Mobile cloud computing is process to compute the resources between multiple mobile devices. The mobile users demand a certain level of Quality of Services (QoSs) of their device. In this paper, the authors are Identify, Formulate, and address the problem of QoS. The bandwidth sifting alone is not sufficient for maintaining QoS-guaranteed because of verifying spectral efficiency across the multiple channels. For maximum utility problem they formulate bandwidth redistribution and by using modified descending bid auction solved it.