# US 2014/0153384 A1 · Electronic device and transmission control method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0153384 A1
- Document ID: US20140153384A1
- Status: Published application
- Kind: A1
- Application number: 13/902,841
- Filed: 2013-05-26
- Published: 2014-06-05
- Earliest claimed: 2012-07-13
- Assignees: Fujitsu Limited
- Applicants: Fujitsu Limited
- Inventors: Katsuya Ishiyama
- Web page: https://patentgrep.com/patent/US20140153384A1

## CPC

- H04L 45/28: using route fault recovery
- H04L 47/34: ensuring sequence integrity, e.g. using sequence numbers
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A first component receives packets from a second component. When setting content related to a physical layer of a transmission path between the first component and the second component is reinitialized, the first component transmits identification information to the second component. This identification information identifies a packet to be received when packet transmission suspended due to the reinitialization is restarted. The second component transmits a packet to the first component and receives the identification information from the first component. After the reinitialization has been completed and before the packet transmission is restarted, the second component performs control such that the packet transmission is restarted in accordance with the identification information.

## Claims

### Claim 1

An electronic device comprising:
a first component; and
a second component, wherein
the first component includes
a receiving unit that receives a packet from the second component,
an information transmitting unit that transmits, to the second component, when setting content related to a physical layer of a transmission path between the first component and the second component is reinitialized, identification information which identifies a packet that is to be received when a packet transmission suspended due to the reinitialization is restarted, and
the second component includes
a transmitting unit that transmits a packet to the first component,
a receiving unit that receives the identification information from the first component, and
a transmission control unit that controls, after the reinitialization has been completed and before the packet transmission is restarted by the transmitting unit, the transmitting unit such that the packet transmission is restarted in accordance with the identification information.

### Claim 2 (depends on 1)

The electronic device according to claim 1, wherein, during the reinitialization of the setting content related to the physical layer, the information transmitting unit in the first component adds the identification information to a message that is transmitted and received between the first component and the second component and transmits the message to the second component.

### Claim 3 (depends on 2)

The electronic device according to claim 2, wherein
the information transmitting unit in the first component transmits the identification information a predetermined number of times, via each of multiple transmission paths by which the first component and the second component are connected, and
the transmission control unit in the second component selects one transmission path from among the transmission paths from which the same identification information is received and controls the transmitting unit in accordance with the identification information received via the selected transmission path.

### Claim 4 (depends on 1)

The electronic device according to claim 1, wherein the information transmitting unit in the first component transmits the identification information to the second component after the reinitialization of the setting content related to the physical layer has completed.

### Claim 5

An electronic device comprising:
a receiving unit that receives a packet from a component that is connected via a transmission path; and
an information transmitting unit that transmits to the component, when setting content related to a physical layer for the transmission path is reinitialized, identification information which identifies a packet that is to be received when packet transmission suspended due to the reinitialization is restarted.

### Claim 6

An electronic device comprising:
a transmitting unit that transmits a packet to a component connected via a transmission path;
a receiving unit that receives, from the component, identification information which identifies a packet that is to be received when packet transmission suspended due to the reinitialization is restarted; and
a transmission control unit that controls, after the reinitialization has been completed and before the packet transmission is restarted by the transmitting unit, the transmitting unit such that the packet transmission is restarted in accordance with the identification information.

### Claim 7

A transmission control method executed by an electronic device that includes a first component that receives a packet and a second component that transmits the packet, the transmission control method comprising:
executing reinitialization of setting content related to a physical layer of a transmission path between the first component and the second component;
transmitting, to the second component when the reinitialization is executed, identification information for identifying a packet that is to be received when packet transmission suspended due to the reinitialize is restarted; and
notifying, after the reinitialization has been completed and before the first component restarts the packet transmission, the first component of an instruction to restart the packet transmission in accordance with the identification information.