Method and apparatus for saving energy in mobile communication system base station

摘要

A method for achieving energy-saving in a mobile communication system base station, for application in an LTE system, comprising: determining the average value of a downlink sub-frame traffic load; determining, when the average value of the downlink sub-frame traffic load is below a threshold value therefore, an MBSFN downlink sub-frame which is not carrying multicast traffic; and closing the radio frequency channel corresponding to the multicast symbol in the MBSFN downlink sub-frame which is not carrying multicast traffic. By using the method, the number of downlink sub-frames required to meet the communication traffic needs of a current cell is judged according to changes in the traffic load observed by measuring the traffic load values in that cell; sub-frames which can be closed are set as MBSFN downlink sub-frames which do not send multicast traffic; radio frequency channels occupied by the multicast symbol are closed, thereby reducing energy consumption.

主权项

1. A method for energy saving of a base station in a mobile communication system, comprising:
determining an average of downlink sub-frames traffic load; determining a Multicast Broadcast Single Frequency Network (MBSFN) downlink sub-frame in which no multicast service is borne when the average of downlink sub-frames traffic load is below a downlink sub-frame traffic load threshold; and disabling a radio frequency channel corresponding to multicast symbols in the MBSFN downlink sub-frame in which no multicast service is borne.