Base station device, mobile station device, communication system, and communication method

摘要

A communication system which performs communication between a base station device configuring at least one cell and a mobile station device, wherein: the base station device includes: a synchronization signal generation unit which generates a synchronization signal corresponding to a cell identity for identifying a cell; and a transmission unit which generates a first transmission signal including the synchronization signal using a first parameter obtained from the cell identity, generates a second transmission signal excluding the synchronization signal using a second parameter obtained from a virtual cell identity different from the cell identity, transmits the first transmission signal using a first frequency band, and transmits the second transmission signal via a second frequency band different from the first frequency band. The mobile station device includes: a reception unit which receives a first reception signal including the synchronization signal using the first parameter obtained from the cell identity via the first frequency band and receives a second reception signal using the second parameter obtained from the virtual cell identity via the second frequency band.

主权项

1. A base station device configured to communicate with a mobile station device by carrier aggregation using a first cell and a second cell, the base station device comprising a memory and a processor coupled to the memory, the processor configured to:
generate a synchronization signal corresponding to a first cell identity for identifying a cell; and generate a first transmission signal including the synchronization signal, a first physical channel and a first reference signal, wherein the first physical channel and the first reference signal are generated based on the first cell identity, and generate a second transmission signal including a second physical channel and a second reference signal, wherein the second physical channel and the second reference signal are generated based on a second cell identity; send information indicating the second cell identity; and transmit the first transmission signal via a first frequency band, and transmit the second transmission signal via a second frequency band different from the first frequency band, wherein the second frequency band is a sub-component carrier with respect to the first frequency band, and the processor is configured to, after the mobile station device establishes connection in the cell via a cell search using the synchronization signal in the first transmission signal, start to send the information, the information being carried by the first transmission signal.