Ultra-low latency PHY/MAC design for IEEE 802.11
Provided herein is ultra-low latency (ULL) PHY/MAC design for IEEE 802.11. The disclosure provides an apparatus, comprising: interface circuitry; and processor circuitry coupled with the interface circuitry, wherein the processor circuitry is to: encode a ULL packet; and cause transmission of the ULL packet to an Access Point (AP) via the interface circuitry in an unlicensed spectrum, wherein a duration of the ULL packet is less than 20 microseconds. Other embodiments may also be disclosed and claimed.
1. An apparatus, comprising:
interface circuitry; and
processor circuitry coupled with the interface circuitry,
wherein the processor circuitry is to:
encode an ultra-low latency (ULL) packet; and
cause transmission of the ULL packet to an Access Point (AP) via the interface circuitry in an unlicensed spectrum,
wherein a duration of the ULL packet is less than 20 microseconds, and
wherein an Orthogonal Frequency Division Multiplexing (OFDM) symbol duration for the ULL packet is less than 3.2 microseconds.
2. The apparatus of claim 1 , wherein the ULL packet excludes a legacy preamble of an Institute of Electrical and Electronic Engineers (IEEE) 802.11ax packet or a before-IEEE 802.11ax packet.
3. The apparatus of claim 1 , wherein the processor circuitry is to:
cause transmission of the ULL packet to the AP across a wide band.
4. The apparatus of claim 3 , wherein the wide band includes an 80 MHz or 160 MHz band.
5. The apparatus of claim 1 , wherein a subcarrier frequency spacing for the ULL packet is greater than 312.5 kHz.
6. The apparatus of claim 5 , wherein the subcarrier frequency spacing includes 1.25 MHz or 2.5 MHz.
7. The apparatus of claim 1 , wherein an Inverse Discrete Fourier Transformation (IDFT)/Discrete Fourier Transformation (DFT) period for the ULL packet includes 0.8 microseconds or 0.4 microseconds.
8. The apparatus of claim 1 , wherein a guard interval duration for the ULL packet includes 0.8 microseconds or 0.4 microseconds.
9. The apparatus of claim 1 , wherein the OFDM symbol duration includes 1.6 microseconds or 0.8 microseconds.
10. The apparatus of claim 1 , wherein a duration of a short-training field for the ULL packet is less than 4 microseconds.
11. The apparatus of claim 10 , wherein the duration of the short-training field includes 2 microseconds or 1 microsecond.
12. The apparatus of claim 1 , wherein a duration of a long-training field for the ULL packet is less than 4 microseconds.
13. The apparatus of claim 12 , wherein the duration of the long-training field includes 2.4 microseconds or 1.2 microsecond.
14. The apparatus of claim 1 , wherein a signal field for the ULL packet includes 2 Orthogonal Frequency Division Multiplexing (OFDM) symbols.
15. The apparatus of claim 1 , wherein a duration of a preamble of the ULL packet is less than a duration of a legacy preamble of an Institute of Electrical and Electronic Engineers (IEEE) 802.11ax packet or a before-IEEE 802.11ax packet.
16. The apparatus of claim 15 , wherein the duration of the preamble of the ULL packet includes 7.6 microseconds or 3.8 microsecond.
17. The apparatus of claim 1 , wherein the processor circuitry is to:
encode the ULL packet with dual-carrier modulation or quad-carrier modulation.
18. The apparatus of claim 1 , wherein the processor circuitry is to:
cause transmission of the ULL packet to the AP when there is an ongoing transmission from an Overlapping Basic Service Set (OBSS) network.
19. The apparatus of claim 1 , wherein the processor circuitry is to identify the ULL packet via:
a higher layer packet classification tag;
a Media Access Control (MAC) layer traffic flow identifier (ID); or
a dedicated traffic identifier (TID).
20. The apparatus of claim 1 , wherein the processor circuitry is to:
cause transmission of the ULL packet to the AP over 6 GHz band.
21. The apparatus of claim 1 , wherein the processor circuitry is to:
encode the ULL packet with 64 tones or 128 tones.
22. The apparatus of claim 1 , wherein a size of the ULL packet is equal to or less than a predefined packet size threshold.
23. The apparatus of claim 1 , wherein a duration of the ULL packet is equal to or less than a predefined packet duration threshold.