Method for signaling mu-mimo parameters
AssigneeInterDigital Patent Holdings, Inc.
InventorsKyle Jung-Lin Pan, Guodong Zhang, Donald M. Grieco, Philip J. Pietraski
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Abstract
Methods for signaling multi-user multiple-input multiple output (MU-MIMO) parameters for Evolved-UTRA (E-UTRA) are disclosed. Example signaling format methods are presented that allow use of distributed virtual resource blocks (DVRB) or support of four wireless transmit/receive units (WTRUs) but maintaining a predetermined signal format size. A signaling format is also presented that signals transmission precoding matrix indexes used by all co-scheduled WTRUs.
Claims20
A method for signaling multi-user multiple-input multiple-output (MU-MIMO) transmission parameters, the method comprising:
- receiving a downlink control information message with a distributed virtual resource block flag and a power share bit conveying the transmission parameters on a condition of a two transmitting antenna configuration;
- and,
- receiving a downlink control information message with two power share bits conveying the transmission parameters on a condition of a four transmitting antenna configuration.
A method for signaling multi-user multiple-input multiple-output (MU-MIMO) transmission parameters, the method comprising:
- receiving a downlink control information message with a distributed virtual resource block flag and a power share bit conveying the transmission parameters on a condition of a two transmitting antenna configuration;
- and,
- receiving one of a first downlink control information message with two power share bits conveying the transmission parameters on a condition of a four transmitting antenna configuration or a second downlink control information message with a distributed virtual resource block flag and a power share bit conveying the transmission parameters on a condition of a four transmitting antenna configuration, wherein the first downlink control information message or second downlink control information message is predetermined.
A method for signaling multi-user multiple-input multiple-output (MU-MIMO) transmission parameters, the method comprising:
- receiving a downlink control information message with two transmission precoding matrix index bits and a power share bit conveying the transmission parameters on a condition of a two transmitting antenna configuration;
- and,
- receiving a downlink control information message with six transmission precoding matrix index bits conveying the transmission parameters on a condition of a four transmitting antenna configuration.
A wireless transmit/receive unit for receiving multi-user multiple-input multiple-output (MU-MIMO) transmission parameters, comprising:
- a receiver configured to receive a downlink control information message with a distributed virtual resource block flag and a power share bit conveying the transmission parameters on a condition of a two transmitting antenna configuration;
- and,
- the receiver receiving a downlink control information message with two power share bits conveying the transmission parameters on a condition of a four transmitting antenna configuration.
Dependencies are inferred from the claim text.