DSL system training

摘要

Existing and future standardized VDSL2 and other systems can be integrated into and used with a vectored DSLAM or other vectored or non-vectored DSL system, without a new user disrupting service to other users in the same or a nearby binder, in some cases by using transmit power, CARMASK and/or PSDMASK DSL capabilities to reduce both downstream and upstream training-signal levels so that training of a new DSL line is non-disruptive, despite a lack of knowledge of the pre-existing binder. For vectored systems, the crosstalk from that tone can be observed, learned and then added to the vectoring system so that any subsequent excitation on that tone would be eliminated by vector processing. A second tone then can be added in the same way, etc. In non-vectored DSLs that might be operating in a binder or line set, once these non-vectored lines are observed to be present, a vectored line set controller, such as a DSL optimizer, then can anticipate the potential interference from such non-vectored lines.

主权项

1. A method comprising:
operating a plurality of DSL lines as an already-operating DSL line set within a vectoring system; integrating one or more new DSL lines that are not yet in operation into the already-operating DSL line set by performing the following operations: operating the one or more new DSL lines at a first transmit power or spectrum control setting concurrently with the already-operating DSL line set; transmitting one or more number of tones on the one or more new DSL lines at a second transmit power or spectrum control in response to evaluating concurrent operation of the one or more new DSL lines and the already-operating DSL line set; configuring operation of the one or more new DSL lines in response to transmitting the one or more number of tones on the one or more new DSL lines at the second transmit power or spectrum control which is higher than the first transmit power or spectrum control; and wherein the one or more number of tones are to be included in the vectoring system.