摘要:
A communication method for sounding reference signal transmission is provided. A communication method of a user equipment in a mobile communication system in which a base station apparatus schedules a physical uplink shared channel in an uplink component carrier by using a downlink control information format, the method comprising: receiving, from the base station apparatus, the downlink control information format including first information which instructs to transmit sounding reference signal and second information which indicates the uplink component carrier in which the physical uplink shared channel is scheduled by the downlink control information format, transmitting, to the base station apparatus, sounding reference signal on the uplink component carrier indicated by the second information in case that the first information is detected.
摘要:
A communication method for sounding reference signal transmission is provided. A communication method of a user equipment in a mobile communication system in which a base station apparatus schedules a physical uplink shared channel in an uplink component carrier by using a downlink control information format, the method comprising: receiving, from the base station apparatus, the downlink control information format including first information which instructs to transmit sounding reference signal and second information which indicates the uplink component carrier in which the physical uplink shared channel is scheduled by the downlink control information format, transmitting, to the base station apparatus, sounding reference signal on the uplink component carrier indicated by the second information in case that the first information is detected.
摘要:
For efficient transmission of a first reference signal and a second reference signal for channel estimation without deteriorating a channel estimation accuracy, and without deteriorating a communication quality, a mobile station apparatus, in the case where a transmission of the first reference signal and a transmission of the second reference signal coincide in the same timing (Step S101, YES), performs transmission of the first reference signal (Step S102), and in contrast, in the case where a transmission of the first reference signal and a transmission of the second reference signal have happened to coincide in different component carriers in the same timing (Step S101, NO), performs a transmission of the first reference signal and a transmission of the second reference signal simultaneously (Step S103).
摘要:
Provided are a communication system, a base station apparatus, a mobile station apparatus, and a communication method for reducing interference between uncoordinated adjacent cells. The communication system of the present invention comprises a base station apparatus and a mobile station apparatus. The base station apparatus notifies the mobile station apparatus of a downlink control information format, the downlink control information format including resource allocation information that dictates switching of resource allocation of an uplink demodulation reference signal localized resource allocation and distributed resource allocation, and a frequency offset of the distributed resource allocation of the uplink demodulation reference signal specific to the mobile station apparatus. The mobile station apparatus determines the resource allocation of the uplink demodulation reference signal in accordance with the frequency offset of the mobile station apparatus when information comprised in the downlink control information format dictates the distributed resource allocation in the resource allocation information, and transmits the uplink demodulation reference signal to the base station apparatus.
摘要:
Based on a sounding reference signal, a base station apparatus performs efficient scheduling. The base station apparatus includes information for requesting the transmission of the sounding reference signal in a first downlink control information format or a second downlink control information format, and transmits the information to the mobile station apparatus, the mobile station apparatus transmits, based on detection of the information, the sounding reference signal to the base station apparatus, and a first parameter used for the transmission of the sounding reference signal based on the detection of the information included in the first downlink control information format and a second parameter used for the transmission of the sounding reference signal based on the detection of the information included in the second downlink control information format are individually set by a signal of a higher layer transmitted from the base station apparatus.
摘要:
A mobile communication system and a communication method are provided in which, a base station apparatus can efficiently allocate, to a mobile station apparatus, an uplink resource for transmitting information indicating an ACK/NACK for downlink data. The mobile station apparatus that communicates with the base station apparatus, comprising: a scheduling unit configured to determine two physical uplink control channel resources for a transmission using a physical downlink shared channel in a case that a downlink transmission mode that supports the transmission of up to two downlink transport blocks using the physical downlink shared channel is configured for the secondary cell, and a physical downlink control channel that indicates the transmission using the physical downlink shared channel on the secondary cell is detected on the secondary cell.
摘要:
It is possible to perform effective communication based on an A-SRS transmitted from a mobile station apparatus. A base station apparatus: notifies the mobile station apparatus of control information for setting, to the mobile station apparatus, whether to transmit a first sounding reference signal assigned in a physical uplink shared channel resource or to transmit a second sounding reference signal assigned in a resource different from the physical uplink shared channel resource; and notifies the mobile station apparatus of an uplink grant including an indication of transmission of a sounding reference signal. When receiving the indication of transmission of the sounding reference signal included in the uplink grant, the mobile station apparatus transmits the first sounding reference signal to the base station apparatus when the transmission of the first sounding reference signal is set by transmission control information, and transmits the second sounding reference signal to the base station apparatus when the transmission of the second sounding reference signal is set by the transmission control information.
摘要:
In a radio communication system including a plurality of mobile station apparatuses and a base station apparatus, a physical uplink reference signal and a physical uplink control channel signal are efficiently controlled and the mobile station apparatus appropriately transmits a signal. The mobile station apparatus includes: a radio resource control unit 403 that sets a radio resource of a reference signal for measuring channel quality and a radio resource of a physical uplink control channel; a simultaneous transmission control unit 4051 which, when transmitting the physical uplink control channel signal in a time frame in which the radio resource of the reference signal has been set, controls a signal transmission processing depending on whether each radio resource has been set to the same component frequency band or each radio resource has been set to a different component frequency band; and a transmission processing unit 407 that transmits the reference signal and/or the physical uplink control channel signal based on the control of the simultaneous transmission control unit.
摘要:
To provide a mobile communication system and communication method for efficient scheduling to be performed when a base station apparatus notifies a mobile station apparatus of a plurality of downlink control information formats in the same subframe and/or for some particular time period, in a mobile communication system comprised of a base station apparatus and a mobile station apparatus, the base station apparatus notifies the mobile station apparatus of a plurality of downlink control information formats including at least one downlink control information format including instructions for transmission of a sounding reference signal and a parameter in the same subframe, and the mobile station apparatus transmits a sounding reference signal set based on the parameter to the base station apparatus when among the plurality of downlink control information formats, a predetermined downlink control information format includes instructions for transmission of a sounding reference signal and the parameter.
摘要:
Based on a sounding reference signal, a base station apparatus performs efficient scheduling. The base station apparatus includes information for requesting the transmission of the sounding reference signal in a first downlink control information format or a second downlink control information format, and transmits the information to the mobile station apparatus, the mobile station apparatus transmits, based on detection of the information, the sounding reference signal to the base station apparatus, and a first parameter used for the transmission of the sounding reference signal based on the detection of the information included in the first downlink control information format and a second parameter used for the transmission of the sounding reference signal based on the detection of the information included in the second downlink control information format are individually set by a signal of a higher layer transmitted from the base station apparatus.