Emergency data transmission over unlicensed radio frequency spectrum band
摘要
說明書
At block 2310, the method 2300 may include transmitting, by the first base station, an indication to a second base station that the UE has emergency uplink data to transmit over the unlicensed radio frequency spectrum band. In some examples, the second base station may be an LTE/LTE-A-compatible base station. In some examples, the indication to the second base station may include a downlink signal and/or a transmission at a beginning of an LBT burst. The operation(s) at block 2310 may be performed using the wireless communication management module 1620 and/or the emergency data notification distribution module 1640 described with reference to
Depending on the uplink transmission from the UE indicating that the UE has emergency uplink data to transmit, and the indication transmitted from the first base station to the second base station indicating that the UE has emergency data to transmit, UEs associated with the first base station and the second base station may adjust their respective CCA opportunities accordingly. For example, if the first base station sets an uplink emergency indication in its own signal while the second based station does not (e.g., because the second base station and its UEs do not have emergency data to transmit), UEs associated with the first base station may override their default CCA opportunity and set their CCA opportunity to an earliest CCA opportunity if they have emergency data to transmit, while UEs associated with the second base station may yield their default CCA opportunity if it collides with the adjusted CCA opportunity of a UE associated with the first base station. Also, the UEs associated with second base station may relinquish their default CCA opportunity to the UEs associated with the first base station.
