As discussed a UE 120 may receive signals transmitted by BS 110 on a DL. In order to determine parameters of a communication channel (e.g., on the DL) between UE 120 and BS 110, BS 110 may transmit one or more reference signals (RSs) to UE 120. The RS may be data that is known by both UE 120 and BS 110. Therefore, the UE 120 may compare the decoded received RS transmitted from BS 110, with the known RS to determine parameters of the communication channel in a process known as channel estimation. The channel estimation may be used to decode other data transmitted by the BS 110 to the UE 120 on the communication channel. For example, BS 110 may transmit a tracking reference signal (TRS) to UE 120. The UE 120 may utilize the TRS to perform one or more of time/frequency tracking, estimation of Doppler spread, estimation of delay spread, estimation of power delay profile, etc. of the channel between BS 110 and UE 120. In certain aspects, TRS is a device specific (e.g., UE-specific and transmitted on resources, such as resource blocks, allocated for a specific UE on the DL) RS and configured with higher-layer signaling (e.g., as part of a RRC signaling, media access control-control element (MAC-CE), downlink control information (DCI), etc.) in a device specific manner.

In certain aspects, the BS 110 is configured to transmit TRS periodically. For example, the BS 110 may transmit the TRS every Y number of slots (e.g., where Y is a positive integer). The BS 110 may further transmit the TRS over X number of slots (e.g., where X is a positive integer) for each transmission. Accordingly, the BS 110 may be configured to start transmission of TRS every Y number of slots and transmit TRS in X number of slots consecutively for each transmission, where X<Y.