A Power Coordination Method Considering the Utilities of Near and Far Area Users

Abstract

The invention relates to a power coordinating method integrating effectiveness of near field users and effectiveness of distant field users. The method includes the steps of (S1) users set balance factors and initialize transmitting power according to positions of the users in a community; (S2) gain interference-to-noise ratios at the receiving end of a base station which the users belong to are measured to obtain signal interference-to-noise ratios of the users; (S3) relaxing factors are led in, and water injection level adjustment factors are calculated through the balance factors; (4) thresholds of the signal interference-to-noise ratios are initialized, transmitting power of the users is iterated according to the signal interference-to-noise ratios, the transmitting power and the water injection level adjustment factors, and new signal interference noise ratios are obtained according to updating of iteration; (S5) according to the thresholds of the new signal interference noise ratios and the largest transmitting power of the users, the water injection level adjustment factors are updated; (S6) if all the users can meet precision restriction conditions, the algorithm is finished, and otherwise, operations are carried out from the step S2. The signal interference noise ratios of the users are guaranteed, and fairness of the near field users and the distant field users is improved.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a power coordination method that takes into account the utility of users in near and far areas. Background technique [0002] With the rapid development of wireless communication technology, spectrum resources are becoming increasingly scarce due to more and more communication terminal access requirements. Operators are gradually paying attention to the importance of wireless spectrum resources. It is not only a limited and precious natural resource, but even a strategic resource. Therefore, how to use the increasingly scarce wireless spectrum resources rationally, effectively and economically is an issue that has received more and more attention in the field of wireless communications. [0003] In the current 3GPP LTE (Long Term Evolution, Long Term Evolution) system, the technology used is based on Orthogonal Frequency Division Multiplexing Access (OFDMA). Th...

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Problems solved by technology

However, the equilibrium solution is not necessarily the optimal solution, therefore, a cost-based non-cooperative game power control problem is proposed

[0008] In the article "Power Control Method Based on Nash Bargaining Solution in Cognitive Network", the non-cooperative game power control algorithm (SINR balance algorithm) based on SINR balance is proposed. This algorithm can guarantee the QoS of each user. However, the signal-to-interference-noise ratio at its final convergence point is a fixed value, which cannot change with the change of multiple interference and noise

The document "Power control for wireless CDMA" proposes a set of power control algorithms based on pricing functions, called the Koskie-Gajic algorithm. This algorithm can reduce the transmit power significantly by appropriately reducing the user's SINR, but it cannot fully guarantee Target SINR for each user

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