GB1525100A - Communication network - Google Patents

Communication network

Info

Publication number
GB1525100A
GB1525100A GB5295875A GB5295875A GB1525100A GB 1525100 A GB1525100 A GB 1525100A GB 5295875 A GB5295875 A GB 5295875A GB 5295875 A GB5295875 A GB 5295875A GB 1525100 A GB1525100 A GB 1525100A
Authority
GB
United Kingdom
Prior art keywords
demand
networks
communication
control units
network
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
Application number
GB5295875A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US05/537,281 external-priority patent/US4009345A/en
Priority claimed from US05/537,502 external-priority patent/US4009347A/en
Priority claimed from US05/537,212 external-priority patent/US4009344A/en
Priority claimed from US05/537,211 external-priority patent/US4009343A/en
Priority claimed from US05/537,501 external-priority patent/US4009346A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1525100A publication Critical patent/GB1525100A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18528—Satellite systems for providing two-way communications service to a network of fixed stations, i.e. fixed satellite service or very small aperture terminal [VSAT] system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI

Abstract

1525100 Demand assignment communication INTERNATIONAL BUSINESS MACHINES CORP 29 Dec 1975 [30 Dec 1974 (5) 26 June 1975] 52958/75 Heading H4M A plurality of networks, with corresponding control units 10 are coupled via network access control unit, concentrator, and mulitplexer 12, Fig. 4, which provides for assembly of a burst, demand assignable signal for communication (e.g. after modulation via a satellite). The communicated assembled signal is transmitted to all networks for demultiplexing, deconcentration and distribution, the burst duration being variable in dependence on network loading. In the presence of blocked demand, such demand is dispersed over all networks. In meeting demand data has priority over telephonic communication, continuing such communication having priority over transitional telephonic communication. The telephone channels utilize time assignment speech interpolation (TASI). Network control units, Fig. 3 (not shown).-The network control units, receiving baseband, or modulated, digital data, or, via PBX equipment (1.1) signals derived from telephones 1.1.1, function to pass the information in digital form via buffers to slot interchange memory (26), the information being communicated to other ports, or, in TASI format, to other networks or to the unit 12. The network control units, and the unit 12, see Fig. 4 (not shown) make use of microprocessors in their control. The various information and control formats used are disclosed in relation to Figs. 5-10 (not shown), as are the means for establishing and terminating signal paths, Figs. 12, 13A, 13B (not shown).
GB5295875A 1974-12-30 1975-12-29 Communication network Expired GB1525100A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US05/537,281 US4009345A (en) 1974-12-30 1974-12-30 External management of satellite linked exchange network
US05/537,502 US4009347A (en) 1974-12-30 1974-12-30 Modular branch exchange and nodal access units for multiple access systems
US05/537,212 US4009344A (en) 1974-12-30 1974-12-30 Inter-related switching, activity compression and demand assignment
US05/537,211 US4009343A (en) 1974-12-30 1974-12-30 Switching and activity compression between telephone lines and digital communication channels
US05/537,501 US4009346A (en) 1974-12-30 1974-12-30 Distributional activity compression
US59954775A 1975-06-26 1975-06-26

Publications (1)

Publication Number Publication Date
GB1525100A true GB1525100A (en) 1978-09-20

Family

ID=27560108

Family Applications (4)

Application Number Title Priority Date Filing Date
GB5296275A Expired GB1526230A (en) 1974-12-30 1975-12-29 Communication network
GB5296075A Expired GB1527370A (en) 1974-12-30 1975-12-29 Communication network
GB5295975A Expired GB1526960A (en) 1974-12-30 1975-12-29 Communication network
GB5295875A Expired GB1525100A (en) 1974-12-30 1975-12-29 Communication network

Family Applications Before (3)

Application Number Title Priority Date Filing Date
GB5296275A Expired GB1526230A (en) 1974-12-30 1975-12-29 Communication network
GB5296075A Expired GB1527370A (en) 1974-12-30 1975-12-29 Communication network
GB5295975A Expired GB1526960A (en) 1974-12-30 1975-12-29 Communication network

Country Status (1)

Country Link
GB (4) GB1526230A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322845A (en) * 1979-09-28 1982-03-30 Ibm Corporation Demand assignment technique for TDMA satellite communication network
US4397018A (en) 1979-10-17 1983-08-02 Ibm Corporation Baton passing method and apparatus for maintaining synchronization in a TDMA satellite communication system

Also Published As

Publication number Publication date
GB1527370A (en) 1978-10-04
GB1526230A (en) 1978-09-27
GB1526960A (en) 1978-10-04

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921229