System and method for reducing interference

摘要

A mobile communications system comprises a first group of one or more base stations which are arranged to communicate signals with mobile units via a wireless access interface by transmitting and/or receiving radio signals within a first frequency band; a second group of one or more base stations which are arranged to communicate signals with mobile units via a wireless access interface by transmitting and/or receiving radio signals within a second frequency band; and a controller. The controller is arranged in operation to determine an amount of interference in the first frequency band to radio signals for a first type of traffic where the interference is caused by radio signals for a second type of traffic in the second frequency band, wherein: the radio signals for the first type of traffic are to and/or from a first base station of the first group; and the radio signals for the second type of traffic are to and/or from to a second base station of the second group; and to, in response to the determined interference, generate instructions to influence the second group in respect of the transmission of the radio signals for the second type of traffic in the second frequency band, wherein the instructions are generated based on at least a priority for the first type of traffic and a priority for the second type of traffic. In one example, the first group of one or more base stations may be providing communications services to human to human communications (H2H), whereas the second group of one or more base stations may be providing communications services supporting machine type communications (MTC), where H2H communications are prioritizes over machine type communications. The second group of one or more base stations is therefore instructed to take action to reduce the interference caused by the mobile unit.

主权项

1. A mobile communications system comprising:
a first group of one or more base stations which are arranged to communicate signals with mobile units via a wireless access interface by transmitting and/or receiving radio signals within a first frequency band; a second group of one or more base stations which are arranged to communicate signals with mobile units via a wireless access interface by transmitting and/or receiving radio signals within a second frequency band; and a controller, wherein the controller is arranged in operation to:
determine an amount of interference in the first frequency band to radio signals for a first type of traffic where the interference is caused by radio signals for a second type of traffic in the second frequency band by calculating an amount of interference which is tolerated by the radio signals for the first type of traffic by transmission of the radio signals for the second type of traffic, wherein:
the radio signals for the first type of traffic are to and/or from a first base station of the first group; andthe radio signals for the second type of traffic are to and/or from to a second base station of the second group; andin response to the calculated amount of interference, generate instructions to control transmission of the radio signals for the second type of traffic in the second frequency band to be within the amount of interference which is tolerated by the radio signals for the first type of traffic, wherein the instructions are generated based on at least a priority for the first type of traffic and a priority for the second type of traffic and the calculated amount of interference is a function of an amount of communications traffic provided by the first group of one or more base stations to the attached mobile units.