Power Control Method, Device, Equipment and Readable Storage Medium for Non-Terrestrial Networks

Abstract

Embodiments of the present application provide a power control method, apparatus, device, and readable storage medium, the method comprising: sending a power headroom report to a network node of a non-terrestrial network when a trigger condition is met; wherein the trigger condition includes one or more of the following: receiving first indication information sent by the network node of the non-terrestrial network; reaching a power headroom report threshold of the non-terrestrial network; changing the type of the non-terrestrial network; or switching between a non-terrestrial network and a terrestrial network by the terminal. In this embodiment of the present application, a PHR reporting trigger condition is added to address the characteristics of non-terrestrial networks, making the PHR reporting mechanism more applicable to non-terrestrial networks.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a power control method, apparatus, device, and readable storage medium for a non-terrestrial network. Background Art

[0002] Power Headroom Reporting (PHR) is used to report the difference between the estimated uplink transmit power and the maximum uplink transmit power of the terminal to the base station. After obtaining this information, the base station can perform corresponding power control and scheduling.

[0003] In the prior art, the triggering condition for PHR is that the periodic timer (periodicPHR-Timer) times out, or when the terminal has uplink resources to transmit new data, the prohibitPHR-Timer timer times out or has timed out, and the path loss change value has exceeded the downlink path loss change (dl-PathlossChange) dB since the last transmission power margin report.

[0004] Currently, PHR configuration is primarily applicable to terrestrial networks and cannot be applied to satellite networks. Furthermore, the pH range that the existing PHR can indicate is relatively small (-32...+38dB). In non-terrestrial networks (NTNs), such as satellite networks, communication distances are very long, requiring higher terminal transmit power. Therefore, configuring PHR in non-terrestrial networks is an urgent issue. Summary of the Invention

[0005] An object of the embodiments of the present application is to provide a power control method, apparatus, device, and readable storage medium to solve the problem of how to configure PHR in a non-terrestrial network.

[0006] In a first aspect, a power control method for a non-terrestrial network is provided, characterized by being executed by a terminal and comprising:

[0007] When a trigger condition is met, sending a power headroom report to a network node of the non-terrestrial network;

[0008] The trigger conditions include one or more of the following:

[0009] receiving first indication information sent by the network node of the non-terrestrial network;

[0010] reaching a power headroom report threshold of the non-terrestrial network;

[0011] The type of the non-terrestrial network changes;

[0012] The terminal performs handover between the non-terrestrial network and the terrestrial network.

[0013] Optionally, the first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed; or, the first indication information is used to indicate a mapping relationship between a pattern reported in a power headroom report and a change in a cell or beam of the network node of the non-terrestrial network.

[0014] Optionally, the first indication information instructs the terminal to obtain ephemeris information;

[0015] The sending of the power headroom report to the network node of the non-terrestrial network includes:

[0016] A power headroom report is sent to a network node of the non-terrestrial network according to the ephemeris information.

[0017] Optionally, sending a power headroom report to a network node of the non-terrestrial network according to the ephemeris information includes:

[0018] A power headroom report is sent to a network node of the non-terrestrial network according to the ephemeris information and the trajectory information of the terminal.

[0019] Optionally, the method further includes:

[0020] receiving second indication information sent by the network node of the non-terrestrial network;

[0021] Adjust the uplink transmit power of the terminal according to the second indication information.

[0022] Optionally, the second indication information is a TPC command, and adjusting the uplink transmit power of the terminal according to the second indication information includes:

[0023] The uplink transmission power of the terminal is adjusted according to the TPC command, where the TPC command is determined by a network node of the non-terrestrial network according to characteristics of the non-terrestrial network.

[0024] Optionally, the second indication information is one or more parameter factors, and adjusting the uplink transmit power of the terminal according to the second indication information includes:

[0025] determining a corresponding target parameter factor from the one or more parameter factors according to characteristics of the non-terrestrial network;

[0026] The uplink transmit power of the terminal is adjusted according to the target parameter factor and the TPC command.

[0027] Optionally, the format of the MAC CE of the power headroom report includes a first field, and the first field indicates that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network.

[0028] Optionally, the first field is a PH field, and the number of bits of the PH field is greater than a first preset value;

[0029] or,

[0030] The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

[0031] Optionally, the MAC CE also includes a second field, and the first field and the second field are used to indicate that the terminal sends a power headroom report to a network node of a non-terrestrial network, the first field indicates the power headroom level of a first granularity step, and the second field indicates the power headroom level of a second granularity step.

[0032] Optionally, the network node includes at least one of the following:

[0033] Space communication nodes;

[0034] Ground network nodes;

[0035] Wherein, the space communication node and the ground network node communicate via a first interface;

[0036] The space communication node includes at least one of the following protocol layers or functions:

[0037] Radio frequency unit;

[0038] Physical layer;

[0039] MAC layer;

[0040] RLC layer;

[0041] PDCP layer;

[0042] SDAP layer;

[0043] Xn application protocol layer;

[0044] Gn application protocol layer;

[0045] GTP-U layer;

[0046] IP layer;

[0047] F1 application protocol layer.

[0048] In a second aspect, a power control method for a non-terrestrial network is provided, which is performed by a network node of the non-terrestrial network, comprising:

[0049] receiving a power headroom report sent by a terminal when a trigger condition is met;

[0050] The trigger conditions include one or more of the following:

[0051] receiving first indication information sent by the network node of the non-terrestrial network;

[0052] reaching a power headroom report threshold of the non-terrestrial network;

[0053] The type of the non-terrestrial network changes;

[0054] The terminal performs handover between the non-terrestrial network and the terrestrial network.

[0055] Optionally, the first indication information is sent by a network node of the non-terrestrial network when a virtual cell is added or changed;

[0056] or,

[0057] The first indication information is used to indicate a mapping relationship between a pattern reported by a power headroom report and a change in a cell or beam of a network node of the non-terrestrial network.

[0058] Optionally, the method further includes:

[0059] Second indication information is sent to the terminal, where the second indication information instructs the terminal to adjust uplink transmit power.

[0060] Optionally, the second indication information is a TPC command, and the TPC command is determined by the network node of the non-terrestrial network according to characteristics of the non-terrestrial network;

[0061] or,

[0062] The second indication information is one or more parameter factors, where the parameter factors are related to characteristics of the non-terrestrial network. The parameter factors and the TPC command instruct the terminal to adjust uplink transmit power.

[0063] Optionally, the format of the MAC CE of the power headroom report includes a first field, and the first field indicates that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network.

[0064] Optionally, the first field is a PH field, and the number of bits of the PH field is greater than a first preset value;

[0065] or,

[0066] The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

[0067] Optionally, the MAC CE also includes a second field, and the first field and the second field are used to indicate that the terminal sends a power headroom report to a network node of a non-terrestrial network, the first field indicates the power headroom level of a first granularity step, and the second field indicates the power headroom level of a second granularity step.

[0068] Optionally, the network node includes at least one of the following:

[0069] Space communication nodes;

[0070] Ground network nodes;

[0071] Wherein, the space communication node and the ground network node communicate via a first interface;

[0072] The space communication node includes at least one of the following protocol layers or functions:

[0073] Radio frequency unit;

[0074] Physical layer;

[0075] MAC layer;

[0076] RLC layer;

[0077] PDCP layer;

[0078] SDAP layer;

[0079] Xn application protocol layer;

[0080] Gn application protocol layer;

[0081] GTP-U layer;

[0082] IP layer;

[0083] F1 application protocol layer.

[0084] In a third aspect, a power control device for a non-terrestrial network is provided, comprising:

[0085] A first sending module, configured to send a power headroom report to a network node of a non-terrestrial network when a trigger condition is met;

[0086] The trigger conditions include one or more of the following:

[0087] receiving first indication information sent by the network node of the non-terrestrial network;

[0088] reaching a power headroom report threshold of the non-terrestrial network;

[0089] The type of the non-terrestrial network changes;

[0090] The terminal performs handover between the non-terrestrial network and the terrestrial network.

[0091] In a fourth aspect, a power control device for a non-terrestrial network is provided, comprising:

[0092] A second receiving module is configured to receive a power headroom report sent by the terminal when a trigger condition is met;

[0093] The trigger conditions include one or more of the following:

[0094] receiving first indication information sent by the network node of the non-terrestrial network;

[0095] reaching a power headroom report threshold of the non-terrestrial network;

[0096] The type of the non-terrestrial network changes;

[0097] The terminal performs handover between the non-terrestrial network and the terrestrial network.

[0098] In a fifth aspect, a terminal is provided, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described in the first aspect.

[0099] In a sixth aspect, a network side device is provided, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described in the second aspect.

[0100] In a seventh aspect, a readable storage medium is provided, on which a program is stored. When the program is executed by a processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0101] In the embodiment of the present application, a PHR reporting trigger condition is added based on the characteristics of non-terrestrial networks, so that the PHR reporting mechanism can be better applied to non-terrestrial networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0103] Figure 1 This is a schematic diagram of a single-entry PHR MAC CE;

[0104] Figure 2 is a schematic diagram of a multi-entry PHR MACCE having a serving cell with a configured uplink having the highest ServCellIndex being less than 8;

[0105] Figure 3 This is a schematic diagram of configuring a multiple access PHR MAC CE where the highest ServCellIndex of an uplink serving cell is equal to or greater than 8;

[0106] Figure 4 This is one of the schematic diagrams of the power control method for a non-terrestrial network in an embodiment of the present application;

[0107] Figure 5 This is one of the schematic diagrams of the Single Entry PHR MAC CE in the embodiment of the present application;

[0108] Figure 6 This is the second schematic diagram of the Single Entry PHR MAC CE in the embodiment of the present application;

[0109] Figure 7 This is the third schematic diagram of the Single Entry PHR MAC CE in the embodiment of the present application;

[0110] Figure 8 This is a second schematic diagram of the power control method for a non-terrestrial network in an embodiment of the present application;

[0111] Figure 9 This is one of the schematic diagrams of a power control device for a non-terrestrial network in an embodiment of the present application;

[0112] Figure 10 This is the second schematic diagram of the power control device for the non-terrestrial network in an embodiment of the present application;

[0113] Figure 11 is a schematic diagram of a terminal in an embodiment of the present application;

[0114] Figure 12 It is a schematic diagram of the network side device in an embodiment of the present application. DETAILED DESCRIPTION

[0115] In power headroom reporting, PHR types can be divided into three types:

[0116] - Type 1: PHR of the Physical Uplink Shared Channel (PUSCH);

[0117] Type 2: PHR when the PUSCH and the Physical Uplink Control Channel (PUCCH) are transmitted concurrently on the same carrier.

[0118] - Type 3: PHR of Sounding Reference Signal (SRS).

[0119] There are two types of PHR media access control element (MAC CE): single entry (Single Entry) PHR MAC CE and multiple entry (Multiple Entry) PHR MAC CE, as shown in the following example: Figure 1 、 Figure 2 and Figure 3 shown.

[0120] Among them, P CMAX,f,c :If this field appears, it is used to indicate P CMAX,f,c To calculate the value of the pH domain.

[0121] P: Used to indicate that the MAC entity applies power backoff.

[0122] R: Reserved bit, set to "0".

[0123] V: Used to indicate that the PH value is based on a real transmission or a reference format. For Type 1 PH, V = 0 indicates real transmission on the uplink physical shared channel (PUSCH), and V = 1 indicates the use of the PUSCH reference format. For Type 2 PH, V = 0 indicates real transmission on the physical uplink control channel (PUCCH), and V = 1 indicates the use of the PUCCH reference format. For Type 3 PH, V = 0 indicates real transmission of SRS, and V = 1 indicates the reference format of the channel sounding reference signal (SRS). That is, for the above three formats, V = 0 indicates the associated P CMAX,f,c Domain, V=1 will not contain P CMAX,f,c .

[0124] Table 1: Power Headroom levels for PHR.

[0125] PH Power headroom level 0 POWER_HEADROOM_0 1 POWER_HEADROOM_1 2 POWER_HEADROOM_2 3 POWER_HEADROOM_3 … … 60 POWER_HEADROOM_60 61 POWER_HEADROOM_61 62 POWER_HEADROOM_62 63 POWER_HEADROOM_63

[0126] Table 2: Nominal UE transmit power level for PHR

[0127] <![CDATA[P CMAX,f,c ]]> Nominal terminal transmit power level 0 <![CDATA[P CMAX_C_00 ]]> 1 <![CDATA[P CMAX_C_01 ]]> 2 <![CDATA[P CMAX_C_02 ]]> … … 61 <![CDATA[P CMAX_C_61 ]]> 62 <![CDATA[P CMAX_C_62 ]]> 63 <![CDATA[P CMAX_C_63 ]]>

[0128] Power headroom reporting range and P CMAX,c,f The reporting scopes are shown in Tables 3 and 4 respectively.

[0129] Table 3: Power headroom report mapping

[0130] Reported Value Actual measured value POWER_HEADROOM_0 pH < -32 POWER_HEADROOM_1 -32≤PH<-31 POWER_HEADROOM_2 -31≤PH<-30 POWER_HEADROOM_3 -30≤PH<-29 … … POWER_HEADROOM_53 20≤PH≤21 POWER_HEADROOM_54 21≤PH≤22 POWER_HEADROOM_55 22≤PH≤24 POWER_HEADROOM_56 24≤PH≤26 POWER_HEADROOM_57 26≤PH≤28 POWER_HEADROOM_58 28≤PH≤30 POWER_HEADROOM_59 30≤PH≤32 POWER_HEADROOM_60 32≤PH≤34 POWER_HEADROOM_61 34≤PH≤36 POWER_HEADROOM_62 36≤PH≤38 POWER_HEADROOM_63 pH ≥ 38

[0131] Table 4: P CMAX,c.f 's mapping.

[0132] Reported Value Actual measured value unit <![CDATA[P CMAX_C_00 ]]> <![CDATA[P CMAX,c,f <-29]]> dBm <![CDATA[P CMAX_C_01 ]]> <![CDATA[-29≤P CMAX,c,f <-28]]> dBm PCMAX_C_02 <![CDATA[-28≤P CMAX,c,f <-27]]> dBm … … … PCMAX_C_61 <![CDATA[31≤P CMAX,c,f <32]]> dBm PCMAX_C_62 <![CDATA[32≤P CMAX,c,f <33]]> dBm PCMAX_C_63 <![CDATA[33≤P CMAX,c,f ]]> dBm

[0133] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0134] The term "comprise" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to the process, method, product, or apparatus. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, such as A and / or B, means that A alone, B alone, and both A and B are included.

[0135] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0136] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, although these technologies can also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

[0137] See also Figure 4 , an embodiment of the present application provides a power control method for a non-terrestrial network, which is executed by a terminal, and the specific steps include: step 401.

[0138] Step 401: When a trigger condition is met, a power headroom report is sent to a network node of a non-terrestrial network;

[0139] The trigger conditions include one or more of the following:

[0140] (1) receiving first indication information sent by a network node of the non-terrestrial network;

[0141] It can be understood that the network node of the non-terrestrial network can send the first indication information in an explicit or implicit manner.

[0142] Embodiment 1: The first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed. Exemplarily, the PHR reporting is indicated in a system message, or the virtual cell indication includes the requirement for PHR reporting.

[0143] The explanation of virtual cells is as follows: virtual cell 1 belongs to country 1, virtual cell 2 belongs to country 2, and virtual cell 1 and virtual cell 2 belong to the same physical cell 1; according to regulations, the transmission power of terminals in country 1 cannot be too high on the ground in country 2; when the terminal is within the range of virtual cell 1 and virtual cell 2 defined by the network, if it finds that the distance from the boundary of virtual cell 2 is greater than a certain threshold, a PHR is triggered and carries the reason; after receiving the PHR, the network node will control the uplink power of the terminal and change the modulation and coding scheme (MCS), transport block (TB) and other settings of the related data scheduling according to the information reported by the PHR and the recorded regulatory restrictions.

[0144] Implementation method 2: The first indication information is used to indicate a mapping relationship between a pattern reported by the power headroom report and a change in a cell or beam of a network node of the non-terrestrial network.

[0145] For example, the terminal does not move at a certain location. The satellite at this location is covered by satellite A at T0, becomes covered by satellite B at T1, becomes covered by satellite C at T2, ..., then the network node sends a pattern of T0, T1, T2... to the terminal according to the changes in the cell or beam, and then the UE triggers the PHR report according to this pattern.

[0146] Implementation method 3: The first indication information instructs the terminal to obtain ephemeris information, and the terminal sends a power headroom report to the network node of the non-terrestrial network based on the ephemeris information. Further, the power headroom report is sent to the network node of the non-terrestrial network based on the ephemeris information and the trajectory information of the terminal.

[0147] The network node sends an indication message to the terminal, and then the terminal triggers the reporting of the PHR based on the acquired ephemeris information and (optionally) the terminal's own trajectory information.

[0148] (2) reaching a power headroom report threshold of the non-terrestrial network;

[0149] In an embodiment of the present application, the PHR reporting threshold based on the terminal granularity in the prior art is changed to a PHR reporting threshold based on the network type granularity, that is, a PHR reporting threshold is defined for each network type, and the PHR threshold corresponding to different networks can be configured to the terminal through Radio Resource Control (RRC), and the terminal adaptively selects.

[0150] Network types may include: terrestrial networks, geostationary orbit (GEO) satellite networks, medium earth orbit (MEO) satellite networks, low earth orbit (LEO) satellite networks, drone networks, etc. It is understandable that the PHR reporting threshold is related to different uplink transmission power requirements caused by different network node altitudes;

[0151] (3) The type of the non-terrestrial network changes;

[0152] For example, LEO becomes GEO, or GEO becomes LEO.

[0153] (4) The terminal switches between the non-terrestrial network and the terrestrial network.

[0154] It is understandable that the network node of the non-ground network may be a network node on a satellite or a network node on a drone.

[0155] In this embodiment of the present application, the network node includes at least one of the following:

[0156] (a) Space communication node;

[0157] (b) ground network nodes;

[0158] wherein the space communication node and the ground network node communicate via a first interface;

[0159] The space communication node includes at least one of the following protocol layers or functions:

[0160] (1) Radio frequency unit;

[0161] (2) Physical layer;

[0162] (3) Medium Access Control (MAC) layer;

[0163] (4) Radio Link Control (RLC) layer;

[0164] (5) Packet data convergence protocol (PDCP) layer;

[0165] (6) Service Data Adaptation Protocol (SDAP) layer;

[0166] (7) Xn Application Protocol (AP) layer;

[0167] (8) Gn application protocol layer;

[0168] (9) General packet radio service Tunnel Protocol User Plan (GTP-U) layer;

[0169] (10) Internet Protocol (IP) layer;

[0170] (11)F1 application protocol layer.

[0171] In an embodiment of the present application, the method further includes: receiving second indication information sent by a network node of the non-terrestrial network; and adjusting the uplink transmission power of the terminal according to the second indication information.

[0172] Optionally, the second indication information is a transmission power control (TPC) command, and the adjusting the uplink transmission power of the terminal according to the second indication information includes: adjusting the uplink transmission power of the terminal according to the TPC command, and the TPC command is determined by the network node of the non-terrestrial network according to the characteristics of the non-terrestrial network.

[0173] That is, in the embodiment of the present application, the TPC command for uplink power control of the PUCCH or PUSCH used to correct the terminal transmit power can be redefined according to the characteristics of the non-terrestrial network, and is related to the different uplink transmit power requirements caused by the heights of network nodes of different non-terrestrial networks:

[0174] (1)0: -m db;

[0175] (2)1:0db;

[0176] (3)2:m db;

[0177] (4)3:m+n db.

[0178] For example, the altitude of the network node of the non-ground network is the 0th level altitude, the uplink transmission power is -m db, the altitude of the network node of the non-ground network is the 1st level altitude, the uplink transmission power is 0 db, the altitude of the network node of the non-ground network is the 2nd level altitude, the uplink transmission power is m db, the altitude of the network node of the non-ground network is the 3rd level altitude, the uplink transmission power is m+n db.

[0179] Optionally, the second indication information is one or more parameter factors (or weights), and adjusting the uplink transmit power of the terminal according to the second indication information includes:

[0180] According to the characteristics of the non-terrestrial network (such as the height of the network node of the non-terrestrial network), the corresponding target parameter factor is determined from the one or more parameter factors; according to the target parameter factor and the TPC command, the uplink transmission power of the terminal is adjusted.

[0181] That is, in an embodiment of the present application, the table of values of the cumulative value method of PUSCH / PUCCH of the TPC command remains unchanged, and the network node of the non-ground network sends one or more parameter factors corresponding to the heights of different network nodes to the terminal, and the terminal selects to use according to the height of the network node of the non-ground network.

[0182] In an embodiment of the present application, a new PHR media access control element (MACCE) of a non-terrestrial network is designed, in which the power headroom value and the maximum transmission power of the terminal are assigned according to the value range defined in the new table;

[0183] In this embodiment of the present application, the format of the power headroom report MAC CE includes a first field, which indicates that the terminal is sending a power headroom report to a network node in a non-terrestrial network. In other words, a new logical channel number is designed to indicate this new type of non-terrestrial network PHR MAC CE. Three solutions are designed for this MAC CE as follows:

[0184] 1) The first field is a power headroom (PH) field, and the number of bits of the PH field is greater than a first preset value.

[0185] That is, the number of bits of the PH field in the PHR MAC CE is increased, and the step size remains the original 1 to 2 dB.

[0186] 2) The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

[0187] That is, the indication step size of the existing PHR is uniformly increased, the number of bits of the PH field remains at 6 bits, but the granularity becomes coarser and the step size increases. That is, a table specifically used for satellite communications is designed in the existing protocol to describe the step size corresponding to each POWER_HEADROOM_m (power headroom_m);

[0188] 3) The MAC CE also includes a second field, and the first field and the second field are used to indicate that the terminal sends a power headroom report to a network node of a non-terrestrial network, the first field indicates a power headroom level (PH level) of a first granularity step, and the second field indicates a power headroom level of a second granularity step, and the first granularity (coarse granularity) is coarser than the second granularity (fine granularity).

[0189] That is, a field is added to the PHR MAC CE, that is, two fields are used to indicate the PHR, one field is used to indicate the PH level with a larger coarse-grained step size, and the other field is used to indicate the PH level with a smaller finer-grained step size.

[0190] In the embodiments of the present application, PHR reporting trigger conditions are added to address the characteristics of non-terrestrial networks. A new PHR reporting configuration is designed that expands the range of PH levels compared to the current PHR configuration, making the PHR reporting mechanism more suitable for non-terrestrial networks.

[0191] See also Figure 5 Taking the Single Entry PHR MAC CE as an example, the PH field is increased by 1 bit, which means that the number of PH levels that can be indicated increases to 128, which is double the previous number.

[0192] See also Figure 6 The number of bits in the PH field remains at 6 bits, and the indication step size of the existing PHR is evenly increased. For example, the range of each PH level indication becomes 1 to 4 dB.

[0193] See also Figure 7 The PH1 field remains 6 bits long, but the indicated PH level step size is expanded to 1 to 16dB. The PH2 field is 3 bits long, and the indicated PH level step size is 1 to 2dB. Combined with PH1, the network node can determine which of the 16dB spans the UE's reported PH falls within. For example, if PH1 indicates a PH range of 1≤PH≤16dB, and PH2 indicates 001, the actual PH range is 3≤PH≤4dB.

[0194] See also Figure 8 The present invention provides a power control method for a non-terrestrial network, which is performed by a network node of the non-terrestrial network and includes:

[0195] Step 801: receiving a power headroom report sent by a terminal when a trigger condition is met;

[0196] The trigger conditions include one or more of the following:

[0197] (1) The terminal receives first indication information sent by the network node of the non-terrestrial network;

[0198] (2) reaching a power headroom report threshold of the non-terrestrial network;

[0199] (3) The type of the non-terrestrial network changes;

[0200] (4) The terminal switches between the non-terrestrial network and the terrestrial network.

[0201] In an embodiment of the present application, the first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed; or, the first indication information is used to indicate a mapping relationship between a pattern reported in a power headroom report and a change in a cell or beam of the network node of the non-terrestrial network.

[0202] In an embodiment of the present application, the method further includes:

[0203] Second indication information is sent to the terminal, where the second indication information instructs the terminal to adjust uplink transmit power.

[0204] In this embodiment of the present application, the second indication information is a TPC command, and the TPC command is determined by the network node of the non-terrestrial network according to the characteristics of the non-terrestrial network;

[0205] or,

[0206] The second indication information is one or more parameter factors, where the parameter factors are related to characteristics of the non-terrestrial network. The parameter factors and the TPC command instruct the terminal to adjust uplink transmit power.

[0207] In an embodiment of the present application, the format of the MAC CE of the power headroom report includes a first field, and the first field indicates that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network.

[0208] In this embodiment of the present application, the first field is a PH field, and the number of bits of the PH field is greater than a first preset value;

[0209] or,

[0210] The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

[0211] In an embodiment of the present application, the MAC CE also includes a second field, and the first field and the second field are used to indicate that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network, the first field indicates the power headroom level of a first granularity step, and the second field indicates the power headroom level of a second granularity step.

[0212] In this embodiment of the present application, the network node includes at least one of the following:

[0213] (a) Space communication node;

[0214] (b) ground network nodes;

[0215] wherein the space communication node and the ground network node communicate via a first interface;

[0216] The space communication node includes at least one of the following protocol layers or functions:

[0217] (1) Radio frequency unit;

[0218] (2) Physical layer;

[0219] (3) MAC layer;

[0220] (4) RLC layer;

[0221] (5) PDCP layer;

[0222] (6) SDAP layer;

[0223] (7) Xn AP layer;

[0224] (8) Gn AP layer;

[0225] (9) GTP-U layer;

[0226] (10)IP layer;

[0227] (11)F1AP layer.

[0228] In the embodiments of the present application, PHR reporting trigger conditions are added to address the characteristics of non-terrestrial networks. A new PHR reporting configuration is designed that expands the range of PH levels compared to the current PHR configuration, making the PHR reporting mechanism more suitable for non-terrestrial networks.

[0229] See also Figure 9 , an embodiment of the present application provides a power control device for a non-terrestrial network, the device 900 including:

[0230] A first sending module 901 is configured to send a power headroom report to a network node of a non-terrestrial network when a trigger condition is met;

[0231] The trigger conditions include one or more of the following:

[0232] (1) receiving first indication information sent by a network node of the non-terrestrial network;

[0233] (2) reaching a power headroom report threshold of the non-terrestrial network;

[0234] (3) The type of the non-terrestrial network changes;

[0235] (4) The terminal switches between the non-terrestrial network and the terrestrial network.

[0236] In the embodiment of the present application, the first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed;

[0237] or,

[0238] The first indication information is used to indicate a mapping relationship between a pattern reported by a power headroom report and a change in a cell or beam of a network node of the non-terrestrial network.

[0239] In an embodiment of the present application, the first indication information instructs the terminal to obtain ephemeris information;

[0240] The first sending module 901 is further configured to send a power headroom report to a network node of the non-terrestrial network according to the ephemeris information.

[0241] In an embodiment of the present application, the first sending module 901 is further configured to send a power headroom report to a network node of the non-terrestrial network based on the ephemeris information and the trajectory information of the terminal.

[0242] In the embodiment of the present application, the apparatus 900 further includes:

[0243] A first receiving module, configured to receive second indication information sent by a network node of the non-terrestrial network;

[0244] An adjustment module is used to adjust the uplink transmission power of the terminal according to the second indication information.

[0245] In an embodiment of the present application, the second indication information is a TPC command, and the adjustment module is further used to: adjust the uplink transmission power of the terminal according to the TPC command, and the TPC command is determined by the network node of the non-terrestrial network according to the characteristics of the non-terrestrial network.

[0246] In an embodiment of the present application, the adjustment module is further used to: determine a corresponding target parameter factor from the one or more parameter factors according to the characteristics of the non-terrestrial network; and adjust the uplink transmission power of the terminal according to the target parameter factor and the TPC command.

[0247] In an embodiment of the present application, the format of the MAC CE of the power headroom report includes a first field, and the first field indicates that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network.

[0248] In this embodiment of the present application, the first field is a PH field, and the number of bits of the PH field is greater than a first preset value;

[0249] or,

[0250] The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

[0251] In an embodiment of the present application, the MAC CE also includes a second field, and the first field and the second field are used to indicate that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network, the first field indicates the power headroom level of a first granularity step, and the second field indicates the power headroom level of a second granularity step.

[0252] In this embodiment of the present application, the network node includes at least one of the following:

[0253] (a) Space communication node;

[0254] (b) ground network nodes;

[0255] wherein the space communication node and the ground network node communicate via a first interface;

[0256] The space communication node includes at least one of the following protocol layers or functions:

[0257] (1) Radio frequency unit;

[0258] (2) Physical layer;

[0259] (3) MAC layer;

[0260] (4) RLC layer;

[0261] (5) PDCP layer;

[0262] (6) SDAP layer;

[0263] (7) Xn AP layer;

[0264] (8) Gn AP layer;

[0265] (9) GTP-U layer;

[0266] (10)IP layer;

[0267] (11)F1AP layer.

[0268] The device provided in the embodiment of the present application can achieve Figure 4 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0269] See also Figure 10 The embodiment of the present application provides a power control device for a non-terrestrial network. The device 1000 includes:

[0270] The second receiving module 1001 is configured to receive a power headroom report sent by a terminal when a trigger condition is met;

[0271] The trigger conditions include one or more of the following:

[0272] (1) receiving first indication information sent by a network node of the non-terrestrial network;

[0273] (2) reaching a power headroom report threshold of the non-terrestrial network;

[0274] (3) The type of the non-terrestrial network changes;

[0275] (4) The terminal switches between the non-terrestrial network and the terrestrial network.

[0276] In an embodiment of the present application, the first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed; or, the first indication information is used to indicate a mapping relationship between a pattern reported in a power headroom report and a change in a cell or beam of the network node of the non-terrestrial network.

[0277] In the embodiment of the present application, the apparatus 1000 further includes:

[0278] The second sending module is configured to send second indication information to the terminal, where the second indication information instructs the terminal to adjust uplink transmit power.

[0279] In this embodiment of the present application, the second indication information is a TPC command, and the TPC command is determined by the network node of the non-terrestrial network according to the characteristics of the non-terrestrial network;

[0280] or,

[0281] The second indication information is one or more parameter factors, where the parameter factors are related to characteristics of the non-terrestrial network. The parameter factors and the TPC command instruct the terminal to adjust uplink transmit power.

[0282] In an embodiment of the present application, the format of the MAC CE of the power headroom report includes a first field, and the first field indicates that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network.

[0283] In this embodiment of the present application, the first field is a PH field, and the number of bits of the PH field is greater than a first preset value;

[0284] or,

[0285] The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

[0286] In an embodiment of the present application, the MAC CE also includes a second field, and the first field and the second field are used to indicate that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network, the first field indicates the power headroom level of a first granularity step, and the second field indicates the power headroom level of a second granularity step.

[0287] In this embodiment of the present application, the network node includes at least one of the following:

[0288] (a) Space communication node;

[0289] (b) ground network nodes;

[0290] wherein the space communication node and the ground network node communicate via a first interface;

[0291] The space communication node includes at least one of the following protocol layers or functions:

[0292] (1) Radio frequency unit;

[0293] (2) Physical layer;

[0294] (3) MAC layer;

[0295] (4) RLC layer;

[0296] (5) PDCP layer;

[0297] (6) SDAP layer;

[0298] (7) Xn AP layer;

[0299] (8) Gn AP layer;

[0300] (9) GTP-U layer;

[0301] (10)IP layer;

[0302] (11)F1AP layer.

[0303] The device provided in the embodiment of the present application can achieve Figure 8 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0304] Figure 11 To implement a hardware structure diagram of a terminal in an embodiment of the present application, the terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110 and other components.

[0305] Those skilled in the art will understand that the terminal 1100 may also include a power supply (such as a battery) to power each component, and the power supply may be logically connected to the processor 1110 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 11 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0306] It should be understood that in an embodiment of the present application, the input unit 1104 may include a graphics processing unit (GPU) 11041 and a microphone 11042, and the graphics processor 11041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1107 includes a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include two parts: a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0307] In this embodiment of the present application, RF unit 1101 receives downlink data from a network-side device and transmits it to processor 1110 for processing. Furthermore, RF unit 1101 transmits uplink data to the network-side device. Typically, RF unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0308] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, at least one application program or instruction required for a function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1109 may include a high-speed random access memory and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0309] Processor 1110 may include one or more processing units. Optionally, processor 1110 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs or instructions, while the modem processor primarily processes wireless communications, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1110.

[0310] The terminal provided in the embodiment of the present application can achieve Figure 4 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0311] The embodiment of the present application also provides a network side device. Figure 12 As shown, network-side device 1200 includes an antenna 1201, a radio frequency device 1202, and a baseband device 1203. Antenna 1201 is connected to radio frequency device 1202. In the uplink direction, radio frequency device 1202 receives information via antenna 1201 and sends the received information to baseband device 1203 for processing. In the downlink direction, baseband device 1203 processes the information to be transmitted and sends it to radio frequency device 1202. Radio frequency device 1202 processes the received information and then sends it through antenna 1201.

[0312] The frequency band processing device may be located in the baseband device 1203 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 1203 . The baseband device 1203 includes a processor 1204 and a memory 1205 .

[0313] The baseband device 1203 may include, for example, at least one baseband board on which a plurality of chips are arranged, such as Figure 12 As shown, one of the chips is, for example, a processor 1204, which is connected to a memory 1205 to call a program in the memory 1205 and execute the network device operations shown in the above method embodiment.

[0314] The baseband device 1203 may further include a network interface 1206 for exchanging information with the radio frequency device 1202 . The interface may be, for example, a common public radio interface (CPRI).

[0315] Specifically, the network side device of the embodiment of the present invention further includes: instructions or programs stored in the memory 1205 and executable on the processor 1204, and the processor 1204 calls the instructions or programs in the memory 1205 to execute Figure 10 The methods executed by the modules shown achieve the same technical effects, so they will not be described here to avoid repetition.

[0316] The network side device provided in the embodiment of the present application can achieve Figure 8 The various processes implemented in the method embodiment shown achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0317] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored, and when the program or instruction is executed by the processor, the above Figure 4 or Figure 8 The various processes of the method embodiment shown can achieve the same technical effect, and to avoid repetition, they will not be described here.

[0318] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.

[0319] The steps of the method or algorithm described in conjunction with the contents disclosed in this application can be implemented in hardware or by executing software instructions on a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, mobile hard disk, read-only optical disk or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be carried in an ASIC. In addition, the ASIC can be carried in a core network interface device. Of course, the processor and the storage medium can also exist in the core network interface device as discrete components.

[0320] Those skilled in the art will appreciate that, in one or more of the examples above, the functions described herein may be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0321] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of this application. It should be understood that the above description is only the specific implementation methods of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of this application should be included in the scope of protection of this application.

[0322] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the embodiments of the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0323] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0324] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0325] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0326] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations.

Claims

1. A power control method for a non-terrestrial network, characterized in that: Executed by the terminal, including: When a trigger condition is met, sending a power headroom report to a network node of the non-terrestrial network; The triggering condition is satisfied, including: receiving first indication information sent by the network node of the non-terrestrial network; The first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed; or, The first indication information is used to indicate a mapping relationship between a pattern reported by a power headroom report and a change in a cell or beam of a network node of the non-terrestrial network.

2. The method according to claim 1, characterized in that The triggering conditions may include one or more of the following: reaching a power headroom report threshold of the non-terrestrial network; The type of the non-terrestrial network changes; The terminal performs handover between the non-terrestrial network and the terrestrial network.

3. The method according to claim 1, characterized in that The first instruction information instructs the terminal to obtain ephemeris information; The sending of the power headroom report to the network node of the non-terrestrial network includes: A power headroom report is sent to a network node of the non-terrestrial network according to the ephemeris information.

4. The method according to claim 3, characterized in that Sending a power headroom report to a network node of the non-terrestrial network according to the ephemeris information includes: A power headroom report is sent to a network node of the non-terrestrial network according to the ephemeris information and the trajectory information of the terminal.

5. The method according to claim 1, wherein The method further comprises: receiving second indication information sent by the network node of the non-terrestrial network; Adjust the uplink transmit power of the terminal according to the second indication information.

6. The method according to claim 5, characterized in that The second indication information is a transmission power control TPC command, and adjusting the uplink transmit power of the terminal according to the second indication information includes: The uplink transmission power of the terminal is adjusted according to the TPC command, where the TPC command is determined by a network node of the non-terrestrial network according to characteristics of the non-terrestrial network.

7. The method according to claim 5, characterized in that The second indication information is one or more parameter factors, and adjusting the uplink transmit power of the terminal according to the second indication information includes: determining a corresponding target parameter factor from the one or more parameter factors according to characteristics of the non-terrestrial network; The uplink transmit power of the terminal is adjusted according to the target parameter factor and the TPC command.

8. The method according to claim 1, characterized in that The format of the medium access control element MAC CE of the power headroom report includes a first field, where the first field indicates that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network.

9. The method according to claim 8, characterized in that The first field is a power headroom (PH) field, and the number of bits of the PH field is greater than a first preset value; or, The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

10. The method according to claim 8, characterized in that The MAC CE also includes a second field, wherein the first field and the second field are used to indicate that the power headroom report is sent by the terminal to the network node of the non-terrestrial network, the first field indicates the power headroom level of the step size of the first granularity, and the second field indicates the power headroom level of the step size of the second granularity.

11. The method according to claim 1, wherein The network node includes at least one of the following: Space communication nodes; Ground network nodes; wherein the space communication node and the ground network node communicate via a first interface; The space communication node includes at least one of the following protocol layers or functions: Radio frequency unit; Physical layer; MAC layer; RLC layer; PDCP layer; SDAP layer; Xn application protocol layer; Gn application protocol layer; GTP-U layer; IP layer; F1 application protocol layer.

12. A power control method for a non-terrestrial network, characterized in that: Executed by network nodes in non-terrestrial networks, including: receiving a power headroom report sent by a terminal when a trigger condition is met; The triggering condition is satisfied, including: receiving first indication information sent by the network node of the non-terrestrial network; The first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed; or, The first indication information is used to indicate a mapping relationship between a pattern reported by a power headroom report and a change in a cell or beam of a network node of the non-terrestrial network.

13. The method according to claim 12, characterized in that The triggering conditions may include one or more of the following: reaching a power headroom report threshold of the non-terrestrial network; The type of the non-terrestrial network changes; The terminal performs handover between the non-terrestrial network and the terrestrial network.

14. The method according to claim 12, characterized in that The method further comprises: Second indication information is sent to the terminal, where the second indication information instructs the terminal to adjust uplink transmit power.

15. The method according to claim 14, characterized in that The second indication information is a TPC command, where the TPC command is determined by the network node of the non-terrestrial network according to characteristics of the non-terrestrial network; or, The second indication information is one or more parameter factors, where the parameter factors are related to characteristics of the non-terrestrial network. The parameter factors and the TPC command instruct the terminal to adjust uplink transmit power.

16. The method according to claim 12, characterized in that The format of the MAC CE of the power headroom report includes a first field, where the first field indicates that it is a power headroom report sent by the terminal to a network node of a non-terrestrial network.

17. The method according to claim 16, characterized in that The first field is a PH field, and the number of bits of the PH field is greater than a first preset value; or, The first field is a PH field, the number of bits of the PH field is a second preset value, and the step size indicated by the PH field is greater than a third preset value.

18. The method according to claim 16, characterized in that The MAC CE also includes a second field, wherein the first field and the second field are used to indicate that the power headroom report is sent by the terminal to the network node of the non-terrestrial network, the first field indicates the power headroom level of the step size of the first granularity, and the second field indicates the power headroom level of the step size of the second granularity.

19. The method according to claim 12, wherein: The network node includes at least one of the following: Space communication nodes; Ground network nodes; Wherein, the space communication node and the ground network node communicate via a first interface; The space communication node includes at least one of the following protocol layers or functions: Radio frequency unit; Physical layer; MAC layer; RLC layer; PDCP layer; SDAP layer; Xn application protocol layer; Gn application protocol layer; GTP-U layer; IP layer; F1 application protocol layer.

20. A power control device for a non-terrestrial network, characterized in that: include: A first sending module, configured to send a power headroom report to a network node of a non-terrestrial network when a trigger condition is met; The triggering condition is satisfied, including: receiving first indication information sent by the network node of the non-terrestrial network; The first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed; or, The first indication information is used to indicate a mapping relationship between a pattern reported by a power headroom report and a change in a cell or beam of a network node of the non-terrestrial network.

21. A power control device for a non-terrestrial network, characterized in that: include: A second receiving module is configured to receive a power headroom report sent by the terminal when a trigger condition is met; The triggering condition is satisfied, including: receiving first indication information sent by the network node of the non-terrestrial network; The first indication information is sent by the network node of the non-terrestrial network when a virtual cell is added or changed; or, The first indication information is used to indicate a mapping relationship between a pattern reported by a power headroom report and a change in a cell or beam of a network node of the non-terrestrial network.

22. A terminal, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method according to any one of claims 1 to 11.

23. A network side device, characterized in that: include: A processor, a memory, and a program stored in the memory and operable on the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 12 to 19 are implemented.

24. A readable storage medium, characterized in that The readable storage medium stores a program, and when the program is executed by a processor, the steps of the method according to any one of claims 1 to 19 are implemented.

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