Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2008-09-09
2008-09-09
Orgad, Edan (Department: 2619)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S311000, C370S338000, C370S449000, C370S459000, C370S473000, C455S343200, C455S465000, C455S503000, C455S525000, C455S574000, C709S238000, C709S242000
Reexamination Certificate
active
10844303
ABSTRACT:
A power-save method for a network with an access point and an associated power-save client. The access point buffers wireless data that includes a unicast frame and a multicast frame. A periodic scheduled beacon message is transmitted with a unicast indication element and a multicast indication element. The unicast element instructs a client to remain awake to receive a buffered unicast frame, which includes a destination MAC address. The multicast element instructs a client to remain awake following the beacon to receive a buffered multicast frame, which includes a destination multicast address designating a multicast group of which the client is a member. At least one beacon message is designated as a multicast delivery beacon. The buffered multicast frame is transmitted following the designated multicast beacon. The multicast element contains a list of entries, each entry corresponding to either a multicast MAC address, multicast IP address, or client identifier.
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Griswold Victor
Meier Robert C.
Cisco Technology Inc.
Haliyur Venkatesh
Orgad Edan
Tucker Ellis & West LLP
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