| 摘要 |
A resource allocation method and a base station in an orthogonal frequency division multiplexing system are used by a base station to allocate a resource. The method in embodiments of the present invention includes: acquiring, by the base station, channel state information CSI of a current scheduling timeslot; obtaining a compensation factor according to the CSI and a preset packet error ratio, where the compensation factor is a value corresponding to the preset packet error ratio in an inverse cumulative distribution function of a non-central chi-square random variable and a non-central parameter; replacing the CSI with the compensation factor, and determining a functional relationship between rate and power of sending data by the base station if a packet error ratio of the base station is less than or equal to the preset packet error ratio; and determining, according to the functional relationship and a generalized dynamic back pressure algorithm, the rate and total power of sending data by the base station, so as to minimize the total power of the base station. Through the embodiments of the present invention, an impact on the packet error ratio caused by inaccuracy of non-ideal CSI can be effectively reduced, and the rate and the power of sending data are determined on the basis of considering a power-time delay trade-off relationship when the base station sends data, thereby reducing total power consumption. |
