Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2006-06-05
2009-12-15
D'Agosta, Stephen M (Department: 2617)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C455S320000, C455S329000, C455S338000, C455S341000, C455S342000, C455S041200, C455S041300, C455S450000, C455S451000, C455S452200
Reexamination Certificate
active
07633907
ABSTRACT:
A radio LAN (Local Area Network) system includes an access point and a mobile or a fixed station each having a physical layer implemented by a direct spread spectrum system. The LAN system uses different spread codes, maintains transmission power semi-fixed, and selects a frequency and a frequency band in accordance with the kind and amount of information. A data link layer above each physical layer includes an LLC (Logical Link Control) sublayer and an MAC (Media Access Control) sublayer. The MAC sublayer uses a CDMA (Code Division Multiple Access) system as an access system for thereby implementing a data structure in accordance with the kind and amount of information.
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D'Agosta Stephen M
Oki Electric Industry Co. Ltd.
Rabin & Berdo PC
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