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1. WO2001020858 - DYNAMIC CIRCUIT EMULATION USING ATM SWITCHES

Publication Number WO/2001/020858
Publication Date 22.03.2001
International Application No. PCT/SE2000/001766
International Filing Date 13.09.2000
Chapter 2 Demand Filed 29.03.2001
IPC
H04L 12/54 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
H04L 12/935 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
931Switch fabric architecture
935Switch interfaces, e.g. port details
H04Q 11/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
11Selecting arrangements for multiplex systems
04for time-division multiplexing
H04L 12/70 2013.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
70Packet switching systems
CPC
H04L 12/56
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
H04L 2012/5659
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
5601Transfer mode dependent, e.g. ATM
5638Services, e.g. multimedia, GOS, QOS
5646Cell characteristics, e.g. loss, delay, jitter, sequence integrity
5652Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
5653using the ATM adaptation layer [AAL]
5659usint the AALX
H04L 2012/5671
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
5601Transfer mode dependent, e.g. ATM
5638Services, e.g. multimedia, GOS, QOS
5671Support of voice
H04L 49/3081
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
49Packet switching elements
30Peripheral units, e.g. input or output ports
3081ATM peripheral units, e.g. policing, insertion or extraction
H04Q 11/0478
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
QSELECTING
11Selecting arrangements for multiplex systems
04for time-division multiplexing
0428Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
0478Provisions for broadband connections
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (publ) [SE]/[SE]
Inventors
  • FLORIN, Håkan
  • FRIMAN, Erik
  • PETERSEN, Lars-Göran
Agents
  • HERBJÖRNSEN, Rut
Priority Data
09/397,07216.09.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DYNAMIC CIRCUIT EMULATION USING ATM SWITCHES
(FR) EMULATION DYNAMIQUE DE CIRCUITS PAR COMMUTATEURS A MODE DE TRANSFERT ASYNCHRONE (ATM)
Abstract
(EN)
The switch for a telecommunications exchange in accordance with an embodiment of the invention adapts a time slot in an incoming TDM-frame to an ATM frame in accordance with a predetermined ATM-VCC, and further dynamically changes a number of ATM cells in the ATM frame for the predetermined ATM-VCC in accordance with a changing number of connections carried through an ATM switch fabric (40) of the exchange. The exchange comprises the ATM switch fabric; a sending port (100); and a receiving port (200). An inband synchronisation signal is carried in an ATM frame routed through the ATM switch fabric from the sending port to the receiving port for coordinating a changing frame structure between the sending port and the receiving port in accordance with the changing number of connections. According to one example implementation, the number of ATM cells in the ATM frame for the predetermined ATM-VCC varies between one and sixty four, and one ATM cell in the ATM frame for the predetermined ATM-VCC convey eleven time slots.
(FR)
Selon une réalisation de cette invention, le commutateur d'un central téléphonique adapte une tranche de temps dans une trame de multiplexage temporel entrante par rapport à une trame à mode de transfert asynchrone en fonction d'une connexion de canal virtuel à mode de transfert asynchrone (ATM-VCC) définie, et modifie également de manière dynamique un nombre de cellules ATM de la trame ATM pour la connexion de canal virtuel définie ATM en fonction d'un nombre changeant de connexions exécutées au moyen d'une matrice (40) de connexion ATM du central téléphonique. Le central comprend la matrice de commutation ATM, un port (100) émetteur et un port (200) récepteur. Un signal de synchronisation intrabande est transporté dans une trame ATM acheminée par la matrice de commutation ATM du port émetteur au port récepteur en vue de coordonner une structure de trame changeante entre le port émetteur et le port récepteur en fonction du nombre changeant de connexions. Selon une mise en oeuvre, le nombre de cellules ATM de la trame ATM pour la connexion de canal virtuel définie ATM varie entre un et soixante quatre, et une cellule ATM de la trame ATM pour la connexion de canal virtuel définie ATM véhicule onze tranches de temps.
Also published as
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