Wireless base station device, terminal, and wireless communication method
AssigneePanasonic Corporation
InventorsTakaaki Kishigami, Hidekuni Yomo
Life of this patent
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Abstract
A wireless base station device includes a plurality of transmit weight generation sections and a beam selection section. The transmit weight generation sections generate pieces of transmit weight information used for spatial division multiplexing transmission according to different algorithms. The pieces of transmit weight information are generated based on channel information on a plurality of terminals each having one or more antennas with which the wireless base station device performs spatial division multiplexing transmission. The beam selection section selects one of the pieces of transmit weight information generated.
Claims9
A terminal comprising:
- a channel estimation section configured to receive a plurality of spatially-multiplexed transmitted signals and to perform channel estimation by comparing a known signal sequence with a signal sequence provided in each of the spatially-multiplexed transmitted signals;
- and
- a spatial division demultiplexing section generating a reception weight based on the channel estimation to separate a desired signal from data signals of a spatial division multiplexing signal and to output the desired signal.
A terminal comprising:
- a channel estimation section performing channel estimation based on a known signal sequence provided for each spatially-multiplexed transmitted signal;
- a spatial division demultiplexing section generating a reception weight to separate a desired signal from a spatial division multiplexing signal and to output the desired signal;
- a spatial division demultiplexing algorithm storage section storing spatial division demultiplexing algorithm information used to separate the desired signal from the spatial division multiplexing signal;
- and
- a transmission section notifying the spatial division demultiplexing algorithm information to a wireless base station device.
A terminal comprising:
- a channel estimation section performing channel estimation based on a known signal sequence provided for each spatially-multiplexed transmitted signal;
- a spatial division demultiplexing section generating a reception weight to separate a desired signal from a spatial division multiplexing signal and to output the desired signal;
- an other-cell interference detection section detecting a condition of interference caused by other cells;
- a spatial division multiplexing transmission decision section deciding whether spatial division multiplexing transmission can be performed or not based on a detection value detected by the other-cell interference detection section;
- and
- a transmission section notifying the determination as to whether spatial division multiplexing transmission can be performed or not to a wireless base station device.
A terminal comprising:
- a channel estimation section performing channel estimation based on a known signal sequence provided for each spatially-multiplexed transmitted signal;
- a spatial division demultiplexing section generating a reception weight to separate a desired signal from a spatial division multiplexing signal and to output the desired signal;
- an other-cell interference detection section detecting a condition of interference caused by other cells;
- a spatial division multiplexing transmission decision section deciding whether spatial division multiplexing transmission can be performed or not based on a detection value detected by the other-cell interference detection section;
- and
- a transmission section notifying the determination as to whether spatial division multiplexing transmission can be performed or not to a wireless base station device;
- wherein when the detection value detected by the other-cell interference detection section exceeds a predetermined value, the spatial division multiplexing transmission decision section decides that the spatial division multiplexing transmission has been inhibited and notifies the decision to the wireless base station device.
Dependencies are inferred from the claim text.