Abstract
The invention claims an automatic retransmitting request control system used for MIMO-OFDM communication system. In the system ACK/NACK output unit (320) of receiving device sends feedback information of affirmative responsion and negative responsion to sending device according to circulation redundancy checking result. Error data flow detecting unit (310) of sending device confirms data flow which needs to be retransmitted according to responded information. Retransmitting mode selecting unit (312) chooses retransmitting mode from following retransmitting modes: (a) use same wire to send data which is needed to be retransmitted and use wire which is not requested to retransmit to send new data mode; (b) use wire which is not requested to retransmit to send data which is needed to be retransmitted and using other wire to send new data mode; (c) use wire which is not requested to retransmit and using STBC to put up data retransmitting mode; and (d) use all workable wires and STBC to put up data retransmitting mode.
An automatic retransmission request control system in OFDM-MIMO communication system. In this system an ACK/NACK output part (320) of a receiver transmits to a transmitter a feedback information of positive or negative response based on the result of a cyclic redundancy check. An error data stream determination part (310) of the transmitter determines based on the feedback information a data stream that need be retransmitted and a retransmission mode selection part (312) selects a retransmission mode from among (a) a mode in which to transmit the data which are to be retransmitted via the same antenna as in the previous transmissionwhile transmitting at the same time new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data which are to be retransmitted via an antenna via which no retransmission is requested while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 15/03/2010 | ISLD-201004-003 | PANASONIC CORP |
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
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