Satellite-ground uplink frequency sharing method, device, equipment, medium and program product

Abstract

The invention discloses a satellite-ground uplink frequency sharing method, device and equipment, a medium and a program product, and the method comprises the steps: receiving first information; the first information comprises a mapping table between the wave position and the frequency; receiving second information; the second information comprises a beam hopping pattern; performing frequency configuration on a beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information; according to the method, the problem that the satellite coverage and the spectrum utilization rate are contradictory under the existing satellite-ground frequency sharing single interference avoidance mode can be solved, and satellite-ground same adjacent channel coexistence under whole satellite coverage is realized.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a satellite-to-ground uplink frequency sharing method, device, equipment, medium and program product. Background Art

[0002] For satellite-ground uplink frequency sharing, the satellite is severely interfered by the aggregate interference of wide-area ground cellular terminals. Existing satellite-ground uplink frequency sharing methods are mostly static, pre-set deployment methods, using a single spatial isolation or frequency isolation. However, if only relying on spatial isolation, an isolation zone of hundreds of kilometers may be required, and the satellite coverage area will be limited; if only relying on frequency isolation, due to the adjacent channel leakage ratio (ACLR) of the cellular terminal and the adjacent channel selectivity (ACS) of the satellite receiver, it will bring a large suppression gain, and the satellite-ground adjacent frequency deployment will be much lower than the same frequency deployment isolation zone. Although the satellite coverage range is improved, the spectrum utilization rate will decrease.

[0003] Since the coverage range of the entire satellite is extremely large, for example, a low-orbit satellite with an orbital altitude of 500km and a scanning angle of ±58° has a coverage diameter of 1600km, the satellite-ground co-frequency deployment and adjacent frequency deployment scenarios may be able to coexist within the coverage range of the satellite. The existing single interference avoidance method for satellite-ground uplink frequency sharing will bring about the problem of contradiction between satellite coverage and spectrum utilization. Summary of the invention

[0004] In view of the problems existing in the prior art, the embodiments of the present invention provide a method, device, equipment, medium and program product for sharing satellite-ground uplink frequencies, which can solve the problem of contradiction between satellite coverage and spectrum utilization under the existing single interference avoidance mode of satellite-ground frequency sharing, and realize the coexistence of satellite and ground adjacent frequencies under the coverage of the entire satellite.

[0005] In a first aspect, an embodiment of the present invention provides a satellite-ground uplink frequency sharing method, including:

[0006] Receive first information; the first information includes a mapping table between wave positions and frequencies;

[0007] receiving second information; the second information comprising a beam hopping pattern;

[0008] The frequency configuration of the beam digital filtering function is performed according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information.

[0009] As an improvement of the above solution, the frequency configuration of the beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information includes:

[0010] Determining the uplink beam pointing position and beam hopping time of the next stage according to the beam hopping pattern;

[0011] Determine, according to the mapping table between the beam position and the frequency, the frequency range required to be configured for the beam digital filtering function corresponding to the beam position pointed by the uplink beam;

[0012] The uplink beam pointing wave position, the beam hopping time and the frequency range are used to perform frequency configuration on the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position.

[0013] As an improvement of the above solution, the step of determining the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed to by the uplink beam according to the mapping table between the wave position and the frequency includes:

[0014] Writing a mapping table between wave positions and frequencies in the currently received first information into a local cache; wherein the local cache also stores a mapping table between wave positions and frequencies received last time;

[0015] Matching the mapping table between the wave position and frequency received last time with the wave position pointed by the uplink beam;

[0016] When the mapping table between the wave position and the frequency received last time does not have a wave position that matches the wave position pointed to by the uplink beam, determining the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed to by the uplink beam according to the mapping table between the wave position and the frequency currently received, and deleting the mapping table between the wave position and the frequency received last time from the local cache;

[0017] When the mapping table between the wave position received last time and the frequency contains a wave position that matches the wave position to which the uplink beam is pointed, the frequency range required to be configured for the beam digital filtering function corresponding to the wave position to which the uplink beam is pointed is determined based on the mapping table between the wave position received last time and the frequency.

[0018] As an improvement of the above scheme, the uplink beam pointing wave position, the beam hopping time and the frequency range are used to perform frequency configuration on the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position, including:

[0019] According to the uplink beam pointing wave position, the beam hopping time and the frequency range, the frequency configuration corresponding to each uplink beam pointing wave position in the next stage is sent to the corresponding beam digital filtering function for frequency configuration in advance of the first set time.

[0020] As an improvement of the above solution, the mapping table includes third information indicating the wave position and fourth information indicating the frequency range of the wave position.

[0021] As an improvement of the above solution, the third information includes a wave position number or indicates the longitude and latitude of the wave position area; the fourth information includes a readable frequency parameter of the beam digital filtering function or an adjustment mark indicating the digital filtering frequency range.

[0022] As an improvement of the above-mentioned scheme, the mapping table is sent by the first non-ground network base station on the ground or the satellite-ground intelligent collaborative network element according to a set sending period; wherein, the set sending period is less than the preset satellite movement time, and the wave positions indicated in the mapping table include the wave positions covered by the satellite within the satellite movement time.

[0023] As an improvement of the above solution, the beam hopping pattern is formulated and sent by a first non-ground network base station on the ground or a second non-ground network base station on the satellite.

[0024] As an improvement on the above scheme, the mapping table is obtained by estimating or simulating the geographical isolation distance of the ground network sharing the wave position and frequency based on the fifth information related to the satellite and the ground network; wherein the geographical isolation distance corresponding to each wave position is the geographical isolation distance corresponding to the position with the most serious uplink interference within the time range from the corresponding wave position entering, passing through to exiting, and the geographical isolation distance meets the satellite-ground co-frequency\adjacent frequency compatibility requirements.

[0025] As an improvement of the above solution, the fifth information includes: effective isotropic radiated power of the satellite and ground network, interference threshold, sidelobe suppression, adjacent channel leakage ratio, satellite beam coverage information, and ground network deployment information.

[0026] In a second aspect, an embodiment of the present invention provides a satellite-ground uplink frequency sharing device, including:

[0027] A first information receiving module, used to receive first information; the first information includes a mapping table between wave positions and frequencies;

[0028] A second information receiving module, configured to receive second information; the second information includes a beam hopping pattern;

[0029] The digital filtering configuration module is used to perform frequency configuration on the beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information.

[0030] In a third aspect, an embodiment of the present invention provides a satellite-to-ground uplink frequency sharing device, comprising: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the satellite-to-ground uplink frequency sharing method as described in any one of the first aspects is implemented.

[0031] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the satellite-to-ground uplink frequency sharing method as described in any one of the first aspects.

[0032] In a fifth aspect, an embodiment of the present invention provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the satellite-ground uplink frequency sharing method as described in any one of the first aspects.

[0033] Compared with the prior art, the embodiments of the present invention provide a satellite-ground uplink frequency sharing method, device, equipment, medium and program product. The satellite performs frequency configuration on the beam digital filtering function according to the mapping table between the wave position and the frequency in the received first information and the beam hopping pattern in the second information. This can enable different beams under the entire satellite to receive different frequency ranges, thereby solving the problem of the contradiction between satellite coverage and spectrum utilization under the existing single interference avoidance mode of satellite-ground frequency sharing, and achieving the coexistence of satellite and ground adjacent frequencies under the coverage of the entire satellite. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present invention, the drawings used in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a schematic diagram of a scenario in which a satellite and a ground network use the same frequency according to an embodiment of the present invention;

[0036] Figure 2 is a schematic diagram of a scenario in which a satellite and a ground network use adjacent frequencies according to an embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of a scenario in which a satellite and a ground network use different frequencies using a frequency isolation band according to an embodiment of the present invention;

[0038] Figure 4 is a flow chart of a satellite-to-ground uplink frequency sharing method provided by an embodiment of the present invention;

[0039] Figure 5 This is an interactive flow chart of satellite-to-ground uplink frequency sharing in a transparent forwarding mode provided by an embodiment of the present invention;

[0040] Figure 6 It is a schematic diagram of functional modules in a transparent forwarding mode provided by an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of functional modules in an on-board regeneration mode provided by an embodiment of the present invention;

[0042] Figure 8 It is a structural block diagram of a satellite-to-ground uplink frequency sharing device provided by an embodiment of the present invention;

[0043] Fig. 9 The present invention provides a structural block diagram of a satellite-ground uplink frequency sharing device. DETAILED DESCRIPTION

[0044] Currently, satellite communication networks and ground networks generally use different frequencies to avoid the risk of interference between systems and reduce deployment difficulties. However, the low-frequency bands below 6GHz suitable for mobile phones to directly connect to satellites are tight and the spectrum resource utilization rate is low. It is difficult to allocate independent frequency bands for low-orbit satellite networks. At present, satellite-ground spectrum sharing is a potential solution, but it is necessary to avoid serious satellite-ground co-frequency interference.

[0045] Most of the existing satellite-ground fusion frequency sharing methods are based on single-dimension interference avoidance such as frequency isolation and spatial isolation, which are not very flexible and have low spectrum utilization efficiency. Figures 1 to 3 The satellite-ground uplink frequency sharing scheme under a single spatial isolation or frequency isolation is shown; when the satellite and the ground network use the same frequency, the following scenarios exist: (1) In the same frequency and same area scenario, main lobe interference cannot coexist; (2) In the same frequency isolation zone, side lobe interference cannot coexist; (3) Satellite-ground same frequency sharing scenario. When the satellite and the ground network use adjacent frequencies, the following scenarios exist: (1) In the adjacent frequency and same area scenario, main lobe and adjacent frequency interference cannot coexist; (2) In the adjacent frequency isolation zone, adjacent frequency side lobe interference cannot coexist; (3) Satellite-ground same frequency sharing scenario. When the satellite and the ground network use different frequencies using a frequency isolation zone, the satellite-ground same frequency sharing scenario. It can be seen that if only spatial isolation is relied upon, an isolation zone of hundreds of kilometers may be required, limiting the satellite coverage area. If only frequency isolation is relied upon, due to the ACLR of the cellular terminal and the ACS of the satellite receiver, a large suppression gain will be brought about, and the satellite-ground adjacent frequency deployment will be much lower than the same frequency deployment isolation zone, and the satellite coverage range will be improved, but the spectrum utilization rate will decrease.

[0046] Since the coverage range of the entire satellite is extremely large, for example, a low-orbit satellite with an orbital altitude of 500km and a scanning angle of ±58° has a coverage diameter of 1600km, the satellite-ground co-frequency deployment and adjacent frequency deployment scenarios may be able to coexist within the coverage range of the satellite. The existing single interference avoidance method for satellite-ground uplink frequency sharing will bring about the problem of contradiction between satellite coverage and spectrum utilization.

[0047] The key component of satellite adjacent frequency reception is the beam digital filtering function of the analog to digital converter ADC (ADC), which is configured as the cell bandwidth by default. When the entire satellite is a cell, it is impossible to achieve the goal of different filter sliding window configurations under the same satellite; when multiple satellite beams are a cell, the beams are bound to the co-adjacent frequency configuration of the ground network, and it is impossible to flexibly configure the sliding window according to the satellite-ground interference relationship; when a single beam is a cell, there is: the satellite uplink and downlink interference intensity is inconsistent, resulting in inconsistency between the uplink and downlink and the co-adjacent frequency deployment requirements of the ground when the beam is pointed to a certain area. If the beam digital filtering function is configured as the cell bandwidth, when the satellite downlink can be deployed in the same frequency and the uplink can only be deployed in the adjacent frequency, the cell bandwidth can only be configured as the adjacent frequency range, which limits the use range of the downlink frequency. At the same time, the beam digital filtering function of the same beam cannot be adjusted according to the dynamic jump of the beam.

[0048] In order to solve the problem of contradiction between satellite coverage and spectrum utilization under the above-mentioned existing satellite-ground uplink frequency sharing single interference avoidance mode, an embodiment of the present invention proposes a satellite-ground uplink frequency sharing method. The satellite beam matches the corresponding frequency range when pointing to a fixed area based on the mapping relationship between the uploaded wave position and frequency, and dynamically adjusts the digital filtering function sliding window corresponding to each beam. Without dynamically changing the overall frequency configuration of the ground network, different beams under the whole satellite receive different frequency ranges, and establish a same-adjacent frequency relationship with the ground as needed, so as to achieve the co-existence of satellite and ground same-adjacent frequencies under the coverage of the whole satellite.

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It is understood that the various numbers involved in the embodiments of the present invention are only for the convenience of description and are not intended to limit the scope of the present application. The size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

[0051] In embodiments of the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment 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 equipment. In the absence of more restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "multiple or several" refers to two or more, and the same applies to "multiple / items or several / items". "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0052] See also Figure 4 , Figure 4 1 is a flow chart of a satellite-to-ground uplink frequency sharing method provided by an embodiment of the present invention. The satellite-to-ground uplink frequency sharing method specifically includes:

[0053] S11: Receive first information; the first information includes a mapping table between wave positions and frequencies;

[0054] S12: receiving second information; the second information includes a beam hopping pattern;

[0055] S13: Perform frequency configuration on the beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information.

[0056] It should be noted that the satellite-ground uplink frequency sharing method described in the embodiment of the present invention can be executed by a satellite, and the mapping table between the beam position and the frequency is formulated by the first non-terrestrial network (NTN) base station on the ground or the satellite-ground intelligent collaborative network element to form the first information and upload it to the satellite; the beam hopping pattern is formulated by the first non-terrestrial network base station on the ground or the second non-terrestrial network base station on the satellite to form the second information and upload it to the satellite.

[0057] Among them, the beam hopping pattern specifies the beam pointing wave position and the beam hopping time, and the mapping table between the wave position and the frequency specifies the beam pointing wave position and the frequency range of the digital filtering function configuration. The satellite platform or satellite payload on the satellite is based on the mapping table between the wave position and the frequency and the beam hopping pattern. By looking up the mapping table, it is possible to quickly obtain the frequency range and the corresponding configuration time that each beam digital filtering function should be configured within a period of time, and then perform frequency configuration on the beam digital filtering function, so that different beams under the entire satellite can receive different frequency ranges, solve the contradiction between satellite coverage and spectrum utilization under the existing single interference avoidance method of satellite-ground frequency sharing, and realize the coexistence of satellite and ground adjacent frequencies under the coverage of the entire satellite.

[0058] Specifically, the mapping table between the wave position and the frequency includes third information indicating the wave position and fourth information indicating the frequency range of the wave position.

[0059] The third information includes the wave position number or the longitude and latitude indicating the wave position area; the fourth information includes the frequency parameter readable by the beam digital filtering function or the adjustment mark indicating the digital filtering frequency range. For example, the adjustment mark 0 represents the reception of the 20M frequency which is the same frequency as the ground, and the adjustment mark 1 represents the reception of the 5M frequency which is the adjacent frequency to the ground. It should be understood that the frequency parameter or the adjustment mark indicates the frequency range which needs to be configured for the beam digital filtering function of the corresponding wave position.

[0060] It should be noted that the term "adjustment identifier" can also be described as "frequency adjustment code" and "adjustment code", and the three can be used interchangeably and are not specifically limited in the embodiments of the present invention.

[0061] The data format of the mapping table between wave position and frequency is shown in the following table.

[0062] Wave position number / latitude and longitude 1 Frequency parameter / adjustment mark 1 …… …… Wave position number / latitude and longitude N Frequency parameter / adjustment mark N

[0063] Through the above-mentioned mapping table between wave positions and frequencies, the frequency range available for each wave position is clarified. That is, when the beam serving this wave position receives signals within the same frequency range as or adjacent to the ground network, the satellite beam at this wave position will not be affected by the concentrated interference of the cellular terminal and will not cause interference to the ground network.

[0064] Furthermore, the mapping table between wave positions and frequencies is obtained by estimating or simulating the geographical isolation distance of the ground network shared by the wave position and frequency based on the fifth information related to the satellite and the ground network; wherein the geographical isolation distance corresponding to each wave position is the geographical isolation distance corresponding to the position with the most serious uplink interference within the time range from entry, overhead to exit of the corresponding wave position, and the geographical isolation distance meets the compatibility requirements of the same frequency and adjacent frequency between the satellite and the ground.

[0065] In the embodiment of the present invention, the mapping table between the wave position and the frequency depends on the geographical isolation distance of the ground network shared by the wave position and the frequency. When the geographical isolation distance is large enough to meet the satellite-ground frequency compatibility requirement, the wave position can use the same frequency of the ground network; when the geographical isolation distance cannot meet the satellite-ground frequency compatibility requirement, but the geographical isolation distance is large enough to meet the satellite-ground adjacent frequency compatibility requirement, the wave position can use the ground network adjacent frequency.

[0066] It should be noted that the geographical isolation distance that meets the compatibility requirements of satellite-ground co-frequency and adjacent frequencies can be obtained through theoretical estimation or calculation and simulation of the fifth information related to the satellite and ground network based on the satellite-ground intelligent cooperation network elements.

[0067] Among them, the fifth information includes: radio frequency information such as effective isotropic radiated power (EIRP) of satellites and ground networks, interference threshold, sidelobe suppression, adjacent channel leakage ratio (ACLR), satellite beam coverage information, ground network deployment information, etc.

[0068] Since the satellite is moving at high speed, in order to reduce the implementation complexity, the position where the uplink interference is the most serious within the time range from entry, overhead to exit of a certain wave position is considered as a representative, and compatibility analysis is performed based on this position. At this position, the satellite-ground compatibility for a certain wave position is the most stringent, and the geographical isolation distance is the largest, which can meet the satellite-ground co-frequency and adjacent frequency compatibility requirements at any position when the satellite moves at high speed.

[0069] Since the mapping table between wave positions and frequencies needs to include all wave positions within the satellite coverage range, the amount of data is large. In the embodiment of the present invention, the position with the most serious uplink interference within the time range from entry, overhead to exit of the wave position is taken as a representative, and the corresponding wave position and its corresponding frequency range at this position are determined to achieve a single mapping of wave position and frequency. The mapping table between the above wave position and frequency is formulated, which can reduce the amount of data in the mapping table between wave position and frequency.

[0070] Furthermore, a mapping table between wave positions and frequencies is sent by a first non-ground network base station on the ground or a satellite-ground intelligent collaborative network element according to a set sending period; wherein the set sending period is less than a preset satellite movement time, and the wave positions indicated in the mapping table include the wave positions covered by the satellite within the satellite movement time.

[0071] Specifically, a first non-ground network base station or a satellite-ground intelligent collaborative network element on the ground uploads first information carrying a mapping table between wave positions and frequencies to the satellite through a measurement and control link or a feeder link; the satellite platform or satellite payload on the satellite parses the first information and caches the mapping table between wave positions and frequencies obtained by the analysis.

[0072] In an embodiment of the invention, the first non-ground network base station or the satellite-ground intelligent cooperation network element on the ground needs to determine the wave position entry and the sending period in the mapping table between the wave position and the frequency before uploading the mapping table between the wave position and the frequency. Among them, a wave position entry includes the third information of a wave position and the fourth information of the frequency range of the wave position.

[0073] For example, due to the high-speed movement of low-orbit satellites and a large coverage area, the corresponding wave positions at different times are different. In order to ensure that the satellite platform or satellite payload can timely confirm the frequency range corresponding to its beam service wave position by checking the mapping table between wave positions and frequencies, the wave position entry N of the mapping table between wave positions and frequencies should be the total set of wave positions that the satellite can cover within the set satellite movement time t, wherein the sending period T of the mapping table between wave positions and frequencies should be less than the set satellite movement time t. After time T, the first non-ground network base station on the ground or the satellite-ground intelligent collaboration network element will send a new mapping table between wave positions and frequencies, and the wave positions indicated in the newly sent mapping table between wave positions and frequencies have no overlapping relationship with the wave positions indicated in the mapping table between wave positions and frequencies sent in the previous sending period. It should be noted that the wave position entry N and the sending period T of the mapping table between wave positions and frequencies depend on factors such as the bearer link bandwidth and the size of the on-board storage space. For example, the larger the bearer link bandwidth and the larger the on-board storage space, the larger the wave position entry N of the mapping table between wave positions and frequencies and the longer the sending period T.

[0074] Specifically, the frequency configuration of the beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information includes:

[0075] Determining the uplink beam pointing position and beam hopping time of the next stage according to the beam hopping pattern;

[0076] Determine, according to the mapping table between the beam position and the frequency, the frequency range required to be configured for the beam digital filtering function corresponding to the beam position pointed by the uplink beam;

[0077] The uplink beam pointing wave position, the beam hopping time and the frequency range are used to perform frequency configuration on the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position.

[0078] In the embodiment of the present invention, the beam hopping pattern specifies the directional wave position of each beam in each time slot / subframe service within a period of time, and performs corresponding uplink and downlink service transmission at the specified wave position according to the beam hopping pattern. If it is in transparent forwarding mode, the beam hopping pattern is formulated by the first non-ground network base station on the ground, and the beam hopping pattern needs to be transmitted to the satellite platform / satellite payload of the satellite through the measurement and control link or the feeder link for analysis, and the uplink beam hopping direction and the corresponding beam hopping time are solved.

[0079] like Figure 5 and Figure 6 As shown, in the transparent forwarding mode, after the first non-ground network base station on the ground or the satellite-ground intelligent collaborative network element formulates a mapping table between the wave position and the frequency, it is uploaded to the satellite through the feeding or measurement and control link, and through the feeding or measurement and control baseband on the satellite, the parsing module receives and parses the mapping table between the wave position and the frequency, and sends it to the beam digital filter configuration solving module on the satellite for local caching; at the same time, the wave control unit on the satellite calculates the uplink beam pointing wave position and the beam hopping time according to the beam hopping pattern, and sends the calculation result to the beam digital filter configuration solving module; the beam digital filter configuration solving module combines the uplink beam pointing wave position and the beam hopping time obtained by the above calculation and the mapping table between the wave position and the frequency cached locally, and solves the configurable frequency range and configuration adjustment time (i.e. the above-mentioned beam hopping time) of the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position, thereby performing frequency configuration on the corresponding beam digital filtering function. After the frequency configuration of the beam digital filtering function takes effect, different beams under the entire satellite can receive different frequency ranges, solving the contradiction between satellite coverage and spectrum utilization under the existing single interference avoidance method of satellite-ground frequency sharing, and realizing the coexistence of satellite and ground adjacent frequencies under the coverage of the entire satellite.

[0080] If it is the on-board regeneration mode, the mapping table between the beam position and the frequency is formulated and sent by the satellite-ground intelligent cooperation network element, and the beam hopping pattern is formulated and sent by the second non-ground network base station on the satellite. At this time, the second non-ground network base station can directly send the beam hopping pattern to the beam control unit to calculate the uplink beam pointing beam position and beam hopping time, such as Figure 7 As shown, the subsequent process is as described above and will not be repeated here.

[0081] It should be noted that the term "satellite-borne second non-terrestrial network base station" can also be described as "satellite-borne base station" and "satellite-borne NTN base station", and the three can be used interchangeably. The term "ground-borne first non-terrestrial network base station" can also be described as "ground-borne NTN base station", and the two can be used interchangeably, and no specific limitation is made in the embodiments of the present invention.

[0082] Specifically, determining the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed to by the uplink beam according to the mapping table between the wave position and the frequency includes:

[0083] Writing a mapping table between wave positions and frequencies in the currently received first information into a local cache; wherein the local cache also stores a mapping table between wave positions and frequencies received last time;

[0084] Matching the mapping table between the wave position and frequency received last time with the wave position pointed by the uplink beam;

[0085] When the mapping table between the wave position and the frequency received last time does not have a wave position that matches the wave position pointed to by the uplink beam, determining the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed to by the uplink beam according to the mapping table between the wave position and the frequency currently received, and deleting the mapping table between the wave position and the frequency received last time from the local cache;

[0086] When the mapping table between the wave position received last time and the frequency contains a wave position that matches the wave position to which the uplink beam is pointed, the frequency range required to be configured for the beam digital filtering function corresponding to the wave position to which the uplink beam is pointed is determined based on the mapping table between the wave position received last time and the frequency.

[0087] In an embodiment of the present invention, the mapping table between the wave position and the frequency adopts a soft switching method, and the mapping table between the wave position and the frequency sent in the previous sending cycle (hereinafter referred to as the old mapping table) and the mapping table between the wave position and the frequency sent in the current sending cycle (hereinafter referred to as the new mapping table) are connected, and the wave positions indicated in the old and new mapping tables have no overlap. When switching between the old and new mapping tables, the satellite platform or the satellite payload caches the two old and new mapping tables until all the wave positions in the old mapping table cannot be served. At this time, the old mapping table is discarded, and the new mapping table is enabled to perform frequency configuration of the beam digital filtering function.

[0088] Further, the adopting of the uplink beam pointing wave position, the beam hopping time and the frequency range to perform frequency configuration on the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position includes:

[0089] According to the uplink beam pointing wave position, the beam hopping time and the frequency range, the frequency configuration corresponding to each uplink beam pointing wave position in the next stage is sent to the corresponding beam digital filtering function for frequency configuration in advance of the first set time.

[0090] The embodiment of the present invention takes into account that the instruction transmission and configuration of the beam digital filtering function sliding window requires a certain delay, which is set to Δt. The satellite platform / satellite payload will send the frequency configuration corresponding to each beam in the next stage to the beam digital filtering function of the ADC in advance Δt for configuration.

[0091] Compared with the prior art, the embodiment of the present invention calculates the uplink beam pointing wave position, beam hopping time and frequency range based on the mapping table between wave position and frequency and the beam hopping pattern, and performs frequency configuration on the corresponding beam digital filtering function, so that the satellite's beam digital filtering function can adjust the filtering frequency range as needed according to the interference relationship between the uplink beam pointing wave position and the cellular network, realize adjacent frequency deployment at the wave position of the near ground network, and realize same frequency deployment at the wave position of the far ground network, that is, the satellite and the ground co-exist with the same adjacent frequency under the coverage of the whole satellite, effectively improving the satellite coverage range and spectrum utilization rate, taking into account the two requirements of spectrum utilization rate and satellite coverage range, and solving the problem of contradiction between satellite coverage and spectrum utilization rate under the existing single interference avoidance mode of satellite-ground frequency sharing.

[0092] Secondly, because the satellite beam matches the corresponding frequency range when pointing to a fixed area based on the mapping table between the uploaded wave position and frequency, the digital filtering function sliding window corresponding to each beam is dynamically adjusted to achieve different frequency ranges received by different beams under the whole satellite, and the same or adjacent frequency relationship is established with the ground as needed. Without dynamically changing the overall frequency configuration of the ground network, the satellite network related configuration is dynamically adjusted to achieve dynamic frequency sharing, which is easier to implement. It can be applied to scenarios where user terminals (such as mobile phones) are directly connected to satellites below 6GHz, where low-frequency band resources are tight and spectrum resource utilization is low, reducing the difficulty of low-orbit satellite networks to allocate independent frequency bands for user terminals.

[0093] See also Figure 8 , Figure 8 The present invention provides a structural block diagram of a satellite-ground uplink frequency sharing device, wherein the satellite-ground uplink frequency sharing device includes:

[0094] A first information receiving module 11 is used to receive first information; the first information includes a mapping table between wave positions and frequencies;

[0095] A second information receiving module 12, configured to receive second information; the second information includes a beam hopping pattern;

[0096] The digital filtering configuration module 13 is used to perform frequency configuration on the beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information.

[0097] In an optional embodiment, the digital filtering configuration module 13 includes:

[0098] A beam calculation unit, used to determine the uplink beam pointing position and beam hopping time of the next stage according to the beam hopping pattern;

[0099] A frequency range determination unit, used to determine the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed by the uplink beam according to the mapping table between the wave position and the frequency;

[0100] The frequency configuration unit is used to use the uplink beam pointing wave position, the beam hopping time and the frequency range to perform frequency configuration on the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position.

[0101] In an optional embodiment, the frequency range determining unit includes:

[0102] A cache subunit, used to write the mapping table between the wave position and the frequency in the first information currently received into the local cache; wherein the mapping table between the wave position and the frequency received last time is also stored in the local cache;

[0103] A matching subunit, used for matching the mapping table between the wave position and the frequency received last time with the wave position pointed by the uplink beam;

[0104] A first frequency range determination subunit is used to determine the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed to by the uplink beam according to the mapping table between the wave position and the frequency currently received when there is no wave position matching the wave position pointed to by the uplink beam in the mapping table between the wave position and the frequency received last time, and to delete the mapping table between the wave position and the frequency received last time from the local cache;

[0105] The second frequency range determination subunit is used to determine the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed by the uplink beam according to the mapping table between the wave position and frequency received last time, when there is a wave position matching the wave position pointed by the uplink beam in the mapping table between the wave position and frequency received last time.

[0106] In an optional embodiment, the frequency configuration unit includes:

[0107] The advance configuration subunit is used to send the frequency configuration corresponding to each uplink beam pointing wave position in the next stage to the corresponding beam digital filtering function for frequency configuration in advance of the first set time according to the uplink beam pointing wave position, the beam jump time and the frequency range.

[0108] In an optional embodiment, the mapping table includes third information indicating a wave position and fourth information indicating a frequency range of the wave position.

[0109] In an optional embodiment, the third information includes a wave position number or indicates the longitude and latitude of the wave position area; the fourth information includes a readable frequency parameter of the beam digital filtering function or an adjustment mark indicating the digital filtering frequency range.

[0110] In an optional embodiment, the mapping table is sent by a first non-ground network base station on the ground or a satellite-ground intelligent collaborative network element according to a set sending period; wherein the set sending period is less than a preset satellite movement time, and the wave positions indicated in the mapping table include the wave positions covered by the satellite within the satellite movement time.

[0111] In an optional embodiment, the beam hopping pattern is formulated and sent by a first non-terrestrial network base station on the ground or a second non-terrestrial network base station on board a satellite.

[0112] In an optional embodiment, the mapping table is obtained by estimating or simulating the geographical isolation distance of the ground network sharing the wave position and frequency based on the fifth information related to the satellite and the ground network; wherein the geographical isolation distance corresponding to each wave position is the geographical isolation distance corresponding to the position with the most serious uplink interference within the time range from the corresponding wave position entering, passing through to exiting, and the geographical isolation distance meets the satellite-ground co-frequency\adjacent frequency compatibility requirements.

[0113] In an optional embodiment, the fifth information includes: effective isotropic radiated power of the satellite and the ground network, interference threshold, sidelobe suppression, adjacent channel leakage ratio, satellite beam coverage information, and ground network deployment information.

[0114] It should be noted that the working process of each module in the satellite-to-ground uplink frequency sharing device described in the embodiment of the present invention can refer to the working process of the satellite-to-ground uplink frequency sharing method described in the above embodiment, and the technical effect achieved is also the same as the satellite-to-ground uplink frequency sharing method described in the above embodiment, which will not be repeated here.

[0115] See also Fig. 9 , Fig. 9 1 is a structural block diagram of a satellite-to-ground uplink frequency sharing device provided in an embodiment of the present invention. The satellite-to-ground uplink frequency sharing device includes a processor 21, a memory 22, and a computer program stored in the memory 22 and executable on the processor 21. When the processor 21 executes the computer program, the steps in the above-mentioned satellite-to-ground uplink frequency sharing method embodiments are implemented, such as steps S11 to S13.

[0116] Exemplarily, the computer program may be divided into one or more modules / units, which are stored in the memory 22 and executed by the processor 21 to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program in the satellite-to-ground uplink frequency sharing device.

[0117] The satellite-to-ground uplink frequency sharing device may include, but is not limited to, a processor 21 and a memory 22. Those skilled in the art may understand that the schematic diagram is only an example of the satellite-to-ground uplink frequency sharing device and does not constitute a limitation on the satellite-to-ground uplink frequency sharing device. The satellite-to-ground uplink frequency sharing device may include more or fewer components than shown in the diagram, or may combine certain components, or different components. For example, the satellite-to-ground uplink frequency sharing device may also include input and output devices, network access devices, buses, etc.

[0118] The processor 21 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor 21 is the control center of the satellite-to-ground uplink frequency sharing device, and uses various interfaces and lines to connect various parts of the entire satellite-to-ground uplink frequency sharing device.

[0119] The memory 22 can be used to store the computer program and / or module. The processor 21 realizes various functions of the satellite-ground uplink frequency sharing device by running or executing the computer program and / or module stored in the memory 22 and calling the data stored in the memory 22. The memory 22 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 22 can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0120] Wherein, if the module / unit integrated in the satellite-ground uplink frequency sharing device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor 21, the steps of the above-mentioned method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0121] It should be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0122] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, many improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A satellite-to-ground uplink frequency sharing method, characterized in that: include: Receive first information; the first information includes a mapping table between wave positions and frequencies; receiving second information; the second information comprising a beam hopping pattern; The frequency configuration of the beam digital filtering function is performed according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information.

2. The satellite-to-ground uplink frequency sharing method according to claim 1, characterized in that: The frequency configuration of the beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information includes: Determining the uplink beam pointing position and beam hopping time of the next stage according to the beam hopping pattern; Determine, according to the mapping table between the beam position and the frequency, the frequency range required to be configured for the beam digital filtering function corresponding to the beam position pointed by the uplink beam; The uplink beam pointing wave position, the beam hopping time and the frequency range are used to perform frequency configuration on the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position.

3. The satellite-to-ground uplink frequency sharing method according to claim 2, characterized in that: The step of determining, according to the mapping table between the beam position and the frequency, a frequency range required to be configured for the beam digital filtering function corresponding to the beam position pointed to by the uplink beam comprises: Writing a mapping table between wave positions and frequencies in the currently received first information into a local cache; wherein the local cache also stores a mapping table between wave positions and frequencies received last time; Matching the mapping table between the wave position and frequency received last time with the wave position pointed by the uplink beam; When the mapping table between the wave position and the frequency received last time does not have a wave position that matches the wave position pointed to by the uplink beam, determining the frequency range required to be configured for the beam digital filtering function corresponding to the wave position pointed to by the uplink beam according to the mapping table between the wave position and the frequency currently received, and deleting the mapping table between the wave position and the frequency received last time from the local cache; When the mapping table between the wave position received last time and the frequency contains a wave position that matches the wave position to which the uplink beam is pointed, the frequency range required to be configured for the beam digital filtering function corresponding to the wave position to which the uplink beam is pointed is determined based on the mapping table between the wave position received last time and the frequency.

4. The satellite-to-ground uplink frequency sharing method according to claim 2, characterized in that: The frequency configuration of the beam digital filtering function corresponding to the corresponding uplink beam pointing wave position by using the uplink beam pointing wave position, the beam hopping time and the frequency range includes: According to the uplink beam pointing wave position, the beam hopping time and the frequency range, the frequency configuration corresponding to each uplink beam pointing wave position in the next stage is sent to the corresponding beam digital filtering function for frequency configuration in advance of the first set time.

5. The satellite-to-ground uplink frequency sharing method according to claim 1, characterized in that: The mapping table includes at least one third information indicating a wave position and at least one fourth information indicating a frequency range of the wave position.

6. The satellite-to-ground uplink frequency sharing method according to claim 5, characterized in that: The third information includes the wave position number or the longitude and latitude indicating the wave position area; the fourth information includes the frequency parameter readable by the beam digital filtering function or the adjustment mark indicating the digital filtering frequency range.

7. The satellite-to-ground uplink frequency sharing method according to claim 5, characterized in that: The mapping table is sent by the first non-ground network base station on the ground or the satellite-ground intelligent collaborative network element according to a set sending period; wherein the set sending period is less than the preset satellite movement time, and the wave positions indicated in the mapping table include the wave positions covered by the satellite within the satellite movement time.

8. The satellite-to-ground uplink frequency sharing method according to claim 1, characterized in that: The beam hopping pattern is formulated and sent by a first non-terrestrial network base station on the ground or a second non-terrestrial network base station on the satellite.

9. The satellite-to-ground uplink frequency sharing method according to claim 7, characterized in that: The mapping table is obtained by estimating or simulating the geographical isolation distance of the ground network sharing the wave position and frequency based on the fifth information related to the satellite and the ground network; wherein the geographical isolation distance corresponding to each wave position is the geographical isolation distance corresponding to the position with the most serious uplink interference within the time range from the corresponding wave position entering, passing the top to leaving the country, and the geographical isolation distance meets the satellite-ground co-frequency\adjacent frequency compatibility requirements.

10. The satellite-to-ground uplink frequency sharing method according to claim 9, characterized in that: The fifth information includes: effective isotropic radiated power of satellites and ground networks, interference threshold, sidelobe suppression, adjacent channel leakage ratio, satellite beam coverage information, and ground network deployment information.

11. A satellite-to-ground uplink frequency sharing device, characterized in that: include: A first information receiving module, used to receive first information; the first information includes a mapping table between wave positions and frequencies; A second information receiving module, configured to receive second information; the second information includes a beam hopping pattern; The digital filtering configuration module is used to perform frequency configuration on the beam digital filtering function according to the mapping table between the beam position and the frequency in the first information and the beam hopping pattern in the second information.

12. A satellite-to-ground uplink frequency sharing device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the satellite-to-ground uplink frequency sharing method as claimed in any one of claims 1 to 10 when executing the computer program.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the satellite-to-ground uplink frequency sharing method according to any one of claims 1 to 10.

14. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the satellite-to-ground uplink frequency sharing method as described in any one of claims 1 to 10 is implemented.

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