Method for reducing inter-Femtocell interference and Femtocell base station

摘要

The present invention discloses a method for reducing inter-Femtocell interference, including: obtaining an average channel gain of all available channels; determining whether the average channel gain is greater than a preset threshold; if the average channel gain is greater than the preset threshold, determining, by using spectrum sensing, a P channel and an N channel, where the P channel is one or more available channels causing greatest interference and the N channel is one or more available channels suffering greatest interference; and transmitting or receiving a signal in an available channel other than the P channel and the N channel.

主权项

1. A method for reducing inter-Femtocell interference, comprising:
obtaining an average channel gain of all available channels; determining whether the average channel gain is greater than a preset threshold; if the average channel gain is greater than the preset threshold, determining a P channel and an N channel by using spectrum sensing, wherein the P channel is one or more available channels causing greatest interference and the N channel is one or more available channels suffering greatest interference,
wherein the determining the N channel by using spectrum sensing comprises:obtaining, by using spectrum sensing, first interference power received from other Femtocell base stations in each available channel;transmitting a sounding signal in one available channel, and when transmitting the sounding signal, obtaining, by using spectrum sensing, second interference power received from other Femtocell base stations in each available channel;calculating an interference power variation value between the second interference power and the first interference power in each available channel; anddetermining one or more channels corresponding to a greatest interference power variation value to be the N channel; and transmitting or receiving a signal in an available channel other than the P channel and the N channel.