CN115134750A

CN115134750A - Power control method, device and equipment for non-ground network and readable storage medium

Info

Publication number: CN115134750A
Application number: CN202110312549.4A
Authority: CN
Inventors: 刘玉真; 柴丽
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-09-30
Also published as: WO2022199534A1

Abstract

The embodiment of the application provides a power control method, a device, equipment and a readable storage medium, wherein the method comprises the following steps: when the triggering condition is met, sending a power headroom report to a network node of the non-ground network; wherein the trigger condition being met comprises one or more of: receiving first indication information sent by a network node of the non-ground network; reaching a reporting threshold of the power headroom report of the non-ground network; the type of the non-terrestrial network changes; the terminal is handed over between the non-terrestrial network and the terrestrial network. In the embodiment of the application, the PHR reporting trigger condition is added according to the characteristics of the non-ground network, so that the PHR reporting mechanism can be better suitable for the non-ground network.

Description

Power control method, device and equipment for non-ground network and readable storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a power control method, a device, equipment and a readable storage medium for a non-ground network.

Background

The Power Headroom Reporting (PHR) is used to report the difference between the estimated uplink transmission Power and the maximum uplink transmission Power of the terminal to the base station, and the base station can perform corresponding Power control and scheduling after obtaining the information.

In the prior art, a PHR trigger condition is that a periodic Timer (periodicPHR-Timer) is overtime, or when a terminal has an uplink resource for transmitting new data, a prohibitPHR-Timer is overtime or has been overtime, and after a last transmission power headroom report, a change value of a path loss exceeds a downlink path loss change (dl-pathlength change) dB.

At present, PHR configuration is mainly applicable to a ground network and cannot be applied to a satellite network. Moreover, the PH range (-32. +38dB) that can be indicated by the existing PHR is small, and in a Non-terrestrial Network (NTN) (such as a satellite Network), since the communication distance is long, the transmission power of a terminal needs to be higher, and how to configure the PHR in the Non-terrestrial Network is an urgent problem to be solved.

Disclosure of Invention

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

In a first aspect, a method for controlling power of a non-terrestrial network is provided, where the method is performed by a terminal and includes:

when the triggering condition is met, sending a power headroom report to a network node of the non-ground network;

wherein the trigger condition being met comprises one or more of:

receiving first indication information sent by a network node of the non-ground network;

the reporting threshold of the power headroom report of the non-ground network is reached;

the type of the non-terrestrial network changes;

the terminal is handed over between the non-terrestrial network and the terrestrial network.

Optionally, the first indication information is sent by a network node of the non-terrestrial network when a virtual cell is added or changed; or the first indication information is used for indicating a mapping relation between a pattern reported by a power headroom report and a change condition of a cell or a beam of a network node of the non-ground network.

Optionally, the first indication information indicates that the terminal acquires ephemeris information;

the sending of the power headroom report to the network node of the non-terrestrial network comprises:

and sending a power headroom report to a network node of the non-ground network according to the ephemeris information.

Optionally, sending a power headroom report to a network node of the non-ground network according to the ephemeris information includes:

and sending a power headroom report to a network node of the non-ground network according to the ephemeris information and the track information of the terminal.

Optionally, the method further comprises:

receiving second indication information sent by a network node of the non-ground network;

and adjusting the uplink transmitting power of the terminal according to the second indication information.

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

and adjusting the uplink transmitting power of the terminal according to the TPC command, wherein the TPC command is determined by the network node of the non-ground network according to the characteristics of the non-ground network.

Optionally, the 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;

and adjusting the uplink transmitting power of the terminal according to the target parameter factor and the TPC command.

Optionally, the format of the MAC CE of the power headroom report includes a first field indicating that the power headroom report is transmitted by the terminal to a network node of the non-terrestrial network.

Optionally, the first field is a PH field, and the bit number of the PH field is greater than a first preset value;

or,

the first field is a PH field, the bit number of the PH field is a second preset value, and the step length indicated by the PH field is larger than a third preset value.

Optionally, the MAC CE further includes a second field, where the first field and the second field are used for indicating a power headroom report that is sent by the terminal to a network node of the non-terrestrial network, the first field indicates a power headroom level of a step size of the first granularity, and the second field indicates a power headroom level of a step size of the second granularity.

Optionally, the network node comprises at least one of:

a spatial communication node;

a ground network node;

the space communication node and the ground network node communicate through a first interface;

the spatial communication node comprises at least one of the following protocol layers or functions:

a radio frequency unit;

a physical layer;

a MAC layer;

an RLC layer;

a PDCP layer;

an SDAP layer;

an Xn application protocol layer;

a Gn application protocol layer;

a GTP-U layer;

an IP layer;

f1 application protocol layer.

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, and includes:

receiving a power headroom report sent by a terminal when the terminal meets a trigger condition;

wherein the trigger condition being met comprises one or more of:

reaching a reporting threshold of the power headroom report of the non-ground network;

the type of the non-terrestrial network changes;

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

or,

the first indication information is used for indicating a mapping relation between a pattern reported by a power headroom report and a change condition of a cell or a beam of a network node of the non-ground network.

Optionally, the method further comprises:

and sending second indication information to the terminal, wherein the second indication information indicates the terminal to adjust the uplink transmitting power.

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 the characteristic of the non-terrestrial network;

or,

the second indication information is one or more parameter factors, the parameter factors are related to the characteristics of the non-ground network, and the parameter factors and the TPC command indicate the terminal to adjust the uplink transmission power.

Optionally, the format of the MAC CE of the power headroom report includes a first field indicating that the MAC CE is a power headroom report transmitted by the terminal to a network node of the non-terrestrial network.

Optionally, the first field is a PH field, and a bit number of the PH field is greater than a first preset value;

or,

Optionally, the network node comprises at least one of:

a spatial communication node;

a ground network node;

a radio frequency unit;

a physical layer;

a MAC layer;

an RLC layer;

a PDCP layer;

an SDAP layer;

an Xn application protocol layer;

a Gn application protocol layer;

a GTP-U layer;

an IP layer;

f1 application protocol layer.

In a third aspect, a power control apparatus for a non-terrestrial network is provided, including:

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;

wherein the trigger condition being met comprises one or more of:

the type of the non-terrestrial network changes;

In a fourth aspect, a power control apparatus for a non-terrestrial network is provided, including:

a second receiving module, configured to receive a power headroom report sent when the terminal meets the trigger condition;

wherein the meeting of the trigger condition comprises one or more of:

the type of the non-terrestrial network changes;

the terminal is switched between a non-terrestrial network and a terrestrial network.

In a fifth aspect, a terminal is provided, including: a processor, a memory and a program stored on the memory and executable on the processor, which program, when executed by the processor, carries out the steps of the method according to the first aspect.

In a sixth aspect, a network-side device is provided, including: a processor, a memory and a program stored on the memory and executable on the processor, which program, when executed by the processor, carries out the steps of the method according to the second aspect.

In a seventh aspect, a readable storage medium is provided, on which a program is stored, which when executed by a processor implements steps comprising the method of the first or second aspect.

In the embodiment of the application, the PHR reporting trigger condition is added according to the characteristics of the non-ground network, so that the PHR reporting mechanism can be better suitable for the non-ground network.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic diagram of a single-entry PHR MAC CE;

fig. 2 is a schematic diagram of a ServCellIndex highest multi-entry PHR MAC CE of a serving cell with configured uplink being less than 8;

fig. 3 is a diagram illustrating a multiple access PHR MAC CE equal to or greater than 8 for the highest ServCellIndex of a serving cell configuring an uplink;

fig. 4 is one of schematic diagrams of a power control method of a non-terrestrial network in an embodiment of the present application;

FIG. 5 is a diagram of a Single Entry PHR MAC CE in the embodiment of the present application;

FIG. 6 is a second schematic diagram of a Single Entry PHR MAC CE in the embodiment of the present application;

FIG. 7 is a third schematic diagram of a Single Entry PHR MAC CE in the embodiment of the present application;

fig. 8 is a second schematic diagram of a power control method of a non-terrestrial network in an embodiment of the present application;

fig. 9 is a schematic diagram of a power control apparatus of a non-terrestrial network in an embodiment of the present application;

fig. 10 is a second schematic diagram of a power control apparatus of a non-terrestrial network in an embodiment of the present application;

fig. 11 is a schematic diagram of a terminal in an embodiment of the present application;

fig. 12 is a schematic diagram of a network-side device in an embodiment of the present application.

Detailed Description

In power headroom reporting, the types of PHR may be divided into 3 types:

type 1(type 1): PHR of Physical Uplink Shared Channel (PUSCH);

type 2(type 2): PHR in the case where PUSCH and a Physical Uplink Control Channel (PUCCH) are transmitted in parallel on the same carrier;

type 3(type 3): the PHR of a Sounding Reference Signal (SRS).

The PHR media access control unit (MAC CE) includes a Single Entry (Single Entry) PHR MAC CE and a Multiple Entry (Multiple Entry) PHR MAC CE, which are respectively shown in fig. 1, fig. 2, and fig. 3.

Wherein, P _CMAX,f,c : if this field is present, it is used to indicate P _CMAX,f,c To calculate the PH domain value.

P: for indicating that the MAC entity applies power backoff.

R: reserved bit, set to "0".

V: for indicating that the PH is based on the actual transmission or a reference format. For Type 1PH, V ═ 0 denotes real transmission on a Physical Uplink Shared Channel (PUSCH), and V ═ 1 denotes the use of a PUSCH reference format. For Type2 PH, V ═ 0 indicates Physical Uplink Control Channel (PUCCH) real transmission, and V ═ 1 indicates that the PUCCH reference format is used. For Type3 PH, V ═ 0 indicates SRS real transmission, and V ═ 1 indicates a channel Sounding Reference Signal (SRS) Reference format. That is, for the three formats described above, V ═ 0 indicates the associated P _CMAX,f,c Field, V ═ 1 will not contain P _CMAX,f,c 。

Table 1: power Headroom levels (PHR) of PHR.

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

Table 2: nominal terminal transmit power level (Nominal UE transmit power level for PHR) of the PHR.

P _CMAX,f,c	Nominal terminal transmit power level
		0	P _{CMAX_C_00}
1	P _{CMAX_C_01}
		2	P _{CMAX_C_02}
…	…
		61	P _{CMAX_C_61}
62	P _{CMAX_C_62}
		63	P _{CMAX_C_63}

Power headroom reporting range (P) and P _CMAX,c,f The reported ranges are shown in tables 3 and 4, respectively.

Table 3: power headroom report mapping (Power headroom report mapping).

Reporting the value	Measured quantity 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

Table 4: p _CMAX,c.f To (3) is performed.

Reporting the value	Measured quantity value	Unit of
			P _{CMAX_C_00}	P _CMAX,c,f <-29	dBm
P _{CMAX_C_01}	-29≤P _CMAX,c,f <-28	dBm
			PCMAX_C_02	-28≤P _CMAX,c,f <-27	dBm
…	…	…
			PCMAX_C_61	31≤P _CMAX,c,f <32	dBm
PCMAX_C_62	32≤P _CMAX,c,f <33	dBm
			PCMAX_C_63	33≤P _CMAX,c,f	dBm

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, e.g., a and/or B, means that three conditions exist including a alone, B alone, and both a and B.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-a) systems, but may 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" are often used interchangeably in embodiments of the present application, and the described techniques may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

Referring to fig. 4, an embodiment of the present application provides a power control method for a non-terrestrial network, which is executed by a terminal, and includes the specific steps of: step 401.

Step 401: when the triggering condition is met, sending a power headroom report to a network node of the non-ground network;

wherein the trigger condition being met comprises one or more of:

(1) receiving first indication information sent by a network node of the non-ground network;

it is to be understood that the network node of the non-terrestrial network may send the first indication information in a explicit or implicit manner.

Embodiment 1: the first indication information is sent by a network node of the non-terrestrial network when a virtual cell is added or changed. Illustratively, PHR reporting is indicated in a system message, or a requirement PHR reporting is included in a virtual cell indication.

The explanation about the virtual cell is as follows: the virtual cell 1 belongs to country 1, the virtual cell 2 belongs to country 2, and the virtual cell 1 and the virtual cell 2 belong to the same physical cell 1; according to the regulations, the transmission power of the terminal of country 1 cannot transmit too much power on the ground of country 2; when the terminal finds that the boundary from the virtual cell 2 is larger than a certain threshold value according to the range of the virtual cell 1 and the virtual cell 2 defined by the network, triggering a PHR and carrying a reason; after receiving the report, the network node performs uplink power control, and changes settings of a Modulation and Coding Scheme (MCS), a Transport Block (TB), and the like of related data scheduling on the terminal according to the information reported by the PHR and the recorded regulatory restrictions.

Embodiment 2: the first indication information is used for indicating a mapping relation between a pattern (pattern) reported by a power headroom report and a change condition of a cell or a beam of a network node of the non-ground network.

Exemplarily, the terminal does not move at a certain position, the satellite at the position is satellite a coverage at T0, T1 becomes satellite B coverage, T2 becomes satellite C coverage, …, the network node sends a pattern of T0, T1, T2 … to the terminal according to the change of the cell or beam, and then the UE triggers reporting of the PHR according to the pattern.

Embodiment 3: and the first indication information indicates the terminal to acquire ephemeris information, and the terminal sends a power headroom report to a network node of the non-ground network according to the ephemeris information. Further, a power headroom report is sent to a network node of the non-ground network according to the ephemeris information and the track information of the terminal.

The network node sends an indication message to the terminal, and then the terminal triggers the report of the PHR according to the acquired ephemeris information and (optional) track information of the terminal.

(2) Reaching a reporting threshold of the power headroom report of the non-ground network;

in the embodiment of the present application, a PHR reporting threshold with a terminal as a granularity in the prior art is changed to a PHR reporting threshold with a network type as a granularity, that is, a PHR reporting threshold is defined for each network type, and the PHR reporting threshold corresponding to different networks can be configured to the terminal through Radio Resource Control (RRC), so that the terminal can select adaptively.

The network types may include: a ground network, a Geostationary Orbit (GEO) satellite network, a Medium Earth Orbit (MEO) satellite network, a Low Earth Orbit (LEO) satellite network, an unmanned aerial vehicle network, etc., it can be understood that different uplink transmission power requirements caused by the PHR reporting threshold and the heights of different network nodes are related;

(3) the type of the non-terrestrial network changes;

for example, LEO becomes GEO, or GEO becomes LEO.

(4) The terminal is switched between a non-terrestrial network and a terrestrial network.

It will be appreciated that the network node of the non-terrestrial network may be a network node on a satellite or a network node on a drone.

In an embodiment of the present application, the network node includes at least one of:

(a) a spatial communication node;

(b) a ground network node;

wherein the space communication node and the ground network node communicate through a first interface;

(1) a radio frequency unit;

(2) a physical layer;

(3) a Medium Access Control (MAC) layer;

(4) a Radio Link Control (RLC) layer;

(5) a Packet Data Convergence Protocol (PDCP) layer;

(6) a Service Data Attachment Protocol (SDAP) layer;

(7) an Xn Application Protocol (AP) layer;

(8) a Gn application protocol layer;

(9) a General packet radio service Tunnel Protocol User plane (GTP-U) layer;

(10) an Internet Protocol (IP) layer;

(11) f1 application protocol layer.

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

Optionally, the second indication information is a Transmit Power Control (TPC) command, and the adjusting uplink Transmit power of the terminal according to the second indication information includes: and adjusting the uplink transmitting power of the terminal according to the TPC command, wherein the TPC command is determined by the network node of the non-ground network according to the characteristics of the non-ground network.

That is, in the embodiment of the present application, the TPC command for uplink power control of PUCCH or PUSCH for correcting terminal transmission power may be redefined according to the characteristics of the non-terrestrial network, and is associated with different uplink transmission power requirements caused by the height of network nodes of different non-terrestrial networks:

(1)0：-m db；

(2)1：0db；

(3)2：m db；

(4)3：m+n db。

for example, the height of the network node of the non-terrestrial network is 0 th level height, the uplink transmission power is-m db, the height of the network node of the non-terrestrial network is 1 st level height, the uplink transmission power is 0db, the height of the network node of the non-terrestrial network is 2 nd level height, the uplink transmission power is m db, the height of the network node of the non-terrestrial network is 3 rd level height, and the uplink transmission power is m + n db.

Optionally, the second indication information is one or more parameter factors (or referred to as weights), and the 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 based on a characteristic of the non-terrestrial network (such as an altitude of a network node of the non-terrestrial network); and adjusting the uplink transmitting power of the terminal according to the target parameter factor and the TPC command.

That is, in the embodiment of the present application, the table of the values of the accumulated value mode of the PUSCH/PUCCH commanded by the TPC command is not changed, the network node of the non-terrestrial network sends one or more parameter factors corresponding to the heights of different network nodes to the terminal, and the terminal selects and uses the parameter factors according to the heights of the network nodes of the non-terrestrial network.

In the embodiment of the application, a new PHR media access control unit (MAC CE) of the non-ground network is designed, wherein the power margin value and the maximum transmission power of the terminal are assigned according to the value range defined in a new table;

in an embodiment of the present application, the format of the MAC CE of the power headroom report includes a first field, where the first field indicates that the MAC CE is a power headroom report transmitted by a terminal to a network node of a non-terrestrial network. That is, a new logical channel is designed to indicate the PHR MAC CE of such a new non-terrestrial network, and 3 schemes are designed for the MAC CE as follows:

1) the first field is a Power Headroom (PH) field, and the bit number of the PH field is greater than a first preset value.

Namely, the number of bits of the PH field in the PHR MAC CE is increased, and the step length is kept to be 1-2 db originally.

2) The first field is a PH field, the bit number of the PH field is a second preset value, and the step length indicated by the PH field is larger than a third preset value.

That is, the indication step size of the existing PHR is uniformly increased, the number of bits in the PH field is still kept to be 6 bits, but the granularity becomes coarse, and the step size is increased, that is, a table specially applied to satellite communication is designed in the existing protocol to describe the step size corresponding to each POWER _ HEADROOM _ m (POWER HEADROOM _ m);

3) the MAC CE further includes a second field, the first field and the second field indicating a power headroom report that is sent by the terminal to a network node of the non-terrestrial network, the first field indicating a power headroom level (PH level) for a step size of a first granularity, the second field indicating a power headroom level for a step size of a second granularity, the first granularity (coarse granularity) being coarser than the second granularity (fine granularity).

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 of the step size with the larger coarse granularity, and one field is used to indicate the PH level of the step size with the smaller finer granularity.

In the embodiment of the application, a PHR reporting trigger condition is added according to the characteristics of the non-ground network. Meanwhile, a new PHR reporting configuration is designed, compared with the PHR configuration in the existing protocol, the indication range of PH level is expanded, and the PHR reporting mechanism can be better suitable for a non-ground network.

Referring to fig. 5, a Single Entry PHR MAC CE is taken as an example. Wherein, the PH field is increased by 1bit, that is, the PH level capable of being indicated is changed into 128 types, which is enlarged by 1 time than before.

Referring to fig. 6, the number of bits in the PH field is still kept to be 6 bits, and the indication step size of the existing PHR is uniformly increased, for example, the range of each PH level indication is 1-4 db.

Referring to fig. 7, the number of bits in the PH1 field is still kept at 6 bits, the indicated PH level step is expanded to 1-16 db, the PH2 field is 3 bits, and the indicated PH level step is 1-2 db, so that the network node in combination with the PH1 can know which finer range the PH reported by the UE is specifically within the range with the span of 16 db. For example, PH1 indicates a PH of 1 ≦ PH ≦ 16db, and PH2 indicates 001, it is known that the actual PH is 3 ≦ PH ≦ 4 db.

Referring to fig. 8, an embodiment of the present application provides a power control method for a non-terrestrial network, which is performed by a network node of the non-terrestrial network, and includes:

step 801: receiving a power headroom report sent by a terminal when the terminal meets a trigger condition;

wherein the trigger condition being met comprises one or more of:

(1) the terminal receives first indication information sent by a network node of the non-ground network;

(3) the type of the non-terrestrial network changes;

(4) the terminal is handed over between the non-terrestrial network and the terrestrial network.

In an embodiment of the present application, the first indication information is sent by a network node of the non-terrestrial network when a virtual cell is added or changed; or the first indication information is used for indicating a mapping relation between a pattern reported by a power headroom report and a change condition of a cell or a beam of a network node of the non-ground network.

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

In an embodiment of the present application, the second indication information is a TPC command, and the TPC command is determined by a network node of the non-terrestrial network according to a characteristic of the non-terrestrial network;

or,

the second indication information is one or more parameter factors, the parameter factors are related to the characteristics of the non-ground network, and the parameter factors and the TPC command indicate the terminal to adjust uplink transmission power.

In an embodiment of the present application, the format of the MAC CE of the power headroom report includes a first field, where the first field indicates that the MAC CE is a power headroom report transmitted by a terminal to a network node of a non-terrestrial network.

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

or,

In this embodiment, the MAC CE further includes a second field, where the first field and the second field are used to indicate a power headroom report that is sent by the terminal to a network node of the non-terrestrial network, the first field indicates a power headroom level of a step size of the first granularity, and the second field indicates a power headroom level of a step size of the second granularity.

(a) a spatial communication node;

(b) a ground network node;

(1) a radio frequency unit;

(2) a physical layer;

(3) a MAC layer;

(4) an RLC layer;

(5) a PDCP layer;

(6) an SDAP layer;

(7) an Xn AP layer;

(8) a Gn AP layer;

(9) a GTP-U layer;

(10) an IP layer;

(11) and F1 AP.

Referring to fig. 9, an embodiment of the present application provides a power control apparatus for a non-terrestrial network, where the apparatus 900 includes:

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

wherein the trigger condition being met comprises one or more of:

(3) the type of the non-terrestrial network changes;

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

or,

In an embodiment of the present application, the first indication information indicates that the terminal acquires ephemeris information;

the first sending module 901 is further configured to: and sending a power headroom report to a network node of the non-ground network according to the ephemeris information.

In this embodiment of the present application, the first sending module 901 is further configured to: and sending a power headroom report to a network node of the non-ground network according to the ephemeris information and the track information of the terminal.

In this embodiment, the apparatus 900 further includes:

the first receiving module is used for receiving second indication information sent by the network node of the non-ground network;

and the adjusting module is used for adjusting the uplink transmitting power of the terminal according to the second indication information.

In this embodiment of the application, the second indication information is a TPC command, and the adjusting module is further configured to: and adjusting the uplink transmitting power of the terminal according to the TPC command, wherein the TPC command is determined by the network node of the non-ground network according to the characteristics of the non-ground network.

In an embodiment of the present application, the adjusting module is further configured to: determining a corresponding target parameter factor from the one or more parameter factors according to characteristics of the non-terrestrial network; and adjusting the uplink transmitting power of the terminal according to the target parameter factor and the TPC command.

In an embodiment of the present application, a format of the MAC CE of the power headroom report includes a first field indicating that the power headroom report is transmitted by the terminal to a network node of the non-terrestrial network.

or,

(a) a spatial communication node;

(b) a ground network node;

(1) a radio frequency unit;

(2) a physical layer;

(3) a MAC layer;

(4) an RLC layer;

(5) a PDCP layer;

(6) an SDAP layer;

(7) an Xn AP layer;

(8) a Gn AP layer;

(9) a GTP-U layer;

(10) an IP layer;

(11) a layer of F1 AP.

The device provided in the embodiment of the present application can implement each process implemented in the method embodiment shown in fig. 4, and achieve the same technical effect, and is not described here again to avoid repetition.

Referring to fig. 10, an embodiment of the present application provides a power control apparatus for a non-terrestrial network, where the apparatus 1000 includes:

a second receiving module 1001, configured to receive a power headroom report sent when a terminal meets a trigger condition;

wherein the trigger condition being met comprises one or more of:

(3) the type of the non-terrestrial network changes;

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

and the second sending module is used for sending second indication information to the terminal, wherein the second indication information indicates the terminal to adjust the uplink transmitting power.

or,

(a) a spatial communication node;

(b) a ground network node;

(1) a radio frequency unit;

(2) a physical layer;

(3) a MAC layer;

(4) an RLC layer;

(5) a PDCP layer;

(6) an SDAP layer;

(7) an Xn AP layer;

(8) a Gn AP layer;

(9) a GTP-U layer;

(10) an IP layer;

(11) a layer of F1 AP.

The device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 8, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

Fig. 11 is a schematic hardware structure diagram of a terminal for implementing an embodiment of the present application, where the terminal 1100 includes, but is not limited to: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110.

Those skilled in the art will appreciate that terminal 1100 can also include a power supply (e.g., a battery) for powering the various components, which can be logically coupled to processor 1110 via a power management system to facilitate managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 11 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.

It should be understood that in the 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 image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing 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, or the like. The user input unit 1107 includes a touch panel 11071 and other input devices 11072. A touch panel 11071, also called a touch screen. The touch panel 11071 may include two portions of a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment of the application, the radio frequency unit 1101 receives downlink data from a network side device and then processes the downlink data to the processor 1110; in addition, the uplink data is sent to the network side equipment. In general, radio frequency 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.

The memory 1109 may be used for storing software programs or instructions as well as various data. The memory 1109 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 1109 may include a high-speed random access Memory and may also include a nonvolatile Memory, which may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1110 may include one or more processing units; alternatively, processor 1110 may integrate an application processor that primarily handles operating systems, user interfaces, and applications or instructions, etc. and a modem processor that primarily handles wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1110.

The terminal provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 4, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

The embodiment of the application also provides network side equipment. As shown in fig. 12, the network side device 1200 includes: antenna 1201, radio frequency device 1202, baseband device 1203. Antenna 1201 is connected to radio frequency device 1202. In the uplink direction, the rf device 1202 receives information through the antenna 1201 and sends the received information to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes information to be transmitted and transmits the processed information to the radio frequency device 1202, and the radio frequency device 1202 processes the received information and transmits the processed information through the antenna 1201.

The above band processing means may be located in the baseband apparatus 1203, and the method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 1203, where the baseband apparatus 1203 includes a processor 1204 and a memory 1205.

The baseband apparatus 1203 may include at least one baseband board, for example, on which a plurality of chips are disposed, as shown in fig. 12, where one chip, for example, the processor 1204, is connected to the memory 1205 to call up a program in the memory 1205 to perform the network device operations shown in the above method embodiments.

The baseband apparatus 1203 may further include a network interface 1206 for exchanging information with the radio frequency apparatus 1202, such as a Common Public Radio Interface (CPRI).

Specifically, the network side device according to the embodiment of the present invention further includes: the instructions or programs stored in the memory 1205 and executable on the processor 1204, the processor 1204 invokes the instructions or programs in the memory 1205 to execute the method executed by each module shown in fig. 10, and achieve the same technical effect, which is not described herein for avoiding repetition.

The network side device provided in the embodiment of the present application can implement each process implemented in the method embodiment shown in fig. 8, and achieve the same technical effect, and is not described here again to avoid repetition.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the method embodiment shown in fig. 4 or fig. 8, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

Wherein, 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 Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such 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 also intended to encompass such modifications and variations.

Claims

1. A method for power control of a non-terrestrial network, the method being performed by a terminal and comprising:

wherein the meeting of the trigger condition comprises one or more of:

the type of the non-terrestrial network changes;

2. The method of claim 1,

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

or,

3. The method of claim 1, wherein the first indication information indicates that the terminal acquires ephemeris information;

4. The method of claim 3, wherein sending a power headroom report to a network node of the non-terrestrial network based on the ephemeris information comprises:

5. The method of claim 1, further comprising:

6. The method of claim 5, wherein the second indication information is a TPC command, and wherein the adjusting the uplink transmit power of the terminal according to the second indication information comprises:

7. The method according to claim 5, wherein the second indication information is one or more parameter factors, and the adjusting the uplink transmit power of the terminal according to the second indication information comprises:

8. The method of claim 1, wherein a format of a media access control element (MAC CE) of the power headroom report comprises a first field indicating that the power headroom report is sent by a terminal to a network node of a non-terrestrial network.

9. The method of claim 8, wherein the first field is a Power Headroom (PH) field, and wherein a bit number of the PH field is greater than a first preset value;

or,

10. The method of claim 8, wherein the MAC CE further comprises a second field, and wherein the first field and the second field are used for indicating the power headroom report that is sent by the terminal to the network node of the non-terrestrial network, and wherein the first field indicates the power headroom level for the step size of the first granularity, and wherein the second field indicates the power headroom level for the step size of the second granularity.

11. The method of claim 1, wherein the network node comprises at least one of:

a spatial communication node;

a ground network node;

wherein the spatial communication node and the ground network node communicate via a first interface;

a radio frequency unit;

a physical layer;

a MAC layer;

an RLC layer;

a PDCP layer;

an SDAP layer;

an Xn application protocol layer;

a Gn application protocol layer;

a GTP-U layer;

an IP layer;

f1 application protocol layer.

12. A method of power control for a non-terrestrial network, performed by a network node of the non-terrestrial network, comprising:

wherein the trigger condition being met comprises one or more of:

the type of the non-terrestrial network changes;

13. The method of claim 12,

or,

14. The method of claim 12, further comprising:

15. The method of claim 14, wherein the second indication information is a TPC command, the TPC command being determined by a network node of the non-terrestrial network based on a characteristic of the non-terrestrial network;

or,

16. The method of claim 12, wherein the format of the MAC CE of the power headroom report comprises a first field indicating that the power headroom report is transmitted by the terminal to a network node of the non-terrestrial network.

17. The method of claim 16, wherein the first field is a PH field, and wherein a bit number of the PH field is greater than a first preset value;

or,

18. The method of claim 16, wherein the MAC CE further comprises a second field, and wherein the first field and the second field are used for indicating the power headroom report that is sent by the terminal to the network node of the non-terrestrial network, and wherein the first field indicates a power headroom level for a step size for a first granularity, and wherein the second field indicates a power headroom level for a step size for a second granularity.

19. The method of claim 12, wherein the network node comprises at least one of:

a spatial communication node;

a ground network node;

a radio frequency unit;

a physical layer;

a MAC layer;

an RLC layer;

a PDCP layer;

an SDAP layer;

an Xn application protocol layer;

a Gn application protocol layer;

a GTP-U layer;

an IP layer;

f1 application protocol layer.

20. A power control apparatus for a non-terrestrial network, comprising:

wherein the trigger condition being met comprises one or more of:

the type of the non-terrestrial network changes;

21. A power control apparatus for a non-terrestrial network, comprising:

the second receiving module is used for receiving a power headroom report sent by the terminal when the terminal meets the trigger condition;

wherein the trigger condition being met comprises one or more of:

the type of the non-terrestrial network changes;

22. A terminal, comprising: processor, memory and program stored on the memory and executable on the processor, which 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, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method according to any one of claims 12 to 19.

24. A readable storage medium, characterized in that it has stored thereon a program which, when being executed by a processor, carries out steps comprising the method according to any one of claims 1 to 19.