Increasing link capacity via concurrent transmissions in...

Multiplex communications – Communication over free space – Combining or distributing information via time channels

Reexamination Certificate

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C370S347000

Reexamination Certificate

active

06967944

ABSTRACT:
A system and method for providing concurrent transmission in a wireless Local Area Network (WLAN) are provided. The WLAN includes a plurality of stations for transmitting information via an assigned TDM time slot, and an access point in communication with the stations for monitoring access control and providing time allocation to allow data exchange between multiples pairs of stations, without the intervention of the access point. For establishing concurrent transmission, the access point periodically broadcasts a signal message to the stations over a wireless communication channel to determine pairs of stations that are hidden from each other based on the interference power level reported by each station.

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patent: 0663737 (1994-12-01), None
James F. Whitehead, “Distributed Packet Dynamic Resource Allocation (DRA) for Wireless Networks”, (Abstract).
S. Choi, et al: “transmitter power Control (TPC) and Dynamic Frequency Selection (DFS) Joint Proposal for 802.11h WLAN”, IEEE P802.11 Wireless LANS, Transmitter Power Control (TPC) and Dynamic Frequency Slection (DFS) Joint Proposal for 802.11h (IEEE 802.11-01/169), Online, Mar. 12, 2001, pp., 1-16, XP002213584.
T. Adachi et al; “A Stdy on Channel Usage in a Cellular Ad-Hoc United Communciation System for Operational Robots”, IEICE Transactions on Communications, Institute of Electronics Information and Comm. Eng. Tokyo, JP, vol. E81-B, No. 7, Jul. 1, 1998, pp. 1500-1506, XP000790184.

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