Signal quality information notification method and relay communication apparatus

A relay communication device in a communication system for transmitting relay data through a communication path including a plurality of sections in which different communication schemes are used, the relay communication device being provided between a first section corresponding to one of the plurality of sections and a second section corresponding to another of the plurality of sections located adjacent to the first section, the relay communication device comprising:

• a processor;
• and
• a storage medium having computer program instructions stored thereon, when executed by the processor, perform to:
• receive the relay data from the first section through a frame of a first communication scheme;
• and
• configure, in a frame of a second communication scheme used to transmit the relay data to a relay destination, signal quality information representing signal quality calculated for a physical link in each of the sections through which the relay data is transmitted before arriving at the relay communication device, and output the frame of the second communication scheme to the second section;
• wherein the frame of the second communication scheme includes one bit of signal quality information for each of the physical links through which the relay data is transmitted before arriving at the relay communication device.

A signal quality information notification method in a communication system for transmitting relay data through a communication path including a plurality of sections in which different communication schemes are used, the signal quality information notification method comprising:

• by a relay communication device provided between a first section corresponding to one of the plurality of sections and a second section corresponding to another of the plurality of sections located adjacent to the first section,
• receiving the relay data from the first section through a frame of a first communication scheme;
• and
• performing relaying including configuring, in a frame of a second communication scheme used to transmit the relay data to a relay destination, signal quality information representing signal quality calculated for a physical link in each of the sections through which the relay data is transmitted before arriving at the relay communication device, and outputting the frame of the second communication scheme to the second section,
• wherein the signal quality information includes local signal quality information and remote signal quality information, each of the local signal quality information and the remote signal quality information includes p bits, where p corresponds to a number of physical links.