MULTI-LANE BASED ETHERNET APPARATUS AND LANE OPERATING METHOD FOR DYNAMIC LANE OPERATION

• US 20130077623A1
• Filed: 08/02/2012
• Published: 03/28/2013
• Est. Priority Date: 09/26/2011
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: HAN, Kyeong Eun
• Application Number:
  US13/565,045
• Publication Number:
  US 20130077623A1
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: H04L 47/25 with rate being modified by the source upon detecting a change of network conditions

Abstract

Disclosed is an Ethernet apparatus having a plurality of lanes according to the present invention, including: a transmission lane identifying unit to identify a physical transmission lane according to a data transmission order by activating a transmitter, and by verifying data to be transmitted through the activated transmitter; and a transmission lane adjusting unit to adjust the physical transmission lane using information about the number of operable lanes and to transmit data through the adjusted physical transmission lane when the physical transmission lane is identified by the transmission lane identifying unit.

Claims

1. An Ethernet apparatus having a plurality of lanes, the apparatus comprising:

a transmission lane identifying unit to identify a physical transmission lane according to a data transmission order by activating a transmitter, and by verifying data to be transmitted through the activated transmitter; and

a transmission lane adjusting unit to adjust the physical transmission lane using information about the number of operable lanes, and to transmit data through the adjusted physical transmission lane when the physical transmission lane is identified by the transmission lane identifying unit.

2. The apparatus of claim 1, wherein:

the transmission lane identifying unit activates a single transmitter among a plurality of transmitters, and generates a lane identification request message to be greater than or equal to the number of virtual lanes, and transmits the lane identification request message to a reception end through the activated transmitter, and the lane identification request message includes lane identification information indicating an order in which data is distributed and thereby is transmitted, and

when a lane identification response message including the lane identification information is received from the reception end by activating deactivated transmitters among the plurality of transmitters, the transmission lane identifying unit identifies, from the received lane identification response message, identification information for adjusting each transmitter or physical transmission lane.

3. The apparatus of claim 2, wherein a lane identification message including the lane identification request message and the lane identification response message has a data structure including a field for identifying whether a corresponding message is the lane identification request message or the lane identification response message and a field including lane identification information that indicates an order in which data is distributed and thereby is transmitted.

4. The apparatus of claim 1, wherein:

when information about the number of operable lanes is received from an upper layer, the transmission lane adjusting unit transmits, to a reception end through a currently available physical transmission lane, a lane adjustment request message including lane adjustment information for lane modification, and

when a lane adjustment response message is received from the reception end, the transmission lane adjusting unit changes the number of lanes of the physical transmission lane to be used for data transmission, and transmits lossless data through the physical transmission lane in which the number of lanes is changed.

5. The apparatus of claim 4, wherein a lane adjustment message including the lane adjustment request message and the lane adjustment response message has a data structure including a field for identifying whether a corresponding message is the lane adjustment request message or the lane adjustment response message and a field including information about the number of lanes to be used for data transmission.

6. The apparatus of claim 4, wherein a lane adjustment message including the lane adjustment request message and the lane adjustment response message has a data structure including a field for identifying whether a corresponding message is the lane adjustment request message or the lane adjustment response message, a field including information about the changed number of lanes, and a field including information about increase or decrease in the number of lanes.

7. The apparatus of claim 1, wherein:

the transmission lane identifying unit and the transmission lane adjusting unit perform lane identification and lane adjustment using a lane operation message including a transmission lane identification message, a transmission lane adjustment message, and a transmission lane error message, and

the lane operation message has a data structure including a field indicating a type of the lane operation message, a field indicating whether a corresponding message is a request message or a response message, a field including information about increase or decrease in the number of lanes, and a field including an identification number based on the type of the lane operation message, information about the number of lanes, or information about a state of each lane.

8. An Ethernet apparatus having a plurality of lanes, the apparatus comprising:

a transmission lane identification response unit to generate a response message by extracting or processing lane identification information that is received through a plurality of receivers; and

a reception lane adjusting unit to change the number of lanes of a reception lane by obtaining modified lane information, and to receive lossless data through the reception lane in which the number of lanes is changed.

9. The apparatus of claim 8, wherein the transmission lane identification response unit receives, from a transmission end through the plurality of receivers, a lane identification request message including lane identification information indicating an order in which data is distributed and thereby is transmitted, processes the lane identification information from the received lane identification request message, and transmits, to the transmission end, a lane identification response message including the processed lane identification information.

10. The apparatus of claim 8, wherein the reception lane adjusting unit receives, from a transmission end, a lane adjustment request message including information about the changed number of lanes, changes the number of lanes to be used for data reception, and transmits, to the transmission end, a lane adjustment response message indicating that changing of the number of lanes is completed.

11. An Ethernet apparatus having a plurality of lanes, the apparatus comprising:

a transmission lane identifying unit to identify a corresponding relationship between a data transmission order and a physical transmission lane;

a transmission lane adjusting unit to adjust the physical transmission lane based on information about the number of operable lanes; and

a transmission rate control unit to insert an idle block into a data position corresponding to a deactivated lane according to adjustment of the physical transmission lane using the identified corresponding relationship.

12. The apparatus of claim 11, wherein the transmission lane identifying unit, the transmission lane adjusting unit, and the transmission rate control unit are formed within a reconciliation sublayer (RS).

13. The apparatus of claim 11, further comprising:

a coding unit to generating a data block by coding data including the idle block;

a block distributing unit to distribute the generated data block to a plurality of lanes; and

a lane alignment unit to align the plurality of lanes to which the data block is distributed.

14. The apparatus of claim 13, wherein the coding unit, the block distributing unit, and the lane alignment unit are formed within a physical coding sublayer (PCS).

15. The apparatus of claim 11, further comprising:

a device control unit to switch off a device and a port corresponding to the deactivated lane according to adjustment of the physical transmission lane.

16. An Ethernet apparatus having a plurality of lanes, the apparatus comprising:

a deactivated lane recognizing unit to recognize a deactivated lane in a physical transmission lane;

a lane alignment unit to align a plurality of lanes by inserting an idle block into the deactivated lane; and

a decoding unit to decode a data block and the idle block through the aligned lanes.

17. The apparatus of claim 16, wherein the deactivated lane recognizing unit, the lane alignment unit, and the decoding unit are formed within a PCS.

18. The apparatus of claim 16, further comprising:

a transmission rate control unit to remove the idle block included in data that is received from the decoding unit.

19. The apparatus of claim 18, further comprising:

a reception lane adjusting unit to change the number of reception lanes by obtaining modified lane information.

20. The apparatus of claim 19, wherein the transmission rate control unit and the reception lane adjusting unit are formed within an RS.