A transmission configuration method and device of an air-ground integrated network and a storage medium

Abstract

The application provides a transmission configuration method and device of an air-ground integrated network and a storage medium, relates to the technical field of communication, and is used for relieving cross-link interference of the air-ground integrated network and improving the spectral efficiency of a system. The method comprises the following steps: a first functional relationship between the throughput of the air-ground integrated network and a transmission configuration parameter combination is constructed. The transmission configuration parameter combination comprises the following parameters: the downlink transmission power of a high-altitude base station on an almost blank subframe, the proportion of the almost blank subframe in a scheduling period, the proportion of a first normal subframe in the scheduling period, and the proportion of a second normal subframe in the scheduling period. The first functional relationship is solved to maximize the spectral efficiency of the air-ground integrated network, and the optimal value of each parameter in the transmission configuration parameter combination is determined.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, and in particular to a transmission configuration method and device for an air-ground integrated network and a storage medium. BACKGROUND

[0002] With the large-scale coverage of 5G, the academic and industrial circles have begun to research and explore the next generation of mobile communication technology. As an important potential application background and development direction of 5G, wide-area coverage has received extensive attention from the industry in recent years. Wide-area coverage requires the establishment of a seamless three-dimensional global coverage network. In this context, there are still more than 3 billion people without basic Internet access worldwide, most of whom are distributed in rural and remote areas. The high cost of building a ground communication network makes it difficult for telecommunications operators to bear. At the same time, the communication needs of uninhabited areas and oceanic areas, such as high-speed communication for Antarctic scientific expeditions and broadband access for ocean-going cargo ships, cannot be met by deploying ground networks.

[0003] To address the above problems, an air-ground integrated network as a new network architecture can break through the surface limit, achieve wide-area coverage, high-speed transmission, and heterogeneous interconnection, thereby realizing wide-area wireless coverage and fast communication services in large space-time scales, and providing a solution for the wide-area coverage requirements of 5G. The architecture of the air-ground integrated network mainly consists of two parts: (1) air-based network: mainly composed of high-altitude platform stations (HAPS). (2) ground-based network: the ground-based network is mainly composed of different types of ground communication base stations and communication equipment, intelligent terminals and sensors, such as Internet of Things sensors and mobile terminals.

[0004] In the above network architecture, when one party of the HAPS and the ground communication transmits uplink, it will cause interference to the downlink reception of the other party, i.e., cross-link interference, which in turn leads to a decrease in the overall system spectral efficiency. How to alleviate the cross-link interference and improve the system spectral efficiency is a problem to be solved. SUMMARY

[0005] The embodiments of the present application provide a transmission configuration method and device for an air-ground integrated network and a storage medium, which are used to alleviate the cross-link interference of the air-ground integrated network and improve the spectral efficiency of the system.

[0006] In a first aspect, a transmission configuration method of an air-ground integrated network is provided, the air-ground integrated network comprising at least one high-altitude base station and at least one ground base station, and the method comprising: constructing a first function relationship between a throughput of the air-ground integrated network and a transmission configuration parameter combination; wherein the transmission configuration parameter combination comprises the following parameters: a downlink transmission power of the high-altitude base station on an almost blank subframe, a proportion of the almost blank subframe in a scheduling period, a proportion of a first normal subframe in the scheduling period, and a proportion of a second normal subframe in the scheduling period; the sum of the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period is equal to 1; the first normal subframe is a normal subframe for uplink service, and the second normal subframe is a normal subframe for downlink service; and solving the first function relationship to determine optimal values of the parameters in the transmission configuration parameter combination, with a target of maximizing the throughput of the air-ground integrated network.

[0007] The technical scheme provided by the embodiments of the present application at least brings the following beneficial effects: by constructing a first function relationship between a throughput of the air-ground integrated network and a transmission configuration parameter combination, and solving the first function relationship to determine optimal values of the parameters in the transmission configuration, with a target of maximizing the frequency efficiency, the problem of reduced frequency spectrum efficiency caused by cross-link interference in the air-ground integrated network is solved, and the working efficiency of the air-ground integrated network is improved.

[0008] As a possible implementation manner, the throughput of the air-ground integrated network is equal to the sum of the throughput of the at least one high-altitude base station and the throughput of the at least one ground base station in the air-ground integrated network.

[0009] As a possible implementation manner, the throughput of the high-altitude base station is determined according to the frequency spectrum efficiency of a first link of the high-altitude base station, the frequency spectrum efficiency of a second link of the high-altitude base station, the frequency spectrum efficiency of a third link of the high-altitude base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the first link is a link established by a terminal and the high-altitude base station for uplink service transmission on the first normal subframe, the second link is a link established by the terminal and the high-altitude base station for downlink service transmission on the second normal subframe, and the third link is a link established by the terminal and the high-altitude base station for downlink service transmission on the almost blank subframe; and the frequency spectrum efficiency of the third link is determined according to the downlink transmission power of the high-altitude base station on the almost blank subframe.

[0010] As a possible implementation manner, the throughput of the ground base station is determined according to a spectrum efficiency of a fourth link of the ground base station, a spectrum efficiency of a fifth link of the ground base station, a spectrum efficiency of a sixth link of the ground base station, a spectrum efficiency of a seventh link of the ground base station, a proportion of the almost blank subframe in the scheduling period, a proportion of the first normal subframe in the scheduling period, and a proportion of the second normal subframe in the scheduling period; the fourth link is a link established by the terminal and the ground base station for uplink service transmission on the first normal subframe, the fifth link is a link established by the terminal and the ground base station for downlink service transmission on the second normal subframe, the sixth link is a link established by the terminal and the ground base station for downlink service transmission on the almost blank subframe, and the seventh link is a link established by the terminal and the ground base station for uplink service transmission on the almost blank subframe; the spectrum efficiency of the sixth link and the spectrum efficiency of the seventh link are determined according to the downlink transmission power of the high-altitude base station on the almost blank subframe.

[0011] As a possible implementation manner, the method further includes: constructing a utility function of the cell according to the transmission rate requirements of the uplink services and the transmission rate requirements of the downlink services in the cell; and solving the utility function of the cell based on the constraint condition of the time slot configuration, to obtain the proportion of the time slots in the normal subframes occupied by the uplink services, the proportion of the time slots in the almost blank subframes occupied by the uplink services, the proportion of the time slots in the normal subframes occupied by the downlink services, and the proportion of the time slots in the almost blank subframes occupied by the downlink services, by taking the function value of the utility function of the cell as the target to be maximized.

[0012] In a second aspect, a transmission configuration apparatus for an air-ground integrated network is provided, the air-ground integrated network including at least one high-altitude base station and at least one ground base station, and the apparatus including: a first construction module configured to construct a first function relationship between a throughput of the air-ground integrated network and a transmission configuration parameter combination; wherein the transmission configuration parameter combination includes the following parameters: a downlink transmission power of the high-altitude base station on an almost blank subframe, a proportion of the almost blank subframe in a scheduling period, a proportion of a first normal subframe in the scheduling period, and a proportion of a second normal subframe in the scheduling period; the sum of the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period is equal to 1; the first normal subframe is a normal subframe for uplink service, and the second normal subframe is a normal subframe for downlink service; and a determination module configured to solve the first function relationship to determine optimal values of the parameters in the transmission configuration parameter combination by taking the throughput of the air-ground integrated network as the target to be maximized.

[0013] As a possible implementation, the throughput of the air-ground integrated network is equal to the sum of the throughput of at least one high-altitude base station and the throughput of at least one ground base station in the air-ground integrated network.

[0014] As a possible implementation, the throughput of the high-altitude base station is determined according to the spectrum efficiency of a first link of the high-altitude base station, the spectrum efficiency of a second link of the high-altitude base station, the spectrum efficiency of a third link of the high-altitude base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the first link is a link established by the terminal and the high-altitude base station for uplink service transmission on the first normal subframe, the second link is a link established by the terminal and the high-altitude base station for downlink service transmission on the second normal subframe, and the third link is a link established by the terminal and the high-altitude base station for downlink service transmission on the almost blank subframe; the spectrum efficiency of the third link is determined according to the downlink transmission power of the high-altitude base station on the almost blank subframe.

[0015] As a possible implementation, the throughput of the ground base station is determined according to the spectrum efficiency of a fourth link of the ground base station, the spectrum efficiency of a fifth link of the ground base station, the spectrum efficiency of a sixth link of the ground base station, the spectrum efficiency of a seventh link of the ground base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the fourth link is a link established by the terminal and the ground base station for uplink service transmission on the first normal subframe, the fifth link is a link established by the terminal and the ground base station for downlink service transmission on the second normal subframe, the sixth link is a link established by the terminal and the ground base station for downlink service transmission on the almost blank subframe, and the seventh link is a link established by the terminal and the ground base station for uplink service transmission on the almost blank subframe; the spectrum efficiency of the sixth link and the spectrum efficiency of the seventh link are determined according to the downlink transmission power of the high-altitude base station on the almost blank subframe.

[0016] As a possible implementation, the apparatus further includes: a second construction module configured to construct a utility function of the cell according to the transmission rate requirement of each uplink service and the transmission rate requirement of each downlink service in the cell; and a solving module configured to solve the utility function of the cell based on the constraint condition of the time slot configuration, so as to maximize the function value of the utility function of the cell, and obtain the proportion of the time slots in the normal subframe occupied by each uplink service, the proportion of the time slots in the almost blank subframe occupied by each uplink service, the proportion of the time slots in the normal subframe occupied by each downlink service, and the proportion of the time slots in the almost blank subframe occupied by each downlink service.

[0017] In a third aspect, a transmission configuration apparatus for an air-ground integrated network is provided, and the apparatus includes a processor configured to implement the transmission configuration method for the air-ground integrated network according to the first aspect when the processor executes a computer program.

[0018] In a fourth aspect, a computer-readable storage medium is provided, and the computer-readable storage medium includes computer instructions, and when the computer instructions are executed, the transmission configuration method for the air-ground integrated network according to the first aspect is implemented.

[0019] The beneficial effects of the second aspect to the fourth aspect described in the present application can be analyzed with reference to the beneficial effects of the first aspect or the second aspect, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical solutions of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0021] Figure 1 A network architecture diagram of an air-ground integrated network is provided for the embodiments of the present application;

[0022] Figure 2 A flowchart of a transmission configuration method for an air-ground integrated network is provided for the embodiments of the present application;

[0023] Figure 3 A flowchart of another transmission configuration method for an air-ground integrated network is provided for the embodiments of the present application;

[0024] Figure 4 A structural diagram of a transmission configuration apparatus for an air-ground integrated network is provided for the embodiments of the present application;

[0025] Figure 5 A structural diagram of another transmission configuration apparatus for an air-ground integrated network is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0026] The technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0027] In the description of the present application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" herein is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "First", "second", etc. are not limited in quantity and execution order, and "first", "second", etc. are not necessarily different. It should be noted that in the present application, "exemplary" or "for example" means to present a relevant concept in a specific way. In the embodiments of the present application, "indication" can include direct indication and indirect indication. For example, the first control information is taken as an example below, the first control information can directly carry the information A itself or its index to achieve the purpose of directly indicating the information A. Or, the first control information can also carry information B which has a correlation with information A, so as to indirectly indicate information A while indicating information B.

[0028] Any embodiment or design scheme described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific way. In the embodiments of the present application, "indication" can include direct indication and indirect indication. For example, the first control information is taken as an example below, the first control information can directly carry the information A itself or its index to achieve the purpose of directly indicating the information A. Or, the first control information can also carry information B which has a correlation with information A, so as to indirectly indicate information A while indicating information B.

[0029] Exemplarily, as shown in the figure, the embodiments of the present application provide an air-ground integrated network architecture. The architecture includes an air-based network and a ground-based network. The air-based network includes a plurality of high-altitude platform base stations (such as high-altitude 1, high-altitude 2, high-altitude 3, and high-altitude 4 in the figure), and the ground-based network includes a plurality of ground communication base stations (such as ground 1, ground 2, ground 3, and ground 4 in the figure). The high-altitude platform base stations are connected by a wireless mesh network Mesh, the ground communication base stations are connected by an optical fiber, and the high-altitude platform base stations and the ground communication base stations are connected by a point-to-point PMP. Figure 1 Figure 1 The air-based network can provide broadband wireless communication as a carrier for information acquisition, forwarding transmission, and processing, and can alleviate the communication pressure of the ground-based network. In order to avoid the influence of extreme weather conditions such as rain, snow, thunder and lightning, and to prevent interference from civil aircraft, the use of stratospheric balloons and other stratospheric aircraft has become the mainstream direction of air-based network construction. The stratospheric balloon uses the high wind speed of the stratosphere to adjust the position, and uses solar energy for power supply. It can stay in the air for a long time, which greatly avoids the problem of energy shortage of traditional unmanned aerial vehicles. Figure 1 The ground-based network is mainly composed of different ground communication base stations.

[0030]

[0031] The ground-based network is mainly composed of different ground communication base stations. ​​

[0032] It should be noted that, Figure 1 This is just an example architecture diagram. Figure 1 The number of structures included, and the names of each structure, are unlimited, except for... Figure 1 In addition to the structure shown, this network architecture can also include other structures, such as communication equipment, smart terminals, and sensors in a ground-based network.

[0033] The application scenarios of the embodiments in this application are not limited. The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0034] As described in the background section, cross-link interference reduces spectral efficiency in integrated air-ground networks. Related technologies mitigate this interference by introducing almost entirely empty subframes. The almost entirely empty subframe (ABS) technique was initially proposed to address control channel interference. If the physical downlink control channel (PDCCH) of the interfering cell is transmitted in every subframe, it severely interferes with the PDCCH channel of the terminal in the affected cell, causing dropped calls. By configuring ABS subframes, the interfering cell reduces its transmission power or stops transmitting on certain physical channels within these almost entirely empty subframes, avoiding interference with the PDCCH channel and physical downlink shared channel (PDSCH) of the terminal in the affected cell. The terminal in the affected cell only decodes the PDCCH channel and transmits data on the almost entirely empty subframes configured in the interfering cell, effectively avoiding interference.

[0035] Introducing the aforementioned scheme, which relies on almost entirely empty subframes, into an integrated air-to-ground network architecture would sacrifice the transmission resources of high-altitude platform base stations in the air-based network. Therefore, effectively mitigating cross-link interference and improving system spectrum efficiency are urgent problems to be solved.

[0036] Based on this, this application provides a transmission configuration method for an integrated air-ground network. The method aims to maximize the spectral efficiency of the integrated air-ground network by determining the optimal values ​​for each parameter in the transmission configuration related to spectral efficiency. This addresses the problem of reduced spectral efficiency caused by cross-link interference in the integrated air-ground network.

[0037] like Figure 2 As shown in the figure, this application embodiment provides a transmission configuration method for an integrated air-ground network, the method including the following steps:

[0038] S201, constructing a first function relationship between a throughput of the air-ground integrated network and a transmission configuration parameter combination.

[0039] The transmission configuration parameter combination comprises the following parameters: a downlink transmission power of the high-altitude base station on the almost blank subframe, a proportion of the almost blank subframe in the scheduling period, a proportion of the first normal subframe in the scheduling period, and a proportion of the second normal subframe in the scheduling period; the sum of the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period is equal to 1; the first normal subframe is a normal subframe for uplink service, and the second normal subframe is a normal subframe for downlink service.

[0040] In some embodiments, the scheduling period is preset by the system, and 10 subframes or more subframes are taken as one scheduling period. The sum of the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period is equal to 1, that is, the following formula is satisfied:

[0041] a n,d +a n,u +a l =1

[0042] a l is the proportion of the almost blank subframe in the scheduling period, a n,u is the proportion of the first normal subframe in the scheduling period, and a n,d is the proportion of the second normal subframe in the scheduling period.

[0043] For example, the scheduling period of a certain air-ground integrated network is 10 subframes, in which the almost blank subframe occupies 4 subframes in the scheduling period, and the proportion is 4 / 10; the first normal subframe occupies 3 subframes in the scheduling period, and the proportion is 3 / 10; and the second normal subframe occupies 3 subframes in the scheduling period, and the proportion is 3 / 10. The sum of the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period is equal to 1.

[0044] In other embodiments, the scheduling period can be artificially set; or can be determined according to historical working experience of the air-ground integrated network.

[0045] The throughput of the air-ground integrated network is equal to the sum of the throughput of at least one high-altitude base station and the throughput of at least one ground base station in the air-ground integrated network.

[0046] Exemplarily, in the integrated air-ground network, three high-altitude base stations, high-altitude 1, high-altitude 2 and high-altitude 3, are included in the air-based network; three ground base stations, ground 1, ground 2 and ground 3, are included in the ground-based network. At this time, the throughput of the integrated air-ground network is the sum of the throughputs of the six base stations, high-altitude 1, high-altitude 2, high-altitude 3, ground 1, ground 2 and ground 3.

[0047] The throughput of the high-altitude base station is determined according to the spectrum efficiency of the first link of the high-altitude base station, the spectrum efficiency of the second link of the high-altitude base station, the spectrum efficiency of the third link of the high-altitude base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the first link is a link established by the terminal and the high-altitude base station for uplink service transmission on the first normal subframe, the second link is a link established by the terminal and the high-altitude base station for downlink service transmission on the second normal subframe, and the third link is a link established by the terminal and the high-altitude base station for downlink service transmission on the almost blank subframe.

[0048] The first functional relationship between the throughput of the high-altitude base station and the transmission configuration parameter combination includes the following formula:

[0049]

[0050] The throughput of the high-altitude base station is determined according to the spectrum efficiency of the first link of the high-altitude base station, the spectrum efficiency of the second link of the high-altitude base station, the spectrum efficiency of the third link of the high-altitude base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the first link is a link established by the terminal and the high-altitude base station for uplink service transmission on the first normal subframe, the second link is a link established by the terminal and the high-altitude base station for downlink service transmission on the second normal subframe, and the third link is a link established by the terminal and the high-altitude base station for downlink service transmission on the almost blank subframe. The spectrum efficiency of the first link of the high-altitude base station, The spectrum efficiency of the second link of the high-altitude base station, The spectrum efficiency of the third link of the high-altitude base station, The number of terminals connected to the high-altitude base station for downlink transmission, The number of terminals connected to the high-altitude base station for uplink transmission, l The proportion of the almost blank subframe in the scheduling period, n,u The proportion of the first normal subframe in the scheduling period, n,d The proportion of the second normal subframe in the scheduling period.

[0051] The spectrum efficiency of the first link of the high-altitude base station and the signal-to-interference-and-noise ratio of the terminal and the high-altitude base station for uplink service on the first normal subframe satisfy the following formula:

[0052]

[0053] The spectrum efficiency of the first link of the high-altitude base station, The spectrum efficiency of the first link of the high-altitude base station, The signal-to-interference-and-noise ratio of the terminal and the high-altitude base station for uplink service on the first normal subframe.

[0054] Signal-to-interference-plus-noise ratio of the terminal and the high-altitude base station when performing uplink service on the first normal subframe satisfies the following formula:

[0055]

[0056] wherein, is the transmission power of the terminal and the high-altitude base station when performing uplink service on the first normal subframe, is the path loss generated when the terminal and the high-altitude base station perform uplink service on the first normal subframe, is the average uplink interference received by the terminal and the high-altitude base station from a neighbor cell when performing uplink service on the first normal subframe, σ 2 is the noise generated when the terminal and the high-altitude base station perform uplink service on the first normal subframe.

[0057] Average uplink interference received by the terminal and the high-altitude base station from a neighbor cell when performing uplink service on the first normal subframe satisfies the following formula:

[0058]

[0059] wherein, is the average uplink interference received by the terminal and the high-altitude base station from a neighbor cell when performing uplink service on the first normal subframe, is the transmission power of the terminal and the high-altitude base station when performing uplink service on the first normal subframe, is the path loss generated when the terminal and the high-altitude base station perform uplink service on the first normal subframe, M k is the number of terminals accessing the high-altitude base station.

[0060] Spectrum efficiency of the second link of the high-altitude base station, signal-to-interference-plus-noise ratio of the terminal and the high-altitude base station when performing downlink service on the second normal subframe satisfy the following formula:

[0061]

[0062] wherein, is the spectrum efficiency of the second link of the high-altitude base station, is the signal-to-interference-plus-noise ratio of the terminal and the high-altitude base station when performing downlink service on the second normal subframe.

[0063] Signal-to-interference-plus-noise ratio of the terminal and the high-altitude base station when performing downlink service on the second normal subframe satisfies the following formula:

[0064]

[0065] wherein, a signal-to-interference-and-noise ratio of the terminal and the high-altitude base station when performing downlink service on the second normal subframe, a transmit power of the terminal and the high-altitude base station when performing downlink service on the second normal subframe, a path loss generated when the terminal and the high-altitude base station perform downlink service on the second normal subframe, P k a transmit power of the terminal and a base station other than the high-altitude base station when performing downlink service on the second normal subframe, σ 2 noise generated when the terminal and the high-altitude base station perform downlink service on the second normal subframe.

[0066] a spectrum efficiency of the third link of the high-altitude base station is determined according to a downlink transmit power of the high-altitude base station on the almost blank subframe, the spectrum efficiency of the third link of the high-altitude base station, and a signal-to-interference-and-noise ratio of the terminal and the high-altitude base station when performing downlink service on the almost blank subframe satisfy the following formula:

[0067]

[0068] wherein, the spectrum efficiency of the third link of the high-altitude base station, the signal-to-interference-and-noise ratio of the terminal and the high-altitude base station when performing downlink service on the almost blank subframe.

[0069] the signal-to-interference-and-noise ratio of the terminal and the high-altitude base station when performing downlink service on the almost blank subframe satisfies the following formula:

[0070]

[0071] wherein, a transmit power of the terminal and the high-altitude base station when performing downlink service on the almost blank subframe, a path loss generated when the terminal and the high-altitude base station perform downlink service on the almost blank subframe, a transmit power of the terminal and a base station other than the high-altitude base station when performing downlink service on the almost blank subframe, h i,k a path loss generated when the terminal and the high-altitude base station perform downlink service on the almost blank subframe, σ 2 noise generated when the terminal and the high-altitude base station perform downlink service on the almost blank subframe. respectively, and a downlink transmit power of the high-altitude base station on the almost blank subframe satisfy the following formula:

[0072]

[0073] wherein, a transmit power of the terminal and the high-altitude base station when performing downlink service on the almost blank subframe, a transmit power of a terminal when performing downlink service on an almost blank subframe with a base station except for the high-altitude base station, a transmit power of the high-altitude base station when performing downlink service on the almost blank subframe, a transmit power of the ground base station when performing downlink service on the almost blank subframe.

[0074] The throughput of the ground base station is determined according to a spectral efficiency of a fourth link of the ground base station, a spectral efficiency of a fifth link of the ground base station, a spectral efficiency of a sixth link of the ground base station, a spectral efficiency of a seventh link of the ground base station, a proportion of the almost blank subframe in a scheduling period, a proportion of a first normal subframe in the scheduling period, and a proportion of a second normal subframe in the scheduling period; the fourth link is a link established by the terminal and the ground base station when performing uplink service transmission on the first normal subframe, the fifth link is a link established by the terminal and the ground base station when performing downlink service transmission on the second normal subframe, the sixth link is a link established by the terminal and the ground base station when performing downlink service transmission on the almost blank subframe, and the seventh link is a link established by the terminal and the ground base station when performing uplink service transmission on the almost blank subframe.

[0075] The first functional relationship between the throughput of the ground base station and the transmission configuration parameter combination includes the following formula:

[0076]

[0077] wherein, C j is the throughput of the ground base station, is the spectral efficiency of the fourth link of the ground base station, is the spectral efficiency of the fifth link of the ground base station, is the spectral efficiency of the sixth link, is the spectral efficiency of the seventh link, is a number of terminals connected to the ground base station for downlink transmission, is a number of terminals connected to the ground base station for uplink transmission, a l is a proportion of the almost blank subframe in the scheduling period, a n,u is a proportion of the first normal subframe in the scheduling period, a n,d is a proportion of the second normal subframe in the scheduling period.

[0078] The spectral efficiency of the fourth link of the ground base station and a signal-to-interference-and-noise ratio of the terminal and the ground base station when performing uplink service on the first normal subframe satisfy the following formula:

[0079]

[0080] wherein, is the spectral efficiency of the fourth link of the high-altitude base station, SINR for the terminal to perform uplink service with the ground base station on the first normal subframe.

[0081] SINR for the terminal to perform uplink service with the ground base station on the first normal subframe satisfies the following formula:

[0082]

[0083] wherein, P is the transmit power for the terminal to perform uplink service with the ground base station on the first normal subframe, PL is the path loss generated when the terminal performs uplink service with the ground base station on the first normal subframe, I is the average uplink interference received by the terminal from the neighbor cell when the terminal performs uplink service with the ground base station on the first normal subframe, and 2 N is the noise generated when the terminal performs uplink service with the ground base station on the first normal subframe.

[0084] I is the average uplink interference received by the terminal from the neighbor cell when the terminal performs uplink service with the ground base station on the first normal subframe satisfies the following formula:

[0085]

[0086] wherein, I is the average uplink interference received by the terminal from the neighbor cell when the terminal performs uplink service with the ground base station on the first normal subframe, P is the transmit power for the terminal to perform uplink service with the ground base station on the first normal subframe, PL is the path loss generated when the terminal performs uplink service with the ground base station on the first normal subframe, k M is the number of terminals accessing the ground base station.

[0087] SINR for the terminal to perform downlink service with the ground base station on the second normal subframe satisfies the following formula:

[0088]

[0089] wherein, M is the spectral efficiency of the second link of the ground base station, SINR for the terminal to perform downlink service with the ground base station on the second normal subframe.

[0090] SINR for the terminal to perform downlink service with the ground base station on the second normal subframe satisfies the following formula:

[0091]

[0092] wherein, is the signal-to-interference-plus-noise ratio of the terminal with the ground base station when performing downlink service on the second normal subframe, is the transmit power of the terminal with the ground base station when performing downlink service on the second normal subframe, is the path loss generated when the terminal performs downlink service on the second normal subframe with the ground base station, P k is the transmit power of the terminal when performing downlink service on the second normal subframe with a base station other than the ground base station, σ 2 is the noise generated when the terminal performs downlink service on the second normal subframe with the high-altitude base station.

[0093] The spectral efficiency of the sixth link is determined according to the downlink transmit power of the high-altitude base station on the almost blank subframe, the spectral efficiency of the sixth link of the ground base station, and the signal-to-interference-plus-noise ratio of the terminal with the ground base station when performing downlink service on the almost blank subframe satisfy the following formula:

[0094]

[0095] wherein, is the spectral efficiency of the sixth link of the ground base station, is the signal-to-interference-plus-noise ratio of the terminal with the high-altitude base station when performing downlink service on the almost blank subframe.

[0096] The signal-to-interference-plus-noise ratio of the terminal with the ground base station when performing downlink service on the almost blank subframe satisfies the following formula:

[0097]

[0098] wherein, is the transmit power of the terminal with the ground base station when performing downlink service on the almost blank subframe, is the path loss generated when the terminal performs downlink service on the almost blank subframe with the ground base station, is the transmit power of the terminal when performing downlink service on the almost blank subframe with a base station other than the ground base station, h i,k is the path loss generated when the terminal performs downlink service on the almost blank subframe with the ground base station, σ 2 is the noise generated when the terminal performs downlink service on the almost blank subframe with the ground base station. The downlink transmit power of the high-altitude base station on the almost blank subframe satisfies the following formula:

[0099]

[0100] wherein, A transmit power of the terminal when performing downlink service with the ground base station on the almost blank subframe, A transmit power of the terminal when performing downlink service with the base station other than the ground base station on the almost blank subframe, A transmit power of the high-altitude base station when performing downlink service on the almost blank subframe, A transmit power of the ground base station when performing downlink service on the almost blank subframe.

[0101] The spectrum efficiency of the seventh link is determined according to the downlink transmit power of the high-altitude base station on the almost blank subframe, and the spectrum efficiency of the seventh link of the ground base station, the signal-to-interference-and-noise ratio of the terminal when performing uplink service with the ground base station on the almost blank subframe satisfies the following formula:

[0102]

[0103] Wherein, A transmit power of the terminal when performing uplink service with the ground base station on the almost blank subframe, A path loss generated when the terminal performs uplink service with the ground base station on the almost blank subframe, A path loss generated when the terminal performs uplink service with the base station other than the ground base station on the almost blank subframe, A transmit power of the terminal when performing uplink service with the base station other than the ground base station on the almost blank subframe, 2 A noise generated when the terminal performs uplink service with the ground base station on the almost blank subframe. The downlink transmit power of the high-altitude base station on the almost blank subframe satisfies the following formula:

[0104]

[0105] Wherein, A transmit power of the terminal when performing downlink service with the base station other than the ground base station on the almost blank subframe, A transmit power of the high-altitude base station when performing downlink service on the almost blank subframe, A transmit power of the ground base station when performing downlink service on the almost blank subframe.

[0106] S202. Maximize the spectrum efficiency of the integrated air-ground network, and solve the first function relationship to determine the optimal value of each parameter in the transmission configuration parameter combination.

[0107] Wherein, the throughput, the proportion of the almost blank subframe in the scheduling period, and the downlink transmit power of the high-altitude base station on the almost blank subframe satisfy the following formula:

[0108]

[0109] In the above formula, a l This represents the proportion of almost blank subframes in the scheduling cycle. C represents the downlink transmit power of a high-altitude base station in a nearly blank subframe. i This refers to the throughput of the integrated air-ground network.

[0110] In some embodiments, the downlink transmit power of a high-altitude base station on nearly blank subframes is defined within a scientifically permissible range. The proportion of almost blank subframes in the scheduling cycle, a l Assignment is done by iterating through the two parameters mentioned above. With a l The value within the scientific range is used to determine the throughput C of the integrated air-ground network. i When it is the maximum value With a l The value of .

[0111] For example, in a certain air-to-ground integrated network, the downlink transmit power of a high-altitude base station in a nearly blank subframe. The traversable value range is {P1, P2, P3, P4, P5}, and the proportion of almost blank subframes in the scheduling cycle is a. l The iterable range of values ​​is {a1, a2, a3, a4, a5}. With a l By iterating through the values ​​within the interval to the above formula, the downlink transmit power of the high-altitude base station in the almost blank subframe is obtained through calculation. For P3, the proportion of almost blank subframes in the scheduling period is a l When the throughput C of the air-to-ground integrated network is a3, i This is the maximum value.

[0112] As can be seen from the above, when the throughput C of the integrated air-ground network... i When it reaches its maximum value, the proportion of almost blank subframes in the scheduling period is a l The value is a3. Among them, the proportion of almost blank subframes in the scheduling period is a. l The proportion of the first normal subframe in the scheduling period, a n,u and the proportion of the second normal subframe in the scheduling period, a n,d Satisfy the following formula:

[0113]

[0114] Among them, a l a represents the proportion of almost blank subframes in the scheduling period. n,u a represents the proportion of the first normal subframe within the scheduling period. n,da proportion of the second normal subframe in the scheduling period, a number of terminals accessing the integrated network of satellite and terrestrial, a spectrum efficiency of the integrated network of satellite and terrestrial for uplink service in the first normal subframe, a spectrum efficiency of the integrated network of satellite and terrestrial for downlink service in the second normal subframe, a spectrum efficiency of the integrated network of satellite and terrestrial for downlink service transmission in the almost blank subframe.

[0115] It can be understood that the above formula is arranged as follows:

[0116]

[0117] a proportion of the first normal subframe in the scheduling period a n,u a proportion of the second normal subframe in the scheduling period a n,d a proportion of the almost blank subframe in the scheduling period a l The functions represented by a proportion of the almost blank subframe in the scheduling period a

[0118]

[0119] In the above embodiment, a proportion of the almost blank subframe in the scheduling period a i a proportion of the second normal subframe in the scheduling period a l a proportion of the first normal subframe in the scheduling period a n,u a proportion of the almost blank subframe in the scheduling period a l a proportion of the second normal subframe in the scheduling period a n,d a proportion of the almost blank subframe in the scheduling period a l a proportion of the second normal subframe in the scheduling period a i a proportion of the second normal subframe in the scheduling period a n,u a proportion of the second normal subframe in the scheduling period a n,d The values of a and a are obtained. Thus, the optimal values of each parameter in the transmission configuration parameter combination are determined, i.e., the downlink transmission power of the high-altitude base station in the almost blank subframe, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period.

[0120] The embodiments of the present application bring at least the following beneficial effects: by constructing a first function relationship of the throughput of the space-ground integrated network and the combination of the transmission configuration parameters, and aiming at maximizing the frequency efficiency, the first function relationship is solved, and then the optimal values of the parameters in the transmission configuration are determined; thereby the problem of the reduction of the spectrum efficiency caused by the cross-link interference in the space-ground integrated network is solved, and the working efficiency of the space-ground integrated network is improved.

[0121] In some embodiments, based on Figure 2 As shown in the embodiment shown in Figure 3 After step 202, the method further includes the following steps:

[0122] S203, according to the transmission rate requirements of each uplink service and the transmission rate requirements of the downlink service in the cell, a utility function of the cell is constructed.

[0123] The utility function represents the satisfaction degree of the cell when obtaining the transmission rate, and the utility function includes the following formula:

[0124]

[0125] U S Q is the utility function of the soft quality of service requirement, U BE is the utility function of the best effort service, R is the achievable rate of the terminal after being allocated the time slot resource, R th is the rate requirement of the cell, p1, q1, p2, q2 are coefficients that have an impact on the slope of the utility function.

[0126] S204, based on the constraint condition of the time slot configuration, aiming at maximizing the function value of the utility function of the cell, the utility function of the cell is solved, and the optimal values of the parameter combination in the time slot resource are obtained.

[0127] The parameter combination of the time slot resource includes the following parameters: the proportion of the time slots in the normal subframe occupied by each uplink service, the proportion of the time slots in the almost blank subframe occupied by each uplink service, the proportion of the time slots in the normal subframe occupied by each downlink service, and the proportion of the time slots in the almost blank subframe occupied by each downlink service.

[0128] It can be understood that when the function value of the utility function reaches the maximum, even if the cell obtains more time slot resources, the function value of the utility function will not increase accordingly. Based on Figure 2 As shown in the embodiment shown in Figure 2The embodiment shown allocates resources in the transmission configuration parameter aiming at maximizing the spectrum efficiency of the integrated air-ground network. It is known that the parameter configuration in the time slot resource satisfies the following constraint conditions: the number of time slots in the normal subframe occupied by each uplink service is less than or equal to the number of first normal subframes, the number of time slots in the normal subframe occupied by each downlink service is less than or equal to the number of second normal subframes, and the sum of the number of time slots in the almost blank subframe occupied by each uplink service and the number of time slots in the almost blank subframe occupied by each downlink service is less than or equal to the number of almost blank subframes.

[0129] In some embodiments, for the utility function in S203, the achievable rate R of the terminal after being allocated with time slot resources is valued in a scientific interval, and by traversing the value of the parameter in the scientific interval, the value of the achievable rate R of the terminal after being allocated with time slot resources is determined when the function value of the utility function is the maximum.

[0130] For example, the achievable rate R of the terminal of a certain cell after being allocated with time slot resources can traverse the value interval {R1, R2, R3, R4, R5}, and the values in the R interval are traversed one by one to the utility function, and it is obtained by calculation that when the achievable rate R of the terminal after being allocated with time slot resources is R2, the function value of the utility function is the maximum U.

[0131] The utility function and the parameter combination of the time slot resource satisfy the following formula:

[0132]

[0133] Among them, is the proportion of time slots in the normal subframe occupied by each uplink service, is the proportion of time slots in the normal subframe occupied by each downlink service, is the proportion of time slots in the almost blank subframe occupied by each uplink service, is the proportion of time slots in the almost blank subframe occupied by each downlink service, is the utility function value when the terminal performs downlink service, is the utility function value when the terminal performs uplink service, is the number of terminals accessing the base station to perform downlink service, is the number of terminals accessing the base station to perform uplink service, is the transmission rate requirement of each downlink service in the cell, is the transmission rate requirement of each uplink service in the cell, l is the proportion of almost blank subframes in the scheduling period, n,u is the proportion of first normal subframes in the scheduling period, n,da proportion of the scheduling period occupied by the second normal subframe, a number of terminals accessing the integrated network of satellite and terrestrial, a spectral efficiency of the integrated network of satellite and terrestrial for uplink service in the first normal subframe, a spectral efficiency of the integrated network of satellite and terrestrial for downlink service in the second normal subframe, a spectral efficiency of the integrated network of satellite and terrestrial for uplink service transmission in the almost blank subframe, a spectral efficiency of the integrated network of satellite and terrestrial for downlink service transmission in the almost blank subframe.

[0134] It can be understood that the uplink interference suffered by the cell can be expressed as a long-term average interference At this time, the network effect maximization problem of the overall network is equivalent to the utility maximization problem of each cell, and the above formula is arranged to obtain the following formula:

[0135]

[0136] The above formula is derived to obtain the proportion of the time slots in the normal subframe occupied by each uplink service the proportion of the time slots in the normal subframe occupied by each downlink service the proportion of the time slots in the almost blank subframe occupied by each uplink service the proportion of the time slots in the almost blank subframe occupied by each downlink service the following functions:

[0137]

[0138] wherein, a utility function of the soft service quality requirement of the cell when performing uplink service, a utility function of the best effort service of the cell when performing uplink service, a utility function of the soft service quality requirement of the cell when performing downlink service, a utility function of the best effort service of the cell when performing downlink service, a spectral efficiency of the integrated network of satellite and terrestrial for uplink service in the first normal subframe, a spectral efficiency of the integrated network of satellite and terrestrial for downlink service in the second normal subframe, a spectral efficiency of the integrated network of satellite and terrestrial for uplink service transmission in the almost blank subframe, a spectral efficiency of the integrated network of satellite and terrestrial for downlink service transmission in the almost blank subframe, m is the number of service flows capable of obtaining service from the base station j, a number of terminals connected to the base station j.

[0139] In the case of the maximum value of the function value of the utility function, the maximum value of the function and the related parameters are substituted into the function to calculate the optimal value of the parameter combination in the time slot resource, i.e., the proportion of the time slots in the normal subframe occupied by each uplink service, the proportion of the time slots in the almost blank subframe occupied by each uplink service, the proportion of the time slots in the normal subframe occupied by each downlink service, and the proportion of the time slots in the almost blank subframe occupied by each downlink service.

[0140] The embodiments of the present application at least have the following beneficial effects: by constructing the utility function of the cell and taking the maximum value of the function value of the utility function as the target, the optimal value of the parameter combination in the time slot resource is obtained, which can improve the satisfaction degree of the user and the utilization rate of the time slot resource.

[0141] The above mainly introduces the scheme provided by the embodiments of the present application from the perspective of the method. To implement the above functions, it contains the hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed in the present text, the embodiments of the present application can be realized in the form of hardware or the combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0142] The embodiments of the present application can divide the functional modules of the communication device according to the above method examples, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated in one processing module. The above integrated module can be realized in the form of hardware or in the form of software functional module. Optionally, the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division. When actually implemented, there can be another division manner.

[0143] Figure 4 A structure schematic diagram of a transmission configuration device 40 of an air-ground integrated network provided by the embodiments of the present application is shown in FIG. 4, which includes a first construction module 401 and a determination module 402. Figure 4

[0144] The first construction module 401 is configured to construct a first function relationship between the throughput of the air-ground integrated network and the transmission configuration parameter combination.

[0145] ​The determining module 402 is configured to solve the first function relationship to determine the optimal value of each parameter in the combination of the transmission configuration parameters, with the objective of maximizing the throughput of the integrated air-ground network.

[0146] In some embodiments, the apparatus further includes a second constructing module 403 configured to construct a utility function of the cell according to the transmission rate requirement of each uplink service and the transmission rate requirement of each downlink service. The solving module 404 is configured to solve the utility function of the cell based on the constraint condition of the time slot configuration, with the objective of maximizing the function value of the utility function of the cell, to obtain the proportion of the time slots in the normal subframe occupied by each uplink service, the proportion of the time slots in the almost blank subframe occupied by each uplink service, the proportion of the time slots in the normal subframe occupied by each downlink service, and the proportion of the time slots in the almost blank subframe occupied by each downlink service.

[0147] In the case where the functions of the above-mentioned integrated modules are implemented in the form of hardware, the embodiment of the present application provides another possible structure of the transmission configuration apparatus of the integrated air-ground network involved in the above-mentioned embodiments. As shown in the figure, the transmission configuration apparatus 50 of the integrated air-ground network includes a processor 502 and a bus 504. Optionally, the transmission configuration apparatus of the integrated air-ground network can further include a memory 501. Optionally, the transmission configuration apparatus of the integrated air-ground network can further include a communication interface 503. Figure 5

[0148] The processor 502 can be various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present application. The processor 502 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the embodiments of the present application. The processor 502 can also be a combination of implementing computing functions, such as one or more microprocessor combinations, combinations of DSP and microprocessor, etc.

[0149] The communication interface 503 is configured to connect with other devices through a communication network. The communication network can be an Ethernet, a wireless access network, a wireless local area network (WLAN) and the like.

[0150] ​The memory 501 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

[0151] As a possible implementation manner, the memory 501 can exist independently of the processor 502, and the memory 501 can be connected to the processor 502 through the bus 504, for storing instructions or program codes. When the processor 502 invokes and executes the instructions or program codes stored in the memory 501, the method for transmission configuration of an air-ground integrated network provided by the embodiments of the present application can be implemented.

[0152] As another possible implementation manner, the memory 501 can also be integrated with the processor 502.

[0153] The bus 504 can be an extended industry standard architecture (EISA) bus or the like. The bus 504 can be divided into an address bus, a data bus, a control bus, and the like. For the convenience of representation, Figure 5 Only one thick line is used in the figure to represent the bus, but it does not mean that there is only one bus or only one type of bus.

[0154] The embodiments of the present application also provide a computer readable storage medium, which includes computer execution instructions. When the computer execution instructions run on the computer, the computer execution instructions make the computer execute the method provided by the above embodiments.

[0155] The embodiments of the present application also provide a computer program product, which can be directly loaded into the memory and contains software codes. The computer program product is loaded and executed by the computer, and can implement the method provided by the above embodiments.

[0156] Those skilled in the art should clearly understand that, in one or more examples described above, the functions described in the present application can be implemented by hardware, software, firmware or any combination thereof. When implemented by software, the functions can be stored in a computer readable medium or transmitted as one or more instructions or codes on a computer readable medium. The computer readable medium includes computer storage medium and communication medium, wherein the communication medium includes any medium that facilitates the transfer of computer programs from one place to another. The storage medium can be any available medium accessible by a general or special purpose computer. Through the above description of the embodiments, those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional modules is exemplified, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0157] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for transmission configuration of an integrated air-ground network, characterized in that, The air-ground integrated network comprises at least one high-altitude base station and at least one ground base station, and the method comprises: a first function relationship between the throughput of the air-ground integrated network and a transmission configuration parameter combination is constructed; wherein the transmission configuration parameter combination comprises the following parameters: downlink transmission power of the high-altitude base station on an almost blank subframe, proportion of the almost blank subframe in a scheduling period, proportion of a first normal subframe in the scheduling period, and proportion of a second normal subframe in the scheduling period; the sum of the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period is equal to 1; the first normal subframe is a normal subframe for uplink service, and the second normal subframe is a normal subframe for downlink service; the first function relationship satisfies the following formula: C0 is the throughput of the high-altitude base station, C1 is the spectral efficiency of the first link of the high-altitude base station, C2 is the spectral efficiency of the second link of the high-altitude base station, C3 is the spectral efficiency of the third link of the high-altitude base station, C4 is the number of terminals connected to the high-altitude base station for downlink transmission, C5 is the number of terminals connected to the high-altitude base station for uplink transmission, l C6 is the proportion of almost blank subframes in a scheduling period, n,u C7 is the proportion of first normal subframes in a scheduling period, n，d C8 is the proportion of second normal subframes in a scheduling period. a maximum throughput of the air-ground integrated network is taken as a target, the first function relationship is solved, and optimal values of the parameters in the transmission configuration parameter combination are determined.

2. The method of claim 1, wherein, The throughput of the air-ground integrated network is equal to the sum of the throughput of the at least one high-altitude base station in the air-ground integrated network and the throughput of the at least one ground base station.

3. The method of claim 2, wherein, The throughput of the high-altitude base station is determined according to the spectral efficiency of a first link of the high-altitude base station, the spectral efficiency of a second link of the high-altitude base station, the spectral efficiency of a third link of the high-altitude base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the first link is a link established by a terminal and the high-altitude base station for uplink service transmission on the first normal subframe, the second link is a link established by the terminal and the high-altitude base station for downlink service transmission on the second normal subframe, and the third link is a link established by the terminal and the high-altitude base station for downlink service transmission on the almost blank subframe; The spectral efficiency of the third link is determined according to the downlink transmission power of the high-altitude base station on the almost blank subframe.

4. The method of claim 2, wherein, The throughput of the ground base station is determined according to the spectral efficiency of a fourth link of the ground base station, the spectral efficiency of a fifth link of the ground base station, the spectral efficiency of a sixth link of the ground base station, the spectral efficiency of a seventh link of the ground base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the fourth link is a link established by a terminal and the ground base station for uplink service transmission on the first normal subframe, the fifth link is a link established by the terminal and the ground base station for downlink service transmission on the second normal subframe, the sixth link is a link established by the terminal and the ground base station for downlink service transmission on the almost blank subframe, and the seventh link is a link established by the terminal and the ground base station for uplink service transmission on the almost blank subframe; The spectral efficiency of the sixth link and the spectral efficiency of the seventh link are determined according to the downlink transmission power of the high-altitude base station on the almost blank subframe.

5. The method according to any one of claims 1 to 4, characterized in that, The method further comprises: constructing a utility function of the cell according to the transmission rate requirements of the respective uplink services and the transmission rate requirements of the downlink services; solving the utility function of the cell based on the constraint condition of the time slot configuration, to obtain the proportion of the time slots in the normal subframes occupied by the respective uplink services, the proportion of the time slots in the almost blank subframes occupied by the respective uplink services, the proportion of the time slots in the normal subframes occupied by the respective downlink services, and the proportion of the time slots in the almost blank subframes occupied by the respective downlink services.

6. A transmission configuration apparatus of a space-ground integrated network, characterized by, The air-ground integrated network comprises at least one high-altitude base station and at least one ground base station, and the device comprises: a first constructing module configured to construct a first function relationship between the throughput of the air-ground integrated network and a transmission configuration parameter combination; wherein the transmission configuration parameter combination comprises the following parameters: the downlink transmission power of the high-altitude base station on the almost blank subframe, the proportion of the almost blank subframe in a scheduling period, the proportion of a first normal subframe in the scheduling period, and the proportion of a second normal subframe in the scheduling period; the sum of the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period is equal to 1; the first normal subframe is a normal subframe for uplink services, and the second normal subframe is a normal subframe for downlink services; the first function relationship satisfies the following formula: C0 is the throughput of the high-altitude base station, C1 is the spectral efficiency of the first link of the high-altitude base station, C2 is the spectral efficiency of the second link of the high-altitude base station, C3 is the spectral efficiency of the third link of the high-altitude base station, C4 is the number of terminals connected to the high-altitude base station for downlink transmission, C5 is the number of terminals connected to the high-altitude base station for uplink transmission, l C6 is the proportion of almost blank subframes in a scheduling period, n，u C7 is the proportion of first normal subframes in a scheduling period, n，d C8 is the proportion of second normal subframes in a scheduling period. a determining module configured to solve the first function relationship to determine the optimal values of the respective parameters in the transmission configuration parameter combination, with the aim of maximizing the throughput of the air-ground integrated network.

7. The apparatus of claim 6, wherein, The throughput of the air-ground integrated network is equal to the sum of the throughput of the at least one high-altitude base station in the air-ground integrated network and the throughput of the at least one ground base station.

8. The apparatus of claim 7, wherein, The throughput of the high-altitude base station is determined according to the spectral efficiency of a first link of the high-altitude base station, the spectral efficiency of a second link of the high-altitude base station, the spectral efficiency of a third link of the high-altitude base station, the proportion of the almost blank subframe in the scheduling period, the proportion of the first normal subframe in the scheduling period, and the proportion of the second normal subframe in the scheduling period; the first link is a link established between a terminal and the high-altitude base station for uplink service transmission on the first normal subframe, the second link is a link established between a terminal and the high-altitude base station for downlink service transmission on the second normal subframe, and the third link is a link established between a terminal and the high-altitude base station for downlink service transmission on the almost blank subframe; The spectral efficiency of the third link is determined according to the downlink transmission power of the high-altitude base station on the almost blank subframe.

9. The apparatus of claim 7, wherein, The throughput of the ground base station is determined according to a spectral efficiency of a fourth link of the ground base station, a spectral efficiency of a fifth link of the ground base station, a spectral efficiency of a sixth link of the ground base station, a spectral efficiency of a seventh link of the ground base station, a proportion of the almost blank subframe in a scheduling period, a proportion of the first normal subframe in the scheduling period, and a proportion of the second normal subframe in the scheduling period; the fourth link is a link established by the terminal and the ground base station for uplink service transmission on the first normal subframe, the fifth link is a link established by the terminal and the ground base station for downlink service transmission on the second normal subframe, the sixth link is a link established by the terminal and the ground base station for downlink service transmission on the almost blank subframe, and the seventh link is a link established by the terminal and the ground base station for uplink service transmission on the almost blank subframe; The spectral efficiency of the sixth link and the spectral efficiency of the seventh link are determined according to a downlink transmission power of the high-altitude base station on the almost blank subframe.

10. The device of any one of claims 6 to 9, wherein, The apparatus further includes: The second constructing module is configured to construct a utility function of the cell according to transmission rate requirements of each uplink service and transmission rate requirements of each downlink service in the cell; The solving module is configured to solve the utility function of the cell based on a constraint condition of the time slot configuration, to maximize a function value of the utility function of the cell, and to obtain a proportion of time slots occupied by each uplink service in a normal subframe, a proportion of time slots occupied by each uplink service in an almost blank subframe, a proportion of time slots occupied by each downlink service in the normal subframe, and a proportion of time slots occupied by each downlink service in the almost blank subframe.

11. A transmission configuration apparatus of a space-ground integrated network, characterized by, The computer readable storage medium includes computer instructions; when the computer instructions are executed, the transmission configuration method of the air-ground integrated network is implemented.

12. A computer-readable storage medium, characterized in that, The computer readable storage medium includes computer instructions; when the computer instructions are executed, the transmission configuration method of the air-ground integrated network is implemented.

Images