A multi-domain flexible application-oriented digital transparent processing implementation system and method

Abstract

A kind of digital transparent processing implementation system and method for multi-domain flexible application, utilize three-level mapping function to combine wideband digital channel processing and large-scale sub-band exchange to form integrated, multi-level, multi-dimensional processing architecture based on channel processing plane, beam processing plane and exchange processing plane, effectively meet the digital transparent processing forwarding demand of multi-domain flexible application facing the large number of ports, large port bandwidth, large processing capacity, can realize full array beam synthesis at system level, and sub-band exchange of full beam, full frequency, with good expansibility and system reliability, effectively break through the limitation of conventional processing implementation framework, data transmission node quantity and single node data transmission capacity etc., cannot realize the bottleneck of full feed source beam forming and sub-band flexible exchange function of full beam, full frequency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of digital transparent processing and forwarding, and particularly relates to a digital transparent processing system and method for multi-domain flexible application. BACKGROUND

[0002] With the rapid development of ground satellite communication application technology, the traditional communication satellite can only provide a fixed service mode of transponder, which has been far from meeting the needs of practical application. While continuously increasing the system capacity, the communication satellite requires to improve the flexibility of the system, that is, the satellite can dynamically adjust the on-board resources during the in-orbit service period, continuously provide satellite communication services, and realize the flexibility of the satellite.

[0003] The new generation of digital transparent processor using "digital transparent processing technology" adopts full-digital processing and forwarding technology, solves the problems of fixed forwarding mode, fewer forwarding paths and inability to dynamically adjust of the traditional analog transparent transponder, and has the ability of reconfiguring tasks in the life cycle and "flexible adjustment" while meeting the large-capacity forwarding. The system can greatly improve the flexibility of the satellite system, has the outstanding advantages of flexible allocation of frequency / power resources, flexible and variable link connection, strong multi-system support capability, flexible resource management and optimization, etc., so that the satellite can provide flexible system service area, working frequency, beam bandwidth, communication capacity adjustment and redistribution capability in orbit, and has the ability of business re-adjustment in orbit and the ability of gradual deployment of satellite coverage area adjustment.

[0004] In view of the demand for flexible application of communication satellites in frequency domain, time domain, space domain, power domain and service domain, a multi-level and multi-dimensional digital transparent processing implementation method based on digital channelization, transceiver grouping and mapping hybridization, combined with sub-band level beam forming and sub-band routing switching is proposed, which realizes the full-beam and full-band switching between the input and output ports of the antenna feed, and can meet the flexible application requirements of the system in frequency, power, beam and service, etc.

[0005] Document 1 "Analysis and Scheme Design of Mobile Communication Satellite Onboard Digital Processor Requirements" (Liu Naizheng, Chen Dong, Liang Zongchuang, Zhou Zhicheng) introduces the implementation architecture of a typical mobile communication satellite transponder, describes the digital processing flow including analog-to-digital conversion, digital branching, receiving DBF, return mapping, digital combining, analog-to-digital conversion and on-board switching, but does not explicitly introduce the interconnection relationship between each functional module and the detailed processing implementation scheme.

[0006] Patent 2 "A hybrid transparent forwarding method" (Zhang Chunhui, Li Hui, Ren Guoxiang, etc.) discloses a hybrid transparent forwarding method, which is based on the sub-band switching forwarding mode of digital transparent transponder, and increases the analog microwave matrix forwarding mode, which has the advantages of both traditional transparent transponder and processing transponder, avoids the limitation of physical layer signal system, supports fine-grained bandwidth flexible switching, and improves the support for high-reliability transmission applications. At the same time, the digital processing and switching method is adopted, and the beams between different ports or even the uplink and downlink beams in the same port can be independently set to work mode and processing bandwidth to meet their respective task requirements, and the application mode is flexible.

[0007] Patent 3 "A multi-domain flexible communication flexible forwarding processing system" (Hui Tengfei, Zhai Shenghua, Sun Hanwen, etc.) gives a satellite-ground synchronization method, realizes dynamic channelization switching, supports different switching relationships of each port sub-band at different times, realizes dynamic flexible forwarding combining time domain and frequency domain, and further improves the use efficiency of frequency resources and networking flexibility.

[0008] Patent 4 "Systems And Methods For Digital Processing of SatelliteCommunications Data" (Douglas T. Bell, Brian A. Clebowicz) introduces that the digital processing load for completing the sub-band spectrum processing of the uplink beam should include a digital channel analyzer, a digital switching matrix, and a digital synthesizer, and a digital load selectable configuration regeneration module as an extension of the conventional digital load, which is used to complete the modulation and demodulation processing of part or all of the spectrum, and explains the basic function modules of the digital load and the bandwidth and resource allocation process.

[0009] The above four existing technology documents or patents introduce related methods or processing system compositions for digital transparent processing or flexible forwarding processing. For example, document 1 introduces the implementation architecture of a typical mobile communication satellite transponder, but does not explicitly introduce the interconnection relationship between the function modules and the detailed processing implementation scheme; document 2 introduces a digital-analog hybrid processing system, which has the advantages of both traditional transparent transponder and processing transponder, and the application mode is more flexible than traditional transparent transponder; document 3 mainly introduces a satellite-ground synchronization method, which realizes dynamic channelization switching and supports different switching relationships of each port sub-band at different times, but does not contain a digital transparent forwarding processing method or implementation structure involving beam domain synthesis processing; document 4 introduces the composition of the digital processing load for completing the sub-band spectrum processing of the uplink beam, explains the basic function modules of the digital load and the bandwidth and resource allocation process, but does not involve the processing method or implementation architecture containing beam synthesis function. SUMMARY

[0010] In view of the above problems, the present application aims to provide a digital transparent processing implementation system and method for multi-domain flexible application, which solves the problem that the prior art cannot realize beamforming with full feed source array participation and full flexible switching of full beam and full frequency sub-band level beam due to the limitation of processing implementation architecture, data transmission node quantity, single node data transmission capacity and the like.

[0011] To achieve the above-mentioned purpose, the technical solution adopted by the present application comprises:

[0012] A digital transparent processing implementation system for multi-domain flexible application comprises a channel processing plane, a beam processing plane and a switching processing plane.

[0013] The channel processing plane comprises M channel processing units corresponding to M uplink ports and M downlink ports, each channel processing unit comprising an uplink channel processing node and a downlink channel processing node.

[0014] The beam processing plane comprises S beam processing units, each beam processing unit comprising an uplink beam processing part and a downlink beam processing part; the uplink beam processing part comprises M uplink port processing nodes, each uplink port processing node being connected to M uplink channel processing nodes; each uplink beam processing part further comprises R uplink beam processing nodes, each uplink beam processing node being connected to all uplink port processing nodes in the uplink beam processing part; the downlink beam processing part comprises M downlink port processing nodes, each downlink port processing node being connected to M downlink channel processing nodes; each downlink beam processing part further comprises R downlink beam processing nodes, each downlink beam processing node being connected to all downlink port processing nodes in the uplink beam processing part.

[0015] The switching processing plane comprises S' switching processing units, each switching processing unit comprising K switching processing nodes, each switching processing node being connected to all uplink beam processing nodes and all downlink beam processing nodes.

[0016] Preferably, S'xK>RxS.

[0017] Preferably, each uplink channel processing node comprises a series connection of an uplink channelization module and a receiving first-level sub-band mapping module, and each downlink channel processing node comprises a series connection of a transmitting first-level sub-band mapping module and a downlink channel synthesis module.

[0018] Preferably, any group of connected uplink port processing nodes and uplink beam processing nodes comprises a series connection of a receiving first-level beam synthesis module and a receiving second-level sub-band mapping module, and any group of connected downlink beam processing nodes and downlink port processing nodes comprises a series connection of a transmitting second-level sub-band mapping module and a transmitting third-level beam synthesis module.

[0019] Preferably, any group of connected uplink port processing nodes and uplink beam processing nodes comprises a receiving first level beam combining module, a receiving second level sub-band mapping module, a receiving second level beam combining module and a receiving third level sub-band mapping module in series, and any group of connected downlink beam processing nodes and downlink port processing nodes comprises a transmitting third level sub-band mapping module, a transmitting second level beam combining module, a transmitting second level sub-band mapping module and a transmitting third level beam combining module in series.

[0020] Preferably, each switching processing node is further connected with all uplink channel processing nodes and downlink channel processing nodes.

[0021] A digital transparent processing implementation method for multi-domain flexible application, which adopts the digital transparent processing implementation system for multi-domain flexible application disclosed in the application.

[0022] Compared with the prior art, the application has the following advantages:

[0023] (1) The digital transparent processing implementation system and method for multi-domain flexible application effectively meet the digital transparent processing and forwarding requirements for multi-domain flexible application with a large number of ports, large port bandwidth and high processing capacity, can realize full-array beam combining at the system level, and full-beam and full-frequency sub-band switching, has good expansibility and system reliability, and effectively breaks through the bottleneck of being unable to realize full-feed beam forming, full-beam and full-frequency sub-band flexible switching due to the limitations of conventional processing implementation framework, data transmission node quantity and single node data transmission capacity.

[0024] (2) The digital transparent processing implementation system and method for multi-domain flexible application have multiple levels of independent mapping modules configured in the channel processing plane and the beam processing plane, so that the system has good compatibility with the switching processing plane in the case of a small number of ports and no two-level digital beam combining processing requirement, and the flexibility, adaptability and reliability of the system in the face of different application scenarios are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the application, but do not constitute a limitation on the application. In the drawings:

[0026] Figure 1 To realize system architecture and flow for multi-domain flexible application-oriented digital transparent processing;

[0027] Figure 2 To realize system architecture and flow for multi-domain flexible application-oriented digital transparent processing;

[0028] Figure 3 To realize system architecture and flow for multi-domain flexible application-oriented digital transparent processing;

[0029] Figure 4 To realize system architecture and flow for multi-domain flexible application-oriented digital transparent processing;

[0030] Figure 5 To realize system architecture and flow for multi-domain flexible application-oriented digital transparent processing;

[0031] Figure 6 To realize system architecture and flow for multi-domain flexible application-oriented digital transparent processing;

[0032] Figure 7 To realize system architecture and flow for multi-domain flexible application-oriented digital transparent processing; DETAILED DESCRIPTION

[0033] The application is not limited to the following specific embodiments, and any equivalent transformation based on the technical scheme of the present application falls within the protection scope of the present application. All components and devices in the present application, unless otherwise specified, are all known components and devices in the prior art.

[0034] EMBODIMENT

[0035] A multi-domain flexible application-oriented digital transparent processing system comprises a channel processing plane, a beam processing plane and a switching processing plane.

[0036] Specifically, the channel processing plane comprises M channel processing units corresponding to M uplink ports and M downlink ports, which respectively complete digital channelization processing of M uplink port signals and channel synthesis processing of M downlink port signals, and each channel processing unit comprises an uplink channel processing node and a downlink channel processing node. Figure 2 Each uplink channel processing node disclosed in the embodiment comprises a series of uplink channelization modules and a receiving first sub-band mapping module, and each downlink channel processing node comprises a transmitting first sub-band mapping module and a series of downlink channel synthesis modules.

[0037] The total bandwidth of the useful signal of each uplink port is B, and after channelization processing by the uplink channel processing node, the useful signal occupies N subbands, and the bandwidth of each subband is B / N; the N subband data processed by each uplink channelization module is grouped and rearranged according to the configuration of the subband mapping table in the corresponding receiving first-level subband mapping module, and the number of groups is set to S, and the number of subbands in each group is N / S.

[0038] The MxN subband data processed by the M channelization processing modules and the M receiving mapping modules of the total M ports is distributed to the S subband exchange modules for subband exchange processing, wherein each subband exchange module receives N / S subband data from a single channelization module and MxN / S subband data from M channelization modules. The total subband data of each port is connected to the S beam / exchange processing units of the beam processing / exchange processing plane in the frequency dimension, so that for a system configured with M ports, a total of SxM groups of links are connected to the processing units of other planes.

[0039] The mapping grouping disclosed in the embodiment has two working modes. One mapping working mode is a sequential grouping mode according to frequency, that is, after channelization processing, all N subbands are sequentially grouped according to frequency, and are divided into S groups, and the number of subbands in each group is N / S, that is, the subband numbers of the first group are 1, 2,..., N / S, the subband numbers of the second group are N / S+1, N / S+2,..., 2N / S, and the subband numbers of the Sth group are (S-1)N / S+1, (S-1)N / S+2,..., N. The bandwidth of each group is SxB / N, as shown in Figure 3 The second mapping working mode is to select and rearrange the order of the subbands according to the configuration of the receiving first-level mapping table, so as to finally ensure that the number of subbands in each group is N / S, and the subband numbers are realized according to the mapping configuration table, as shown in Figure 4 .

[0040] Specifically, the beam processing plane includes S beam processing units, and each beam processing unit includes an uplink beam processing part and a downlink beam processing part.

[0041] The uplink beam processing part of the embodiment includes M uplink port processing nodes, each of which is connected to M uplink channel processing nodes; each uplink beam processing part further includes R uplink beam processing nodes, each of which is connected to all uplink port processing nodes in the uplink beam processing part.

[0042] The downlink beam processing part includes M downlink port processing nodes, each of which is connected with the M downlink channel processing nodes; and each downlink beam processing part further includes R downlink beam processing nodes, each of which is connected with all the downlink port processing nodes in the uplink beam processing part.

[0043] Specifically, the switching processing plane includes S' switching processing units, each of which includes K switching processing nodes, each of which is connected with all the uplink beam processing nodes and all the downlink beam processing nodes.

[0044] The system disclosed in the embodiment satisfies full switching capability, and the number S' of the switching processing units and the number K of the switching processing nodes in each switching processing unit satisfy S'×K>R×S.

[0045] Any group of connected uplink port processing nodes and uplink beam processing nodes disclosed in the embodiment includes a receiving first-level beam synthesis module and a receiving second-level subband mapping module connected in series, and any group of connected downlink beam processing nodes and downlink port processing nodes includes a transmitting second-level subband mapping module and a transmitting third-level beam synthesis module connected in series. Alternatively, any group of connected uplink port processing nodes and uplink beam processing nodes disclosed in the embodiment includes a receiving first-level beam synthesis module, a receiving second-level subband mapping module, a receiving second-level beam synthesis module and a receiving third-level subband mapping module connected in series, and any group of connected downlink beam processing nodes and downlink port processing nodes includes a transmitting third-level subband mapping module, a transmitting second-level beam synthesis module, a transmitting second-level subband mapping module and a transmitting third-level beam synthesis module connected in series.

[0046] A receiving second-level subband mapping module is configured after the receiving first-level beam synthesis module of each beam processing unit, and the working mode of the receiving second-level subband mapping module is similar to that of the first-level receiving subband mapping. N subband beams processed by each receiving first-level beam synthesis module are grouped and rearranged according to the configuration of the receiving second-level subband mapping table in the corresponding mapping module. The second-level and third-level subband mappings are processed in the same way as the first-level subband mapping, and are realized through different mapping table configurations.

[0047] The receiving first-level, second-level and third-level subband mappings are an important link between the channelization module and the switching module, and are the key to realizing flexible switching of any subband of an uplink input port / input beam to any subband of a downlink and switching input port / input beam.

[0048] When the sub-band grouping and rearrangement is performed in the receiving three-stage mapping module, different sub-band switching needs for on-demand, groupcast and broadcast, etc. are required, and the sub-band is output to any switching processing unit according to the destination sub-band number to be switched by the current sub-band, and the function of sub-band switching is completed in the switching processing plane.

[0049] The embodiment sets the subarray port scale as T, and when the number of uplink and downlink ports of the channel does not exceed the upper limit of the port scale of a single beam processing unit, that is, M≤T, the processing of the two-stage beam synthesis and the three-stage sub-band mapping is not required; if the port scale processing upper limit is exceeded, that is, M>T, the processing of the two-stage beam synthesis and the three-stage sub-band mapping is required, wherein the two-stage beam synthesis mainly completes the beam synthesis of different subarrays, the number of beam signals output by the two-stage beam synthesis is R, the bandwidth is B, and the number of sub-bands is N / S'.

[0050] Any switching processing unit needs to process the switching of all R beam ports and R×N / S' sub-bands of each port, and a single switching processing plane can realize both time slot switching within the same beam port and spatial switching between different beam ports.

[0051] Any switching processing unit in the switching processing plane runs completely independently and in parallel, and the planes are completely replaceable with each other, and in the case that the processing capacity of the switching processing unit reaches the upper limit of the processing capacity or any transmission path or switching processing unit is abnormal, the use requirements of the system switching can still be met after being replaced by other units.

[0052] Embodiment 2

[0053] Each switching processing node disclosed in the embodiment is also connected to all uplink channel processing nodes and downlink channel processing nodes. That is, the channel processing plane can be connected to the beam processing plane, or can be directly connected to the switching processing plane across the beam processing plane. When the channel processing plane is connected to the beam processing plane, the receiving first-stage sub-band mapping module works in mode one; when the channel processing plane is connected to the switching processing plane, the receiving first-stage sub-band mapping module works in mode two, and the working states of the two modes are realized by different mapping working mode parameter configurations, such as Figure 5 .

[0054] The preferred embodiments of the disclosure are described in detail above in combination with the drawings, but the disclosure is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the disclosure within the technical concept of the disclosure, and these simple modifications all belong to the protection scope of the disclosure.

[0055] It should be further noted that various specific technical features described in the above detailed description are not to be interpreted as essential to the present disclosure, and any combination of the various features described in the above detailed description is possible, and the present disclosure is not limited to any specific combination thereof.

[0056] Furthermore, any combination of the various embodiments disclosed herein is also possible, and should be considered as being within the scope of the present disclosure.

Claims

1. A system for implementing digital transparent processing for multi-domain flexible applications, characterized in that, The channel processing plane, the beam processing plane and the switching processing plane are included; The channel processing plane includes M channel processing units corresponding to M uplink ports and M downlink ports, each of which includes an uplink channel processing node and a downlink channel processing node; The beam processing plane includes S beam processing units, each of which includes an uplink beam processing part and a downlink beam processing part; The uplink beam processing part includes M uplink port processing nodes, each of which is connected with M uplink channel processing nodes; each uplink beam processing part further includes R uplink beam processing nodes, each of which is connected with all uplink port processing nodes in the uplink beam processing part; The downlink beam processing part includes M downlink port processing nodes, each of which is connected with M downlink channel processing nodes; each downlink beam processing part further includes R downlink beam processing nodes, each of which is connected with all downlink port processing nodes in the uplink beam processing part; The switching processing plane includes S' switching processing units, each of which includes K switching processing nodes, each of which is connected with all uplink beam processing nodes and all downlink beam processing nodes.

2. The multi-domain flexible application oriented digital transparent processing implementation system as claimed in claim 1, wherein, S'×K>R×S.

3. The multi-domain flexible application oriented digital transparent processing implementation system as claimed in claim 2, wherein, Each uplink channel processing node includes a serially connected uplink channelization module and a receive first-level sub-band mapping module, and each downlink channel processing node includes a serially connected transmit first-level sub-band mapping module and a downlink channel synthesis module.

4. The multi-domain flexible application oriented digital transparent processing implementation system as claimed in claim 2, wherein, Any group of connected uplink port processing nodes and uplink beam processing nodes includes a serially connected receive first-level beam synthesis module and a receive second-level sub-band mapping module, and any group of connected downlink beam processing nodes and downlink port processing nodes includes a serially connected transmit second-level sub-band mapping module and a transmit third-level beam synthesis module.

5. The multi-domain flexible application oriented digital transparent processing implementation system as claimed in claim 2, wherein, Any group of connected uplink port processing nodes and uplink beam processing nodes includes a serially connected receive first-level beam synthesis module, a receive second-level sub-band mapping module, a receive second-level beam synthesis module and a receive third-level sub-band mapping module, and any group of connected downlink beam processing nodes and downlink port processing nodes includes a serially connected transmit third-level sub-band mapping module, a transmit second-level beam synthesis module, a transmit second-level sub-band mapping module and a transmit third-level beam synthesis module.

6. The multi-domain flexible application oriented digital transparent processing implementation system according to any of claims 1 to 5, characterized in that, Each switching processing node is further connected with all uplink channel processing nodes and downlink channel processing nodes.

7. A method for implementing digital transparent processing for multi-domain flexible applications, characterized in that, A digital transparent processing system for multi-domain flexible application is implemented by using the system as claimed in any one of claims 1-5.

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