UPLINK SWITCHING OF COMMUNICATION LINKS FOR MOBILE STATIONS IN DUAL CONNECTIVITY

摘要

The invention relates to a method for configuring subframes for uplink/downlink communication for a mobile station (UE) not supporting dual uplink but located in a communication system supporting dual connectivity. The UE is connected simultaneously to two base stations via a respective communication link. An uplink transmission pattern is determined, defining whether subframes are usable for uplink communication to the first or second base station or for switching the uplink communication between the two communication links. Based on the determined uplink transmission pattern, and further based on configuration of the mobile station for supporting dual reception or not, a downlink reception is derived for downlink communication between the two base stations and the mobile station, the downlink reception pattern defining whether the subframes are usable for downlink communication from the first or second base station or for switching the downlink communication between the two communication links.

主权项

1. A method for configuring a plurality of subframes in a mobile communication system for uplink and downlink, wherein a mobile station is connected via a first communication link to a first base station and via a second communication link to a second base station, the method comprising the following steps performed by the mobile station:
receiving an uplink transmission pattern and a reception configuration indication, which configures the mobile station to support or not support simultaneous reception of data from the first base station and the second base station within the same subframe, wherein the received uplink transmission pattern includes information on a predetermined number of subframes defining which subframes are usable by the mobile station for uplink transmissions via the first communication link to the first base station, and/or which subframes are usable by the mobile station for uplink transmissions via the second communication link to the second base station and which subframes are usable by the mobile station for switching uplink communication between the first and the second communication link, determining, based on the received uplink transmission pattern and on the received reception configuration indication, a downlink reception pattern defining which subframes are usable by the mobile station for downlink reception via the first communication link from the first base station, and/or which subframes are usable by the mobile station for downlink reception via the second communication link from the second base station and/or which subframes are usable by the mobile station for switching downlink communication between the first and the second communication link.