Einzeltreffer — DigiBib

A method for waking up, from a low-power mode, a first communications node coupled to a second node via a first communication link, includes determining, while the first node is awake, a first transmission rate for transmitting data over the first link, storing the first rate at the second node, and selectively transmitting, from the second node to the first node, a first wake-up command at a symbol rate corresponding to the first rate. Where a third node is coupled to the second node via a second link, the method may further include determining, at the second node, while the third node is awake, a second transmission rate for transmitting data over the second link, storing the second rate at the second node, and selectively transmitting, from the second node to the third node, a second wake-up command at a symbol rate corresponding to the second rate.

Titel:	METHOD AND APPARATUS FOR RESTORING WUP MODE FOR MULTI-SPEED ETHERNET DEVICE
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2022
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20220191796 Publication Date: June 16, 2022 Appl. No: 17/644139 Application Filed: December 14, 2021 Claim: 1. A method for waking up a communications node from a low-power mode, the communications node being a first node that is coupled to a second node via a first communication link, the method comprising: determining, while the first node is in an awake mode, a first data transmission rate for transmitting data over the first communication link connecting the first node and the second node; storing, at the second node, the first data transmission rate; and selectively transmitting, from the second node to the first node, a first wake-up command at a symbol rate corresponding to the stored first data transmission rate. Claim: 2. The method for waking up a communications node according to claim 1, wherein the first data transmission rate is determined prior to the first node transitioning to the low-power mode. Claim: 3. The method for waking up a communications node according to claim 1, wherein a third node is coupled to the second node via a second communication link, the method further comprising: determining, at the second node, while the third node is in the awake mode, a second data transmission rate for transmitting data over the second communication link connecting the third node and the second node; storing, at the second node, the second data transmission rate; and selectively transmitting, from the second node to the third node, a second wake-up command at a symbol rate corresponding to the stored second data transmission rate. Claim: 4. The method for waking up a communications node according to claim 3, wherein the first data transmission rate is different from the second data transmission rate. Claim: 5. The method for waking up a communications node according to claim 3, further comprising determining the first data transmission rate and the second data transmission rate at a physical layer of the second node. Claim: 6. The method for waking up a communications node according to claim 3, further comprising storing the first data transmission rate and the second data transmission rate at a physical layer of the second node. Claim: 7. The method for waking up a communications node according to claim 3, wherein waking up the first node comprises waking up a 100BASE-T1 PHY device and waking up the third node comprises waking up a 1000BASE-T1 PHY device. Claim: 8. The method for waking up a communications node according to claim 1, wherein the first wake up command is configured to transition the first node from the low-power mode to the awake mode. Claim: 9. The method for waking up a communications node according to claim 1, wherein determining the first data transmission rate for transmitting data over the first communication link comprises determining a transmission rate for a fixed communication link. Claim: 10. The method for waking up a communications node according to claim 1, wherein storing, at the second node, the first data transmission rate comprises storing the first data transmission rate such that the stored first data transmission rate is accessible from layer one without accessing higher network layers. Claim: 11. A network controller comprising: control circuitry configured to: determine, while a first node is in an awake mode, a first data transmission rate for transmitting data over a first communication link connecting a first node and the network interface device, and store, at the network transceiver, the first data transmission rate; and transceiver circuitry configured to: selectively transmit, to the first node, at a symbol rate corresponding to the stored first data transmission rate, a first wake-up command designed to transition the first node from a low-power mode. Claim: 12. The network controller according to claim 11, wherein the control circuitry is configured to determine the first data transmission rate prior to the first node transitioning to the low-power mode. Claim: 13. The network controller according to claim 11, wherein: the control circuitry is further configured to: determine, while the first node is in the awake mode, a second data transmission rate for transmitting data over a second communication link connecting a second node and the network controller, and store, at the network controller, the second data transmission rate; and the transceiver circuitry is further configured to: selectively transmit, to the second node, at a symbol rate corresponding to the stored second data transmission rate, a second wake-up command designed to transition the second node from a low-power mode. Claim: 14. The network controller according to claim 13, wherein the first data transmission rate is different from the second data transmission rate. Claim: 15. The network controller according to claim 13, wherein the control circuitry is configured to determine the first data transmission rate and the second data transmission rate at a physical layer of the network controller. Claim: 16. The network controller according to claim 13, wherein the control circuitry is configured to store the first data transmission rate and the second data transmission rate at a physical layer of the network controller. Claim: 17. The network controller according to claim 13, wherein the control circuitry is configured to determine the first data transmission rate for transmitting data over the first communication link to the first node when the first node comprises a 100BASE-T1 PHY device and to determine the second data transmission rate for transmitting data over the second communication link to the second node when the second node comprises a 1000BASE-T1 PHY device. Claim: 18. The network controller according to claim 11, wherein the control circuitry is configured to selectively instruct the transceiver circuitry to transmit the first wake-up command as a command that is configured to transition the first node from the low-power mode to the awake mode. Claim: 19. The network controller according to claim 11, wherein the control circuitry is configured to determine the first data transmission rate for transmitting data over the first communication link to the first node when the first communication link is a fixed communication link. Claim: 20. The network controller according to claim 11, wherein the control circuitry is further configured to store, at the network controller, the first data transmission rate such that the stored first data transmission rate is accessible from layer one without accessing higher network layers. Current International Class: 04; 04

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METHOD AND APPARATUS FOR RESTORING WUP MODE FOR MULTI-SPEED ETHERNET DEVICE