Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2006-06-20
2006-06-20
Eng, George (Department: 2687)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S516000, C455S513000, C455S514000, C455S515000, C370S320000, C370S334000, C370S332000, C370S310000, C370S345000
Reexamination Certificate
active
07065376
ABSTRACT:
An invention is disclosed whereby a wireless network node, equipped with two or more radio transceivers statically tuned to non-interfering frequency channels, can make decisions regarding which channel to use when communicating with a neighboring wireless node. A multi-radio unification protocol implemented in a wireless node coordinates the use of multiple wireless network interface cards and provides a virtual layer that hides the multiple physical network interfaces from higher layers of a node's network protocol stack. The invention is applicable to wireless networks generally, including those in which some nodes do not have multiple radios or do not recognize the multi-radio unification protocol. The invention makes possible simultaneous transmissions using available channels, thereby reducing interference and delay while increasing the overall capacity of the network.
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Adya et al. “A Multi-Radio Unification Protocol for IEEE 802.11 Wireless Networks.” Microsoft Research Technical Report MSR-TR-2003-44. Redmond, Washington: Microsoft Corporation, Jul. 2003.
Adya Atul
Bahl Paramvir
Padhye Jitendra D.
Wolman Alastair
Zhou Lidong
Eng George
Microsoft Corporation
Nguyen Khai
Wolf Greenfield & Sacks P.C.
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