A method for configuring inter-beam sub-band hinges for digitally transparent processing payloads

Abstract

This invention proposes a subband hinge relationship configuration method supporting multiple beams to address the problems of complex end-to-end communication implementation and high latency in existing networks. By configuring the transmit / receive subband hinge relationship between beam positions, the transmit / receive resources between a beam position and its neighboring beam positions are configured, ensuring that any two adjacent beams have subbands for hinge connections. This allows terminals under any beam to interconnect and communicate with terminals under neighboring beams via single-hop forwarding. Furthermore, the terminal can implement ground forwarding functionality, thereby achieving interconnection and communication with terminals under more distant beams through ground multi-hop communication.

Description

Technical Field

[0001] This invention relates to the field of satellite communications, specifically to a method for configuring inter-satellite subband hinges using digital transparency processing technology. This method, along with terminal forwarding technology, enables interconnection and interoperability among all terminals within a satellite network. Background Technology

[0002] The inter-beam hinges of existing multi-beam high-throughput satellites primarily refer to the hinge relationship between the feed beam and the user beam, i.e., the feed uplink and user downlink hinges, and the user uplink and feed downlink hinges. However, the hinge relationship between user beams requires the feed beam to be established at the gateway station. Therefore, to achieve hinge relationships between arbitrary satellite beams, a star-shaped network centered on the gateway station needs to be constructed. End-to-end communication in such a network often requires a "double-hop," resulting in complex network construction and relatively high latency.

[0003] Digital transparency processing technology is a key technical feature of my country's next-generation high-throughput satellites. This technology enables multi-carrier high-throughput satellites to easily establish hinge relationships between arbitrary subbands across beams.

[0004] Digital transparent processing technology was first adopted by the US military on its Wideband Global Satellite Communications (WGS) satellites, and subsequently applied to some military / civilian satellites in countries such as France, Japan, and Israel. It is a semi-transparent forwarding technology with onboard processing capabilities, and the transponders using this technology are also called semi-regenerative transponders. Such transponders generally consist of three parts: a splitter / combiner, a microwave switching matrix, and an onboard switching controller. The splitter performs digital channelization processing on each received signal. The onboard switching controller configures the switching matrix according to instructions from the ground network control center, enabling free switching between channels. The network control center allocates bandwidth and channel resources to each user based on their requests from ground station users, and simultaneously configures the onboard switching controller to complete the signal switching. This technology combines the advantages of traditional transparent transponders and regenerative transponders, offering flexibility and reliability while supporting finer-grained switching (subband switching). It also circumvents the constraints of the physical layer signaling system, increasing system capacity and meeting the needs of variable bandwidth services and flexible network topology adjustments. Summary of the Invention

[0005] In view of this, the present invention proposes a subband hinge relationship configuration method supporting multiple beams, so that any two adjacent beams have subbands for hinge, thereby enabling terminals under any beam to interconnect and communicate with terminals under adjacent beams through single-hop forwarding. Based on this, the terminal can implement ground forwarding functionality, thereby achieving interconnection and communication with terminals under more distant beams through ground multi-hop.

[0006] The specific technical solution is as follows:

[0007] A method for configuring subband hinges between digital transparent processing payload beams is provided. By configuring the transceiver subband hinge relationship between beam positions, the transceiver resource configuration between beam positions and adjacent beam positions is realized, enabling terminals located at the beam position's geographical location to communicate directly with terminals located at adjacent beam positions' geographical locations via DTP single-hop forwarding.

[0008] Furthermore, the specific configuration of the transmission and reception subband hinge relationship between the wave positions includes that each wave position has N receiving subbands and K transmitting subbands, where N>7 and K>7. Each wave position has 6 adjacent wave positions, wherein the 6 receiving subbands and 6 transmitting subbands in each wave position establish a hinge relationship with the 6 adjacent wave positions.

[0009] Furthermore, the six receiving subbands of position i are each mapped one-to-one with a transmitting subband of each adjacent position; and the receiving subband of each adjacent position is mapped one-to-one with a transmitting subband of position i, where i is any position under a multi-beam satellite.

[0010] Furthermore, the positions located at the edge of the satellite's multi-beam coverage area must not have a hinge relationship with the positions in areas not covered by the satellite's multi-beam coverage area.

[0011] Furthermore, a single spectral bit can be configured with an internal receive subband hinge to the transmit subband to enable local forwarding.

[0012] Furthermore, its characteristics also apply to other multi-beam satellites with grid-like distributions and clusters of any number of beams.

[0013] Beneficial effects

[0014] 1) This invention utilizes the characteristic of the definable subband hinge relationship between beams in digital transparent processing technology, enabling terminals within a beam to achieve network communication through subbands with a subband hinge relationship with the target beam, thus realizing "one-hop" communication with adjacent beam terminals.

[0015] 2) Based on "one-hop" communication, the terminal can realize ground forwarding function, thereby realizing interconnection communication with terminals under a more distant beam through ground "multi-hop".

[0016] 3) This method is simple to implement, has a fast response time, and low latency. Attached Figure Description

[0017] Figure 1 A schematic diagram showing the hinge relationship between the receiver subband and the transmitter subband;

[0018] Figure 2 Schematic diagram of wave cluster structure;

[0019] Figure 3 A schematic diagram of the beam-to-beam sub-band hinge configuration method of the present invention;

[0020] Figure 4 A schematic diagram of multi-beam high-throughput satellites;

[0021] Figure 5 A schematic diagram of interconnection and communication with terminals at more distant wavelengths. Detailed Implementation

[0022] The DTP payload has several transmit and receive ports, each port has several transmit and receive subbands belonging to multiple transmit and receive beams. For example... Figure 1 As shown, the receiving beam R has receiving subbands {n, n+1, ..., N}, and the transmitting beam S has transmitting subbands {k, k+1, ..., K}. The receiving subbands in the receiving beam R and the transmitting subbands in the transmitting beam S have a configurable hinge relationship. Assume the subband hinge relationship between the receiving beam R and the transmitting beam S is as follows: Figure 1 As shown. Through this hinge relationship, the receive subband {n,n+1,…,N} of the receive port can be mapped one-to-one to the transmit subband {k,k+1,…,K} of the transmit port.

[0023] Generally, the geographical locations covered by the transmit and receive beams of a high-throughput satellite are strictly related; we call the geographical locations covered by the transmit and receive beams "wave positions". A multi-beam high-throughput satellite can have m wave positions, where any one wave position can form a cluster with its six neighboring wave positions, such as... Figure 2 As shown, the i-th wave position and the surrounding wave positions {i+1, i+2, ..., i+6} are arranged in a honeycomb structure to form a cluster.

[0024] Assume each wavelength position has N (N>7) receive subbands and K (K>7) transmit subbands, where the 7 receive subbands {n,n+1,n+2,…,n+6} and 7 transmit subbands {k,k+1,k+2,…,k+6} can all be used to establish hinge relationships. The configuration method for the hinge relationship between wavelength position i and the surrounding wavelength positions {i+1, i+2,…,i+6} is as follows: Figure 3 As shown.

[0025] like Figure 3As shown, in addition to using an internal receiving subband n hinge to the transmitting subband k for local forwarding, the i-th wave position uses 6 receiving subbands {n+1,n+2,…,n+6} and 6 transmitting subbands {k+1,k+2,…,k+6} to map the receiving and transmitting subbands of the surrounding {i+1,i+2,…,i+6} wave positions one-to-one. Specifically, the receiving subband {n+1,n+2,…,n+6} of wave position i is a one-to-one mapping hinge with the transmitting subbands {{k+1},{k+2},…{k+6} of wave positions i+1, i+2,…,i+6, respectively; and the receiving subbands {{n+1},{n+2},…{n+6} of wave positions i are a one-to-one mapping hinge with the transmitting subband {k+1,k+2,…,k+6} of wave position i. This constitutes a hinge relationship between wave position i and wave positions {i+1, i+2,…,i+6}.

[0026] This hinged configuration allows for a hinged relationship between waveposition i and any adjacent wavepositions. It's worth noting that waveposition i can be any of the m wavepositions in a multi-beam high-throughput satellite, and it can establish a hinged relationship with its adjacent wavepositions. A schematic diagram is shown below. Figure 4 As shown.

[0027] Similarly, the aforementioned wave positions {i+1, i+2, ..., i+6} or other wave positions can also be used as the aforementioned wave position i, allowing its receiving subband to have a hinge relationship with the transmitting subband of the surrounding wave positions.

[0028] This process is repeated for all other positions on the satellite. Each position can achieve a hinged relationship with adjacent positions using 7 subband resources. It is important to note that the number of beams on a multi-beam satellite is limited. Positions located at the edge of the satellite's multi-beam coverage area cannot be hinged with positions outside the satellite's multi-beam coverage area.

[0029] Based on this, if the terminal implements relay forwarding functionality, it can achieve interconnection and communication with terminals at more distant wavelengths. (See diagram below.) Figure 5 As shown.

[0030] The figure above illustrates an application scenario in which the sub-band hinge configuration method of the present invention is used to increase communication distance and expand coverage area.

Claims

1. A method of configuring a digital transparent processing inter-band sub-band hinge of a carrier wave beam, characterized by: Through the configuration of the transceiving sub-band hinge relationship between the wave positions, the transceiving resource configuration between the wave positions and adjacent wave positions is realized, so that the terminal located in the geographical position of the wave position directly communicates with the terminal located in the geographical position of the adjacent wave position through DTP single-hop forwarding; The configuration of the transceiving sub-band hinge relationship between the wave positions specifically includes that each wave position has N receiving sub-bands and K transmitting sub-bands, N>7, K>7, and each wave position has 6 adjacent wave positions, wherein the 6 receiving sub-bands and the 6 transmitting sub-bands in each wave position establish a hinge relationship with the 6 adjacent wave positions. The hinge relationship established by the 6 receiving sub-bands and the 6 transmitting sub-bands in each wave position with the 6 adjacent wave positions is that the 6 receiving sub-bands of the i-th wave position are one-to-one mapped with a transmitting sub-band in each adjacent wave position; and a receiving sub-band in each adjacent wave position is one-to-one mapped with a transmitting sub-band of the i-th wave position, i being any wave position under a multi-beam satellite.

2. The method of claim 1, wherein: The wave position located in the edge area of the multi-beam coverage of the satellite cannot be configured with a hinge relationship with the wave position in the non-multi-beam coverage area of the satellite. ​ 3. The method of claim 1 or 2, wherein: One wave position uses one internal receiving sub-band to be hinged to a transmitting sub-band to realize local forwarding. ​ 4. The method of claim 3, wherein: the digital transparent processing payload inter-beam sub-band hinge is configured by: determining a first set of sub-band hinges for a first beam; determining a second set of sub-band hinges for a second beam; and determining a third set of sub-band hinges for a third beam. The characteristics are the same It is applicable to a multi-beam satellite with a grid-shaped distribution and any number of wave positions as a cluster under other multi-beam wave position arrangement conditions.

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