Patent ID: 9113237
Filing Date: 2015-08-18
Classification: H04B,H04Q

Abstract:
1. An Ethernet Passive Optical Network Over Coaxial (EPOC) Coaxial Network Unit (CNU), comprising: an Ethernet Passive Optical Network (EPON) medium access control (MAC) module configured to receive a control message, the control message containing instructions to enter a sleep mode; a radio frequency (RF) module, configured to couple the EPOC CNU to a coaxial cable; an EPOC physical layer (PHY) module, coupled between the EPON MAC module and the RF module; a traffic detection module configured to determine traffic characteristics of user traffic at the EPOC PHY module in response to the control message; and a power manager module configured to determine a power profile based on the determined traffic characteristics and to control one or more modules of the EPOC CNU according to the power profile in order to enter the sleep mode, wherein the traffic characteristics indicate an upstream bandwidth capacity usage is below a predefined threshold, and wherein the power manager module is configured to control the EPOC PHY module to reduce at least one of: frequencies of frequency sub-carriers used for upstream transmission; a modulation order used for upstream transmission; or a symbol rate used for upstream transmission.