Multiplex communications – Wide area network – Packet switching
Patent
1987-02-17
1988-11-29
Pellinen, A. D.
Multiplex communications
Wide area network
Packet switching
H04Q 1104
Patent
active
047886803
ABSTRACT:
A time slot selecting method applied to a time division switch in a time division switching network having multi-stage tandem connected time division switches. A controller associated with an upstream time division switch selects an outgoing idle time slot for multi-slot information in accordance with a predetermined time slot selecting order in a manner that the number of combinations of time slots selectable by a downstream time division switch becomes large. Thus, the range of selecting time slots by a downstream time division switch becomes broadened while ensuring the sequence integrity of multi-slots in a frame and hence a path blocking rate is reduced.
REFERENCES:
patent: 3740480 (1973-06-01), Krupp et al.
patent: 4078228 (1978-03-01), Miyazaki
patent: 4516240 (1985-05-01), Kume et al.
patent: 4633460 (1986-12-01), Suzuki et al.
patent: 4633461 (1986-12-01), Banton et al.
"A Multi-Slot Call Connection Method for Broadband Digital Switching", by Asano et al., pp. 13-18, Jan. 18, 1985.
"Time Slot Sequence Integrity of Multi-Slot Information in a Digital Network", by Egawa et al., pp. 57-63, May 23, 1980.
Kikuchi Susumu
Otani Katsumi
Yamamoto Takeaki
Evans Geoffrey S.
Hitachi , Ltd.
Nippon Telegraph & Telephone Corp.
Pellinen A. D.
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