Multi-beam power dynamic allocation method, communication equipment and low-orbit satellite communication system
A dynamic allocation and multi-beam technology, applied in the transmission system, wireless communication, radio transmission system, etc., can solve the problems that users cannot be allocated sub-channels and cannot use the same sub-channel at the same time
Active Publication Date: 2022-05-27
中国星网网络应用有限公司
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The most commonly used algorithm for the adaptive method in the dynamic allocation method is the water injection algorithm, which is one of the best adaptive power allocation algorithms for a single-user system or a multi-user system with fixed resource allocation, but for a multi-user system, The same subchannel cannot be used at the same time. When the best channel expected by a user is used by other users, it indicates that the user cannot be allocated to the best subchannel. For multi-user systems, the water filling algorithm may no longer be the best The power distribution algorithm of
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[0031]Embodiments of the present invention are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar designations from beginning to end indicate the same or similar elements or elements with the same or similar functions. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present invention only, and cannot be construed as limiting the present invention.
[0032] In the description of the present invention, it is to be understood that the term "longitudinal", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and other indications of the orientation or position relationship is based on the orientation or position relationship shown in the drawings, only to facilitate the description of the present invention and simplify the description, and not to indicate or imply that the means or ele...
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The invention discloses a multi-beam power dynamic distribution method, communication equipment and a low-orbit satellite communication system. The method includes: S1, establishing the objective function and constraint relationship of power allocation; S2, obtaining the channel information corresponding to each beam in real time, the channel information includes the channel estimation coefficient of the channel corresponding to the beam, using the channel information to solve the objective function, and calculating the distribution to each beam. S3, judge whether the sum of the allocated powers of all users is less than the total power, if the sum of the allocated powers of all users is less than the total power, then stop the iteration, and obtain each optimal power, otherwise, continue to step S2. Using instantaneous channel information and allocation of channel resources among different users, the objective function is established with the optimization goal of capacity maximization, the optimal power of each beam is selected, and the power allocation is adjusted and optimized in real time to ensure that the beam power of each user is updated in real time.
Description
Technical field [0001] The present invention relates to the field of satellite carrier power dynamic optimization technology, in particular to a multi-beam power dynamic distribution method, communication equipment and low orbit satellite communication system. Background [0002] In satellite communication systems, satellite payloads limit transmission power and bandwidth, and it is critical to improve their utilization under the condition of limited on-board resources. In the multi-beam satellite communication system, due to the non-uniform distribution of satellite terminals in geospatial space, the distribution of business volume between beams is quite different, so it is necessary to rationalize the allocation of power resources. Whether the distribution of on-site power resources between beams can adapt to scenarios where the actual traffic volume is not evenly distributed, as well as the improvement of system performance such as resource use efficiency and system capacity, ...
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IPC IPC(8): H04B7/185H04B7/0408H04W72/04
CPCH04B7/1851H04B7/0408H04W72/0473Y02D30/70
Inventor 李炎炎刘鸿鹏张晋升王艳峰
Owner 中国星网网络应用有限公司