摘要:
Contention based uplink transmission is efficiently performed. A scheduling unit selects, when uplink grant includes C-RNTI allocated to its device, the whole of radio resources indicated by this uplink grant. When uplink grant includes CB-RNTI, the scheduling unit randomly selects one radio resource from multiple radio resources indicated by this uplink grant. The scheduling unit generates control information for controlling a transmission unit so that PUSCH is multiplexed on the selected radio resource, and outputs it to a control unit. When blind decoding of multiple uplink grants including CB-RNTI has successfully been performed, the scheduling unit randomly selects one radio resource from the whole of multiple radio resources indicated by multiple uplink grants. The scheduling unit generates control information for controlling the transmission unit so that PUSCH is multiplexed on the selected radio resource, and outputs it to the control unit.
摘要:
A plurality of uplink and downlink component carriers are allocated from a base station apparatus, a common search space of a specific downlink component carrier of the allocated downlink component carriers is monitored, and random access processing is started in any one of the uplink component carriers. A mobile station apparatus applied to a communication system allocates to any mobile station apparatus the plurality of downlink component carriers including the common search space to be monitored together with any other mobile station apparatus. In performing random access to said base station apparatus, the mobile station apparatus extends a monitored object of a physical downlink control channel from a first common search space of the downlink component carrier to a second common search space of any downlink component carrier other than the downlink component carrier including the first common search space.
摘要:
A mobile station device communicates with a base station device. The mobile station device—includes a reception unit receiving downlink data and a downlink control channel including information indicating a radio resource for contention based signal transmission, and a transmission unit-transmitting at least one of ACK/NACK for the downlink data and a contention based signal when the ACK/NACK and the contention based signal collide with each other in the same uplink time frame.
摘要:
A communication system, a mobile station device, a base station device, and a processing method for carrying out processing involved in introducing a contention based uplink efficiently, and carrying out communication promptly are provided. A mobile station device communicating with a base station device in a mobile communication system obtains an uplink grant from the base station device, and when a timer for prohibiting transmission of a scheduling request is not running, uses a contention based uplink when the uplink grant is a grant for a contention based uplink, and when the timer for prohibiting transmission of a scheduling request is running, does not use the contention based uplink when the uplink grant is a grant for a contention based uplink.
摘要:
A mobile station device communicates with a base station device. The mobile station device—includes a reception unit receiving downlink data and a downlink control channel including information indicating a radio resource for contention based signal transmission, and a transmission unit-transmitting at least one of ACK/NACK for the downlink data and a contention based signal when the ACK/NACK and the contention based signal collide with each other in the same uplink time frame.
摘要:
A communication system, a mobile station device, a base station device, and a processing method for carrying out processing involved in introducing a contention based uplink efficiently, and carrying out communication promptly are provided. A mobile station device communicating with a base station device in a mobile communication system obtains an uplink grant from the base station device, and when the uplink grant is a normal grant, cancels a pending scheduling request, and when the uplink grant is a grant for a contention based uplink, not canceling the pending scheduling request.
摘要:
A base station device includes: a control signal generator that generates a signal of control data including items corresponding to the type of sub-frames to be allocated; a scheduling information signal generator that generates a signal of scheduling information indicating a sub-frame to be a first sub-frame among sub-frames specified by first-type sub-frame candidate information; and a multiplexer that allocates the signal of the control data to the first-type and second-type sub-frames, and allocates the signal of the scheduling information to the first-type sub-frame. A mobile station device includes: a frame-type determining unit that determines the type of each of received sub-frames based on the first-type sub-frame candidate information and the scheduling information; and a control data detector that detects, for each sub-frame, the control data including the items corresponding to the type indicated by the result of the determination by the frame-type determining unit. Accordingly, the processing load on reception of control data is reduced.
摘要:
Transmission power of a plurality of uplink carrier components used for radio communication by a mobile station device and a base station device is efficiently controlled. The mobile station device communicates by radio with the base station device using a plurality of component carriers. The mobile station device receives, from the base station device, downlink control information that includes information indicating radio resource assignment to a downlink shared channel disposed in any of downlink component carriers of a downlink control channel, and a TPC command to an uplink control channel in an uplink component carrier in which ACK/NACK to the downlink shared channel is transmitted.
摘要:
A radio communication system includes a base station device and a plurality of mobile station devices which radio-communicate with the base station device. The base station device allocates random access signal identifiers for identifying random access signals to the mobile station devices and decides an allocation period for each of the random access signal identifiers used by the mobile base stations. During the allocation period, each of the mobile station devices transmits a random access signal corresponding to the allocated random access signal identifier. Thus, it is possible to suppress a delay until the random access procedure using a dedicated preamble is complete.
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.