An on-board hopping beam synchronization method for transparent forwarding of service information

Abstract

The invention discloses an on-satellite hop beam synchronization method oriented to service information transparent transpond. The method comprises the following steps: at first, a gateway station sends the service information to an on-satellite forward link transponder according to preset service time slot, and sends a corresponding beam hopping control signal to the on-satellite forward link transponder ahead of the fixed time interval delta T of the corresponding beam service information in the same time slot, wherein the delta T is the sum of the required processing delay from the receiving of the beam hopping control signal to the extraction of the beam hopping switch control information by the on-satellite forward link transponder and the switching delay of a switch; the beam hoppingcontrol signal comprises the switch control information about the user on-satellite beam hopping; and then the on-satellite forward link transponder extracts the beam hopping switch control information, and realizes the switching on the beam control switch of the forward link transponder according to the beam hopping switch control information. The method disclosed by the invention has the advantages of being simple in beam hopping synchronization process, fast in synchronization time, and flexible in beam hopping.

Description

technical field [0001] The invention relates to an on-board hopping beam synchronization method for transparent forwarding of service information, which is mainly used in a beam-hopping system based on on-board transparent forwarding, and belongs to the technical field of satellite communication. Background technique [0002] With the development of satellite communication technology, foreign countries have successively launched large-capacity, high-speed communication satellites to meet the growing demand for satellite broadband communication and broadcasting services. The large-capacity broadband communication satellite system is characterized by wide coverage and large capacity, adopts technologies such as multi-spot beam and frequency multiplexing, and has high system capacity and spectrum utilization. In the current multi-spot beam satellite communication system, the frequency multiplexing and radio frequency power of each beam are fixed in the load design mode. Howeve...

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Problems solved by technology

Document 2 "RSM-A air interface, Physical layer specification, Part 2: Frame structure; ETSI TS 102 188-1 V1.1.2 (2004-07)", which is one of the international standards developed by Europe for broadband satellite communication systems , mainly for on-board processing satellite systems, this standard mainly supports satellite communication downlink beam hopping through a specific frame structure design in the downlink, and the beam hopping adopts the method of ground synchronous on-board satellite, which is not suitable for transparent satellite forwarding beam hopping systems usage of

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