Compound relay excitation method for cooperative downlink communication

Abstract

The invention discloses a compound relay excitation method for cooperative downlink communication, which can be used for solving the technical problem that the return cannot be determined to give to a relay that participates in the cooperation existing in a current long-term return method and the technical problem of low resource utilization efficiency existing in an immediate return method. The method comprises the following implementation steps: in any time slot, an evolution node obtains the channel coefficient between the evolution node and a user as well as the channel coefficient between a candidate relay and the k-th user; the evolution node determines the relay which is matched with the k-th user; the evolution node calculates the scheduling weight of the k-th user; the evolution node traverses the scheduling weights of all users in a cell to determine a destination user; after the data transmission is completed, the evolution node updates the average rate of all users in the cell according to an improved proportional fairness algorithm; and in a next time slot, the above steps are repeated. According to the compound relay excitation method disclosed by the invention, reasonable returns can be given to the relay node, and the system spectrum efficiency, the survival time and the relay energy efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a relay incentive method, in particular to a relay incentive method combining immediate reward and long-term reward, which can be used to reward and encourage relay nodes participating in cooperation in cooperative downlink communication. Background technique [0002] 5G wireless communication systems need to efficiently provide more types of mobile applications for a large number of smart devices. In order to achieve higher data rates and better coverage on the basis of reducing management overhead and energy consumption, collaborative communication will be commonly used. The core idea of ​​cooperative communication is to use the mutual cooperation between multiple nodes in the wireless network to realize path transmission sharing, thereby improving the throughput of the entire wireless network. As an important part of cooperative communication, relays include fixed relays a...

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Problems solved by technology

[0006] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art, and propose a compound relay incentive method in cooperative downlink communication, which is used to solve the existing long-term reward methods that cannot be determined to give rewards and rewards to relays participating in cooperation. The technical problem of low resource utilization efficiency in the instant reward method, on the basis of not affecting the transmission performance of the target user, give the relay node a reasonable reward to achieve the improvement of the system spectrum efficiency and survival time, as well as the relay energy efficiency

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