Method in a communication system

摘要

A method and arrangement are disclosed in a Vector Control Entity for enabling a fair bit rate distribution among lines of similar priority in a vectoring group, when applying partial vectoring in a DSL communication system. The method comprises calculating a rate balancing metric, RBM, for each line i within a priority group A, indicative of the ratio between the bit rate of a line i with a current vectoring resource allocation, and the estimated bit rate of line i assuming approximately no crosstalk within the vectoring group. The method further comprises allocating partial-vectoring resources to the line/s within the group A, based on the calculated RBMs, such as to reduce the difference in RBM between the lines. The method further comprises calculating an updated RBM for any line within the group A subjected to changes in vectoring resource allocation. The method may be iterated until certain criteria are fulfilled. The arrangement is adapted to enable the performance of the above described method.

主权项

1. A method in a Vector Control Entity associated with a plurality of digital subscriber lines forming a vectoring group comprising a group A of lines having the same priority, the method comprising:
when partial-vectoring resources are to be allocated among the lines within the vectoring group:
calculating a rate balancing metric, RBM, for each line i within the group A, indicative of a ratio between a bit rate of line i with a current vectoring resource allocation, and an estimated bit rate of line i assuming approximately no crosstalk within the vectoring group,calculating an updated RBM for any line within the group A subjected to changes in vectoring resource allocation, andallocating partial-vectoring resources to the line/s within the group A, based on the calculated RBMs, such as to reduce the difference in RBM between the lines, thus enabling a fair bit rate distribution among lines of similar priority when applying partial vectoring.