A Novel Method to Transmit Real-Time VBR Traffic over the DOCSIS HFC Network
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In order to support real-time variable bit rate traffic over the HFC network a service named Enhanced Unsolicited Grant Service, which is based on the piggyback request function, is introduced in this article, and the Unsolicited Grant Service is also defined. This service uses piggyback to request additional bandwidth and uses the Unsolicited Grant Service to guarantee the quality of services based on DOCSIS V1.1. This service can alleviate the effect caused by packet loss and exploit bandwidth efficiently.