Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-01-31
2006-01-31
Kincaid, Lester G. (Department: 2687)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S437000, C455S439000, C455S442000, C455S447000, C455S452100
Reexamination Certificate
active
06993333
ABSTRACT:
A wireless communications system, e.g., an OFDM system, uses a plurality of carrier frequencies each with an associated frequency band. A base station sector transmitter in the system transmits ordinary signaling, e.g., user data, in its own assigned band. In addition the sector base station transmitter periodically transmits beacon signals into its own frequency band and the frequency bands used by adjacent sector transmitters for their ordinary signaling. Beacon signals, being short duration high power signals with sector transmission power concentrated on one or a few tones, are easily detectable. Each beacon signal may be identified as to the source base station sector transmitter, e.g., based on tone. A mobile node, tuned to a single carrier band, receives a plurality of beacon signals, identifies the sources of the received beacons, compares the received strength of the beacons, and makes handoff decisions, without having to switch carrier band.
REFERENCES:
patent: 4833701 (1989-05-01), Comroe et al.
patent: 5200952 (1993-04-01), Bernstein et al.
patent: 5229992 (1993-07-01), Jurkevich et al.
patent: 5247516 (1993-09-01), Bernstein et al.
patent: 5251209 (1993-10-01), Jurkevich et al.
patent: 5267261 (1993-11-01), Blakeney, II et al.
patent: 5491835 (1996-02-01), Sasuta et al.
patent: 5572528 (1996-11-01), Shuen
patent: 5991289 (1999-11-01), Huang et al.
patent: 6078571 (2000-06-01), Hall
patent: 6144671 (2000-11-01), Perinpanathan et al.
patent: 6161008 (2000-12-01), Lee et al.
patent: 6195705 (2001-02-01), Leung
patent: 6256300 (2001-07-01), Ahmed et al.
patent: 6308267 (2001-10-01), Gremmelmaier
patent: 6366561 (2002-04-01), Bender
patent: 6400722 (2002-06-01), Chuah et al.
patent: 6445922 (2002-09-01), Hiller et al.
patent: 6446127 (2002-09-01), Schuster et al.
patent: 6466964 (2002-10-01), Leung et al.
patent: 6611547 (2003-08-01), Rauhala
patent: 6763007 (2004-07-01), La Porta et al.
patent: 6862446 (2005-03-01), O'Neill et al.
patent: 2001/0036164 (2001-11-01), Kakemizu et al.
patent: 2001/0041571 (2001-11-01), Yuan et al.
patent: 2001/0046223 (2001-11-01), Malki et al.
patent: 2002/0015396 (2002-02-01), Jung
patent: 2002/0018456 (2002-02-01), Kakemizu et al.
patent: 2002/0026527 (2002-02-01), Das et al.
patent: 2002/0068565 (2002-06-01), Purnadi et al.
patent: 2002/0136226 (2002-09-01), Christoffel et al.
patent: 2002/0191593 (2002-12-01), O'Neill et al.
patent: 2003/0012179 (2003-01-01), Yano et al.
patent: 2003/0137961 (2003-07-01), Tsirtsis et al.
patent: 2003/0176188 (2003-09-01), O'Neill
patent: 2003/0214922 (2003-11-01), Shahrier
patent: 2003/0228868 (2003-12-01), Turanyi et al.
patent: 2004/0018841 (2004-01-01), Trossen
patent: 2005/0063349 (2005-03-01), LoGalbo et al.
patent: WO/95/12297 (1995-05-01), None
patent: WO/98/47302 (1998-10-01), None
C Perkins, Editor “IP Mobility Support”, Network Working Group, pp. 1-79 (Oct. 1996).
Li, Yalun “Protocol Architecture for Universal Personal Computing” IEEE Journal of Selected Areas in Communications 15(8): 1467-1476 (1997), no month listed.
J. Moy, Editor “OSPF Version 2”, Network Working Group, pp. 1-244 (Apr. 1998).
Valko, Andras “Cellular IP: A New Approach to Internet Host Mobility” Computer Communications Review 29(1): 50-65 (1999), no month listed.
TIA/EIZ/IS-707A.8 “Data Service Options for Spread Spectrum Systems: Radio Link Protocol Type 2”, pp. 1-1:4:2 (Mar. 1999).
IETF, Network Working Group, Request for Comments: 2205, Resource Reservation Protocol (RSVP)—Version 1 Functional Specification, pp. 1-105 (Sep. 1997).
IETF, Network Working Group, Request for Comments: 2206, RSVP Management Informatin Base Using SMIv2, pp. 1-60 (Sep. 1997).
IETF, Network Working Group, Request for Comments: 2207, RSVP Extension for IPSEC Data Flows, pp. 1-14 (Sep. 1997).
IETF, Network Working Group, Request for Comments: 2210, The Use of RSVP with IETF Integrated Services, pp. 1-31 (Sep. 1997).
IETF, Network Working Group, Request for Comments: 2208, Resource Reservation Protcol (RSVP) Version 1 Applicability Statement Some Guidelines on Deployment, pp. 1-6 (Sep. 1997).
IETF, Network Working Group, Request for Comments: 2209, Resource Reservation Protcol (RSVP)—Version 1 Message Processing Rules, pp. 1-24 (Sep. 1997).
Andras G. Valko, “Cellular IP—A New Approach to Internet Host Mobility,” ACM Computer Communication Review, vol. 29, No. 1, pp. 50-65, Jan. 1999.
Karagiannis, Mobile IP, State of the Art Report, pp. 1-63, Jul. 1999.
Elin Wedlund et al., “Mobility Support Using SIP”, Proc. of ACM/IEEE International Conference on Wireless and Mobile Multimedia (WoWMoM '99), Seattle, Washington, Aug. 1999.
Henning Schulzrinne et al., “Application-Layer Mobility Using SIP”, 0-7803-7133 IEEE, pp. 29-36, Jan. 2000.
“Source Specific Multicast (SSM) Explicit Multicast (Xcast)” pps. 1-27 (Copyright 2001 by ETRI), no month listed.
IETF Network Working Group, Request for Comments: 2961, RSVP Refresh Overhead Reduction Extensions, pp. 1-32 (Apr. 2001).
Marshall, W., et al., Integration of Ressource Management and SIP, IETF Internet Draft, draft-ietf-sip-manyfolks-resource-02.txt, Aug. 2001, pp. 1-28.
Andrew T. Campbell et al., “IP Micro-Mobility Protcols”, ACM SIGMOBILE Mobile Computer and Communication Review (MC2R), vol. 4, No. 4, pp. 34-54, Oct. 2001.
S. Zhou et al., “A Location Management Scheme for Support Mobility In Wireless IP Networks Using Session Initiation Protocol (SIP)”, 1531-2216/01 IEEE, Oct. 2001, pp. 486-491.
Bos, L., et al., A Framework for End-to-End Perceived Quality of Service Negotiation, IETF Internet Draft, draft-bos-mmusic-sdpqos-framework-00.txt, Nov. 2001, pp. 1-22.
Papalilo, D., et al., Extending SIP for QoS Support www.coritel.it/publications/IP—download/papalilo-salsano-veltri.pdf, Dec. 8, 2001, pp. 1-6.
Camarillo, P., et al., Integration of Resource Management and SIP, IETF Internet Draft, draft-ietf-sip-manyfolks-resource-04.ps, Feb. 25, 2002 pp. 1-18.
Ho, Integration AAA with Mobile IPv4, Internet Draft, pp. 1-59, Apr. 2002.
“SIP: Session Initiation Protocol”, IEFT Network Wording Group, Request for Comments: 3261, (Jun. 2002), pps 1-29.
IETF, Network Working Group, Request for Comments: 3261 “SIP: Session Initiation Protocol”, pp. 1-269 (printed as pp. 1-252) (Jun. 2002).
NetworkWorking Group, IPv6 Prefix Delegation Using ICMPv6, pps 1-33, Apr. 2004.
IETF Mobile IP Working Group, “Mobility Support in IPv6”, D. Johnson, Rice University, C. Perkins, Nokia Research Center, J. Arkko, Ericsson; Feb. 26, 2003, downloaded from http://www.join.uni-muenster.de on Dec. 29, 2004, pp. 1-158.
Network Working Group, “IP Mobility Support for IPv4”, C. Perkins, Ed., Nokia Research Center, Jan. 2002, downloaded from http://www.ietf.org on Dec. 29, 2004, pp. 1-92.
Lane Frank A.
Laroia Rajiv
Cho Un C.
Flarion Technologies, Inc.
Kincaid Lester G.
Straub Michael P.
Straub & Pokotylo
LandOfFree
Methods and apparatus of improving inter-sector and/or... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus of improving inter-sector and/or..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus of improving inter-sector and/or... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3549851