Patent ID: 8014326
Filing Date: 2011-09-06
Classification: H04L,H04W,Y02D

Abstract:
1. A method for allocating resources to a set of mobile stations (MS) communicating with a base station (BS) in an orthogonal frequency-division multiple-access (OFDMA), and time-division multiple-access (TDMA) network, comprising: optimizing a total power consumption P by the set of MSs by minimizing the power P according to subject to for k=1, 2, . . . , K, where for n=1, 2, . . . , N, t k,n ≧0 for all k and n, and c k,n ≧0 for all k and n, wherein K is a number of MS k, N is a number of frequency bands n, t is a transmission time interval for each symbol, c is a data rate in bits per symbol, σ 2 is additive white Gaussian noise (AWGN) power, α k,n is a power gain of each channel, B is a bandwidth of each channel in Hz, R k is a guaranteed data rate in bits per second for each MS; and transmitting the symbols from the set of MS to the BS with power according to the optimized total power consumption.