Listen-before-talk (LBT) with new radio-spectrum sharing (NR-SS) discovery signal transmission

A wireless communication device comprising:

• a memory;
• a transceiver;
• and
• a processor in communication with the memory and the transceiver, the processor configured to:
• sense a channel in a spatial domain based on a plurality of expected beam transmission directions, wherein the channel is shared by a plurality of network operating entities including a first network operating entity associated with the wireless communication device, wherein the processor configured to sense the channel comprises the processor configured to, via the transceiver, sweep through multiple directional reception beams and listen to the channel in a direction of each of the multiple directional reception beams before a discovery period;
• transmit, via the transceiver and before the discovery period, a channel reservation signal using an omnidirectional transmission beam based on the sensing, the channel reservation signal to indicate a reservation for the channel in the discovery period;
• and
• transmit, via the transceiver, after sensing the channel, discovery signals in one or more of the plurality of expected beam transmission directions during the discovery period to facilitate synchronization in the channel.

A wireless communication device, comprising:

• means for sensing a channel in a spatial domain based on a plurality of expected beam transmission directions, wherein the channel is shared by a plurality of network operating entities including a first network operating entity associated with the wireless communication device, wherein the means for sensing includes means for sweeping through multiple directional reception beams and means for listening to the channel in a direction of each of the multiple directional reception beams before a discovery period;
• means for transmitting, before the discovery period, a channel reservation signal using an omnidirectional transmission beam based on the sensing, the channel reservation signal to indicate a reservation for the channel in the discovery period;
• and
• means for transmitting, after the sensing, discovery signals in one or more of the plurality of expected beam transmission directions during the discovery period to facilitate synchronization in the channel.

A non-transitory computer-readable medium storing code for wireless communication by a wireless communication device, the code comprising instructions stored thereon that, when executed by a processor of the wireless communication device, instruct the processor to:

• sense a channel in a spatial domain based on a plurality of expected beam transmission directions, wherein the channel is shared by a plurality of network operating entities including a first network operating entity associated with the wireless communication device, wherein the sensing includes sweeping through multiple directional reception beams and listening to the channel in a direction of each of the multiple directional reception beams before a discovery period;
• transmit a channel reservation signal before the discovery period using an omnidirectional transmission beam based on the sensing, the channel reservation signal to indicate a reservation for the channel in the discovery period;
• and
• transmit, after the sensing, discovery signals in one or more of the plurality of expected beam transmission directions during the discovery period to facilitate synchronization in the channel.