Downlink channel locking method and device as well as on-line method and device of cable modem

A modem and channel technology, applied in the field of communication, can solve the problems of time-consuming frequency locking, slow CM online, unable to establish communication with the front-end CMTS server, etc., and achieve the effect of shortening the online process and reducing wasted time.
CN102724088AActive Publication Date: 2012-10-10HUAWEI DEVICE CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI DEVICE CO LTD
Publication Date
2012-10-10

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Abstract

The embodiment of the invention provides downlink channel locking method and device as well as on-line method and device of a cable modem, in order to shorten the downlink channel locking time and the on-line time of the cable modem. The method comprises the following steps: determining whether signals corresponding to current frequency to be scanned are effective or not; if the signals to current frequency to be scanned are effective, then determining a downlink channel according to the current frequency to be scanned; and carrying out on-line operation on the cable modem in the determined downlink channel. Compared with the on-line method of the cable modem provided by the prior art, the method provided by the embodiment of the invention has the advantages that time wasted on many useless frequency points and broadcast television signal frequency points is reduced, and scanning of a great amount of useless channels is avoided during frequency locking, so that the whole on-line process of the cable modem is obviously shortened.
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Description

technical field

[0001] The invention relates to the communication field, in particular to a downlink channel locking method and device, and a cable modem online method and device. Background technique

[0002] With the continuous development of coaxial cable network technology, radio and television operators are gradually carrying out more and more extended services in addition to transmitting radio and television programs in the coaxial cable network. Modem, CM) provides users with two-way digital TV services and Internet access services.

[0003] CM is an access device used in coaxial cable network for data transmission, and provides a way for user terminals (such as computers, interactive digital TV set-top boxes, etc.) to access the Internet through coaxial cables. CM can be made into an independent product, and can also be integrated in a digital TV set-top box. Compared with ordinary modems, CM does not need to dial up to get online, does not occupy telephone lines, ...

Claims

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