System and method for sounding reference signal transmission

Abstract

A system and method for sounding reference signal (SRS) transmission is proposed. A wireless communication device may receive configuration information for SRS transmission from a wireless communication node. The wireless communication device may send the SRS to the wireless communication node according to the configuration information.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications, including but not limited to systems and methods for Sounding Reference Signal (SRS) transmission. Background Art

[0002] The third generation partnership project (3GPP), a standardization organization, is currently in the process of developing a new radio interface called 5G New Radio (5G NR) and the next generation packet core network (NG-CN or NGC). 5G NR will include three main components: 5G access network (5G-AN), 5G core network (5G Core Network, 5GC) and user equipment (UE). In order to facilitate the implementation of different data services and requirements, some components of 5GC components are software-based and some components are hardware-based so that these components can be adjusted as needed, thereby simplifying 5GC components (also known as network functions). Summary of the invention

[0003] The example embodiments disclosed herein are intended to solve problems related to one or more problems existing in the prior art, and provide additional features, which will become apparent when referring to the following detailed description in conjunction with the accompanying drawings. According to various embodiments, example systems, methods, devices, and computer program products are disclosed herein. However, it is understood that these embodiments are presented by way of example and are not restrictive, and it is apparent to those of ordinary skill in the art who read this disclosure that various modifications can be made to the disclosed embodiments while remaining within the scope of this disclosure.

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

[0005] In some embodiments, the wireless communication device may use an offset parameter (n offset ) and the partial frequency factor (P F ) determines the starting position in the frequency domain for transmitting the SRS, which is transmitted as a partial frequency SRS transmission. In some embodiments, the wireless communication device may determine the starting position in the frequency domain for transmitting the SRS according to n offset With PF In some embodiments, the wireless communication device can determine P from a predetermined list of values. F In some embodiments, the wireless communication device may determine P by receiving a configuration indicating a plurality of candidate values ​​via high-layer signaling. F In some embodiments, the wireless communication device may receive an indication of P from a plurality of candidate values. F The value of the downlink control information (Downlink Control Information, DCI) is used to determine P F The value of .

[0006] In some embodiments, in the absence of P F In the case of high-level signaling providing one or more candidate values, the wireless communication device may determine P F The value of is 1. In some embodiments, the wireless communication device can select from a predetermined list of values ​​(e.g., {0, 1, ..., P F -1}) to determine n offset In some embodiments, the wireless communication device can determine n from high-level signaling. offset In some embodiments, the wireless communication device may determine n by receiving a configuration indicating a plurality of candidate values ​​via high-layer signaling. offset In some embodiments, the wireless communication device may receive an indication of n from a plurality of candidate values. offset The downlink control information (DCI) of the value is used to determine n offset In some embodiments, in the absence of n offset In the case of high-level signaling providing one or more candidate values, the wireless communication device may determine n offset The value of is 0.

[0007] In some embodiments, the wireless communication device may determine n according to a hopping pattern at a symbol level, a time slot level, a resource level, a resource set level, or a frequency hopping cycle in the time domain. offset At least one value of n, the jump pattern is represented by: offset =(n′ offset +k′)mod P F In some embodiments, n′ offset It can be an offset component configured via Radio Resource Configuration (RRC) signaling. In some embodiments, k′ can be a hopping sequence value. In some embodiments, if P F = 2, then k′ can be changed according to the hopping sequence {0,1}. In some embodiments, if PF =3, then k′ may change according to the hopping sequence {0, 2, 1}. In some embodiments, if P F = 4, then k′ can be changed according to the hopping sequence {0, 2, 1, 3}. In some embodiments, if P F =8, then k′ can be changed according to the hopping sequence {0,4,2,6,1,5,3,7}. In some embodiments, if offset The associated hopping pattern has a granularity of a frequency hopping period in the time domain, so k′ may change after the SRS transmission has undergone a complete round of hopping in the frequency domain.

[0008] In some embodiments, the wireless communication device may send a report message to the wireless communication node before 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 trigger offset enhancement to determine the SRS transmission time slot according to a reference time slot, in which downlink control information (DCI) triggering the SRS is received. In some embodiments, trigger offset enhancement may be used. When trigger offset enhancement is used, the report message may include an indication of whether the wireless communication device supports configuring a defined trigger offset with at least one non-zero value. In some embodiments, the report message may not include any indication of supporting configuring a defined trigger offset with at least one non-zero value. When the report message does not include any indication of supporting configuring a defined trigger offset with at least one non-zero value, a zero value may be used to configure the defined trigger offset. In some embodiments, the report message may include an indication of supporting configuring a defined trigger offset with at least one non-zero value. When the report message includes an indication of supporting configuring a defined trigger offset with at least one non-zero value, a non-zero value may be used to configure the defined trigger offset. In some embodiments, the report message may include a value of a maximum number of slot offsets (t) for a resource set. In some embodiments, the report message may include a maximum value of t for a resource set. In some embodiments, the SRS resource set may be transmitted in the (t+1)th available time slot relative to the reference time slot.

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

[0010] In some embodiments, the wireless communication device may be expected to receive the same transmit power control (TPC) command between multiple SRS repetition symbols. In some embodiments, the wireless communication device may be expected to receive the same transmit power control (TPC) command between multiple SRS resources in the same SRS resource set. In some embodiments, when the usage parameter of the wireless communication device is configured as 'antenna switching' via high-level signaling, the wireless communication device may be expected to receive the same transmit power control (TPC) command between different SRS resource sets. 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 the following indications: the total number of orthogonal frequency-division multiplexing (OFDM) symbols in one SRS resource (N_symbol), and the repetition factor (R), the ratio of N_symbol to R being 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 associating one of a plurality of transmission switch configurations with at least one SRS resource or set of SRS resources.

[0011] At least one aspect is directed to a system, method, apparatus, or computer-readable medium. A wireless communication node may send configuration information for sounding reference signal (SRS) transmission to a wireless communication device. The wireless communication node may receive the SRS from the wireless communication device according to the configuration information.

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

[0013]

[0014] When using trigger offset enhancement, the wireless communication device may report / indicate / specify / notify whether the wireless communication device supports configuring a defined trigger offset (e.g., a legacy trigger offset) to a non-zero value. Trigger offset enhancement may be used to determine / configure SRS transmission time slots. In some embodiments, the wireless communication device may report / indicate the maximum number of repeated symbols for which phase continuity is to be maintained. In some embodiments, the wireless communication device may report / indicate the maximum value and / or maximum comb value of the power boost for Resource Block Level Partial Frequency Sounding (RPFS). In some embodiments, the wireless communication device may report at least one of the following: the maximum value of the partial frequency factor (max_P F ), maximum comb value, and / or maximum value of power boost. In some embodiments, the wireless communication device may report / provide max_P F and / or maximum comb value. In some embodiments, TPC commands in the DCI may be used for SRS power control to avoid large fluctuations / changes in SRS power between symbols, between resources, and / or between resource sets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Various example embodiments of the present solution are described in detail with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and depict only example embodiments of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered as limiting the breadth, scope or applicability of the present solution. It should be noted that for clarity and ease of description, these drawings are not necessarily drawn to scale.

[0016] Figure 1 An example cellular communication network in which the technology disclosed herein may be implemented according to an embodiment of the present disclosure is shown;

[0017] Figure 2 A block diagram showing an example base station and user equipment according to some embodiments of the present disclosure is shown;

[0018] Figure 3 FIG. 1 shows a method for offsetting a sounding reference signal according to some embodiments of the present disclosure. A table of example values ​​for configuration; and

[0019] Figure 4 A flowchart of an example method for sounding reference signal transmission according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0020] 1. Mobile communication technology and environment

[0021] Figure 1 An example wireless communication network and / or system 100 is shown in which the techniques disclosed herein may be implemented according to an embodiment of the present disclosure. In the following discussion, 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 referred to as "BS 102"; also referred to as a wireless communication node) and a user equipment 104 (hereinafter referred to as 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 a cluster of cells 126, 130, 132, 134, 136, 138, and 140 covering a geographic area 101. Figure 1 1, BS 102 and UE 104 are contained within respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating over its allocated bandwidth to provide adequate radio coverage to its intended users.

[0022] For example, BS 102 may operate on an allocated channel transmission bandwidth to provide adequate coverage to UE 104. BS 102 and UE 104 may communicate via downlink radio frames 118 and uplink radio frames 124, respectively. Each radio frame 118 / 124 may also be divided into subframes 120 / 127, which may include data symbols 122 / 128. In the present disclosure, BS 102 and UE 104 are described herein as "communication nodes" that are non-limiting examples of methods disclosed herein that may generally be practiced. According to various embodiments of the present solution, such communication nodes may communicate wirelessly and / or wired.

[0023] Figure 2A block diagram of an example wireless communication system 200 for sending and receiving wireless communication signals (e.g., OFDM / OFDMA signals) according to some embodiments of the present solution is shown. The system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In an exemplary embodiment, the system 200 may be used in a system such as Figure 1 The wireless communication environment 100 may be used to communicate (eg, send and receive) data symbols, as described above.

[0024] The system 200 generally includes a base station 202 (hereinafter referred to as "BS 202") and a user equipment 204 (hereinafter referred to as "UE 204"). The BS 202 includes a BS (base station) transceiver module 210 (hereinafter also referred to as: BS transceiver 210, transceiver 210), a BS antenna 212 (hereinafter also referred to as: antenna 212, antenna arrangement 212), a BS processor module 214 (hereinafter also referred to as: processor module 214), a BS memory module 216 (hereinafter also referred to as: memory module 216), and a network communication module 218, each of which is coupled and interconnected to each other via a data communication bus 220 as needed. The UE 204 includes a UE (user equipment) transceiver module 230 (hereinafter also referred to as: UE transceiver 230, transceiver 230), a UE antenna 232 (hereinafter also referred to as: antenna 232, antenna arrangement 232), a UE memory module 234 (hereinafter also referred to as: memory module 234), and a UE processor module 236, each of which is coupled and interconnected to each other via a data communication bus 240 as needed. BS 202 communicates with UE 204 via communication channel 250, which may be any wireless channel or other medium suitable for data transmission as described herein.

[0025] As can be understood by those skilled in the art, the system 200 may also include Figure 2 Any number of modules outside the modules shown. It will be appreciated by those skilled in the art that the various illustrative blocks, modules, circuits, and processing logic described in conjunction with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any actual combination thereof. In order to clearly illustrate the interchangeability and compatibility of hardware, firmware, and software, various exemplary components, blocks, modules, circuits, and steps are generally described according to the functions of these hardware, firmware, and software. Whether this function is implemented as hardware, firmware, or software can depend on the specific application and the design constraints imposed on the entire system. People familiar with the concept described herein can implement this function in an appropriate manner for each specific application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.

[0026] According to some embodiments, the UE transceiver 230 may be referred to herein as an "uplink" transceiver 230 including a radio frequency (RF) transmitter and an RF receiver, each of which includes circuitry coupled to an antenna 232. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in a time division duplex manner. Similarly, according to some embodiments, the BS transceiver 210 may be referred to herein as a "downlink" transceiver 210 including an RF transmitter and an RF receiver, each of which includes circuitry coupled to an antenna 212. The downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in a time division duplex manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time so that the uplink receiver circuit is coupled to the uplink antenna 232 so that transmissions on the wireless transmission link 250 can be received while the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operation of the two transceivers 210 and 230 may be coordinated in time such that the downlink receiver coupled to the downlink antenna 212 receives transmissions on the wireless transmission link 250 at the same time as the uplink transmitter coupled to the uplink antenna 232. In some embodiments, there is tight time synchronization with a minimum guard time between changes in the duplex direction.

[0027] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via a wireless data communication link 250 and cooperate with an appropriately configured RF antenna arrangement 212 / 232 that can support a specific wireless communication protocol and modulation scheme. In some exemplary embodiments, the UE transceiver 230 and the base station transceiver 210 are configured to support industry standards (such as Long Term Evolution (LTE) and emerging 5G standards). However, it should be understood that the present disclosure is not necessarily limited to application to specific standards and related protocols. Instead, the UE transceiver 230 and the base station transceiver 210 can be configured to support alternative or additional wireless data communication protocols (including future standards or variations thereof).

[0028] According to various embodiments, BS202 may be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femtocell or a microcell. In some embodiments, UE 204 may be implemented in various types of user equipment, such as mobile phones, smart phones, personal digital assistants (PDAs), tablet computers, laptop computers, wearable computing devices, etc. Processor modules 214 and 236 may be implemented or implemented 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, a discrete gate or transistor logic, a discrete hardware component, or any combination thereof designed to perform the functions described herein. In this way, the processor may be implemented 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 digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other such configuration combination.

[0029] Further, the steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented directly in hardware, in firmware, in software modules executed by the processor modules 214 and 236, respectively, or in any practical combination thereof. The memory modules 216 and 234 may be implemented 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 214 and 236, respectively, so that the processor modules 214 and 236 can read information from and write information to the memory modules 216 and 234, respectively. The memory modules 216 and 234 may also be integrated into their respective processor modules 214 and 236. In some embodiments, the memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during the execution of instructions executed by the processor modules 214 and 236, respectively. The memory modules 216 and 234 may also each include non-volatile memory for storing instructions executed by the processor modules 214 and 236, respectively.

[0030] The network communication module 218 generally represents other components of the base station 202 that implement the base station transceiver 210 and hardware, software, firmware, processing logic and / or other network components and communication nodes configured to communicate with the base station 202. For example, the network communication module 218 can be configured to support Internet or WiMAX services. In a typical deployment, but without limitation, the network communication module 218 provides an 802.3 Ethernet interface so that the base station transceiver 210 can communicate with a traditional Ethernet-based computer network. In this way, the network communication 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 various variations thereof used herein with respect to a specified operation or function refer to a device, component, circuit, structure, machine, signal, etc., which is physically constructed, programmed, formatted and / or arranged to perform a specified operation or function.

[0031] The Open System Interconnection (OSI) model (referred to herein as the "OSI model") is a conceptual and logical layout that defines network communications used by systems (e.g., wireless communication devices, wireless communication nodes) that are interconnected and communicate with other systems. The model is divided into seven subcomponents or layers, each of which represents a conceptual set of services provided to its upper and lower layers. The OSI model also defines a logical network and effectively describes computer packet transmission by using different layer protocols. The OSI model may also be referred to as a seven-layer OSI model or a seven-layer model. In some embodiments, the first layer may be a physical layer. In some embodiments, the second layer may be a media access control (MAC) layer. In some embodiments, the third layer may be a radio link control (RLC) layer. In some embodiments, the fourth layer may be a packet data fusion protocol (PDCP) layer. In some embodiments, the fifth layer may be a radio resource control (RRC) layer. In some embodiments, the sixth layer may be a non-access stratum (NAS) or an Internet Protocol (IP) layer, and the seventh layer is another layer.

[0032] Various example embodiments of the present solution are described below with reference to the accompanying drawings so that a person of ordinary skill in the art can make and use the present solution. As will be apparent to a person of ordinary skill in the art, after reading this disclosure, various changes or modifications may be made to the examples described herein without departing from the scope of the present solution. Therefore, the present solution is not limited to the example embodiments and applications described and illustrated herein. In addition, the specific order or hierarchy of steps in the methods disclosed herein are merely example solutions. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes may be rearranged while remaining within the scope of the present solution. Therefore, a person of ordinary skill in the art may understand that the methods and techniques disclosed herein present various steps or actions in an example order, and unless otherwise expressly stated, the present solution is not limited to the specific order or hierarchy presented.

[0033] 2. System and method for reporting channel state information

[0034] In some systems (e.g., Rel-17 New Radio (NR), Next Generation (NG) systems, and / or other systems), multiple wireless communication devices (e.g., UE, terminal, and / or served node) may be located in a serving cell. The multiple wireless communication devices may receive / acquire signals from a wireless communication node (e.g., a central processing unit (CPU), a ground terminal, a base station, a gNB, an eNB, a transmission-reception point (TRP), a network (NW), or a serving node). In some embodiments, the multiple wireless communication devices (e.g., one or more UEs) may send / transmit / broadcast signals (e.g., sounding reference signals and / or other signals) to a wireless communication node. Sounding reference signals (SRS) may be used to measure / quantify channel state information (Channel State Information, CSI) of a channel between a wireless communication node and at least one wireless communication device. CSI (and / or other information) may be used to enhance the throughput of a cell. Therefore, the flexibility, coverage, and / or capacity of SRS may be enhanced to improve the throughput of a cell.

[0035] In some systems (e.g., Long-term Evolution (LTE) systems and / or other systems), a wireless communication device may send / transmit / broadcast an uplink (UL) SRS on the last data symbol of a subframe. The wireless communication device may send / transmit the UL SRS (e.g., on the last data symbol of a subframe) based on (or according to) one or more parameters (e.g., frequency band, frequency domain position, sequence cyclic shift, period, subframe offset and / or other parameters). The wireless communication node may indicate / provide / specify / configure / send the one or more parameters. In some embodiments, the wireless communication node may determine the CSI of one or more UL channels of the wireless communication device. The wireless communication node may determine the CSI of (one or more) UL channels 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) based on (or by using) the determined CSI.

[0036] In some systems (e.g., LTE Release 10 and / or other systems), one or more non-precoded sounding reference signals (SRS) (e.g., antenna-specific SRS) may be used during UL communication / transmission. The demodulation reference signal (DMRS) of the physical UL shared channel (PUSCH) may be used to perform precoding. The wireless communication node may receive / acquire (one or more) non-precoded SRS to estimate the original CSI. In some embodiments, the wireless communication node may not be able to estimate / acquire CSI based on (or according to) the precoded DMRS. In this case, when multiple antennas are used to send (one or more) non-precoded SRS, the wireless communication device may consume / use additional SRS resources. Therefore, the number of wireless communication devices that are simultaneously multiplexed within the system may be reduced. In some embodiments, the SRS can be configured by using (or according to) high-level signaling (e.g., type-0 trigger) and / or downlink control information (e.g., type-1 trigger). The SRS transmission configured by using high-layer signaling (e.g., radio resource control (RRC) signaling, medium access control element (MAC-CE) signaling, and / or other types of signaling) may be periodic, while the SRS transmission configured by using downlink control information (DCI) may be aperiodic. Certain systems (e.g., LTE-A Release 10) may improve / enhance the utilization of SRS resources and / or the flexibility of scheduling SRS by using / configuring aperiodic SRS transmission.

[0037] In some systems (e.g., NR Release 15), the use of SRS may be divided into at least four categories (or other number of categories). The at least four categories may include: beam management, codebook-based, non-codebook-based, and / or antenna switching. Some systems (such as NR) may support beam indication by notifying a wireless communication device (e.g., UE) that some downlink (DL) transmissions (e.g., physical downlink shared channel (PDSCH) transmissions, physical downlink control channel (PDCCH) transmissions, and / or other DL transmissions) use the same / corresponding transmission beam as the configured reference signal (e.g., CSI Reference Signal (CSI-RS) and / or synchronization signal (SS) block). For example, beam indication may be supported by notifying the wireless communication device that some PDSCH transmissions and / or PDCCH transmissions are performed using (or according to) the same spatial filter as the configured reference signal. The beam indication may be based on the configuration and / or downlink signaling of one or more Transmission Configuration Indication (TCI) states. Each TCI state may include information about a reference signal (e.g., CSI-RS and / or SS block). By associating / relating / linking / mapping a DL transmission (e.g., a PDCCH transmission and / or a PDSCH transmission) with a TCI, the wireless communication node may indicate / notify the wireless communication device to assume that the DL transmission is performed using a spatial filter that is the same / corresponding to the reference signal associated with the TCI.

[0038] In some embodiments, the wireless communication node may be a base station. The base station may be a base station in a macro cell or a small cell, and / or a transmission point. In some embodiments, the wireless communication device may be a mobile phone, a portable device, a car, and / or a satellite access node.

[0039] I.Option A

[0040] In some embodiments, one or more techniques may be considered to improve / enhance / increase the coverage of SRS. The one or more techniques may include: repetition (e.g., repeated SRS transmission), partial frequency SRS transmission (e.g., using less than a full amount of physical resource blocks (PRB)), and / or SRS comb size expansion. For partial frequency SRS transmission, a wireless communication device (e.g., UE) may use power boosting (e.g., to an SRS sequence) to further enhance / improve the coverage of SRS. In some embodiments, the wireless communication device may be configured to perform partial frequency SRS transmission. If 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 SRS, which is a partial frequency SRS transmission. The starting position may specify / indicate / provide the first position of the SRS series / sequence in the partial frequency SRS transmission. The wireless communication device may select a starting position in the frequency domain for transmitting SRS according to a ratio n. offset / P F Function to determine / configure / define the starting position For example, the wireless communication device can determine the starting position according to (or by using) the following formula:

[0041]

[0042] or

[0043]

[0044] in,

[0045]

[0046] or

[0047]

[0048] in

[0049]

[0050] or

[0051]

[0052]

[0053] if The starting position The reference point of the starting position may include or correspond to subcarrier 0 in common resource block 0. Otherwise, the reference point of the starting position may be the lowest subcarrier of the bandwidth part (BWP). In some embodiments, the SRS may be configured by (or according to) the information element (IE) SRS-PosResource-r16 (or other higher layer parameters). If the SRS is configured by using SRS-PosResource-r16, it may be configured according to Table 1 (see Figure 3 ) to the parameters If the SRS is not configured using SRS-PosResource-r16, the parameter may correspond to a value of 0 (e.g. ).

[0054] Frequency domain shift value n shift The SRS allocation may be adjusted / modified relative to the reference point grid. In some embodiments, the high-level parameters of the IE may include / provide / specify the frequency domain shift value n shift For example, the frequency domain shift value may be included / provided / specified in the high-level parameter freqDomainShift of SRS-Resource and / or SRS-PosResource-r16 (or other IEs). In some embodiments, the transmission comb offset may be included / provided / specified in the high-level parameter (e.g., transmissionComb) of the IE (e.g., SRS-Resource, SRS-PosResource-r16, or other IEs). In some embodiments, the parameter n b A frequency position index may be specified / provided / indicated.

[0055] In some embodiments, the wireless communication device may acquire / obtain / receive / determine a partial frequency factor (P F ) value. F The value of may be configured by a wireless communication node (or other entity in 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 value:

[0056] 1) The wireless communication device can determine P from a predetermined list of values F For example, the wireless communication device may determine P FThe value of is at least one value from {2, 3, 4, 8} and / or {2, 4, 8} (or other predetermined value lists). For example, the wireless communication device and / or the wireless communication node may predetermine P F The value of corresponds to 2.

[0057] 2) The wireless communication device may determine P by receiving / obtaining a configuration indicating a plurality of candidate values F The wireless communication device may receive the configuration via high-level 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 indicate / provide / specify P from a plurality of candidate values. F The value of .

[0058] 3) In some embodiments, the value of PF may not be configured with multiple candidate values ​​and / or at least one value (e.g., indicated by higher layer parameters / signaling). F In the case of high-level signaling providing one or more candidate values), the wireless communication device may determine P F The value of is 1.

[0059] Parameter n offset The frequency domain shift value for partial frequency SRS transmission may be indicated / specified. In some embodiments, the wireless communication node (or other entity in the wireless communication network) may be used to determine the frequency domain shift value for partial frequency SRS transmission. offset The wireless communication device may obtain / determine n according to (or by using) at least one of the following methods: offset Values:

[0060] 1) The wireless communication device can determine / configure / identify / select n according to (or based on) high-level signaling offset For example, n from high-level signaling (eg, RRC signaling, or other types of signaling) may be used. offset ∈{0,1,…,P F -1} to select at least one value of n offset to configure.

[0061] 2) The wireless communication device can select from a predetermined list of values ​​(e.g., n offset ∈{0,1,…,P F -1}) to determine n offset For example, the wireless communication device and / or the wireless communication node may predetermine n offset The value corresponds to 0 or P F -1.

[0062] 3) The wireless communication device may determine n by receiving a configuration indicating a plurality of candidate values ​​via higher layer signaling (eg, RRC signaling and / or MAC-CE signaling). offset For example, the wireless communication device can determine n from multiple candidate values ​​indicated by the received configuration. offset In response to receiving the configuration (eg, multiple candidate values), the wireless communication device may determine n based on (or by using) the DCI. offset For example, a wireless communication device may receive the DCI, wherein the DCI indicates / provides / specifies n from the plurality of candidate values. offset The value of .

[0063] 4) In some embodiments, n offset (and / or P F ) may not be configured with multiple candidate values ​​and / or at least one value (e.g., indicated by higher layer parameters / signaling). offset In the case of high-level signaling providing / specifying one or more candidate values), the wireless communication device may determine n offset The value of is 0.

[0064] In some embodiments, the wireless communication device may determine n based on a hopping pattern / sequence. offset The wireless communication device may determine n (e.g., based on a hopping pattern) at a granularity of symbol level, slot level, resource level, resource set level, and / or frequency hopping period in the time domain. offset The wireless communication device can determine n according to the hopping pattern represented by the following formula: offset The value(s) of:

[0065] n offset =(n′ offset +k′)mod P F

[0066] In some embodiments, n′ offset May include or correspond to an offset component. offset The value of and / or P F The value of may be configured via RRC signaling (or other types of high-level signaling). The parameter k′ may specify / indicate / correspond to a hopping sequence value. In some embodiments, k′ may be changed (or adjusted) according to at least one of the following hopping sequences:

[0067] 1) If P F is equal to 2, then k′={0,1}

[0068] 2) If P Fis equal to 3, then k′={0,2,1}

[0069] 3) If P F is equal to 4, then k′={0,2,1,3}

[0070] 4) If P F is equal to 8, then k′={0,4,2,6,1,5,3,7}

[0071] 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, k' may change after the SRS transmission has undergone a complete round of hopping in the frequency domain.

[0072] In some embodiments, the parameter k F The frequency domain shift value for partial frequency SRS transmission may be indicated / specified / provided. The wireless communication device may obtain / determine k according to (or by using) at least one of the following methods: F Values:

[0073] 1) The wireless communication device may determine / configure / identify / select k according to (or based on) high-level signaling (e.g., RRC signaling and / or MAC-CE signaling). F For example, k from higher layer signaling can be used F ∈{1,2,…,P F} to select at least one value of k F to configure.

[0074] 2) The wireless communication device may determine k through a configuration received via higher layer signaling (eg, RRC signaling and / or MAC-CE signaling). F The configuration may indicate / provide / specify multiple candidate values. For example, the wireless communication device may determine k from multiple candidate values ​​indicated by the received configuration. F In response to receiving the configuration (eg, multiple candidate values), the wireless communication device may determine k based on (or by using) the DCI. F For example, a wireless communication device may receive a DCI, wherein the DCI indicates / provides / specifies k from a plurality of candidate values. F The value of .

[0075] 3) In some embodiments, k F (and / or P F ) may not be configured with multiple candidate values ​​and / or at least one value (e.g., indicated by higher layer parameters / signaling). F In the case of high-level signaling providing / specifying one or more candidate values), the wireless communication device may determine kF The value of is 1.

[0076] In some embodiments, the wireless communication device may determine k based on a hopping pattern / sequence. F The wireless communication device may determine k (e.g., based on a hopping pattern) at a granularity of symbol level, slot level, resource level, resource set level, and / or a frequency hopping period in the time domain. F The wireless communication device can determine k based on the hopping pattern represented by the following equation: F The value(s) of:

[0077] k F =(k′ F +k′)mod P F

[0078] In some embodiments, k F The value of and / or P F The value of may be configured (e.g., by a wireless communication node) via RRC signaling (or other types of higher layer signaling). The parameter k′ may specify / indicate / correspond to a hopping sequence value. In some embodiments, k′ may be changed (or adjusted) according to at least one of the following hopping sequences:

[0079] 1) If P F is equal to 2, then k′={0,1}

[0080] 2) If P F is equal to 3, then k′={0,2,1}

[0081] 3) If P F is equal to 4, then k′={0,2,1,3}

[0082] 4) If P F is equal to 8, then k′={0,4,2,6,1,5,3,7}

[0083] 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, k' may be changed / modified after the SRS transmission has undergone a complete round of hopping in the frequency domain.

[0084] II. Scheme B

[0085] Certain systems (e.g., NR Rel-15) may support (e.g., by a wireless communication node) triggering (one or more) aperiodic SRS resource sets using DCI to enable dynamic UL / DL channel measurement. However, current system support for triggering (one or more) aperiodic SRS resource sets using DCI may be limited. These limitations may result in congestion of PDCCH, DCI and / or reference signal (RS) overhead, and / or excessive power consumption of wireless communication devices (e.g., UEs). Possible solutions to these problems may include enhancing the flexibility of the network when triggering aperiodic SRS.

[0086] In some embodiments, a given aperiodic SRS resource set may be transmitted / sent / broadcasted / transmitted in the (t+1)th available time slot relative to the reference time slot. The parameter t may specify / indicate / provide a value for the time 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., if only one value of t is configured via RRC signaling). In some embodiments, candidate values ​​of t may include 0 (or other values). In some embodiments, the reference time slot may be defined / configured according to the following options:

[0087] • Option 1: The reference time slot may include or correspond to the time slot with the triggering DCI.

[0088] Option 2: The reference time slot may include or correspond to a trigger offset defined by (e.g., a legacy trigger offset)

[0089] Indicates the time slot.

[0090] In some embodiments, option 1 may be a subset of option 2. Certain embodiments may employ option 2 to define / configure reference time slots, while option 1 may be a basic feature for supporting trigger offset enhancement. For example, the capability of a wireless communication device may support trigger offset enhancement to determine / identify / configure an SRS transmission time slot (e.g., option 1) based on a reference time slot in which a DCI triggering 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 configuring a defined trigger offset with at least one non-zero value. When using trigger offset enhancement (e.g., Rel-17 trigger offset enhancement) (e.g., to determine an SRS transmission time slot), the wireless communication device may support configuring a defined trigger offset with at least one non-zero value.

[0091] In some embodiments, the capabilities of the wireless communication device may not support (or the wireless communication device may not report support) configuring a defined trigger offset with at least one non-zero value. If the capabilities of the wireless communication device do not support configuring a defined trigger offset with at least one non-zero value, a zero value may be used to configure the defined trigger offset. For example, when trigger offset enhancement is used to determine the SRS transmission time slot (e.g., when a list of time slot offset values ​​t is configured), a zero value may be used to configure the defined trigger offset. In this example, the time slot with the triggering DCI may include or correspond to a reference time slot.

[0092] In some embodiments, the capabilities of the wireless communication device may support (or the wireless communication device may report support for) configuring a defined trigger offset with at least one non-zero value. If the capabilities of the wireless communication device support configuring a defined trigger offset with at least one non-zero value, the defined trigger offset may be configured with a non-zero value. For example, when trigger offset enhancement is used to determine the SRS transmission time slot (e.g., when a list of time slot offset values ​​t is configured), the defined trigger offset may be configured with a non-zero value. In this example, the time slot indicated by the defined trigger offset (e.g., the traditional trigger offset) may include or correspond to a reference time slot.

[0093] A. Capabilities of wireless communication devices with respect to the value of slot offset (t)

[0094] The wireless communication node may configure one or more values ​​of the slot offset (t) for the resource set via RRC signaling (or other types of higher layer signaling). In some embodiments, the wireless communication device may report / provide (e.g., via a report message to the wireless communication node) a maximum number of values ​​of the 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 sent / transmitted in the (t+1)th available time slot relative to the reference time slot.

[0095] B. The DCI indicates the value of the slot offset (t)

[0096] In some embodiments, DCI (e.g., DCI format 0_1 / DCI format 0_2 without data and / or CSI) may support the option of using / reusing an unused field of DCI, and / or using / defining / configuring a dedicated field (e.g., a new field) of DCI to indicate / specify / provide at least one value of a slot offset (t) for a resource set. If the dedicated field is configured to indicate (e.g., indicated by a wireless communication node) at least one value of t, the wireless communication device may ignore (e.g., not expect 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 expect to find) the dedicated field of DCI.

[0097] III. Scheme C

[0098] In some embodiments (e.g., for non-periodic antenna switching SRS), the capabilities of the wireless communication device may support configuration of 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) to be 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, at least K resources may be allocated in N resource sets based on RRC configuration.

[0099] • In some embodiments, for 1T6R, K=6, N_max=[4], and / or each resource has 1 port.

[0100] • In some embodiments, for 1T8R, K=8, N_max=[4], and / or each resource has 1 port.

[0101] • In some embodiments, for 2T6R, K=3, N_max=[3], and / or each resource has 2 ports.

[0102] • In some embodiments, for 2T8R, K=4, N_max=[4], and / or each resource has 2 ports.

[0103] • In some embodiments, for 4T8R, K=2, N_max=[2], and / or each resource has 4 ports.

[0104] The number of candidate values ​​of N supported by each xTyR is left for future study.

[0105] In some embodiments (e.g., for each supported xTyR), the wireless communication device may report / provide / specify / indicate (e.g., via a report message) a value of N_max and / or the number of supported values ​​of the number of resource sets (N) to be 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 / notify supported values ​​of N.

[0106] IV. Scheme D

[0107] In some embodiments, some systems (e.g., Rel-17) may enhance / improve / increase the capacity and / or coverage of SRS according to (or based on) at least one of the following options:

[0108] Option 1: Increase the maximum number of repeated symbols in one slot and / or one SRS resource.

[0109] Option 2: Supporting SRS transmission in some consecutive resource blocks (RBs) in at least one orthogonal frequency-division multiplexing (OFDM) symbol.

[0110] Option 3: Introduce support for comb 8.

[0111] A. Option 1: About added repetitions

[0112] In some embodiments, the wireless communication device may maintain phase continuity during a plurality of repeated symbols. The wireless communication device (e.g., UE) may report / specify / indicate (e.g., via a report message) a maximum number of repeated symbols in an SRS resource. For example, the wireless communication device may report (e.g., to a wireless communication node): a maximum number of repeated symbols over which the wireless communication device can maintain phase continuity.

[0113] B. Option 2 and Option 3: Regarding fractional frequency SRS transmission and comb 8

[0114] In some embodiments, the wireless communication device may perform / enable power boosting for Resource Block Level Partial Frequency Sounding (RPFS) and / or comb 8. The wireless communication device may report / specify / indicate the maximum comb value, the maximum value of the power boost for RPFS, and / or the partial frequency factor (PFF). F). For example, the wireless communication device may report the maximum value of the power boost and the maximum comb value. In another example, the wireless communication device may report P F In another example, the wireless communication device may report / indicate P F The comb value may specify / indicate the number of subcarriers in all subcarriers (e.g., 12 subcarriers) of an RB used to transmit at least one SRS. In some embodiments, P may be reported in a range of every m_SRS (the number of RBs for SRS transmission in the frequency domain). F In some embodiments, the wireless communication device may report / provide a minimum number of SRS RBs in one hop and / or in one 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 one hop and / or in one OFDM symbol.

[0115] V. Scheme E

[0116] In some embodiments, the transmit power control (TPC) command of the DCI may be used for SRS power control. Using the TPC command may avoid large fluctuations / changes in SRS power between symbols, between resources, and / or between resource sets. In some embodiments, one or more rules may be predefined / predetermined / configured between the wireless communication node and the wireless communication device:

[0117] 1) It can be expected that the wireless communication device receives / obtains the same TPC command between SRS repetition symbols.

[0118] If the wireless communication device receives different / separate / different TPC command values ​​on different / separate / different SRS repetition symbols, the value of the TPC command on the first SRS repetition symbol may be applied to other SRS repetition symbols included in the same time slot, SRS resource, and / or SRS resource set. If different / different TPC command values ​​are demodulated on different SRS repetition symbols, the TPC command value on the first SRS repetition symbol may be applied to other SRS repetition symbols included in the same time slot, SRS resource, and / or SRS resource set. If different TPC command values ​​are applied to different SRS repetition symbols, the TPC command value on the first SRS repetition symbol may be applied to other SRS repetition symbols included in the same time slot, SRS resource, and / or SRS resource set.

[0119] • It may be expected that the wireless communication device does not receive / obtain a TPC command value and / or does not apply a new TPC command value to a plurality of SRS repetition symbols (in the time domain) that may be included in the same time slot, SRS resource, and / or SRS resource set.

[0120] 2) It can be expected that the wireless communication device receives / obtains the same TPC command between multiple SRS resources in the same SRS resource set.

[0121] If the wireless communication device receives different / separate / non-identical 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 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 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 other SRS resources included in the same SRS resource set.

[0122] • It may be expected that the wireless communication device does not receive / obtain a TPC command value, and / or does not apply a new TPC command value to a plurality of SRS resources included in the same SRS resource set.

[0123] 3) When the usage parameters (e.g., in SRS-ResourceSet) of the wireless communication device are configured as 'antenna switching' via high-layer signaling, the wireless communication device can be expected to receive / acquire the same TPC command between different SRS resource sets. For example, the wireless communication device can be configured with configuration 't1r4' for 1T4R, or configuration 't1r8' for 1T8R (e.g., depending on the capabilities of the wireless communication device).

[0124] If the wireless communication device receives / acquires different TPC command values ​​on different SRS resource sets, the TPC command value on the first SRS resource set may be applied to other SRS resource sets belonging to the same purpose. If different / separate TPC command values ​​are demodulated on different SRS resource sets, the value of the TPC command on the first SRS resource set may be applied to other SRS resource sets belonging to the same purpose. If different TPC command values ​​are applied to different SRS resource sets, the value of the TPC command on the first SRS resource set may be applied to other SRS resource sets belonging to the same purpose.

[0125] • It may be expected that the wireless communication device does not receive / obtain a TPC command value, and / or does not apply a new TPC command value to multiple SRS resource sets belonging to the same purpose (in the time domain).

[0126] VI. Scheme F

[0127] In some embodiments, the wireless communication device and / or wireless communication node may support one or more of the following configurations (e.g., to improve / enhance configuration flexibility). Parameter (N_symbol) 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.

[0128] N_symbol = 8, R = 2

[0129] N_symbol = 8, R = 4

[0130] N_symbol = 8, R = 8

[0131] N_symbol = 10, R = 2

[0132] N_symbol = 10, R = 10

[0133] N_symbol = 12, R = 2

[0134] N_symbol = 12, R = 4

[0135] N_symbol = 12, R = 12

[0136] N_symbol = 14, R = 2

[0137] N_symbol = 14, R = 14

[0138] In some embodiments, the ratio of N_symbol to R may be an integer value. In some embodiments, high-level signaling (e.g., RRC signaling and / or MAC-CE signaling) and / or DCI may indicate / provide / specify the value of N_symbol and / or the value of R. For example, the above 10 configurations may be indicated / specified by using at least 4 bits (or other number of bits) in RRC signaling (or other types of signaling). In some embodiments, the configuration corresponding to N_symbol=10, R=5 may be indicated by signaling.

[0139] VII. Scheme G

[0140] In some embodiments, multiple transmit (Tx) switching configurations may be supported. In some embodiments, a wireless communication device may report support for multiple Tx switching configurations (e.g., support for both 1T8R and 1T6R). At least two methods may be used to determine the Tx switching configuration of a wireless communication device.

[0141] A. Method 1

[0142] Multiple SRS resource sets may be divided / split / organized / classified into at least two groups, corresponding 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 1T8R or 1T6R. In some embodiments, at least one RRC parameter may be used to label / classify an SRS resource set corresponding to 1T6R, and / or an SRS resource set corresponding to 1T8R. The wireless communication node may indicate a label / classification in a DCI (e.g., to reduce DCI overhead).

[0143] B. Method 2

[0144] In some embodiments, the wireless communication device may determine whether (one or more) SRS resource sets and / or (one or more) SRS resources correspond to 1T6R or 1T8R based on (or according to) the number / amount of resource sets and / or resources triggered by the wireless communication node.

[0145] VIII. Scheme H

[0146] The wireless communication device may indicate / specify / report whether the wireless communication device supports configuration using the same SRS resources and / or SRS resource sets for multiple purposes. If the wireless communication device fails to report this capability, other behaviors (e.g., Rel-15 behavior and / or Rel-16 behavior) are maintained. In some embodiments, RRC parameters (or other parameters) may enable this feature 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 purposes may be determined based on the configuration of the wireless communication node based on whether the same set ID and / or resources are used for different purposes.

[0147] IX. Sounding Reference Signal Transmission

[0148] Figure 4 A flow chart of a method 450 for transmitting a sounding reference signal is shown. The method 450 may be used in conjunction with Figures 1 to 3The method 450 may be implemented by any one of the components and devices described in detail. In summary, the method 450 may include receiving configuration information for SRS transmission (452). The method 450 may include sending the SRS according to the configuration information (454).

[0149] Referring now to operation (452), and in some embodiments, a wireless communication device (e.g., UE) may receive / obtain / acquire configuration information for SRS transmission from a wireless communication node (e.g., gNB). The wireless communication node may send / transmit / broadcast / transmit 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 a starting position in the frequency domain for transmitting the SRS according to (or based on) an offset parameter (n offset ), partial frequency factor (P F ), and / or other information to determine the starting position. In some embodiments, the wireless communication device may transmit / send the SRS as a partial frequency SRS transmission.

[0150] In some embodiments, the wireless communication device may offset With P F ratio (e.g. ) to determine / identify / configure the starting position. In some embodiments, the wireless communication device may determine / configure / identify / select P from a predetermined list of values ​​(e.g., from {2, 3, 4, 8} and / or from {2, 4, 8}). F In some embodiments, the wireless communication device may determine P by receiving / obtaining a configuration indicating / specifying / providing a plurality of candidate values. F The wireless communication device may receive the configuration via high-level signaling (e.g., RRC signaling, MAC-CE signaling, and / or other types of signaling). In some embodiments, the wireless communication device may determine P by receiving / obtaining / analyzing DCI (or other information). F The DCI can indicate / specify / provide / identify P from multiple candidate values. F The value of .

[0151] In some embodiments, higher layer signaling (eg, RRC signaling) may not be P F Provides / specifies / indicates one or more candidate values. In the absence of F In the case of high-level signaling providing one or more candidate values, the wireless communication device may determine P F The value of n is 1 (or other values). In some embodiments, the wireless communication device can determine / identify / configure n from (or according to) high-level signaling. offsetIn some embodiments, the wireless communication device may determine n by receiving / obtaining a configuration offset The configuration may indicate / specify / provide multiple candidate values. The wireless communication device may receive the configuration via high-level signaling (e.g., RRC signaling or other types of signaling). In some embodiments, the wireless communication device may determine n by receiving / obtaining / analyzing DCI. offset The DCI may indicate / provide / specify n from (or based on) the multiple candidate values. offset In some embodiments, the high-level signaling may not be n offset Provides / indicates one or more candidate values. In the absence of n offset In the case of high-level signaling providing one or more candidate values, the wireless communication device may determine n offset The value of is 0 (or other value).

[0152] In some embodiments, the wireless communication device may determine n according to (or based on) a hopping pattern of a specific granularity. offset The specific granularity may include or correspond to a symbol level, a time slot level, a resource level, a resource set level and / or a frequency hopping period in the time domain. The hopping pattern may be represented as: n offset =(n′ offset +k′)mod P F In some embodiments, n′ offset May include or correspond to an offset component. n' offset It 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, if P F =2 (or other values), k′ may be changed according to (or based on) the hopping sequence {0,1}. In some embodiments, if P F =3 (or other values), k′ may be changed according to (or based on) the hopping sequence {0, 2, 1}. In some embodiments, if P F = 4 (or other values), k′ may be changed according to the hopping sequence {0, 2, 1, 3}. In some embodiments, if P F If k is equal to 8 (or other values), then k′ can be changed according to the hopping sequence {0, 4, 2, 6, 1, 5, 3, 7}. offset The associated / related hopping patterns can be based on the frequency hopping period in the time domain. offset The associated hopping pattern has a granularity of a frequency hopping period in the time domain, so k′ can be changed / modified / adjusted after the SRS transmission has undergone a complete round of hopping in the frequency domain.

[0153] In some embodiments, the wireless communication device may transmit / send / transmit 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 capability may include supporting trigger offset enhancement. The capability may include supporting trigger offset enhancement to determine / configure the SRS transmission time slot according to (or based on) a reference time slot, triggering / causing the DCI of the SRS (e.g., aperiodic SRS) to be received within the reference time slot. In some embodiments, trigger offset enhancement may be used. When trigger offset enhancement is used, the report message may include / provide / specify: whether the wireless communication device supports configuring a defined trigger offset (e.g., a traditional trigger offset) with at least one non-zero value.

[0154] In some embodiments, the report message may not include / omit any indication of support for configuring a defined trigger offset with at least one non-zero value. When the report message does not include any indication of support for configuring a defined trigger offset with at least one non-zero value, a zero value may be used to configure the defined trigger offset. In some embodiments, the report message may include / provide / specify an indication of support for configuring a defined trigger offset with at least one non-zero value. When the report message includes / provides an indication of support for configuring a defined trigger offset with at least one non-zero value, a non-zero value may be used to configure the defined trigger offset. In some embodiments, the report message may include / specify / provide / indicate a value for the maximum number of time slot offsets (t) for a resource set. In some embodiments, the report message may include / indicate / provide a maximum value of t for a resource set. In some embodiments, an SRS resource set may be transmitted / sent / transmitted in the (t+1)th available time slot relative to a reference time slot.

[0155] In some embodiments, the DCI may support the option of using an unused field and / or using a dedicated field (e.g., a new dedicated field) to indicate / specify / provide at least one value of a time slot offset (t) for a resource set. In some embodiments, if the dedicated field is configured to indicate / provide / specify the 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 / specify the at least one value of t, the wireless communication device may ignore the dedicated field. In some embodiments, the report message may include / specify / indicate at least one of the following: the maximum number of configured resource sets (N_max), and / or the number of supported values ​​of the number of resource sets (N) to be configured by the wireless communication device, where N≤N_max. In some embodiments, the report message may include / provide / specify / indicate the maximum number of repeated symbols over which the wireless communication device can maintain phase continuity. In some embodiments, the report message may include at least one of the following: a fractional frequency factor (P F ), maximum comb value, and / or maximum power boost.

[0156] In some embodiments, it is expected that the wireless communication device receives / acquires the same / corresponding TPC command between multiple SRS repetition symbols. In some embodiments, it is expected that the wireless communication device receives / acquires the same / corresponding TPC command between multiple SRS resources in the same SRS resource set. In some embodiments, when the usage parameter of the wireless communication device is configured as 'antenna switching' via high-layer signaling (e.g., RRC signaling or other types of signaling), it is expected that the wireless communication device receives / acquires the same TPC command between different / different / separate SRS resource sets.

[0157] Now referring to operation (454), and in some embodiments, the wireless communication device may transmit / send / broadcast / transmit the SRS to the wireless communication node according to (or based on) the configuration information. The wireless communication node may receive / acquire the SRS from the wireless communication device according to (or based on) the configuration information. In some embodiments, the configuration information may be received / acquired 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 the following indications: the total number of OFDM symbols (N_symbols) in one SRS resource, and / or the repetition factor (R). In some embodiments, the ratio of N_symbols to R is an integer value. In some embodiments, the configuration information may be received / acquired from the wireless communication node via RRC signaling (or other types of high-layer signaling). In some embodiments, the RRC signaling may include / provide / specify at least one indicator that associates / links / marks one of a plurality of transmission switching configurations (e.g., Tx switching configurations such as 1T8R and 1T6R) with at least one SRS resource and / or SRS resource set.

[0158] Although various embodiments of the present solution have been described above, it should be understood that these embodiments are presented only as examples and not as limitations. Similarly, various schematic diagrams may illustrate exemplary architectures or configurations, which are provided so that those of ordinary skill in the art can understand the exemplary features and functions of the present solution. However, those of ordinary skill in the art will understand that the solution is not limited to the example architectures or configurations shown, but may be implemented using various alternative architectures and configurations. In addition, as those of ordinary skill in the art will understand, one or more features of an embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the above-described exemplary embodiments.

[0159] It should also be understood that any reference to an element using names such as "first," "second," etc. herein generally does not limit the number or order of these elements. Instead, these names may be used herein as a convenient means of distinguishing two or more elements or instances of elements. Thus, reference to a first and a second element does not mean that only two elements may be used, or that the first element must precede the second element in some manner.

[0160] In addition, 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 referenced in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0161] Those of ordinary skill in the art will further understand that any of the various exemplary logic blocks, modules, processors, devices, circuits, methods, and functions described in conjunction with the various aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of both), firmware, various forms of programs or design codes in conjunction with instructions (which, for convenience, may be referred to herein as "software" or "software modules"), or any combination of these technologies. In order to clearly illustrate this interchangeability of hardware, firmware, and software, various exemplary components, blocks, modules, circuits, and steps have been described above generally in terms of their functions. Whether such functionality is implemented using hardware, firmware, software, or a combination thereof depends on the specific application and the design constraints imposed on the overall system. Technicians may implement the described functionality in various ways for each specific application, but such implementation decisions will not result in a departure from the scope of the present disclosure.

[0162] Further, it will be appreciated by those of ordinary skill in the art that the various exemplary logic blocks, modules, devices, components, and circuits described herein may be implemented within or performed by an integrated circuit (IC), which may include a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device or any combination thereof. The logic blocks, modules, and circuits may also include antennas and / or transceivers to communicate with various components within a network or within a device. A general purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration that performs the functions described herein.

[0163] If implemented in software, these functions can be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media include computer storage media and communication media, and communication media include any medium that can allow a computer program or code to be transferred from one location to another. The storage medium can be any available medium that a computer can access. As an example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other medium that can be used to store the required program code in the form of instructions or data structures and can be accessed by a computer.

[0164] In this document, the term "module" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the relevant functions described herein. In addition, for the purpose of discussion, various modules are described as discrete modules; however, as is clear to one of ordinary skill in the art, two or more modules can be combined into a single module that performs relevant functions according to embodiments of the present solution.

[0165] In addition, memory or other storage devices and communication components can be used in embodiments of the present solution. It should be understood that, for the sake of clarity, the above description refers to the embodiments of the present solution described with reference to different functional units and processors. However, it is apparent that any appropriate functional distribution can be used between different functional units, processing logic elements or domains without detracting from the present solution. For example, the functions performed by a separate processing logic element or controller shown can be performed by the same processing logic element or controller. Therefore, reference to a specific functional unit is only a reference to an appropriate means for providing a function, rather than indicating a strict logical or physical structure or organization.

[0166] Various modifications to the embodiments described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the embodiments shown herein, but rather to be given the broadest scope consistent with the novel features and principles disclosed herein, as set forth in the claims.

Claims

1. A wireless communication method, comprising: The wireless communication device receives configuration information for sounding reference signal (SRS) transmission from the wireless communication node; as well as The wireless communication device sends an SRS to the wireless communication node according to the configuration information; as well as The wireless communication device uses an offset parameter n offset and the partial frequency factor P F To determine the starting position in the frequency domain for transmitting the SRS, wherein the P F Configured via higher layer signaling, or default value.

2. The method according to claim 1, wherein: The starting position in the frequency domain is used for transmitting the SRS, which is transmitted as a partial frequency SRS transmission.

3. The method according to claim 1, comprising: The wireless communication device offset With the P F The starting position is determined by a function of the ratio.

4. The method according to claim 1, comprising: In the absence of the P F In the case of high-level signaling providing one or more candidate values, the wireless communication device determines the P F The value of is 1.

5. The method according to claim 1, comprising: The wireless communication device determines the n according to a hopping pattern with a frequency hopping period in the time domain as a granularity. offset At least one value of , the transition pattern is represented by: n offset =(n ′ offset +k ′ )towards P F , Among them, the n ′ offset is an offset component configured via radio resource configuration RRC signaling, and the k ′ is the hopping sequence value.

6. The method according to claim 5, wherein: The k ′ Changes according to the following hopping sequence: If P F is equal to 2, the hopping sequence is {0,1}, or If P F is equal to 4, and the hopping sequence is {0, 2, 1, 3}.

7. A wireless communication method, comprising: The wireless communication node sends configuration information for sounding reference signal SRS transmission to the wireless communication device; as well as The wireless communication node receives an SRS from the wireless communication device according to the configuration information, The starting position in the frequency domain for transmitting the SRS is determined according to the offset parameter n. offset and the partial frequency factor P F To determine, where the P F Configured via higher layer signaling, or default value.

8. The method according to claim 7, wherein: The starting position in the frequency domain is used for transmitting the SRS, which is transmitted as a partial frequency SRS transmission.

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

10. The method according to claim 7, wherein: In the absence of the P F In the case of high-level signaling providing one or more candidate values, the P F The value of is determined to be 1.

11. The method according to claim 7, wherein: The offset At least one value of is determined according to a hopping pattern with a frequency hopping period in the time domain as a granularity, and the hopping pattern is expressed as: n offset =(n ′ offset +k ′ )towards P F , Among them, the n ′ offset is an offset component configured via radio resource configuration RRC signaling, and the k ′ is the hopping sequence value.

12. The method according to claim 11, wherein: The k ′ Changes according to the following hopping sequence: If P F is equal to 2, the hopping sequence is {0,1}, or If P F is equal to 4, and the hopping sequence is {0, 2, 1, 3}.

13. A wireless communication node, comprising: at least one processor, the at least one processor being configured to: Sending, via the transceiver, configuration information for sounding reference signal (SRS) transmission to the wireless communication device; receiving an SRS from the wireless communication device via the transceiver according to the configuration information, The starting position in the frequency domain for transmitting the SRS is determined according to the offset parameter n. offset and the partial frequency factor P F To determine, where the P F Configured via higher layer signaling, or default value.

14. The wireless communication node according to claim 13, wherein: The starting position in the frequency domain is used for transmitting the SRS, which is transmitted as a partial frequency SRS transmission.

15. A wireless communication device, comprising: at least one processor, the at least one processor being configured to: receiving, via a transceiver, configuration information for sounding reference signal (SRS) transmission from a wireless communication node; sending an SRS to the wireless communication node via the transceiver according to the configuration information; as well as According to the offset parameter n offset and the partial frequency factor P F To determine the starting position in the frequency domain for transmitting the SRS, wherein the P F Configured via higher layer signaling, or default value.

16. The wireless communication device according to claim 15, wherein: The starting position in the frequency domain is used for transmitting the SRS, which is transmitted as a partial frequency SRS transmission.

17. The wireless communication device according to claim 15, wherein: The at least one processor is configured to: According to the offset With the P F The starting position is determined by a function of the ratio.

18. The wireless communication device according to claim 15, wherein: The at least one processor is configured to: In the absence of the P F In the case of high-level signaling providing one or more candidate values, determining the P F The value of is 1.

19. The wireless communication device according to claim 15, wherein: The at least one processor is configured to: The n is determined according to a hopping pattern with a frequency hopping period in the time domain as the granularity. offset At least one value of , the transition pattern is represented by: n offset =(n ′ offset +k ′ )towards P F , Among them, the n ′ offset is an offset component configured via radio resource configuration RRC signaling, and the k ′ is the hopping sequence value.

20. The wireless communication device according to claim 19, wherein: The k ′ Changes according to the following hopping sequence: If P F is equal to 2, the hopping sequence is {0,1}, or If P F is equal to 4, and the hopping sequence is {0, 2, 1, 3}.

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