Preamble design for wake-up signals

A method for wireless communication by a wireless communication device, comprising:

• receiving a packet from a second wireless communication device via a first radio, the packet including:
• a physical layer preamble including a first portion and a second portion, the first portion including one or more symbols, the second portion including two or more symbols, each of the one or more symbols in the first portion being modulated according to a binary phase shift keying (BPSK) modulation scheme, the first two symbols in the second portion immediately following the last symbol in the first portion being modulated according to a BPSK modulation scheme, and
• a physical layer payload including a plurality of symbols, the plurality of symbols in the payload being modulated according to a multicarrier on-off keying (MC-OOK) modulation scheme;
• and
• determining a packet type of the packet based at least in part on the modulation in the first portion and the modulation in the second portion.

A wireless communication device, comprising:

• at least one modem;
• at least one processor;
• and
• at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, causes the wireless communication device to:
• generate a physical layer preamble of a packet, the physical layer preamble including a first portion and a second portion, the first portion including one or more symbols, the second portion including two or more symbols;
• modulate each of the one or more symbols in the first portion according to a binary phase shift keying (BPSK) modulation scheme;
• modulate the first two symbols in the second portion immediately following the last symbol in the first portion according to a BPSK modulation scheme;
• generate a physical layer payload of the packet including a plurality of symbols;
• modulate the plurality of symbols in the payload according to a multicarrier on-off keying (MC-OOK) modulation scheme;
• and
• output the modulated packet for transmission to at least one wireless communication device.

A wireless communication device, comprising:

• a first low power radio and a second primary radio;
• at least one modem;
• at least one processor;
• and
• at least one memory communicatively coupled with the at least one processor and storing processor-readable code that, when executed by the at least one processor, causes the wireless communication device to:
• receive a packet from a second wireless communication device via the first radio, the packet including:
• a physical layer preamble including a first portion and a second portion, the first portion including one or more symbols, the second portion including two or more symbols, each of the one or more symbols in the first portion being modulated according to a binary phase shift keying (BPSK) modulation scheme, the first two symbols in the second portion immediately following the last symbol in the first portion being modulated according to a BPSK modulation scheme, and
• a physical layer payload including a plurality of symbols, the plurality of symbols in the payload being modulated according to a multicarrier on-off keying (MC-OOK) modulation scheme;
• and
• determine a packet type of the packet based at least in part on the modulation in the first portion and the modulation in the second portion.