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Cooperative user power and rate control method based on game theory in heterogeneous network

A heterogeneous network and rate control technology, applied in network planning, power management, electrical components, etc., can solve the problems of not reflecting interference and the NPG model not fully considering user fairness, etc., to improve the fairness of transmission rate, The effect of high transmit power

Active Publication Date: 2014-04-02
BEIJING JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The NPG model does not fully consider the fairness among users, and the revenue function does not reflect the interference of other users on the target user

Method used

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  • Cooperative user power and rate control method based on game theory in heterogeneous network
  • Cooperative user power and rate control method based on game theory in heterogeneous network
  • Cooperative user power and rate control method based on game theory in heterogeneous network

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Experimental program
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Embodiment Construction

[0024] Such as figure 1 Shown is a flow chart of a method for joint user power and rate control based on game theory in a heterogeneous network. This control method comprises the steps:

[0025] 1) Cognitive users access the network;

[0026] 2) Detect whether there is an idle frequency band; if it exists, whether there is an authorized user's access on the monitoring channel, and if it does not exist, return to step 1:

[0027] 3) Go to the next step, if there is no authorized user to access the network, then monitor again;

[0028] 4) Initialization: k=0, before starting the algorithm, initialize the transmission power, transmission rate, cost function and income function;

[0029] 5) Calculate the revenue function: calculate the signal-to-interference and noise ratio SINR and the user revenue function by using the initialized transmission power, transmission rate and cost function;

[0030] 6) Comparison: compare the obtained income function with the income function obt...

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Abstract

The invention relates to a cooperative user power and rate control method based on a game theory in a heterogeneous network. By using the game theory for mathematical modeling and adding interference coexistence analysis related knowledge, a power and rate control game algorithm suitable for a heterogeneous network environment is provided. The method considers justice among users; since the algorithm introduces a cost function mechanism in a revenue function, not only can the problem of interference among different users and different systems be reflected, but also the problem of transmission rate and transmitted power justice among the users is considered. The cooperative user power and rate control method based on the game theory in the heterogeneous network has the advantages that the transmitted power is higher and the transmission rate justice is greatly improved under the situation of a small loss of revenues.

Description

technical field [0001] The invention relates to wireless resource management technology, in particular to a game theory-based joint user power and rate control method in a heterogeneous network. Background technique [0002] In today's multi-system coexistence communication system, different service types require different data transmission rates, and effective power control is required to reduce transmission power and prolong battery life. Due to the existence of interference, spectrum sharing has practical significance for the analysis of the actual benefit maximization behavior of all participants and the mutual decision-making relationship between users. At present, under the premise of the coexistence of interference between heterogeneous networks, how to use game theory to control users’ power and rate allocation reasonably, so as to effectively improve the spectrum utilization mainly includes non-cooperative power control game (Non-cooperative Power control Game, NPG)...

Claims

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Application Information

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IPC IPC(8): H04W52/04H04W52/24H04W16/14
CPCY02B60/50
Inventor 赵军辉王娇张浩刘旭
Owner BEIJING JIAOTONG UNIV