Power allocation method and device for satellite-terrestrial communication network and base station power management center

Abstract

The present invention provides a power allocation method, device, and base station power management center for a satellite-terrestrial communication network. During uplink transmission by a user terminal, current channel information of a section from a user to a base station in the satellite-terrestrial communication network is obtained, and if it is determined that the section from the user to the base station satisfies a first safety communication condition, a first artificial auxiliary noise power to be allocated by the base station is determined based on the current channel information of the section from the user to the base station and the first artificial auxiliary noise power is added to the section from the user to the base station; current channel information of a section from a base station to a satellite in the satellite-terrestrial communication network is obtained, and if it is determined that the section from the base station to the satellite satisfies a second safety communication condition, a base station normal signal transmission power of the section from the base station to the satellite and a second artificial auxiliary noise power to be allocated by the base station are determined based on the current channel information of the section from the base station to the satellite, and the base station normal signal transmission power and the second artificial auxiliary noise power are added to the section from the base station to the satellite.

Description

[Technical field]

[0001] The present invention relates to the technical field of communication network security, and in particular to a power allocation method, device, base station power management center and computer-readable storage medium for a satellite-terrestrial communication network.

[0002] <Cross-reference of related applications> This application claims priority to a Chinese patent application bearing application number 202310120786.X, filed with the China Patent Office on January 18, 2023, the entire contents of which are incorporated herein by reference. [Background technology]

[0003] In satellite-terrestrial communication networks, remote base stations and access points are connected to a core network via satellites to provide cheap and efficient communication access services to terrestrial users. However, considering the wide coverage and open channel characteristics of satellite-terrestrial communication networks, coupled with the fact that satellite-terrestrial communication networks transmit large amounts of confidential data that require high security, if eavesdropping by malicious users occurs, it may cause significant political and economic losses. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a power allocation method, device, base station power management center and computer-readable storage medium for a satellite-terrestrial communication network, which can suppress eavesdropping by malicious users, improve the upstream safety capacity and improve communication security. [Means for solving the problem]

[0005] According to the present invention, during an uplink transmission by a user terminal, current channel information of a section from a user to a base station of a satellite-terrestrial communication network is obtained, and the current channel information of the section from the user to the base station includes an uplink transmission power of the user terminal; When it is determined that the section from the user to the base station satisfies a first secure communication condition, determining a first artificial auxiliary noise power to be allocated by the base station based on current channel information of the section from the user to the base station; adding a first artificial auxiliary noise power to a section from the user to the base station, and performing power allocation using the uplink transmission power of the user terminal and the first artificial auxiliary noise power; Obtaining current channel information of a section from a base station to a satellite of a satellite-terrestrial communication network; determining, when it is determined that the section from the base station to the satellite satisfies the second safe communication condition, a base station normal signal transmission power for the section from the base station to the satellite and a second artificial auxiliary noise power to be allocated by the base station based on current channel information for the section from the base station to the satellite; A power allocation method for a satellite-terrestrial communication network is provided, the method including: applying a base station normal signal transmission power and a second artificial auxiliary noise power to a section from the base station to the satellite, and performing power allocation using the base station normal signal transmission power and the second artificial auxiliary noise power.

[0006] Furthermore, if it is determined that the section from the user to the base station satisfies the first secure communication condition, generating a first safety communication identifier, the first safety communication identifier being used to identify that a section from the user to the base station is in a safety communication state; Adding a first artificial auxiliary noise power to a section from the user to the base station Adding a first artificial auxiliary noise power to a section from the user to the base station based on the first secure communication identifier.

[0007] Furthermore, determining that the section from the user to the base station satisfies the first secure communication condition includes: determining a channel gain ratio auxiliary parameter from the user to the base station; The method includes determining that the section from the user to the base station satisfies a first safety communication condition based on a channel gain ratio auxiliary parameter of the section from the user to the base station under a constraint of maximizing the safety capacity of the section from the user to the base station.

[0008] In addition, the current channel information of the section from the user to the base station further includes channel information sent by the user terminal and a first eavesdropper channel state information; The initialization parameters of the section from the user to the base station in the satellite-terrestrial communication network include full-duplex self-interference information of the base station, noise information of the receiving end of the base station, initialization parameters transmitted by the user terminal, and maximum transmission power of the base station; Determining a channel gain ratio auxiliary parameter for a section from a user to a base station includes: determining a channel gain coefficient based on a first eavesdropper channel state information, channel information transmitted by the user terminal, and full-duplex self-interference information of the base station; Determining a transmission influence coefficient of an influence of noise interference on transmission according to noise information of a receiving end of the base station, channel information transmitted by the user terminal, and initialization parameters transmitted by the user terminal; Determining that the section from the user to the base station satisfies the first secure communication condition includes: The method includes determining that the section from the user to the base station satisfies a first secure communication condition based on the channel gain coefficient being greater than 1 and the maximum transmission power of the base station being greater than a transmission influence coefficient.

[0009] Furthermore, the first eavesdropper channel state information includes channel state information from the base station to the eavesdropper in a section from the user to the base station, and channel state information from the user terminal to the eavesdropper in a section from the user to the base station; Determining a channel gain coefficient based on the first eavesdropper channel state information, the channel information transmitted by the user terminal, and the full-duplex self-interference information of the base station includes: determining a first channel gain ratio between a channel from the base station to the eavesdropper and a base station self-interference channel based on channel state information from the base station to the eavesdropper in a section from the user to the base station and full-duplex self-interference information of the base station; determining a second channel gain ratio between a channel from the user terminal to the base station and a channel from the user terminal to the eavesdropper based on the channel information transmitted by the user terminal and channel state information from the user terminal to the base station in a section from the user to the base station; Determining a transmission influence coefficient of an influence of noise interference on a transmission according to noise information of a receiving end of a base station, channel information transmitted by a user terminal, and an initialization parameter transmitted by a user terminal, Determining, based on the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal, a first ratio between the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal; According to the noise information of the receiving end of the base station, the channel information sent by the user terminal and the initialization parameter sent by the user terminal, determining a second ratio between the noise information of the receiving end of the base station, the channel information sent by the user terminal and the initialization parameter sent by the user terminal; Determining that the section from the user to the base station satisfies a first safe communication condition based on the fact that the channel gain coefficient is greater than 1 and the maximum transmission power of the base station is greater than a transmission influence coefficient, The method includes determining that a first channel gain ratio is greater than 1, a product of the first channel gain ratio and a second channel gain ratio is greater than 1, and a maximum transmit power of the base station is greater than a ratio of the first ratio adjusted by the second channel gain ratio and a second ratio adjusted by the first channel gain ratio and the second channel gain ratio.

[0010] Furthermore, determining a first artificial auxiliary noise power allocated by the base station based on current channel information of a section from the user to the base station includes: determining a power auxiliary parameter from the user to the base station based on a channel gain ratio auxiliary parameter from the user to the base station; determining a first artificial auxiliary noise power in a section from the user to the base station based on a power auxiliary parameter in the section from the user to the base station.

[0011] Furthermore, if it is determined that the section from the base station to the satellite satisfies the second safe communication condition, generating a second safety communication identifier, the second safety communication identifier being used to identify that the section from the base station to the satellite is in a safety communication state; Adding the base station normal signal transmission power and the second artificial auxiliary noise power to the section from the base station to the satellite and applying a base station normal signal transmission power and a second artificial auxiliary noise power to a section from the base station to the satellite based on the second secure communication identifier.

[0012] Furthermore, determining that the section from the base station to the satellite satisfies the second secure communication condition includes: determining a channel gain ratio auxiliary parameter for a base station to satellite section; The method includes determining that the section from the base station to the satellite satisfies a second safety communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite under a constraint of maximizing the safety capacity of the section from the base station to the satellite.

[0013] Furthermore, the current channel information of the section from the base station to the satellite includes a channel gain from the base station to the satellite and a second eavesdropper channel state information, and the second eavesdropper channel state information includes channel state information from the base station to the eavesdropper in the section from the base station to the satellite; The initialization parameters of the section from the base station to the satellite in the satellite-terrestrial communication network include noise information of the receiving end of the satellite, the initialization parameters transmitted by the base station, and the residual interference coefficient of the receiving end of the satellite; Determining a channel gain ratio auxiliary parameter for a base station to satellite section comprises: determining a third channel gain ratio between the base station-to-satellite channel and the base station-to-eavesdropper channel in the base station-to-satellite section based on the base station-to-satellite channel gain and the second eavesdropper channel state information; determining a third ratio between the noise at the receiving end of the satellite, the channel gain from the base station to the satellite, and the initialization parameter transmitted by the base station, based on the noise information at the receiving end of the satellite, and the channel gain from the base station to the satellite and the initialization parameter transmitted by the base station; Determining that the section from the base station to the satellite satisfies a second secure communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite, determining that the sum of the third ratio adjusted by the third channel gain ratio and a residual interference coefficient at the receiving end of the satellite is less than one;

[0014] Further, determining a base station normal signal transmission power and a second artificial auxiliary noise power allocated by the base station in the section from the base station to the satellite based on current channel information in the section from the base station to the satellite, determining a power auxiliary parameter for the base station to the satellite based on the channel gain ratio auxiliary parameter for the base station to the satellite; determining a base station normal signal transmit power and a second artificial auxiliary noise power for the base station-to-satellite section based on the power auxiliary parameter for the base station-to-satellite section.

[0015] Furthermore, the power allocation method of the satellite-terrestrial communications network further includes, if it is determined that the section from the user to the base station does not satisfy the first safe communication condition, returning to the execution of obtaining current channel information of the section from the user to the base station of the satellite-terrestrial communications network when a new user terminal performs an uplink transmission or when the current user terminal performs an uplink transmission again.

[0016] Furthermore, the power allocation method of the satellite-terrestrial communications network further includes, if it is determined that the section from the base station to the satellite does not satisfy the second safe communication condition, returning to the execution of obtaining current channel information of the section from the base station to the satellite of the satellite-terrestrial communications network when a new user terminal performs an uplink transmission or when the current user terminal performs an uplink transmission again.

[0017] According to the present invention, there is provided an information collection module for a section from a user to a base station, for acquiring current channel information of a section from a user to a base station of a satellite-terrestrial communication network during uplink transmission by a user terminal, the current channel information of the section from the user to the base station including an uplink transmission power of the user terminal; a power determination module of the section from the user to the base station, for determining a first artificial auxiliary noise power allocated by the base station according to current channel information of the section from the user to the base station when determining that the section from the user to the base station satisfies a first safe communication condition; a power allocation module in a section from the user to the base station, for adding a first artificial auxiliary noise power to a section from the user to the base station, and performing power allocation between the uplink transmission power of the user terminal and the first artificial auxiliary noise power; an information collection module for acquiring current channel information of a section from a base station to a satellite of a satellite-terrestrial communication network; a power determination module for a section from the base station to the satellite, for determining a base station normal signal transmission power for the section from the base station to the satellite and a second artificial auxiliary noise power allocated by the base station based on current channel information of the section from the base station to the satellite when it is determined that the section from the base station to the satellite satisfies a second safe communication condition; A power allocation device for a satellite-terrestrial communication network is provided, the power allocation device including: a power allocation module for a section from a base station to a satellite, for applying a base station normal signal transmission power and a second artificial auxiliary noise power to a section from the base station to the satellite, and for performing power allocation using the base station normal signal transmission power and the second artificial auxiliary noise power.

[0018] Furthermore, the power determination module of the section from the user to the base station is further used to generate a first safety communication identifier when it is determined that the section from the user to the base station satisfies a first safety communication condition, and the first safety communication identifier is used to identify that the section from the user to the base station is in a safe communication state; The power allocation module of the section from the user to the base station is specifically used for adding a first artificial auxiliary noise power to the section from the user to the base station according to the first secure communication identifier.

[0019] Further, the apparatus further includes a first secure communication condition determination module for determining whether a section from the user to the base station satisfies a first secure communication condition, the first secure communication condition determination module including a first channel gain ratio auxiliary parameter submodule and a first secure communication condition determination submodule; The first channel gain ratio auxiliary parameter submodule is used for determining a channel gain ratio auxiliary parameter of an interval from a user to a base station; The first safe communication condition determination submodule is used to determine that the section from the user to the base station satisfies the first safe communication condition based on a channel gain ratio auxiliary parameter of the section from the user to the base station under the constraint of maximizing the safety capacity of the section from the user to the base station.

[0020] In addition, the current channel information of the section from the user to the base station further includes channel information sent by the user terminal and a first eavesdropper channel state information; The initialization parameters of the section from the user to the base station in the satellite-terrestrial communication network include full-duplex self-interference information of the base station, noise information of the receiving end of the base station, initialization parameters transmitted by the user terminal, and maximum transmission power of the base station; The first channel gain ratio auxiliary parameter submodule includes: a channel gain coefficient determining unit and a transmission influence coefficient determining unit; The channel gain coefficient determining unit is used to determine a channel gain coefficient according to the first eavesdropper channel state information, the channel information transmitted by the user terminal, and the full-duplex self-interference information of the base station; The transmission influence coefficient determining unit is used to determine a transmission influence coefficient of the influence that noise interference has on transmission according to the noise information of the receiving end of the base station, the channel information sent by the user terminal, and the initialization parameters sent by the user terminal; The first safe communication condition judgment submodule includes a first safe communication condition judgment unit; The first safe communication condition judgment unit is used to judge that the section from the user to the base station satisfies the first safe communication condition based on the channel gain coefficient being greater than 1 and the maximum transmission power of the base station being greater than the transmission influence coefficient.

[0021] Furthermore, the first eavesdropper channel state information includes channel state information from the base station to the eavesdropper in a section from the user to the base station, and channel state information from the user terminal to the eavesdropper in a section from the user to the base station; The channel gain coefficient determining unit specifically includes: Determine a first channel gain ratio between a channel from the base station to the eavesdropper and a base station self-interference channel according to channel state information from the base station to the eavesdropper in a section from the user to the base station and full-duplex self-interference information of the base station; is used to determine a second channel gain ratio between a channel from the user terminal to the base station and a channel from the user terminal to the eavesdropper based on the channel information transmitted by the user terminal and the channel state information from the user terminal to the base station in a section from the user to the base station; The transmission influence coefficient determining unit specifically includes: Determine, based on the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal, a first ratio between the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal; According to the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameter transmitted by the user terminal, a second ratio is determined between the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameter transmitted by the user terminal; The first secure communication condition judgment unit is specifically used for determining that the first channel gain ratio is greater than 1, the product of the first channel gain ratio and the second channel gain ratio is greater than 1, and the maximum transmission power of the base station is greater than the ratio between the first ratio adjusted by the second channel gain ratio and the second ratio adjusted by the first channel gain ratio and the second channel gain ratio.

[0022] Furthermore, the power determination module of the section from the user to the base station is specifically used for determining a power auxiliary parameter of the section from the user to the base station based on the channel gain ratio auxiliary parameter of the section from the user to the base station, and determining a first artificial auxiliary noise power of the section from the user to the base station based on the power auxiliary parameter of the section from the user to the base station.

[0023] Furthermore, the power determination module of the section from the base station to the satellite is further used to generate a second safe communication identifier when it is determined that the section from the base station to the satellite satisfies the second safe communication condition, and the second safe communication identifier is used to identify that the section from the base station to the satellite is in a safe communication state; The power allocation module of the section from the base station to the satellite is specifically used for adding the base station normal signal transmission power and the second artificial auxiliary noise power to the section from the base station to the satellite based on the second secure communication identifier.

[0024] Further, the apparatus further includes a second safety communication condition determination module for determining whether a section from the base station to the satellite satisfies a second safety communication condition, the second safety communication condition determination module including a second channel gain ratio auxiliary parameter submodule and a second safety communication condition determination submodule; The second channel gain ratio auxiliary parameter submodule is used for determining a channel gain ratio auxiliary parameter of a section from the base station to the satellite; The second safety communication condition determination submodule is used to determine that the section from the base station to the satellite satisfies a second safety communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite under the constraint of maximizing the safety capacity of the section from the base station to the satellite.

[0025] Furthermore, the current channel information of the section from the base station to the satellite includes a channel gain from the base station to the satellite and a second eavesdropper channel state information, and the second eavesdropper channel state information includes channel state information from the base station to the eavesdropper in the section from the base station to the satellite; The initialization parameters of the section from the base station to the satellite in the satellite-terrestrial communication network include noise information of the receiving end of the satellite, the initialization parameters transmitted by the base station, and the residual interference coefficient of the receiving end of the satellite; The second channel gain ratio auxiliary parameter submodule specifically includes: determining a third channel gain ratio between the base station-to-satellite channel and the base station-to-eavesdropper channel in a section from the base station to the satellite based on the channel gain from the base station to the satellite and the second eavesdropper channel state information; Based on the noise information of the receiving end of the satellite, the channel gain from the base station to the satellite, and the initialization parameter transmitted by the base station, a third ratio of the noise of the receiving end of the satellite to the channel gain from the base station to the satellite and the initialization parameter transmitted by the base station is determined; The second safe communication condition judgment sub-module includes a second safe communication condition judgment unit; The second safe communication condition judgment unit is used for judging whether the sum of the third ratio adjusted by the third channel gain ratio and the residual interference coefficient at the receiving end of the satellite is less than one.

[0026] Furthermore, the power determination module of the section from the base station to the satellite is specifically used for determining a power auxiliary parameter of the section from the base station to the satellite based on the channel gain ratio auxiliary parameter of the section from the base station to the satellite, and for determining a base station normal signal transmission power and a second artificial auxiliary noise power of the section from the base station to the satellite based on the power auxiliary parameter of the section from the base station to the satellite.

[0027] According to the present invention there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, perform any of the methods described above. Effect of the Invention

[0028] Furthermore, in the power allocation method for a satellite-terrestrial communication network of the present invention, when two sections, the section from the user to the base station and the section from the base station to the satellite, respectively satisfy the corresponding secure communication conditions, the first artificial auxiliary noise power allocated by the base station is added to the section from the user to the base station, thereby achieving optimal power allocation for that section, and the base station normal signal transmission power and the second artificial auxiliary noise power allocated by the base station are added to the section from the base station to the satellite, thereby achieving optimal power allocation for that section.Finally, by achieving optimal power allocation for the two sections, eavesdropping by malicious users is suppressed, the upstream secure transmission capacity is improved, and secure information transmission is promoted. [Brief description of the drawings]

[0029] [Figure 1] 1 is a schematic diagram showing a system of a satellite-terrestrial communication network provided by an embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic diagram showing the flow of a power allocation method in a satellite-terrestrial communication network provided by an embodiment of the present invention; [Diagram 3] FIG. 2 is a schematic diagram showing the flow of a power allocation method in a satellite-terrestrial communication network from a user to a base station provided by an embodiment of the present invention; [Figure 4] FIG. 2 is a schematic diagram showing the flow of a power allocation method for a satellite-terrestrial communication network from a base station to a satellite provided by an embodiment of the present invention; [Diagram 5] FIG. 2 is a schematic diagram illustrating the upstream safety capacity performance of a satellite-terrestrial communication network provided by an embodiment of the present invention; [Figure 6] FIG. 2 is a schematic diagram showing modules of a power allocation device in a satellite-terrestrial communication network provided by an embodiment of the present invention; [Figure 7] FIG. 2 is a block diagram showing modules of a base station power management center provided by an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Exemplary embodiments are now described in detail, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise noted. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with one or more embodiments of the present invention. On the contrary, they are merely examples of apparatus and methods consistent with some aspects of one or more embodiments of the present invention, as detailed in the appended claims.

[0031] It should be noted that in other embodiments, the steps of the corresponding method are not necessarily performed in the order shown and described herein. In some other embodiments, the method may include more or fewer steps than described herein. Also, a single step described herein may be broken down into multiple steps for illustration in other embodiments, and multiple steps described herein may be combined into a single step for illustration in other embodiments.

[0032] In order to effectively prevent eavesdropping by malicious users and achieve secure transmission, an embodiment of the present invention provides a power allocation method for a satellite-terrestrial communication network.

[0033] Here, during uplink transmission by a user terminal (a current user terminal accessing the core network), current channel information of a section from the user to the base station in the satellite-terrestrial communication network is obtained, and if it is determined that the section from the user to the base station satisfies a first safety communication condition, a first artificial auxiliary noise power to be allocated by the base station is determined based on the current channel information of the section from the user to the base station, the first artificial auxiliary noise power is added to the section from the user to the base station, and power allocation is performed using the uplink transmission power of the user terminal and the first artificial auxiliary noise power. Current channel information of a section from the base station to the satellite in the satellite-terrestrial communication network is obtained, and if it is determined that the section from the base station to the satellite satisfies a second safety communication condition, a base station normal signal transmission power and a second artificial auxiliary noise power are determined for the section from the base station to the satellite based on the current channel information of the section from the base station to the satellite, the base station normal signal transmission power and the second artificial auxiliary noise power are added to the section from the base station to the satellite, and power allocation is performed using the base station normal signal transmission power and the second artificial auxiliary noise power.

[0034] In an embodiment of the present invention, when two sections, a section from a user to a base station and a section from a base station to a satellite, respectively satisfy the corresponding secure communication conditions, a first artificial auxiliary noise power allocated by the base station is added to the section from the user to the base station to realize optimal power allocation in the section, thereby effectively suppressing eavesdropping by malicious users in the section from the user to the base station, improving communication security in the section from the user to the base station, and promoting secure information transmission. In addition, a base station normal signal transmission power and a second artificial auxiliary noise power allocated by the base station are added to the section from the base station to the satellite to realize optimal power allocation in the section, thereby effectively suppressing eavesdropping by malicious users in the section from the base station to the satellite, improving communication security in the section from the base station to the satellite, and promoting secure information transmission.

[0035] Furthermore, since the satellite-terrestrial communication network includes two sections, namely, the section from the user to the base station and the section from the base station to the satellite, from the perspectives of optimal security and energy efficiency, designing two optimal power allocation schemes can improve the overall security and energy efficiency of the satellite-terrestrial communication network and promote secure information transmission.

[0036] FIG. 1 is a schematic diagram showing a satellite-terrestrial communication network system provided by an embodiment of the present invention.

[0037] As shown in FIG. 1, the satellite-terrestrial communication network includes a ground segment and a space segment, where the ground segment includes user terminals, base stations, and ground stations, and the space segment includes multiple satellites.

[0038] Here, each of the user terminals, a base station whose coverage area includes it, and an associated satellite are sequentially connected to form a communication link, and the associated satellite refers to a satellite that the base station selects to access and whose communication beam range can cover the base station. When a user terminal has data that requires uplink transmission, it selects one base station that covers it to establish a communication link, and the communication link is the section from the user to the base station, and the base station selects one satellite whose communication beam covers it to access it and establishes a communication link, and the communication link is the section from the base station to the satellite.

[0039] Inter-satellite links exist between multiple satellites in the space section of a satellite-terrestrial communications network for transmitting information, and ultimately, the uplink transmission data of a user terminal is transferred to a core network by transmitting it to a ground station.

[0040] Referring to FIG. 1, eavesdropping by malicious users may exist in both the section from the user to the base station and the section from the base station to the satellite. The system suppresses eavesdropping by adding a first artificial auxiliary noise power to the section from the user to the base station via the base station and a second artificial auxiliary noise power to the section from the base station to the satellite, and manages power allocation through a base station power management center.

[0041] In some embodiments, the power allocation method of the satellite-terrestrial communication network according to the embodiment of the present invention may be performed by, but is not limited to, a base station power management center. The power allocation method of the satellite-terrestrial communication network will be described in detail below.

[0042] FIG. 2 is a schematic diagram showing the flow of a power allocation method in a satellite-terrestrial communication network provided by an embodiment of the present invention.

[0043] In the embodiment shown in FIG. 2, the power allocation method for the satellite-terrestrial communication network may include, but is not limited to, steps 110a to 130b.

[0044] Step 110a: during uplink transmission by the user terminal, obtain current channel information of a section from the user to a base station of the satellite-terrestrial communication network, the current channel information of the section from the user to the base station includes the uplink transmission power of the user terminal. In this way, since the channel changes in real time, the current channel information is obtained to perform power allocation, thereby improving the real-time security of the channel.

[0045] The above user terminal may be a single user terminal or multiple user terminals, and may be an old user terminal that has been re-accessed after disconnection, or a new user terminal that has been accessed for the first time. As long as the user terminal accesses the channel and performs uplink transmission, it is included in the scope of protection of the embodiments of the present invention.

[0046] In some embodiments, the user-to-base station section is an uplink communication link established between a user terminal and the base station covering it, where the base station uses full-duplex mode to simultaneously collect the regular signal uploaded by the user terminal and transmit artificial auxiliary noise.

[0047] Step 120a: if it is determined that the section from the user to the base station satisfies the first secure communication condition, a first artificial auxiliary noise power to be allocated by the base station is determined based on current channel information of the section from the user to the base station.

[0048] Step 130a: adding a first artificial auxiliary noise power to a section from a user to a base station, and performing power allocation between the uplink transmission power of the user terminal and the first artificial auxiliary noise power.

[0049] Step 110b: obtaining current channel information for a section from a base station to a satellite in a satellite-terrestrial communication network;

[0050] In some embodiments, the base station to satellite section is an uplink communication link established between a base station accessed by a user terminal and the satellite it covers, in which the base station simultaneously transmits the received user terminal normal signal and an artificial auxiliary noise signal added to suppress eavesdropping.

[0051] Step 120b: if it is determined that the section from the base station to the satellite satisfies the second safe communication condition, based on the current channel information of the section from the base station to the satellite, determine the base station normal signal transmission power of the section from the base station to the satellite and the second artificial auxiliary noise power allocated by the base station.

[0052] The base station may be a base station that covers a user terminal and has established a connection with the user terminal.

[0053] The current channel information of the section from the user to the base station and the current channel information of the section from the base station to the satellite may both be the current channel information of the satellite-terrestrial communication network, which is also necessary information for secure transmission power allocation. The current channel information of the satellite-terrestrial communication network is the channel gain from the user terminal to the base station.

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[0054] In step 130b, the base station normal signal transmission power and the second artificial auxiliary noise power are added to the section from the base station to the satellite, and power allocation is performed using the base station normal signal transmission power and the second artificial auxiliary noise power, thereby finally realizing optimal power allocation between the section from the user to the base station and the section from the base station to the satellite.

[0055] In a first embodiment as shown in FIG. 2, the method of the embodiment of the present invention may sequentially perform steps 110a, 120a, 130a, 110b, 120b, and 130b.

[0056] Furthermore, during uplink transmission by the user terminal, in the section from the user to the base station, current channel information of the section from the user to the base station may be obtained, and an optimal power allocation scheme for the section from the user to the base station may be determined, and then the base station may collect the regular signal transmitted by the user terminal. After the legal signal arrives at the base station, when the base station communicates with the satellite, current channel information of the section from the base station to the satellite may be obtained, and an optimal power allocation scheme for the section from the base station to the satellite may be determined, and then the base station may transmit the regular signal transmitted by the user terminal.

[0057] In the embodiment shown in Fig. 2, due to the changing channel state, during uplink transmission by the user terminal, current channel information of the section from the user to the base station may be acquired, so as to improve the accuracy of the channel information acquisition, and more accurately obtain the first artificial auxiliary noise power, thereby suppressing eavesdropping by malicious users in the satellite-terrestrial communication network, and maximizing the uplink safety capacity of the section from the user to the base station. At the same time, current channel information of the section from the base station to the satellite may be acquired, so as to improve the accuracy of the base station to satellite acquisition, and more accurately obtain the second artificial auxiliary noise power, thereby finally suppressing eavesdropping by malicious users in the satellite-terrestrial communication network, and maximizing the uplink safety capacity of the section from the base station to the satellite.

[0058] Of course, the numbers of step 110a, step 120a, step 130a, step 110b, step 120b, and step 130b in FIG. 2 do not limit the order of the steps, and any embodiment that can use steps 110a to 130b is included in the scope of protection of the embodiments of the present invention.

[0059] Another second embodiment is similar to the embodiment shown in Fig. 2. Compared with the embodiment shown in Fig. 2, in another second embodiment, steps 110a and 110b may be performed in parallel, steps 120a and 120b may also be performed in parallel, and steps 130a and 130b may also be performed in parallel. In this way, the first artificial auxiliary noise power and the second artificial auxiliary noise power can be quickly obtained in parallel, which improves the efficiency of processing and to a certain extent improves the ability of suppressing eavesdropping by malicious users in the satellite-terrestrial communication network.

[0060] Another third embodiment is similar to the embodiment shown in Fig. 2. Compared with the embodiment shown in Fig. 2, in another third embodiment, three steps of step 110a, step 120a, and step 130a may be performed after three steps of step 110b, step 120b, and step 130b, and is not limited here. In this way, eavesdropping by malicious users in the satellite-terrestrial communication network can be suppressed to a certain extent.

[0061] FIG. 3 is a schematic diagram illustrating a flow of a power allocation method in a satellite-terrestrial communication network from a user to a base station provided by an embodiment of the present invention.

[0062] As shown in FIG. 3, in relation to FIG. 2 above, the above step 120a may further include the following step 210a, the above step 130a may further include the following step 310a, and the method further includes step 100a, step 111a, and step 410a, and the details are as follows:

[0063] Step 100a: Initialize parameters of the satellite-terrestrial communication network to obtain initialization parameters of the satellite-terrestrial communication network. The initialization parameters of the satellite-terrestrial communication network may include, but are not limited to, the maximum transmission power of the user terminal, the maximum transmission power of the base station, the signal bandwidth of the section from the user to the base station, the signal bandwidth of the section from the base station to the satellite, the noise power spectral density Nub0 of the receiving end of the base station, the residual interference coefficient of the receiving end of the satellite, the full-duplex self-interference channel gain of the base station, the number M of base stations served by each satellite, the initialization communication identifier of whether the section from the user to the base station meets a first safety communication condition, the initialization communication identifier of whether the section from the base station to the satellite meets a second safety communication condition, etc.

[0064] The current channel information from the user to the base station includes channel information transmitted by the user terminal and eavesdropper channel state information from the user to the base station.

[0065] The initialization parameters of the section from the user to the base station in the above-mentioned satellite-terrestrial communication network include full-duplex self-interference information of the base station, noise information of the receiving end of the base station, initialization parameters sent by the user terminal, and maximum transmission power of the base station, where the full-duplex self-interference information of the base station is the full-duplex self-interference channel gain of the base station

number

number

[0066] Step 111a: It is determined whether the section from the user to the base station satisfies a first secure communication condition.

[0067] The above step 111a may further include the following steps (1) and (2).

[0068] Step (1): determining a channel gain ratio auxiliary parameter for a section from a user to a base station. Step (2): determining whether the section from a user to a base station satisfies a first secure communication condition based on the channel gain ratio auxiliary parameter for the section from a user to a base station under a constraint of maximizing the safety capacity of the section from a user to a base station. Here, the physical layer safety capacity is used to reflect the transmission capacity of a channel, and the larger the safety capacity, the stronger the ability to transmit securely even in the face of eavesdropping interference.

[0069] The formula for calculating the upstream safety capacity from the user to the base station is:

number

[0070] Some parameters and functions in the formula are defined as follows:

number

number

number

number

[0071] Through the constraint of maximizing the safety capacity of the section from the user to the base station, the uplink safety capacity of the section from the user to the base station is calculated.

number

number

number

[0072] Where:

number

number

number

[0073] Here, the above step (1) may include the first step and the second step, but is not limited to these.

[0074] The first step is to determine a channel gain coefficient based on the eavesdropper's channel state information, the channel information transmitted by the user terminal, and the full-duplex self-interference information of the base station.

[0075] Here, the eavesdropper channel state information includes channel state information from the base station to the eavesdropper in the section from the user to the base station, and channel state information from the user terminal to the eavesdropper in the section from the user to the base station.

[0076] The first step may include, but is not limited to, step 1) and step 2). Step 1) determines a first channel gain ratio between a channel from the base station to the eavesdropper and a base station self-interference channel according to channel state information from the base station to the eavesdropper and full-duplex self-interference information of the base station.

[0077] Specifically, the first channel gain ratio is calculated by the following formula.

number

[0078] Step 2), based on the channel information transmitted by the user terminal and the channel state information from the user terminal to the eavesdropper, determine a second channel gain ratio between the channel from the user terminal to the base station and the channel from the user terminal to the eavesdropper.

[0079] Specifically, the second channel gain ratio is calculated by the following formula.

number

[0080] The second step above is to determine a transmission impact coefficient of the impact of noise interference on transmission based on the noise information of the receiving end of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal.

[0081] The second step may include, but is not limited to, step 3) and step 4).

[0082] Step 3), based on the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal and the initialization parameters transmitted by the user terminal, determine a first ratio between the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal and the initialization parameters transmitted by the user terminal, where the full-duplex self-interference information of the base station may include a full-duplex self-interference coefficient of the base station and a full-duplex self-interference channel gain of the base station, the initialization parameters transmitted by the user terminal include a maximum transmission power of the user terminal, and the channel information transmitted by the user terminal includes a channel gain from the user terminal to the base station.

[0083] Specifically, the first ratio is calculated by the following formula.

number

number

number

number

number

[0084] According to the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameters transmitted by the user terminal, determine a second ratio between the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameters transmitted by the user terminal, where the noise information of the receiving end of the base station may include a noise power spectral density of the receiving end of the base station, the channel information transmitted by the user terminal may include a channel gain from the user terminal to the base station, and the initialization parameters transmitted by the user terminal may include a signal bandwidth of the section from the user to the base station and a maximum transmission power of the user terminal.

[0085] Specifically, the second ratio is calculated by the following formula.

number

number

[0086] Next, the above step (2) may include, but is not limited to, a third step. In the third step, it is determined whether the section from the user to the base station satisfies the first safe communication condition based on whether the channel gain coefficient is greater than 1 and whether the maximum transmission power of the base station is greater than the transmission influence coefficient. Therefore, the channel gain coefficient is as large as possible and the transmission influence coefficient is as small as possible.

[0087] The third step may further include step 5), in which it is determined whether the section from the user to the base station satisfies the first secure communication condition by calculating whether the first channel gain ratio is greater than 1, whether the product of the first channel gain ratio and the second channel gain ratio is greater than 1, and whether the maximum transmission power of the base station is greater than the ratio between the first ratio adjusted by the second channel gain ratio and the second ratio adjusted by the first channel gain ratio and the second channel gain ratio.

[0088] The adjusted second ratio is obtained by adjusting the second ratio using the product of the first channel gain ratio and the second channel gain ratio, see condition c) below for details.

[0089] If the first channel gain ratio is not greater than 1, or if the product of the first channel gain ratio and the second channel gain ratio is not greater than 1, or if the maximum transmission power of the base station is not greater than the ratio between the first ratio adjusted by the second channel gain ratio and the second ratio adjusted by the first channel gain ratio and the second channel gain ratio, it is determined that the section from the user to the base station does not satisfy the first safe communication condition.

[0090] If the first channel gain ratio is greater than 1, the product of the first channel gain ratio and the second channel gain ratio is greater than 1, and the maximum transmission power of the base station is greater than the ratio between the first ratio adjusted by the second channel gain ratio and the second ratio adjusted by the first channel gain ratio and the second channel gain ratio, it is determined that the section from the user to the base station satisfies the first secure communication condition.

[0091] Specifically, the first channel gain ratio being greater than 1, the product of the first channel gain ratio and the second channel gain ratio being greater than 1, and the maximum transmission power of the base station being greater than the ratio between the first ratio adjusted by the second channel gain ratio and the second ratio adjusted by the first channel gain ratio and the second channel gain ratio can be expressed as follows:

number

number

number

number

[0092] If all three conditions a), b), and c) are met, it is determined that the section from the user to the base station satisfies the first secure communication condition, and the following step 210a is executed.

[0093] Step 210a: if it is determined that the section from the user to the base station satisfies a first safe communication condition, generate a first safe communication identifier, and determine a first artificial auxiliary noise power to be allocated by the base station based on current channel information of the section from the user to the base station, and the first safe communication identifier is used to identify that the section from the user to the base station is in a safe communication state.

[0094] The first safe communication identifier may include, but is not limited to, a first safe communication flag FLAG1 or other codes. Of course, the first safe communication flag FLAG1 may include, but is not limited to, any one or combination of alphabets, letters, and numbers.

[0095] The generating of the first secure communication identifier in the above step 210a may be achieved by various embodiments.

[0096] One embodiment of generating the first secure communication identifier in step 210a may include, but is not limited to, setting the communication identifier as the first secure communication identifier. Exemplarily, at the time of initialization, a flag FLAG1 indicating whether the first secure communication condition is satisfied is set to 0. If the section from the user to the base station satisfies the first secure communication condition, the flag FLAG1 is set to 1.

[0097] In another embodiment of generating the first secure communication identifier in the above step 210a, a secure communication identifier related to a section from the user to the base station that satisfies the first secure communication condition may be generated. Of course, it can be realized by other embodiments, all of which are within the scope of protection of the embodiments of the present invention, and will not be exemplified here.

[0098] In the above step 210a, determining the first artificial auxiliary noise power allocated by the base station based on the current channel information of the section from the user to the base station may include steps 1 and 2. Step 1: determining a power auxiliary parameter of the section from the user to the base station based on a channel gain ratio auxiliary parameter of the section from the user to the base station.

[0099] Specifically, the power assistance parameter for the section from the user to the base station is calculated using the following formula.

number

[0100] Where:

number

[0101] Step 2: determining a first artificial auxiliary noise power in the section from the user to the base station according to the power auxiliary parameter in the section from the user to the base station;

[0102] Specifically, the first artificial auxiliary noise power in the section from the user to the base station is calculated by the following formula:

number

[0103] Step 310a, add a first artificial auxiliary noise power to the uplink transmission power of the user terminal in the section from the user to the base station according to the first safety communication identifier, so that the first safety communication identifier can quickly determine whether the section from the user to the base station satisfies the first safety communication condition, improve the efficiency of obtaining the first artificial auxiliary noise power, and more efficiently suppress eavesdropping by malicious users in the satellite-terrestrial communication network, and maximize the uplink safety capacity of the section from the user to the base station.

[0104] Step 410a: When it is determined that the section from the user to the base station does not satisfy the first secure communication condition, the process returns to the execution of acquiring current channel information of the section from the user to the base station of the satellite-terrestrial communication network when a new user terminal performs uplink transmission or when the current user terminal performs uplink transmission again. In this way, when it is determined that the section from the user to the base station does not satisfy the first secure communication condition, the channel can be switched for re-access of the new user terminal or the current user terminal, which facilitates re-access of the new user terminal or the current user terminal and improves channel utilization efficiency.

[0105] Step 410a may further include initializing a communication identifier of the section from the user to the base station when it is determined that the section from the user to the base station does not satisfy the first safe communication condition. Exemplarily, a flag FLAG1 indicating whether the first safe communication condition is satisfied is set to 0.

[0106] In another embodiment, when it is determined that the section from the user to the base station does not satisfy the first secure communication condition, the communication flow for the user terminal is terminated.

[0107] FIG. 4 is a schematic diagram illustrating a flow of a power allocation method for a satellite-terrestrial communication network from a base station to a satellite provided according to an embodiment of the present invention.

[0108] As shown in Fig. 4, in relation to Fig. 2, the above step 120b may further include the following step 210b, and the above step 130b may further include the following step 310b. The method further includes step 100b, step 111b, and step 410b, and details are as follows:

[0109] Step 100b: initializing parameters of the satellite-terrestrial communication network to obtain the initialization parameters of the satellite-terrestrial communication network.

[0110] In step 111b, it is determined whether the section from the base station to the satellite satisfies a second safe communication condition.

[0111] The above step 111b further includes the following steps: <1> and Step <2> and

[0112] Steps <1> , determining a channel gain ratio auxiliary parameter for the section from the base station to the satellite. <2> Under the constraint of maximizing the safety capacity of the section from the base station to the satellite, it is determined whether the section from the base station to the satellite satisfies a second safety communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite.

[0113] The formula for calculating the upstream safety capacity from the base station to the satellite is as follows:

number

[0114] Here, some parameters and functions are

number

number

number

number

number

number

[0115] The upstream safety capacity of the section from the base station to the satellite is guaranteed through the constraint of maximizing the safety capacity of the section from the base station to the satellite.

[0116] Here, the above step <1> may include, but is not limited to, the first step and the second step.

[0117] The current channel information of the section from the base station to the satellite includes a channel gain from the base station to the satellite and channel state information from the base station to an eavesdropper in the section from the base station to the satellite, and the initialization parameters of the section from the base station to the satellite in the satellite-terrestrial communication network include noise information of the receiving end of the satellite, initialization parameters transmitted by the base station, and residual interference coefficients of the receiving end of the satellite.

[0118] The first step may include, but is not limited to, step 1> and step 2>.

[0119] Step 1>, based on the channel gain from the base station to the satellite and the channel state information from the base station to the eavesdropper in the section from the base station to the satellite, determine a third channel gain ratio between the channel from the base station to the satellite and the channel from the base station to the eavesdropper.

[0120] Specifically, the third channel gain ratio is calculated by the following formula.

number

number

number

[0121] Step 2>, based on the noise information of the receiving end of the satellite, the channel gain from the base station to the satellite and the initialization parameters transmitted by the base station, determine a third ratio between the noise of the receiving end of the satellite and the channel gain from the base station to the satellite and the initialization parameters transmitted by the base station. Here, the noise information of the receiving end of the satellite may include the noise power spectral density of the receiving end of the satellite. The initialization parameters transmitted by the base station include the maximum transmission power of the base station.

[0122] Specifically, the third ratio is calculated using the following formula.

number

number

[0123] Above steps <2> may include, but is not limited to, step 3>. Step 3>: calculate whether the sum of the third ratio adjusted by the third channel gain ratio and the residual interference coefficient at the receiving end of the satellite is smaller than 1, thereby determining whether the section from the base station to the satellite satisfies the second secure communication condition.

[0124] If the sum of the third ratio adjusted by the third channel gain ratio and the residual interference coefficient at the receiving end of the satellite is not less than 1, it is determined that the section from the base station to the satellite does not satisfy the second secure communication condition.

[0125] If the sum of the third ratio adjusted by the third channel gain ratio and the residual interference coefficient at the receiving end of the satellite is smaller than 1, it is determined that the section from the base station to the satellite satisfies the second secure communication condition.

[0126] The sum of the third ratio adjusted by the third channel gain ratio and the residual interference coefficient at the receiving end of the satellite is less than 1, specifically,

number

number

[0127] Step 210b: if it is determined that the section from the base station to the satellite satisfies the second safe communication condition, a second safe communication identifier is generated, and based on the current channel information of the section from the base station to the satellite, a base station normal signal transmission power of the section from the base station to the satellite and a second artificial auxiliary noise power allocated by the base station are determined, and the second safe communication identifier is used to identify that the section from the base station to the satellite is in a safe communication state.

[0128] The second safe communication identifier is similar to the first safe communication identifier, and the second safe communication identifier may include, but is not limited to, a second safe communication flag FLAG2 or other codes. Of course, the second safe communication flag FLAG2 may include, but is not limited to, any one or combination of alphabets, letters, and numbers.

[0129] The generating of the second secure communication identifier in step 210b above may be achieved by various embodiments.

[0130] In one embodiment of generating the second safe communication identifier in step 210b, generating the second safe communication identifier may include, but is not limited to, setting the communication identifier as the second safe communication identifier. Exemplarily, at the time of initialization, a flag FLAG2 indicating whether the second safe communication condition is satisfied is set to 0. If the section from the base station to the satellite satisfies the second safe communication condition, the flag FLAG2 is set to 1.

[0131] In another embodiment of generating the second secure communication identifier in the above step 210b, a secure communication identifier related to the section from the base station to the satellite that satisfies the second secure communication condition may be generated. Of course, it can be realized by other embodiments, all of which are within the scope of protection of the embodiments of the present invention, and will not be exemplified here.

[0132] In the above step 210b, determining the base station normal signal transmission power of the section from the base station to the satellite and the second artificial auxiliary noise power allocated by the base station based on the current channel information of the section from the base station to the satellite may include a first step and a second step. The first step is to determine a power auxiliary parameter of the section from the base station to the satellite based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite.

[0133] Specifically, the power assistance parameter for the section from the base station to the satellite is calculated using the following formula.

number

[0134] A second step is to determine a base station normal signal transmission power and a second artificial auxiliary noise power in the section from the base station to the satellite according to the power auxiliary parameter in the section from the base station to the satellite.

[0135] Specifically, the base station normal signal transmission power in the section from the base station to the satellite is calculated using the following formula.

number

[0136] Specifically, the second artificial auxiliary noise power is calculated by the following formula:

number

[0137] Step 310b, add the base station normal signal transmission power and the second artificial auxiliary noise power to the section from the base station to the satellite according to the second secure communication identifier, so that the second secure communication identifier can quickly determine whether the section from the base station to the satellite meets the second secure communication condition, improve the efficiency of obtaining the second artificial auxiliary noise power, suppress eavesdropping by malicious users in the satellite-terrestrial communication network in a more efficient manner, and maximize the upstream secure capacity of the section from the base station to the satellite.

[0138] Step 410b: if it is determined that the section from the base station to the satellite does not satisfy the second secure communication condition, when a new user terminal performs uplink transmission or the current user terminal performs uplink transmission again, the process returns to the execution of acquiring current channel information of the section from the base station to the satellite of the satellite-terrestrial communication network. In this way, if it is determined that the section from the base station to the satellite does not satisfy the second secure communication condition, the channel can be switched for re-access of the new user terminal or the current user terminal, which facilitates re-access of the new user terminal or the current user terminal and improves channel utilization efficiency.

[0139] Step 410b may further include initializing a communication identifier of the section from the base station to the satellite when it is determined that the section from the base station to the satellite does not satisfy the second safe communication condition. Exemplarily, a flag FLAG2 indicating whether the second safe communication condition is satisfied is set to 0.

[0140] In another embodiment, upon determining that the section from the base station to the satellite does not satisfy the second secure communication condition, the communication flow for the user terminal is terminated.

[0141] Based on the power allocation performed by the base station power management center, the base station distinguishes between the section from the user to the base station and the section from the base station to the satellite, and adds a first artificial auxiliary noise power to the power corresponding to the section from the user to the base station to suppress eavesdropping by malicious users, and adds a second artificial auxiliary noise power to the power corresponding to the section from the base station to the satellite to suppress eavesdropping by malicious users. When FLAG1 and FLAG2 are both 1, the uplink transmission power of the user terminal in the section from the user to the base station is set to 1 / f, which is the maximum transmission power of the user terminal.

number

number

number

number

[0142] The above two steps are combined to optimize the uplink power allocation of the satellite-terrestrial communication network, thereby optimizing the security performance of the satellite-terrestrial communication network. Otherwise, the user terminal is informed that no secure transmission is available and there is no optimal uplink power allocation scheme.

[0143] FIG. 5 is a schematic diagram illustrating the upstream safety capacity performance of a satellite-terrestrial communication network provided by an embodiment of the present invention.

[0144] With reference to Figures 1 and 5, the satellites in Figure 1 are placed in a 500 km orbit and the bandwidth of the ground network is

number

number

number

number

number

number

number

[0145] 6 is a schematic diagram showing modules of a power allocation device in a satellite-terrestrial communication network provided according to an embodiment of the present invention. The power allocation device in the satellite-terrestrial communication network includes: An information collection module 61 for a section from a user to a base station for acquiring current channel information of a section from a user to a base station of a satellite-terrestrial communication network during uplink transmission by a user terminal, the current channel information of the section from the user to the base station including an uplink transmission power of the user terminal; a power determination module 62 for a section from the user to the base station, for determining a first artificial auxiliary noise power allocated by the base station according to current channel information of the section from the user to the base station when the section from the user to the base station determines that the section satisfies a first safe communication condition; a power allocation module 63 for a section from the user to the base station, for adding a first artificial auxiliary noise power to the section from the user to the base station, and performing power allocation between the uplink transmission power of the user terminal and the first artificial auxiliary noise power; a base station to satellite section information collection module 64 for obtaining current channel information of the base station to satellite section of the satellite-terrestrial communication network; a power determination module 65 for a section from the base station to the satellite, for determining a base station normal signal transmission power for the section from the base station to the satellite and a second artificial auxiliary noise power allocated by the base station according to current channel information for the section from the base station to the satellite when it is determined that the section from the base station to the satellite satisfies a second safe communication condition; and a power allocation module 66 for the section from the base station to the satellite for applying the base station normal signal transmission power and the second artificial auxiliary noise power to the section from the base station to the satellite and performing power allocation between the base station normal signal transmission power and the second artificial auxiliary noise power.

[0146] In some embodiments, the power determination module 62 of the user-to-base station section is further used to generate a first safety communication identifier when the user-to-base station section determines that the first safety communication condition is satisfied, and the first safety communication identifier is used to identify that the user-to-base station section is in a safe communication state; The user-to-base station section power allocation module 63 is specifically used for adding a first artificial auxiliary noise power to the user-to-base station section based on the first secure communication identifier.

[0147] In some embodiments, the device further includes a first secure communication condition determination module for determining whether a section from the user to the base station satisfies a first secure communication condition, and the first secure communication condition determination module includes a first channel gain ratio auxiliary parameter submodule and a first secure communication condition determination submodule; The first channel gain ratio auxiliary parameter submodule is used for determining a channel gain ratio auxiliary parameter of an interval from a user to a base station; The first safe communication condition determination submodule is used to determine that the section from the user to the base station satisfies the first safe communication condition based on a channel gain ratio auxiliary parameter of the section from the user to the base station under the constraint of maximizing the safety capacity of the section from the user to the base station.

[0148] In some embodiments, the current channel information of the section from the user to the base station further includes channel information transmitted by the user terminal and a first eavesdropper channel state information; The initialization parameters of the section from the user to the base station in the satellite-terrestrial communication network include full-duplex self-interference information of the base station, noise information of the receiving end of the base station, initialization parameters transmitted by the user terminal, and maximum transmission power of the base station; The first channel gain ratio auxiliary parameter submodule includes: a channel gain coefficient determining unit and a transmission influence coefficient determining unit; The channel gain coefficient determining unit is used to determine a channel gain coefficient according to the first eavesdropper channel state information, the channel information transmitted by the user terminal, and the full-duplex self-interference information of the base station; The transmission influence coefficient determining unit is used to determine a transmission influence coefficient of the influence that noise interference has on transmission according to the noise information of the receiving end of the base station, the channel information sent by the user terminal, and the initialization parameters sent by the user terminal; The first safe communication condition judgment submodule includes a first safe communication condition judgment unit; The first safe communication condition judgment unit is used to judge that the section from the user to the base station satisfies the first safe communication condition based on the channel gain coefficient being greater than 1 and the maximum transmission power of the base station being greater than the transmission influence coefficient.

[0149] In some embodiments, the first eavesdropper channel state information includes: channel state information from the base station to the eavesdropper in a section from the user to the base station; and channel state information from the user terminal to the eavesdropper in a section from the user to the base station; The channel gain coefficient determining unit specifically includes: Determine a first channel gain ratio between a channel from the base station to the eavesdropper and a base station self-interference channel according to channel state information from the base station to the eavesdropper in a section from the user to the base station and full-duplex self-interference information of the base station; is used to determine a second channel gain ratio between a channel from the user terminal to the base station and a channel from the user terminal to the eavesdropper based on the channel information transmitted by the user terminal and the channel state information from the user terminal to the base station in a section from the user to the base station; The transmission influence coefficient determining unit specifically includes: Determine, based on the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal, a first ratio between the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal; According to the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameter transmitted by the user terminal, a second ratio is determined between the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameter transmitted by the user terminal; The first secure communication condition judgment unit is specifically used for determining that the first channel gain ratio is greater than 1, the product of the first channel gain ratio and the second channel gain ratio is greater than 1, and the maximum transmission power of the base station is greater than the ratio between the first ratio adjusted by the second channel gain ratio and the second ratio adjusted by the first channel gain ratio and the second channel gain ratio.

[0150] In some embodiments, the power determination module 62 of the user-to-base station section is specifically used for determining a power auxiliary parameter of the user-to-base station section based on the channel gain ratio auxiliary parameter of the user-to-base station section, and for determining a first artificial auxiliary noise power of the user-to-base station section based on the power auxiliary parameter of the user-to-base station section.

[0151] In some embodiments, the base station-to-satellite section power determination module 65 is further used to generate a second safe communication identifier when the base station-to-satellite section determines that the base station-to-satellite section satisfies a second safe communication condition, and the second safe communication identifier is used to identify that the base station-to-satellite section is in a safe communication state; The base station to satellite section power allocation module 66 is specifically used for adding the base station normal signal transmission power and the second artificial auxiliary noise power to the base station to satellite section based on the second secure communication identifier.

[0152] In some embodiments, the apparatus further includes a second safety communication condition determination module for determining whether the section from the base station to the satellite satisfies a second safety communication condition, the second safety communication condition determination module including: a second channel gain ratio auxiliary parameter sub-module; and a second safety communication condition determination sub-module; The second channel gain ratio auxiliary parameter submodule is used for determining a channel gain ratio auxiliary parameter of a section from the base station to the satellite; The second safety communication condition determination submodule is used to determine that the section from the base station to the satellite satisfies a second safety communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite under the constraint of maximizing the safety capacity of the section from the base station to the satellite.

[0153] In some embodiments, the current channel information of the section from the base station to the satellite includes a channel gain from the base station to the satellite and a second eavesdropper channel state information, and the second eavesdropper channel state information includes channel state information from the base station to the eavesdropper of the section from the base station to the satellite; The initialization parameters of the section from the base station to the satellite in the satellite-terrestrial communication network include noise information of the receiving end of the satellite, the initialization parameters transmitted by the base station, and the residual interference coefficient of the receiving end of the satellite; The second channel gain ratio auxiliary parameter submodule specifically includes: determining a third channel gain ratio between the base station-to-satellite channel and the base station-to-eavesdropper channel in a section from the base station to the satellite based on the channel gain from the base station to the satellite and the second eavesdropper channel state information; Based on the noise information of the receiving end of the satellite, the channel gain from the base station to the satellite, and the initialization parameter transmitted by the base station, a third ratio of the noise of the receiving end of the satellite to the channel gain from the base station to the satellite and the initialization parameter transmitted by the base station is determined; The second safe communication condition judgment sub-module includes a second safe communication condition judgment unit; The second safe communication condition judgment unit is used for judging whether the sum of the third ratio adjusted by the third channel gain ratio and the residual interference coefficient at the receiving end of the satellite is less than one.

[0154] In some embodiments, the base station-to-satellite section power determination module 65 is specifically used for determining a power auxiliary parameter of the base station-to-satellite section based on the channel gain ratio auxiliary parameter of the base station-to-satellite section, and for determining a base station normal signal transmission power and a second artificial auxiliary noise power of the base station-to-satellite section based on the power auxiliary parameter of the base station-to-satellite section.

[0155] In some embodiments, the power allocation device of the satellite-terrestrial communication network further includes a first access decision module, which is used to trigger the information collection module 61 of the section from the user to the base station when it is determined that the section from the user to the base station does not satisfy the first safety communication condition, so as to return to the execution of obtaining current channel information of the section from the user to the base station of the satellite-terrestrial communication network when a new user terminal performs an uplink transmission or when the current user terminal performs an uplink transmission again.

[0156] In some embodiments, the power allocation device of the satellite-terrestrial communication network further includes a second access decision module, which is used to trigger the information collection module 64 of the section from the base station to the satellite to return to the execution of obtaining current channel information of the section from the base station to the satellite of the satellite-terrestrial communication network when it is determined that the section from the base station to the satellite does not satisfy the second safety communication condition, when a new user terminal performs an uplink transmission or when the current user terminal performs an uplink transmission again.

[0157] According to the present invention, there is provided a base station power management centre, which includes the above-mentioned apparatus.

[0158] FIG. 7 is a block diagram illustrating modules of a base station power management center provided according to an embodiment of the present invention.

[0159] As shown in FIG. 7, a base station power management center 70 includes one or more processors 71 for implementing the above-mentioned power allocation method for a satellite-terrestrial communication network.

[0160] In some embodiments, the base station power management center 70 may include a computer-readable storage medium 79, which may store a program that may be called by the processor 71, and may include a non-volatile storage medium. In some embodiments, the base station power management center 70 may include a memory 78 and an interface 77. In some embodiments, the base station power management center 70 may further include other hardware depending on the actual application.

[0161] The present invention may take the form of a computer program product embodied on one or more computer readable storage media 79 (including, but not limited to, disk memory, CD-ROM, optical memory, etc.) that contain program code therein. The computer readable storage media 79 include non-volatile and volatile media, movable and non-movable media, and may implement information storage by any method or technology. The information may be computer readable instructions, data structures, program modules, or other data. The computer readable storage media 79 include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassette tape, magnetic tape magnetic disk storage or other magnetic storage device, or any other non-transmission medium that may be used to store information accessible by a computing device.

[0162] The above are only preferred embodiments of the present invention, and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0163] Additionally, the terms "comprise", "contain" or any other variations thereof are intended to include a non-exclusive inclusion, whereby a process, method, article, or device that comprises a set of elements not only includes those elements, but also includes other elements not expressly listed or includes the inherent elements of such process, method, article, or device. Absent more limitations, an element qualified by the phrase "comprises a..." does not exclude the presence of further identical elements in a process, method, article, or device that includes said element.

Claims

1. During an uplink transmission by a user terminal, obtaining current channel information of a section from a user to a base station of a satellite-terrestrial communication network, the current channel information of the section from the user to the base station including an uplink transmission power of the user terminal; When it is determined that the section from the user to the base station satisfies a first secure communication condition, determining a first artificial auxiliary noise power to be allocated by the base station based on current channel information of the section from the user to the base station; adding the first artificial auxiliary noise power to a section from the user to a base station, and performing power allocation using an uplink transmission power of the user terminal and the first artificial auxiliary noise power; obtaining current channel information of a section from a base station to a satellite of the satellite-to-terrestrial communication network; determining, when it is determined that the section from the base station to the satellite satisfies a second safe communication condition, a base station normal signal transmission power for the section from the base station to the satellite and a second artificial auxiliary noise power to be allocated by the base station based on current channel information for the section from the base station to the satellite; adding the base station normal signal transmission power and the second artificial auxiliary noise power to a section from the base station to a satellite, and performing power allocation using the base station normal signal transmission power and the second artificial auxiliary noise power. A power allocation method for a satellite-terrestrial communications network comprising:

2. When it is determined that the section from the user to the base station satisfies a first secure communication condition, generating a first secure communication identifier, the first secure communication identifier being used to identify that a section from the user to a base station is in a secure communication state; Adding the first artificial auxiliary noise power to a section from the user to a base station comprises: adding the first artificial auxiliary noise power to a section from the user to a base station based on the first secure communication identifier.

2. The method of claim 1, wherein the power allocation in a satellite-terrestrial communications network is

3. Determining that the section from the user to the base station satisfies the first secure communication condition includes: determining a channel gain ratio auxiliary parameter for a section from the user to a base station; determining that the section from the user to the base station satisfies a first safety communication condition based on a channel gain ratio auxiliary parameter of the section from the user to the base station under a constraint condition of maximizing a safety capacity of the section from the user to the base station; 2. The method of claim 1, wherein the power allocation in a satellite-terrestrial communications network is

4. The current channel information of the section from the user to the base station further includes channel information transmitted by the user terminal and first eavesdropper channel state information; The initialization parameters of the section from the user to the base station in the satellite-terrestrial communication network include full-duplex self-interference information of the base station, noise information of the receiving end of the base station, initialization parameters transmitted by the user terminal, and maximum transmission power of the base station; Determining a channel gain ratio auxiliary parameter from the user to the base station includes: determining a channel gain coefficient based on the first eavesdropper channel state information, channel information transmitted by the user terminal, and full-duplex self-interference information of the base station; According to the noise information of the receiving end of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal, determining a transmission influence coefficient of an influence of noise interference on transmission; Determining that the section from the user to the base station satisfies a first secure communication condition includes: determining that a section from the user to a base station satisfies a first safe communication condition based on the channel gain coefficient being greater than 1 and the maximum transmission power of the base station being greater than the transmission influence coefficient; 4. The method of claim 3, wherein the power allocation in a satellite-terrestrial communications network is

5. The first eavesdropper channel state information includes channel state information from a base station to an eavesdropper in a section from the user to the base station, and channel state information from a user terminal to an eavesdropper in a section from the user to the base station, Determining a channel gain coefficient based on the first eavesdropper channel state information, channel information transmitted by the user terminal, and full-duplex self-interference information of the base station includes: determining a first channel gain ratio between a channel from the base station to the eavesdropper and a base station self-interference channel based on channel state information from the base station to the eavesdropper in a section from the user to the base station and full-duplex self-interference information of the base station; determining a second channel gain ratio between a channel from the user terminal to the base station and a channel from the user terminal to the eavesdropper based on channel information transmitted by the user terminal and channel state information from the user terminal to the base station in a section from the user to the base station; Determining a transmission influence coefficient of an influence of noise interference on transmission based on noise information of a receiving end of the base station, channel information transmitted by the user terminal, and initialization parameters transmitted by the user terminal, includes: determining, based on the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal, a first ratio between the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal; According to the noise information of the receiving end of the base station, the channel information transmitted by the user terminal, and the initialization parameter transmitted by the user terminal, determining a second ratio between the noise information of the receiving end of the base station, the channel information transmitted by the user terminal, and the initialization parameter transmitted by the user terminal; Determining that the section from the user to the base station satisfies a first safe communication condition based on the channel gain coefficient being greater than 1 and the maximum transmission power of the base station being greater than the transmission influence coefficient, determining that the first channel gain ratio is greater than 1, a product of the first channel gain ratio and the second channel gain ratio is greater than 1, and a maximum transmit power of the base station is greater than a ratio of a first ratio adjusted by the second channel gain ratio and a second ratio adjusted by the first channel gain ratio and the second channel gain ratio.

5. The method of claim 4, wherein the power allocation in a satellite-terrestrial communications network is

6. Determining a first artificial auxiliary noise power allocated by the base station based on current channel information of a section from the user to the base station includes: determining a power auxiliary parameter from the user to the base station based on a channel gain ratio auxiliary parameter from the user to the base station; determining the first artificial auxiliary noise power for a section from the user to a base station based on a power auxiliary parameter for the section from the user to a base station; 4. The method of claim 3, wherein the power allocation in a satellite-terrestrial communications network is

7. If it is determined that the section from the base station to the satellite satisfies a second safe communication condition, generating a second safety communication identifier, the second safety communication identifier being used to identify that a section from the base station to a satellite is in a safety communication state; adding the base station normal signal transmission power and the second artificial auxiliary noise power to a section from the base station to a satellite, adding the base station normal signal transmission power and the second artificial auxiliary noise power to a section from the base station to a satellite based on the second secure communication identifier.

2. The method of claim 1, wherein the power allocation in a satellite-terrestrial communications network is

8. Determining that the section from the base station to the satellite satisfies the second safe communication condition includes: determining a channel gain ratio auxiliary parameter for a section from the base station to a satellite; determining that the section from the base station to the satellite satisfies the second secure communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite under a constraint of maximizing a secure capacity of the section from the base station to the satellite; 2. The method of claim 1, wherein the power allocation in a satellite-terrestrial communications network is

9. The current channel information of the section from the base station to the satellite includes a channel gain from the base station to the satellite and a second eavesdropper channel state information, and the second eavesdropper channel state information includes channel state information from the base station to the eavesdropper in the section from the base station to the satellite; The initialization parameters of the section from the base station to the satellite in the satellite-terrestrial communication network include noise information of the receiving end of the satellite, initialization parameters transmitted by the base station, and residual interference coefficients of the receiving end of the satellite; Determining a channel gain ratio auxiliary parameter for a base station to a satellite section comprises: determining a third channel gain ratio between the base station-to-satellite channel and the base station-to-eavesdropper channel for a section from the base station to the satellite based on the base station-to-satellite channel gain and the second eavesdropper channel state information; and determining a third ratio between the noise at the receiving end of the satellite, the channel gain from the base station to the satellite, and the initialization parameter transmitted by the base station, based on the noise information at the receiving end of the satellite, and the channel gain from the base station to the satellite and the initialization parameter transmitted by the base station; Determining that the section from the base station to the satellite satisfies the second secure communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite, determining that a sum of a third ratio adjusted by the third channel gain ratio and a residual interference coefficient at a receiving end of the satellite is less than 1; 9. The method of claim 8, wherein the power allocation in a satellite-terrestrial communications network is

10. Determining a base station normal signal transmission power of the section from the base station to the satellite and the second artificial auxiliary noise power allocated by the base station based on current channel information of the section from the base station to the satellite, determining a power auxiliary parameter for the base station to satellite based on a channel gain ratio auxiliary parameter for the base station to satellite; determining a base station normal signal transmit power for the base station-to-satellite section and the second artificial auxiliary noise power based on a power auxiliary parameter for the base station-to-satellite section; 10. The method of claim 9, wherein the power allocation in a satellite-terrestrial communications network is

11. and returning to the execution of acquiring current channel information of the section from the user to the base station of the satellite-terrestrial communication network when it is determined that the section from the user to the base station does not satisfy the first safe communication condition, when a new user terminal performs uplink transmission or when the current user terminal performs uplink transmission again.

2. The method of claim 1, wherein the power allocation in a satellite-terrestrial communications network is

12. and returning to the execution of acquiring current channel information of the section from the base station to the satellite of the satellite-terrestrial communication network when it is determined that the section from the base station to the satellite does not satisfy the second safe communication condition, when a new user terminal performs uplink transmission or when the current user terminal performs uplink transmission again.

2. The method of claim 1, wherein the power allocation in a satellite-terrestrial communications network is

13. An information collection module for a section from a user to a base station for acquiring current channel information of a section from a user to a base station of a satellite-terrestrial communication network during uplink transmission by a user terminal, the current channel information of the section from the user to the base station including an uplink transmission power of the user terminal; a power determination module of the section from the user to the base station, for determining a first artificial auxiliary noise power allocated by the base station according to current channel information of the section from the user to the base station when it is determined that the section from the user to the base station satisfies a first secure communication condition; a power allocation module for a section from the user to the base station, for adding the first artificial auxiliary noise power to a section from the user to the base station, and performing power allocation between the uplink transmission power of the user terminal and the first artificial auxiliary noise power; an information collection module for acquiring current channel information of a section from a base station to a satellite of the satellite-terrestrial communication network; a power determination module for a section from the base station to the satellite, for determining a base station normal signal transmission power for the section from the base station to the satellite and a second artificial auxiliary noise power allocated by the base station according to current channel information for the section from the base station to the satellite when it is determined that the section from the base station to the satellite satisfies a second secure communication condition; and a power allocation module for a section from the base station to the satellite, for applying the base station normal signal transmission power and the second artificial auxiliary noise power to a section from the base station to the satellite, and performing power allocation using the base station normal signal transmission power and the second artificial auxiliary noise power. A power allocation device for a satellite-terrestrial communication network.

14. The power determination module of the section from the user to the base station is further used to generate a first safety communication identifier when it is determined that the section from the user to the base station satisfies a first safety communication condition, and the first safety communication identifier is used to identify that the section from the user to the base station is in a safe communication state; The power allocation module of the section from the user to the base station is specifically used for adding the first artificial auxiliary noise power to the section from the user to the base station according to the first secure communication identifier; A power allocation device for a satellite-terrestrial communications network according to claim 13.

15. The method further includes a first secure communication condition determination module for determining whether a section from the user to a base station satisfies the first secure communication condition, the first secure communication condition determination module including a first channel gain ratio auxiliary parameter submodule and a first secure communication condition determination submodule; The first channel gain ratio auxiliary parameter submodule is used to determine a channel gain ratio auxiliary parameter of a section from the user to a base station; The first safety communication condition determination submodule is used to determine that the section from the user to the base station satisfies a first safety communication condition based on a channel gain ratio auxiliary parameter of the section from the user to the base station under a constraint condition of maximizing a safety capacity of the section from the user to the base station.

2. A power allocation device for a satellite-terrestrial communications network according to claim 1.

16. The current channel information of the section from the user to the base station further includes channel information transmitted by the user terminal and first eavesdropper channel state information; The initialization parameters of the section from the user to the base station in the satellite-terrestrial communication network include full-duplex self-interference information of the base station, noise information of the receiving end of the base station, initialization parameters transmitted by the user terminal, and maximum transmission power of the base station; The first channel gain ratio auxiliary parameter submodule includes: a channel gain coefficient determining unit; and a transmission influence coefficient determining unit; The channel gain coefficient determining unit is used to determine a channel gain coefficient according to the first eavesdropper channel state information, the channel information transmitted by the user terminal, and the full-duplex self-interference information of the base station; The transmission influence coefficient determining unit is used to determine a transmission influence coefficient of the influence of noise interference on transmission according to noise information of a receiving end of the base station, channel information transmitted by the user terminal, and initialization parameters transmitted by the user terminal; The first secure communication condition judgment sub-module includes a first secure communication condition judgment unit; the first safe communication condition judgment unit is used to judge that the section from the user to the base station satisfies a first safe communication condition based on the channel gain coefficient being greater than 1 and the maximum transmission power of the base station being greater than the transmission influence coefficient; A power allocation device for a satellite-terrestrial communications network according to claim 15.

17. The first eavesdropper channel state information includes channel state information from a base station to an eavesdropper in a section from the user to the base station, and channel state information from a user terminal to an eavesdropper in a section from the user to the base station, The channel gain coefficient determining unit specifically includes: Determine a first channel gain ratio between a channel from the base station to the eavesdropper and a base station self-interference channel based on channel state information from the base station to the eavesdropper in a section from the user to the base station and full-duplex self-interference information of the base station; is used to determine a second channel gain ratio between a channel from the user terminal to the base station and a channel from the user terminal to the eavesdropper based on channel information transmitted by the user terminal and channel state information from the user terminal to the base station in a section from the user to the base station; The transmission influence coefficient determining unit specifically includes: Determine a first ratio between the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal, based on the full-duplex self-interference information of the base station, the channel information transmitted by the user terminal, and the initialization parameters transmitted by the user terminal; According to the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameter transmitted by the user terminal, a second ratio is determined between the noise information of the receiving end of the base station, the channel information transmitted by the user terminal and the initialization parameter transmitted by the user terminal; The first secure communication condition judgment unit is specifically used for judging that the first channel gain ratio is greater than 1, the product of the first channel gain ratio and the second channel gain ratio is greater than 1, and the maximum transmission power of the base station is greater than a ratio between a first ratio adjusted by the second channel gain ratio and a second ratio adjusted by the first channel gain ratio and the second channel gain ratio; 17. A power allocation device for a satellite-terrestrial communications network according to claim 16.

18. The power determination module of the user-to-base station is specifically used for determining a power auxiliary parameter of the user-to-base station section according to a channel gain ratio auxiliary parameter of the user-to-base station section, and determining the first artificial auxiliary noise power of the user-to-base station section according to the power auxiliary parameter of the user-to-base station section. A power allocation device for a satellite-terrestrial communications network according to claim 15.

19. the power determination module of the section from the base station to the satellite is further used to generate a second safe communication identifier when it is determined that the section from the base station to the satellite satisfies a second safe communication condition, and the second safe communication identifier is used to identify that the section from the base station to the satellite is in a safe communication state; The power allocation module of the section from the base station to the satellite is specifically used for adding the base station normal signal transmission power and the second artificial auxiliary noise power to the section from the base station to the satellite according to the second secure communication identifier; A power allocation device for a satellite-terrestrial communications network according to claim 13.

20. The method further includes a second secure communication condition determination module for determining whether a section from the base station to a satellite satisfies the second secure communication condition, the second secure communication condition determination module including a second channel gain ratio auxiliary parameter submodule and a second secure communication condition determination submodule; the second channel gain ratio auxiliary parameter submodule is used to determine a channel gain ratio auxiliary parameter of a section from the base station to a satellite; the second safety communication condition determination submodule is used to determine whether the section from the base station to the satellite satisfies the second safety communication condition based on a channel gain ratio auxiliary parameter of the section from the base station to the satellite under a constraint condition of maximizing a safety capacity of the section from the base station to the satellite; A power allocation device for a satellite-terrestrial communications network according to claim 13.

21. The current channel information of the section from the base station to the satellite includes a channel gain from the base station to the satellite and a second eavesdropper channel state information, and the second eavesdropper channel state information includes channel state information from the base station to the eavesdropper in the section from the base station to the satellite; The initialization parameters of the section from the base station to the satellite in the satellite-terrestrial communication network include noise information of the receiving end of the satellite, initialization parameters transmitted by the base station, and residual interference coefficients of the receiving end of the satellite; The second channel gain ratio auxiliary parameter submodule specifically includes: determining a third channel gain ratio between the base station-to-satellite channel and the base station-to-eavesdropper channel in a section from the base station to the satellite based on the base station-to-satellite channel gain and the second eavesdropper channel state information; Based on the noise information of the receiving end of the satellite, the channel gain from the base station to the satellite, and the initialization parameter transmitted by the base station, a third ratio of the noise of the receiving end of the satellite to the channel gain from the base station to the satellite and the initialization parameter transmitted by the base station is determined; The second secure communication condition judgment sub-module includes a second secure communication condition judgment unit; the second safety communication condition judgment unit is used for judging whether a sum of a third ratio adjusted by the third channel gain ratio and a residual interference coefficient at a receiving end of a satellite is smaller than 1; A power allocation device for a satellite-terrestrial communications network according to claim 20.

22. The base station to satellite section power determination module is specifically used for determining a power auxiliary parameter of the base station to satellite section according to a channel gain ratio auxiliary parameter of the base station to satellite section, and determining a base station normal signal transmission power of the base station to satellite section and the second artificial auxiliary noise power according to the power auxiliary parameter of the base station to satellite section. A power allocation device for a satellite-terrestrial communications network according to claim 21.

23. further comprising a first access decision module; When the first access decision module determines that the section from the user to the base station does not satisfy the first safety communication condition, when a new user terminal performs uplink transmission or when the current user terminal performs uplink transmission again, the first access decision module is used to trigger an information collection module of the section from the user to the base station, so as to return to the execution of obtaining current channel information of the section from the user to the base station of the satellite-terrestrial communication network; A power allocation device for a satellite-terrestrial communications network according to claim 13.

24. further comprising a second access decision module; When the second access decision module determines that the section from the base station to the satellite does not satisfy the second safety communication condition, when a new user terminal performs an uplink transmission or when a current user terminal performs an uplink transmission again, the second access decision module is used to trigger an information collection module of the section from the base station to the satellite, so as to return to the execution of obtaining current channel information of the section from the base station to the satellite of the satellite-terrestrial communication network. A power allocation device for a satellite-terrestrial communications network according to claim 13.

25. A device comprising the device according to any one of claims 13 to 24. Base station power management center.

26. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, perform the method of any one of claims 1 to 12. A computer-readable storage medium comprising:

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