Trigger frames adapted to packet-based policies in an 802.11 network
摘要
說明書
The PHY layer block 703 (here an 802.11 standardized PHY layer) has the task of formatting, modulating on or demodulating from any 20 MHz channel or the composite channel, and thus sending or receiving frames over the radio medium used 100, such as 802.11 frames, for instance medium access trigger frames TF 430 to reserve a transmission slot, MAC data and management frames based on a 20 MHz width to interact with legacy 802.11 stations, as well as of MAC data frames of OFDMA type having smaller width than 20 MHz legacy (typically 2 or 5 MHz) to/from that radio medium.
The PHY layer block 703 includes CCA capability to sense the idle or busy state of 20 Mhz channels and to report the result to the MAC 702 according to 802.11 standard. Upon detecting a signal with significant received signal strength, an indication of channel use is generated.
The MAC layer block or controller 702 preferably comprises a MAC 802.11 layer 704 implementing conventional 802.11ax MAC operations, and an additional block 705 for carrying out, at least partially, the invention. The MAC layer block 702 may optionally be implemented in software, which software is loaded into RAM 612 and executed by CPU 611.
Preferably, the additional block 705, referred to as the MU management module, implements the parts dedicated to implement all or part of the embodiments of the invention that regards node 600.
