Variable Modulation Unicast System
AssigneeEntropic Communications, Inc.
InventorItzhak Gurantz
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Abstract
A system is described that consists of a variable modulation unicast system that utilizes multiple modulation schemes in a cable network for unicast applications and is capable of assigning users to different channels of differing modulation schemes in the network based on a feedback signal received in response to a transmitted probe signal. The system may also, in response to the feedback signal from a remote device in the network, assign a channel from a plurality of channels having differing carrier frequencies and modulation schemes to the remote device and may also modify the carrier frequencies of the channels.
Claims7
A variable modulation unicast system (“VMUS”) for selecting a channel from a plurality channels, the VMUS comprising:
- a transmitter capable of transmitting a first signal to a plurality of remote devices, wherein the first signal utilizes a first modulation scheme;
- a receiver capable of receiving a plurality of feedback signals from the plurality of remote devices in response to transmitting the first signal, wherein the feedback signals include identification information for each of the plurality of remote devices and a first metric value representative of the respective transmission characteristics of a channel-path to each of the plurality of remote devices;
- and
- a controller capable of selecting a channel from a plurality of channels in response to the received feedback signal and instructing the transmitter to transmit a second signal to the corresponding remote device, wherein the second signal includes information identifying the channel selected by the controller.
Dependencies are inferred from the claim text.