Power reduction for communication systems

Abstract

The embodiment of the invention relates to equipment, a method, a device and a non-transitory computer readable medium for power reduction. In one aspect, a terminal device may receive, from a network device, at least one channel state information (CSI) reporting standard related to a transmit power reduction at the network device. The terminal device may determine information associated with a power offset for transmit power reduction at the network device based on the at least one CSI reporting standard. The terminal device may send a CSI report including information associated with the power offset to the network device. Embodiments of the present disclosure can achieve network energy saving and cost saving, and minimize CSI reporting overhead and associated cost.

Description

Technical Field

[0001] Various exemplary embodiments relate to the field of communications, and more particularly to devices, methods, apparatuses, and computer-readable storage media for power reduction. Background Technology

[0002] With the development of communication technologies, a major share of the operating costs (OPEX) for mobile network operators comes from the cost incurred for the energy required to operate the radio access network (RAN). The RAN consumes the majority of the total energy consumption in the network. Reducing transmit power is expected to provide an effective method for reducing energy consumption at network equipment. Summary of the Invention

[0003] Typically, the exemplary embodiments of this disclosure provide a solution for power reduction in a communication system.

[0004] In a first aspect, a terminal device is provided. The terminal device includes 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 at least: receive from a network device at least one channel state information (CSI) reporting standard related to a reduction in transmit power at the network device; determine, based on the at least one CSI reporting standard, information associated with a power offset for the reduction in transmit power at the network device; and send a CSI report to the network device including the information associated with the power offset.

[0005] In a second aspect, a network device is provided. The network device includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the network device to at least: determine for a terminal device at least one channel state information (CSI) reporting standard related to a reduction in transmit power at the network device; send the at least one CSI reporting standard to the terminal device; and receive a CSI report from the terminal device, the CSI report including information associated with a power offset for the reduction in transmit power at the network device.

[0006] In a third aspect, a method is provided. The method includes: receiving at a terminal device at a network device at at least one Channel State Information (CSI) report standard related to a reduction in transmit power at the network device; determining, based on the at least one CSI report standard, information associated with a power offset for the reduction in transmit power at the network device; and sending a CSI report to the network device including the information associated with the power offset.

[0007] In a fourth aspect, a method is provided. The method includes: determining at a network device at a terminal device at at least one Channel State Information (CSI) reporting standard related to a reduction in transmit power at the network device; sending the at least one CSI reporting standard to the terminal device; and receiving a CSI report from the terminal device, the CSI report including information associated with a power offset for the reduction in transmit power at the network device.

[0008] In a fifth aspect, an apparatus is provided. The apparatus includes: components for receiving at a terminal device at a network device at at least one Channel State Information (CSI) report standard related to a reduction in transmit power at the network device; components for determining, based on the at least one CSI report standard, information associated with a power offset for the reduction in transmit power at the network device; and components for transmitting to the network device a CSI report including the information associated with the power offset.

[0009] In a sixth aspect, an apparatus is provided. The apparatus includes: components for determining at least one Channel State Information (CSI) report standard related to a reduction in transmit power at a network device for a terminal device; components for transmitting the at least one CSI report standard to the terminal device; and components for receiving a CSI report from the terminal device, the CSI report including information associated with a power offset related to the reduction in transmit power at the network device.

[0010] In a seventh aspect, a non-transitory computer-readable medium is provided, including program instructions for causing a device to perform at least the methods of the third or fourth aspect.

[0011] In an eighth aspect, a computer program is provided, including instructions that, when executed by a device, cause the device to perform at least the methods of the third or fourth aspect.

[0012] In a ninth aspect, a terminal device is provided. The terminal device includes: a receiving circuit system configured to receive from a network device at least one Channel State Information (CSI) report standard related to a reduction in transmit power at the network device; a determining circuit system configured to determine information associated with a power offset for a reduction in transmit power at the network device based on at least one CSI report standard; and a transmitting circuit system configured to transmit a CSI report including the information associated with the power offset to the network device.

[0013] In a tenth aspect, a network device is provided. The network device includes: a determining circuitry configured to determine at least one Channel State Information (CSI) report standard related to a reduction in transmit power at the network device for a terminal device; a transmitting circuitry configured to transmit the at least one CSI report standard to the terminal device; and a receiving circuitry configured to receive a CSI report from the terminal device, the CSI report including information associated with a power offset for the reduction in transmit power at the network device.

[0014] It should be understood that the summary portion of this disclosure is not intended to identify key or essential features of the embodiments thereof, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become apparent from the following description. Attached Figure Description

[0015] Some exemplary embodiments will now be described with reference to the accompanying drawings, in which:

[0016] Figure 1 The illustrations show examples of network environments in which some of the exemplary embodiments of this disclosure can be implemented;

[0017] Figure 2 The illustration shows an example signaling process for performing power reduction for a communication system according to some embodiments of the present disclosure;

[0018] Figure 3 The illustration shows an example flowchart of a process for determining information associated with power offset according to some embodiments of the present disclosure;

[0019] Figure 4 The diagram illustrates the relationship between CQI and SINR.

[0020] Figure 5 The illustration shows another example signaling process for performing power reduction for a communication system according to some embodiments of the present disclosure;

[0021] Figure 6 The diagram illustrates an example flowchart of the process for reducing transmission power.

[0022] Figure 7 The illustration shows a flowchart of a method implemented at a terminal device according to some example embodiments of the present disclosure;

[0023] Figure 8 The illustration shows a flowchart of a method implemented at a network device according to some example embodiments of the present disclosure;

[0024] Figure 9 The illustration shows a simplified block diagram of a device suitable for implementing some example embodiments of the present disclosure; and

[0025] Figure 10 A block diagram illustrating an example of a computer-readable medium according to some exemplary embodiments of the present disclosure is shown.

[0026] In all the accompanying drawings, the same or similar reference numerals denote the same or similar elements. Detailed Implementation

[0027] 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 assist those skilled in the art in understanding and implementing this disclosure, and do not imply any limitation on the scope of this disclosure. This disclosure described herein can be implemented in various ways other than those described below.

[0028] 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.

[0029] 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 necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Additionally, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is believed that, whether explicitly described or not, its influence on such feature, structure, or characteristic in conjunction with other embodiments is within the knowledge of those skilled in the art.

[0030] It should be understood that although the terms “first” and “second”, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. 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.

[0031] 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 also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that, when used herein, the terms “comprising,” “including,” “having,” “having,” “containing,” and / or “comprising” specify the presence of the stated feature, element, and / or component, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. 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 these elements, or at least any two or more of these elements, or at least all of the elements.

[0032] As used in this application, the term "circuit system" may refer to one or more or all of the following: (a) Hardware circuit implementation only (such as implementation in analog and / or digital circuit systems only) and (b) A combination of hardware circuitry and software, such as (if applicable): (i) A combination of (multiple) analog and / or digital hardware circuits and software / firmware, and (ii) Any part of the (multiple) hardware processors having software (including (multiple) digital signal processors), software, and (multiple) memories, 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 portions of (multiple) microprocessors) that require software (e.g., firmware) to operate, but the software may be absent when operation does not require it.

[0033] This definition of "circuit system" applies to all uses of the term in this application, including in any claim. As another example, as used herein, the term "circuit system" also encompasses only hardware circuitry or a processor (or multiple processors), or portions of hardware circuitry or a processor and / or their accompanying software and / or firmware implementations. The term "circuit system" also encompasses, for example and if applicable to a particular claim element, 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.

[0034] As used herein, the term "communication network" refers to a network that conforms to any suitable communication standard, such as 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 protocols, including but not limited to fourth-generation (4G), 4.5G, future fifth-generation (5G) communication protocols, future sixth-generation (6G) communication protocols, and / or any other protocols currently known or to be developed in the future. Embodiments of this disclosure can be applied to various communication systems. Given the rapid development of communications, there will naturally be future types of communication technologies and systems through which this disclosure can be embodied. This should not be construed as limiting the scope of this disclosure to the systems described above.

[0035] As used herein, the term "network device" or "network node" refers to a node in a communication network through which terminal devices access the network and receive services. Depending on the terminology and technology used, a network device can refer to a system simulator, 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 Header (RH), a Remote Radio Header (RRH), a relay, a low-power node (such as a femtosecond or picosecond), etc.

[0036] The term "terminal device" refers to any terminal device capable of wireless communication. By way of example and not 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, tablets, 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 client devices (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 the context of industrial and / or automated processing chains), consumer electronics devices, devices operating on commercial and / or industrial wireless networks, etc. In the following description, the terms “terminal equipment”, “communication equipment”, “terminal”, “user equipment”, and “UE” may be used interchangeably.

[0037] Since a major share of the operating costs (OPEX) for mobile network operators stems from the energy expenditure required to operate the radio access network (RAN), efforts to reduce power consumption at the network end of communication systems are ongoing to conserve energy and reduce costs. In particular, various techniques for achieving network energy savings have been evaluated in the 3GPP Release 18 study and captured in several technical reports (TRs), such as TR.38.864. For example, adaptation in the spatial and power domains is one such technique that has been considered recently.

[0038] Currently, downlink (DL) transmission power (e.g., power per resource element (RE) or per physical resource block (PRB)) is typically constant for all terminal devices within a cell and is based on the base station's maximum power. However, for network energy savings, such maximum power in some cells can be reduced collectively.

[0039] Alternatively, more dynamic DL transmit power adaptation can be used by network devices, for example, on the Physical Downlink Shared Channel (PDSCH). This means that the transmit power of the PDSCH can be dynamically changed, for example, based on channel quality, so that transmissions to the terminal devices can be performed at a lower power level when the terminal devices are close to the cell, and at a higher power level when the terminal devices are far from the cell. In other words, different power spectral densities can be used to schedule different PRBs to different terminal devices.

[0040] Using lower transmit power results in lower power consumption of the power amplifiers in the radio units at the base station, and thus can lead to network energy savings. Furthermore, in some cases, bandwidth can be adjusted in conjunction with transmit power to better meet Quality of Service (QoS) objectives.

[0041] To clarify the methods for enabling energy savings by applying adaptation in the power domain, it is particularly beneficial to ensure that the impact of channel state information (CSI) feedback from the terminal device is kept as low as possible to avoid increasing the burden on the terminal device and the additional power consumption associated with the reporting.

[0042] When the transmit output power used for PDSCH transmission to the terminal device is reduced, in order to ensure the target block error rate (BLER), the modulation and coding scheme (MCS) used for transmission may have to be reduced compared to the case without power reduction.

[0043] Such transmit power and MCS adaptation at a base station lacking sufficient CSI feedback from the terminal device can lead to an increased likelihood of retransmissions, and thus degraded performance, which in turn can increase power consumption. On the other hand, multiple CSI feedbacks from the terminal device for different "powerControlOffset" values ​​(which can indicate the power offset of the PDSCH and non-zero power (NZP) CSI reference signals) can cause CSI reporting overhead. Therefore, there is a need to provide components for the terminal device to provide appropriate assistance to the network device in performing power reduction while minimizing CSI reporting overhead and associated costs.

[0044] In view of the above, exemplary embodiments of this disclosure provide a solution for power reduction that can effectively provide auxiliary information to network devices to facilitate power reduction. For example, a terminal device can receive one or more Channel State Information (CSI) reporting criteria related to transmit power reduction at the network device from the network device. The terminal device can determine information associated with the power offset for transmit power reduction at the network device based on one or more CSI reporting criteria, and send a CSI report to the network device including information associated with the power offset information. The solution provided by this disclosure can effectively reduce transmit power at network devices, achieving network energy and cost savings, and minimizing CSI reporting overhead and associated costs.

[0045] Figure 1 Examples of network environments 100 in which some exemplary embodiments of the present disclosure may be implemented are illustrated. In the description of the exemplary embodiments of the present disclosure, network environment 100 may also be referred to as communication system 100 (e.g., part of a communication network).

[0046] like Figure 1 As shown, the communication system 100 may include a terminal device (hereinafter also referred to as a user equipment or UE) 110 and a network device 130. In some other embodiments, the terminal device 110 and the network device 130 may be any electronic device that supports wired / wireless communication. The network device 130 may communicate with the terminal device 110. In the communication network environment 100, the link from the network device 130 to the terminal device 110 may be referred to as a downlink (DL), the link from the terminal device 110 to the network device 130 may be referred to as an uplink (UL), and the link between the terminal device 110 and the peer terminal device may be referred to as a sidelink.

[0047] In the downlink, network device 130 is a transmitting (TX) device (or transmitter), and terminal device 110 is a receiving (RX) device (or receiver). In the uplink, terminal device 110 is a transmitting (TX) device (or transmitter), and network device 130 is an RX device (or receiver). In some embodiments, network device 130 and terminal device 110 can communicate via a direct link / channel.

[0048] It should be understood that, such as Figure 1 The number of terminal devices and network devices shown in Environment 100 are for illustrative purposes only and do not imply any limitation on the scope of this disclosure. In some example embodiments, Environment 100 may include any number of terminal devices and / or any number of network devices.

[0049] Communication between devices in communication system 100 can be implemented according to any suitable communication protocol(s), 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), and sixth-generation (6G), wireless local area network communication protocols (such as IEEE 802.11), and / or any other protocol currently known or to be developed in the future. 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 multiplexing (OFDM), discrete Fourier transform extended OFDM (DFT-s-OFDM), and / or any other technology currently known or to be developed in the future.

[0050] Figure 2 An example signaling procedure 200 for performing power reduction for a communication system according to some embodiments of the present disclosure is illustrated. For purposes of discussion, procedure 200 will be referred to... Figure 1 As described. Process 200 may involve terminal devices, such as... Figure 1 The terminal device 110 shown is illustrated. Process 200 may also involve a network device. In some embodiments, the network device may include, for example, Figure 1 The network device 130 shown is included. It should be understood that during process 200, it is possible to add, omit, or modify one or more operations, or the operations may be performed in any suitable order without departing from the scope of this disclosure.

[0051] In process 200, network device 130 may determine (210) one or more Channel State Information (CSI) reporting criteria associated with a reduction in transmit power at the network device. In some embodiments, network device 130 may determine one or more CSI reporting criteria with the aim of guiding its own power reduction decisions according to a decision strategy. In some embodiments, the decision strategy may take into account the Quality of Service (QoS) of terminal device 110.

[0052] In some embodiments, one or more CSI reporting criteria and transmit power can be reduced on the physical downlink shared channel (PDSCH) by how much, compared to a configured parameter “powerControlOffset” as configured in a CSI reference signal (CSI-RS) (e.g., non-zero power CSI-RS), while having acceptable performance implications (e.g., with limited / controlled throughput, latency performance degradation). Advantageously, network device 110 can benefit from knowing when to use a relatively low modulation and coding scheme (MCS) and how many better MCSs can be supported by terminal device 110.

[0053] In some embodiments, one or more CSI reporting criteria are used by terminal device 110 to generate a CSI report, which includes supplementary information related to potential transmit power reduction at network device 130. This supplementary information may be associated with a power offset for transmit power reduction at the network device.

[0054] In some embodiments, one or more CSI reporting criteria may include one or more parameters for reducing transmit power at network devices. These one or more parameters may include at least one or more of the following: reduced Channel Quality Indicator (CQI) index, reduced Rank Indicator (RI) value, reduced modulation order, reduced coding rate, or any combination thereof.

[0055] In some embodiments, each of the one or more parameters can be configured with a corresponding value. Therefore, network device 130 can configure (220) one or more CSI reporting standards. For example, network device 130 can configure CQI index reduction using a first value (e.g., value 2), which indicates that the CQI index is reduced by 2 from the original CQI index estimated by terminal device 110 based on the received CSI reference signal. Similarly, network device 130 can configure RI value reduction using a second value (e.g., value 1), which indicates that the RI value is reduced by 1 from the original RI value estimated by terminal device 110 based on the received CSI reference signal. Similarly, network device 130 can configure modulation order reduction using a third value (e.g., value 2), which indicates that the modulation order is reduced by 2 from the original modulation order estimated by terminal device 110 based on the received CSI reference signal. Network device 130 can configure a coding rate reduction via a fourth value (e.g., the value Δr), which indicates that the coding rate is reduced by Δr from the original coding rate, which is estimated by terminal device 110 based on the received CSI reference signal.

[0056] It should be understood that although the four types of parameters have been described above, this disclosure is not limited to the four types of parameters described. This disclosure may also include other types of parameters for reducing transmission power, for the terminal device 110 to generate auxiliary information for power reduction at the network device 130.

[0057] Additionally, network device 130 can configure parameters with more than one value. For example, CQI reduction can be configured with values ​​1 and 2, and RI value reduction can be configured with values ​​1 and 2, etc. Network device 130 can configure each of the (multiple) determined parameters with one or more values.

[0058] Network device 130 can be configured with one or more CSI reporting standards in various forms. In some embodiments, network device 130 can create a sequence for one or more CSI reporting standards. In the created sequence, each CSI reporting standard is represented by a corresponding parameter for transmit power reduction, and each corresponding parameter can be configured with one or more values. An example of such a sequence is shown below for illustration: sequence{ CQI index decreases INTEGER(0,1,2) The RI value is decreased by INTEGER(0,1,2) (Example 1) }

[0059] Example 1 illustrates a sequence created by network device 130 to indicate multiple (e.g., two) CSI reporting standards, each corresponding to a parameter. As shown in Example 1, the sequence includes a first parameter for CQI index reduction and a second parameter for RI value reduction. The CQI index reduction parameter is configured with three values ​​ranging from 0 to 2, and the RI value reduction parameter is configured with three values ​​ranging from 0 to 2. In some embodiments, a value of 0 may indicate no reduction for the corresponding parameter.

[0060] Alternatively, network device 130 may configure one or more CSI reporting criteria as one or more sub-configurations in a CSI reporting configuration. In other words, one or more CSI reporting criteria corresponding to one or more parameters for power reduction may be represented by one or more sub-configurations. Each sub-configuration may include at least one of the one or more parameters for transmit power reduction at the network device. Each parameter in each sub-configuration may be configured with a value.

[0061] In some embodiments, each sub-configuration may include a parameter for power reduction, which has a configured value. Example 2 is shown below, illustrating the configuration of a parameter for CQI index reduction, with multiple configured values ​​correspondingly in multiple sub-configurations. CSI Report Configuration #0: • Sub-configuration #0 ○ CQI index decreased by -1 • Sub-configuration #1 ○ CQI index decreased by -2 • Sub-configuration #2 ○ CQI index reduced by -3 (Example 2)

[0062] Each sub-configuration includes the same parameter (e.g., CQI reduction) with a configured value. For example, the first sub-configuration corresponds to a CQI index reduction value configured as 1, the second sub-configuration corresponds to a CQI index reduction configured as 2, and the third sub-configuration corresponds to a CQI index reduction configured as 3.

[0063] Alternatively, for multiple CSI reporting standards, network device 130 can also be configured with multiple sub-configurations, each including parameters for the CSI reporting standard. Example 3 is shown below, illustrating the configuration for three parameters: CQI index reduction, RI value reduction, and modulation order reduction. CSI Reporting Configuration #0: (e.g., including more than one reporting standard) • Sub-configuration #0 ○ CQI index decreased by -1 • Sub-configuration #1 ○ RI decreases by -1 • Sub-configuration #2 ○ Modulation order reduced by 2 (Example 3)

[0064] In Example 3, each sub-configuration includes a parameter for a criterion (e.g., CQI reduction, RI value reduction, or modulation order reduction) with a configured value. For example, the first sub-configuration corresponds to a CQI index reduction value configured as 1, the second sub-configuration corresponds to an RI value reduction configured as 1, and the third sub-configuration corresponds to a modulation order reduction configured as 2.

[0065] In some embodiments, network device 130 can configure each sub-configuration with more than one parameter. Example 4 is shown below, illustrating a configuration for three CSI reporting standards, including three parameters: CQI index reduction, RI value reduction, and modulation order reduction. CSI Reporting Configuration #0: (e.g., including more than one reporting standard) • Sub-configuration #0 ○ CQI index decreased by -1, RI decreased by -1 • Sub-configuration #1 ○ RI decreases by -1 • Sub-configuration #2 ○ RI decreases by -1, modulation order decreases by -2 (Example 4)

[0066] As shown in Example 4, each sub-configuration includes one or more parameters. For example, the first sub-configuration corresponds to a CQI index reduction value configured as 1 and an RI value reduction configured as 1, the second sub-configuration corresponds to an RI value reduction configured as 1, and the third sub-configuration corresponds to an RI value reduction configured as 1 and a modulation order reduction configured as 2.

[0067] Alternatively, for common parameters with commonly configured values, network device 130 can extract the common parameters with commonly configured values ​​from sub-configurations and configure the common parameters in parallel with the sub-configurations, thereby reducing communication overhead. Example 5 is shown below, illustrating a configuration for three CSI reporting standards with parameters for CQI index reduction, RI value reduction, and modulation order reduction, wherein the commonly configured RI value reduction is extracted and configured in parallel with the sub-configurations. CSI Report Configuration #0: • RI decreases by -1 • Sub-configuration #0 ○ CQI index decreased by -1, • Sub-configuration #1 ○ Encoding rate decreased by -1, • Sub-configuration #2 ○ Modulation order reduced by 2 (Example 5)

[0068] As shown in Example 5, each sub-configuration may include one or more parameters, and a commonly configured parameter (e.g., a decrease in the RI value with a value of 1) is extracted from the sub-configuration and configured in parallel with the sub-configuration. That is, as shown in Example 5, all sub-configurations are configured on the premise that the decrease in the RI value is configured with a value of 1.

[0069] It should be understood that Examples 1 to 5 are presented for illustrative purposes only, and other parameters and values ​​may be configured for CSI reporting standards according to embodiments of this disclosure. Furthermore, any other example of any combination of parameters may be organized by network device 130 in various ways to represent one or more CSI reporting standards, the parameters having any number of configured values.

[0070] Network device 110 may send (230) one or more CSI reporting standards to terminal device 130. In some embodiments, network device 130 may send a CSI reporting configuration to terminal device 110, and the sent CSI reporting configuration may include one or more CSI reporting standards. Network device 130 may send the CSI reporting configuration to terminal device 110 via Radio Resource Control (RRC) signaling.

[0071] Specifically, in some embodiments, network device 130 may send a CSI report configuration to terminal device 110, the CSI report configuration including a sequence of one or more CSI report criteria (e.g., the sequence shown in Embodiment 1). The sequence may include one or more criteria, each CSI report criterion being configured with one or more values. In some embodiments, each CSI report criterion in the sequence corresponds to a parameter for reducing transmit power at the network device, such as a reduction in CQI index, a reduction in RI value, a reduction in modulation order, a reduction in coding rate, or any combination thereof.

[0072] Alternatively, network device 130 may send a CSI report configuration to terminal device 110, which includes one or more sub-configurations (e.g., as shown in Examples 2 to 5). One or more CSI report criteria are represented by one or more sub-configurations, and each sub-configuration may include a parameter from one or more parameters for reducing transmit power at the network device, such as CQI index reduction, RI value reduction, modulation order reduction, coding rate reduction, or any combination thereof.

[0073] Network device 130 can send CSI report configuration to terminal device 110 via RRC signaling. In some embodiments, the CSI report configuration can be activated or deactivated by RRC signaling. Alternatively, network device 130 can send physical layer (L1) signaling (such as downlink control information (DCI)) or media access control layer (L2) signaling (such as media access control (MAC) control unit (MAC-CE)) to terminal device 110 to activate or deactivate the CSI report configuration. In other words, the CSI report configuration can be activated or deactivated by L1 / L2 signaling.

[0074] Upon receiving one or more CSI report criteria from network device 130, terminal device 110 may determine (240) information associated with a power offset for reducing transmit power at the network based on the received one or more report criteria. In some embodiments, the power offset may include a value indicating how much transmit power the network 130 may reduce, and correspondingly, the power offset indicates the value of the power reduction for power back-off at the network device.

[0075] In some embodiments, terminal device 110 may determine information associated with power offset based on one or more received CSI reporting criteria. For a sequence received from network device 130, if more than one parameter is configured in the sequence, terminal device 110 may determine information associated with power offset based on combinations of parameters listed in the sequence. For example, assuming there are two parameters in the sequence, each with two values, in the case of a combination of a first parameter having a first value and a second parameter having a first value, terminal device 110 may determine first information associated with a first power offset. In the case of a combination of a first parameter having a first value and a second parameter having a second value, terminal device 110 may also determine second information associated with a second power offset, and so on, until all possible combinations of the first and second parameters have been implemented.

[0076] Taking Example 1 as an example, when both the CQI index and the RI value decrease to 0, the terminal device 110 can determine first information associated with a first power offset. When both the CQI index and the RI value decrease to 1, the terminal device 110 can determine second information associated with a second power offset. Furthermore, when both the CQI index and the RI value decrease to 2, the terminal device 110 can determine third information associated with a third power offset. For all other possible combinations of CQI index decrease and RI value decrease, the terminal device 110 can continuously determine information.

[0077] For example, for each sub-configuration of the CSI reporting standard (such as those included in the CSI reporting configuration), terminal device 110 can determine information associated with the corresponding power offset based on each sub-configuration. For instance, if terminal device 110 receives a CSI report including the configuration described in Example 2 above, terminal device 110 can determine the information associated with the power offset based on sub-configuration 0, sub-configuration 1, and sub-configuration 2, respectively. The detailed process of determining the information associated with the power offset will be described in detail below.

[0078] Terminal device 110 may send a (250) CSI report to network device 130, the CSI report including information associated with power offsets. If terminal device 110 determines that information is associated with multiple power offsets, terminal device 110 may send information with all power offsets to network device 130. In some embodiments, the information associated with power offsets is included in a regular CSI report and sent to network device 130. Alternatively, the information associated with power offsets may be encapsulated in a separate CSI report, different from the regular CSI report. Terminal device 110 may send both the separate CSI report and the regular CSI report to network device 130.

[0079] Network device 130 may activate (260) a transmit power reduction at the network based on received information associated with the power offset. In some embodiments, network device 130 may determine to activate (270) the transmit power reduction by taking into account the Quality of Service (QoS) of terminal device 110. It should be understood that network device 130 may determine to activate the transmit power reduction based on other considerations; for example, in some embodiments, the network device may determine to activate the transmit power reduction based on the maximum power reduction on the PDSCH. Accordingly, network device 130 may offset the transmit power reduction power in response to the activation of the transmit power reduction.

[0080] Advantageously, a solution for power reduction has been referenced. Figure 2 The solution described herein can effectively provide auxiliary information to network devices to facilitate power reduction. The solution provided in this disclosure can effectively reduce transmit power at network devices, achieving network energy and cost savings, and minimizing CSI reporting overhead and associated costs.

[0081] Figure 3 An example flowchart of a process 300 for determining information associated with power offset according to some embodiments of the present disclosure is illustrated. Process 300 may be performed by terminal device 110. It should be understood that in process 300, one or more operations may be added, omitted, modified, or the operations may be performed in any suitable order without departing from the scope of the present disclosure.

[0082] exist Figure 3 At point 302, terminal device 110 can receive one or more CSI reference signals (CSI-RS) from network device 130. In some embodiments, the one or more CSI-RS include an NZP-CSI-RS resource that provides a configured "powerControlOffset" for the PDSCH. The value of "powerControlOffset" can indicate the power offset for transmitting the PDSCH and non-zero power (NZP) CSI reference signals.

[0083] At 304, terminal device 110 may determine a CSI parameter value and a first value associated with a first transmit power at network device 130 based on one or more received CSI-RS. In some embodiments, the first value is associated with a first transmit power at network device 130, and the first value is estimated by terminal device 110 based on one or more received CSI-RS. For example, the first value may be estimated based on the transmit power used for CSI-RS and the value of "powerControlOffset".

[0084] At point 306, terminal device 110 can determine an updated CSI parameter value based on the difference between the CSI parameter value and the value of the corresponding parameter in one or more CSI reporting standards. Since the CSI reporting standards correspond to parameters configured with a reduced value, the updated CSI parameter value is the difference between the CSI parameter value and the reduced value. For example, if the CSI parameter value is a CQI index estimated from one or more CSI-RS and is 5, and the corresponding parameter for the CQI index reduction is configured to 1, then the updated CSI parameter value is 4.

[0085] At 308, terminal device 110 can determine a second value associated with the second transmit power at the network device based on the updated CSI parameter value. This second value, associated with the second transmit power, indicates the reduced power used for the updated CSI parameter value.

[0086] At 310, terminal device 110 can determine a reduction value associated with power offset based on a first value and a second value, wherein the second value is less than the first value. For example, because the second value is associated with a reduction in power determined for a CSI reporting standard configured by network device 130, terminal device 110 can determine the difference between the first value and the second value, and this difference identifies the reduction value associated with power offset.

[0087] For different conditions or sub-configurations configured by network device 130 for one or more CSI reporting standards, terminal device 110 may execute procedure 300 multiple times. For example, for another condition or sub-configuration with different parameters and / or different configured values ​​for power reduction, terminal device 110 may execute procedure 300 again to obtain another reduction value. Terminal device 110 may execute procedure 300 for all conditions or sub-configurations already configured by network device 130.

[0088] For example, network device 130 can be configured with two conditions for CQI index reduction: a first condition for CQI index reduction to 1, and a second condition for CQI index reduction to 2. Accordingly, terminal device 110 can perform process 300 twice, once for CQI index reduction to 1 and once for CQI index reduction to 2.

[0089] In some embodiments, terminal device 110 may send at least a power degradation value to network device 130 based on a CSI reporting configuration. The CSI reporting configuration may include one or more CSI reporting standards of various forms as described above. Terminal device 110 may report all power degradation values, each determined relative to all conditions or sub-configurations configured by network device 130 for one or more CSI reporting standards.

[0090] In some embodiments, terminal device 110 may report the determined power reduction values(s) in a regular CSI report, as well as the CSI parameter value determined at 304 and the first value determined at 304 that is associated with the first transmit power at network device 130. For example, terminal device 110 may send a CSI report to network device that includes one or more of the determined power reduction values(s) and the CSI parameter value or the first value associated with the first transmit power at network device.

[0091] Alternatively, terminal device 110 may report the determined power reduction values ​​in a separate CSI report, different from a regular CSI report. For example, terminal device 110 may send a first CSI report to network device 130, which includes one or more of CSI parameter values ​​or a first value associated with a first transmit power at the network device; and terminal device 110 may also send a second CSI report to network device 130, which includes at least a reduction value associated with the power offset.

[0092] In some embodiments, the first value may include a first signal-to-interference-plus-noise ratio (SINR) for the CSI parameter value, and the second value may include a second SINR value for the updated CSI parameter value. The CSI parameter may include one or more of the following: CQI index, RI value, modulation order, coding rate, or any combination thereof.

[0093] When the CSI parameter value includes the CQI index, terminal device 110 can determine the CQI index based on a first value associated with a first transmit power at the network device. For example, if the first value includes a first SINR, terminal device 110 can determine the first SINR based on the received CSI-RS, and then estimate the CQI index based on the first SINR. The determination of the CQI index can be referenced... Figure 4 Described.

[0094] Figure 4 The diagram illustrates an example of the relationship between CQI and SINR. Although the relationship between CQI and SINR... Figure 4 The relationship is shown as linear, but it should be noted that... Figure 4 The information is shown for illustrative purposes only, and there may be other relationships between CQI and SINR.

[0095] In some embodiments, terminal device 110 can obtain the measured transmit power at the network device based on one or more received CSI-RS. Based on the configured value of "powerControlOffset" and the measured transmit power, terminal device 110 can estimate the SINR associated with the transmit power on the PDSCH. For example, if the SINR is estimated to be P1, terminal device 110 can then estimate the SINR based on... Figure 4 The diagram shown determines the CQI. For example, the CQI associated with SINR P1 is 12.

[0096] In some embodiments, both the first SINR and the CQI index are estimated based on the received CSI-RS(s)(s) and can be used when there is no reduction in transmit power at the network device.

[0097] Alternatively, if the CSI parameter value includes an RI value, the terminal device 110 can determine the RI value based on one or more received CSI-RS. The terminal device 110 can determine the RI value based on CSI-RS in various ways, and for the sake of brevity and clarity, the specific process is omitted here.

[0098] Alternatively, if the CSI parameter value includes modulation order or coding rate, the terminal device 110 can determine the modulation order or coding rate based on a first value associated with a first transmit power at the network device. In some embodiments, the first value may include a first SINR. The terminal device 110 can estimate the modulation order or coding rate based on the first SINR, for example, by looking up a predefined table or by using a pre-drawn graph.

[0099] Figure 5 Another example signaling procedure 500 for performing power reduction for a communication system according to some embodiments of this disclosure is shown. For discussion purposes, procedure 500 will be referred to Figure 1 The process 500 is described. It may involve terminal devices, such as... Figure 1 The terminal device 110 shown is illustrated. Process 500 may also involve a network device. In some embodiments, the network device may include, for example, Figure 1 The network device 130 shown. It should be understood that in process 500, it is possible to add, omit, or modify one or more operations, or the operations may be performed in any suitable order without departing from the scope of this disclosure.

[0100] Figure 5 yes Figure 2An example implementation of this method includes a first value that may include a first signal-to-interference-plus-noise ratio (SINR) for the CSI parameter value, and a second value that is a second SINR for the updated CSI parameter value. The CSI parameter value may include a CQI index.

[0101] In process 500, network device 130 can configure one or more reporting standards for power reduction at the network for terminal device 110. These one or more reporting standards may include one or more CSI reporting standards. As an example and for illustrative purposes, one or more CSI reporting standards may be represented by the following two sub-configurations: CSI Report Configuration #0: • Sub-configuration #0 ○ CQI index decreased by -1; • Sub-configuration #1 ○ CQI index decreased by -2

[0102] In other words, in this example, there is a reporting criterion, which is a parameter for CQI index reduction. In the first sub-configuration, CQI index reduction is configured to a value of 1. In the second sub-configuration, CQI index reduction is configured to a value of 2.

[0103] At point 520, network device 130 can send a configured CSI reporting standard to terminal device 110. For example, network device 130 can send a CSI-measConfig message via RRC signaling. This CSI-measConfig message may include a CSI-ReportConfig message and a CSI-ResourceConfig message. The CSI-ResourceConfig message may include a "powerControlOffset" parameter, which indicates the power offset for transmitting the PDSCH and non-zero power (NZP) CSI reference signals. In some embodiments, one or more CSI reporting standards are included in a pwrReductionCriteria message, which may be included in the CSI-ReportConfig message.

[0104] At 530, terminal device 110 may receive a CSI-MeasConfig message via RRC signaling and estimate a first value associated with a first transmit power at the network device. In some embodiments, this first value includes SINR and may be represented by "SINR_original" throughout the description. Terminal device 110 may estimate SINR_original based on received CSI-RS (e.g., received from a CSI-ResourceConfig message). For example, terminal device 110 may obtain the measured transmit power at the network device based on the received CSI-RS. Based on the configured value of "powerControlOffset" in the CSI-RS signal and the measured transmit power, terminal device 110 may estimate SINR_original associated with the transmit power on the PDSCH.

[0105] Terminal device 110 can determine the CSI parameter value based on the estimated SINR_original. In some embodiments, the CSI parameter value may include a CQI index and may be represented as "CQI_original" throughout the description. For example, if SINR_original is estimated to be P1 at 530, terminal device 110 can determine the CSI parameter value based on, for example, P1 at 530. Figure 4 The diagram shown determines CQI_original. For example, the CQI_original associated with SINR_original P1 is 12. That is, terminal device 110 determines CQI_original to be 12.

[0106] At 550, terminal device 110 can estimate the reduction value of SINR_reduced based on the difference between CQI_original and the reduced value of the CQI index. SINR_reduced is associated with the power required to support the updated CSI parameter value "CQI_update", which is determined based on CQI_original and the reduced value of the CQI index configured for CSI reporting standards. As assumed herein, there are two sub-configurations provided by network device 130. Accordingly, there are two values ​​for CQI_update for SINR_reduced: a first value of CQI_original minus the reduced value of the CQI index, and a second value of CQI_original minus the reduced value of the CQI index. Accordingly, in this example, if CQI_original is 12, the two values ​​for CQI_update are 11 and 10, respectively.

[0107] Terminal device 110 can determine the SINR_reduced associated with CQI_update, for example, based on a graph illustrating the relationship between SINR and CQI. As in this example, there is only a reduction in the CQI index for power reduction, without any reduction for RI / modulation order / code rate, similar to the graph illustrating the relationship between SINR and CQI at a given RI / modulation order / code rate. Figure 4 It can be used to determine SINR_reduced in process 500, just as it is used to determine CQI_original. For example, terminal device 110 can... Figure 4 The relationship defined in [the code] is used to determine the first SINR_reduced based on the first CQI_update, and the second SINR_reduced based on the second CQI_update. Therefore, the first SINR_reduced is P2, and the second SINR_reduced is P3.

[0108] At 560, terminal device 110 can determine information associated with a power offset for power reduction at network device. The power offset is the difference between the original power and the updated power. In process 500, the SINR offset, indicating the difference between SINR_original and SINR_reduced, is associated with the power offset. For example, as shown in process 500, there are two SINR offsets associated with two power offsets: a first difference between a first SINR_reduced and SINR_original, and a second difference between a second SINR_reduced and SINR_original, which are (P1-P2) and (P1-P3), respectively, where P1>P2 and P1>P3. The SINR offset is associated with the power offset used for power backoff and will be reported to network device 130 for power reduction decisions.

[0109] At 570, terminal device 110 may report the SINR offset associated with the power offset to network device 130. In some embodiments, terminal device 110 may report both CQI_original and the SINR offset to network device 130. In some embodiments, the SINR offset may include all offsets determined based on all sub-configurations. That is, terminal device 110 determines the offset for each sub-configuration, and terminal device 110 reports all determined offsets to network device 130. Regarding the example of process 500, terminal device 110 may report both of the SINR offsets for two sub-configurations to the network device, namely (P1-P2) and (P1-P3).

[0110] In some embodiments, terminal device 110 may encapsulate the SINR offset within a regular CSI report and send the CSI report to network device 130. The encapsulated CSI report may include CQI_original and the SINR offset for all sub-configurations. Alternatively, terminal device 110 may report the SINR offset to network device 130 in a separate CSI report, distinct from the regular CSI report. That is, the regular CSI report may include CQI_original, while the separate CSI report may include the SINR offset. The separate CSI report may also include multiple values ​​of CQI_update.

[0111] Network device 130 can receive CSI reports from terminal device 110 and understand CQI_original, CQI_update, and SINR offset. Network device 130 can send L1 / L2 signaling to terminal device 110. L1 / L2 signaling is used to activate and / or deactivate CSI reporting configuration. L1 / L2 signaling can also be used to activate and / or deactivate power reduction at terminal device 110. If L1 / L2 signaling indicates activation of power reduction, terminal device 110 can calculate information about the power offset and report this information to the network device. If L1 / L2 signaling indicates deactivation of power reduction, terminal device 110 can stop calculating information about the power offset and stop reporting this information to the network device, as shown at 590.

[0112] Network device 130 can determine the transmit power reduction and modulation / coding scheme for transmission to terminal device 110 based on the received CSI report and received information about power offset. In some embodiments, network device 130 can determine the active transmit power reduction by taking into account the quality of service (QoS) of terminal device 110. In some embodiments, the network device can determine the active transmit power reduction based on the maximum power reduction on the PDSCH.

[0113] It should be understood that, for the purpose of explanation, Figure 5 The sub-configuration with reduced CQI index is described with reference to this, but this disclosure is not limited thereto. Other CSI reporting criteria can also be configured, including reduced RI value, reduced modulation order, reduced rate, or any combination thereof. The process for determining information about power offset based on these parameters is similar to those described above, and for the sake of brevity and clarity, detailed procedures are omitted herein. Additionally, as... Figure 5The SINR shown is for illustrative purposes. This disclosure is not limited to SINR. Other parameters associated with the transmit power at the network device may also be applied, and the process for determining information about the power offset based on these parameters is similar to those described above.

[0114] Figure 6 An example flowchart illustrating the process for reducing transmission power is shown. Process 600 can be executed by terminal device 110. It should be understood that one or more operations may be added, omitted, or modified in process 600, or the operations may be executed in any suitable order without departing from the scope of this disclosure.

[0115] At 602, terminal device 110 can receive a CSI-ReportConfig message from the network device. The CSI-ReportConfig message can be configured by the network device (e.g., network device 130) for CSI reporting. In some embodiments, the CSI-ReportConfig message is received via RRC signaling.

[0116] At 604, terminal device 110 can determine SINR_original based on the received CSI-RS signal. The terminal device can also derive CQI_original based on the determined SINR_original. For example, terminal device 110 can obtain the measured transmit power at the network device based on the received CSI-RS. Based on the configured value of "powerControlOffset" in the CSI-RS, terminal device 110 can estimate the SINR_original associated with the transmit power on the PDSCH. Terminal device 110 can then determine the SINR_original based on a predetermined relationship between SINR and CQI recorded in various forms (e.g., such as...). Figure 4 (As shown in the diagram), determine CQI_original.

[0117] At 606, terminal device 110 may determine whether a configured power reduction standard exists, such as a CSI reporting standard indicated by pwrReductionCriteria. Terminal device 110 may process the received CSI-ReportConfig message and determine whether a configured power reduction standard is included in the CSI-ReportConfig message. If terminal device 110 determines that the CSI-ReportConfig message includes one or more configured power reduction standards for power reduction at the network, terminal device 110 may proceed to 608; otherwise, terminal device 110 proceeds to 611, whereby the terminal device reports the determined SINR_original and CQI_original to network device 130.

[0118] At point 608, terminal device 110 can determine the specific parameters used for the power reduction standard at the network. For example, as... Figure 6 As shown, terminal device 110 can determine whether the parameters include a CQI index reduction. If the CQI index is included, terminal device 110 can proceed to 610; otherwise, terminal device 110 can proceed to 611 to report the determined SINR_original and CQI_original to network device 130.

[0119] It should be understood that although a reduction in the CQI index is illustrated in 608, this is merely an example. Other parameters, such as a reduction in the RI value, a reduction in the modulation order, a reduction in coding, or any combination thereof, may be shown in 608 for determination, provided that the parameter is used as a CSI reporting standard for a reduction in transmit power at network devices.

[0120] At 610, terminal device 110 can estimate SINR_reduced based on the difference between CQI_original and the reduced value of CQI index, and derive the SINR offset associated with the power offset used for power backoff.

[0121] Terminal device 110 can determine the CSI parameter value based on the estimated SINR_original. In some embodiments, the CSI parameter value may include a CQI index and may be represented as "CQI_original" throughout the description. For example, if SINR_original is estimated to be P1, terminal device 110 can determine the CSI parameter value based on, for example, P1. Figure 4The diagram shown determines CQI_original. For example, CQI_original associated with SINR_original P1 is 12. That is, terminal device 110 determines CQI_original to be 12. Terminal device 110 can determine CQI_update based on the value of CQI_original and the reduced CQI index, which is configured for use with the CSI reporting standard. Terminal device 110 can then derive SINR_reduced based on CQI_update, which is associated with the power required to support CQI_update. Those skilled in the art can employ different methods to determine SINR based on CQI, and are not limited to these. Figure 4 The diagram shown.

[0122] Terminal device 110 can determine information associated with a power offset, which indicates a power backoff for reduced transmit power at network devices. The power offset is the difference between the original power and the updated power. The SINR offset, indicating the difference between SINR_original and SINR_reduced, is associated with the power offset. For example, terminal device 110 can determine the SINR offset associated with the power offset based on the difference between SINR_original and SINR_reduced.

[0123] In some embodiments, terminal device 110 may perform 610 multiple times, each time corresponding to a sub-configuration of the power reduction standard. Terminal device 110 may accordingly acquire multiple SINR offsets. That is, terminal device 110 may acquire multiple SINR offsets, which include all offsets determined for all sub-configurations.

[0124] At 612, terminal device 110 may report one or more acquired SINR offsets to network device 130. These one or more SINR offsets are associated with one or more power offsets, respectively. In some embodiments, terminal device 110 may report CQI_original and one or more SINR offsets to the network device. That is, terminal device 110 determines each offset for each sub-configuration, and terminal device 110 may report all determined offsets to network device 130.

[0125] In some embodiments, terminal device 110 may encapsulate one or more SINR offsets in a regular CSI report and send the CSI report to network device 130. The encapsulated CSI report may include CQI_original for all sub-configurations and one or more SINR offsets. Alternatively, terminal device 110 may report one or more SINR offsets to network device 130 in a separate CSI report, different from the regular CSI report. That is, the regular CSI report may include CQI_original, while the separate CSI report may include one or more SINR offsets. The separate CSI report may also include one or more values ​​of CQI_update.

[0126] In some embodiments, terminal device 110 is configured with NZP-CSI-RS resources that provide powerControlOffset for PDSCH. The terminal device can estimate an appropriate CQI, for example, based on a configured CQI table, for conditions where transport blocks with a powerControlOffset corresponding to the CQI index, as well as the MCS and coding rate, can also be received within BLER limits. The terminal device can report this CQI to the network device. The network device scheduler decides whether to select the same CQI or a different CQI. In practice, link adaptation allows for an adjustment to the CQI when determining the MCS used for DL ​​allocation.

[0127] From a network energy-saving perspective, network devices can choose a lower MCS and apply lower power to PDSCH transmissions of certain terminal devices experiencing good channel conditions. Before applying power reduction, it is beneficial for network devices to understand how much power can be reduced and tolerated by a particular terminal device.

[0128] Figure 7 A flowchart 700 illustrating a method implemented at a terminal device according to some example embodiments of the present disclosure is shown. For discussion purposes, method 700 will be referred to Figure 1 Described from the perspective of terminal device 110

[0129] At 720, the terminal device receives one or more Channel State Information (CSI) reporting criteria related to the reduction in transmit power at the network device from the network device. At 740, the terminal device determines information associated with the power offset for the reduction in transmit power at the network device based on one or more CSI reporting criteria. At 760, the terminal device sends a CSI report including information associated with the power offset to the network device.

[0130] In some embodiments, one or more CSI reporting criteria may include one or more parameters for reducing transmit power at network devices. In some embodiments, one or more parameters may include one or more of the following: reduced Channel Quality Indicator (CQI) index, reduced Rank Indicator (RI) value, reduced modulation order, reduced coding rate, or any combination thereof.

[0131] In some embodiments, the terminal device may receive one or more CSI reference signals (CSI-RS) from the network device, and determine CSI parameter values ​​and a first value associated with a first transmit power at the network device based on one or more CSI-RS.

[0132] In some embodiments, the terminal device is configured to determine information associated with power offset by: determining an updated CSI parameter value based on the difference between a CSI parameter value and the value of a corresponding parameter in at least one CSI reporting standard; determining a second value associated with a second transmit power at the network device based on the updated CSI parameter value; and determining a reduction value associated with power offset based on the first and second values. In some embodiments, the second value is less than the first value.

[0133] In some embodiments, the first value is a first signal-to-interference-plus-noise ratio (SINR) for the CSI parameter value, and the second value is a second SINR for the updated CSI parameter value.

[0134] In some embodiments, CSI parameter values ​​may include one or more of the following: CQI index, RI value, modulation order, coding rate, or any combination thereof.

[0135] In some embodiments, the terminal device is configured to determine the CSI parameter value by at least one of the following: if the CSI parameter value includes a CQI index, determining the CQI index based on a first value associated with a first transmit power at the network device; or if the CSI parameter value includes an RI value, determining the RI value based on one or more received CSI-RS.

[0136] In some embodiments, the terminal device is configured to determine the CSI parameter value by at least the following: when the CSI parameter value includes modulation order or coding rate, determining the modulation order or coding rate based on a first value associated with a first transmit power at the network device.

[0137] In some embodiments, the terminal device may be configured to report at least a reduced value to the network device by sending a CSI report that includes information associated with power offset.

[0138] In some embodiments, the terminal device may be configured to send a CSI report including information associated with power offset by: sending a first CSI report to a network device, the first CSI report including one or more of the following: a CSI parameter value or a first value associated with a first transmit power at the network device; and sending a second CSI report to the network device, the second CSI report including at least a reduction value associated with power offset.

[0139] In some embodiments, the terminal device is configured to receive one or more CSI reporting standards by receiving CSI reporting configuration from the network device via Radio Resource Control (RRC) signaling. In some embodiments, the CSI reporting configuration may include one or more sub-configurations, the one or more CSI reporting standards being represented by one or more sub-configurations, and each sub-configuration may include a parameter from one or more parameters for reducing transmit power at the network device.

[0140] In some embodiments, the CSI reporting configuration can be activated or deactivated by RRC signaling.

[0141] In some embodiments, the CSI report configuration can be activated by physical layer (L1) signaling or media access control layer (L2) signaling, or deactivated by L1 signaling or L2 signaling.

[0142] Figure 8 A flowchart 800 illustrating a method implemented at a network device according to some example embodiments of the present disclosure is shown. For discussion purposes, method 800 will be referred to Figure 1 It is described from the perspective of network device 130.

[0143] At 820, the network device determines one or more Channel State Information (CSI) reporting criteria related to the reduction in transmit power at the network device for the terminal device. At 840, the network device sends at least one CSI reporting criterion to the terminal device. At 860, the network device receives a CSI report from the terminal device, which includes information associated with the power offset used for the reduction in transmit power at the network device.

[0144] In some embodiments, one or more CSI reporting criteria may include one or more parameters for a reduction in transmit power at a network device, and the one or more parameters may include one or more of the following: a reduction in the Channel Quality Indicator (CQI) index, a reduction in the Rank Indicator (RI) value, a reduction in the modulation order, a reduction in the coding rate, or any combination thereof.

[0145] In some embodiments, a network device may activate power reduction at the network device based on one or more of the following: maximum power reduction on the Physical Downlink Shared Channel (PDSCH), target quality of service of the terminal device, or any combination thereof.

[0146] In some embodiments, the network device may send one or more CSI reference signals (CSI-RS) to the terminal device. In some embodiments, the CSI parameter value and a first value associated with a first transmit power at the network device are determined by the terminal device based on one or more CSI-RS.

[0147] In some embodiments, the CSI parameter value may include one or more of the following: CQI index, RI value, modulation order, coding rate, or any combination thereof.

[0148] In some embodiments, the information associated with the power offset may include a reduction in transmit power at the network device.

[0149] In some embodiments, the reduced value is determined by the terminal device based on a first value for the CSI parameter value and a second value for the updated CSI parameter value, and the second value is associated with a second transmit power at the network device and is determined based on the updated CSI parameter value.

[0150] In some embodiments, the first transmit power is greater than the second transmit power, and the updated CSI parameter value can indicate the difference between the CSI parameter value and the value of the corresponding parameter in one or more CSI reporting standards.

[0151] In some embodiments, the first value may include a first signal-to-interference-plus-noise ratio (SINR) value for the CSI parameter value, and the second value may include a second SINR value for the updated CSI parameter value.

[0152] In some embodiments, the network device is configured to receive a CSI report including information associated with power offset by receiving at least a reduction value associated with power offset from the end device.

[0153] In some embodiments, the network device is configured to receive a CSI report including information associated with power offset by: receiving a first CSI report from a terminal device, the first CSI report including one or more of the following: a CSI parameter value or a first value associated with a first transmit power at the network device; and receiving a second CSI report from the terminal device, the second CSI report including at least a decrease value associated with power offset.

[0154] In some embodiments, the network device is configured to send one or more CSI report standards to the terminal device by sending a CSI report configuration to the terminal device via Radio Resource Control (RRC) signaling, wherein the CSI report configuration may include one or more sub-configurations, the one or more CSI report standards being represented by one or more sub-configurations, and each sub-configuration may include a parameter from one or more parameters for reducing transmit power at the network device.

[0155] In some embodiments, the CSI reporting configuration can be activated or deactivated by RRC signaling.

[0156] In some embodiments, a network device may send physical layer (L1) signaling or media access control layer (L2) signaling to a terminal device to activate or deactivate the CSI reporting configuration.

[0157] In some embodiments, the apparatus capable of performing method 700 (e.g., a terminal device) may include components for performing the corresponding steps of method 700. These components may be implemented in any suitable form. For example, the components may be implemented in a circuit system or a software module.

[0158] In some embodiments, the apparatus may include components for receiving from a network device one or more Channel State Information (CSI) reporting criteria related to a reduction in transmit power at the network device. The apparatus may also include components for determining information associated with a power offset for the reduction in transmit power at the network device based on one or more CSI reporting criteria. The apparatus may further include components for sending a CSI report including the information associated with the power offset to the network device.

[0159] In some embodiments, one or more CSI reporting criteria may include one or more parameters for reducing transmit power at network devices. In some embodiments, one or more parameters may include one or more of the following: reduced Channel Quality Indicator (CQI) index, reduced Rank Indicator (RI) value, reduced modulation order, reduced coding rate, or any combination thereof.

[0160] In some embodiments, the apparatus may further include components for receiving one or more CSI reference signals (CSI-RS) from a network device, and components for determining CSI parameter values ​​and a first value associated with a first transmit power at the network device based on one or more CSI-RS.

[0161] In some embodiments, the components for determining information associated with power offset may include: components for determining an updated CSI parameter value based on the difference between the CSI parameter value and the value of a corresponding parameter in at least one CSI reporting standard; components for determining a second value associated with a second transmit power at the network device based on the updated CSI parameter value; and components for determining a reduction value associated with power offset based on the first and second values. In some embodiments, the second value is less than the first value.

[0162] In some embodiments, the first value is a first signal-to-interference-plus-noise ratio (SINR) for the CSI parameter value, and the second value is a second SINR for the updated CSI parameter value.

[0163] In some embodiments, CSI parameter values ​​may include one or more of the following: CQI index, RI value, modulation order, coding rate, or any combination thereof.

[0164] In some embodiments, the component for determining the CSI parameter value includes at least one of the following: if the CSI parameter value includes a CQI index, a component for determining the CQI index based on a first value associated with a first transmit power at the network device; or if the CSI parameter value includes an RI value, a component for determining the RI value based on one or more received CSI-RS.

[0165] In some embodiments, the component for determining the CSI parameter value includes at least: a component for determining the modulation order or coding rate based on a first value associated with a first transmit power at the network device, when the CSI parameter value includes a modulation order or coding rate.

[0166] In some embodiments, the component for sending a CSI report including information associated with power offset may include: a component for reporting at least a reduced value to the network device based on the CSI report configuration.

[0167] In some embodiments, the components for sending a CSI report including information associated with power offset may include: components for sending a first CSI report to a network device, the first CSI report including one or more of the following: a CSI parameter value or a first value associated with a first transmit power at the network device; and components for sending a second CSI report to the network device, the second CSI report including at least a decrease value associated with power offset.

[0168] In some embodiments, the components for receiving one or more CSI report standards may include components for receiving CSI report configuration from a network device via Radio Resource Control (RRC) signaling. In some embodiments, the CSI report configuration may include one or more sub-configurations, the one or more CSI report standards being represented by one or more sub-configurations, and each sub-configuration may include a parameter from one or more parameters for reducing transmit power at the network device.

[0169] In some embodiments, the CSI reporting configuration can be activated or deactivated by RRC signaling.

[0170] In some embodiments, the CSI report configuration can be activated by physical layer (L1) signaling or media access control layer (L2) signaling, or deactivated by L1 signaling or L2 signaling.

[0171] In some embodiments, the apparatus further includes components for performing other steps in some embodiments of method 700. In some embodiments, the components include at least one processor and at least one memory, the at least one memory including computer program code, the at least one memory and the computer program code being configured, together with the at least one processor, to cause execution of the apparatus.

[0172] In some embodiments, an apparatus capable of performing method 800 (e.g., a network device) may include components for performing the corresponding steps of method 800. These components may be implemented in any suitable form. For example, the components may be implemented in a circuit system or a software module.

[0173] In some embodiments, the apparatus may include components for determining one or more Channel State Information (CSI) reporting criteria associated with a reduction in transmit power at a network device for a terminal device. The apparatus may include components for transmitting at least one CSI reporting criterion to the terminal device. The apparatus may include components for receiving a CSI report from the terminal device, the CSI report including information associated with a power offset for the reduction in transmit power at the network device.

[0174] In some embodiments, one or more CSI reporting criteria may include one or more parameters for a reduction in transmit power at a network device, and the one or more parameters may include one or more of the following: a reduction in the Channel Quality Indicator (CQI) index, a reduction in the Rank Indicator (RI) value, a reduction in the modulation order, a reduction in the coding rate, or any combination thereof.

[0175] In some embodiments, the apparatus may include components for activating power reduction at a network device based on one or more of the following: maximum power reduction on the Physical Downlink Shared Channel (PDSCH), target quality of service of the terminal device, or any combination thereof.

[0176] In some embodiments, the apparatus may include components for transmitting one or more CSI reference signals (CSI-RS) to a terminal device. In some embodiments, the CSI parameter values ​​and a first value associated with a first transmit power at the network device are determined by the terminal device based on one or more CSI-RS.

[0177] In some embodiments, CSI parameter values ​​may include one or more of the following: CQI index, RI value, modulation order, coding rate, or any combination thereof.

[0178] In some embodiments, the information associated with the power offset may include a reduction in transmit power at the network device.

[0179] In some embodiments, the reduced value is determined by the terminal device based on a first value for the CSI parameter value and a second value for the updated CSI parameter value, and the second value is associated with a second transmit power at the network device and is determined based on the updated CSI parameter value.

[0180] In some embodiments, the first transmit power is greater than the second transmit power, and the updated CSI parameter value can indicate the difference between the CSI parameter value and the value of the corresponding parameter in one or more CSI reporting standards.

[0181] In some embodiments, the first value may include a first signal-to-interference-plus-noise ratio (SINR) value for the CSI parameter value, and the second value may include a second SINR value for the updated CSI parameter value.

[0182] In some embodiments, the component for receiving a CSI report including information associated with power offset may include: a component for receiving at least a reduction value associated with power offset from the terminal device.

[0183] In some embodiments, the components for receiving a CSI report including information associated with power offset may include: components for receiving a first CSI report from a terminal device, the first CSI report including one or more of the following: a CSI parameter value or a first value associated with a first transmit power at a network device; and components for receiving a second CSI report from a terminal device, the second CSI report including at least a decrease value associated with power offset.

[0184] In some embodiments, the component for sending one or more CSI report standards to a terminal device may include: a component for sending a CSI report configuration to the terminal device via Radio Resource Control (RRC) signaling, wherein the CSI report configuration may include one or more sub-configurations, the one or more CSI report standards being represented by one or more sub-configurations, and each sub-configuration may include a parameter from one or more parameters for reducing transmit power at the network device.

[0185] In some embodiments, the CSI reporting configuration can be activated or deactivated by RRC signaling.

[0186] In some embodiments, the apparatus may include components for sending physical layer (L1) signaling or media access control layer (L2) signaling to a terminal device to activate or deactivate the CSI reporting configuration.

[0187] In some embodiments, the apparatus further includes components for performing other steps in some embodiments of method 800. In some embodiments, the components include at least one processor and at least one memory, the at least one memory including computer program code, the at least one memory and the computer program code being configured, together with the at least one processor, to cause execution of the apparatus.

[0188] Figure 9 A simplified block diagram of a device 900 suitable for implementing some example embodiments of the present disclosure is illustrated. Device 900 may be provided to implement a device, for example, as... Figure 1 The terminal device or network device shown is illustrated. As shown, device 900 includes one or more processors 910, one or more memories 920 coupled to processors 910, and one or more communication modules 940 coupled to processors 910.

[0189] Communication module 940 is used for bidirectional communication. Communication module 940 has at least one antenna to facilitate communication. The communication interface can represent any interface required for communication with other network elements.

[0190] Processor 910 can be of any type suitable for a local technology network, and by way of non-limiting example, 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 1900 can have multiple processors, such as application-specific integrated circuit chips that are time-dependent on a clock synchronized with the main processor.

[0191] 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), 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 during power outages.

[0192] Computer program 930 includes computer-executable instructions that are executed by the associated processor 910. Program 930 may be stored in ROM 924. Processor 910 may perform any appropriate actions and processes by loading program 930 into RAM 920.

[0193] The exemplary embodiments of this disclosure can be implemented by means of program 930, so that device 900 can perform as described in the reference. Figures 1 to 8 Any process discussed in this disclosure. Embodiments of this disclosure may also be implemented in hardware or by a combination of software and hardware.

[0194] In some embodiments, program 930 may be tangibly contained in a computer-readable medium, which may be included in device 900 (e.g., in memory 920) or in other storage devices accessible by device 900. Device 900 may load program 930 from the computer-readable medium into RAM 922 for execution. The computer-readable medium may include any type of tangible non-volatile storage, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc.

[0195] Figure 10 A block diagram illustrating an example of a computer-readable medium 1000 according to some exemplary embodiments of the present disclosure is shown. The computer-readable medium 1000 has a program 930 stored thereon. It should be noted that although the computer-readable medium 1000... Figure 10 The program is shown in the form of a CD or DVD, but the computer-readable medium 1000 may be any other form suitable for carrying or storing the program 930.

[0196] 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, which 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.

[0197] This disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions (such as those included in program modules) that are executed in a device on a target real or virtual processor to perform the functions described above. Figure 7 or Figure 8 The described method is 700 or 800. Typically, a program module includes routines, programs, libraries, objects, classes, components, data structures, etc., that perform specific tasks or implement specific abstract data types. 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 be executed on a local or distributed device. In a distributed device, the program module can reside on both local and remote storage media.

[0198] Program code used to perform the methods of this disclosure may be written in any combination of one or more programming languages. This 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 standalone software package), partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0199] In the context of this disclosure, computer program code or associated 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.

[0200] Computer-readable media can be computer-readable signal media or computer-readable storage media. Computer-readable media can include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or apparatuses, or any suitable combination of the foregoing. 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 fiber, portable optical disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. As used herein, the term "non-transient" is a limitation on the medium itself (i.e., tangible, not signaling), not a limitation on the persistence of data storage (e.g., RAM and ROM).

[0201] Furthermore, although the operations are described in a specific order, this should not be construed as requiring such operations to be performed in the specific order or sequence shown, or that all of the operations shown be performed, to achieve the desired result. In some cases, multitasking and parallel processing can be advantageous. Similarly, while several specific implementation details are included in the foregoing discussion, these details should not be construed as limiting the scope of this disclosure, but rather as descriptions of features specific to particular embodiments. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0202] 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 of implementing the claims.

Claims

1. A terminal device, 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 terminal device to at least: Receive at least one Channel State Information (CSI) report standard from the network device that relates to a reduction in transmit power at the network device; Based on the at least one CSI reporting standard, determine information associated with the power offset for the reduction in transmit power at the network device; as well as Send a CSI report to the network device, including the information associated with the power offset.

2. The terminal device of claim 1, wherein the at least one CSI reporting standard includes at least one parameter for the reduction in transmit power at the network device, and wherein the at least one parameter includes at least one of the following: a reduction in the Channel Quality Indicator (CQI) index, a reduction in the Rank Indicator (RI) value, a reduction in the modulation order, or a reduction in the coding rate.

3. The terminal device according to claim 1 or 2, wherein the terminal device is further configured to: Receive at least one CSI reference signal (CSI-RS) from the network device; and Based on the received at least one CSI-RS, determine the CSI parameter value and a first value associated with the first transmit power at the network device.

4. The terminal device of claim 3, wherein the terminal device is configured to determine the information associated with the power offset by: The updated CSI parameter value is determined based on the difference between the CSI parameter value and the value of the corresponding parameter in the at least one CSI reporting standard; Based on the updated CSI parameter value, a second value associated with the second transmit power at the network device is determined; as well as Based on the first value and the second value, a reduction value associated with the power offset is determined, wherein the second value is less than the first value.

5. The terminal device according to claim 3 or 4, wherein the first value is a first signal-to-interference-plus-noise ratio (SINR) for the CSI parameter value, and the second value is a second SINR for the updated CSI parameter value.

6. The terminal device according to any one of claims 3 to 5, wherein the CSI parameter value includes at least one of the following: CQI index, RI value, modulation order, or coding rate.

7. The terminal device according to any one of claims 3 to 6, wherein the terminal device is configured to determine the CSI parameter value by at least one of the following operations: If the CSI parameter value includes a CQI index, the CQI index is determined based on the first value associated with the first transmit power at the network device; or If the CSI parameter value includes an RI value, the RI value is determined based on the received at least one CSI-RS.

8. The terminal device according to any one of claims 3 to 6, wherein the terminal device is configured to determine the CSI parameter value by at least the following operations: When the CSI parameter value includes modulation order or coding rate, the modulation order or coding rate is determined based on the first value associated with the first transmit power at the network device.

9. The terminal device according to any one of claims 4 to 8, wherein the terminal device is configured to send the CSI report including the information associated with the power offset by: Based on the CSI report configuration, report at least the reduction value to the network device.

10. The terminal device according to any one of claims 4 to 8, wherein the terminal device is configured to send the CSI report including the information associated with the power offset by: A first CSI report is sent to the network device, the first CSI report including at least one of the following: the CSI parameter value or a first value associated with the first transmit power at the network device; and A second CSI report is sent to the network device, the second CSI report including at least the reduction value associated with the power offset.

11. The terminal device according to any one of claims 2 to 10, wherein the terminal device is configured to receive the at least one CSI reporting standard by: The network device receives a CSI report configuration via Radio Resource Control (RRC) signaling, wherein the CSI report configuration includes at least one sub-configuration, wherein the at least one CSI report criterion is represented by the at least one sub-configuration, and wherein each sub-configuration includes a parameter among the at least one parameters for the reduction of transmit power at the network device.

12. The terminal device of claim 11, wherein the CSI report configuration is activated or deactivated by RRC signaling.

13. The terminal device according to claim 11, wherein the CSI report configuration is activated by physical layer L1 signaling or media access control layer L2 signaling, or deactivated by the L1 signaling or the L2 signaling.

14. A network device, 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 network device to at least: For terminal devices, at least one Channel State Information (CSI) reporting standard is determined to be related to a reduction in transmit power at the network device; Send the at least one CSI report standard to the terminal device; as well as The terminal device receives a CSI report, which includes information associated with a power offset for the reduced transmit power at the network device.

15. The network device of claim 14, wherein the at least one CSI reporting standard includes at least one parameter for the reduction in transmit power at the network device, and wherein the at least one parameter includes at least one of the following: a reduction in the Channel Quality Indicator (CQI) index, a reduction in the Rank Indicator (RI) value, a reduction in the modulation order, or a reduction in the coding rate.

16. The network device according to claim 14 or 15, wherein the network device is further configured to: The power reduction at the network device is activated based on at least one of the following: Maximum power reduction on the physical downlink shared channel (PDSCH), or The target quality of service for the terminal device.

17. The network device according to any one of claims 14 to 16, wherein the network device is further configured to: At least one CSI reference signal CSI-RS is sent to the terminal device, wherein the CSI parameter value and a first value associated with a first transmit power at the network device are determined by the terminal device based on the at least one CSI-RS.

18. The network device of claim 17, wherein the CSI parameter value includes at least one of the following: CQI index, RI value, modulation order, or coding rate.

19. The network device of claim 17 or 18, wherein the information associated with the power offset includes a reduction value for the reduction in transmit power at the network device.

20. The network device according to claim 19, wherein: The reduction value is determined by the terminal device based on a first value for the CSI parameter value and a second value for the updated CSI parameter value, wherein the second value is associated with a second transmit power at the network device and is determined based on the updated CSI parameter value; The first transmission power is greater than the second transmission power, and The updated CSI parameter value indicates the difference between the CSI parameter value and the value of the corresponding parameter in the at least one CSI reporting standard.

21. The network device of claim 20, wherein the first value includes a first signal-to-interference-plus-noise ratio (SINR) value for the CSI parameter value, and the second value includes a second SINR value for the updated CSI parameter value.

22. The network device according to any one of claims 19 to 21, wherein the network device is configured to receive the CSI report including the information associated with the power offset by: The terminal device receives at least the reduction value associated with the power offset.

23. The network device according to any one of claims 19 to 21, wherein the network device is configured to receive the CSI report including the information associated with the power offset by: A first CSI report is received from the terminal device, the first CSI report including at least one of the following: the CSI parameter value or the first value associated with the first transmit power at the network device; and A second CSI report is received from the terminal device, the second CSI report including at least the reduction value associated with the power offset.

24. The network device according to any one of claims 15 to 23, wherein the network device is configured to send the at least one CSI reporting standard to the terminal device by: A CSI report configuration is sent to the terminal device via Radio Resource Control (RRC) signaling, wherein the CSI report configuration includes at least one sub-configuration, wherein the at least one CSI report standard is represented by the at least one sub-configuration, and wherein each sub-configuration includes a parameter among the at least one parameters for the reduction of transmit power at the network device.

25. The network device of claim 24, wherein the CSI report configuration is activated or deactivated by RRC signaling.

26. The network device of claim 24, wherein the network device is further configured to: Send physical layer L1 signaling or media access control layer L2 signaling to the terminal device to activate or deactivate the CSI report configuration.

27. A method comprising: At the terminal device, at least one Channel State Information (CSI) report standard related to a reduction in transmit power at the network device is received from the network device. Based on the at least one CSI reporting standard, determine information associated with the power offset for the reduction in transmit power at the network device; as well as Send a CSI report to the network device, including the information associated with the power offset.

28. A method comprising: At the network device, at least one Channel State Information (CSI) reporting standard is determined for the terminal device in relation to the reduction in transmit power at the network device. Send the at least one CSI report standard to the terminal device; as well as The terminal device receives a CSI report, which includes information associated with a power offset for the reduced transmit power at the network device.

29. An apparatus comprising: Components for receiving at a terminal device at a network device at at least one Channel State Information (CSI) report standard related to a reduction in transmit power at the network device; A component for determining, based on the at least one CSI reporting standard, information associated with the power offset for the reduced transmit power at the network device; as well as A component for sending a CSI report to the network device, including the information associated with the power offset.

30. An apparatus comprising: Components for determining at least one Channel State Information (CSI) reporting standard at a network device for a terminal device in relation to a reduction in transmit power at the network device; Components for sending the at least one CSI report standard to the terminal device; as well as A component for receiving a CSI report from the terminal device, the CSI report including information associated with a power offset for the reduced transmit power at the network device.

31. A non-transitory computer-readable medium comprising program instructions for causing a device to perform at least the method according to claim 27 or 28.

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