List of PPDUs Supported in 802.11aq
What is a PPDU in IEEE 802.11aq?
PPDU (Physical Protocol Data Unit) is the data packet format used at the PHY layer to transmit frames over the wireless medium.
How does the 802.11aq PPDU differ from 802.11ac or 802.11ax?
802.11aq PPDU incorporates enhancements for service discovery and signaling, adapting to new features while maintaining backward compatibility.
What are the main components of an 802.11aq PPDU?
It includes a preamble for synchronization, SIGNAL field for rate and length info, and the payload carrying MAC frames.
What is the role of the preamble in the PPDU?
The preamble enables receiver synchronization and channel estimation before decoding the data.
Does 802.11aq support OFDM modulation in its PPDU?
Yes, 802.11aq uses OFDM for robust and efficient data transmission in the 5 GHz band.
How does the SIGNAL field affect PPDU operation?
It indicates modulation and coding scheme, data rate, and length of the payload for proper decoding.
Are there new PPDU formats introduced specifically in 802.11aq?
802.11aq introduces extensions to support enhanced service discovery and pre-association signaling.
How does the PPDU in 802.11aq support service discovery?
It carries service discovery frames efficiently with minimal overhead, allowing quick detection by clients.
What modulation and coding schemes (MCS) does 802.11aq PPDU support?
It supports a range of MCS levels similar to 802.11ac/ax for flexible rate adaptation.
How does 802.11aq ensure backward compatibility in PPDU formats?
By adhering to common preamble structures and signaling fields used in earlier standards.
What is the significance of the Service field in the PPDU?
It carries control bits and information to facilitate decoding and error correction.
Are there any changes in the tail bits in 802.11aq PPDU?
Tail bits remain similar but may be optimized for improved error detection in new frame types.
How is channel coding handled in 802.11aq PPDU?
It uses convolutional or LDPC coding schemes depending on the modulation rate.
What is the maximum PPDU length supported in 802.11aq?
The maximum length is similar to 802.11ac/ax, supporting large payloads for high throughput.
How does 802.11aq PPDU handle interference and collisions?
Through clear channel assessment and acknowledgment frames at MAC layer, combined with robust PHY coding.
Can 802.11aq PPDU operate on both 5 GHz and 6 GHz bands?
Primarily designed for 5 GHz, but concepts may extend to other bands in newer amendments.
What is the impact of PPDU structure on power consumption in 802.11aq?
Efficient PPDU formats minimize airtime and enable quicker sleep cycles, conserving power.
How are acknowledgments handled in relation to PPDU transmissions?
After PPDU reception, ACK frames confirm successful delivery, helping manage retransmissions.
Where can I find detailed specifications of 802.11aq PPDU formats?
In the IEEE 802.11aq amendment documentation and related technical papers.
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