CN112188602B

CN112188602B - Power control method and communication equipment

Info

Publication number: CN112188602B
Application number: CN201910606116.2A
Authority: CN
Inventors: 柯颋; 徐珉; 杨博涵; 童辉; 王启星; 刘光毅; 夏亮
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: 2019-07-05
Filing date: 2019-07-05
Publication date: 2023-06-27
Anticipated expiration: 2039-07-05
Also published as: CN112188602A

Abstract

The embodiment of the invention provides a power control method and equipment, wherein the method comprises the following steps: determining a first transmit power based on at least one of a distance of the first communication device to the at least one second communication device, a path loss of the first communication device to the at least one second communication device, a height of the first communication device, and a high-level configuration parameter; the transmit power of the first communication device is not greater than the first transmit power. In the embodiment of the invention, the serious intersystem interference of the ATG system to the ground cellular system can be avoided.

Description

Power control method and communication equipment

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a power control method and communication equipment.

Background

Referring to fig. 1a, the Air To Group (ATG) communication technology utilizes a mature land mobile communication technology, such as a fourth generation communication technology (4 ^th generation, 4G), fifth generation communication technology (5 ^th generation, 5G), etc., constructing a private base station capable of covering sky with an antenna on the ground, constructing a space-space three-dimensional coverageAnd the special network effectively solves the problem of high-altitude three-dimensional coverage and realizes ground-air data transmission.

Compared with a ground network, the ATG network needs to support an oversized coverage radius, for example, 100-300 kilometers (km), and for an inland region, the ATG network needs to support the coverage radius of 100km so as to reduce the number of ATG base stations and the network deployment cost; for a bay area, an ATG network needs to support a coverage radius of 300km in order for a land base station to cover the bay overhead.

In the prior art, in order to save spectrum resources, the ATG system and the terrestrial cellular communication system use the same or adjacent operating frequencies, for example: both the ATG system and the terrestrial system use the 4.9GHz frequency point, and serious intersystem interference is generated between the ATG system and the terrestrial cellular system.

Disclosure of Invention

The embodiment of the invention provides a power control method and communication equipment, which solve the problem that serious intersystem interference is generated between an ATG system and a ground cellular system.

According to a first aspect of an embodiment of the present invention, there is provided a power control method applied to a first communication device, the method including:

determining a first transmit power based on at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter;

The transmit power of the first communication device is not greater than the first transmit power.

Optionally, the at least one second communication device has at least one of the following features:

the at least one second communication device does not include a serving cell of the first communication device;

the at least one second communication device is interfered by the first communication device;

there is no communication link between the at least one second communication device and the first communication device.

Optionally, the high-level configuration parameters includeP ₀ 、P′ ₀ And at least one of α;

wherein P is ₀ For the interference level, P ', expected to be received by the at least one second communication device' ₀ For the interference level expected to be experienced by the at least one second communication device on the unit frequency domain resource, α is a higher layer configuration parameter.

Optionally, the transmission power P of the first communication device _UL Not greater than the first transmission power P _MAX The method comprises at least one of the following determination methods:

equation one:

formula II:

wherein, the liquid crystal display device comprises a liquid crystal display device,

and (3) a formula III:

wherein P is _CMAX,f,c (i) Is configured UE transmit power (configured UE transmit power); p (P) _MAX,1 Representing the transmit power determined from the path loss of the first communication device to the serving cell of the first communication device.

Optionally, the transmission power of the first communication device is not greater than the first transmission power, and further includes:

the transmission power of at least one signal and/or channel of the first communication device is not greater than the first transmission power, the at least one signal and/or channel comprising at least:

PUSCH、PUCCH、SRS、PRACH。

optionally, the determining the first transmission power according to at least one of a distance from the first communication device to at least one second communication device, a path loss from the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter includes:

determining the first transmission power P according to at least one of the following formulas _MAX ：

P _MAX ＝P ₀ ；

P _MAX ＝P ₀ +PL；

P _MAX ＝P ₀ +f(d)；

P _MAX ＝P ₀ +α·f(d)；

Where d is the distance of the first communication device from the at least one second communication device, PL represents the path loss of the first communication device to the at least one second communication device, f (d) represents the function of the distance d of the first communication device from the at least one second communication device, P ₀ And α is a high-level configuration parameter.

Determining a second transmit power of the first communication device on the unit frequency domain resource according to at least one of a distance of the first communication device from the at least one second communication device, a path loss of the first communication device to the at least one second communication device, and an interference level expected to be received by the at least one second communication device on the unit frequency domain resource;

and determining the first transmitting power according to the second transmitting power of the first communication equipment on the unit frequency domain resource and the frequency domain resource size of the transmitting signal.

Optionally, the determining the first transmission power according to the second transmission power of the first communication device on a unit frequency domain resource and the frequency domain resource size of the transmission signal includes:

for a second transmit power, N, of the first communication device on a unit frequency domain resource _UnitBW And mu is a subcarrier spacing configuration parameter for the number of unit frequency domain resources contained in the transmission signal.

Optionally, the determining the second transmission power of the first communication device on the unit frequency domain resource according to at least one of a distance between the first communication device and the at least one second communication device, a path loss of the first communication device to the at least one second communication device, and an expected interference level of the at least one second communication device on the unit frequency domain resource includes:

Determining a second transmit power of the first communication device on a unit frequency domain resource according to at least one of the following formulas

Where d is the distance of the first communication device from the at least one second communication device, PL represents the path loss of the first communication device to the at least one second communication device, f (d) represents a function of the distance d of the first communication device from the at least one second communication device, P' ₀ And α is a high-level configuration parameter.

Optionally, the method further comprises:

the distance from the first communication device to the at least one second communication device is determined according to at least one of the height of the first communication device and the distance from the projection point of the first communication device on the ground to the at least one second communication device.

Optionally, the determining the distance from the first communication device to the at least one second communication device according to at least one of the height of the first communication device and the distance from the projection point of the first communication device on the ground to the at least one second communication device includes:

determining the distance d of the first communication device from the at least one second communication device according to at least one of the following formulas:

d＝h ₁ ；

wherein h is ₁ To be the instituteThe height of the first communication device, i, is the distance from the projection point of the first communication device on the ground to the at least one second communication device.

Optionally, the method further comprises:

and determining the path loss from the first communication device to the at least one second communication device and/or the function f (d) according to preset parameters and carrier frequency.

Optionally, the determining the path loss from the first communication device to the at least one second communication device and/or the function f (d) according to preset parameters and carrier frequency includes:

determining a path loss PL of the first communication device to the at least one second communication device according to the following formula:

PL＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

and/or determining said function f (d) according to the following formula

f(d)＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

Wherein a, b and c are preset parameters, f _c Is the carrier frequency.

Alternatively, P ₀ 、P′ ₀ And at least one of α is a pre-agreed or higher layer signaling configuration.

Optionally, the method further comprises:

receiving P from the third communication device via higher layer signaling ₀ 、P′ ₀ And a set of values for at least one of α;

and determining a parameter value from the value set according to DCI, wherein the DCI comprises first indication information which is used for indicating the first communication equipment to determine the parameter value from the value set.

According to a second aspect of an embodiment of the present invention, there is provided a power control method applied to a third communication device, wherein the method includes:

determining P ₀ 、P′ ₀ And at least one of α;

transmitting P to first communication device ₀ 、P′ ₀ And at least one of α;

alternatively, P ₀ For the interference level, P ', expected to be received by the at least one second communication device' ₀ For the interference level expected to be experienced by the at least one second communication device on the unit frequency domain resource, α is a higher layer configuration parameter.

Optionally, the determining P ₀ 、P′ ₀ And alpha, comprising:

determining P according to average or worst detection sensitivity of a ground network in a cell coverage area or average or worst detection sensitivity of a ground network right below the first communication device in a preset time period ₀ 、P′ ₀ And alpha.

Optionally, the sending P to the first communication device ₀ 、P′ ₀ And alpha, comprising:

transmitting P to a first communication device by higher layer signaling ₀ 、P′ ₀ And alpha.

Optionally, the method further comprises:

and sending DCI to the first communication equipment, wherein the DCI comprises first indication information which is used for indicating the first communication equipment to determine a parameter value from the value set.

Optionally, the method further comprises:

and determining the first indication information according to the average or worst detection sensitivity of the ground network in the cell coverage range or the average or worst detection sensitivity of the ground network right below the first communication equipment in a preset time period.

According to a third aspect of embodiments of the present invention, there is provided a first communication device comprising: a first transceiver and a first processor, wherein,

the first processor is configured to determine a first transmit power according to at least one of a distance from the first communication device to at least one second communication device, a path loss from the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter;

Optionally, the high-level configuration parameters include P ₀ 、P′ ₀ And at least one of α;

Optionally, the first processor is configured to determine the first transmission power P according to at least one of the following methods _MAX Comprising:

equation one:

formula II:

and (3) a formula III:

wherein P is _CMAX，f，c (i) Is configured UE transmit power (configured UE transmit power); p (P) _MAX，1 Representing the transmit power determined from the path loss of the first communication device to the serving cell of the first communication device.

PUSCH、PUCCH、SRS、PRACH。

optionally, the first processor is further configured to determine the first transmission power P according to at least one of the following formulas _MAX ：

P _MAX ＝P ₀ ；

P _MAX ＝P ₀ +PL；

P _MAX ＝P ₀ +f(d)；

P _MAX ＝P ₀ +α·f(d)；

Optionally, the first processor is further configured to determine a second transmission power of the first communication device on the unit frequency domain resource according to at least one of a distance between the first communication device and the at least one second communication device, a path loss of the first communication device to the at least one second communication device, and an interference level expected to be received by the at least one second communication device on the unit frequency domain resource;

Optionally, the first processor is further configured to determine a second transmit power of the first communication device on a unit frequency domain resource according to at least one of the following formulas

Optionally, the first processor is further configured to determine a distance from the first communication device to the at least one second communication device according to at least one of a height of the first communication device and a distance from a projection point of the first communication device on the ground to the at least one second communication device.

Optionally, the first processor is further configured to determine the distance d of the first communication device from the at least one second communication device according to at least one of the following formulas:

d＝h ₁ ；

wherein h is ₁ And l is the distance from the projection point of the first communication device on the ground to the at least one second communication device.

Optionally, the first processor is further configured to determine a path loss and/or the function f (d) of the first communication device to the at least one second communication device according to preset parameters and carrier frequency.

Optionally, the first processor is further configured to determine a path loss PL of the first communication device to the at least one second communication device according to the following formula:

PL＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

and/or determining said function f (d) according to the following formula

f(d)＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

Wherein a, b and c are preset parameters, f _c Is the carrier frequency.

Optionally, the first transceiver is configured to receive P from the third communication device by higher layer signaling ₀ 、P′ ₀ And a set of values for at least one of α;

determining a parameter value from the value set according to Downlink Control Information (DCI), wherein the DCI comprises first indication information used for indicating the first communication equipment to determine the parameter value from the value set.

According to a fourth aspect of embodiments of the present invention, there is provided a first communication device comprising:

the first determining module is configured to determine a first transmission power according to at least one of a distance from the first communication device to at least one second communication device, a path loss from the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter;

Optionally, the first determining module is configured to determine the first transmission power P according to at least one of the following methods _MAX Comprising:

equation one:

formula II:

and (3) a formula III:

PUSCH、PUCCH、SRS、PRACH。

Optionally, the first determining module is further configured to determine the first transmission power P according to at least one of the following formulas _MAX ：

P _MAX ＝P ₀ ；

P _MAX ＝P ₀ +PL；

P _MAX ＝P ₀ +f(d)；

P _MAX ＝P ₀ +α·f(d)；

Where d is the distance of the first communication device from the at least one second communication device, PL represents the path loss of the first communication device to the at least one second communication device, P ₀ For the level of interference expected to be experienced by the at least one second communication device, f (d) represents a function of the distance d of the first communication device from the at least one second communication device.

Optionally, the first determining module is further configured to determine a second transmission power of the first communication device on the unit frequency domain resource according to at least one of a distance between the first communication device and the at least one second communication device, a path loss of the first communication device to the at least one second communication device, and an interference level expected to be received by the at least one second communication device on the unit frequency domain resource;

Optionally, the first determining module is further configured to determine a second transmission power of the first communication device on a unit frequency domain resource according to at least one of the following formulas

Where d is the distance of the first communication device from the at least one second communication device, PL represents the path loss of the first communication device to the at least one second communication device, P' ₀ For the level of interference expected by the at least one second communication device on a unit frequency domain resource, f (d) represents the first communication device and the at least one second communication deviceIs a function of the distance d.

Optionally, the first determining module is further configured to determine a distance from the first communication device to the at least one second communication device according to at least one of a height of the first communication device and a distance from a projection point of the first communication device on the ground to the at least one second communication device.

Optionally, the first determining module is further configured to determine a distance d between the first communication device and the at least one second communication device according to at least one of the following formulas:

d＝h ₁ ；

Optionally, the first determining module is further configured to determine a path loss and/or the function f (d) from the first communication device to the at least one second communication device according to preset parameters and carrier frequency.

Optionally, the first determining module is further configured to determine a path loss PL from the first communication device to the at least one second communication device according to the following formula:

PL＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

and/or determining said function f (d) according to the following formula

f(d)＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

Wherein a, b and c are preset parameters, f _c Is the carrier frequency.

Optionally, the first communication device further comprises: a first receiving module for transmitting high-layer informationCausing reception of P from the third communication device ₀ 、P′ ₀ And a set of values for at least one of α;

According to a fifth aspect of an embodiment of the present invention, there is provided a third communication apparatus including: a second transceiver and a second processor, wherein,

the second processor is used for determining P ₀ 、P′ ₀ And at least one of α;

the second transceiver is used for transmitting P to the first communication device ₀ 、P′ ₀ And at least one of α;

Optionally, the second processor is further configured to determine P according to an average or worst detection sensitivity of the terrestrial network within the coverage of the cell, or an average or worst detection sensitivity of the terrestrial network directly below the first communication device within a preset time period ₀ 、P′ ₀ And alpha.

Optionally, the second transceiver is further configured to send P to the first communication device through higher layer signaling ₀ 、P′ ₀ And at least one of α;

the second transceiver is further configured to send DCI to the first communication device, where the DCI includes first indication information, where the first indication information is used to instruct the first communication device to determine a parameter value from the value set.

Optionally, the second processor is further configured to determine the first indication information according to an average or worst detection sensitivity of a ground network within a coverage area of the cell, or an average or worst detection sensitivity of a ground network directly under the first communication device in a preset time period.

According to a sixth aspect of the embodiment of the present invention, there is provided a third communication apparatus including:

a second determining module for determining P ₀ 、P′ ₀ And at least one of α;

a first transmitting module for transmitting P to the first communication device ₀ 、P′ ₀ And at least one of α;

Optionally, the second determining module is further configured to determine P according to an average or worst detection sensitivity of the terrestrial network within the coverage area of the cell, or an average or worst detection sensitivity of the terrestrial network directly under the first communication device in a preset time period ₀ 、P′ ₀ And alpha.

Optionally, the first sending module is further configured to send P to the first communication device through higher layer signaling ₀ 、P′ ₀ And at least one of α;

the first sending module is further configured to send DCI to the first communication device, where the DCI includes first indication information, where the first indication information is used to instruct the first communication device to determine a parameter value from the value set.

Optionally, the second determining module is further configured to determine the first indication information according to an average or worst detection sensitivity of a ground network within a coverage area of the cell, or an average or worst detection sensitivity of a ground network directly under the first communication device in a preset time period.

According to a seventh aspect of embodiments of the present invention, there is provided a communication device comprising a processor, a memory and a program stored on the memory and executable on the processor, the program when executed by the processor implementing the steps of the power control method according to the first aspect or the steps of the power control method according to the second aspect.

According to an eighth aspect of embodiments of the present invention, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the power control method as described in the first aspect, or the steps of the power control method as described in the second aspect.

In the embodiment of the invention, the first transmitting power is determined according to at least one of the distance from the first communication device to the at least one second communication device, the path loss from the first communication device to the at least one second communication device, the height of the first communication device and the high-level configuration parameter. And the uplink transmitting power of the first communication equipment is controlled through the first transmitting power, so that serious intersystem interference of the ATG system to the ground cellular system is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1a is a schematic diagram of an ATG network;

FIG. 1b is a second schematic diagram of an ATG network;

fig. 2 is a schematic flow chart of a power control method according to an embodiment of the present invention;

FIG. 3 is a second flowchart of a power control method according to an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a first communication device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a third communication device according to an embodiment of the present invention;

fig. 6 is a second schematic structural diagram of a first communication device according to an embodiment of the present invention;

fig. 7 is a second schematic structural diagram of a third communication device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

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

The techniques described herein are not limited to fifth generation mobile communication (5 th-generation, 5G) systems and subsequent evolution communication systems, and are not limited to LTE/LTE evolution (LTE-Advanced, LTE-a) systems, and may also be used for various wireless communication systems such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems.

Referring to fig. 1, there is shown an architecture of an ATG network in which an ATG on-board terminal, i.e. an on-board customer premise equipment (Customer Premise Equipment, CPE) 11, is at a large distance from an ATG base station 12 and a disturbed ground system, i.e. a ground base station 13 or a ground terminal 14 of the same-frequency or adjacent-frequency networking, for example: the typical flying height of a civil aircraft is 6000 m-12000 m, i.e. the distance of the on-board CPE11 from the ground base station 13 is about 10km, whereas at the cell coverage radius of the ATG base station 12 (assuming a radius of 100 km), the distance of the on-board CPE11 from the ATG base station 12 is about 100km.

Among the interference of the ATG system to the terrestrial cellular system, there is an interference scenario that Uplink (UL) transmission of the ATG system interferes with uplink and downlink of the terrestrial cellular system.

In order to solve the interference problem in the above interference scenario, the prior art provides an UL open loop power control scheme, which determines UL signal transmit power according to the path loss from the terminal UE to the primary serving cell, that is:

wherein P is ₀ Indicating the amount of power expected to be received by the primary serving base station on each Resource Block (RB), in decibel milliwatts (decibel relative to one milliwatt, dBm); PL represents the path loss value of the UE to the primary serving cell in dB;

the target transmit power of the UL on each RB is expressed in dBm.

Actual transmit power P per UE _UL From the following components

UL signal bandwidth (M _RB ) Maximum allowed transmit power of UE (P _CMAX ) And some closed loop power control parameters (f (i)) are determined together, namely:

wherein P is _CMAX Is an important UE capability parameter.

The embodiment of the invention provides a power control method, an execution main body of the method is first communication equipment (hereinafter may be simply referred to as UE), the first communication equipment is communication equipment deployed on a terminal side in an ATG network, the first communication equipment may be a mobile phone, an on-board CPE, a forwarding (relay) node of an access and rotation integrated base station (Integrated Access and Backhaul, IAB), and the like, and the first communication equipment may be installed on a carrier device such as an airplane, an automobile, a train, and the like.

Referring to fig. 2, the method comprises the following specific steps:

step 201: determining a first transmit power based on at least one of a distance of the first communication device to the at least one second communication device, a path loss of the first communication device to the at least one second communication device, a height of the first communication device, and a high-level configuration parameter;

in the embodiment of the present invention, the transmission power of the first communication device is not greater than the first transmission power.

at least one second communication device does not include a serving cell of the first communication device;

at least one second communication device is interfered by the first communication device;

There is no communication link between the first communication device and the at least one second communication device, which means physically that the at least one second communication device regards the signal transmitted by the first communication device as interference, i.e. the first communication device is the source of the interference of the at least one second communication device. The first communication device may be an on-board CPE 11 in the architecture shown in fig. 1 and the at least one second communication device may be a ground terminal 14 in the architecture shown in fig. 1.

wherein P is ₀ For the interference level, P ', expected by at least one second communication device' ₀ In the unit frequency domain for at least one second communication deviceThe expected interference level on the resource, α, is a higher layer configuration parameter.

In one embodiment, α is a non-negative number, the physical meaning of α is a path loss compensation coefficient.

In one embodiment, to avoid interference from on-board CPE to other cells, one intuitive approach is: is provided with proper arrangementParameters of the method to

Wherein T is _interf Indicating a certain interference threshold.

For example: for cell coverage edge users, setting open loop power control parameters according to the following formula：

It is obvious that the process is not limited to,

that is, in order to ensure that the UL transmit power of the on-board CPE at the edge of the ATG cell does not cause strong interference to the ground network, the UL performance of the entire ATG network needs to be forcibly reduced, so that the UL transmit power of the on-board CPE at the center of the ATG cell is low, thereby seriously affecting and deteriorating the UL performance of the ATG network. Therefore, there is a need to propose a power control scheme that can effectively improve UL performance of the ATG network itself while avoiding strong interference caused by the on-board CPE to the ground network.

The transmission power P of the first communication device _UL Not greater than the first transmission power P _MAX Can be determined by at least one of the following methods:

equation one:

formula II:

and (3) a formula III:

wherein P is _CMAX，f，c (i) Is configured UE transmit power (configured UE transmit power);

P _MAX，1 representing the transmit power determined from the path loss of the first communication device to the serving cell of the first communication device.

Optionally, the transmission power of the first communication device is not greater than the first transmission power, further comprising: the transmission power of at least one signal and/or channel of the first communication device is not greater than the first transmission power, the at least one signal and/or channel comprising at least: a physical uplink shared channel (PhVsical Uplink Shared Channel, PUSCH), a physical uplink control channel (Physical Uplink Control Channel, PUCCH), a channel sounding reference signal (Sounding Reference Signal, SRS), a physical random access channel (Physical Random Access Channel, PRACH).

In summary, the P determined by the present invention _MAX Is the maximum transmit power of the first communication device. The first transmission power P is not limited by the terminal _MAX And determining the specific expression of the maximum value of the terminal transmitting power.

P is the same as _MAX，1 The method is to adopt the transmitting power obtained by the existing uplink power control method, the method is the transmitting power determined according to the path loss from the first communication equipment to the serving cell of the first communication equipment, and the transmitting power obtained by calculation is recorded as P in the embodiment of the invention _MAX，1 . It will be appreciated that P _MAX，1 Only one representation of the transmit power, the transmit power may also be represented in other forms, such as P _{PUSCH，b，f，c} (i，j，q _d ，l)、P _{PUCCH，b，f，c} (i，q _u ，q _d ，l)、P _{SRS，b，f，c} (i，q _s ，l)、P _{PRACH，b，f，c} (i) And the like, the embodiment of the present invention is not particularly limited thereto.

In particular, the power control method for different signals and/or channels in the prior art according to the transmit power determined by the path loss of the first communication device to the serving cell of the first communication device is as follows:

the transmit power for PUSCH is determined by the following equation:

wherein P is _CMAX，f，c (i) Is configured UE transmit power (configured UE transmit power) defined as UE capability parameter; p (P) _{O_PUSCH，b，f，c} (j) Is P _{O_NOMINAL_PUSCH，b，f，c} (j) And P _{O_UE_PUSCH，b，f，c} (j) Sum, P _{O_NOMINAL_PUSCH，b，f，c} (j) And P _{O_UE_PUSCH，b，f，c} (j) Configured by a high level; alpha _b，f，c (j) Configured by a high layer or takes a value of 1;

is the bandwidth of PUSCH resources, i.e., the number of RBs; PL (PL) _b，f，c (q _d ) Is the downlink loss estimation from the UE to the main service cell; delta _{TF，b，f，c} (i) Configured by higher layers.

The transmit power for PUCCH is determined by the following equation:

Wherein P is _CMAX，f，c (i) Configured UE transmit power, defined as UE capability parameters; p (P) _O _ _{PUCCH，b，f，c} (q _u ) To provide p _0-nominal Time P _{O_NOMINAL_PUCCH} Sum or not provide p _0-nominal Time P _{O_NOMINAL_PUCCH} ＝0；

Is the bandwidth of the PUCCH resource, i.e. the number of RBs; PL (PL) _b，f，c (q _d ) Is the downlink loss estimation from the UE to the main service cell; delta _{TF，b，f，c} (i) Configured by higher layers.

The transmit power for SRS is determined by the following equation:

wherein P is _CMAX，f，c (i) Configured UE transmit power, defined as UE capability parameters; when p is ₀ P when not provided _{O_SRS，b，f，c} (qs)＝P _{O_NOMINAL_PUSCH} (0)；M _{SRS，b，f，c} (i) Is the bandwidth of SRS, i.e., the number of RBs; PL (PL) _b，f，c (q _d ) Is the downlink loss estimation from the UE to the main service cell; alpha _{SRS，b，f，c} (q _s ) Configured by a high level; h is a _b.f.c (i, l) is configured by higher layers.

The transmit power for PRACH is determined by the following equation:

P _{PRACH，b，f，c} (i)＝min{P _CMAX，f，c (i)，P _{PRACH，target，f，c} +PL _b，f，c }

wherein P is _CMAX，f，c (i) Configured UE transmit power, defined as UE capability parameters; p (P) _{PRACH，target，f，c} PRACH target received power, configured by higher layers; PL (PL) _b，f，c Is the main service of the UEAnd estimating the downlink path loss of the serving cell.

Further, the embodiment of the invention provides two specific ways for the first communication device to determine the first transmission power in two scenarios:

scene one: for signals or channels with a fixed transmission bandwidth, such as PRACH, etc., the first communication device directly determines the first transmission power P _MAX ；

Specifically, the first transmit power P of the first communication device is determined according to at least one of the following formulas _MAX ：

P _MAX ＝P ₀ (1.1)；

P _MAX ＝P ₀ +PL (1.2)；

P _MAX ＝P ₀ +f(d) (1.3)；

P _MAX ＝P ₀ +α·f(d) (1.4)；

The above formulas are all expressed in dB, for example: p (P) _MAX And P ₀ In units of dBw or dBm; f (d) has units of dB; alpha is a dimensionless constant.

In the formula (1.3) and the formula (1.4), P ₀ Indicating the level of interference expected to be experienced by at least one second communication device at least one disturbed on the ground.

In some embodiments, α is greater than or equal to 1, for adjusting the transmit power.

Scene II: for signals or channels with variable transmission bandwidth, such as PUSCH, PUCCH, SRS, the first communication device determines the second transmission power of the unit frequency domain resource first, and then determines the first transmission power P after the given frequency domain resource _MAX ；

Specifically, the first communication device determines a first transmission power P _MAX The method comprises the following substeps:

(1) Determining a second transmission power of the first communication device on the unit frequency domain resource according to the distance between the first communication device and the at least one second communication device, the path loss of the first communication device to the at least one second communication device, and the expected interference level of the at least one second communication device on the unit frequency domain resource;

(2) Determining the first transmission power of the first communication equipment according to the second transmission power of the first communication equipment on the unit frequency domain resource and the frequency domain resource size of the transmission signal;

further, the first transmit power P of the first communication device is determined according to at least one of the following formulas _MAX ：

A second transmit power, expressed in dB, for the first communication device on a unit frequency domain resource; n (N) _UnitBW For the number of frequency domain resources per unit contained in the transmitted signal, μ is a subcarrier spacing configuration (Subcarrier spacing configuration) parameter, optionally with a subcarrier spacing of Δf=2 ^μ ·15[kHz]。

In one embodiment, the unit frequency domain resource is RB.

In another embodiment, the unit frequency domain resource is RE.

In another embodiment, the unit frequency domain resource is an RB set including at least one RB, and different RBs may be continuous or discrete in the frequency domain.

In another specific embodiment, the unit frequency domain resource is a set of REs including at least one RE, and different REs may be contiguous or discrete in the frequency domain.

Further, determining a second transmit power of the first communication device on the unit frequency domain resource according to at least one of the following formulas

/>

Where d is the distance of the first communication device from the at least one second communication device, PL represents the path loss of the first communication device to the at least one second communication device, P' ₀ For the interference level expected to be experienced by the at least one second communication device on a unit frequency domain resource, f (d) represents a function of the distance d of the first communication device from the at least one second communication device.

Optionally, the distance d of the first communication device from the second communication device is determined according to at least one of the following formulas:

d＝h ₁ (4.1)；

wherein h is ₁ Is the height of the first communication equipment from the ground, l is the firstThe distance of the communication device from the projected point of the ground to the second communication device.

In the embodiment of the invention, when there are a plurality of second communication devices on the ground for the ATG scene, one implementation mode is to use formula (4.1), wherein h ₁ For the height of the first communication device from the ground, for example: aircraft flying height, d=h ₁ The physical meaning of (a) is the minimum distance from a first communication device to any one of the second communication devices on the ground;

another embodiment is to use formula (4.2), i is the minimum planar distance from the projection point of the first communication device on the ground to the second communication device, and i is a configured parameter. For example, the operator can ensure that in a certain area there is no second communication device at least l unit distances from the aircraft flight trajectory around the projection point (straight line or curved line) on the ground, the distance d of the first communication device from the at least one second communication device can be determined according to formula (4.2).

When l > 0, the distance d determined by equation (4.2) is greater than that determined by equation (4.1), meaning that the first communication device is allowed to employ the first transmit power P while avoiding serious interference to the terrestrial communication system _MAX The value of (2) can be larger, that is, the uplink transmit power limit corresponding to equation (4.2) is looser.

Further, the path loss and/or the function f (d) of the first communication device to the at least one second communication device is determined according to preset parameters and carrier frequencies, i.e.:

the path loss PL of the first communication device to the at least one second communication device is determined according to the following formula:

PL＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

and/or determining the function f (d) according to the following formula

f(d)＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

Wherein a, b and c are preset parameters, f _c Is the carrier frequency.

The physical meaning of f (d) is the path loss in dB for a propagation distance d.

In one embodiment, a=32.45, b=20, c=20, f _c In GHz.

Alternatively, P ₀ 、P′ ₀ And alpha is a pre-agreed or higher layer signaling configuration, the pre-agreed indicating pre-stored P in the first communication device ₀ 、P′ ₀ And alpha.

Specifically, in one embodiment, P is received from a third communication device via higher layer signaling ₀ 、P′ ₀ And an alpha configuration.

There is a communication link between the first communication device, which may be an on-board CPE 11 in the architecture shown in fig. 1, and the third communication device, which may be an ATG base station 12 in the architecture shown in fig. 1, which in one particular embodiment is the serving base station of the first communication device.

In another embodiment, P is received from a third communication device via higher layer signaling ₀ 、P′ ₀ And a set of values for at least one of α; and determining the parameter value from the value set according to the downlink control information (Downlink Control Information, DCI).

The higher layer signaling may be a system message, a radio resource control (Radio Resource Control, RRC) configuration, etc., and the DCI may be an SRS resource indication (SRS Resource Indicator, SRI).

In at least one embodiment of the foregoing, the third communication device is a communication device disposed on a network side in an ATG network. For example, the third communication device is an ATG base station and is also a primary serving base station or primary serving cell of the first communication device.

In the embodiment of the invention, the first transmitting power is determined according to at least one of the distance from the first communication equipment to at least one second communication equipment, the path loss from the first communication equipment to at least one second communication equipment, the height of the first communication equipment and the high-level configuration parameter, and the uplink transmitting power of the first communication equipment is controlled through the first transmitting power, so that serious intersystem interference of an ATG system to a ground cellular system is avoided.

The embodiment of the invention provides a power control method, an execution main body of the method is third communication equipment, and the third communication equipment is communication equipment deployed on a network side in an ATG network.

Referring to fig. 3, the method comprises the following specific steps:

step 301: determining P ₀ 、P′ ₀ And at least one of α;

step 302: transmitting P to first communication device ₀ 、P′ ₀ And at least one of α;

in an embodiment of the present invention, a communication link is provided between the third communication device and the first communication device, and the configuration parameter indicates an interference level expected to be received by at least one second communication device, where the first communication device is an interference source of the at least one second communication device.

There is no communication link between the first communication device and the at least one second communication device, which means physically that the at least one second communication device regards the signal transmitted by the first communication device as interference, i.e. the first communication device is the source of the interference of the at least one second communication device. The first communication device may be an on-board CPE 11 in the architecture shown in fig. 1, the at least one second communication device may be a ground terminal 14 in the architecture shown in fig. 1,

Third communication device determines P ₀ 、P′ ₀ And alpha, wherein P is ₀ For the interference level, P ', expected to be experienced by the second communication device' ₀ For the interference level expected by the second communication device on the unit frequency domain resource, α is a higher layer configuration parameter.

Further, the third communication device determines P according to the average or worst detection sensitivity of the ground network within the coverage area of the cell, or the average or worst detection sensitivity of the ground network directly below the first communication device within the preset time period ₀ 、P′ ₀ And alpha.

Further, the third communication device sends P to the first communication device through higher layer signaling ₀ 、P′ ₀ And a set of values for at least one of α; and transmitting DCI to the first communication equipment, wherein the DCI comprises first indication information which is used for indicating the first communication equipment to determine the parameter value from the value set.

Further, the third communication device determines the first indication information according to the average or worst detection sensitivity of the ground network within the coverage area of the cell or the average or worst detection sensitivity of the ground network directly below the first communication device within the preset time period.

In the embodiment of the invention, the third communication equipment determines the configuration parameters and sends the configuration parameters to the first communication equipment, the first communication equipment determines the maximum transmitting power of the first communication equipment, and the uplink transmitting power of the first communication equipment is controlled by the maximum transmitting power, so that the serious intersystem interference of the ATG system to the ground cellular system is avoided.

The power control method of the embodiment of the present invention is compared with the power control method of the prior art in combination with a specific application scenario, wherein, assuming that the interference level expected to be received by the ground network is less than-100 dBm/15kHz, and a subcarrier spacing of 15kHz is adopted, the interference level expected to be received on each RB needs to be less than-89.2 dBm.

According to the free space channel model:

FSPL(d _3D ，f _c )＝32.45+20log ₁₀ (d _3D )+20log ₁₀ (f _c )；

the path loss corresponding to the distance of 10km is 126dB, and the path loss corresponding to the distance of 100km is 146dB.

At an altitude of 10km, the maximum interference to the ground is less than-89.2 dBm/RB, so the transmission power is less than-89.2 dBm/rb+126 db=36.8 dBm/RB from the viewpoint of interference.

From the perspective of on-board CPE to its service ATG base station, the open loop power control parameter is set as。

For an on-board CPE at the center of the cell, its UL transmit power on each RB should be:

P ₀ +α·PL＝-86dBm+0.9*126＝27.4dBm；

For the on-board CPE at the cell edge, its UL transmit power on each RB should be:

P ₀ +α·PL＝-86dBm+0.9*146＝45.4dBm；

the analysis is next performed in three examples:

example one, only support uplink open loop power control, and employ typical open loop power control parametersThe method of the embodiment of the invention is not adopted;

for the on-board CPE at the center of the cell, its UL transmit power on each RB is-86 dbm+0.9x126=27.4 dBm;

for the cell-edge on-board CPE, its UL transmit power on each RB is-86 dbm+0.9x146=45.4 dBm > 36.8dBm;

thus, the on-board CPE at the cell edge will cause too strong interference to the ground network.

The second example only supports uplink open loop power control, but adjusts open loop power control parameters to avoid interference to a ground network, and does not adopt the method of the embodiment of the invention;

for on-board CPE at the cell edge, requiring UL transmit power on each RB < 36.8dBm, the power control parameters may be set to: p (P) ₀ -86dBm- (45.4 dBm-36.8 dBm) = -94.6dBm, α still being 0.9, then:

for the on-board CPE at the center of the cell, its UL transmit power on each RB is-94.6dbm+0.9x126=18.8 dBm; ignoring the antenna gain, the ATG base station receives 18.8dBm-126 db= -107.2dBm on each RB;

For the cell-edge on-board CPE, its UL transmit power on each RB is-94.6dbm+0.9x146=36.8 dBm; ignoring the antenna gain, the ATG base station receives 36.8dBm-146 db= -109.2dBm on each RB.

Example three, supporting uplink open loop power control method and method of the embodiment of the invention simultaneously, and adopting typical open loop power control parameters；

For the on-board CPE at the center of the cell, its UL transmit power on each RB is min {27.4dBm,36.8dBm } = 27.4dBm; ignoring the antenna gain, the received power of the ATG base station on each RB is 27.4dBm-126 db= -98.6 dBm.

For the on-board CPE at the cell edge, its UL transmit power on each RB is min {45.4dBm,36.8dBm } = 36.8dBm. Ignoring the antenna gain, the ATG base station receives 36.9dBm-146 db= -109.2dBm on each RB.

Comparing the above three examples, it can be found that the first example cannot meet the requirement of avoiding the interference to the ground system; the second and third examples can meet the requirement of avoiding interference to the ground system, and for the airborne CPE at the cell edge, the power of the UL signal received by the ATG base station is the same and is-109.2 dBm/RB; however, for the on-board CPE in the cell center, the UL signal power received by the ATG base station in example two is-107.2 dBm/RB, and the example three is-98.6 dBm, which is higher than example two by 8.6dB, so compared with the existing scheme, the method of the embodiment of the invention can effectively improve the UL transmission performance of the on-board CPE in the center or good point of the ATG cell while also avoiding the interference of the on-board CPE to the ground network.

Referring to fig. 4, an embodiment of the present invention provides a first communication device 400 including: a first transceiver 401 and a first processor 402, wherein,

the first processor 402 is configured to determine a first transmit power according to at least one of a distance from the first communication device to at least one second communication device, a path loss from the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter;

Optionally, the first processor 402 is configured to determine the first transmission power P according to at least one of the following methods _MAX Comprising:

equation one:

formula II:

and (3) a formula III:

PUSCH、PUCCH、SRS、PRACH。

optionally, the first processor 402 is further configured to determine the first transmission power P according to at least one of the following formulas _MAX ：

P _MAX ＝P ₀ ；

P _MAX ＝P ₀ +PL；

P _MAX ＝P ₀ +f(d)；

P _MAX ＝P ₀ +α·f(d)；

Optionally, the first processor 402 is further configured to determine a second transmission power of the first communication device on the unit frequency domain resource according to at least one of a distance of the first communication device from the at least one second communication device, a path loss of the first communication device to the at least one second communication device, and an interference level expected to be received by the at least one second communication device on the unit frequency domain resource;

Optionally, the first processor 402 is further configured to determine the second transmit power of the first communication device on the unit frequency domain resource according to at least one of the following formulas

Optionally, the first processor 402 is further configured to determine a distance from the first communication device to the at least one second communication device according to at least one of a height of the first communication device and a distance from a projection point of the first communication device on the ground to the at least one second communication device.

Optionally, the first processor 402 is further configured to determine the distance d between the first communication device and the at least one second communication device according to at least one of the following formulas:

d＝h ₁ ；

Optionally, the first processor 402 is further configured to determine a path loss and/or the function f (d) of the first communication device to the at least one second communication device according to preset parameters and carrier frequency.

Optionally, the first processor 402 is further configured to determine a path loss PL of the first communication device to the at least one second communication device according to the following formula:

PL＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

and/or determining said function f (d) according to the following formula

f(d)＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

Wherein a, b and c are preset parameters, f _c Is the carrier frequency.

In the embodiment of the invention, the maximum transmitting power of the first communication equipment is determined according to the distance between the first communication equipment and at least one second communication equipment and/or the configuration parameters received from the third communication equipment, and the uplink transmitting power of the first communication equipment is controlled by the maximum transmitting power, so that serious intersystem interference of an ATG system to a ground cellular system is avoided.

Referring to fig. 5, an embodiment of the present invention provides a third communication apparatus 500 including: a second transceiver 501 and a second processor 502;

wherein the second processor 502 is configured to determine P ₀ 、P′ ₀ And at least one of α;

the second transceiver 501 is configured to send P to the first communication device ₀ 、P′ ₀ And at least one of α;

Alternatively, the process may be carried out in a single-stage,the second processor 502 is further configured to determine P according to an average or worst detection sensitivity of a terrestrial network within a coverage area of the cell, or an average or worst detection sensitivity of a terrestrial network directly below the first communication device in a preset time period ₀ 、P′ ₀ And alpha.

Optionally, the second transceiver 501 is further configured to send P to the first communication device through higher layer signaling ₀ 、P′ ₀ And at least one of α;

the second transceiver 501 is further configured to send DCI to the first communication device, where the DCI includes first indication information, where the first indication information is used to instruct the first communication device to determine a parameter value from the value set.

Optionally, the second processor 502 is further configured to determine the first indication information according to an average or worst detection sensitivity of a terrestrial network within a coverage area of the cell, or an average or worst detection sensitivity of a terrestrial network directly under the first communication device in a preset time period.

Referring to fig. 6, an embodiment of the present invention provides a first communication apparatus 600 including:

the first determining module 601 is configured to determine a first transmission power according to at least one of a distance from the first communication device to at least one second communication device, a path loss from the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter;

Optionally, the first determining module 601 is configured to determine the first transmission power P according to at least one of the following methods _MAX Comprising:

equation one:

formula II:

and (3) a formula III:

PUSCH、PUCCH、SRS、PRACH。

optionally, the first determining module 601 is further configured to determine the first transmission power P according to at least one of the following formulas _MAX ：

P _MAX ＝P ₀ ；

P _MAX ＝P ₀ +PL；

P _MAX ＝P ₀ +f(d)；

P _MAX ＝P ₀ +α·f(d)；

Optionally, the first determining module 601 is further configured to determine a second transmission power of the first communication device on a unit frequency domain resource according to at least one of a distance between the first communication device and the at least one second communication device, a path loss of the first communication device to the at least one second communication device, and an interference level expected to be received by the at least one second communication device on the unit frequency domain resource;

Optionally, the first determining module 601 is further configured to determine a second transmission power of the first communication device on a unit frequency domain resource according to at least one of the following formulas

Optionally, the first determining module 601 is further configured to determine a distance from the first communication device to the at least one second communication device according to at least one of a height of the first communication device and a distance from a projection point of the first communication device on the ground to the at least one second communication device.

Optionally, the first determining module 601 is further configured to determine a distance d between the first communication device and the at least one second communication device according to at least one of the following formulas:

d＝h ₁ ；

Optionally, the first determining module 601 is further configured to determine a path loss and/or the function f (d) of the first communication device to the at least one second communication device according to preset parameters and carrier frequency.

Optionally, the first determining module 601 is further configured to determine a path loss PL from the first communication device to the at least one second communication device according to the following formula:

PL＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

and/or determining said function f (d) according to the following formula

f(d)＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

Wherein a, b and c are preset parameters, f _c Is the carrier frequency.

Optionally, the first communication device further comprises: a first receiving module for receiving P from the third communication device through higher layer signaling ₀ 、P′ ₀ And a set of values for at least one of α;

Referring to fig. 7, an embodiment of the present invention provides another third communication device 700, comprising:

a second determining module 701, configured to determine P ₀ 、P′ ₀ And at least one of α;

a first sending module 702, configured to send P to a first communication device ₀ 、P′ ₀ And at least one of α;

Optionally, the second determining module 701 is further configured to determine P according to an average or worst detection sensitivity of a terrestrial network within a coverage area of the cell, or an average or worst detection sensitivity of a terrestrial network directly below the first communication device in a preset time period ₀ 、P′ ₀ And alpha.

Optionally, the first sending module 702 is further configured to send P to the first communication device through higher layer signaling ₀ 、P′ ₀ And at least one of α;

the first sending module 702 is further configured to send DCI to the first communication device, where the DCI includes first indication information, where the first indication information is used to instruct the first communication device to determine a parameter value from the value set.

Optionally, the second determining module 701 is further configured to determine the first indication information according to an average or worst detection sensitivity of a terrestrial network within a coverage area of the cell, or an average or worst detection sensitivity of a terrestrial network directly under the first communication device in a preset time period.

Referring to fig. 8, an embodiment of the present invention provides a communication device 800 including: a processor 801, a transceiver 802, a memory 803, and a bus interface.

Among other things, the processor 801 may be responsible for managing the bus architecture and general processing. The memory 803 may store data used by the processor 801 in performing operations.

In an embodiment of the present invention, the communication device 800 may further include: a program stored on the memory 803 and executable on the processor 801, which when executed by the processor 801, implements the steps of the method provided by embodiments of the present invention.

In fig. 8, a bus architecture may be comprised of any number of interconnected buses and bridges, and in particular, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., all as are well known in the art and, therefore, further description of embodiments of the present invention will not be provided. The bus interface provides an interface. The transceiver 802 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the processes of the above method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power control method applied to a first communication device, the method comprising:

according to P ₀ And said first communication device to at least one second communication deviceDetermining a first transmit power, or according to P ', based on at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device, a height of the first communication device, and a' ₀ And determining a first transmit power from at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device, and a;

the transmit power of the first communication device is not greater than the first transmit power;

wherein the first communication equipment is communication equipment in an ATG system, and the second communication equipment is communication equipment in a ground cellular system, P ₀ For the interference level, P ', expected to be received by the at least one second communication device' ₀ For the interference level expected to be experienced by the at least one second communication device on the unit frequency domain resource, α is a higher layer configuration parameter.

2. The method of claim 1, the at least one second communication device having at least one of the following features:

3. The method of claim 1, wherein the transmit power P of the first communication device _UL Not greater than the first transmission power P _MAX The method comprises at least one of the following determination methods:

equation one:

formula II:

and (3) a formula III:

wherein P is _CMAX,f,c (i) Is configured UE transmit power;

P _MAX,1 representing the transmit power determined from the path loss of the first communication device to the serving cell of the first communication device.

4. The method of claim 1, wherein the transmit power of the first communication device is not greater than the first transmit power, further comprising:

a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, a channel sounding reference signal SRS, a physical random access channel PRACH.

5. The method of claim 1, wherein the determining the first transmit power based on at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter comprises:

determining the first transmit power P of the first communication device according to at least one of the following formulas _MAX ：

P _MAX ＝P ₀ ；

P _MAX ＝P ₀ +PL；

P _MAX ＝P ₀ +f(d)；

P _MAX ＝P ₀ +α·f(d)；

6. The method of claim 1, wherein the determining the first transmit power based on at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device, and a high-level configuration parameter comprises:

7. The method of claim 6, wherein the determining the first transmit power based on the second transmit power of the first communication device on a unit frequency domain resource and a frequency domain resource size of a transmit signal comprises:

determining a first transmit power P of the first communication device according to at least one of the following formulas _MAX ：

8. The method of claim 6, wherein the determining the second transmit power of the first communication device on the unit frequency domain resource based on at least one of a distance of the first communication device from the at least one second communication device, a path loss of the first communication device to the at least one second communication device, and an interference level expected to be experienced by the at least one second communication device on the unit frequency domain resource comprises:

9. The method according to claim 1, wherein the method further comprises:

10. The method of claim 9, wherein determining the distance of the first communication device to the at least one second communication device based on at least one of a height of the first communication device and a distance of a projected point of the first communication device on the ground to the at least one second communication device comprises:

d＝h ₁ ；

11. The method according to claim 5 or 8, characterized in that the method further comprises:

12. The method according to claim 11, wherein said determining the path loss of the first communication device to the at least one second communication device and/or the function f (d) according to preset parameters and carrier frequency comprises:

PL＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

and/or determining said function f (d) according to the following formula

f(d)＝a+b·log ₁₀ (d)+c·log ₁₀ (f _c )；

Wherein a, b and c are preset parameters, f _c Is the carrier frequency.

13. The method according to claim 1, wherein the method further comprises:

receiving P from a third communication device via higher layer signaling ₀ 、P′ ₀ And a set of values for at least one of α;

14. A power control method applied to a third communication device, the method comprising:

determining a high-level configuration parameter, wherein the high-level configuration parameter comprises any one of the following:

P ₀ ；

P′ ₀ ；

P ₀ and alpha;

P′ ₀ and alpha;

P ₀ 、P′ ₀ and alpha;

transmitting any one of the following to the first communication device:

P ₀ ；

P′ ₀ ；

P ₀ and alpha;

P′ ₀ and alpha;

P ₀ 、P′ ₀ and alpha;

causing the first communication device to determine a first transmit power according to at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device, and the higher-layer configuration parameter, the transmit power of the first communication device being no greater than the first transmit power;

wherein the first communication device is a communication device in an ATG system, the second communication device is a communication device in a ground cellular system, and the P is a communication device in a ground cellular system ₀ For an interference level expected to be experienced by at least one second communication device, said P' ₀ For the interference level expected to be experienced by at least one second communication device on a unit frequency domain resource, α is a higher layer configuration parameter.

15. The method of claim 14, wherein the determining P ₀ 、P′ ₀ And alpha, comprising:

16. The method of claim 14, wherein the transmitting P to the first communication device ₀ 、P′ ₀ And alpha, comprising:

transmitting P to a first communication device by higher layer signaling ₀ 、P′ ₀ And a value set of at least one of α.

17. The method of claim 16, wherein the method further comprises:

18. The method of claim 17, wherein the method further comprises:

19. A first communication device, comprising: a first transceiver and a first processor, wherein,

the first processor is used for according to P ₀ And at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device and a, determining a first transmit power, or according to P' ₀ And said first communication device to at leastDetermining a first transmit power from at least one of a distance of one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device, and a;

20. A first communication device, comprising:

a first determining module for determining according to P ₀ And at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device and a, determining a first transmit power, or according to P' ₀ And determining a first transmit power from at least one of a distance of the first communication device to at least one second communication device, a path loss of the first communication device to at least one second communication device, a height of the first communication device, and a;

21. A third communication device, comprising: a second transceiver and a second processor, wherein,

The second processor is configured to determine a high-level configuration parameter, where the high-level configuration parameter includes any one of the following:

P ₀ ；

P′ ₀ ；

P ₀ and alpha;

P′ ₀ and alpha;

P ₀ 、P′ ₀ and alpha;

the second transceiver is configured to send any one of the following to the first communication device:

P ₀ ；

P′ ₀ ；

P ₀ and alpha;

P′ ₀ and alpha;

P ₀ 、P′ ₀ and alpha;

wherein the first communication equipment is communication equipment in an ATG system, and the second communication equipment is communication equipment in a ground cellular system, P ₀ For the interference level, P ', expected by at least one second communication device' ₀ For the interference level expected to be experienced by at least one second communication device on a unit frequency domain resource, α is a higher layer configuration parameter.

22. A third communication device, comprising:

the second determining module is configured to determine a high-level configuration parameter, where the high-level configuration parameter includes any one of the following:

P ₀ ；

P′ ₀ ；

P ₀ And alpha;

P′ ₀ and alpha;

P ₀ 、P′ ₀ and alpha;

a first transmitting module for transmitting to the first communication device

Any one of the following:

P ₀ ；

P′ ₀ ；

P ₀ and alpha;

P′ ₀ and alpha;

P ₀ 、P′ ₀ and alpha;

23. A communication device comprising a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the power control method of any one of claims 1 to 13 or the steps of the power control method of any one of claims 14 to 18.

24. A computer readable storage medium, characterized in that the computer readable storage medium stores thereon a computer program, which when executed by a processor, implements the steps of the power control method according to any of claims 1 to 13, or the steps of the power control method according to any of claims 14 to 18.