Multiplex communications – Channel assignment techniques – Carrier sense multiple access
Reexamination Certificate
2008-07-22
2008-07-22
Kizou, Hassan (Department: 2609)
Multiplex communications
Channel assignment techniques
Carrier sense multiple access
Reexamination Certificate
active
07403539
ABSTRACT:
Techniques for and apparatus capable of implementing packet detection and signal recognition in wireless communications systems are disclosed. In particular, the disclosed techniques and apparatus incorporate at least one of relative energy detection operable on assessment of a relative energy threshold for an inbound signal borne across an RF channel, carrier sense operable upon on assessment of at least one of a peak-to-sidelobe ratio and peak-to-peak distance defined by the inbound signal, and comparison operable upon demodulated data corresponding to the inbound signal as compared to predetermined preamble data. Clear channel assessment is performed based on determinations undertaken by one or more of the aforementioned relative energy detection, carrier sense and comparison operations.
REFERENCES:
patent: 6067291 (2000-05-01), Kamerman et al.
patent: 6469997 (2002-10-01), Dorenbosch et al.
patent: 6675012 (2004-01-01), Gray
patent: 6834045 (2004-12-01), Lappetelainen et al.
patent: 2002/0061738 (2002-05-01), Simmons et al.
patent: 1124337 (2001-08-01), None
IEEE std. 802.11b—1999,Sponsor LAN MAN Standards Committee of IEEE Computer Society, “Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, Higher-Speed Physical Layer Extension in 2.4 GHz Band,” Sep. 1999, pp. 1-89.
International Standard, ANSI/IEEE std. 802.11, first edition,Sponsor LAN MAN Standards Committee of IEEE Computer Society, “Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications,” 1999.
Geier, Jim, “Wireless LANs, Second Edition”,SAMS Publishing, 2000, pp. 137-151.
IEEE Standards 802.16, “Local and Metropolitan Area Networks—Part 16: Interface for Fixed Broadband Wireless Access Systems,” Oct, 1, 2004, 893 pages.
IEEE Std 802.11a-1999,Sponsor LAN MAN Standards Committee of IEEE Computer Society, “Part 11:Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-speed Physical Layer in the 5 GHZ Band.” Sep. 1999, pp. 1-83.
IEEE P802.11g/D8.2-Apr. 2003,Sponsor LAN/MAN Standards Committee of the IEEE Computer Society, Part 11:Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, Further Higher Data Rate Extension in the 2.4 GHZ Band, 2003, pp. 1-69.
IEEE Std 802.16a-2003,Sponsor LAN/MAN Standards Committee of IEEE Computer Society and the IEEE Microwave Theory and Techniques Society, “Part 16: Air Interface for Fixed Broadband Wireless Access Systems-Amendment 2: Medium Access Control Modifications and Additional Physical Layer Specifications for 2-11 GHz.” 2003, pp. 1-292.
IEEE Std 802.11a-1999(Supplement to IEEE Std 802.11-1999) [Adopted by ISO/IEC and redesignated as ISO/IEC 8802-11: 1999/Amd 1:2000(E)]; Supplement to IEEE Standard for Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications High-speed Physical Layer in the 5 GHz Band; LAN/MAN Standards Committee of the IEEE Computer Society; 91 pages.
IEEE P802.11g/D8.2, Apr. 2003 (Supplement to ANSI/IEEE Std. 802.11-1999(Reaff 2003)); DRAFT Supplement to STANDARD [for] Information Technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medidum Access Control (MAC) and Physical Layer (PHY) specifications: Further Higher Data Rate Extension in the 2.4 GHz Band; LAN/MAN Standards Committee of the IEEE Computer Society; 69 pages.
IEEE Std 802.16a-2003 (Amendment to IEEE Std 802.16-2001), IEEE Standard for Local and metropolitan area networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems -- Amendment 2: Medium Access Control Modifications and Additional Physical Layer Specifications for 2-11 GHz; IEEE Computer Society and the IEEE Microwave Theory and Techniquest Society; Apr. 1, 2003; 318 pages.
Feng Weishi
Hsu Yungping
Hu Guorong
Tang Hsiao-Cheng
Kizou Hassan
Lee Betty
Marvell International Ltd.
LandOfFree
Clear channel assessment in wireless communications does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Clear channel assessment in wireless communications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Clear channel assessment in wireless communications will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2760346