摘要:
A base station for communicating with a first user equipment terminal within a first system band and communicating with a second user equipment terminal within a second system band includes a first reference signal sequence generating unit configured to generate M types of reference signal sequences; a second reference signal sequence generating unit configured to generate N (N>M) types of reference signal sequences; a scheduling unit configured to allocate resource blocks to the first user equipment terminal and the second user equipment terminal; a signal multiplexing unit configured to multiplex the M types of reference signal sequences into the resource block for the first user equipment terminal and multiplex the N types of reference signal sequences into the resource block for the second user equipment terminal; and a transmitting unit configured to transmit signals including the M types of reference signal sequences and the N types of reference signal sequences.
摘要:
A disclosed base station apparatus is capable of communicating with a user equipment terminal in a multi-input multi-output (MIMO) mobile communication system using Pre-coding. The base station apparatus includes a receiving unit receiving a Pre-coding Matrix Indicator (PMI) indicating a specific Pre-coding matrix, a determination unit determining a value of a flag indicator indicating whether the Pre-coding matrix specified in the PMI is to be used for downlink communications, a control signal generation unit generating a downlink control signal including at least the flag indicator, and a transmission unit transmitting a signal including the downlink control signal in downlink.
摘要:
Provided is a radio base station apparatus capable of selecting an optimal modulation and coding scheme for each transmission stream easily. The radio base station apparatus has a CQI information decoder (101) configured to decode CQIs of plural downlink transmission streams and an MCS selector (102) that has an N-dimensional table (two-dimensional reference table (1021)) in accordance with the number N of downlink transmission streams where combinations of modulation and coding scheme between the plural downlink transmission streams are defined in accordance with each of the CQIs of the downlink transmission streams and is configured to select from the combinations of modulation and coding scheme for the downlink transmission streams based on each of the CQIs of the downlink transmission streams decoded by the CQI information decoder (101).
摘要:
A base station communicating using multiple antennas includes a direction-of-arrival (DOA) estimation unit configured to estimate a direction of arrival based on a signal from a mobile station and to output direction-of-arrival information regarding the estimated direction of arrival; a DOA information multiplexing unit configured to multiplex the direction-of-arrival information from the direction-of-arrival estimation unit with a shared data channel to be transmitted to the mobile station; and an antenna weight multiplying unit configured to multiply a signal to be transmitted to the mobile station and including the shared data channel multiplexed with the direction-of-arrival information by antenna weights obtained based on the direction-of-arrival information from the direction-of-arrival estimation unit.
摘要:
The present invention provides a base station apparatus, a mobile terminal apparatus and a communication control method that can adequately allocate resources of response signals for retransmission for spatially-multiplexed signals respectively corresponding to a plurality of layers via the uplink and that support next-generation mobile communication systems. Discloses is a configuration to receive signals in which a plurality of layers are spatially-multiplexed on the uplink from a mobile terminal apparatus (10), generate HARQ ACK/NACK for signals received in the layers on the uplink, and allocate HARQ ACK/NACK for transport blocks associated with the layers, to PHICH resources, using the offset values that are fixedly defined in advance with the mobile terminal apparatus (10) for every uplink layer.
摘要:
To use CSI feedback information capable of sufficiently supporting MU-MIMO transmission and CoMP transmission in LTE-A systems, in a radio communication method of the invention, a radio base station apparatus (200) generates downlink transmission data including a report mode corresponding to a bandwidth to perform feedback of feedback information including channel quality information and spatial channel information, and an extension level of the feedback information, and multiplexes the downlink transmission data and a reference signal for feedback information to transmit to a mobile terminal apparatus (100), and the mobile terminal apparatus (100) receives a downlink signal including the report mode and the extension level, and generates feedback information associated with the report mode and the extension level to transmit to the radio base station apparatus (200).
摘要:
An approach for resource allocation in a wireless communication network including a sender, a relay station and a receiver in case of a retransmission of information from the relay station to the receiver is described, wherein a resource necessary for retransmission is determined on the basis of the relayed channel and the relay function.
摘要:
Provided is a radio base station apparatus capable of selecting an optimal modulation and coding scheme for each transmission stream easily. The radio base station apparatus has a CQI information decoder (101) configured to decode CQIs of plural downlink transmission streams and an MCS selector (102) that has an N-dimensional table (two-dimensional reference table (1021)) in accordance with the number N of downlink transmission streams where combinations of modulation and coding scheme between the plural downlink transmission streams are defined in accordance with each of the CQIs of the downlink transmission streams and is configured to select from the combinations of modulation and coding scheme for the downlink transmission streams based on each of the CQIs of the downlink transmission streams decoded by the CQI information decoder (101).
摘要:
A user apparatus in a mobile communications system is disclosed. The user apparatus includes a unit which receives, from a base station apparatus, a downlink control signal including information for allocating a radio resource; a unit which determines, depending on a channel status, a pre-encoding matrix indicator (PMI) which indicates a pre-encoding matrix to be applied to multiple antennas of the base station apparatus; and a unit which transmits, to the base station apparatus, an uplink signal including the PMI, wherein, if the radio resource is allocated to a physical uplink shared channel of the user apparatus, the PMI is transmitted using a part of the radio resource, and, wherein, if the radio resource is not allocated to the physical uplink shared channel of the user apparatus, the PMI is transmitted in a physical uplink control channel which is allocated, in a fixed manner, to the user apparatus.
摘要:
A disclosed base station apparatus is capable of communicating with a user equipment terminal in a multi-input multi-output (MIMO) mobile communication system using Pre-coding. The base station apparatus includes a receiving unit receiving a Pre-coding Matrix Indicator (PMI) indicating a specific Pre-coding matrix, a determination unit determining a value of a flag indicator indicating whether the Pre-coding matrix specified in the PMI is to be used for downlink communications, a control signal generation unit generating a downlink control signal including at least the flag indicator, and a transmission unit transmitting a signal including the downlink control signal in downlink.