Patent ID: 8289913
Filing Date: 2012-10-16
Classification: H04W

Abstract:
1. A base station device that performs wireless communication with a mobile station device, the base station comprising: a random access identification information storage that is configured to store random access identification information and mobile station device identification information correlated with the random access identification information, wherein the random access identification information being allocated by the base station device to the mobile station device and the mobile station device identification information identifying the mobile station device; a random access receiver that is configured to receive random access identification information transmitted by the mobile station device having performed random access; a scheduler that is configured to determine whether to transmit random access response information that is a response to the random access corresponding to the random access identification information received from the mobile station device, by using the mobile station device identification information or by using identification information having not been allocated to a specific mobile station device and being allocated for transmitting the response to the random access in case that the random access identification information received is stored in the random access identification information storage while being correlated with the mobile station device identification information; and a transmitter that is configured to allocate and transmit the random access response information based on the determination by the scheduler, wherein the scheduler determines, based on an amount of downlink traffic, whether to transmit the random access response information by using the mobile station device identification information or by using the identification information having not been allocated to a specific mobile station device and being allocated for transmitting the response to the random access in case that the random access identification information received is stored in the random access identification information storage while being correlated with the mobile station device identification information.