SYSTEMS AND METHODS FOR HANDLING CROSSTALK VECTORING FAILURES IN MULTI-CARD VECTORING GROUPS

WIPO Patent Application WO/2012/119080

A3

A communication system comprises a plurality of line cards having transceivers coupled to a plurality of subscriber lines. Each card has at least one active transceiver within the same vectoring group, and each card also has vector logic capable of cancelling crosstalk induced by an active transceiver that is a member of the vectoring group. In the event of a vectoring fault that prevents a line card from receiving vectoring information from another line card, the vector logic is configured to disable vectoring for the interferers affected by the error in order to prevent vectoring operations from adversely affecting the quality of communicated signals. Theaffected transceiver are also configured to adjust their constellation density profiles, thereby reducing their data rates, to accommodate the increased noise level resulting from the loss of vectoring. By handling the vectoring fault in such manner, communication can continue without requiring a retrain.

JPH08111683	SILENT CELL ABANDONING COMMUNICATION SYSTEM
JP2001197547	DATA MESSAGE MANAGEMENT METHOD AND SYSTEM IN WIRELESS COMMUNICATION NETWORK INCLUDING MULTIPLEX WIRELESS SYSTEM
JP4607486	Scheduler and method of scheduling transmission in the communication network

GOODSON RICHARD (US)
WILSON ARLYNN WAYNE (US)
CHU FRED (US)

PCT/US2012/027499

December 05, 2013

March 02, 2012

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ADTRAN INC (US)
GOODSON RICHARD (US)
WILSON ARLYNN WAYNE (US)
CHU FRED (US)

H04L12/28; H04L69/40

US20080285740A1	2008-11-20
US20100034374A1	2010-02-11
US7317681B1	2008-01-08

See also references of EP 2681859A4

HOLLAND, Jon, E. et al. (P.O. Box 2087Huntsville, AL, US)

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