Path control method, a transmitter circuit, and a receiver circuit
OwnerAkihiko Kimotoinventor
Life of this patent
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Abstract
A virtual concatenation transmission offers a correct data transmission even when a failure occurs in some of virtual concatenation paths, which is realized by eliminating data from failing paths at multiplexing and restoring original data, and by eliminating failing paths from paths through which data is transmitted.
Claims15
A path control method of a system that transmits and receives data by-virtual concatenation, wherein data is assigned to a plurality of paths by a transmitting circuit of a first transmission apparatus located at a first edge of the plurality of the paths, the data is transmitted through a synchronous network, the data is received by a receiving circuit of a second transmission apparatus located at a second edge of the paths, and the received data is multiplexed such that the data is restored, comprising the steps of:
- restoring the data using only data received through normally operating paths, when a failure is detected in a path by the receiving circuit, and
- assigning data to only normally operating paths by the transmitting circuit based on a status of the failure that is supplied from the receiving circuit.
A receiving circuit of a system that transmits and receives data by virtual concatenation, wherein data is assigned to a plurality of paths by a transmitting circuit of a first transmission apparatus located at a first edge of the plurality of the paths, the data is transmitted through a synchronous network, the data is received by a receiving circuit of a second transmission apparatus located at a second edge of the paths, and the received data is multiplexed such that the data is restored, comprising:
- a first failure detecting unit that detects a failure of any of the plurality of the paths from which data is received, and
- a data restoration unit that multiplexes only data received from normally operating paths, excepting the detected failed path, and restores the data.
A transmitting circuit of a system that transmits and receives data by virtual concatenation, wherein data is assigned to a plurality of paths by a transmitting circuit of a first transmission apparatus located at a first edge of the plurality of the paths, the data is transmitted through a synchronous network, the data is received by a receiving circuit of a second transmission apparatus located at a second edge of the paths, and the received data is multiplexed such that the data is restored, comprising:
- a second failure detecting unit that detects a status of the failed path detected by the receiving circuit, and
- an allocation control unit that assigns data to only normally operating paths, excepting the failed path, based on the status of the failed path.
Dependencies are inferred from the claim text.