Waveform coding with modulation for single-user and multiple-user transmissions
A wireless transmit/receive unit (WTRU) may be configured to perform wake up radio (WUR) for one or more WUR receivers. For example, the WTRU may transmit a common preamble to a first WUR receiver using a first frequency range. The WTRU may transmit a first WUR packet to the WUR receiver, after the common preamble. The WTRU may transmit the common preamble to a second WUR receiver using a second frequency range. The WTRU may transmit a second WUR packet after the common preamble, The bandwidth associated with the second WUR packet and the bandwidth associated with the first WUR packet may be smaller than the bandwidth associated with the common preamble, which may avoid interference from other transmitters {e.g., 802.11 transmitters, 802.11 stations, and 802.11 radios). The bandwidth associated with the first WUR packet and the bandwidth associated with the second WUR packet may not be coextensive with one another.
1. A transmit device comprising:
a transmitter configured to transmit a common preamble using a first frequency range;
the transmitter configured to transmit a first wake up radio (WUR) packet to a first WUR receiver after the common preamble, using the first frequency range, wherein a bandwidth associated with the first WUR packet is smaller than a bandwidth associated with the common preamble;
the transmitter configured to transmit the common preamble using a second frequency range; and
the transmitter configured to transmit a second WUR packet to a second WUR receiver after the common preamble, using the second frequency range, wherein a bandwidth associated with the second WUR packet is smaller than a bandwidth associated with the common preamble, and wherein a frequency range associated with the second WUR packet is different than a frequency range associated with the first WUR packet.
2. The transmit device of claim 1 , wherein the transmitter is configured to transmit a quadrature amplitude modulation (QAM) symbol, after the common preamble, wherein the QAM symbol is frequency division multiplexed with the first WUR packet.
3. The transmit device of claim 1 , wherein the common preamble protects WUR packets from interference caused by other transmit devices.
4. The transmit device of claim 1 , wherein the first WUR packet comprises an 802.11ba preamble and WUR information.
5. The transmit device of claim 1 , wherein a WUR signal associated with the first WUR packet is generated via a sequence, wherein the sequence is mapped to a set of subcarriers associated with an orthogonal frequency division multiplexed (OFDM) symbol.
6. The transmit device of claim 1 , wherein a portion of the first frequency range used to transmit the first WUR packet is centered within the first frequency range.
7. A method comprising:
transmitting a common preamble using a first frequency range;
transmitting a first wake up radio (WUR) packet to a first WUR receiver after the common preamble, using the first frequency range, wherein a bandwidth associated with the first WUR packet is smaller than a bandwidth associated with the common preamble;
transmitting the common preamble using a second frequency range; and
transmitting a second WUR packet to a second WUR receiver after the common preamble, using the second frequency range, wherein a bandwidth associated with the second WUR packet is smaller than a bandwidth associated with the common preamble, and wherein a frequency range associated with the second WUR packet is different than a frequency range associated with the first WUR packet.
8. The method of claim 7 , further comprising transmitting a quadrature amplitude modulation (QAM) symbol, after the common preamble, wherein the QAM symbol is frequency division multiplexed with the first WUR packet.
9. The method of claim 7 , wherein the common preamble protects WUR packets from interference caused by other transmit devices.
10. The method of claim 7 , wherein the first WUR packet comprises an 802.11ba preamble and WUR information.
11. The method of claim 7 , wherein a WUR signal associated with the first WUR packet is generated via a sequence, wherein the sequence is mapped to a set of subcarriers associated with an orthogonal frequency division multiplexed (OFDM) symbol.
12. The method of claim 7 , wherein a portion of the first frequency range used to transmit the first WUR packet is centered within the first frequency range.