TECHNIQUES FOR MANAGING TRANSMISSIONS OF REFERENCE SIGNALS

摘要

A network may use enhanced sounding reference signal (SRS) transmission techniques to support reference signal transmissions over shared spectrum. For example, a wireless device may receive an uplink grant and an indicator. The uplink grant may include an uplink resource allocation to the wireless device and the indicator may alert the device of a forthcoming reference signal transmission. The wireless device may use the uplink grant and the indicator to determine a reference signal transmission period relative to the resources assigned in the uplink grant. For example, the wireless device may determine that the reference signal transmission period is prior to, during, or subsequent to the uplink transmission period. In some cases, a wireless device may be aperiodically or periodically scheduled for reference signal transmissions.

主权项

1. A method of wireless communication, comprising:
identifying an uplink transmission time period associated with a shared radio frequency spectrum band; receiving an indicator in a downlink transmission associated with an uplink transmission of a reference signal; identifying a reference signal time period relative to the uplink transmission time period; and transmitting the reference signal over the shared radio frequency spectrum band during the identified reference signal time period.