Sounding reference signals with collisions in asymmetric carrier aggregation
摘要
說明書
There may be a switching time between receiving the uplink transmission from the UE on the second CC to receiving the SRS transmission from the UE in the uplink portion of the first CC or between transmitting the downlink transmission to the UE on the second CC and receiving of the SRS in the uplink portion of the first CC. The eNB may take the switching time into account when receiving uplink communication or SRS transmissions from the UE or when transmitting downlink communication to the UE. Thus, the performing by the eNB may be based on the switching time. The switching time may correspond to an interruption time.
At 1812, the eNB may transmit an instruction to the UE. The instruction may comprise at least one of an SRS configuration, an indication to restrict the subframes on which the UE should transmit a PUCCH to a subset of uplink subframes of the second CC, an indication to the UE regarding use of at least one prioritization rule to determine whether to transmit the SRS on the first CC, to transmit the uplink transmission on the second CC, or to receive the downlink transmission on the second CC, an indication to the UE regarding puncturing the uplink transmission on the second CC with the transmission of the SRS; or an indication regarding selecting one of a plurality of CCs to interrupt in order to transmit the SRS.
