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:
To generate notification information for improving accuracy of channel quality information reconstructed based on a difference in notifying using the difference in channel quality information between channels. A notification information generating apparatus 400 has a notification information table 401 that stores a plurality of difference-value candidate values each indicating a difference between two pieces of channel quality information as candidate values for the notification information, a reconstructing section 403 that generates a reconstruction value using the notification information generated based on the channel quality information of a first channel, and a selecting section 402 which receives the channel quality information of a second channel differing from the first channel, selects a single candidate value from the candidate values for the notification information based on the channel quality information of the second channel and the reconstruction value, and generates the notification information based on the selected candidate value.
摘要:
To perform scheduling for improving throughput, while suppressing control information amounts notified from communication terminal apparatuses. A communication terminal apparatus (200) that is provided with a receiving section (220) that receives a control signal from the communication control apparatus, a reception quality measuring section (250) that measures reception quality of each of the channels, a reception quality information generating section (260) which selects part of channels as selection channels from the plurality of channels, and generates reception quality information to notify the communication-destination apparatus of selection channel information for identifying selected selection channels and reception quality measurement results in the selected selection channels, and a transmitting section (290) that transmits the generated reception quality information to the communication control apparatus, wherein the receiving section (220) receives a data signal assigned to at least one channel contained in the selection channels from the communication control apparatus (100).
摘要:
Reception quality measurement results of respective channels which have been outputted from a reception quality measuring section 308 are inputted to a selected channel determining section 341 and a channel quality information generating section 342. The number of selected channels M which has been previously defined or the number of selected channels M which has been outputted from a control information obtaining section 314 is inputted to the selected channel determining section 341 and a channel identification information generating section 343. The channel identification information generating section 343 selects one of a first representation format for representation with M channel numbers indicating the respective selected channels, and a second representation format for representation representing whether or not each of all the channels is included in the selected channels, based on the number of selected channels M, and uses the selected representation format to generate and output channel identification information.
摘要:
A wireless communication device of the present invention receives a signal on a channel that another wireless communication device allocates to the wireless communication device from a plurality of channels. The wireless communication device includes: an update channel selector that selects a plurality of request channels that are candidates to be allocated to the wireless communication device from the channels, calculates a difference between a group of the request channels and a group of predetermined channels, and generates difference information indicative of the difference; and a multiplexer that multiplexes the difference information to a signal to be transmitted to the other wireless communication device.
摘要:
ObjectTo reduce deterioration of transmission quality under circumstances where the moving speed is high.Overcoming MeansAn adaptive modulation control apparatus for adaptively selecting a modulation parameter from among a plurality of modulation parameters determined based on a plurality of modulation schemes, coding rates of error correction or a combination thereof corresponding to a propagation path state is provided with a reception state measuring section (2) that measures a reception state of a signal received from a communicating apparatus, a correcting section (3) that makes a correction to change propagation path information indicative of a measurement result of the propagation path state based on the measured reception state, and a modulation parameter selecting section (4) that selects a modulation parameter corresponding to the corrected propagation path information.
摘要:
To perform scheduling for improving throughput, while suppressing control information amounts notified from communication terminal apparatuses. A communication terminal apparatus (200) that is provided with a receiving section (220) that receives a control signal from the communication control apparatus, a reception quality measuring section (250) that measures reception quality of each of the channels, a reception quality information generating section (260) which selects part of channels as selection channels from the plurality of channels, and generates reception quality information to notify the communication-destination apparatus of selection channel information for identifying selected selection channels and reception quality measurement results in the selected selection channels, and a transmitting section (290) that transmits the generated reception quality information to the communication control apparatus, wherein the receiving section (220) receives a data signal assigned to at least one channel contained in the selection channels from the communication control apparatus (100).
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.