Patent ID: 7068632
Filing Date: 2006-06-27
Classification: H04W

Abstract:
1. A method for setting up an up-stream communication session in a basic service set (BSS) in a wireless network, the communication session having a defined Quality of Service (QoS), the method comprising: detecting a first Path message and a first Resv message (Path/Resv message) of a RSVP protocol at a designated subnet bandwidth manager (DSBM) in a station having a point coordinator (PC), the first Resv message originating from a RSVP agent of a host outside the BSS, and requesting for setting up an up-stream session between a source non-PC station in the BSS and the PC station; extracting at the DSBM a QoS parameter set and a classifier from the first Path/Resv message for the session; determining at the DSBM whether to admit the up-stream session to the network based on the QoS parameter set defining the session and a channel status report on a medium access control (MAC) sublayer of the BSS; and when the up-stream session is admitted, setting up by a QoS management entity (QME) of the PC station a virtual up-stream (VUS) between the source non-PC station and the PC station for transporting the up-stream session traffic; wherein the DSBM is part of the QME in the PC station; assigning by the QME a virtual stream identifier (VSID) to the VUS; and instructing by the QME a frame scheduling entity (FSE) to create an entry corresponding to the VDS in a frame scheduling table of the FSE, the FSE being logically located in the MAC sublayer of the PC station, the entry in the frame scheduling table including the VSID and the QoS parameter set associated with the up-stream session; detecting a second Path/Resv message at the DSBM, the second Path/Resv message originating outside the DSBM and requesting a change of at least one QoS parameter value associated with the up-stream session; extracting at the DSBM the changed QoS parameter set and the classifier from the second Path/Resv message for the session; finding at the QME of the PC station the VSID that is associated with the extracted classifier; determining at the QME of the PC station whether to grant the request for change based on the changed QoS parameter set and the channel status report; when the request is not granted, operating the up-stream session according to the QoS parameter set contained in the frame scheduling table in the PC station for the VUS; and when the request is granted, instructing by the QME of the PC station the FSE of the PC-station to update the entry in the frame scheduling table corresponding to the VUS by changing at least one QoS parameter value associated with the VUS based on the requested change.