Cable modem and connection retaining method
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsCHI-WEN CHENG, CHUN-CHIEH YANG
Life of this patent
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Abstract
A cable modem in communication with a cable modem termination system (CMTS) scans and tries to lock onto a primary channel, tries to receive a media access control domain description (MDD) message includes subsidiary channels from the CMTS if the primary channel is locked, and tries to lock onto the subsidiary channels in the received MDD message. The cable modem further retains the cable modem to work with the DOCSIS 3.0 standard upon the condition that the primary channel and the subsidiary channels are all locked or retains the cable modem to work with the DOCSIS 2.0 standard upon the condition that the MDD message is not received or the subsidiary channels are not successfully locked.
Claims14
A cable modem in communication with a cable modem termination system (CMTS), the cable modem comprising a processor, a storage system, and one or more programs, wherein the one or more programs are stored in the storage system and operable to be executed by the processor, the cable modem comprising:
- a channel locking module operable to scan and try to lock onto a primary channel of the cable modem;
- a data receiving module operable to try to receive a media access control domain description (MDD) message from the CMTS if the primary channel is locked by the channel locking module, wherein the MDD message includes subsidiary channels of the cable modem and the channel locking module is further operable to try to lock onto the subsidiary channels in the received MDD message;
- and
- a connecting module operable to retain the cable modem to work with the DOCSIS 3.0 standard upon the condition that the primary channel and the subsidiary channels are all locked, or to retain the cable modem to work with the DOCSIS 2.0 standard upon the condition that the MDD message is not received or the subsidiary channels are not successfully locked.
A connection retaining method of a cable modem in communication with a cable modem termination system (CMTS), comprising:
- scanning and trying to lock onto a preset primary channel of the cable modem;
- determining if the primary channel is locked;
- determining if a MDD message comprising subsidiary channels of the cable modem is received from the CMTS if the primary channel is locked;
- trying to lock onto the subsidiary channels in the received MDD message if the MDD message is received;
- determining if the subsidiary channels are all locked;
- retaining the cable modem to work with the DOCSIS 3.0 standard if the subsidiary channels are all locked;
- or
- retaining the cable modem to work with the DOCSIS 2.0 standard if the MDD message is not received or any subsidiary channel is not successfully locked.
Dependencies are inferred from the claim text.