Spectrum and power allocation method, device and system for Femtocell network

Abstract

The invention discloses a spectrum and power allocation method, device and system for a Femtocell network. The spectrum and power allocation method comprises the steps of determining sub-channels capable of being occupied by an FBS (Femtocell Base Station) by using a spectrum sensing technology in a mixed spectrum access mode of the Femtocell network; calculating the transmitting power of FUE (Femtocell User Equipment) on one sub-channel according to the conditions that the interference received by the MBS is ensured to be less than a preset threshold and that transmitting terminal data of theFUE does not overflow; calculating the benefit of each alliance in all independent groups according to the transmitting power of the FUE on one sub-channel; and maximizing the alliance benefit by using an SQP algorithm, wherein the alliance is an FUE set occupying the same sub-channel; calculating the benefit of each independent group by using the sum of the alliance benefits in each independentgroup, calculating the allocated sub-channel and power again when the alliance changes by adopting a recursive accounting method until a Nash equilibrium state, and outputting the optimal spectrum andpower.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a method, device and system for allocating frequency spectrum and power of a Femtocell network, in particular to a method for allocating frequency spectrum and power based on alliance game in a hybrid overlay / underlay access mode Femtocell network, devices and systems. Background technique [0002] At present, more and more mobile communication services take place indoors, and people need greater network throughput to meet the growing demand for indoor communication. The traditional macro base station network is difficult to cope with the continuous and rapid growth of indoor communication services. Because the macro base station network cannot fully cover the indoor communication area, and when communicating with indoor users, it is vulnerable to wall penetration loss, which greatly reduces the communication quality. The emergence of Femtocell technology has brought...

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Problems solved by technology

[0007] Aiming at the deficiencies in the prior art, solve how to effectively allocate the frequency spectrum and sub-channel occupied by the FUE under the Femtocell network under the condition of ensuring the maximum throughput of the Femtocell base station and alleviating the common-layer interference and cross-layer interference in the Femtocell network in the prior art. For the problem of transmission power, the present invention proposes a spectrum and power allocation method, device and system for a Femtocell network. In the mixed spectrum access mode of a Femtocell network, the advantages of the overlay access mode and the underlay access mode are combined, which can not only alleviate The co-layer interference and cross-layer interference in the Femtocell network can also effectively increase the spectrum utilization rate, determine which sub-channel the user chooses to occupy and how much power to send, and ensure the maximum throughput without causing major interference to Macrocell layer users. , to realize the effective allocation of spectrum and transmission power of subchannels occupied by FUE in Femtocell network

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