Wireless base station apparatus and wireless communication method
AssigneeMitsubishi Electric Corporation
InventorKazuaki Ishioka
Life of this patent
Estimating the term…
Abstract
A wireless base station apparatus that communicates with a plurality of terminals via spatial multiplexing includes: an active array antenna to transmit a first transmit signal; sector antennas to transmit second transmit signals; and a digital signal processor that generates the first transmit signal that is transmitted from the active array antenna and generates the second transmit signals that are transmitted from the sector antennas, the second transmit signals being transmit signals for eliminating interference between the terminals generated by the first transmit signal.
Claims9
A wireless base station apparatus that communicates with a plurality of terminals via spatial multiplexing, the apparatus comprising:
- a two-dimensional array antenna to transmit a first transmit signal;
- a sector antenna to transmit a second transmit signal;
- and
- a digital signal processor to generate the first transmit signal that is transmitted from the two-dimensional array antenna, and generate the second transmit signal that is transmitted from the sector antenna, the second transmit signal being a transmit signal for eliminating interference between the terminals generated by the first transmit signal, wherein
- the digital signal processor generates the first transmit signal by performing precoding on a signal that is to be transmitted for each of the terminals, and
- the digital signal processor generates the second transmit signal by using:
- a signal obtained by performing the precoding on the signal that is to be transmitted for each of the terminals;
- and
- a control signal that is common to the plurality of terminals.
A wireless communication method in a wireless base station apparatus to communicate with a plurality of terminals via spatial multiplexing, the method comprising:
- generating a first transmit signal that is transmitted from a two-dimensional array antenna;
- generating a second transmit signal that is a transmit signal for eliminating interference between the terminals generated by the first transmit signal, the second transmit signal being transmitted from a sector antenna;
- transmitting the first transmit signal;
- and
- transmitting the second transmit signal, wherein
- generating the first transmit signal includes generating the first transmit signal by performing precoding on a signal that is to be transmitted for each of the terminals, and
- generating the second transmit signal includes generating the second transmit signal by using:
- a signal obtained by performing the precoding on the signal that is to be transmitted for each of the terminals;
- and
- a control signal that is common to the plurality of terminals.
A non-transitory storage medium of a wireless base station apparatus that communicates with a plurality of terminals via spatial multiplexing, the apparatus comprising a two-dimensional array antenna to transmit a first transmit signal, and a sector antenna to transmit a second transmit signal, the storage medium storing a program which when executed by a processor performs processes of:
- generating the first transmit signal that is transmitted from the two-dimensional array antenna;
- and
- generating the second transmit signal that is transmitted from the sector antenna, the second transmit signal being a transmit signal for eliminating interference between the terminals generated by the first transmit signal, wherein
- the program executed by the processor performs a process of generating the first transmit signal by performing precoding on a signal that is to be transmitted for each of the terminals, and
- the program executed by the processor performs a process of generating the second transmit signal by using:
- a signal obtained by performing the precoding on the signal that is to be transmitted for each of the terminals;
- and
- a control signal that is common to the plurality of terminals.
A control circuit of a wireless base station apparatus that communicates with a plurality of terminals via spatial multiplexing, the apparatus comprising a two-dimensional array antenna to transmit a first transmit signal, and a sector antenna to transmit a second transmit signal,
- the control circuit generating the first transmit signal that is transmitted from the two-dimensional array antenna, the control circuit generating the second transmit signal that is transmitted from the sector antenna, the second transmit signal being a transmit signal for eliminating interference between the terminals generated by the first transmit signal, wherein
- the control circuit generates the first transmit signal by performing precoding on a signal that is to be transmitted for each of the terminals, and
- the control circuit generates the second transmit signal by using:
- a signal obtained by performing the precoding on the signal that is to be transmitted for each of the terminals;
- and
- a control signal that is common to the plurality of terminals.
Dependencies are inferred from the claim text.