Synchronization signal block signaling for wireless communications in shared spectrum

A method for wireless communications, comprising:

• monitoring, by a user equipment (UE), a shared radio frequency spectrum band during a measurement window for a synchronization signal (SS) burst;
• receiving from a base station a beam sweeping first transmission over the shared radio frequency spectrum band, the first transmission comprising an SS block of the SS burst;
• wherein one of the first transmission, a second transmission received from the base station, or a combination thereof comprises:
• a first indication of a time of access to the shared radio frequency spectrum band with respect to the measurement window, a second indication of a transmission beam associated with the SS block, and a third indication of a quantity of remaining SS blocks from the plurality of SS blocks to follow the SS block in the measurement window;
• and
• performing a synchronization procedure with the base station based at least in part on the received first SS block.

An apparatus for wireless communications, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory, wherein the instructions are executable by the processor to:
• perform an access procedure to obtain access to a shared radio frequency spectrum band during a measurement window;
• generate a synchronization signal (SS) burst comprising a plurality of SS blocks;
• and
• perform a beam sweeping first transmission of the SS burst over the shared radio frequency spectrum based at least in part on the access procedure, wherein each SS block of the SS burst is transmitted during the first transmission using a different transmission beam;
• wherein one of the first transmission, a second transmission, or a combination thereof comprises:
• a first indication of a time of access to the shared radio frequency spectrum band with respect to the measurement window, a second indication of a transmission beam associated with the SS block, and a third indication of a quantity of remaining SS blocks from the plurality of SS blocks to follow the SS block in the measurement window.

An apparatus for wireless communications, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory, wherein the instructions are executable by the processor to:
• monitor, a shared radio frequency spectrum band during a measurement window for a synchronization signal (SS) burst;
• receive from a base station a beam sweeping first transmission over the shared radio frequency spectrum band, the first transmission comprising an SS block of the SS burst;
• wherein one of the first transmission, a second transmission received from the base station, or a combination thereof comprises:
• a first indication of a time of access to the shared radio frequency spectrum band with respect to the measurement window, a second indication of a transmission beam associated with the SS block, and a third indication of a quantity of remaining SS blocks from the plurality of SS blocks to follow the SS block in the measurement window;
• and
• perform a synchronization procedure with the base station based at least in part on the received first SS block.