US 8,572,285 B2Granted

Network equipment and method for selecting communication path

AssigneeHon Hai Precision Industry Co., Ltd.

InventorsJia-Xuan Huang, Ming-Chin Ho

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Abstract

A network equipment is in communication with customer premises equipment (CPE) through a primary electrical path and a secondary electrical path, and includes a timer, a processor and a switching device. The timer provides heartbeat packets for the CPE via the primary electrical path and the secondary electrical path to obtain a first response time and a second response time corresponding to the primary and secondary electrical paths. The switching device is switched to the primary electrical path or the secondary path under the control of the processor. When the timer reaches a preset retransmission timeout, the processor controls the switching device to be switched to the secondary electrical path from the primary electrical path. When the second response time exceeds the first response time at least twice in succession, the processor enables the switching device to be selectively switched to the primary electrical path.

Claims16

Dependent claims

A computerized method for selecting an electronic communication path between a network equipment and a customer premise equipment (CPE), the network equipment comprising a timer and processor, the method comprising steps of:

communicating with the CPE through a primary path by the network equipment and starting to time according to a retransmission timeout (RTO) value by the timer of the network equipment, wherein the path is an electrical wired path where the transmission of electronic data flows across;
determining whether the recorded time reaches the RTO value by the processor;
switching the primary path to a secondary path when the timer exceeds the RTO value;
sending a heartbeat packet to the CPE through the primary path and the secondary path to obtain a first response time of the primary path and a second response time of the secondary path;
comparing the first response time and the second response time with the preset RTO value;
comparing the first response time with the second response time when either the first response time or the second response time is less than the preset RTO value;
enabling a comparison count to add by one when the first response time is less than or equal to the second response time;
determining whether the comparison count exceeds one or not;
and
switching the secondary path to the primary path when the second response time exceeds the first response at least twice in succession.

7 more elements

A network equipment in electronic communication with a customer premises equipment (CPE) through a primary electrical path and a secondary electrical path, the network equipment comprising:

a timer for providing heartbeat packets for the CPE through the primary electrical path and the secondary electrical path, and obtaining a first response time and a second response time corresponding to the primary electrical path and the secondary electrical path;
a processor in electronic communication with the timer, the processor comparing the first response time and the second response time with the preset RTO value;
comparing the first response time with the second response time when either the first response time or the second response time is less than the preset RTO value;
enabling a comparison count to add by one when the first response time is less than or equal to the second response time and determining whether the comparison count exceeds one or not;
and
a switching device in electronic communication with the processor, wherein the switching device is selectively switched to the primary electrical path or the secondary electrical path under the control of the processor, when the timer reaches a predetermined retransmission timeout (RTO), the processor controls the switching device to be switched to the secondary electrical path from the primary electrical path, when the second response time exceeds the first response time at least twice in succession, the processor enables the switching device to be selectively switched to the primary electrical path.

3 more elements

Dependencies are inferred from the claim text.