Power control for carrier aggregation on shared bands

摘要

There is provided, for example, an apparatus, which is caused to select a transmission power configuration for a communication with at least one user terminal taking place on component carriers of a carrier aggregation configuration within a shared band, wherein the selection is between a low transmission power configuration applying a transmission power below a predetermined power threshold without a listen-before-talk approach and a high transmission power configuration applying a transmission power of at least the predetermined power threshold; and upon detecting that the selected transmission power configuration needs to be informed, cause an indication of the selected transmission power configuration to the at least one user terminal and at least one secondary cell.

主权项

1. A method, comprising:
identifying, by circuitry, a primary component carrier corresponding to a primary communication system and at least one secondary component carrier corresponding to at least one secondary communication system, wherein the at least one secondary component carrier is within a shared band applicable to both the primary and secondary communication systems; performing periodic component carrier sensing of the at least one secondary component carrier to obtain carrier sensing information corresponding to the at least one secondary component carrier; determining a carrier aggregation configuration to be implemented in the primary communication system based on the identified primary component carrier and the at least one secondary component carrier, and the carrier sensing information; and acquiring indication of a transmission power configuration for a communication taking place on the carrier aggregation configuration within the shared band; and applying the determined carrier aggregation configuration and the indicated transmission power configuration in the communication performed on the carrier aggregation configuration.