Outbound resource scheduling method and device of outbound capacity restricted asymmetric satellite channel

Abstract

The invention discloses an outbound resource scheduling method and device of an outbound capacity restricted asymmetric satellite channel. The device comprises a buffer unit, a business type parameter configuration unit, a user parameter configuring unit, a prior scheduling acknowledgement unit, a non-prior scheduling acknowledgement unit and a resource allocation unit. Outbound messages are classified according to outbound beams; the data businesses belonging to the same outbound beam are classified according to business priorities; the data businesses belonging to the same business type K are arranged according to a first-in first-out sequence; with respect to the data business queue of any one outbound beam, users of [delta]T<k,i> <N*T <subframe > are selected out from the outbound queues of various current business types k as ''emergency users''; the ''emergency users'' are arranged according to [delta]T<k,i>; the outbound data with low [delta]T<k,i> are transmitted preferentially; if there is no ''emergency user'', all outbound users are ranked according to a weighted proportional fair algorithm; and the users with high priories are transmitted firstly. According to the method and the device provided by the invention, the quality of service demands of various businesses of the users and the system performance are ensured.

Description

technical field [0001] The invention relates to the technical field of satellite mobile communication, and more specifically, to a method for outbound resource scheduling of an RDSS (Radio Determination Satellite Service) satellite mobile communication system. Background technique [0002] The RDSS service system is mainly composed of space segment, ground control center and user segment: [0003] The space segment consists of a satellite constellation consisting of several satellites. These satellites (outbound transponders, inbound transponders) forward the outbound signals sent by the ground central station and the inbound signals sent by the user machine, and have certain anti-jamming capabilities . [0004] The ground control center uses a large antenna with a transmission power of several hundred watts. It is responsible for channel allocation, user signal transmission and reception measurement and information transmission and reception processing, and manages and con...

AI Technical Summary

Problems solved by technology

[0011] 4. Algorithm complexity: In order to obtain the scheduling result of each outbound frame in time, there are certain requirements for the operation cycle of the scheduling algorithm, especially when the outbound business is busy

Although this scheduling algorithm is simple and easy to implement, it does not consider the impact of other information on the overall performance of the system, such as channel changes, service types (point-to-point communication, multicast / commoncast / broadcast), and time delays for different services and different users. request etc.

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