmission.

9. The method of claim 7, wherein the starting position is determined as a function of a ratio of the n offset to the P F .

10. The method of claim 7, wherein P F is determined to have a value of one in the absence of higher layer signaling that provides one or more candidate values ​​for P F .

11. The at least one value of n offset is determined according to a hopping pattern with a granularity of a frequency hopping period in the time domain, the hopping pattern being: [0041] 8. The method of claim 7, wherein n'offset is an offset component configured via radio resource configuration (RRC) signaling, and k' is a hopping sequence value.

12. The k' is If P F is equal to 2, then {0, 1}, or If P F is equal to 4, then {0, 2, 1, 3} The method of claim 11, wherein the hopping sequence varies according to a hopping sequence of 13. A wireless communication node, comprising: at least one processor; Transmitting configuration information for sounding reference signal (SRS) transmission to a wireless communication device via a transceiver; receiving an SRS from the wireless communication device via the transceiver in accordance with the configuration information; configured to: A starting position in the frequency domain for transmitting the SRS is determined according to an offset parameter (n offset ) and a fractional frequency factor (P F ).

14. The wireless communication node of claim 13, wherein the starting position in the frequency domain is for transmitting the SRS as a partial frequency SRS transmission.

15. A wireless communication device, comprising: at least one processor; receiving, via a transceiver, from a wireless communication node, configuration information for a sounding reference signal (SRS) transmission; transmitting an SRS to the wireless communication node via the transceiver according to the configuration information; determining a starting position in the frequency domain for transmitting the SRS according to an offset parameter (n offset ) and a partial frequency coefficient (P F ); 13. A wireless communication device configured to:

16. The wireless communication device of claim 15, wherein the starting position in the frequency domain is for transmitting the SRS as a partial frequency SRS transmission.

17. The wireless communication device of claim 15, wherein the at least one processor is configured to determine the starting position as a function of a ratio of the n offset and the P F .

18. The wireless communication device of claim 15, wherein the at least one processor is configured to determine that P F has a value of 1 in the absence of higher layer signaling providing one or more candidate values ​​for P F .

19. The at least one processor is configured to determine at least one value of n offset according to a hopping pattern with a granularity of a frequency hopping period in the time domain; The hopping pattern is [0042] 16. The wireless communication device of claim 15, wherein n'offset is an offset component configured via radio resource configuration (RRC) signaling, and k' is a hopping sequence value.

20. The k' is If P F is equal to 2, then {0, 1}, or If P F is equal to 4, then {0, 2, 1, 3} The wireless communication device of claim 19, wherein the hopping sequence varies according to a hopping sequence of

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