A Phased Array Receiving Beam Resource Allocation Method for Satellite Communication

A technology for receiving beams and resource allocation, applied in the field of satellite communications, can solve problems such as unsatisfied services, and achieve the effect of avoiding frequency interference

Active Publication Date: 2022-04-19
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When beams cannot cover all users, the usual practice is to assign beams to users with high priority according to priority order, while the service of users with low priority cannot be satisfied

Method used

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  • A Phased Array Receiving Beam Resource Allocation Method for Satellite Communication
  • A Phased Array Receiving Beam Resource Allocation Method for Satellite Communication
  • A Phased Array Receiving Beam Resource Allocation Method for Satellite Communication

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Embodiment

[0058] For a broadband communication satellite, a phased array antenna is used as its receiving antenna, and the number of receiving beams is 16. The satellite adopts 4 frequency multiplexing methods, each frequency has 4 beams, and the bandwidth of each beam is 100MHz. The current number of online users is 160. The service demand of each user is represented by the average bandwidth w. The value of w can be 1MHz, 2MHz, 6MHz or 16MHz. The average bandwidth demand of each user is generated randomly, and the average bandwidth demand of all users is formed. Vector W, W is a 160*1 vector. The 3dB beam width of each beam is 6 degrees (3dB width), the beam center isolation angle of the same color beam is required to be greater than or equal to 12 degrees to avoid frequency interference of the same frequency beam, and the ground coverage angle of the satellite is ±55°.

[0059] According to the usual service model of satellite communication, the satellite covers a channel, 80% of the...

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Abstract

The invention relates to the technical field of satellite communication, and discloses a phased array receiving beam resource allocation method for satellite communication. The method is completed through two steps. The first step is to obtain the total bandwidth of the user under one wave position. When the demand is not greater than the bandwidth capacity of the beam, find the wave position and the center point of the wave position that can cover all users; the second step is to map each wave position to a certain beam, and ensure that the same frequency beam is used The isolation angle between the two covered wave positions meets the frequency interference suppression requirements. The invention can provide on-demand business services for users covered by a wide area. When all satellite beams cannot cover all users instantaneously, the invention provides a time-sharing service method, which can avoid frequency interference under the condition of satellite frequency reuse.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a phased array antenna receiving beam resource allocation method for satellite communication. Background technique [0002] Satellite communication is a resource-constrained system. Coverage strength and coverage width are a pair of natural contradictions. When the number of beams is certain, when the beam width is wide, the coverage width is large, but the coverage strength is low (low antenna gain), and the corresponding The communication rate is low; conversely, the coverage area is small if the beam width is narrow, but the coverage strength is high (low antenna gain). On the other hand, the user distribution of satellite communication is usually sparse and dynamic, and in low-orbit satellite communication systems, this dynamic is more obvious with the rapid movement of satellites. In order to achieve a compromise between coverage strength and coverage breadt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W72/04
CPCH04B7/18519H04W72/046
Inventor 阳凯王育强徐敏陈茂良张涛张辉陈科秀曹春燕唐海
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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