Method and apparatus for transmitting control signaling for MIMO transmission
First Claim
1. A method for processing multi-user multiple-input multiple-output (MU-MIMO) transmission associated with one wireless transmit/receive unit (WTRU) of a plurality of WTRUs that are assignable to a same resource, the method comprising:
- receiving, by the one WTRU, downlink control information and MIMO data specific to the one WTRU, the downlink control information including a first indicator indicating information specific to the one WTRU and a second indicator indicating information common to the plurality of WTRUs assignable to the same resource; and
processing, by the one WTRU, the MIMO data specific to the one WTRU based on the downlink control information,wherein the downlink control information indicates a number of layers associated with the MIMO data.
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Abstract
A method and apparatus for processing multiple-input multiple-output (MIMO) transmission are disclosed. A wireless transmit/receive unit (WTRU) receives downlink control information including WTRU-specific MIMO and transport format information and MIMO information for all other WTRUs assigned to the same resource. The WTRU processes received MIMO data based on the downlink control information. The downlink control information may also include transport format information for all other WTRUs assigned to the same RB. The downlink control information may be transmitted via WTRU-specific control signaling. All WTRUs'"'"' MIMO and/or transport format information may be transmitted via resource-specific common control signaling. The downlink control signaling format may include at least one of a number of streams for the WTRU, a number of active WTRUs assigned to the same resource, a spatial channel identity for the WTRU, a MIMO mode, a precoding matrix index and a precoding vector index.
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Citations
20 Claims
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1. A method for processing multi-user multiple-input multiple-output (MU-MIMO) transmission associated with one wireless transmit/receive unit (WTRU) of a plurality of WTRUs that are assignable to a same resource, the method comprising:
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receiving, by the one WTRU, downlink control information and MIMO data specific to the one WTRU, the downlink control information including a first indicator indicating information specific to the one WTRU and a second indicator indicating information common to the plurality of WTRUs assignable to the same resource; and processing, by the one WTRU, the MIMO data specific to the one WTRU based on the downlink control information, wherein the downlink control information indicates a number of layers associated with the MIMO data. - View Dependent Claims (2, 3, 4)
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5. A wireless transmit/receive unit (WTRU) for processing multi-user multiple-input multiple-output (MU-MIMO) transmission associated with a plurality of WTRUs including the WTRU that are assignable to a same resource, the WTRU comprising:
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a receiver for receiving downlink control information and MIMO data specific to the one WTRU, the downlink control information including a first indicator indicating information specific to the WTRU, and a second indicator indicating information common to the plurality of WTRUs assignable to the same resource; and a processor for processing the MIMO data specific to the WTRU based on the downlink control information, wherein the processor decodes the downlink control information indicating a number of layers associated with the MIMO data. - View Dependent Claims (6, 7, 8)
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9. A method for processing multi-user multiple-input multiple-output (MU-MIMO) transmission associated with one wireless transmit/receive unit (WTRU) of a plurality of WTRUs that are assignable to a same resource, the method comprising:
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receiving downlink control information and MIMO data specific to the one WTRU, the downlink control information including an indicator that indicates information for processing the MIMO data specific to the one WTRU, exclusive of MIMO data of any other WTRU assignable to the same resource; and processing the MIMO data specific to the one WTRU based on the downlink control information, wherein the downlink control information indicates a number of layers associated with the MIMO data. - View Dependent Claims (10, 11, 12)
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13. A wireless transmit/receive unit (WTRU) for processing multi-user multiple-input multiple-output (MU-MIMO) transmission associated with a plurality of WTRUs including the WTRU that are assignable to a same resource, the WTRU comprising:
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a receiver for receiving downlink control information and MIMO data specific to the WTRU, the downlink control information including an indicator that indicates information for processing the MIMO data specific to the WTRU, exclusive of MIMO data of any other WTRU assignable to the same resource; and a processor for processing the MIMO data specific to the WTRU based on the downlink control information, wherein the processor decodes the downlink control information indicating a number of layers associated with the MIMO data. - View Dependent Claims (14, 15, 16)
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17. An access point (AP) for supporting multi-user multiple-input multiple-output (MU-MIMO) transmission, the AP comprising:
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a controller configured to generate downlink control information and MIMO data specific to a first WTRU, the downlink control information including a first indicator indicating information specific to the first WTRU and a second indicator indicating information common to a plurality of WTRUs including the first WTRU that are assignable to the same resource; and a transmitter configured to transmit the downlink control information and the MIMO data specific to the first WTRU, wherein the downlink control information indicates a number of layers associated with the MIMO data. - View Dependent Claims (18, 19, 20)
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Specification