USO0RE43 964E

(19) United States (12) Reissued Patent

(10) Patent Number: US RE43,964 E (45) Date of Reissued Patent: *Feb. 5, 2013

Fischer et a]. (54)

FOREIGN PATENT DOCUMENTS

CELLULAR COMMUNICATIONS SYSTEM WITH SECTORIZATION

CA CA

2008900 2008900

(75) Inventors: Larry G. Fischer, Waseca, MN (US);

(Continued)

David S. Russell, St. Paul, MN (US);

OTHER PUBLICATIONS

Philip M. Wala, Waseca, MN (US); Charles R. Ratliff, Guatemala (GT);

“And now a few words from your Customers . . . ” Four pages. ADC

Jeffrey O. Brennan, Waseca, MN (US)

KentroX.COPYRGT. A Subsidiary of ADC Telecommunications, Inc. Aug. 1992.

(73) Assignee: ADC Telecommunications, Inc., Shakopee, MN (US) (*)

Notice:

(Continued) Primary Examiner * Temesgh Ghebretinsae

This patent is subject to a terminal dis claimer.

Assistant Examiner * Richard Chan

(74) Attorney, Agent, or Firm * Fogg & Powers LLC

(21) App1.N0.: 11/937,255 (22) Filed:

(57)

Nov. 8, 2007

communications area includes providing a remote unit hav

ing microcell antenna units. Each microcell antenna unit is

Reissue of:

Issued:

Appl. No.: Filed: U.S. Applications: (60)

5,852,651

con?gured to cover a particular sector. The remote unit is connected to a sectorized base station unit which is connected

Dec. 22, 1998

to a mobile telecommunications switching of?ce. Separate

08/299,159 Aug. 31, 1994

digitized streams representative of telephone signals received from the mobile telecommunications switching o?ice are generated corresponding to the microcell antenna units and the separate digitized streams are multiplexed and transmit ted to the remote unit. The remote unit demultiplexes the

Continuation of application No. 09/747,273, ?led on Dec. 22, 2000, now Pat. No. Re. 40,564, which is a division of application No. 08/ 204,660, ?led on Mar. 2,

multiplexed digitized streams into the separate digitized streams corresponding to the microcell antenna units and the separate digitized streams are converted to RF signals for coverage of a particular sector by the corresponding microcell antenna unit. Separate digitized streams are separately gen erated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector. The separately generated digitized streams are multi plexed at the remote unit and transmitted to the sectorized base station unit. At the sectorized base station unit, the mul

1994, now Pat. No. 5,627,879, which is a continuation

(Continued) (51)

Int. Cl. H04B 10/12

(52)

U.S. Cl. ..... .. 379/56.2; 398/115; 398/41; 455/562.1

(58)

Field of Classi?cation Search ................ .. 455/279,

(2006.01)

455/279.2, 354 See application ?le for complete search history. (56)

ABSTRACT

A method and apparatus for sectorizing coverage of a cellular

Related U.S. Patent Documents

(64) Patent No.:

l/l990 10/1990

tiplexed digitized streams are demultiplexed into the separate digitized streams corresponding to microcell antenna units and the separate digitized streams are converted to RF signals

References Cited

for provision to the mobile telecommunications switching o?ice. Diversity at the remote units is also provided.

U.S. PATENT DOCUMENTS

(Continued)

149 Claims, 58 Drawing Sheets 134 /

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US RE43,964 E Page 2 Related US. Application Data

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A2 A2 A1 A2 A2 A2

9/1988 3/1977 4/1985 1/1986 6/1989 11/1989 12/1989 3/1990 5/1990 10/1990 7/1991 1/1992 10/1977 0/0000 6/1983 9/1983 2/1991 1/1993 10/1991

OTHER PUBLICATIONS ADC KentroX, News Release, “ADC KentroX Introduces Innovative Wireless Network Access Solution Cellular Subscribers Offered a

New Level of Portable Services,” Mar. 1, 1993 (3 pages). ADC Kentrox, News Release, “First Field Trial Results Exceeds

Expectations,” Mar. 2, 1993 (2 pages). ADC Kentrox Wireless System Group CityCell.TM. 824iA Posi tioning white paper, (Mar. 1993) CITA Trade Show. “ADC KentroX Introduces CityCell 824, A Replacement for Conven tional Cell Sites; Company’s Original Goal Was To Improve Fiber Optic T1 Links Between Cells, MTSOs,” Telocator Bulletin, Feb.

1993 (1 page). Ameritech, “Broadband Optical Transport Digital Microcell Con nection Serviceilnterface and Performance Speci?cations. A tech nical descriptionof the User-Network Interface and Performance

Speci?cations,”AM TR-NIS 000117, (pp. 1-26), Issue 1, Dec. 1993. Cellular Industry, The Day Group, “New Signal Transport Technol

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US RE43,964 E Page 3 Gupta et al., “Land Mobile Radio SystemsiA Tutorial Exposition”, IEEE Communications Magazine, vol. 23(6), Jun. 1985, pp. 34-45. Ishio et al., “A Two-Way Wavelength-Division-Multiplexing Trans

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mission and its Application to a Switched TV Distribution System,”

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Spectrum, Jun. 1993, pp. 20-25. Lee et al., 1993 43rd IEEE Vehicular Technology Conference, May 18-20, 1993, Personal CommunicationiFreedom Through Wireless

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Technology, PacTel Corporation, published May 18, 1993, “Intelli gent Microcell Applications in PCS,” pp. 722-725. Merrett et al., 41st IEEE Vehicular Technology Conference, May 19-22, 1991, Gateway to the Future Technology, 91CH2944-7, Brit ish Telecom Research Laboratories, “A Cordless Access System Using Radio-Over-Fibre Techniques,” pp. 921-924. Miicrowaves & RF, “Digital Transport for Cellular,” Feb. 1993. Microwaves & RF, Mar. 1993, “Offshore Markets Gain in SiZe, Competitiveness, Even the smallest industry companies are expand ing their global business, despite such costly distractions as ISO

9000” (pp. 33, 34, 36-39). O’Byrne, Vehicular Technology Society 42nd VTS Conference Fron tiers of Technology, From Pioneers to the 21st Century, GTE Labo ratories Incorporated, “TDMA and CDMA in a Fiber-Optic Environ

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cation for Amaurotic Digital Microcell Connection Service. To: Amaurotic and Vendor Community. AM TR-NIS 000117. Issue 1, Dec. 1993.

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2, 1993). News Releasei“ADC Kentrox Introduces Innovative Wireless Net

work Access Solution” (Mar. 1, 1993). 41st IEEE Vehicular Technology Conference, May 19-22, 1991, Gateway to the Future Technology, 91CH2944-7, British Telecom Research Laboratories, R P Merrett, A J Cooper & I C Symington, “A

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Calls,” (1 page). A Two-Way Wavelength-Division-Multiplexing Transmission and its Application to a Switched TV Distribution System, Electrical

Communication Laboratories, Nipon Telegraph & Telephone Public Corporation, Yokosuka, Japan and Technical Bureau, Nippon Tele graph & Telephone Public Corporation, Tokyo, Japan, Hideki Ishio, et al. (10 pages). Microwaves & RF, Mar. 1993, “Offshore Markets Gain in SiZe,

Competitiveness, Even the smallest industry companies are expand ing their global business, despite such costly distractions as ISO

9000” (1 page). “New Signal Transport Technology DigitiZes The Cellular Band” Cellular IndustryiThe Day Group.

1993 43rd IEEE Vehicular Technology Conference, May 18-20, 1993, Personal CommunicationiFreedom Through Wireless Tech 1993, “A New Microcell Architecture Using Digital Optical Trans port,” pp. 585-588. 1993 43rd IEEE Vehicular Technology Conference, May 18-20, 1993, Personal CommunicationiFreedom Through Wireless Tech

nology, PacTel Corporation, W.C.Y. Lee, Terry BenZ, Ron Rudokas, published May 18, 1993, “Intelligent Microcell Applications In PCS,” pp. 722-725. Vehicular Technology Society 42nd VTS Conference Frontiers of Technology, From Pioneers to the 21st Century, GTE Laboratories Incorporated, Vincent O’Byrne, “TDMA and CDMA in a Fiber

Optic Environment,” vol. 2 of 2, pp. 727-731. (May 10, 1992). * cited by examiner

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