Method and apparatus for transmitting multiple signal, method and apparatus for receiving multiple signal, multiple signal transmission method and multiplexer/demultiplexer
AssigneeNEC Corporation
InventorSatoshi Kamiya
Life of this patent
Estimating the term…
Abstract
A client channel receiving processor unit converts each reception client signal of a 10B-character form into a GFP frame form. A mapping unit maps the client signal of the GFP frame form on a channel of virtual concatenation. A SONET/SDH processor unit transmits or receives a SONET/SDH frame, in which a GFP frame is mapped, to/from a network. A demapping unit separates each channel of the SONET/SDH frame received by the SONET/SDH processor unit. A client channel transmitting processor unit detects the client signal of the GFP frame from each separated channel to convert the signal into a 10B-character form.
Claims16
A multiple signal transmission method for multiplexing at least one client signal in a SONET/SDH frame to transmit the signal by using 8B/10B block coding, comprising the steps of:
- converting the client signal of a 10B character into a GFP frame form by a transparent GFP;
- mapping the client signal converted into the GFP frame form on a predetermined channel of virtual concatenation;
- and
- transmitting the SONET/SDH frame, in which the channel is multiplexed.
A multiple signal transmission method for receiving a multiple signal, in which at least one client signal is multiplexed in a SONET/SDH frame, by using 8B/10B block coding, comprising the steps of:
- receiving the SONET/SDH frame;
- separating each channel multiplexed in the SONET/SDH frame;
- detecting the client signal of a GFP frame form from the channel;
- and
- converting the client signal of the GFP frame form into a 10B-character form by a transparent GFP.
A multiple signal transmission method which includes the steps of transmitting a multiple signal, in which at least one client signal is multiplexed in a SONET/SDH frame, by using 8B/10B block coding and receiving the multiple signal,
- wherein the transmitting step includes the steps of
- converting the client signal of a 10B-character form into a GFP frame form by a transparent GFP,
- mapping the client signal converted into the GFP frame form on a predetermined channel of virtual concatenation, and
- transmitting the SONET/SDH frame, in which the channel is multiplexed, and
- the receiving step includes the steps of
- receiving the SONET/SDH frame,
- separating the channel multiplexed on the SONET/SDH frame,
- detecting the client signal of the GFP frame form from the channel, and
- converting the client signal of the GFP frame form into a 10B-character form by a transparent GFP.
A multiplexer/demultiplexer for multiplex-transmitting at least one client signal in a SONET/SDH frame by using 8B/10B block coding, comprising:
- a client channel receiving processor unit for converting each reception client signal of a 10B-character form into a GFP frame form by a transparent GFP;
- a mapping unit for mapping the client signal converted into the GFP frame form on a predetermined channel of virtual concatenation;
- a SONET/SDH processor unit for transmitting the SONET/SDH frame, in which the reception client signal of the GFP frame form is mapped, to a SONET/SDH network, and for receiving a SONET/SDH frame, in which at least one transmission client signal of a GFP frame form is mapped, from the SONET/SDH network;
- a depmapping unit for separating each channel of virtual concatenation multiplexed in the SONET/SDH frame received by the SONET/SDH processor unit;
- and
- a client channel transmitting processor unit for detecting each client signal of a GFP frame form from the channel separated from the demapping unit, and for converting the detected client signal of the GFP frame form into a 10B-character form by a transparent GFP.
A multiple signal transmission apparatus for multiplexing at least one client signal in a SONET/SDH frame to transmit the signal by using 8B/10B block coding, comprising:
- a GFP frame generation unit for converting the client signal of a 10B-character form into a GFP frame form by a transparent GFP;
- a VC mapping unit for mapping the client signal converted into the GFP frame form on a predetermined channel of virtual concatenation;
- and
- a SONET/SDH transmitting unit for transmitting a SONET/SDH frame, in which the channel is multiplexed.
A multiple signal receiving apparatus for receiving a multiple signal, in which at least one client signal is multiplexed in a SONET/SDH frame, by using 8B/10B block coding, comprising:
- a SONET/SDH receiving unit for receiving the SONET/SDH frame;
- a VC demapping unit for separating each channel multiplexed in the SONET/SDH frame;
- a GFP frame termination unit for detecting the client signal of a GFP frame form from the channel;
- and
- a TGFP termination unit for converting the client signal of the GFP frame form into a 10B-character form by a transparent GFP.
Dependencies are inferred from the claim text.