DATA TRANSMISSION COEXISTENCE WITHIN TELEVISION WHITE SPACE CHANNELS

摘要

Methods, systems, and/or devices are provided that permit data transmissions over unused television channels. A method operational in a receiver device, includes monitoring one or more repurposed channels within a television broadcast frequency spectrum for data waveforms, wherein waveforms of different bandwidths coexist within the one or more repurposed channels, and at least a larger waveform has a first bandwidth larger than a channel bandwidth for each repurposed channel. The method also includes receiving a waveform over a repurposed channel from among the one or more repurposed channels, wherein the received waveform has a second bandwidth smaller than the channel bandwidth. The method further includes processing the received waveform by applying a downclocking factor to a clock of the receiver device that causes the receiver device to process the received waveform according to the second bandwidth to obtain a data payload from the received waveform.

主权项

1. A method comprising:
monitoring one or more repurposed channels of a plurality of repurposed channels within a television broadcast frequency spectrum for data waveforms, wherein each of the plurality of repurposed channels has a channel bandwidth, and wherein a first data waveform spans multiple repurposed channels of the plurality of repurposed channels; receiving a particular data waveform over a particular repurposed channel from among the one or more repurposed channels, wherein the particular data waveform has a second bandwidth smaller than the channel bandwidth of the particular repurposed channel, and wherein a first component of the particular data waveform and a first component of the first data waveform have a center frequency that matches a center frequency of the particular repurposed channel, wherein the first component of the particular data waveform is associated with a first portion of a first preamble of a data payload and the first component of the particular data waveform has a third bandwidth and is located within an overlapping frequency region between the particular data waveform and the first data waveform; wherein a second component of the particular data waveform is associated with a second portion of the first preamble and the second component of the particular data waveform has a fourth bandwidth; ascertaining a duration of the particular data waveform by monitoring for a signal identifier encoded within the first component of the particular data waveform; applying a downclocking factor to a clock of a receiver device to reduce a frequency of the clock based on the duration; and processing, by the receiver device, the particular data waveform to obtain the data payload, wherein processing the particular data waveform includes sampling the particular data waveform at a sampling rate based on the reduced frequency.