摘要:
Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that the preamble transmission time band and the SRS transmission time band are in the same transmission time band. An SRS transmission band decision unit (103) decides a time interval of a transmission time band which can transmit the SRS according to the preamble transmission time interval inputted from a preamble transmission band decision unit (101) and the correlation rule setting unit (102).
摘要:
Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that the preamble transmission time band and the SRS transmission time band are in the same transmission time band. An SRS transmission band decision unit (103) decides a time interval of a transmission time band which can transmit the SRS according to the preamble transmission time interval inputted from a preamble transmission band decision unit (101) and the correlation rule setting unit (102).
摘要:
Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that the preamble transmission time band and the SRS transmission time band are in the same transmission time band. An SRS transmission band decision unit (103) decides a time interval of a transmission time band which can transmit the SRS according to the preamble transmission time interval inputted from a preamble transmission band decision unit (101) and the correlation rule setting unit (102).
摘要:
Provided is a radio communication base station device capable of obtaining a large multi-user diversity effect while suppressing increase of overhead of a communication signal. The radio communication base station device includes a scheduler (101) which performs scheduling for allocating RB (Resource Block) to terminals belonging to a first group by FSA (Frequency Scheduled Allocation) in accordance with line quality of each terminal and each RB and allocating remaining RB other than the RB allocated to the terminals belonging to the first group, to terminals belonging to a second group according to a predetermined allocation rule. That is, the scheduler (101) performs RB allocation to the terminals belonging to the first group with a higher priority than RB allocation to the terminals belonging to the second group. Each time the scheduler (101) performs FSA, it outputs the result of the FSA to the terminals belonging to the first group to an encoding unit (102) and an extraction unit (111) and does not output any scheduling result to the terminals belonging to the second group.
摘要:
It is possible to provide a radio transmission device and a radio transmission method capable of improving resource use efficiency without increasing or decreasing the number of Signatures. The device and the method use a Signature table having Access types, DL CQI, and Signatures uniquely correlated to one another. In this Signature table, the DL CQI level is set for each Access type in accordance with the data amount transmitted/received before a data communication start after a transmission of RACH. When the Access type is IDLE, the data amount is greater as compared to other Access types and the DL CQI is set to level 1 to 6. When the Access type is ACTIVE, the data amount is smaller as compared to other Access types and the DL CQI is set to smaller than level 3 and greater than level 4. Furthermore, when the Access type is Handover, the data amount is middling as compared to other Access types and the DL CQI is set to level 1 to 3 or above.
摘要:
Disclosed are a radio transmission device and a radio transmission method which can reduce a processing amount or a memory amount while maintaining the randomizing effect of other cell interference. When using as a reference signal, a ZC sequence of the sequence length uniquely correlated to a transmission bandwidth of a reference signal, as the transmission bandwidth becomes smaller and the sequence length of the ZC sequence becomes shorter, the sequence is switched at a shorter time interval and as the transmission bandwidth becomes greater and the sequence length of the ZC sequence becomes longer, the switching is performed at a longer time interval. Thus, a reference signal is generated by using the ZC sequence in accordance with the timing into which the reference signal transmission bandwidth and the sequence are switched.
摘要:
Disclosed are a radio sending device and a radio sending method for improving a throughput while keeping a receiving quality. In this radio sending device, an MCS switching control unit (102) applies an MCS parameter having a lower quality required than that of the MCS parameter to be applied to send data arranged at other than the two end portions of a block, to send data arranged at the two end portions of the block, and a CP adding unit (105) adds such a CP to the leading end of the block as is created by copying the trailing end portion of the block composed of the send data, to which the MCS parameter is applied by the MCS switching control unit (102), with a length less than the delay time of the maximum delay wave. A send RF unit (106) sends the send data, in which the CP is added to the leading end of the block, from an antenna (107).
摘要:
A mobile station apparatus includes a receiving unit configured to receive control information; a selecting unit configured to randomly select a sequence from a plurality of sequences contained in one group of a plurality of groups, into which a predetermined number of sequences generated from a plurality of base sequences are grouped and which are respectively associated with different amounts of data or reception qualities; and a transmitting unit for transmitting the selected sequence. The predetermined number of sequences are grouped by partitioning the predetermined number of sequences, in which sequences generated from the same base sequence and having different cyclic shifts are arranged in an increasing order of the cyclic shifts. A position at which the predetermined number of sequences are partitioned is determined based on the control information, and a number of sequences contained in each of the plurality of groups varies in accordance with the control information.
摘要:
A wireless communication apparatus wherein the performance can be prevented from degrading due to the affection of a frequency offset, while the sequence length of Zadoff-Chu sequence (ZC sequence) being kept long. In this wireless communication apparatus, a ZC sequence generating part (11) generates a ZC sequence corresponding to a preamble number that is selected at random and then inputted; a randomizing part (12) randomizes the ZC sequence; a preamble generating part (13) generates a preamble from the randomized ZC sequence; and a radio transmitting part (14) transmits, via an antenna (15), the preamble after subjecting it to predetermined radio transmission processes, such as a D/A conversion, an up-conversion and so on. For example, the randomizing part (12) multiplies the ZC sequence by a PN sequence so as to randomize the ZC sequence.
摘要:
Provided is a radio communication base station device which can suppress a use amount of an SRS communication resource. In this device, a correlation rule setting unit (102) sets a rule for correlating a preamble with an SRS transmission time interval so that the preamble transmission time band and the SRS transmission time band are in the same transmission time band. An SRS transmission band decision unit (103) decides a time interval of a transmission time band which can transmit the SRS according to the preamble transmission time interval inputted from a preamble transmission band decision unit (101) and the correlation rule setting unit (102).