Beam bandwidth sharing method and system supporting multiple services

Abstract

The present invention provides a beam bandwidth sharing method and system supporting multiple services, including: obtaining the compatible standards of satellite payload phased array antenna and the number of beams corresponding to each standard; obtaining a service bandwidth signal, wherein the service bandwidth signal is synthesized into multiple service signals; dividing the bandwidth of each beam to obtain multiple sub-bands; and using the sub-bands to allocate resources required for the service bandwidth signal. By dividing the bandwidth of each beam and using the divided sub-bands to allocate resources required for the service bandwidth signal, any sub-band in all beams under different standards can support different services, thereby realizing the sharing of the total beam frequency band by multiple services, effectively improving the utilization rate of resources, and being able to flexibly adjust the division scheme according to actual service needs, solving the problem of poor resource allocation flexibility and serious resource waste under the existing bandwidth allocation scheme.

Description

Technical Field

[0001] The present invention relates to the field of satellite communication technology, and in particular to a beam bandwidth sharing method and system supporting multiple services. Background Art

[0002] In the satellite coverage area, the service needs of terminal users of different standards vary greatly, with uneven distribution in time and space, and the types of services also show a trend of diversification. The continuous increase in user demand for services has formed a sharp contradiction with the limited capacity and difficulty of expansion of satellite systems. In order to make limited satellite resources effectively support user business needs, it is necessary to achieve joint coverage of multiple satellites and multiple beams, realize wireless resource sharing and joint management, and jointly provide users with convenient broadband access services.

[0003] At present, in order to ensure the communication quality of different user groups, different users, and different business needs, a management mode based on QOS (Quality of Service) is generally adopted when allocating bandwidth. That is, different QOS attributes are formulated for different user groups, different users, and different business needs. When allocating resources, resources can be scheduled and allocated according to QOS attributes to meet the needs of different businesses.

[0004] However, existing bandwidth allocation schemes generally only allocate bandwidth within a single satellite beam, and beams under different standards cannot support the services of different operators, which not only makes resource allocation inflexible but also causes resource waste. Summary of the invention

[0005] The object of the present invention is to provide a beam bandwidth sharing method and system supporting multiple services, so as to solve the problems of poor resource allocation flexibility and serious resource waste under the existing bandwidth allocation scheme.

[0006] In order to solve the above technical problems, the present invention provides a beam bandwidth sharing method supporting multiple services, comprising:

[0007] Obtain the compatible standards of satellite payload phased array antenna and the number of beams corresponding to each standard;

[0008] Acquire a service bandwidth signal, wherein the service bandwidth signal is synthesized into a plurality of service signals;

[0009] The bandwidth of each beam is divided to obtain a plurality of sub-bands;

[0010] Sub-bands are used to allocate resources required for service bandwidth signals.

[0011] Optionally, in the beam bandwidth sharing method supporting multiple services, the method for acquiring the service bandwidth signal includes:

[0012] Multiple baseband service signals are synthesized into a service bandwidth signal in the digital domain, wherein the sampling rate of the baseband output signal is consistent with the sampling rate of the service bandwidth signal of the beam, and different service signals are shifted in frequency.

[0013] Optionally, in the beam bandwidth sharing method supporting multiple services, the method of dividing the bandwidth of each beam to obtain multiple sub-bands includes:

[0014] Configure the number of taps and coefficients of the digital filter to determine the bandwidth and operating frequency of the sub-band;

[0015] The bandwidth of the beam is divided using the configured digital filter, where:

[0016] If the number of taps of the digital filter is consistent, the bandwidth of the subband is consistent;

[0017] If the number of taps of the digital filter is inconsistent, the bandwidth of the sub-band must be inconsistent.

[0018] Optionally, in the beam bandwidth sharing method supporting multiple services, there is a transition band between adjacent sub-bands, and the bandwidth of the transition band is smaller than the bandwidth of the sub-band.

[0019] Optionally, in the beam bandwidth sharing method supporting multiple services, the bandwidth of the beam is set to BW, and the bandwidth of the transition band is set to BW. 0 , if the digital filter divides the beam into s sub-bands evenly, then the service bandwidth BW of each sub-band is n =BW / s-BW 0 .

[0020] Optionally, in the beam bandwidth sharing method supporting multiple services, the method of allocating resources required for multiple services by using sub-bands includes:

[0021] According to the standard corresponding to the beam, set the service type supported by the subband;

[0022] Service resources are allocated according to service requirements and the types of services supported by different sub-bands.

[0023] Optionally, in the beam bandwidth sharing method supporting multiple services, the method for setting the service type supported by the subband according to the standard corresponding to the beam includes:

[0024] Different beams under the same standard support different types of services or the same type of services;

[0025] Different subbands under the same beam support different types of services or the same type of services.

[0026] Optionally, in the beam bandwidth sharing method supporting multiple services, the method for allocating service resources according to service requirements and service types supported by different sub-bands includes:

[0027] Confirm the service type and bandwidth of each service signal on the service bandwidth signal;

[0028] Confirm the service type and bandwidth of each sub-band;

[0029] A subband with the same service type and a bandwidth not less than the service signal bandwidth is matched with the service signal.

[0030] Optionally, in the beam bandwidth sharing method supporting multiple services, the method for allocating service resources according to service requirements and service types supported by different sub-bands further includes:

[0031] Confirm the service type and bandwidth of each service signal on the service bandwidth signal;

[0032] Selecting a beam according to the service type of the service signal;

[0033] The selected beam is divided according to the bandwidth of the service signal so that the bandwidth of the sub-band is not less than the bandwidth of the service signal;

[0034] The service signal is matched with the divided sub-bands.

[0035] In order to solve the above technical problems, the present invention also provides a beam bandwidth sharing system supporting multiple services, which is used to implement the beam bandwidth sharing method supporting multiple services as described in any of the above items, and the beam bandwidth sharing system supporting multiple services includes a phased array antenna, a segmentation controller and a digital filter; the segmentation controller is used to obtain the standard of the phased array antenna and the number of beams and service requirements corresponding to each standard, and generate a beam segmentation scheme according to the service requirements; the digital filter is used to segment the bandwidth of each beam according to the beam segmentation scheme.

[0036] The beam bandwidth sharing method and system supporting multiple services provided by the present invention include: obtaining the compatible standards of the satellite payload phased array antenna and the number of beams corresponding to each standard; obtaining a service bandwidth signal, wherein the service bandwidth signal is synthesized into multiple service signals; dividing the bandwidth of each beam to obtain multiple sub-bands; and using the sub-bands to allocate resources required for the service bandwidth signal. By dividing the bandwidth of each beam and using the divided sub-bands to allocate resources required for the service bandwidth signal, any sub-band in all beams under different standards can support different services, thereby realizing the sharing of the total beam frequency band by multiple services, effectively improving the utilization rate of resources, and being able to flexibly adjust the division scheme according to actual service needs, solving the problem of poor resource allocation flexibility and serious resource waste under the existing bandwidth allocation scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A flowchart of a beam bandwidth sharing method supporting multiple services provided in this embodiment;

[0038] Figure 2 A schematic diagram of a solution for implementing multi-service shared receiving bandwidth provided in this embodiment;

[0039] Figure 3 A schematic diagram of a solution for implementing multi-service sharing of transmission bandwidth provided in this embodiment;

[0040] Figure 4 A schematic diagram of a service allocation structure provided in this embodiment;

[0041] Figure 5 A schematic diagram of another service allocation structure provided in this embodiment;

[0042] Figure 6 A schematic diagram of the structure of a beam bandwidth sharing system supporting multiple services provided in this embodiment. DETAILED DESCRIPTION

[0043] The following is a further detailed description of the beam bandwidth sharing method and system supporting multiple services proposed in the present invention in combination with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the accompanying drawings is often a part of the actual structure. In particular, the emphasis of each accompanying drawing is different, and sometimes different proportions are used.

[0044] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present invention are used to distinguish similar objects in order to describe the embodiments of the present invention, rather than to describe a specific order or sequence. It should be understood that the structures used in this way can be interchanged under appropriate circumstances. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] This embodiment provides a beam bandwidth sharing method supporting multiple services, such as Figure 1 As shown, including:

[0046] S1, obtain the compatible standards of the satellite payload phased array antenna and the number of beams corresponding to each standard;

[0047] S2, obtaining a service bandwidth signal, wherein the service bandwidth signal is synthesized into a plurality of service signals;

[0048] S3, dividing the bandwidth of each beam to obtain multiple sub-bands;

[0049] S4: Allocate resources required for the service bandwidth signal using sub-bands.

[0050] The beam bandwidth sharing method supporting multiple services provided in this embodiment divides the bandwidth of each beam and uses the sub-bands obtained by the division to allocate resources required for the service bandwidth signal, so that any sub-band in all beams under different standards can support different services, thereby realizing the sharing of the total beam frequency band by multiple services, effectively improving the utilization rate of resources, and being able to flexibly adjust the division plan according to actual business needs, solving the problems of poor resource allocation flexibility and serious resource waste under the existing bandwidth allocation plan.

[0051] Specifically, in this embodiment, step S1, the method for obtaining the standards compatible with the satellite payload phased array antenna and the number of beams corresponding to each standard includes: obtaining all standards compatible with the satellite payload phased array antenna and the number of beams corresponding to each standard, and then obtaining information such as the total number of beams and the total beam frequency band. In a specific embodiment, there are two standards compatible with the satellite payload phased array antenna, which are respectively recorded as standard one and standard two. The number of beams corresponding to standard one is n 1 , the number of beams corresponding to standard 2 is n 2 , the total number of beams N = n 1 +n 2 , where n 1 and n 2The value of can be set according to actual conditions, and in different application scenarios, there may be multiple standards or a single standard. The beam segmentation scheme provided in this application does not limit the number of standards and the number of beams under each standard.

[0052] Furthermore, in this embodiment, step S2, the method for obtaining a service bandwidth signal includes: synthesizing multiple service signals of the baseband into one service bandwidth signal in the digital domain, wherein the sampling rate of the output signal of the baseband is consistent with the sampling rate of the service bandwidth signal of the beam, and different service signal frequencies are shifted, so that the service bandwidth signal is synthesized into multiple service signals.

[0053] Specifically, in a specific embodiment, Figure 2 As shown, the receiving end has 32 receiving beams (receiving beam 1, receiving beam 2, ..., receiving beam 32), each receiving beam is used to receive the service bandwidth signal. Since multiple service signals are synthesized in the service bandwidth signal, and the frequencies of each service signal are shifted, after filtering through a digital filter, the service signals in different frequency ranges can be extracted separately. In this way, each receiving beam can receive multiple service signals, thereby improving resource utilization.

[0054] In another specific embodiment, Figure 3 As shown, the transmitting end synthesizes multiple service signals (baseband signals), such as synthesizing four baseband signals in the range of 0.5 to 19.5 MHz, to obtain a 20 MHz service bandwidth signal, wherein the frequency band range of each baseband signal does not overlap, so that the digital filter can separate the baseband signals during subsequent reception. This not only simplifies the signal synthesis process, but also simplifies the signal segmentation process, thereby effectively reducing the complexity and computational complexity of the system and improving communication efficiency.

[0055] Furthermore, in this embodiment, in step S3, the method of dividing the bandwidth of each beam to obtain a plurality of sub-bands includes:

[0056] S31, configuring the number of taps and coefficients of the digital filter to confirm the bandwidth and operating frequency of the sub-band.

[0057] Specifically, in this embodiment, since the frequency band range of each service signal in the service bandwidth signal is known, in order to separate each service signal from the service bandwidth signal, the number of taps and coefficients of the digital filter need to be configured so that each digital filter can separate one service signal. Since the beam is used to receive the service bandwidth signal, in order to separate the service signal, the beam bandwidth needs to be divided with the digital filter to obtain multiple sub-bands, each sub-band corresponding to one service signal.

[0058] S32, using the configured digital filter to divide the bandwidth of the beam, wherein if the number of taps of the digital filter is consistent, the bandwidth of the sub-band is consistent; if the number of taps of the digital filter is inconsistent, the bandwidth of the sub-band is inconsistent. Specifically, the number of taps determines the rectangular performance of the digital filter, and the coefficient is used to configure the working frequency of the digital filter.

[0059] Preferably, in order to ensure that the service signal obtained after filtering by the digital filter is complete and correct, in this embodiment, there is a transition band between adjacent sub-bands, and the bandwidth of the transition band is smaller than the bandwidth of the sub-band.

[0060] In practical applications, the beam division may be uniform or non-uniform, depending on the frequency band range of each service signal in the service bandwidth signal.

[0061] Assume that the bandwidth of the beam is BW and the bandwidth of the transition band is BW 0 , if the digital filter divides the beam into s sub-bands evenly, then the service bandwidth BW of each sub-band is n =BW / s-BW 0 At this time, the phased array antenna can support up to N×s types of services, where N is the total number of beams and s is the number of sub-bands obtained by dividing each beam. That is to say, by dividing each beam, different beams under the same standard can support different types of services, and different sub-bands under the same beam can support different types of services, which greatly improves the efficiency and flexibility of beam resource utilization.

[0062] Of course, for the non-uniform division scheme, the bandwidths of the transition bands may be consistent or different, and those skilled in the art can obtain a calculation method for the service bandwidth of each sub-band under the non-uniform division through the uniform division scheme.

[0063] In a specific embodiment, the Figure 3 The service bandwidth signal shown in FIG. 1 includes four service signals (baseband signals) in different frequency bands, and the frequency bandwidths of the four service signals are consistent (4 MHz) with a 1 MHz interval between them. Figure 4 As shown, after the synthesized service bandwidth signal passes through the configured digital filter, the four service signals are separated one by one, and then resource allocation is performed through sub-bands.

[0064] As Figure 4 An alternative to beam segmentation using digital filters is shown in Figure 5 As shown, DUC / DDC (digital up conversion / digital down conversion) can be added before the digital filter to make the segmentation of the digital filter more accurate.

[0065] Furthermore, in this embodiment, in step S4, the method of allocating resources required for multiple services by using sub-bands includes:

[0066] S41, setting the service type supported by the subband according to the standard corresponding to the beam.

[0067] Since the beam is divided by the digital filter according to business needs, multiple sub-bands are obtained, and each sub-band can correspond to a business signal, that is, a business type. Therefore, different beams under the same standard can support different types of services or the same type of services, and different sub-bands under the same beam can support different types of services or the same type of services, thereby realizing flexible configuration of the number of services and business bandwidth, greatly improving the efficiency and flexibility of beam resource utilization.

[0068] S42, allocating service resources according to service requirements and service types supported by different sub-bands.

[0069] In a specific embodiment, the method for allocating service resources includes: first, confirming the service type and bandwidth of each service signal on the service bandwidth signal; then, confirming the service type and bandwidth of each sub-band; finally, matching the sub-band with the same service type and bandwidth not less than the service signal bandwidth with the service signal. In this way, the beam segmentation does not depend on the service demand, and the beam can be segmented in advance according to a preset method, and then the sub-band is matched according to each service signal in the actual service bandwidth signal. This method belongs to semi-dynamic allocation, which is suitable for scenarios with relatively stable and single service types and bandwidths, and can save the calculation amount of dynamic sub-band segmentation.

[0070] In another specific embodiment, the method for allocating service resources also includes: first, confirming the service type and bandwidth of each service signal on the service bandwidth signal; then, selecting a beam according to the service type of the service signal; then, dividing the selected beam according to the bandwidth of the service signal so that the bandwidth of the sub-band is not less than the bandwidth of the service signal; finally, matching the service signal with the divided sub-band. In this way, it is necessary to first select the beam to be divided according to the type of the service signal, and then divide the beam according to the bandwidth of the service signal. Therefore, the division of the beam depends on the service demand, and the beam needs to be dynamically divided according to the service bandwidth signal received each time. It is suitable for scenarios where the service type and bandwidth are unstable and have large changes, and can fully mobilize the utilization rate of beam resources.

[0071] Of course, in other scenarios, the above two methods can also be combined, that is, partially adopting a semi-dynamic allocation method and partially adopting a dynamic allocation method, so as to ensure the utilization of beam resources while reducing the calculation amount of dynamic segmentation as much as possible, thereby reducing system power consumption while ensuring the flexibility of service sharing.

[0072] This embodiment also provides a beam bandwidth sharing system supporting multiple services, which is used to implement the beam bandwidth sharing method supporting multiple services as described above. Figure 6 As shown, the beam bandwidth sharing system supporting multiple services includes a phased array antenna, a segmentation controller and a digital filter; the segmentation controller is used to obtain the standard of the phased array antenna and the number of beams and service requirements corresponding to each standard, and generate a beam segmentation scheme according to the service requirements; the digital filter is used to segment the bandwidth of each beam according to the beam segmentation scheme.

[0073] In practical applications, the layout of phased array antennas is well known to those skilled in the art; the segmentation controller can specifically be a control chip, or a circuit integrated in the control chip, and the segmentation controller should store a preset segmentation algorithm to segment the beam according to the segmentation algorithm; the number of digital filters can be multiple, so as to separately segment multiple service signals, and the digital filter should be controlled by the segmentation controller to perform segmentation and extraction of signals in different frequency band ranges under the instructions of the segmentation controller. The specific connection method of each component is well known to those skilled in the art, and this application will not go into details. Of course, in other embodiments, the beam bandwidth sharing system supporting multiple services may also have other functional modules, and this application does not limit this.

[0074] The beam bandwidth sharing system supporting multiple services provided in this embodiment generates a beam splitting scheme according to service requirements through a splitting controller, and splits the bandwidth of each beam according to the beam splitting scheme through a digital filter, so that any sub-band in all beams under different standards can support different services, thereby realizing the sharing of the total beam frequency band by multiple services, effectively improving the utilization rate of resources, and being able to flexibly adjust the splitting scheme according to actual service requirements, thereby solving the problems of poor resource allocation flexibility and serious resource waste under the existing bandwidth allocation scheme.

[0075] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In addition, the different parts between the various embodiments can also be used in combination with each other, and the present invention is not limited to this.

[0076] The beam bandwidth sharing method and system supporting multiple services provided in this embodiment include: obtaining the compatible standards of the satellite payload phased array antenna and the number of beams corresponding to each standard; obtaining a service bandwidth signal, wherein the service bandwidth signal is synthesized into multiple service signals; dividing the bandwidth of each beam to obtain multiple sub-bands; and using the sub-bands to allocate resources required for the service bandwidth signal. By dividing the bandwidth of each beam and using the divided sub-bands to allocate resources required for the service bandwidth signal, any sub-band in all beams under different standards can support different services, thereby realizing the sharing of the total beam frequency band by multiple services, effectively improving the utilization rate of resources, and being able to flexibly adjust the division scheme according to actual service needs, solving the problem of poor resource allocation flexibility and serious resource waste under the existing bandwidth allocation scheme.

[0077] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A beam bandwidth sharing method supporting multiple services, characterized in that: include: Obtaining compatible standards of the satellite payload phased array antenna and the number of beams corresponding to each standard; obtaining a service bandwidth signal, wherein the service bandwidth signal is synthesized into multiple service signals; The bandwidth of each beam is divided to obtain a plurality of sub-bands; Allocate resources required for service bandwidth signals using sub-bands; The step of allocating resources required for service bandwidth signals by using sub-bands includes: setting the service type supported by the sub-bands according to the standard corresponding to the beams; and allocating service resources according to service requirements and service types supported by different sub-bands.

2. The beam bandwidth sharing method supporting multiple services according to claim 1, characterized in that: The method for obtaining a service bandwidth signal comprises: synthesizing a plurality of service signals of a baseband into a service bandwidth signal in a digital domain, wherein a sampling rate of an output signal of the baseband is consistent with a sampling rate of a service bandwidth signal of a beam, and different service signals are shifted in frequency.

3. The beam bandwidth sharing method supporting multiple services according to claim 1, characterized in that: The method for dividing the bandwidth of each beam to obtain multiple sub-bands includes: configuring the number of taps and coefficients of a digital filter to confirm the bandwidth and operating frequency of the sub-band; dividing the bandwidth of the beam using the configured digital filter, wherein if the number of taps of the digital filter is consistent, the bandwidth of the sub-band is consistent; if the number of taps of the digital filter is inconsistent, the bandwidth of the sub-band is inconsistent.

4. The beam bandwidth sharing method supporting multiple services according to claim 1, characterized in that: There is a transition zone between adjacent sub-bands, and the bandwidth of the transition zone is smaller than the bandwidth of the sub-band.

5. The beam bandwidth sharing method supporting multiple services according to claim 4, characterized in that: The bandwidth of the beam is divided by a digital filter. Assume that the bandwidth of the beam is BW and the bandwidth of the transition band is BW0. If the digital filter divides the beam evenly into s sub-bands, the service bandwidth of each sub-band is BWn=BW / s-BW0.

6. The beam bandwidth sharing method supporting multiple services according to claim 1, characterized in that: The method for setting the service type supported by the subband according to the standard corresponding to the beam includes: different beams under the same standard support different types of services or the same type of services; different subbands under the same beam support different types of services or the same type of services.

7. The beam bandwidth sharing method supporting multiple services according to claim 1, characterized in that: The method for allocating service resources according to service requirements and service types supported by different sub-bands includes: confirming the service type and bandwidth of each service signal on the service bandwidth signal; confirming the service type and bandwidth of each sub-band; matching the sub-band with the same service type and bandwidth not less than the service signal bandwidth with the service signal.

8. The beam bandwidth sharing method supporting multiple services according to claim 1, characterized in that: The method for allocating service resources according to service requirements and service types supported by different sub-bands also includes: confirming the service type and bandwidth of each service signal on the service bandwidth signal; selecting a beam according to the service type of the service signal; dividing the selected beam according to the bandwidth of the service signal so that the bandwidth of the sub-band is not less than the bandwidth of the service signal; and matching the service signal with the divided sub-band.

9. A beam bandwidth sharing system supporting multiple services, used to implement the beam bandwidth sharing method supporting multiple services as claimed in any one of claims 1 to 8, characterized in that: The beam bandwidth sharing system supporting multiple services includes a phased array antenna, a segmentation controller and a digital filter; the segmentation controller is used to obtain the standards compatible with the phased array antenna and the number of beams and service requirements corresponding to each standard, and generate a beam segmentation scheme according to the service requirements; the digital filter is used to segment the bandwidth of each beam according to the beam segmentation scheme.

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