DE3609395C2 - - Google Patents
Info
- Publication number
- DE3609395C2 DE3609395C2 DE3609395A DE3609395A DE3609395C2 DE 3609395 C2 DE3609395 C2 DE 3609395C2 DE 3609395 A DE3609395 A DE 3609395A DE 3609395 A DE3609395 A DE 3609395A DE 3609395 C2 DE3609395 C2 DE 3609395C2
- Authority
- DE
- Germany
- Prior art keywords
- channel
- signal
- slot
- subscriber station
- ccu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0865—Independent weighting, i.e. weights based on own antenna reception parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0084—Formats for payload data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
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- H—ELECTRICITY
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1642—Formats specially adapted for sequence numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H04L1/188—Time-out mechanisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/20—TPC being performed according to specific parameters using error rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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- H—ELECTRICITY
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- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0647—Synchronisation among TDM nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/12—Reselecting a serving backbone network switching or routing node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/04—Scheduled access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Telephonic Communication Services (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Interface Circuits In Exchanges (AREA)
- Radio Transmission System (AREA)
Description
AKRONYM | |||
DEFINITION | |||
A/D | |||
Analog-Digital-Wandler | |||
ADPCM | Adaptive Differenzpulscodemodulation | ||
AGC | (Automatic Gain Control) Automatische Verstärkungsregelung | ||
AM | Amplitudenmodulation | ||
BCC | (Baseband Control Channel) Basisbandsteuerkanal | ||
BPSK | (Binary Phase Shift Keying Modulation) Binäre Phasenumtastung | ||
BW @ | (Bandwidth) Bandbreite @ | CCU | (Channel Control Unit) Kanalsteuerungseinheit |
CODEC | (Combined Coder and Decoder) Kombinierter Coder und Decoder | ||
DEMOD | Demodulator (Empfangsteil des Modems) | ||
D/A | Digital-Analog-Wandler | ||
dB | Dezibel | ||
DID | (Direct Inward Dial) Durchwahl | ||
DMA | (Direct Memory Access) Direkter Speicherzugriff | ||
DPSK | (Differential Phase Shift Keying Modulation) Differenzphasenumtastung | ||
DTMF | (Dual Tone Multi-Frequency signalling scheme) Zweiton-Mehrfrequenz-Signalbild | ||
ECL | (Emitter-coupled Logic) emittergekoppelte Logik | ||
FCC | (United States Federal Communications Commission) Amerikanische Bundeskommission für das Nachrichtenwesen | ||
FIFO | (First-in First-out Memory) Schiebespeicher | ||
FIR | (Finite-Duration Impulse-Response filter) Filter für Impulse endlicher Dauer | ||
Hz | Hertz (Schwingungen pro Sekunde) | ||
I | (In-phase) Gleichphasig | ||
IF | (Intermediate Frequency) Zwischenfrequenz | ||
Kbps | Kilobits pro Sekunde | ||
kHz | Kilohertz | ||
Km | Kilometer | ||
LSB | (Least Significant Bit) niedrigstwertiges Bit | ||
MDPSK | (Multi-phase Differential Phase Shift Keying modulation) Mehrphasen-Differenzphasenumtastung | ||
MHz | Megahertz | ||
MODEM | (Combined Modulator and Demodulator) kombinierter Modulator und Demodulator | ||
MPM | (Message Processing Module) Nachrichtenverarbeitungsmodul | ||
ms | Millisekunde | ||
OCXO | (Oven Controlled Crystal Oscillator) thermostatisierter Kristalloszillator | ||
PBX | (Private Branch Exchange or Automatic Switch) Nebenstellenanlage oder Wählvermittlungseinrichtung | ||
PCM | (Pulsed Coded Modulation) Pulscodemodulation | ||
PSN | (Public Switched Network) öffentliches Wählnetz | ||
PSTN | (Public Switched Telephone Network) öffentliches Fernsprechnetz oder andere Verbindungsträger (typisch Telco) | ||
Q | (Quadrature) 90°-Verschiebung | ||
QPSK | (Quadrature Phase Shift Keying Modulation) Phasenumtastung mit 90°-Verschiebung | ||
RBTG | (Ringback Tone Generator) Rückruftongenerator | ||
RAM | (Random Access Memory) Speicher mit direktem Zugriff | ||
RCC | (Radio Control Channel) Funksteuerungskanal | ||
RELP | (Residual Excited Linear Prediction) restliche angeregte Linearvoraussage | ||
RF | (Radio Frequency) Hochfrequenz | ||
RFU | (Radio Frequency Unit) Hochfrequenzeinheit | ||
RPU | (Remote-Connection Processor Unit) fernverbundene Zentraleinheit | ||
ROM | (Read-only Memory) Nur-Lese-Speicher | ||
RX | (Receive) Empfangen | ||
SHF | (Super High Frequency) superhohe Frequenz (3000 bis 30 000 MHz) | ||
SIN | (Subscriber Identification Number) Teilnehmer-Kennnummer | ||
SLIC | (Subscriber Loop Interface Circuit) Anpaßschaltung für digitalen Teilnehmeranschluß | ||
STIMU | (System Timing Unit) Systemzeittakteinheit | ||
STU | (Subscriber Station Telephone Interface Unit) Teilnehmerstation-Telefonschnittstelleneinheit | ||
SUBTU | (Subscriber Timing Unit) Teilnehmerzeittakteinheit | ||
TDM | (Time Division Multiplexing) Zeitteilen | ||
TDMA | (Time Division Multiple Access) Zeitteilung-Mehrfachzugriff | ||
Telco | (Telephone Company) Telefongesellschaft | ||
TX | (Transmit) Senden | ||
UHF | Utrahochfrequenz | ||
UTX-250 | Vermittlungseinrichtung, die Verarbeitung und Verknüpfung (interfacing) beinhaltet und die eine PBX sein kann, aber eine solche nicht notwendigerweise ist | ||
UW | (Unique Word) eindeutiges Wort | ||
VCU | (Voice Codec Unit) Sprachkodier- und -dekodiereinheit | ||
VCXO | (Voltage Controller Crystal Oscillator) spannungsgesteuerter Kristalloszillator | ||
VHF | (Very High Frequencies (30 bis 350 MHz)) |
- (1) Funksteuerkanal (RCC),
- (2) 4-ärer Sprachkanal, und
- (3) 16-ärer Sprachkanal.
- 1. Eine Höchstzahl (720) von Symbolen werden in jedem Systemrahmen übertragen. Kombinationen von den drei Schlitzarten können auf einer vorgegebenen Frequenz vereinigt sein, um dies zu erfüllen. Im Falle, daß nicht die ganze Kanalkapazität mit der Basisstationsrahmenübertragung (d. h. weniger als 720 Symbole werden in einem Rahmen übertragen) ausgefüllt ist, werden Null-Symbole eingeführt, um die 720-Symbolrahmenkapazität zu füllen. Ein Null-Symbol ist ein Symbol, das keine Sendeenergie hat.
- 2. Nur eine Frequenz in einer Mehrfrequenzbasisstation enthält eine RCC-Schlitzart. Nur ein RCC ist zu irgendeiner vorgegebenen Zeit im gesamten System wirksam. Die Frequenz auf der der RCC arbeitet, wird durch einen Systemeinleitungsparameter eingestellt und wird nur geändert, wenn dieser Frequenz aus irgendeinem Grund nicht verfügbar wird. Der RCC-Schlitz ist immer den ersten 180 Symbolen des Systemrahmens (als Schlitz 0 bezeichnet) zugeordnet.
- 3. Eine Basisstationsfrequenz kann in einem konstanten Sendemodus arbeiten. Die Teilnehmerstation sendet während nicht mehr als der Hälfte der gesamten Rahmenzeit. Die Teilnehmerstation sendet beim Tragen eines Gesprächs nur während 25% des Rahmens, wenn sie im RCC- oder 16-ären Sprachkanalmodus arbeitet. Die Teilnehmerstation sendet während 50% des Rahmens, wenn sie im 4-ären Sprachkanalmodus arbeitet. Eine Teilnehmerstation kann nur in einem Schlitz während irgendeines vorgegebenen Rahmens senden, wenn sie ein Gespräche trägt.
- 4. Alle 4-ären Sprachkanäle müssen die Übertragung auf der Symbolnummer 0 oder 360 beginnen. D. h., daß die erste Hälfte oder die zweite Hälfte eines Rahmens einen 4-ären Sprachkanal enthalten kann.
- 5. Übertragungen zwischen der Vorwärts- und Rückwärtsfrequenz werden so zugeordnet, daß die Rückwärtsnachricht eines vorgegebenen Schlitzes die Übertragung 180 Symbole nach der Übertragung der Vorwärtsfrequenznachricht beginnt. Dies schließt die Teilnehmerstation von dem Erfordernis aus, auf der Rückwärtsfrequenz zu senden, während sie gleichzeitig auf der Vorwärtsfrequenz empfängt.
- 1. Wenn am Anfang der Teilnehmerstation Energie zugeführt wird, beginnt das System und gibt die CCU 29 der Teilnehmerstation eine Folge von Befehlen an die Demodulatoren der Teilnehmerstationsmodems 30 a, 30 b, 30 c, die zu der RCC-Erfassung führen.
- 2. Der Demodulator eines jedes Modems 30 a, 30 b, 30 c wird zuerst in seine Lehrbetriebsart gesetzt. Während dieser Zeit lehrt das Modem seine Empfangsdigitalfilter die Merkmale der Empfangsanalogfilter. Die Analogfilter können sich aufgrund der Zeit und Temperaturschwankungen verschlechtern. Jedes Modem stellt seine Digitalfilterkoeffizienten während der Lehrbetriebsart so ein, daß diese Verschlechterungen kompensiert werden. Nachdem die CCU 29 den Zustand von den Demodulatoren der Modems 30 a, 30 b, 30 c, daß die Lehrfolge vollständig ist, empfängt, stellt die CCU die Empfangsfrequenz auf die Standard-RCC-Frequenz ein. Die CCU befiehlt dann dem Modem, die RCC-Frequenz anzunehmen und nach der charakteristischen Amplitudenmodulations"lücke" des RCC, die als AM-Loch bezeichnet wird, zu suchen. Das AM-Loch ist ein Zeitabschnitt von 1 99999 00070 552 001000280000000200012000285919988800040 0002003609395 00004 998806 Symbolen Dauer, wenn keine Energie während des Anfangs der RCC-Übertragung von der Basisstation übertragen wird. Alle anderen übertragenen Schlitzarten umfassen nur eine Acht-Symbol-"Null"-Übertragung. Die extra acht Symbole der Nullinformation identifizieren am Beginn eines Schlitzimpulsbündels dieses Impulsbündel eindeutig als den RCC.
- 3. Die erste Aktion der Demodulatoren der Modems 30 a, 30 b, 30 c besteht darin, eine grobe Frequenzerfassung durchzuführen. Das empfangene Signal wird in einer digitalen Phasenregelschleife verarbeitet, und der Teilnehmer-VCXO wird auf die Sendefrequnez der Basis station eingestellt. Nach dem Erfassen der Frequenz beginnt das Modem nach dem AM-Loch zu suchen. Das Mo dem sucht nach einer Folge von Symbolen mit kleiner oder keine Amplitude. Wenn diese Folge für eine An zahl von Rahmen ermittelt wurde, behauptet das Mo dem ein "taktmäßiges AM-Freigabesignal" (AM-strobe signal), um die CCU-Rahmenzeiteinteilungsschaltung auszulösen. Wenn keine AM-Lochfolge ermittelt wurde, gibt das Modem den Zustand an die CCU zurück, daß die RCC-Erfassung nicht erfolgreich war. Die CCU beginnt dann, alternative RCC-Frequenzen auf dieselbe Art und Weise herauszusuchen.
- 4. Nach der AM-Locherfasung führen die Demodulatoren der Modems 30 a, 30 b, 30 c eine verfeinerte Frequenzer fassung und anfängliche Bitsynchronisationseinstellun gen durch. Die ersten 60 Symbole des RCC-Steuerschlitzes sind ein festes Bitsynchronisationsmuster, das von dem Modem dazu verwendet wird, sich auf die Phase der Ba sisstation (Bitzeiteinteilung) aufzuschalten. An die ser Stelle ist der RX-Takt in der Teilnehmerstation nützlich als ein Symboltakt.
- 5. Die CCU 29 der Teilnehmerstation hat eine grobe Sym bolzeiteinteilungseinstellung über das AM-Freigabe signal von dem Modem erhalten. Nach der Frequenzer fassung und der Bitsynchronisation prüft die CCU die von dem Modem empfangenen Daten und sucht nach einem eindeutigen Wort der RCC. Dieses eindeutige Wort gibt dem Rahmen den absoluten Symbolzählbezug. Die CCU stellt dann ihre Symbolzähler so ein, daß die Zähler auf diesen Bezug ausgerichtet sind. Die Teilnehmer station ist nun mit der Übertragungssystem-Zeiteintei lung der Basisstation (sowohl Frequenz als auch Symbol zeiteinteilung) ausgerichtet und darauf aufgeschaltet.
- 6. Der verbleibende Teil der Systemzeiteinteilungserfassung bestimmt die Entfernungsverzögerung zwischen der Basis und den Teilnehmerstation. Diese Verzögerung kann in einem Bereich von 0 bis 1,2 Symbolzeiten (ein Weg) im System sein. Während eines Verbindungsaufbaus sendet die Teilnehmerstation eine Nachricht an die Basisstation über den RCC.
- 7. Das Basisstationsmodem 19 sucht immer nach neuen hin zustoßenden Teilnehmern. Diese Stoßimpulse können von 0 bis 3 Symbolzeiten von dem Hauptbezug-Rahmenbeginn der Basisstation verzögert werden. Während eines jeden Schlitzes suchen die Demodulatoren der Basisstations modems 30 a, 30 b, 30 c nach einer Übertragung auf dem Rückwärts-RCC-Schlitz. Alle Zeiteinteilungs- und Phasen informationen müssen während des ersten Teiles des Schlitzes (Einleitung) abgeleitet werden, da sonst der Schlitz und seine Information verloren sind. Es gibt keine zweite Möglichkeit, wenn ankommende Steuerschlitze empfangen werden. Die ankommenden Steuerschlitze werden nach dem Aloha-Warteschema auf dem RCC empfangen, daß unten beschrieben ist, wobei sie dieser Einzelangabe der Ereignisse folgend, die zur Systemerfassung füh ren.
- 8. Während eines jeden Schlitzes führt das Basisstations modem 19 eine schnelle AGC-Einstellung und Bitzeitein teilungsschätzung während der ersten 60 Symbole des Schlitzes durch. Die Empfangsteiltaktsignale werden eingestellt, um die Entfernungsverzögerung der Teil nehmerstation zu kompensieren. Die empfangenen Daten werden dann der CCU 18 der Basisstation zugeführt. Die CCU 18 ermittelt den Ort des eindeutigen Wortes im Strom und bestimmt die ganzzahlige Entfernungsverzöge rung zwischen der Basisstation und der Teilnehmersta tion. Das Modem 19 gibt AGC-Informationen an die CCU 18 für die Bestimmung der Teilnehmerstation-TX-Leistungsein stellungen ab. Das Modem 19 liefert der CCU 18 auch Ver bindungsqualitäts- und Teilzeitinformationen. Die Ver bindungsqualität wird dazu verwendet, zu bestimmen, ob eine Kollosion aufgetreten ist. Ein schlechtes Maß der Verbindungsqualität zeigt an, daß das Signal höchst wahrscheinlich wegen einer gleichzeitigen Übertragung durch mehr als einen Teilnehmer auf dem RCC-Schlitz kei ne gute Qualität hatte. Die Teilzeitschätzung ist der von dem Modem 19 berechnete Wert der Teilentfernungs verzögerung zwischen der Basis- und Teilnehmerstation.
- 9. Diese Leistungs- und Entfernungsverzögerungsinformation wird von der CCU 18 bearbeitet und an die RPU 20 ge schickt. Die RPU 20 formatiert diese Information in das RCC-Format und übermittelt diese Information an die Teilnehmerstation über den RCC-Steuerschlitz. Die CCU 18 der Teilnehmerstation entschlüsselt dieses Infor mation und macht die erforderlichen Einstellungen bei den Sendeleistungs- und Entfernungsverzögerungszählern sowohl im Modem 19 als auch in der CCU 18. Die CCU 18 bringt ihren eigenen ganzzahligen TX-Symbolrahmenzähler auf den neuesten Stand und bringt die TX-Taktteilver zögerungszähler des Modems auf den neuesten Stand.
- 10. Während der Anrufverbindung für eine Teilnehmerstation, weist die RPU 20 der Basisstation die Frequenz- und Schlitzzuordnung dem Sprachanruf zu. Diese Information wird über den RCC übermittelt, und die CCU 29 der Teilnehmerstation stellt die RX-Frequenz ein und be fiehlt dem Modem die Ermittlung des Sprachschlitzes zu beginnen. AGC-Zeiteinteilungs- und Frequenzinforma tionen werden von dem RCC-Betrieb zu dem Sprachkanal betrieb vorgetragen. Dies ist möglich, weil alle Fre quenzen in dem System auf denselben Rahmenzeitein teilungsbezug in der Basisstation synchronisiert sind.
- 11. Um die Zeiteinteilung der Teilnehmerstation genau ein zustellen, wird ein Verfeinerungsverfahren zu Beginn jeder Sprachverbindung durchgeführt. Während dieser Verfeinerungsphase ist die Verbindung über den Sprach kanal ähnlich der des Steuerkanals, der Modultions pegel ist BPSK, und die Nachricht sind im RCC-For mat, es wird aber keine "AM"-Loch in der Basisstation erzeugt; diese neuen RCC-Nachrichten werden nur zwi schen den CCUs 18 und 19 ausgetauscht. Das Modem 19 wird in der Basisstation in die Verfeinerungsbetriebs art und in der Basisstation in die Ausgangssteuerbe triebsart gesetzt. Während der Verfeinerung erzeugt die CCU 29 der Teilnehmerstation eine Nachricht, die zum größten Teil ein festes Bitmuster zusammen mit einem variablen Teil enthält, der die Annahme oder Zurückweisung der vorhergehenden Nachricht, die von der Basisstation empfangen wurde, anzeigt. Das Basis stationsmodem 19 gibt Zeiteinteilungs- und Leistungs einstellungen an die CCU 18 von jedem Schlitz, der empfangen wird, weiter. Leistungseinstellungen werden fortlaufend an die Teilnehmerstation geschickt. Zeit einteilungseinstellungen und Steuerinformationen, die die Fortsetzung oder Beendigung der Verfeinerungsbe triebsart anzeigen, werden nach einer Dauer von Be rechnungen ausgesandt. Die CCU 18 der Basisstation sammelt die Zeiteinteilungseinstellungen von dem Mo dem 19 für 30 Rahmen, berechnet einen Mittelwert und sendet dann die Einstellung an die CCU 29 der Teil nehmerstation. Dann wird eine weitere 30-Rahmenver feinerungsoperation von der CCD 18 der Basisstation durchgeführt, wobei die Resultate wieder an die CCU 29 der Teilnehmerstation gesandt werden. Die Verfeinerungs phase wird durch die CCU 18 der Basisstation beendet, und die Sprachverbindung wird begonnen, wenn die Ab weichungen der Einstellungen, die von dem Modem 19 empfangen werden, innerhalb eines annehmbaren Bereiches wie 1% sind oder die Verfeinerung einen Höchstzeit betrag gedauert hat.
- 1. Sie verarbeitet Teilnehmer-, CCU- und PBX-Nachrichten, die den Anrufsaufbau, den Anrufsabriß und die Kanal zuweisung steuern;
- 2. sie iniziert und unterhält eine Lese/Schreib-System- Datenbasis;
- 3. sie unterstützt einen Systemkontrollpult, der System abfragen und eine manuelle Systemsteuerung gestattet;
- 4. sie behandelt die BCC-Verknüpfungen, indem sie das Basisband-Steuerkanal-(BCC)-Gesprächsprotokoll über eine asynchrone serielle Schnittstelle von 9600 Baud unterhält;
- 5. sie behandelt die PBX-Schnittstelle, indem sie das PBX-Nachrichtenprotokoll unterhält; und
- 6. sie hält sich eine Transaktionsnotiz, die Diagnose- und Rohkostendaten liefert.
- 1. ACK wie erwartet; SEQ wie erwartet. Markiere unsere letzte übertragene Nachricht als bestätigt (wodurch wir eine neue Nachricht senden können). Verarbeite die neu angekommene Nachricht (bestätige sie in der nächsten Nachricht, die wir senden).
- 2. ACK wie erwartet; SEQ nicht wie erwartet. Markiere unsere letzte übermittelte Nachricht als bestätigt (wodurch wir eine neue Nachricht übermitteln können). Lege die neu angekommene Nachricht ab (bestätige sie nicht).
- 3. ACK nicht wie erwartet; SEQ wie erwartet. Wenn wir eine Nachricht übermittelt haben, die noch nicht be stätigt wurde, dann sende sie nochmals. Wenn wir nicht eine solche Nachricht haben, dann ist etwas am Ziel punkt falsch gelaufen und wir sollten zurückstellen wie unten beschrieben. Verarbeite die neu angekommene Nachricht.
- 4. ACK nicht wie erwartet; SEQ nicht wie erwartet. Unsere letzte Nachricht wurde nicht am Zielpunkt empfangen. Übermittle sie nochmals. Lege die neu angekommene Nach richt ab.
- (1) Zeichen werden von dem Bedienungstasten feld eingegeben.
- (2) Zeichen werden an den Bedienungsschirm aus gegeben.
- (3) Daten werden aus der Datenbasis heraus gesucht und in sie hineingeschrieben.
- (4) Nachrichten werden an die PBX, BCC- und Nach richtenverarbeitungsmodule geschickt.
- (1) Befehle, die Informationen von der Datenbasis anzei gen,
- (2) Befehle, die die Datenbasis abwandeln, und
- (3) Befehle, die Nachrichten senden.
- (1) Routinen um TTY-Einleitung zu stützen;
- (2) eine binäre Suchroutine für Teilnehmerrecher chen in der SIN-Tabelle;
- (3) Routinen und Tabellen, um die Frequenz-zu-CCU- Planung zu stützen;
- (4) Steuerung von Diagnoseanzeigeinformationen; und
- (5) Frequenzzuweisung.
"Extern-Hinaus" trifft zu, wenn eine Ursprungsteilnehmer station ein externes Telefon anruft;
"Intern-Hinaus" gilt, wenn eine Ursprungsteilnehmerstation eine andere Teilnehmerstation anruft;
"Intern-Herein" gilt, wenn eine Bestimmungsteilnehmer station von einer anderen Teilnehmerstation angerufen wird.
Der Modulationspegel des Teil nehmers, der eine Frequenz fordert, wird aus dieser Tabelle zusammen mit dem Modulations pegel des Ursprungsteilnehmers während eines Aufbaus eines internen Anrufs herausgezogen.
Die Schlitzzuordnung des Ur sprungsteilnehmers in einem Aufbau eines internen Anrufs muß herausgesucht werden.
Die Schlitzzuordnung des Teilnehmers, der einen Kanal anfordert, wird hier eingegeben.
Die Frequenzzuordnung des Teilnehmers, der einen Kanal anfordert, wird hier eingegeben.
Der Zustand eines Kanals wird überprüft, um die Verfügbarkeit festzustelllen.
Der Kanalzustand wird überprüft, um zu verifizieren, daß der näher angegebenen Kanal ein Sprach kanal ist.
Der Kanalzustand wird geändert, wenn der näher angegebene Kanal zur Zuweisung ausgewählt ist.
Der Modulationstyp des anfor dernden Teilnehmers wird in das Kanalsteuerbyte geschrieben.
Stellt eine Verbindung von dem ausgewählten Kanal zu dem an fordernden Teilnehmer her.
- a) Schreibe Steuerkanal- und Modulationsschaltinforma tionen aus. Diese Information wird von dem Modem 19, 30 und dem Byte-zu-Symbol-Wandler 127 benötigt.
- b) Formatierte jegliche anhängige RPU-RCC-Nachricht im Sendezwischenspeicher 110. Ansonsten bereite die Null-Bestätigungsnachricht vor und sende sie.
- c) Leite die DMA-Übertragung vom Sendezwischenspeicher 110 zum Modem 19, 30 a ein ermögliche sie, wobei auf die RCC-Einleitung, das eindeutige Wort und den RCC-Datenblock zu zeigen ist.
- d) Kehre von der Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
- a) Schreibe Sprachkanal- und Modulationsschaltinforma tionen für nächsten Schlitz aus. Diese Information wird von dem Modem 19, 30 a und dem Byte-zu-Symbol- Wandler 127 benötigt.
- b) Wähle die VCU-Anschlußadresse aus und ermögliche DMA-Übertragung von VCU zum Sendezwischenspeicher 110.
- c) Schreibe VCU-Steuerwort.
- d) Unterbreche VCU, um Übertragung zu beginnen.
- e) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
- a) Lese VCU-Zustandswort.
- b) Schreibe Codewort an Sendezwischenspeicher 110.
- c) Leite DMA-Übertragung vom Sendezwischenspeicher 110 zum Modem 19, 30 a ein und ermögliche sie, wobei auf die Spracheinleitung, das Codewort und den Sprachdaten block zu zeigen ist.
- d) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
- a) Wähle VCU-Anschlußadresse aus und ermögliche DMA- Übertragung von VCU zu Sendezwischenspeicher.
- b) Schreibe VCU-Steuerwort.
- c) Unterbreche VCU, um Übertragung zu beginnen.
- d) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
- a) Lese VCU-Zustandswort.
- b) Löse DMA-Steuerung 120 für die Sendespeicher-zu-Modem- Übertragung aus und gebe sie frei.
- c) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
- a) Aufbau für BPSK-Modulation. Diese Information wird von dem Symbol-zu-Byte-Wandler 126 benötigt. Das Modem 19, 30 a hat diese Information zu diesem Zeit punkt bereits empfangen.
- b) Leite DMA-Übertragung vom Modem 19, 30 a zum Empfangs zwischenspeicher 115 für die RCC-Nachricht ein und gebe sie frei.
- c) Kehre von Unterbrechungen zurück und fahre mit der Hintergrundverarbeitung fort. AGC-Berechnung und Bitsynchronisationsfehlerverarbeitung sollte in diesem Zeitpunkt stattfinden.
- a) Kopiere RCDC im lokalen RAM.
- b) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort. Bereite dich vor, den empfangenen RCC an die RPU weiterzugeben, wenn ein deutiges Wort wahrgenommen wird und die Prüfsumme richtig ist.
- a) Aufbau für Sprachdaten mit richtiger Modulation. Diese Information wird von dem Symbol-zu-Byte-Wandler 126 benötigt. Das Modem hat diese Information zu dieser Zeit bereits empfangen.
- b) Leite DMA-Übertragung von Modem 19, 30 a zum Empfangs zwischenspeicher für den ersten Halbschlitz von Sprach daten ein und gebe ihn frei.
- c) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort. AGC-Berechnung, Bitsynchro nisationsfehler- und Codewortverarbeitung sollte zu dieser Zeit stattfinden.
- a) Wähle VCU-Anschlußadresse aus und gebe DMA-Übertragung von Empfangszwischenspeicher 115 zur VCU frei. Unter breche VCU, um Übertragung zu beginnen.
- b) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
- a) Leite DMA-Steuerung 121 für Modem-zu-Empfangszwischen speicher-Übertragung für zweiten Halbschlitz ein und gebe sie frei.
- b) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
- a) Wähle VCU-Anschlußadresse aus und gebe DMA-Übertragung vom Empfangszwischenspeicher 115 zur VCU frei. Unter breche VCU, um Übertragung zu beginnen.
- b) Kehre von Unterbrechung zurück und fahre mit der Hintergrundverarbeitung fort.
Claims (31)
Vermittlungseinrichtung (15) mit Umwandlungsmittel (15), die an die Fernsprechleitungen (14) jeweils angeschlossen sind und die von den Fernsprechleitungen empfangene Informationssignale in digitale Signalabtastwerte umwandeln,
Signalkompressionsmittel (16), welche die von den Umwandlungsmitteln (15) empfangenen digitalen Signalabtastwerte komprimieren und eine vorgegebene Anzahl von getrennten komprimierten Signalen liefern, wobei die Vermittlungseinrichtung (15) eine Schalteinrichtung (25) hat, welche die Umwandlungsmittel mit den jeweiligen Kompressionsmitteln (16) verbindet,
Kanalsteuerungen (18), die mit dem Kompressionsmitteln (16) verbunden sind und die komprimierten Signale in einen einzelnen Sendekanal-Bitstrom sequentiell vereinigen, wobei jedes komprimierte Signal eine wiederkehrende sequentielle Schlitzposition in dem Sendekanal-Bitstrom einnimmt, der einem bestimmten Kompressionsmittel (16) zugeordnet ist,
eine fernverbundene Zentraleinheit (20) zum Anschluß an die Fernsprechleitungen, wobei die Zentraleinheit (20) auf ein über eine der Fernsprechleitungen empfangenes Verbindungsanforderungssignal dadurch anspricht, daß sie ein Schlitzzuordnungssignal liefert, das anzeigt, welches der Kompressionsmittel (16) mit dem jeweiligen Umwandlungsmittel verbunden werden soll, wobei das Umwandlungsmittel mit der einen Fernsprechleitung (14) verbunden ist, wobei es der einen Fernsprechleitung denjenigen Schlitz im Sendekanal-Bitstrom zuordnet, der zu dem einen Kompressionsmittel (16) gehört, das durch die Vermittlungseinrichtung (15) so verbunden ist, wobei die Zentraleinheit (20) abspeichert, welche Schlitze so zugeordnet sind, und den Speicher beim Empfang eines Verbindungsanforderungssignals befragt und dann ein Schlitzzuordnungssignal liefert, das eine Verbindung zu einem Kompressionsmittel (16) herstellt, das zu einem der Schlitze gehört, der nicht einer anderen Fernsprechleitung zugeordnet ist,
eine Rufvermittlungseinrichtung (24), die mit der fernverbundenen Zentraleinheit (20) verbunden ist und auf das Schlitzzuordnungssignal anspricht, um die Vermittlungseinrichtung (15) zu veranlassen, die durch das Schlitzzuordnungssignal angezeigte Verbindung herzustellen, und
eine Sendeeinrichtung (21) zum Ausgeben eines Sendekanalsignals zur Übertragung über den vorgegebenen RF-Kanal als Antwort auf den Sendekanal-Bitstrom.
eine Empfangseinrichtung (17, 18, 19, 28, 29) zum Empfangen eines Empfangskanalsignals und zum Verarbeiten des Empfangskanalsignals, um einen Empfangskanal-Bitstrom zu liefern, der getrennte komprimierte Signale in verschiedenen jeweiligen wiederkehrenden sequentiellen Schlitzpositionen enthält,
eine vorgegebene Vielzahl von getrennten Signalsynthesemitteln (16, 15), von denen jedes zu einer verschiedenen Schlitzposition in dem Empfangskanal-Bitstrom gehört, um digitale Signalabtastwerte aus getrennten komprimierten Signalen wiederherzustellen, die in den zugehörigen jeweiligen Schlitzpositionen des Empfangskanal-Bitstromes enthalten sind,
wobei die Kanalsteuerungen (18) die getrennten komprimierten Signale aus dem Empfangskanal-Bitstrom ausscheidet und die ausgeschiedenen Signale zu den getrennten Synthesemitteln (15, 16) verteilt, die zu den jeweiligen Zeitschlitzen gehören, von denen die Signale ausgeschieden wurden, und
durch getrennte Wiederumwandlungsmittel (15) zum jeweiligen Anschluß an jede Fernsprechleitung (14) zum Wiederumwandeln der digitalen Signalabtastwerte in Informationssignale zur Übertragung über die jeweiligen Fernsprechleitungen (14), wobei jedes getrennte Wiederumwandlungsmittel (15) zu einem der getrennten Umwandlungsmitteln (15) gehört und mit einer gemeinsamen Fernsprechleitung (14) mit dem zugehörigen getrennten Umwandlungsmittel (15) verbunden ist,
wobei die Vermittlungseinrichtung (15) die jeweiligen getrennten Wiederumwandlungsmittel mit einem angegebenen getrennten Synthesemittel verbindet, und
wobei die fernverbundene Zentraleinheit (20) auf das von einer Fernsprechleitung (14) empfangene, hereinkommende Verbindungsanforderungssignal dadurch anspricht, daß sie ein Schlitzzuordnungssignal zum Angeben, welches der getrennten Synthesemitteln (15, 16) die Vermittlungseinrichtung (15) mit dem getrennten Wiederumwandlungsmittel (15) verbinden soll, das mit der einen Fernsprechleitung (14) verbunden ist, liefert, und dadurch der einen Fernsprechleitung (14) den Schlitz im Empfangskanal-Bitstrom zuordnet, der zu dem einen getrennten Synthesemittel (15, 16) gehört, das durch die Vermittungseinrichtung (15) so verbunden ist, wobei die fernverbundene Zentraleinheit (20) abgespeichert, welche Schlitze im Empfangskanal- Bitstrom so zugeordnet sind und den Speicher beim Empfang einer hereinkommenden Verbindungsanforderung befragt und dann an den Anrufsprozessor (24) ein Schlitzzuordnungssignal abgibt, um eine Verbindung mit einem Synthesemittel zu bewirken, das zu einem der Schlitze gehört, der nicht einer anderen Fernsprechleitung zugeordnet ist.
die ferngesteuerte Zentraleinheit (20) an die Kanalsteuerungen (18) ein Empfangsschlitzsteuerungssignal abgibt, das eine Zugehörigkeit zwischen der angegebenen Teilnehmerstation und dem Schlitz im Empfangskanal-Bitstrom angibt, der Signalen zugeordnet ist, die von der Teilnehmerstation empfangen werden, die durch das empfangene Teilnehmererkennungssignal angegeben wird, und
daß die Kanalsteuerungen (18) auf das Empfangsschlitzsteuersignal dadurch anspricht, daß sie in einem Schlitz des Sendekanal-Bitstroms eine Fernsteuerungsnachricht abgibt, die an die Teilnehmerstation gerichtet ist, die durch das Empfangsschlitzsteuerungssignal angegeben wird, und angibt, wann die angesprochene Teilnehmerstation Signale an die Einrichtung zum Empfangen eines Empfangskanalsignals aussenden soll, so daß von der Übertragung von der angesprochenen Teilnehmerstation abgeleitete komprimierte Signale den zugeordneten Schlitz im Empfangskanal-Bitstrom besetzen.
eine vorgegebene Vielzahl von getrennten Signalkompressionsmitteln (16) zum gleichzeitigen Komprimieren der digitalen Signalabtastwerte, die jeweils von getrennten Umwandlungsmitteln abgeleitet werden, um die vorgegebene Anzahl von getrennten komprimierten Signalen zu liefern,
eine Kanalsteuerungseinrichtung (18), die mit den Kompressionsmitteln (16) zum sequentiellen Vereinigen der komprimierten Signale in einen einzelnen Sendekanal-Bitstrom verbunden ist, wobei jedes der komprimierten Signale eine wiederkehrende sequentielle Schlitzposition im Sendekanal- Bitstrom einnimmt, die zu einem vorbestimmten getrennten Kompressionsmittel (16) gehört,
eine Sendeeinrichtung (19, 21) zum Ausgeben eines Sendekanalsignals zur Übertragung über den vorgegebenen RF-Kanal als Antwort auf den Sendekanal-Bitstrom,
eine Vermittlungseinrichtung (15) zum Verbinden des jeweiligen getrennten Umwandlungsmittels (15) mit angegebenen getrennten Kompressionsmitteln (16),
eine fernverbundene Zentraleinheitseinrichtung (20) zum Verbinden der Fernsprechleitungen (14), die auf ein hereinkommendes Verbindungsanforderungssignal, das über eine der Fernsprechleitungen (14) empfangen wird, dadurch anspricht, daß sie ein Schlitzzuordnungssignal ausgibt, das angibt, welche Sendekanalschaltung und welches der getrennten Kompressionsmittel (16) in der angegebenen Sendekanalschaltung (18, 19, 21) die Vermittlungseinrichtung mit dem getrennten Umwandlungsmittel verbinden soll, das mit der einen Fernsprechleitung (14) verbunden ist, und dadurch der einen Fernsprechleitung (14) die angegebene Sendekanalschaltung und den Schlitz im Sendekanal-Bitstrom zuordnet, der zu dem einen getrennten Kompressionsmittel (16) gehört, das durch die Vermittlungseinrichtung (15) so verbunden ist, wobei die fernverbundene Zentraleinheit (20) abspeichert, welche Schlitze für jede der Vielzahl von Sendekanalschaltungen so zugeordnet sind und den Speicher beim Empfang einer hereinkommenden Verbindungsanforderung befragt und dann ein Schlitzzuordnungssignal ausgibt, das eine Verbindung mit einer vorgegebenen Sendekanalschaltung bewirkt, in welcher nicht alle der Zeitschlitze einer anderen Fernsprechleitung (14) und einem Kompressionsmittel darin zugeordnet sind, das zu einem der Schlitze gehört, der nicht einer anderen Fernsprechleitung zugeordnet ist, und
eine Anrufsprozessoreinrichtung (24), die mit der fernverbundenen Zentraleinheit (20) verbunden ist und auf ein Schlitzzuordnungssignal anspricht, um die Vermittlungseinrichtung zu veranlassen, die durch das Schlitzzuordnungssignal angegebene Verbindung zu schließen.
wobei die fernverbundene Zentraleinheitsrichtung auf das Teilnehmer-Erkennungssignal dadurch anspricht, daß sie an die Kanalsteuerungseinrichtung (18) in der vorgegebenen Sendekanalschaltung (17, 18, 19, 21), die als Antwort auf die begleitende Verbindungsanforderung zugeordnet wurde, ein Sendeschlitzsteuersignal, das eine Zugehörigkeit zwischen der angegebenen Teilnehmerstation und dem Schlitz im Sendekanal- Bitstrom, der als Antwort auf die begleitende Verbindungsanforderung zugeordnet wurde, angibt, und ein Sendekanalsteuersignal ausgibt, das eine Zugehörigkeit zwischen der angegebenen Teilnehmerstation und dem RF-Kanal angibt, der der vorgegebenen Sendekanalschaltung zugeordnet ist, die als Antwort auf die begleitende Verbindungsanforderung zugeordnet wurde, und
wobei die Kanalsteuerungseinrichtung (18) mit der fernverbundenen Zentraleinheit (20) verbunden ist und auf ein Sendeschlitzsteuersignal dadurch anspricht, daß sie in einem getrennten Schlitz des Sendekanal-Bitstromes eine Fernsteuerungsnachricht ausgibt, die an die Teilnehmerstation gerichtet ist, die durch das Sendeschlitzsteuersignal angegeben wird, und den Schlitz angibt, der das komprimierte Sprachdatensignal enthält, das von dem Sprachsignal abgeleitet wurde, das über die Fernsprechleitung (14) empfangen wurde, von der die Verbindungsanforderung und das begleitende Teilnehmer-Erkennungssignal empfangen wurden, und ferner den RF-Kanal angibt, der der vorgegebenen Sendekanalschaltung (17, 18, 19, 21) zugeordnet ist, die als Antwort auf die Verbindungsanforderung zugeordnet wurde.
eine Vielzahl von Empfangskanalschaltungen (21, 22, 23, 34), von denen jede mit einem der Sendekanalschaltungen (17, 18, 19, 21) gepaart ist, von denen jede einem verschiedenen vorgegebenen RF-Kanal zugeordnet ist und von denen jede die folgenden Merkmale aufweist:
eine Empfangseinrichtung (18, 19) zum Empfangen eines Empfangskanalsignals und zum Verarbeiten des Empfangskanalsignals, um einen Empfangskanal-Bitstrom zu liefern, der separate komprimierte Signale in verschiedenen jeweiligen wiederkehrenden sequentiellen Schlitzpositionen enthält,
eine vorgegebene Vielzahl von getrennten Signalsynthesemitteln (16, 15), von denen jedes zu einer verschiedenen Schlitzposition im Empfangskanal-Bitstrom gehört, um die digitalen Signalabtastwerte aus den getrennten komprimierten Signalen, die in den zugehörigen jeweiligen Schlitzpositionen des Empfangskanal-Bitstromes enthalten sind, wiederherzustellen,
die Kanalsteuerungseinrichtung (18) zum Ausscheiden der getrennten komprimierten Signale aus dem Empfangskanal-Bitstrom und zum Verteilen der ausgeschiedenen Signale an getrennte Synthesemittel, die zu den jeweiligen Zeitschlitzen gehören, aus denen die Signale ausgeschieden werden,
getrennte Wiederumwandlungsmittel (15) zum jeweiligen Anschluß an jede Fernsprechleitung (14) zum Wiederumwandeln der digitalen Signalabtastwerte in Informationssignale zur Übertragung über die jeweiligen Fernsprechleitungen (14), wobei jedes getrennte Wiederumwandlungsmittel (15) zu einem der getrennten Umwandlungsmittel (15) in der gepaarten Sendekanalschaltung (17, 18, 19, 21) gehört und mit einer gemeinsamen Fernsprechleitung (14) mit den zugehörigen Umwandlungsmitteln (15) verbunden ist,
wobei die Vermittlungseinrichtung (15) die jeweiligen getrennten Wiederumwandlungsmittel (15) mit angegebenen getrennten Synthesemitteln (15) verbindet, und
wobei die fernverbundene Zentraleinheitseinrichtung (20) auf das hereinkommende Verbindungsanforderungssignal, das über eine Fernsprechleitung (14) empfangen wird, dadurch anspricht, daß sie ein Schlitzzuordnungssignal ausgibt, um anzugeben, welche Empfangskanalschaltung und welches der getrennten Synthesemittel (15, 16) in der angegebenen Empfangskanalschaltung die Vermittlungseinrichtung (15) mit dem getrennten Wiederumwandlungsmittel (15) verbinden soll, das mit der einen Fernsprechleitung (14) verbunden ist, und dadurch der Fernsprechleitung die angegebene Empfangskanalschaltung (21, 22, 23, 24) und den Schlitz im Empfangskanal-Bitstrom zuordnet, der zu dem einen getrennten Synthesemittel (15, 16) gehört, das durch die Vermittlungseinrichtung so verbunden ist, wobei die fernverbundene Zentraleinheitseinrichtung (20) abspeichert, welche Schlitze im Empfangskanal-Bitstrom jeder Empfangskanalschaltung so zugeordnet sind, und den Speicher beim Empfang einer hereinkommenden Verbindungsanforderung befragt und dann dem Anrufsprozessor (24) ein Schlitzzuordnungssignal zuführt, um eine Verbindung mit einer vorgegebenen Empfangskanalschaltung zu bewirken, in welcher nicht alle der Zeitschlitze einer anderen Fernsprechleitung zugeordnet sind, und die mit einer Sendekanalschaltung (17, 18, 19, 21) gepaart ist, in welcher nicht alle der Zeitschlitze einer anderen Fernsprechleitung (14) und einem Synthesemittel (15, 16) zugeordnet sind, das zu einem der Schlitze gehört, der nicht einer anderen Fernsprechleitung (14) zugeordnet ist.
die Kanalsteuerungseinrichtung (18) auf das Empfangsschlitzsteuersignal dadurch anspricht, daß sie in einem Schlitz des Sendekanal-Bitstromes eine Fernsteuerungsnachricht ausgibt, die an die Teilnehmerstation gerichtet ist, die durch das Empfangsschlitzsteuersignal angegeben wird, und anzeigt, wann die angesprochene Teilnehmerstation Signale an die Einrichtung zum Empfangen eines Empfangskanalsignals (27, 28, 29, 30 a, 30 b, 30 c) aussenden soll, so daß komprimierte Signale, die von der Übertragung von der angesprochenen Teilnehmerstation abgeleitet werden, den zugeordneten Schlitz im Empfangskanal- Bitstrom einnehmen, und ferner den RF-Kanal anzeigt, der der vorgegebenen Empfangskanalschaltung zugeordnet ist, die als Antwort auf die Verbindungsanforderung zugeordnet wird.
Priority Applications (2)
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DE3645383A DE3645383B4 (de) | 1985-03-20 | 1986-03-20 | Digitales Telefonsystem |
DE3645360A DE3645360C2 (de) | 1985-03-20 | 1986-03-20 | Digitales Telefonsystem |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US06/713,925 US4675863A (en) | 1985-03-20 | 1985-03-20 | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
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DE3609395A1 DE3609395A1 (de) | 1986-09-25 |
DE3609395C2 true DE3609395C2 (de) | 1990-06-28 |
DE3609395C3 DE3609395C3 (de) | 1999-04-08 |
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DE3609395A Expired - Lifetime DE3609395C3 (de) | 1985-03-20 | 1986-03-20 | Digitales Telefonsystem |
DE3645394A Expired - Lifetime DE3645394B4 (de) | 1985-03-20 | 1986-03-20 | Funkkommunikationssystem |
DE3645383A Expired - Lifetime DE3645383B4 (de) | 1985-03-20 | 1986-03-20 | Digitales Telefonsystem |
DE3645360A Expired - Lifetime DE3645360C2 (de) | 1985-03-20 | 1986-03-20 | Digitales Telefonsystem |
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DE3645394A Expired - Lifetime DE3645394B4 (de) | 1985-03-20 | 1986-03-20 | Funkkommunikationssystem |
DE3645383A Expired - Lifetime DE3645383B4 (de) | 1985-03-20 | 1986-03-20 | Digitales Telefonsystem |
DE3645360A Expired - Lifetime DE3645360C2 (de) | 1985-03-20 | 1986-03-20 | Digitales Telefonsystem |
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US (19) | US4675863A (de) |
JP (6) | JP2816349B2 (de) |
KR (1) | KR900007130B1 (de) |
CN (1) | CN1008962B (de) |
AT (1) | AT404202B (de) |
AU (2) | AU576627B2 (de) |
BE (1) | BE904065A (de) |
BR (1) | BR8505598A (de) |
CA (1) | CA1250673A (de) |
CH (1) | CH675333A5 (de) |
DE (4) | DE3609395C3 (de) |
DK (4) | DK171304B1 (de) |
ES (1) | ES8707831A1 (de) |
FI (2) | FI81940B (de) |
FR (1) | FR2579391B1 (de) |
GB (1) | GB2174571C (de) |
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1986
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1987
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1988
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1989
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1994
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1995
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1996
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1997
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- 1997-09-09 US US08/926,405 patent/US6014374A/en not_active Expired - Fee Related
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4003820A1 (de) * | 1987-11-20 | 1991-08-14 | Int Mobile Machines | Drahtloses digitales telefonsystem |
DE4003820C2 (de) * | 1987-11-20 | 1998-11-26 | Interdigital Tech Corp | Drahtloses digitales Funktelefonsystem |
DE4019890A1 (de) * | 1990-06-22 | 1992-01-02 | Kurt Biller | Verfahren zur anforderung eines fahrzeuges zur befoerderung von personen gegen bezahlung |
DE19928662A1 (de) * | 1999-06-23 | 2000-12-28 | Sel Verteidigungssysteme Gmbh | Verfahren zum quasi-periodischen Übertragen von Signalisierungsdaten |
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