Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1983-05-05
1984-10-02
Rubinson, Gene Z.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455 33, 455 56, H04Q 704
Patent
active
044750102
ABSTRACT:
In a cellular mobile telecommunication system, a method and apparatus for controlling the process of locating a mobile unit from the cell sites. When a mobile unit goes beyond the radio range of its associated controlling cell site, that cell site sends a message to nearby cell sites to measure and report the strength of the received signal from that mobile on each of their directional antennas and to report radio channel availability. These reports are returned to the controlling cell site which compares the received signal strength mesurements against stored thresholds. The controlling cell site generates and transmits to the mobile telecommunications switching office (MTSO) a hand-off request message including a list of candidate hand-off cell sites and directional antennas. The MTSO then selects an available channel associated with one of the candidate cell sites and antennas and generates a sequence of messages to hand-off communications control from the controlling cell site to a candidate cell site.
REFERENCES:
patent: 3663762 (1972-05-01), Joel, Jr.
patent: 3819872 (1974-06-01), Hamrick
patent: 3906166 (1975-09-01), Cooper et al.
patent: 4144411 (1979-03-01), Frenkiel
patent: 4144412 (1979-03-01), Ito et al.
patent: 4144496 (1979-03-01), Cunningham et al.
patent: 4228319 (1980-10-01), De Jager et al.
AT&T Advanced Mobile Phone Service Development Report No. 9: Prepared for the Federal Communications Commission by American Telephone and Telegraph Company and Illinois Bell Telephone Company; May 29, 1979, Attachment II.
V. H. MacDonald, "The Cellular Concept", The Bell System Technical Journal, vol. 58, No. 1, Jan. 1979.
N. Ehrlich, R. E. Fisher, and T. K. Wingard, "Cell-Site Hardware", The Bell System Technical Journal, vol. 58, No. 1, Jan. 1979.
Z. C. Fluhr and P. T. Porter, "Control Architecture", The Bell System Technical, vol. 58, No. 1, Jan. 1979.
Huensch George D.
Lien Robert L.
Lind Jerol M.
MacDonald Verne H.
AT&T Bell Laboratories
Brady W. J.
Rubinson Gene Z.
Visserman P.
LandOfFree
High density cellular mobile radio 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 High density cellular mobile radio communications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High density cellular mobile radio communications will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-527708