Communication system allowing network nodes to efficiently

Communication system allowing network nodes to efficiently
US008311020B2
(12) United States Patent
(10) Patent N0.:
(45) Date of Patent:
Wong et a].
(54)
COMMUNICATION SYSTEM ALLOWING
NETWORK NODES TO EFFICIENTLY
ESTABLISH COMMUNICATIONS WITH A
CONTROLLER
*Nov. 13, 2012
(52)
U.S. Cl. ..................................................... .. 370/336
(58)
Field of Classi?cation Search ............... .. 379/90.1;
370/449, 450, 459, 475
See application ?le for complete search history.
(75) Inventors: Gabriel K. Wong, Honolulu, HI (US);
(56)
Po S. Tui, Honolulu, HI (US)
References Cited
U.S. PATENT DOCUMENTS
(73) Assignee: GPNE Corporation, Honolulu, HI (US)
( * ) Notice:
US 8,311,020 B2
3,755,782
3,851,104
4,224,150
4,251,865
Subject to any disclaimer, the term of this
patent is extended or adjusted under 35
U.S.C. 154(b) by 0 days.
This patent is subject to a terminal dis
claimer.
A
A
A
A
8/1973
11/1974
9/1980
2/1981
Haas
Willard
Buriks
Moore
4,340,961 A
7/1982 Capel
4,345,491 A
4,392,242 A
8/1982 Hannon
7/1983 Kai
(Continued)
(21) Appl. No.: 13/070,325
(22)
Filed:
FOREIGN PATENT DOCUMENTS
Mar. 23, 2011
(65)
EP
OTHER PUBLICATIONS
Jul. 14,2011
GPNE Corp. v. Time Warner Cable, Inc., Comcast Cable Communi
cations LLC and Charter Communication Inc., U.S. District Court
Related U.S. Application Data
Continuation of application No. 11/781,859, ?led on
Jul. 23, 2007, Which is a continuation of application
for Eastern District of Texas, 6:2007cv00060, Tyler, TX.
(Continued)
No. 11/668,922, ?led on Jan. 30, 2007, noW
abandoned, Which is a continuation of application No.
Primary Examiner * Zhiyu Lu
Assistant Examiner * Ayodeji Ayotunde
11/350,616, ?led on Feb. 8, 2006, noW Pat. No.
7,200,406, Which is a continuation of application No.
09/847,005, ?led on May 2, 2001, noW Pat. No.
7,031,716, Which is a continuation of application No.
09/594,662, ?led on Jun. 15, 2000, noW Pat. No.
6,282,406, Which is a continuation of application No.
09/259,417, ?led on Dec. 9, 1997, noW Pat. No.
6,108,520, Which is a continuation of application No.
08/608,629, ?led on Feb. 9, 1996, noW Pat. No.
5,729,827, Which is a division of application No.
08/264,973, ?led on Jun. 24, 1994, noW Pat. No.
(74) Attorney, Agent, or Firm * Fliesler Meyer LLP
(57)
ABSTRACT
A communication system is provided that includes a control
ler and a system to alloW ef?cient transmission of information
With a plurality of nodes. The information includes an align
ment signal provided from the controller to enable the nodes
to align their response signals. The information further
includes node identi?cation information. Once alignment and
identi?cation occur, nodes can then transmit packet data to
the controller.
5,542,115.
(51)
9/1988
(Continued)
Prior Publication Data
US 2011/0170677 A1
(60)
0 282 028 A2
Int. Cl.
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12 Claims, 13 Drawing Sheets
(2006.01)
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Moore
Bose
Rottger
Smith
Friedes
Townsend
Goldman
Lucas
Zabarsky
Sebestyn
Gaskill
Breeden
Tejima
Akashi
Bhagat
Grauel
Siwiak
Siwiak
Fascenda
Schaeffer
DeLuca
Siwiak
Hara
Andros
Siwiak
Felix
Siwiak
Krolopp
SchWendeman
Gutrnan
Sojka
Bhagat
Andros
Sardana
Lynk
Goldstein
May
Harrison
DeLuca
Gravel
Ostlund
Patsiokas
Mittel
IchikaWa
Benner
Metroka
Paneth
Kallin
Andros
Gerhardt
Moore
D’Amico
J asinski
Freeburg
J asinski
Crisler
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SchWendeman
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Siwiak
J asinski
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Frank
5,297,143
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5,301,356
5,303,393
5,315,586
5,335,356
5,341,397
5,353,285
5,353,332
5,361,399
5,363,374
5,363,427
5,367,524
5,373,503
5,377,192
5,384,777
5,396,496
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5,400,331
5,404,355
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5,461,627
5,463,675
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5,471,474
5,471,670
5,481,537
5,485,463
5,485,464
5,487,174
5,491,469
5,499,243
5,502,721
5,504,803
5,521,925
5,524,278
5,539,730
5,542,115
5,544,222
5,548,631
5,555,266
5,559,804
5,594,949
5,603,081
5,613,198
5,613,207
5,613,212
5,625,878
5,625,880
5,627,881
5,634,193
5,642,405
5,680,398
5,689,807
5,717,688
5,729,827
5,778,316
5,870,426
5,901,357
5,915,219
5,956,643
6,108,520
6,122,527
6,212,176
6,243,071
6,252,868
6,282,406
6,393,002
6,430,417
6,434,406
6,481,634
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Fridrich
Gilbert
Kay
Bodin
Noreen
Charvillat
Andersson
Gudmundson
Van Der Plas
Raith
Linqui st
Zein Al Abedeen
Ekstrom
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Chen
Goodings
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Rappaport
Rypinski
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Hess
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Yamada
Merakos
Williams
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Robinson
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Andersson
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Fischer
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Wong
Belanger
Wong
Persson
Yokev
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Poyhonen
Benveniste
Wong
Robinson
Andersson
Shwarts
Diachina
Wong
Paneth
Raith
Lee
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Wong
US 8,311,020 B2
Page 3
7,200,406 B2
7,209,748 B2
7,212,825 B2
4/2007 Wong
4/2007 Wong
5/2007 Wong
FOREIGN PATENT DOCUMENTS
EP
EP
EP
EP
EP
JP
JP
JP
JP
JP
JP
JP
JP
JP
JP
JP
W0
W0
W0
W0
0 344 624
0 344 624
0 522 772
0 544 457
0 553 952
58-088938
03-104429
03-140024
04-114521
04-252526
05-63623
05-130021
05-136823
05-268155
05-327580
06-77963
WO 92/09148
WO 92/17956
WO 94/09597
WO 94/24786
A2
A3
A2
A2
A1
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Defendants’ Preliminary Invalidity Contentions ?led Feb. 15, 2012 in
GPNE Corp. v. Amazon. com, Inc., et aLiagainst the asserted claims
ofU.S. Patent Nos. 7,555,267, 7,570,954, and 7,792,492.
Exhibit A1 to Defendants’ Preliminary Invalidity ContentionsiIn
validity Chart for US. Patent No. 7,5 5 5,267 based on U. S. Patent No.
5,555,266 (“BuchholZ”) in view of US. Patent No. 5,465,401
(“Thompson”).
Exhibit A2 to Defendants’ Preliminary Invalidity ContentionsiIn
validity Chart for US. Patent No. 7,555,267 based on Terminal
Access Control System (TACS).
Exhibit A3 to Defendants’ Preliminary Invalidity ContentionsiIn
validity Chart for U. S. Patent No. 7,5 55,267 based on GSM Standard.
Exhibit A4 to Defendants’ Preliminary Invalidity ContentionsiIn
validity Chart for US. Patent No. 7,555,267 based on PCT Applica
tion WO 94/09597 to Talarmo (“Talarmo PCT Application”).
Exhibit As to Defendants’ Preliminary Invalidity ContentionsiIn
validity Chart for US. Patent No. 7,5 5 5,267 based on U. S. Patent No.
5,420,851 to Seshadri (“Seshadri”).
Exhibit A6 to Defendants’ Preliminary Invalidity ContentionsiIn
validity Chart for US. Patent No. 7,5 5 5,267 based on U. S. Patent No.
5,717,688 to Belanger (“Belanger”).
Exhibit A7 to Defendants’ Preliminary Invalidity ContentionsiIn
validity Chart for US. Patent No. 7,5 5 5,267 based on U. S. Patent No.
OTHER PUBLICATIONS
5,134,615 to Freeburg (“Freeburg”).
Exhibit A8 to Defendants’ Preliminary Invalidity ContentionsiIn
GPNE Corp. v. Samsung Telecom America LP, LG Electronics,
MobilecommUSA, Inc., HTC America, Inc., US. District Court for
Eastern District of Texas, 6:2007cv00059, Tyler, TX.
validity Chart for US. Patent No. 7,5 5 5,267 based on U. S. Patent No.
Cisco Systems, Inc., Scienti?c Atlanta Inc., Arris Group Inc.,
validity Chart for US. Patent No. 7,5 5 5,267 based on U. S. Patent No.
Thomson, Inc., v. GPNE Corp., District Court for District of Dela
ware, CA 07-671 (SLR).
Defendant Samsung Telecommunications America, LLC’ s Invalidity
Contentions ?led Oct. 8, 2007 in the United States District Court for
the Eastern District of Texas Court Case No. 6:07-cv-59.
Draft Recommendation GSM 04.08i“Mobile Radio Interface
5,373,503 to Chen (“Chen”).
Exhibit A10 to Defendants’ Preliminary Invalidity Contentionsi
Layer 3 Speci?cation,”Version 1.0.0, Nov. 1987.
Draft Recommendation GSM 05.02i“European digital cellular
5,142,533 to Crisler (“Crisler”).
Exhibit A9 to Defendants’ Preliminary Invalidity ContentionsiIn
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
No. 5,603,081 to Raith (“Raith”).
Exhibit A11 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
No. 4,736,371 (“Tejima”).
Exhibit A12 to Defendants’ Preliminary Invalidity Contentionsi
telecommunications system (phase 1); Multiplexing and Multiple
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
Access on the Radio Path,” European Telecommunications Standards
Institute, Feb. 1992.
Recommendation GSM 04.07i“Mobile Radio Interface Signalling
No. 5,239,677 to Jasinski (“Jasinski”).
Exhibit A13 to Defendants’ Preliminary Invalidity Contentionsi
Layer 34General Aspects,” v.3.3.2, Jan. 1990.
No. 5,299,198 to Kay (“’198 patent”).
GSM 04.07 Version 3.3.3i“Mobile Radio Interface Signalling
Exhibit A14 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
Layer 3iGeneral Aspects,” Technical Speci?cation, European Tele
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
communications Standards Institute, Feb. 1992.
Recommendation GSM 04.08, v. 3.13.0, “European digital cellular
No. 4,815,073 (“’073 Patent”).
telecommunications system (phase 1); Mobile radio interface layer 3
speci?cation,” Interim European Telecommunication Standardi2"d
Final Draft, pr I-ETS 300 022, Feb. 1992.
Draft Status ReportiDraft Recommendation GSM 04.08 v.1.0.0,
Dec. 7-10, 1987.
GSM doc (87) 143i“Status Report ofWP3,” Dec. 10, 1987, pp. 1-6.
Exhibit AiSamsung Telecommunications America’s First Supple
mental Invalidity ContentionsiClaim ChartiMobitex Interface
Speci?cation (Mobitex) Against the Asserted Claim of the ’406
Exhibit A15 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
No. 5,677,909 to Heidi (“’909 Heidi Patent”).
Exhibit A16 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
No. 5,422,656 to Allard (“Allard”).
Exhibit A17 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
No. 5,210,771 to Schaeffer (“Schaeffer”).
Exhibit A18 to Defendants’ Preliminary Invalidity Contentionsi
Patent.
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
Exhibit BiSamsung Telecommunications America’s First Supple
No. 5,068,916 (“Harrison”).
mental Invalidity ContentionsiClaim ChartiUS. Patent No.
5,103,445 (Ostlund) Against the Asserted Claim of the ’406 Patent.
Kong, I., Lindsey, L., “CableNet: A Local Area Network Reservation
Exhibit A19 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,555,267 based on the Nokia
2110 operated on a GSM network.
System,” 24”‘ IEEE Computer Society International Conference,
Exhibit A20 to Defendants’ Preliminary Invalidity Contentionsi
Feb. 22-25, 1982, pp. 182-186.
Mouly, Michel, et al., The GSM System for Mobile Communica
No. 5,172,375 (“Kou”) in view of US. Patent No. 5,197,125
tions, Cell & Sys., 1992, pp. 46-47, 66-67, 90-91, 94-97, 192-193,
196-197, 320-323, 354-355, 366-369, 372-379, 384-385, 388-391,
Exhibit A21 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
(“Engel”).
424-427.
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
Bertsekas, Dimitri, et al., “Data Networks,” pp. 312-317 (Prentice
No. 4,736,371 (“Tejima”) in view of US. Patent No. 5,197,125
Hall, Inc., Upper Saddle River, New Jersey 07458, 2'” ed. 1992).
(“Engel”).
Mouly, Michel, et al., The GSM System for Mobile Communica
tions, Cell & Sys., 1992, pp. 45, 186-259, 272-278, 396-412.
ETSI STC SMG3/SMG4 (Telia Research): “GPRSiA Proposal
Exhibit A22 to Defendants’ Preliminary Invalidity Contentionsi
No. 5,363,374 (“Abedeen”) in view of US. Patent No. 5,197,125
Based on Packet Radio”. SMG4, Tdoc 49, 1994.
(“Engel”).
Invalidity Chart for US. Patent No. 7,555,267 based on US. Patent
US 8,311,020 B2
Page 4
Exhibit A23 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit B23 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,555,267 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
No. 5,303,393 (“Noreen”).
No. 5,363,374 (“Aberdeen”) in view of U.S. Patent No. 5,197,125
Exhibit B1 to Defendants’ Preliminary Invalidity Contentionsiln
(“Engel”).
validity Chart for U. S. Patent No. 7, 570,954 based on U. S. Patent No.
Exhibit B24 to Defendants’ Preliminary Invalidity Contentionsi
5,555,266 (“BuchholZ”) in view of U.S. Patent No. 5,197,125
(“Engel”), U.S. Patent No. 5,297,143 (“Fridrich”), and U.S. Patent
No. 4,736,371 (“Tejima”) in view of U.S. Patent No. 5,197,125
No. 5,465,401 (“Thompson”).
Exhibit B2 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U.S. Patent No. 7,570,954 based on Terminal
Access Control System (TACS).
Exhibit B3 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U.S. Patent No. 7,570,954 based on GSM Standard.
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
(“Engel”).
Exhibit B25 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
No. 5,303,393 (“Noreen”).
Exhibit C1 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U.S. Patent No. 7,792,492 based on U. S. Patent No.
Application.
5,555,266 (“BuchholZ”) in view of U.S. Patent No. 5,197,125
(“Engel”), U.S. Patent No. 5,465,401 (“Thompson”), Terminal
Access Control System (TACS).
Exhibit C2 to Defendants’ Preliminary Invalidity Contentionsiln
Exhibit B5 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U.S. Patent No. 7,792,492 based on Terminal
validity Chart for U. S. Patent No. 7, 570,954 based on U. S. Patent No.
Access Control System (TACS).
5,420,851 to Seshadri (“Seshadri”).
Exhibit B6 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U. S. Patent No. 7,792,492 based on GSM Standard.
Exhibit B4 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U.S. Patent No. 7,570,954 based on PCT Talarmo
Exhibit C3 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U. S. Patent No. 7, 570,954 based on U. S. Patent No.
Exhibit C4 to Defendants’ Preliminary Invalidity Contentionsiln
5,717,688 to Belanger (“Belanger”).
validity Chart for U.S. Patent No. 7,792,492 based on PCT Talarmo
Exhibit B7 to Defendants’ Preliminary Invalidity Contentionsiln
Application.
validity Chart for U. S. Patent No. 7, 570,954 based on U. S. Patent No.
Exhibit C5 to Defendants’ Preliminary Invalidity Contentionsiln
5,134,615 to Freeburg (“Freeburg”).
validity Chart for U.S. Patent No. 7,792,492 based on U. S. Patent No.
Exhibit B8 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U. S. Patent No. 7, 570,954 based on U. S. Patent No.
5,142,533 to Crisler (“Crisler”).
Exhibit B9 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U. S. Patent No. 7, 570,954 based on U. S. Patent No.
5,373,503 to Chen (“Chen”).
Exhibit B10 to Defendants’ Preliminary Invalidity Contentionsi
5,717,688 to Belanger (“Belanger”).
Exhibit C6 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U.S. Patent No. 7,792,492 based on U. S. Patent No.
5,134,615 to Freeburg (“Freeburg”).
Exhibit C7 to Defendants’ Preliminary Invalidity Contentionsiln
validity Chart for U.S. Patent No. 7,792,492 based on U. S. Patent No.
5,142,533 to Crisler (“Crisler”).
Exhibit C8 to Defendants’ Preliminary Invalidity Contentionsiln
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
validity Chart for U.S. Patent No. 7,792,492 based on U. S. Patent No.
No. 5,603,081 to Raith (“Raith”).
Exhibit B11 to Defendants’ Preliminary Invalidity Contentionsi
5,373,503 to Chen (“Chen”).
Exhibit C9 to Defendants’ Preliminary Invalidity Contentionsiln
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
validity Chart for U.S. Patent No. 7,792,492 based on U. S. Patent No.
No. 4,736,371 (“Tejima”).
5,603,081 to Raith (“Raith”).
Exhibit C10 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit B12 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 5,239,677 to Jasinski (“Jasinski”).
Exhibit B13 to Defendants’ Preliminary Invalidity Contentionsi
No. 4,736,371 (“Tejima”).
Exhibit C11 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 5,299,198 to Kay (“’ 198 patent”).
No. 5,239,677 to Jasinski (“Jasinski”).
Exhibit C12 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit B14 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on the Mobitex
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
Interface Speci?cation.
No. 5,299,198 to Kay (“’198 Patent”).
Exhibit B15 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit C13 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on the AMPS
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
System.
No. 5,420,851 to Seshadri (“Seshadri”).
Exhibit C14 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit B16 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 4,815,073 (“The ’073 Patent”).
No. 4,815,073 (“’073 Patent”).
Exhibit B17 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit C15 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 5,677,909 to Heidi (“’909 Heidi Patent”).
Exhibit B18 to Defendants’ Preliminary Invalidity Contentionsi
No. 5,677,909 to Heidi (“’909 Heidi Patent”).
Exhibit C16 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 5,422,656 to Allard (“Allard”).
Exhibit B19 to Defendants’ Preliminary Invalidity Contentionsi
No. 5,422,656 to Allard (“Allard”).
Exhibit C17 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 5,210,771 to Schaeffer (“Schaeffer”).
Exhibit B20 to Defendants’ Preliminary Invalidity Contentionsi
No. 5,210,771 to Schaeffer (“Schaeffer”).
Exhibit C18 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 5,068,916 (“Harrison”).
No. 5,068,916 (“Harrison”).
Exhibit B21 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit C19 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on the Nokia
Invalidity Chart for U.S. Patent No. 7,792,492 based on the Nokia
2110 operated on a GSM network.
2110 operated on a GSM network.
Exhibit B22 to Defendants’ Preliminary Invalidity Contentionsi
Exhibit C20 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for U.S. Patent No. 7,570,954 based on U.S. Patent
Invalidity Chart for U.S. Patent No. 7,792,492 based on U.S. Patent
No. 5,172,375 (“Kou”) in view of U.S. Patent No. 5,197,125
No. 5,172,375 (“Kou”) in view of U.S. Patent No. 5,197,125
(“Engel”).
(“Engel”).
US 8,311,020 B2
Page 5
Exhibit C21 to Defendants’ Preliminary Invalidity Contentionsi
Invalidity Chart for US. Patent No. 7,792,492 based on US. Patent
Walke, B., et al., “The Performance of CELLPAC: A Packet Radio
Protocol Proposed for the GSM Mobile Radio Network,” MRC,
No. 4,736,371 (“Tejima”) in view of US. Patent No. 5,197,125
Mobile Radio Conference 1991, Nov. 13-15, 1991, Acropolis, Nice,
(“Engel”).
France.
Exhibit C22 to Defendants’ Preliminary Invalidity Contentionsi
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No. 5,363,374 (“Abedeen”) in view of US. Patent No. 5,197,125
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Invalidity Chart for US. Patent No. 7,792,492 based on US. Patent
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US. Patent
Nov. 13, 2012
US 8,311,020 B2
Sheet 4 0f 13
PAGER TRANSMWTER PROGRAM FLOW CHART
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US. Patent
Nov. 13, 2012
Sheet 5 0113
US 8,311,020 B2
FIG. 5
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US. Patent
Nov. 13, 2012
Sheet 6 0113
US 8,311,020 B2
FIG. 6
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CENTRAL COMPUTER YRANSMITTER
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,
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GIVE P, PERM1SS1ON TO TRANSMiT1STEP 136)
1
2 P, REQUEST TO TRANSM1T1STEP 214;
U.S. Patent
Nov. 13, 2012
Sheet 7 0113
US 8,311,020 B2
FIG. 7
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man POWER
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US. Patent
NOV. 13, 2012
US 8,311,020 B2
Sheet 8 0f 13
FIG. 8
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US. Patent
Nov. 13, 2012
Sheet 9 0113
US 8,311,020 B2
FIG. 9
MESSAGE
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P, ALIGN rrs CLUCK mm 5, FROM 6, {STEP 504)
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s, TELLS PAGER TO mau'mrv ITSELF {STEP 616)
P, seams R‘S an mFoRMmoN ON 1:,(5TEP 515)
NEW ‘me SLO? AND NEW FREQUENCiES
INFORMATION GWEN ON G2 FROM 52 {STEPS 532 AND 634)
US. Patent
Nov. 13, 2012
Sheet 10 0113
US 8,311,020 B2
PAGER CHANNEL SWlTCHING FLOW CHART
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FIG. 10
US. Patent
Nov. 13, 2012
800
Sheet 11 0113
US 8,311,020 B2
FIG. 1 1
% START ) CENTRAL STATION SWITCHING ENABLING
GET uIIIIsE ID
IFORMATIO
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532
US. Patent
Nov. 13, 2012
Sheet 12 0f 13
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US 8,311,020 B2
US. Patent
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Nov. 13, 2012
Sheet 13 0113
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US 8,311,020 B2
US 8,311,020 B2
1
2
COMMUNICATION SYSTEM ALLOWING
NETWORK NODES TO EFFICIENTLY
ESTABLISH COMMUNICATIONS WITH A
CONTROLLER
station. A ?rst local frequency carries a local clock; a second
local frequency carries communications packets from the
central control station to paging units; a third local frequency
carries communication packets from the pager units to the
central control station; and a fourth local frequency carries a
status or request signal from the paging units to the central
control station. Transmissions on the fourth local frequency
CLAIM OF PRIORITY
This application is a continuation of US. patent applica
are in accordance with a time divided slot allocation among
tion Ser. No. 11/781,859 ?led on Jul. 23, 2007, which is a
pager units accessing the central control station.
For a two-way paging system having a plurality of central
control stations servicing a corresponding plurality of cells, a
continuation of US. patent application Ser. No. 11/668,922
?led on Jan. 30, 2007, which is a continuation of US. patent
application Ser. No. 11/350,616 ?led on Feb. 8, 2006, now
total of eight frequencies are utiliZed within any one cell. Four
US. Pat. No. 7,200,406, issued Apr. 3, 2007, which is a
continuation of US. patent application Ser. No. 09/847,005
?led on May 2, 2001, now US. Pat. No. 7,031,716, issued
Apr. 18, 2006, which is a continuation of US. patent appli
of the utiliZed frequencies are the local frequencies (which
may differ from cell to cell), and four of the utiliZed frequen
cies are lower power common frequencies or switching fre
quencies which are used to switch or hand-off a pager unit
cation Ser. No. 09/594,662 ?led on Jun. 15, 2000, now US.
Pat. No. 6,282,406, issuedAug. 28, 2001, which is a continu
ation ofU.S. patent application Ser. No. 09/259,417, ?led on
Dec. 9, 1997, now US. Pat. No. 6,108,520, issued Aug. 22,
2000, which is a continuation of US. patent application Ser.
traveling from one cell to another.
BRIEF DESCRIPTION OF THE DRAWINGS
20
The foregoing and other objects, features, and advantages
No. 08/608,629 ?led on Feb. 29, 1996, now US. Pat. No.
5,729,827, issued Mar. 17, 1998, which is a divisional ofU.S.
of the invention will be apparent from the following more
patent application Ser. No. 08/264,973, ?led Jun. 24, 1994,
particular description of preferred embodiments as illustrated
in the accompanying drawings in which reference characters
now US. Pat. No. 5,542,115, issued Jul. 30, 1996, entitled
“PAGING METHOD AND APPARATUS,” naming Wong, et
al. as inventors, all of these applications being incorporated
by reference herein in their entirety.
25
refer to the same parts throughout the various views. The
drawings are not necessarily to scale, emphasis instead being
placed upon illustrating the principles of the invention.
BACKGROUND
30
1. Technical Field
FIG. 1 is a schematic view of a central control station
included in a paging system of an embodiment of the inven
tion.
FIG. 2 is a schematic view of a pager unit included in a
This invention pertains to communications paging, and
particularly to two-way paging method and apparatus.
2. Related Art
Over the last several decades, pagers have proven to be
paging system for use with the central control station of FIG.
35
important communication devices for contacting remotely
situated personnel. Whereas primitive pagers provided pri
marily only a tonal and/or vibratory output, more modern
pagers have enhanced output capabilities such as message
bearing alphanumeric displays.
40
Paging systems have historically been one-way systems.
the pager. Prior art attempts to provide two-way communica
See, for example, US. Pat. No. RE 33,417 to Bhagat, et al.
(which combines an entire radio pager and radiotelephone
linked through an automatic dialer) and US. Pat. No. 5,117,
449 to Metroka, et. al. (which purports to combine paging and
cellular radiotelephone functions in a single unit).
Some pagers have the capability of providing an acknowl
45
FIG. 8 is a schematic view of a pager unit included in a
50
55
Typically such ack-back systems involve a complex acknowl
edgement transmission scheme, involving numerous fre
representing switching operations for the paging system of
the second embodiment of the invention.
FIG. 10 is a ?owchart depicting steps executed by the pager
unit of FIG. 8 in connection with a channel switching opera
tion.
FIG. 11 is a ?owchart depicting steps executed by the
central control station of FIG. 7 in connection with a channel
switching operation.
quencies or frequency sub-bands. Hand-off of the pager, as
the pager travels between differing geographic regions or
“cells” served by differing central stations, becomes techni
cally cumbersome when multitudinous frequencies are
FIG. 7 is a schematic view of a central control station
included in a paging system of a second embodiment of the
invention.
paging system for use with the central control station of FIG.
7.
FIG. 9 is a hybrid schematic view and timing diagram for
edgment or response to a paging signal. In some such “ack
back” systems, a user operates a reply input device (e.g., a
toggle switch, pushbutton switch, or keyboard) when paged.
FIG. 6 is a timing diagram re?ecting communications
between the central control station of FIG. 1 and the pager
unit of FIG. 2.
That is, the user receives a paging message from a central
terminal but has no way of responding to that message with
tion capabilities for a pager have included efforts to connect
the pager to a telephone (e.g., to a mobile radio telephone).
FIG. 3 is a ?owchart depicting steps executed by the central
control station of FIG. 1.
FIG. 4 is a ?owchart depicting steps executed by the pager
unit of FIG. 2 when in a transmit mode.
FIG. 5 is a ?owchart depicting steps executed by the pager
unit of FIG. 2 when in a receive mode.
FIG. 12 is a schematic view of a format of a communica
tions packet utiliZed with embodiments of the invention.
60
FIG. 13 is a schematic view illustrating a time divided slot
allocation technique according to the invention.
involved.
DETAILED DESCRIPTION
SUMMARY
65
A two-way paging system utiliZes four local frequencies
for transmissions between pager units and a central control
FIG. 1 shows a central control station 20 according to a ?rst
embodiment of the invention; FIG. 2 shows a paging unit 22
suitable for use with central control station 20.
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