MULTI-CHANNEL DATA TRANSMISSION STATION FOR TRANSMITTING MULTI-CHANNEL PROTOCOL DATA UNITS (PPDU) AND METHODS OF REDUCING COLLISIONS ON SECONDARY CHANNELS IN MULTI-CHANNEL WIRELESS DATA TRANSMISSION NETWORKS

摘要

FIELD: radio engineering, communication.;SUBSTANCE: disclosed is a data transmission station, comprising: a transceiver for transmitting data on a primary 20 MHz channel and up to three or more secondary channels including a secondary 20 MHz channel, a secondary 40 MHz channel and a secondary 80 M Hz channel for operating channel widths of 20 MHz, 40 MHz, 80 MHz and 160 MHz and to perform channel assessment in accordance with an energy detection (ED) technique; and a processing circuit, wherein as part of the ED technique, the processing circuit configures the transceiver to: issue a primary channel busy condition when the beginning of a 20 MHz data unit is detected in the primary 20 MHz channel at or above a first predetermined energy level; and issue a secondary channel busy condition when a primary channel busy condition has not been issued and when: any signal is detected within the secondary 20 MHz channel at or above a second predetermined energy level; or a 20 MHz data unit is detected in the secondary 20 MHz channel or a 20 MHz sub-channel of either the secondary 40 MHz channel or the secondary 80 MHz channel at or above a third predetermined energy level.;EFFECT: enabling detection of transmission of other wireless networks on secondary channels in order to reduce the probability of collision.;15 cl, 6 dwg