Method and apparatus for overload control of multimedia communications in a hybrid switching system
First Claim
1. A method of preventing overload in one or more hybrid switches transporting a multimedia session containing multimedia information from a source to a destination, said multimedia information consisting of a plurality of monomedia components, said method comprising the steps of:
- determining if sufficient capacity is available in said one or more hybrid switches for each of said monomedia components before accepting said multimedia session;
establishing a separate connection between said source and said destination for each of said monomedia components; and
transmitting said monomedia components to said destination independently by means of said established connections.
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Accused Products
Abstract
A system is disclosed for overload control in a hybrid switching system that separately transports each monomedia stream, such as video, voice and data, of a composite multimedia signal. The overload control is based on the time delay for completion of call establishment of each multimedia session. When the average time delay for completion of call establishment of each multimedia session is below a predefined threshold, the system has sufficient capacity and overload corrective measures are not required. When the average time delay for completion of call establishment of each multimedia session, or a connection for any individual monomedia component within the multimedia session, exceeds a predefined threshold, the switching system is approaching an overload condition, and overload control must be implemented to reduce the number of calls accepted in the next time interval. A decision is made at the beginning of each time interval based on the average call completion time delay over some predefined period of time, to accept a determined number of calls during each time interval.
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Citations
18 Claims
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1. A method of preventing overload in one or more hybrid switches transporting a multimedia session containing multimedia information from a source to a destination, said multimedia information consisting of a plurality of monomedia components, said method comprising the steps of:
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determining if sufficient capacity is available in said one or more hybrid switches for each of said monomedia components before accepting said multimedia session;
establishing a separate connection between said source and said destination for each of said monomedia components; and
transmitting said monomedia components to said destination independently by means of said established connections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for preventing overload in one or more hybrid switches transporting a multimedia session containing multimedia information from a source to a destination, said multimedia information consisting of a plurality of monomedia components, comprising:
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a multimedia traffic handler for;
determining if sufficient capacity is available in said one or more hybrid switches for each of said monomedia components before accepting said multimedia session;
establishing a separate connection between said source and said destination for each of said monomedia components; and
at least one communications port for transmitting said monomedia components to said destination independently by means of said established connections. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification