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US 2006/0080581 A1Published application
Regenerative relay system and regenerative relay apparatus
AssigneeFujitsu Limited
InventorTakeshi Ono
Life of this patent
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Abstract
A regenerative relay method includes the steps of: i) calculating an error rate of a transmission path between the first half apparatus and a main apparatus; ii) calculating an error rate of a transmission path between the main apparatus and the latter apparatus; iii) adding the error rates; iv) selecting the error correction code and data before the error is corrected in the main apparatus so as to be supplied to the latter apparatus if the added error rates are lower than a designated error correction threshold; and v) selecting data after the error is corrected in the main apparatus and the other error correction code generated from the data so as to be supplied to the latter apparatus if the added error rates are higher than the designated error correction threshold.
Claims13
A regenerative relay method wherein data to which an error correction code is added are transmitted from a first half apparatus so that an error correction is made, and another error correction code is generated from the data after the error is corrected so as to be transferred to a latter apparatus, the method comprising the steps of:
- calculating an error rate of a transmission path between the first half apparatus and a main apparatus;
- calculating an error rate of a transmission path between the main apparatus and the latter apparatus;
- adding the error rates;
- selecting the error correction code and data before the error is corrected in the main apparatus so as to be supplied to the latter apparatus if the added error rates are lower than a designated error correction threshold;
- and
- selecting data after the error is corrected in the main apparatus and the other error correction code generated from the data so as to be supplied to the latter apparatus if the added error rates are higher than the designated error correction threshold.
3 more elements
A regenerative relay method wherein data to which an error correction code is added are transmitted from a first half apparatus so that an error correction is made, and another error correction code is generated from the data after the error is corrected so as to be transferred to a latter apparatus, the method comprising the steps of:
- calculating an error correction amount of a transmission path between the first half apparatus and a main apparatus;
- calculating an error correction amount of a transmission path between the main apparatus and the latter apparatus;
- adding the error correction amounts;
- selecting the error correction code and data before the error is corrected in the main apparatus so as to be supplied to the latter apparatus if the added error correction amounts are lower than a designated error correction threshold;
- and
- selecting data after the error is corrected in the main apparatus and the other error correction code generated from the data so as to be supplied to the latter apparatus if the added error correction amounts are higher than the designated error correction threshold.
3 more elements
A regenerative relay apparatus, comprising:
- a decoding part configured to make an error correction of data by using an error correction code;
- an encoding part configured to generate another error correction code from data after the error is corrected;
- an error count part configured to count an error rate before the error is corrected;
- a transfer part configured to transfer the error rate before the error is corrected from a latter apparatus;
- an adding part configured to add the error rate in the regenerative relay apparatus and an error rate reported from the latter apparatus by a notifying part;
- and
- a selection part configured to select the error correction code and data before the error is corrected in the regenerative relay apparatus so as to be supplied to the latter apparatus if the added error rates are lower than a designated error correction threshold, and configured to select data after the error is corrected in the regenerative relay apparatus and the other error correction code generated from the data so as to be supplied to the latter apparatus if the added error rates are higher than the designated error correction threshold.
4 more elements
A regenerative relay apparatus, comprising:
- a decoding part configured to make an error correction of data by using an error correction code;
- an encoding part configured to generate another error correction code from data after the error is corrected;
- an error correction amount count part configured to count an amount of an error corrected by the decoding part;
- a transfer part configured to transfer another error correction amount from a latter apparatus;
- an adding part configured to add the error correction amount in the regenerative relay apparatus and the other error correction amount reported from the latter apparatus by a notifying part;
- and
- a selection part configured to select the error correction code and data before the error is corrected in the regenerative relay apparatus so as to be supplied to the latter apparatus if the added error correction amounts are lower than a designated error correction threshold, and configured to select data after the error is corrected in the regenerative relay apparatus and the other error correction code generated from the data so as to be supplied to the latter apparatus if the added error correction amounts are higher than the designated error correction threshold.
4 more elements
A regenerative relay apparatus, comprising:
- a decoding part configured to make an error correction of data by using an error correction code;
- an error count part configured to count an error rate before the error is corrected;
- a transfer part configured to transfer the error rate before the error is corrected from a first half apparatus;
- an adding part configured to add the error rate in the regenerative relay apparatus and another error rate reported from the first half apparatus by a notifying part;
- and
- a selection order part configured to make the first half apparatus select an error correction code and data before the error is corrected in the regenerative relay apparatus so as to be supplied to the regenerative relay apparatus if the added error rates are lower than a designated error correction threshold, and configured to make the first half apparatus select data after the error is corrected in the regenerative relay apparatus and an error correction code generated from the data so as to be supplied to the regenerative relay apparatus if the added error rates are higher than a designated error correction threshold.
3 more elements
A regenerative relay apparatus, comprising:
- a decoding part configured to make an error correction of data by using an error correction code;
- an error correction amount count part configured to count an amount of an error corrected by the decoding part;
- a transfer part configured to transfer another error correction amount from a first half apparatus;
- an adding part configured to add the error correction amount in the regenerative relay apparatus and the other error correction amount reported from the first half apparatus by a notifying part;
- and
- a selection part configured to make a selection in the first half apparatus of the error correction code and data before the error is corrected in the regenerative relay apparatus so as to be supplied to the regenerative relay apparatus if the added error correction amounts are lower than a designated error correction threshold, and configured to make the first half apparatus select data after the error is corrected in the regenerative relay apparatus and another error correction code generated from the data so as to be supplied to the regenerative relay apparatus if the added error correction amounts are higher than the designated error correction threshold.
3 more elements
A regenerative relay method wherein data to which an error correction code is added are transmitted from a first half apparatus so that an error correction is made, and another error correction code is generated from the data after the error is corrected so as to be transferred to a latter apparatus, the method comprising the steps of:
- calculating an error rate of a transmission path between the first half apparatus and a main apparatus;
- selecting and encoding an error correction code having a low correction rate in the first half apparatus and selecting and decoding an error correction code having a low correction rate in the main apparatus if the error rate is lower than a designated error correction threshold;
- and
- selecting and encoding an error correction code having a high correction rate in the first half apparatus and selecting and decoding an error correction code having a high correction rate in the main apparatus if the error rate is higher than the designated error correction threshold.
1 more element
A regenerative relay method wherein data to which an error correction code is added are transmitted from a first half apparatus so that an error correction is made, and another error correction code is generated from the data after the error is corrected so as to be transferred to a latter apparatus, the method comprising the steps of:
- calculating an error rate of a transmission path between the first half apparatus and a main apparatus;
- selecting and encoding an error correction code having a low correction rate in the first half apparatus and selecting and decoding an error correction code having a low correction rate in the main apparatus if the error correction amount is lower than a designated error correction threshold;
- and
- selecting and coding an error correction code having a high correction rate in the first half apparatus and selecting and decoding an error correction code having a high correction rate in the main apparatus if the error correction amount is higher than the designated error correction threshold.
1 more element
A regenerative relay apparatus, comprising:
- a plurality of decoding parts configured to make error correction of data, each of the decoding parts having a different correction rate;
- an error count part configured to count an error rate before the error is corrected;
- a selection part configured to select one of the plural decoding parts based on a result of comparison between the error rate and a designated error correction threshold;
- and
- a selection order part configured to order a first half apparatus to select one of the plural decoding parts having different correction rates, corresponding to the selection of the one of the decoding part.
2 more elements
A regenerative relay apparatus, comprising:
- a plurality of decoding parts, each of the decoding parts being configured to make error correction of data and having a different correction rate;
- an error correction amount count part configured to count an amount of an error corrected by the decoding part selected from the plural decoding parts by a selection part;
- the selection part configured to select one of the plural decoding parts based on a result of comparison between the error correction amount and a designated error correction threshold;
- and
- a selection order part configured to order a first half apparatus to select one of the plural decoding parts having different correction rates, corresponding to a selection of the one of the decoding parts.
2 more elements
A regenerative relay apparatus, comprising:
- a plurality of decoding parts, each decoding part being configured to make error correction of data and having a different correction rate;
- an error count part configured to count an error rate before the error is corrected;
- and
- a notification part configured to communicate the error rate to a first half apparatus;
- wherein the error rate communicated by the notification part is compared with a designated error correction threshold so that one of a plurality of decoding parts of the first half apparatus is selected.
2 more elements
A regenerative relay apparatus, comprising:
- a plurality of decoding parts, each of the decoding parts being configured to make error correction of data and having a different correction rate;
- an error correction amount count part configured to count an amount of an error corrected by one of the decoding parts selected from the plural decoding parts by a comparison selection part;
- the comparison selection part configured to select the one of the plural decoding parts based on a result of comparison between the error correction amount and a designated error correction threshold;
- and
- a notification part configured to communicate the error correction amount to a first half apparatus;
- wherein the error correction amount communicated from the notification part is compared with the designated error correction threshold so that one of a plurality of decoding parts of a first half apparatus is selected.
3 more elements
A regenerative relay method of a transmission system wherein a plurality of regenerative relay apparatuses are made cascade-connected, each of the regenerative relay apparatuses comprising:
- a decoding part configured to make an error correction of data by using an error correction code;
- an encoding part configured to generate another error correction code from data after the error is corrected;
- an error count part configured to count an error rate before the error is corrected;
- a transfer part configured to transfer the error rate before the error is corrected from a latter apparatus;
- an adding part configured to add the error rate in the regenerative relay apparatus and another error rate communicated from the latter apparatus by a notifying part;
- and
- a selection part configured to select the error correction code and data before the error is corrected in the regenerative relay apparatus so as to be supplied to the latter apparatus if the added error rates are lower than a designated error correction threshold, and configured to select data after the error is corrected in the regenerative relay apparatus and the other error correction code generated from the data so as to be supplied to the latter apparatus if the added error rates are higher than the designated error correction threshold;
- the regenerative relay method comprising the steps of:
- calculating an error rate between the neighboring regenerative relay apparatuses;
- and
- adding an error rate of a section whose error rate is highest and an error rate of a section neighboring the section whose error rate is highest;
- wherein the section whose error rate is highest and the other neighboring section are made single and decoding and encoding in the regenerative relay apparatus are stopped, if the added error rates are equal to or less than the error correction threshold.
9 more elements
Dependencies are inferred from the claim text.