Bandwidth determination method and device and electronic equipment

Abstract

The invention provides a bandwidth determination method and device and electronic equipment, and the method comprises the steps: transmitting a detection wave beam to the direction of a ground-air broadband communication ATG base station, and enabling the detection wave beam to be used for receiving a signal; receiving signal power detection is carried out on the detection wave beam; and determining that the bandwidth of the ATG base station can be scheduled by the first ground base station under the condition that the difference between the detected power and the preset reference bottom noise power is smaller than or equal to the preset threshold value, thereby reducing the frequency interference and improving the frequency utilization rate at the same time.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a bandwidth determination method, device and electronic device. Background Art

[0002] In order to realize mobile communication services for passengers on civil aircraft, there are generally two technical methods: onboard satellite communication and onboard air-to-ground broadband communication (Air to Ground, ATG) communication. Among them, the onboard ATG solution is essentially still the same mobile cellular technology as the ground network. It can reuse the ground public network frequency and build ground-to-air coverage base stations (i.e. ATG base stations) along the aircraft route to realize two-way communication between the aircraft and the ground network. The principle of ATG technology is: build ATG base stations on the ground along the aircraft route so that the ATG base stations provide coverage to the air; the customer premises equipment (Customer Premises Equipment, CPE) carried on the aircraft communicates directly with the ground base station and converts the cellular communication signal into a wireless network (Wi-Fi) signal to provide Wi-Fi access wireless network services for passengers in the cabin. The architecture of the ATG system generally includes ATG base stations and core networks, onboard CPE (including antennas), and onboard Wi-Fi access points (APs).

[0003] Considering the utilization rate of frequency resources, ATG base stations are generally not allocated dedicated frequency bands, but reuse a frequency band of the ground public network, which can be understood as the bandwidth of the ATG base station. In this way, interference between the ATG system and the ground network is inevitable, especially the frequency interference between the ATG base station and the ground base station. At present, in order to reduce interference, the commonly used measure is frequency isolation, that is, dividing the frequency, one part of the frequency band is used for ground base station communication, and the other part of the frequency band is used for ATG base station communication, which leads to low frequency utilization. Summary of the invention

[0004] The embodiments of the present application provide a bandwidth determination method, device and electronic device to solve the problem of low frequency utilization rate caused by reducing interference in the prior art.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a bandwidth determination method, which is applied to a first ground base station, and the method includes:

[0007] Transmitting a sounding beam in the direction of an ATG base station for ground-to-air broadband communication, wherein the sounding beam is used to receive a signal;

[0008] Performing received signal power detection on the detection beam;

[0009] When the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, it is determined that the first ground base station can schedule the bandwidth of the ATG base station.

[0010] In a second aspect, an embodiment of the present application provides a bandwidth determination device, which is applied to a first ground base station, and the device includes:

[0011] A transmitting module, used for transmitting a detection beam in the direction of an ATG base station for ground-to-air broadband communication, wherein the detection beam is used for receiving a signal;

[0012] A power detection module, used for detecting the power of a received signal of the detection beam;

[0013] A determination module is used to determine that the first ground base station can schedule the bandwidth of the ATG base station when the difference between the detected power and the preset reference background noise power is less than or equal to a preset threshold.

[0014] In a third aspect, an embodiment of the present application provides an electronic device, including a transceiver and a processor.

[0015] The processor is configured to:

[0016] Transmitting a detection beam in the direction of an ATG base station for ground-to-air broadband communication via a transceiver, wherein the detection beam is used to receive a signal;

[0017] Performing received signal power detection on the detection beam;

[0018] When the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, it is determined that the first ground base station can schedule the bandwidth of the ATG base station.

[0019] In a fourth aspect, an embodiment of the present application provides an electronic device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the bandwidth determination method described in the first aspect above.

[0020] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the bandwidth determination method described in the first aspect are implemented.

[0021] That is, in this embodiment, the received signal power of the detection beam can be detected. When the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, the first ground base station can schedule the bandwidth of the ATG base station to improve frequency utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 is a flow chart of a bandwidth determination method provided by an embodiment of the present application;

[0024] Figure 2 This is one of the application scenario diagrams provided in the embodiment of the present application;

[0025] Figure 3 This is a second application scenario diagram provided by an embodiment of the present application;

[0026] Figure 4 This is a third application scenario diagram provided by an embodiment of the present application;

[0027] Figure 5 This is a bandwidth distribution diagram provided in an embodiment of the present application;

[0028] Figure 6 This is a fourth application scenario diagram provided by an embodiment of the present application;

[0029] Figure 7 This is a fifth application scenario diagram provided by an embodiment of the present application;

[0030] Figure 8 is a schematic diagram of the structure of a bandwidth determination device provided in an embodiment of the present application;

[0031] Fig. 9 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] See also Figure 1 , Figure 1 : is a flowchart of a bandwidth determination method provided in an embodiment of the present application, which is applied to a first ground base station, and the method includes:

[0034] Step 101: transmitting a sounding beam in the direction of an ATG base station for ground-to-air broadband communication, where the sounding beam is used to receive signals;

[0035] Step 102: Detect the received signal power of the detection beam;

[0036] Step 103: When the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, determine the bandwidth of the ATG base station that can be scheduled by the first ground base station.

[0037] That is, in this embodiment, the received signal power of the detection beam can be detected. When the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, the first ground base station can schedule the bandwidth of the ATG base station to improve frequency utilization.

[0038] In one embodiment, the method further comprises:

[0039] When the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, it is determined that the first ground base station cannot schedule the bandwidth of the ATG base station, or the bandwidth of the ATG base station is determined to be the bandwidth of the target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than the preset distance.

[0040] When the difference between the detected power and the preset reference noise floor power is greater than the preset threshold, it can be considered that the ATG base station has business. In order to reduce interference, it can be determined that the first ground base station cannot schedule the bandwidth of the ATG base station, or the bandwidth of the ATG base station can only be used to schedule nearby user terminals.

[0041] In one embodiment, when the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, the method further includes:

[0042] The first information is sent to the second ground base station, where the first information is used to indicate that the bandwidth of the ATG base station is schedulable.

[0043] When the difference between the detected power and the preset reference noise floor power is greater than the preset threshold, it can be considered that the ATG base station has no service. The first ground base station can schedule the bandwidth of the ATG base station to improve frequency utilization.

[0044] In one embodiment, transmitting a detection beam in the direction of an ATG base station for ground-to-air broadband communication includes: transmitting a detection beam in the direction of the ATG base station at each detection period;

[0045] In this detection cycle, when the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, the first ground base station can schedule the bandwidth of the ATG base station before the next detection cycle arrives.

[0046] That is, in this detection cycle, if the difference between the detected power and the preset benchmark background noise power is less than or equal to the preset threshold, it can be considered that the ATG base station has no business in this detection cycle. Until the next detection cycle arrives, the first ground base station can schedule the bandwidth of the ATG base station to ensure the frequency utilization in this detection cycle.

[0047] In one embodiment, transmitting a sounding beam in the direction of an ATG base station for ground-to-air broadband communication includes:

[0048] In the uplink idle time slot of the first ground base station or the protection interval GP of the special subframe, a sounding beam is transmitted toward the ATG base station, wherein the special subframe is used for switching between downlink and uplink.

[0049] In one embodiment, when the detection beam is transmitted in the GP, after detecting the received signal power of the detection beam, the method further includes:

[0050] When the detected power includes a target power that meets a preset characteristic, filtering the target power in the detected power to update the detected power;

[0051] Among them, the preset characteristics include the characteristics of power decreasing over time, and the target power is the power decreasing over time within the target continuous duration.

[0052] In one embodiment, the area served by the ATG base station includes multiple sector areas, the first ground base station is a base station closest to the ATG base station among at least one ground base station in the target sector area, and the target sector area is any area in the multiple sector areas;

[0053] In one embodiment, the detected power is the detected power within the bandwidth of the ATG base station, the bandwidth of the ATG base station includes multiple sub-bandwidths, and the detected power includes the detected power within each sub-bandwidth of the multiple sub-bandwidths;

[0054] Among them, when the difference between the detection power of any sub-bandwidth among multiple sub-bandwidths and the preset reference background noise power is less than or equal to the preset threshold, the first ground base station can schedule any sub-bandwidth; when the difference between the detection power of any sub-bandwidth and the preset reference background noise power is greater than the preset threshold, the first ground base station cannot schedule any sub-bandwidth, or any sub-bandwidth is the bandwidth of the target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than the preset distance.

[0055] In one embodiment, when the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, the method further includes:

[0056] The second information is sent to the second ground base station, and the second information is used to indicate that the bandwidth of the ATG base station is not schedulable, or is used to indicate that the bandwidth of the ATG base station is schedulable and only short-range user terminals can be scheduled, and the distance between the short-range user terminals and the second ground base station is less than a preset distance.

[0057] The process of the above method is described in detail below with reference to a specific embodiment.

[0058] like Figure 2-Figure 3 As shown in the figure, in order to realize mobile communication services for passengers on civil aircraft, there are generally two technical methods: onboard satellite communication and onboard air-to-ground broadband communication (Air to Ground, ATG) communication. Among them, the onboard ATG solution is essentially still the same mobile cellular technology as the ground network. It can reuse the ground public network frequency and build ground-to-air coverage base stations (i.e. ATG base stations) along the aircraft route to realize two-way communication between the aircraft and the ground network. The principle of ATG technology is: build ATG base stations on the ground along the aircraft route so that the ATG base stations provide coverage to the air; the customer premises equipment (Customer Premises Equipment, CPE) carried on the aircraft communicates directly with the ground base station and converts the cellular communication signal into a wireless network (Wi-Fi) signal to provide Wi-Fi access wireless network services for passengers in the cabin. The architecture of the ATG system generally includes ATG base stations and core networks, onboard CPE (including antennas), and onboard Wi-Fi access points (APs).

[0059] like Figure 4 As shown in the figure, the traffic volume of civil airborne communications for passengers is much smaller than that of the ground public network. Considering the utilization rate of spectrum resources, it is generally not allocated a dedicated frequency band, but a frequency of the ground public network is reused (but according to business needs, a frame structure different from that of the ground network is used). Therefore, there must be interference coexistence problems between the ATG system and the ground network, among which the interference risk between the ATG base station and the ground network base station is the most prominent. The main reasons include the high transmission power of the interfering base station, the strong antenna directivity, the small uplink signal strength margin of the interfered base station, and the signal propagation between the interfering base station and the interfered base station is generally the LOS path.

[0060] The current mitigation and avoidance methods for co-frequency interference between ATG base stations and ground communication base stations mainly include distance isolation and frequency isolation. It should also be noted that there are methods to reduce the transmission power, but this directly causes coverage to weaken and the cell to shrink, which is generally difficult to adopt in practice.

[0061] The main disadvantage of interference avoidance measures through distance isolation is that the required avoidance distance is long, which can easily cause gaps in ground coverage. In the above example, the two base stations on the 4.9GHz frequency band need to maintain a distance of 19km, which means that public network base stations cannot be deployed within a radius of 19km with the ATG base station as the center.

[0062] The interference avoidance measures through frequency isolation are essentially divisions within a section of the spectrum, with one part used for ground network communications and one part for ATG communications. Therefore, its main disadvantage is that it reduces the utilization rate of spectrum resources and is only applicable to situations where the ground network traffic is not large.

[0063] Based on this, an embodiment of the present application provides a bandwidth determination method, which can reduce the probability of interference, shorten the isolation distance between base stations, and improve spectrum utilization by adding time domain and spatial domain interference detection means.

[0064] The bandwidth determination method provided in the embodiment of the present application has the main idea of ​​adding time domain and spatial domain interference detection means to form a judgment on whether interference exists and the interference intensity, so as to make targeted avoidance operations. Therefore, the probability of interference occurrence can be reduced, the isolation distance between base stations can be shortened, and the spectrum utilization rate can be improved.

[0065] The ATG system has the following features that can be used for interference detection and avoidance:

[0066] (1) The number of base stations is small and the sites are fixed. According to estimates, only hundreds to thousands of ATG base stations are needed within the territory of mainland my country to basically meet the airborne mobile communication needs of major civil aviation routes. Compared with the hundreds of thousands of macro base stations on the ground public network, the number is only a few hundredths or even one thousandth of the public network base stations. Due to the restrictions on interference coexistence, the site of the ATG base station is relatively fixed after site selection, and whether it is relocated or encrypted, it needs to be designed and demonstrated separately.

[0067] (2) The probability of multi-user concurrency is low, and the single-user throughput is relatively stable. Even if we calculate based on the airspace area and number of flights in the area around Shanghai, there are only 1.4 flights per ATG cell on average, which is equivalent to only 1.4 online users (for ATG cells, one aircraft is one user). At the same time, because there are hundreds of users connected to the Internet at the same time in the cabin, the total throughput of a single aircraft is more stable under the ensemble average effect.

[0068] (3) The main lobe of the base station beam is tilted upward, and the beam direction changes slowly. Since each cell only needs to access one or a few aircraft, the beam can keep tracking the aircraft according to its heading.

[0069] (4) Reuse the frequency band of the large ground network, generally allocate a part of it (but according to business needs, use a frame structure different from the ground network). For example, the ATG system reuses the public network 4.9GHz band, but in order to protect the radio astronomy service of 4825~4835MHz, ATG is limited to using 4840~4900MHz. Figure 5 shown.

[0070] Based on this, an embodiment of the present application provides a bandwidth determination method, which is described by taking the first ground base station as a public network base station as an example. The specific technical solution of the method is as follows:

[0071] First, at each detection cycle, the public network base station may transmit a detection beam in the direction of the public network base station to the ATG base station in the uplink idle time slot or the GP of the special subframe of the public network base station. In addition, the area served by the ATG base station may include multiple sector areas. The first ground base station may be the base station closest to the ATG base station among at least one ground base station in the target sector area. The target sector area is any area in the multiple sector areas:

[0072] For example, the public network base station sends a detection beam toward the ATG base station in a certain uplink idle time slot (time without service or GP time in a special subframe) at a preset period T1 (detection period), such as Figure 6 As shown, the detection beam does not transmit power, but only receives. The direction of the detection beam may not be downward tilted in the vertical direction, and may be along the line connecting the public network base station and the ATG base station in the horizontal direction.

[0073] In the time dimension, because the ATG frame structure is different from the terrestrial network frame structure, the detection time point should be the downlink time slot of the ATG system and the uplink time slot of the terrestrial network; and the detection beam should be emitted within the GP time within the special subframe or within the uplink idle time slot when there is no UE uplink service.

[0074] If the GP time in a special subframe is used, it should be noted that the base station may receive downlink signals transmitted by other distant base stations during this time period. Although it can be considered that all base stations in a mature network are synchronized in time, because the GP is close to the downlink time slot, the downlink signal of the distant base station may fall into the GP after the delay caused by the long-distance propagation, resulting in inaccurate detection results. The main method to avoid this risk is: considering that the time domain characteristic of the downlink signal of the distant base station is that the intensity gradually decreases with the passage of time, power detection can be performed throughout the GP time, and through pattern recognition, it can be determined whether there is a "gradually decreasing intensity" pattern. If this pattern exists, when the intensity decreases to a certain extent and has stabilized, only the stable value is taken, and it is considered that the downlink signal of the distant base station is excluded. If this pattern does not exist, that is, the intensity has been very stable, it is considered that there is no downlink signal from the distant base station.

[0075] If an uplink idle time slot without UE uplink service is used, the UE uplink signal in other cells of the ground network may be collected during this time period, and this type of signal is collected after propagating across cells. However, this type of external useless signal has little effect on the detection accuracy. First, the UE transmission power is much weaker than that of the ATG base station, the propagation path is often an NLOS path, and the propagation loss is high, so the final received signal strength is not high. Secondly, the main lobe direction of the detection beam is basically parallel to the ground, so the UE signal from near the ground is mainly received by the beam sidelobe, and the antenna gain is more than 15dB lower than the main lobe, which has a relative inhibitory effect on the signal strength. Finally, the aggregate effect of the UE uplink signal in the ground cell is more averaged than the signal of each UE, and the whole constitutes a relatively stable external signal, which is always superimposed on the noise floor, so it does not affect the judgment of "whether the ATG base station is working".

[0076] In the spatial dimension, the detection beam should try to receive only the signals transmitted by the ATG base station, and try to avoid receiving signals from other public network terminals and public network base stations, otherwise it will affect the detection accuracy.

[0077] As before, the signals from other public network terminals are relatively weak and the aggregation effect is relatively stable. As long as the base station antenna beamforming capability is within the range, the detection beam is as narrow as possible and the side lobes are not high. Considering that the detection beam is only sent out within the GP time in a special subframe or in the uplink idle time slot, as long as the timing of other public network base stations is accurate, the downlink signals of other public network base stations will not be received. However, considering that: a) the timing may be offset and b) the closer the distance, the more accurate the detection, it should be planned that only a circle of public network base stations adjacent to the ATG base station are sent out to send out detection beams, without the participation of other outer circle base stations.

[0078] In addition, if Figure 7 As shown, specifically at the operational level, the ATG base station should be taken as the center and multiple sector-shaped areas should be divided outward. In each sector-shaped area, only the public network base station closest to the ATG base station will regularly send out detection beams and complete the judgment of "whether it is necessary to avoid interference with the ATG service", and share this judgment with other public network base stations in the sector-shaped area through a unified network management platform.

[0079] Secondly, the received signal power of the detection beam can be detected. The bandwidth of the ATG base station includes multiple sub-bandwidths, and the detected power includes the detection power in each of the multiple sub-bandwidths:

[0080] For example, in the time domain, the duration of the detection beam may be T2. During the duration of T2, the public network base station invokes the background noise monitoring function to read the background noise value (corresponding to the detected power) within the dedicated bandwidth of the ATG base station (eg, 4840-4900 MHz).

[0081] Furthermore, in this probe cycle, if the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, before the next detection cycle arrives, determine that the first ground base station can schedule the bandwidth of the ATG base station: if the difference between the detected power and the preset reference noise floor power is greater than the preset threshold, determine that the first ground base station cannot schedule the bandwidth of the ATG base station, or determine that the bandwidth of the ATG base station is the bandwidth of the target user terminal that can be scheduled by the first ground base station:

[0082] That is, if the detected noise floor value (corresponding to the detected power) is lower than or equal to the preset threshold A1 (corresponding to the preset threshold), it can be considered that the ATG base station currently has no business, so until the next detection, the public network base station can schedule the dedicated bandwidth of the ATG base station for public network business; if the detected noise floor value is higher than A1, it is considered that the ATG base station has business, and the public network base station cannot use its dedicated bandwidth, or can only use the ATG dedicated bandwidth to schedule nearby users.

[0083] It should also be noted that in terms of spectrum, generally speaking, the ATG system is only allowed to schedule resources and carry services within the pre-allocated frequency band. However, the business load of the ATG system may vary with the number of flights, flight time, aircraft size, and number of passengers, so the system often does not need to occupy all pre-allocated bandwidth, but only schedules part of it.

[0084] Therefore, the embodiment of the present application can also finely analyze the actual scheduling of the ATG dedicated bandwidth from the spectrum dimension. When the difference between the detection power of any sub-bandwidth in the above-mentioned multiple sub-bandwidths and the preset reference noise floor power is less than or equal to the preset threshold, it means that the noise floor is low in the sub-bandwidth, and the first ground base station can schedule the sub-bandwidth; when the difference between the detection power of any sub-bandwidth in the above-mentioned multiple sub-bandwidths and the preset reference noise floor power is greater than the preset threshold, it means that the noise floor is high in the sub-bandwidth, and the first ground base station cannot schedule any sub-bandwidth, or the sub-bandwidth is the bandwidth of the target user terminal that the first ground base station can schedule. For example, within the entire 60MHz bandwidth (4840~4900MHz), if only the first 40MHz (4840~4880MHz) has a high noise floor, it means that the ATG traffic only requires 40MHz bandwidth, and the remaining 20MHz (4880~4900MHz) can still be used by the ground network.

[0085] See also Figure 8 , Figure 8 800 is a schematic diagram of a bandwidth determination device 800 provided in an embodiment of the present application, which is applied to a first ground base station, such as Figure 8 As shown, the bandwidth determination device 800 provided in this embodiment includes:

[0086] The transmitting module 801 is used to transmit a detection beam in the direction of the ground-to-air broadband communication ATG base station, and the detection beam is used to receive signals;

[0087] A power detection module 802 is used to detect the received signal power of the detection beam;

[0088] The first determination module 803 is used to determine the bandwidth of the ATG base station that can be scheduled by the first ground base station when the difference between the detected power and the preset reference background noise power is less than or equal to a preset threshold.

[0089] In one embodiment, the bandwidth determination device 800 further includes:

[0090] The second determination module is used to determine that the first ground base station cannot schedule the bandwidth of the ATG base station when the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, or to determine that the bandwidth of the ATG base station is the bandwidth of the target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than the preset distance.

[0091] In one embodiment, when the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, the device further includes:

[0092] The first sending module is used to send first information to the second ground base station, where the first information is used to indicate that the bandwidth of the ATG base station is schedulable.

[0093] In one embodiment, transmitting a detection beam in the direction of an ATG base station for ground-to-air broadband communication includes: transmitting a detection beam in the direction of the ATG base station at each detection period;

[0094] In this detection cycle, when the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, the first ground base station can schedule the bandwidth of the ATG base station before the next detection cycle arrives.

[0095] In one embodiment, transmitting a sounding beam in the direction of an ATG base station for ground-to-air broadband communication includes:

[0096] In the uplink idle time slot of the first ground base station or the protection interval GP of the special subframe, a sounding beam is transmitted toward the ATG base station, wherein the special subframe is used for switching between downlink and uplink.

[0097] In one embodiment, the bandwidth determination device 800 further includes:

[0098] An updating module, configured to, when a sounding beam is transmitted in the GP, filter the target power in the detected power after the power detection module 802 detects the power of a received signal of the sounding beam, if the detected power includes a target power that satisfies a preset characteristic, to update the detected power;

[0099] Among them, the preset characteristics include the characteristics of power decreasing over time, and the target power is the power decreasing over time within the target continuous duration.

[0100] In one embodiment, the area served by the ATG base station includes multiple sector areas, the first ground base station is the base station closest to the ATG base station among at least one ground base station in the target sector area, and the target sector area is any area among the multiple sector areas.

[0101] In one embodiment, the bandwidth of the ATG base station includes multiple sub-bandwidths, and the detected power includes the detected power in each sub-bandwidth of the multiple sub-bandwidths;

[0102] Among them, when the difference between the detection power of any sub-bandwidth among multiple sub-bandwidths and the preset reference background noise power is less than or equal to the preset threshold, the first ground base station can schedule any sub-bandwidth; when the difference between the detection power of any sub-bandwidth and the preset reference background noise power is greater than the preset threshold, the first ground base station cannot schedule any sub-bandwidth, or any sub-bandwidth is the bandwidth of the target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than the preset distance.

[0103] In one embodiment, when the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, the bandwidth determination device 800 further includes:

[0104] The second sending module is used to send second information to the second ground base station, and the second information is used to indicate that the bandwidth of the ATG base station is not schedulable, or is used to indicate that the bandwidth of the ATG base station is schedulable and only short-range user terminals can be scheduled, and the distance between the short-range user terminals and the second ground base station is less than a preset distance.

[0105] The bandwidth determination device 800 provided in this embodiment can implement each process of each embodiment of the bandwidth determination method applied to the first ground base station. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be repeated here.

[0106] The embodiment of the present application further provides an electronic device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, each process of the above-mentioned bandwidth determination method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0107] For details, see Fig. 9 As shown, an embodiment of the present application also provides an electronic device, which may be a first ground base station, including a bus 901, a transceiver 902, an antenna 903, a bus interface 904, a processor 905 and a memory 906.

[0108] The processor 905 is used for:

[0109] Transmitting a detection beam in the direction of the ground-to-air broadband communication ATG base station through the transceiver 902, the detection beam is used to receive signals;

[0110] Performing received signal power detection on the detection beam;

[0111] When the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, it is determined that the first ground base station can schedule the bandwidth of the ATG base station.

[0112] In one embodiment, the processor 905 is further configured to:

[0113] When the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, it is determined that the first ground base station cannot schedule the bandwidth of the ATG base station, or the bandwidth of the ATG base station is determined to be the bandwidth of the target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than the preset distance.

[0114] In one embodiment, when the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, the processor 905 is further configured to:

[0115] The first information is sent to the second ground base station through the transceiver 902, and the first information is used to indicate that the bandwidth of the ATG base station is schedulable.

[0116] In one embodiment, transmitting a detection beam in the direction of an ATG base station for ground-to-air broadband communication includes: transmitting a detection beam in the direction of the ATG base station at each detection period;

[0117] In this detection cycle, when the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, the first ground base station can schedule the bandwidth of the ATG base station before the next detection cycle arrives.

[0118] In one embodiment, transmitting a sounding beam in the direction of an ATG base station for ground-to-air broadband communication includes:

[0119] In the uplink idle time slot of the first ground base station or the protection interval GP of the special subframe, a sounding beam is transmitted toward the ATG base station, wherein the special subframe is used for switching between downlink and uplink.

[0120] In one embodiment, the processor 905 is further configured to:

[0121] In the case of transmitting a probing beam in the GP, after detecting the power of a received signal of the probing beam, if the detected power includes a target power that satisfies a preset characteristic, the target power in the detected power is filtered to update the detected power;

[0122] Among them, the preset characteristics include the characteristics of power decreasing over time, and the target power is the power decreasing over time within the target continuous duration.

[0123] In one embodiment, the area served by the ATG base station includes multiple sector areas, the first ground base station is the base station closest to the ATG base station among at least one ground base station in the target sector area, and the target sector area is any area among the multiple sector areas.

[0124] In one embodiment, the bandwidth of the ATG base station includes multiple sub-bandwidths, and the detected power includes the detected power in each sub-bandwidth of the multiple sub-bandwidths;

[0125] Among them, when the difference between the detection power of any sub-bandwidth among multiple sub-bandwidths and the preset reference background noise power is less than or equal to the preset threshold, the first ground base station can schedule any sub-bandwidth; when the difference between the detection power of any sub-bandwidth and the preset reference background noise power is greater than the preset threshold, the first ground base station cannot schedule any sub-bandwidth, or any sub-bandwidth is the bandwidth of the target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than the preset distance.

[0126] In one embodiment, when the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, the processor 905 is further configured to:

[0127] The second information is sent to the second ground base station through the transceiver 902, and the second information is used to indicate that the bandwidth of the ATG base station is not schedulable, or is used to indicate that the bandwidth of the ATG base station is schedulable and only short-range user terminals can be scheduled, and the distance between the short-range user terminals and the second ground base station is less than a preset distance.

[0128] exist Fig. 9In the embodiment, the bus architecture (represented by bus 901) may include any number of interconnected buses and bridges, and bus 901 links various circuits including one or more processors represented by processor 905 and memory represented by memory 906. Bus 901 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 904 provides an interface between bus 901 and transceiver 902. Transceiver 902 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 905 is transmitted on a wireless medium via antenna 903, and further, antenna 903 also receives data and transmits the data to processor 905.

[0129] The processor 905 is responsible for managing the bus 901 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 906 can be used to store data used by the processor 905 when performing operations.

[0130] Optionally, the processor 905 may be a CPU, an ASIC, an FPGA or a CPLD.

[0131] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above-mentioned bandwidth determination method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium, such as ROM, RAM, disk or optical disk, etc.

[0132] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0133] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of each embodiment of the present application.

[0134] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A bandwidth determination method, characterized in that: Applied to a first ground base station, the method comprises: Transmitting a sounding beam in the direction of an ATG base station for ground-to-air broadband communication, wherein the sounding beam is used to receive a signal; Performing received signal power detection on the detection beam; When the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, it is determined that the first ground base station can schedule the bandwidth of the ATG base station.

2. The method according to claim 1, characterized in that The method further comprises: When the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, it is determined that the first ground base station cannot schedule the bandwidth of the ATG base station, or it is determined that the bandwidth of the ATG base station is the bandwidth of the target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than a preset distance.

3. The method according to claim 1, characterized in that: In a case where the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, the method further includes: First information is sent to the second ground base station, where the first information is used to indicate that the bandwidth of the ATG base station is schedulable.

4. The method according to claim 1, characterized in that: The transmitting of the detection beam in the direction of the ATG base station for ground-to-air broadband communication includes: transmitting the detection beam in the direction of the ATG base station at each detection period; In this detection cycle, when the difference between the detected power and the preset reference noise floor power is less than or equal to the preset threshold, the first ground base station can schedule the bandwidth of the ATG base station before the next detection cycle arrives.

5. The method according to claim 1, characterized in that The transmitting of a detection beam in the direction of an ATG base station for ground-to-air broadband communication includes: The detection beam is transmitted in the direction of the ATG base station within the uplink idle time slot or the protection interval GP of the special subframe of the first ground base station, wherein the special subframe is used for switching between downlink and uplink.

6. The method according to claim 5, characterized in that In the case where the sounding beam is transmitted in the GP, after performing received signal power detection on the sounding beam, the method further includes: In a case where the detected power includes a target power that meets a preset feature, filtering the target power in the detected power to update the detected power; Among them, the preset characteristics include the characteristics of power decreasing over time, and the target power is the power that decreases over time within a target continuous duration.

7. The method according to claim 1, characterized in that The area served by the ATG base station includes multiple sector areas, the first ground base station is the base station closest to the ATG base station among at least one ground base station in the target sector area, and the target sector area is any area among the multiple sector areas.

8. The method according to claim 1, characterized in that The bandwidth of the ATG base station includes multiple sub-bandwidths, and the detected power includes the detected power in each sub-bandwidth of the multiple sub-bandwidths; Among them, when the difference between the detection power of any sub-bandwidth among the multiple sub-bandwidths and the preset reference background noise power is less than or equal to a preset threshold, the first ground base station can schedule any sub-bandwidth; when the difference between the detection power of any sub-bandwidth and the preset reference background noise power is greater than the preset threshold, the first ground base station cannot schedule any sub-bandwidth, or any sub-bandwidth is a bandwidth of a target user terminal that can be scheduled by the first ground base station, and the distance between the target user terminal and the first ground base station is less than the preset distance.

9. The method according to claim 2, characterized in that: In a case where the difference between the detected power and the preset reference noise floor power is greater than a preset threshold, the method further includes: Send second information to the second ground base station, wherein the second information is used to indicate that the bandwidth of the ATG base station is not schedulable, or is used to indicate that the bandwidth of the ATG base station is schedulable and only short-range user terminals can be scheduled, and the distance between the short-range user terminals and the second ground base station is less than the preset distance.

10. A bandwidth determination device, characterized in that: Applied to a first ground base station, the device comprises: A transmitting module, used for transmitting a detection beam in the direction of an ATG base station for ground-to-air broadband communication, wherein the detection beam is used for receiving a signal; A power detection module, used for detecting the power of a received signal of the detection beam; A determination module is used to determine that the first ground base station can schedule the bandwidth of the ATG base station when the difference between the detected power and the preset reference background noise power is less than or equal to a preset threshold.

11. An electronic device, characterized in that: Including transceiver and processor, The processor is configured to: Transmitting a detection beam in the direction of an ATG base station for ground-to-air broadband communication via a transceiver, wherein the detection beam is used to receive a signal; Performing received signal power detection on the detection beam; When the difference between the detected power and the preset reference noise floor power is less than or equal to a preset threshold, it is determined that the first ground base station can schedule the bandwidth of the ATG base station.

12. An electronic device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program implements the steps of the method according to any one of claims 1 to 9 when executed by the processor.

13. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of any one of the methods of claims 1-9.

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