Method, adjusting apparatus and system for improving line stability

1. A method for improving line stability, comprising: determining by a processor an Operating Performance Value (OPV) on a current Digital Subscriber Line (DSL); and judging by the processor whether the OPV is larger than or equal to a preset Target Performance Value (TPV) and if the OPV is larger than or equal to larger-the preset TPV, adjusting by the processor Management Information Base (MIB) parameters by increasing an interleaved delay of a line template of a line to double without changing other configuration parameters in the line template until a bit error ratio on the line meets requirements.

2. The method of claim 1 , further comprising:

obtaining the MIB parameters from an MIB, wherein the MIB parameters comprise Cyclic Redundancy Check (CRC) codes, the configuration parameters in a line template, and error correction capability parameters.

3. The method of claim 1 , wherein the process of determining the OPV on the current DSL line comprises:

calculating the bit error ratio within a given time as the OPV on the current DSL line.

4. The method of claim 3 , wherein with respect to Asymmetrical Digital Subscriber Line 1 (ADSL1), the process of determining the OPV on the current DSL comprises:

obtaining a Code Violation (CV) value measured by a Cyclic Redundancy Check (CRC) code counter within N minutes from the MIB parameters; and

determining the bit error ratio within the given time according to the CV value measured by the CRC code counter and

e

=

CV

×

0.017

N

×

60

 as the OPV on the current DSL line, wherein e stands for the bit error ratio.

5. The method of claim 1 , wherein judging whether the OPV is larger than or equal to the preset TPV comprises:

judging whether the OPV is larger than or equal to a product of the present TPV and an adjustment factor.

6. The method of claim 1 , wherein the process of adjusting the MIB parameters comprises:

adjusting the configuration parameters in the MIB parameters in the line template according to the OPV and the TPV and sending the adjusted configuration parameters to a DSL transceiver; and

adjusting, by the transceiver, error correction capability parameters at a physical layer according to the configuration parameters.

7. A method for improving line stability of an Asymmetrical Digital Subscriber Line 2 or Asymmetrical Digital Subscriber Line 2 plus (ADSL2/2+), comprising: by a processor determining an Operating Performance Value (OPV) on a current Digital Subscriber Line (DSL); and judging by the processor whether the OPV is larger than or equal to a product of a preset Target Performance Value (TPV) and an adjustment factor; and if the OPV is larger than or equal to the product of the preset TPV and the adjustment factor, adjusting by the processor Management Information Base (MIB) parameters by increasing Impulse Noise Protect (INP) of a line template of a line to double without changing other configuration parameters in the line template until rhea bit error ratio on the line meets requirements.

8. The method of claim 7 , wherein determining of the OPV on the current DSL line comprises:

obtaining a Code Violation (CV) value measured by a Cyclic Redundancy Check (CRC) code counter within N minutes from the MIB parameters; and

determining the bit error ratio within a given time according to the CV value measured by the CRC code counter and

e

=

CV

×

(

T

p

×

SEQ

p

×

K

p

-

1

)

×

8

L

p

×

4000

×

N

×

60

 as the OPV on the current DSL line,

wherein e is the bit error ratio;

T p is a ratio of multiplex data frames of a delay path p to its synchronization bytes;

SEQ p is a length of the synchronization bytes of the delay path p;

K p is a number of bytes of one multiplex data frame of the delay path p; and

L p is a number of bits of one data frame of the delay path p.

9. A non-transitory computer-readable medium including program code, which when executed by a processor, causes the processor to: to determine an Operating Performance Value (OPV) on a current Digital Subscriber Line (DSL); compare whether the OPV is larger than or equal to a product of a preset Target Performance Value (TPV) and an adjustment factor; and if the OPV is larger than or equal to the product, increase Impulse Noise Protect (INP) of a line template of a line to double without changing other configuration parameters in the line template until a bit error ratio on the line meets requirements.

10. The non-transitory computer-readable medium of claim 9 , wherein the program code further causes the processor to obtain the MIB parameters from an MIB, wherein the MIB parameters comprise Cyclic Redundancy Check (CRC) codes, the configuration parameters in the line template, and error correction capability parameters.

11. The non-transitory computer-readable medium of claim 9 , wherein the program code further causes the processor to: obtain a Code Violation (CV) value measured by a Cyclic Redundancy Check (CRC) code counter within a given time from the MIB parameters; and calculate the bit error ratio within a given time according to the CV value measured by the CRC code counter as the OPV on the current DSL line.

12. The non-transitory computer-readable medium of claim 9 , wherein the program code further causes the processor to compare whether the OPV is larger than or equal to product of the preset TPV and an adjustment factor, and if the OPV is larger than or equal to the product, send a comparison result to an adjusting unit.

13. The non-transitory computer-readable medium of claim 9 , wherein the program code further causes the processor to set the bit error ratio in a given time as the preset TPV and send the preset TPV to a comparing unit.

14. The non-transitory computer-readable medium of claim 9 , wherein the program code further causes the processor to: adjust the configuration parameters in the MIB parameters of the line template according to the OPV and the TPV; and send the adjusted configuration parameters to a DSL transceiver via a command path.