摘要:
In a radio communication method non-contiguously using a frequency, notification information is reduced, while suppressing an effect on performance. In a communication apparatus which switches between a communication method contiguously using a frequency and a communication method non-contiguously using the frequency, sets a parameter corresponding to each communication method, and performs radio communication, the communication apparatus sets a same parameter to an entire frequency band in the communication method contiguously using the frequency, while dividing a frequency band into a plurality of frequency bands and setting a different parameter for each divided frequency band in the communication method non-contiguously using the frequency. The communication method contiguously using the frequency and the communication method non-contiguously using the frequency mutually have different PAPR (Peak to Average Power Ratio) characteristics.
摘要:
In the case that periodical transmission of transmission signal number-of-sequence quality indicative signal cannot be performed, the number of transmission signal sequences is clarified in association with reception quality information that is generated immediately after the case, and the base station apparatus performs appropriate communication resource allocation. A mobile station apparatus has a feedback information control section 65 that generates feedback information including reception quality information, transmission signal preprocessing information and transmission signal number-of-sequence information, and a radio transmission section 51 that periodically transmits the generated feedback information to the base station apparatus, where when the radio transmission section 51 does not transmit the transmission signal number-of-sequence information with communication resources periodically allocated from the base station apparatus so as to transmit the transmission signal number-of-sequence information, the radio transmission section 51 transmits the transmission signal number-of-sequence information to the base station apparatus with communication resources enabling transmission of the feedback information allocated from the base station apparatus subsequently to the communication resources.
摘要:
To provide a wireless communication system, a mobile station apparatus and a base station apparatus which reduce a resource overhead in the transmission of an aperiodic SRS, and are not accompanied with a major change from the specification of the LTE. The wireless communication system includes the base station apparatus and the mobile station apparatus transmitting a data signal to the base station apparatus by SC-FDMA (Single Carrier Frequency Division Multiple Access) system, and the mobile station apparatus transmits a reference signal for channel measurement to the base station apparatus, and the reference signal for channel measurement is transmitted using a channel for data transmission allocated for each of the mobile station apparatuses from the base station apparatus.
摘要:
In the case that the transmission signal precoding information cannot be transmitted, the transmission signal precoding information is clarified that is used to calculate the reception quality information performed immediately after the case, and a base station apparatus perform suitable communication resource allocation. A mobile station apparatus has a feedback information control section 65 that generates feedback information including the reception quality information and the transmission signal precoding information, and transmission sections 41, 43 to 45 and 47 that transmit the generated feedback information to the base station apparatus, and when the transmission sections 41, 43 to 45 and 47 do not transmit the transmission signal precoding information with communication resources allocated from the base station apparatus to transmit the transmission signal precoding information, the feedback information control section calculates the reception quality information transmitted for a period during which the sections do not transmit the transmission signal precoding information and next transmit the transmission signal precoding information, using beforehand defined transmission signal precoding information.
摘要:
There are provided a base station, a terminal, and a communication system in a wireless communication system in which a base station and a terminal communicate with each other, in which the base station and the terminal can efficiently perform communication. The communication system includes a higher layer processing unit 605 configured to configure, at the base station, for each terminal, a first reference signal configuration for configuring a measurement target for channel state reporting, configured to configure, at the base station, for each terminal, a second reference signal configuration specifying a resource element to be excluded from the target of data demodulation in a case where the terminal demodulates data, and configured to configure, at the base station, for each terminal, a third reference signal configuration for configuring a measurement target for which a reference signal received power is to be measured by the terminal.
摘要:
Regarding an uplink demodulation reference signal to which a cyclic shift and an orthogonal cover code is applied, IFDM is applied to the uplink demodulation reference signal while retaining the number of bits of control information that specifies a cyclic shift and an orthogonal cover code transmitted from a base station apparatus to a mobile station apparatus. A subcarrier offset and a subcarrier interval based on IFDM are uniquely determined in accordance with the cyclic shift and the orthogonal cover code of the uplink demodulation reference signal, reported from the base station apparatus to the mobile station apparatus.
摘要:
There are provided a base station, a terminal, a communication system, and a communication method in a communication system in which a base station 101 and a terminal 102 communicate with each other, in which the base station 101 can efficiently notify the terminal 102 of control information. The terminal includes a receiving unit 605 configured to receive a radio resource control signal including information concerning a path loss reference resource and information concerning an uplink power control related parameter configuration, and a transmit power control unit 6015 configured to set a path loss and an uplink transmit power on the basis of the information concerning the path loss reference resource and the information concerning the uplink power control related parameter configuration.
摘要:
To provide a mobile station apparatus, a base station apparatus, a method and an integrated circuit which are capable of dissolving complexity of setting by the base station apparatus and performing efficient scheduling by improving the orthogonality of resources of a reference signal for every antenna. A mobile station apparatus which transmits a sounding reference signal to a base station apparatus using a plurality of antenna ports, wherein based on one value set specifically to a mobile station apparatus by a parameter notified of by a higher layer from the base station apparatus, a cyclic shift applied to a sounding reference signal corresponding to the plurality of antenna ports is determined.
摘要:
Mobile station apparatuses are provided that receive downlink allocation information from a base station apparatus in a downlink control channel. Each mobile station apparatus performs demodulation, decoding, and cyclic redundancy check on the downlink shared channel in accordance with the downlink allocation information received. Each mobile station apparatus generates an acknowledgement or a non-acknowledgement in accordance with the result of the cyclic redundancy check. Each mobile station apparatus then selects the lowest number and the second lowest number of the numbers of the control channel elements in which the downlink allocation information is received. Based on the selected numbers, each mobile station apparatus 2 obtains a physical resource block (PRB), as well as a cyclic shift and an orthogonal code sequence in the time domain for each transmission antenna, and spreads the acknowledgement or the non-acknowledgement and the uplink pilot channel.
摘要:
In the case that periodical transmission of transmission signal number-of-sequence quality indicative signal cannot be performed, the number of transmission signal sequences is clarified in association with reception quality information that is generated immediately after the case, and the base station apparatus performs appropriate communication resource allocation. A mobile station apparatus has a feedback information control section 65 that generates feedback information including reception quality information, transmission signal preprocessing information and transmission signal number-of-sequence information, and a radio transmission section 51 that periodically transmits the generated feedback information to the base station apparatus, where when the radio transmission section 51 does not transmit the transmission signal number-of-sequence information with communication resources periodically allocated from the base station apparatus so as to transmit the transmission signal number-of-sequence information, the radio transmission section 51 transmits the transmission signal number-of-sequence information to the base station apparatus with communication resources enabling transmission of the feedback information allocated from the base station apparatus subsequently to the communication resources.