Scaling transmit power in multi-antenna wireless systems
AssigneeNokia Solutions and Networks Oy
InventorsJing Xiu Liu, Jian Feng Kang
Life of this patent
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Abstract
There is provided a network component of a wireless communication network. The network component includes at least two output ports, each output port being associated with an antenna. The network component further includes a controller for providing a power signal set having at least two power signal components, each power signal component being associated with one of at least two output ports and being indicative of a power portion to be provided to its associated antenna for generating a transmission to a receiving network component of the wireless communication network. Further, the network component includes a power adjustment unit for scaling power signal components of the power signal set, thereby providing a scaled power signal set.
Claims22
A transmitting device comprising:
- at least two output ports, each output port being associated with an antenna;
- at least one data processor configured with instructions stored on a computer-readable memory to provide a power signal set having at least two power signal components, each power signal component being associated with one of the at least two output ports and being indicative of a power portion to be provided to its associated antenna for generating a wireless transmission to a receiving device;
- and
- a power adjustment unit for scaling the power signal components of the power signal set, thereby providing a scaled power signal set;
- wherein each of the power signal components corresponds to a communication channel between the transmitting device and the receiving device, and
- the power adjustment unit is configured to scale the power signal set depending on a channel state of the communication channels corresponding to the power signal components of the power signal set.
A method comprising:
- receiving a power signal set having at least two power signal components, each power signal component being associated with one of at least two antennas of an access node of a wireless communication network, each power signal component being further indicative of a power portion to be provided to its associated antenna for generating a transmission-to a user equipment;
- and
- scaling the power signal components of the power signal set, thereby providing a scaled power signal set;
- wherein the power signal set is associated with a frequency subband and the frequency subband is associated with the user equipment communicating with the access node.
A computer readable memory storing a computer program of instructions, which when executed by at least one data processor, cause a transmitting device to:
- provide a power signal set having at least two power signal components, each power signal component being associated with one of at least two output ports of the transmitting device and being indicative of a power portion to be provided to a respective antenna of the transmitting device for generating a wireless transmission to a receiving device, each respective antenna associated with one of the output ports;
- and
- scale the power signal components of the power signal set, thereby providing a scaled power signal set;
- wherein each of the power signal components corresponds to a communication channel between the transmitting device and the receiving device, and
- the power signal set is scaled in dependence on a channel state of the communication channels corresponding to the power signal components of the power signal set.
A transmitting device comprising:
- at least two output ports, each output port being associated with an antenna;
- at least one data processor configured with instructions stored on a computer-readable memory to provide a power signal set having at least two power signal components, each power signal component being associated with one of the at least two output ports and being indicative of a power portion to be provided to its associated antenna for generating a wireless transmission to a receiving device;
- a power adjustment unit configured to scale the power signal components of the power signal set so as to maintain output power at each of the at least two output ports below a threshold, thereby providing a scaled power signal set;
- and
- an amplifier assembly configured to generate the output power at each of the at least two output ports depending on the power signal component of the scaled power signal set.
Dependencies are inferred from the claim text.