Power adjustment for demodulation reference signals

Abstract

Example embodiments of the present disclosure relate to a solution for power adjustment of demodulation reference signals (DMRS). A method includes receiving, from a second apparatus, configuration information comprising an indication of whether variable power boosting is required, determining, in accordance with a determination that the indication indicates that variable power boosting is applied, at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first apparatus, and applying the at least one amplitude scaling parameter to a DMRS transmission or a DMRS reception.

Description

Cross-reference to related applications

[0001] This application claims priority and benefit to Indian Patent Application No. 202541036334, filed on April 15, 2025, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0002] Various exemplary embodiments of this disclosure generally relate to the telecommunications field, and more particularly to methods, apparatus, devices, and computer-readable storage media for power adjustment of demodulation reference signals (DMRS). Background Technology

[0003] In cellular systems, the Physical Uplink Shared Channel (PUSCH) is the physical uplink (UL) channel that carries user data. The Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS) are reference signals associated with the PUSCH. The DMRS is used for channel estimation as part of the coherent demodulation of the PUSCH. The PTRS is introduced to compensate for the common phase error (CPE), particularly in the high-frequency band (frequency range 2, FR2). The time-frequency structure of the reference signals depends on the type of waveform configured for the PUSCH. Summary of the Invention

[0004] In a first aspect of this disclosure, a first apparatus is provided. The first apparatus includes: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus to: receive configuration information from a second apparatus, the configuration information including an indication of whether a variable power boost is required; instruct the application of a variable power boost based on determining the indication; determine at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first apparatus; and apply the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0005] In a second aspect of this disclosure, a second apparatus is provided. The second apparatus includes: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second apparatus to: send configuration information to a first apparatus, the configuration information including an indication of whether a variable power boost is required for the first apparatus; instruct the application of a variable power boost based on determining the indication; determine at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first apparatus; and apply the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0006] In a third aspect of this disclosure, a method is provided. The method includes: receiving configuration information from a second device, the configuration information including an indication of whether a variable power boost is required; instructing the application of a variable power boost based on determining the indication; determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to a first device; and applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0007] In a fourth aspect of this disclosure, a method is provided. The method includes: sending configuration information to a first device, including an indication of whether a variable power boost is needed for the first device, based on determining that an indication is intended to apply a variable power boost; determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device; and applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0008] In a fifth aspect of this disclosure, a first apparatus is provided. The first apparatus includes: means for receiving configuration information from a second apparatus, the configuration information including an indication of whether a variable power boost is required; means for determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first apparatus, based on determining the indication to instruct the application of a variable power boost; and means for applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0009] In a sixth aspect of this disclosure, a second apparatus is provided. The second apparatus includes: means for transmitting configuration information to a first apparatus, the configuration information including an indication of whether a variable power boost is required for the first apparatus; means for determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first apparatus, based on determining the indication to instruct the application of the variable power boost; and means for applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0010] In a seventh aspect of this disclosure, a computer-readable medium is provided. The computer-readable medium includes instructions stored thereon for causing a device to perform at least the method according to a third or fourth aspect.

[0011] It should be understood that the summary portion is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0012] Some exemplary embodiments will now be described with reference to the accompanying drawings, in which: Figure 1 An example communication environment in which example embodiments of this disclosure may be implemented is shown; Figure 2 An example DMRS transmission mode is shown; Figure 3 Example signaling flows for communication are shown according to some example embodiments of this disclosure; Figure 4A Example signaling flows for communication are shown according to some example embodiments of this disclosure; Figure 4B An example box for generating at least one amplitude scaling parameter is shown; Figure 5 A flowchart is shown illustrating a method implemented at a first device according to some exemplary embodiments of the present disclosure; Figure 6 A flowchart is shown illustrating a method implemented at a second device according to some example embodiments of the present disclosure; Figure 7 A flowchart is shown illustrating a method implemented at a first device according to some exemplary embodiments of the present disclosure; Figure 8 A flowchart is shown illustrating a method implemented at a second device according to some example embodiments of the present disclosure; Figure 9 A simplified block diagram of a device suitable for implementing example embodiments of the present disclosure is shown; and Figure 10 A block diagram of an example computer-readable medium according to some example embodiments of the present disclosure is shown.

[0013] In all the accompanying drawings, the same or similar reference numerals denote the same or similar elements. Detailed Implementation

[0014] The principles of this disclosure will now be described with reference to some exemplary embodiments. It should be understood that these embodiments are described for illustrative purposes only and to help those skilled in the art to understand and implement this disclosure, without implying any limitation on the scope of this disclosure. The embodiments described herein can be implemented in various ways besides the methods described below.

[0015] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0016] References to "an embodiment," "embodiment," "example embodiment," etc., in this disclosure indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment must include that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is to be noted that those skilled in the art will recognize, whether explicitly described or not, that such features, structures, or characteristics apply in conjunction with other embodiments.

[0017] It should be understood that although terms such as "first," "second," etc., preceding nouns may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another, and they do not restrict the order of the nouns. For example, without departing from the scope of the exemplary embodiments, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. As used herein, the term "and / or" includes any and all combinations of one or more of the listed terms.

[0018] As used herein, “at least one of the following: ” and “at least one of ” and similar wording (where the list of two or more elements is connected by “and” or “or”) means at least any one of the elements, or at least any two or more of the elements, or at least all of the elements.

[0019] As used herein, unless explicitly stated otherwise, the execution step “in response to A” does not indicate that the step is performed immediately after “A” occurs, and may include one or more intermediate steps.

[0020] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that, when used herein, the terms “comprising,” “having,” “containing,” and / or “including” specify the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0021] As used in this application, the term "circuit" may refer to one or more or all of the following: (a) Hardware circuit implementation only (such as implementation in purely analog and / or digital circuits) and (b) A combination of hardware circuitry and software, such as (if applicable): (i) A combination of analog and / or digital hardware circuitry with software / firmware, and (ii) Any part of a hardware processor having software (including digital signal processors, software, and memory, which work together to enable a device such as a mobile phone or server to perform various functions), and (c) (Multiple) hardware circuits and / or (multiple) processors, such as (multiple) microprocessors or a portion thereof, which require software (e.g., firmware) to operate, but may not exist when the software is not required to operate.

[0022] This definition of "circuit" applies to all uses of the term in this application (including in any claim). As another example, as used in this application, the term "circuit" also covers implementations of hardware circuitry or processors (or processors) or a portion thereof and their accompanying software and / or firmware. For example, if applicable to a particular claim element, the term "circuit" also covers baseband integrated circuits or processor integrated circuits for mobile devices, or similar integrated circuits in servers, cellular network devices, or other computing or network devices.

[0023] As used herein, the term "communication network" refers to a network that conforms to any suitable communication standard, such as New Radio (NR), Long Term Evolution (LTE), LTE-A Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), Narrowband Internet of Things (NB-IoT), etc. Furthermore, communication between terminal devices and network devices in a communication network can be performed according to any suitable generation of communication protocol, including but not limited to first-generation (1G), second-generation (2G), 2.5G, 2.75G, third-generation (3G), fourth-generation (4G), 4.5G, fifth-generation (5G), sixth-generation (6G) communication protocols and / or any other currently known or future-developed protocols. Embodiments of this disclosure can be applied to a variety of communication systems. Given the rapid development of communications, there will certainly be future types of communication technologies and systems that can implement this disclosure. The scope of this disclosure should not be construed as limited to the aforementioned systems.

[0024] As used herein, the term "network device" refers to a node in a communications network through which terminal devices access the network and receive services. Depending on the terminology and technology applied, a network device can refer to a base station (BS) or access point (AP), such as a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), an NR NB (also known as a gNB), a Remote Radio Unit (RRU), a Radio Head (RH), a Remote Radio Head (RRH), a repeater, an Integrated Access and Backhaul (IAB) node, a low-power node (such as a femtosecond or picosecond), a Non-Terrestrial Network (NTN) or Non-Terrestrial Network device (such as satellite network device, Low Earth Orbit (LEO) satellite and Geostationary Earth Orbit (GEO) satellite, spacecraft network device, etc. In some example embodiments, the Radio Access Network (RAN) split architecture includes a centralized unit (CU) and a distributed unit (DU) at the IAB donor node. The IAB node includes a mobile terminal (IAB-MT) portion that behaves similarly to a UE toward its parent node, while the DU portion of the IAB node behaves similarly to a base station toward the next-hop IAB node.

[0025] As used herein, the term "network device" can also refer to a core network (CN) entity / node / function / device / equipment. An example core network node may include one or more of the following functions: Location Management Function (LMF), Mobile Switching Center (MSC), Mobility Management Entity (MME), Home Subscriber Server (HSS), Access and Mobility Management Function (AMF), Session Management Function (SMF), Authentication Server Function (AUSF), Subscription Identifier Dehiding Function (SIDF), Unified Data Management (UDM), Security Edge Protection Agent (SEPP), Network Exposure Function (NEF), and / or User Plane Function (UPF).

[0026] The term "terminal device" refers to any terminal device capable of wireless communication. As an example and not a limitation, a terminal device may also be referred to as a communication device, user equipment (UE), subscriber station (SS), portable subscriber station, mobile station (MS), or access terminal (AT). Terminal devices may include, but are not limited to, mobile phones, cellular phones, smartphones, Voice over IP (VoIP) phones, wireless local loop phones, tablet computers, wearable terminal devices, personal digital assistants (PDAs), portable computers, desktop computers, image capture terminal devices (such as digital cameras), gaming terminal devices, music storage and playback devices, in-vehicle wireless terminal devices, wireless endpoints, mobile stations, laptop embedded devices (LEEs), laptop mounted devices (LMEs), USB dongles, smart devices, wireless customer premises equipment (CPEs), Internet of Things (IoT) devices, watches or other wearable devices, head-mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other wireless devices operating in industrial and / or automated processing chain environments), consumer electronics devices, devices operating on commercial and / or industrial wireless networks, etc. The terminal equipment may also correspond to the mobile termination (MT) portion of an IAB node (e.g., a relay node). In the following description, the terms "terminal equipment," "communication equipment," "terminal," "user equipment," and "UE" are used interchangeably.

[0027] As used herein, the terms “resource,” “transmission resource,” “resource block,” “physical resource block” (PRB), “uplink resource,” or “downlink resource” can refer to any resource used to perform communication (e.g., communication between a terminal device and a network device), such as resources in the time domain, resources in the frequency domain, resources in the spatial domain, resources in the code domain, or any other combination of time, frequency, spatial, and / or code domain resources used to implement communication. In the following, unless explicitly stated otherwise, resources in the frequency and time domains will be used as examples of transmission resources used to describe some exemplary embodiments of this disclosure. Note that the exemplary embodiments of this disclosure are equally applicable to other resources in other domains.

[0028] As discussed, in a cellular system, the PUSCH is the physical UL channel carrying user data. DMRS and PTRS are reference signals associated with the PUSCH. DMRS is used for channel estimation as part of the coherent demodulation of the PUSCH.

[0029] The DMRS uplink configuration is configured in the Information Element (IE) of the Radio Resource Control (RRC) configuration. DMRS- UplinkConfigIt is sent in. Several important variables exist that can be used to configure DMRS. One variable can be the configuration type (1 and 2). Another variable can be a single-symbol or double-symbol DMRS.

[0030] For PUSCH, DMRS-based spatial multiplexing is supported. Up to 8, 12, 16, and 24 orthogonal UL DMRS ports are supported for Type 1, Type 2, Enhanced Type 1, and Enhanced Type 2 DMRS, respectively. For a given UE, up to 4 or 8 layers of transmission are supported.

[0031] In configuration type 1, every other subcarrier is used. Frequency multiplexing can be performed on up to two frequency antenna ports. Additionally, signals can be frequency multiplexed in two code division multiplexing (CDM) groups. If two CDMs are assigned to the same UE, 4x4 MIMO for that UE can be supported. Alternatively, if these CDMs are assigned to two different UEs, a multi-user (MU) MIMO scheme can be used. In configuration type 2, every three subcarriers are used. Therefore, three CDMs can be used.

[0032] Using dual-symbol DMRS, the number of supported ports can be replicated. Therefore, using dual-symbol DMRS and configuration 2, up to 12 antenna ports can be configured, providing greater flexibility for multi-user MIMO. Additional symbols can be configured for more reliable UL reception.

[0033] In this disclosure, the terms “power boost parameter”, “power boost matrix”, “amplitude scaling parameter”, “amplitude scaling matrix” and other similar terms / expressions are used interchangeably.

[0034] The exemplary embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0035] Figure 1 An example communication environment 100 in which exemplary embodiments of the present disclosure may be implemented is shown. The communication environment 100 includes a first device 110 and a second device 120.

[0036] In some solutions, the second device 120 can provide one or more service areas for the first device 110. The service area provided by the second device 120 can be referred to as a cell. Figure 1 In the example, the second device 120 provides cell 102.

[0037] In some example embodiments, the first device 110 may be implemented as a terminal device or included in a terminal device, and the second device 120 may be implemented as a network device serving the terminal device or included in a network device serving the terminal device.

[0038] In the following description, for illustrative purposes, some example embodiments are described in which the first device 110 operates as a terminal device and the second device 120 operates as a network device. However, in some example embodiments, the operations described in connection with the terminal device can be implemented at the network device or other devices, and the operations described in connection with the network device can be implemented at the terminal device or other devices.

[0039] In some example embodiments, if the first device 110 is a terminal device and the second device 120 is a network device, the direction from the second device 120 to the first device 110 is referred to as the downlink (DL), and the direction from the first device 110 to the second device 120 is referred to as the uplink (UL). In the DL, the second device 120 is a transmitting (TX) device (or transmitter), and the first device 110 is a receiving (RX) device (or receiver). In the UL, the first device 110 is a TX device (or transmitter), and the second device 120 is an RX device (or receiver).

[0040] Communication in communication environment 100 can be implemented according to any suitable communication protocol, including but not limited to cellular communication protocols such as first-generation (1G), second-generation (2G), third-generation (3G), fourth-generation (4G), fifth-generation (5G), 5.5G, and sixth-generation (6G), wireless local network communication protocols such as IEEE 802.11, and / or any other currently known or future-developed protocols. Furthermore, communication can utilize any suitable wireless communication technology, including but not limited to: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiple Access (OFDM), Discrete Fourier Transform Extended OFDM (DFT-s-OFDM), and / or any other currently known or future-developed technologies.

[0041] It should be understood that Figure 1 The number of devices and their connections shown are for illustrative purposes only and do not imply any limitation. Communication environment 100 may include any suitable number of devices configured to implement the exemplary embodiments of this disclosure. Although not shown, it will be understood that one or more additional devices or apparatuses may be located in cell 102, and one or more additional cells may be deployed in communication environment 100.

[0042] In wireless communication, when a UE receives scheduling authorization for PUSCH, the number of DMRS CDM groups without data can be dynamically indicated in the downlink control information (DCI). The number of DMRS CDM groups without data determines which resource elements (REs) in the DMRS carrying OFDM symbols are masked from data transmission. This is to avoid interference with pilots from other DMRS CDM groups. The number of CDM groups without data values ​​1, 2, and 3 refers to CDM groups {0}, {0,1}, and {0,1,2}, respectively. For example, if the number of CDM groups without data is 2, this means that REs corresponding to two CDM groups (configured for the UE and not configured for the UE) will remain without PUSCH. However, if the number of CDM groups is 1, only the DMRS symbols configured for the UE remain without data, and other REs with the same time symbols of the DMRS can be used for PUSCH.

[0043] For these configurations, Table 1 specifies the power boost for DMRS symbols to keep the PAPR value of the DMRS symbols the same as that of the data symbols. This is necessary for estimating the power amplifier (PA) response calculated based on the DMRS symbols to remove PA effects from the received data symbols. The difference between the peak-to-average power ratio (PAPR) values ​​of the DMRS and data symbols makes this estimation inaccurate.

[0044] Table 1. Ratio of PUSCH EPRE to DMRS EPRE

[0045] During resource mapping, the configured DMRS (also known as pilots) are mapped to the RE grid along with the data at the UE transmitter and the muted symbols. On the receive / gNB side, the pilots are demapped and used for channel estimation.

[0046] In some solutions, sparse DMRS modes can be defined for both UL and DL data transmission. These modes allow DMRS locations to be distributed across all subcarriers and symbols within the PRB. Figure 2 The diagram shows some example orthogonal DMRS modes that can be used for two co-scheduled UEs in a MU-MIMO scenario or for different layers in a SU-MIMO scenario.

[0047] from Figure 2 It can be seen that the definitions of CDM groups and CDM groups without data in NR are no longer appropriate. The density of DMRS modes can vary depending on the number of orthogonal layers and channel and QoS conditions. Specifically, if the number of orthogonal layers is N, then the muted data RE for each layer will be: muted data RE = (N-1) x the number of DMRS positions in the mode.

[0048] Therefore, the number of REs without data can vary across symbols. Such REs without data or DMRS can lead to PAPR imbalance across time slots, resulting in different effects of PA nonlinearity on the symbols.

[0049] To address at least the aforementioned issues, a power tuning solution for DMRS is proposed, which enables flexible tuning of the DMRSRE's power boost. Using this solution, pilot sparsity in time and frequency can be derived relative to channel selectivity in both the time and frequency domains, while ensuring minimal spectral efficiency degradation. Furthermore, this solution allows the gNB to derive sufficient non-overlapping orthogonal modes for UL or DL ​​data communication.

[0050] First, let's discuss the general principles. In some solutions, when multiple transport layers are allocated the same time and frequency resources, the DMRS REs of any layer are muted to allow data transmission from any other layer. This is to ensure that data transmission from other layers does not interfere with DMRS transmission; otherwise, the interference would affect channel estimation using DMRS. This muting of data REs in the resource grid can cause the PAPR of a DMRS symbol to be lower than that of other data symbols within the time slot. Due to the difference in PAPR, the PA response estimated using DMRS symbols will no longer be used to apply them to data symbols. To eliminate this problem, 5G systems apply a fixed power boost to DMRS symbols to increase the PAPR level to the level of data symbols. As specified in Table 1, the power boost value is fixed for different DMRS configuration types ( .

[0051] intermediate quantity It should be pre-encoded and multiplied by an amplitude scaling factor. To conform to the transmit power, and is mapped to physical resources according to the following formula:

[0052] The parameters are defined as: the precoding matrix Antenna Port Set and antenna port set .

[0053] For example Figure 2 The pilot pattern shown is used to mute data REs in other layers to avoid interference with the DMRS REs of the layer. This results in a pattern similar to... Figure 2The RE grid. Here, due to the random nature of the pilot mode, the pattern of the muted data RE is random, and as a combined effect, the PAPR value of each symbol within the time slot can be random. PAPR fluctuations can be severe in some cases where DMRS is dense, and can be minimal in cases where DMRS is very sparse.

[0054] To address the aforementioned challenges, this disclosure proposes a power adjustment solution for DMRS, namely, a variable power boost for the DMRS RE to keep PAPR fluctuations within limits, enabling more accurate PA response and channel estimation. For some example embodiments, it allows the UE to transmit UL DMRS with the same PAPR as the data symbols when the UL DMRS pattern exhibits random sparsity from one transmission opportunity to another or even within the same transmission opportunity (e.g., from one symbol to another).

[0055] As a foundation, it is assumed that transmission time slots can be configured with fully flexible DMRS modes in both the time and frequency domains, thus departing from the traditional design of DMRS occupying specific OFDM symbols. When such a configuration is applied, different symbols in the time slot can begin to exhibit different PAPR levels, which can subsequently drive the transmit power amplifier (PA) to different operating mechanisms. For example, some symbols may be more distorted than others due to PA nonlinearity. To prevent this from occurring, a more flexible configuration of the transmit power of the DMRS RE is required.

[0056] The power adjustment for each DMRS RE set (which can be as small as a single RE) is determined by the gNB based on at least the following: the DMRS density per symbol, the DMRS density per antenna port, and the MU MIMO scenario (e.g., the number of co-scheduled UL UEs).

[0057] The aforementioned adjustments are configured on the UE side by the gNB via the new IE and / or new DCI fields in the RRC reconfiguration (for faster and / or finer-grained reconfiguration). To achieve this, the UE can also report new UE capabilities that indicate the granularity at which the UE can adjust the power of different REs in a time slot.

[0058] In operation, assume MU MIMO UL transmission, where N UEs are scheduled for simultaneous transmission within the same set of resource elements. Their data transmissions overlap, while their DMRS transmissions remain orthogonal to ensure successful channel estimation. Therefore, the received signal sample corresponding to the UE's DMRS location (after OFDM demodulation) is: , where f() collects the UE's PA response and is typically unknown at gNB. The diagonal channel matrix is ,in This is the number of pilots allocated to UEn. DMRS mask. As a diagonal binary matrix, that is It contains a 1 at the position corresponding to the pilot subcarrier assigned to UEn, and a 0 otherwise. The transmitted pilot signal. Collect the transmitted DMRS of the nth UE, and It is AWGN, therefore, It can be rewritten as: ,in( ) Specifies element-wise multiplication.

[0059] gNB's task is to use a specific autoencoder to determine each user for all n=1:N. The pattern Mn, and optionally or additionally, the DMRS sequence is also determined. This allows the receiver to estimate the combined effect of the propagation channel H and the PA response f().

[0060] It summarizes the equation And it is assumed that different DMRS REs can be assigned different power levels. Therefore, the power boost of a DMRS symbol can be represented by a matrix P. P takes values ​​from R+ (positive real values) at the locations where DMRS REs exist. The remaining entries in P are uniform. The received signal can be: .

[0061] According to some example embodiments of this disclosure, the power boost parameter / amplitude scaling parameter can be calculated by the UE.

[0062] In some example implementations, the power boost parameters may be variable in sign across time slots, but fixed for the DMRS sign. Multiple power boost parameters / multiple amplitude scaling parameters can be derived by the UE from a DMRS mask indicated by the gNB. The gNB can determine whether to apply a variable power boost based on the mask selected for the UE.

[0063] In some example embodiments, the gNB can utilize algorithms to assess the imbalance of DMRS density and power across symbols to determine whether boosting is needed. As one implementation, this decision can be indicated to the UE along with a mask index. In some example embodiments, the power deficiency for a symbol is calculated as (total number of REs - number of muted REs), and the amplitude scaling parameter is used. i = 1.0 + (total number of REs at symbol i - number of muted REs at symbol i) / number of DMRS REs at symbol i, where i It is the DMRS symbol in the time slot.

[0064] When a port-specific DMRS mode is learned, different antenna ports may exhibit different sparsity. In this case, the power boost per DMRS symbol for each antenna port needs to be defined as follows: I，p =1.0 + (total number of REs at symbol i and port p, number of muted REs at symbol i and port p) / number of DMRS REs at symbol i and port p, where i It is the DMRS symbol in the time slot.

[0065] In operation, to instruct the UE to determine / calculate / apply (multiple) power boost parameters / (multiple) amplitude scaling parameters, the gNB can use the DMRS supersequence. To all UEs and UE-specific masks Each UE can obtain at least one amplitude scaling parameter / power boost matrix. Then, each UEn can Applied to The above generates its own UE-specific DMRS signal: .

[0066] here, It is at least one amplitude scaling parameter / power boosting matrix applied to the DMRS symbol within the time slot. Each entry in the matrix corresponds to the power boost value for each DMRS symbol within a time slot. The UE can use the equation i = 1.0 + (total number of REs at symbol i - number of silent REs at symbol i) / number of DMRS REs at symbol i or I，p =1.0 + (Total number of REs at symbol i, number of muted REs at port p and symbol i) / Number of DMRS REs at symbol i and port p from the DMRS mask Export.

[0067] In the following text, reference will be made to Figure 3 This section discusses an example of calculating power boost parameters / amplitude scaling parameters from the UE. Figure 3 Signaling stream 300 for communication according to some embodiments of this disclosure is shown. For discussion purposes, reference will be made to... Figure 1 For example, signaling flow 300 can be discussed by using the first device 110 and the second device 120.

[0068] like Figure 3As shown, the second device 120 sends configuration information (320-1) to the first device 110, and the first device 110 receives the configuration information (320-2) accordingly. The configuration information can be included in any suitable signaling(s) or message(s). For example, the configuration information can be included in Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0069] Specifically, the configuration information includes an indication of whether a variable power boost is required. It should be noted that "whether a variable power boost is required" can refer to "whether a variable power boost is required," "whether a variable power boost is enabled," "whether a variable power boost is configured," and similar wording. As an example, there could be a 1-bit indication, with a value of '1' indicating that a variable power boost is required, and a value of '0' indicating that a variable power boost is not required.

[0070] In some example embodiments, the configuration information may also include other relevant information. In one example, the configuration information may also include a DMRS sequence (also referred to as a supersequence) that is shared by the first device 110 and at least one other first device 110. Alternatively or additionally, in another example, the configuration information may also include a DMRS mask specific to the first device 110. It should be noted that in other example embodiments, the configuration information may include any other relevant information. This disclosure is not limited in this respect. Furthermore, it should be noted that the configuration information may be included in one or more signaling / messages. In summary, this disclosure is not limited in the number of signaling / messages carrying configuration information.

[0071] As can be seen, the second device is responsible for making the decision on whether a variable power boost is needed. In operation, the second device 120 can make the decision based on multiple factors. In one example, the second device 120 can determine (315) whether the first device 110 needs a variable power boost based on a DMRS mask specific to the first device 110.

[0072] In another example, the second device 120 may determine (315) whether the first device 110 requires a variable power boost based on the DMRS density per symbol. In another example, the second device 120 may determine (315) whether the first device 110 requires a variable power boost based on the DMRS density of each line port. In another example, the second device 120 may determine (315) whether the first device 110 requires a variable power boost based on the number of first devices 110 scheduled with the same transmission resources, or the number of layers configured for transmission between the first device 110 and the second device 120. It should be noted that the examples of the above factors are for illustrative purposes only. In other examples, other factors may also be used by the second device 120 to determine whether the first device 110 requires a variable power boost.

[0073] Optionally, according to some embodiments of this disclosure, the new feature of variable power enhancement can be triggered / configured based on UE capabilities. More specifically, such as Figure 3 As shown, the first device 110 can send (305-1) capability-related information to the second device 120, and the second device can correspondingly receive (305-2) capability-related information. In one example, the capability-related information can indicate whether the first device 110 supports variable power boost. Alternatively or additionally, in another example, the capability-related information can indicate the granularity for performing variable power boost supported by the first device 110 (e.g., per RE variable power boost, per symbol variable power boost, per port variable power boost, etc.).

[0074] In one specific implementation, the first device 110 can report power enhancement capability information to the second device 120, and the second device 120 can signal the first device to trigger the generation of a masked DMRS. The second device 120 can evaluate (310) the current application (MU-MIMO) scenario, channel state, mobility conditions, etc. Based on the evaluation results, the second device can transmit a scrambling identifier (SCID) for a supersequence (i.e., a shared sequence shared by more than one UE), and / or can transmit a DMRS mask, i.e., m1, ..., m N , where N is the number of jointly scheduled UEs or jointly scheduled layers. Then, the second device can determine a DMRS mask m specific to the first device 110. v Based on factors specific to the first device 110 and / or all the example factors discussed above, the second device 120 may determine whether the first device 110 requires a variable power boost and send configuration information to the first device 110.

[0075] For the first device 110, if the indication indicates the application of a variable power boost, the first device determines (325) at least one amplitude scaling parameter (also referred to as at least one power boost parameter) based on a DMRS mask specific to the first device 110, and / or the second device determines (327) at least one amplitude scaling parameter (also referred to as at least one power boost parameter) based on a DMRS mask specific to the first device 110. It should be noted that the at least one amplitude scaling parameter can be represented in any suitable format, such as a matrix, a set of vectors, etc. In summary, the exemplary embodiments of this disclosure are not limited in the specific format of the at least one amplitude scaling parameter.

[0076] Further details regarding at least one amplitude scaling parameter will be discussed below.

[0077] In some example embodiments, each of the at least one amplitude scaling parameter may be determined by symbol. Specifically, the at least one amplitude scaling parameter may include a first amplitude scaling parameter corresponding to a DMRS symbol and a second amplitude scaling parameter corresponding to another symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0078] In some example embodiments, the first amplitude scaling parameter corresponding to a DMRS symbol may be determined based on several factors. In one example, the first amplitude scaling parameter may be determined based on the total number of resource elements (REs) associated with the DMRS symbol. In another example, the first amplitude scaling parameter may be determined based on the number of silent REs associated with the DMRS symbol. In yet another example, the first amplitude scaling parameter may be determined based on the number of DMRS REs associated with the DMRS symbol.

[0079] In some example embodiments, at least one amplitude scaling parameter may be specifically determined for a first antenna, at least one additional amplitude scaling parameter may be specifically determined for a second antenna, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0080] In some example embodiments, at least one amplitude scaling parameter specifically for the first antenna may include a first amplitude scaling parameter corresponding to a DMRS symbol. In this case, in some embodiments, the first amplitude scaling parameter may be determined based on the total number of resource elements (REs) associated with the DMRS symbol and the first antenna port. Alternatively or additionally, in some embodiments, the first amplitude scaling parameter may be determined based on the number of silent REs associated with the DMRS symbol and the first antenna port. Alternatively or additionally, in some embodiments, the first amplitude scaling parameter may be determined based on the number of DMRS REs associated with the DMRS symbol and the first antenna port.

[0081] In the following text, both the first device 110 and the second device 120 may apply at least one amplitude scaling parameter to (330) DMRS transmission or DMRS reception.

[0082] For better discussion, the DMRS transmitted from the first device 110 to the second device 120 is referred to as the first DMRS. As an example, the first DMRS may be a DMRS carried in a PUSCH. Furthermore, the DMRS transmitted from the second device 120 to the first device 110 is referred to as the second DMRS. As an example, the second DMRS may be a DMRS carried in a PDSCH.

[0083] First, we will discuss an example regarding the first DMRS. For example... Figure 3 As shown, the first device 110 can determine (340) a first DMRS based on a DMRS mask and at least one power boosting parameter, and send (345-1) the first DMRS to the second device 120. For the second device 120, the second device 120 receives (345-2) the first DMRS determined by the first device 110 at least partially based on the DMRS mask and at least one amplitude scaling parameter, and evaluates (350) the channel state based on the first DMRS sequence. As an example, the gNB receives a PUSCH with a DMRS sequence from the UE, which is generated by the UE based on a DMRS mask allocated by the gNB and a power boosting vector calculated and applied by the UE. This DMRS is used by the gNB for channel estimation; the gNB already knows the supersequence and DMRS mask used by the UE to locally generate the DMRS for channel estimation.

[0084] An example of the first DMRS will be discussed. The second device 120 determines (360) the second DMRS based at least in part on at least one power boosting parameter and transmits (365-1) the second DMRS to the first device 110. For the first device 110, the first device 110 receives (365-2) the second DMRS from the second device 120. The first device 110 may determine (370) the DMRS sequence based on the second DMRS, the DMRS mask, and at least one amplitude scaling parameter; the channel state may then be evaluated (375) based on the DMRS sequence. As an example, the gNB transmits a PDSCH with DMRS boosted by a power boosting vector. The UE removes the power boost and uses the DMRS for channel estimation.

[0085] Furthermore, in this scenario (DL), the UE can locally generate DMRS, such as based on a supersequence and DMRS mask transmitted by the gNB. Specifically, the UE can apply the mask to the supersequence to generate DMRS. When the UE receives a PDSCH with DMRS (generated based on the UE-specific mask and power boost), the UE can remove the power boost from the received DMRS RE.

[0086] Reference Figure 3 The examples discussed differ; according to some example embodiments of this disclosure, the gNB can transmit (multiple) power boost parameters / (multiple) amplitude scaling parameters to the UE. The gNB analyzes the mask selected for the UE (mV) and determines whether to apply variable power boost to that mode. Power Boost Matrix It is transmitted to the UE along with the mask index.

[0087] In operation, to configure DMRS mode, gNB can transmit the DMRS supersequence. Transmitted to all UEs, and includes a UE-specific mask. and power boost matrix The data is transmitted to each UE n. Then, each UE can apply the following: and arrive To generate its own UE-specific DMRS signal, as follows:

[0088] In the following text, reference will be made to Figure 4A This section discusses examples of how the gNB can transmit (multiple) power boost parameters / (multiple) amplitude scaling parameters to the UE. Figure 4A Signaling stream 400A for communication according to some embodiments of this disclosure is shown. For discussion purposes, reference will be made to... Figure 1 For example, signaling flow 400 A can be discussed using the first device 110 and the second device 120.

[0089] As shown in Figure 4, the second device 120 sends configuration information (420-1) to the first device 110, and the first device 110 receives configuration information (420-2) accordingly. The configuration information can be included in any suitable signaling(s) or message(s). For example, the configuration information can be included in RRC signaling, MAC CE, or DCI.

[0090] Specifically, the configuration information includes at least one amplitude scaling parameter and a DMRS mask specific to the first device 110.

[0091] In some example embodiments, the configuration information may also include other relevant information. In one example, the configuration information may also include a DMRS sequence (also referred to as a supersequence) that is shared by the first device 110 and at least one other first device 110.

[0092] Furthermore, it should be noted that configuration information may be included in one or more signaling / messages. In summary, this disclosure is not limited in the number of signaling / messages carrying configuration information.

[0093] It should be noted that at least one amplitude scaling parameter can be represented in any suitable format, such as a matrix, a set of vectors, etc. In summary, the exemplary embodiments of this disclosure are not limited in the specific format of at least one amplitude scaling parameter. Further details regarding at least one amplitude scaling parameter will be discussed below.

[0094] In some example embodiments, at least one amplitude scaling parameter can be determined by the second device 120 based on an artificial intelligence (AI) / machine learning (ML) model. Utilizing AI / ML models, variable power boost can be achieved at the RE level. This solution can be considered where frequency selectivity is important in carrier aggregation and frequency hopping.

[0095] refer to Figure 4B It shows an example box 400B used to generate at least one amplitude scaling parameter. DMRS mode mask. You can use a specific autoencoder to export from the gNB. This DMRS mode is used in PUSCH transmission for UEs with a power amplifier response f(.).

[0096] The gNB uses a training loss calculated at the receiver (BCE, binary cross-entropy) to train the deep neural receiver to find a P matrix of the same size as the DMRS mask. Here, training occurs at the gNB, and the learned P matrix is ​​transmitted to the UE. The channel model used for this learning at the gNB can be the same model used by the specific autoencoder to learn the DMRS mask.

[0097] It should be noted that when training AI / ML models, any suitable parameters can be considered, such as different DMRS masks, the number of UEs / layers that are jointly scheduled, etc.

[0098] In some example embodiments, each of the at least one amplitude scaling parameter may be determined by sign. Specifically, the at least one amplitude scaling parameter may include a first amplitude scaling parameter corresponding to a DMRS sign and a second amplitude scaling parameter corresponding to another sign, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0099] In some example embodiments, at least one amplitude scaling parameter may be specifically determined for a first antenna, at least one additional amplitude scaling parameter may be specifically determined for a second antenna, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0100] As can be seen, the second device is responsible for providing at least one amplitude scaling parameter. In some example embodiments, the second device 120 may determine (415) whether to apply a variable power boost (i.e., whether to provide at least one amplitude scaling parameter) based on multiple factors. In one example, the second device 120 may determine (415) whether the first device 110 requires a variable power boost based on a DMRS mask specific to the first device 110.

[0101] In another example, the second device 120 may determine (415) whether the first device 110 requires a variable power boost based on the DMRS density per symbol. In another example, the second device 120 may determine (415) whether the first device 110 requires a variable power boost based on the DMRS density per antenna port. In another example, the second device 120 may determine (415) whether the first device 110 requires a variable power boost based on the number of first devices 110 scheduled with the same transmission resources, or the number of layers configured for transmission between the first device 110 and the second device 120. It should be noted that the examples of the above factors are for illustrative purposes only. In other examples, the second device 120 may also use other factors to determine whether the first device 110 requires a variable power boost.

[0102] Optionally, according to some embodiments of this disclosure, the new feature of variable power enhancement can be triggered / configured based on UE capabilities. More specifically, such as Figure 3 As shown, the first device 110 can send (405-1) capability-related information to the second device 120, and the second device can correspondingly receive (405-2) capability-related information. In one example, the capability-related information can indicate whether the first device 110 supports variable power boost. Alternatively or additionally, in another example, the capability-related information can indicate the granularity for performing variable power boost supported by the first device 110 (e.g., per RE variable power boost, per symbol variable power boost, per port variable power boost, etc.).

[0103] In one specific implementation, the first device 110 can report power enhancement capability information to the second device 120, and the second device 120 can signal the first device to trigger the generation of the masked DNRS. The second device 120 can evaluate (410) the current application (MU-MIMO) scenario, channel state, mobility conditions, etc. Based on the evaluation results, the second device can transmit a scrambling identifier (SCID) for the supersequence (i.e., a shared sequence shared by more than one UE), and / or can transmit a DMRS mask, i.e., m1, ..., m N , where N is the number of jointly scheduled UEs or jointly scheduled layers. Then, the second device can determine a DMRS mask m specific to the first device 110. v Based on factors specific to the first device 110 and / or all the example factors discussed above, the second device 120 may determine whether the first device 110 requires a variable power boost and send configuration information to the first device 110.

[0104] In the following text, both the first device 110 and the second device 120 may apply at least one amplitude scaling parameter to (430) DMRS transmission or DMRS reception.

[0105] For better discussion, the DMRS transmitted from the first device 110 to the second device 120 is referred to as the first DMRS. As an example, the first DMRS may be a DMRS carried in a PUSCH. Furthermore, the DMRS transmitted from the second device 120 to the first device 110 is referred to as the second DMRS. As an example, the second DMRS may be a DMRS carried in a PDSCH.

[0106] First, an example regarding the first DMRS will be discussed. As shown in Figure 4, the first device 110 can determine (440) the first DMRS based on a DMRS mask and at least one power boosting parameter, and send (445-1) the first DMRS to the second device 120. For the second device 120, the second device 120 receives (445-2) the first DMRS determined by the first device 110 at least in part based on the DMRS mask and at least one amplitude scaling parameter, and evaluates (450) the channel state based on the first DMRS sequence. As an example, the gNB receives a PUSCH with a DMRS sequence from the UE, which is generated by the UE based on a DMRS mask allocated by the gNB and a power boosting vector calculated and applied by the UE. This DMRS is used by the gNB for channel estimation. The gNB already knows the supersequence and DMRS mask for the UE to generate the DMRS for channel estimation locally.

[0107] An example of the first DMRS will be discussed. The second device 120 determines (460) the second DMRS based at least in part on at least one power boosting parameter and transmits (465-1) the second DMRS to the first device 110. For the first device 110, the first device 110 receives (465-2) the second DMRS from the second device 120. The first device 110 may determine (470) the DMRS sequence based on the second DMRS, the DMRS mask, and at least one amplitude scaling parameter; the channel state may then be evaluated (475) based on the DMRS sequence. As an example, the gNB transmits a PDSCH with DMRS boosted by a power boosting vector. The UE removes the power boost and uses the DMRS for channel estimation.

[0108] Furthermore, in this scenario (DL), the UE can generate DMRS locally, such as based on a supersequence and DMRS mask transmitted by the gNB. Specifically, the UE can apply the mask to the supersequence to generate DMRS. When the UE receives a PDSCH with DMRS (generated based on the UE-specific mask and power boost), the UE can remove the power boost from the received DMRS RE.

[0109] In the following sections, examples of configuration information will be discussed. These examples are shown for illustrative purposes only. For instance, in other example embodiments, more or fewer parameters may be included, and the names of the (new) fields may be different. In some example embodiments, power control of individual DMRS symbols or REs may be controlled via new fields in the new IE or DCI format in RRCReconfiguration, as shown below.

[0110] The box below shows an example IE in RRC signaling used to indicate whether the UE needs variable power boost.

[0111]

[0112] In the examples above, if "Variable-Power-boosting" is set to "true", it means the UE needs variable power boost; if "Variable-Power-boosting" is set to "false", it means the UE does not need variable power boost. It should be noted that similar configurations (Variable-Power-boosting) can also be applied to downlink messages. PDSCH-Config -> dmrs-DownlinkConfig .

[0113] Alternatively or additionally, whether a variable power boost is required is also configured via a new DCI field (e.g., a new DCI field "Variable-Power-boosting" with a length of 1 bit). If the new DCI field "Variable-Power-boosting" is set to "1 / True", it means that the UE requires a variable power boost, while if the new DCI field "Variable-Power-boosting" is set to "0 / False", it means that the UE does not require a variable power boost.

[0114] An example IE used in RRC signaling to indicate at least one amplitude scaling parameter to the UE is shown below.

[0115]

[0116] In the example above, "dmrsPower" is used to indicate at least one amplitude scaling parameter to the UE using "power1(pos1), ..., power N(posN)". It should be noted that the same configuration (dmrsPower) can also be applied to downlink messages. PDSCH-Config -> dmrs-DonwlinkConfig .

[0117] Alternatively or alternatively, at least one amplitude scaling parameter can be configured via a new DCI field (e.g., a new DCI field “Power Allocation per RE”), where the new DCI field Power Allocation per RE = {power1(pos1), ..., power N(posN)}, where posk indexes a pair (k, l), where k is the subcarrier number and l is the OFDM symbol number.

[0118] Figure 5 A flowchart of an example method 500 implemented at a first device according to some example embodiments of the present disclosure is shown. For the purposes of discussion, [the following will be discussed]. Figure 1 Method 500 is described by the angle of the first device 110 in the middle.

[0119] In block 510, the first device receives configuration information from the second device, which includes an indication of whether a variable power boost is required.

[0120] In block 520, based on determining the indication to apply a variable power boost, the first device determines at least one amplitude scaling parameter based on a first device-specific demodulation reference signal (DMRS) mask.

[0121] In block 530, the first device applies the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0122] In some example embodiments, each of the at least one amplitude scaling parameter may be determined by sign.

[0123] In some example embodiments, at least one amplitude scaling parameter may include a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol, the number of muted REs associated with the DMRS symbol, or the number of DMRS REs associated with the DMRS symbol.

[0124] In some example embodiments, at least one amplitude scaling parameter may also include a second amplitude scaling parameter corresponding to another symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0125] In some example embodiments, at least one amplitude scaling parameter may be determined specifically for the first antenna port.

[0126] In some example embodiments, at least one amplitude scaling parameter may include a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter may be determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol and the first antenna port, the number of silent REs associated with the DMRS symbol and the first antenna port, or the number of DMRS REs associated with the DMRS symbol and the first antenna port.

[0127] In some example embodiments, at least one additional amplitude scaling parameter may correspond to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0128] In some example embodiments, the configuration information may also include at least one of the following: a DMRS sequence that is shared by the first device and at least one other first device, or a DMRS mask specific to the first device.

[0129] In some example embodiments, the first device may determine the first DMRS based on the DMRS mask and at least one power boosting parameter; and send the first DMRS to the second device.

[0130] In some example embodiments, the first device may receive a second DMRS from the second device; determine a DMRS sequence based on the second DMRS, a DMRS mask, and at least one amplitude scaling parameter; and evaluate the channel state based on the DMRS sequence.

[0131] In some example embodiments, the first device may send capability-related information to the second device, the capability-related information indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0132] In some example embodiments, configuration information may include at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0133] In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0134] Figure 6 A flowchart of an example method 600 implemented at a second device according to some example embodiments of the present disclosure is shown. For the purposes of discussion, [the following will be discussed]. Figure 1 Method 600 is described by the angle of the second device 120 in the middle.

[0135] In box 610, the second device sends configuration information to the first device, which includes an indication of whether a variable power boost for the first device is required.

[0136] In box 620, based on the determination of the indication to apply a variable power boost, the second device determines at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device.

[0137] In box 630, the second device applies the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0138] In some example embodiments, each of the at least one amplitude scaling parameter may be determined by sign.

[0139] In some example embodiments, at least one amplitude scaling parameter may include a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) at the DMRS symbol, the number of silent REs at the DMRS symbol, or the number of DMRS REs at the DMRS symbol.

[0140] In some example embodiments, at least one amplitude scaling parameter may also include a second amplitude scaling parameter corresponding to another symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0141] In some example embodiments, at least one amplitude scaling parameter may be determined specifically for the first antenna port.

[0142] In some example embodiments, at least one amplitude scaling parameter may include a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol and the first antenna port, the number of silent REs associated with the DMRS symbol and the first antenna port, or the number of DMRS REs associated with the DMRS symbol and the first antenna port.

[0143] In some example embodiments, at least one additional amplitude scaling parameter may correspond to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0144] In some example embodiments, the configuration information also includes at least one of the following: a DMRS sequence that is shared by the first device and at least one other first device, or a DMRS mask specific to the first device.

[0145] In some example embodiments, the second device may determine whether the first device requires variable power boost based on at least one of the following: a first device-specific DMRS mask, DMRS density per symbol, DMRS density of each line port, the number of first devices scheduled using the same transmission resources, or the number of layers configured for transmission between the first and second devices.

[0146] In some example embodiments, the second device may receive a first DMRS from the first device, wherein the first DMRS is determined by the first device at least in part based on a DMRS mask and at least one amplitude scaling parameter; and the channel state is evaluated based on the first DMRS sequence.

[0147] In some example embodiments, the second device may determine the second DMRS based at least in part on at least one power boost parameter; and send the second DMRS to the first device.

[0148] In some example embodiments, the second device may receive capability-related information from the first device indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0149] In some example embodiments, the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0150] In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0151] Figure 7 A flowchart of an example method 700 implemented at a first device according to some example embodiments of the present disclosure is shown. For the purposes of discussion, [the following will be discussed]. Figure 1 Method 700 is described by the angle of the first device 110 in the middle.

[0152] In block 710, the first device receives configuration information from the second device, the configuration information including at least one amplitude scaling parameter and a demodulation reference signal (DMRS) mask specific to the first device.

[0153] At box 720, the first device applies at least one amplitude scaling parameter and a DMRS mask to either DMRS transmission or DMRS reception.

[0154] In some example embodiments, at least one amplitude scaling parameter may be determined by a second device based on an artificial intelligence (AI) / machine learning (ML) model.

[0155] In some example embodiments, at least one amplitude scaling parameter may be determined specifically for the first antenna port.

[0156] In some example embodiments, at least one additional amplitude scaling parameter may correspond to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0157] In some example embodiments, the configuration information also includes a DMRS sequence that is shared by the first device and at least one other first device.

[0158] In some example embodiments, the first device may determine the first DMRS based on the DMRS mask and at least one power boosting parameter; and send the first DMRS to the second device.

[0159] In some example embodiments, the first device may receive a second DMRS from the second device; determine a DMRS sequence based on the second DMRS, a DMRS mask, and at least one amplitude scaling parameter; and evaluate the channel state based on the DMRS sequence.

[0160] In some example embodiments, the first device may send capability-related information to the second device, the capability-related information indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0161] In some example embodiments, the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0162] In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0163] Figure 8 A flowchart of an example method 800 implemented at a second device according to some example embodiments of the present disclosure is shown. For the purposes of discussion, [the following will be discussed]. Figure 1 Method 800 is described by the angle of the second device 120 in the middle.

[0164] In block 810, the second device sends configuration information to the first device, the configuration information including at least one amplitude scaling parameter and a demodulation reference signal (DMRS) mask specific to the first device.

[0165] At box 820, the second device applies at least one amplitude scaling parameter and a DMRS mask to either DMRS transmission or DMRS reception.

[0166] In some example embodiments, at least one amplitude scaling parameter may be determined by a second device based on an artificial intelligence (AI) / machine learning (ML) model.

[0167] In some example embodiments, at least one amplitude scaling parameter is specifically determined for the first antenna port.

[0168] In some example embodiments, at least one additional amplitude scaling parameter corresponds to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0169] In some example embodiments, the configuration information also includes a DMRS sequence that is shared by the first device and at least one other first device.

[0170] In some example embodiments, the second device may determine whether to apply power adjustment based on at least one of the following: a DMRS mask specific to the first device, the DMRS density per symbol, the DMRS density of each line port, the number of first devices scheduled with the same transmission resources, or the number of layers configured for transmission between the first and second devices.

[0171] In some example embodiments, the second device may receive a first DMRS from the first device, wherein the first DMRS is determined by the first device at least in part based on a DMRS mask and at least one amplitude scaling parameter; and the channel state is evaluated based on the first DMRS sequence.

[0172] In some example embodiments, the second device may determine the second DMRS based at least in part on at least one power boost parameter; and send the second DMRS to the first device.

[0173] In some example embodiments, the second device may receive capability-related information from the first device, indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0174] In some example embodiments, the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0175] In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0176] In some example embodiments, a first device capable of performing any method 500 (e.g., Figure 1 The first device 110 may include a component for performing the corresponding operation of method 500. This component may be implemented in any suitable form. For example, the component may be implemented in a circuit or software module. The first device may be implemented as or included in... Figure 1 In the first device 110.

[0177] In some example embodiments, the first device includes: components for receiving configuration information from the second device, the configuration information including an indication of whether a variable power boost is required; components for instructing the application of the variable power boost based on a determination indication, and for determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device; and components for applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0178] In some example embodiments, each of the at least one amplitude scaling parameter is determined by sign.

[0179] In some example embodiments, at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol, the number of silent REs associated with the DMRS symbol, or the number of DMRS REs associated with the DMRS symbol.

[0180] In some example embodiments, at least one amplitude scaling parameter further includes a second amplitude scaling parameter corresponding to an additional symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0181] In some example embodiments, at least one amplitude scaling parameter is specifically determined for the first antenna port.

[0182] In some example embodiments, at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol and the first antenna port, the number of muted REs associated with the DMRS symbol and the first antenna port, or the number of DMRS REs associated with the DMRS symbol and the first antenna port.

[0183] In some example embodiments, at least one additional amplitude scaling parameter corresponds to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0184] In some example embodiments, the configuration information also includes at least one of the following: a DMRS sequence that is shared by the first device and at least one other first device, or a DMRS mask specific to the first device.

[0185] In some example embodiments, the first device further includes: components for determining a first DMRS based on a DMRS mask and at least one power boosting parameter; and components for transmitting the first DMRS to a second device.

[0186] In some example embodiments, the first device further includes: components for receiving a second DMRS from the second device; components for determining a DMRS sequence based on the second DMRS, a DMRS mask, and at least one amplitude scaling parameter; and components for evaluating the channel state based on the DMRS sequence.

[0187] In some example embodiments, the first device further includes a component for sending capability-related information to the second device, the capability-related information indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0188] In some example embodiments, the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI). In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0189] In some example embodiments, a second device capable of performing any method 600 (e.g., Figure 1 The second device 120 may include a component for performing the corresponding operation of method 600. This component may be implemented in any suitable form. For example, the component may be implemented in a circuit or software module. The second device may be implemented as or included in... Figure 1The second device 120 in the middle.

[0190] In some example embodiments, the second device includes: components for sending configuration information to the first device, the configuration information including an indication of whether a variable power boost is needed for the first device; components for instructing the application of the variable power boost based on a determination indication, and for determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device; and components for applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0191] In some example embodiments, each of the at least one amplitude scaling parameter is determined by sign.

[0192] In some example embodiments, at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) at the DMRS symbol, the number of silent REs at the DMRS symbol, or the number of DMRS REs at the DMRS symbol.

[0193] In some example embodiments, at least one amplitude scaling parameter further includes a second amplitude scaling parameter corresponding to another symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0194] In some example embodiments, at least one amplitude scaling parameter is specifically determined for the first antenna port.

[0195] In some example embodiments, at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol and the first antenna port, the number of muted REs associated with the DMRS symbol and the first antenna port, or the number of DMRS REs associated with the DMRS symbol and the first antenna port.

[0196] In some example embodiments, at least one additional amplitude scaling parameter corresponds to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0197] In some example embodiments, the configuration information also includes at least one of the following: a DMRS sequence that is shared by the first device and at least one other first device, or a DMRS mask specific to the first device.

[0198] In some example embodiments, the second device further includes a component for determining whether a variable power boost to the first device is needed based on at least one of the following: a DMRS mask specific to the first device, a DMRS density per symbol, a DMRS density per daily line port, the number of first devices scheduled with the same transmission resources, or the number of layers configured for transmission between the first and second devices.

[0199] In some example embodiments, the second apparatus further includes: a component for receiving a first DMRS from the first apparatus, wherein the first DMRS is determined by the first apparatus at least in part based on a DMRS mask and at least one amplitude scaling parameter; and a component for evaluating the channel state based on the first DMRS sequence.

[0200] In some example embodiments, the second device further includes: components for determining a second DMRS based at least in part on at least one power boost parameter; and components for transmitting the second DMRS to the first device.

[0201] In some example embodiments, the second device further includes a component for receiving capability-related information from the first device, the capability-related information indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0202] In some example embodiments, the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI). In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0203] In some example embodiments, a first device capable of performing any method 700 (e.g., Figure 1 The first device 110 may include a component for performing the corresponding operation of method 700. This component may be implemented in any suitable form. For example, the component may be implemented in a circuit or software module. The first device may be implemented as or included in... Figure 1 In the first device 110.

[0204] In some example embodiments, the first device includes: a component for receiving configuration information from the second device, the configuration information including: at least one amplitude scaling parameter and a demodulation reference signal (DMRS) mask specific to the first device; and a component for applying the at least one amplitude scaling parameter and the DMRS mask to DMRS transmission or DMRS reception.

[0205] In some example embodiments, at least one amplitude scaling parameter is determined by a second device based on an artificial intelligence (AI) / machine learning (ML) model.

[0206] In some example embodiments, at least one amplitude scaling parameter is specifically determined for the first antenna port.

[0207] In some example embodiments, at least one additional amplitude scaling parameter corresponds to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0208] In some example embodiments, the configuration information also includes a DMRS sequence that is shared by the first device and at least one other first device.

[0209] In some example embodiments, the first device further includes: components for determining a first DMRS based on a DMRS mask and at least one power boosting parameter; and components for transmitting the first DMRS to a second device.

[0210] In some example embodiments, the first device further includes: components for receiving a second DMRS from the second device; components for determining a DMRS sequence based on the second DMRS, a DMRS mask, and at least one amplitude scaling parameter; and components for evaluating the channel state based on the DMRS sequence.

[0211] In some example embodiments, the first device further includes a component for sending capability-related information to the second device, the capability-related information indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0212] In some example embodiments, the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0213] In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0214] In some example embodiments, a second device capable of performing any method 800 (e.g., Figure 1 The second device 120 may include a component for performing the corresponding operation of method 800. This component may be implemented in any suitable form. For example, the component may be implemented in a circuit or software module. The second device may be implemented as or included in... Figure 1 The second device 120 in the middle.

[0215] In some example embodiments, the second device includes: a component for sending configuration information to the first device, the configuration information including: at least one amplitude scaling parameter and a demodulation reference signal (DMRS) mask specific to the first device; and a component for applying the at least one amplitude scaling parameter and the DMRS mask to DMRS transmission or DMRS reception.

[0216] In some example embodiments, at least one amplitude scaling parameter is determined by a second device based on an artificial intelligence (AI) / machine learning (ML) model.

[0217] In some example embodiments, at least one amplitude scaling parameter is specifically determined for the first antenna port.

[0218] In some example embodiments, at least one additional amplitude scaling parameter corresponds to the second antenna port, and at least one additional amplitude scaling parameter is different from at least one amplitude scaling parameter.

[0219] In some example embodiments, the configuration information also includes a DMRS sequence that is shared by the first device and at least one other first device.

[0220] In some example embodiments, the second device further includes a component for determining whether to apply power adjustment based on at least one of the following: a DMRS mask specific to the first device, the DMRS density per symbol, the DMRS density of each antenna port, the number of first devices scheduled with the same transmission resources, or the number of layers configured for transmission between the first and second devices.

[0221] In some example embodiments, the second apparatus further includes: a component for receiving a first DMRS from the first apparatus, wherein the first DMRS is determined by the first apparatus at least in part based on a DMRS mask and at least one amplitude scaling parameter; and a component for evaluating the channel state based on the first DMRS sequence.

[0222] In some example embodiments, the second device further includes: components for determining a second DMRS based at least in part on at least one power boost parameter; and components for transmitting the second DMRS to the first device.

[0223] In some example embodiments, the second device further includes a component for receiving capability-related information from the first device, the capability-related information indicating at least one of the following: whether the first device supports variable power boost, or the granularity of performing variable power boost supported by the first device.

[0224] In some example embodiments, the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0225] In some example embodiments, the first device includes a terminal device, and the second device includes a network device.

[0226] Figure 9 This is a simplified block diagram of a device 900 suitable for implementing an example embodiment of the present disclosure. The device 900 can be provided to implement a communication device, for example, such as... Figure 1 The first device 110 or the second device 120 shown. As shown, the device 900 includes one or more processors 910, one or more memories 920 coupled to the processors 910, and one or more communication modules 940 coupled to the processors 910.

[0227] Communication module 940 is used for bidirectional communication. Communication module 940 has one or more communication interfaces to facilitate communication with one or more other modules or devices. The communication interface can represent any interface required for communication with other network elements. In some example embodiments, communication module 940 may include at least one antenna.

[0228] As a non-limiting example, processor 910 can be any type suitable for a local technology network and can include one or more of the following: general-purpose computer, special-purpose computer, microprocessor, digital signal processor (DSP), and processor based on a multi-core processor architecture. Device 900 can have multiple processors, such as application-specific integrated circuit chips that are time-dependent on a clock synchronized with the main processor.

[0229] Memory 920 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memories include, but are not limited to, read-only memory (ROM) 924, electrically programmable read-only memory (EPROM), flash memory, hard disk, optical disc (CD), digital video disc (DVD), optical disc, laser disc, and other magnetic and / or optical storage. Examples of volatile memories include, but are not limited to, random access memory (RAM) 922 and other volatile memories that will not persist for extended periods of power-off duration.

[0230] Computer program 930 includes computer-executable instructions that are executed by an associated processor 910. The instructions of program 930 may include instructions for performing operations / actions of some example embodiments of this disclosure. Program 930 may be stored in memory (e.g., ROM 924). Processor 910 can perform any suitable actions and processes by loading program 930 into RAM 922.

[0231] The exemplary embodiments of this disclosure can be implemented by program 930, enabling device 900 to perform as described in the reference. Figures 3 to 8 Any process discussed in this disclosure. Exemplary embodiments of this disclosure may also be implemented by hardware or by a combination of software and hardware.

[0232] In some example embodiments, program 930 may be tangibly contained in a computer-readable medium, which may be included in device 900 (such as memory 920) or other storage device accessible by device 900. Device 900 may load program 930 from the computer-readable medium into RAM 922 for execution. In some example embodiments, the computer-readable medium may include any type of non-transitory storage medium, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc. As used herein, the term "non-transitory" is a limitation on the medium itself (i.e., tangible, not tactile), rather than a limitation on the persistence of data storage (e.g., RAM and ROM).

[0233] Figure 10 An example of a computer-readable medium 1000 is shown, which may be in the form of a CD, DVD, or other optical storage disc. Program 930 is stored on the computer-readable medium 1000.

[0234] Generally, the various embodiments of this disclosure can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device. Although various aspects of the embodiments of this disclosure are illustrated and described as block diagrams, flowcharts, or using some other graphical representation, it should be understood that, as non-limiting examples, the blocks, apparatuses, systems, techniques, or methods described herein can be implemented in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof.

[0235] Some exemplary embodiments of this disclosure also provide at least one computer program product tangibly stored on a computer-readable medium, such as a non-transitory computer-readable medium. The computer program product includes computer-executable instructions that execute in a device on a target physical or virtual processor, such as those included in a program module, to perform any of the methods described above. Typically, a program module includes routines, programs, libraries, objects, classes, components, data structures, etc., that perform a particular task or implement a particular abstract data type. In various embodiments, the functionality of a program module can be combined or split among program modules as needed. The machine-executable instructions for a program module can execute within a local or distributed device. In a distributed device, the program module can reside in both local and remote storage media.

[0236] Program code used to perform the methods of this disclosure may be written in any combination of one or more programming languages. The program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a stand-alone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0237] In the context of this disclosure, computer program code or related data may be carried by any suitable carrier to enable a device, apparatus, or processor to perform the various processes and operations described above. Examples of carriers include signals, computer-readable media, etc.

[0238] Computer-readable media can be computer-readable signal media or computer-readable storage media. Computer-readable media can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any suitable combination thereof. More specific examples of computer-readable storage media will include electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable optical disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0239] Furthermore, although operations are described in a specific order, this should not be construed as requiring that such operations be performed in the specific order shown or sequentially, or that all shown operations be performed to achieve the desired result. In some cases, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the discussion above, these details should not be construed as limiting the scope of this disclosure, but rather as descriptions of features that may be specific to particular embodiments. Unless expressly stated otherwise, certain features described in the context of a single embodiment may also be implemented in combination in a single embodiment. Conversely, unless expressly stated otherwise, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0240] Although this disclosure has been described in language specific to structural features and / or methodological actions, it should be understood that the disclosure as defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are disclosed as exemplary forms for implementing the claims.

[0241] Example 1. A first device for communication, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first device to: receive configuration information from a second device, the configuration information including an indication of whether a variable power boost is required; instruct the application of a variable power boost based on determining the indication; determine at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device; and apply the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0242] Example 2. The first apparatus according to Example 1, wherein each of the at least one amplitude scaling parameters is determined by sign.

[0243] Example 3. The first apparatus according to Example 1, wherein the at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol, the number of muted REs associated with the DMRS symbol, or the number of DMRS REs associated with the DMRS symbol.

[0244] Example 4. The first apparatus according to Example 3, wherein the at least one amplitude scaling parameter further includes a second amplitude scaling parameter corresponding to another symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0245] Example 5. The first apparatus according to Example 1, wherein the at least one amplitude scaling parameter is specifically determined for the first antenna port.

[0246] Example 6. The first apparatus according to Example 5, wherein the at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol and the first antenna port, the number of muted REs associated with the DMRS symbol and the first antenna port, or the number of DMRS REs associated with the DMRS symbol and the first antenna port.

[0247] Example 7. The first apparatus according to Example 5, wherein at least one additional amplitude scaling parameter corresponds to the second antenna port, and the at least one additional amplitude scaling parameter is different from the at least one amplitude scaling parameter.

[0248] Example 8. A first device according to any one of Examples 1 to 7, wherein the configuration information further includes at least one of the following: a DMRS sequence, the DMRS sequence being shared by the first device and at least one other first device, or a DMRS mask specific to the first device.

[0249] Example 9. A first apparatus according to any one of Examples 1 to 8, wherein the first apparatus is further configured to: determine a first DMRS based on the DMRS mask and at least one power boosting parameter; and transmit the first DMRS to the second apparatus.

[0250] Example 10. A first apparatus according to any one of Examples 1 to 8, wherein the first apparatus is further configured to: receive a second DMRS from the second apparatus; determine a DMRS sequence based on the second DMRS, the DMRS mask and the at least one amplitude scaling parameter; and evaluate the channel state based on the DMRS sequence.

[0251] Example 11. A first device according to any one of Examples 1 to 10, wherein the first device is further configured to: send capability-related information to the second device, the capability-related information indicating at least one of the following: whether the first device supports the variable power boost, or the granularity of performing the variable power boost supported by the first device.

[0252] Example 12. A method comprising: receiving configuration information from a second device, the configuration information including an indication of whether a variable power boost is required; instructing the application of a variable power boost based on determining the indication; determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device; and applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0253] Example 13. A first apparatus comprising: components for receiving configuration information from a second apparatus, the configuration information including an indication of whether a variable power boost is required; components for determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first apparatus, based on determining the indication to instruct the application of a variable power boost; and components for applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0254] Example 14. A second device, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the second device to: send configuration information to a first device, the configuration information including an indication of whether a variable power boost is required for the first device; instruct the application of a variable power boost based on determining the indication; determine at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device; and apply the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0255] Example 15. The second apparatus according to Example 14, wherein each of the at least one amplitude scaling parameters is determined by sign.

[0256] Example 16. The second apparatus according to Example 14, wherein the at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) at the DMRS symbol, the number of muted REs at the DMRS symbol, or the number of DMRS REs at the DMRS symbol.

[0257] Example 17. The second apparatus according to Example 16, wherein the at least one amplitude scaling parameter further includes a second amplitude scaling parameter corresponding to another symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

[0258] Example 18. The second apparatus according to Example 14, wherein the at least one amplitude scaling parameter is specifically determined for the first antenna port.

[0259] Example 19. The second apparatus according to Example 18, wherein the at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: the total number of resource elements (REs) associated with the DMRS symbol and the first antenna port, the number of muted REs associated with the DMRS symbol and the first antenna port, or the number of DMRS REs associated with the DMRS symbol and the first antenna port.

[0260] Example 20. The second apparatus according to Example 18, wherein at least one additional amplitude scaling parameter corresponds to the second antenna port, and the at least one additional amplitude scaling parameter is different from the at least one amplitude scaling parameter.

[0261] Example 21. A second device according to any one of Examples 14 to 20, wherein the configuration information further includes at least one of the following: a DMRS sequence, the DMRS sequence being shared by the first device and at least one other first device, or the DMRS mask being specific to the first device.

[0262] Example 22. A second apparatus according to any one of Examples 14 to 21, wherein the second apparatus is configured to determine whether a variable power boost to the first apparatus is required based on at least one of the following: the DMRS mask specific to the first apparatus, the DMRS density per symbol, the DMRS density of each line port, the number of first apparatuses scheduled using the same transmission resources, or the number of layers configured for transmission between the first apparatus and the second apparatus.

[0263] Example 23. A second apparatus according to any one of Examples 14 to 23, wherein the second apparatus is further configured to: receive a first DMRS from the first apparatus, wherein the first DMRS is determined by the first apparatus at least in part based on the DMRS mask and the at least one amplitude scaling parameter; and evaluate the channel state based on the first DMRS sequence.

[0264] Example 24. A second apparatus according to any one of Examples 14 to 23, wherein the second apparatus is further configured to: determine a second DMRS at least in part based on the at least one power boost parameter; and send the second DMRS to the first apparatus.

[0265] Example 25. A second apparatus according to any one of Examples 14 to 24, wherein the second apparatus is further configured to: receive capability-related information from the first apparatus indicating at least one of the following: whether the first apparatus supports the variable power boost, or the granularity of the variable power boost supported by the first apparatus.

[0266] Example 26. A second apparatus according to any one of Examples 14 to 25, wherein the configuration information is included in at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0267] Example 27. A second device according to any one of Examples 14 to 26, wherein the first device includes a terminal device and the second device includes a network device.

[0268] Example 28. A method comprising: sending configuration information to a first device, the configuration information including an indication of whether a variable power boost is required for the first device; instructing the application of a variable power boost based on determining the indication; determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first device; and applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0269] Example 29. A second apparatus comprising: components for transmitting configuration information to a first apparatus, the configuration information including an indication of whether a variable power boost is required for the first apparatus; components for determining at least one amplitude scaling parameter based on a demodulation reference signal (DMRS) mask specific to the first apparatus, based on determining the indication to instruct the application of a variable power boost; and components for applying the at least one amplitude scaling parameter to DMRS transmission or DMRS reception.

[0270] Example 30. A computer-readable medium including instructions stored thereon for causing a device to perform at least the method described in Example 12 or the method described in Example 28.

Claims

1. A first device for communication, comprising: At least one processor; as well as At least one memory storing instructions that, when executed by the at least one processor, cause the first device to: Receive configuration information from the second device, the configuration information including an indication of whether a variable power boost is required; Based on the determination of the indication, a variable power boost is applied, and at least one amplitude scaling parameter is determined based on the demodulation reference signal DMRS mask specific to the first device; as well as The at least one amplitude scaling parameter is applied to DMRS transmission or DMRS reception.

2. The first apparatus according to claim 1, wherein each of the at least one amplitude scaling parameters is determined by sign.

3. The first apparatus of claim 1, wherein the at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: The total number of resource elements (REs) associated with the DMRS symbol. The number of silenced REs associated with the DMRS symbol, or The number of DMRS REs associated with the DMRS symbol.

4. The first apparatus according to claim 3, wherein the at least one amplitude scaling parameter further includes a second amplitude scaling parameter corresponding to another symbol, wherein the second amplitude scaling parameter is different from the first amplitude scaling parameter.

5. The first apparatus of claim 1, wherein the at least one amplitude scaling parameter is specifically determined for the first antenna port.

6. The first apparatus of claim 5, wherein the at least one amplitude scaling parameter includes a first amplitude scaling parameter corresponding to a DMRS symbol, and the first amplitude scaling parameter is determined based on at least one of the following: The total number of resource elements (REs) associated with the DMRS symbol and the first antenna port. The number of muted REs associated with the DMRS symbol and the first antenna port, or The number of DMRS REs associated with the DMRS symbol and the first antenna port.

7. The first apparatus of claim 5, wherein at least one additional amplitude scaling parameter corresponds to the second antenna port, and the at least one additional amplitude scaling parameter is different from the at least one amplitude scaling parameter.

8. The first apparatus according to claim 1, wherein the configuration information further includes at least one of the following: A DMRS sequence, wherein the DMRS sequence is shared by the first device and at least one other first device, or The DMRS mask specific to the first device.

9. The first device according to any one of claims 1 to 8, wherein the first device is further configured to: The first DMRS is determined based on the DMRS mask and at least one power boost parameter; and The first DMRS is sent to the second device.

10. The first device according to any one of claims 1 to 8, wherein the first device is further configured to: Receive the second DMRS from the second device; The DMRS sequence is determined based on the second DMRS, the DMRS mask, and the at least one amplitude scaling parameter; and The channel state is evaluated based on the DMRS sequence.

Images