Structured channel rasters for unlicensed spectrum

A non-transitory computer-readable medium storing computer executable code for frequency scanning during wireless communication, comprising:

• code for identifying a first channel raster pattern determined from a set of carrier frequencies, the set of carrier frequencies including multiple subsets of carrier frequencies, each subset of the multiple subsets of carrier frequencies being centered around a carrier frequency in a second channel raster, the first channel raster pattern being used over an unlicensed spectrum for a wireless wide area network (WWAN), corresponding to a first channel raster for the WWAN, wherein the first channel raster pattern has a channel spacing for intra-band carrier aggregation and is aligned with the second channel raster, different from the first channel raster, being used over the unlicensed spectrum for a wireless local area network (WLAN), wherein alignment of the second channel raster occurs at a center frequency of at least one Evolved Universal Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN) of the first channel raster pattern in the unlicensed spectrum, and wherein each of the first channel raster and the second channel raster establish a respective integer multiple for frequency steps on the unlicensed spectrum;
• and
• code for performing the frequency scanning over the unlicensed spectrum for the WWAN using the first channel raster pattern.

An apparatus for frequency scanning during wireless communication, comprising:

• a transceiver;
• a memory configured to store data;
• and
• one or more processors communicatively coupled with the transceiver and the memory via at least one bus,
• wherein the one or more processors and the memory are configured to:
• identify a first channel raster pattern determined from a set of carrier frequencies, the set of carrier frequencies including multiple subsets of carrier frequencies, each subset of the multiple subsets of carrier frequencies being centered around a carrier frequency in a second channel raster, the first channel raster pattern being used over an unlicensed spectrum for a wireless wide area network (WWAN), corresponding to a first channel raster for the WWAN, wherein the first channel raster pattern has a channel spacing for intra-band carrier aggregation and is aligned with the second channel raster, different from the first channel raster, being used over the unlicensed spectrum for a wireless local area network (WLAN), wherein alignment of the second channel raster occurs at a center frequency of at least one Evolved Universal Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN) of the first channel raster pattern in the unlicensed spectrum, and wherein each of the first channel raster and the second channel raster establish a respective integer multiple for frequency steps on the unlicensed spectrum, and
• perform, via the transceiver, the frequency scanning over the unlicensed spectrum for the WWAN using the first channel raster pattern.