Collision avoidance in IEEE 802.11 contention free period (CFP) with overlapping basic service sets (BSSs)
First Claim
Patent Images
1. A medium access control (MAC) protocol for avoiding collisions from stations (STAs) comprising two or more IEEE 802.11 basic service sets (BSSs) collocated and operating in the same channel during contention free periods (CFPs), comprising:
- a network allocation vector (NAV);
means for utilizing ready-to-send—
(RTS)/clear-to-send(CTS) exchange during CFPs to avoid potential collision from STAs in overlapping BSSs; and
means for providing overlapping network allocation vectors (ONAV) in addition to the network allocation vector (NAV) for processing by the means for utilizing.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless medium access control (MAC) protocol and system for implementing the MAC protocol is arranged to operate in such a manner as to avoid collisions from stations (STAs) comprising two or more IEEE 802.11 basic service sets (BSSs), collocated and operating in the same channel during contention free periods (CFPs). The MAC protocol utilizes ready-to-send (RTS)/clear-to-send(CTS) signals that are exchanged during CFPs to avoid potential collision from STAs in overlapping BSSs.
66 Citations
9 Claims
-
1. A medium access control (MAC) protocol for avoiding collisions from stations (STAs) comprising two or more IEEE 802.11 basic service sets (BSSs) collocated and operating in the same channel during contention free periods (CFPs), comprising:
-
a network allocation vector (NAV); means for utilizing ready-to-send—
(RTS)/clear-to-send(CTS) exchange during CFPs to avoid potential collision from STAs in overlapping BSSs; andmeans for providing overlapping network allocation vectors (ONAV) in addition to the network allocation vector (NAV) for processing by the means for utilizing. - View Dependent Claims (2, 3, 4, 5, 7)
-
-
6. A method for implementing a medium access control (MAC) protocol for avoiding collisions from stations (STAs) comprising two or more IEEE 802.11 basic service sets (BSSs) collocated and operating in the same channel during contention free periods (CFPs), the method comprising the steps:
-
providing a network allocation vector (NAV); utilizing ready-to-send—
(RTS)/clear-to-send(CTS) exchange during CFPs to avoid potential collision from STAs in overlapping BSSs; andproviding overlapping network allocation vectors (ONAV) in addition to the network allocation vector (NAV) to support the Step of utilizing.
-
-
8. A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for which define a medium access control (MAC) protocol for implementing a medium access control (MAC) protocol for avoiding collisions from stations (STAs) comprising two or more IEEE 802.11 basic service sets (BSSs) collocated and operating in the same channel during contention free periods (CFPs), the method comprising the steps:
-
providing a network allocation vector (NAV); utilizing ready-to-send—
(RTS)/clear-to-send(CTS) exchange during CFPs to avoid potential collision from STAs in overlapping BSSs; andproviding overlapping network allocation vectors (ONAV) in addition to the network allocation vector (NAV), for processing by the means for utilizing.
-
-
9. A medium access control (MAC) protocol for avoiding collisions from stations (STAS) comprising two or more IEEE 802.11 basic service sets (BSSs) collocated and operating in the same channel during contention free periods (CFPs), comprising:
-
Means for providing a network allocation vector (NAV); and Means for providing overlapping network allocation vectors (ONAV) in addition to the network allocation vector (NAV), for processing by the means for utilizing.
-
Specification