| 摘要 |
A wireless seismic survey (220) system is structured as a hierarchy of cell (225) network layers, each higher level cell network layer (15) covering a bigger area than a lower level cell network layer (20) and receiving data from the lower level cell network layer. This hierarchical structure functions to concentrate collected data to a level that can be communicated to a central collection point, either through wireless, cable or other media. By defining cells to cover predetermined areas, transmission frequencies and/or transmission time slots or codes can be reused by cells sufficiently spaced apart to avoid co-channel interference, thereby increasing the amount of usable bandwidth.
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