Method and system for wireless local area network (WLAN) long symbol duration migration
A STA may perform packet detection to detect a packet and decode a legacy preamble of the detected packet including a legacy short training field (L-STF), a legacy long training field (L-LTF), and a legacy signal (L-SIG) field. The STA may decode a high efficiency signal A (HE-SIG-A) field to obtain a first partial association identifier (PAID) comprising group information. If the decoded group information matches group information stored in a memory of the STA, the STA may decode a high efficiency (HE) preamble and a high efficiency signal B (HE-SIG-B) field of the detected packet. The HE-SIG-B field may include a station identifier within the group. When the group information is combined with the station identifier, the STA may determine an accurate address.
1. A method for supporting early detection of a frame by a station (STA), the method comprising:
receiving, in a high efficiency signal A (HE-SIG-A) field of the frame, an indication of transmission opportunity (TXOP) duration and an indication of a modulation and coding scheme (MCS) of a high efficiency signal B (HE-SIG-B) field of the frame;
decoding the HE-SIG-B field based on the indicated MCS, wherein the HE-SIG-B field comprises a common field and a field indicative of a STA identifier; and
on a condition the field indicative of the STA identifier of the HE-SIG-B field matches an identifier of the STA, decoding a payload of the frame.
2. The method of claim 1 , wherein the MCS of the HE-SIG-B field is higher than an MCS of the HE-SIG-A field.
3. The method of claim 1 , wherein the MCS of the HE-SIG-B field is the same as an MCS of the received HE-SIG-A field.
4. The method of claim 1 , wherein the MCS of the HE-SIG-B field is lower than an MCS of the HE-SIG-A field.
5. The method of claim 1 , wherein the HE-SIG-B field includes an information field, wherein the information field comprises information corresponding to a plurality of encoders.
6. The method of claim 5 , wherein at least one of the plurality of encoders corresponds to a decoder of the STA.
7. The method of claim 1 , wherein the STA is a non access point (non-AP) STA configured for multi user multiple-input multiple-output (MU-MIMO) wireless communication.
8. The method of claim 1 , wherein the frame is a high efficiency (HE) physical (PHY) layer convergence procedure (PLCP) protocol data unit (PPDU).
9. A station (STA) configured to support early detection of a frame, the STA comprising:
a receiver configured to receive, in a high efficiency signal A (HE-SIG-A) field of the frame, an indication of transmission opportunity (TXOP) duration and an indication of a modulation and coding scheme (MCS) of a high efficiency signal B (HE-SIG-B) field of the frame;
a decoder configured to decode the HE-SIG-B field based on the indicated MCS, wherein the HE-SIG-B field comprises a common field and a field indicative of a STA identifier; and
the decoder further configured to decode, on a condition the field indicative of the STA identifier of the HE-SIG-B field matches an identifier of the STA, a payload of the frame.
10. The STA of claim 9 , wherein the MCS of the HE-SIG-B field is higher than an MCS of the HE-SIG-A field.
11. The STA of claim 9 , wherein the MCS of the HE-SIG-B field is the same as an MCS of the received HE-SIG-A field.
12. The STA of claim 9 , wherein the MCS of the HE-SIG-B field is lower than an MCS of the HE-SIG-A field.
13. The STA of claim 9 , wherein the HE-SIG-B field includes an information field, wherein the information field comprises information corresponding to a plurality of encoders.
14. The STA of claim 13 , wherein at least one of the plurality of encoders corresponds to a decoder of the STA.
15. The STA of claim 9 , wherein the STA is a non access point (non-AP) STA configured for multi user multiple-input multiple-output (MU-MIMO) wireless communication.
16. The STA of claim 9 , wherein the frame is a high efficiency (HE) physical (PHY) layer convergence procedure (PLCP) protocol data unit (PPDU).
17. A method performed by an access point (AP), the method comprising:
transmitting a frame, from the AP to a station (STA), wherein the frame comprises a high efficiency signal A (HE-SIG-A) field and a high efficiency signal B (HE-SIG-B) field;
wherein the HE-SIG-A field comprises an indication of a transmission opportunity (TXOP) duration and an indication of a modulation and coding scheme (MCS) of a high efficiency signal B (HE-SIG-B) field of the frame;
wherein the HE-SIG-B field is modulated and coded according to the MCS and comprises a common field and a field indicative of an identifier of the STA;
wherein the frame includes a payload for the STA to decode when the field indicative of the identifier of the STA of the HE-SIG-B field matches an identifier of the STA.
18. The method of claim 17 , wherein the MCS of the HE-SIG-B field is higher than an MCS of the HE-SIG-A field.
19. The method of claim 17 , wherein the MCS of the HE-SIG-B field is the same as an MCS of the HE-SIG-A field.
20. The method of claim 17 , wherein the MCS of the HE-SIG-B field is lower than an MCS of the HE-SIG-A field.