Patent ID: 8548512
Filing Date: 2013-10-01
Classification: H04W

Abstract:
1. A base station for a mobile communication system, the base station comprising: a detecting unit configured to detect predetermined information regarding a user device; and a determining unit configured to determine types of channel quality information that need to be reported from the user device to the base station based on the detected information, wherein the determining unit is configured to select, based on the detected information, one of a wideband channel quality indicator indicating reception quality of an entire system frequency band allocated to the mobile communication system, and a combination of the wideband channel quality indicator and one or more channel quality indicators of subbands in the system frequency band as the channel quality information that needs to be reported from the user device to the base station, wherein, when a combination of a wideband channel quality indicator indicating reception quality of an entire system frequency band allocated to the mobile communication system and one or more channel quality indicators of subbands in the system frequency band is currently selected as the channel quality information that needs to be reported from the user device to the base station, the detecting unit is configured to detect a number of user devices in a cell or a sector formed by the base station; and the determining unit is configured to select, based on a first reference value for the number of user devices, as the channel quality information that needs to be reported from the user device to the base station.