A Joint Admission Control Method for Heterogeneous Wireless Networks

Abstract

The present invention relates to a heterogeneous wireless network joint admission control method. The method comprises the steps of defining a system state space, determining network overall energy consumption, setting an action set, determining a gain model, calculating a state transition probability and a maximized long-term expected gain, and using an improved value iteration algorithm to obtain an optimal strategy. According to the method, optimal admission control is used, in the condition that a network state and a service blocking rate / dropping rate are changed, based on the above resources, the allowance or rejection of calling access or switching is adaptively determined and controlled, and minimal energy consumption is obtained. By using a network overall energy consumption model, while the switching dropping rate and calling blocking rate are reduced, the QoS of a whole system is effectively ensured, the resource is effectively utilized, and two sides are balanced. Based on a semi-Markov decision process, a whole network admission decision strategy is obtained, and the computation and complexity of an algorithm are reduced.

Description

technical field [0001] The invention relates to the technical field of computer communication, in particular to a method for determining joint call control strategies of heterogeneous wireless networks. Background technique [0002] With the development of heterogeneous wireless network technologies, smart terminals are becoming more and more popular, which not only realizes the integration of technologies, but also satisfies users with always best connected (ABC, Always Best Connected) network services. Only relying on one wireless communication technology or one networking method will not be able to meet the user's demand for high-quality access to ABC wireless services anytime, anywhere. Therefore, the concept of heterogeneous network convergence emerged as the times require. The goal of ABC is to ensure that users using multi-mode terminals can communicate between any accessible wireless technologies, support more users and provide high-speed services. For a service-int...

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Problems solved by technology

[0007] Aiming at the problems existing in the existing admission control technology, the present invention provides a joint admission control method based on user service quality and network energy consumption, and uses semi-Markov decision-making SMDP to establish an optimized joint admission control model to minimize the overall energy consumption of the network. With the goal of optimizing consumption and user service quality, the optimization problem is described by the quintuple of the semi-Markov decision process, and the admission control decision-making strategy of the heterogeneous wireless network is obtained through the improved value iterative algorithm, and the maximum value of the heterogeneous wireless network is obtained. Long-term expected income, which takes into account both the income of the system accepting the call and the cost of denying the access

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