Electrical computers and digital data processing systems: input/ – Intrasystem connection – Protocol
Reexamination Certificate
1998-09-11
2001-01-09
Sheikh, Ayaz R. (Department: 2781)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Protocol
C710S104000, C710S106000, C713S600000
Reexamination Certificate
active
06173347
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a method for transmitting system-specific data in a synchronous microprocessor system, and an arrangement for transmitting the system-specific data in the synchronous microprocessor system.
A microprocessor system is the functional unit consisting of a microprocessor, a memory, and a control unit for peripheral equipment, said system being respectively built into a multiplicity of technical apparatuses. The microprocessor is thereby a universally applicable and freely programmable functional unit designated the central unit (Central Processing Unit CPU), and which contains the complete control and computing unit of the microprocessor system and is housed on or more integrated circuits (chip). The term peripheral equipment refers to such devices as can be connected to the microprocessor. The peripheral apparatuses of the microprocessor are divided, according to their function, into peripheral memory equipment, input/output peripheral equipment, and peripheral control equipment. The peripheral memory equipment thereby includes devices provided for the storage of extensive databases, e.g. magnetic layer storage units and magnetic bubble memories. The input/output peripheral equipment includes functional units for the input and output of data, e.g. printer, monitor, etc. The peripheral control equipment includes apparatuses that supply peripheral input/output equipment with control signals (apparatus management).
The microprocessor system indicated above is used for example in telecommunication terminal equipment of wireless telecommunication systems.
Wireless telecommunication systems of the type designated above are message systems with a remote data transmission path between a message source and a message sink for message processing and message transmission, in which
1) the message processing and message transmission can take place in a preferred direction of transmission (Simplex operation) or in both directions of transmission (duplex operation),
2) the message processing is analog or digital,
3) the message transmission via the remote data transmission path is wireless—e.g. according to various radio standards such as DECT, GSM, WACS or PACS, IS-54, PHS, PDC, etc. (cf. IEEE Communications Magazine, January 1995, pages 50-57; D. D. Falconer et al: “Time Division Multiple Access Methods for Wireless Personal Communications”).
“Message” is a higher-order term that stands both for the meaning content (information) and also for the physical representation (signal).
Signals can thereby represent e.g.
(1) images
(2) spoken words
(3) written words
(4) encrypted words or images.
FIG. 1
shows, as a representative of the large number of wireless telecommunication systems, a DECT/GAP system in which, according to the DECT/GAP standard (Digital European Cordless Telecommunication; cf. (1): Nachrichtentechnik Elektronik 42 (1992) January/February no. 1, Berlin, DE; U. Pilger “Struktur des DECT-Standards,” pp. 23 to 29 in connection with ETSI publication ETS 300175-1 . . . , Oct. 9, 1992; (2): Telcom Report 16 (1993), no. 1, J. H. Koch: “Digitaler Komfort f{umlaut over (u)}r schnurlose Telekommunikation—DECT-Standard eröffmet neue Nutzungsgebiete”, pages 26 and 27; (3): tec 2/93—Das technische Magazin von Ascom “Wege zur universellen mobilen Telekommunikation”, pages 35 to 42; Generic Access Profile; cf. ETSI Publication prETS 300444, April 1995, Final Draft, ETSI, FR), at a DECT/GAP base station BS, via a DECT/GAP air interface designed for the frequency range between 1.88 and 1.90 Ghz, a maximum of twelve connections according to the TDMA/FDMA/TDD method (Time Division Multiple Access/Frequency Division Multiple Access/Time Division Duplex) are set up parallel to DECT/GAP mobile parts MT1 . . . MT12. The number 12 results from a number “k” of time slots or, respectively, telecommunication channels provided for the duplex operation of a DECT/GAP system (k=12). The connections can thereby be internal and/or external. Given an internal connection, two mobile parts registered at the base station BS, e.g. the mobile part MT2 and the mobile part MT3, can communicate with one another. For the setup of an external connection, the base station BS is connected with a telecommunication network TKN, e.g. in line-bound form via a telecommunication terminal unit TAE, or, respectively, a private branch exchange NStA, with a line-bound telecommunication network, or, according to WO 95/05040, in wireless form as a repeater station with a higher-order telecommunication network. Given the external connection, with a mobile part, e.g. with the mobile part MT1, it is possible to communicate with a subscriber in the telecommunication network TKN via the base station BS, the telecommunication terminal unit TAE, or, respectively, the private branch exchange NStA. If, as in the case of the Gigaset 951 (Siemens cordless telephone, cf. Telcom Report 16, 1993, no. 1, pages 26 and 27), the base station BS has only one terminal to the telecommunication terminal unit TAE or, respectively, to the private branch exchange NStA, then only one external connection can be set up. If, as in the case of the Gigaset 952 (Siemens cordless telephone, cf. Telcom Report 16, 1993, no. 1, pages 26 and 27), the base station BS has two terminals to the telecommunication network TKN, then in addition to the external connection with the mobile part MT1 a further external connection from a wire-bound telecommunication terminal apparatus TKE connected to the base station BS is possible. In principle, it is thereby also conceivable that a second mobile part, e.g. the mobile part MT12, instead of the telecommunication terminal apparatus TKE, uses the second terminal for an external connection. According to the subsequently published German Patent Application 195 45 762.5, the mobile parts MT1 . . . MT12 are operated in manual operation (normal operation) with a battery or an accumulator, and in hands-free operation are operated in connection with a charge station connected to a voltage network SPN. The base station, fashioned as a wireless small switching installation, is connected to the voltage network SPN via a network terminal apparatus NAG.
FIG. 2
shows, on the basis of the reference Components 31 (1993), no. 6, pages 215-218; S. Althammer, D. Br{umlaut over (u)}ckmann: “Hochoptimierte IC's f{umlaut over (u)}r DECT-Schnurlostelefone,” the circuit design of the base station BS and of the mobile part MT. The base station BS and the mobile part comprise, according to the reference, a radio part FKT with an antenna ANT allocated for the transmission and reception of radio signals, a signal processing means SVE, and a central control unit ZST, connected with one another in the manner shown. In the radio part FKT, essentially the known means, such as transmitter SE, receiver EM, and synthesizer SYN, are contained. Among other things, a coding/decoding means CODEC is contained in the signal processing means SVE. The central control unit ZST comprises, both for the base station BS and also for the mobile part MT, a microprocessor &mgr;P, having a program module PGM constructed according to the OSI/ISO layer model, a signal control part SST, and a digital signal processor DSP, connected with one another in the manner shown. Of the layers defined in the layer model, only the first four layers, immediately essential for the base station BS and the mobile part MT, are shown. The signal control part SST is fashioned in the base station BS as a time switch controller TSC and in the mobile part MT as a burst mode controller BMC. The essential difference between the two signal control parts TSC, BMC is that the base-station-specific signal control part TSC takes over additional switching functions in relation to the mobile-part-specific signal control part BMC. The microprocessor &mgr;P is, according to the definition indicated above, a component of a microprocessor system.
The principle of the functioning of the switching units indicated above is described for example in the above-cit
Phan Raymond N
Schiff & Hardin & Waite
Sheikh Ayaz R.
Siemens Aktiengesellschaft
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