Overlapping basic service set (OBSS) indication in a high-efficiency wireless local-area network (HEW)
View Patent ↗An apparatus, computer readable medium, and method for overlapping basic service set (OBSS) indication in a high-efficiency wireless local-area network (HEW). An apparatus of a high-efficiency wireless local-area network device is disclosed. The apparatus including transceiver circuitry and processing circuitry configured to receive a frame and determine whether the frame is a frame transmitted from a basic service set (BSS) or a frame transmitted from an OBSS based on one or more media access control (MAC) addresses of the frame. The MAC address may include an indication of a BSS of the HE wireless device. If the HE wireless device is an access point, then a second part of the MAC address may be a predetermined pattern, the second part of the MAC address may be a formula applied to a first part of the MAC address, or an individual/group bit of the MAC address may be set.
1. An apparatus of a wireless device, the apparatus comprising: memory; and, processing circuitry coupled to the memory, the processing circuitry configured to:
decode a frame and determine whether the frame is a frame transmitted from a basic service set (BSS) or a frame transmitted from an overlapping basic service set (OBSS) based on one or more media access control (MAC) addresses of the frame, wherein the wireless device is associated with the BSS; and
if a subfield of a MAC address of the one or more MAC addresses of the frame indicates the MAC address is an address of a first access point, determine that the MAC address is a first address of a first access point, and compare the first address of the first access point with a second address of a second access point of the BSS, and determine the frame is the BSS frame if the first address is the same as the second address, otherwise determine the frame is the OBSS frame.
2. The apparatus of claim 1 , wherein the processing circuitry is configured to:
determine the frame is the frame transmitted from the OBSS based on decoding a first portion of the frame; and
if an energy threshold of the frame transmitted from the OBSS is below a threshold, cause to be transmitted an uplink frame that overlaps in time with a second portion of the frame, wherein the uplink frame is to be transmitted on a same sub-channel as the frame transmitted from the OBSS.
3. The apparatus of claim 1 , wherein a locally administered subfield of the frame is set to indicate the one or more MAC addresses are locally administered addresses, and wherein the processing circuitry is further configured to:
determine whether the frame is the frame transmitted from the BSS or the frame transmitted from the OBSS based on one of the following: an identification of the BSS or an identification of the OBSS in one of the one or more MAC addresses; or, an indication that one of the one or more MAC addresses is an address of an access point.
4. The apparatus of claim 1 , wherein the processing circuitry is configured to:
compare a receiver address and a transmitter address of the frame with an address of an access point of the BSS, and determine the frame is the frame transmitted from the BSS if the receiver address or the transmitter address is the same as the address of the access point of the BSS, otherwise determine the frame is the frame transmitted from the OBSS frame, wherein the receiver address and the transmitter address are the one or more MAC addresses of the frame.
5. The apparatus of claim 1 , wherein the processing circuitry is configured to
if a second part of a MAC address of the one or more MAC addresses is the same as a result of a formula applied to a first part of the MAC address, determine that the MAC address is a first address of a first access point, and compare the first address of the first access point with a second address of a second access point of the BSS, and determine the frame is the BSS frame if the first address is the same as the second address, otherwise determine the frame is the OBSS frame.
6. The apparatus of claim 5 , wherein the formula is a cyclic redundancy code formula.
7. The apparatus of claim 1 , wherein the processing circuitry is configured to:
if a second part of a MAC address of the one or more MAC addresses is a predetermined pattern, determine that the MAC address is a first address of a first access point, and compare the first address of the first access point with a second address of a second access point of the BSS, and determine the frame is the BSS frame if the first address is the same as the second address, otherwise determine the frame is the OBSS frame.
8. The apparatus of claim 1 , wherein the subfield is one bit, and wherein the processing circuitry is configured to:
set the subfield to zero; and
set the first address to the MAC address.
9. The apparatus of claim 1 , wherein the subfield is a bit and the frame is a clear to send frame.
10. The apparatus of claim 1 , wherein a MAC address of the one or more MAC addresses comprises a first subfield that comprises an identification of the BSS or the OBSS.
11. The apparatus of claim 10 , wherein the MAC address further comprises a second subfield that identifies the MAC address as an Institute of Electrical and Electronic Engineers (IEEE) 802.11ax MAC address and a third subfield, wherein at least two of the first subfield, the second subfield, and the third subfield are used as the IEEE 802.11ax MAC address, wherein the second subfield is a predefined pattern or a cyclic redundancy code (CRC) of the first subfield and the third subfield.
12. The apparatus of claim 10 ; wherein the processing circuitry is configured to:
determine the frame is the frame transmitted from the BSS if the identification is of the BSS, otherwise determine the frame is the frame transmitted from the OBSS, wherein the identification is a color of the BSS or the OBSS.
13. The apparatus of claim 1 , wherein the wireless device is at least one from the following group:
a station, a master station, a high-efficiency local-area wireless network (HEW) station, a HEW master station, an Institute of Electrical and Electronic Engineers (IEEE) 802.11ax access point, and an IEEE 802.11ax station.
14. The apparatus of claim 1 , further comprising: one or more antennas coupled to the processing circuitry.
15. The apparatus of claim 14 , wherein the processing circuitry is further configured to receive the frame.
16. The apparatus of claim 1 , wherein the memory is configured to store the decoded frame.
17. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors; the instructions to configure the one or more processors to cause a wireless device to:
receive a frame and determine whether the frame is a frame transmitted from a basic service set (BSS) or a frame transmitted from an overlapping basic service set (OBSS) based on one or more media access control (MAC) addresses of the frame; and
if a second part of a MAC address of the one or more MAC addresses is the same as a result of a formula applied to a first part of the MAC address, determine that the MAC address is a first address of a first access point, and compare the first address of the first access point with a second address of a second access point of the BSS, and determine the frame is the BSS frame if the first address is the same as the second address, otherwise determine the frame is the OBSS frame.
18. The non-transitory computer-readable storage medium of claim 17 , the instructions to further configure the one or more processors to cause the wireless device to:
compare a receiver address and a transmitter address of the frame with an address of an access point of the BSS, and determine the frame is the frame transmitted from the BSS frame if the receiver address or the transmitter address is the same as the address of the access point of the BSS, otherwise determine the frame is the frame transmitted from the OBSS frame, wherein the receiver address and the transmitter address are the one or more MAC addresses of the frame.
19. The non-transitory computer-readable storage medium of claim 17 , wherein a MAC address of the one or more MAC addresses comprises a first subfield that comprises an identification of the BSS or the OBSS, and wherein the MAC address further comprises a second subfield that identifies the MAC address as an Institute of Electrical and Electronic Engineers (IEEE) 802.11ax MAC address and a third subfield comprising a portion of the MAC address.
20. A method performed by a wireless apparatus, the method comprising:
receiving a frame and determining whether the frame is a frame transmitted from a basic service set (BSS) or a frame transmitted from an overlapping basic service set (OBSS) based on one or more media access control (MAC) addresses of the frame; and
if a second part of a MAC address of the one or more MAC addresses is a predetermined pattern, determining that the MAC address is a first address of a first access point, and compare the first address of the first access point with a second address of a second access point of the BSS, and determining the frame is the BSS frame if the first address is the same as the second address, otherwise determining the frame is the OBSS frame.
21. The method of claim 20 , further comprising:
comparing a receiver address and a transmitter address of the frame with an address of an access point of the BSS; and
determining the frame is the frame transmitted from the BSS frame if the receiver address or the transmitter address is the same as the address of the access point of the BSS, otherwise determining the frame is the frame transmitted from the OBSS frame, wherein the receiver address and the transmitter address are the one or more MAC addresses of the frame.