Virtual streams for QoS-driven wireless LANs
First Claim
1. A virtual stream (VS) in a basic service set (BSS) in a wireless local area network, the virtual stream comprising:
- a unidirectional path in the wireless local area network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS;
wherein the VS is set up by a QoS management entity (QME) within a point coordinator (PC) station of the BSS to transport, under at least one predetermined QoS constraint, a traffic of the QoS session from a local logical link control (LLC) entity to at least one peer LLC entity in the same BSS; and
wherein the PC station announces multiple transmission opportunities in a single frame; and
wherein the VS is torn down by the QME of the PC-station upon termination of the QoS session.
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Abstract
A virtual stream (VS) in a basic service set (BSS) in a wireless local area network (WLAN) that exists solely within the medium access control (MAC) sublayer of the WLAN. The VS includes a unidirectional path in the wireless network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS. The VS is defined by a VS identifier (VSID) that is unique within and local to the BSS, an address of the sourcing station, and an address of the at least one receiving station. The VS can be a virtual down-stream (VDS), a virtual upstream (VUS) or a virtual side-stream (VSS). The VS can be a unitcast or a multicast VS.
156 Citations
21 Claims
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1. A virtual stream (VS) in a basic service set (BSS) in a wireless local area network, the virtual stream comprising:
- a unidirectional path in the wireless local area network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS;
wherein the VS is set up by a QoS management entity (QME) within a point coordinator (PC) station of the BSS to transport, under at least one predetermined QoS constraint, a traffic of the QoS session from a local logical link control (LLC) entity to at least one peer LLC entity in the same BSS; and wherein the PC station announces multiple transmission opportunities in a single frame; and wherein the VS is torn down by the QME of the PC-station upon termination of the QoS session. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a unidirectional path in the wireless local area network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS;
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14. A virtual stream (VS) in a basic service set (BSS) in a wireless local area network, the virtual stream comprising:
- a unidirectional path in the wireless local area network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS;
wherein the VS is set up by a QoS management entity (QME) within a point coordinator (PC) station of the BSS to transport, under at least one predetermined QoS constraint, a traffic of the QoS session from a local logical link control (LLC) entity to at least one peer LLC entity in the same BSS; wherein the wireless local area network includes a distributed contention scheme under control of a distributed coordination function contained in each said station and the PC station controls a centralized contention scheme that functions in addition to the distributed contention scheme; wherein the VS is a unitcast VS, wherein the station sourcing the QoS session is one of a PC-station and a non-PC station of the BSS, and wherein the at least one station receiving the QoS session is one of a PC station and a non-PC station of the BSS. - View Dependent Claims (15, 16, 17)
- a unidirectional path in the wireless local area network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS;
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18. A virtual stream (VS) in a basic service set (BSS) in a wireless local area network, the virtual stream comprising:
- a unidirectional path in the wireless local area network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS;
wherein the VS is set up by a QoS management entity (QME) within a point coordinator (PC) station of the BSS to transport, under at least one predetermined QoS constraint, a traffic of the QoS session from a local logical link control (LLC) entity to at least one peer LLC entity in the same BSS; wherein the wireless local area network includes a distributed contention scheme under control of a distributed coordination function contained in each said station and the PC station controls a centralized contention scheme that functions in addition to the distributed contention scheme; wherein the VS is a multicast VS, wherein the station sourcing the QoS session is one of a PC-station and a non-PC station of the BSS, and wherein a plurality of stations of the same BSS receive the QoS session. - View Dependent Claims (19, 20, 21)
- a unidirectional path in the wireless local area network between a station sourcing a quality of service (QoS) session and at least one station receiving the QoS session in the same BSS;
Specification