Distributed protection switching architecture for point-to-point microwave radio systems
AssigneeHarris Stratex Networks Operating Corporation
InventorsThanh H. Nguyen, Andrey A. Kochetkov
Life of this patent
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Abstract
A system and method for protecting a received data stream. Active receivers and standby receivers are provided, each adaptable to receive a data stream on a traffic channel. Plural data processing units are operatively in communication with the receivers. At least one of the plural DPUs provides a switching signal to the receivers to switch the state of the active receiver to standby and the state of the standby receiver to active as a function of a quality measurement of the received data stream via the traffic channel.
Claims31
A method for providing distributed protection switching in a communication system, comprising the steps of:
- providing a plurality of communication modules at least one of which being in an active state and at least one other of which being in a standby state, each of the plurality of communication modules having a switching controller and being operative to process a data stream;
- providing a plurality of data processing units (DPUs) operatively connected to the switching controllers in the plurality of the communication modules;
- performing quality measurements of said data stream by said switching controllers;
- providing a signal from the switching controllers to each of the plurality of DPUs as a function of the quality measurements of said data stream;
- making a switching decision, by the plurality of DPUs, based on the signals respectively received from the switching controllers;
- and
- providing a switching signal from at least one of said plurality of DPUs in response to the switching decision being to switch the active state to a standby state and the standby state,
A method for providing distributed protection switching in a communications system, comprising the steps of:
- providing a receiver in an active state and a receiver in a standby state, said receivers being adapted to receive a data stream on a traffic channel and perform a quality measurement of the received data stream;
- providing a plurality of data processing units (DPUs), each of which adapted for individually making a switching decision, said plurality of DPUs operatively in communication with said receivers;
- and
- providing a switching signal from at least one of said plurality of DPUs based on the switching decision to switch the active state to a standby state and the standby state to an active state, wherein the switching decision is made as a function of the quality measurement of said received data stream.
A system for providing distributed protection switching, comprising:
- a plurality of communication modules of which there are a predetermined X numbers of communication modules in an active state and;
- a predetermined Y number of communication modules in a standby state, wherein at least one of said communication modules in the active state and at least one of said communication modules in the standby state include a switching controller operative to perform a quality measurement of a data stream and produce a signal based on the quality measurement, said switching controller being further operative to change the state of its respective communication module from standby to active or vice-versa;
- and
- a predetermined Z number of data processing units (DPU) operative to receive the signals from said switching controllers and, in response thereto, make a switching decision, said DPUs further comprising;
- a switching unit operative to produce a switching signal if the switching decision is to switch state and communicate the switching signal to said switching controllers in order to change the state of their respective communication modules.
A method for providing distributed protection switching in a communications system with a plurality of communication modules comprising the steps of:
- providing an active module and a standby module, each of said modules adaptable to process a data stream and including a switching controller operative to perform quality measurement of said data stream;
- providing a plurality of data processing units (DPUs) that are operatively in communication with said active and standby modules;
- communicating signals to one or more of said plurality of DPUs from said active and standby modules in response to which such DPUs make a switching decision as a function of the quality measurement of said data stream;
- communicating a switching signal from at least one of said DPUs to the switching controllers in the active and standby modules if the switching decision is to switch state;
- and
- switching the state of said active module to standby and the state of said standby module to active in response to the switching signal.
Dependencies are inferred from the claim text.