Systems and methods for uplink feedback for high-speed downlink packet access (HSPDA)

摘要

Systems and method for uplink feedback for multipoint transmission of high-speed downlink packet access (MP-HSDPA) that may improve downlink transmission efficiency and cell coverage. For example, Channel Quality Indicator (CQI) and/or Precoding Control Indicator (PCI) that may be calculated to accommodate the needs of coordinated dynamic network scheduling. Additionally, various frame structures may be generated for the uplink feedback that may carry multiple CQI and HARQ-ACK feedbacks from MP-HSDPA. The frame structures may also address asynchronous downlink transmissions between two cells. Moreover, HS-DPCCH power offset settings for both CQI and HARQ-ACK fields that may be modified and/or created to ensure reliable uplink feedback transmission.

主权项

1. A wireless transmit/receive unit (WTRU), the WTRU comprising:
a processor configured to:
determine a first time for a first sub-frame from a first cell;determine a second time for a second sub-frame from a second cell;calculate a time difference by subtracting the first time from the second timedetermine a timing relationship using the time difference and an allowance parameter for sending uplink feedback; andencode a first uplink feedback message for the first cell and a second uplink feedback message for the second cell into a composite feedback message when the time difference is within a range provided by the timing relationship.