Method and system for coexistence between 20 MHz and 40 MHz overlapping basic service sets (OBSS) in wireless local area networks
Aspects of a method and system for coexistence between 20 MHz and 40 MHz OBSSes in WLANs. Aspects of a system may include a receiving device, such as a WLAN station (STA), which enables reception of an information frame, such as a management frame, via a wireless communication medium. The receiving device may be associated with a wireless network device group, such as a basic service set (BSS). The information frame received by the receiving device may transmitted by a transmitting device, such as a transmitting access point (AP), which is associated with a foreign wireless network device group, for example a foreign BSS. The receiving device may be reconfigured to restrict RF channel bandwidth utilized for transmitting and/or receiving signals via the wireless communication medium based on the received information frame.
1. A method for communicating data, the method comprising:
receiving an information frame via a wireless communication medium at a receiving device, which is associated with a wireless network device group, wherein said information frame is transmitted by a transmitting device, which is associated with a different wireless network device group;
determining whether said received information frame comprises capabilities information for said transmitting device; and
reconfiguring said receiving device to restrict RF channel bandwidth utilized for transmitting and/or receiving signals via said wireless communication medium based on an absence of said capabilities information within said received information frame.
2. The method according to claim 1 , comprising reconfiguring said receiving device based on one or more RF channel bandwidth restriction indications, which are communicated via said capabilities information.
3. The method according to claim 2 , comprising communicating information based on one or both of said reconfiguring and/or said one or more RF channel bandwidth restriction indications, to at least one other device associated with said wireless network device group.
4. The method according to claim 1 , comprising communicating information based on said reconfiguring to at least one other device associated with said wireless network device group.
5. The method according to claim 1 , comprising setting a value for a reconfiguration timer at a time instant subsequent to said reconfiguration.
6. The method according to claim 5 , comprising determining whether a subsequent information frame is received prior to the expiration of said reconfiguration timer.
7. The method according to claim 6 , comprising resetting a value for said reconfiguration timer when one or both of the following occurs during a current time measurement period for said reconfiguration timer:
absence of capabilities information is detected in said subsequent received information frame; and/or
specified value(s) for one or more RF bandwidth restriction indications are detected in said subsequent received information frame.
8. The method according to claim 6 , comprising performing a subsequent reconfiguring at said receiving device at a time instant subsequent to the expiration of said reconfiguration timer when one or both of the following occurs during a current time measurement period for said reconfiguration timer:
no information frames for which capabilities information is absent are received at said receiving device; and/or
no information frames comprising specified values for one or more RF bandwidth restriction indications are received at said receiving device.
9. The method according to claim 8 , wherein said subsequent reconfiguring restores said receiving device to an operational mode that existed prior to said configuring.
10. The method according to claim 1 , comprising reconfiguring said receiving device to restrict RF channel bandwidth utilized for transmitting and/or receiving signals via one or more specific RF channels.
11. A system for communicating data, the system comprising:
one or more circuits that enable reception of an information frame via a wireless communication medium at a receiving device, which is associated with a wireless network device group, wherein said information frame is transmitted by a transmitting device, which is associated with a different wireless network device group;
said one or more circuits enable determination of whether said received information frame comprises capabilities information for said transmitting device; and
said one or more circuits enable reconfiguration of said receiving device to restrict RF channel bandwidth utilized for transmitting and/or receiving signals via said wireless communication medium based on an absence of said capabilities information within said received information frame.
12. The system according to claim 11 , wherein said one or more circuits enable reconfiguration of said receiving device based on one or more RF channel bandwidth restriction indications, which are communicated via said capabilities information.
13. The system according to claim 12 , wherein said one or more circuits enable communication of information based on one or both of said reconfiguration and/or said one or more RF channel bandwidth restriction indications, to at least one other device associated with said wireless network device group.
14. The system according to claim 11 , wherein said one or more circuits enable communication of information based on said reconfiguration to at least one other device associated with said wireless network device group.
15. The system according to claim 11 , wherein said one or more circuits enable setting of a value for a reconfiguration timer at a time instant subsequent to said reconfiguring.
16. The system according to claim 15 , wherein said one or more circuits enable determination of whether a subsequent information frame is received prior to the expiration of said reconfiguration timer.
17. The system according to claim 16 , wherein said one or more circuits enable resetting of a value for said reconfiguration timer when one or both of the following occurs during a current time measurement period for said reconfiguration timer:
absence of capabilities information is detected in said subsequent received information frame, and/or;
specified value(s) for one or more RF bandwidth restriction indications are detected in said subsequent received information frame.
18. The system according to claim 16 , wherein said one or more circuits enable performance of a subsequent reconfiguration at said receiving device at a time instant subsequent to the expiration of said reconfiguration timer when one or both of the following occurs during a current time measurement period for said reconfiguration timer:
no information frames for which capabilities information is absent are received at said receiving device; and/or
no information frames comprising specified values for one or more RF bandwidth restriction indications are received at said receiving device.
19. The system according to claim 18 , wherein said subsequent reconfiguration restores said receiving device to an operational mode that existed prior to said configuration.
20. The system according to claim 11 , wherein said one or more circuits enable reconfiguration of said receiving device to restrict RF channel bandwidth utilized for transmitting and/or receiving signals via one or more specific RF channels.
21. A system for communicating data, the system comprising:
one or more circuits that enable reception of an information frame via a wireless communication medium at a receiving device from a transmitting device;
said one or more circuits enable comparison of one or more communication channel identifiers associated with said received information frame and a channel identifier list generated at said receiving device;
said one or more circuits enable determination of whether said received information frame includes capabilities information for said transmitting device; and
said one or more circuits enable reconfiguration of said receiving device to restrict RF channel bandwidth utilized for transmitting and/or receiving signals via said wireless communication medium based on said comparison and absence of said capabilities information within said received information frame.
22. The system according to claim 21 , wherein said one or more circuits enable communication of information based on said reconfiguration to at least one other device associated with said wireless network device group.
23. The system according to claim 21 , wherein said one or more circuits enable setting of a value for a reconfiguration timer at a time instant subsequent to said reconfiguring.