دانلود رایگان مقاله تامین کیفیت خدمات برای چند فمتوسل ها از طریق نظریه بازی

Abstract

We consider a system with multiple Femtocells (FCs) operating in a Macrocell. The transmissions in one Femtocell interfere with its neighboring Femtocells. Each Femtocell has multiple users, each requiring a minimum transmission rate. There is also peak transmit power constraint in each channel to control interference to the BS and the users in the Macrocell. We formulate the problem of channel allocation and power control in each Femtocell as a noncooperative Game. We develop efficient decentralized algorithms to obtain a Nash equilibrium (NE) that satisfies the Quality of Service (QoS) of each user, in an efficient way. We also obtain efficient decentralized algorithms to obtain fair NE when it may not be feasible to satisfy the QoS of all the users in FCs. Finally, we extend our algorithms to the case where there may be voice and data users in the system.

7. Conclusions

We have considered a channel and power allocation problem in a multiple FC environment when there are multiple users in each FC requiring different minimum rates. The channels need to be shared by the different FCs such that they do not cause much interference to each other and to the MC users. We have formulated the problem in a non-cooperative game theory setup and provided low complexity distributed algorithms to obtain Nash equilibria and correlated equilibria. We have extended our study to include the case when both the voice and data users are present in the system.