Transfer device and transfer method

Patent metadata

Field	Value
Publication number	US-11201825-B2
Application number	US-201916965925-A
Country	US
Kind code	B2
Filing date	Feb 1, 2019
Priority date	Feb 1, 2018
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

A transfer device for coupling a priority signal and a standard signal includes a reception unit configured to receive a plurality of signals transmitted from a device connected to a path different from a forwarding path, a separation unit configured to separate the signals into the priority signal and the standard signal, an identifier reference unit configured to reference an identifier added to the standard signal, an identifier sort unit configured to sort the standard signal by the identifier, a signal coupling unit configured to couple the plurality of standard signals, a multiplexing unit configured to multiplex the priority signal and the standard signal, a priority control unit configured to determine a transfer order of the signals, a transmission unit configured to transmit the signals to a device connected to the forwarding path, an interrupt transfer processing unit configured to perform interrupt processing in a case where the priority signal arrives during transfer of the standard signal, a signal division unit configured to divide the standard signal, an identifier addition unit configured to add the identifier to the standard signal divided, and a transmission suspending unit configured to suspend transfer of the standard signal until transfer of the priority signal is completed.

First claim

The invention claimed is:

1. A transfer device for coupling a priority service signal and a standard service signal, and transferring signals to form a communication network, the transfer device comprising:
a processor; and
a storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by the processor, perform to:
receive a plurality of signals transmitted from a device connected to a path different from a forwarding path in a transfer route of the communication network;
separate the plurality of signals into the priority service signal and the standard service signal;
reference a unique identifier added to the standard service signal;
sort the standard service signal by the unique identifier;
discard the unique identifier added to the standard service signal;
hold a plurality of the standard service signals of which the unique identifiers are discarded and couple the plurality of the standard service signals;
multiplex the priority service signal and the standard service signal;
hold signals for respective services;
determine a transfer order of the signals in accordance with priorities of the signals;
transmit the signals for respective services to a device connected to the forwarding path in the transfer route;
perform interrupt processing in a case where the priority service signal arrives during transfer of the standard service signal;
divide the standard service signal in a case where the interrupt processing is performed;
add the unique identifier to the standard service signal; and
suspend transfer of the standard service signal until transfer of the priority service signal is completed.

2. The transfer device according to claim 1 , wherein the computer program instructions further perform to:
add the unique identifier based on an identifier corresponding to the standard service.

3. The transfer device according to claim 1 , wherein the computer program instructions further perform to:
add the unique identifier based on a randomly generated value.

4. The transfer device according to claim 1 , wherein the computer program instructions further perform to:
adds the unique identifier that is a hash value generated based on an identifier corresponding to the standard service.

5. The transfer device according to claim 1 , wherein the computer program instructions further perform to:
determine whether to couple the signals on the basis of the identifier.

6. A transfer method for coupling a priority service signal and a standard service signal, and transferring signals to form a communication network, the transfer method comprising:
receiving a plurality of signals transmitted from a device connected to a path different from a forwarding path in a transfer route of the communication network;
separating the plurality of signals received by the receiving into the priority service signal and the standard service signal;
referencing a unique identifier added to the standard service signal;
sorting the standard service signal by the unique identifier referenced by the referencing;
discarding the unique identifier added to the standard service signal sorted by the sorting;
buffering a plurality of the standard service signals of which the unique identifiers are discarded by the discarding and coupling the plurality of the standard service signals;
multiplexing the priority service signal separated by the separating and the standard service signal coupled by the coupling;
holding signals for respective services multiplexed by the multiplexing;
determining a transfer order of the signals held by the buffering in accordance with priorities of the signals;
transmitting the signals for respective services to a device connected to the forwarding path in the transfer route;
performing interrupt processing in a case where the priority service signal arrives during transfer of the standard service signal;
dividing the standard service signal in a case where the interrupt processing is performed;
adding the unique identifier to the standard service signal divided by the dividing; and
suspending transfer of the standard service signal until transfer of the priority service signal is completed.

Assignees

• Nippon Telegraph & Telephone

Inventors

• Hisano Daisuke
• Nakayama Yu
• Kubo Takahiro
• Fukada Youichi

Classifications

• H04L47/33

  using forward notification · CPC title

• H04L47/24 Primary

  Traffic characterised by specific attributes, e.g. priority or QoS · CPC title

• H04L47/2408 Primary

  for supporting different services, e.g. a differentiated services [DiffServ] type of service · CPC title

• H04L47/266

  Stopping or restarting the source, e.g. X-on or X-off · CPC title

• H04L47/32

  by discarding or delaying data units, e.g. packets or frames · CPC title