Reducing periodic reporting in discontinuous receive (DRX) mode

摘要

Techniques for avoiding or reducing unnecessary CSI and/or SRS transmissions in a wireless communications system. In an example method, a user terminal periodically transmits (620) CSI and/or SRS according to corresponding periodic CSI transmission opportunities or periodic SRS transmission opportunities, or both, during a first period in which the UE is operating according to a short DRX cycle. In a second period immediately following the first period and during which the user terminal is operating according to a long DRX cycle, the user terminal reduces or suppresses (630) periodic transmissions of CSI and/or SRS. This may be done, for example, by suppressing periodic transmission of CSI and/or SRS, after a first delay time or first delay times or by reducing the rate of transmission of CSI and/or SRS, after a second delay time or second delay times. A combination of these and other disclosed approaches may be used.

主权项

1. A method, in a user terminal, for transmitting channel state information (CSI) or sounding reference signals (SRS) or both, the method comprising:
periodically transmitting CSI or SRS, or both, according to corresponding periodic CSI transmission opportunities or periodic SRS transmission opportunities, or both, during a first period in which the user terminal is operating according to a short discontinuous receive (DRX) cycle; and in a second period immediately following the first period and during which the user terminal is operating according to a long DRX cycle, reducing or suppressing periodic transmissions of CSI or SRS or both, the reducing or suppressing beginning at a specified time X determined based on a number of times the user terminal is in an Active Time state after entering the long DRX cycle.