摘要:
To switch among access schemes of different systems efficiently, in a wireless communication system for selecting one access scheme from among a plurality of access schemes to perform wireless communications in between a control station apparatus and a terminal apparatus, the control station apparatus notifies the terminal apparatus of an access scheme using information indirectly designating the access scheme, and the terminal apparatus selects one access scheme from among a plurality of access schemes according to the notified information to perform wireless communications with the control station apparatus.
摘要:
To switch among access schemes of different systems efficiently, in a wireless communication system for selecting one access scheme from among a plurality of access schemes to perform wireless communications in between a control station apparatus and a terminal apparatus, the control station apparatus notifies the terminal apparatus of an access scheme using information indirectly designating the access scheme, and the terminal apparatus selects one access scheme from among a plurality of access schemes according to the notified information to perform wireless communications with the control station apparatus.
摘要:
A receiving antenna diversity effect is improved by equalizing the likelihood while exchanging the likelihood among a plurality of equalizers. A receiving apparatus (300) which receives radio signals using antennas (301-1 to 301-M), includes: pilot separation sections (304-1 to 304-M) separating a pilot signal and a received data signal from the radio signals; a channel estimation section (305) calculating a channel estimation value corresponding to each of the antennas (301-1 to 301-M) according to the pilot signal; and a reception processing section (306) performing signal detection for the received data signal corresponding to each of the antennas (301-1 to 301-M) and having a plurality of equalization sections each generating likelihood information according to the received data signal and the channel estimation value, wherein any one of the equalization sections generates likelihood information using the likelihood information generated by another equalization section and also outputs the generated likelihood information to another equalization section.
摘要:
Even when an amplifier has a comparatively narrow linear region in a terminal, it is possible to suppress degradation of the transmission characteristic by using single-carrier transmission between the terminal and a relay device while using multi-carrier transmission between the relay device and a base station on an uplink of a communication system. The relay station (1) includes: a single-carrier signal receiving portion (12) which receives a single-carrier signal from the terminal and performs signal processing; a converting portion (13) which converts a time region symbol output from the single-carrier signal receiving portion (12) into a frequency domain symbol; and a multi-carrier signal transmitting portion (14) which makes the symbol converted by the converting portion (13) to be a multi-carrier signal and transmits the multi-carrier signal to the base station.
摘要:
Provided is a communication system that can allocate resources on an uplink for a CQI report, and can reduce the overhead of the CQI relay transmission from a relay station apparatus to a base station apparatus. To each mobile station apparatus (501, 502) that transmits CQI directly to a base station apparatus (500), resource blocks on a base station apparatus uplink to be used for the transmission of each CQI to the base station apparatus are allocated. Resource blocks on the base station apparatus uplink to be used for each relay station to relay-transmit to the base station apparatus CQI received from the mobile station apparatuses are allocated on the basis of the allocation result of resource blocks on a relay station apparatus uplink for each relay station apparatus (510, 520). To mobile station apparatuses that transmit CQI to the base station apparatus via each relay station apparatus, resource blocks on the relay station apparatus uplink to be used for the transmission of CQI to the relay station apparatus are allocated.
摘要:
Provided is a communication system that can allocate resources on an uplink for a CQI report, and can reduce the overhead of the CQI relay transmission from a relay station apparatus to a base station apparatus. To each mobile station apparatus (501, 502) that transmits CQI directly to a base station apparatus (500), resource blocks on a base station apparatus uplink to be used for the transmission of each CQI to the base station apparatus are allocated. Resource blocks on the base station apparatus uplink to be used for each relay station to relay-transmit to the base station apparatus CQI received from the mobile station apparatuses are allocated on the basis of the allocation result of resource blocks on a relay station apparatus uplink for each relay station apparatus (510, 520). To mobile station apparatuses that transmit CQI to the base station apparatus via each relay station apparatus, resource blocks on the relay station apparatus uplink to be used for the transmission of CQI to the relay station apparatus are allocated.
摘要:
A base station device performs communication with terminal devices, and includes a load information acquisition section which acquires load information which shows a load on the base station device, a reporting method selection section which selects a reporting method for the terminal devices to report reception state information to the base station device based on load information acquired by the load information acquisition section, and a reporting section which reports the reporting method selected by the reporting method selection section to the terminal devices.
摘要:
A relay apparatus compresses an information amount of channel quality information notified from a plurality of terminal apparatuses to notify a control station apparatus, and thereby improves spectral efficiency. The relay apparatus 400, which is applied to a communication system in which a control station apparatus and a terminal apparatus perform wireless communications using a plurality of sub-channels and relays the communications between the control station apparatus and the terminal apparatus, has a receiving section 402 that receives channel quality information indicative of channel quality of sub-channels from the terminal apparatus, a compressing section 405 that compresses an information amount of the received channel quality information and that generates notification information to notify the control station apparatus, and a transmitting section 406 that transmits the generated notification information to the control station apparatus.
摘要:
Provided is a communication system that can allocate resources on an uplink for a CQI report, and can reduce the overhead of the CQI relay transmission from a relay station apparatus to a base station apparatus. To each mobile station apparatus (501, 502) that transmits CQI directly to a base station apparatus (500), resource blocks on a base station apparatus uplink to be used for the transmission of each CQI to the base station apparatus are allocated. To each mobile station apparatus (511 to 513, 521 to 524) that transmits CQI to the base station apparatus via each relay station apparatus (510, 520), resource blocks on a relay station apparatus uplink to be used for the transmission of each CQI to the relay station apparatus are allocated. Resource blocks on the base station apparatus uplink to be used for each relay station apparatus to relay-transmit to the base station apparatus the CQI received from the mobile station apparatus are allocated on the basis of the allocation result of the resource blocks on the relay station apparatus uplink for each relay station apparatus.
摘要:
A receiving antenna diversity effect is improved by equalizing the likelihood while exchanging the likelihood among a plurality of equalizers. A receiving apparatus (300) which receives radio signals using a plurality of antennas (301-1 to 301-M), comprises: pilot separation sections (304-1 to 304-M) separating a pilot signal and a received data signal from the radio signals; a channel estimation section (305) calculating a channel estimation value corresponding to each of the antennas (301-1 to 301-M) according to the pilot signal; and a reception processing section (306) performing signal detection for the received data signal corresponding to each of the antennas (301-1 to 301-M) and having a plurality of equalization sections each generating likelihood information according to the received data signal and the channel estimation value, wherein any one of the equalization sections generates likelihood information using the likelihood information generated by another equalization section and also outputs the generated likelihood information to another equalization section.