Method and apparatus for a cable modem upstream RF switching system
AssigneeArris International, Inc.
InventorDavid Unger
Life of this patent
Estimating the term…
Abstract
A method and apparatus providing for a multifrequency receiver with upstream switching of received frequencies. The invention is described in connection with a cable plant having a plurality of modems transmitting at a first frequency. It may be desirable to locate a second frequency having more desirable transmission characteristics and to cause the modems to transmit at the second frequency. It is disclosed to utilize an additional receiver coupled through a switch which may be used to both locate a desirable frequency and to facilitate automatic switching of the cable modems from the first frequency to the second frequency.
Claims7
A method of switching a plurality of cable modems from transmission on a first frequency to transmission on a second frequency comprising the steps of:
- a) receiving transmissions from a first cable modem and a second cable modem on the first frequency through a first receiver tuned to the first frequency;
- b) tuning a second receiver to the second frequency;
- c) instructing the first cable modem to transmit on the second frequency;
- and
- d) instructing the second cable modem to transmit on the second frequency.
A cable modem termination system for switching a plurality of cable modems from transmission on a first frequency to transmission on a second frequency, comprising:
- a) means for receiving transmissions from a first cable modem and a second cable modem on the first frequency through a first receiver tuned to the first frequency;
- b) means for tuning a second receiver to the second frequency;
- c) means for instructing the first cable modem to transmit on the second frequency;
- and
- d) means for instructing the second cable modem to transmit on the second frequency.
Dependencies are inferred from the claim text.