Telecommunications – Radiotelephone system – Including private cordless extension system
Reexamination Certificate
1999-04-07
2002-05-14
Trost, William (Department: 2683)
Telecommunications
Radiotelephone system
Including private cordless extension system
C455S426100, C455S451000, C455S452200, C370S424000, C370S463000, C370S469000, C370S493000
Reexamination Certificate
active
06389292
ABSTRACT:
BACKGROUND OF THE INVENTION
In message systems with a message transmission link between a message source and a message sink, transmission and reception devices are employed for the message processing and transmission, whereby
1) the message processing and message transmission can ensue in a privileged transmission direction (simplex mode) or in both transmission directions (duplex mode),
2) the message processing is analog or digital,
3) the message transmission via the long-distance transmission link is wire-bound or ensues wirelessly on the basis of various message transmission methods FDMA (Frequency Division Multiple Access) and/or CDMA (Code Division Multiple Access)—for example according to radio standards such as DECT, GSM, WACS or PACS, IS-54, PHS, PDC, etc. (see IEEE Communications Magazine, January 1995, pages 50 through 57; D. D. Falconer et al., “Time Division Multiple Access Methods for Wireless Personal Communication”)
“Message” is a higher-ranking term that stands both for the signification (information) as well as for the physical representation (signal). Despite the same signification of a message—i.e. the same information—, different signal forms can occur. Thus, for example, a message relating to a subject matter can be transmitted
(1) in the form of an image,
(2) as spoken word,
(3) as written word,
(4) as encrypted word or image.
The transmission mode according to (1) . . . (3) is thereby normally characterized by continuous (analog) signals, whereas discontinuous signals (for example pulses, digital signals) usually arise given the transmission mode according to (4).
Proceeding from this general definition of a message system, the invention is directed to a method and telecommunication interface for the transmission of continuous and/or discontinuous data streams in a hybrid telecommunication system, particularly an “ISDN⇄DECT-specific RLL/WLL” system.
Standing for the multitude of hybrid telecommunication systems,
FIG. 1
, proceeding from the publications “
Nachrichtentechnik Elektronik, Berlin
45 (1995) No. 1, pages 21 through 23 and No. 3, pages 20 and 30” as well as
IEE Colloquium
1993, 173; (1993), pages 29/1-29/7; W. Hing, F. Halsall, “
Cordless access to the ISDN basic rate service”
, shows an “ISDN⇄DECT-specific RLL/WLL” telecommunication system IDRW-TS (Integrated Services Digital Network⇄Radio in the Local Loop/Wireless in the Local Loop) on the basis of a DECT/ISDN Intermediate Systems DIIS according to the
ETSI Publication prETS
300
xxx,
Version 1.10, September 1996, with an ISDN telecommunication sub-system I-TTS (see the publication “
Nachrichtentechnik Elektronik, Berlin
41-43, Part: 1 through 10, P1: (1991) No. 3, pages 99 through 102; P2: (1991) No. 4, pages 138 through 143; P3: (1991) No. 5, pages 179 through 182 and No. 6, pages 219 through 220; P4: (1991) No. 6, pages 220 through 222 and (1992) No. 1, pages 19 through 20; P5: (1992) No. 2, pages 59 through 62 and (1992) No. 3, pages 99 through 102; P6: (1992) No. 4, pages 150 through 153; P7: (1992) No. 6, pages 238 through 241; P8: (1993) No. 1, pages 29 through 33; P9: (1993) No. 2, pages 65 through 97 and (1993) No. 3, pages 129 through 135; P10: (1993) No. 4, pages 187 through 190”) and a DECT-specific RLL/WLL telecommunication sub-system RW-TTS.
The DECT/ISDN intermediate system DIIS or, respectively, the RLL/WLL telecommunication sub-system RW-TTS is thereby preferably based on a DECT/GAP system DGS (Digital Enhanced (previously: European) Cordless Telecommunication; see (1): Nachrichtentechnik Elektronik 42 (1992) January/February No. 1, Berlin, DE; U. Pilger, “Struktur des DECT-Standards” pages 23 through 29 in conjunction with the ETSI Publication ETS 300175-1 . . . 9, October 1992; (2): Telcom Report 16 (1993), No. 1, J. H. Koch, “Digitaler Komfort für schnurlose Telekommunikation—DECT-Standard eröffnet neue Nutzungsgebiete”, pages 26 and 27; (3): tec 2/93—the technical magazine of Ascom, “Wege zur universellen mobilen Telekommunikation”, pages 35 through 42; (4): Philips Telecommunication Review, Vol. 49, No. 3, September 1991, R. J. Mulder, “DECT, a universal cordless access system”; (5) WO 93/21719 (
FIGS. 1 through 3
with appertaining description)). The GAP standard (Generic Access Profile) is a subset of the DECT standard that has the job of assuring the interoperability of the DECT air interface for telephone applications (see
ETSI Publication prETS
3000444, April 1995).
Alternatively, the DECT/ISDN intermediate system DIIS or, respectively, the RLL/WLL telecommunication sub-system RW-TTS can also be based on a GSM system (Groupe Spéciale Mobile or Global System for Mobile communication; see Informatik Spektrum 14 (1991) June, No. 3, Berlin, DE; A. Mann, “Der GSM-Standard—Grundlage für europäische Mobilfunknetze”, pages 137 through 152). Instead, it is also possible in the framework of a hybrid telecommunication system that the ISDN telecommunication sub-system I-TTS is fashioned as GSM system.
Coming into consideration over and above this as further possibilities for the realization of the DECT/ISDN intermediate system DIIS or, respectively, RLL/WLL telecommunication sub-system RW-TTS or of the ISDN telecommunication sub-system I-TTS are the initially cited systems as well as future systems that are based on the known multiple access methods FDMA, TDMA, CDMA (Frequency Division Multiple Access, Time Division Multiple Access, Code Division Multiple Access) and hybrid multiple access methods formed therefrom.
The employment of radio channels (for example, DECT channels) in classic, line-bound telecommunication systems such as the ISDN is gaining in significance, particularly as viewed in front of the background of future, alternative network operators without their own complete wire network.
For example, ISDN services are to be made available to the ISDN subscriber at standard ISDN interfaces based on the wireless connection technology RLL/WLL (Radio in the Local Loop/Wireless in the Local Loop) given the RLL/WLL telecommunication sub-system RW-TTS, for example upon involvement of the DECT system DS (see FIG.
1
).
In the “ISDN⇄DECT-specific RLL/WLL” telecommunication system IDRW-TS of
FIG. 1
, a telecommunication subscriber (user) TCU (Tele-Communication User) has his terminal equipment TE (Terminal Endpoint; Terminal Equipment) linked into the ISDN world with the services available therein, for example via a standardized S-interface (S-BUS) the DECT/ISDN intermediate system DIIS (first telecommunication sub-system)—preferably DECT-specific and contained in the RLL/WLL telecommunication sub-system RW-TTS—fashioned as local message transmission loop, a further standardized S-interface (S-BUS), a network termination NT (Network Termination) and a standardized U-interface of the ISDN telecommunication sub-system I-TTS (second telecommunication sub-system).
The first telecommunication sub-system DIIS is composed essentially of two telecommunication interfaces, a first telecommunication interface DIFS (DECT Intermediate Fixed System) and a second telecommunication interface DIPS (DECT Intermediate Portable System) that are wirelessly connected to one another, for example via a DECT air interface. Due to the quasi location-bound first telecommunication interface DIFS, the first telecommunication subsystem DIIS forms the local message transmission loop defined above in this context. The first telecommunication interface DIFS contains a radio fixed part RFP (Radio Fixed Part), an interworking unit IWU
1
(InterWorking Unit) and an interface circuit INC
1
(INterface Circuitry) to the S-interface. The second telecommunication interface DIPS contains a radio portable part RPP (Radio Portable Part) and an interworking unit IWU
2
(InterWorking Unit) and an interface circuit INC
2
(INterface Circuitry) to the S-interface. The radio fixed part RFP and the radio portable part RPP thereby form the known DECT/GAP system DGS.
Based on the publication “
Nachrichtentechnik Elektronik
42 (1992) January/February, No. 1, Berlin, DE; U. Pilger, “
Struktu
Bell Boyd & Lloyd LLC
Nguyen Simon
Siemens Aktiengesellschaft
Trost William
LandOfFree
METHOD AND TELECOMMUNICATION INTERFACE FOR THE TRANSMISSION... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with METHOD AND TELECOMMUNICATION INTERFACE FOR THE TRANSMISSION..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and METHOD AND TELECOMMUNICATION INTERFACE FOR THE TRANSMISSION... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2823688