Multiplexing in a PDH telecommunications network

Details Multiplexing in a PDH telecommunications network Multiplexing in a PDH telecommunications network

2006-07-11

2006-07-11

Nguyen, Steven (Department: 2665)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S468000, C370S493000, C370S545000

Reexamination Certificate

active

07075952

ABSTRACT:
The invention relates to a multiplexing method used in a PDH network. Standard PCM signals are received in the network element, at least some of which are multiplexed on a time-division basis into the same outbound transmission frame, the capacity of the payload portion of the frame substantially corresponding to the capacity required by N PCM signals. In order that ATM cells may be transferred more advantageously than heretofore through an existing PDH network, the multiplexing is implemented as configurable in such a way that the total capacity of the payload portion cab be divided between at least two parts of variable capacity in such a way that each part can be allocated a desired portion of the total capacity of the payload portion in accordance with the current transmission requirement. A part of the payload depending on the desired capacity is allocated to at least one traffic source from a group in which a number of PCM signals constitutes a first traffic source and a number of packet data streams constitutes a second traffic source. The invention is specifically intended for transferring ATM traffic through a PDH network.

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International Search Report for PCT/FI99/00451
The International Telegraph and Telephone Consulting Committee, General Aspects of Digital Transmission Systems—Terminal Equipments, “Physical/Electrical Characteristics of Hierarchical Digital Interfaces”, Recommendation G.703, Geneva, 1991.
The ATM Forum Technical Committee, “Inverse Multiplexing for ATM (IMA) Specification Version 1.0”, AF-PHY-0086.00, Mountain View, CA., Jul. 1997.

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